Pure Water the Way It Was Meant to Be

As the public becomes more health conscious and educated about water contamination, demand for bottled water continues to increase. In order to provide purified water, it is important to understand the reverse osmosis (RO) water purification process.

Deck: 

Pretreatment is the first step in a reverse osmosis system for high quality water.

About The Author: 

Michael Pennington serves as a filtration marketing manager for Severn Trent Services, Inc., a supplier of water and wastewater treatment solutions. The Filtration division of the Water Purification Solutions Group consists of UAT membrane systems and bottling equipment lines, adsorption, evaporation, municipal treatment technologies and other unit operations. Additional information is available at www.severntrentservices.com or www.universalaqua.com.

Activation Date: 
November 9, 2001
Files: 
Issue Reference: 
Legacy
Legacy ID: 
12757

Judicial Equities Override Filtration Requirement

A recent federal court decision may have created an opportunity for relief from United States Environmental Protection Agency (EPA) rules that impose costs that substantially exceed benefits.

Deck: 

October 2001 Legal Stream

About The Author: 

Dan Kucera is a partner in the law firm of Chapman and Cutler, 111 W. Monroe St., Chicago, Illinois 60603–4080, (312) 845–3000.

Activation Date: 
October 19, 2001
Legacy
Legacy ID: 
12704

Q&A: Polymeric Membrane Filtration

The following interview is with Robert Huehmer, who currently is process manager with USFilter?s (a Vivendi Water company) Memcor, Microfloc and General Filter products division, located in Timonium, Md.

Deck: 

The when, where and how treatment is applied.

About The Author: 

Wendi Hope King is editor of Water Quality Products magazine

Activation Date: 
October 12, 2001
Legacy
Legacy ID: 
12696

Belt Filter Presses: Still a Cost-Effective Solution - Myth or Reality?

When faced with upgrading or searching for alternative methods, the staff of one facility had to determine if their belt filter presses were still a cost-effective solution for their solids dewatering process.

Deck: 

Solids Handling

About The Author: 

Glenn Curtis is the chief pollution control operator of the Monroe County Department of Environmental Service, N.Y. He has more than 28 years of experience.

Activation Date: 
September 21, 2001
Legacy
Legacy ID: 
12651

Editorial Emphasis: Wastewater Treatment

 

 

 

 

 

Deck: 

Exfiltration system uses distribution chambers to protect sensitive Lake Erie

About The Author: 

For more information, contact Infiltrator Systems Inc. at 800.221.4436.

Publication Date: 
September 20, 2001
Activation Date: 
September 20, 2001
Legacy
Legacy ID: 
12642

Controlling Mechanisms of Contaminant Ion Leakage in Condensate Polishing Systems

Extracting the maximum benefit from condensate polishing systems continues to be a top priority among many electric utility plants. With cost reduction pressures and increasing water quality standards, owners and operators continue to evaluate the resin handling procedures that affect corrosion product transport and contaminant ion impurity levels.

About The Author: 

Stephen W. Najmy is a project manager for The Dow Chemical Co. He has worked in the technical service and development department for Dow Liquid Separations for the past 10 years. Much of his job focuses on the development of new resin products and procedures for condensate polishing systems. He is based at Larkin Laboratory in Midland, Mich.

Activation Date: 
September 11, 2001
Files: 
Issue Reference: 
Legacy
Legacy ID: 
12618

Evaluation of the Use of Crushed Recycled Glass as a Filter Medium: Part 2

Performance studies show that crushed recycled glass can provide capital and annual cost savings over traditional sand filter media.

Deck: 

Filtration

About The Author: 

Richard W. Elliott, P.E., is a civil engineer located in Cazenovia, N.Y.

Activation Date: 
August 22, 2001
Legacy
Legacy ID: 
12546

How to Remove Emulsified Oil from Wastewater with Organoclays

This article defines what organoclays are and details how they are being used to remove oil and grease from wastewater.

Deck: 

Industrial Treatment

About The Author: 

George R. Alther is the president of Biomin, Inc., Ferndale, Mich.

Activation Date: 
August 9, 2001
Legacy
Legacy ID: 
12529

Evaluation of the Use of Crushed Recycled Glass as a Filter Medium: Part 1

When compared with traditional sand filter media, crushed recycled glass can provide significant capital and annual cost savings.

Deck: 

Filtration

About The Author: 

Richard W. Elliott, P.E., is a civil engineer located in Cazenovia, N.Y.

Activation Date: 
August 10, 2001
Legacy
Legacy ID: 
12526

Plant Fine Tunes Filtration Performance with On-Line W

Because particle counting is a more sensitive measurement than turbidity measurement, liquid-borne particle counting is playing an increasing role in potable water treatment. At San Francisco’s Harry Tracy Filter Plant, operators are using a water particle counter to fine-tune filter operations. Based on the successful performance of its online unit, plant management is planning to fine-tune filter runtimes even further by installing additional particle counters to monitor raw water influent as well as individual filter and combined filter effluent particle counts.

About The Author: 

Joe Guerra is senior operator, Harry W. Tracy Treatment Plant, San Francisco Water Department.

Activation Date: 
June 19, 2001
Legacy
Legacy ID: 
12439