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Terms for subject Environment containing trickling filter | all forms | exact matches only | in specified order only
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trickling filter A system of secondary sewage treatment which is similar to self-purification action of streams; it is more accurately a biological oxidizing bed; the effluent is placed on the stones in the bed and microorganisms present consume the solids as a food supplyBiofilter
trickling filterBiofilter
trickling filter plantTropfkörperanlage
trickling filter plantTropffilteranlage