An in-situ control municipal sewage pipeline sulfur conversion system and its operation method

A technology for municipal sewage and pipelines, applied in chemical instruments and methods, water/sewage treatment, biological water/sewage treatment, etc., to achieve the effects of improving the reduction reaction rate, low cost, and increasing current density

Active Publication Date: 2020-12-08
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the existing dosing of "flowing" electron acceptors, it is difficult to generate S 2- The purpose of this invention is to provide an in-situ regulation of municipal sewage pipeline sulfur conversion system and its operation method. The system has simple structure, good sulfur conversion effect and no pollution to the environment.

Method used

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  • An in-situ control municipal sewage pipeline sulfur conversion system and its operation method
  • An in-situ control municipal sewage pipeline sulfur conversion system and its operation method
  • An in-situ control municipal sewage pipeline sulfur conversion system and its operation method

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Embodiment 1

[0029] An in-situ control system for sulfur conversion of municipal sewage pipelines, comprising sewage manhole covers of municipal sewage pipelines, a microbial electrochemical system and a lift system, the upper end of the lift system is fixed on the sewage well cover 1, and the lower end is connected to the microbial electrochemical system. The lifting frame system includes an upper bracket 2, a telescopic module, a lower bracket 4, and a fixture 5. The telescopic module is fixed on the sewage well cover 1 through the fixture 5. The upper bracket 2 and the lower bracket 4 form an X shape, and the upper bracket 2 The upper ends of the lower bracket 4 are respectively fixed on both sides of the telescopic module, and the telescopic module shrinks to change the size of the X-shaped angle to complete the telescopic purpose and realize the change of the position of the microbial electrochemical system. The lower end of the upper support 2 is fixed on the lower support 4, and the ...

Embodiment 2

[0037] The above-mentioned operation method for in-situ regulation and control of the sulfur conversion system of the municipal sewage pipeline comprises the following steps: installing a sewage manhole cover, a lift system and a microbial electrochemical system, and the SO in the municipal sewage pipeline 4 2- Sewage is reduced to S by sulfate-reducing bacteria 3 in the sludge at the bottom of the pipeline 2- , and then oxidized to S 0 , while generating S 0 The anode is rapidly separated from the anode by hydraulic scouring; the cathode in the cathode group 7 placed at the junction of the sewage surface and the air receives electrons from the anode to reduce oxygen to water. During operation, maintenance and repairs are carried out for the microbial electrochemical system through the lift system. The invention samples the sewage in the system to monitor the concentration change of the sulfur conversion product and samples the gas above the sewage manhole cover 1 to measur...

Embodiment 3

[0039] Usually SO in sewage 4 2- The concentration fluctuation range is 20-200 mg / L. In order to investigate the value of the angle formed by the anode group and the pipeline, the sulfur conversion effect of the sewage pipeline is the best. 4 2- A set of control cases was made when the concentration was 150±5mg / L (that is, the angle between the anode group and the pipeline was 0°, 30°, 45°, 60°, and 90°). Except that the angle between the anode group and the pipeline was different, the rest The implementation steps and implementation content are the same as above.

[0040] From Figure 5 see that in SO 4 2- When the concentration is 150±5mg / L, when the anode group and the pipeline are at 0°, 30°, 45°, 60°, 90°, the S in the sulfur conversion product 0 The proportions in the sulfur form reached 67%, 70%, 83%, 68%, 60%, respectively, S 2- The proportions are 19%, 8%, 4%, 9%, and 14%. It can be seen that the setting of the anode group and the pipeline at 45° is more conduc...

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Abstract

The invention relates to a sulfur conversion system regulated and controlled in situ for a municipal sewage pipeline and a running method of the sulfur conversion system. The system comprises a sewage well lid of the municipal sewage pipeline, a microbial electrochemical system and a lifting rack system, wherein the upper end of the lifting rack system is fixed on the sewage well lid while the lower end of the lifting rack system is connected to the microbial electrochemical system; the lifting rack system comprises an upper support, a retractable module, a lower support and a fixing object; the retractable module is fixed on the sewage well lid through the fixing object; the upper support and the lower support form an X; the upper end of the upper support and the upper end of the lower support are separately fixed on two sides of the retractable module; the lower end of the upper support is fixed on the lower support; the lower end of the lower support is connected with the microbial electrochemical system; the electrochemical system comprises a cathode group, an anode group, a wire and a retractable sleeve; the cathode group is connected with the anode group by the wire with the retractable sleeve in a sleeving manner; the retractable sleeve is connected with the lower end of the lower support; and the anode group is positioned at the bottom of the sewage pipeline. The system is simple in structure, good in sulfur conversion effect and pollution-free to the environment.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an in-situ regulating municipal sewage pipeline sulfur conversion system and an operating method thereof. Background technique [0002] Corrosion of municipal sewage pipes brings economic losses of up to billions of dollars to the world every year, of which hydrogen sulfide (H 2 S) Corrosion caused by release has become one of the most important causes of "short life" of sewage pipes. At the same time, the sewer pipe H 2 Poisoning incidents caused by the release of S are not uncommon, which poses a great threat to the life and health of municipal drainage facility maintenance workers. With the acceleration of urbanization in my country, the total length of the municipal drainage pipe network (rainwater and sewage pipes) reached 510,000 kilometers during the "Twelfth Five-Year Plan" period. , therefore, the study of municipal sewage pipeline H 2 S control m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F101/10
CPCC02F3/005C02F2101/101C02F2201/46105C02F2203/006
Inventor 远野卞爱琴丁成王爱杰陈天明李朝霞
Owner YANCHENG INST OF TECH
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