Controlling Micro-Organisms   Water & Wastes Digest December 2004   By Ivars Jaunakais
This article deals with the control of microorganisms by disinfection with chlorine and DPD chlorine testing.

Measuring Chlorine Disinfection   Water & Wastes Digest December 2004   By Frank Kaiser and Bill Fehrman
This disinfectant is used by more than 90% of the drinking water plants in the U.S., and more than 200 million Americans and Canadians receive chlorine-disinfected drinking water every day.

Preserving Pipelines   Operations & Maintenance Supplement November 2002   Richard N. Schantz, P.E.
Well-maintained and functional sewer systems are a major asset in any community, but they require regular cleaning, inspection and maintenance. Chemical grouting too often is viewed as a stopgap measure to reduce groundwater infiltration. In reality, grouting does much more to maintain sewer line integrity. It also is a soil-sealing process that stabilizes the sewer bedding soil, preventing washout of bedding fines and resulting pipe misalignment and joint failure.

Louisiana Meets New Security Requirements with Quick Test to Monitor Chemical Profile at Plants, Water Sources   Water & Wastes Digest October 2002
As part of its Safe Drinking Water Program, the State of Louisiana recently implemented 12 units of the Severn Trent Services Eclox(tm) Rapid Response Water Testing System. Eclox offers municipalities a low cost option for monitoring water quality and meeting new security requirements.

Wet Chemical TOC Analysis   Water & Wastes Digest October 2002   Karnel R. Walker, Dan Davis, and Robert H. Clifford, Ph.D.
The goal of this article is to demonstrate that the Shimadzu TOC-VW can effectively oxidize the Humic Acid (HA) matrix at high accuracy and precision levels never before witnessed by the wet chemical TOC community. The Shimadzu TOC-VW Carbon analyzer is the only TOC on the market that uses three oxidation techniques of UV light, heat, and persulfate in a single analyzer.1

Preserving Pipelines   Water & Wastes Digest October 2002   Richard N. Schantz, P.E.
Chemical grouting too often is viewed as a stopgap measure to reduce groundwater infiltration. In reality, grouting does much more to maintain sewer line integrity. It also is a soil-sealing process that stabilizes the sewer bedding soil, preventing washout of bedding fines and resulting pipe misalignment and joint failure.

Shifts in Analytical Requirements   Water Quality Products September 2002   Troy Ethan, Spectrum Laboratories
To remain successful, the water treatment professional should take advantage of advances in in-field testing as well as advances in laboratory analyses. This article describes the shifts in analytical requirements recommended to satisfy consumer desires and promote expansion of the POU/POE water treatment industry.
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Advanced Technology Brings the Power to Chlorine Dioxide   Water Quality Products May 2002   Michael Cochran, Engelhard Corp
Chlorine dioxide is an extremely effective and powerful biocide that has been used for many years as a bleaching agent and slimicide in the pulp and paper industry, as a disinfectant in municipal water treatment and in many other industrial water treatment operations. However, significant capital and operating costs have limited the use of chlorine dioxide to large-scale applications. New technology now makes it practical to use the biocide in a wider range of water treatment applications.
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Back to the Basics, Part 1   Water Quality Products May 2002   Jeff Roseman, CWS-1, Aqua Ion Plus+ Technologies
Basic water chemistry, terminology and applications can be very complicated and not seem so basic to individuals without a chemistry background. This series of articles will help shed light on the chemistry of water and the mysteries that it can contain, plus explain the technologies used to treat water so the purchaser can make an educated attempt to find the right solution for a particular application. There are no cut-and-dry formulas for water treatment and certainly no cure-all for every application or problem, but with an understanding of how water works and the technologies developed to treat water, a person can utilize his resources to come up with solutions for his particular need or application.
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Practical Engineering Combined with Sound Operations Optimizes Phosphorus Removal   Water Engineering & Management April 2002   Daniel Bolduc and James Fitch, P.E.
Built in the early 1970s, The Oakland, Maine, Wastewater Treatment Facility (WWTF) treats and discharges approximately 300,000 gallons per day (gpd) of wastewater to the Messalonskee Stream. The facility was designed as a conventional activated sludge secondary treatment system to be used principally for BOD and TSS removals. The secondary effluent enters the Messalonskee Stream upstream of several impoundments. This practice has resulted in a steady decline in the water quality of the stream as evidenced by increased algae blooms and other signs of euthophication in impoundments located downstream of the discharge.
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Chlorine Taste in the Customer’s Drinking Water?   Water Quality Products March 2002   By Ron Grage, Chlorinators Incorporated
Chlorine produces bacteria-free water and eliminates algae and slime. It also removes hydrogen sulfide from ground water (wells and springs) and eliminates iron bacteria (cenothrix), which are associated with objectionable odor and taste. Despite these important facts, some people still object to chlorine in their drinking water. Comments such as “I don’t like the way chlorine makes my water taste” are common.

