clarifier, activated sludge, flocculation, underdrain, upflow, filtration, outfall, sumps, effluent, influent, aeration, chlorination, filtrate, crossflow, leachate, solids, floc, denitrification, underflow, digestor, separators, recirculation, molecular sieve, trommel, wastewater, drainage, thickener, raffinate, subgrade, ultrafiltration, sewage, condensers, ozonation, soakaway, superheater, orthophosphate, valving, calcium oxide, macerator, sludges, reverse osmosis, lagoons, demineralization, chromic acid, pipework, cyclohexane, vacuum distillation, forebay, dialyzer, regenerator, activated carbon, hypochlorite, potassium permanganate, decantation, froth flotation, impellers, pearlite, scrubber, barium sulfate, supernatant, granulate, slurry, piping, permanganate, turbidity, aluminum sulfate, interfacial tension, granulation, inlet manifold, fluidized, adsorbent, dialysate, electrowinning, sewer, reticulation, demineralisation, downpipe, penstock, nitriding, grouting, chloramine, bicarbonates, splashback, electrodialysis, pumping station, coagulant, lamella, chlorides, carboy, cementation, gunite, microchannel, weirs, calcium hydroxide, leaching, dissolver, headrace, subbase, capillary tube, sedimentation, allyl alcohol, eluent, contactors, centrifuges, digesters, compressors, coolers, driers, evaporator, evaporators, exchangers, pumps, trays, collimators, conveyors, crushers, extractors, freezers, furnaces, gears