Skip to main content

To PLC or not to PLC UV Systems – Alternatives for UV System Control

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Key to UV process control is the ability to deliver the correct dose at the correct time to ensure compliance with the discharge permit limits. Both manual and automatic control strategies are used within the industry. For automatic control, flow, UV intensity, and UV transmittance are used to control the emitted dose.

With flow control, the number of lamps energized increases or decreases with the flow being discharged from the facility. This type of process control does not take into account for decreased output of the lamp as a result of aging or changes in water quality. Flow control is generally used on the low pressure-low intensity systems. Dose pacing based on intensity is generally used on low pressure-high intensity and medium pressure UV systems using either on-line intensity or on-line transmittance. Intensity-based control allows for the dose to be adjusted in response to lamp output and changing water conditions. On-line transmittance allows for adjustments to be made based on lamp output and water quality.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2005-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more