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Ozonation process and equipment for oil-containing alkali wastewater

An ozone treatment and alkaline technology, which is applied in the direction of flotation water/sewage treatment, neutralized water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problem that it is not enough to realize the long-term stable operation of the system fully automatic, and cannot reach the depth for a long time Deal with problems such as environmental protection and non-compliance with environmental protection requirements, and achieve the effect of compact structure, small investment and convenient management

Inactive Publication Date: 2010-12-15
辽宁三和环境工程有限公司
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Problems solved by technology

[0003] The previous treatment method was pure physical and chemical treatment, and the oil content in the effluent was high, which could not meet the requirements of advanced treatment for a long time
The above energy consumption is large, it is 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 system

Method used

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  • Ozonation process and equipment for oil-containing alkali wastewater
  • Ozonation process and equipment for oil-containing alkali wastewater

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, process of the present invention is described in detail:

[0021] 1) Treatment of acid-base wastewater; the oil-containing alkaline wastewater discharged from the unit flows into the alkali adjustment tank, and a pH meter and a liquid level gauge YW are installed in the adjustment tank;

[0022] PH adjustment: the effluent from the alkali adjustment tank is pumped into the primary neutralization tank. In the neutralization tank, acid water and waste water are used to react by themselves. Control), 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;

[0023] Fine-tuning: The effluent from the primary neutralization tank enters the secondary neutralization tank, and in the secondary neutralization tank, another set of waste acid pumps with a smaller flow rate are put into the waste acid again t...

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Abstract

The invention relates to a process for treating alkaline waste water with oil by using ozone, which comprises the steps: the industrial alkaline waste water with the oil and industrial acid water is taken as material and neutralized; the flow is calculated by PLC through a mathematical model and the flow calculation is accurate; the air flotation is used to carry out pre-treatment and the water after the pre-oxidization is discharged into an ozone pool; the ozonation gas is exposed in the ozone pool and the strong oxidizability of the ozone is used for resolving the oil in the water; then, the oil is treated by the depth treatment from a contact oxidation tank, thus reducing the pollutants discharge in the water and meeting the requirements of the water discharge. Index of the discharge water: the oil is equal or less than 5mg / l, the COD is equal or less than 70mg / l, the SS is equal to or less than 10mg / l; waste alkali neutralization is calculated through PLC by mathematical model andthe flow calculation is accurate; the oil is removed by the ozone, thus reducing consumption of the system; the contact oxidization tank is used as a depth treatment system, thus reducing the consumption of ore filler and being able to start and stop randomly; the system has high intellectualization and can be intervened manually based on the experience. The invention has advantages of low investment, low operation cost, wide resources, complete reaction, favorable 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 previous treatment method was pure physical and chemical treatment, and the oil content in the effluent was high, which could not 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 system....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/66C02F1/78C02F1/52C02F1/24C02F9/04
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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