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Environmental Issues. — Bio Zoology STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12Bio ZoologyEnvironmental Issues.3 Marks
Question
Explain biological methods of waste water treatment.
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Answer

Biological methods of Wastewater treatment :
  1. Bioremediation of wastewater includes the aerobic treatment (oxidation ponds and aeration lagoons) and anaerobic treatment (anaerobic bioreactors and anaerobic lagoons).
  2. Phytoremediation of wastewater includes constructed wetlands, Root Zone Wastewater Treatment (RZWT), and Decentralized Waste Water Treatment System (DEWATS).

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