Ponoka, Alberta -- The wastewater treatment facility at the Town of Ponoka consisted of anaerobic primary lagoons followed a facultative cell and three storage cells. The storage cells discharge into the Battle River. As a result of population growth, Ponoka was discharging twice per year, which exceeded Alberta Environmental Protections’ (AEP) requirement of a single discharge.

If the current treatment process were to remain the same, the capacity of the storage cells would have had to be increased, requiring substantial additional land area and high cost civil construction. Alternative treatment methods were reviewed to determine a more cost effective solution.

A high efficiency ADS fine bubble aeration system was implemented. The system provides the oxygen transfer and mixing capability (through grid coverage) in a shallow lagoon system to ensure uniform oxygen dispersion and the resulting maximum treatment efficiency. All air distribution headers are located out of the water to facilitate full access to all diffuser lines. The system was installed without lagoon dewatering or changes in normal lagoon operating procedures.

The aerated facultative lagoon has an area of approximately 8.5 ha with a water depth of 1.5 m. In order to maximize treatment efficiency the lagoon was divided into 3 cells, which operate in series. Concrete rubble was used for low cost berm construction. The total combined design retention time in cells is approximately 28 days. This retention time will result in total CBOD5 concentrations of less than 25 mg/l being discharged into the storage cells. The system design population is 8,500 with a design flow of 4,250 m3/day and a total CBOD5 loading of 700 kg/day.

The total cost of the upgrade was approximately $1,000,000 which was a fraction of the estimated cost for constructing additional storage cells, or mechanical treatment alternatives.

Nelson Environmental provides engineered wastewater management solutions. Chemical free, natural processes are implemented in the appropriate sequence on a site-specific basis. For assistance with your water quality improvement needs, please contact us for further information.

Source:  Nelson Environmental, http://www.nelsonenvironmental.com/

PITTSBURGH, /PRNewswire-FirstCall/ -- Calgon Carbon Corporation announced that it has received a $7.5 million contract from the Water Quality Authority for the City of Monterey Park, California, for the turn-key design and installation of a state-of-the-art drinking water treatment system for the removal of perchlorate. The system will use Calgon Carbon's modular ion exchange technology and will treat up to 5,000 gallons of water per minute.

"We are working with Calgon Carbon to fast-track this project, and the system will be activated on July 15th," said Grace Burgess, executive director of the San Gabriel Basin Water Quality Authority. "This plant will stop the perchlorate plume from progressing. It is an excellent example of how government and private industry can work together, quickly and effectively, to ensure superior water quality for a community in need of additional water in order to meet its summer needs." Monterey Park has a population of 60,000.

"Calgon Carbon leads the industry with the most perchlorate treatment systems in operation," said James G. Fishburne, senior vice president, Calgon Carbon Corporation. "Calgon Carbon treats more than 21 million gallons of water a day, and additional plants for removing perchlorate are scheduled for start-up by the end of the year. These plants will bring Calgon Carbon's overall treatment to more than 50 million gallons of drinking water each day."

Calgon Carbon's modular ion exchange technology takes advantage of the company's knowledge and leadership in the use of ion exchange resins to remove perchlorate from groundwater. Calgon Carbon has an extensive media testing program to ensure that the users of its technology are provided with the most efficient and cost-effective processes to address their perchlorate challenges. The selected media can be implemented in a single-use modular system such as the new operation for Monterey Park, or in a regenerable ISEP system like the ones employed at other drinking water sites.

Calgon Carbon Corporation, headquartered in Pittsburgh, Pennsylvania, is a global leader in services and solutions for making air and water cleaner and safer. The company employs approximately 1,000 people at 14 operating facilities and 11 sales and service centers worldwide.

Source: Calgon Carbon Corporation, http://www.calgoncarbon.com/

Loveland, Colorado, April 2002 — Hach Company’s new 482-page full-line catalog is completely updated, and features many new products including GLI on-lineelectrochemical instrumentation. Also included are the new OptiQuant SVI Sludge Volume Analyzer and the new AutoCAT 9000 Automatic Chlorine Titrator.

The new catalog features easy-to-use 'quick reference guides' throughout the book to make finding your solution that much easier. New process flow diagrams give you the tools to identify parameter and test requirements, and locate the appropriate products for testing, at every step in your process.

Hach Company manufactures and distributes analytical instruments and reagents used to test the quality of water and other aqueous solutions. Our systems are designed to simplify analysis, and include complete, easy-to-follow methods, high-quality prepared reagents, accurate instrumentation and life-time technical support.  Our goal is to offer quality products and competent, friendly support.

Order your copy call Hach at 1-800-227-4224 (1-970-669-3050) or visit their web site at:  http://www.hach.com/

The U.S. Environmental Protection Agency today issued the Toxic Release Inventory (TRI), the annual report on the amount of toxic chemicals released into the environment for facilities reporting in calendar year 2001.

The report shows that toxic chemical releases continue to significantly decline across the United States. Total releases of chemicals nationwide decreased by 15.5 percent, or 1.05 billion pounds, from reporting year 2000 to 2001. Based on trends since the inception of TRI in 1988, chemical releases have decreased approximately 54.5 percent.

