Plant Expansion and Miscellaneous Interceptor Improvements
(PVSC) is the largest wastewater treatment facility in the Eastern United States and the fourth largest in the nation, providing an interceptor system and wastewater treatment facilities for over 1.4 million people in 48 municipalities and more than 5,000 industries and businesses in the Lower Basin of the Passaic River, from the Great Falls in Paterson to the river-mouth at Newark Bay, 156 acre site of the 125 acre PVSC Treatment Plant.
Phase I, designed by CAMCE, and the construction, provided facilities to treat an average of 300 MGD, and a maximum of 720 MGD during storms commenced in 1977 and was completed in 1981.
Phase II construction, begun in 1982 and completed in 1986, involved the construction of 12 primary settlings tanks, each 90 feet in width by 280 feet in length. Combined Sewer Overflow Study: The study included an engineering evaluation of the sewer system and regulating chambers as well as environmental assessments for the various remedial alternatives.
Interceptor Sewer Modeling and Rehabilitation of Sewers
(PVSC) is the largest wastewater treatment facility in the Eastern United States. The combined sewer system includes approximately 21.20 miles of the main interceptor ranging from 3.5 feet diameter circular in Paterson to 12.5 feet high horseshoe interceptor in Newark, and a 12-ft diameter, 5 mile long outfall terminating at Robin’s Reef in New York Harbor, 11 branch interceptors, nearly 2,000 miles of lateral sewers owned by the various contributing towns, traversing river crossings, inclusive of regulators and metering equipment, manholes, the two major upstream pumping stations at Clifton and Passaic and the main pumping station at Newark.
CAMCE conducted an engineering assessment of 150,000 linear feet of main interceptor and/or branch sewers, which were televised, after review of available data on the system a computer model of the entire system was prepared.
Phase I to III: Involved Design and Construction services provided for rehabilitation of around 9,400 ft ft. of Main Interceptors of sizes varying from 36 inches to 54 inches and 5,500 ft. of 36-inch to 54-inch diameter sewers using slip lining with polyvinyl chloride pipe; and 1,500 ft. of 30- inch to 54-inch diameter sewers using glass reinforced plastic panels, and replacement of 1,300 ft. of 24 inch diameter circular sewers.
The Current Phase IV: involves rehabilitation of 7,900 linear feet of large cross-sectional areas of the Main Interceptor ranging from 65 to 90-in heights.
Plant Expansion and Upgrade
The Linden Roselle Sewerage Authority operates a Wastewater Pollution Control Plant in Linden, New Jersey. It utilizes a two-stage biological treatment process comprised of primarily clarifiers, plastic media roughing filters, an activated sludge system with aeration tanks and secondary clarifiers. CAMCE evaluated the existing chlorine disinfection system for compliance with chlorine produced oxidants (CPO) limits. CAMCE concluded that the ultra-violet (UV) disinfection system is the most cost-effective method and would eliminate potential health and safety risks associated with the use of chlorine and sulfur dioxide for chlorination/dechlorination.
The study culminated in construction of a UV Treatment Facility, housed in the location of existing Chlorine Contact tanks. The existing chlorine contact tanks were modified to create four concrete channels, 38 feet long, 8 feet wide and 67 inches deep. Each channel was fitted with six banks of four UV modules, for a total of 96 modules. Each module consisted of 40 low pressure mercury lamps.
Rehabilitation and Replacement of Sanitary Sewers
The Town of Mount Pleasant undertook the cleaning and rehabilitation/replacement of the existing sewers in order to improve their sewer system. CAMCE was instrumental in design and construction of the rehabilitation of the sections of sewer slated for rehabilitation/replacement based upon the results of a television inspection.
Phases I through IV entailed television inspection, cleaning and rehabilitation of approximately 55,700 linear feet of 8-inch diameter various types of sewer lines with cured in place liner, and replacement for 500 linear ft. of 6-inch diameter vitrified clay pipe (VCP) sanitary sewer line with 8 in. diameter VCP Pipe utilizing pipe bursting technology. CAMCE is currently working on Phase V, which entails cleaning, television inspection and rehabilitation of approximately 30,000 linear feet of 8-inch dia. various types of sanitary sewers with cured-in-place liner, and television inspection of additional 50,000 linear feet of sanitary sewers to assess their condition for rehabilitation in future.
