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High-efficient composite powder-shaped sewage treating agent for desizing waste water and preparation method thereof

A sewage treatment agent and desizing wastewater technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem that the removal rate can only reach 60-70%, and the recycling The efficiency can only reach 60-70%, and the requirements of environmental protection and recycling cannot be met, so as to achieve the effect of excellent coagulation performance, high recovery rate and convenient production

Inactive Publication Date: 2017-01-11
WUHU YANGZHAN NEW MATERIAL TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Desizing wastewater is the wastewater produced by removing the size of the fabric with chemicals, usually containing a large amount of PVA (polyvinyl alcohol), the composition of this wastewater is complex, and contains 1-10g / l of PVA, COD Concentration reaches 1×10 4 -100×10 4 mg / L, the chroma is more than 400 times. Since PVA is a non-ionic organic polymer, the charge generated by the usual sewage treatment agent containing basic aluminum chloride (PAC) is difficult to adsorb it, and the removal rate of COD can only reach 60- 70%, the recovery rate of PVA can only reach 60-70%, which cannot meet the requirements of environmental protection and recycling

Method used

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  • High-efficient composite powder-shaped sewage treating agent for desizing waste water and preparation method thereof
  • High-efficient composite powder-shaped sewage treating agent for desizing waste water and preparation method thereof
  • High-efficient composite powder-shaped sewage treating agent for desizing waste water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix 7 parts by weight of 80 mesh tartaric acid and 1 part by weight of 80 mesh ursodeoxycholic acid for 50 minutes, then add 1 part by weight of 80 mesh 2-chloromandelic acid, mix for 50 minutes, and then add 60 parts by weight of 80 mesh calcium sulfate, Mix for 50 minutes, then add 10 parts by weight of 80 mesh magnesium carbonate, mix for 40 minutes, then add 10 parts by weight of 80 mesh calcium carbonate and mix for 40 minutes, then add 10 parts by weight of 80 mesh ferric chloride, mix for 40 minutes, and add 10 Mix 40 parts by weight of 80 mesh calcium oxide, then add 10 parts by weight of 80 mesh borax, and mix for 120 minutes.

Embodiment 2

[0021] Mix 7 parts by weight of 200 mesh tartaric acid and 1.5 parts by weight of 200 mesh ursodeoxycholic acid for 90 minutes, then add 1.7 parts by weight of 180 mesh 2-chloromandelic acid, mix for 90 minutes, and then add 70 parts by weight of 200 mesh calcium sulfate, Mix for 90 minutes, then add 20 parts by weight of 200 mesh magnesium carbonate, mix for 50 minutes, then add 20 parts by weight of 200 mesh calcium carbonate and mix for 50 minutes, then add 20 parts by weight of 200 mesh ferric chloride, mix for 50 minutes, and add 20 Mix 200 parts by weight of calcium oxide for 50 minutes, then add 20 parts by weight of 200-mesh borax, and mix for 130 minutes.

Embodiment 3

[0023] Mix 8 parts by weight of 400 mesh tartaric acid and 2 parts by weight of 400 mesh ursodeoxycholic acid for 120 minutes, then add 2 parts by weight of 400 mesh 2-chloromandelic acid, mix for 120 minutes, and then add 70 parts by weight of 400 mesh calcium sulfate, Mix for 120 minutes, then add 15 parts by weight of 400 mesh magnesium carbonate, mix for 60 minutes, then add 20 parts by weight of 400 mesh calcium carbonate and mix for 60 minutes, then add 20 parts by weight of 400 mesh ferric chloride, mix for 60 minutes, and add 20 The weight parts of 400 mesh calcium oxide are mixed for 60 minutes, and then 16 weight parts of 400 mesh borax are added and mixed for 150 minutes.

[0024] The technical indicators of Examples 1-3 are shown in Table 1:

[0025] Table 1:

[0026] Example 1 Example 2 Example 3 Density g / ㎝ 3 (20℃)

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Abstract

The invention discloses a high-efficient composite powder-shaped sewage treating agent for desizing waste water and preparation method of the high-efficient composite powder-shaped sewage treating agent. The sewage treating agent comprises tartaric acid, ursodesoxycholic acid, 2- chloromandelic acid, calcium sulfate, magnesium carbonate, calcium carbonate, ferric trichloride, calcium oxide, sodium borate. The method is to orderly and evenly mix above matters. Compared with the prior art, the treating agent treats the desizing sewage containing 1-10 g / l PVA, wherein the COD (chemical oxygen demand) concentration of the desizing sewage reaches 5x104-10x104 mg / L, and chromaticity is 400 times; the removal rate reaches 80-85%, and recycle rate of PVA is 85-90%, and the chromaticity is 100 times below; the composite powder-shaped sewage treating agent is featured by wide adaptive temperature scale, good treatment effect, high recycle rate, and obvious decoloration.

Description

Technical field [0001] The invention belongs to a sewage treatment agent and a preparation method thereof, and particularly belongs to a treatment agent for PVA desizing wastewater and a preparation method thereof. Background technique [0002] Desizing wastewater is the wastewater produced by removing the slurry carried by the fabric with chemical agents. It usually contains a large amount of PVA (polyvinyl alcohol). The composition of this kind of wastewater is complex and contains 1-10g / l PVA and COD. Concentration reaches 1×10 4 -100×10 4 mg / L, the chromaticity is more than 400 times. Because PVA is a non-ionic organic polymer, it is difficult to adsorb the charge generated by the sewage treatment agent containing basic aluminum chloride (PAC), and the removal rate of COD can only reach 60- 70%, the recovery rate of PVA can only reach 60-70%, which fails to meet the requirements of environmental protection and recycling. Summary of the invention [0003] The technical problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F103/30C02F101/34
CPCC02F1/5236C02F1/50C02F1/5245C02F1/54C02F5/105C02F2101/34C02F2103/30
Inventor 吴长应
Owner WUHU YANGZHAN NEW MATERIAL TECH SERVICE CO LTD
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