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Anaerobic digestion device and digestion method for kitchen waste

A technology for anaerobic digestion and kitchen waste, applied in the field of anaerobic digestion system, can solve the problems of complex structure of anaerobic reactor, cumbersome control of inflow and outflow of materials, etc., and achieve the effect of simple structure, convenient construction and convenient operation

Active Publication Date: 2016-01-06
JINYOU MACHINERY NANTONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the anaerobic reactor is relatively complicated, and the inflow and outflow control of materials during operation is cumbersome.

Method used

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  • Anaerobic digestion device and digestion method for kitchen waste

Examples

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Effect test

Embodiment 1

[0032] (Example 1, anaerobic digestion device for kitchen waste)

[0033] See figure 1, The anaerobic digestion device for kitchen waste in this embodiment includes a reactor main body 1, an upper cover 2, a circulation pump 3, a water delivery pipeline 4, a return water pipeline 5, a control valve and a raw water tank 7. The upper cover 2 is arranged on the top of the reactor main body 1 to seal the cavity inside the reactor main body 1 . The circulation pump 3 transports the waste liquid in the raw water tank 7 to the water inlet of the reactor main body 1 through the water delivery pipeline 4, and the circulation pump 3 sends the reaction liquid inside the reactor main body 1 back from the top of the reactor through the return water pipeline 5. Inside Reactor 1.

[0034] The interior of the reactor main body 1 is provided with a solid phase reaction zone 11 and a liquid phase reaction zone 12 , and a bottom sludge outlet 13 is provided at the bottom of the reactor main bo...

Embodiment 2

[0047] (Example 2, the anaerobic digestion method of kitchen waste)

[0048] The device used in the anaerobic digestion method of kitchen waste in this example is the anaerobic digestion device described in Example 1.

[0049] The anaerobic digestion method of the kitchen waste of the present embodiment comprises the following steps:

[0050] ① Domestication of strains. Take the raw mud in the anaerobic tank of the urban sewage treatment plant with a solid content of 5% to 7% and put it into the cultivation tank, put the filler 12-2 in the cultivation tank, and submerge the raw mud in the cultivation tank with the filler 12-2 , when acclimating the strains, in order to meet the needs of microbial growth in the culture tank, add nutrients glucose, N, P and trace elements Fe, Co, Ni to the culture tank, add 10L of culture solution; the strains were acclimatized for 10-15 days at medium temperature (35±2°C). After the acclimatization is completed, the anaerobic strain obtained...

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Abstract

The invention discloses an anaerobic digestion device and a digestion method for kitchen waste. A solid phase reaction zone and a liquid phase reaction zone are formed in a reactor main body of the anaerobic digestion device; an air outlet, a reflux water inlet and a temperature measuring port are formed in the top of a reactor; a spray head is arranged at the lower part of the reflux water inlet, a water outlet is formed below the liquid phase reaction zone, and a water inlet and a sludge discharge pipe are arranged at the bottom of the reactor. When anaerobic digestion is performed on the kitchen waste, solid phase residue and waste liquid phase of the kitchen waste can be subjected to sufficient anaerobic digestion reaction in an alternating manner of submerged anaerobic digestion and leaching reaction, so that the kitchen waste is treated to the greatest extent, and maximal resourceful treatment is realized.

Description

technical field [0001] The invention relates to an anaerobic digestion system, in particular to an anaerobic digestion device and a digestion method for kitchen waste. Background technique [0002] Food waste refers to food waste, catering leftovers, food processing waste and non-edible animal and vegetable oils and various oil-water mixtures from families, schools, institutions, public canteens and catering industries. It is part of urban domestic waste. At present, domestic kitchen waste treatment methods are mainly landfill and incineration together with domestic waste. The landfill treatment method will reduce the service life of the landfill. As for the incineration treatment method, only a few developed cities such as Shenzhen have adopted it. Waste incineration technology has been adopted, and the harmful gases, dust, waste water, etc. produced by incineration such as dioxin, nitrogen oxides, and sulfur dioxide have not been effectively controlled. In order to realiz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/107C12M1/34C12P5/02C02F11/04
CPCC12M21/04C12M23/34C12M29/06C12M29/18C12M29/26C12M41/12Y02W10/20
Inventor 孔峰张晓叶程洁红姜翠萍路娟娟高永
Owner JINYOU MACHINERY NANTONG