Overview
Industrial wastewater must meet discharge standards or reuse specifications before leaving the plant boundary. In petrochemical, refinery, and LNG operations, effluent streams carry suspended solids, emulsified hydrocarbons, heavy metals, and elevated COD/BOD, all of which require targeted chemical treatment before biological polishing or direct discharge. Effective wastewater chemistry reduces compliance risk, disposal costs, and environmental liability.
Coagulants
Inorganic and organic coagulants for charge neutralisation and destabilisation of suspended and colloidal solids in wastewater streams.
- PAC (Polyaluminium Chloride)
- Ferric Chloride
- Ferrous Sulphate
- Organic Coagulant (PolyDADMAC)
Flocculants
High molecular weight polyacrylamide polymers for floc bridging and rapid sludge settling in clarification and dewatering stages.
- Anionic Polyacrylamide
- Cationic Polyacrylamide
- Non-ionic Polyacrylamide
pH Adjustment
Alkalis and acids for neutralisation and pH correction to meet discharge limits and optimise coagulation performance.
- Lime (Calcium Hydroxide)
- Caustic Soda
- Sulphuric Acid
- Hydrochloric Acid
Heavy Metal Precipitants
Inorganic and organic precipitants for removal of dissolved heavy metals (Cu, Zn, Ni, Cr, Pb) to below regulatory discharge limits.
- Sodium Sulphide
- Organosulphide (TMT-15)
- Sodium Dimethyldithiocarbamate (DTC)
Decolourants
Polymeric and iron-based decolourants for removal of residual colour from textile, dye, and chemical manufacturing effluent.
- Polymeric Decolourant
- Ferric-based Decolourant
BOD/COD Treatment
Nutrient supplements and biological cultures to support and enhance aerobic and anaerobic biological treatment performance.
- Nutrient Supplements (Urea, DAP)
- Bio-augmentation Cultures