 BCUA NewsSunday, September 21, 2008 |
2007 Operational Information Flow through the Little Ferry WPC facilities in 2007 averaged 84.196 million gallons per day (mgd). This represents less than a two percent (2%) decrease from 2006 flow records. Of the flow processed during 2007, an average of 1.031 mgd of treated effluent was supplied to PSE&G for use as cooling tower make-up water at its power generating facilities across the Hackensack River in Ridgefield. On April 15th, a peak flow of 265.7 mgd was treated during a nor’easter. 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 2007. Daily influent carbonaceous biochemical oxygen demand (CBOD) concentration averaged 191 mg/l and after secondary treatment and disinfection was discharged at 12.4 mg/l, for a removal efficiency of 93.0%. Total suspended solids (TSS) removal was 90.4% based upon a yearly average daily wastewater influent concentration of 251 mg/l and 19.5 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 by a private contractor for further treatment and dewatering at the Passaic Valley Sewerage Commissioners (PVSC) treatment works in Newark, N.J. In 2007, approximately 56,276,367 gallons of Class B biosolids, at an average percent solids of approximately five percent (5%), were transported by barge from BCUA’s water pollution control facilities. This quantity represents a twelve percent (12%) reduction from 2006. After application of the Zimpro® treatment process to further reduce pathogens and dewatering by belt press, the Class A biosolids were transported via dump trucks from PVSC to the EnCap properties in Lyndhurst, New Jersey.
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Bergen County Utilities Authority
Foot of Mehrhof Road, PO Box 9 Little Ferry, NJ 07643 201-641-2552 Copyright 2006 Bergen County Utilities Authority
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