Novel printing and dyeing wastewater treatment agent and preparation method thereof

A technology for printing and dyeing wastewater and treatment agent, which is used in energy wastewater treatment, textile industry wastewater treatment, adsorption water/sewage treatment, etc. , to achieve the effect of excellent effect, high efficiency and strong process operability

Inactive Publication Date: 2011-08-31
上海图和环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment of printing and dyeing wastewater with flocculants is still effective for sedimentation of suspended solids, but the effect of reducing COD, BOD and chroma is not ideal, especially the deodorization effect is even worse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Add 25g of copper sulfate and 12g of protective agent polyvinylpyrrolidone into 1000ml of ethylene glycol as a solvent, stir and heat to 70°C until dissolved; after the solution system is clear and transparent, add 5g of nano-titanium dioxide and 20g of activated carbon particles in turn, and then ultrasonic Stir for about 40 minutes; add 0.1 g of reducing agent sodium borohydride into the reaction system, and continue to stir for about 20 minutes; filter the solution to remove the activated carbon layer and dry it, and recover the filtrate for later use;

Embodiment 2

[0024] Example 2: Add 25g of copper sulfate and 20g of protective agent polyvinylpyrrolidone into 1000ml of ethylene glycol as a solvent, stir and heat to 70°C until dissolved; after the solution system is clear and transparent, add 20g of nano-titanium dioxide and 20g of activated carbon particles in turn, and then ultrasonic Stir for about 40 minutes; add 0.2 g of sodium borohydride as a reducing agent into the reaction system, and continue stirring for about 20 minutes; filter the solution to remove the activated carbon layer and dry it, and recover the filtrate for later use;

Embodiment 3

[0025] Example 3: Add 20g of copper acetate and 15g of protective agent polyvinylpyrrolidone into 1000ml of ethylene glycol as a solvent, stir and heat to 60°C until dissolved; after the solution system is clear and transparent, add 8g of nano-titanium dioxide and 30g of activated carbon particles in turn, and then ultrasonic Stir for about 50 minutes; add 0.1 g of sodium borohydride as a reducing agent into the reaction system, and continue to stir for about 20 minutes; filter the solution, take out the activated carbon layer and dry it, and use the filtrate for later use;

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Abstract

The invention discloses a novel printing and dyeing wastewater treatment agent and a preparation method thereof, and in particular relates to a printing and dyeing wastewater treatment agent which uses a sunlight photocatalysis technology effectively and a preparation method thereof. The preparation method specifically comprises the steps of: (1) adding copper salt and a protective agent into a dissolvent, and heating to be 50-70DEG C during a stirring till to dissolve; (2) completely dissolving the copper salt and the protective agent, adding nano-titanium dioxide and active carbon in sequece, and ultrasonically stirring for about 30-60min; (3) adding a reducing agent into a reaction system, and reacting for 20-30min by continuously stirring; and (4) filtering the solution, and withdrawing active carbon to obtain the novel printing and dyeing wastewater treatment agent. The treatment agent is functional powder which takes the active carbon as a carrier and has the multifunction of sterilization and deodorization due to the absorption of the carrier and the high-efficiency photocatalysis of a receptor; and the treatment of printing and dyeing wastewater has the functions of effectively improving the removing rate to COD value (chemical oxygen demand), BOD (biochemical oxygen demand) and chroma, sterilizing and deodorizing, so that the invention is extremely high in efficiency.

Description

Technical field [0001] The invention discloses a novel printing and dyeing wastewater treatment agent and a preparation method thereof, and particularly relates to a printing and dyeing wastewater treatment agent and a preparation method thereof utilizing sunlight photocatalysis technology. Background technique [0002] Printing and dyeing wastewater has complex components, dark color, and large discharge volume. It has always been one of the most difficult industrial wastewater at home and abroad. People spend a lot of material and financial resources to solve this difficult problem for this reason. The current treatment methods for printing and dyeing sewage mainly include biochemical methods, electrolysis methods, and photocatalytic methods. The biochemical method occupies a large area, has a narrow scope of application, and the effect is not ideal; although the electrolysis method is better than the biochemical method, it consumes a lot of energy and is difficult to pop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/30C02F1/50C02F103/30
CPCY02W10/37
Inventor 余晓锦
Owner 上海图和环保材料科技有限公司
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