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Showing posts with label solid waste. Show all posts
Showing posts with label solid waste. Show all posts

Sunday, September 11, 2011

MSW PROJECTS IN INDIA & BIO GAS PLANT

----- Original Message -----
Sent: Sunday, September 14, 2008 2:42 PM
Subject: ITS A GAS BIO GAS


San Antonio in the United States could become the first city to draw all its energy requirements from methane gas generated from the city's water treatment system through recycling 14,000 tonnes of biosolids in sewage annually. The methane source includes human waste that, if left untreated and unutilised, would only pollute soil and water.

Treating bio-waste, however, could generate an average of 1.5 million cubic feet of gas a day - enough to fill 1,250 tanker trucks daily - according to the system's chief operating officer. A by-product of human and organic waste, methane is the chief component of natural gas that can fuel generators, power plants and furnaces.

Closer home, gobar gas - natural gas obtained from methane released by cattle waste - as a green alternative to diesel and other fossil fuels has been taken up seriously, particularly in rural households. However, a lack of adequate hygiene is a constraint because the gas formation - in the large containers filled with gobar - makes the drum's lid rise, and there is spillage all around the plant. So, in India gobar gas plants are fertile breeding grounds for mosquitoes and other pests. But this is not an insurmountable problem. Gobar gas plants could be expanded and diversified to include energy extraction from all kinds of biomass and the gas so produced could fuel power stations - as San Antonio proposes to do - and with improved sanitation, the experiment could yield good results for several Indian cities.

As a renewable resource, biomass - either from plants, agriculture and forestry residues, animal or human waste - is biodegradable and so is far more eco-friendly than petroleum-derived fuels. And they are relatively easier to source and process, unlike the sophisticated instruments and know-how required to extract oil or refine coal. Ethanol derived from biofuels has a very high octane rating. It might deliver less energy than gasoline, but by blending about 10 per cent ethanol and petrol or diesel together, a feasible balance is achieved with no perceptible effect on fuel economy.

America's space agency NASA is sponsoring a joint project to turn human waste into a power source for spaceships using a process that could also produce other chemicals that can be used on board. Instead of turning up our noses at the idea of recycling human waste and other biosolids in sewage, it would be worthwhile to explore fully and exploit the immense potential hidden in what we routinely regard as being useless.
 
 
 
