John K. Esler, President
John Esler is the founder and President of CPE Services, Inc & co-founder and President of Clarifiers, Inc.
His experience includes over thirty years in general construction, consulting engineering, and operator training and technical assistance.
John has served as the Design Associate on civil engineering projects, Project Manager on general construction projects, director of NYS-DEC’s certification, training and technical assistance program, and director of O&M on a large international wastewater treatment project. While with NYS-DEC, Mr. Esler was a contributor to the “Ten States Standards”, a peer-reviewer and contributor to the CSU/Sacramento “Operator Training” series, as well as to the EPA manual on “Retrofitting POTW’s”. He was also a member of the Beta team for its computer version.
B. Civil Engineering, Manhattan College
Adjunct Professor, Rensselaer Polytechnic Institute, 1990 – 2000
Professional Engineer: New York, New Hampshire
Associations / Activities
Water Environment Federation, Member
Operation Forum Editorial Advisory Board (former Board member)
Plant Operations Committee (past Chairman)
Industrial Wastes Committee (member)
State Water Environment Associations, Member, ( New Jersey, New York, New England, Florida, Pennsylvania, and Central States.)
Industrial Wastes Committee (New York)
American Society of Engineers, Member
Clarifier Research Technical Committee
Member, Executive Committee
- NYS Manual for Wastewater Treatment Plant Operations,Editor; Principal Contributing Author
- Preliminary Treatment for Wastewater Treatment Facilities (WEF-OM-2), Principal Contributing Author
- Industrial Waste Treatment (CSU/Sacramento),Author, “Flow Measurement” chapter
- “Ten States Standards for Wastewater Treatment Works”,Principal Contributing Author, “Settling” chapter
- TR-16 / New England “Guides for the Design of Wastewater Treatment Works”,Principal Contributing Author, “Activated Sludge” chapter
- Clarifier Design (WEF MOP FD-8),Reviewer
- WEF MOP 8 on Clarifier Design: Principal Contributing author
- Operations of Municipal Wastewater Treatment Plants (WEF MOP 11), Reviewer
- Handbook: “Retrofitting POTW’s” (USEPA / 625 / 6-89 / 020), Peer Reviewer, Beta Team member
- And numerous technical articles.
CPE Services, Inc. was formed in 1989 to provide technical assistance and training to the water and wastewater treatment sector.
Providing technical assistance for industrial and municipal treatment plants, CPE Services has pioneered in the field of analyzing and optimizing clarifier performance. > With experience at over one hundred municipal and industrial facilities and with hundreds of individual clarifiers, its staff has developed special techniques for conducting detailed evaluations of a clarifier’s performance. This same technology has also been used to determine the flow characteristics of lagoons, chlorine contact tanks, and other process reactors.
CPE Services also presents training programs for individual treatment facilities, and has provided water- and wastewater-related seminars and workshops for State and Inter-State agencies as well as for professional organizations, such as the Water Environment Federation.
Our 'Optimizing Clarifier Performance' workshop has been presented to operators and engineers at various WEF Member Associations and Industrial sites across the country as well as in Europe, Latin America, and Asia. The program includes topics and questions such as:
Updated information for activated sludge, trickling filter, and rotating biological contactor facilities will be provided. Following a re-introduction to the basic concepts and criteria, this workshop will deal with many issues confronting today’s operators and engineers such as:
How can I handle more wet weather flow? What effect will my RAS rate have on performance?
Do I need a bigger center well?…a deeper center well?…an energy dissipating inlet?
What is the best weir/launder configuration? How can I improve the hydraulics of my clarifiers?
What’s new and good?…and what’s new and not so good?
Each topic will be accompanied by case history examples to illustrate the different aspects of clarifier operation and performance along with an “open session” where you can bring in your own clarifier concerns and share your ideas on “how to build the better clarifier!”. This workshop will also discuss new changes to the '10 States Standards', the New England TR-16 Standards, and the Texas clarifier design standards
Attendees should have available for discussion the design and current operating data for their clarifiers such as size, depth, scraper speed, flow rates, RAS rates, SVI, etc.