Conveying sewage to treatment works is the function of sewers known as________________?
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Answer: B. Out-fall sewer
Explanation
An outfall sewer serves as the final transport conduit delivering collected wastewater to treatment facilities. These large-diameter lines connect the municipal collection network directly to primary treatment plants. Outfall placement is carefully engineered to discharge treated effluent safely into natural water bodies. Wastewater collection networks feature hierarchical piping ranging from small building laters to huge mains. Outfall pipelines often span significant distances beyond urban centers to reach centralized treatment sites. Hydraulic capacity must accommodate peak municipal wastewater flows without causing upstream flooding.
Environmental regulators monitor outfall discharges closely to ensure compliance with water quality standards. Municipalities invest heavily in robust outfall infrastructure to protect local aquatic ecosystems. Proper outfall design prevents untreated sewage overflows into sensitive natural water environments. House sewers convey wastewater exclusively from individual buildings toward public street connections. Branch sewers collect wastewater from lateral lines within localized neighborhood drainage zones. Main sewers gather flows from multiple branch lines but do not serve as the final treatment delivery conduit.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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