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Reclaimed water treatment method based on magnetic resin adsorption coupled electric adsorption

A technology of magnetic resin and treatment method, which is applied in magnetic field/electric field water/sewage treatment, natural water treatment, toilet black water treatment, etc. Highlight the effect of substantial progress, low cost and easy operation

Active Publication Date: 2014-07-16
NANJING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the fact that the organic pollutants in the existing sewage have a great impact on the life of the electro-adsorption electrode, in addition, the organic ions will compete with the inorganic ions for the adsorption sites, thereby reducing the desalination efficiency of the electro-adsorption, and the single electro-adsorption process performs advanced treatment on the wastewater , the problem of being unable to achieve the goal of high-efficiency, economical and high-quality water quality, a regenerated water treatment method based on magnetic resin adsorption coupled with electro-adsorption is provided, which is suitable for the treatment of sewage with relatively high organic pollutant content, especially with electro-adsorption Advantages, as well as ensuring the life of the electrode, achieving the goal of efficient, economical and high-quality water quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Secondary biochemical tail water indicators of large urban sewage treatment plants: CODcr 60-80mg / L, chroma 45-60 degrees (platinum-cobalt colorimetric method), total nitrogen 15-20mg / L, total phosphorus 3mg / L, total salt The amount is 1500mg / L. at 10m 3 / h flow into 10m 3In the upflow type pneumatic stirring reactor, add the magnetic resin that is 1:300 with waste water volume ratio to reactor simultaneously from resin storage tank (this magnetic resin has very good for various organic substances, chromaticity and total phosphorus total nitrogen Treatment effect, the preparation method of resin can be seen the resin of embodiment 1 in the patent application 201010017687.1, developed by Nanjing University, the same below), the electro-adsorption device used (the electro-adsorption device has a large number of reports in the existing literature, belongs to those well known in the art The concept will not be repeated here, the main improvement point is the use of a new ...

Embodiment 2

[0031] After the secondary biochemical effluent of a large industrial park sewage treatment plant is filtered by coagulation and sedimentation, its water quality indicators: CODcr is 70-110mg / L, chromaticity is 60-100 degrees (platinum-cobalt colorimetric method), and total nitrogen is 15-25mg / L, total phosphorus 2-3mg / L, total salt 2000mg / L. by 1m 3 / h flow into 1m 3 In the steel mechanical stirring reactor, add the magnetic resin (this magnetic resin adopts the resin in the embodiment 2 in the patent application 201010017687.1, developed by Nanjing University) that is 1:100 with the waste water volume ratio to the reactor from the resin storage tank simultaneously, The resin and wastewater are mixed and stirred at a speed of 180r / h in the reactor for 1 hour. After the reaction is completed, the outlet above the reactor flows into the inclined plate sedimentation tank, and the resin and water are separated by the magnetic aggregation of the resin itself. Enter the electro-...

Embodiment 3

[0033] Secondary biochemical effluent from a sewage plant in a waste paper and papermaking park (CODcr 135mg / L, chroma 75 degrees (platinum-cobalt colorimetric method), total nitrogen 20mg / L, total phosphorus 2mg / L, total salt 1700mg / L). at 0.5m 3 / h flow into 0.5m 3 In the steel mechanically stirred reactor, add the magnetic resin (this magnetic resin adopts the resin in the embodiment 3 in the patent application 201010017687.1, developed by Nanjing University) that is 1:100 with the waste water volume ratio to the reactor from the resin storage tank simultaneously, The resin and waste water are mixed and stirred at a speed of 150r / h in the reactor for 1 hour. After the reaction is completed, the outlet above the reactor flows into the sedimentation tank, and the resin and water are separated by the magnetic aggregation of the resin itself. The adsorption device is used for desalination under the operating parameters of influent flow rate of 10L / h and voltage of 1.8V. The r...

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Abstract

The invention discloses a reclaimed water treatment method based on magnetic resin adsorption coupled electric adsorption, and belongs to the domain of preparation of reclaimed water. The method comprises the steps of pumping biochemical effluent of wastewater into a reactor added with magnetic resin particles to effectively reduce the chroma, organic matters, total nitrogen and total phosphorus in the wastewater; and performing precipitation separation on the fully mixed and adsorbed wastewater in a precipitation tank, refluxing the separated magnetic resin part, delivering the refluxed part to a regeneration tank, introducing the wastewater adsorbed by the magnetic resin into an electric adsorption device, desalting the wastewater, and further reducing a small amount of organic matters and inorganic impurities in the water. The indexes such as organic matter content, chroma, total nitrogen, total phosphorus and total salt in the water subjected to deep treatment of the integrated process are obviously reduced. The method can effectively reduce the organic matters, the chroma and the content of the total salt and the like in the wastewater, an electric adsorption electrode has a longer service life, and an efficient and economic preparation method for high-quality reclaimed water is provided.

Description

technical field [0001] The invention belongs to the field of advanced treatment of wastewater biochemical effluent, in particular, it relates to a regenerated water treatment method based on magnetic resin adsorption coupled with electric adsorption, more specifically, it relates to a method for effectively removing An efficient and economical reclaimed water treatment method for indicators such as residual chroma, organic matter, total phosphorus, total nitrogen and total salt in wastewater biochemical effluent. Background technique [0002] Due to the process of urban industrialization, rapid population growth and increasingly serious environmental pollution, the current global water shortage problem has increased dramatically since the beginning of the 21st century, and my country's water resource problem is also very serious. In order to solve the fresh water crisis, the technology for treating industrial, agricultural and urban sewage requires deep purification of inorg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12
CPCB01J41/14B01J20/20C02F2101/105C02F2101/16C02F2101/30C02F2103/28B01J41/05B01J49/57B01J49/75C02F1/283C02F1/285C02F1/42C02F1/4604C02F1/4691C02F2001/422C02F2103/34C02F2303/16C02F1/48C02F1/44C02F1/52C02F9/00C02F2103/005C02F2201/461
Inventor 李爱民王长明宋海欧王柏俊江野立朱兆连陈讯王骏姚志建双陈冬李海波黄玉
Owner NANJING UNIV
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