2FBM598–biogas generator in water treatment facilities plant. Gas process from sludge
0:11
2KYHAM1–Discharge of waste water into segment clarifier biological activated sludge
0:19
2FP458H–Special equipment used generate bio gas from sludge left after water treatment
0:07
2KYHAK3–Biological purification of water sewage treatment plant waste, activated sludge
0:23
2W6D77R–Environmental pollution. Dirty water flows from the pipe into a natural pond. Sewage, treatment facilities, dirty foam, bacteria.
0:16
2W4KTW4–Thick sludge mixture in channel of wastewater treatment plant. Tanks for aeration and biological purification of sewage waste water. Activated sludge
0:30
2TK0JG8–Biological purification of water sewage treatment plant waste water bubbles in the tank, activated sludge industrial wastewaters process using
0:27
2W4PWD2–Weed plant grows on thick foam in sewage channel. Sewage chanel under city with sludge digestion biogas technology.
0:36
2W06566–Biological purification of water sewage treatment plant waste water bubbles in the tank, clarifier activated sludge industrial wastewaters process
0:22
2FH12KJ–1970s: United States: microscopic bacteria. Sludge worms under microscope.
0:22
2TW59AG–Biological purification of water sewage treatment plant waste water bubbles in the tank, clarifier activated sludge industrial wastewaters process
0:17
2FH12J9–1970s: United States: bacteria breaks down organic matter under microscope.
0:24
2TXGHGW–Biological purification of water sewage treatment plant waste water bubbles in the tank, clarifier activated sludge industrial wastewaters process
0:20
2G5978D–'1970s: United States: close up of bacteria in effluent. Water flows from'