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Sanitary Engineering laboratory "jar test " Why is alum preferred to other coagulants? What is the difference between coagulation and flocculation? What are coagulant aids?

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter5: Separation Processes

Section: Chapter Questions

Problem 5.18P

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The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.

Question

Sanitary Engineering laboratory

"jar test "

Why is alum preferred to other coagulants?

What is the difference between coagulation and flocculation?

What are coagulant aids?

Write the significance of pH in coagulation using alum.

Discuss the importance of finding the optimum dosage.

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