By Margaret Akinyi Abira
This research, performed 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 food. BOD and phenols relief premiums are mentioned for the 1st time. layout parameters and guidance for the set-up and upkeep of a full-scale wetland are steered. The examine concludes that integrating a full-scale wetland, as a tertiary degree with the present remedy ponds may considerably increase the standard of water in River Nzoia downstream of the effluent discharge.
This is a beneficial source booklet for scientists, managers and scholars within the box of wetland ecology, water and environmental management.
Read or Download A Pilot Constructed Treatment Wetland for Pulp and Paper Mill Wastewater: Performance, Processes and Implications for the Nzoia River, Kenya UNESCO-IHE PhD PDF
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Extra info for A Pilot Constructed Treatment Wetland for Pulp and Paper Mill Wastewater: Performance, Processes and Implications for the Nzoia River, Kenya UNESCO-IHE PhD
W. 1980. Principles of water quality management, CBI publishing. Boston, Massachusetts, 717pp. Eckenfelder, W. W. Jr. (2000). A. Edde, H. 1984. Environmental control for pulp and paper mills. Noyes Publications, Park ridge, New Jersey, USA. 500p. H. 1999. Nitrogen fixation in the treatment of pulp and paper wastewaters, Water Science and Technology 40 (11-12): 85 92. T. S. 2000. Coliform bacteria and nitrogen fixation in pulp and paper mill effluent treatment systems. Applied and Environmental Microbiology 66 (12): 5155 – 5160.
Batch loading Phase 3 5-day HRT - February to April 2005. , 2005). One of the reasons may be that initially the wetland systems’ microbial environment was not yet fully established. The purpose of repeating this mode of operation therefore was to determine if the performance would be different with the mature wetland system. The system operation in this mode lasted 75 days and involved the unplanted cells, Phragmites and C. papyrus cells. 1 Wetland volumes in batch mode operation. The instantaneous hydraulic loading rate was maintained between 2 - 4 cm/day.
4. The end of the effluent channel (sampling point 7) has been included for completeness, as it was not designed for purpose of treating the effluent. 4. Percentage reduction in TSS, COD, BOD, and phenols at various stages of wastewater treatment (Sampling points 2 – 7, in brackets) Parameter Clarifier Pond 1 Pond 2 Pond 3 Pond 4 Effluent mg/l overflow (Aerated) (Aerated) (stabilisation) (stabilisation) channel overflow overflow overflow overflow after (2) (3) (4) (5) (6) macrophytes (7) TSS 85 - 52 19 46 15 10 BOD 15 28 20 55 17 -9 COD 49 8 16 9 15 - 13 Phenols 2 47 47 16 9 - 20 Note: percentage reduction refers to differences in inflow and outflow quality at each treatment stage.