Municipal Wastewater Insights

No. 4    February 2012






The following insights can be sent to you periodically.. This is aimed at end users as well as suppliers. Other newsletters include Sedimentation/Centrifugation, Liquid Filtration, Pumps, Valves, Wastewater Treatment Chemicals, Scrubber/Adsorber and Cartridges. You can sign up for any of these newsletters and of course request to be removed from the mailing list at any time. See registration following the newsletter.




·        Lots of Worldwide Activity

·        February 2012 North American Project News

·        Town of Trumbull Pump Optimization Project Yields $60,000 Net Present Value

·        Parma West Plant Replaces Mechanical Aeration System and Reduces Energy Consumption by 40 Percent

·        Municipal Wastewater Plants Will Spend $1.1 Billion This Year for Centrifuges and Clarifiers


Lots of Worldwide Activity

Croatia: €3.5 Billion in Water and Wastewater Projects Needed to Join EU


Nikola Ruzinski, former Croatian secretary for environmental protection, recently announced that Croatia will need direct investments of around €10.5 billion (US$14 billion) to incorporate the EU’s environmental protection regulations.  Croatia voted in favor of joining the European Union by a 2-1 margin in January and is expected to formally join the EU on July 1, 2013.  Environmental protection and agriculture are expected to be the most expensive areas of EU harmonization. 


Of the €10.5 billion total, wastewater treatment and sewage will require around €3.5 billion (US$4.6 billion), water supply €1.7 billion, waste management €2 billion, and reduction of industrial air pollution €2.5 billion. The remaining amount will go to nature preservation, monitoring and other necessary investments.  The Environmental Ministry expects most of the money to be offered from EU’s structural and cohesion funds.  


 Qatar:  CH2M Hill Selected to Oversee US$3.3 Billion Doha Sewerage Project

The Public Works Authority of Qatar (Ashghal) has selected CH2M Hill to oversee a QAR12 billion (US$3.3 billion) sewerage project that will overhaul wastewater services in developing areas of Doha.  The Inner Doha Re-sewerage Integrated System (IDRIS), due for completion by 2019, will deal with an area of the capital which is expected to experience an infrastructure boom over the next decade. 


The project will include construction of a major wastewater treatment plant south of Doha, as well as piping, pumping stations, an ocean outfall and treated sewage effluent (TSE) return mains.  The capacity of the plant has not yet been determined, but is expected to be in the range of 80,000 – 400,000 m3/day (20 to 100 MGD).  CH2M Hill’s contract is valued at QAR225 million (US$62 million).



Qatar:  Metito Begins Work on Three Major Sewage Treatment Projects


Dubai-based Metito, a leading player in water, wastewater and desalination solutions, has begun work on three new sewage treatment projects in Qatar, totaling QAR149 million (US$40 million).  All of the projects are scheduled for completion by the end of the year.  The projects include:


·         An expansion of the existing Industrial Area Sewage Treatment Plant and the addition or tertiary treatment, QAR99 million (US$27 million).  The plant’s capacity will be expanded by 12,000 m3/day (3.2 MGD) with the addition of a sequencing batch reactor (SBR) system.  A new ultra-filtration system with a capacity of 24,000 m3/day (6.4 MGD) will provide tertiary treatment for the existing treatment plant, as well as the new SBR, and will produce water suitable for irrigation.


·         A closed-loop sewage tanker reception facility at the Doha West Sewage Treatment Works, QAR40 million (US$11 million).  The facility will be designed to receive 50,000 m3/day (13 MGD) of sewage in reception stations or bays, followed by balancing and pumping to the existing treatment plant.


·         The design and construction of three mobile sludge dewatering units, QAR10 million (US$3 million).  The public works authority, Ashghal, will be able to use the containerized trailer- mounted units at STPs throughout Qatar, as needed.



