The treatment of this type of water requires suitable processes since they have lower costs than industrial waste water but, on the other hand, these effluents have a high nitrogen content.
By Aguambiente based in La Cistérniga, SPAIN.
Wastewater Deodorization: The formation of hydrogen sulfide often poses a problem for municipal wastewater treatment. Chlorine dioxide, a powerful oxidant, can be effectively used to control noxious, irritating, or pungent odors from many operations. Moreover, its unique selective properties permit more efficient application at a lower dosage and cost than chorine, hypochlorite, permanganate peroxide or ozone.
By DuPont Chlorine Dioxide based in North Kingstown,, RHODE ISLAND (USA).
Problem: A significant portion of the operational costs of a conventional municipal wastewater treatment plant employing an aerobic biological treatment unit comes from electricity costs associated with aeration. In many cases, the aeration rates are kept at the maximum level to ensure that the plant’s effluent is in compliance with the regulations. The critical parameter for regulatory purposes and treatment efficiency, BOD, takes 5 days to measure through standard methods providing almost no value to the plant operators in terms of adjusting aeration rates and chemical dosing.
By Real Tech Inc. based in Whitby, ONTARIO (CANADA).
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