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A sludge treatment method for alkaline treatment coupled with a single-chamber microbial electrochemical system

A technology of microbial electrochemistry and sludge treatment, applied in electrochemical sludge treatment, biological sludge treatment, sludge treatment and other directions, can solve the problem of not being able to completely decompose excess sludge, increase the concentration of organic matter and improve degradation The effect of efficiency

Active Publication Date: 2022-03-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, pretreatment cannot achieve complete decomposition of the remaining sludge

Method used

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  • A sludge treatment method for alkaline treatment coupled with a single-chamber microbial electrochemical system
  • A sludge treatment method for alkaline treatment coupled with a single-chamber microbial electrochemical system
  • A sludge treatment method for alkaline treatment coupled with a single-chamber microbial electrochemical system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Sludge treatment method of alkali treatment coupling single chamber microbial electrochemical system, the specific steps are as follows:

[0025] (1) Sludge alkali treatment: The residual sludge sample of the sewage treatment plant will be introduced into the base treatment tank by the alkali treatment pool. The pH is measured by the pH meter, and the pH of the original remaining sludge The value is approximately 6.5, while the agitator is constantly stirred, NaOH (2 mol / L) is added to 12 of the alkali-treated cell acid base adjustment port to adjust the pH of the remaining sludge to 12, and the preservation is stored at room temperature for 14 hours;

[0026] (2) Construction of a single-chamber microbial battery: Take the original sludge in the soda pool of the 100 mg sewage treatment plant (containing a mature growth strain), inoculated from the strain inoculation to the single-chamber microbial battery, according to the original sodium acetate The mass volume of the s...

Embodiment 2

[0030] Sludge treatment method of alkali treatment coupling single chamber microbial electrochemical system, the specific steps are as follows:

[0031] (1) Sludge alkali treatment: The residual sludge sample of the sewage treatment plant will be introduced into the base treatment tank by the alkali treatment pool. The pH is measured by the pH meter, and the pH of the original remaining sludge The value is about 6.5, while the agitator is constantly stirred, NaOH (1.5 mol / L) is added to NaOH (1.5 mol / L) by the alkali treatment tank acid base adjusted port, and the pH of the remaining sludge is adjusted to 10, and it is allowed to preserve 15 hours at room temperature;

[0032](2) Construction of a single chamber microbial battery: Take the original sludge in the sink of the sink of the sink of the sink of the Sewage Treatment Plant, inoculated into the single-chamber microbial cell from the strain inoculation, according to the original sodium acetate. The mass volume of the so...

Embodiment 3

[0036] Sludge treatment method of alkali treatment coupling single chamber microbial electrochemical system, the specific steps are as follows:

[0037] (1) Sludge alkali treatment: The residual sludge sample of the sewage treatment plant will be introduced into the base treatment tank by the alkali treatment pool. The pH is measured by the pH meter, and the pH of the original remaining sludge The value is about 6.5, while the agitator is constantly stirred, NaOH (1 mol / L) is added to 7 by alkali treatment tank acid base adjusted port, and the pH of the remaining sludge is adjusted to 7, and the preservation is stored at room temperature for 16 hours;

[0038] (2) Construction of a single chamber microbial battery: Take the original sludge in the soda pool of the 110mg sewage treatment plant (containing a mature growth strain), inoculated into the single-chamber microbial cell from the strain, according to the original sodium acetate The mass volume of the solution is 10: 1 rati...

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Abstract

The invention discloses a method for treating excess sludge with alkali treatment coupled with a single-chamber microbial electrochemical system, including alkali treatment of sludge, construction of a single-chamber microbial battery, and construction of a coupling system; the invention uses alkali pretreatment to change the remaining The physical structure of the sludge increases the concentration of organic matter in the solution, which is conducive to the further degradation of microorganisms, and the degradation efficiency of the remaining sludge is improved through the coupling of alkali pretreatment and microbial electrochemical system.

Description

Technical field [0001] The present invention relates to a sludge treatment method of a base treatment coupling single chamber microbial electrochemical system, belonging to the field of sludge treatment. Background technique [0002] The remaining sludge is by-product of sewage treatment plant sewage treatment process. The sewage treatment plant constantly produces a large amount of residual sludge every day, and this part of the sludge has accounted for 25-60% of the operating costs of sewage treatment plants. In recent years, researchers have begun to focus on the use of microbial electrochemical systems to handle residual sludge, microbial electrochemical technology is a promising solid waste and sewage treatment technology, and the treatment of contaminants can produce renewable energy, the technology owns The removal efficiency of higher volatile suspensions, showing better application prospects in the field of sludge treatment. In addition, the microbial electrochemical sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/02C02F101/30
CPCC02F11/00C02F11/02C02F11/006C02F2101/30C02F2303/06
Inventor 潘波吴美璇张鹏
Owner KUNMING UNIV OF SCI & TECH
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