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Oily wastewater treatment method

A waste water treatment and waste water technology, applied in the direction of oxidized water/sewage treatment, etc., can solve the problems of long cycle and large investment, and achieve the effect of enhanced pollution holding capacity, low consumption and large reduction

Inactive Publication Date: 2012-07-18
杨政宏 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to solve the problem that the water treated by the existing wastewater treatment equipment is difficult to meet the new discharge standards, and the rebuilding or rebuilding of the wastewater treatment equipment up to the standard requires a large investment and a long period. The wastewater treatment equipment is transformed to meet the new discharge standard oily wastewater treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 shown.

[0042] A kind of oily waste water treatment method, it is to install between any two processing equipment A, B of conventional waste water treatment process and can produce OH - The advanced oxidation treatment device CAOT of the activated gas makes the waste water flowing out of the first treatment equipment A and the OH-containing water produced by the advanced oxidation treatment device CAOT - The activated gas is mixed with air to generate CAOT activated water in the wastewater, and then the wastewater containing CAOT activated water enters the catalytic bed for catalytic reaction with the catalyst and then enters the second treatment equipment B to improve the second treatment equipment B purification and separation ability to control the OH - The volume ratio of the activated gas to the waste water is between 1% and 20%, and the residence time of the waste water on the catalytic bed is controlled between 2 and 1500 seconds.

[0043] Amon...

Embodiment 2

[0045] Such as figure 2 shown.

[0046] This embodiment is a typical refinery wastewater treatment process, from figure 2 It can be seen from the figure that OH-activated gas treated by CAOT can be added in any step of the whole treatment process to generate activated water to improve the treatment effect and reduce the load on the original equipment. The activation gas effect is the best, but the corresponding investment is also large. If only an advanced oxidation treatment device CAOT is installed in the air flotation treatment device, it can also meet the emission requirements and improve the treatment efficiency and purification level of the entire treatment process. If the wastewater treated by the sewage treatment device needs to be further treated as domestic water, the final step is to install an advanced oxidation treatment device CAOT in the filter equipment after the biological bed, see Example 3 for details.

[0047] Specific application examples:

[0048] ex...

example 2

[0055] Take the 20,000-ton tap water plant as an example

[0056] 2.1 Install CAOT equipment before the water intake pump, connect the suction port to the inlet of the CAOT equipment, and connect the outlet of the CAOT equipment to the delivery pipeline;

[0057] 2.2 Install CAOT equipment before the purification process, connect the incoming water pipeline to the inlet of the CAOT equipment, and connect the outlet of the CAOT equipment to the purification process equipment;

[0058] 2.3 When the purification equipment is flotation, a part or another water body is taken to be treated by CAOT equipment, and the treated water merges and diffuses with the large water body;

[0059] 2.4 Collect the sewage discharged from each process section of the waterworks, and send it to the CAOT equipment for treatment after being lifted. The outlet of the CAOT equipment is connected to the water supply pipeline of the waterworks or the water source buffer pool;

[0060] Example 3.

[0061]...

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Abstract

The invention relates to an oily wastewater treatment method which is characterized by comprising the following steps of: adding one advanced oxidation treatment device (CAOT) capable of generating activated gas containing OH- between any two treatment apparatuses in the conventional wastewater treatment technology, mixing the wastewater flowing out of the first treatment apparatus with air of activated gas containing OH- generated by the advanced oxidation treatment device (CAOT), generating CAOT activated water in the wastewater, leading the wastewater containing the CAOT activated water into a catalytic bed to perform a catalytic reaction with a catalyst, leading the products into the second treatment apparatus to improve the purification and separation capability of the second treatment apparatus, controlling the volume ratio of the OH- activated gas to the wastewater between 1% and 20%, and controlling the residence time of the wastewater on the catalytic bed between 2 s and 1500 s. The oily wastewater treatment method has the advantages of low investment and low cost, and the emission standards and the treatment efficiency are improved.

Description

technical field [0001] The invention relates to a wastewater treatment method, especially a treatment method for oily wastewater that can improve wastewater treatment efficiency and discharge standards, and can be directly used to transform existing treatment equipment and reduce wastewater treatment costs, specifically It is a treatment method for oily wastewater in refineries. Background technique [0002] At present, with the increasing requirements of environmental management, conventional purification and separation methods are increasingly insufficient. It is difficult for the original purification and separation devices to meet the new management requirements, and waste and reconstruction will cause great waste. Using the old conventional process to meet the new environmental control standards requires a very long process, and the increased operating costs are also considerable. The potential of conventional purification and separation treatment processes needs to b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 杨政宏方庆京江奇志方振堃任杨宏安
Owner 杨政宏
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