Prepared in cooperation with the Ohio Department of Transportation and the U.S. Department of Transportation, Federal Highway Administration By: Sharp Technologies, Inc. December 1999 982 Crupper Avenue Columbus, Ohio 43229 614-841-4650 I 1. R.port No. 2. Gorsmmnt AcC.uion No. 3. R.clpient's Catalog No. 3 1980 00016 1477 FHWNOH-99/016 4. Tltle and Subtitle I Report Date OHIO DEPARTMENT OF TRANSPORTATION WASTEWATER lgg9 TREATMENT PLANT TELEMETRY MONITORING PILOT PROJECT 6. performing Organiration code 8. Worming OrganhUon Repon No. r. Author(s) Raymond Bloch Eric Klintworth, PE 10. Work Unit No. (W) 1. Performing Oqanization Name and Addmu 11. Contract or Grant No. Sharp Technologies, Inc. (State Job No. 14657(0) 382 Crupper Avenue 2olurnbus, OH 43229 13. Type d Repod and Period Covered -Final Report 12 Sponsoring Agency Name and Address 3hio Department of Transportation 14. Sponsoring Agency Code 1600 West Broad Street Zolumbus, OH 43223 With the increased scrutiny placed on operators of road side rest stops to maintain system operation within environmental regulatory requirements and maintain low cost operations, the Ohio Department of Transportation in conjunction with the US.Department of Transportation, Federal Highway Administration, commissioned the implementation of a wastewater treatment plant telemetry monitoring pilot project. This project incorporated the implementation of a state-of-the-art SCADA (supervisory control and data acquisition) system providing ODOT operators and management the ability to remotely monitor and control operations of the Rt. 32 Rest Stop Wastewater Treatment plant. This rest stop is located in Pike County approximately 100 miles south of Columbus, Ohio. The system was retrofitted with new analog and discrete instrumentation tied to a local programmable controller. The programmable controller was designed with the ability for remote operation by ODOT supervisory personnel to access information via phone modem. The control scheme at the wastewater treatment plant was enhanced and modified to minimize ammonia discharge fiom the facility. This was accomplished by using the existing package treatment system and through software logic in the programmable controller modify the operation from a strictly timed operation into a sequencing batch reactor. '. Key Wods ia Oistrlbutlon Statement SCADA, SuperVis~ryControl and Data Acquisition, No Restrictions. This document is Telemetry, Remote Monitoring, Sequencing Batch Reactor, Ammonia Control, Instrumentation, Remote Operatiom, available to the public through the Package Wastewater Treatment Plant National Technical Information Service, Springfield, Virginia 22161 s.Surlty Ctassif. (of thla repon) w.(Of w8 m) 21. No. of Pag.. 22 Rice nclassified Unclassified Fo~DOT F 1700.7 (8-72) -dcompl.t.dP.0.- ,. .. OHIO DEPARTMENT OF TRANSPORTATION WASTEWATER TREATMENT PLANT TELEMETRY MONITORING PILOT PROJECT EXECUTIVE SUMMARY One of the most appreciated amenities provided by the state for use by the motoring public are the little "comfort stops'' along the highway. As the interstate highway systems became a reality the need for rest areas on these super highways became apparent. Today there are 146 roadside rest areas throughout Ohio. A total of forty-eight are located on interstates with the remainder on primary and secondary highways. The Ohio Department of Transportation (ODOT) is responsible for the operation and maintenance of a network of watedwastewater treatment systems at rest areas throughout the State of Ohio. Presently, ODOT personnel must visit these sites on a daily basis due to permit requirements for maintaining system operation, process modifications, process information retrieval, and compliance to Ohio EPA regulatory requirements. With the geographic arrangement of the variousroad side rests, site visits have become expensive for ODOT in terms of personnel, scheduling, and routine maintenance activities. Environmental considerations including increased regulatory requirements by the Ohio EPA require a system solution that provides ODOT the ability to more closely control effluent discharge without large capital or manpower costs. Present operations staff procedure requires that an individual visit the rest stop a minimum of four times per week. This is due to regulatory requirements associated with permit compliance. Contingent upon discussion and approval from the Ohio EPA our goal is have the daily site visits relaxed based upon implementation of a remote access, supervisory control system. This reduction of scheduled visits will allow ODOT increased flexibility with its manpower. Operators of roadside rest stops are under increased scrutiny to maintain system operation within environmental regulatory requirements while