Method and system for synchronously removing organic matters and ammonia nitrogen in wastewater

A technology for organic matter and wastewater, which is applied in chemical instruments and methods, water pollutants, biological water/sewage treatment, etc.

Pending Publication Date: 2021-04-02
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the biofilter can degrade most organic pollutants, it is difficult to achieve a good treatment effect only with the biofilter for the macromolecular organic substances that are difficult to biodegrade.

Method used

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  • Method and system for synchronously removing organic matters and ammonia nitrogen in wastewater

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Experimental program
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Effect test

Embodiment 1

[0049] Wastewater (the concentration of ammonia nitrogen is 537.1mg / L, and the concentration of COD is 963.2mg / L) enters the biological aerated filter, and under the filtration of the filter material and the treatment of microorganisms, waste water containing nitrate and macromolecular organic matter is obtained; the obtained The nitrate concentration in the waste water was 386.6mg / L.

[0050] Wastewater containing nitrate and macromolecular organic matter enters the ultraviolet irradiation pool. Under the irradiation of ultraviolet rays (ultraviolet wavelength is 254nm), nitrate ions produce hydroxyl radicals and nitrogen radicals. The role of hydroxyl radicals and nitrogen free radicals Under this condition, macromolecular organic matter decomposes to obtain small molecular substances, carbon dioxide and water. In the finally obtained waste water (ammonia nitrogen concentration is 53.8mg / L, COD concentration is 36.8mg / L).

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Abstract

The invention relates to a method and system for removing ammonia nitrogen and organic matters in wastewater. The method comprises the following specific steps: the wastewater enters a biological aerated filter, and wastewater containing nitrate and macromolecular organic matters is obtained under the filtration action of a filter material and the treatment of microorganisms; the wastewater containing nitrate and macromolecular organic matters enters an ultraviolet irradiation tank, nitrate ions generate hydroxyl free radicals and nitrogen free radicals under the irradiation of ultraviolet rays, and the macromolecular organic matters are decomposed under the action of the hydroxyl free radicals and the nitrogen free radicals, so that small molecular substances, carbon dioxide and water areobtained. The treatment effect of the macromolecular organic matters is improved, and the method is suitable for treating wastewater with higher content of macromolecular organic matters.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method and a system for synchronously removing ammonia nitrogen and organic matter in wastewater. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Industries such as petrochemical, pharmaceutical, coking, synthetic ammonia, and tanning will produce a large amount of high-ammonia nitrogen wastewater in the production process. The concentration of ammonia nitrogen will exceed 3000mg / L, and the concentration of ammonia nitrogen in wastewater generated by some production units in some industries will reach 5000mg / L, and some may even exceed 10000mg / L. If...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30C02F101/16C02F101/38
CPCC02F9/00C02F2101/30C02F2101/16C02F3/302C02F1/32C02F1/001C02F2101/38
Inventor 罗从伟王士顺武道吉谭凤训马乔成小翔王凯
Owner SHANDONG JIANZHU UNIV
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