Skip to main content

BCDMH Disinfection for CSO

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Abstract:

Effective disinfection of combined sewer overflows (CSOs) has been achieved using BCDMH, a bromine disinfectant. Over the last five years a total of six facilities have been constructed to provide rapid disinfection in metropolitan Tokyo. Results have been favorable prompting further expansion and use of this technique within Japan. BCDMH (1-bromo-3-chloro-5,5-dimethy lhydantoin) when dissolved in water produces hypobromic acid, an active biocide. This bromine compound is commonly used in industrial, spa and pool applications. It is comparable with NaCIO in terms of toxicity and disinfection and there are no halogen related derivatives prompting subsequent dehalogenation. BCDMH is superior to NaClO with regard to 1) reaction time, 2) degradation, 3) volumes required, 4) dosing rate; and 5) handling. The speed of reaction reduces the need for disinfectant contact tanks, a critical factor in land constrained Tokyo. Required retention time is 3 minutes or less compared to 15 minutes for NaClO. Performance data has shown that an injection rate of 2 – 7.5 mg/L (chlorine equivalent) reduces 103 – 106 CFU/mL of [h1]coli-form to less than the Japan standard value of 3,000 CFU/mL.[h2] Based on the testing completed in Japan, CSOs would be effectively disinfected to a 200 [h3]CFU/100 mL using a 6 mg/l (chlorine equivalent). Performance data, technical designs, system integration and operational processes will be presented.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864705783978230

Publication date: January 1, 2005

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites
wef/wefproc/2005/00002005/00000001/art00026
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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