Device and method for treating leather processing wastewater

Abstract

The invention discloses a fur processing wastewater treatment device, which comprises a grid well, a dyeing water collection well, a dyeing reaction tank, a primary sedimentation tank, a hydrolysis tank, an oxidation tank, a secondary sedimentation tank, a secondary reaction tank, a final sedimentation tank, and a discharge well , a sludge thickening tank, a chrome liquid collection well, a chrome liquid reaction tank and a chrome mud concentration tank, the dyeing water collection well is connected to the dyeing wastewater output end, the chromium liquid water collection well is connected to the chromium-containing wastewater output end, and at the dyeing wastewater output end Grille wells are arranged between the dyeing water collection well, between the chromium waste water output end and the chromium liquid water collection well, the output end of the dyeing water collection well is connected to the input end of the dyeing reaction pool, and the output end of the dyeing reaction pool is connected to The input end of the primary sedimentation tank and the output end of the chromium liquid collection well are connected with the input end of the chromium liquid reaction tank. Through the combination of various treatment processes, the present invention can ensure that the effluent is discharged up to the standard, and the present invention has simple process, convenient operation, thorough treatment, energy saving and low cost.

Description

technical field [0001] The invention relates to the technical equipment field of wastewater treatment, in particular to a fur processing wastewater treatment device and method. Background technique [0002] The leather industry has made great contributions to the development of the national economy, but it has also caused very serious pollution to the environment. Most of the processes of tanning and fur processing are completed in water, which pollutes water bodies very seriously and consumes a lot of water. With the global water resource crisis becoming more and more serious, my country's environmental protection policies are becoming more and more strict, and people's awareness of environmental protection is gradually increasing. my country's leather and fur industries are facing a severe environmental situation. Environmental problems, especially water pollution, have become constraints. The bottleneck of the development of the tanning and fur processing industry is a pr...

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Problems solved by technology

[0012] According to the above description, we can know that although the fur production industry wastewater treatment process has been relatively mature, there are still many problems in the field of fur production and processing wastewater treatment, and it is difficult to use only a single treatment process. If the effluent meets the discharge standards, the existing processes must be integrated, and a combination of multiple processes can be used to meet the discharge standards, and even turn waste into treasure to achieve the purpose of comprehensive utilization of resources

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