Treatment technology of polyvinglalcohol floating pulp waste water

A polyvinyl alcohol and treatment process technology, applied in the field of industrial wastewater treatment process, can solve problems such as difficult promotion, difficult operation, complicated process, etc., and achieve the effects of low cost, easy operation, and simple process

Inactive Publication Date: 2003-12-03
山东同济环境工程设计院有限公司
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Problems solved by technology

At present, the physical and chemical concentrated ultrafiltration method is mainly used to recycle polyvinyl alcohol bleaching wastewater at home and abroad. This method is expensive and is limited to wastewater with high polyvinyl alcohol concentratio

Method used

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Embodiment Construction

[0010] The anaerobic biological system adopts the UASB+AF method, the temperature is 35-38°C, the water distribution at the bottom is uniform, and there is sludge inside. There is a water collection device and a biogas collection device on the upper part of the structure. The wastewater stays in the anaerobic stage for 15 days. , the CODcr in the wastewater after anaerobic biological treatment is 2500mg / l. After the completion, the aerobic biological treatment is carried out by sedimentation; Gas culture, the residence time of wastewater is 28 hours, and the dissolved oxygen in the effluent is controlled above 2mg / l, starting at 0.1kg / m 3 Add the organic load of .d into the wastewater, and then gradually increase the organic load according to the number of dominant bacteria that decompose polyvinyl alcohol. The CODcr is 250mg / l, and the final effluent CODcr is 150mg / l after completion, reaching the discharge standard. The following is the content change of CODcr in the wastew...

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Abstract

A process for treating the sewage generated by rinsing polyvinyl alcohol includes such steps as naturalizing and culturing the bacteria able to decompose polyvinyl alcohol, anaerobic biologic treating, aerobic biologic treating, and physiochemical treating, and the treated bacteria removing the organic substances contained in the sewage. Its advantages are high effect and low cost.

Description

technical field [0001] The invention relates to a treatment process for industrial waste water, in particular to a treatment process for polyvinyl alcohol bleaching waste water. Background technique [0002] Due to the high organic content in polyvinyl alcohol bleaching wastewater, its CODcr content reaches 3000-4000mg / l, which is not easy to biodegrade. At present, the physical and chemical concentrated ultrafiltration method is mainly used to recycle polyvinyl alcohol bleaching wastewater at home and abroad. This method is expensive and is limited to wastewater with high polyvinyl alcohol concentration; there are also pure bacteria that screen and decompose polyvinyl alcohol. A kind of inoculation treatment, but the process is complicated, difficult to operate, and difficult to be widely promoted. Except this, do not find to have the treatment method to this waste water. Contents of the invention [0003] The technical problem to be solved by the invention is to treat ...

Claims

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Application Information

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IPC IPC(8): B01D21/00C02F3/02C02F3/30
CPCY02W10/10
Inventor 谷翠芹王院生
Owner 山东同济环境工程设计院有限公司
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