Performance and Process Analysis of Duckweed-Covered Sewage Lagoons for High Strength Sewage - the Case of Sana'a, Yemen

Download or read book Performance and Process Analysis of Duckweed-Covered Sewage Lagoons for High Strength Sewage - the Case of Sana'a, Yemen written by Fadhi Al Nozaily and published by CRC Press. This book was released on 2000-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Duckweed (L.gibba)-covered sewage lagoons (DSLs) are low cost treatment systems, especially suitable for warm climates, or in lands where there are warm seasons. This study attempts to assess DSL system as a new technology, contributing to the understanding of the different mechanisms in the system. Duckweed-covered sewage lagoons could either replace complete wastewater stabilization ponds (WSPs) or be introduced as a second stage in an integrated WSP-DSL treatment system, which could then be used for purifying municipal wastewater, achieving suitable effluent for reuse in agriculture. The duckweed harvested from DSL systems has, in itself, an intrinsic economic value.