Saudi Arabia:  National Water Company to Spend US$933 Million on Wastewater Projects in 2012


Saudi Arabia’s National Water Company (NWC) spent SAR 4.3 billion (US$1.2 billion) on 66 new wastewater projects in 2011, and plans to spend an additional SAR 3.5 billion (US$933 million) on 31 new projects this year.  Chief among them is completion of the wastewater system in Jeddah, where some 3.8 million people had previously relied on septic tanks and tanker transport for sewage disposal.  The largest wastewater projects include:


·         Al Kharj Phase III, 200,000 m3/day (53 MGD), awarded to the local Al Arrab contractor in November

·         Manfouha expansion, 150,000 m3/day (40 MGD), in bidding

·         Jeddah Airport Phase II, 500,000 m3/day (132 MGD), in the prequalification stage

·         Arana (Mecca), 200,000 m3/day (53 MGD), in planning

·         Al Hayer Phase II, 400,000 m3/day (105 MGD), in planning


In a new technical development for the Kingdom, future wastewater treatment plants will be installed with biogas power generating facilities designed to generate 2 to 10 MW of power.  The new plants will also be expected to sell treated sewage effluent to industrial customers to generate additional revenues.  Saudi Arabia is beginning the process of privatizing its water and wastewater operations this year, and revenue sources will be important to potential concessionaires.


 February 2012 North American Project News


Here are the headlines in the biweekly updates to the McIlvaine North American Municipal Wastewater Treatment Facilities and People:



