June 2012, Vol. 24, No.6

Projects

The Kallang River at Bishan Park in Singapore has been transformed from a linear utilitarian concrete drainage channel into a meandering, natural river landscape. CH2M Hill (Englewood, Colo.) partnered with Atelier Dreiseitl (Singapore) to create an integrated approach to waterway management for the ABC Waters Programme that incorporates engineering, science, landscape design, the behavioral framework of urban design, and a commitment to community involvement. The park officially opened March 17.

The Kallang River–Bishan Park project transformed 3 km (1.9 mi) of Singapore’s longest river into a natural river with bioengineered slopes and landscaped banks. The new river teems with life and showed a 30% increase in biodiversity even before construction was completed.

Soil bioengineering techniques have stabilized the river banks to withstand strong flood flows and support flora and fauna. The floodplains provide generous open space for recreation. In a heavy downpour, the park functions like a natural river plain, enabling river water to spread and providing friction to slow the water. This reduces the hydraulic overload of the river in more-dense urban areas downstream.

 

Kruger Inc. (Cary, N.C.) received a contract to furnish a 14,800-m3/d (3.9-mgd) Hydrotech Discfilter system for the wastewater treatment plant improvements project in Princeton, Minn. SHE Inc. (St. Paul, Minn.) provided engineering for the project. Kruger will install two Hydrotech Discfilter tertiary filtration units to meet stringent effluent total phosphorus limitations. The new system is expected to be operational this fall.

 

WesTech Engineering Inc . (Salt Lake City) has increased treatment capacity by 655,000 m3/d (173 mgd) at the Miami–Dade (Fla.) South District Wastewater Treatment Plant. The company supplied four new 59-m-diameter (195-ft.-diameter) clarifiers and retrofitted six additional clarifiers with the proprietary Clarifier Optimization Package (COP™) design. The plant had a peak flow capacity of 424,000 m3/d (112 mgd). With the new clarifiers, the plant’s peak flow capacity increases to about 1 million m3/d (285 mgd).

 

The Charlotte County (Fla.) Public Works Solid Waste Division signed a 20-year agreement with Synagro Technologies Inc. (Houston) to develop a regional biosolids and green-waste biorecycling center at the Zemel Road landfill near Punta Gorda, Fla. The company will design, finance, build, and operate a covered-windrow composting facility that will recycle approximately 45,000 Mg/yr (50,000 ton/yr) of biosolids. The Class AA compost from the facility can be used by public works agencies to maintain playing fields, golf courses, and community plantings and to repair construction sites.

Construction is expected to begin this year, with full operation beginning by year’s end, pending approvals from the Florida Department of Environmental Protection.

 

BioShaft Water Technology Inc. (Lake Forest, Calif.) received several contracts to install its wastewater treatment and recycling systems in the Middle East.

The King Abdullah New Financial District in Riyadh, Saudi Arabia, will receive a residential/institutional Turbo Moving Bed Bio-Reactor (T-MBBR) system that will treat 500,000 L/d (132,100 gal/d) of domestic wastewater from a housing complex.

Jeddah Gates in Saudi Arabia will receive a temporary packaged, containerized T-MBBR system that will treat domestic wastewater from a high-rise tower. The system has a capacity of 208,000 L/d (55,000 gal/d).

EMMAR Middle East, a large development company in Dubai, United Arab Emirates, will receive a mobile temporary system to treat domestic wastewater for a residential development that is not connected to a municipal sewer.

 

The Boston Water and Sewer Commission (BWSC) has selected FlowWorks (Seattle) to provide tools to help organize data from three different management platforms to better understand stormwater and flood events. The tools will enable BWSC to investigate the dynamics of rainfall, trunk flow and level, and pressure fluctuations in real time to better understand the causes of basin flooding.

Flow Assessment Services (Bedford, N.H.) provides flow-monitoring services to BWSC under contract and will perform all data acquisition field services and quality assurance/quality control for the project.

 

Freedom Environmental Services Inc. (Orlando, Fla.) announced that through its subsidiary, Brownies Wastewater Solutions Inc., it has signed an agreement to provide service for Universal Studios Florida, Universal Studios Islands of Adventure, and Universal CityWalk. The agreement includes servicing all of the stormwater, grease traps, and lift stations and performing all of the high-pressure water-jetting.

 

The Guodian Northeast Environmental Protection Industry Group Ltd., a subsidiary of China Guodian Corp. (Beijing), has selected Siemens Industry Automation Division (Nuremberg, Germany) to supply an IPS composting system using the new mechanically enhanced biodrying (MEB) process for the Shenyang (China) Wastewater Treatment Plant Sludge Treatment Project. According to a Siemens press release, it will be the largest IPS composting facility ever built and one of the largest solids treatment processes in the world using nonthermal processing. The IPS composting system is scheduled to be commissioned this fall.

