Technology and apparatus for treating oil-containing alkaline waste water

A technology for treating process and waste water, which is applied in biological water/sewage treatment, flotation water/sewage treatment, neutralization water/sewage treatment, etc. It can solve the problem that it is not enough to realize the automatic long-term stable operation of the system and the inability to achieve advanced treatment for a long time , Non-compliance with environmental protection requirements and other issues, to achieve the effect of compact structure, small investment and convenient management

Inactive Publication Date: 2008-05-21
辽宁三和环境工程有限公司
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  • Application Information

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Problems solved by technology

[0003] The treatment method in the prior art is pure physical and chemical treatment, and the oil content in the effluent is high, which cannot meet the requirements of advanced treatment for a long time
The above energy consumption is large, it is not energy-savi...

Method used

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  • Technology and apparatus for treating oil-containing alkaline waste water

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing, process of the present invention is described in detail:

[0019] 1) Alkaline wastewater treatment: the oily alkaline wastewater discharged from the unit flows into the alkali adjustment tank, where a pH meter and a liquid level gauge YW are installed.

[0020] PH adjustment: the effluent from the alkali adjustment tank is pumped into the first-level neutralization tank by a lift pump, and reacts with alkaline wastewater by adding acidic water in the first-level neutralization tank. The PH meter is controlled by frequency conversion, and the dosage is calculated and confirmed by PLC through mathematical models. The PLC signal comes from the pH value in the alkali adjustment pool and acid tank.

[0021] Fine-tuning: the effluent from the primary neutralization tank enters the secondary neutralization tank, and in the secondary neutralization tank, there are two other sets of spent acid and alkali pumps with a smaller flow r...

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Abstract

The invention relates to an oil-containing alkaline wastewater treatment process and equipment. The process uses oil-containing alkaline wastewater and industrial acid water as raw material for the neutralization reaction. Qualified water after the neutralization reaction is pre-treated through an air floatation method, enters a biochemical reaction pool for the biochemical treatment when being cooled by a cooling tower and aerates in the biochemical pool. Oil in the water is degraded by microorganism. The sludge settlement treatment is implemented through a sediment pool to remove suspenders in the water. The wastewater after the sediment enters a biological filter again for the deep treatment to satisfy the discharging requirements. After the treatment, the index COD of the water is less than or equal to 80mg/l, SS is less than or equal to 10mg/l and oil is less than or equal to 5mg/l. With the biochemical technology used for the oil removal, the consumption of a system is reduced. With the biological filtration used as a deep treatment system, the consumption of ore fillers is reduced. The invention has the advantages of less investment, low operation cost, wide resource, sufficient reaction, good treatment effect, compact structure and convenient management.

Description

technical field [0001] The invention relates to a purification treatment process and equipment for industrial oily alkaline wastewater. Background technique [0002] In the prior art, the oil-containing alkaline wastewater is pumped into the neutralization tank from the adjustment tank, and acid water is poured into the neutralization tank, and after neutralization, it is deoiled by air flotation, and then enters the degreasing filter for deep degreasing. [0003] The treatment method in the prior art is a pure physical and chemical treatment, and the oil content in the effluent is high, which cannot meet the requirements of advanced treatment for a long time. The above energy consumption is large, not energy-saving itself, and consumes a lot of mineral filter materials, resulting in secondary pollution, which does not meet environmental protection requirements, and is not enough to realize the full automation of the system and ensure the long-term stable operation of the sy...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/12C02F1/66C02F1/24C02F1/52
CPCY02W10/10
Inventor 沈宏艳冯俊董德刚
Owner 辽宁三和环境工程有限公司
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