Civil Engineers Technology

Lab Activities: Determination of Physical, Chemical and Biological Characteristics of Water and Wastewater Water quality testing is an essential laboratory activity in environmental science and civil engineering. By analyzing the physical, chemical, and biological characteristics of water and wastewater , students and researchers can understand the level of pollution and determine whether water is safe for use. In this laboratory activity, we examine different parameters such as temperature, turbidity, pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), and microbial contamination. Aim of the Experiment To determine the physical, chemical, and biological characteristics of water and wastewater samples in order to evaluate water quality and environmental impact. Apparatus and Materials Required Thermometer Turbidity meter (Nephelometer) pH meter or pH strips Dissolved Oxygen (DO) bottle Incubator ...

Lab Experiment: Determination of Optimum Dosage of Coagulant (Jar Test) In water treatment plants, coagulation is an important process used to remove suspended particles and impurities from water. A chemical called a coagulant (such as alum) is added to the water to help small particles combine and form larger particles called flocs . These flocs settle down easily, making the water clearer. The purpose of this laboratory experiment is to determine the optimum dosage of coagulant required for effective water treatment. This is usually done using a method called the Jar Test . Aim of the Experiment To determine the optimum amount of coagulant required to treat a water sample using the jar test method. Apparatus and Materials Required Jar test apparatus (multiple stirrers) Beakers (500 mL or 1 L) Measuring cylinder Pipette Glass rod Turbidity meter Raw water sample Coagulant solution (usually Alum) Theory Raw water ...

Lab Experiment: Determination of Break-Point Chlorination Chlorination is one of the most common methods used for disinfection of drinking water . Chlorine is added to water to kill harmful microorganisms such as bacteria and viruses. However, the amount of chlorine added must be carefully controlled to ensure effective treatment. The point at which the chlorine demand of water is fully satisfied and free residual chlorine begins to appear is known as the break-point chlorination . Determining this point helps water treatment plants apply the correct chlorine dosage. Aim of the Experiment To determine the break-point chlorination of a water sample by adding different doses of chlorine and measuring the residual chlorine. Apparatus and Materials Required Water samples Beakers or conical flasks Measuring cylinder Pipette Chlorine solution (bleaching powder solution) Orthotolidine reagent or DPD reagent Comparator or colorimeter ...

Lab Experiment: Assessment of Water and Wastewater Quality Assessing the quality of water and wastewater is an important activity in environmental engineering and water treatment studies. Water quality testing helps determine whether water is safe for drinking, irrigation, industrial use, or if wastewater needs further treatment before disposal. Water quality is usually evaluated by analyzing different physical, chemical, and biological parameters such as turbidity, pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), and microbial contamination. Aim of the Experiment To assess the quality of water and wastewater samples by determining important physical, chemical, and biological parameters. Apparatus and Materials Required Water or wastewater sample bottles Thermometer pH meter Turbidity meter Dissolved Oxygen (DO) test kit BOD incubator Chemicals for COD test Microscope Glassware (beakers...