Measures to improve composting technology and composting quality
Although the application of waste compost can improve soil and promote plant production, due to the composition of waste itself, the process is more professional in the process of fertilizer manufacturing, which will also have a potential impact on the environment.
High production, transportation and application costs and poor economic benefits restrict the application and development of composting. However, as a waste treatment and resource recovery method, economic benefit can not be the only standard to measure, but to make it a promising waste treatment method, improving composting process and improving composting quality is the main direction of future development.
Improvement of composting process
Composting has a long history and many technological processes. The treatment cost, treatment effect and compost quality of different process methods are different. Traditional anaerobic composting uses anaerobic microorganisms to complete the decomposition reaction.
Air and compost are isolated, the temperature is low, the process is relatively simple, and the nitrogen storage in the product is relatively large, but the composting cycle is too long, the smell is strong, and the decomposition of incomplete substances. Modern composting process is basically aerobic composting through forced ventilation. This is because of the high temperature of aerobic composting, effective killing of pathogens, complete decomposition of matrix, short composting cycle and low odor. wait.
How to collect garbage by classification and what classification equipment are needed?
Composting is a treatment technology of organic components in garbage. Stone, metal, glass and other wastes not only affect the fermentation process of compost, but also affect the quality of compost. These substances must be classified and treated separately. At present, mixed collection is generally used for urban domestic waste in China.
Although the paper and plastic in the garbage are greatly reduced after being picked up by residents, scavengers and sanitation workers for many times, the garbage still contains non degradable substances such as metal, waste battery and waste lamp. At present, the combination of mechanical sorting and manual sorting is usually used in the composting process. Mechanical separation methods mainly include screening, air separation and magnetic separation. Taking effective measures to promote the classified collection of municipal solid waste in China is very necessary to save composting cost and improve composting quality.
How to shorten the maturity cycle of composting
Composting mainly uses microorganisms to degrade organic matter, and microorganisms are the main body of the composting process. The type and quantity of microorganisms in compost have an important impact on the fermentation time and fertilizer efficiency of compost. There are two main microbial sources in composting.
On the one hand, it comes from the composting material itself. On the other hand, special microorganisms are domesticated and cultured to inoculate compost. These strains have the characteristics of strong activity, rapid reproduction and rapid decomposition of organic matter. They can accelerate the composting reaction process, shorten the composting reaction time, and help to reduce investment and land occupation.
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