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Method and apparatus for treating acid and alkaline waste water

A treatment process, acid wastewater technology, applied in the direction of water/sewage multi-stage treatment, neutralized water/sewage treatment, water/sludge/sewage treatment, etc. To ensure the long-term stable operation of the system, the lack of operability in the amount of neutralizing agent, etc., to achieve the effect of compact structure, small investment and convenient management

Inactive Publication Date: 2007-04-25
辽宁三和环境工程有限公司
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Problems solved by technology

The disadvantages of this method are: the consumption of new industrial water is increased, the load of the system is increased, and the lime milk preparation and delivery pipelines are easily blocked, which increases the difficulty of operation and workload
The Chinese Invention Patent No. 200410005161.6 discloses a treatment method for cold-rolled acid wastewater in the metallurgical industry. The disadvantage of this method is that the neutralizer used comes from other industries and is highly dependent, which is not enough to ensure the long-term stable operation of the system.
The dosage of the neutralizer mentioned above lacks operability and is not enough to realize the full automation of the system and ensure the long-term stable operation of the system

Method used

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  • Method and apparatus for treating acid and alkaline waste water

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, process of the present invention is described in detail:

[0024] 1) Acid-base wastewater treatment: The acid-base wastewater discharged by each unit flows into two acid-base wastewater adjustment tanks respectively. The adjustment tanks are equipped with an aeration system and a liquid level gauge is installed in the adjustment tanks;

[0025] Coarse adjustment: the effluent from the acid adjustment tank and the alkali adjustment tank is pumped into the primary neutralization aeration tank with a coarse adjustment pump. The PH meter control (frequency conversion control) of the pool effluent, the dosage is calculated and confirmed by the PLC through the mathematical model, and the PLC signal comes from the pH value in the acid adjustment pool and the alkali adjustment pool;

[0026] Fine-tuning: the effluent from the primary neutralization tank enters the secondary neutralization tank, and in the secondary neutralization ...

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Abstract

The invention discloses a disposing technique of industrial acid-base waste water, which is characterized by the following: adopting industrial acid waste water and industrial alkaline waste water as raw material; neutralizing; condensing; sedimenting; dehydrating for sludge; making the water reach draining standard (COD<=100mg / l;SS<=mg / l); calculating flow of waste acid and base through PLC mathematical mould; reducing the consumption of industrial water; introducing self-adjusting K coefficient in the system fluctuating condition; generating more rational value automatically; improving system intelligence; interfering artificially according to experience.

Description

technical field [0001] The invention relates to a purification treatment process and equipment for industrial acid-base wastewater. Background technique [0002] In the prior art, the acidic waste water is aerated into the neutralization tank in the adjustment tank, and the pre-prepared milk of lime is poured into the neutralization tank. The method of formulating the milk is generally fresh water from the lime powder processing industry. The disadvantages of this method are: the consumption of new industrial water is increased, the load of the system is increased, and the lime milk preparation and delivery pipelines are easily blocked, which increases the difficulty of operation and workload. The Chinese Invention Patent No. 200410005161.6 discloses a treatment method for cold-rolled acid wastewater in the metallurgical industry. The disadvantage of this method is that the neutralizer used comes from other industries and is highly dependent, w...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/66C02F1/52
Inventor 董德刚冯俊
Owner 辽宁三和环境工程有限公司
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