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Forced ventilation horizontal flow biological drying reaction device and method

A technology of forced ventilation and biological drying, applied in chemical instruments and methods, dehydration/drying/concentrated sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of temperature drop of pile materials and meet manual requirements less, improve the efficiency of bio-drying of piles, and shorten the time of bio-drying

Active Publication Date: 2021-04-02
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a forced ventilation horizontal flow biological drying reaction device and its drying method to solve the problems of rapid drop in the temperature of the pile material caused by excessive ventilation, overcooling of the pile body and the early end of the first three composting stages

Method used

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  • Forced ventilation horizontal flow biological drying reaction device and method
  • Forced ventilation horizontal flow biological drying reaction device and method
  • Forced ventilation horizontal flow biological drying reaction device and method

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Embodiment 1

[0079] See figure 2 . The forced ventilation horizontal flow biological drying reaction device is composed of a horizontal flow tank reactor 1, a forced ventilation system 2, a relative humidity sensor 3, an infrared temperature sensor 4, a forced ventilation control system 5 and a mechanical turning device 6 for dehydration Disposal of remaining sludge.

[0080] The dewatered excess sludge with a water content of about 80% from the effluent sewage treatment plant, the back-mixed sludge with a water content of about 40%, and rice bran with a water content of 20-30% are mixed at a ratio of about 1:0.62:0.28 , Adjust the initial moisture content of the material to between 58 and 65%. Then the premixed material is sent into the reactor from the inlet of the horizontal trough bioreactor, and then passes through the six ventilation zones of the horizontal trough reactor 1 in turn; the mechanical turning device 6 simultaneously plays the role of pushing the material and stirring ...

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Abstract

The invention discloses a forced ventilation horizontal flow bio-drying reaction device and a forced ventilation horizontal flow bio-drying reaction method. The forced ventilation horizontal flow bio-drying reaction device comprises a horizontal flow groove type reactor, a relative humidity sensor, an infrared temperature measuring sensor, a mechanical turning system, a forced ventilation system and a forced ventilation control system, and adopts a relative humidity-infrared temperature combined control mode. The relative humidity-infrared temperature combined control mode can adapt to rapid temperature change of sludge water evaporation in the forced ventilation process, can maintain the exhaust gas of the reactor to be in a saturated steam state, and effectively increases the bio-dryingspeed, the high-temperature stability and the air utilization efficiency. The forced ventilation horizontal flow bio-drying reaction device and the forced ventilation horizontal flow bio-drying reaction method can be applied to residual municipal sludge to realize rapid biological drying, and also can be applied to biological heat drying of biological fuel to reduce forced ventilation energy consumption.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment and solid waste treatment, in particular to a forced ventilation horizontal flow biological drying reaction device and method. Background technique [0002] The rapid temperature detection method is one of the core technologies to maintain the thermodynamic process of biological drying in the first stage during the forced ventilation process. The typical thermodynamic process of bio-drying can be divided into two stages, among which the most efficient bio-drying is the first stage in which the heat production of biomass exceeds that required for composting and drying. The moisture removal in the ventilation process is mainly completed through the rapid evaporative phase change process, which simultaneously takes away a large amount of latent heat to quickly reduce the temperature of the pile. Existing studies have shown that latent heat accounts for 70-80% of the total energy output ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/12C02F11/147
CPCC02F11/12C02F11/14
Inventor 郁达伟魏源送王亚炜张俊亚杨敏柳蒙蒙
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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