 
Source of article: http://greenenergysk.com/?p=14
Name of Project "SGRRL Municipal Solid Waste Project" at Mandur Village, Hoskote Taluk, Bangalore (East) District, Karnataka by M/s Srinivasa Gayathri Resource Recovery Ltd (SGRRL).
Location of the Project (Village / District / State) Mandur Village, Hoskote Taluk, Bangalore (East) District, Karnataka
Brief Description of the Project SGRR Ltd. is in the process of establishing and managing and integrated waste to energy facility comprising of a 1000 Tons Per Day (TPD) RDF (Refuse Derived Fuel) Plant and a power plant of 8 MW in its Phase I activity. The RDF plant would be a Municipal Solid Waste (MSW) treatment facility capable of producing a minimum of 300 TPD RDF which will be used for generating electricity.
Estimate of GHG abatement in tCO2 eq. 414601
Host Country Approval Status Approved
Project Owner / Proponent Srinivasa Gayathri Resource Recovery Ltd (SGRRL), No.87, KR Road, #303, Shreshta Bhumi Complex Bangalore-560 004, Karnataka Contact Person: Mr. B.R. Ashirwad Joint Managing Director
Baseline Methodology "Avoided emissions from organic waste through alternative waste treatment processes" – AM0025- Version 9, Sectoral Scope – 1, 13 dated 10th August, 2007.
Project Start date 22.06.2005 (Agreement signed with BBMP)
Project completion date Feb. 2009 (Financial closure document)
========http://indscanblog.com/2009/04/19/municipal-solid-waste-based-composting-at-kolhapur/
Estimate of GHG abatement in tCO2 eq. 96893
Host Country Approval Status Approved
Project Owner / Proponent Zoom Bio-Fertilizers Private Limited (ZBPL), Shivsagar Estate, Dr Annie Besant Road, 6th Floor, Devchand House, C Block, Worli, Mumbai- 400 018, Maharashtra. Contact Person: Mr. Samuel Kurian Sr. Manager Environment
Baseline Methodology Approved Small Scale Baseline Methodology AMS III F: "Avoidance of methane production from decay of biomass through composting", Version
=============
Name of Project "SESL 6 MW Municipal Solid Waste based power Project" at Vijayawada & Guntur, Andhra Pradesh by M/s Shriram Energy Systems Limited.
Location of the project (village / District / State) Vijayawada & Guntur, Andhra Pradesh
Brief Description of the project This first-of-kind project uses TIFAC assisted technology for refinement of MSW to produce fuel grade pellets and fluff. The plant processes the waste to generated RDF fluff, which is combusted, in a 28 TPH capacity boiler with 65 ata and 485 C configuration, as main fuel in the steam generator, the steam passes through steam turbine to generate power. For processing MSW, specially designed shredders, air density separators, conveyors and rotary screens are used. The power is sold to APTRANSCO.
Estimate of GHG abatement in tCO2 eq. 423368
Host Country Approval Status Approved
Project Owner / Proponent M/s Shriram Energy Systems Limited. Ameerpet, G-1, B Block, United Avenue (North End), Hyderabad 500 016 Andhra Pradesh Contact Person: Mr. Gopala Krishna Murthy, Managing Director, Fax: +91 (040) 2372 9551
Baseline methodology Approved AMS- III E: "Avoidance of Methane Production from Biomass decay through controlled combustion" AMS- ID: "Renewable Electricity Generation for the Grid"
=========http://indscanblog.com/2008/11/30/municipal-solid-waste-treatment-cum-energy-generation/
Brief Description of the project The project is based on the Municipal Solid Waste/ Land disposal (MSW). It contributes to environmental improvement and social development in many ways while also extracting the economic value of wastes. The project proposes to provide opportunity to the rag pickers who can collect the same recyclables from the plant thereby providing employment to poor local folks specially women. The project helps in bettering the environment in the city by a hygiene treatment of solid waste, therefore improve health standards. Global benefits associated with the project are the ones associated with the reduction of green house gases (methane & CO2) which cause global warming.
Estimate of GHG abatement in tCO2 eq. 1620000
Host Country Approval Status Approved
Project Owner / Proponent Asia Bioenergy India Limited (ABIL), 824, Pooonamallee, Near KMC Kilpauk, Chennai-600010 Tel: +91 (044) 26427577/26414705-08 Contact person: Mr. P. Subramani, M.D. Email: subbu@asiabioenergy.com
ABIL is the consortium of following three companies:
1. Enkem Engineers Private Limited (Enkem) 824, Pooonamallee, Near KMC
High Road, Chennai-600010 Tel: +91 (044) 6411362, 6428992 Email: enkem99@md3.vsnl.net
2. Entec UGM BH of Austria (Entec) Entee-Environment Technology UMWELTTECNIK GMBH Austria, 6972 FUSSACH, SCHILFWEG 1 (RSB-HAUS) Tel: +43-55783646
3. Jurong Engineering Limited, Singapore (Jurong), 25, Tanjong Kling Road, Jurong Town, Singapore 628050 Tel: +65-2653222 Fax: +65-2684211 Email: info@jel.com.sg
===============http://indscanblog.com/2009/05/15/methane-recovery-and-power-generation-from-sewage-treatment/
Name of Project "Methane recovery and power generation from sewage treatment plant by Surat Municipal Corporation, Gujarat, India" at Bhatar, Karanj and Singanpore of Surat District by M/s Surat Municipal Corporation.
Location of the Project (Village / District / State) Bhatar, Karanj and Singanpore of Surat District, Gujarat.
Brief Description of the Project The proposed project is planning to install a 3MW power plant based on Sewage gas obtained during sewage treatment process. Biogas is generated from the digesters during the anaerobic sludge treatment process in the sewage treatment plant. This biogas contains 60-75%CH4, 25-40%CO2 and H2S well below 0.5%. The H2S contained in biogas is highly corrosive and it is required to remove this hydrogen sulphide to the desired limit. The Biogas collecting blowers are used to collect the gas from the digesters, which blow the biogas to H2S scrubbing system to remove H2S from biogas. Then biogas could be used to generate electricity. The biogas holder is provided to boost the pressure of biogas to desired level for the biogas engine. Biogas engine type is spark ignited internal combustion engine. The electricity generated by biogas engine generator set is used to run various units of sewage treatment plant.
Estimate of GHG abatement in tCO2 eq. 281275
===========http://www.ipsnews.net/news.asp?idnews=36677
Converting Waste to Energy – Not So Green
By Keya Acharya
BANGALORE, Feb 22, 2007 (IPS) – A stream of protests has hit India's Ministry of New and Renewable Energy (MNRE) for sanctioning municipal waste-to-energy (MWTE) projects that are collapsing under an avalanche of incombustible wastes.
=========
Brief Description of the project The purpose of the project essentially is to utilize available biomass in the region effectively for generation of electricity energy. This emphasis on conservation of environment through use of biomass fuel and Green House Gas (GHG) emission reduction, economic growth. The project has also reduced the ever-increasing demand and supply gap of electricity. The project has increase employment, create business opportunity for local stakeholders. Beside these, there are many benefits like:
• Proper utilization of surplus biomass.
• Generation of Eco-Friendly green power.
• Reduction of CO2 emission etc.
Therefore this project has excellent environment benefits in terms of reduction of carbon emission and coal resource conservation.
Estimate of GHG abatement in tCO2 eq. 178433
Host Country Approval Status Approved
Project Owner / Proponent Rithwik Energy Systems Limited (RESL) Lanco House, 141, avenue #8, Road No.2, Banjara Hills, Hyderabad-500 034 Contact person: Mr. Satya Ravula Sreenivas, Direcctor, Tel: +91 (040) 23556029 Fax: +91 (040) 23540438 Email: rssreenivas@lancogroup.com
=============================http://www.indiaprwire.com/pressrelease/environmental-services/2010060552845.htm
