Koch Membrane Systems retrofits water treatment plant with TARGA II cartridges

Koch Membrane Systems started up the initial phase of its retrofit to the ultrafiltration system at the City of Del Rio, Texas water treatment plant. The full project is to be completed over the course of a year. The filters replace membrane cartridges that had reached end of life. Testing determined that a retrofit of TARGA II UF membranes could be implemented with minimal modification to the existing system and at reasonable cost.

Xylem to supply Flygt pumps to Europe’s largest wastewater treatment plant

Xylem won a contract to supply its Flygt submersible pumps and monitoring and control technology as part of a project to upgrade Europe’s largest (and the world’s second largest) wastewater treatment plant near Paris. Xylem will supply 94 Flygt submersible column pumps, 32 centrifugal pumps, 15 pumps equipped with ejectors, and related accessories to recirculate, mix water and sludge feed the facility’s biological tanks with wastewater. The Achères Seine Aval treatment plant handles about 400 mgd.

Project using Aqua-Aerobic Systems cloth filters wins engineering award

The CP&Y consulting firm received a National Grand Award from the American Council of Engineering Companies for work on the San Antonio Water System’s Dos Rios Water Recycling Center Tertiary Filters Project. SAWS sought to double capacity and replace existing tertiary filters. To reduce costs, CP&Y adapted AquaDiamond cloth media filters from Aqua-Aerobic Systems into the existing structure, doubling capacity within the same footprint.

Echologics completes condition assessment of Boston transmission and distribution mains

Echologics completed a condition assessment survey of several distribution and transmission mains owned by Boston Water and Sewer Commission using its ePULSE noninvasive acoustic pipe condition assessment technology. The project included corrosion assessments of several large-diameter steel mains and of ductile iron pipe in one neighborhood. The ePULSE solution measures the remaining average wall thickness of selected pipe segments and can simultaneously identify leaks. Municipalities can use the information to mitigate risks from deteriorating pipe walls, reduce non-revenue water and prioritize repairs and replacement.

Gadsden dedicates North America’s largest MIEX treatment facility

The Gadsden (Ala.) Water Works and Sanitary Sewer Board dedicated a new MIEX water pretreatment plant, the largest of its kind in North America. Named for the city’s first water works manager, the C.B. Collier Water Treatment Plant uses the advanced MIEX process developed by Orica Watercare, which removes the organic precursors that lead to disinfection byproduct formation. The process has removed about two-thirds of the regulated compounds from the finished water, exceeding anticipated results. Flows average 10 to 12 mgd with capacity for 24 mgd. The excess capacity enables the city to support industrial growth.

Terratec awarded biosolids contract for Ontario Clean Water Agency

Terratec Environmental, a division of American Water’s market-based subsidiary, American Water Enterprises, won a three-year contract from the Ontario Clean Water Agency for removal, haulage and utilization of biosolids. The $200,000 contract includes removal and land application of biosolids from various wastewater treatment plants in the Ottawa Valley area.

CH2M HILL completes Wilsonville DBO water project on time and under budget

The City of Wilsonville, Ore., completed its new wastewater treatment plant under a $42 million design-build-operation project by CH2M HILL. Work was completed ahead of schedule and under budget. The plant was rebuilt, upgraded and expanded to include modern treatment technology, a new odor system and increased capacity from 2.5 to 4 mgd, with expansion capabilities to 7 mgd. The upgrade included a headworks building and a biosolids dewatering and drying building to produce Class A biosolids. CH2M HILL took over plant operations in September 2011 and will operate it for the next 20 years.

Kruger installs system with ACTIFLO CARB, Hydrotech Discfilter and polymeric membranes

Kruger, part of Veolia Water Technologies, won a contract from the Harpeth Valley Utilities District in Nashville, Tenn., to furnish the water treatment plant with a 23 mgd ACTIFLO CARB system and two 23 mgd Hydrotech Discfilter units for the first two stages of treatment, sending highly filtered effluent to third-stage polymeric membrane microfiltration. The ACTIFLO CARB process combines microsand ballasted clarification with adsorption on powdered activated carbon to remove organic matter, taste and odor compounds, endocrine disruptors and pesticides. The compact and energy-efficient Hydrotech Discfilter produces high-quality effluent despite high solids loadings and upset conditions.

