بررسي تاثير تراكم كرم E.Foetida بر pH ، نسبت C/N و سرعت فرايند در فرايند توليد ورمي كمپوست از پسماندهاي غذايي

Survey ofE.Foetida Population on pH, e/N Ratio and Processʹs Rate in Vermicompost Production Process f rom Food Wastes

Million tons of organic wastes are land filled or incinerated annually. Each of these methods for disposal of wastes can make various damages to environment. Also, gathering, landfill or incineration of these materials imposes high costs. In landfill of wastes in addition to problems related to costs and occupying of ground by wastes, there is infiltration threat of nitrate and other contaminants to groundwater. One of the useful methods for processing the organic wastes is recycling to organic fertilizer. As a result of this process, in addition to health and environmental problemsʹ reduction, considerable amount of organic fertilizer produced. Nowadays, applying earth worms for production of organic fertilizer from wastes, which is called vermin-compost, has found special popularity. In process of compost production by worms, worms are fed by organic wastes and the worms change it to fertilizer. In this process, by feeding the worms with organic materials, some useful bacteria for organic wastes decomposition are added which expedited the process. Also these bacteria have positi ve effects on stabilization and making minerals that are applicable for plants. Positive effect of adding vermi-compost to soil in tomato field had shown by Federico. In another research, the increasing of rice stalks and soil fertility obtained by adding vermi-compost. Iran has a production potential of 4 million ton s compost from municipal solid wastes, annually. So attention to thi s matter can be useful in solid waste management for improving the produced compostʹs quality.