Wet Chemical TOC Analysis

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

Deck: 

Humic Acid: A Complex Molecule, A Simple Solution

Activation Date: 
October 8, 2002
Legacy
Legacy ID: 
13374

Louisiana Meets New Security Requirements with Quick Test to Monitor Chemical Profile at Plants, Water Sources

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.

Deck: 

Products In Action

Activation Date: 
October 8, 2002
Legacy
Legacy ID: 
13372

Shifts in Analytical Requirements

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.

Deck: 

In-field testing and analysis become responsibility of dealers

About The Author: 

Troy Ethan is the president of Spectrum Laboratories in Minneapolis.

Publication Date: 
August 27, 2002
Activation Date: 
August 27, 2002
Files: 
Issue Reference: 
Legacy
Legacy ID: 
13317

Back to the Basics, Part 1

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.

Deck: 

Brushing Up on Water Chemistry 101

About The Author: 

Jeff Roseman is a CWS-I with the Water Quality Association. He has a vast knowledge of chemistry and physics from studies in electrical engineering at Purdue University and helped develop a UV light air purifier and ionization controllers for Great Lakes Control Systems, in Leamington, Ontario, Canada.

Activation Date: 
April 25, 2002
Files: 
Issue Reference: 
Legacy
Legacy ID: 
13083

Advanced Technology Brings the Power to Chlorine Dioxide

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.

About The Author: 

Michael Cochran is the business development manager for the Aseptrol technology at Engelhard Corp., a material science and surface chemistry company based in Iselin, N.J.

Activation Date: 
April 25, 2002
Issue Reference: 
Legacy
Legacy ID: 
13070

Practical Engineering Combined with Sound Operations Optimizes Phosphorus Removal

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.

About The Author: 

James Fitch, P.E., is a vice president with Woodard & Curran, Portland, Maine, with special expertise in municipal facilities. Daniel Bolduc is superintendent of the Oakland, Maine, Wastewater Treatment Facility.

Activation Date: 
April 2, 2002
Legacy
Legacy ID: 
13039

Chlorine Taste in the Customer’s Drinking Water?

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.

Deck: 

Chlorine proves highly effective in water treatment

About The Author: 

1) White, George Clifford“Principles of Chlorination,” Handbook of Chlorination, Fifth Edition.

2) Hoober, Scott. Bottled Water: Does It Meet the Test? Ellen Miller Group, July 1995, Kansas Rural Water Association, “Lifeline.”

Activation Date: 
February 26, 2002
Issue Reference: 
Legacy
Legacy ID: 
12977

New Mixed Oxidant Controls Belt Press Odors

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.

Deck: 

Products in Action

Activation Date: 
February 13, 2002
Legacy
Legacy ID: 
12925

Consider the Source

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.

Deck: 

Editorial

Activation Date: 
February 4, 2002
Legacy
Legacy ID: 
12908

Chlorine Residual Boosting in Distribution Water

When it comes to the methods to increase, or boost, the low level of disinfectant in distribution water, information is scarce

Deck: 

Water Disinfection

About The Author: 

Shin-ichi Tokuno is a microbiologist with the Water Utilities Laboratory in the City of Corpus Christi, Texas

Activation Date: 
December 27, 2001
Legacy
Legacy ID: 
12841