Preparation method for sludge aerobic composting composite inoculum

Abstract

The invention discloses a preparation method for a sludge aerobic composting composite inoculums. According to the method, the Bacillus subtilis (No. 10066), the Bacillus licheniformis (No. 10103), the Lactobacillus acidophilus (No. 6075), the Candida utilis (No. 31272), and the Phanerochaete chrysosporium (No. 40719) that are preserved in China Center of Industrial Culture Collection (CICC) are subjected to individual culture, and are then mixed in proportion and inoculated into a fermentation culture to perform expanded culture, thus obtaining the composite inoculum. At the initial stage of inoculating the composite inoculums to sludge aerobic composting, the time for the compost body to reach a high temperature period is advanced by 4-6 days, the compositing period is shortened by 11-14 days, the stack moisture content is decreased by 18%-25%, and the total nitrogen content of the compost body is increased by 15%-20%, thus improving the composting effect.

Description

technical field [0001] The invention relates to a sludge aerobic composting compound bacterial agent, in particular to a preparation method of the sludge aerobic composting compound bacterial agent. Background technique [0002] With the acceleration of my country's urbanization process, the amount of urban sewage treatment continues to increase, and the sewage treatment technology has become increasingly mature. The accompanying problem is how to deal with the large amount of excess sludge generated when the sewage treatment plant treats sewage. At present, the treatment and disposal methods of surplus sludge in my country mainly include dry incineration, sanitary landfill, composting and so on. Among them, the sludge composting technology is usually mixed with municipal garbage, livestock and poultry manure, straw, wood chips, fly ash and other auxiliary materials for aerobic composting, which is an active and effective sludge resource and harmless treatment and disposal m...

AI Technical Summary

Problems solved by technology

[0003] For example, the Chinese Patent Application No. 201010514582.7 discloses "the method of aerobic composting of sludge by using composting compound bacterial agent", wherein the compound bacterial agent includes the same compound bacterial agent A and composite bacterial agent B, and the composite bacteria are inoculated at the initial stage of composting Agent A can promote the rapid decomposition of protein, fat, starch, etc. in the compost, so that the compost temperature can reach the fermentation high temperature period in advance, and inoculate a layer of composite strain B degradable fiber with a thickness of 0.1m on the surface of the compost in the form of covering during the high temperature period Hemicellulose and cellulose are used to achieve the composting effect, but this kind of inoculation is carried out in different ways at different times, and the timing of inoculation needs to be grasped, and the operation requires strict precision

[0004] The specification of Chinese patent application No. 200910113229.5 discloses "a preparation method of compost fermentation composite bacterial agent", which utilizes a composite bacterial strain composed of Candida utilis, plant lactic acid bacteria, and Bacillus subtilis to inoculate compost Finally, it can strengthen the degradation of cellulose in the compost and improve the quality of degradation. However, the compost needs to be turned frequently, and it is easy to suffer from the odor of the pile. The loss of nitrogen and organic matter is serious, and the composting period is as long as 6 weeks, so the fertilizer effect is not good. Ideal etc.