燃气红外干化污泥对肥效及农用安全性的影响

Effect of Infra-red Drying on Fertility and Safety for Agricultural Use

自行研制的以煤气为能源的污泥干化中试成套设备,干化城市污水处理厂污泥,并对污泥肥效、病原体杀灭效果以及重金属含量的变化进行了研究,结果表明,经该套设备处理后,污泥的肥效保持不变,重金属含量也未发生变化,而污泥中的大肠杆菌和蛔虫卯全部被杀灭。处理后的污泥可在我国中、碱性土壤上作农肥使用。

Effect of infra-red drying by using a complete set of pilot-scale sludge drying device with coal-gas as energy source on the fertility and safety for agricultural use has been studied.The results showed that the dried sludge has the same plant nutrients as the wet sludge does, the content of heavy metals remained the same. But the dried product has been sterilized and could be handled with safety. It offers the farmers an alternative to handling liquid sludge, and can be utilized to the neutral or alkaline agricultural land.