Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The modern water treatment plan is often called upon to perform wonders with the water fed to it. The clear, safe , even tasteful water that comes from a faucet may have started as a murky liquid pumped from a polluted river laden with mud and swarming with bacteria. Or, its source may have been well water, much too hard for domestic use and containing high levels of stain-producing dissolved iron and manganese. The water treatment plant operator's job is to make sure that the water plant product presents no hazards to the consumer.
A schematic diagram of a typical municipal water treatment plants is shown in fig. 2.1. This particular facility treats water containing excessive hardness and a high level of iron. The raw water taken from wells first goes to an aerator. Contact of water with air removes volatile solutes such as hydrogen sulfide, carbon di-oxide, methane, and volatile odorous substances such as methane thiol (CH3SH) and bacterial metabolites. Contact with oxygen also aids iron removal by oxidizing soluble iron (II) to insoluble iron (III). The addition of limes as CaO or Ca(OH)2 after aeration raises the pH and results in the formation of precipitates containing the hardness ions Ca+2 and Mg+2. These precipitates settle from the water in a primary basin. Much of the solid material remains in suspension and requires the addition of coagulants (such as iron III and aluminum sulphates) to settle the colloidal particles. The setting occurs in a secondary basin after the addition of CO2 to lower the pH. Sludge from both the primary and secondary basins is pumped to a sludge lagoon. The water is finally chlorinated, filtered and pumped to the city water mains.
How much of a 10% w/v of nacl can be made using 30g of nacl? Please show all steps.
what are golgi apparatus
Define about the Metabolism of Copper? In food, most copper is present as Cu 2+ and some as Cu 1+ . This copper is bound to organic compounds especially protein. Gastric HCI p
Types of Forests - Ecosystem The forest biomes of the world have been classified into the three major categories: coniferous forest, tropical forest and temperate forest. C
Q. Explain Barrier techniques - Protective clothing? Protective outerwear is worn to reduce exposure to debris in spatter. Clinic jackets should have long sleeves, a high neck,
Q. How much DNA is in a typical human cell? If DNA (deoxyribonucleic acid) molecules in a single human cell were stretched out and laid end to end they will measure approximate
ENZYMES OF E.R. Numerous enzymes have been found associated with its membranes, Glucose-6-phosphatase is the marker enzyme of E.R. The chief being those required for the synt
Describe in brief about Pseudoisoehromatic Plates test Commonly known as Ishihara's plates, these reveal one pattern to the normal eye and another to the colour deficient. Colo
How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is divi
In certain instances differences in the morphology of genitalia between species make it impossible for normal mating to occur, and sympatric species tend to remain isolated. When t
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd