Health Risks People Take

1. Lack of exercise : You must go for morning walk, atleast one KM every day.Regular exercise improves the immune system, gives you positive energy and keep you in good mood throughout.

2.Lack of sleep. Try to get sufficient amount of sleep.Normally a person requires seven hoursv of sleep.

 

3.Lack of water : Neither juice nor tea can replace the benefits guaranteed by water, but be sure to make it a rule to drink at least 8 glasses of water every day. This will make you more energetic, protects the immune system and also prevents dehydration that can result in headaches and muscle pains. So ensure that there is a water bottle at your desk and prevent headaches amidst your work and meetings.

 

4. Lack of proper meal : Never skip a meal. In the long run it will play havoc with your system.

 

5.Dining out frequently: Go for home food. Avoid outside food as much as possible as you dont know how these foods are prepared.

DAF Clarifier in Paper Mill waste water

FLOTATION PROCESS

DAFTECH Floatcells are circular in shape, ranging in diameter from 1.2 to 21.3 meters and a liquid depth of only 0.65 meter. The complete set up consists of a flotation tank, feed pump, pressure pump, compressor, air mixing tube, chemical feed system and a spiral scoop for collection and removal of floated sludge.

The inlet, outlet and sludge removal mechanisms are contained in the central rotating section. This section and the spiral scoop rotate around the tank at a speed synchronized with the flow. The system is operated in the recycle flow pressurization mode where a portion of clarified effluent (25 - 30 percent) is continuously recycled from the collection tank to the air mixing tube at about 6.5 bar pressure. After pressure release, the aerated water is mixed with the influent flow just before the inlet to the distribution duct that moves with the same velocity, but in opposite direction to the incoming flow thus creating a quiescent state in the flotation chamber. Fine bubbles generated in this manner attach to the suspended particles and make them float to the surface.

The spiral scoop takes up the floated sludge, pouring it into the stationary center section where it is discharged by gravity. Clarified water is removed by extraction pipes, which are attached to the moving center section and discharged. Wiper blades attached to the moving distribution duct scrape the bottom and the sides of the tank and discharge settled sludge into the built-in sump for periodic purging. The variable speed gear motor drives the rotating elements and scoop. Electrical current for the gear motor is fed from a rotary contact mounted on the central shaft.

AIR MIXING

The separation efficiency of Total Suspended Solids in a DAF cell depends substantially on the generation of uniformly sized microscopic air bubbles. 

A part of the clarified water, generally 25 to 30% of the feed rate, is pressurized through a centrifugal pump to about 65 meter head and let into a cylindrical Air Mixing Tube through a nozzle at one end. The nozzle is so oriented inside the tank that the jet of water churns spirally along the inside wall of the tube forming a vortex along the central axis of the tube.

Into this tube is brought compressed air which passes through a microscopically porous medium placed adjacent to the inside wall of the tube.

The tube produces a saturated air-water mixture because the rate of absorption of any gas in a liquid is directly proportional to the pressure in which the dissolution takes place.

The air-water mixture that comes out of the other end of the tube passes through a pressure release valve where the pressure is reduced to the level of the incoming wastewater feed. At this stage, air bubbles of 30 - 50 microns are produced profusely which get released into the wastewater thereby giving the necessary buoyancy
to the suspended solids to rise to the surface of the water in the flotation tank.

ZERO VELOCITY

A quiescent state is an absolute necessity for good flotation. This is achieved by ensuring zero velocity of the wastewater when it enters the flotation tank.

The feed of wastewater premixed with depressurized recycle stream is led into the main tank through a distribution tube with adjustable nozzles. It is then discharged into the tank through baffles and then a turbulence arrester. The rotational velocity of the incoming wastewater into the tank is counterbalanced by the mechanical movement of the distribution tube in the opposite direction but at the same speed. This ensures quiescent condition and minimum turbulence.

DAFTECH Floatcells are designed with a retention time of 3 minutes. The equipment therefore is much more compact than rectangular DAF clarifiers of 15 to 30 minutes of retention and occupies only half of the floor space.

 

1	Wastewater Inlet	7	Floatcell Wall	13	Wastewater Pump
2	Clarified Water Outlet	8	Tank Wall Support	14	Air Compressor
3	Floated Sludge Outlet	9	Rotating Tank Wall	15	Flocculant Feed Point
4	Clarified Water Recycle Outlet	10	Level Control Weir	16	Pressure Release Valve
5	Rotary Joint	11	Spiral Scoop	17	Purge Valve
6	Spiral Scoop Shaft	12	Recycle Pump	18	Sample Point

Daftech Engineers Pvt. Ltd.,
SCO 1A, Sector 7-C, Madhya Marg
Chandigarh - 160 019
INDIA

MSW CONSULTANT

Plastic waste recycling industry in DELHI : The quantity of plastic wastes generated in Delhi is estimated to be 300 mt per day.Plastic waste collection and segregation, recycling and reprocessing systems and promoting end-product applications with desired recyclable component based on Guidelines for Recycling of Plastics to be issued by the Bureau of Indian Standards.

we do consultancy for that.