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Kitchen waste disposal method and anaerobic fermentation reaction device

A technology of food waste and treatment method, which is applied in the field of fermentation, to achieve the effect of high sludge load rate, small biogas residue production, and improved gas production rate

Inactive Publication Date: 2012-10-03
无锡丰陆环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the design of the fermentation biogas system scheme has a great impact on ensuring the smooth and efficient completion of the anaerobic fermentation process. Organic solid waste, including kitchen waste, has completely different flow and material characteristics from wastewater. Research on waste anaerobic fermentation fermentation equipment is still in its infancy

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  • Kitchen waste disposal method and anaerobic fermentation reaction device
  • Kitchen waste disposal method and anaerobic fermentation reaction device

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for treating food waste, comprising the following steps:

[0038] (1) Screening and crushing of food waste: Classify the collected food waste according to organic matter and inorganic matter, remove metal, plastic, glass bottles and other sundries, and crush the separated organic matter into fine particles with a particle size of 8mm. get mixed material;

[0039] (2) Moist thermal hydrolysis treatment: the mixed material obtained in step (1) is pumped through pipelines to a humid heat reaction device for cooking at a temperature of 160°C for 80 minutes to obtain a mixture of solids, waste water, and oil;

[0040] (3) Solid-liquid separation: send the mixture obtained in step (2) into a centrifuge, and perform solid-liquid separation on the wet heat treated material by means of centrifugal pressure filtration;

[0041] (4) Oil separation: the liquid part separated in step (3) is separated by gravity and centrifugation, the oil is recovered, and the waste water ...

Embodiment 2

[0048] A method for treating food waste, comprising the following steps:

[0049] (1) Screening and crushing of food waste: Classify the collected food waste according to organic matter and inorganic matter, remove metal, plastic, glass bottles and other sundries, and crush the separated organic matter into 0.7mm fine particles to obtain a mixture material;

[0050] (2) Moist thermal hydrolysis treatment: the mixed material obtained in step (1) is pumped through pipelines to a humid heat reaction device for cooking to obtain a mixture of solids, waste water, and oil;

[0051] (3) Solid-liquid separation: send the mixture obtained in step (2) into a centrifuge, and perform solid-liquid separation on the wet heat treated material by means of centrifugal pressure filtration;

[0052] (4) Oil separation: the liquid part separated in step (3) is separated by gravity and centrifugation, the oil is recovered, and the waste water is used for standby;

[0053] (5) Pulping: hydration ...

Embodiment 3

[0058] A method for treating food waste, comprising the following steps:

[0059] (1) Screening and crushing of food waste: classify the collected food waste according to organic matter and inorganic matter, remove metal, plastic, glass bottles and other sundries, and crush the separated organic matter into fine particles to obtain mixed materials;

[0060] (2) Moist thermal hydrolysis treatment: the mixed material obtained in step (1) is pumped through pipelines to a humid heat reaction device for cooking at a temperature of 160°C for 80 minutes to obtain a mixture of solids, waste water, and oil;

[0061] (3) Solid-liquid separation: send the mixture obtained in step (2) into a centrifuge, and perform solid-liquid separation on the wet heat treated material by means of centrifugal pressure filtration;

[0062] (4) Oil separation: the liquid part separated in step (3) is separated by gravity and centrifugation, the oil is recovered, and the waste water is used for standby;

...

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Abstract

The invention discloses a kitchen waste disposal method, which comprises the following steps of: (1) screening and crushing kitchen waste; (2) carrying out damp and hot hydrolytic treatment; (3) carrying out solid-liquid separation; (4) carrying out fat separation; (5) pulping; (6) carrying out fermentation pretreatment, and (7) converting solid matter microorganism. According to the kitchen waste disposal method disclosed by the invention, from the view point of improving the biodegradation efficiency and the biogas production efficiency of the kitchen waste, the methane is prepared from compound microorganism bacterium agent and the processed kitchen waste by mixing and fermenting, and the microorganism bacterium agent fundamentally solves the problems of high saline matter and high fat of the kitchen waste and odour in a biological treatment process, and greatly improves the efficiency of producing the methane by anaerobic digestion.

Description

technical field [0001] The invention relates to a fermentation method, in particular to a kitchen waste treatment method and an anaerobic fermentation reaction device. Background technique [0002] The energy problem has become a worldwide problem and has risen to the height of national strategic security. The total amount of resources in my country is relatively rich, but the per capita reserves are small, and the reserve resources are insufficient; the rapid economic growth and high consumption rate have accelerated the exhaustion of energy, which has led to prominent contradictions between energy supply and demand, and energy security issues. The development and utilization of waste biomass energy is an important part of renewable energy. At present, the annual output of urban waste in my country is about 150 million tons, of which kitchen waste accounts for nearly 50%. Food waste contains a large amount of biomass energy. If it can be used as energy, it can become a ben...

Claims

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Application Information

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IPC IPC(8): C12P5/02C12M1/107
CPCY02E50/343C12M45/04C12M21/04C12M45/06C12M45/02C12M27/02Y02E50/30
Inventor 赵雪峰樊婷婷刘思颖贾捍卫
Owner 无锡丰陆环保科技有限公司
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