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  • Aerators Enhance Aerobic Digester Process
    In 2003, Eden WWTP staff became aware of floating brush rotor aerators as a potential approach to providing oxygen transfer and mixing in the aerobic digester. AERATORS ENHANCE AEROBIC DIGESTION PROCESS. After installing four 20-hp aerators, the city of Eden, N.C., happy with performance, results
  • PTMD Scrubber Improves Odor Control at Vancouver Island Wastewater Treatment Plant
    The French Creek Pollution Control Centre treats wastewater from the City of Parksville and the Town of Qualicum Beach on Vancouver Island in British Columbia. Originally, the plant used the extended aeration process with aerobic sludge digestion for wastewater treatment. From 1995 to 1997
  • Application of pre-acidification
    tank reactor (CSTR) followed by anaerobic/aerobic series treatment. COD and TSS reductions of 34% and 80% respectively, in the acidogenic stage, resulted in effluent that responded well to the anaerobic/aerobic series treatment. The system produced final effluent in which COD and TSS had been reduced
  • Advanced Oxidation Ditch Performance (.pdf)
    settling. If the ditch is very underloaded, it may be necessary to turn off the aerators periodically to reduce DO levels; otherwise, too much DO is carried into the anoxic zone. In some oxidation ditches, wastewater influent enters the front end of the aerobic zone (Figure 2). The length

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