sludge retention sump concrete tank divided partition two control galvanized metal ladders lead into the water rainwater |
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| navigate by keyword : architecture brick building cleaning concrete construction control deep design divided drainage extinguisher fire firefighter floor galvanized gas growing here horticulture industrial inside insurance ladder ladders large lead material metal new outdoor partition partitioning petrol plant pump purified railing rain rainwater rectangle refinery reservoir retention sedimentation sedimented sewage silo sludge splash sprinkler sprinklers station stone sump system tank treatment two urban wall water watering white |
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| Sludge, retention sump, concrete tank divided by a partition. two control galvanized metal ladders lead into the water. rainwater is purified and sedimented here. sewage and drainage water treatment |
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