Comprehensive doskin sewage treatment equipment

Abstract

The invention discloses comprehensive doskin sewage treatment equipment which comprises an air flotation purification tank, a sand filtering tank, an acid precipitation overflowing tank, an ultrafiltration device, a reverse osmosis device, an evaporation concentration device and a drying device, wherein the air flotation purification tank, the sand filtering tank and the acid precipitation overflowing tank are sequentially connected; an overflowing clear liquid of the acid precipitation overflowing tank is fed into the ultrafiltration device through a pipeline; a sedimentation concentrated liquid of the acid precipitation overflowing tank is fed into the reverse osmosis device through a pipeline; the clear liquid of the ultrafiltration device is discharged; filter residues of the ultrafiltration device is fed into the evaporation concentration device; the evaporation concentration device is connected with the reverse osmosis device; and the reverse osmosis device is connected with thedrying device. The equipment is reasonable in structure, sericin can be recycled, the sericin recycling rate is up to 75% or greater, meanwhile, the content of the sericin in the sewage and the COD (chemical oxygen demand) value can be greatly reduced, national second-level discharge standards can be met, both the problem of doskin sewage can be solved and resource recycling and utilization can beachieved, and a good use effect can be achieved.

Description

technical field [0001] The invention relates to the field of silk brocade production equipment, in particular to a comprehensive treatment equipment for silk brocade sewage. Background technique [0002] my country is a big producer of silk brocade, and the main raw material for silk brocade is silk. Silk is an extremely important natural protein fiber, mainly composed of silk fibroin and sericin. The quality of scouring is directly related to the final quality of the product, and scouring is also the most polluting link in the silk processing process. As we all know, silk degumming wastewater contains a large amount of sericin, which belongs to high-concentration organic wastewater. So far, most silk factories treat these wastewater together with printing and dyeing wastewater, or discharge them directly without treatment, causing great environmental pollution and Energy waste. Therefore, there is a need for a device that can be used for the comprehensive treatment of Si...

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Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a comprehensive treatment equipment for silk brocade sewage, which adopts supporting equipment for professionally treating silk brocade comprehensive wastewater, and through multi-level sewage treatment and effective recovery of sericin, solves the problems in the prior art. There is no special equipment for Sijin sewage treatment, and a large amount of waste water is directly discharged, causing great environmental pollution and energy waste.

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