ASSESSMENT OF SOLID WASTE MANAGEMENT IN TARKWA MUNICIPALITY GHANA: TIME SERIES APPROACH

This study intends to examine the means of waste disposal by households (place of disposal), analyze how the waste collected is finally disposed of, and predict the amount of waste that ends up at the landfill in the next five years using Time-Series and make recommendations for effective management of solid waste in Tarkwa Municipality. The historical data and the characteristic of the historical data show that the amount of waste generated in tonnes increased from year 2006 to 2011. The average waste generated was found to be 85612.8 tonnes. The graph of the projected waste using Time Series Method also showed an increase in the trend. It is observed that as the year progresses, there is increase in the amount of waste generated, the reason for this may not be far from increase in the population and urbanization of Tarkwa Municipality. Keywords: Waste, Landfill, Time-series method, Household, Disposal, Population, Urbanization,

PEDAL POWERED CENTRIFUGAL PUMP PURIFIED WATER SUPPLY DEVICE

This paper analyzes the design of a pedal powered purified water supply device to be used by local dwellers. It works on the principle of compression and sudden release of a tube by creating negative pressure in the tube and this vacuum created draws water from the sump into the pump while rollers push the water through to the filter where adsorption takes place to purify the water. The design composed a peristaltic pump powered by paddling, a carbon filter and hose or flexible tube. As the operator sits on the seat and paddles, the pedal crank transfer the motion to the rotor thus the rollers and the tube is squeezed by the set of rollers to move the fluid. The design analysis shows that one revolution of the pedal gives 1.1 litres of water. This design will reduce the labour, cost and weariness caused by transporting and sanitizing drinkable water for use in the homes of Ghanaian villages. Keywords: Design, Pedal crank, Peristaltic pump, Sump, Local dwellers, Drinkable wate

Thermal characterization of straight and curve edge blade liquid fuel swirl burner

Accurate monitoring and controlling of the temperature in the combustion chamber can raise the burner efficiency, combustion intensity, fuel consumption and reduce pollutant emission. However, except combustion is accurately monitored and controlled, high concentration of pollutant gases and products like carbon monoxide (CO) and soot can form in the combustion chamber. This paper compares the combustion thermal profiles in a liquid fuel swirl burner using developed straight edge and curve edge blade swirlers at (20, 30, 40, 50 and 60)° for 6, 8, 10 and 12 number of blades in order to optimize the temperature of the burner. Measurements were made in straight and curve blades liquid fuel swirl burner in order to study and compare the thermal characteristics of the straight and curve edge blades in optimizing the combustion dynamics. Similarly, measurements were made for burner without swirl generator and the combustion temperature assessed. Thermal profile was measured in the direction of flow via the six axial ports at distance ((d) =150, 350, 550, 750, 950 and 1150 mm) from the burner exit using Chromium-Zinc thermocouple. Results showed that the wavelength and oscillation of temperature decay in the same type of blade followed the same trend and the peak of combustion intensity is nearer the nozzle for curve edge blades than the straight edge blade. Six (6) blades performed best with the highest temperature in all the ports, while 12 blades gave the least performance. Findings further show that curve edge blade swirlers gave better performance than straight edge blade swirlers with highest temperature of (1065 and 1015) °C, respectively. Hence, it is recommended especially where high temperature and stability application is desirabl