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Down feather industrial wastewater high efficiency recycling method and device thereof

A technology for industrial wastewater and down, applied in chemical instruments and methods, water/sewage treatment, special compound water treatment, etc., can solve the problems of difficult recycling of down washing wastewater, low wastewater recovery rate, and poor reuse water quality. , to achieve the effect of solving the difficulty of wastewater discharge, high wastewater reuse rate, and good reuse water quality

Inactive Publication Date: 2018-04-10
SOUTHEAST UNIV CHENGXIAN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for the reuse of down industrial wastewater on the basis of the prior art, which can solve the problems of difficulty in the treatment and reuse of down washing wastewater, low recovery rate of wastewater, poor and unstable reuse water quality

Method used

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  • Down feather industrial wastewater high efficiency recycling method and device thereof
  • Down feather industrial wastewater high efficiency recycling method and device thereof
  • Down feather industrial wastewater high efficiency recycling method and device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Down production wastewater from a down factory in Anhui is reused as water for down washing. The flow chart of the method is as follows figure 1 . After traditional biochemical treatment, the wastewater from down production reaches the relevant pollutant discharge limit required in the national standard "Discharge Standard of Water Pollutants for Down Industry (GB21901-2016)". Waste water volume is 100m 3 / h, through the pretreatment system to remove large particles of suspended solids and some organic matter, the pretreatment adopts dissolved air flotation machine and filter cloth filter, and the slag produced by pretreatment is processed by plate and frame filter. The filter cloth filter is a mobile vertical sheet type, the filter cloth pore size is about 10μm, the operation is fully automatic, and it can filter continuously. The removal rate of suspended solids in wastewater in the pretreatment section is greater than 82%. The effluent from the pretreatment sectio...

Embodiment 2

[0039] The advanced treatment of down production wastewater from a Jiangsu Down Co., Ltd. is used for down washing production water. The flow chart of the method is as follows figure 1. After being treated by a biochemical system, the wastewater from down production has reached the pollutant discharge limit required by the country's latest "Discharge Standard of Water Pollutants for Down Industry (GB21901-2016)". The volume of biochemical tail water is 160m 3 / h, the wastewater passes through the dissolved air flotation machine and the fiber ball filter in the pretreatment section to remove large particles of suspended solids and some organic matter, and the slag produced by the pretreatment is processed through the plate and frame filter. Among them, the fiber ball filter is a steel circular tank, which adopts pressure filtration. The fiber ball filter material is made of polyester fiber into a flat ellipsoid, the filtration speed is 40m / h, and air-water backwashing is used...

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Abstract

The invention relates to a down feather industrial wastewater high efficiency recycling method and a device thereof. The device comprises a pretreatment system, an ultrafiltration system, a decolouring desalting system, and a concentrated water treatment system. According to the down feather industrial wastewater high efficiency recycling method, down feather industrial wastewater is subjected tobiochemical treatment, is introduced into the pretreatment system to remove a part of organic matters and large particular suspended matters; water discharged out from the pretreatment system is introduced into the ultrafiltration system to remove bacteria, Escherichia coli, and solid suspension matters in wastewater, so that the turbidity, the suspended matter content, and the colloid substance content are reduced, and the pollution index is reduced; water discharged out from the ultrafiltration system is introduced into the decolouring desalting system so as to remove color matters and saltsin water, and water discharged out from the ultrafiltration system is introduced into a recombined system for recycling; concentrated water from the decolouring desalting system is subjected to highgrade oxidation degradation for up-to-standard discharge. The down feather industrial wastewater high efficiency recycling method and the device are capable of achieving 70 to 90% wastewater recyclingrate, and better recycled water quality, are adopted in water washing of down feather, is capable of improving down feather quality obviously, solving problems in the prior art that enterprise waterusing amount is large and wastewater discharge difficulty, and possesses great importance in enterprise development and water resource protection.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method for efficiently reusing down industrial wastewater; in addition, the invention also relates to a device for efficiently recycling down industrial wastewater. Background technique [0002] The down products industry is a sunrise industry. my country is the largest producer and exporter of down products in the world, and it is also the largest consumer of down products in the world. However, in the process of raw down wool processing (washing down), a large amount of clean water resources are consumed, and highly polluted wastewater is produced at the same time. Therefore, the treatment and reuse of industrial wastewater from washing down is of great significance to protecting the water environment and saving water resources. [0003] During the production process of down processing, the raw wool (duck feather, goose feather) needs to be washed. The washing includes in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F9/06
CPCC02F1/001C02F1/24C02F1/38C02F1/441C02F1/444C02F1/4672C02F1/722C02F1/725C02F1/78C02F9/00C02F2201/782C02F2305/026
Inventor 朱清
Owner SOUTHEAST UNIV CHENGXIAN COLLEGE