Method for treating organic wastewater containing high-concentration ammonia nitrogen

A technology for organic wastewater and treatment methods, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Impact resistance, the effect of reducing investment and operating costs, and reducing equipment size

Inactive Publication Date: 2011-06-22
中建中环新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, to propose a treatment method for high-concentration ammonia-nitrogen organic wastewater, to solve the problems of high-concentration ammonia-nitrogen-containing organic wastewater treatment, high investment and operating costs, poor impact load resistance, etc.

Method used

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  • Method for treating organic wastewater containing high-concentration ammonia nitrogen
  • Method for treating organic wastewater containing high-concentration ammonia nitrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for treating organic waste water containing high-concentration ammonia nitrogen is realized in the following steps:

[0022] The first step, preprocessing

[0023] The landfill leachate with an organic matter concentration of 12000-15000mg / LCODcr and an ammonia nitrogen concentration of 1500-2000mg / L first passes through the sedimentation tank to adjust the water quality and quantity, and settles the mud in the leachate; then enters the dosing coagulation air flotation tank to remove seepage Suspended solids, chroma, heavy metal ions and COD in the filtrate. The chemicals added to the coagulation flotation tank are PAC and PAM.

[0024] The second step, anaerobic treatment

[0025] The effluent from the coagulation air flotation tank enters the UASB reactor, the hydraulic retention time is 120h, and the removal rate of organic matter is 70%.

[0026] The third step, membrane bioreactor system

[0027] The effluent of UASB enters the membrane bioreaction sys...

Embodiment 2

[0029] A method for treating organic waste water containing high-concentration ammonia nitrogen is realized in the following steps:

[0030] The first step, preprocessing

[0031] The food processing wastewater with an organic matter concentration of 5000-6000mg / LCODcr and an ammonia nitrogen concentration of 400-500mg / L first passes through the sedimentation tank to adjust the water quality and quantity; then enters the dosing coagulation air flotation tank to remove suspended solids, chroma and COD in the wastewater . The agent added to the coagulation flotation tank is PFS.

[0032] The second step, anaerobic treatment

[0033] The effluent from the coagulation air flotation tank enters the UASB reactor, the hydraulic retention time is 40h, and the removal rate of organic matter is 60%.

[0034] The third step, membrane bioreactor system

[0035] The effluent from UASB enters the membrane bioreaction system for treatment. The concentration of organic matter in the influ...

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Abstract

The invention belongs to the technical field of environment protection and particularly relates to a treatment process of organic wastewater containing high-concentration ammonia nitrogen, which is characterized by comprising the following steps: 1, carrying out pretreatment; 2, carrying out anaerobic treatment, and leading effluent from a coagulation/air floatation pool to an upflow anaerobic sludge blanket (UASB) reactor, wherein the hydraulic power stays for 40 to 120 hours; and 3, treating in a membrane bioreactor system. Through microanaerobic/aerobic environments on a surface layer, as well as the absorption by a microporous structure and biological oxidation action, various pollutants such as organic matters, nitrogen and phosphorus in the wastewater can be removed from wastewater of an ecological base flow, and when the ecological base flow is introduced to a membrane biological reactor (MBR) system, the impact resistance and treatment efficiency of the biological treatment unit can be improved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a treatment process for organic waste water containing high-concentration ammonia nitrogen. Background technique [0002] Landfill leachate and wastewater produced in petrochemical, printing and dyeing, pharmaceutical, food processing and other industries contain both high concentrations of organic matter and high concentrations of ammonia nitrogen. This type of wastewater is a difficult point in the field of sewage treatment. [0003] The removal methods of ammonia nitrogen in wastewater mainly include physical chemical method and biological method. Physical and chemical methods mainly include stripping method, break point chlorination method, membrane absorption method, chemical precipitation method and so on. The removal of ammonia nitrogen in wastewater by physical and chemical methods is fast and effective, but the physical and chemical method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 陈飞李红军闫懂懂封琦君丁昊熊洋
Owner 中建中环新能源有限公司
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