a2z Infrastructure commissions Asia's largest Integrated Municipal Solid Waste Management Project in Kanpur ~ To set up India's first solid waste to power project in Kanpur; substantially powered by Refuse Derived Fuel (RDF) ~
The technology adopted by the company to produce RDF is organic and ensures that the fuel is homogeneous in nature. RDF is also considered as a better replacement for coal and has much lesser emissions than coal.
a2z Infrastructure had earlier commenced the processing and disposal of the solid waste in October 2009 and currently processes 1,500 tonnes of municipal solid waste per day from a population of 31,16,263 in the city. This project has contributed to the reduction of Green House Gas (GHG) emissions by avoiding the methane generation from the wastes at the landfills. The entire project complies with all specifications and norms of the Central Public Health and Environmental Engineering Organisation (CPHEEO). The project is the only Integrated Resource Recovery Facility (IRRF) with varied portfolio of derivatives from the garbage.
The company also produces 150 tonnes of compost per day from municipal solid waste under the brand name of Vasundhara. This is the largest quantity of compost being produced by a single MSW player in the country. The quality of compost generated is as per the FCO (Fertilizer Control Order) Amendment, 2009 and is the only government certified compost in the country. The company also plans to scale compost production to 300 tonnes per day by August, 2010
=================
Project Salient Features- (i) A unique project and first of its kind in the Municipal Solid Waste (MSW) sector in India, where in the entire aspects of MSW management i.e from Primary collection to disposal, including storage, secondary transportation, integrated processing and disposal are being planned together. (ii) A SPV in name of in name of Guwahati Waste Management Company Private Limited (GWMCPL) (100% shareholding of which shall be taken over by the successful developer) has been set up for implementing an integrated waste management facility including an integrated waste processing facility at Boragaon in Guwahati. The project would process 350 tonnes of waste per day. The Project Cost is estimated at Rs.(INR) 5200 Lakhs with a construction period of two years. Under "Jawahar Lal Nehru National Urban Renewal Mission (JNNURM)"Scheme of Ministry of Urban Development, GoI the Grant of Rs (INR) 3516.71 Lakhs is approved for Solid Waste Management component. Out of total approved amount, approximately Rs31Crores of the grant is available to selected developer. (iii) The integrated waste processing facility would include conversion of Municipal Solid Waste into Compost, Refuse Derived Fuel (RDF) and generation of power using RDF at the Boragaon landfill site on Public- Private-Partnership (PPP) basis.
The Scope of Selected developer will include following (iii) Segregated collection of MSW through door-to-door waste collection system in Municipal boundaries of Guwahati city. (iv) Street Sweeping and Drain de-silting activities in Municipal boundaries of Guwahati city. (v) Storage of collected segregated waste from door-to-door waste collection, street sweeping and drain desilting in Secondary Collection Points. (vi) Transportation of waste from Secondary Collection Points to Project Site. (vii) Establishment of a project facility for conversion of Municipal Solid Waste into Compost Plant, Refuse Derived Fuel (RDF) and for generation of power using RDF at the Boragaon landfill site on Public Private Partnership (PPP) basis; (viii) To develop the Sanitary Landfill Site during the Term of the project (ix) To transport and dispose the Residual Inert Matter at the Landfill Site
For More Details Contact: Chief Executive officer, Infrastructure Development Corporation of Assam Limited Mezzanine Floor, Hotel Brahamputra Ashok Guwahati (Assam) Ph-0361-2731807 (D), 2732266,2732904, (M) 91-9954714226 Fax-0361-2731840 Email: shyam.mahanta@ilfsindia.com, manoj.panigraghi@ilfsindia.com, manoj.panigraghi@gmail.com
=============
Jaypee's Municipal Solid Waste Processing Plant inaugurated
Jaypee Associate has set up a municipal solid waste processing plant in Chandigarh, India, in association with Municipal Corporation Chandigarh, as a public-private partnership.
The plant shall be operational after about three months when complete process gets stabilised, he informed. Set up at a cost of Rs.30 crores on a 10 acres land, the plant which is one of its kind in northern India, has the installed capacity to process 500 ton per day of municipal solid waste, which will be converted into refuse-derived fuel to be used in a thermal power plant in Ropar and a cement plant of Jaypee Group in Himachal Pradesh. Mr. Pradeep Mehra, Advisor to the Administrator, said that the leaves sheded by trees in the city, which is the greenest city in the country today, shall also be processed in the plant for converting to fuel pellets.
The plant is fully-covered to minimise exposure to atmosphere, and arrangements to spray culture on the garbage to eliminate insects, flies and odour have also been made. All critical equipment have been imported from Dopastadt Germany and the plant has been commissioned successfully in the supervision of German engineers, which has a fully-equipped laboratory, a workshop, and a fully-automatic control room, effluent treatment plant and fire safety equipment.
Notes to Editor
Jaypee Associates Limited is a Rs.4500 crore company that has set up in Chandigarh, the north India's first municipal waste processing plant at a cost of Rs.30 crore, in association with the Municipal Corporation Chandigarh.
All critical equipment i.e. primary shredder, secondary shredder, and ballistic separator have been imported from world renowned M/s Dopastadt Calbe Gmbh, Germany
…………
Jaiprakash Associates Ltd
63, Basant Lok
Vasant Vihar
New Delhi -110 057
India
Tel: 91/1126141540
URL: http://www.jilindia.com
================http://www.pbsj.com/Contact_Us/Pages/default.aspx
Bioreactor Landfills
PBS&J is very familiar with a wide range of leachate treatment technologies, including recirculation, in which leachate is transferred from the bottom of the landfill to the top. We have been closely involved with organizations that are refining the process of leachate recirculation to create landfills that are "bioreactors," using leachate and other sources of liquid to maximize the decomposition process and thereby extending the life of a landfill.
Leachate Evaporation and Cotreatment
Landfills that collect and flare their landfill gas have an opportunity to use this energy to economically manage leachate via evaporation. PBS&J assists landfill owners in evaluating the cost-effectiveness of this disposal alternative and in implementing leachate evaporation systems. PBS&J also offers experience in cotreating leachate with other wastewaters, including domestic wastewater and septage.
Comprehensive Services
PBS&J provides comprehensive leachate management services, including:
* Leachate collection system design
* Leachate quality and quantity characterization
* Leachate permitting services
* Negotiation assistance with receiving utilities
* Treatment/pretreatment facility design
* Leachate evaporation
* Leachate recirculation and bioreactor landfill design
* Storage and truck loading facilities
* Construction administration
* Start-up assistance
* Operations and maintenance services
———–http://www.mswmanagement.com/march-april-2009/gas-leachate-management.aspx
Tony Maxson is a client manager with the Cornerstone Environmental Group, an engineering consulting, and field service company serving the solid waste industry. He also chairs a bioreactor committee for SWANA.
=====http://www.compost.org/pdf/sheet_6.PDF
THE COMPOSTING PROCESS : Leachate Management
===========
http://ramkyenviroengineers.com/MunicipalWaste.html

