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Electrochemical-AAO (Anodic Aluminum Oxide) device for reducing sludge amount in sewage treatment and treatment method thereof

A sewage treatment and electrochemical technology, applied in electrochemical sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of difficult dehydration, poor in-situ sludge reduction effect, etc. Achieve the effect of improving current conduction efficiency, improving sludge disintegration and reduction effect, and improving biodegradability

Pending Publication Date: 2018-03-02
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides an electrochemical-AAO device for reducing the amount of sludge in sewage treatment and its treatment method

Method used

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  • Electrochemical-AAO (Anodic Aluminum Oxide) device for reducing sludge amount in sewage treatment and treatment method thereof
  • Electrochemical-AAO (Anodic Aluminum Oxide) device for reducing sludge amount in sewage treatment and treatment method thereof

Examples

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Embodiment 1

[0034] In this embodiment, the electrochemical-AAO device for reducing the amount of sludge in sewage treatment includes a storage tank, a sludge inlet, a main AAO device, a stirring device, an electric device, a sedimentation tank, and a sludge supernatant outlet. The main AAO device includes Anaerobic pool 5, anoxic pool 7 and aerobic pool 9, aerobic pool 9 is provided with porous electrode plate 10 to form electrochemical unit parallel to the water flow direction both sides, movable electrode plate 10 comprises anode plate, cathode plate and power supply, The anode plate material is a titanium-based ruthenium-iridium coated electrode, the cathode plate material is a pure titanium electrode, a plurality of holes are arranged on the anode plate and the cathode plate, and the electrode plate is fixed by the electrode plate groove 12, which can be moved along the electrode plate groove 12 to move, the distance between the two electrode plates 10 can be adjusted; The water stora...

Embodiment 2

[0036]In this embodiment, the electrochemical-AAO device for reducing the amount of sludge in sewage treatment includes a storage tank, a sludge inlet, a main AAO device, a stirring device, an electric device, a sedimentation tank, and a sludge supernatant outlet. The main AAO device includes Anaerobic pool 5, anoxic pool 7 and aerobic pool 9, aerobic pool 9 is provided with porous electrode plate 10 to form electrochemical unit parallel to the water flow direction both sides, movable electrode plate 10 comprises anode plate, cathode plate and power supply, The anode plate material is a titanium-based ruthenium-iridium coated electrode, the cathode plate material is a pure titanium electrode, a plurality of holes are arranged on the anode plate and the cathode plate, and the electrode plate is fixed by the electrode plate groove 12, which can be moved along the electrode plate groove 12 to move, the distance between the two electrode plates 10 can be adjusted; The water storag...

Embodiment 3

[0038] In this embodiment, the electrochemical-AAO device for reducing the amount of sludge in sewage treatment includes a storage tank, a sludge inlet, a main AAO device, a stirring device, an electric device, a sedimentation tank, and a sludge supernatant outlet. The main AAO device includes Anaerobic pool 5, anoxic pool 7 and aerobic pool 9, aerobic pool 9 is provided with porous electrode plate 10 to form electrochemical unit parallel to the water flow direction both sides, movable electrode plate 10 comprises anode plate, cathode plate and power supply, The anode plate material is a titanium-based ruthenium-iridium coated electrode, the cathode plate material is a pure titanium electrode, a plurality of holes are arranged on the anode plate and the cathode plate, and the electrode plate is fixed by the electrode plate groove 12, which can be moved along the electrode plate groove 12 to move, the distance between the two electrode plates 10 can be adjusted; The water stora...

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Abstract

The invention belongs to the technical field of environment protection and in particular relates to an electrochemical-AAO (Anodic Aluminum Oxide) device for reducing sludge amount in sewage treatmentand a treatment method thereof. The device comprises a water storage tank, a sludge inlet, a main body AAO device, a magnetic stirring device, an electric device, a sludge sedimentation tank and a sludge supernatant outlet, wherein porous electrode plates are arranged at two sides, parallel to the water flow direction, of an aerobic tank to form an electrochemical unit and the electrochemical unit can move along a groove of the electrode plate. Sewage enters an anaerobic tank from the water storage tank and then enters an anoxic tank to carry out a phosphorus release and denitrification process of polyphosphate accumulating bacteria. Sludge subjected to electric treatment is used for promoting the recessive growth of the sludge or reaches a lysis effect, so that the sludge is reduced. Thesewage of the aerobic tank enters the sedimentation tank through a pipeline and then is subjected to sludge sedimentation; then the sludge is reflowed into the anaerobic tank; after electrochemical treatment, the biodegradability of the reflowed sludge is improved; a carbon source needed by biochemical reaction of the anaerobic tank is supplemented, so that the biochemical efficiency is improvedand the sewage treatment effect is further improved; supernatant is discharged from an outlet.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an electrochemical-AAO device for reducing the amount of sludge in sewage treatment and a treatment method thereof. Background technique [0002] As of 2016, my country produces 30-40 million tons of municipal sludge (with a moisture content of 80%) every year. It is estimated that by 2020, my country's municipal sludge output will reach 60-90 million tons. Dewatered sludge that has not been stabilized is highly toxic to the environment and threatens human health and the ecological environment. [0003] At present, my country's sludge disposal methods include landfill, composting, natural drying and incineration. However, the sludge contains a large amount of water that is difficult to remove, which makes it difficult to treat and dispose of the sludge. A large amount of sludge not only occupies and pollutes a large area of ​​land, but also is diff...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/02
CPCC02F11/006C02F11/02C02F2303/06
Inventor 黄殿男李琳傅金祥郜玉楠李微
Owner SHENYANG JIANZHU UNIVERSITY
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