كليدواژه :
crude leachate , anaerobic reactor , aeration , COD TSS
چكيده فارسي :
Composting technology is an important method for the recycling of municipal solid wastes. The essential requirement of compost for safely and useful used in soil is a high degree of its stability or maturity. At the present study, the maturity and stability of composted municipal solid wastes at a biocompost plant was evaluated by Monitor of the important parameters of the leachate and how it changes to predict the performance and efficiency of the treatment plant, is necessary. The aim of this study was to monitor the changes in EC, COD, pH and TSS parameters in raw leachate of municipal waste by considering the possibility of leachate treatment at 5 stations (raw leachate, anesthesia unit, primary aeration, secondary aeration and final output) of the compost plant. Gorgan s Aq Qala was in different seasons of the year. For this purpose, 135 sampling times were performed in 1258 days from 2016 to 2020, and the changes of the mentioned parameters were investigated. The results of comparing the average EC concentration of raw leachate and output yielded 67.7% elimination efficiency, and the refinery s anaerobic reactor continued to operate without any problems, despite the high EC. The results of comparing the average TSS in the raw leachate and output unit with the elimination efficiency were 97.5%. The mean COD results in raw leachate and outflow units showed a 99% elimination efficiency and the best efficiency was obtained in the final and late fall outflows, which was related to ambient temperature and optimal bacterial activity. The results of the mean pH in the raw leachate unit and output showed high efficiency and optimal performance equal to 99.7, which reached its lowest value in the first half of spring in order to reduce the alkalinity of raw leachate. The anaerobic reactor station had the best efficiency among the measuring stations.
