In waste water treatment, biological processes are employed to remove mainly
A. Bacteria
B. Suspended solids
C. Fungi
D. Colloidal
E. Soluble organic compound
Choose the correct answer from the options given below:

Correct option is B

Biological processes in wastewater treatment primarily target the removal of colloidal and soluble organic compounds. These processes involve the use of microorganisms to break down organic matter and other contaminants.
• D. Colloidal: Biological treatment helps in the reduction of colloidal particles as microorganisms consume the organic colloids.
• E. Soluble organic compounds: These are effectively removed by biological treatment as microorganisms break down these compounds into simpler substances.
Information Booster:
• A. Bacteria: Biological processes involve bacteria to treat wastewater but do not primarily aim to remove bacteria.
• B. Suspended solids: These are typically removed through physical processes like sedimentation and filtration rather than biological processes.
• C. Fungi: Similar to bacteria, fungi can be part of the biological process but are not the primary target for removal.