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An electrochemical device and method for water treatment

A technology of electrochemistry and water treatment, applied in the field of electrochemistry, can solve problems affecting the effect of electrocatalytic oxidation, achieve the effects of reducing power operating costs, preventing electrode passivation, and enhancing effects

Active Publication Date: 2016-08-10
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrocatalytic oxidation method is more effective in the treatment of organic matter, but the presence of suspended solids and impurity ions in the system will affect the effect of electrocatalytic oxidation
[0006] The use of a double pulse power supply system and the combined use of electrocoagulation and electrocatalytic oxidation have not been reported yet

Method used

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  • An electrochemical device and method for water treatment
  • An electrochemical device and method for water treatment

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Effect test

Embodiment 1

[0036] Embodiment 1: as figure 1 , figure 2 As shown, an electrochemical device for water treatment, the top of one side of the box is connected to the water outlet 1, the bottom of one side of the box is connected to the air inlet 3, and the bottom of the other side of the box is connected to the water inlet 2. One side of the electrocatalytic oxidation cathode 5 is connected to the electrocatalytic oxidation anode 4, and the other side of the electrocatalytic oxidation anode 4 is connected to the second electrocatalytic oxidation cathode 6; the first electroflocculation cathode 8 is connected to the other side of the box, and the second One side of an electrocoagulation cathode 8 is connected to an electrocoagulation anode 7 , and the other side of the electrocoagulation anode 7 is connected to a second electrocoagulation cathode 9 .

[0037] An electrochemical method for water treatment, comprising the following steps;

[0038] Select the combination of electrocoagulatio...

Embodiment 2

[0044] Embodiment 2: as figure 1 , figure 2 As shown, an electrochemical device for water treatment, the device is an open structure, the flow chart of the device is as follows figure 1 shown. Including dual pulse power supply system, electric control system, electrochemical reaction device, aeration device, separation device. Intermittent static processing and continuous dynamic processing can be realized.

[0045] The system uses a pulse power supply and has the function of positive and negative electrode cycle exchange, which can reduce power consumption, reduce power operating costs, and effectively prevent electrode passivation. Different power supply modes can be realized according to requirements: electrocoagulation power supply mode, electrocatalytic oxidation power supply mode, and joint power supply mode.

[0046] The electronic control system realizes the opening and switching of the power supply, inlet and outlet pumps, aeration pumps, etc. in the device, so a...

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Abstract

The invention relates to an electrochemistry apparatus for water treatment and a method, and belongs to the technical field of electrochemistry. According to the electrochemistry apparatus, a dual pulse power supply electricity supply device is connected with an electronic control device, an aeration device and the electronic control device are connected to an electrochemical reaction device, the electrochemical reaction device is connected with a separation device, a water outlet is connected above one side of the box of the electrochemical reaction device, a gas inlet is connected below one side of the box, a water inlet is connected below the other side of the box, one side of a first electrocatalysis oxidation cathode is connected to an electrocatalysis oxidation anode, the other side of the electrocatalysis oxidation anode is connected with a second electrocatalysis oxidation cathode, a first electroflocculation cathode is connected to the other side of the box, one side of the first electroflocculation cathode is connected with an electroflocculation anode, and the other side of the electroflocculation anode is connected with a second electroflocculation cathode. With the apparatus and the method in the present invention, the intermittent static treatment and the continuous dynamic treatment on the sewage can be achieved, the electric energy consumption can be reduced, the electricity running cost can be reduced, the electrode passivation can be effectively prevented, and the water treatment effect can be enhanced.

Description

technical field [0001] The invention relates to an electrochemical device and method for water treatment, belonging to the technical field of electrochemistry. Background technique [0002] Shale gas fracturing flowback fluid, oil and gas field sewage, and petrochemical sewage have complex components and high levels of toxic substances, all of which require certain treatments before they can be discharged or reused. [0003] Among the many sewage treatment methods, electrochemical technology has gradually been popularized and applied in the field of water treatment due to its small footprint, intelligent operation, and low secondary pollution. Among them, electrocoagulation and electrocatalytic oxidation are more commonly used electrochemical treatment methods. [0004] Electrocoagulation removes pollutants through the sedimentation of flocs produced by the dissolution of the anode, the air flotation of tiny bubbles produced by the cathode, and the redox of new ecological o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/463C02F1/467
CPCC02F1/463C02F1/4672C02F1/78C02F2201/4616C02F2201/4619C02F2201/78C02F2201/782C02F2201/784
Inventor 杜琳郭小春江丽向启贵刘春艳郭世月王兴睿易畅陆林峰徐炳科
Owner PETROCHINA CO LTD
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