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Slightly polluted water disposal method

A micro-pollution and sewage technology, applied in water/sludge/sewage treatment, water/sewage treatment, light water/sewage treatment, etc., can solve the problem of unsatisfactory treatment effect and achieve the effect of improving the effect

Inactive Publication Date: 2006-11-22
北京坎普尔环保技术有限公司
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Problems solved by technology

[0008] The present invention aims to solve the technical problem that the single treatment method used in the prior art to treat slightly polluted sewage cannot obtain a satisfactory treatment effect, and provides a treatment that combines the ultrafiltration filtration method and the enhanced oxidation method. High-efficiency enhanced oxidation water treatment method for slightly polluted sewage

Method used

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Examples

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Effect test

example 1

[0014] Example 1: The raw water is a reservoir water, the chemical oxygen demand COD=5mg / L, the ammonia nitrogen content NH 3 - N = 6 mg / L. It belongs to slightly polluted water system. The main problem is to reduce the ammonia nitrogen content.

[0015] After being treated with a commercially available hollow fiber ultrafiltration membrane (measured, molecular weight cut-off ~50000dalton, 150000dalton), COD=4mg / L, ammonia nitrogen content NH 3 -N=6mg / L, NH 3 -N is still overkill. Raw water was treated by enhanced oxidation (H 2 o 2 Addition amount 30mg / L, UV dose 150J / L), chemical oxygen demand COD=5mg / L, ammonia nitrogen content NH 3 - N = 5 mg / L. The treatment effect is not obvious. After treated with ultrafiltration membrane and then treated with enhanced oxidation method, the results are shown in Table 1, and the water quality has reached the standard for use.

[0016] ultrafiltration molecular weight cut off

[0017] Example 2 The raw water is sewage f...

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Abstract

This invention relates to a method for treating light polluted water, characterizing: firstly remove the suspended substances and colloid in the light polluted water by ultrafiltration, and then oxidize the contaminants in the light polluted water by intensified oxidation combining ultraviolet and oxidant. This method can greatly improve the intensified oxidation efficiency , and can be used in decolouration of colored light polluted water and decreasing the ammonia nitrogen and chemical oxygen consumption index in the light polluted water.

Description

Technical field: [0001] The present invention generally relates to sewage treatment, and in particular relates to a treatment method for slightly polluted sewage. Background technique: [0002] Slightly polluted sewage is mainly characterized by low content of organic pollutants and poor biodegradability of organic pollutants. Due to the increasing shortage of natural water resources, the reuse of slightly polluted sewage is an important technical field. [0003] The most common enhanced oxidation method is to use hydrogen peroxide to generate free radicals (OH) under the action of ultraviolet light, especially 185nm ultraviolet light, to greatly enhance its oxidation ability. At the same time, 185nm ultraviolet light itself can also cut off almost all chemical bonds in organic matter, degrading organic matter. Therefore, the enhanced oxidation method can change the chemical composition and properties of organic matter in sewage. [0004] For highly polluted water with hi...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/32C02F1/72
Inventor 孟广桢
Owner 北京坎普尔环保技术有限公司
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