Contribution A Letude De Levolution Des Boues Residuaires Dans Le Sol
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Author | : G. Catroux |
Publisher | : Springer Science & Business Media |
Total Pages | : 258 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 9400979304 |
The agricultural value of sewage sludges is well known and a lot of published data has demonstrated the positive effects of sludge appli cations on plant growth and yield. These effects are probably due mainly to the nitrogen and phosphorus content of sewage sludges. But, as sludges are more organic than mineral, we can expect an effect of the organic matter added to the soil on soil fertility. Certainly, in the future, landspreading of sludges will be regulated, taking into account pollution hazards for waters (excess of nitrogen and phosphorus supply compared to plant needs and soil storage capacities) and for soils (excess of heavy metals supply and build up in soils). There will be regulations fixing what low level of sludges may be spread each year, decreasing their comparative value with respect to mineral fertilizers. In this eventuality, the organic value of sludges will take on a greater importance and several questions arise : - what is the lowest amount of sludge to be spread to have an immediate effect on soil physical properties? - are sludges effective on soil physical properties when spreading repeated low amounts? On the other hand, organic matter and soil biology are closely linked and there are few data on the possible effects - beneficial or detrimenta- on soil organisms.
Author | : P. L'Hermite |
Publisher | : Springer Science & Business Media |
Total Pages | : 817 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9400985061 |
Proceedings of the Second European Symposium held in Vienna, Austria, 21-23 October, 1980
Author | : Alfredo Rodríguez-Delfín |
Publisher | : |
Total Pages | : 420 |
Release | : 2009 |
Genre | : Hydroponics |
ISBN | : 9789066056527 |
Author | : P. L'Hermite |
Publisher | : Springer |
Total Pages | : 506 |
Release | : 1984-05-31 |
Genre | : Nature |
ISBN | : |
Proceedings of the Third International Symposium held at Brighton, September 27-30, 1983
Author | : |
Publisher | : |
Total Pages | : 656 |
Release | : 1998 |
Genre | : Agricultural chemistry |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 996 |
Release | : 1991 |
Genre | : Agricultural ecology |
ISBN | : |
Author | : Takashi Asano |
Publisher | : CRC Press |
Total Pages | : 1570 |
Release | : 1998-06-15 |
Genre | : Technology & Engineering |
ISBN | : 9781566766203 |
The effective integration of water and reclaimed wastewater still requires close examination of public health issues, infrastructure and facilities planning, wastewater treatment plant siting, treatment process reliability, economic and financial analyses, and water utility management. This book assembles, analyzes, and reviews the various aspects of wastewater reclamation, recycling, and reuse in most parts of the world. It considers the effective integration of water and reclaimed wastewater, public health issues, infrastructure and facilities planning, waste-water treatment plant siting, treatment process reliability, economic and financial analysis, and water utility management.
Author | : |
Publisher | : |
Total Pages | : 824 |
Release | : 1993 |
Genre | : Agriculture |
ISBN | : |
Author | : Linda Strande |
Publisher | : IWA Publishing |
Total Pages | : 428 |
Release | : 2014-08-15 |
Genre | : Technology & Engineering |
ISBN | : 1780404735 |
It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Author | : |
Publisher | : |
Total Pages | : 390 |
Release | : 1984 |
Genre | : Crops |
ISBN | : |