Nairobi's wastewater stabilization ponds (also known as Dandora Wastewater Treatment Plant) are located 30 km to the East of the city, and they discharge into Nairobi River, and finally into Athi River. The plant has eight series, comprising of 38 ponds, and has expanded significantly since its establishment in 1978. Treatment in ponds is achieved by waste stabilization. In 2009, a study was done to establish the efficiency of this wastewater treatment plant and to assess whether the final effluent met the required standards for Kenya.
Adaptation of a hydrological model for the upper Athi river to predict runoff from rainfall in it's catchments
The Athi river, at Baricho waterworks, is an important source of water for Malindi and other coastal towns of Kenya while the proposed Munyu Dam is also located on the upper Athi. However, the lower Athi or Sabaki has problems of high sedimentation causing siltation and damage to water pumps at the Baricho Waterworks, thus making exploitation difficult and treatment expensive. This has led to increased exploitation of the Mzima Springs, which is clear and requires minimal treatment.
The performance of selected tree species in the rehabilitation of a limestone quarry at East African Portland Cement Company land Athi River, Kenya
Quarrying for limestone is an economic necessity that is not only hazardous to human but also one that invariably has deleterious effect on the environment. Information on the performance of trees species is important as plants are key in the revegetation of exhausted quarries. A comparison of field performance of Acacia xanthophloea, Schinus molle, Casuarina equisetifolia and Grevillea robusta was made in an exhausted limestone quarry, backfilled with limestone mine waste, in a semi-arid area, in Athi River, Kenya, between 2005 and 2008.
Effect of milking and post-calving supplementation on the performance (and herbage intake) of different crossbred beef cows and their calves in a semi-arid area of Kenya.
Available from UMI in association with the British Library. The effects on production of milking grazed crossbred cattle with or without a dietary supplement (2 kg dairy meal daily for 3 to 4 months post-partum) were studied at Athi River ranch in a semi-arid area of Kenya. The cows were ayrshire, friesian or simmental breeds crossbred with foundation females of boran, East African short horn zebu, sahiwal and their crosses with hereford breed.
Wastewater is known to contain microbes that are deleterious to human health. Epidemiological reports show that wastewater associated disease outbreaks are common around the world. This suggests that wastewater must be processed carefully before release into natural waters and the environment. The purpose of this study was to determine the total bacterial load and microbial types in Dandora Sewage Treatment Plant (DSTP) and its handling capacity in terms of pathogen removal. In addition, the seasonal and temporal relationship of bacterial load variation was estimated.
Determination of concentration of total suspended particulate matter and some gaseous air pollutants in Athi river urban area, in Kenya.
A study for the assessment of air quality with respect to total suspended particulate matter, heavy metals (Zn, Cd, Pb, Cu, Mn, Fe) analysis together with S.02' H2S, and NH3 gases emitted in Athi-River town was carried out. Concentrations of the daily samples collected at various sites during the whole sampling period were determined . using gravimetric and Atomic / Molecular spectrophotometric instrumental methods. The data so obtained were analysed using the cumulative frequency distribution method on log - probability graph paper.
ABSTRACT NOT AVAILABLE
An evaluation of the bacteriological and some physicochemical qualities of water in the upper Athi River basin, Kenya.
ABSTRACT NOT AVAILABLE
Soil physical properties include soil consistency limits and soil aggregate stability indices. These properties have influence on the soil agronomic characteristics as well as management of watershed hydrology, civil constructions and modeling environmental quality. The current methods for their determination are expensive and time consuming. There is a need for rapid and fairly accurate methods that can guarantee speed and allow comparison of point-measurements over time and space.
Growth and composition of eucalyptus and maize on Kenya soils fertilized with phosphate and indole acetic acid.
Three glasshouse experiments were conducted with three Kenya soils to determine plant responses to exogenous indole acetic acid (1aa) at 31, 62, and 124 g/ha and to Concentrated SuperPhosphate (CSP) in powder, pellet, or pellet (including 1aa) forms applied at 28, 56, and 112 kg p/ha. Soils were taken from depths of 0 to 15 and 15 to 30 cm and two soils were vertisols (Athi and Mwea) and the other a latosol (Kabete).