Integrated skid-mounted treatment equipment enabling coating wastewater to meet reuse standard

Abstract

The invention discloses integrated skid-mounted treatment equipment enabling coating wastewater to meet the reuse standard. The integrated skid-mounted treatment equipment comprises a plurality of storage pools, a Fenton reactor, an integrated filter, a coagulative precipitation tank, a secondary sedimentation tank, an A / O reactor, an MBR (membrane bioreactor), an activated carbon fiber, a precision filter and an ultrafilter, wherein the storage pools comprise a guide channel waste liquid pool, an acid cleaning liquid pool, a degreasing cleaning liquid pool, a phosphatizing cleaning liquid pool and a domestic sewage pool and are connected with the Fenton reactor through metering pumps. According to the equipment, different bath solutions are pumped proportionally according to set programsand pass through a series of integrated devices including the Fenton reactor, the integrated filter, the coagulative precipitation tank, the secondary sedimentation tank, the A / O reactor, the MBR, theactivated carbon fiber, the precision filter and the ultrafilter, and finally, effluent meets the reuse standard; the whole integrated equipment is compact and reasonable in structure, has stable treatment effect and is not affected by periodic discharge of all kinds of wastewater of a coating factory, and the effluent quality is stable.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an integrated skid-mounted treatment equipment for painting wastewater that can meet recycling standards. Background technique [0002] Vehicle painting wastewater has high pollutant concentration, complex composition, large changes in water quality, and poor biodegradability. It is recognized as a difficult wastewater treatment in the environmental protection industry. [0003] The wastewater generated in the production of coating process is mainly divided into pretreatment wastewater, electrophoretic painting wastewater and spray painting wastewater. The pre-treatment wastewater comes from the processes of degreasing and phosphatizing the surface before painting, and contains emulsified oil, surfactants, phosphates, heavy metal ion fillers, solvents, etc. Electrophoretic painting wastewater is produced in the cleaning process of floating paint and bath solution atta...

AI Technical Summary

Problems solved by technology

[0004] Due to the complex composition and difficult treatment, few existing treatment methods can reach the standard of recyclability, but the present invention provides an integrated equipment specially used for the treatment of coating wastewater, which can make the treated coating wastewater reach the level of recycling standard

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