Question

The methods used for biological treatment are
A.lagoon
B. activated sludge process
C. oxidation ditches
D. all of these

Answer 1

$\huge{Hello Friend}$

The answer of u r question is..✌️✌️

⭐️The methods used for biological treatment are⭐️

✔️✔️Option.B✔️✔️

>>The methods used for biological treatment activated sludge process<<

Thank you..⭐️⭐️⭐️⭐️