Turnkey Projects - WTP/ WTE

Zero liquid discharge is a wastewater recovery process of industrial effluents



PSTM offer Trunkey solution for high TDS Effluent water treatment which basically works on thermal separation technique in which water get evaporated and recycled in process system, while mixed salts get recovered from Dryer.

Based on Effluent Characteristic, PSTM ZLD offer below scheme in Zero Liquid Discharge
1) Primary Treatment
2) Evaporation Plant
3) Dryer / Centrifuge

PSTM design the Salt Recovery system to recover the Salts from the process water / Effluent. Salt Recovery System comprises Evaporation / Concentration Plan along with Crystallizer and when liquid mixture tends to salt precipitation it passed in pusher Centrifuge/ Basket Centrifuge in which water & Salts get separated.

A partial list of treated salts and products is listed below and explains our level of skills and capabilities:

Aluminum Chloride - Ammonia
Ammonium Chloride - Ammonium Nitrate
Ammonium Sulphate - Calcium Chloride
Calcium Sulphate - Ferrous Sulphate
Manganese Sulphate - Mercerizing Caustic
Monoethylene Glycol - Phosphoric Acid
Potassium Chloride - Potassium Sulphate
Sodium Acetate - Sodium Carbonate
Sodium Chloride - Sodium Hydroxide
Sodium Nitrate - Sodium Phosphate
Sodium Silicate - Sodium Sulphate
Sodium Thiosulphate - Sulphur Dioxide
Sulphuric Acid

Multiple Effect Evaporator
It is a type of heat transfer equipment that uses natural convection or forced convection for the transfer of heat.

Steam is used in the evaporator to heat up a solution containing a desired product. When the solution is heated, the water in it is converted into vapour, which is condensed.
The vaporized concentrated solution is then removed or fed into a second evaporator for a further concentration process.