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Process of treating municipal sludge with compound gel synergistic with biotechnology and using municipal sludge in resource mode

A composite gel and biological treatment technology, which is applied in biological sludge treatment, biological organic part treatment, gel preparation, etc., can solve the problems of long time, waste of gel materials, high reaction temperature, etc., to reduce moisture content, The effect of increasing fertilizer efficiency and simple preparation method

Active Publication Date: 2016-06-01
ZHUHAI GUOJIA NEW MATERIAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the gel materials of the prior art have better adsorption capacity, there are disadvantages such as higher reaction temperature and longer time for preparation.
In addition, there is no report on the use of gel materials for sludge treatment and the realization of turning waste into treasure in the prior art

Method used

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  • Process of treating municipal sludge with compound gel synergistic with biotechnology and using municipal sludge in resource mode

Examples

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Effect test

Embodiment 1

[0029] Embodiment one composite gel

[0030] Weigh 3 parts by weight of sodium hydroxide and 12 parts by weight of triethanolamine in a reactor, add magnetized water to prepare an alkali solution with a sodium hydroxide concentration of 1 mol / L, add 32 parts by weight of acrylic acid, stirred to obtain a neutralization solution; sequentially add 45 parts by weight of bisacrylamide, 32 parts by weight of bentonite and ammonium persulfate of 80 parts by weight to the neutralization solution, and stir to obtain a solution to be polymerized; The polymerization solution was polymerized at 60° C. for 2 hours, washed with deionized water, and dried to obtain a composite gel. The magnetized water is obtained by magnetizing deionized water through NdFeB magnets, and the magnetic induction of the NdFeB magnets is 5000 Gauss.

Embodiment 2

[0031] Example two composite gel

[0032] Weigh 2 parts by weight of sodium hydroxide and 10 parts by weight of triethanolamine in a reactor, add magnetized water to prepare an alkali solution with a sodium hydroxide concentration of 1 mol / L, and add 28 parts by weight of acrylic acid, stirred to obtain a neutralization solution; sequentially add 42 parts by weight of bisacrylamide, 28 parts by weight of bentonite and ammonium persulfate of 76 parts by weight to the neutralization solution, stir to obtain a solution to be polymerized; The polymerization solution was polymerized at 55° C. for 2 hours, washed with deionized water, and dried to obtain a composite gel. The magnetized water is obtained by magnetizing deionized water through an NdFeB magnet, and the magnetic induction of the NdFeB magnet is 7000 Gauss.

Embodiment 3

[0035] The preparation of embodiment three slow-release fertilizers

[0036] Collect 1000kg of sludge (moisture content 98.4%), add 150kg of straw, and mix well to obtain a sludge mixture (water content 65.2%); add 0.1kg of cellulolytic bacteria to the sludge mixture, stir evenly, and store at 55°C Carry out a fermentation under the conditions for 8 days to obtain a fermentation product (moisture content 43.7%); carry out earthworm composting on the fermentation product, and obtain a compost product after 10 days of composting; sieve and recover the large particle auxiliary materials and earthworms in the compost product, To obtain coarse fertilizer, add 5kg of the composite gel prepared in Example 1, mix well, and obtain slow-release fertilizer. During the fermentation process, according to the temperature and oxygen concentration, turning over or forced ventilation is carried out. The oxygen concentration of the heap for the first fermentation is 5%, and the oxygen concent...

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Abstract

The invention provides a process of treating municipal sludge with compound gel synergistic with biotechnology and using the municipal sludge in a resource mode. A preparing method of the compound gel includes the following steps that A, mixed alkalis are weighed and put in a reactor, magnetized water is added to prepare a mixed alkali solution, acrylic acid is added on the water bath condition and stirred to obtain a neutralized solution; B, a crosslinking agent, bentonite and an initiating agent are sequentially added into the neutralized solution and stirred to obtain a to-be-polymerized solution; C, the to-be-polymerized solution is subjected to a polymerization reaction, washed and dried to obtain the compound gel material. The process belongs to the technical field of environmental protection, and the provided compound gel has the advantages of good adsorptive performance, large adsorptive capacity and the like. According to the process of treating the municipal sludge with the compound gel synergistic with biotechnology and using the municipal sludge in the resource mode, the sludge is used as a raw material for preparing slow-release fertilizer, waste is turned into wealth, and the prepared slow-release fertilizer has the advantages of improving soil physical and chemical properties, preserving moisture and fertility, promoting plant growth and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a composite gel and composite gel synergistic biological treatment of municipal sludge and a resource utilization process. Background technique [0002] With the development of social economy, the amount of urban sewage continues to increase. Sludge is a direct product of sewage treatment. The composition of sludge is very complex, including silt, fiber, organic matter, heavy metals and other components. According to statistics, my country's annual sludge output has exceeded 30 million tons. Sludge has the characteristics of high water content (often as high as 95%), high content of organic matter, and easy to rot and smell. The current sludge treatment mainly includes landfill, incineration, composting and other methods. Incineration can reduce the volume of sludge, but it requires high energy consumption and will lead to secondary pollution. [0...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01J20/28B01J13/00C02F11/02C02F11/04C05G3/00C05F17/00
CPCB01J13/0065B01J20/12B01J20/261B01J20/264B01J20/267B01J20/28047B01J2220/46B01J2220/4806B01J2220/4812C02F11/02C02F11/04C02F2303/06C05F7/00C05F17/05C05G3/00C05F11/08Y02W10/20Y02W30/40
Inventor 王海波吉广林李华章王中元陈作桥周维维
Owner ZHUHAI GUOJIA NEW MATERIAL
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