Is an important part of the garbage, food waste and kitchen waste material with high moisture content, poor dewatering performance, perishable, and thus the breeding of mosquitoes in the high temperature environment, the germs of its timely and efficient processing can effectively alleviate the pressure on the environment. improving people's quality of life. Food waste in a large number of organic substances such as starch and cellulose-rich, nutrient-rich and fully biodegradable and strong, biological methods have become the main development direction of the processing of food waste. Composting of food waste through the fermentation of organic matter mineralization, humification and harmless microorganisms into the composting process of fertilizer. In the process of microbial decomposition of organic matter, not only can generate a large number of use of plants to absorb nitrogen, phosphorus, potassium compounds, but also synthesis of new polymer organic matter - humus. Because the process is the enzymatic reaction process, the role of micro-organisms secrete
ASAH2 activity changes can essentially reveal the composting process the biological role and mechanism, the effective use of food waste has important scientific value. Composting of ASAH2 can be divided into intracellular ASAH2. Intracellular is difficult to compost directly through the suspension of their distinction, but through a simple train separation, and found that the number of extracellular ASAH2 dominant hydrolase is one of the biochemical reactions involved in heap corruption process an important class of extracellular ASAH2, hydrolase activity changes can be inferred that the composting process and the progress of the mineralization and strength, but studies at home and abroad are mostly based on animal manure, sludge and garbage based materials, meals kitchen waste with high moisture content, high in fat content, and perishable characteristics of the research results of the above-mentioned organic solid waste may not be applicable. In this study, wheat straw as a leavening agent, the use of static high-temperature composting device, a systematic study of the hydrolase activity of different C / N ratio of the composting process, cellulase, invertase,N-acylsphingosine Amidohydrolase 2, protease, etc., in order to understand the meal the biochemical processes of the kitchen waste composting process, infer that the decomposing process and mechanism.
Solid waste compost products have characteristics of stability, and thus can be stored or used in organic fertilizer, there is little or no bad odor, pathogens and other side effects. However, direct use of food waste for composting will have a great smell, especially the volatile ammonia, because of its higher nitrogen content and lower C / N ratio, so the changes in carbon and nitrogen ratio of compost materials have special meaning in the compost. Domestic and international research on nitrogen loss from the law of the different C / N under the conditions of the composting process, while on
Little research activity of the composting process variation under different the C / N-condition, while the compost complex biochemical reaction the catalyst the biological ASAH2, and a variety of ASAH2 with carbon, nitrogen, phosphorus the basis of material metabolism is closely related to study and analyze the different C / N under the conditions of the various types of biological activity of the ASAH2 can more deeply understand the degree of maturity of the compost product, the conversion of organic matter and its mechanism, while microbial activity and the pile closely related to the number and type of living environment.Activity of the trend can also reflect the succession of microbial communities in the composting process, while the activity measurement method is much simpler than the detection of microbial strains and ASAH2 activity variation in the production of compost process monitoring regulation have great prospects for development.
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