If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com


$17.50 plus tax (Refund Policy)

Buy Article:


Within the European Union (EU) increased legislation means that manufacturing companies are being asked to improve upon the quality of effluent discharged to either sewer or controlled water bodies. In order to meet these requirements, onsite treatment is regularly practised. This paper discusses work carried out to optimise the performance of a Dissolved Air Flotation (DAF) treatment plant at a pipe mill in the UK. The laboratory studies showed that the most effective treatment for the mill wastewater was a combined treatment of FL4440 (polydiallyldimethylammonium chloride, PDADMAC, used as a primary coagulant), ferric chlroride or alum (used as a secondary coagulant) with final pH control and Flopam AN934 (a polyacrylamide based flocculant). This treatment was able to breakdown a wide range of emulsions produced from the mill and the results obtained were totally independent of initial pH, COD and oil & grease. However, larger flocs were only seen when pH was increased to 7.08.5. This paper reports the results of a pilot study onsite to evaluate the effectiveness of these chemicals derived from the laboratory studies.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864704784106011

Publication date: January 1, 2004

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 These proceedings are not peer reviewed.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



Share Content

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
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