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Reclaiming treatment method for hydraulic loom waste water

A wastewater treatment and water-jet loom technology, which is applied in the textile industry wastewater treatment, flotation water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of low textile wastewater reuse rate and improve mutual contact Opportunity, Response Effect Obvious Effect

Active Publication Date: 2010-10-13
ZHEJIANG TAIHUA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the low recycling rate of textile wastewater and the problem of Cl in the prior art - The accumulated problems, the present invention provides a method for the advanced treatment of water jet loom wastewater, improving the quality of reused water, and increasing the reuse rate

Method used

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  • Reclaiming treatment method for hydraulic loom waste water
  • Reclaiming treatment method for hydraulic loom waste water
  • Reclaiming treatment method for hydraulic loom waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 1 , After the water jet loom wastewater is regulated, it is lifted to the reaction tank by the lift pump, and then it is treated with chemical dosing coagulation and pressurized dissolved air flotation. The wastewater coagulation dosing is 9.5-10% PAC, and the dosage is 0.3-0.35‰ of the wastewater volume. Air flotation pool. In the air flotation tank, the chemical slurry such as PVA, surfactant and oil in the wastewater are removed, the separated sludge enters the sludge thickening tank, and the remaining part enters the biological tank for treatment. After coagulation reaction + pressurized dissolved air flotation, the effluent COD removal rate is more than 75%, the turbidity removal rate is more than 85%, and the Cl -The concentration increases by about 10%. Biological treatment is carried out on the remaining organic matter in the wastewater in the biological tank. After the sedimentation mud water is separated, the sludge enters the sludge concent...

Embodiment 2

[0034] The determination of the concentration and dosage of main medicaments is shown in the following groups:

[0035] Table 2-1 The relationship between the concentration and dosage of chemicals and water quality

[0036]

[0037] refer to figure 1 , figure 2 , After the water jet loom wastewater is regulated, it is lifted to the reaction tank by the lift pump, and then it is treated with chemical dosing coagulation and pressurized dissolved air flotation. Through the observation and analysis of the field experiment 2.1-2.7 group, when the coagulant Al 2 (SO 4 ) 3 18H 2 When the concentration of O is low (less than 7.5%), its dosage will also increase, which will increase the input of dosing equipment. Not only that, the coagulation reaction effect of wastewater is not ideal, and the removal rate of suspended solids and colloids is not high. When coagulant Al 2 (SO 4 ) 3 18H 2 When the concentration of O is high (greater than 8%), a large dosage will increase ...

Embodiment 3

[0042] The determination of the concentration and dosage of main medicaments is shown in the following groups:

[0043] Table 3-1 The relationship between the concentration and dosage of chemicals and water quality

[0044] group

Aluminum sulfate concentration

Aluminum sulfate dosage

Carbide slag concentration

Calcium carbide slag dosage

Turbidity removal

pH

3.1

6.0％

0.5‰

1.0％

3‰

50％

7.3

3.2

6.5％

0.4‰

1.5％

2‰

50％

7.2

3.3

7.0％

0.3‰

1.5％

1‰

50％

7.0

[0045] group

Aluminum sulfate concentration

Aluminum sulfate dosage

Carbide slag concentration

Calcium carbide slag dosage

Turbidity removal

pH

3.4

7.5％

0.2‰

2.0％

0.8‰

55％

7.5

3.5

8.0％

0.15‰

2.5％

0.3‰

50％

7.1

3.6

8.5％

0.10‰

3.0％

0.1‰

40％

...

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Abstract

The invention provides a method for treating and reutilizing hydraulic loom wastewater, comprising the following steps of: (1) lifting the adjusted wastewater to a reaction tank, performing coagulation and floatation, feeding the separated sludge into a sludge concentration tank, and feeding the rest parts into a biological tank; (2) performing biological treatment and sedimentation of wastewater, feeding into a horizontal sedimentation tank together with supplementing water, adding chemicals, adjusting pH value, coagulating, settling, and disinfecting the effluent into a clean water tank; (3) filtering the disinfected effluent with a mechanical filter, and performing sodium ion exchange; and (4) delivering the treated process water into hydraulic looms in a workshop. The inventive methodavoids harmful substances entering recycled water in chemicals addition and ion exchange steps by using wastewater treatment and recycled water reusing combined techniques, so as to improve recycled water treatment effect and process water quality, thereby improving recycled water reuse ratio.

Description

technical field [0001] The invention relates to a method for treating and recycling textile wastewater, in particular to a method for treating and recycling wastewater from a water jet loom. Background technique [0002] The textile industry is one of the traditional pillar industries in my country. According to the industry, it is mainly divided into textile industry, printing and dyeing industry, chemical fiber manufacturing industry, garment industry and textile special equipment manufacturing industry. The water jet loom is a kind of machine commonly used in the textile industry. During the working process, a certain amount of clean water is needed for jet driving. The daily water consumption of each loom is 1-2 tons, and the discharged waste water mainly contains grease, Colloids, fine suspended particles, chemical slurry, color, microorganisms, heavy metals and organic matter, etc. Generally, the concentration of COD in wastewater is 150-500mg / l, and its biodegradabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/24C02F1/50C02F1/42C02F103/30
Inventor 周雪锋李宏亮沈林汪月明金慧芬
Owner ZHEJIANG TAIHUA NEW MATERIAL
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