Skip to main content

The Excellent Brazilian Experience with UASB Reactors

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


The use of anaerobic treatment for domestic sewage is under current expansion in Brazil. Anaerobic treatment is already a well known technology in Brazil, the main units designed and constructed being Upflow Anaerobic Sludge Blanket – UASB – reactors.

It presents many advantages, such as being a compact system, with practically no equipment in the anaerobic vessel, low construction and operational costs, very low energy consumption, low excess sludge produced. However it also has important disadvantages, such as limited efficiency for BOD, COD and TSS removal, and the possibility of bad odors, due to H2S generation.

In order to avoid poor effluent quality, and meet legal water quality standards, post treatment has been studied and practiced, with excellent results, and great reduction in investment costs. The same is true if the scheme is seen as a secondary plant with an UASB reactor as primary treatment.

Design criteria for the anaerobic reactor, and for different secondary treatment processes are discussed in the paper, according to a two year research sponsored by FINEP – Financiadora de Estudos e Projetos, of the Ministry of Science and Technology of Brazil.

Document Type: Research Article


Publication date: January 1, 2001

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 These proceedings are not peer reviewed.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
  • Ingenta Connect is not responsible for the content or availability of external websites

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
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