Assessment of Biological Treatment Technology for Local Pollutants in Mines

摘要

The Pheretima califonica is chosen in the paper to explore the technical feasibility of processingpoultry manure with earthworms in practical applications. Three technical parameters including inoculumamount of agents, thickness of buffer layer and density needed for processing fresh chicken manureoutdoors by earthworms are studied and determined. The sample inspections were performed toexamine water quality before and after digesting and processing chicken manure by earthworms. Ascan be concluded from the result, it is feasible to process fresh chicken manure by earthwormsdirectly under outdoor environment. The optimal technical parameters are summarized as: sameinoculum amount of EM agent and nitrifying bacteria agent (each with 10mL/300g of fresh chickenmanure), 4cm thickness pavement of attapulgite buffer layer and the density of 12 earthworms in termsof 300g of fresh chicken manure. The water quality after digesting and degrading chicken manure byearthworms shows the obvious changes and increases in the content of inorganic nitrogen.