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Friday, August 25, 2017

How to develope MLSS in aeration tanks of STP


How to develope MLSS in aeration tanks of  STP

1)Add two tanker (10,000 liter) of activated sludge water  having seed culture (microbes) from settling tank of  existing similar plant from similar industry located anywhere nearby to the aeration tanks of your STP, so that microbiology develops in your aeration tanks. Adjust pH of aeration tank. If you can get domestic waste activated sludge from a working STP plant, it will also work.
Now put the aeration tank to operation in continuous mode by feeding continuously with wastewater with sludge re-circulation as per design re-circulation rate but without any sludge wasting till the biomass concentration reaches to design MLSS. During this phase collect and analyze MLSS samples at every 12 hour interval.
Once the design MLSS concentration is achieved start sludge wasting as per design.

2)  The better of many procedures will be as follows.
1. Fill the aeration tank with water which is not having a TDS of more than some 200 mg/l.
2. Dump cowdung at 10 % of the weight of the water in the tank.
3. Start the aerator and allow aeration for 48 hours.
4. Stop the aerator by about 8 AM on day 4 and allow settling in aeration tank itself for three hours.
5. Syphon out the top supernatant for 10 % of volume.
6. Repeat steps 2 to 5 for 5 to 6 cycles.
7. By this time, bacterial mass would establish.
8. Repeat steps 2 to 5 for 3 to 4 cycles with 5 % cowdung and 5 % raw effluent instead of full 10 % of cowdung.
9. Add micro nutrients as in attachment every the cowdung / effluent mix is added.
10. At this stage verify the raw effluent COD and settled supernatant COD.
11. Let us know the COD values at this stage and based on this we can proceed further.
It is usual that it takes about 3 months to establish a culture like this method. What happens in this method is the bacteria are allowed to go through a mutation process and also grow by retaining its "genetic memory" in its DNA. This way, the acclimatised bacteria once grown will never get knocked out.
There are other methods whereby people buy "enzymes" and start using or use "ready made" dried cultures. These will give excellent results to start with but they are from a different "gener" and will collapse very quickly in case of shock loads.
Thanks & Regards
Dr. S.Sundaramoorthy
Technical Advisor (ex-Engineering Director of Chennai Metropolitan Water Supply and Sewerage Board)

3) For a project this size, the best way is to get 2 tankers of activated sludge from a nearby municipal treatment plant. This is also the cheapest and quickest way. Everything else will take considerable amount of time. The second best alternative is to buy bacterial culture and add to the aeration tank.
They will eventually mutate and grow in size but you will need to replenish them with the same culture at regular intervals. Try Sudershan Chemicals of PUNE for bacterial culture.
Regards,
Taral Kumar
Executive Director
Akar Impex Pvt. Ltd.
Noida, Uttar Pradesh

4)
• Cow dung is the starter for development of MLSS in aeration tank. 
• Take fresh cow dung. 
• Remove the grasses or any other foreign material.
• Prepare slurry in the separate tank.
• Add cow dung into aeration tank filled with effluent.
• Quantity of cow dung is around 3kg/m3 (as such basis).
• Keep the aeration on for 24 hr.
• Add urea & DAP to support the growth.
• Slowly take effluent intro aeration tank after 4 to 5 days.
If you need any further information then please free to contact us.
With regards,
Prof. R. V Saraf



Tuesday, August 22, 2017

RO REJECT WATER TREATMENT

 RO REJECT WATER TREATMENT

1. Almost 30-45% water is rejected from an RO system. The increase in TDS percentage in reject water will be somewhere close to 33% higher than the input TDS. The reject water from an RO system is fed directly into a 2nd RO unit to reduce the quantity of reject water. The reject of the second RO is thermally evaporated or treated by root zone technology.
2. REUSE: Most reject water, with a TDS level of 1200 - 1500 PPM can be safely used for car washing, flushing toilets , gardening etc.
3. ROOT ZONE TECHNOLOGY: If there is land available, we can use this water selective plantation suitable for high TDS after pH correction. The reject water from RO is subjected to  root-zone technology applying sacrificial plants typha-reeds or cayhna-indica etc. Only plants can use the in organics. This is how Nature is designed. The remedied water can then be used for other grass/ greens/Irrigation.

4. Thermal Evaporation: Evaporation is a time-tested methodology for reducing the water portion of water-based waste. The evaporator converts the water portion of water-based waste to water vapor, while leaving the higher boiling contaminants behind. Thermal Evaporator heated by natural gas or other available heat sources like boiler steam can evaporate water to atmosphere very effectively. Multiple effect evaporators  are costly and energy guzzling.