Unalaska Awards No-Bid Contract for New Wastewater Plant

Palmer Struggles to Attain Lower Ammonia Levels



Clarkdale Gets Update on Wastewater Plant

Prescott Mulls Consolidating Two Wastewater Treatment Facilities

Prescott Considers Future Wastewater Needs



Long Beach Requesting Bids for Lift Station

PERC Water to Operate and Upgrade Adelanto WWTP

East Quincy Needs New WWTP

Sacramento Water/Wastewater Systems Need Improvements

Azusa Seeks Remedy for Sludge Problem at Wastewater Plant

Lincoln Could Become the Region’s Wastewater Solution

Auburn Evaluating WWTP System

Gilroy Needs $5 Million for WWTP Equipment Replacement

Barstow Takes over WWTP

Santa Clarita OKs $3.74 Million for New Wastewater Equipment



Longmont to Conduct Dye Test on WWTP and St. Vrain Creek



Bristol Requesting Bids for Engineering Services



Madison Requesting Bids for Water/Wastewater Improvement Project

Martin County Making Progress toward Regional Wastewater Network



Decatur Requesting Bids for Wastewater Expansion Project



Twin Falls Requesting Bids for Primary Clarifier Retrofit



Benton Planning New Wastewater Treatment Plant

Ottawa Planning Water/Wastewater Improvement Projects

Marengo Seeking Bids for $12 Million Wastewater Project

$357,000 Renovations for Quincy Part of $1.5 Million Wastewater Project

Pekin Opens Bids for WWTP Project

Spring Valley Anticipates Wastewater Treatment Plant Improvements



Chesterton Plans for Future of Wastewater Plant



Waterloo Open to Taking Other Towns’ Sewage

$40 Million for Iowa City Wastewater Project

Davenport Orders $1.1 Million Sewer Study



Olla Requesting Bids for Wastewater Upgrade

Baton Rouge Requesting more Time to Complete WWTP Upgrades

Bossier Utility District Planning $45 Million Wastewater Project



Bel Air Requesting Bids for Pump Sewer Project

Multiple Wastewater Projects for Maryland



Rockport Requesting Bids for WWTP Project

Mansfield Takes First Step on Norton WWTP Expansion

Marion to Decide on $27.34 Million Water/Wastewater Project

Fitchburg Requesting Bids for WWTP Upgrade



Ann Arbor Approves $93 Million Contract with Walsh Construction

Kalamazoo Raises Rates for Water/Wastewater Projects



St. James will Complete Wastewater Upgrades

Spring Grove Requesting Bids for Wastewater Project

Sturgis to Begin Wastewater Study



$72 Million for Liberty Wastewater Plant

Little Blue Valley Requesting Bids for Wastewater Project



Gallatin County Working on Wastewater System Evaluation

Kalispell Looks to Delay Strict Water Pollution Standards



Bids to Start at $10 Million for South Sioux City WWTP

Grand Island Considers Wastewater Treatment Plant Options



New market Opts to Kill Wastewater Upgrade Plan



High Bids Delay Upgrades for Raritan Township Wastewater Project

Elizabeth Requesting Bids for WWTP Digester



Caneadea Plans Wastewater Plant Upgrade

Auburn Planning $2.6 Million Wastewater Project

$2.6 Million for Auburn WWTP Upgrades

New Baltimore to Begin Early Work on Wastewater Plant

Oswego Requesting Bids for Wastewater Project



Brunswick County Requesting Bids for Wastewater Project

Norlina, Warrenton and Warren County Plan WWTP Improvements



Williston Accepts Bid for WWTP Project



Leipsic WWTP Grant Going Forward

Columbus Wastewater Rehab Cost could increase $282,250

Communities Consider Regionalization of Wastewater Plant

Bids Opened for Bascom Wastewater Treatment Plant

Attica Moves Forward on Wastewater Project

Lorain County Wants to form Sewer District



$10 Million for Myrtle Point Wastewater Plant Project

Monmouth Requesting Bids for Wastewater Improvement Project



Benezette Township Requesting Bids for Wastewater Project

Marietta Plans Phase III Wastewater Project

West Branch Regional Authority Plans New WWTP

Lock Haven Approves Bids for New Wastewater System

Greencastle Move Forward with WWTP Project

Harrisburg Authority Cuts Wastewater Treatment Plant Improvement Costs in Half

Gov. Corbett Announces $98 Million Investment in Water Infrastructure Projects

Upper Gwynedd-Towamencin wastewater treatment plant may need expansion



Orangeburg Sewer Project Bid $2 Million more than Expected



Ethan Plans WWTP Upgrade



$530 Million for Knoxville Wastewater Project

Mosheim to Seek Grants for Wastewater Upgrade


Houston Requesting Bids for WWTP Project



Springville City Requesting Bids for Wastewater Improvement Project



Richmond Requesting Bids for Engineering Services

Ashburn Requesting Bids for Engineering Design at Water Plant



Skagit County Requesting Bids for WWTP Project

Problems with Winlock $12 Million WWTP



Kruger Wins AnoxKaldnes MBBR Contract In Marbleton, WY



Approvals Expected in Spring for McLoughlin Point WWTP Project

Kasabonika WWTP at Capacity

James Wastewater Plant to Cost $18.9 Million

Owen Sound to Spend $15 Million for New WWTP

Delhi Planning New WWTP

Calgary Requesting Bids for Water/Wastewater Projects

Toronto Requesting Bids for Engineering Services

Berwick’s WWTP to Receive $2 Million Upgrade

Squamish Needs Major Wastewater Treatment Plant Improvements

$18.9 Million for Abbotsford's WWTP Upgrades

Sechelt District Has $12.8 Million for Wastewater Project



Calgon Carbon Receives Conditional Acceptance for C(3)500 UV Disinfection System

In-Pipe Technology Awarded Contract for Green Sewer Collection System in Mt. Airy, MD

Biowater Technology Announces Energy Efficient Biological Wastewater Treatment Systems

HyperSolar Technology Turns Wastewater into Renewable Hydrogen and Natural Gas



North American Municipal Wastewater Treatment Facilities and People includes biweekly updates on all the projects. For more information, click on:


Town of Trumbull Pump Optimization Project Yields $60,000 Net Present Value

Content Body

The Town of Trumbull in Connecticut was looking for a way to increase the operating performance of one of its ten sewage pumping stations. Built in 1971, the station consisted of twin sewage handling pumps (40-hp direct drive, wound rotor motor) vertically mounted below ground, handling 340,000 gallons of raw sewage per day. The system used one pump to handle the entire peak flow under normal operation, and used the second pump in only extreme conditions. Each pump rarely operated more than five minutes at a time. The system experienced frequent breakdowns, occasional flooding, and sewage spills.

An investigation in the total system performance resulted in a  decision  to add a smaller, 10-hp Xylem Flygt pump with direct online motor starters and a level control system with float switches. The new pump handles the same volume as the original pumps during non-peak periods, but runs for longer periods of time. The old pumps handle infrequent peak flows. The two compressors for the bubbler level control system and the two circulating pumps for the old motor control system were also eliminated and lighting efficiencies were implemented. This decision produced the following results:

Reduced energy consumption by almost 44 percent due to: 

·         Lower outflow rate reduced losses in the piping system

·         Lighting system upgrades

·         Elimination of the bubbler level control and cooling water pumps

Reduced cleaning and maintenance requirements (supplies and labor) and associated downtime:

·         Eliminated the need to replace two mechanical seals per year

·         New, submersible pump is much easier to swap out if repair/replacement is needed

Extended equipment’s expected life due to longer operating times and reduced power input.

Increased system capacity 25 percent, potentially deferring need for additional pump stations.

