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biological treatment
agric.	biologische Bekämpfung
environ.	biologische Reinigung; Biologische Behandlung
nat.res.	biologisches Verfahren
oil	biologische Behandlung
biological treatment Process that uses microorganisms to decompose organic wastes either into water, carbon dioxide, and simple inorganic substances, or into simpler organic substances, such as aldehydes and acids. The purpose of a biological treatment system is to control the environment for microorganisms so that their growth and activity are enhanced, and provide a means for maintaining high concentration of the microorganisms in contact with the wastes
environ.	Biologische Behandlung

biological treatment: 21 phrases in 4 subjects

Construction	1
Environment	13
General	2
Natural resourses and wildlife conservation	5