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Method for determining OUR early warning value of comprehensive pipe-connecting sewage plant

A technology of early warning value and sewage treatment plant, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve unscientific and inaccurate problems, achieve simple methods and accurate conclusions Effect

Active Publication Date: 2020-09-22
NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the unscientific and inaccurate problems in the existing comprehensive takeover sewage plant through the method of determining the OUR early warning value described in the background technology, the present invention provides a method for determining the OUR early warning value of the comprehensive takeover sewage plant, so as to achieve the The purpose of scientific and accurate early warning of incoming water quality

Method used

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  • Method for determining OUR early warning value of comprehensive pipe-connecting sewage plant
  • Method for determining OUR early warning value of comprehensive pipe-connecting sewage plant

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Taking a fine chemical industry park in northern Jiangsu as an example, the enterprises in this chemical industry park are mainly engaged in the production of pharmaceuticals, pesticides, dyes and corresponding intermediates, with a wide variety of products, such as glyphosate, imidazole aldehyde, naphthol, triazone, p-hydroxybenzene Methyl ether etc. The enterprise pre-treats the wastewater generated through the wastewater treatment station, and then discharges it into the integrated sewage treatment plant through one enterprise and one pipe. This sewage plant adopts the process of "pretreatment + hydrolysis acidification + primary sedimentation tank + A / O + secondary sedimentation tank + flocculation sedimentation". The following steps are used to determine the OUR early warning value of this sewage plant:

[0027] (1) Monitor once a day the activated sludge in the aerobic pool of the comprehensive takeover sewage plant OUR 内源 ;

[0028] (2) Monitor once a day the ...

Embodiment 2

[0032] Take another chemical industrial park in northern Jiangsu as an example, which also focuses on fine chemical products. Its comprehensive takeover sewage plant adopts the process of "pretreatment + hydrolysis acidification + primary sedimentation tank + PACT + secondary sedimentation tank + flocculation sedimentation". The following steps are used to determine the OUR early warning value of this sewage plant:

[0033] (1) Monitor once a day the activated sludge in the aerobic pool of the comprehensive takeover sewage plant OUR 内源 ;

[0034] (2) Monitor once a day the environmental factors of the aerobic pool of the comprehensive takeover sewage plant: water temperature T, influent COD, ammonia nitrogen, MLSS;

[0035] (3) Steps (1) and (2) were carried out for 73 days in total, and 42 sets of data were obtained. COD and ammonia nitrogen varied irregularly within 0-500 mg / L and 0-50 mg / L, respectively. Create OUR 内源 The linear relationship with the change of environme...

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Abstract

The invention discloses a method for determining an OUR early warning value of a comprehensive connecting pipe sewage plant, and belongs to the technical field of sewage and wastewater treatment. Thepurpose of determining the OUR early warning value is achieved by continuously monitoring the relationship between the endogenous respiration rate of an aerobic pool of the sewage plant comprehensively taken over in a certain park and the change of environmental factors. The method comprises the following specific steps: (1) monitoring an activated sludge OUR[endogenous source] of an aerobic tankof a comprehensively taken-over sewage plant once a day; (2) monitoring the water temperature T, inlet water COD, ammonia nitrogen and MLSS of the aerobic tank of the comprehensively taken-over sewageplant once a day; and (3) establishing a linear relationship between the OUR[endogenous source] and the environmental factor change, and determining an OUR early warning value according to the changerule of the OUR[endogenous source] in response to the environmental factor. When the OUR of a certain stream of incoming water of the sewage plant is greater than the OUR early warning value, the wastewater can be biochemically treated; and when the OUR of a certain stream of incoming water is less than or equal to the OUR early warning value, the stream of incoming water is toxic or difficult todegrade, and the stream of incoming water enters an emergency treatment pool and takes corresponding measures. The method is suitable for comprehensive sewage plants of sewage and wastewater mixed connection pipes, and is especially suitable for comprehensive connection pipe sewage plants in chemical industrial parks.

Description

technical field [0001] The invention belongs to the technical field of sewage and wastewater treatment, and more specifically relates to a method for determining the OUR early warning value of a comprehensive takeover sewage plant. Background technique [0002] For sewage plants where sewage and wastewater are combined, especially for centralized sewage plants in chemical industry parks, the quality of incoming water has an important impact on the water quality indicators of sewage plants. The water quality of enterprise drainage changes with the change of production products. The water quality varies among three types: biochemical, refractory, and toxic. Centralized takeover sewage plants need to collect various types of wastewater, so they are more vulnerable to the impact of toxic wastewater. When the wastewater containing toxic substances enters the sewage plant, the activated sludge will be inhibited or poisoned, resulting in a decrease in its activity, which will event...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/008C02F2001/007C02F1/52C02F3/30C02F2209/21C02F2209/14
Inventor 李鹏章李爱民戴建军陈博之
Owner NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST
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