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bio filter | |||
aerofilter | |||
trickling filter; 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 supply | |||
biological filter; biofilter | |||
percolation filter; sprinkling filter |
Biofilter: 3 短语, 2 学科 |
建造 | 2 |
水暖 | 1 |