primary sedimentation basin sewage flowing through large tanks |
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| navigate by keyword : black building circular cleaner conservation ecology ecosystem effluent environment environmental factory filter filtration fittings flow industrial industry plant pollution pump purification purity recycling removal reservoir sanitary sanitation sedimentation separator sewage sewer sludge storage store system tank treatment turbidity utility valve waste wastewater water |
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| Sewage treatment plant. Primary sedimentation basin, sewage flowing through large tanks |
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