Siemens Water Technologies will provide wastewater treatment solutions to China Petroleum & Chemicals Anqing refinery in Anhui Province, China.

The solutions include a powdered activated carbon treatment (PACT) system, a wet air regeneration hydrothermal unit and a Hydro-Clear sand filtration system.

The three-tier system will treat salty and oily wastewater from refining and petrochemical production activities from existing and upgraded units.

The 1,000m³ per hour Anqing system will help Sinopec discharge a cleaner effluent and also generate approximately 500m³ per hour of reusable water.

The refinery will reuse the treated water for its cooling tower system, which will help to further offset the strain on Chinas surface water bodies.

The PACT system will combine biological treatment and carbon adsorption into a single, synergistic treatment step to remove organics.