Method for synergetic drying pyrolysis of sludge and medicine residues

A technology of medicine dregs and sludge, which is applied in chemical instruments and methods, sludge treatment, biological sludge treatment, etc., can solve the problem of increasing treatment costs, being easily affected by environmental changes, and prolonging the synergistic treatment process of sludge and medicine dregs route and other issues to achieve the effect of high energy saving and environmental protection benefits

Pending Publication Date: 2020-01-24
ADVANCED FOR MATERIALS & EQUIP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, patent ZL 201510046168.0 discloses a collaborative sludge aerobic fermentation process after biological drying of traditional Chinese medicine dregs. First, specific fungi are added to the traditional Chinese medicine dregs for fermentation, drying, and mixed fermentation with sludge. On the one hand, it increases the process flow. The cumbersome degree prolongs the process route of sludge and medicinal dregs co-processing and increases the processing cost. Although part of the fermentation cycle is shortened, the fermentation time still needs to last for about 12 days, and it is impossible to achieve continuous sludge and medicinal dregs. Large-scale processing and susceptible to environmental changes during fermentation

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  • Method for synergetic drying pyrolysis of sludge and medicine residues

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Effect test

Embodiment 1

[0026] Combine below figure 1 Be explained. figure 1 It is a process flow diagram of a method for synergistic drying and pyrolysis of sludge and medicinal residues.

[0027] In this embodiment, the drying treatment of sludge and medicinal residues is realized through the synergistic drying and pyrolysis of sludge and medicinal residues, which is divided into four steps: component compounding, specific resistance adjustment, cooperative dehydration, and high-temperature pyrolysis.

[0028] Component compounding: According to the characteristics of the water content, sand content, and organic matter content of the municipal sludge, the pH of the sludge is adjusted to 6.5-7.5 to provide the best conditions for the enzymatic reaction of the enzyme contained in the dregs. The medicinal dregs whose rate and composition are basically stable are added to the sludge according to a certain proportion and fully mixed, mechanically stirred for 2-3 hours, and the residual bactericidal fun...

Embodiment 2

[0033] According to the method of synergistic drying and pyrolysis treatment of sludge and medicinal residues provided in the examples, take 4kg of sludge from a sewage treatment plant, add NaOH and stir evenly, adjust its pH to about 7.0, and then add 1kg of Coptis chinensis to the sludge The medicinal dregs were mixed and stirred for 2 hours, and the trace bactericidal components contained in the coptis rhizome dregs were used to complete the preliminary killing of microorganisms in the sludge and promote the release of intracellular fluid. After the stirring is completed, add 180g of polyferric sulfate to the mixed components and continue to stir evenly and continue to aerate for 2 hours. Add 100g of carbon powder to the mixture of mud and medicinal residues and continue to stir evenly to absorb a small amount of residual polysaccharides, proteins and other substances in the components that may affect the specific resistance of the mixed components.

[0034] The mixed compo...

Embodiment 3

[0038]Take 3kg of sludge from a sewage treatment plant, add NaOH and stir evenly, adjust its pH to about 7.0, then add 2kg of Coptis chinensis dregs to the sludge and mix and stir for 2 hours. After the stirring is completed, add 180g of polyferric sulfate to the sludge, continue to stir evenly and continue to aerate for 2 hours. Add 100g of carbon powder to the mixture and continue to stir evenly to absorb a small amount of residual polysaccharides, proteins and other substances that may affect the specific resistance of the sludge.

[0039] The sludge that has completed the above treatment steps is introduced into the plate and frame constant pressure filtration experimental device for plate and frame filter press operation. The filtrate obtained by the plate and frame filter press operation is transferred to a conditioning tank, mixed with the supernatant obtained in the standing step, and after conditioning, is transferred to an anaerobic fermentation tank for anaerobic fe...

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Abstract

The invention discloses a method for synergetic drying pyrolysis of sludge and medicine residues. The method comprises four steps of composition compounding, specific resistance regulation, synergeticdehydration and high-temperature pyrolysis. In a mode that traditional Chinese medicine residues or non-medicinal parts of traditional Chinese medicine plants of a specific ratio are put into sludge,the specific resistance of components to be treated and the ratio of sand in components to be pyrolyzed can be reduced, breakage of microbial cells in the sludge can be promoted through sterilizationcomponents in the traditional Chinese medicine residues, the dehydration efficiency of components to be treated can be improved, and the yield of pyrolysis ash of raw materials of a unit mass can bereduced. By adopting the method disclosed by the invention, synergetic pyrolysis of the sludge and the medicine residues is achieved, the treatment difficulty of single components of sludge and medicine residues can be reduced, and the method has a wide application prospect in synergetic pyrolysis treatment on organic solid wastes with high water contents.

Description

technical field [0001] The invention belongs to the field of sludge treatment, and in particular relates to a method for synergistic drying and pyrolysis of sludge and medicinal dregs. Background technique [0002] Sludge and traditional Chinese medicine slag are two typical organic solid wastes with high moisture content and high specific resistance. In the process of organic solid waste treatment, there are long-term difficulties in dehydration, long traditional composting treatment time, low degree of reduction, and low resource utilization. Energy recovery is difficult and other issues. [0003] Sludge contains more organic components with high calorific value, but at the same time it is mixed with more microorganisms and sediment. The presence of microbial cells increases the content of surface adsorbed water and internal bound water in the sludge, thus increasing the difficulty of sludge dewatering. Generally, flocculants need to be added and carried out through compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C02F11/143C02F11/122C02F11/10C02F11/04
CPCC10G1/00C02F11/10C02F11/14C02F11/122C02F11/04Y02W10/40
Inventor 周智吴贤波黄升雄罗伟戴煜周强
Owner ADVANCED FOR MATERIALS & EQUIP
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