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

Coatings Repair 20-year-old Pump, Save Replacement Costs

When one of four circulating water pumps at the Potomac Electric Power Company (PEPCO) Chalk Point Generating Station began to leak, engineers began to worry.

Activation Date: 
July 25, 2001
Files: 
Legacy
Legacy ID: 
12462

New Water Meter Thrives in Harsh Environment

The Nevada desert: grit, dust, blazing hot sun by day and ground frosts by night. Just the place to stake out a water meter in an open pit and see how long it can last. That is what happened to a new SmartMeter -- with some revealing results.

Activation Date: 
July 25, 2001
Files: 
Legacy
Legacy ID: 
12459

Polyethylene Pipe Chosen for Delicate Northwest Estuary/Aquarium

Two plants separated by Oregon's Yaquina Bay needed to be connected with two separate pipelines: one line to bring raw sewage to the new plant and one line to carry the finished refuse back to the old plant.

Activation Date: 
July 25, 2001
Files: 
Legacy
Legacy ID: 
12458

Flexible Monitoring System Helps Ohio Company Meet Daily EPA Measurement Requirements

An Ohio utility company provides water plant operator services to facilities throughout the state, including several very large travel center operations. Daily monitoring became time consuming and costly, so they sought a more efficient solution by investigating plant monitoring systems.

Activation Date: 
May 21, 2001
Files: 
Legacy
Legacy ID: 
12348

Long-Term Settlement of a Large Water Standpipe

When tank settlement is anticipated, certain precautions must be taken to assure that the tank settles properly.

Deck: 

Water Tanks

About The Author: 

Steven Law, Ph.D., P.E., is a principal engineer and John Kasprzak is a design technician of the Infrastructure Systems Group of the Washington Suburban Sanitary Commission, Laurel, Md.

Activation Date: 
May 21, 2001
Legacy
Legacy ID: 
12392

Duty Calls For Local Awareness

Editorial: May 6—12 is National Drinking Water Week (NDWW). It is our duty and opportunity as water professionals to make this week work for us by incorporating local companies, expertise and even the Water Quality Association (WQA) into NDWW.

Activation Date: 
May 10, 2001
Issue Reference: 
Legacy
Legacy ID: 
12351

Pumping Up Big John

The John Hancock building, located on Chicago’s Magnificent Mile, needed to revamp its entire pumping and reservoir system without shutting off water to the building’s residents.

Activation Date: 
May 9, 2001
Files: 
Issue Reference: 
Legacy
Legacy ID: 
12345

Basic Essentials

The benefits of ultraviolet (UV) light in destroying waterborne diseases are well established. This article (part one in a continuing series) will focus on explaining the basic terminology associated with the technology.

Deck: 

Understanding Ultraviolet Terminology

About The Author: 

Adam Donnellan is vice president of sales for Sunlight Systems. He represents the third generation of his family to be involved with UV water disinfection. He can be reached at adam@sunlightsystems.com

Activation Date: 
May 9, 2001
Legacy
Legacy ID: 
12346

Insertable Electromagnetic Flowmeter Solves Difficult Piping Problem

A difficult piping arrangement that included limited distance between the metering site and pipe fittings posed a dilemma for the engineering staff at a city of Frederick, Maryland, raw water pumping station.

Activation Date: 
April 25, 2001
Files: 
Legacy
Legacy ID: 
12341