Treatment of Domestic Laundry Wastewater in a Constructed Rapid Infiltration System
Directly discharge of domestic laundry wastewater into surface water lead to a large amount of pollution in major proportion of linear alkyl benzene sulphonates (LAS). A constructed rapid infiltration system in laboratory scale was used to treat household laundry wastewater and the performance was analyzed. Results showed that average removal of LAS, COD, BOD and ammonia remained at stable levels with removal efficiency of 99.0%, 79.8%, 72.5% and 90.88% respectively. The contributions to removal efficiency in the aspect of working mode of system, composition of artificial soil and depth of soil were discussed and mutual coherence of each removal mechanism was also included.