"The Toxics Release Inventory is one of the most important activities EPA completes each year. It is a tool that gives the American public information on chemical releases for their communities so that they can make informed decisions about protecting their environment," said Acting EPA Administrator Linda Fisher. "I am especially pleased that this year there are some innovative 'firsts' in the TRI, including a new mapping capability to make it easier to get information. The entire TRI database is on-line, and I encourage citizens to use our TRI Explorer tool, enter their state and county, and see the data for themselves."

Looking at all chemical releases, approximately 27 percent of chemicals were released to air, 4 percent to water, 4 percent to underground injection on- and off-site and 65 percent to land on- and off-site. For all industries, there was a decrease in releases of mercury to air by nearly 7 percent, and to water of 25.6 percent. As in previous years, releases from the metal mining industry in 2001 made up a substantial portion of all chemical releases––45 percent. However, the metal mining industry also had the largest absolute decrease, by 602.5 million pounds, a 20 percent decrease from their releases in 2000.

Releases from chemical manufacturing industries accounted for 9.5 percent of all releases – about 94.7 million pounds, down 14.5 percent from 2000. About 17 percent of the releases were from electric utilities––about 98.3 million pounds––achieving an 8.5 percent decrease from 2000. The report indicates some increases in emissions of particular chemicals, limited to a very small number of facilities, mainly due to changed reporting thresholds or one-time processes. For example, this year's report includes data that reflects a new 100 pound threshold for reporting of lead and lead compounds – previously, facilities only reported for lead if they manufactured or processed over 25,000 pounds or used over 10,000 pounds.

Because of this reporting change, the total lead releases increased by 69 million pounds from 374 million pounds to 443 million pounds. While there was a one year increase in the releases of dioxin reported to TRI, the overall long term trend is that levels of dioxin are decreasing. Three facilities accounted for almost three-quarters of all of dioxin releases in 2001. These increases in dioxin, in part due to one time maintenance at some of these facilities, were 49,714 grams for a total of 148,759 grams.

In filing reporting year 2001 chemical reports, over 10,000 TRI reporting facilities took advantage of EPA's interactive reporting software tool, called "TRI-ME" or "TRI Made Easy," which assists facilities in completing their TRI obligations by simplifying and expediting reporting and improving data quality.

The Toxics Release Inventory was established under the Emergency Planning and Community Right-to-Know Act of 1986, and includes information on releases and other waste management for over 650 toxic chemicals and chemical categories. The data available today is based on reports from manufacturing industries, metal mines, certain coal mining activities, electrical utilities that burn coal and/or oil, hazardous waste treatment and disposal facilities, chemical wholesale distributors, petroleum bulk plants and terminals and solvent recovery services. The TRI data and background information are available to the public at http://www.epa.gov/tri and the TRI explorer mapping tool is available at http://www.epa.gov/triexplorer 

People post their requests for help and offer their suggestions to others in our open forum.

Mr. Dover needs help with his ponds and irrigation water:

I have a 3-pond system: 1st pond is 500,000 gallons,  2nd is 250,000 gallons and the last pond is 1.25 million gallons.  In # 1 the pH is 7.8, # 2 pH is 9.3 sodium is 570 mg/L in #1 in # 2 it is 630 mg/L and the chloride for # 1 is 950 mg/L # 2 is 1000 mg/L with that said my irrigation ( # 3 ) pond is as followed

pH 8.5
chloride 35 mg/l
sodium 34 mg/l

My question is can I safely transfer # 2 pond to # 3 and if not how can I clean the water up so not to hurt crops and fish.
(Click here to post a reply)

Hope you can help,
Harold Dover
harold@firestonewine.com

Mr. Bryant needs to predict H2S levels:

Can H2S concentrations be predicted from general WW information?
(Click here to post a reply)

Rob Bryant
rbryant@m-m.net

Help Forum:  Share your expertise with others in our Help Forum.

Project Manager/Senior Engineer:  Phoenix, AZ

Top 115 A/E design firm in the Phoenix AZ is in need of a Senior level Civil Engineer to lead their Water / Wastewater project design team in their Phoenix office. Looking for someone with 10+ years experience in  Water / Wastewater facility design with excellent technical, managerial, and client relations expertise.

Candidates from the following firms will be given priority as this position needs to be filled ASAP:
Stantec, Stanley Consultants, Carollo Engineers, DeLeuw, Cather & Co.

Compensation range: $60K - $95K (DOQ) plus full relocation and benefit package offered.

For prompt consideration send your MS Word formatted resume to:
Harbor Associates, LLC.
email: resumes@harbor-associates.com
Telephone:  614-818-3318

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Joseph Taylor, Editor
Water and Wastewater Newsletter
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Water and Wastewater Newsletter is a 100% opt-in e-mail list of information for the water and wastewater treatment professional.  Do you have company news, a new product, new service or other information you would like to share with our subscribers?  Please submit articles via e-mail, only to:  news@waterandwastewater.com

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This week's photo is of installation of a Smith & Loveless OXIGEST wastewater treatment system, located in Pinellas County, FL.  Treated effluent is reused for spray irrigation at a nearby golf course. The OXIGEST system contains multiple treatment zones, an inner secondary clarifier and tertiary filter cells which work to provide high-quality effluent.

Submitted by Karen Bowser of Smith & Loveless Inc.

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