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Cooperative treatment device for high-concentration nitrate waste liquid and organic waste liquid and two-phase treatment method thereof

A technology of organic waste liquid and collaborative treatment, which is applied in water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve the problems of reducing treatment cost, difficulty in nitrogen removal, high treatment cost, etc., and achieve reduced operation Power, solve the carbon source shortage, and save the effect of carbon source dosing

Active Publication Date: 2021-03-02
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a high-concentration nitrate waste liquid and organic waste liquid synergistic treatment device and a two-phase treatment method thereof, which successfully solves the difficulty in removing nitrogen from high-concentration nitrate waste liquid under the high-salt system of biological denitrification treatment, which brings By-products, high treatment costs and other issues, the carbon source required for the biological denitrification process is supplemented by organic waste liquid to greatly reduce the treatment cost, and the denitrification is carried out by using salt-tolerant and high-load anaerobic denitrification sludge, and the two-phase anaerobic process is used to achieve Co-processing of organic waste liquid and nitrate waste liquid is widely used in the treatment of high-concentration nitrate waste liquid and organic waste liquid under the conditions of high salinity, high toxicity and high load

Method used

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  • Cooperative treatment device for high-concentration nitrate waste liquid and organic waste liquid and two-phase treatment method thereof
  • Cooperative treatment device for high-concentration nitrate waste liquid and organic waste liquid and two-phase treatment method thereof
  • Cooperative treatment device for high-concentration nitrate waste liquid and organic waste liquid and two-phase treatment method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Example 1 A high-concentration nitrate waste liquid and organic waste liquid co-processing device

[0056] Refer to attached figure 1 , a device for co-processing high-concentration nitrate waste liquid and organic waste liquid, the organic waste liquid tank 1 is connected to the liquid inlet end of the anaerobic acidification reactor 3 through the first water inlet pump 2, and the anaerobic acidification reactor 3 The first return line 4 is arranged on the first return line 4, and the first return pump 5 is arranged on the first return line 4. The liquid outlet end of the anaerobic acidification reactor 3 is connected with the waste liquid mixing tank 7 through the pipeline, and the waste liquid mixing tank 7. The second water inlet pump 8 is connected to the liquid inlet end of the anaerobic denitrification reactor 9. The anaerobic denitrification reactor 9 is provided with a second return pipeline 10 and a mud-water separation bag 15 on the outside, and a third retur...

Embodiment 2

[0059] Example 2 A high-concentration nitrate waste liquid and organic waste liquid co-processing device

[0060] Refer to attached figure 2 , a device for co-processing high-concentration nitrate waste liquid and organic waste liquid, the organic waste liquid tank 1 is connected to the liquid inlet end of the anaerobic acidification reactor 3 through the first water inlet pump 2, and the anaerobic acidification reactor 3 The first return line 4 is arranged on the first return line 4, and the first return pump 5 is arranged on the first return line 4. The liquid outlet end of the anaerobic acidification reactor 3 is connected with the waste liquid mixing tank 7 through the pipeline, and the waste liquid mixing tank 7. The second water inlet pump 8 is connected to the liquid inlet end of the anaerobic denitrification reactor 9. The anaerobic denitrification reactor 9 is provided with a second return pipeline 10 on the outside, a mud-water separation bag 15 on the top of the ou...

Embodiment 3

[0069] Embodiment 3 A method for co-processing high-concentration nitrate waste liquid and organic waste liquid

[0070] Utilize the device described in embodiment 1 to carry out high-concentration nitrate waste liquid and organic waste liquid co-processing, the treatment method steps are as follows:

[0071] 1) The organic waste liquid in the organic waste liquid tank 1 enters the anaerobic acidification reactor 3 through the water inlet pump. Fully mixed and reacted with the sludge under the action of a reflux pump 5 to obtain acidification treatment waste liquid;

[0072] 2) Add the acidification treatment waste liquid and nitrate waste liquid obtained in the step 1) into the waste liquid mixing tank 7, and after the water quality is adjusted, a mixed liquid is obtained, and the mixed liquid enters the anaerobic liquid through the second water inlet pump 8 The mixed reaction is carried out in the denitrification reactor 9, the anaerobic denitrification reactor 9 contains s...

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Abstract

The invention discloses a high-concentration nitrate waste liquid and organic waste liquid co-processing device and a two-phase processing method thereof, belonging to the technical field of waste liquid treatment. The device mainly includes an organic waste liquid tank, an anaerobic acidification reactor, a waste liquid Mixing tank, anaerobic denitrification reactor; the outlet end of the anaerobic acidification reactor is connected to the waste liquid mixing tank through a pipeline, and the waste liquid mixing tank is connected to the anaerobic denitrification reactor through the second water inlet pump The liquid inlet end is connected, and the anaerobic denitrification reactor is provided with a third return line, a mud-water separation bag, etc., one end of the third return line is connected with the bottom of the mud-water separation bag, and the anaerobic denitrification reactor The interior of the set is a two-stage three-phase separator. The invention adopts the two-phase anaerobic treatment technology to solve the problem that high-salt and high-concentration nitrate wastewater cannot be denitrified by biological methods in practical applications. Treat waste and save carbon sources.

Description

technical field [0001] The invention belongs to the technical field of waste liquid treatment, and in particular relates to a co-processing device for high-concentration nitrate waste liquid and organic waste liquid and a two-phase processing method thereof. Background technique [0002] In the production process of many industries in my country, dangerous waste liquids with extremely high content of nitrates, heavy metals or toxic organic substances are produced, and most of the waste liquids show water quality characteristics such as strong acid / alkali, high salt, and complex pollutant components, making it extremely difficult to treat . The "National List of Hazardous Wastes" includes 49 categories of hazardous wastes from 44 industries, a total of 498 types, including 157 types of waste liquid. According to incomplete statistics, my country produces 20 million tons of hazardous liquid waste every year, mainly involving industries such as smelting, electroplating, electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/30
CPCC02F1/00C02F3/286C02F2101/163C02F2101/30
Inventor 刘锐平苗时雨胡承志柏耀辉罗劲娜什米·贡居曲久辉
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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