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Ozone and coagulation mutual promotion synergistic method for enhancing organic matter removal efficiency

An organic matter and ozone technology, applied in the field of water treatment, can solve the problems of low removal efficiency of dissolved organic matter, destroying the removal effect of subsequent coagulation process, and difficulty in guaranteeing the removal effect of dissolved organic matter, and achieves simple operation, high removal rate, and removal of Efficient effect

Inactive Publication Date: 2016-07-27
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

However, the coagulation process mainly removes suspended solids and colloidal substances in water, and the removal efficiency of dissolved organic matter is very low.
Therefore, the pre-ozonation process is usually used to improve the removal effect of the subsequent coagulation process, and the pre-ozonation-coagulation process requires very precise control of the ozone dosage. Too high or too low ozone dosage will damage the subsequent coagulation process. The removal effect of the coagulation process and the removal effect of dissolved organic matter are difficult to guarantee

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  • Ozone and coagulation mutual promotion synergistic method for enhancing organic matter removal efficiency
  • Ozone and coagulation mutual promotion synergistic method for enhancing organic matter removal efficiency

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Embodiment Construction

[0020] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0021] An ozone coagulation mutual promotion and synergy method for improving organic matter removal efficiency, the implementation steps are as follows:

[0022] Step 1: Add a suitable metal salt coagulant to the raw water to destabilize the colloids and suspended solids in the water, and the Zeta potential rises to around 0mV to form insoluble particles, and the stirring intensity is maintained at 100-1 , for 1 to 2 minutes.

[0023] Step 2: Reduce the stirring intensity to 10-1 , then add the prepared ozone water, so that the ozone dosage is 0.5 ~ 1.5mgO 3 / mgDOC, continue to stir for 30-60 minutes, and the metal salt coagulant catalyzes ozone to form a large number of hydroxyl radicals through a chain reaction, and ozone promotes the hydrolysis of the metal salt coagulant into more polymeric hydrolyzate, forming ozone coagulation mutual prom...

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Abstract

The invention discloses an ozone and coagulation mutual promotion synergistic method for enhancing the organic matter removal efficiency. The ozone and coagulation mutual promotion synergistic method has the advantages that metal salt coagulants and ozone are added into a system, accordingly, actions of coagulation and ozonation are simultaneously carried out in the system, the metal salt coagulants can be used as catalysts, the ozone can be promoted by the catalysts to generate large quantities of hydroxyl free radicals by means of chain reaction, and advanced oxidation reaction mechanisms can be implemented; the metal salt coagulants can be promoted by the ozone to be hydrolyzed to generate large quantities of hydrolysis products in polymeric forms, accordingly, coagulation effects can be improved, mutual promotion synergistic mechanisms can be formed, the soluble organic matter removal efficiency can be greatly enhanced, and the service safety of drinking water and recycled water can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of water treatment, relates to advanced sewage treatment technology and drinking water treatment technology, in particular to an ozone coagulation mutual promotion and synergistic method for improving the removal efficiency of organic matter. Background technique [0002] Coagulation process is a drinking water treatment technology, and it is also often used in the advanced treatment of urban sewage. However, the coagulation process mainly removes suspended solids and colloidal substances in water, and the removal efficiency of dissolved organic matter is very low. Therefore, the pre-ozonation process is usually used to improve the removal effect of the subsequent coagulation process, and the pre-ozonation-coagulation process requires very precise control of the ozone dosage. Too high or too low ozone dosage will damage the subsequent coagulation process. The removal effect of the coagulation process and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/78
CPCC02F1/5281C02F1/78C02F2305/023
Inventor 金鹏康金鑫侯瑞王帅
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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