Decreased noise from new pump, improving relations with local residents.

These modifications can be easily replicated at other sites (new sites or retrofit). A new pump site under construction in Trumbull is using the submersible pump technology and saving an additional $10,000-$12,000 by eliminating the need to dig a second hole.


Value Added:                        Equipment cost, fully installed:          $12,000
Annual Savings:                    Energy savings                                    $2,600 31,900 kWh/yr
Maintenance Savings:           Supplies                                               $1,800 2 seals/yr ($900 each)
                                                Labor                                                   $1,800
Total                                                                                                   $6,200


Parma West Plant Replaces Mechanical Aeration System and Reduces Energy Consumption by 40 Percent

To curb rapidly increasing energy costs, the owners of the Italian treatment plant Parma West installed a modern aeration system based on Sanitaire membrane discs from Xylem. In 2006 the old mechanical aeration system was successively replaced without disturbing ongoing operations. The result: More efficient aeration and 40 percent lower energy consumption at the entire plant.  

The Parma West plant manages the wastewater from some 80,000 households and 40,000 P.E. (People Equivalent) industrial customers in and around the Italian city of Parma, Emilia-Romagna, but actually upgraded to treat 170,000 P.E. Operated by the multi-utility company Enia, the wastewater treatment plant has three ring-shaped and one rectangular basin, originally designed for and equipped with mechanical aeration systems. The old, mechanical aeration system consumed around 10.5 million kWh per year. As energy prices soared, the cost of the low efficiency system became increasingly obvious. Furthermore, the increased temperatures resulted in some bulking problems, particularly during the spring periods and at daily peak loads.”

Sanitaire fine bubble aeration systems were installed in all four basins. Under normal conditions these systems are known to enable yields of up to five kilos of oxygen per kWh, which is more than twice the performance of the best mechanical systems. Mounted on thoroughly calculated grids, each Sanitaire unit comprises a membrane diffuser made of micro-punched EPDM. These membranes distribute the air into the liquid in the form of fine bubbles, which increases the contact area between air and water and maximizes the transfer of oxygen to the wastewater.

The choice of materials for the diffuser membrane is essential to maintain its elastic properties over time in the most challenging environments. To this end, Xylem has invested in continuous product development resulting in a new generation of durable diffusers with sustainable performance, reduced maintenance needs and longer life. In this project nearly 2,500 such “fine bubble” disc diffusers were placed in each tank. In the three ring-shaped plug-flow tanks the diffusers were organized in nine grids, in groups of three with different diffuser densities.


Municipal Wastewater Plants Will Spend $1.1 Billion This Year for Centrifuges and Clarifiers

Thanks to the infrastructure expansion in Asia suppliers of centrifuges, clarifiers and dissolved air flotation systems will enjoy a $1.1 billion world market. This is the latest forecast in Sedimentation/Centrifugation World Markets, an online publication of the McIlvaine Company. (


World Municipal Wastewater Sedimentation and Centrifugation Revenues ($ Millions)

Africa                                                  74

CIS                                                        2

East Asia                                           519

Eastern Europe                                    86

Middle East                                        57

NAFTA                                             227

South & Central America                   29

West Asia                                            75

Western Europe                                104

Total                                               1,173


Asia will account for more than 50 percent of the market. There are two popular choices for sludge dewatering. One is the decanter type centrifuge. The other is the belt filter press. Centrifuges are sophisticated devices and, therefore, typically supplied by international companies. There are a number of local belt filter press suppliers in Europe.

Dissolved Air Flotation (DAF) is efficient at removing particles. It can be used for primary and tertiary treatment. Sludge collectors are widely used in treatment plants around the world. There are mechanical designs which push the sludge up an incline. There are also suction types with a traveling suction pipe.

China is a special case. There is a very large need for wastewater treatment plants as the migration from farms to cities continues. At the same time, there are water shortages. The rainfall per capita in China is less than half that in the U.S.  As a result, there is great interest in reclaiming municipal wastewater. This adds to the market and DAF, centrifuges and clarifiers are often used in reclamation systems.

For more information on Sedimentation/Centrifugation World Markets, click on:                                                                                            


Municipal Wastewater Insights is available free of charge along with a number of other publications. You can register to receive them at:


Bob McIlvaine
847 784 0012 ext 112


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191 Waukegan Road Suite 208 | Northfield | IL 60093

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