Anion and cation bed regeneration sewage treatment pH control system

Abstract

The invention relates to an anion and cation bed regeneration sewage treatment pH control system. The system comprises an anion and cation bed regeneration sewage treatment front control part, a central control room, an anion and cation bed regeneration sewage control station and a power distribution room. By a complete pipeline neutralization mode and a regulation and control technology, througha control combination with a lift pump, sewage in a buffer tank is mixed and subjected to neutralization reaction by a static mixer, the lift pump is completely or partially controlled by a frequencyconverter to ensure that premixing, dosing and discharging operation can be performed as long as acidic sewage exists in the buffer tank, the existing acid and alkali in the sewage are furthest used for preneutralization, buffering and discharging are performed simultaneously, and the utilization efficiency of the buffer tank is improved.

Description

technical field [0001] The invention relates to a control system for sewage treatment, in particular to a pH control system for treatment of yin-yang bed regeneration sewage. Background technique [0002] The traditional yin and yang bed regeneration wastewater treatment pH control system is basically done manually. Generally, there are two or more sets of buffer pools, and each set of buffer pools also serves as a neutralization pool. The treatment process is roughly through the circulation of the lifting pump. In a group of buffer pools, the positive bed regenerated sewage and the negative bed regenerated sewage are pre-neutralized by stirring, and then a certain amount of acid / alkali is added to make it meet the discharge standard, and then the discharge valve is opened and closed. The backflow valve discharges; at this time, other buffer pools collect the regenerated sewage of the anion and yang beds. Each group of buffer pools is used alternately according to buffer a...

AI Technical Summary

Problems solved by technology

The main problem is that the buffer pool is tight, because one group must be used as a neutralization pool in the buffer pool, and the neutralization reaction can be reused after the discharge is completed, and the use efficiency is greatly reduced, resulting in a tight volume of the buffer pool; labor intensity is high, Although electric valves and on-line instruments are installed on the site of some anion-yang bed regeneration sewage treatment sites, neutralization and discharge must be completed by manual operation, and the labor intensity of the operators is relatively high;

[0003] The consumption of electricity and chemical solution is large, the volume of the buffer pool is not enough, and the sewage is too acidic / alkaline, so acid / alkali liquid must be added for neutralization. In theory, only lye needs to be added, and the added acid is actually a waste; pre-neutralization It is achieved through the circulation of the lifting pump, and some buffer pools are also equipped with agitators, which consume a lot of power

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