Filter system applied to pickling sludge leachate treatment

Abstract

The invention belongs to the technical field of leachate filtration and application, and specifically discloses a filter system applied to pickling sludge leachate treatment. The filter system is formed by a UF (Ultra Filtration) membrane filter assembly, an RO (Reverse Osmosis) membrane filter assembly and an NF (Nano Filtration) membrane filter assembly. The filter system disclosed by the invention has the advantages that 1, water produced by a biochemical system can be subjected to thorough sludge-water separation by applying an external tubular UF membrane technology, which is organically combined with the biochemical system to form an external MBR (Membrane) technology, relation separation of sludge retention time and hydraulic retention time is realized, and the active sludge concentration of the biochemical system is increased, so that the processing ability and the anti-shock loading capacity of the biochemical system are increased; 2, dealt with sewage of leachate which is high in CODcr (Chemical Oxygen Demand) concentration, a traditional concept that an anaerobic technology must be adopted is abandoned, the relation and the handling difficulties of index pollutants such as CODcr, BOD (Biochemical Oxygen Demand) 5, NH3-N, TN (Total Nitrogen) and SS (Suspended Solids) are accurately analyzed, thorough treatment is carried out by adopting an anoxic-aerobic technology, raw water is diluted by utilizing reflux of a large-proportion nitrifying solution, and a shock load effect of high-concentration sewage on the biochemical system can be avoided.

Description

technical field [0001] The invention belongs to the technical field of leachate filtration application, and in particular relates to a filter system applied to pickling sludge leachate treatment, which efficiently and stably treats the leachate thoroughly and meets environmental protection production requirements. Background technique [0002] At present, there is no economical and technical parallel treatment method for pickling sludge. The method commonly used at home and abroad is solid landfill method, and pickling sludge contains a large amount of heavy metals. Landfilling of pickling sludge Before treatment, it must be solidified and stabilized. The commonly used curing agents are cement, asphalt, glass, water glass, etc. Among them, cement is one of the most common curing agents. Cement curing refers to mixing waste with ordinary cement to form A solidified body with a certain strength, so as to achieve the purpose of reducing the leaching rate of hazardous components...

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned pickling sludge treatment process, there is a common problem of how to deal with the pickling sludge leachate. The existing treatment and filtration methods are not thorough and not environmentally friendly, and cannot completely filter out the leachate. This kind of harmful chemical composition, if forced to discharge, will cause serious environmental pollution phenomenon, also can't meet the environmental protection production requirement

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