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Method for deep treatment of bromine ion-containing drinking water

A technology for advanced treatment and drinking water, applied in the field of water treatment, can solve the problems of ineffective removal of disinfection by-products and excessive bromic acid by-products, and achieve the effects of enhancing coagulation-assisting effect, low cost, and broad application prospects.

Active Publication Date: 2006-07-26
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the existing technology cannot effectively remove the disinfection by-products and bromic acid by-products exceeding the standard when performing water treatment, so as to provide a kind of ozone oxidation process as the core technology, which can deeply treat drinking water through an integrated process. Treatment, effectively reduce the precursors of disinfection by-products, remove organic pollution in water bodies, and at the same time, control the formation of bromate by-products in bromine-containing raw water to less than 10 μg / L during the treatment process, so that drinking water effluent can meet WHO safe drinking water standards An economical and practical method for the advanced treatment of drinking water containing bromide ions

Method used

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  • Method for deep treatment of bromine ion-containing drinking water
  • Method for deep treatment of bromine ion-containing drinking water
  • Method for deep treatment of bromine ion-containing drinking water

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Experimental program
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Effect test

Embodiment 1

[0020] This embodiment adopts the raw water of a reservoir in Shenzhen City, Guangdong Province in the south of my country. The raw water is listed in Table 1 and has the characteristics of high algae, low turbidity, slight pollution, and bromide ion content.

[0021] Devices for advanced water treatment such as figure 1 As shown, 1 lifting pump, 2 ozone contact tank, 3 coagulation reaction tank, 4 sedimentation tank, 5 sand filter tank, 6 biological activated carbon filter tank, 7 disinfection water tank. First, the raw water is injected into the ozone oxidation reaction device 2 through the lift pump 1 for ozone oxidation. The ozone reaction amount is 0.5 mg / L raw water. After a contact time of 4 minutes, it enters the coagulation device 3-precipitation device 4 for flocculation reaction and precipitation. The flocculant is polyaluminum chloride (PAC), and after a residence time of 45 minutes, it enters the sand filter device 5; then, it passes through the biological activat...

Embodiment 2

[0026] The raw water hardness / TOC of a reservoir is 16 (less than 25), therefore, the pre-liming process is adopted. First, lime is added to the raw water for mixing (dosing amount is 15mg / L), and the raw water is injected into the ozone oxidation reaction device 2 through the lift pump 1 for ozone oxidation. The amount of ozone reaction is 2.0mg / L of raw water. Coagulation device 3-precipitation device 4, carries out flocculation reaction and precipitation, and the flocculant used is polyaluminum chloride (PAC), and after residence time 45 minutes, enters sand filtration device 5; It takes 15 minutes (biological activated carbon is formed by the method of biological natural film formation); finally, it enters the disinfection pool and is chlorinated for disinfection.

[0027] The raw water quality and the effluent water quality after lime treatment are listed in Table 2.

[0028] project

Embodiment 3

[0030] In this embodiment, the raw water contains Zhongbucarb pesticide residues, therefore, hydrogen peroxide is added, and the weight ratio of the amount of hydrogen peroxide to the amount of ozone added is 0.20 (wherein the amount of ozone added is 1.57 mg / L).

[0031] First, the raw water is injected into the ozone oxidation reaction device 2 through the lift pump 1 for ozone oxidation. The ozone reaction amount is 1.57mg / L raw water. After a contact time of 4 minutes, hydrogen peroxide (weight ratio is 0.20) is added at the outlet of the ozone contact tank. Enter the coagulation device 3-precipitation device 4, carry out flocculation reaction and precipitation, the flocculant used is polyaluminum chloride (PAC), after the residence time of 45 minutes, enter the sand filter device 5; Then, pass through the biological activated carbon pool 6, hydraulic The residence time is 15 minutes (biological activated carbon is formed by the method of biological natural film formation);...

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Abstract

The invention relates to an integrated deep-treatment technique for the drinking water contained bromine ion, which comprises by turns: oxygenating with ozone, coagulating, depositing, filtering, flowing through the active carbon, and sterilizing to obtain the final water up to WHO standard. This invention controls and removes the byproduct and micro-pollution organic with low cost, and has wide application.

Description

technical field [0001] The invention relates to a water treatment method, in particular to an integrated process treatment method for advanced treatment of drinking water containing bromide ions. Background technique [0002] With the aggravation of water source pollution and the improvement of water quality standards, the quality of drinking water has become a prominent problem faced by my country's water supply industry for a long period of time in the future. In view of the lack of conventional treatment processes, it is urgent to develop around the existing raw water quality. Systematic process research to meet people's needs for water quality. [0003] At present, drinking water plants at home and abroad mainly improve the water quality by improving the process technology on the basis of the original conventional treatment process, among which chemical oxidation is a more commonly used method. At present, the oxidants that can be used for water treatment mainly include ...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/78C02F1/52C02F1/28C02F1/50
Inventor 杨敏郭召海张昱裴义山于建伟
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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