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Advanced treatment method of sewage

A technology of advanced treatment and sewage, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of harsh operating conditions, many procedures, and complicated operation.

Active Publication Date: 2011-04-13
TIANJIN BISHUIYUAN MEMBRANE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the device is used, there are many processes, cumbersome operation, harsh operating conditions, and high processing costs, and there are still many areas worthy of improvement.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] According to attached figure 1 The process flow of wastewater treatment described in the invention is carried out.

[0094] The first paragraph: In the first group of electrolytic cells 1, the iron plate is used as the anode, and the stainless steel is used as the cathode. The two electrodes are placed in parallel, the distance between the anode and the cathode is 5mm, the middle layer is nylon cloth with a thickness of 0.1mm, and the DC current density is 1A. / m 2 , the influent flow rate is 3L / h, and the residence time is 10 minutes.

[0095] The second paragraph: in the second group of electrolytic cells 2, the iron plate is used as the anode, and the titanium-palladium sold by Baoji Fuxin Nonferrous Metal Products Co., Ltd. under the trade name palladium-plated nickel plate is the cathode, and the distance between the anode and the cathode is 5mm. The DC current density is 10A / m 2 , the influent flow rate is 1L / h, and the residence time is 20 minutes.

[0096] ...

Embodiment 2

[0102] This embodiment does not initiate the second stage of electrochemical degradation process.

[0103] The first paragraph: In the first group of electrolytic cells 1, the iron plate is used as the anode, the graphite is used as the cathode, the two electrodes are placed in parallel, the middle layer is 0.2mm thick cotton cloth, the distance between the anode and the cathode is 5mm, and the DC current density is 1A / m 2 , the influent flow rate is 3L / h, and the residence time is 10 minutes.

[0104] The second stage: In the second group of electrolytic cells 2, the DC current density is 0A / m 2 , that is, the electrochemical degradation process in this section is not activated, and this section is only equivalent to a pipeline.

[0105] The third section: In the third group of electrolytic cells 3, the cathode and anode are both graphite, the middle layer is 0.2mm thick nylon cloth, the distance between the anode and the cathode is 5mm, and the DC current density is 1A / m ...

Embodiment 3

[0110] In this embodiment, the third secondary separation process is not started.

[0111] The first paragraph: In the first group of electrolytic cells 1, the iron plate is used as the anode, and the nickel mesh is used as the cathode. m 2 , the influent flow rate is 3L / h, and the residence time is 10 minutes.

[0112] The second stage: In the second group of electrolytic cells 2, the iron plate is used as the anode, the titanium-palladium is used as the cathode, the distance between the anode and the cathode is 5mm, and the DC current density is 10A / m 2 , the influent flow rate is 1L / h, and the residence time is 20 minutes; the water after treatment in these two stages is collected and combined as the effluent. The influent is the effluent from the secondary settling tank of a certain sewage treatment plant, and the action time of the whole system is 30 minutes. The analysis results of the water quality indicators of the influent and effluent are shown in Table 3.

[011...

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Abstract

The invention relates to an advanced treatment method of sewage. In the method, various pollutants in the water to be treated are removed in an advanced manner through low-voltage electrochemical separation process and higher-voltage electrochemical degradation process, and meanwhile, the method can farthest save the economic cost generally by over 20%. The method has the characteristics of strong industrial applicability, high treatment capability, obvious purification effect, high electrochemical efficiency, capability of ensuring the treated common urban domestic sewage to achieve class 2 water quality specified by the nation, capability of ensuring the treated chemical industrial sewage to achieve class 3 water quality specified by the nation, low materials consumption, recyclability, long service period, no secondary pollution and the like, and is convenient in process operation.

Description

【Technical field】 [0001] The invention belongs to the technical field of wastewater treatment. More specifically, the present invention relates to a method for advanced treatment of sewage. 【Background technique】 [0002] At present, the increasingly severe water pollution and water resource shortages seriously restrict the development of my country's economy and society. It has gradually become a global consensus to regard urban sewage as the "second water source" of the city, and how to realize the deep purification of sewage is the key link for urban sewage to become the "second water source". Among them, in the process of deep purification of sewage, anions such as nitrogen, phosphorus, fluorine, chlorine and organic matter are difficult pollutants in water treatment. [0003] For the removal of nitrogen, phosphorus and organic matter in sewage, the widely used treatment technologies are mainly biological methods and chemical precipitation methods; for anions such as f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/461
Inventor 陈亦力文剑平李天玉关晶万平玉
Owner TIANJIN BISHUIYUAN MEMBRANE MATERIAL CO LTD
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