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Wood processing wastewater treatment method

A technology for processing wastewater and treatment methods, which is applied in the directions of processing wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problems of complex wastewater components, difficult liquid separation, and difficult-to-treat wastewater. Achieve the effect of low water content of filter cake, large processing capacity and strong corrosion resistance

Active Publication Date: 2013-01-02
大连格兰清水环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The wastewater produced by wood processing has some biochemical substances, and the composition of the impurities contained in the wastewater is also relatively complex, so it is difficult for ordinary wastewater treatment methods to treat this type of wastewater
Generally, a fixed pool is used to filter sewage, but the amount of wastewater treated by this wastewater device is small, and when there is a lot of sludge, the liquid is not easy to separate from the solid

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0012] Taking solid wood furniture processing as an example, the waste water treatment method of the present invention comprises the following steps:

[0013] After the processing of solid wood furniture, a large amount of shavings and sawdust are produced, some of which are dry and can be directly treated, but some of them are mixed with water to form waste water, and this part of waste water is introduced into the sedimentation tank for sedimentation; the inclination angle is 50 degrees, and the distance between the bars is 20mm. The grid and filter screen remove most of the suspended solids; the effluent enters the regulating tank, and the regulating tank reacts with lime substances and acid substances to form flocs. During the formation of flocs and after flocs are formed, impurity particles are entrained and adsorbed ; Settling and filtering through the effluent of the regulating tank; the effluent is sent to the plate and frame filter press through the feeding pump, the f...

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PUM

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Abstract

The invention relates to a wood processing wastewater treatment method which belongs to the field of industrial wastewater treatment. The method comprises the steps that: wood processing wastewater is precipitated in a precipitation tank; the wastewater is delivered through a grating and a filter net, such that most of suspended solids are removed; discharged water is delivered into a regulation tank; with actions of lime substances and acidic substances in the regulation tank, flocculate is formed, wherein impurity particles are entrained and adsorbed during and after the flocculate forming process; water discharged from the regulation tank is precipitated and filtered; discharged water is delivered to a press filter through a material pump, and most of tiny impurities are removed; discharged water is pumped into a biological filter tank and is delivered from bottom to top, wherein a filter material is waste fiber balls; discharged water is pumped into a water storage tank, and can be directly recycled. Filter cakes obtained by press-filtration has low water content. The treatment method has the advantages of low operation cost, large treatment capacity, high corrosion resistance, and environment-friendliness. With the combined multi-level biochemical treatment method, the wastewater can be thoroughly purified, and part of the wood in the wastewater can be recycled. Therefore, an environment protection requirement is satisfied.

Description

technical field [0001] The invention relates to a wood processing wastewater treatment method, which belongs to the field of industrial wastewater treatment. Background technique [0002] The wastewater produced by wood processing has some biochemical substances, and the composition of the impurities contained in the wastewater is relatively complex, so it is difficult for ordinary wastewater treatment methods to treat this type of wastewater. Generally, a fixed pool is used to filter sewage, but the amount of wastewater treated by this wastewater device is small, and when there is a lot of sludge, the liquid is not easy to separate from the solid. Contents of the invention [0003] In view of the defects in the existing technology, the purpose of the patent of the present invention is to provide a combined multi-stage biochemical treatment method, which can thoroughly purify wastewater and reuse part of the wood in wastewater, which meets the requirements of environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/26
Inventor 张成巍宋俊洲
Owner 大连格兰清水环境工程有限公司