December 2013, Vol. 25, No.12

Projects

Northumbrian Water (Durham, England) installed screw blower technology by Atlas Copco (Stockholm) at its water resource recovery facility (WRRF) in Newton Aycliffe, County Durham, England, to help reduce energy consumption and minimize service costs.  

 Northumbrian Water needs a constant, reliable supply of air in the region of 480 mbar for aerobic treatment of wastewater at the Newton Aycliffe WRRF. (The biological process typically uses up to 70% of the energy consumed on site.) To help achieve this, the utility decided to replace a lobe blower with the Atlas Copco ZS screw blower technology. On completion of the installation of the new ZS blower, Northumbrian Water carried out a comparison performance test between the existing lobe blowers and Atlas Copco’s ZS technology. It revealed that the existing lobe blower used approximately 19% more power for the same output.  

Based on these test results and continuous reliability issues with the lobe blowers, the utility decided to replace a second lobe blower with an Atlas Copco ZS90-VSD, low-pressure, oil-free rotary screw blower. Northumbrian Water now has placed a third order with Atlas Copco to replace the remaining two lobe units installed at the WRRF with a further two ZS 90 screw blowers. 

  

Veolia Water (Paris) has begun the operational management of the Northern West Virginia Water Treatment Facility owned by CONSOL Energy Inc. (Canonsburg, Pa.) and located near Mannington, W.V. The zero-liquid waste (ZLW) facility, which was designed and built by Veolia, will treat 13,200 L/min (3500 gal/min) of mine drainage. By employing a ZLW process, treated wastewater is returned to the ecosystem, improving the water balance and condition of the Monongahela River watershed.  

Veolia will provide operational management of the facility for the next 10 years, guaranteeing CONSOL continual performance and optimization of the system. The ZLW treatment removes contaminants from the mine water and reduces them to solid salts. The process also uses a number of sustainable practices and technology applications to reduce its carbon and energy footprints.  

This environmentally sustainable design and construction approach was developed to help CONSOL meet discharge standards for chlorides in West Virginia’s waterways. The facility will treat water from CONSOL’s Blacksville No. 2, Loveridge, and Robinson Run mining operations. 

  

The Metropolitan Water Reclamation District of Greater Chicago (MWRD) awarded Black & Veatch (Overland Park, Kan.) and Ostara Nutrient Recovery Technologies (Vancouver, British Columbia, Canada) a contract to design and build a new nutrient recovery system at the Stickney Water Reclamation Plant in Cicero, Ill. Black & Veatch is providing design, procurement, and construction services. Ostara will provide the nutrient recovery system, including equipment, as well as operations and maintenance assistance to MWRD once the project is completed. 

Ostara will contract with MWRD to purchase the recovered nutrients, which it markets to commercial fertilizer blenders and distributors in the agriculture, turf, and ornamental sectors. 

The new facility is scheduled for completion in 2015. Construction of the new stand-alone phosphorus recovery facility will not interrupt the facility’s operation and will connect to the existing water resource recovery facility, requiring only short-duration shutdowns of ancillary processes. 

  

ACCIONA Agua (Madrid) chose Energy Recovery (San Leandro, Calif.) to provide its PX® Q line of energy recovery devices for the United Arab Emirates’ Fujairah 1 Expansion desalination project. With the PX Q technology, the plant will conserve 83,000 tonne of carbon dioxide annually, amounting to 140 million kWh of energy savings and more than $14 million in cost savings annually. 

Fujairah 1 Expansion is the longest running hybrid seawater desalination plant in the Middle East, combining thermal and reverse-osmosis technologies. This project will increase water production by 136,500 m³/d, totaling the plant’s production capacity to 592,000 m3/d.  

In choosing Energy Recovery’s PX Q technology, ACCIONA’s objectives were to lower the power consumption of water production for the user and to reduce the physical footprint of the energy recovery device trains. The new facility will use an isobaric design, allowing the user to produce water at net-lower power consumption. 

  

U.S. Army Corps of Engineers selected Infilco Degremont Inc. (Rueil-Malmaison, France) to design and supply Climber® Screen mechanical bar screens for the Corps’ Permanent Canal Closures and Pumps (PCCP) facilities near Lake Pontchartrain in New Orleans. 

As part of this effort, the company will design and supply 17 mechanical bar screens for channel debris removal, which will provide frontline protection and safeguard the integrity of three pump stations. The massive screens will handle an aggregate flow of 5,940,000 m3/d (1570 mgd) and will vary between 7.3 and 8.8 m (24 and 29 ft) in width. With 17 units each reaching a depth 15 m (48 ft), PCCP will be one of the largest screening projects undertaken by Infilco to date.  

  

BCR Environmental (Jacksonville, Fla.) installed a Neutralizer® system at the City of Deltona’s (Fla.) Greenfield Eastern Water Reclamation Facility in Florida. BCR’s Neutralizer is a scalable, environmentally responsible, and cost-effective solution to managing wastewater residuals. The final product produced by Neutralizer treatment is a high-quality soil amendment suitable for a variety of agricultural and landscaping applications. 

The City of Deltona chose the system over thermal dryers, lime stabilization, pasteurization, and traditional digestion. City staff and consulting engineers determined that the Neutralizer had the lowest overall life-cycle costs and provided superior odor management, regulatory compliance, and solids volume reduction. 

  

Envirogen Technologies Inc. (Kingwood, Texas) announced the startup of a large-scale fluidized bed bioreactor (FBR) system for American Pacific Corp. (AMPAC; Las Vegas), to achieve the biodegradation of perchlorate and other constituents from groundwater in the area of a former manufacturing facility in Henderson, Nev.  

The 4500 m3/d (1.2 mgd) capacity system replaces a smaller biological system that had been in service since 2006, and uses Envirogen’s patented FBR technology in a custom configuration to reduce influent concentrations of perchlorate of up to 500 ppm to nondetectable levels prior to surface discharge. 

With this FBR installation, Envirogen was able to meet AMPAC’s target treatment goals for perchlorate as well as chlorate and nitrate, while fine-tuning the equipment to provide them with the lowest-cost performance possible. The technology also has the potential to treat other contaminants, such as selenium, hexavalent chromium, or chlorinated solvents. 

  

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