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Reuse equipment and method for wickerwork printing and dyeing wastewater treatment

A technology for printing and dyeing wastewater and willow weaving, which is applied in processing wastewater treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. Effect

Pending Publication Date: 2018-08-07
LINYI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the high content of suspended solids and organic dyes in willow printing and dyeing wastewater, the coagulation-sedimentation-filtration method is used to treat it, and it is expected to be reused in the printing and dyeing process, but the development of this kind of wastewater treatment process has not been reported

Method used

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  • Reuse equipment and method for wickerwork printing and dyeing wastewater treatment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The wastewater quality of the willow printing and dyeing workshop of a willow handicraft company is: COD: 3240~4150mg / L; light transmittance: 0.01%~0.02%; SS: 1130.3~1330.7mg / L.

[0048] Apply the willow printing and dyeing wastewater treatment and reuse method of the present invention, comprising the following steps:

[0049] (1) The waste water produced in the willow printing and dyeing process flows into the waste water pool 1, and the impurities with a larger proportion in the waste water settle to the bottom of the pool;

[0050] (2) A lift pump 2 is installed in the waste water tank, and the waste water enters the coagulation sedimentation tank 3 after being lifted by the lift pump 2. The flocs with large size and specific gravity are formed through the process of flocculant complexation, net capture and sweeping, and settle to the bottom of the tank by gravity during the sedimentation process;

[0051]The coagulant and coagulant aid are ferrous sulfate, calcium ...

Embodiment 2

[0061] The wastewater quality of the willow printing and dyeing workshop of a willow handicraft company is: COD: 3350-4010mg / L; light transmittance:

[0062] 0.01%~0.03%; SS: 1020.3~1130.7mg / L.

[0063] Apply the willow printing and dyeing wastewater treatment and reuse method of the present invention, comprising the following steps:

[0064] (1) The waste water produced in the willow printing and dyeing process flows into the waste water pool 1, and the debris with a larger proportion in the waste water settles to the bottom of the pool;

[0065] (2) A lift pump 2 is installed in the waste water tank, and the waste water enters the coagulation sedimentation tank 3 after being lifted by the lift pump 2. The flocs with large size and specific gravity are formed through the process of flocculant complexation, net capture and sweeping, and settle to the bottom of the tank by gravity during the sedimentation process;

[0066] The coagulant and coagulant aid are ferrous sulfate, ...

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Abstract

The invention relates to reuse equipment and a method for wickerwork printing and dyeing wastewater treatment. The equipment comprises a wastewater pond, a coagulative precipitation tank, a fiber rotary disc filter pond and a clean water pond, wherein wastewater generated in a wickerwork printing and dyeing process flows into the wastewater pond, a lifting pump is arranged in the wastewater pond,the wastewater is pumped into the coagulative precipitation tank through the lifting pump, a coagulant and a coagulant aid are input in the coagulative precipitation tank, and after flocculation and precipitation reactions, the precipitate enters a sludge dewatering equipment for compressing, dehydrating and transferring the precipitate; the precipitated supernate enters the fiber rotary disc filter pond through a decanter, the filter rotary disc filter pond intercepts suspended solids in the supernate under the filtration action of filter cloth, filtered water enters the clean water pond, andthe filtered water enters the wickerwork printing and dyeing process to be reused.

Description

technical field [0001] The invention relates to equipment and a method for treating and reusing wicker printing and dyeing wastewater, belonging to the field of sewage treatment. Background technique [0002] Willow weaving is one of the traditional folk handicrafts in China. Shandong, Hubei and Anhui are the three major willow weaving production bases in my country, and they are also the pillar industries and foreign exchange earning projects of some counties and districts in these places. [0003] The unorganized discharge of wastewater generated in the willow production process has caused serious water pollution in some areas. The waste water mainly comes from the waste water containing natural impurities, fat, starch and other organic matter produced in the process of wicker washing, cooking, rinsing, bleaching, washing and dyeing. Among them, a large amount of printing and dyeing wastewater is produced in the printing and dyeing process, which contains a large amount o...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F103/26
CPCC02F9/00C02F1/001C02F1/56C02F1/5236C02F2103/26C02F2001/007
Inventor 王昌稳徐琳张鹏
Owner LINYI UNIVERSITY
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