Tuesday, July 19, 2011

Biogas from Waste Landfill Site to Power Brazilian Refinery - Waste Management World


 
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Subject: Anaerobic Digestion News - 2 new articles

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Biogas from Waste Landfill Site to Power Brazilian Refinery - Waste Management World

From Newport Beach, California based energy company, FirmGreen, Inc. has made the first international shipment of its biogas cleaning equipment to the Novo Gramacho Landfill near Rio de Janeiro, Brazil.


The Novo Gramacho landfill where the project is located has also been depicted in a documentary nominated for a 2011 Academy Awards - Waste Land.
In 2010, FirmGreen negotiated an agreement with Brazil's G?s Verde, S.A., which is the project developer and the plant's owner-operator, to turn Waste Land's 'dirty gas,' a natural by-product of decomposing waste, into clean usable gas using the company's proprietary technology.
The company claims that the resulting biogas is an environmental-friendly, highly useful fuel with the energy equivalent of natural gas.
Petrobras, the largest company in Latin America by market capitalisation and revenue, will use the biogas to generate over 10% of the thermal energy needed to run its Duque de Caxias Refinery.
The company claims that using the U.S. government's EPA LMOP calculator the Novo Gramacho Anaerobic Digestion Plant will reduce greenhouse gas emissions by 1.4 million metric toness, annually..
To fabricate the specialised gas cleaning equipment required for the project, FirmGreen contracted with Dublin, Ohio based Guild Associates. Guild employees are also helping start-up Gs Verde's Biogas Plant. Brazilian contractors are manufacturing some of the project's components and will take a lead role in the plant's installation.
FirmGreen's CEO, Steve Wilburn, commented, "Our world continues to face significant economic challenges, yet this project demonstrates how bi-cultural teamwork can generate hundreds of jobs, in this case throughout six U.S. states-Indiana, Wisconsin, Ohio, California, Michigan, and Texas-as well as Brazil."

The Novo Gramacho Biogas project is slated to begin commercial operations later this year.
 

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£10 million Anaerobic Digestion Loan Fund (ADLF) Announced in UK

Cautious response to £10m AD fund
By Steve Eminton (7 July 2011)

Recycling minister Lord Henley today confirmed details of a £10 million Anaerobic Digestion Loan Fund (ADLF) for new AD plants in a speech to the conference at UK AD & Biogas 2011, being held in Birmingham.
(Picture, courtesy: Biogen Greenfinch)

But, the announcement met with a strong response from the Anaerobic Digestion and Biogas Association which accused ministers of failing to direct councils in the direction of AD.

