Multistage electrochemical water treatment system and method

A water treatment system, electrochemical technology, applied in multi-stage water treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of reduced treatment efficiency, complex components, high COD, etc., to achieve COD reduction and desalination The effect of high rate and high processing efficiency

Pending Publication Date: 2019-07-26
HUANENG CLEAN ENERGY RES INST
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Problems solved by technology

However, due to the characteristics of high hardness, high alkalinity, high COD and complex composition of circulating water and sewage, as the treatment process progresses, the load gradually increases and the number of regenerations increases, which makes the treatment efficiency continue to decrease

Method used

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  • Multistage electrochemical water treatment system and method

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Embodiment Construction

[0025] The present invention is described in further detail below in conjunction with accompanying drawing:

[0026] refer to figure 1 , the multi-stage electrochemical water treatment system of the present invention includes a primary electrochemical treatment module 1, a secondary electrochemical treatment module 2, a water inlet tank 3, a first working pump 4, a filter 5, and a first intermediate water tank 6 , the second working pump 7, the first regeneration pump 9, the second regeneration pump 8, the concentrated water tank 11, the produced water tank 12 and the second intermediate water tank 10, the secondary electrochemical treatment module 2 includes the first electrosorption module and the second electrosorption module Adsorption module, wherein, the water outlet of the first electrosorption module and the water outlet of the second electrosorption module are equipped with a salinity detector; the outlet of the water inlet tank 3 is sequentially passed through the fi...

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Abstract

The invention discloses a multistage electrochemical water treatment system and method. The system comprises a first-stage electrochemical treatment module, a second-stage electrochemical treatment module, a water incoming tank, a first working pump, a filter, a first middle water tank, a second working pump, a first regeneration pump, a second regeneration pump, a concentrated water tank, a waterproducing tank and a second middle water tank, the second-stage electrochemical treatment module comprises a first electrosorption module and a second electrosorption module, and a salinity detectoris arranged at a water outlet of each of the first electrosorption module and the second electrosorption module. The system and method is high in treatment efficiency.

Description

technical field [0001] The invention belongs to the technical field of electrochemical water treatment, and relates to a multistage electrochemical water treatment system and method. Background technique [0002] The power generation industry is one of the industries that consume a large amount of water in my country. The water consumption of power plants accounts for about 20% of the total industrial water consumption, and its circulating cooling water system consumes 60% to 80% of the water. Treatment and reuse is the key to realizing thermal power plants. The key to zero wastewater discharge. Under the condition of high concentration ratio of circulating water, the salinity, COD, SiO 2 , hardness, alkalinity and other indicators are high, and contains a large number of water quality stabilizers, increasing the difficulty of circulating water sewage treatment. At present, reverse osmosis desalination technology is mostly used in the reuse of circulating water. In the actu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/469
CPCC02F1/469C02F2301/08C02F2303/14
Inventor 王广任志博张畅余智勇
Owner HUANENG CLEAN ENERGY RES INST
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