Treatment of train laundry wastewater for recycling

A new process has been developed in treating train laundry wastewater for recycling. In the work, the process of coagulation-sedimentation and SBR has been researched, the results has shown that the characters of the wastewater was great improved by coagulation-sedimentation under the conditions of 80mg/L of PAC as coagulant and 30mg/L of APAM as coagulant aid, and then by SBR under the conditions of 2.0h of anaerobic time, the effluent concentration could achieve the reuse standard of GBT18920-2002, and it could be applied for miscellaneous use.