primary sedimentation basin tank water purification plant |
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| navigate by keyword : primary sedimentation basin tank water purification plant purity ecology treatment sewage waste equipment green circle round design wastewater separator background production factory industry vector view system circular facility concept nature pipeline utility station removal urban supply tap machine storage pipe effluent process filtration filter technology reservoir environment cleaning recycle liquid winter time |
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| Primary sedimentation basin tank. Water purification plant. Winter time. |
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