By Rakesh Chandra Gaur
The handbook covers the hot syllabus of the semester scheme for first yr in R.T.U. and different universities. It encompasses the sensible purposes of the topic, that's the genuine desire of the hour. This handbook contains the experiments to be performed by way of all the first 12 months scholars of Rajasthan Technical college in moment semester. a number of the experiments like decision of dissolved oxygen also are worthy for the better point resulting in the selection of BOD. It includes the speculation approximately each scan intimately, because the Environmental Engineering Laboratory is obligatory for all first yr scholars of R.T.U. and the speculation paper is non-compulsory. It contains the need i.e., the importance of appearing the scan. The equipment, apparatus required has been in actual fact pointed out for each test, to set up the laboratory. assessment questions on the finish of every bankruptcy are there to check the certainty of the reader. the strategy of getting ready the reagents has been truly elaborated to facilitate the behavior of the experiments. uncomplicated tools were chosen so far as attainable, because the curriculum is for first yr scholars of all branches.
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G biogas (iv) All of the above Correct Answers 1. (iv) 2. (iv) 3. (i) 4. (iv) 5. (iv) 6. 1% solids. The solids are either in dissolved form or in suspension. When sewage is passed through a filter the filtrate is not clear and looks turbid (turbidity is the obstruction in the passage of light). The turbidity is because of the filterable solids. This fraction consists of colloidal solids as well as dissolved solids. The colloidal fraction consists of the particulate matter of diameter ranging from 1 milimicron to 1 micron.
Ppm is………….. Quiz Questions 1. Most common ion in the water is (i) Fluoride (ii) Nitrate (iii) Chloride (iv) Sulfate Experiment 5: Measurement of Chlorides in Water 2. 3. 4. 5. Chloride gives salty taste to water particularly when present as:(i) Sodium chloride (ii) Magnesium chloride (iii) Potassium chloride (iv) Zinc Chloride The acceptable limit of chloride in potable water is (i) 200 mg/L (ii) 500mg/L (iii) 1000 mg/L (iv) 1500 mg/L The chloride concentration in sewage is (i) More than the water supplied (ii) Less than the water supplied (iii) Equal to the water supplied (iv) None of the above Chloride consumed by us (i) Pass through the fecal matter as it is.
The bottom of the cone is graduated in milliliters. Read from the graduated scale in terms of milliliters per litre. CALCULA TION AND RESUL TS CALCULATION RESULTS Direct reading on the graduated bottom of the cone gives the amount of settleable solids in milliliters per litre of sewage. The settleable solid in the given sample of sewage are ……………milliliters /L Comments The first step of treatment of sewage after screening is the removal of settleble solid from it. The settleable solids are the larger suspended solids that can easily settle in a sedimentation tank without any coagulation (mixing of chemicals like alum).