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A treatment method and technology for kitchen waste, applied in the field of waste treatment and recycling, can solve problems such as cumbersome steps, and achieve the effects of simple steps, processing cycle advantages, and shortening processing time.
Inactive Publication Date: 2015-11-25
肖唐彦
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[0008] The purpose of the present invention is to provide an environmentally friendly and efficient kitchen waste treatment method, which overcomes the shortcomings of traditional landfill, incineration and compos
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Embodiment 1
[0037] Step S11: Sorting the kitchen waste to remove metal products, plastic products, glass products and ceramic products contained therein.
[0038] Step S12: Grinding the sorted kitchen waste into a slurry, then adding beneficial bacteria to the slurry for primary fermentation, and after the primary fermentation is completed, heat preservation for secondary fermentation.
[0039] Step S13: after the secondary fermentation is completed, black soldier fly larvae are inoculated into the slurry for reproduction, and after the reproduction is completed, black soldier fly adult larvae and feces are collected.
Embodiment 2
[0041] Step S21: same as step S11.
[0042] Step S22: In this step, after the sorted kitchen waste is pulverized into a slurry, beneficial bacteria are added for initial fermentation at 50° C. for 3 hours. After the primary fermentation is completed, the fermentation temperature is adjusted to 30° C., and the secondary fermentation is carried out at this temperature, and the time of the secondary fermentation is controlled at 6 hours.
[0043]Step S23: same as step S13.
Embodiment 3
[0045] Step S31: Separating the kitchen waste into solid and liquid to remove the liquid waste; for a large amount of kitchen waste, the collected kitchen waste can be transported to a water separation machine for separation. The separated liquid waste enters anaerobic fermentation, the biogas is used in the production line, and a certain amount of biogas slurry is accumulated to make liquid fertilizer for sale.
[0046] The separated solid kitchen waste is sorted to remove metal products, plastic products, glass products and ceramic products contained in the kitchen waste. The separated metal, plastic, glass and porcelain products are dried and deodorized before being sent to landfill as landfill.
[0047] Step S32: Pulverize the sorted kitchen waste into a slurry, add rice bran whose mass accounts for 25% of the slurry mass, and mix evenly. Then add beneficial bacteria and carry out primary fermentation at 50°C. After 2 hours of primary fermentation, adjust the fermentation...
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Abstract
The invention provides a kitchen garbage treatment method. The kitchen garbage treatment method specifically comprises the following steps that kitchen garbage is sorted, so that metal products, plastic products, glass products and ceramic products are removed; the sorted kitchen garbage is smashed into pulp, beneficial bacteria are added for primary fermentation, and secondary fermentation is conducted after heat preservation; and after secondary fermentation is completed, young hermetia illucens is added into the pulp for reproduction, and the hermetia illucens and manure are collected. The method overcomes the defects that according to traditional landfill, incineration and compost treatment method, secondary pollution is prone to being generated and steps are complicated and has the advantages that secondary pollution is avoided, dehydration and deoiling are not needed, and terminal products with high value can be obtained. Furthermore, the temperature of primary fermentation is preferably 50-80 DEG C, the temperature of secondary fermentation is preferably 30-40 DEG C, it is guaranteed that the total time for primary fermentation and secondary fermentation is not longer than ten hours, and the treatment cycle is greatly shortened. During actual treatment, the total amount of garbage treated every day can as large as 100 tons, and kitchen garbage can be effectively treated in time.
Description
technical field [0001] The invention relates to the field of waste treatment and recycling, in particular to a treatment method for kitchen waste. Background technique [0002] Kitchen waste generally refers to restaurants, hotels and other catering industries, as well as food cuttings and food residues in public canteens such as enterprises and institutions, colleges and universities. It has high moisture content, high organic matter content, high oil and salt content, and is easy to corrupt. Features. With the rapid growth of urban economy and the rapid expansion of urban scale, kitchen waste is increasing day by day. The daily production of kitchen waste in my country exceeds 20Kt. Because kitchen waste is easy to ferment, deteriorate, and rot, it not only produces a large amount of toxins and emits foul-smelling gases, but also pollutes water bodies and the atmosphere, seriously affects environmental sanitation, and poses a potential threat to people's health. Therefo...
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