Drinking water source advanced water treatment method based on resin and zeolite

A deep purification and treatment method technology, applied in the direction of water/sewage multi-stage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., to achieve the effect of saving treatment cost, reducing treatment time and improving removal efficiency

Active Publication Date: 2010-10-20
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the problem that seasonally high organic pollutants and seasonally high ammonia nitrogen are difficult to deal with in drinking water treatment, the present invention provides a deep purification treatment method for drinking water source water based on resin and zeolite, aiming at seasonally high organic matter and high Ammonia nitrogen is treated with powder resin and zeolite, which can not only solve the problem of seasonal high organic matter and high ammonia nitrogen, reduce treatment time, improve removal efficiency, but also reduce operating costs through repeated regeneration of salt solution, and use zeolite resourcefully and resin, saving on processing costs

Method used

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  • Drinking water source advanced water treatment method based on resin and zeolite

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Embodiment 1

[0029] Influent COD of a source water Mn 6mg / L, ammonia nitrogen content is 2.0mg / L, with 20m 3 / h flow rate into 10m 3 Stirred reactor, while adding 0.1m 3 The magnetic styrene-based strong base anion exchange resin (the magnetic styrene-based strong base anion exchange resin identified in the patent application 200910264445.X submitted by Nanjing University on December 22, 2009) and 0.1m 3 natural zeolite (40 mesh) in fresh resin tank with 0.1m 3 Pump the mixture of resin zeolite and water at a flow rate of / h, and stir well in the reactor. The resin zeolite and the reacted effluent mixture enter the inclined plate sedimentation tank to realize the separation of resin zeolite and water, and the resin zeolite precipitated at the bottom is separated by 0.1m 3 The flow rate per hour enters the buffer tank, of which 80% (weight percentage) is pumped into the reactor for reuse, 20% (weight percentage) enters the regeneration tank, and is regenerated with a 12% weight percenta...

Embodiment 2

[0034] Influent COD of a source water Mn 10mg / L, ammonia nitrogen content is 3.0mg / L, with 20m 3 / h flow rate into 20m 3 Stirred reactor, while adding 0.2m 3 The magnetic acrylic strong base anion exchange resin (the magnetic acrylic strong base anion exchange resin identified in the patent application 201010017687.1 submitted by Nanjing University on January 12, 2010) and 0.4m 3 artificial zeolite (20-40 mesh) in fresh resin tank with 0.2m 3 Pump the mixture of resin zeolite and water at a flow rate of / h, and stir well in the reactor. The resin zeolite and the reacted effluent mixture enter the inclined plate sedimentation tank to realize the separation of resin zeolite and water, and the resin zeolite precipitated at the bottom is separated by 0.2m 3 The flow rate of / h enters the buffer tank, 90% (weight percentage) of which is pumped into the reactor for reuse, 10% (weight percentage) enters the regeneration tank, and is regenerated with a 15% weight percentage NaCl sol...

Embodiment 3

[0039] Influent COD of a source water Mn 15mg / L, ammonia nitrogen content is 5.0mg / L, with 20m 3 / h flow rate into 20m 3 Stirred reactor, while adding 0.5m 3 Magnetic acrylic strong base anion exchange resin (the magnetic acrylic strong base anion exchange resin identified in the patent application 201010017687.1 submitted by Nanjing University on January 12, 2010) and 1m 3 artificial zeolite (20-40 mesh) in fresh resin tank with 0.1m 3 Pump the mixture of resin zeolite and water at a flow rate of / h, and stir well in the reactor. The resin and the reacted effluent mixture enter the inclined plate sedimentation tank to realize the separation of resin zeolite and water, and the resin zeolite precipitated at the bottom is separated by 0.2m 3 The flow rate per hour enters the buffer tank, 90% of which is pumped into the reactor for reuse, 10% enters the regeneration tank, and is regenerated with a 20% NaCl solution by weight, and the regenerated resin zeolite enters a fresh r...

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Abstract

The invention discloses a drinking water source advanced water treatment method based on resin and zeolite, belonging to the water treatment field of drinking water source; the method comprises the following steps: powder resin and zeolite are added in a reactor, water from the drinking water source flows through the reactor, mixed liquid of resin and zeolite and clean water is pumped from a fresh resin tank to the reactor; the treated mixed water flows out after being precipitated magnetically or naturally. The precipitated resin and zeolite flow back to the reactor, and part of the resin and zeolite is fed to a regeneration tank, regeneration agent is added in the regeneration tank for carrying out regeneration to the resin and zeolite, and the used regeneration agent is purified for reuse or disposed; the regenerated resin and zeolite are fed into the fresh resin tank for spare, and the regenerated resin and zeolite are reused to the reactor according to needs. The treated water reaches the current city water supply quality standard and sanitary standard for drinking water, the purpose of reducing organic matters and ammonia nitrogen and other disinfection by-products is realized. The invention has the advantages of simple process, low investment, low operation cost and good treatment effect.

Description

technical field [0001] The invention relates to a treatment method for drinking water source water with high seasonal pollution load, specifically refers to the rapid removal of seasonal high organic pollutants and seasonal high ammonia nitrogen in drinking water source water by using ion exchange resin with magnetic powder and zeolite Methods. Background technique [0002] In recent years, with the rapid development of my country's economy and the significant improvement of living standards, the quality of surface water sources has deteriorated, and at the same time people's requirements for drinking water quality are constantly increasing. The key problem facing the current drinking water treatment is the removal of seasonal high organic pollutants and seasonal high ammonia nitrogen. Natural organic substances (such as humic acid, etc.) will cause problems such as color, smell and taste, and are considered to be the precursors of halogenated disinfection by-products, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/12C02F1/48C02F1/42C02F1/28
Inventor 李爱民王琼杰王津南双陈冬周扬徐丽
Owner NANJING UNIV
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