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Comprehensive resource treatment process of tobacco wastes

A technology for comprehensive treatment of tobacco waste, applied in the field of environmental protection, can solve the problems of low N, P, K content, low fertilizer maturity, low organic matter content, etc., and achieves a small application range, stable fertilizer efficiency, and diversified nutrients. Effect

Inactive Publication Date: 2012-05-09
YUNNAN KUNMING SHIPBUILDING DESIGN & RESEARCH INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional composting process is mainly used in China to treat tobacco waste. Due to the problems of low maturity of the output fertilizer, incomplete sterilization, low organic matter content, and low N, P, and K contents, this type of fertilizer is not suitable. When used in farmland, it is only suitable as a "soil improver" or "soil conditioner" for greening, vegetation restoration, land reclamation, desertification land control, etc., so that the price of fertilizer is low and the market is not smooth
The composting process emits a large amount of polluting gases, causing environmental pollution
The vast majority of composting projects cannot make ends meet and are in a state of disuse, causing great waste

Method used

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Experimental program
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Effect test

Embodiment 1

[0031] After the tobacco waste is collected, it is placed in different storage pools according to the different characteristics of the incoming materials; then the solid tobacco waste is crushed to a particle size of ≤30mm, and after 3 days of stacking, the different incoming materials are transported through the conveyor 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.

[0032] 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.

[0033] The high-temperature dry anaerobic fermentatio...

Embodiment 2

[0043] After the tobacco waste is collected, it is placed in different storage tanks according to the different characteristics of the incoming materials; then the solid tobacco 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.

[0044] 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.

[0045] The high-temperature dry anaerobic fermentation process of tobacco waste is carried out in an anaerobic fermentation device, ...

Embodiment 3

[0049] After the tobacco waste is collected, it is placed in different storage tanks according to the different characteristics of the incoming materials; then the solid tobacco waste is crushed to a particle size of ≤30mm. 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.

[0050] 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.

[0051] The high-temperature dry anaerobic fermentation process of tobacco waste is carried out in an anaerobic fermentation device, and th...

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Abstract

The invention discloses a comprehensive resource treatment process of tobacco wastes, belonging to the technical field of environment protection, and particularly relating to the comprehensive resource treatment process of tobacco wastes. The process comprises the steps of: a, preparing materials; b, pre-treating; c, mixing various types of tobacco wastes with process water; d, adding inoculums; and e, producing biogas residues generated in the step d into efficient multi-strain compound ecological fertilizer, enabling generated biogas slurry to flow back for state regulation of an anaerobic fermentation system or for entering an aerobic composting process flow, and providing electric energies and heat energies needed by a process system by generated sewage gas through a heat-electricity co-production device. TS of the material used in the invention can reach 30%-40%; the comprehensive resource treatment process of tobacco wastes is high in load, short in fermentation period, high in gas production rate, steady in quality, simple and convenient in pre-treatment and post-treatment of products; meanwhile, the comprehensive resource treatment process of tobacco wastes can remarkably reduce consumption of water and energies, decrease operation cost, and realize resource, harmless and reduced treatment of the tobacco wastes.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a comprehensive treatment process for recycling tobacco waste. Background technique [0002] my country's tobacco planting area and output rank first in the world, and tobacco planting and processing play an important role in the development of the national economy. my country is a big tobacco producing country, with an annual output of 4.5-5 million tons of tobacco leaves, of which 900,000-1.5 million tons of tobacco waste cannot be used in the cigarette industry, causing environmental pollution. Therefore, strengthening the comprehensive utilization of tobacco waste can not only make this part of waste Become a valuable resource, and can increase the economic income of tobacco farmers, and promote the healthy development of the "two tobacco" industries. [0003] At present, the traditional composting process is mainly used to treat tobacco waste in ...

Claims

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Application Information

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IPC IPC(8): C05F5/00C12M1/107
CPCY02E50/343Y02A40/20Y02E50/30Y02W30/40
Inventor 李涛张勇孙旭海唐向阳杨斌高国涛李雪松房镇
Owner YUNNAN KUNMING SHIPBUILDING DESIGN & RESEARCH INSTITUTE
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