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This post was last edited by hesonchang214 on 2020-5-7 08:45. Regarding the quality of reclaimed water, which of the following statements is in line with the standards specified in \"Quality Standards for Urban Wastewater Reuse in Non-potable Purposes\"? A. Compared with reclaimed water used for flushing toilets, the requirements regarding turbidity for reclaimed water used in firefighting are the same. B. For reclaimed water used in firefighting and road cleaning, the total dissolved solids should be ≤1000 mg/L. C. Compared with other uses, reclaimed water used for vehicle washing has stricter requirements regarding anionic surfactants. D. Reclaimed water that meets these water quality standards can be used in construction work, including as water for mixing concrete. Answer: C. Option A does not meet the requirements of the current standards for the quality of reclaimed water used for various urban purposes. The standard specifies that when reclaimed water is used for firefighting, its turbidity should be ≤10 NTU ； When used for flushing toilets, the turbidity should be ≤5NTU. Option B does not meet the requirements of \"Quality Standards for Urban Wastewater Reused as Non-potable Water in Cities.\" The standard specifies that when reclaimed water is used for firefighting and road cleaning, the total dissolved solids should be ≤1500 mg/L. Option D does not meet the requirements of the current \"Quality Standards for Urban Wastewater Reused as Non-potable Water in Cities.\" The standard stipulates that reclaimed water used as mixing water for concrete must not only meet the requirements of the current \"Quality Standards for Urban Wastewater Reused as Non-potable Water in Cities\" but also comply with the relevant provisions of JGJ63. Option C meets the requirements of the current standard for the quality of water used for miscellaneous urban purposes in urban sewage reuse. The standard specifies that when reclaimed water is used for vehicle washing, the level of anionic surfactants should be ≤0.5 mg/L ； When used for other purposes, anionic surfactants should be ≤1.0 mg/L