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Preparation process of multifunctional flyash sewage treatment material

A technology of sewage treatment and fly ash, which is applied in the direction of adsorption water/sewage treatment, flocculation/sedimentation water/sewage treatment, ceramic products, etc. Wide application and other issues to achieve the effect of reducing sludge volume, improving disposal capacity and reducing consumption

Inactive Publication Date: 2005-01-05
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difficulty of separating fly ash from treated water and the disposal of saturated adsorbed ash restrict the wide application of fly ash in sewage treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 700 grams of fly ash, 10 grams each of polyaluminum chloride and polysilicate sodium, 40 grams of ferric chloride, 120 grams of cement clinker, 120 grams of 50-mesh spun yarn, mix well, and then add 200 grams of 2% carboxymethyl Cellulose gel state water, mixed evenly, put into a rectangular module with a thickness of 5cm, flattened, heated to 160°C, kept warm for 0.5 hours, cooled to 20°C, air-dried, watered and maintained for 10 hours, air-dried, crushed, sieved share the product.

Embodiment 2

[0018] Take 560 grams of fly ash, 80 grams of aluminum sulfate, 50 grams of polyferric sulfate, 20 grams of sodium polysilicate, 40 grams of ferric chloride, 200 grams of cement, 50 grams of 40 mesh spun yarn, mix well, and then add 200 grams of 3% Starch gel state water, mixed evenly, put into a rectangular module with a thickness of 10cm, flattened, heated to 80°C, kept warm for 1.5 hours, cooled to 30°C, air-dried, watered and maintained for 4 hours, air-dried, crushed, sieved get the product.

Embodiment 3

[0020] Get 450 grams of fly ash, 100 grams of alum, 20 grams of polyferric sulfate, 30 grams of sodium polysilicate, 30 grams of ferric chloride, 30 grams of potassium permanganate, 190 grams of cement clinker, 150 grams of 30 mesh spun yarn, mix Mix well, then add 180g of 3% starch gel state water, mix well, put it into a rectangular module with a thickness of 7cm, flatten it, heat it to 110°C, keep it warm for 1.2 hours, cool it to 26°C, air dry, and water for 6 hour, air-dried, crushed, and sieved to obtain the product.

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PUM

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Abstract

The invention discloses a multifunctional powder coal ash sewage processing material preparing method, and its preparing courses: in weight share, taking powder coal ash 45-70 shares, aluminium salt, ferrite and sodium polysilicate altogether 2-15 shares, oxidant 4-10 shares, cement or cement clinker 10-20 shares, and 20-50 eye spun yarn 5-15 shares, uniformly mixing them, then adding gelatinous water in 10-20% of the total mass of the above matters, uniformly mixing, placing in a 5-10 cm thick rectangular module, planishing, heating to 80 deg.C-160 deg.C, preserving heat for 0.5-1.5 h, cooling to 20-30 deg.C, airing, watering and curing for 4-10 h, airing, crushing, and screening to obtain products. The processing material is integrated with the functions of flocculating, absorbing, chemically degrading, etc in one, it is a microporous cellular solid particle, has adsorbility, flocculability and oxidizing property, not only enhancing absorbing ability of powder coal ash but also able to remarkably reduce dosage of flocculating agent.

Description

technical field [0001] The invention belongs to the field of sewage treatment materials and relates to a preparation method of multifunctional fly ash sewage treatment materials. Background technique [0002] Fly ash is the flying dust collected from the exhaust windows of coal-fired power plants, which is an industrial waste. Fly ash has a large specific surface area and has solid adsorbent properties. Therefore, the adsorption properties of fly ash can be directly used to treat papermaking wastewater, printing and dyeing wastewater, coking wastewater, electroplating wastewater, and coal mine wastewater. It can effectively reduce the COD value and chroma in wastewater, and can reduce the content of volatile phenols and content of heavy metals. However, the difficulty of separating fly ash from treated water and the disposal of saturated adsorbed ash restrict the wide application of fly ash in sewage treatment. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C04B38/00
Inventor 阮湘元彭敏
Owner DONGGUAN UNIV OF TECH
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