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Wastewater treatment method

A treatment method and wastewater technology, which is applied in the direction of food industry wastewater treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of inability to obtain biogas and low COD removal rate, and achieve good degradation and removal effect. Enhanced catabolic metabolism, highly effective results

Inactive Publication Date: 2021-06-29
XIAMEN HEJIAN HEALTH TECH SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that the COD removal rate is low and the biogas cannot be obtained when the organic wastewater is treated by the existing electrochemical method, and to provide a new wastewater treatment method, which can obtain a higher COD removal rate and biogas

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Examples

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Effect test

Embodiment 1

[0047] The food thawing waste water (COD is 3700mg / L) inoculated with 20wt% anaerobic sludge is introduced in the electrolytic cell from the water inlet and carried out electrolytic treatment, such as figure 1 and figure 2 As shown, the electrolytic cell includes a cell body 101 and an anode plate 102 and a cathode plate 103 that are fixed at the inner bottom of the cell body 101 and are respectively fixed on two opposite inner sidewalls of the cell body 101, the anode plate 102 and the cathode plate 103 The number of cathode plates 103 is multiple and a plurality of anode plates 102 and cathode plates 103 are arranged alternately along the water flow direction to form a baffle channel, and the anode plate 102 is a stainless steel plate ( Hematite coupling stainless steel electrode plate), the conductive layer is a composite layer formed by hematite, magnetite and activated carbon according to the mass ratio of 1.5:0.5:1. The cathode plate 103 is a stainless steel plate. Th...

Embodiment 2

[0055] The food thawing waste water (COD is 3800mg / L) inoculated with 20wt% anaerobic sludge is introduced in the electrolytic cell from the water inlet and carried out electrolytic treatment, such as figure 1 and figure 2 As shown, the electrolytic cell includes a cell body 101 and an anode plate 102 and a cathode plate 103 that are fixed at the inner bottom of the cell body 101 and are respectively fixed on two opposite inner sidewalls of the cell body 101, the anode plate 102 and the cathode plate 103 The number of cathode plates 103 is multiple and a plurality of anode plates 102 and cathode plates 103 are arranged alternately along the water flow direction to form a baffle channel. The anode plate 102 is a stainless steel plate with a thickness of 10 μm conductive layer on the surface, The conductive layer is a composite layer formed of hematite, magnetite and activated carbon in a mass ratio of 3:2:1. The electrolytic cell has a hollow structure that penetrates up and ...

Embodiment 3

[0057] The food thawing waste water (COD is 3750mg / L) inoculated with 20wt% anaerobic sludge is introduced in the electrolytic cell from the water inlet and carried out electrolytic treatment, such as figure 1 and figure 2 As shown, the electrolytic cell includes a cell body 101 and an anode plate 102 and a cathode plate 103 that are fixed at the inner bottom of the cell body 101 and are respectively fixed on two opposite inner sidewalls of the cell body 101, the anode plate 102 and the cathode plate 103 The number of cathode plates 103 is multiple and a plurality of anode plates 102 and cathode plates 103 are arranged alternately along the water flow direction to form a baffle channel. The anode plate 102 is a stainless steel plate with a thickness of 7 μm conductive layer on the surface, The conductive layer is a composite layer formed of hematite, magnetite and activated carbon in a mass ratio of 2:1:1. The electrolytic cell has a hollow structure that penetrates up and d...

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Abstract

The invention belongs to the field of wastewater treatment, and relates to a wastewater treatment method, which comprises the following steps: organic wastewater is introduced from a water inlet into an electrolytic bath for electrolytic treatment, the electrolytic bath comprises a bath body, and anode plates and cathode plates which are positioned at the inner bottom of the bath body and are respectively and fixedly arranged on two opposite inner side walls in the bath body. The multiple anode plates and the multiple cathode plates are alternately arranged in the water flow direction to form a baffling channel, the anode plates are stainless steel plates with conducting layers on the surfaces, and the conducting layers are composite layers formed by hematite, magnetite and activated carbon. According to the invention, a conducting medium is coupled to the stainless steel surface by adopting the electrolytic bath to form the anode plates, and a baffling design is adopted, so that interspecific extracellular electron transfer of microorganisms can be mediated in an anaerobic environment, the degradation metabolism of the microorganisms to organic matter in wastewater is enhanced, the operation is stable, and the COD removal rate can reach 87% or above.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a waste water treatment method. Background technique [0002] Organic wastewater refers to wastewater mainly composed of organic pollutants. Organic wastewater is likely to cause eutrophication of water bodies and is relatively harmful. Therefore, it needs to be treated to degrade the organic pollutants in it. Wastewater treatment methods can be divided into chemical methods, physicochemical methods, biological methods and electrochemical methods according to their functions. Among them, the electrochemical method is a process of degrading organic pollutants in wastewater through an electrochemical reaction using an external electric field, and this process is usually carried out in an electrolytic cell. For example, CN211733940U discloses a three-dimensional electrode electrochemical oxidation treatment device, comprising an interconnected ozone oxidation chambe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/461C02F3/28C02F101/30C02F103/32
CPCC02F9/00C02F3/28C02F2103/32C02F2001/46138C02F2101/30
Inventor 陈志坤苏升柯巍峰黄丹石椿丽
Owner XIAMEN HEJIAN HEALTH TECH SERVICE
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