Effects of ferrous sulfate (FeSO4) and poly-aluminum chloride (PAC) during wastewater treatment process at a local beverage company were investigated. Optimum concentrations of FeSO4 and PAC together with the effluent quality in wastewater treatment plant were studied. The application of FeSO4 was examined at different concentration of 6.0 ppm, 6.5 ppm, 7.0 ppm, 7.5 ppm, and 8.0 ppm whereas that of PAC was investigated at the concentrations of 9.

Effects of aluminium sulfate and Klaraid on physico-chemical characteristics of wastewater and total phosphorous removal during wastewater treatment process at a local beverage company in Phnom Penh were investigated followed by the determination of the optimum application of aluminium sulfate and Klaraid for phosphorous flocculation. Aluminium sulfate versus total phosphorous at different ratios of 20:1, 21:1, 22:1, 23:1, and 24:1 were studied w

Chrey Bak River catchment is recognized by the Royal Government of Cambodia (RGC) as an important area for agricultural investment and development. As a consequence, the catchment has experienced intensive land use and land cover changes. The objectives of this paper are to investigate the land use change in Chrey Bak River catchment during 2010-2040 and to define the underlying factors/decision variables that affect to land use change and to use

Rainfall is an important parameter in Hydrology. It significantly contributes to hydrological modelling of the regional scale. Limitation of rain gages and miss recording rainfall data may force Cambodia to face the difficulties of watershed management and study. This report identifies the performance of a rainfall interpolation method called Inverse Distance Weighting and do the map of its spatial distribution. By using FORTRAN programing langua

People are faced with shortages of freshwater for consumption and irrigation during the dry season and the early part of the wet season1 as well as during the dry spell within the wet season. This paper assesses rice water use in Chrey Bak river catchment located in the Rolea B‟ier district, Kompong Chhnang province - Cambodia using CROPWAT model. The study of rice crop water requirement is important not only for irrigation system design, irrigat

Water allocation in the Chrey Bak catchment faces the management problem that can cause water scarcity. Thus, water management and allocation for agriculture is conducted using the WEAP model to predict water demand. The study depends on collected data such as, stream flow (discharge), irrigation water need for each irrigation scheme in the Stung Chrey Bak catchment which exist of 7 irrigation schemes. There are two scenario is created; the refer

To improve water management for increasing rice productivity, the study of crop water demand is very important. This study aims to estimate the water requirement of rice by using direct measurement method (water balance conception method). The observation was undertaken in a small experimental paddy field, which has an area of 2650m2, located in Cambodian Agricultural Research and Development Institute (CARDI) in Cambodia. For Phka Rumduol variet

Situated in Kandal province of Cambodia with lower Bassac river as a border with Vietnam, a village of Koh Thom district called Prek Chrey Khnong with a population of several hundred families faces lack of drinking water sources especially during dry season due to the existence of elevated arsenic level (3–53 times higher than CDWQS) in pipe well water and the presence of bacteria in surface water. To solve this problem, a sustainable arsenic rem

The recent research has shown the bloom toxic of cyanobateria in Sesan River which is one of the largest tributaries of Mekong River. The bloom toxic of cyanobacteria released cyanotoxin which is the serious problem causing adverse health effects for the local people along the river since this river is the main source for daily use. Therefore, the condition growth of cyanobacteria and sources of contamination were investigated after this research

In Cambodia, the fermentation of different kinds of vegetables such as cucumber, Cambodian melon, green mustard and cabbage uses spontaneous fermentation process by which sugars are converted into lactic acid by lactic acid bacteria (LAB) naturally present on the skin of vegetables.Eventhough LAB were used, the type of LAB might be different for each vegetable. The types of LAB in these fermented vegetables have not yet been investigated so far.