ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05871.x

出版商:Wiley    

年代:1992

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05872.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

ESG Watts Inc. filed an application with the Illinois state Environmental Protection Agency (EPA) to construct a facility to store and treat water‐based or aqueous hazardous wastes. The treated water was to be discharged into a city's storm sewer system and from there into the Mississippi River. Subsequently, Watts advised that it changed its planned method of disposal by routing through a private pipeline into the river. This method required an easement from the city. In December 1988, the city indicated it would deny the easement. By February 1990, the state EPA still had not received information on the final disposition of the wastewater generated by the treatment facility. The city formally denied the easement request in March 1990. In June 1990, the state EPA denied Watts' request for the permit. Watts appealed to the Pollution Control Board, which affirmed the denial.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05875.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Departing from tradition, USEPA's Office of Ground Water and Drinking Water (OGWDW) is considering and intends to proceed with developing a proposed disinfection‐disinfection byproduct (D‐DBP) rule using negotiated rule‐making, also known as “regulatory negotiation” or “reg neg.” This would be the first time a drinking water regulation would be drafted using the reg‐neg process since USEPA's reg‐neg process began in 1983. USEPA has been working diligently for many years on the technical aspects of the D‐DBP rule. The rule will limit concentrations of disinfectants and their byproducts in drinking water. These limits conflict with other rules that ensure minimum levels of disinfection to prevent waterborne disease. Limits set under the D‐DBP rule must ensure that water systems can effectively control both the level of DBPs and microbials. USEPA views a negotiated rule as being beneficial in helping people understand the complexities of the risk‐risk trade‐off issues and in reaching a consensus on a sensible regulation for the short‐term until results of additional research are available. A notice of intent to form an advisory committee for the D‐DBP rule was published. Key issues identified by USEPA to be addressed during the negotiations are listed, and a tentative list of the parties who have initially been selected to participate on the advisory committee is given.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05877.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Notebook computers connected to instruments with an RS‐232 serial port are ideal data loggers and display devices that greatly simplify the recording and analysis of data from tracer studies.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05890.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

This Roundtable discussion took place June 20, 1992, in Vancouver, B.C. Pane1 moderator was Jack Hoffbuhr, deputy director of AWWA, 6666 West Quincy Ave., Denver, CO 80235. Other participants were B. David Clark, director of the Drinking Water Division, Washington Department of Health, P.O. Box 47822, Olympia, WA 98504‐7822; Steve Schmidt, vice‐president of American Commonwealth Management Services Co., P.O. Box 460, Hershey, PA 17033, and chairman of the Guidance Committee to Small Water Systems for AWWA; John Stubbart, president of Waimea Water Services Inc. and chairman of the Hawaii Section's Small Water System Committee, P.O. Box 326, Kamuela, HI 96743; and Rocky Wiley, manager of general planning, Denver Water Department, 1600 West 12th Ave., Denver, CO 80254, and director of the Rocky Mountain Section.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05878.x

出版商:Wiley    

年代:1992

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05879.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

What is the current state of strategic planning in the water utility industry? What types of organizations are most involved in the use of formal strategic planning systems? How is the planning process conducted? How have organizations used the planning process to improve operations? These were the central issues of a strategic planning survey recently conducted among the largest organizations in the water industry to determine how strategic planning has evolved to become an integral part of the management process. This evolution is measured by how long the organization has been planning, how many people are involved in the planning process, how well the strategic plan is communicated to the rest of the organization, and how well strategic planning is linked to other management systems such as budgeting and compensation.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05880.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Belt filter presses were placed into operation at the Robert A. Skinner Filtration Plant in 1985 as part of a renovation of the plant's sludge‐handling processes. Through a series of tests, operational parameters such as solids feed, sludge flow rate, polymer dosage, and belt speed and tension were identified as being critical to belt filter press efficiency and optimization. Although sludge production and cake solids have not met specifications, operation of the belt filter presses at this plant are considered successful.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05881.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

There is increasing interest in using ozone in water treatment because it is a strong disinfectant and is able to oxidize the precursors of some disinfection by‐products (DBPs). However, ozonation itself produces DBPs, like aldehydes and ketones, and increases the concentration of bacterial nutrients by converting nonbiodegradable organic matter to more biodegradable compounds. In this study it was found that biotreatment of ozonated waters provided additional removal of precursors of total trihalomethanes, total haloacetic acids, chloropicrin, and total organic halides. Aldehydes are easily biodegradable. Piloting is recommended to determine site‐specific ozone dosages and trade‐offs in the formation of bromate and ozone DBPs and in the oxidation of chlorine DBP precursors.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb05882.x

出版商:Wiley    

年代:1992

数据来源: WILEY