Wastewater treatment discharge limitations are continuing to drop in many municipalities throughout North America. Many industrial dischargers are faced with unpleasant surprises when renewing their discharge permits due to lower discharge limits, plus the regulation of additional pollutants. 
 
Although new technologies are being introduced to the laundry industry for wastewater treatment, the dissolved air flotation (DAF) technology remains as the most common method. But while DAF technology has been well proven for the treatment of industrial wastewater, there are still some system design and operational deficiencies. 
 
With the increasing pressure of changing discharge limits ...