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Bioelectrochemical coupling system for purifying drinking water and purification method thereof

A bioelectrochemical and drinking water technology, applied in chemical instruments and methods, electrochemical-biological combined treatment, water pollutants, etc., can solve the problems of high energy consumption, high chemical process cost, frequent replacement of filter elements, etc.

Pending Publication Date: 2018-05-08
傲自然成都生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the present situation of trace organic pollutants, disinfection by-products, nitrate and residual chlorine contained in drinking water of household and other water supply terminals, conventional physical and chemical processes with high cost, high energy consumption and frequent replacement of filter elements

Method used

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  • Bioelectrochemical coupling system for purifying drinking water and purification method thereof
  • Bioelectrochemical coupling system for purifying drinking water and purification method thereof
  • Bioelectrochemical coupling system for purifying drinking water and purification method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example 1: Construction of Bioelectrochemical Coupling System

[0084] as attached figure 1 As shown, the first-stage bioelectrochemical system 1 of this embodiment uses polypropylene (PP) as a cylindrical water purifier housing (diameter 130mm, length 600mm), wherein the anode one 3 is located inside the housing, and the anode one 3 The outer side wraps the diaphragm 4 and the cathode 1 in turn. The anode one 3 is constructed of one or more layers of graphite felt, the thickness of the graphite felt is 2-10mm, the interval between each layer of graphite felt is 2-10mm, the stainless steel mesh is used as the cathode one 5, and the diaphragm one 4 is made of non-woven fabric. The water inlet-23 and the purified water inlet-24 of the first-stage bioelectrochemical system 1 are all located at the top of the housing, and the water inlet-23 end includes a water inlet solenoid valve 20, a water flow switch 22, and a flow control switch 21. A backwash drain 27 and a backwas...

Embodiment 2

[0088] Embodiment 2 Bioelectrochemical coupling system purifies domestic drinking water

[0089] Using the bioelectrochemical coupling system constructed in Example 1, prepare 2.5 L of electrolyte solution (2% NaCl), inject it into the anode chamber of the second-stage bioelectrochemical system, and seal the anode chamber. The household drinking water is connected to the bioelectrochemical coupling system through the pipeline, and the DC power supply of the first-stage bioelectrochemical system is controlled by an automatic controller—the external voltage is 1.0V, and the battery circuit of the second-stage bioelectrochemical system is connected at the same time. During the operation of the system, the DC power supply 2 is controlled by the automatic controller to regulate the cathode potential of the second-stage bioelectrochemical system to reach the range of 0—-400mV (vs Ag / AgCl), and the drinking water of the system is controlled by the flow control switch The residence ti...

Embodiment 3

[0094] Example 3: Real-time water quality detection and analysis of bioelectrochemical coupling system

[0095]With the bioelectrochemical coupling system of Example 1 in the drinking water purification process, after closing the circulating pump for 12 hours, the current data of the DC power supply was collected in real time by the data collector (see the attached image 3 ), through conversion with the CODmn of the influent and effluent water, the influent CODmn is 3.0-4.5mg / L, and the effluent CODmn is 0.5-0.7mg / L.

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Abstract

The invention relates to a bioelectrochemical coupling system for purifying drinking water and a purification method thereof. The system is characterized by including a first-level bioelectrochemicalsystem (1), a second-level bioelectrochemical system (2), a positive electrode 1 (3), a diaphragm 1 (4), a negative electrode 1 (5), a built-in water flow guide barrel (6), a positive electrode 2 (7),a diaphragm 2 (8), a negative electrode 2 (9), a direct-current power supply 1 (10), a direct-current power supply 2 (11), an automatic controller (12), a reference electrode (13), a circulating pump(14), a load (15), a positive electrode chamber sealing cover (16), a high-voltage switch (17), a ultrafiltration membrane column (18), a pressure water storage tank (19), a water inlet solenoid valve (20), a flow control switch (21), a water flow switch (22), a water inlet 1 (23), a purified water outlet 1 (24), a water inlet 2 (25), a purified water outlet 2 (26), a backflush water drain port (27), a backflush valve (28), a positive electrode chamber flushing port (29) and a positive electrode chamber flushing valve (30). The system and the method are mainly applied to purification of the household drinking water, especially for purification of the drinking water with high concentration of nitrate and disinfection by-products.

Description

technical field [0001] The invention relates to the field of water purification, in particular to the field of drinking water purification, in particular to a bioelectrochemical coupling system and a purification method for purifying drinking water. Background technique [0002] After more than 30 years of rapid economic development in China, the excessive consumption of resources and energy has led to a large amount of pollutants entering the natural environment. Among them, soluble organic and inorganic pollutants and heavy metal ions enter surface water bodies and groundwater systems in large quantities. Due to the lack of sufficient electron donors in the water body, most of the ammonia nitrogen exists in the water body in the form of nitrate after biological nitrification, especially the nitrate in the groundwater accumulates significantly. In addition, many aromatic or substituent-containing aromatic pollutants (POPs) and heavy metal ions that are difficult to degrade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F1/461C02F1/44C02F101/16
CPCC02F1/44C02F1/444C02F1/46109C02F3/005C02F2101/163
Inventor 李冬顺艺
Owner 傲自然成都生物科技有限公司
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