Regeneration process technology for sewage in refinery

A technology for treating process and refining sewage, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of rapid water quality decline in circulating cooling water systems and the inability of reductive pollutants Removal, difficult to achieve long-term reuse and other problems, to achieve the effect of low infrastructure and operating costs, significant removal effect, and good novelty

Inactive Publication Date: 2003-08-06
PETROCHINA CO LTD +1
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Problems solved by technology

Since the sewage regeneration process is only effective for the removal of SS and turbidity, the dissolved pollutants, especially the reducing substances, cannot be effectively removed. After a period of sewage reuse, microorganisms still grow in large numbers, and the water quality of the circulating cooling water system declines. soon
[0006] Some researchers have developed a membrane filtration system for advanced treatment of refinery sewage, which can be reused in various ways of water demand. Although it has a good removal effect on suspended solids, turb...

Method used

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  • Regeneration process technology for sewage in refinery
  • Regeneration process technology for sewage in refinery

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Embodiment

[0071] In 2000, a refining and chemical company adopted the process of the present invention to establish an operating device with a daily water treatment capacity of 12 to 24 tons of external drainage. The results of 8 consecutive months of stable operation show that the process has strong decontamination ability and the water quality after sewage regeneration treatment is excellent. , and the removal effects of the main pollutants are shown in Table 1.

[0072] Table 1. Changes in pollutant concentration before and after sewage regeneration (multi-month average)

[0073] It can be seen that this process has a good removal efficiency for the pollutants in the external drainage. After the sewage is regenerated, it is clear and colorless, the concentration of pollutants is very low, and the number of bacteria is small. It can be used as industrial fresh water and domestic miscellaneous water.

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Abstract

The present invention relates to a sewage regeneration treatment process for oil-refining industry and petro-chemical industry. Said treatment process system includes suspension filler biological contact oxidation depth treatment, flocculating setting quartz sand filtration, ozone partial oxidation, biological active carbon and disinfection treatment units. Its application range is extensive, operation stability is good, impact resistance is strong and pollutant-removing efficiency is high. It not only can completely remove SS of outward-discharged water, its turbidity, can effectively reduceCODcr, NH3-N, BOD5, oil, sulfide and phenol, etc., but also has the obvious effect for removing macromolecular organic matter, and can completely remove colour for water, and its energy consumption is low, its regenerated water is good in quality.

Description

technical field [0001] The invention is suitable for the advanced treatment and regeneration of sewage in industries such as refinery, petrochemical and light industry, and is specifically a regeneration treatment process for refinery sewage. Background technique [0002] In recent years, the phenomenon of water shortage in our country has become increasingly serious, which has threatened the normal production and life of enterprises. Sewage reuse is the only way for enterprises to solve water shortage, improve the utilization rate of water resources, reduce production costs, reduce environmental pollution, and promote sustainable development of enterprises. There are many types and high concentrations of pollutants in the sewage of refining and chemical enterprises, mainly including oil and COD cr , NH 3 -N, BOD 5 , sulfide, phenol, SS, cyanide, and trace macromolecular organic matter, etc. At present, the treatment of sewage generally adopts the process of "oil separati...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/04
Inventor 陈洪斌庞小东齐庆利李建忠周光霞唐贤春高廷耀周增炎
Owner PETROCHINA CO LTD
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