Wastewater treatment and purification units, namely, systems for the treatment and purification of waste water and effluent liquids comprised primarily of fixed film and suspended media aerobic treatment units, trash or septic or primary tanks, filter beds, clarifiers, blowers, electrical panels, instrumentation, pipes and structural parts therefor, all for single house or cluster or community or commercial or municipal or industrial wastewater or effluent liquid treatment use only

'aerob':27 'bed':37 'blower':39 'clarifi':38 'cluster':53 'commerci':57 'communiti':55 'compris':19 'effluent':17,64 'electr':40 'film':23 'filter':36 'fix':22 'hous':51 'industri':61 'instrument':42 'liquid':18,65 'media':26 'municip':59 'name':6 'panel':41 'part':46 'pipe':43 'primari':34 'primarili':20 'purif':4,12 'septic':32 'singl':50 'structur':45 'suspend':25 'system':7 'tank':35 'therefor':47 'trash':30 'treatment':2,10,28,66 'unit':5,29 'use':67 'wast':14 'wastewat':1,62 'water':15

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