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Sequencing batch type dry anaerobic digestion device of kitchen wastes

A dry anaerobic and kitchen waste technology, applied in the field of waste recycling technology and biomass energy, can solve the problems of poor control performance and easy acidification in the anaerobic process, achieve convenient control, improve operability and efficiency Effect

Inactive Publication Date: 2016-08-24
BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE
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Problems solved by technology

In view of the disadvantages of poor control performance of the existing reactors and easy acidification of the anaerobic process, it is necessary to design a more effective and intelligent sequencing batch dry anaerobic digestion reactor

Method used

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  • Sequencing batch type dry anaerobic digestion device of kitchen wastes

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Embodiment 1

[0032] See figure 1 .

[0033] A sequential batch dry anaerobic digestion device for food waste, comprising a dry anaerobic digestion reactor (1), an inlet and outlet container (2), a sealing cover (3), a biogas slurry collection chamber (4), and a perforated plate (5), biogas residue sampling port (6), insulation layer (7), heating layer (8), biogas slurry discharge pipe (9), biogas outlet (10), sensor interface (11), safety valve (12) , gas flow meter (13); the biogas slurry return system consists of a biogas slurry storage tank (14), a biogas slurry return pump (15), a biogas slurry return pipeline (16), a biogas slurry sampling port (17), a liquid flow meter ( 18), alkalinity dosing device (19), insulation layer (7), heating layer (8); monitoring control system is made up of temperature sensor (20), pH sensor (22), ORP sensor (21), relay (23 ), PLC controller (24), PLC automatic control system and on-site touch screen (25), etc.

[0034] The dry-type anaerobic digestion...

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Abstract

The invention discloses a sequencing batch type dry anaerobic digestion device of kitchen wastes. The device of the invention comprises a reactor system, a biogas slurry reflux system and a monitoring control system. The reactor system is composed of a dry anaerobic digestion reactor, a feeding and discharging container, a seal cover, a biogas slurry collecting chamber, a perforated plate, a biogas residue sampling port, a thermal insulation layer, a heating layer, a biogas slurry discharge pipe, a biogas outlet, a sensor interface, a safety valve and a gas flowmeter. The biogas slurry reflux system is composed of a biogas slurry storage tank, a biogas slurry reflux pump, a biogas slurry reflux pipeline, a biogas slurry sampling port, a fluid flowmeter, an alkalinity filling injector, a thermal insulation layer and a heating layer. The monitoring control system is composed of a temperature sensor, a pH sensor, an ORP sensor, a relay, a PLC controller, a PLC automatic control system and a field touch panel. The device of the invention is convenient to manipulate. In addition, multiple reactors are in parallel operation. By respectively setting operation strategies, maneuverability and efficiency of the sequencing batch type dry anaerobic digestion device are improved.

Description

technical field [0001] The invention relates to a batch-type dry-type anaerobic digestion device for kitchen waste, which belongs to the technical fields of waste recycling technology and biomass energy technology. Background technique [0002] With the rapid development of my country's catering industry, a large amount of kitchen waste is produced every year. According to statistics, the daily output of kitchen waste in Beijing alone reached 1,600 tons in 2008, which has brought enormous pressure to the municipal and sanitation departments. The hogwash and gutter oil incidents that resulted from this not only endangered the health of citizens, but also caused a waste of resources. If the kitchen waste can be treated well and used as one of the sources of urban resources, turning waste into treasure will surely bring good economic and social benefits. [0003] Food waste contains all kinds of balanced nutrients needed by anaerobic microorganisms, and it is a more appropriat...

Claims

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Application Information

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IPC IPC(8): C12M1/38C12M1/36C12M1/34C12M1/16C12M1/107
CPCY02E50/30
Inventor 刘建伟葛振
Owner BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE
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