Record Display for the EPA National Library Catalog


Main Title Instrumentation and automation experiences in wastewater-treatment facilities /
Author Molvar, Allen E. ; Roesler, Joseph F. ; Wise, Robert H. ; Babcock., Russell H.
Other Authors
Author Title of a Work
Molvar, Allen E.
Roesler, Joseph F.
CORP Author Raytheon Co., Portsmouth, R.I. ;Maguire (Charles A.) and Associates, Inc., Waltham, Mass.;Municipal Environmental Research Lab., Cincinnati, Ohio. Wastewater Research Div.
Publisher Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1976
Report Number 68-03-0144; EPA-600/2-78-198; EPA-68-03-0144; EPA-ROAP-21ASC-2; EPA/600/2-76/198
Stock Number PB-262232
OCLC Number 37387078
Subjects Water treatment plants--Automation ; Water--Purification--Instruments
Additional Subjects Sewage treatment ; Surveys ; Process control ; Measuring instruments ; Physical properties ; Process charting ; Performance evaluation ; Design criteria ; Automation ; Waste water ; Detectors ; Mechanical properties ; Monitoring ; Transducers ; Tables(Data) ; Questionnaires ; Water analysis
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-2-76-198 c.1 Headquarters Library/Washington,DC 02/25/2014
ELBD ARCHIVE EPA 600-2-76-198 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-2-76-198 repository copy AWBERC Library/Cincinnati,OH 03/05/2019
ESAD  EPA 600-2-76-198 Region 10 Library/Seattle,WA 10/10/2018
NTIS  PB-262 232 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vii, 371 pages : illustrations ; 28 cm.
This report describes the results of a nationwide survey of instrumentation and automation experiences in fifty wastewater-treatment plants. The data show that the average wastewater-treatment plant spent about 3% of the construction costs for installed instruments. This is about half the instrument utilization rates of water supply and chemical process plants. Sensors measuring mechanical or physical properties showed satisfactory performance records and were very popular. Sensors measuring chemical parameters tended to be unreliable and were subject to continued fouling from solids deposition, slime buildup and precipitation. Automatic process control is only occasionally utilized in wastewater treatment, but it performs well with sensors that have good performance records. Approximately 20% of the visited facilities were used for data-logging computers, and 90% of these facilities were satisfied with their systems. Process and supervisory control computers are not well established in dry weather treatment plants, but computers are being effectively utilized in stormwater control centers.
EPA contract no. 68-03-0144. Project officer: Joseph F. Roesler. "October 1976." "EPA-600/2-76-198." Includes bibliographical references.