REDUCED ENERGY CONSUMPTION
IMAS energy consumption is greatly reduced due to no air scour requirement, no multi-Q recirculation pumping between the membranes and the biological process and a higher oxygen transfer efficiency MLSS concentration. With the ever increasing costs and environmental concerns associated with energy consumption, IMAS offers a realistic alternative for the production of ultrafiltration membrane quality effluent.
WASTEWATER PROCESS FLEXIBILITY
Nitrification is required when a wastewater effluent ammonia-nitrogen limit is specified. Nitrification is the biological oxidation of ammonia to nitrite (NO2) and then to nitrate (NO3). The microorganism responsible for this conversion are the autotrophic species Nitrosomonas and Nitrobacter
Denitrification is required when the wastewater effluent nitrate nitrogen or total nitrogen limit is specified. Nitrates are converted to nitrogen gas through denitrification which is achieved under anoxic (absence of free dissolved oxygen) conditions. Nitrate reducing bacteria are facultative heterotrophs.
Phosphorus can be removed biologically to levels of 1 - 3 mg/l without the addition of chemicals. If the discharge requirement is less than 1 mg/l, chemicals such as alum or ferric chloride can be added for co-precipitation.