Based On Nitrogen Loss In Situ Zero-emission Control And Leachate Kitchen Waste Compost And Straw Combined

In order to control the losses of nitrogen,composting of leachate produced and reduce the emissions of greenhouse gases in the process of the high-temperature compost,such as methane, and in order to improve product quality, composting for factory compost production provides technical parameters.It is make the kitchen waste things and the corn stalks for the compost raw material in this paper, to study on the changes in oxygen during composting and compost maturity of products, and other gas emissions law, for the promotion of composting to improve the quality of compost products, reducing environmental pollution is important. In the investigate of Haidian District in Beijing, the 6 townships refuse to investigate the status and physical composition analysis carried out by components of coarse sub-categories in accordance with sub-categories of crude methods were carried out kitchen waste and straw, and the feasibility of composting Forced ventilation system through the compost material ratio, ventilation rate, adding a fixed dose ratio of orthogonal three factors and three levels of test groups, factors proposed composting Combination programs. The results showed that:Rural life in the kitchen waste garbage, accounting for 66% of domestic waste. Garbage collection is basically a way of tricycles and agricultural vehicles. And then focus on the nearest landfill disposal or collected freely by farmers pile. Each component will be essential to kitchen waste, plastic and paper based. People living on a poor sense of source separation of garbage, and only 50.40% of people know refuse, garbage,67% of the garbage dumped directly without any treatment.Kitchen waste and straw compost combined separate kitchen waste compost than the temperature rose rapidly, the next day to have reached more than 55℃, and a separate kitchen waste into more than forty days to reach 55℃. And a large number of separate food waste composting leachate. And 65% and 75% of the proportion of added kitchen waste generated no leachate treatment.Maturity through fuzzy evaluation obtained:75% addition level of food waste treatment evaluation of grade one, that is, the proportion of food waste added to 75%, maturity best, the best ratio, ventilation rate was controlled at 0.06 m3/min·m-3, every 0.5 hours of intermittent ventilation mode.The amount of ammonia produced by the various factors combined mean and range of the calculation results can be obtained, factor C, P=<0.05, the factor C significantly affected the results, factor A, factor B on the experimental results was not significant.Factor B (ventilation rate) equivalent emissions of greenhouse gases significantly affect the P value 0.0294<0.05, factor A, C on the temperature did not significantly affect air emissions. Maturity indicators on GI, EC available orthogonal analysis, factor A, B, C are on the maturity index GI, EC no significant effect.Based on the situ nitrogen loss control and zero-emission kitchen garbage leachate and straw co-composting of greenhouse gases into account, NH3 emissions and compost effects of other factors,3 factors and 3 levels of the optimal combination ratio for the kitchen to add 85% ventilation 2·10-4m3·kgDM-1.mi-1, calcium hydroxide:phosphoric acid= 1:2.