Skip to main content

CONTROL OF WASTEWATER CHLORINATION AND DECHLORINATION: STRATEGY, OPERATION, AND MAINTENANCE

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Chlorination is perhaps the most commonly used process for wastewater effluent disinfection. Usually a chlorine solution is mixed with the effluent and held for a minimum of 20 to 30 minutes before discharge. Depending on the discharge permit, facilities must demonstrate a minimum residual chlorine or a maximum fecal coliform count or both. Most facilities are also required to remove all excess chlorine (dechlorination) before ultimate discharge. Thus, chlorination control is doubly important since there is both a cost for adding chlorine as well as for removing the excess chlorine.

Successful chlorination and dechlorination systems depend on implementing the right control strategy, selecting the correct chlorine analyzer technology, operating the system correctly, and implementing an effective maintenance program. The elements of a successful control strategy will be presented along with several potential mistakes to avoid. The characteristics, advantages, and disadvantages of three different chlorine analyzer technologies will be discussed with recommendations on where to use each. The role of operations and maintenance will be presented with an emphasis on quality control.

A case study of the upgrade of the chlorination control system at the City of Houston's 400 MGD 69th Street treatment plant will be presented. This system included facilities for good mixing, chlorine residual measurement, and automatic control. The cost of chlorination was reduced from 600,000 to 400,000 per year while increasing maintenance costs by less than 5,000 per year. Additional benefits included improved compliance, less effluent variability, less bisulfite usage, and less operator attention.
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: 2000-01-01

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 These proceedings are not peer reviewed.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