In this essay we will discuss about the classification of filters:- A. Gravity Filters B. Pressure Filters. Essay # A. Gravity Filters: 1. Slow Sand Filters: Construction of Slow Sand Filters: These are watertight shallow tanks about 2.5 m to 4 m deep and having surface area 100 sq.m to 2000 sq.m. in plan. These tanks contain 60-90 cm thick [...]
In this essay we will discuss about:- 1. Factors Affecting Bacterial Efficiency of Chlorine 2. Chlorine Compounds 3. Addition of Chlorine to Water 4. Free Available Chlorine 5. Chlorine Demand 6. Methods of Chlorination 7. Forms of Chlorine. Essay # 1. Factors Affecting Bacterial Efficiency of Chlorine: The bacterial efficiency of chlorine under ideal conditions depends on the following factors: [...]
In this essay we will discuss about:- 1. Necessity of Sedimentation with Coagulation 2. Process of Sedimentation with Coagulation 3. Chemical used as Coagulants 4. Comparison of Alum and Iron Salts for Use as Coagulants 5. Handling and Storing of Coagulants 6. Dosage of Coagulants 7. Devices used 8. Flocculation and Clarifiers 9. Limitation of the Process. Essay # 1. [...]
In this essay we will discuss about:- 1. Standards for Quality of Treated Water 2. Objects of Treatment 3. Considerations for Public Water Supply 4. Treatment Processes. Essay # 1. Standards for Quality of Treated Water: The treatment process should be designed such that, they should treat the water up to the desired standard for which it is to be [...]