Plant Expansion and Upgrade
The NMCRSA wastewater treatment facility services an area of 35 square miles, consisting of six communities, various industrial customers and two military bases. The facility opened in 1971, and was designed for a 1985 average flow of 10 MGD, but reached its rated capacity by 1991. CAMCE, was retained by the authority to prepare the preliminary design of expansion and upgrade from 11.4 MGD to 17.23 MGD.
CAMCE prepared a design report for improvement to the plant. A process/flow model was prepared for the existing plant and for the proposed additional facilities for expansion and upgrade, as was a hydraulic profile. The report evaluated alternative treatment processes and made final recommendations in the form of a preliminary facility design. This included design of Main Pumping Station, Headworks, Aeration System, Final Clarification System, Effluent Filters, Effluent Pump Station and Non-potable Water System, Sludge Processing system, and Odor/VOC Control systems. A detailed capital and operating cost was developed for the proposed improvements.
Design of Sewage Treatment Plant Modifications
The EPA presented the Award for Operations and Maintenance Excellence to the Authority for their upgraded facility which was designed by CAMCE, the said design being an upgrade of the existing primary sewage treatment plant to a tertiary plant with a capacity of 1.3 MGD.
The improvements included modifications to the two primary settling tanks and pumping station, and primary settling tanks were redesigned, and a new aerated grit chamber, two four-stage rotating biological contactors, two final settling tanks, a tertiary filtration system, an effluent pumping station, chlorination facilities, a new service building and a primary and secondary digester facility were constructed.
Existing and Proposed Improvements to the Septage Receiving Station
CAMCE has been involved with the City of Rome's wastewater treat¬ment facilities since 1965. We constructed a Septage Receiving Station (SRS) for City residences without sewers and eventually enlarged for the Outer Corporation limits within the City. We are presently proposing, under a NYSDEC Consent Order, to modify and improve the SRS to include better grit handling, aeration, chemical additions and flow monitoring. Work under the Consent Order is part of an update of the City's Pretreatment Program referred to as "Head Works" analysis.
The proposed improvements include a new Chemical Feed System consisting of storage tanks and chemical feed pumps. In order to expand the plant, the first step was to rehabilitate the head end facilities without increasing the hydraulic surcharging of the interceptor system. This task was accomplished by adding a new grit removal system of the same type in addition to the existing system. The renovation included the use of hydraulic grit equipment, control of dispersion into the primary settling tanks and the provision for additional grit washing facilities to accommodate the plant's current and future capacity.
Wastewater Pretreatment System
This project involved conducting a wastewater treatability study and based on the results, subsequently designing a wastewater pretreatment system for this facility. The pretreatment system generates high strength, high variability wastewater from the daily washing of as many as one hundred tanker trucks.
The approach which was adopted was two pronged. First, it was demonstrated to the local Publicly Owned Treatment Works (POTW) that higher loadings could be handled by the facility without adverse impacts on the current treatment process. Secondly, a treatment system which chemically conditions and clarifies the wastewater by means of dissolved air floatation, was installed in order to reduce the loadings and remove any free oil from the stream.
After two years of successful operation, as per the requirements at that juncture, an ultra filtration system was evaluated and found to be capable of treating the wastewater to quality levels that would permit recycling. Recycling would not only allow the facility to function as a closed loop operation, recovering a substantial portion of the cleaning products for future use, but would also eliminate the costs associated with the wastewater discharges.
Design, Permitting and Construction Administration of Combined Sewer Overflow [CSO] Floatables/Solids Control Netting Facilities
The City of Paterson is served by a combined sewer system which conveys both wastewater and storm water to the Passaic Valley Sewerage Commissioners Transport System. During storm events the excess combined flows are diverted to the Passaic River at the regulators via outfall pipes. The “Sewerage Infrastructure Improvement Act” (SIIA), passed by the New Jersey State Legislature in 1989, required planning, design and construction of facilities to reduce floatables/solids from the combined sewer overflows.
Designed netting facilities at seven outfalls (with design flows of 20 MGD to 90 MGD) and two CSO diversions to control floatables/solids at nine overflows.
Design of Combined Sewer Overflow Netting Facilities at five outfalls to the Passaic River in various roadways and easements within the City of Paterson; Replacement of 425 linear feet of 20x30 inch diameter Vitrified Clay Pipe (VCP) sanitary sewer with 30 inch RCCP class UV pipe, manholes, inlet chambers, and appurtenances.