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Hazardous Waste Management Practice Test: Chemical, Physical & Biological Treatment
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Chemical, Physical & Biological Treatment opics include: Neutralization, precipitation, stabilisation and solidification, reduction and oxidation, ion exchange, evaporation, stripping, sorption, aerobic and anaerobic systems. Chemical, physical, and biological treatment processes remove pollutants from wastewater. These processes can include: Chemical treatment: Adding chemicals to wastewater to remove pollutants or reduce their concentration. This process is important to ensure wastewater meets regulatory standards and doesn't harm public health or the environment. Physical treatment:... Show more
Hazardous Waste Management Practice Test: Chemical, Physical & Biological Treatment
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25 Questions

1. _________ process involves penetration of molecules to remove contaminants.
2. The air stripper is an example of a _________ contactor.
3. _____ process encapsulates contaminants in polyethylene.
4. Chemical precipitation is used in conjunction with neutralisation.
5. Which among the following is cheapest oxidizing reagent?
6. Which of the following solutions can be treated by reduction or oxidation process?
7. Complete the equation.
2Res+OH + [Ni(CN)4]2 → __________ + 2OH
8. Which of the following is possible from ion exchange treatment?
9. Solidification refers to changes in the ________ properties of hazardous waste.
10. The concentration of microorganisms in the digestion tank is measured as _________
11. Higher loading level increase BOD removal efficiency.
12. What is the minimum oxygen requirement to promote growth of aerobic bacteria?
13. The pressure drop in tower should be between _________ N/m2 per meter of tower height to prevent flooding.
14. The process of neutralizing waste as listed in WAC 173-303-090 is known as ____________
15. Evaporation units may be operated without obtaining a permit if ________
16. Which of the following aqueous waste can be subjected to stripping?
17. What is the organic loading rate in aerobic fixed culture systems?
18. Stabilisation refers to changes in the ________ properties of hazardous waste.
19. Suitable method for treating acidic or basic hazardous waste is _________
20. Height of packed stripping tower affects ________
21. Liquids with high vapour pressure evaporates slowly.
22. Which of the following is function of the MLSS content of the hazardous waste liquor?
23. Chemical precipitation makes the hazardous waste _________
24. The environmental issue caused by chemical precipitation is _________
25. Ion exchange is an irreversible process.