Consider the Source   Water Engineering & Management February 2002   Bill Swichtenberg
A report released by the Environmental Working Group (EWG) and U.S. Public Interest Research Group (U.S. PIRG) has taken aim at chlorination byproducts (CBPs) in tap water. The group‘s assessment states that more than 100,000 women are at elevated risk of miscarriage or birth defects because of CBPs in tap water.
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New Mixed Oxidant Controls Belt Press Odors   Water & Wastes Digest February 2002
A Midwest municipality needed to find a way to eliminate hydrogen sulfide from the atmosphere in the sludge dewatering area as well as on the plant grounds. The successful elimination of noxious and toxic gas would not only make a safer, healthier environment for the workers involved but would also result in a reduction in the corrosion of metallic components in the dewatering area, while greatly reducing odor complaints from neighbors.

Chlorine Residual Boosting in Distribution Water   Water Engineering & Management January 2002   Shin-ichi Tokuno
When it comes to the methods to increase, or boost, the low level of disinfectant in distribution water, information is scarce
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Primary Coagulant Aid Outperforms Alum, Slashes Operating Costs   Water Engineering & Management October 2001
At a water treatment plant in Cleveland a primary coagulant aid slashed the operating costs.
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Primary Coagulant Aid Outperforms Alum, Slashes Operating Costs   Water Engineering & Management October 2001
At a water treatment plant in Cleveland a primary coagulant aid slashed the operating costs.
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Treatment Plant Cuts Hydrogen Sulfide Odor With Sodium Nitrite/Nitrate Blend   Water & Wastes Digest October 2001
The Johnstown, Penn., Wastewater Treatment Plant has found a simple and relatively inexpensive chemical solution to a chronic hydrogen sulfide odor problem.

Controlling Nitrification in a Water Distribution System Using Sodium Chlorite   Water Engineering & Management September 2001   Thomas L. O’Connor, Bart Murphy and Dr. John T. O’Connor, P.E.
Engineers set out to discover whether the direct addition of sodium chlorite to a water stream might be an effective nitrification control process.
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Editorial Emphasis: Instrumentation   Water & Wastes Digest August 2001   Burkert
Connection of Sensors to Valves Is Chemical Plant’s Formula for Total Quality

Storage Tanks Insulated with Urethane Foam Increase Energy Efficiency   Water & Wastes Digest May 2001
A spray-applied coating and insulation system to protect anhydrous ammonia fertilizer tanks from temperature variations has been useful at beverage, fertilizer and chemical facilities worldwide.
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Bioaugmentation Solves Capacity, Efficiency and Compliance Issues   Water Engineering & Management April 2001
Weary of draining their budgets on increasing capacity or purchasing additional equipment and new chemical treatments, wastewater facility managers are turning to bioaugmentation.

Tablet Chlorination System Provides Affordable Alternative to Liquid, Gas   Water & Wastes Digest November 2000

How to Sanitize a Well in 10 Easy Steps   Water Quality Products May 1998
It is important to sanitize a well twice a year whether it is a new well or an existing well