Following tests are carried out in the chemical examination of water: 1. Presence of Solids 2. Biochemical Oxygen Demand 3. Chemical Oxygen Demand 4. Stability and Relative Stability 5. Chlorides and Sulphides 6. Chlorine Demand 7. Nitrogen 8. Determining pH-Value 9. Grease, Oil and Fats. Test # 1. Presence of Solids: It is most essential to know the quantity of [...]
Here is a compilation of essays on ‘Distribution System of Water’ for class 9, 10, 11 and 12. Find paragraphs, long and short essays on ‘Distribution System of Water’ especially written for school and college students. Essay on Distribution System of Water Essay Contents: Essay on the Meaning of Distribution System Essay on the Classification of Distribution System Essay on [...]
Here is a compilation of essays on ‘Water Supplies in Rural Areas’ for class 8, 9, 10, 11 and 12. Find paragraphs, long and short essays on ‘Water Supplies in Rural Areas’ especially written for school and college students. Essay on Water Supply in Rural Areas Essay Contents: Essay on the Introduction to Water Supplies in Rural Areas Essay on [...]
The choice of source of water supply to a town or city depends on the following factors: 1. Location 2. Quantity of Water 3. Quality of Water 4. Cost. Factor # 1. Location: The source of water should be as near to the town as possible. If there are both surface and ground sources available to the town the selection [...]
In this article we will discuss about the construction of infiltration well with the help of a suitable diagram. Infiltration wells are shallow wells constructed under the beds or rivers and nallas. These wells are very suitable for Indian conditions where there are deposits of sand and porous material at least 3 m deep in river beds. In the sandy [...]
In this article we will discuss about the formation of cavity in wells with the help of a suitable diagram. When the water is not withdrawn from the well, the water level inside the well is equal to the static water table outside the well. But when the water is being drawn from the well at some constant rate, the [...]
In this article we will discuss about the suitability of surface water with regard to quantity and quality. Rainfall directly affects the quantity of surface water. As the rainfall is not uniform throughout the year, the quantity of surface water also has large variations. The discharge in rivers and streams remains maximum in rainy season and minimum in summer. If [...]
In this article we will discuss about the calculation of ground water yield with formula. When the water enters in the ground, it starts filling its pores. When all the voids of pores are filled with water, the soil is known as saturated soil or saturated formation. When the ground water soaked by the soil is drained or taken out [...]
The measurement of an open well yield can be determined by the following method: 1. Actual Pumping Method 2. By Theoretical Calculations. 1. Actual Pumping Method: The yield of well is determined by pumping out water from it. In this method first the water is withdrawn from the well at very high rate, then the rate of pumping is reduced [...]
In this article we will discuss about the infiltration galleries and calculation of its yield. Infiltration Galleries: Ground water travels towards lakes, rivers or streams. This water which is travelling can be intercepted by digging a trench or by constructing a tunnel with holes on sides at right angle to the direction of flow of underground water. These underground tunnel [...]