High efficiency ion exchange electroplating wastewater reuse treatment system

Abstract

The invention discloses a high efficiency ion exchange electroplating wastewater reuse treatment system, which comprises a comprehensive wastewater adjustment pool, a quartz sand filter, a bag filter, an ultrafilter, an ultrafiltration water production tank, an activated carbon filter, a first fine filter, a cation exchanger group, an anion exchange group, a second fine filter, a reuse water pool and a constant pressure reuse water pump. The cation exchanger group is in connection with a cation exchange regeneration system, and the anion exchange group is in connection with an anion exchange regeneration system. The wastewater reuse treatment system disclosed in the invention has the advantages that: the wastewater reuse rate is high; it can operate for 24g ceaselessly; the system combines three anion exchangers and three cation exchangers and adopts a use mode of two for use and one for standby use so as to make each barrel resin exchanged thoroughly, thus achieving energy saving and high efficiency use; and the discharged water has stable quality, and the mode of two for use and one for standby use employs a tandem operation way to achieve the characteristics of stable treated water quality and good water quality, etc. The invention completely solves the problems of low reuse rate of comprehensive wastewater, discontinuous operation, and poor reuse water quality.

Description

technical field [0001] The invention belongs to the technical field of comprehensive wastewater reuse treatment technology, and in particular relates to a high-efficiency ion exchange electroplating wastewater reuse treatment system. Background technique [0002] In the prior art, since the comprehensive wastewater includes chromium-containing wastewater, acid-base wastewater, heavy metal wastewater, and pre-treatment, the water quality is relatively complicated, and it is difficult to reuse. The traditional comprehensive wastewater reuse treatment process adopts the method of ion exchange or chemical precipitation + reclaimed water reuse, and the chemical precipitation + reclaimed water reuse process requires adding a large amount of chemicals to the wastewater to remove various pollutants, which causes wastewater The difficulty of reuse increases, the reuse rate is difficult to improve, and the quality of reused water is poor; while the traditional ion exchange treatment ...

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Problems solved by technology

[0002] In the prior art, since the comprehensive wastewater includes chromium-containing wastewater, acid-base wastewater, heavy metal wastewater and pre-treatment, etc., the water quality is relatively complicated, and it is difficult to reuse

The traditional comprehensive wastewater reuse treatment process adopts the method of ion exchange or chemical precipitation + reclaimed water reuse, and the chemical precipitation + reclaimed water reuse process requires adding a large amount of chemicals to the wastewater to remove various pollutants, which causes wastewater The difficulty of reuse increases, the reuse rate is difficult to improve, and the quality of reused water is poor; while the traditional ion exchange treatment process is one yin and one yang or two yin and two yangs, in order to ensure the quality of reused water, it must be processed before the resin is saturated. Regeneration is required, so on the one hand, the process cannot run continuously and stably; on the other hand, the resin needs to be regenerated before it is fully saturated, which greatly shortens the regeneration cycle, and invisibly increases the cost of regeneration and the waste of water resources needed to clean the resin.

The traditional ion exchange regeneration device uses 1 or 2 regeneration water tanks, which are first regenerated by acid or alkali, and then cleaned with water, which causes the regenerated cleaning water to be unable to be recycled and reused, which not only causes waste of acid and alkali, waste of regeneration and cleaning, At the same time, a large amount of cleaning water needs to be dealt with, which increases the treatment pressure of chemical precipitation virtually.

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