ENVIRONMENTAL ENGINEERING (CLE 1006)
DIGITAL ASSIGNMENT 2
Identification of suitability of water for drinking purpose and suggesting suitable methods of treatment
AMAN KUMAR
16BCL0373
B.TECH. (CIVIL ENGINEERING)
SCALE
Question:
Wastewater is having following impurities that are needed to treat in order to reuse the treated waste water for food crop production.
Impurities: Debris, wood, oil, grease, sand, microbes, silt, organic matter, inorganic matters, Nitrate, Potassium.
• In such a case what would be the various treatment unit would you suggest for wastewater treatment (show as a flow chart).
• Discuss in detail about the mechanism of each treatment unit in treating the waste water. (Note: which impurities are treated and how they are treated)
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Debris, Wood Removal-
Most solids can be removed using simple sedimentation techniques with the solids recovered as slurry or sludge or screening primary technique. So ultimately Sedimentation technique can be used to separate these two impurities.
Sand Removal-
Very fine solids and solids with densities close to the density of water pose special problems. In such case filtration or ultrafiltration may be required. Grit removal technique can be used to remove sand during waste water treatment
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In general, an activated sludge process includes:
An aeration tank where air (or oxygen) is injected and thoroughly mixed into the wastewater.
A settling tank (usually referred to as a clarifier or "settler") to allow the waste sludge to settle. Part of the waste sludge is recycled to the aeration tank and the remaining waste sludge is removed for further treatment and ultimate
Stephenson, R., & Blackburn, J. J. (1998). The Industrial Wastewater Systems Handbook. New York: Lewis Publishers.
our pipelines and sewers where it goes to a treatment plant to be treated, but
The key stakeholders are Peter Vyas, the manager of filtration unit and Cynthia Jackson who is the vice president of water management division. Vyas was convinced that the survival of the unit depended upon innovative growth and thus he appointed a technology evaluation team with the responsibility of using technology to solve the problem of obtaining clean water in remote regions, by developing a small-scale oxidation system that enabled waste-water disinfection in small batches. His utmost concern is the technological aspect of developing the product. On the other hand, Cynthia’s perspective was shaped by the marketing angle of the product. She recommended the development of future proposals using a rigorous three phase process which links the markets analysis and technological development to busines...
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According to the “Competition in the Bottled Water Industry in 2006 Case,” bottled water industry became the one of the world’s most attractive beverage categories, as more and more people began to focus on health and fitness. Consumers start realizing the need of proper hydration, and they began purchasing bottled water instead of drinking tap water, because they were worried about safety of tap water, which tasted like chemicals. Actually, tap water contained chemicals, such as chlorine and fluoride, which are harmful for human body; however, this problem was solved when the bottled water was brought to the market. Due to bottled water’s convenience, purity, and portability, and safety, bottled water industry began to rise rapidly. During
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Water and Waste Management Engineering addresses water and waste water treatment, surface and ground water pollution and control, solid and hazardous waste management, contaminant transport and behaviour in the environment. Support areas involving aquatic chemistry, computer modeling, simulation and laboratory experimentation as examples are also stressed.
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