Method utilizing charcoal to achieve rural non-point source pollution denitrogenating

A method utilizing charcoal to achieve rural non-point source pollution denitrogenating includes the steps of modifying agricultural wastes in metal ionic solution, achieving air drying for the agricultural wastes for later using, placing the agriculture wastes after air drying in a sealed stainless container, obtaining charcoal through anoxycausis, taking out and smashing the prepared charcoal, burying the charcoal under an agricultural non-point pollution waste water collecting ditch pond, and mixing soil under the ditch pond with the charcoal to enable microbes in the soil under the ditch pond to be attached on the charcoal. When rural non-point source waste water is generated, the waste water is stored in the collecting ditch pond. Accordingly, when the waste water is infiltrated into the soil, ammonia nitrogen is absorbed by the charcoal, and nitrate nitrogen is taken as a slow-release carbon source by the charcoal to achieve denitrification under the function of the microbes in the soil. According to the method utilizing charcoal to achieve rural non-point source pollution denitrogenating, raw material is extensive in source and low in price, and secondary pollution is not generated to the soil due to fact that chemical agent is not added in a whole process. In addition, the operation process is very simple, the requirement for management is low, the quantity of reform for rural local non-point source pollution devices is relatively small, and cost is low.