Download or read book Water Quality Renovation of Animal Waste Lagoons Utilizing Aquatic Plants written by and published by . This book was released on 1978 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Livestock and the Environment written by M. L. Rowe and published by . This book was released on 1976 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1979 with total page 1282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1979 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The New York Bight written by and published by . This book was released on 1980 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications a Quarterly Guide written by and published by . This book was released on 1979 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy from Biological Processes written by and published by . This book was released on 1980 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1968 with total page 1122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book EPA 600 2 written by and published by . This book was released on 1979 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wastewater Treatment in Constructed Wetlands with Horizontal Sub Surface Flow written by Jan Vymazal and published by Springer Science & Business Media. This book was released on 2008-07-15 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetlands have been used for uncontrolled wastewater disposal for centuries. However, the change in attitude towards wetlands during the 1950s and 1960s caused the minimization of the use of natural wetlands for wastewater treatment (at least in developed countries). Constructed wetlands have been used for wastewater treatment for about forty years. Constructed wetland treatment systems are engineered systems that have been designed and constructed to utilize the natural processes for removal of pollutants. They are designed to take advantage of many of the same processes that occur in natural wetlands, but do so within a more controlled environment. The aim of this book is to summarize the knowledge on horizontal s- surface flow constructed wetlands (HF CWs) and objectively evaluate their treatment efficiency under various conditions. The information on this type of wastewater treatment technology is scattered in many publications but a comprehensive summary based on world-wide experience has been lacking. The book provides an extensive overview of this treatment technology around the world, including examples from more than 50 countries and examples of various types of wastewater treated in HF CWs.

Download or read book Miscellaneous Publication written by and published by . This book was released on 1983 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1979 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Effect of Operational Variables on Nitrogen Transformations in Duckweed Stabilization Ponds written by Julia Rosa Caicedo Bejarano and published by CRC Press. This book was released on 2005-03-24 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is an urgent need to develop and improve low cost technologies for wastewater treatment. Simultaneously treating wastewater and producing duckweed in a pond system is, therefore, an attractive solution contributing to both environmental protection and food production. Duckweed has excellent qualities: a high protein content, a high growth rate and is an easy crop to handle. The small plant turns nitrogen from wastewater into a food source. This thesis reports on the effect of different operational variables, like anaerobic pre-treatment, the combination of algae and duckweed ponds and pond depth. Improved nitrogen removal was obtained through the combination of duckweed ponds with algae ponds. Duckweed pond systems could be designed with shallow depth without affecting nitrogen removal efficiency. This research is the result of the cooperative effort between the EIDENAR, Univalle, Cali, Colombia and the UNESCO-IHE Institute for Water Education in Delft, the Netherlands.

Download or read book Report summaries written by United States. Environmental Protection Agency and published by . This book was released on 1983 with total page 1584 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nitrogen Transformations and Removal Mechanisms in Algal and Duckweed Waste Stabilisation Ponds written by Omar Zimmo and published by CRC Press. This book was released on 2003-01-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effective treatment of nitrogen containing wastewater is required to prevent eutrophication and groundwater pollution. This thesis shows that effective treatment may be combined with substantial nitrogen recovery in duckweed-based waste stabilization ponds.

Download or read book Research Reporting Series written by and published by . This book was released on 1978 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aquaculture Research written by and published by . This book was released on 1983 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: