Device and method for printing and dyeing wastewater treatment

A technology for printing and dyeing wastewater and treatment methods, which is applied in the direction of textile industry wastewater treatment, multi-stage water treatment, chemical instruments and methods, etc., can solve problems such as poor treatment effect, and achieve reliable operation of the device, good treatment effect, and economical rationality Effect

Pending Publication Date: 2019-02-22
JIANGSU OPEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above technologies can remove suspended pollutants, organic pollutants and COD in wastewater to a certain extent cr , NH 3 -N, SS and total phosphorus and pollutants that are difficult to biochemically in wastewater, but the treatment effect is not good

Method used

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  • Device and method for printing and dyeing wastewater treatment
  • Device and method for printing and dyeing wastewater treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A printing and dyeing wastewater treatment device, such as figure 1 , including grids, water collection wells, regulating tanks, UASB reaction tanks, sedimentation tanks, SBR reaction tanks and clean water tanks connected in sequence. The clean water tanks are connected to the regulating tanks through transcendent pipes, and the sedimentation tanks and SBR reaction tanks are connected to the sludge thickening tanks. , the sludge thickening tank is connected with the sludge dewatering machine and the regulating tank respectively, and the sludge dewatering machine is connected with the regulating tank.

[0018] in:

[0019] The grid gap of the grid is 5mm;

[0020] The UASB reaction tank contains a large number of hydrolytic bacteria and acid-producing bacteria. The pool is equipped with a combined filler, and the microorganisms grow on the filler. The number of UASB reaction tanks is 2, used in series, and a three-phase separator is installed in the tank;

[0021] The ...

Embodiment 2

[0032] A printing and dyeing wastewater treatment device, such as figure 1 , including grids, water collection wells, UASB reaction tanks, sedimentation tanks, SBR reaction tanks and clear water tanks connected in sequence.

[0033] The above-mentioned device is used to treat a certain printing and dyeing wastewater, and the water volume of the wastewater is 1200m 3 / d, the relevant index of water quality is: COD cr 1560mg / L, BOD 5 600mg / L, SS 280mg / L, chroma 300, ammonia nitrogen 30mg / L.

[0034] The printing and dyeing wastewater is passed through the grid to remove large floating matter and suspended particles; then it enters the UASB reaction pool through the water collection well to improve the biodegradability of organic matter and remove some organic pollutants and chroma. The residence time is 12h; the UASB reaction pool The effluent enters the sedimentation tank to further remove suspended substances; the effluent of the sedimentation tank enters the SBR reaction...

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PUM

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Abstract

The invention discloses a device and method for printing and dyeing wastewater treatment, and belongs to the technical field of wastewater treatment. The device comprises a grilling, a water collecting well, an adjusting pool, a UASB reaction pool, a sedimentation pool, an SBR reaction pool and a clear water pool which are sequentially connected; the sedimentation pool and the SBR reaction pool are connected with a sludge concentration pool; the sludge concentration pool is connected with a sludge dewatering machine and the adjusting pool; and the sludge dewatering machine is connected with the adjusting pool. According to the device and the method, a UASB and SBR combined process method is adopted, treated wastewater meets the requirements of the 'discharge standard of water pollutants for dyeing and finishing of textile industry in Jiangsu province' (DB32/670-2004), the treatment effect is good, the device reliably operates, and economical and reasonable effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a device and method for treating printing and dyeing wastewater. Background technique [0002] Printing and dyeing wastewater is wastewater discharged from printing and dyeing factories that mainly process cotton, hemp, chemical fibers and their blended products. Printing and dyeing wastewater has a large amount of water, and each ton of textile printing and dyeing consumes 100 to 200 tons of water, of which 80 to 90% become wastewater. Wastewater contains dyes, pastes, additives, oil agents, acids and alkalis, fiber impurities, sand substances, Inorganic salts, etc., have the characteristics of large water volume, high concentration of organic matter, deep color, high concentration of suspended matter, high alkalinity, and large fluctuations in water quality. focus on. How to effectively and stably treat this kind of wastewater has certain difficulties...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F11/122C02F103/30
CPCC02F9/00C02F11/122C02F3/30C02F3/34C02F1/001C02F2301/08C02F2103/30C02F2001/007
Inventor 张晓程婷
Owner JIANGSU OPEN UNIV
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