Sludge Pasturizing Plants and Equipment-Namely, Heat Exchangers, Steam Nozzles and Pasturizing Vessels; [Complete Sludge Drying Plants and Equipment-Namely, Rotating Dryer Drums and Air Heaters]; Activated Sludge Plants and Equipment-Namely, Swing Diffusers [and Surface Aerators]

'activ':29 'aerat':40 'air':27 'complet':15 'diffus':37 'dri':17 'drum':25 'dryer':24 'equip':6,21,34 'equipment-nam':5,20,33 'exchang':9 'heat':8 'heater':28 'name':7,22,35 'nozzl':11 'pastur':2,13 'plant':3,18,31 'rotat':23 'sludg':1,16,30 'steam':10 'surfac':39 'swing':36 'vessel':14

Machines for Use in Processing and Treating Sludge (and Digestor Gas Engines)

'digestor':10 'engin':12 'gas':11 'machin':1 'process':5 'sludg':8 'treat':7 'use':3

[Electrical Controls Used in Connection with Sludge Treatment Facilities-Namely, Controls for Temperature and Level Control and Interfacial Level Indication]

'connect':5 'control':2,12,17 'electr':1 'facil':10 'facilities-nam':9 'indic':21 'interfaci':19 'level':16,20 'name':11 'sludg':7 'temperatur':14 'treatment':8 'use':3

ROEDIGER

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