Coking wastewater zero discharge treatment system and treatment method thereof

• Main Authors: LIU ZHONGNAN, BAI JIANJIANG, FAN DEQIANG, MIAO RUXUE, GUO JIA, MA HAIBO, WANG FULI, LIAN ZHENGJUN
• Format: Patent
• Language: Chinese; English
• Published: 15.11.2022
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a coking wastewater zero discharge treatment system and a treatment method. The treatment system comprises a pretreatment system, a biochemical process treatment system, an advanced treatment system and a concentrated water zero discharge system which are connected in sequence, the pretreatment system comprises an oil separation tank and a first air floatation tank; the biochemical process treatment system comprises an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a contact oxidation tank and a flocculation sedimentation tank which are communicated in sequence; the concentrated water zero discharge system comprises a Fenton reaction tank, a second air floatation tank, a medium filtering device, a first ultrafiltration device, a primary reverse osmosis device, a sea-fresh reverse osmosis device and a concentrated water tank which are connected in sequence; the concentrated water zero discharge system comprises an efficient sedimentation tank device, an