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. 2018 Oct 20;15(10):2311. doi: 10.3390/ijerph15102311

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© 2018 by the author.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Figure A1 — Values of indicators of the direct effects of WAS ultrasonic disintegration: (a) IDi_SCOD; (b) IDi_NTOT; (c) IDi_PTOT; (d) Idi/IDd_PROT; (e) IDd_CARBS; (f) IDi_CST. WAS_A—waste activated sludge after pretreatment in the WK-2010; WAS_B—waste activated sludge after pretreatment in the ultrasonic washer.