Biocontrol trichoderma agent prepared with active sludge and abandoned biomass

Abstract

The invention relates to a method producing trichodermin prophylactic by utilizing remained activated sludge and agriculture and forestry scrap biomass, which belongs to the technical field of biopesticide and environmental pollution treatment. The method mainly takes the remained activated sludge and scrap biomas generated during sewage disposal as the producing raw material and producing the trichodermin prophylactic by adopting the method of solid state fermentation. The manufacturing technique comprises: (1), crushing and pretreating scrap biomass; (2), preparing culture medium of sludge and biomass; (3), inoculating trichoderma viride after sterilizing the culture medium for solid state fermentation; (5), appending stabilizer and auxiliary agent into the leavening after being dried. The method can be used for crushing and packing and also can be directly used in agricultural soils, which can prevent and cure soil-borne disease and improve soil and increase soil fertility. The trichodermin prophylactic produced with the technics can effectively prevent and cure various diseases caused by plant pathology with low producing cost; besides, the product can effectively treat the castoff, thus reducing the pollution for environment.

Description

technical field

[0001] The invention belongs to the technical field of biological pesticide and environmental pollution control. technical background

[0002] In the sewage treatment process, the activated sludge method is one of the most widely used technologies. This method plays a very important role in water treatment because of its advantages of high efficiency, low cost and less land occupation. However, this method During the process of sewage treatment, a large amount of residual sludge will be produced, usually accounting for 0.5% to 1.0% of the total sewage. In an ordinary secondary sewage treatment plant, the investment required for sludge treatment accounts for about 30% to 40% of the total investment, and the operating cost accounts for about 20% to 50% of the total operating cost. Sludge digestion, dehydration, and then landfill is a commonly used disposal method in domestic large-scale sewage treatment plants. Landfill disposal is more economical, but this d...