Comprehensive processing technology of organic wastes

A technology for organic waste and comprehensive treatment, applied in the treatment of biological organic parts, organic fertilizers, waste fuels, etc., can solve the problems of waste, inappropriateness, and blocked fertilizer sales, and achieve comprehensive benefits, nutrient diversification, and fertilizer efficiency. Effect

Active Publication Date: 2010-02-03
YUNNAN KUNMING SHIPBUILDING DESIGN & RESEARCH INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The organic waste is directly processed by the traditional composting process. Due to the problems of low maturity of the output fertilizer, low content of organic matter, and low content of N, P, and K, this type of fertilizer is not suitable for use in farmland. It is only suitable for "Soil improver" or "soil conditioner" is used in greening, vegetation restoration, land reclamation, desertification land control, etc., which seriously hinders the sales of fertilizers for a long time, and most of the composting projects cannot make ends meet and are in a state of suspension , resulting in a great waste of

Method used

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  • Comprehensive processing technology of organic wastes

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Effect test

Embodiment 1

[0032] As shown in the figure, the process of the present invention includes processes such as material preparation, pretreatment, mixing, anaerobic fermentation, biogas utilization, and biogas residue making fertilizer.

[0033] After the organic waste is collected, it is placed in different storage tanks according to the different characteristics of the incoming materials; then the solid organic waste is crushed to a particle size of ≤30mm. It is transported to the mixing tank and mixed with process water and anaerobic digested sludge from the sewage treatment plant to produce a mixed material with a TS concentration of 35% and a temperature of 30°C to 40°C.

[0034] The pretreated material is fed into the forced feeding device by means of a feeder or pump, and the inoculum is added to the fermentation device at the same time. The process unit is a continuous processing unit, which feeds the pretreated material into the fermentation device regularly and quantitatively, and a...

Embodiment 2

[0044] After the organic waste is collected, it is placed in different storage tanks according to the different characteristics of the incoming materials; then the solid organic waste is crushed to a particle size of ≤30mm. It is transported to the mixing tank and mixed with process water, anaerobic digested sludge from sewage treatment plant and recycled biogas residue to produce a mixed material with a TS concentration of 32% and a temperature of 30°C to 40°C.

[0045] The pretreated material is fed into the forced feeding device by means of a feeder or pump, and the inoculum is added to the fermentation device at the same time. The process unit is a continuous processing unit, which feeds the pretreated material into the fermentation device regularly and quantitatively, and all these processes are controlled by an automatic operating system.

[0046] The high-temperature dry anaerobic fermentation process of organic waste is carried out in an anaerobic fermentation device, ...

Embodiment 3

[0050] After the organic waste is collected, it is placed in different storage pools according to the different characteristics of the incoming materials; then the solid organic waste is crushed to a particle size of ≤30mm. After 4 days of stacking and retting, the different incoming materials are transported to It is transported to the mixing tank and mixed with process water, septic tank bottom sludge, sewer bottom sludge and recycled biogas residue to produce a mixed material with a TS concentration of 30% and a temperature of 30°C to 40°C.

[0051] The pretreated material is fed into the forced feeding device by means of a feeder or pump, and the inoculum is added to the fermentation device at the same time. The process unit is a continuous processing unit, which feeds the pretreated material into the fermentation device regularly and quantitatively, and all these processes are controlled by an automatic operating system.

[0052] The high-temperature dry anaerobic ferment...

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Abstract

The invention provides a comprehensive processing technology of organic wastes, belonging to the technical field of environmental protection, and in particular relates to resourcing comprehensive processing technology of organic wastes. The invention comprises the following steps: a. preparing materials: placing liquid or solid organic wastes into different storing tanks; b. pretreating: crashingthe organic wastes to particles with the granuality of being equal to or less than 30 mm, conveying the well-crashed materials into a stackretting tank for stackretting; c. mixing and matching variousorganic wastes and process water, wherein, the carbon nitrogen ratio (C / N) of the materials is 20-30:1, and the concentration of TS is 30%-35%; d. adding the inoculum, adopting high temperature dry anaerobic fermentation to carry out anaerobic fermentation on pretreated materials; and e. manufacturing from the biogas residues generated in step d into efficient multifungus composite ecological organic fertilizer, backflowing the generated biogas liquid to adjust the state of the anaerobic fermentation system or ensure the biogas liquid to enter the aerobic composting process flow, and introducing the generated biogas to a thermoelectricity cogeneration unit to provide electrical energy and thermal energy required by the process system. In the invention, composite microorganism agent and biogas residues and other base stocks are adopted for composite preparation, thus greatly improving fertilizer efficiency, lowering cost, having effects of diversification of nutrients, stable fertilizer efficiency and non pollution, and being suitable for being applied for various crops.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a comprehensive treatment process for resource utilization of organic waste. Background technique [0002] Pollutants such as organic domestic waste, kitchen waste, leftovers from food processing, organic sludge, livestock and poultry manure, and agricultural organic waste have high organic matter content and can be collectively referred to as organic waste. [0003] At present, wet anaerobic fermentation is mainly used in China to treat organic waste. The biogas generated is used as fuel, and the fermentation product is made into organic compound fertilizer. However, the TS of wet anaerobic fermentation is low, generally below 20%. A large amount of water needs to be added to dilute the material during pre-treatment, biogas residue must be dehydrated during post-treatment, and a large amount of biogas slurry must be treated by a supporting sewage tr...

Claims

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Application Information

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IPC IPC(8): B09B3/00C05F5/00C05F7/00C05F17/00C05F9/04
CPCY02A40/20Y02E50/30Y02W30/40
Inventor 李涛唐向阳张勇高国涛唐蓉孙旭海
Owner YUNNAN KUNMING SHIPBUILDING DESIGN & RESEARCH INSTITUTE
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