摘要:

Ozone treatment is being considered, designed, and operated at an increasing number of drinking water utilities across North America. Most of these utilities use ozone primarily for enhanced disinfection and disinfection byproducts control, but appreciate the improvements in aesthetic quality, including taste, odor, and color removal. This paper describes how ozone is generated and discusses safety considerations. The costs of using ozone are compared to the costs associated with other chemicals used in water treatment. Finally, ozone system optimization is discussed with respect to water quality performance ratio, ozone‐dose consumption and energy consumption.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1996.tb00558.x

出版商:Wiley    

年代:1996

数据来源: WILEY

摘要:

This month's question concerns selecting the best site for drilling a new well. The answer states that the two most important considerations in site selection are well yield and water quality. The first step is to study available data at the state and federal geological and water resources agencies. The article lists what to look for as far as water quality issues, aquifer contamination, treatment costs vs. storage costs, seismic and resistivity tests, computer modeling, and sources of contamination.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1996.tb00559.x

出版商:Wiley    

年代:1996

数据来源: WILEY

摘要:

The final Information Collection Rule (ICR) was published in the Federal Register on May 14, 1996. Unlike other drinking water rules, the US Environmental Protection Agency is responsible for implementing the ICR; states are not directly involved, and primacy is not required. This paper summarizes the general requirements of the ICR and discusses USEPA's implementation process which requires utilities to develop approved sampling plans. The paper also list several sources of help for utilities with questions about the ICR.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1996.tb00560.x

出版商:Wiley    

年代:1996

数据来源: WILEY

摘要:

A small Pennsylvania water system has found that creativity and flexibility are keys to meeting customer needs and complying with the Safe Drinking Water Act. The Aspers, Pennsylvania, water system serves 119 customers and treats an average of 40,000 gpd (200,000 L/d). The system was privately owned until 1993, when ownership was transferred to the Possum Valley Municipal Authority (PVMA). The Aspers water system had a problem with naturally corrosive water but did not have the resources to make needed improvements. The PVMA implemented several improvements including the installation of a water booster station and construction of a water treatment building for chlorination and corrosion control. The control building is unique in that it uses electricity generated on‐site to run three chemical metering pumps.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1996.tb00561.x

出版商:Wiley    

年代:1996

数据来源: WILEY