Method for processing high-density PVA-containing desizing wastewater and device thereof
A technology for desizing wastewater and treatment device, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Low, simple structure effect
Active Publication Date: 2015-01-28
HUAWEI TEHCHNOLOGIES CO LTD
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[0005] The technical problem to be solved by the present invention is: in order to solve the treatment of complex and changeable desizing wastewater containing high concentration PVA, the present invention provides a method and device for treating desizing wastewater containing high concentration PVA
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[0038] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.
[0039] like figure 1As shown, the present invention is a method and device for treating high-concentration PVA-containing desizing wastewater, including a wastewater conditioning tank, a coagulation sedimentation tank 2, a salt precipitation tank 3, an advanced oxidation reaction sedimentation tank 4, and a baffle-type anoxic anaerobic reaction. Tank 5, aerobic tank 6 and secondary sedimentation tank; the waste water conditioning tank, coagulation sedimentation tank 2, salt precipitation tank 3, advanced oxidation reaction sedimentation tank 4, partition type anoxic anaerobic reaction tank 5, aerobic tank 6 and the secondary sedimentation tank are connected...
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The invention relates to a method for processing high-density PVA-containing desinzing wastewater and a device thereof. The device comprises a wastewater regulating tank, a coagulation sedimentation tank, a salting-out tank, an advanced oxidation reaction sedimentation tank, a diaphragm type hypoxic-anaerobic reaction tank, an aerobic tank, and a secondary sedimentation tank; the coagulation sedimentation tank, the salting-out tank, and the advanced oxidation reaction sedimentation tank all comprise a mixing and stirring area and a sedimentation area, the diaphragm type hypoxic-anaerobic reaction tank comprises a facultative segment, an anoxic segment, and an anaerobic segment which are formed by separating the diaphragm type hypoxic-anaerobic reaction tank with baffle plates; the water volume and pH value of waste water are adjusted in the wastewater regulating tank, then the wastewater enters the coagulation sedimentation tank and is mixed with a coagulation agent to carry out reactions, then wastewater enters the salting-out tank to carry out a salting-out reaction, the pollutant is oxidized and decomposed in the advanced oxidation reaction sedimentation tank, then wastewater enters the diaphragm type hypoxic-anaerobic reaction tank and the aerobic tank to carry out hypoxic, anaerobic and aerobic reactions, then the waste water is subjected to a sedimentation treatment, and finally the wastewater is discharged when the quality of the wastewater meets standards. The device has the advantages of simple structure, low manufacture cost, and very good processing effect.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment method and device for high-concentration PVA-containing desizing wastewater. Background technique [0002] my country's textile printing and dyeing wastewater accounts for 35% of industrial wastewater discharge, and it is a major industrial wastewater discharger. Among them, desizing wastewater is a difficult-to-treat industrial wastewater, with large fluctuations in water volume and quality, complex components, and extremely high COD content, often containing polyethylene. Refractory pollutants such as alcohol (PVA) have poor biodegradability. [0003] The treatment methods for PVA-containing wastewater at home and abroad mainly include foam separation, ultrafiltration salting out, oxidant oxidation, microwave radiation, ultrasonic degradation, advanced oxidation, high-efficiency degrading bacteria biodegradation, anaerobic biological treatment, membrane trea...
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IPC IPC(8): C02F9/14
Inventor 万玉山黄利涂保华邵敏王莉
Owner HUAWEI TEHCHNOLOGIES CO LTD