Comprehensive utilization method of fly ash in wastewater treatment and soil conditioner preparation

A soil conditioner and a technology for treating wastewater, which is applied in the field of comprehensive utilization of resources to achieve the effects of improving drainage quality, reducing costs, and improving air permeability

Inactive Publication Date: 2017-05-31
章誉之
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the 1990s in my country, only a few units have been producing, and now they are gradually developing and paying attention, but there is still a big gap between manufacturing and use compared with foreign advanced levels

Method used

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  • Comprehensive utilization method of fly ash in wastewater treatment and soil conditioner preparation
  • Comprehensive utilization method of fly ash in wastewater treatment and soil conditioner preparation
  • Comprehensive utilization method of fly ash in wastewater treatment and soil conditioner preparation

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Embodiment 1

[0072] Embodiment 1, a kind of comprehensive utilization method of fly ash in treating waste water and preparing soil conditioner, carries out following steps successively:

[0073] 1), weigh 500 kg of fly ash, add 100m 3 In the biochemically treated fosfomycin calcium production wastewater (before MBR membrane filtration), the stirring reaction was carried out for 2 hours to obtain a suspension composed of sewage and fly ash;

[0074]Fly ash is obtained from the flue gas of coal-fired boilers in thermal power plants through dry dust removal. It is a porous honeycomb structure with a bulk density of 0.963g / cm3, a particle size of 1-260μm (average particle size is about 28μm), and a specific surface area of ​​18m 2 / g, loss on drying is less than 1.8%, the main element composition (mass percentage) except oxygen is as follows: silicon 16.84%, aluminum 12.91%, iron 6.27%, calcium 16.24%, potassium 2.16%, magnesium 0.92%, phosphorus 0.11% , carbon 2.16%, provided by Zhejiang Day...

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Abstract

The invention discloses a comprehensive utilization method of fly ash in wastewater treatment and soil conditioner preparation. The method comprises the following sequential steps: adding fly ash into sewage after biochemical treatment and stirring; performing filter pressing of the obtained suspension by a plate-and-frame filter press to obtain a fly ash filter cake I and sewage I after adsorption treatment; drying the fly ash filter cake I, grinding and sieving to obtain the treated fly ash II; and adding wood vinegar and potassium sulfate into the treated fly ash II, stirring and mixing uniformly, granulating and drying to obtain a soil conditioner. The sewage I after adsorption treatment is filtered by an MBR membrane; the sewage after the membrane filtration can reach the discharge standard.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of resources, and relates to a comprehensive utilization technology of fly ash, in particular to a comprehensive utilization method of fly ash in treating waste water and preparing soil improver. Background technique [0002] Fosfomycin calcium is used for simple lower urinary tract infection and intestinal infection (including bacillary dysentery) caused by sensitive bacteria, and can also be used in combination with other antibacterial drugs to treat severe infections caused by sensitive bacteria, such as sepsis , peritonitis, osteomyelitis, etc., white crystalline powder, tasteless, slightly soluble in water. Almost insoluble in methanol, insoluble in acetone, chloroform, ether, benzene. Fosfomycin calcium is used for human medicine in China, and the market demand has grown rapidly in recent years. [0003] The production process of fosfomycin calcium is simple, but a large amount of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C02F1/28C02F9/14C02F101/30C05G3/80
CPCC02F1/281C02F3/1268C02F2101/30C05D1/02C05G3/80C05G5/12C05D9/00C05F11/00
Inventor 章誉之
Owner 章誉之
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