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High-salt organic industrial wastewater treatment process method

A technology for industrial waste water and treatment process, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high investment cost, poor effect, low efficiency, etc., and achieve reduction pollution effect

Active Publication Date: 2014-03-19
郑州大学环境技术咨询工程有限公司
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Problems solved by technology

[0004] In view of the above situation, in order to solve the defects of the prior art, the purpose of the present invention is to provide a high-salt organic industrial wastewater treatment process, which can effectively solve the problems of high investment cost, low efficiency and poor effect of the prior art

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  • High-salt organic industrial wastewater treatment process method

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Embodiment 1

[0021] a) Pretreatment of plasticizer wastewater: Pass the plasticizer wastewater through the oil separator, the flow rate of the oil separator is controlled at 0.03mm / s, and then put it into the sedimentation tank, stir it with a stirrer for 10min, add 5% volume concentration of Polyaluminum chloride and polyacrylamide with a volume concentration of 5‰ are used as flocculants, and the addition amount is 1 to 5‰ of the plasticizer wastewater volume. After flocculation and precipitation, the supernatant is taken to adjust the pH with sulfuric acid with a volume concentration of 98%. 1.5~2.0, then add sodium metabisulfite with a volume concentration of 1~2‰ as an antioxidant, the amount added is 1‰ of the plasticizer wastewater volume, stir to dissolve, settle for 24 hours, enter the precision filter, the precision filter Flow control at 0.025m 3 / h, after the treatment of the above process, the suspended solids, colloids, part of phthalic acid and COD in the wastewater are remo...

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Abstract

The invention relates to a high-salt organic industrial wastewater treatment process method for effectively solving the problems that the prior art is high in investment cost, low in efficiency and poor in effect. According to the technical scheme, the method comprises the following steps: a) performing pretreatment on plasticizer wastewater; b) adsorbing by using resin; c) mixing; d) reducing sulfate; e) oxidizing sulfide; f) precipitating elemental sulfur; g) generating methane under an anaerobic condition; h) oxidizing in biologic contact; j) participating for the second time. By adopting the method, pollutants in wastewater can be effectively eliminated, so that the pollution on the environment is reduced, and meanwhile phthalic acid recycled after resin adsorption can be further reused as a plasticizer production raw material, so that the method is innovation of organic industrial wastewater treatment.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a high-salt organic industrial wastewater treatment process. Background technique [0002] High-salt organic industrial wastewater mainly refers to that the wastewater contains not only high-concentration, refractory water-soluble organic pollutants, but also high-concentration inorganic salts, such as Cl - , SO 4 2- 、Na + , Ca 2+ wait. The high-salt organic industrial wastewater mentioned here mainly refers to plasticizer production wastewater, which contains high salinity (mainly SO 4 2- 、Na + ) and water-soluble organic phthalic acid. [0003] In the face of this kind of high-salt organic industrial wastewater, the existing treatment technology has problems such as high investment cost, low efficiency, poor effect, etc., and the treatment device is huge and the operation cost is expensive, which brings a heavy burden to the enterprise. Scholars at home and ab...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 于鲁冀王惠英柏义生梁亦欣吴小宁刘攀龙
Owner 郑州大学环境技术咨询工程有限公司
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