Spent Caustic Treatment
Spent caustic streams from the downstream of the oil and gas industries consist of very high COD levels and several other hazardous contaminants such as sulfides, mercaptans, sodium salts etc. Due to these contaminants in refinery spent caustic, these wastewaters are difficult to treat and very harmful to the environment. Consequently, spent caustic treatments can be both challenging and expensive.
These complex wastewaters are difficult to treat using conventional wastewater processes. Traditionally various spent caustic disposal techniques were adopted for disposal of spent caustics such as deep well injection, dosing at an extremely low rate into very large biological wastewater treatment plants, incineration, wet air oxidation or transport and disposing. Aquatech’s spent caustic treatment systems offer the best alternative to conventional disposal practices and are the environmentally friendly solution for spent caustic treatment.