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Method for treating or ganic waste water with nigh concentration

A technology for organic wastewater and wastewater treatment, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., and can solve problems that do not involve the treatment effect of high-concentration organic wastewater

Active Publication Date: 2005-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In summary, although the above methods have introduced oxidation technology in the treatment, and have carried out effective explorations in the detoxification of wastewater and sludge reduction, they have not involved the treatment effect on high-concentration organic wastewater.

Method used

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  • Method for treating or ganic waste water with nigh concentration

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Embodiment 1

[0045] Take ketone-containing wastewater (COD 11680mg / L) from a chemical plant for testing. After the pH of the wastewater is adjusted to 8.0, it enters the anaerobic biofilter with a residence time of 3 days, and then the wastewater enters the Fenton reagent oxidation reactor. 2 o 2 / COD(W / W)=3.5, Fe 2+ / H 2 o 2 Add H at a ratio of (W / W)=0.08 2 o 2 and Fe 2+ , After reacting for 180 minutes, it enters the neutralization sedimentation tank, and the pH of the effluent of the neutralization sedimentation tank is 8.0, followed by contact oxidation treatment, the residence time is 12 hours, and the water is discharged through the secondary sedimentation tank.

[0046] After the ketone-containing wastewater is treated above, the COD of the effluent is reduced to 55mg / L, which meets the national wastewater discharge standard.

Embodiment 2

[0048] The phenolic wastewater (COD 28960mg / L) from a chemical plant was used for testing. After the pH of the wastewater is adjusted to 8.0, it enters the anaerobic biofilter with a residence time of 10 days, and then the wastewater enters the Fenton reagent oxidation reactor. 2 o 2 / COD(W / W)=8.5, Fe 2+ / H 2 o 2 Add H at a ratio of (W / W)=0.08 2 o 2 and Fe 2+ , After reacting for 280 minutes, it enters the neutralization sedimentation tank, and the pH of the effluent of the neutralization sedimentation tank is 8.0, followed by contact oxidation treatment, the residence time is 16h, and the water is discharged through the secondary sedimentation tank.

[0049] After the phenolic wastewater is treated above, the COD of the effluent is reduced to 68mg / L, which meets the national wastewater discharge standard.

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Abstract

The invention relates to a kind of treatment method of high concentration organic wastewater. The invention takes anaerobic organism filter tank- Fenton reagent oxidization - contact oxidization method (A-F-O method) as the core. After adjusting PH of high concentration organic wastewater, it runs through bottom of anaerobic organism filter tank (AF), and then overflows into Fenton reagent oxidization reactor from top of AF. After reacting by some time, it runs into neutralization sedimentation tank. When having removed vestigial Fe2+ in the wastewater, it gets into contact oxidization system, then control by regular hour, and last, flux through quadratic sedimentation tank. Treated by this method, COD of high concentration organic wastewater can decline to lower than 80mg / L, so it can achieve national discharge standard. The invention has stable and reliable treating effictiveness, convenient and steerable operation, low running cost, so that it adapts to treat high concentration organic wastewater discharged by petroleum chemical enterprise and other analogous enterprises.

Description

technical field [0001] The invention relates to a treatment method of industrial waste water, in particular to a treatment method of high-concentration organic waste water. Background technique [0002] With the development of my country's industry, the wastewater discharged by many industries and enterprises has become increasingly complex. For wastewater with relatively simple components, good biodegradability, and low concentration, a more ideal treatment effect can be achieved by combining traditional processes. However, there are still some wastewaters with high concentration of organic matter, poor biodegradability, and even a certain degree of biological toxicity, which are difficult to treat with traditional processes. [0003] At present, the treatment of this kind of wastewater mostly adopts the incineration method or the large-fold dilution biochemical method after simple physical and chemical treatment. [0004] The incineration method for treating high-concent...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/14
Inventor 程学文胡家祥栾金义杜蓓王宜军
Owner CHINA PETROLEUM & CHEM CORP
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