Download PDF by Margaret Akinyi Abira: A Pilot Constructed Treatment Wetland for Pulp and Paper

By Margaret Akinyi Abira

ISBN-10: 0415467152

ISBN-13: 9780415467155

This research, carried out in Kenya, offers the 1st perception into the functionality of a built therapy wetland receiving pulp and paper mill wastewater within the tropics.

The wetland successfully got rid of natural subject, suspended solids, phenols and nutrition. BOD and phenols relief premiums are suggested for the 1st time. layout parameters and guidance for the set-up and upkeep of a full-scale wetland are suggested. The examine concludes that integrating a full-scale wetland, as a tertiary level with the prevailing therapy ponds could considerably increase the standard of water in River Nzoia downstream of the effluent discharge.

This is a worthwhile source publication for scientists, managers and scholars within the box of wetland ecology, water and environmental management.

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Additional resources for A Pilot Constructed Treatment Wetland for Pulp and Paper Mill Wastewater: Performance, Processes and Implications for the Nzoia River, Kenya UNESCO-IHE PhD

Sample text

Finally, if conditions such as pH are not sufficient for their degradation, biocides used for slime control could cause intermittent acute toxicity of final effluents (Milanova and Sithole, 1997). Similar conditions as well as turbidity and effluent foam may have caused the declining chlorophyll a concentration. The chlorophyll a concentrations measured in late March 2002 were low (15 µg/l), indicating low algal productivity in the ponds compared to that of a more productive system such as the Lake Victoria.

M. and Grigsby, J. 1999. Nutrients within integrated bleached Kraft mills: sources and behaviour in aerated stabilization basins. Water Science and Technology 40 (11-12): 77 - 84. N. L. 1991. Treatability of bleached Kraft pulp and paper mill wastewaters in a New Zealand aerated lagoon treatment system. Water Science and Technology 24 (3/4): 309 317. Thut, R. N. 1993. Feasibility of treating pulp and paper mill effluent with a constructed wetland. A. (ed), Constructed wetlands for water quality improvement, CRC Press, Florida pp 441 - 447.

The latter were initially operated as free water surface flow and later as subsurface flow systems. The subsurface flow cells were planted in pairs with Cyperus immensus, Typha domingensis, Phragmites mauritianus and Cyperus papyrus respectively. The Cyperus immensus were removed after eight months and the cells left unplanted. The larger cells were planted with Typha domingensis. All cells were filled with gravel to a depth of 30 cm and had an impermeable barrier that excluded seepage and infiltration.

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A Pilot Constructed Treatment Wetland for Pulp and Paper Mill Wastewater: Performance, Processes and Implications for the Nzoia River, Kenya UNESCO-IHE PhD by Margaret Akinyi Abira


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