maintaining low cost operations. The Ohio Department of Transportation in conjunction with the U. S. Department of Transportation, Federal Highway Administration, commissioned the implementation of a wastewater treatment plant telemetry monitoring pilot project. This project incorporated the implementation of a state-of-the-art supervisory control and data acquisition (SCADA) system providing ODOT operators and management the ability to remotely monitor and control operations of the Rt. 32 Rest Stop Wastewater Treatment Plant. This rest stop is located in Pike County approximately 100 miles south of Columbus, Ohio. The system was retrofitted with new analog and discrete instrumentation tied to a local programmable controller. The programmable controller was designed with capability for ODOT personnel to access information and to operate the system remotely via phone modem. The control scheme at the wastewater treatment plant was enhanced and modified to minimize ammonia discharge from the facility. This was accomplished by using the existing package treatment system and, through software logic in the programmable controller, modifying the operation of the treatment plant from a strictly timed operation into a sequencing batch reactor. Ammonia control is the primary non-attainment concern in regards to permit requirements. The other areas monitored, carbonaceous biological oxygen demand (CBOD), dissolved oxygen (DO), and pH, were tracked during this study period. Data results show that the system has met the goals for maintaining system performance. Sharp Technologies, Inc., 982 Crupper Ave., Columbus OH 43229, (614) 841-4650 ____ ---~______- --- I TABLE OF CONTENTS OHIO DEPARTMENT OF TRANSPORTATION WASTEWATER TREATMENT PLANT TELEMETRY MONITORING PILOT PROJECT I I i 1.0 Executive Summary 2.0 System Overview 3.0 System Implementation I Appendix A - System User’s Guide I Appendix B - Manufacturer’s Literature THE CONTENTS OF THIS REPORT REFLECT THE VIEWS OFTHE AUTHORS WHO ARE RESPONSIBLE FOR THE FACTS AND THE ACCURACY OF THE DATA PRESENTED HEREIN. THE CONTENTS DO NOT NECESSARILY REFLECT THE OFFICIAL VIEWS OR POLICIES OF THE OHIO DEPARTMENT OF TRANSPORTATION OR THE FEDERAL HIGHWAY ADMINISTRATION. THIS REPORT DOES NOT CONSTITUTE A STANDARD, SPECIFICATION, OR REGULATION. SECTION 1 EXECUTIVE SUMMARY One of the most appreciated amenities provided by the state for use by the motoring public are the little "comfort stops" along the highway. Safety rest areas are not new to the American motorist. In the 1920s and 1930s, they were first seen as wayside rests and served as little more than pull-off spots along two- lane highways where travelers could stop and rest or perhaps, at best, have a picnic. Ohio was an early pioneer in roadside development. During the 1930s, a severe drought hit Ohio. Farmers were having a difficult time keeping their cattle alive. The Department of Transportation took it upon itself to drill wells along the highways to aid the farmers. Scioto 52 is believed to be where the first wells were drilled. As more wells were drilled, shelters and benches were added. Not only did farmers take advantage of I these water sources, but the traveling public also began to use the water. The first roadside rest areas developed out of these well locations. In 1935, the first road-side rest was dedicated and in the next few years the number was rapidly expanded. These road- side rests were built on state lands. A lack of finding prompted the department to ask the public to donate land to develop additional roadside rests. Donors were honored with a plaque at each location. Today many of these rest areas are named for the original landowner. By 1940 there were 277 roadside rests available to motorists. While the park system was evolving, interstate highway systems became a reality and the need for rest areas on these super highways became apparent. The Federal Highway Administration took an active role in rest area development during the mid-1960s. The need for these changes was brought about by a very mobile public demanding roadside facilities for the traveler. Today there are 146 roadside rest areas throughout Ohio. A total of forty-eight are located on interstates with the remainder on primary and secondary highways.' 1.1 RESEARCH OBJECTIVE I The Ohio Department of Transportation (ODOT) is responsible for the operation and maintenance of a network of watedwastewater treatment systems at rest areas throughout the State of Ohio. Presently, ODOT personnel must visit these sites on a daily basis due to permit requirements for maintaining system operation, process modifications, process information retrieval, and compliance to Ohio EPA regulatory requirements. With the geographic arrangement of the various road side rests,