The new system will be used in a solids treatment facility that will serve three existing wastewater treatment plants and one new plant. The plants have been landfilling or land-applying wastewater residuals with 20% solids. China recently passed a law that residuals must be a minimum of 60% solids for land application and/or landfill disposal.

The Shenyang plant is designed to dewater 1000 wet Mg/d of wastewater residuals. The residuals will go from 20% solids to 65% solids without adding heat. Also, with the MEB process, there is no need to add a significant amount of carbon-rich amendment or bulking agent. For this application, the design basis is to use less than or equal to 2% (by weight) corn waste as amendment. An accelerated maximum processing time of 22 days is expected, even in cold weather application.

 

The Las Vegas Valley Water District signed a 1-year service agreement with Echologics (Mississauga, Ontario) for leak-detection and condition-assessment services. The company is a developer and provider of acoustic-based technologies for water loss management, leak detection, and pipe-condition assessment.

The agreement is the result of a successful pipe-condition assessment pilot project completed last fall. The pilot included noninvasive testing of a 10.5-km (6.5-mi) span of 400- to 600-mm (16- to 24-in.) mortar-lined steel cylinder pipe that runs beneath some of Las Vegas’ most popular thoroughfares. Prior to the pilot, the water district expected it would have to replace the entire span of pipe. However, the acoustic survey found that only 15% to 20% of the pipes had lost a significant amount (more than 15%) of their original wall thickness to corrosion and other factors.

 

The Blackfeet Nation in Montana has signed a letter of commitment with Ecosphere Energy Services LLC (Conway, Ark.) and its sublicensee, Hydrozonix LLC (McKinney, Texas). The company will provide Ecosphere’s Ozonix™ water treatment services to oil and gas companies conducting hydraulic fracturing operations on the 7770-km2 (3000-mi2) Blackfeet reservation. These companies will be the exclusive provider of water treatment services on the reservation.

Operators will receive a nonchemical approach for treating and reusing 100% of their flowback and produced waters on the reservation. The treatment will eliminate the need to truck wastewater to disposal sites off reservation, improving the economics of shale-oil and gas exploration on the reservation.

 

The New York State Energy Research and Development Authority (ERDA) gave funding to Rentricity Inc. (New York) to develop product designs to generate renewable energy from the flow of water through wastewater treatment plants. The company will work with the New York City Department of Environmental Protection, using the city’s Wards Island, Coney Island, and Owls Head wastewater treatment plants to facilitate the designs.

The project began in March and is slated to run through December. It includes assessing the mechanical, electrical, and process control needs for the PowerGate™ and PowerWeir™ energy recovery configurations that would generate renewable energy in wastewater conduits. This project builds on an earlier ERDA grant Rentricity received in 2010 that reviewed the structural components and energy availability at six New York City wastewater treatment plants.

 

The City of Baltimore is predicted to save more than $6 million during the life of a recently completed 1-MW solar panel installation at the Back River Wastewater Treatment Plant. The project also supported the local economy by creating 75 jobs during construction.

As part of a performance contract with Johnson Controls (Milwaukee), the installation is helping the city reach its goal of generating 30% of its own electricity, according to a Johnson Controls press release. The project also aligns with the EmPOWER Maryland initiative led by Gov. Martin O’Malley, as well as with Baltimore’s sustainability goals. Subsidized in part by a $900,000 Maryland Energy Administration Project Sunburst grant, the system can generate 1000 kWh per hour.

 

Lucid Energy (Portland, Ore.) in April officially opened its first Center of Excellence and celebrated the first commercial installation of the LucidPipe™ Power System at Riverside (Calif.) Public Utilities. The in-pipe hydropower system, which was developed in conjunction with Northwest Pipe Co. (Vancouver, Wash.), is operating inside a 1050-mm (42-in.) water pipeline at Riverside Public Utilities. The system has produced 8140 kWh of energy since its installation in January.

The new Center of Excellence in Riverside is designed to help prospective customers, partners, academics, and other industry leaders in the water and energy sectors learn about the in-pipe hydropower system and its patented spherical vertical-axis turbine. The technology is designed to capture energy from fast-moving water inside pipelines to produce clean, reliable, low-cost electricity.

Lucid Energy recently agreed to terms with the San Antonio Water System to begin construction of the next Center of Excellence in San Antonio later this year. The company also is collaborating with the Advanced Energy Research and Technology Center at Stony Brook (N.Y.) University to design and operate a Center of Excellence in New York in the coming year.

 

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