The Fund will be administered by WRAP - the Waste & Resources Action Programme - and will lend amounts ranging from £50,000 to £1 million to support the development of new AD capacity in England in conjunction with investment from the private sector. It aims to support 300,000 tonnes of annual capacity to divert food waste from landfill by 2015.

Delegates to the conference and exhibition, which is organised by the Anaerobic Digestion and Biogas Association (ADBA), were broadly positive about the funds. But, some had reservations, especially in terms of finance and local authority commitment.

In his opening speech on Wednesday (July 6) to the conference, Lord Redesdale, chairman of ADBA, had highlighted the importance of securing feedstock.

Responding today to Lord Henley's announcement, ADBA chief executive Charlotte Morton said: "This fund is welcome news for the industry, and will support projects which will make a real difference in starting to build up the UK's anaerobic digestion capacity.
Barrier

"However, it represents only a small part of the investment which is needed to take AD to the point where it is really delivering for the UK's strategic objectives – and raising finance remains the biggest barrier for projects.

"Meeting the UK's 2020 commitments on landfill diversion and renewable energy require high investment in new capacity over the next few years. That simply isn't happening while investors are being put off by mixed messages from government, and while they remain unwilling to direct local authorities to take a course they have already said realises the most benefit.

She added: "The Government needs to build on this announcement by grasping the nettle to encourage wider private finance into the market. This doesn't require more money from the taxpayer – simply clear statements that organic waste feedstock should be source segregated and prioritised for AD."
Viability

Two delegates from the financial sector told letsrecycle.com that, despite the grant, there would still be concerns about the viability of AD plants taking in waste from the household stream.

One said: "Projects dealing with farm waste and commercial waste have a more secure feedstock. There are a lot of uncertainties in dealing with waste and even more when comparisons are made to investing in other renewable energy projects, such as wind power."

Another added: "Some people in the AD sector seem to expect banks just to jump in and take a risk which we just can't do."

And, delegates to the conference also heard a warning from a top local government officer  about the uncertainties that currently exist among local authorities.

Read the full story at the Let's Recycle website.
 

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Sunday, September 14, 2008

ITS A BIO GAS PLANT FROM SOLID WASTE

----- Original Message -----
Sent: Sunday, September 14, 2008 2:42 PM
Subject: ITS A GAS BIO GAS


San Antonio in the United States could become the first city to draw all its energy requirements from methane gas generated from the city's water treatment system through recycling 14,000 tonnes of biosolids in sewage annually. The methane source includes human waste that, if left untreated and unutilised, would only pollute soil and water.

Treating bio-waste, however, could generate an average of 1.5 million cubic feet of gas a day - enough to fill 1,250 tanker trucks daily - according to the system's chief operating officer. A by-product of human and organic waste, methane is the chief component of natural gas that can fuel generators, power plants and furnaces.

Closer home, gobar gas - natural gas obtained from methane released by cattle waste - as a green alternative to diesel and other fossil fuels has been taken up seriously, particularly in rural households. However, a lack of adequate hygiene is a constraint because the gas formation - in the large containers filled with gobar - makes the drum's lid rise, and there is spillage all around the plant. So, in India gobar gas plants are fertile breeding grounds for mosquitoes and other pests. But this is not an insurmountable problem. Gobar gas plants could be expanded and diversified to include energy extraction from all kinds of biomass and the gas so produced could fuel power stations - as San Antonio proposes to do - and with improved sanitation, the experiment could yield good results for several Indian cities.

As a renewable resource, biomass - either from plants, agriculture and forestry residues, animal or human waste - is biodegradable and so is far more eco-friendly than petroleum-derived fuels. And they are relatively easier to source and process, unlike the sophisticated instruments and know-how required to extract oil or refine coal. Ethanol derived from biofuels has a very high octane rating. It might deliver less energy than gasoline, but by blending about 10 per cent ethanol and petrol or diesel together, a feasible balance is achieved with no perceptible effect on fuel economy.

America's space agency NASA is sponsoring a joint project to turn human waste into a power source for spaceships using a process that could also produce other chemicals that can be used on board. Instead of turning up our noses at the idea of recycling human waste and other biosolids in sewage, it would be worthwhile to explore fully and exploit the immense potential hidden in what we routinely regard as being useless.

