Hazardous waste plant physicochemical heavy metal sewage recycling system

• Main Authors: PAN YONGYUE, WANG RUI, WANG ZHU, LIU YINGE, XING YANJUN, WANG ZHE, YIN JIANPENG, LI MENGJIAO
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model discloses a recycling system for physicochemical heavy metal sewage of a hazardous waste plant. The recycling system comprises a water inlet tank, a primary reaction tank, a secondary reaction tank, a flocculation reaction tank, a settling tank, a high-efficiency filter, an inorganic regulating reservoir, a defluorination and hardness removal reactor, a triple-effect evaporation system, a hydrolysis acidification pool, an anoxic pool, an aerobic pool, a UF (ultrafiltration) system and an RO (reverse osmosis) system which are arranged along the flowing direction of a hazardous waste heavy metal waste liquid, a concentrated solution outlet of the RO system is connected with the triple-effect evaporation system, and the RO system is recycled in a water production plant area; the primary reaction tank is provided with a ferrous sulfate dosing device and a sulfuric acid dosing device; the secondary reaction tank is provided with a sodium sulfide dosing device, a quick lime dosing device and a cau