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Composite powdery sewage treatment agent for PVA-containing desizing waste water and preparation method of composite powdery sewage treatment agent

A sewage treatment agent, desizing wastewater technology, applied in water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., the recovery rate can only reach 60%. -70%, the removal rate can only reach 60-70%, and the requirements of environmental protection and recycling are not met, and the effects of excellent coagulation performance, high recovery rate and easy production are achieved.

Inactive Publication Date: 2017-01-25
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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  • Composite powdery sewage treatment agent for PVA-containing desizing waste water and preparation method of composite powdery sewage treatment agent
  • Composite powdery sewage treatment agent for PVA-containing desizing waste water and preparation method of composite powdery sewage treatment agent
  • Composite powdery sewage treatment agent for PVA-containing desizing waste water and preparation method of composite powdery sewage treatment agent

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Mix 7 parts by weight of 80 mesh tartaric acid with 1 weight part of 80 mesh 2-phenylthio-5-propionylphenylacetic acid for 50 minutes, then add 1 weight part of 80 mesh α-ketovaline calcium salt, and mix for 50 minutes , 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 calcium carbonate Ferric chloride, mixed for 40 minutes, then added 10 parts by weight of 80-mesh calcium oxide and mixed for 40 minutes, then added 10 parts by weight of 80-mesh borax, and mixed for 120 minutes.

Embodiment 2

[0021] Mix 7 parts by weight of 200 mesh tartaric acid with 1.6 parts by weight of 180 mesh 2-phenylthio-5-propionylphenylacetic acid for 90 minutes, then add 1.5 parts by weight of 160 mesh α-ketovaline calcium salt, and mix for 90 minutes , 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 calcium carbonate Ferric chloride, mixed for 50 minutes, then added 20 parts by weight of 200-mesh calcium oxide and mixed for 50 minutes, then added 20 parts by weight of 200-mesh borax, and mixed for 130 minutes.

Embodiment 3

[0023] Mix 8 parts by weight of 400 mesh tartaric acid and 2 parts by weight of 400 mesh 2-phenylthio-5-propionylphenylacetic acid for 120 minutes, then add 2 parts by weight of 400 mesh α-ketovaline calcium salt, and mix for 120 minutes , 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 three Ferric chloride, mixed for 60 minutes, then added 20 parts by weight of 400 mesh calcium oxide and mixed for 60 minutes, then added 16 parts by weight of borax of 400 mesh, and mixed for 150 minutes.

[0024] The technical index of embodiment 1-3 is as shown in table 1:

[0025] Table 1:

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

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Abstract

The invention discloses a composite powdery sewage treatment agent for PVA-containing desizing waste water and a preparation method of the composite powdery sewage treatment agent. The sewage treatment agent comprises tartaric acid, calcium sulfate, magnesium carbonate, calcium carbonate, ferric trichloride, calcium oxide, borax, calcium alpha-ketovaline and 2-phenylthio-5-propionylphenylacetic acid. The preparation method includes the step of mixing the materials uniformly sequentially. Compared with the prior art, the composite powdery sewage treatment agent has the advantages that, to the desizing waste water which contains 1-10g / l of PVA, with COD (chemical oxygen demand) concentration reaching 1*104-5*104mg / L and chromaticity equal to 400 times, the PVA removal rate is up to 90-95%, the recovery rate of PVA reaches 90-95%, and the chromaticity is below than 100 times, and further has the advantages of wide temperature adaptive range, good treatment effect, high recovery rate and remarkable decolorization effect.

Description

technical field [0001] The invention belongs to a sewage treatment agent and a preparation method thereof, in particular 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 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 chromaticity 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%, does not reach the requirement of environmental protection and recovery. Contents of the invention [0003] The technical problem to be solved by the inventi...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F5/08C02F1/50C08J11/06C02F103/30C02F101/34C08L29/04
CPCC02F1/50C02F1/52C02F5/08C02F2101/34C02F2103/30C02F2303/04C02F2303/08C08J11/06C08J2329/04Y02W30/62
Inventor 吴长应
Owner WUHU YANGZHAN NEW MATERIAL TECH SERVICE CO LTD
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