Monday, July 14, 2008

kitchen waste to energy 0.5 Ton capacity plant


Introduction: kitchen waste to energy
Add kitchen bio degradable Solid waste to a 5 HP mixer to process the waste before putting it into predigestor tank. The waste is converted in slurry by mixing with water (1:1) in this mixture.
Use of thermophilic microbes for faster degradation of the waste. The growth of thermophiles in the predigestor tank is assured by mixing the waste with hot water and maintaining the temperature in the range of 55-60oC. The hot water supply is from a solar heater. Even one-hour sunlight is sufficient per day to meet the needs of hot water.
After the predigestor tank the slurry enters the main tank where it undergoes mainly anaerobic degra-dation by a consortium of archae-bacteria belonging to Methanococcus group. These bacteria are naturally present in the alimentary canal of ruminant animals (cattle). They produce mainly methane from the cellulosic materials in the slurry.
The undigested lignocellulosic and hemicellulosic materials then are passed on in the settling tank. After about a month high quality manure can be dug out from the settling tanks. There is no odour to the manure at all. The organic contents are high and this can improve the quality of humus in soil, which in turn is responsible for the fertility.
As the gas is generated in the main tank, the dome is slowly lifted up. It reaches a maximum height of 8 feet . This gas is a mixture of methane (70-75%), carbondioxide (10-15%) and water vapours (5-10%). It is taken through GI pipeline to the lamp posts. Drains for condensed water vapour are provided on line. This gas burns with a blue flame and can be used for cooking as well.
The gas generated in this plant is used for gas lights fitted around the plant. The potential use of this gas would be for a canteen. The manure generated is high quality and can be used in fields.
Success of this biogas plant depends a great deal on proper segregation of the kitchen waste. The materials that can pose problems to the efficient running of plant are coconut shells and coir, egg shells, onion peels, bones and plastic pieces. Steel utensils like dishes, spoons etc. are likely to appear in the waste bags from canteens. While bones, shells and utensils can spoil the mixer physically, onion peels, coir and plastic can have detrimental effects on microbial consortium in the predigester and main digestion tanks which could be disastrous for the plant.

THE PROPOSAL:


Breakup of the 0.5 T Biogas Project Cost
Civil Construction of Biogas Plant
  1. Mixer with stirrer to mix hot water (1:1) to form a slurry,
  2. Aerobic Digester,
  3. Anaerobic digeter
Mechanical Items :
Gas Holding MS Steel Dome
Steel Fabricated Covers on Manure Pits,
Mixer Stirrer ,3 HP, 1 no
Air Compressor
Solar Water Heater
Water Pump and Slurry Pump
Water and Gas Pipelines on Plant area
Electric Fittings & Miscellaneous


Total Project cost Rs.5,50,000/-
Technology and Consultancy Rs. 1,00,000/-


Grand Total Cost of Project Rs.6,50,000/-


POWER GENERATION:
Bio Gas production = 100 cu mtr /day for 0.5 ton of waste
Methane content (65.75%) = 65.75 cu mtr
Calorific value =28.9 MJ/N.cu mtr
Energy content 65.75x28.9x273/(273+30)=1712 MJ/Day
Generator efficiency--- 30%
Electricity generated =0.3x1712x1000000/3600x1000
= 142.66
Electric power generated = 142.66x0.04167=5.944 kw say 6 kw
= 1.25x 6= 7.5 kva.
We can go for a gas engine of capacity 5 KW . If any gas is left , it will be flared or supplied to staff quarters

Bio Gas from Kitchen Waste


THE PROPOSAL:

Breakup of the 0.5 T Biogas Project Cost

Civil Construction of Biogas Plant

Gas Holding MS Steel Dome

Steel Fabricated Covers on Manure Pits,

Mixer
Tank
Air Compressor
Solar Water Heater
Water Pump and Slurry Pump
Water and Gas Pipelines on Plant area
Electric Fittings & Miscellaneous

Stirrer for mixer



Total Project cost Rs.5,50,000/-
Technology and Consultancy Rs. 1,00,000/-

Grand Total Cost of Project Rs.6,50,000/-

Bio Gas from Kitchen waste



Literature Study : Bio Gas from Kitchen waste
The Principle: Biomass in any form is ideal for the Biomethanation concept, which is the central idea of the Biogas plants. Based on thermophilic microorganisms and microbial processes develop the design of the biogas plant. The plant is completely gravity based.
Brief process description: The segregated wet garbage (food waste) is brought to the plant site in bins and containers. It is loaded on a sorting platform and residual plastic, metal; glass and other non-biodegradable items are further segregated. The waste is loaded into a Waste Crusher along with water, which is mounted on the platform. The food waste slurry mixed with hot water is directly charged into the Primary digester.
This digester serves mainly as hydrolysis cum acidification tank for the treatment of suspended solids. For breaking slag compressed air is used for agitation of slurry. Compressed air will also help in increasing aeration since bacteria involved in this tank are aerobic in nature. The tank is designed in such a way that after the system reaches equilibrium in initial 4-5 days, the fresh slurry entering the tank will displace equal amount of digested matter from top into the main digester tank.
Main digester tank serves as a methane fermentation tank and BOD reduction takes place here. The treated overflow from this digester is connected to the manure pits. This manure can be supplied to farmers at the rate of 4-5 Rs. per Kg. Alternatively municipal gardens and local gardens can be assured of regular manure from this biogas plant.
The biogas is collected in a dome (Gas holder) is a drum like structure, fabricated either of mild steel sheets or fibreglass reinforced plastic (FRP). It fits like a cap on the mouth of digester where it is submerged in the water and rests in the ledge, constructed inside the digester for this purpose. The drum collects gas, which is produced from the slurry inside the digester as it gets decomposed and rises upward, being lighter than air. 1" GI piping will be provided up to a distance of 50 m from the Biogas plant. Biogas burners will be provided. The biogas can be used for cooking, heating and power generation purpose.
Cost details, saving and payback period from a biogas plant: The cost details and the savings envisaged from the plant are given in the following table. The life of the plant could be 20-30 years and payback period is 4-5 years.

