May 2011, Vol. 23, No.5

Projects

Construction has begun on the $22.3 million Grandville Clean Water Plant Expansion in Grandville, Mich. The expansion of the plant will enable it to process an average of 37,900 m3/d (10 mgd) and effectively serve the city of Grandville and its customer communities for the next 20 years. Moore & Bruggink Consulting Engineers (Grand Rapids, Mich.) is providing design and construction engineering services, and Grand River Construction is the general contractor on site.

The expansion includes new headworks facilities for screening and grit removal, as well as new primary settling tanks, aeration tanks, final clarifiers, and ultraviolet disinfection. It also includes the first egg-shaped anaerobic digester in Michigan for stabilizing the plant’s solids.

The digester is being constructed by CB&I (Bolingbrook, Ill.). It will produce biogas, which will be captured, cleaned, and used in a cogeneration facility to create power and heat to run the process. The power generated will supply approximately 30% to 40% of the plant’s electrical energy needs. Heat from the cogeneration unit will be used to maintain the digester’s operating temperature and provide heat for the new laboratory operations center. This is Grandville’s first sustainable energy design project.

 

The City of Winston–Salem and Forsyth County, N.C., selected to upgrade their metering infrastructure with an automated meter-reading system, provided by Mueller Systems (Middleboro, Mass.). The project, which was slated to begin earlier this year, includes installing 118,000 water meters and Hot Rod™ transmitters throughout Forsyth County.

Currently, it takes 11 readers 3 days to manually read an entire billing cycle of approximately 7500 accounts. By using the automated system, it will only take one reader 1 day.

 

The City of Dallas Water Utilities has selected Televent (Rockville, Md.) to collaborate with Prime Controls (Lewisville, Texas) to implement a data technology system, which will enable the utility to increase control capabilities throughout its water network and add remote monitoring and automation for multiple pump stations, storage tanks, and water meter stations. With the system in place, the utility will be able to gather a more accurate analysis of data critical to its operational decision-making and react more quickly when unforeseen situations arise within its growing network, according to a Televent press release.

 

To ease the burden on its groundwater supply, Visalia, Calif., is upgrading its wastewater treatment plant to provide reclaimed water for a number of additional uses, such as golf courses and agricultural areas. The upgraded plant will use membrane bioreactor technology featuring GE (Trevose, Pa.) ZeeWeed reinforced, hollow-fiber membranes. The Visalia plant will be the largest membrane bioreactor plant in California — water discharge requirements limit the flow to 75,700 m3/d (20 mgd) on average — when it enters service in 2013.

 

The Cincinnati Nature Center has elected to install an AlgaePac packaged wastewater treatment system at its Rowe Woods location in Milford, Ohio. The system, manufactured by Oldcastle Precast (Auburn, Wash.), is the first of its kind to be installed in Ohio. The manufacture and construction of the system is anticipated to be complete this spring.

The system features patented technology that provides a diverse ecological environment for tertiary wastewater treatment by using a symbiotic relationship between algae and bacteria. Algae grow in the system by converting nutrients (nitrogen and phosphorus), sunlight, and carbon dioxide to algae and oxygen. The oxygen is used by bacteria in the system to digest solids and produce more carbon dioxide for use by the algae.

The engineer for this project is Civil and Environmental Consultants Inc. (Cincinnati).

 

Carmel Olefins Ltd. (Haifa, Israel), Israel’s sole manufacturer of petrochemical products that are used as raw materials for the plastics industry, installed a disc filtration technology system for its cooling-water towers. In February, Amiad Filtration Systems (Kibbutz Amiad, Israel), which manufactures the filters, completed the installation and preliminary testing.

The all-polymeric filtration system uses grooved discs and combines low-pressure backwash of 2 bar with a filtration level of 55 µm. This level of treatment is designed to prevent the clogging of heat exchangers, a significant consideration for the plant’s manufacturing process.

 

The Al Montazah Company for Tourism and Investment (Alexandria, Egypt) has selected Koch PURON® membrane bioreactor (MBR) modules for onsite wastewater treatment at new resorts it is building. The resorts will be located in Sharm El Sheikh, Egypt, which is on the Sinai Peninsula’s southern tip along the Red Sea coastal strip.

The MBR system was chosen because it has a small footprint, is less visible, provides effluent water suitable for reuse, and is modular to accommodate future expansion. The MBR system will enable treated effluent to be used for irrigation and conserve the arid region’s scarce water resources. The plant’s first phase is designed for an annual average flow of 5000 m3/d. Startup of the MBR is scheduled for the end of 2011.

TAM Environmental Services (Cairo) was chosen to design the system.

 

Clean Water Services (Hillsboro, Ore.) will install its second Pearl® Nutrient Recovery System at its 148,000-m3/d (39-mgd) Rock Creek Advanced Wastewater Treatment Facility in Hillsboro. The system, manufactured by Ostara Nutrient Recovery Technologies Inc. (Vancouver, British Columbia), is designed to recover up to 95% of the phosphorus and 20% of ammonia from the liquid wastewater stream at the Rock Creek facility.

The recovered nutrients are transformed through a chemical reaction into a slow-release fertilizer marketed as Crystal Green®. The Rock Creek facility will have the capacity to produce 1090 Mg (1200 ton) of fertilizer per year.

Construction is slated to begin this summer as part of a plant expansion and is expected to be fully operational by fall.

 

Aqua–Chem Inc. (Knoxville, Tenn.) completed a pilot project with J&J Industries (Dalton, Ga.) that demonstrated removal of dye and other additives from industrial wastewater and reuse of the water in carpet dyeing. The pilot project demonstrated that 70% of wastewater effluents from dyeing operations can be reused in the manufacturing process. The full-scale system incorporating Aqua–Chem’s technology is projected to recover 90% of wastewater.

 

The Buckman Street Water Reclamation Facility operated by JEA (Jacksonville, Fla.) will be the site of a new odor-control project designed and engineered by BioAir Solutions (Voorhees, N.J.). The three-part installation of EcoFilter® units is designed to remove 99% of the hydrogen sulfide and more than 90% of the odors from the facility.

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