Wastewater treatment system with automatic cleaning structure

Abstract

The invention discloses a wastewater treatment system with an automatic cleaning structure, which comprises a wastewater storage tank, a concentrated water tank, a concentrate storage tank, a first filter, a circulation pump, a UF membrane filtration zone, a treatment tank, a cleaning tank and a controller, wherein the concentrated water tank is connected to the concentrate storage tank and the first filter through a concentrate drain pipe at the bottom, the first filter, the circulation pump, the UF membrane filtration zone and the condensed water tank constitute a filtration cycle, and the cleaning tank, the circulation pump and the UF membrane filtration zone constitute a cleaning cycle; the UF membrane filtration zone comprises a flow control valve, a first flow tube, a second flow tube and a plurality of UF membrane modules, and cleaning ball catchers are arranged between the first flow tube and the UF membrane modules and between the UF membrane modules and the second flow tube.The wastewater treatment system can greatly reduce the amount of waste liquid and reduce the disposal cost of industrial waste, cleaning balls clean impurities on the inner walls of tubular UF membranes in a reciprocating manner to reduce the frequency of chemical cleaning and prolong the service life of the UF membranes, and the wastewater treatment system is under fully automatic control and isof low energy consumption.

Description

technical field [0001] The invention relates to the technical field of sewage purification, in particular to a waste water treatment system with an automatic cleaning structure. Background technique [0002] With the implementation of the new environmental protection law, all kinds of cutting fluids, cleaning fluids, release agents and electroplating waste fluids used in the metal processing industry are facing the problem of increasing discharge costs and even nowhere to discharge them. The main difficulty in the treatment of waste liquid in the metal processing industry is that the COD content of the waste liquid is too high, which far exceeds the national discharge standard. [0003] In the prior art, the treatment method of metal processing waste liquid is high in cost and energy consumption, and often requires the use of pharmaceutical additives such as adsorbents and coagulants, which is likely to cause secondary pollution and greatly reduce the service life of equipme...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to address the above deficiencies and provide a wastewater treatment system with an automatic cleaning structure to solve the problems of high waste liquid treatment costs in the metal processing industry, low service life of equipment, easy secondary pollution, and difficulty in ultrafiltration devices. The problem of high cleaning and cleaning costs

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