Capacity (Tons / Day)


Installation Cost (Rs In Lacks)


Monthly Operation and Maintenance Charges (Rs)


Methane Generation M3


Manure production (tons /day)


Area Required M2


Power


Manpower


Fresh Water (KL /day)


Hot water (Ltr / day of 50-60 C0)


Cooking Fuel (Equivalent to LPG Cyl / day)


1


8-10


8,000/-


100-120


0.1


300


5hp(2hr)


2


2


200


2-3


2


10-12


12,000/-


200-240


0.2


500


5hp(3hr)


3


3


400


4-5


4


20-22


22,000/-


400-480


0.3


700


5hp(3hr)


4


5


400


8-10


5


28-30


30,000/-


500-600


0.5


800


10hp (4hr)


5


7


600


12-14 (25Kw)


10


65-70


50,000/-


1000-1200


2.5


1200


15hp (4hr)


10


15


1000


22-25 (50Kw)

* This is an approximate cost for biogas generation plant and may increase by 10%–20%, depending on location, site-specific parameters, cost of materials, labour cost, etc., in different states/cities. Cost of additional infrastructure like office space, toilets, security, Godown, Shades and power generation will be extra, if required.
Rs – rupees; m3 – cubic meters; m2 – square meters; h – hour; kL – kilolitre; LPG – liquefied petroleum gas; kW – kilowatt; cyl – cylinder
Suitable locations for installation of plant Hotel premises, army/big establishment canteens (private/ government), residential schools/colleges, housing colonies, religious places / temple trusts, hospitals, hotels, sewage treatment plants, villages, etc.



OUR RECENT PROJECT ON BIO GAS GENERATION AND UTILIZATION:
BHOLABA DAIRY LIMITED. ALIGARH, U.P.

Bio Gas Generation from Dairy waste :
Ms Bhole Baba Milk food Industries Ltd. is coming up with a new plant at khair road, Aligarh
The Dairy will handle about 10-lac litre of milk every day. Depending on the season, major differences occur in the quantities of milk received from cooperative milk federation and in the use of butter, butter oil and milk powder. The value added products manufactured will be Casein,Milk Protien Concentrate,Lactose-Both Food &Pherma,Demineralised Whey Protien,Whole Milk Powder,Skimmed Milk Powder, & White Butter In Bricks Form, with future planning to produce processed Cheese/Mozerella.

CHARACTERISTICS OF GENERATING EFFLUENT WATER:

The values of incoming wastewater at ETP is as under:



S.No.


Parameter


Unit


Value



pH



6.0 – 10.5



Total Suspended Solids


Mg/l


1500.0 – 2000.0



B.O.D.


Mg/l


1500.0 – 1800.0



C.O.D.


Mg/l


2500.0 – 3500.0



Oil & Grease


Mg/l


150.0 – 250.0



Rated capacity of ETP


KL/Day


1,000.0

Feeding of Effluent to USAB Reactor: Anaerobic digestion takes place here. Methane gas is generated because of anaerobic degradation. The top supernatant from the USAB reactor flows by gravity to the aeration tanks inlet. Three reactors are planned. When one reactor is out of operation, calamity flow is the designed flow. One distribution box will distribute the flow into the three reactors.
  1. Bio-gas collection & utilization or Flaring: The gas produced in the UASB reactors is led to the gas holder through a moisture trap and gas flow meter.The outlet of the gas holder is to be branched off in two directions, one going to the generator room for supply to the engines and the other to the gas flaring equipments. The primary purpose of a gas holder is to adjust the difference in the rate of gas production and consumption.The gas engines demand a constant supply of bio gas at a constant pressure. The bio gas holder is designed for a storage of 4 hours of bio gas production normally at a pressure of 40m bar. As bio gas enters or leaves, the holder rises or falls with the help of guide rails. Valves in the gas lines will be operated manually to maintain the gas dome at 90%(Gas flaring level), 80%(Engine level) and 20% (Low levels, where engine as well as flaring will be stopped and the dome will be allowed to rise.).
GAS PRODUCTION & POWER GENERATION:
The gas flowing upward with the liquid will be prevented from escaping with the treated flow by GLSS and beam deflector, which will divert it to the gas collector domes. The gas produced shall be passed through 100 mm dia FRP pipe for individual domes and collected at a common point for each reactor by a common header of 200 mm dia pipe from where it will conveyed to the gas holder for constant flow to the gasomete generator or flaring in open atmosphere at about 6 meter above ground level.

