| 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 |
|
| 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 |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| 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. |
| Abstract |
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. |
| Notes |
EPA contract no. 68-03-0144. Project officer: Joseph F. Roesler. "October 1976." "EPA-600/2-76-198." Includes bibliographical references. |
