System for treating and recycling waste water resulting from lithium battery production
A recovery system and wastewater production technology, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as inability to recycle, energy waste, etc.
Active Publication Date: 2016-02-03
ANHUI ZHONGHUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology
Most of the existing wastewater treatment systems decompose and dispose of the organic matter and suspended matter in it, and cannot recycle the NMP in it, resulting in a waste of energy
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[0015] See figure 1 A treatment and recovery system for lithium battery production wastewater, including a workshop sump 1, a pH adjustment tank 2, a coagulation reaction tank 3, a flocculation reaction tank 4, a high-efficiency sedimentation tank 5, an intermediate tank 6, a first Filter 7 and second filter 8 and reuse water tank 9, NMP recovery system 18;
[0016] The filter inlet and outlet of the first filter 7 and the second filter 8 are provided with differential pressure transmitters 10, and the first filter 7 and the second filter 8 are provided with filter inlet and outlet valves 11 and backwash inlet and outlet The water valve 12, the first filter 7 and the second filter 8 are connected with a water inlet pump 13 connected to the filtered water inlet, a backwash pump 14 connected with the backwash water inlet, and a differential pressure transmitter 10 , filter inlet and outlet valves 11, backwash inlet and outlet valves 12, inlet pumps 13 and backwash pumps 14 are ...
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The invention discloses a system for treating and recycling waste water resulting from lithium battery production. The system comprises a workshop collecting tank, a pH value adjusting tank, a coagulation reaction tank, a flocculation reaction tank, an efficient precipitation tank, an intermediate tank, a selective filter, a reuse water tank, and an NMP recovery system, which are connected in sequence. The reuse water tank is internally provided with an NMP monitoring instrument, and is connected to the NMP recovery system through the NMP recovery pump; both the NMP monitoring instrument and the NMP recovery pump are connected to a main controller. In the system, waste water resulting from lithium battery production is subjected to pH value adjustment and coagulation and flocculation treatment, precipitation, and selective filtration of suspended particles; the impurities, such as suspended particles, are separated; the treated reuse water is recycled for reuse and is retreated until the concentration of NMP in the reuse water back to the reuse water tank reaches a recycling standard; and the obtained water is pumped into the NMP recovery system through the recovery pump. NMP is subjected to treatment and purification, and utilization of waste products is realized.
Description
technical field [0001] The invention relates to the field of treatment of production wastewater, in particular to a treatment and recovery system for lithium battery production wastewater. Background technique [0002] In the lithium battery production plant area, the water source is mostly used for the production wastewater of the positive electrode mixing tank and coating machine, and the wastewater contains a large amount of organic solvents such as N-methylpyrrolidone (NMP). Most of the existing wastewater treatment systems decompose and dispose of the organic matter and suspended matter in it, and cannot recycle the NMP in it, resulting in a waste of energy. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a treatment and recovery system for lithium battery production wastewater, which can separate and treat suspended solids in lithium battery production wastewater. At the same time, when the concentration of...
Claims
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IPC IPC(8): C02F9/04C07D207/267C02F101/38
Inventor 何晓锋刘俊章长江闫珍
Owner ANHUI ZHONGHUAN ENVIRONMENTAL PROTECTION TECH CO LTD