| abstract |
The present invention relates to a non-degradable wastewater treatment method using a zero-ferrous iron process and a biological process, comprising a pretreatment process containing a zero iron, a biological oxidation process for secondary decomposition of the pretreated wastewater, and a separation process by precipitation. By combining the reduction process with zero iron and the oxidation process with biological treatment, the biodegradation performance of the hardly decomposable compounds in the wastewater can be improved in the pretreatment process, so that it can be finally decomposed in the biological oxidation process. Not only does it generate few by-products, but it is also low in maintenance costs, long in life with high contamination loads and short residence times, and requires minimal maintenance during continuous flow processes. |