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Resource using method for food and drink garbage

A food waste and recycling technology, applied in the field of ethanol fermentation residue to produce protein feed and organic fertilizer, can solve the problems of low waste utilization rate, affecting microbial fermentation, high energy consumption, etc., and achieve high product added value or utilization value, High economic and social benefits, less investment in equipment

Inactive Publication Date: 2007-10-24
中船重工(西安)东仪环保科技有限公司
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Problems solved by technology

[0008] Obviously, the prior art has the following deficiencies: (1) Catering waste contains a large amount of animal and vegetable oil and salt, which cannot be completely recovered through a simple dehydration process. If it is not removed, it will affect microbial fermentation, and it is also a resource waste; (2) The utilization rate of garbage in the existing technology is not high, and the solid waste in the food waste is generally used to make feed; (3) Some technologies need to first carry out pyrolysis treatment on the food waste, so the energy High consumption

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  • Resource using method for food and drink garbage

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Embodiment Construction

[0031] See accompanying drawing 1. The present invention uses an acid solution during solid-liquid separation of catering waste, and the use of the acid solution obviously improves the recovery rate of oil by about 10-30%. The use of the acid solution is also beneficial to the oil-water separation operation. Described acid solution can be inorganic acid or organic acid, certainly, considering the reason of cost, it is more economical to use inorganic acid, in inorganic acid, especially sulfuric acid, hydrochloric acid or phosphoric acid etc. are good, the pH that reaches better separation effect is 3-5.

[0032] The waste oil can be used to synthesize biodiesel, and the method is as follows: the waste oil is removed from mechanical impurities, phospholipids and sterols, and then sodium methoxide catalyst is added in an amount of 0.7-1.3% of the weight of the pretreated waste oil; low-carbon alcohol is added The amount is 15%-35% of the weight of waste oil after pretreatment. ...

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Abstract

The invention relates to a catering garbage reutilization method. It separates the liquid and the solid garbage and acidify them, then separate oil and water to get waste oil grease and sewage, using the waste grease synthesizing into biological diesel, processing the sewage to the required standard, crushing and grinding the solid, which are mixed with water to generate alcohol, batching, sterilizing, fermenting and drying the animal fodder. In this way, it can realize harmless processing of food waste, with zero discharge and enclosed green production.

Description

technical field [0001] The invention belongs to a method for treating catering waste, and more specifically, it relates to a method for fully reusing the catering waste. The animal and vegetable oil contained in the waste is synthesized into biodiesel, and the starch and cellulose contained in the waste are saccharified to produce fuel ethanol. Catering waste containing protein, starch, cellulose, and ethanol fermentation residue to produce protein feed and organic fertilizer. Background technique [0002] The treatment of catering waste is a worldwide problem, and at the same time the treatment of catering waste is imminent. It has attracted great attention from all levels of society for a long time. A large amount of food waste is used by pig farmers in the suburbs to feed pigs without any treatment, resulting in tens of millions of "garbage pigs" and "garbage chickens". A vicious cycle; and the waste oil is refined by unscrupulous traders and then mixed with edible oil a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C10G3/00C10L1/02A23K1/10C12P7/06C05F9/04A23K10/20A23K10/30
CPCY02E50/13Y02E50/17Y02A40/20Y02E50/10Y02P30/20Y02P60/87
Inventor 张虎明张付舜
Owner 中船重工(西安)东仪环保科技有限公司
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