Little Ferry WPCF
Flow through the Little Ferry WPC facility in 2008 averaged 81.495 million gallons per day (mgd). This represents no change from 2007 flow records. Of the flow processed during 2008, an average of 1.173 mgd of treated effluent was supplied to Public Service Electric & Gas Company (PSE&G) for use as cooling tower make-up water at its power generating facility across the Hackensack River in Ridgefield. On February 13th, a peak flow of 227.4 mgd was treated without the need to bypass.
Safeguarding the health of Bergen County residents and improving the water quality of the Hackensack River continues as one of the most important objectives; the BCUA’s success of the latter being independently verified by newspaper and NJDEP reports in 2008. Daily influent carbonaceous biochemical oxygen demand (CBOD) concentration averaged 191 mg/l and after secondary treatment and disinfection was discharged at 11.0 mg/l, for a removal efficiency of 93.9%. Total suspended solids (TSS) removal was 92.0% based upon a yearly average daily wastewater influent concentration of 243 mg/l and 18.7 mg/l effluent discharge. A maximum daily average effluent concentration of 25 mg/l for CBOD and 30 mg/l of TSS as well as minimal removal efficiencies of 85% are required by the BCUA’s NJPDES permit.
Materials removed from wastewater are thickened, stabilized by anaerobic digestion, and stored in tanks before barging or tanker-trucked by private contractors for further treatment works in Newark, N.J. In 2008, approximately 64,210,034 gallons of Class B biosolids, at an average percent solids of approximately five percent (5%), were transported by barge or tanker truck from the Little Ferry water pollution control facility. This quantity represents a fourteen percent (14%) increase from 2007. After application of the Zimpro® treatment process to further reduce pathogens and dewatering by belt press, the Class A biosolids were transported by dump trucks from PVSC to the New Jersey Meadowlands Commission landfill in Lyndhurst, New Jersey.
Edgewater WPCF
Flow from the Edgewater WPC facility, during the year 2008 averaged 3.917 mgd with a peak daily flow of 11.8 mgd on October 19th and December 11th. Analytic analyses show the water pollution control facility is in compliance with NJPDES requirements for all parameters. Influent TSS averaged 185 mg/l and influent BOD averaged 165 mg/l. During 2008 effluent TSS averaged 17.4 mg/l and effluent BOD averaged 10.4 mg/l. Percent (%) removals were 89.7% for TSS and 93.5% for BOD. 3,622,000 gallons of 6.5% (avg.) thickened sludge was processed through the gravity belt thickener and hauled to the Passaic Valley Sewerage Commissioners for disposal.