Method for processing negative ion surface active agent in wastewater

A surfactant and treatment method technology, applied in the direction of adsorption water/sewage treatment, neutralization water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of anionic surfactant transfer, degradation ability, pollution Air and other problems, to achieve the effect of short treatment process route, simple treatment equipment and fast adsorption speed

CN101628762AInactive Publication Date: 2010-01-20UNIV OF SHANGHAI FOR SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-01-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for processing negative ion surface active agent in wastewater, belonging to the field of chemical environmental protection and adopting the steps of wastewater acidification pretreatment, filtration, quaternary ammonium cationic cellulose composite adsorption column adsorption, and the like; and the process route of treatment is short, and the concentration of negative ion surface active agent in the treated water is greatly lower than the national wastewater discharge standard. The processing method of the invention has the advantages of simple process equipment, low energy consumption, high adsorption speed and large adsorption capacity, adsorbent can be used in the way of regeneration and circulation, the processing cost is low, and raw materials used for preparing the quaternary ammonium cationic cellulose has low production cost and wide range of acquisition, is non-toxic, can not cause secondary pollution to environment, etc.
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Description

Technical field:

[0001] The invention relates to a method for treating anionic surfactants in waste water, which belongs to the field of chemical environmental protection. Background technique:

[0002] At present, the methods commonly used to treat this kind of wastewater mainly include activated carbon adsorption method, foam separation method, photocatalytic oxidation method, ultrasonic degradation method, membrane filtration technology, chemical flocculation method and microbial method. Although these methods have varying degrees of application in the treatment of this type of wastewater, they all have certain limitations and need to be further improved: the activated carbon adsorption method has a better adsorption effect at room temperature, but the regeneration energy consumption of activated carbon is large, and the adsorption after regeneration The capacity will be reduced to varying degrees, which limits its application; the foam separation method is simple in proc...

Examples

Embodiment 1

[0039] Get the waste water of Shanghai Volkswagen No. 3 Plant Waste Water Station, and apply a kind of treatment method of anionic surfactant in waste water of the present invention to carry out waste water treatment.

[0040] (1), wastewater acidification pretreatment:

[0041] Add 0.1mol / L hydrochloric acid to the wastewater containing anionic surfactant

[0042] Adjust the pH of the wastewater to 5±0.5 with liquid, and let it stand for 4 hours;

[0043] (2) Filtration of waste water:

[0044] The pretreated wastewater in step (1) is filtered to remove insoluble matter through sedimentation; the processing load of the composite adsorbent is reduced to prevent the adsorption column from clogging;

[0045] (3), column adsorption:

[0046] Preparation of quaternary ammonium-like cationic cellulose composite adsorption column:

[0047] First, soak medical absorbent cotton in 0.1mol / L sodium hydroxide solution for 24hrs to prepare alkali fibers, and use isopropanol as the rea...