Method for synchronously removing pollutants in water and controlling generation of bromine-containing byproducts

A technology of pollutants and by-products, applied in the field of water treatment, can solve problems that hinder practical application, and achieve the effects of wide application range, low operating cost, and simple and easy operation

Active Publication Date: 2020-03-17
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, although advanced oxidation technology has outstanding advantages in treating organic pollution, the bromine-containing by-products produced in the treatment of bromine-containing water hinder its practical application in water treatment.

Method used

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  • Method for synchronously removing pollutants in water and controlling generation of bromine-containing byproducts
  • Method for synchronously removing pollutants in water and controlling generation of bromine-containing byproducts

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0034] This embodiment includes the following steps:

[0035] With dilute sulfuric acid and sodium hydroxide solution, the initial pH of the water to be treated containing propranolol is adjusted to 6, and then potassium bromide, A medicament (iron ion or ferrous ion), B medicament (sulfurous acid) are added to the water successively. salt, or persulfate), aeration and stirring for 60 minutes at a water temperature of 25°C to complete the removal of propranolol and bromate by using the transition metal / sulfite system and the transition metal / persulfate system control. Wherein, the molar concentration ratio of propranolol, potassium bromide, agent A and agent B in the water to be treated is 1:1:5:25.

[0036] In this embodiment, transition metal / sulfite system and transition metal / persulfate system in 1 to the removal effect of propranolol and to the control contrast bar graph of bromate are as follows figure 1 shown. The legend "ZVI / sulfite / photo" in the figure represents t...

Embodiment 2

[0038] This embodiment includes the following steps:

[0039] Use dilute sulfuric acid and sodium hydroxide solution to adjust the initial pH of the water to be treated containing bromine organic matter to 6, then add A agent (iron ion or ferrous ion) and B agent (sulfite or persulfate) to the water in sequence, The aeration and stirring reaction at a water temperature of 25° C. for 120 minutes completed the organic matter removal test using the transition metal / sulfite system and the transition metal / monopersulfate system. Afterwards, a certain amount of water samples were taken out at predetermined time intervals, and after esterification and organic phase extraction, the formation of methylhalides and haloacetic acids in the system was checked. Among them, the molar concentration ratio of organic matter in the water to be treated, agent A and agent B is 1:5:50.

[0040] In the present embodiment 2, the generation of brominated by-products of transition metal / sulfite system...

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Abstract

The invention belongs to the field of water treatment, and particularly discloses a method for synchronously removing pollutants in water and controlling the generation of bromine-containing byproducts. The method comprises the following steps: (1) regulating the pH value of to-be-treated water to 2-6, wherein the to-be-treated water contains organic pollutants and bromine; (2) adding an agent A and an agent B into the to-be-treated water obtained in step (1), and then carrying out an aeration stirring reaction at a water temperature of 0-40 DEG C for 10-60 min so as to synchronously remove the organic pollutants in the water and control the generation of bromine-containing byproducts in order to obtain purified water, wherein a molar ratio of the organic matter to the agent A to the agentB is 1:(2.5-50):(5-100). Improvement of the types and proportions of the reagents added into the water effectively solves the technical problem that bromate and brominated byproducts are generated byan advanced oxidation technology.

Description

technical field [0001] The invention belongs to the field of water treatment, and more specifically relates to a method for synchronously removing pollutants in water bodies and controlling the generation of bromine-containing by-products, especially a method suitable for water bodies containing bromide ions, capable of synchronously removing pollutants and Sulfate radical advanced oxidation technology to control bromate and bromide by-product formation. Background technique [0002] In recent years, with the rapid economic development, my country's water and soil environment has been seriously polluted, among which surface rivers, lakes, groundwater and soil are particularly polluted by persistent refractory organic compounds. At present, the methods used to remediate surface water, groundwater and soil organic pollution mainly include physical adsorption, chemical reduction, biodegradation, chemical precipitation and advanced oxidation. Among them, the advanced oxidation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/12C02F101/36C02F101/30
CPCC02F1/66C02F1/72C02F2101/12C02F2101/30C02F2101/36
Inventor 谢鹏超张立张辰邹瑜佳丁家琪万颖王晶文白帆
Owner HUAZHONG UNIV OF SCI & TECH
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