A biodegradable sludge composting fermentation conditioner and its application

Abstract

The invention relates to a biodegradable sludge-compost fermentation conditioning agent. The sludge-compost fermentation conditioning agent comprises an organic conditioning agent and decomposed sludge with the mass ratio of 1:4-10. In order to promote decomposing of compost, accelerate heating of compost, shorten fermentation period and effectively reduce odor for promote smooth performing of the fermentation process, a sludge compost additive can be added according to the circumstance. The addition amount of the sludge compost additive is 0.05%-1% by weight of decomposed sludge. The conditioning agent is biodegradable, free of residue, free of secondary pollution, high in mechanical strength and good in water adsorption property, is capable of effectively improving the sludge compost structure and improving oxygen diffusion efficiency, and also is recyclable through screening, helps to reduce the usage amount of the fresh conditioning agent and reduce sludge processing cost, and has good environment benefit and considerable economic benefit.

Description

Technical field [0001] The invention belongs to the technical field of sludge composting treatment, and specifically relates to a biodegradable sludge composting fermentation conditioner and its application. Background technique [0002] Municipal sludge is an environmental problem that needs to be solved urgently in our country. With the acceleration of urbanization in my country, the rate of urban sewage treatment has increased year by year, and the sludge output of urban sewage treatment plants has also increased sharply. The composition of urban sludge is complex. In addition to containing a lot of water, it also contains a lot of organic matter, pathogenic bacteria, parasites and toxic substances such as heavy metals, often accompanied by a foul smell. When urban sludge that has not been properly disposed of enters the environment, it directly brings secondary pollution to water bodies and the atmosphere, and also poses a threat to the ecological environment and human activi...

AI Technical Summary

Problems solved by technology

[0004] Traditional organic conditioners include straw, wood chips (blocks), rice (wheat) husks, reeds, leaves, etc., but they decompose themselves during the composting process, lose water absorption capacity, and lose supporting capacity. The structural characteristics make it difficult for the cellulose in traditional organic conditioners to be fully decomposed by the outer layer of lignin, and the degree of utilization of it by microorganisms is limited, and the composting time is prolonged. The acquisition of raw materials is also affected by seasonality, making it difficult to Recycling, increasing the cost of sludge treatment

Commonly used inorganic conditioners include inorganic ore, granular ceramics, rocks, etc., which can be recycled, but the residue will cause secondary pollution, which will reduce the organic matter content in the sludge, thereby reducing the fertilizer efficiency of sludge composting products

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