Semi-dry kitchen waste continuous treatment system and method for treating kitchen waste

A technology of kitchen waste and treatment system, applied in the field of continuous treatment system of kitchen waste, can solve the problems of unstable operation of equipment, low efficiency of kitchen waste treatment, etc., and achieve the effects of saving volume, occupying a small area and manufacturing cost.

Active Publication Date: 2014-03-12
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a semi-dry continuous treatment system for food waste, which solves the problems of low treatment efficiency of food waste and unstable operation of equipment.

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  • Semi-dry kitchen waste continuous treatment system and method for treating kitchen waste
  • Semi-dry kitchen waste continuous treatment system and method for treating kitchen waste
  • Semi-dry kitchen waste continuous treatment system and method for treating kitchen waste

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Embodiment Construction

[0031] The inventors of the present invention found that most of the existing kitchen waste anaerobic digestion treatment equipment adopts dry or wet discontinuous operation mode, and all of them need to sort the kitchen waste and separate the solid and liquid, and the separated The water is only discharged into the sewer after removing the oil, and most of the separated solid components are landfilled or incinerated, which can easily cause pollution of the surrounding water, soil and atmospheric environment. This kind of food waste treatment method not only easily pollutes sewers because of the organic components in the water, but also increases the burden on urban public sewage treatment facilities, and can not recycle energy substances in food waste, which is wasteful and not environmentally friendly.

[0032] In view of the above problems, the inventor of the present invention proposes a technical solution, which is as follows: a semi-dry food waste treatment system, includ...

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Abstract

The invention discloses a semi-dry kitchen waste treatment system and a method for treating kitchen waste by using the system. The semi-dry kitchen waste treatment system comprises a crushing unit, a feeding unit, an anaerobic digestion unit and a gas purifying and collecting unit which are connected with one another sequentially, wherein the anaerobic digestion unit is provided with a stirring device; a heat-insulating device is arranged on the outer wall of the anaerobic digestion unit; and the anaerobic digestion unit is also connected with an acid-base neutralization device and an aerating and mixing device. The semi-dry kitchen waste treatment system provided by the invention has a continuous feeding and discharging function and the characteristic of gas liquid solid separation, effectively shortens the fermentation period of anaerobic treatment on organic wastes and completely improves the anaerobic treatment efficiency. The treatment period is shortened from 35-45 days of batched treatment to 4 days; the water content of the continuously treated organic solid wastes can reach 80%-95%; the yield of methane can reach 472 liters per kilogram of volatile solid; the methane volume content can reach 73.1%; the capacity reducing ratio of the kitchen waste reaches above 50%.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a continuous kitchen garbage treatment system. Background technique [0002] The disposal and recycling of solid organic waste has always been an important issue in the field of environmental protection. At present, the amount of solid organic waste such as kitchen has increased significantly in recent years. These solid wastes rich in organic matter are usually disposed of by landfill, composting and incineration, which is time-consuming and labor-intensive, and the various odorous waste gases produced will seriously pollute the environment, and the energy substances in them are not fully recycled. Anaerobic treatment technology has achieved great success in the field of wastewater, and it is currently the mainstream technology for treating solid organic waste. The use of solid organic waste to produce biogas can not only directly reduce the volume of organic solid w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 万顺刚孙蕾胡朝华罗文邃
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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