Quantity of Gas Production:

PARAMETER


INLET OF UASB


OUTLET OF UASB


REMOVAL IN UASB


BOD


1700 ppm


340 ppm


80%


COD


3300 ppm


1320 ppm


60%


TSS


1800 ppm


450 ppm


75%


FLOW IN UASB = 1500 KLD (Taking full future capacity into account)
Influent COD@ 3300 ppm = 4950 Kg
Effluent COD = 1980 Kg
COD removed in a day = 2970 kg
Bio gas produced @ 0.1 cu mtr per kg of COD removed = 297 cu mtr per day.
Capacity of gas holder: The primary purpose of a gas holder is to adjust the difference in the rate of gas production and consumption. As bio gas enters or leaves, the holder rises or falls by guide rails.
Provide a gas holder of 300 cu mtr capacity.
POWER GENERATION:

The bio gas produced in UASB process should be utilized for production of electric power. The amount of electric power generated shall be as under:
Bio Gas production = 297 cu mtr /day
Methane content (65.75%) = 195.28 cu mtr
Calorific value =28.9 MJ/N.cu mtr
Energy content 195.28x28.9x273/(273+30)=5048 MJ/Day
Generator efficiency--- 30%
Electricity generated =0.3x5048x1000000/3600x1000
= 420.66
Electric power generated = 420.66x0.04167=17.5289 kw say17 kw
= 1.25x 17= 21.25 kva.
We can go for a gas engine of capacity 10 KW . If any gas is left , it will be flared or supplied to staff quarters.


NOTE FOR COMPARISION : A 56 mld UASB plant having Inlet COD =400 ppm can safely run a 45 KW gas engine.



Saturday, July 14, 2007

municipal solid waste--waste to energy plant



Considering an average garbage generation per capita per day as 0.450 Kg, we can assume a total garbage generation for a population of 100,000 as 45,000 Kg per day

Proven on wide range of wastes and feedstocks including
  • Livestock and agricultural wastes
  • Biomass
  • Sewage and industrial sludges
  • MSW and catering wastes
  • Food industry wastes
  • Vegetable market waste
  • Restaurant Waste
  • Farm House/Cattle manure waste
  • Slaughter House/Tannery waste
  • Presumed waste
Suitable locations for installation of plant
Hotel premises, army/big establishment canteens (private/ government), residential schools/colleges, housing colonies, religious places / temple trusts, hospitals, hotels, sewage treatment plants, villages, etc.

The Principle:

Add bio degradable Solid waste  into predigestor tank. 
Use of thermophilic microbes for faster degradation of the waste. The growth of thermophiles in the predigestor tank is assured by mixing the waste with hot water and maintaining the temperature in the range of 55-60oC. The hot water supply is from a solar heater. Even one-hour sunlight is sufficient per day to meet the needs of hot water.

After the predigestor tank the slurry enters the main anaerobic tank where it undergoes mainly anaerobic degra-dation by a consortium of archae-bacteria belonging to Methanococcus group.  They produce mainly methane from the cellulosic materials in the slurry.

The undigested lignocellulosic and hemicellulosic materials then are passed on in the settling tank. After about a month high quality manure can be dug out from the settling tanks. Earth worm can be introduced to settling tank to speedup the process.There is no odour to the manure at all. The organic contents are high and this can improve the quality of humus in soil, which in turn is responsible for the fertility.The manure generated is high quality and can be used in fields.This manure can be supplied to farmers at the rate of 4-5 Rs. per Kg. Alternatively municipal gardens and local gardens can be assured of regular manure from this biogas plant.

As the gas is generated in the main tank, the dome is slowly lifted up. This gas is a mixture of methane (70-75%), carbondioxide (10-15%) and water vapours (5-10%). It is taken through GI pipeline to the gas purification unit. Drains for condensed water vapour are provided on line. This gas burns with a blue flame and can be used for cooking as well.
The gas generated in this plant is used for gas lights fitted around the plant. The potential use of this gas would be for a canteen. The purified gas can be fed to bio fuel electric generator to produce electricity. Gas can be bottled and used to run vehicles.




Cost details, saving and payback period from a biogas plant:

The cost details and the savings envisaged from the plant are given in the following table. The life of the plant could be 20-30 years and payback period is 4-5 years.

Capacity (Tons / Day)
Installation Cost (Rs In Lacks)
Monthly Operation and Maintenance Charges (Rs)
Bio gas   Generation 
Organic Manure production (tons /day)
Area Required M2
Power Generated from Bio Gas
Manpower to run plant
1
35
20,000/-
200 cum/day
0.2
450
250 kw/day
4