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Treatment method of vinylon water-soluble waste water

A treatment method, the technology of vinylon, applied in the field of vinylon water-soluble wastewater treatment, can solve the problems of affecting the activity of aerobic microorganisms, unsatisfactory treatment effect, increased viscosity of wastewater, etc., achieving remarkable treatment effect, easy solid-liquid separation, The effect of reducing the concentration of organic matter

Inactive Publication Date: 2014-03-05
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, a large amount of high-concentration refractory organic wastewater (B / C<0.1) will be produced in the process of dissolving vinylon in water, which contributes a lot to the COD of wastewater, and it is easy to generate foam in the biological treatment process, resulting in increased viscosity of wastewater and affecting The activity of aerobic microorganisms, so the existing conventional wastewater treatment systems are not ideal for its treatment effect
[0004] Judging from the current research status, domestic and foreign technologies for the treatment of vinylon wastewater mainly include: biodegradation of highly efficient degrading bacteria, ultrafiltration treatment technology, chemical coagulation, etc., but the treatment effects are average, which is the current industry wastewater treatment field. a puzzle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Vinylon water-soluble wastewater raw water COD Cr The average concentration is 18800mg / L. First, use 3mol / L sodium hydroxide solution to adjust the pH value of the wastewater to 10.5, and add liquid polyferrous chloride with a concentration volume ratio of 1% and attapulgite with a mass concentration of 0.2%. Stir quickly for 2 minutes at a stirring speed of 250rpm, then stir slowly for 1min at a stirring speed of 80rpm, then add a saturated solution of borax with a concentration volume ratio of 5%, and stir continuously until a large number of colloidal lumps appear in the solution, and then add a concentration volume The ratio is 1% polyferrous chloride for secondary coagulation, continuous stirring for 1min, and then standing for 30min;

[0024] (2) The solid-liquid separation of the colloidal lumps and waste water generated by the reaction is carried out with a non-woven filter bag with a pore size of 2 mm. After measurement, the treated water COD Cr The averag...

Embodiment 2

[0026] (1) Vinylon water-soluble wastewater raw water COD Cr The average concentration is 18800mg / L. First, use 4mol / L sodium hydroxide solution to adjust the pH value of the wastewater to 10. Add liquid polyferrous chloride with a concentration volume ratio of 1% and kaolin with a mass concentration of 0.1%. Stir for 3 minutes at a stirring speed of 300rpm, then stir slowly for 0.5min at a stirring speed of 60rpm, then add a saturated solution of borax with a concentration-volume ratio of 5%, and continue stirring until a large number of colloidal lumps appear in the solution, and then add a concentration-volume ratio Carry out secondary coagulation for 1.5% polyferrous chloride, stir continuously for 2 minutes, and then stand still for 60 minutes;

[0027] (2) The solid-liquid separation of the colloidal lumps and waste water generated by the reaction is carried out with a non-woven filter bag with a pore size of 3 mm. After measurement, the treated water COD Cr The average...

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Abstract

The invention relates a treatment method of vinylon water-soluble waste water. The method comprises the following steps of adjusting the pH of the vinylon water-soluble waste water to be more than or equal to 10 by utilizing alkaline liquid, adding a polyferric sulfate coagulant and natural clay minerals, stirring, adding a borax saturated solution, continuously stirring until a great amount of colloid is formed, adding the polyferric sulfate coagulant to carry out the secondary coagulation, continuously stirring for 1 to 2 minutes, standing, and separating solid from liquid. The treatment method is simple, easy to implement, high in reaction speed, remarkable in treatment effect, easy for separating solid and liquid and good in operability, organic matters in the high-concentration vinylon water-soluble waste water are high-efficiently eliminated by utilizing the flocculation of the polyferric sulfate coagulant and the adsorption effect of the natural clay minerals as well as the crosslink salting-out effect of the borax, so that not only can the load on the subsequent biochemical treatment process be alleviated, but also the separated colloid can be used as a fuel to be combusted.

Description

technical field [0001] The invention belongs to the field of organic wastewater treatment, in particular to a method for treating vinylon water-soluble wastewater. Background technique [0002] Embroidery lace is an important national traditional handicraft in my country, which can be divided into hand embroidery lace and machine embroidery lace. Compared with machine-embroidered lace, hand-embroidered lace has a more three-dimensional effect, especially for lace with more complex patterns, more colors, and longer flower loops, but its production efficiency is low, the embroidery patterns are often uneven, and there are differences between embroidery very big. The production efficiency of machine embroidery lace is high, and different embroidery base fabrics can be used according to different requirements, so as to produce different types of lace, such as water-soluble lace, mesh lace, polyester cotton lace, etc. Water-soluble lace is one of the major categories. Water-sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 高品薛罡刘振鸿刘亚男
Owner DONGHUA UNIV
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