A method for treating high-concentration alkaline resin desorption liquid by catalytic ozonation technology

A basic resin and ozone oxidation technology, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, water treatment of special compounds, etc., can solve the problems of strong alkalinity and difficult biochemical treatment, etc., and achieve the improvement of reaction speed and utilization rate The effect of improving and improving biodegradability

Active Publication Date: 2020-10-16
NANJING UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Aiming at the problem that the existing high-concentration alkaline resin desorption liquid is difficult to carry out biochemical treatment due to strong alkalinity, the present invention proposes a method for treating high-concentration alkaline resin desorption liquid by catalytic ozonation technology

Method used

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  • A method for treating high-concentration alkaline resin desorption liquid by catalytic ozonation technology

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Embodiment 1

[0045] Such as figure 1 As shown, a certain industrial wastewater enters the wastewater regulating tank and discharges biochemical tail water (B / C value is 0.01) after biochemical treatment. ) carry out the elution of ion-exchange resin and reclaim basic resin desorption liquid as alkali eluent, described basic resin desorption liquid comprises sodium hydroxide, inorganic ion and organic matter, and described sodium hydroxide mass concentration is 8 %, the total concentration of the inorganic ions is less than 200mg / L, wherein the inorganic ions include Na + 、K + , Mg 2+ , Ca 2+ , Cl - 、PO 3 3- , SO 4 2- , the content of the organic matter is 10000mg / L, wherein the organic matter includes humic acid, fulvic acid, aromatic compound, and microbial metabolites; then successively add aluminum chloride and ozone to the recovered alkaline resin desorption liquid, wherein the chlorine The input amount of aluminum is to drop into 5g aluminum chloride in the alkaline resin des...

Embodiment 2

[0047] Such as figure 1 As shown, a certain industrial wastewater enters the wastewater regulating tank and discharges biochemical tail water (B / C value is 0.02) after biochemical treatment. After adsorption and saturation of ion exchange resin, sodium hydroxide solution (the mass concentration of sodium hydroxide solution is 4% ) carry out the elution of ion-exchange resin as alkali eluent and reclaim basic resin desorption liquid, described basic resin desorption liquid comprises sodium hydroxide, inorganic ion and organic matter, and described sodium hydroxide mass concentration is 4 %, the total concentration of the inorganic ions is less than 200mg / L, wherein the inorganic ions include Na + 、K + , Mg 2+ , Ca 2+ , Cl - 、PO 3 3- , SO 4 2- , the content of the organic matter is 5000mg / L, wherein the organic matter includes humic acid, fulvic acid, aromatic compound, and microbial metabolites; then successively add aluminum chloride and ozone to the recovered alkaline...

Embodiment 3

[0049] Such as figure 1 As shown, a certain industrial wastewater enters the wastewater regulating tank and discharges biochemical tail water (B / C value is 0.05) after biochemical treatment. After adsorption and saturation of ion exchange resin, sodium hydroxide solution (the mass concentration of sodium hydroxide solution is 2% ) carry out the elution of ion-exchange resin and reclaim basic resin desorption liquid as alkaline eluent, described basic resin desorption liquid comprises sodium hydroxide, inorganic ion and organic matter, and described sodium hydroxide mass concentration is 2 %, the total concentration of the inorganic ions is less than 200mg / L, wherein the inorganic ions include Na + 、K + , Mg 2+ , Ca 2+ , Cl - 、PO 3 3- , SO 4 2- , the content of the organic matter is 2000mg / L, wherein the organic matter includes humic acid, fulvic acid, aromatic compound, microbial metabolites; then successively add aluminum chloride and ozone to the recovered alkaline r...

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Abstract

The invention discloses a method for treating high-concentration alkaline resin desorption liquid by a catalytic ozonation technique, and belongs to the field of wastewater treatment by the ozonationtechnique. The method includes the steps: (1) enabling industrial wastewater to enter a wastewater adjusting tank to perform biological treatment, and discharging biochemical tail water after biological treatment; (2) conveying the biochemical tail water into ion exchange resin to perform resin adsorption and desorption treatment; (3) performing alkali liquor elution on the ion exchange resin after resin adsorption and desorption treatment, and recycling alkaline resin desorption liquid; (4) adding the aluminum chloride and ozone into the recycled alkaline resin desorption liquid to perform ozone catalyzed oxidation treatment; (5) adjusting a pH (potential of hydrogen) value of the resin desorption liquid after ozonation to reach 6-8, performing flocculant precipitation, and conveying theresin desorption liquid into the wastewater adjusting tank to be circularly treated. According to the problem that biochemical treatment of existing high-concentration alkaline resin desorption liquidis difficult as alkalinity is high. According to the method, the high-concentration alkaline resin desorption liquid is treated by the catalytic ozonation technique, and the biodegradability of the resin desorption liquid can be improved.

Description

technical field [0001] The invention belongs to the industrial field of wastewater treatment by ozone oxidation technology, and relates to a method for treating high-concentration alkaline resin desorption liquid by catalytic ozone oxidation technology. Background technique [0002] In recent years, the problem of water pollution in my country has become increasingly serious. With the rapid development of economy and society, water pollution in some river basins is showing a trend of increasing. Various complex pollutants lead to the decline of water environment quality, the damage of water ecosystem, and the increase of environmental hidden dangers. On the one hand, water resources are scarce in the central, western and northern areas, which require advanced treatment of urban sewage and industrial wastewater to increase the recycling rate. On the other hand, the problem of drinking water safety has become increasingly prominent. There are more and more trace organic pollu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
CPCC02F1/5245C02F1/66C02F1/725C02F1/78C02F9/00C02F2209/08C02F2305/023
Inventor 张炜铭韩月单超潘丙才吕路
Owner NANJING UNIV
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