5.RO reject water should never be added to ETP water or rain water harvesting system.

Friday, August 18, 2017

How to purify your heart spiritually in islam in three steps





How to purify your  heart  spiritually in islam in three steps

I have compiled the following as a reminder for myself and for those searching for similar advice.

The following article is from http://muslimmatters.org/2013/07/31/practical-tips-for-purification-of-the-heart/

“A day in which neither wealth nor children shall be of any benefit, except one who comes to God with a sound heart” (Sūrat’l-Shu‘arā’: 88-89).
Spiritual purification of the self is the essence of Islamic teachings. Knowledge of this science was traditionally learned by keeping company with good teachers and righteous companions.

NUMBER ONE :    The Obligatory Prayers
This one is so obvious it doesn’t need to be stated. However, the reality is, most of us struggle to keep up with our five prayers on time. Those already doing this should work on offering the voluntary prayers (sunnan rawatib) and supererogatory prayers (dhuda, ishrāq, alāt’l-wuū’ etc).
NUMBER TWO :Have a daily reading of Qur’ān
Whether it is a hizb (i.e. 1/60  of Quran)a few pages or a few lines, pick an amount that you can commit to reading from the Qur’ān everyday. Make it a routine to read that amount after one of the obligatory prayers—after Fajr is usually the best time to do so.
NUMBER THREE: Daily Supplications (tasbeeh) for Morning or Evenings
Having a regular supplication (a designated amount) of tasbeeh (Darud, ashtagfaar etc) is also necessary in one’s daily routine. The Prophet (PBUH) recommended supplications for mornings or evenings. Your spiritual guide will  tell you what to do.. Set aside a time, usually after Fajr or Maghrib, to recite them.
The last piece of advice is to make du‘ā’ and to avoid sins. Practical measures outlined above need to be coupled with constant prayer asking God to grant you a pure heart. In addition, while sins are inevitable, an active effort needs to be made to avoid sins we commit consistently. As mentioned earlier, sins are barriers that limit the opportunity to do good works; avoiding them and constantly seeking forgiveness is therefore vital.
Allah loves those who constantly repent (Qur’ān  Sūrat’l-Baqarah: 222); our Prophet (  PBUH Say Darud), the best of creation, would seek repentance over 70 times a day; 
Sins are barriers which restrict the opportunity to do good works; so begin your journey with sincere repentance. List all of the main sins you aim to eliminate in the future and ask forgiveness for those sins specifically. A specific repentance with the intention of starting on a spiritual quest will act as a starting line for you. It will put you in the right frame of mind and will allow you to be cognizant of committing these sins again.
TWO GUIDES OF MY LIFE GONE , SAME MONTH & SAME YEAR.

I LOST MY FATHER , MY MENTOR, MY INSPIRATION SYED ISHTIAQUE AHMAD SAHEB ON 13.08.2016. AT GUWAHATI, ASSAM
&
I LOST MY SPIRITUAL GUIDE MOHD NASIM AFSAR SAHEB of Mumbai on  28.08.2016.
Please pray for their  maagfiraat.
Death is inevitable. It is the one thing that we can be certain about in life. We are born to die. Every soul shall have a taste of death no matter who they are. This is confirmed for us many times in the Quran:

"Every soul shall have a taste of death: and only on the Day of Judgement shall you be paid your full recompense." (Quran 3:185)

"Every soul shall have a taste of death: and We test you by evil and by good, by way of trial. To Us must you return." (21:35)

"Every soul shall have a taste of death: In the end to Us shall you be brought back." (29:57)


and the Almighty says, “No self knows what it will earn tomorrow and no self knows in what land it will die.” (W31:33; H31:34)
The Almighty says, “When their specified time arrives, they cannot delay it for a single hour nor can they bring it forward,” (16:61)
and the Almighty says, “O you who believe! Do not let your wealth or children divert you from the remembrance of Allah. Whoever does that is lost. Give from what We have provided for you before death comes to one of you and he says, ‘O Lord, if only you would give me a little more time so that I can give sadaqa and be one of the righteous.’ Allah will not give anyone more time, once their time has come. Allah is aware of everything you do.” (63:9-11)
Ibn ‘Umar used to say, “In the evening, do not anticipate the morning, and in the morning do not anticipate the evening. Take from your health for your illness and from your life for your death.” [al-Bukhari]

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “Remember often the destroyer of pleasures,” by which he meant death.

Source: Sunan ibn Majah 4258, Grade: Sahih (authentic) according to Al-Albani