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A treatment process for high-concentration refractory sewage

A kind of treatment process, refractory technology, applied in water/sewage treatment, water/sewage multi-stage treatment, biological water/sewage treatment and other directions, can solve the problems of high cost and unsuitable for large-scale sewage treatment, to reduce the dosage, promote The formation of hydroxyl radicals and the effect of improving utilization

Active Publication Date: 2021-07-06
北京翰祺环境技术股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The efficiency of removing COD by physical methods can reach 50-80%, but the cost is high and it is not suitable for the treatment of large amounts of sewage

Method used

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  • A treatment process for high-concentration refractory sewage
  • A treatment process for high-concentration refractory sewage
  • A treatment process for high-concentration refractory sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: a kind of treatment process of high-concentration refractory sewage, combined with figure 1 , including sequentially connected first-stage carbon adsorption area, pre-ozone catalytic oxidation, MBBR biochemical treatment, second-stage carbon adsorption treatment area, post-ozone catalytic oxidation and third-stage carbon adsorption treatment area.

[0034] The first-stage carbon adsorption treatment area includes successively connected activated carbon adsorption area, coagulation area, flocculation area and precipitation area; the second-level carbon adsorption treatment area and the third-level carbon adsorption treatment area both include activated carbon adsorption area, activated carbon precipitation area, Coagulation zone, flocculation zone and sedimentation zone.

[0035] The above process was used to treat the anammox effluent of a sewage treatment plant. The water quality of the sewage is shown in Table 1.

[0036] Table 1 Anammox effluent of a s...

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Abstract

The invention relates to a treatment process for high-concentration refractory organic sewage. The sewage to be treated sequentially passes through the first-stage carbon adsorption treatment area, pre-ozone catalytic oxidation, MBBR biochemical treatment, second-stage carbon adsorption treatment area, post-ozone catalytic oxidation, The third-level carbon adsorption treatment area; the first-level carbon adsorption treatment area, the second-level carbon adsorption treatment area and the third-level carbon adsorption treatment area all include activated carbon adsorption areas, and the activated carbon discharged from the third-level carbon adsorption treatment area is refluxed to the third-level carbon adsorption treatment area. The first-stage carbon adsorption treatment area and / or the activated carbon adsorption area in the second-stage carbon adsorption treatment area, and the residual ozone in the pre-ozone catalytic oxidation and post-ozone catalytic oxidation is used in the activated carbon adsorption area in the first-stage carbon adsorption treatment area. Using the above process to treat sewage can greatly improve the efficiency of sewage treatment, reduce costs and stabilize the process.

Description

technical field [0001] The invention relates to the field of industrial sewage treatment, in particular to a treatment process for high-concentration refractory sewage. Background technique [0002] With the rapid development of industry, the number of types of wastewater is increasing rapidly, and the pollution of water bodies is also becoming more and more serious. The composition and types of industrial wastewater are more complex and more difficult to deal with. [0003] For example, municipal sludge anaerobic ammonium oxidation effluent and landfill leachate are high-concentration, high-pollution and refractory organic wastewater. These waters contain aerobic organic pollutants and various metals and ammonia nitrogen compounds. The concentration of COD and BOD in this water quality is as high as tens of thousands, which is much higher than that of urban sewage. [0004] In addition, there are non-chlorinated aromatic compounds such as naphthalene and phenanthrene, chl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/283C02F1/52C02F1/722C02F1/725C02F1/76C02F3/1268C02F9/00C02F2001/007C02F2209/08C02F2301/08
Inventor 王晓阳汪德罡左长永谢晓朋冯晓虎
Owner 北京翰祺环境技术股份有限公司
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