Skip to main content

Performance of Lagoon Wastewater Treatment System in Sapecho, Bolivia

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The performance of an integrated up-flow anaerobic sludge blanket (UASB) reactor and lagoon wastewater treatment system in the community of Sapecho, Bolivia has been analyzed over a 2-year period. The wastewater treatment system has a design capacity of 0.04 MGD and serves a small rural community with a population of 1,039 people. The treatment system consists of a grit chamber, an upflow anaerobic sludge blanket (UASB) reactor, biosolids drying bed, and two maturation ponds and The treatment system was evaluated its effectiveness in removing total suspended solids (TSS), biochemical oxygen demand (BOD), chemical oxygen demand (COD), nitrogen, phosphorus and total coliforms. Our results show the overall removal efficiency of the system was 97% TSS, 97% BOD, 91% COD, 61% total nitrogen, 7% total phosphorus, and 99.9% total coliforms. Most of influent removal occurred between the grit chamber and the UASB reactor with 90% TSS, 74-86% BOD, 79-83% COD, 30-39% total nitrogen, and 96% total coliforms. A further 7.7% TSS, 11.4% BOD, 8.1% COD, 22.4% total nitrogen, 11.2% total phosphorus, and 3.8% total coliforms from the influent were removed by the maturation lagoons.

An average methane composition of 66% was produced by the UASB reactor. Further it was estimated that an average of 9.33 x 103 kJ/day (28 gigajoule per month, 336 gigajoule per year), of energy was produced by the UASB reactor.

Our life cycle cost results show the intergrated wastewater treatment system costs a total of 99,000 over the 20-year design life. About 82,400 or 83% of the life cycle cost over the 20-year life is attributed to initial capital cost. The other 16,600 (0.02/GPD) of the life cycle cost over the 20-year design life is attributed to maintenance of the system.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Integrated wastewater treatment system; UASB reactor; lagoons; life cycle cost; methane; removal efficiency

Document Type: Research Article

Publication date: 2009-01-01

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