Answered: Why is alum preferred to other…

Why is alum preferred to other coagulants? 2. What is the difference between coagulation and flocculation? 3. 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 5.29P: Which would separate a mixture of steel and aluminum cans, a boance and adherence separator or a...

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Concept explainers

Collection Systems

The collection systems form a part of sanitary engineering, which is a sub-branch of civil engineering. It is also known as public health engineering and wastewater engineering. It is a methodology followed to remove and properly dispose of human waste, along with creating systems to provide safe and clean usable water. These measures ensure a hygienic and disease-free community. Sanitary engineering, apart from building sewer disposal units, is also involved in plumbing, fire protection, hydraulics, life safety, environmental protection, information technology, microbiology, pathology, and so on.

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Sanitary Engineering laboratory

"jar test "

1. Why is alum preferred to other coagulants?

2. What is the difference between coagulation and flocculation?

3. What are coagulant aids?

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3. A hard drive manufacturer uses Nickel to plate its disks and then polishes them, resulting in a concentration of 50 mg/l in their 50,000 gallons per day wastewater stream. Their industrial permit standard for Ni discharge into the sewer system and treatment plant is limited to 0.2 Ibs./day. What percentage of the mass of Nickel must the onsite treatment system remove to be in compliance with the discharge standard? Use the following formula to determine the daily Nickel loading of the manufacturing system: Loading (Ibs/day) = Conversion Factor (8. Flow(MGD)
ANSWER QUESTION 5-23
A 25 ml sample of treated waste water requires 175 ml of distilled water to reduce the odour to a level that is just perceptible. What is the threshold odour number (TON)?
Consider two identical small glass balls dropped into two identical containers, onefilled with water and the other with oil. Which ball will reach the bottom of the container first?Why?
A mixture consisting of 30 mL of waste and 270 mL of seeded dilution water has an initial DO of 8.55 mg/L; after five days, it has a final DO of 2.40 mg/L. Another bottle containing just the seeded dilution water has an initial DO of 8.75 mg/L and a final DO of 8.53 mg/L. Find the five-day BOD of the waste.
Question B-8 8. You are part of a group of Second Year Engineering Students at University of Botswana, intending to establish a Small Scale Recycling Plant for plastic materials in Gaborone. (a) Which recycling process options would you consider? (4 marks) (b) Briefly explain which option you would adopt, giving reasons for your choice. (6 marks) Question B-9 9. (a) Name two types of moulds commonly used in Compression Moulding of polymer materials. (2 marks) (b) Explain the main differences between the two types of moulds. (4 marks) (c) What are the advantages and disadvantages associated with each type of mould? (4 marks) Question B-10 10. (a) With the aid of diagrams briefly describe the 'Blow Moulding Process (6 marks) (b) Give two examples of polymer materials that can be processed by Blow Moulding. (2 marks) (c) Give two examples of products that can be produced by Blow Moulding. (2 marks)
Question * Evaluate the determinant: 1 6 0 4 2 7 053 O -101 110 101 -101
1. A mixture consisting of 30 mL of waste and 270 mL of seeded dilution water has an initial Do of 8.55 mg/L; after 5 days, it has a final DO of 2.40 mg/L. Another bottle containing just the seeded dilution water has an initial DO of 8.75 mg/L and a final DO of 8.53 mg/L. Find the 5-days BOD of the waste.
A waste water plant produces 1000 kg of dry solids per day at a moisture content of 95%. The solids are 70% volatile with a specific gravity of 1.05 and the remaining are non-volatile. Find the volume of volatile solids in m³ after digestion, which reduces volatile solids content by 50% and decreases the moisture content to 90%. Report your answer correct to two decimal places.
My dear sir/ madem please solve both questions 1 and 2... Please give me both answers.... Thank you Note: This is not an assignment question and not a graded question
I need the answer as soon as possible