| basin tank sedimentation tanks aerial top view round polls wastewater treatment plant filtration dirty | ||||||||||||||||||||||||||||||||||||||||
| navigate by keyword : aeration bacterium basin biogas biological biology biomass biomassa circular clarifier conservation dirty ecology ecosystem effluent environment environmental excrement factory filter filtration industry organic pollution pool process processing purification recycled recycling reservoir sanitary sanitation sedimentation separation sewage sewerage sludge tank toxic waste wastewater | ||||||||||||||||||||||||||||||||||||||||
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| Biological purification of water sewage treatment plant waste water bubbles tank, activated sludge industrial wastewaters process using aeration biology floc composed protozoa bacteria, pollution | ||||||||||||||||||||||||||||||||||||||||
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