Water purification installations for removal of organic pollutants, nitrogen, phosphorous, and coliform bacteria and other microorganisms from residential, municipal, and industrial wastewater, using a combination of suspended biological growth and fixed film biological growth in the installation

'bacteria':13 'biolog':28,33 'coliform':12 'combin':25 'film':32 'fix':31 'growth':29,34 'industri':21 'instal':3,37 'microorgan':16 'municip':19 'nitrogen':9 'organ':7 'phosphor':10 'pollut':8 'purif':2 'remov':5 'residenti':18 'suspend':27 'use':23 'wastewat':22 'water':1

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