By Margaret Akinyi Abira

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

The wetland successfully got rid of natural topic, suspended solids, phenols and nutrition. BOD and phenols aid premiums are suggested for the 1st time. layout parameters and guidance for the set-up and upkeep of a full-scale wetland are advised. The learn concludes that integrating a full-scale wetland, as a tertiary degree with the prevailing therapy ponds might considerably enhance the standard of water in River Nzoia downstream of the effluent discharge.

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

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Extra 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

Example text

This variation is caused in part by the presence of floatable material from the recycled paper plant. Small shreds of plastics that passed through the bar screen were seen floating on the clarifier water surface. Paper recycling plants are known to release high TSS from fillers, coatings, tines, inks, glue and plastic (Wallendahl, 1995). The aerated ponds were designed to degrade organic matter biologically. Lagoons are capable of removing degradable organic matter (BOD) to the tune of 80% for aerobic lagoons and up to 95 % for facultative ponds (Eckenfelder, 1980).

Evapotranspiration was computed from Equation 1 in the case of continuous flow. For batch loading, however, the daily topping up volumes were used to calculate evapotranspiration. Onsite measurements for temperature were taken using a portable Multi-parameter Water Quality Monitor; model 6820-10M-0, manufactured by YSI Incorporated, USA. Other seasonal climatological data including air temperature, relative humidity, and wind velocity were obtained from Nzoia and Bungoma meteorological stations, some 15 and 35 km west of the study site, respectively.

L. D. Stensel, McGraw-Hill, New York, USA, 1819p. M. and Sherwood, R. 1994. Wetland Treatment of pulp and paper mill wastewater. Water Science and Technology 29(4): 241 - 247. L. 1978. Industrial water pollution origins, characteristics and treatment. Addison-Wesley Publishing Company, Reading, Massachusetts, 738p. B. and Carrington, E. G. 1972. Recent developments in the study of bacteria in the activated-sludge process. M. and Grigsby, J. 1999. Nutrients within integrated bleached Kraft mills: sources and behaviour in aerated stabilization basins.

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