Bridgeport pollution control authority enters wastewater treatment partnership

The Water Pollution Control Authority of the City of Bridgeport, Conn., selected Severn Trent Services to provide long-term operation, maintenance, management and customer services for its wastewater collection and treatment systems through a public-private partnership. The 10-year contract includes two subsequent five-year options. The authority’s system includes two wastewater treatment facilities with 40 mgd total capacity; 10 sewage pump stations; and 283 miles of sewers, 123 miles of which are combined. The system serves a population of 175,000.

Parkson delivers headworks sluice to manage solids from screens to disposal

Parkson Corp. is redesigning the headworks at the Missouri River Wastewater Treatment Plant in Omaha, Neb., to implement a sluiced screenings system that will improve operators’ ability to manage wet-weather conditions and reduce maintenance. The design is built around the Aqua Guard Model S screen and Aqua WashPress washer compactor. From the screens, the sluice system will transfer screenings to the Aqua WashPress units, where the solids can be deposited at a more convenient location for workers.

Layne Christensen Heavy Civil Division wins $24 million in contracts

Layne Christensen Company’s Heavy Civil Division received two water infrastructure contracts worth a combined $24 million. The company will construct a state-of-the-art water treatment plant for the City of Roswell, Ga., expanding water capacity to 3 mgd and saving the city a projected $11.6 million over 20 years by reducing outside water purchases, and lowering repair and refurbishment expenses. The Heavy Civil and Inliner divisions are collaborating on a multifaceted project to improve water infrastructure for the Skyview Utilities system in Lakeland, Fla. The project includes a new wastewater treatment system, replacement of outdated water distribution facilities and construction of new water distribution piping. Work on both projects began in May.

GE technology to help remove toxic metals from wastewater at Canadian coal mine

The Anglo American mining company chose the Advanced Biological Metals (ABMet) removal process technology from GE to remove nitrate and selenium from wastewater at its Peace River Coal Trend Mine in Tumbler Ridge, British Columbia. The facility is turnkey, providing a flexible solution for heavy metal removal to meet stringent provincial standards for selenium and nutrient discharges. The ABMet process uses naturally occurring microbes to reduce selenium and other metals. It involves running wastewater through a biologically active filter seeded with microbes that target selenium and other metals. The plant is designed to treat 380 gpm, reducing nitrates from 85 mg/L to 3 mg/L and selenium from 130 µg/L to 5 µg/L.

Anaergia chosen to build biogas upgrading facility in Pima County

Anaergia and its project partner Grannus entered negotiations with the Pima County Regional Wastewater Reclamation Department in Arizona to design, build, finance, own and operate a large-scale biogas upgrading facility that produces a renewable biomethane. The department operates nine wastewater treatment facilities. Most biosolids are transferred to a central handling and treatment facility, where anaerobic digestion produces biogas. The project goal is to create a marketable biogas that generates revenue and can offset wastewater treatment costs.

Nation’s largest fluoride treatment plant awards contract to Severn Trent Services

Severn Trent Services was selected to provide its SORB 09 fluoride removal system to the Andrews Fluoride & Arsenic Treatment Plant in Andrews, Texas. The system will have a capacity to treat up to 5,000 gpm, enabling the city to remove fluoride and arsenic to below minimum drinking water standards of 2.0 ppm. The SORB 09 fixed-bed adsorption technology removes fluoride from the water onto solid activated alumina. Treatment will be conducted with a downward flow through four adsorber vessels in parallel configuration.

World’s largest UV disinfection facility wins Best of the Best Projects Award

The New York City Department of Environmental Protection Catskill-Delaware Ultraviolet Disinfection Facility, the largest ultraviolet water treatment facility in the world, won a 2013 Best of the Best Projects Award from Engineering News-Record (ENR) magazine. The facility qualified after winning New York’s 2013 Best Projects Award from ENR. CH2M HILL, in partnership with ARCADIS, was construction manager on the project.