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Conductive water treatment filler

A water treatment, conductive technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc. Easy to process, simple to use, and the effect of reducing the concentration of organic matter

Inactive Publication Date: 2007-05-23
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In industrial applications, the specific surface area that flat electrodes can provide generally does not exceed 20m 2 / m 3 , and large-area flat-plate electrodes have high technical difficulties in production, installation, and maintenance, resulting in high costs, and it is actually impossible to apply them on a large scale in water treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Preparation of conductive water treatment filler

[0037] Main raw materials: commercially available φ15cm elastic packing (Shanghai Petrochemical Waters Environmental Protection Factory), water-based polyacrylate coating (Tianjin Qunhui Sealing Material Factory)

[0038]Conductive coating formula: graphite powder 2kg, water 5kg, water-based polyacrylate coating 5kg, sodium dodecylsulfonate 0.5kg

[0039] Mix the above formula materials evenly, impregnate the surface of the elastic filler, and dry at 80 degrees for 2 hours to get the finished product.

Embodiment 2

[0040] Example 2: Preparation of conductive water treatment filler

[0041] Main raw materials: stepped ring plastic packing produced by Jiangxi Quanxing Chemical Packing Co., Ltd., water-based polyurethane coating produced by Wenzhou Huanyu Company

[0042] Conductive coating formula: graphite powder 1kg, carbon fiber short filament 1kg, water 3kg, water-based polyurethane coating 5kg, sodium dodecylsulfonate 0.5kg

[0043] Mix the above formula materials evenly, spray on the surface of the chemical filler, and dry at 80 degrees for 2 hours to get the finished product.

Embodiment 3

[0044] Example 3: Preparation of conductive water treatment filler

[0045] Main raw materials: φ15cm elastic filler produced by Shanghai Petrochemical Waters Environmental Protection Plant, polyethylene formal acetaldehyde coating produced by Shanghai Shunqiang Biotechnology Co., Ltd.

[0046] Conductive coating formula: acetylene carbon black 1kg, polyethylene formal coating 3kg, dimethylformamide 6kg

[0047] Mix the above formula materials evenly, brush on the surface of the elastic filler, dry at 80°C for 1 hour, then heat up to 110°C and heat cure for 2 hours to get the finished product.

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PUM

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Abstract

There's provided an electric-conductible water-treatment filling on which there's electric-conductible paint. The filling can be elastic filling, combined filling, soft filling, semi-soft filling or chemical engineering filling; the mentioned electric-conductible paint is latex with carbon powder as the main electric-conducting material. The beneficial effects of the invention include the following aspects: (1) short membrane-form time, it only needs 3-14d to form good microbial film; (2) it can degrade the organics quickly: the degrading rate of aromatic hydrocarbon is faster than rate of the optimized obligate degrading bacteria; the nitro and nitroso can be anti-nitrated with no need to add carbon source so that it decreases the density of organics in discharged sewage which is helpful to improve the water quality; (3) it's convenient and easier to get electric-conductible fillings through smearing.

Description

(1) Technical field [0001] The invention relates to a new type of water treatment filler, which obtains electrical conductivity by coating conductive paint on ordinary water treatment fillers, and is mainly used in the field of biochemical water treatment, such as surface water biological pretreatment, wastewater biological contact oxidation treatment, etc. , It can also be used as an electrode for the treatment of electrochemical reactors and heavy metal wastewater. (2) Background technology [0002] Biological treatment is the main method for removing organic matter, nitrogen, phosphorus and other pollutants in water treatment, and has been widely used in water supply and wastewater treatment. Filling the filler in the biochemical reactor, the growth of microorganisms on the surface of the water treatment filler can increase the residence time of the microorganisms in the reactor, enhance the stability of the system, increase the biological concentration, and thus improve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 许炉生
Owner ZHEJIANG UNIV OF TECH
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