My Report

Waste Water Engineering Practice Test 4


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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1. Alum precipitation occurs at which pH?

2. Assume in a sample of waste water around 60% TSS is removed by primary sedimentation without chemical addition. Calculate the mass of TSS removed for the following data.
Amount of TSS present initially: 220 mg/L
Waste water flow: 1000 m3/d

3. The clustered particles formed in the presence of a flocculant are called ______

4. What is the porosity of these synthetic media?

5. Biological action takes place in a rapid filtration unit.

6. For plastic type high filtration rate trickling filters what would be the BOD removal rate?

7. Rapid filtration is used as the _______ clarifying step in municipal water treatment plants.

8. Determine the size of a flash mixer for the following data. Round off to the nearest digit.
Flow rate: 2200 m3/hr

9. What is the detention time assumed while designing a flash mixer?

10. Along with ferrous sulphate what other chemical is added in order to bring about precipitation?


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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