Tuesday, April 2, 2013

They are sent to a toilet in a sewage treatment plant, via a network of wastewater (sewer or unitar


BED TREATMENT PLANT BACTERIAL
They are sent to a toilet in a sewage treatment plant, via a network of wastewater (sewer or unitary). According to criteria specific to common, you can find now several types of stations:
The sewage trickling. This is the oldest resort concept, little energy consumer, is back in favor in recent years. The principle is based on the aerobic biological treatment and the formation of a biofilm which is attached to supports (pozzolan or plastic disks) accommodating the effluent free of large particles.
by primary treatment: screening, de-oiling, sanding, use a decanter-digester. The biofilm formed is collected global water technologies at the outlet of the bacterial bed with the treated water. He is trapped by a secondary clarifier in the form of organic sludge composed of aerobic and anaerobic bacteria, leaving the treated water to reach the natural global water technologies environment. Wastewater is distributed over the top of the bed, in most cases, using a rotary distributor (sprinkler). global water technologies By-products are discharged from the station. The consequences of a malfunction of the treatment plant are: the departure global water technologies of the biofilm with the treated effluent into the river and clogging the bottom, a fall of the dissolved oxygen levels downstream of point of discharge into the receiving environment, a significant change in water quality, a significant presence of bacteria (coliforms and faecal streptococci) that are safe for swimming and food use of water.
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