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(Khác biệt giữa các bản)(4) Sludge production. The lime-soda ash soften- ing process produces chemical sludge composed princi- pally of calcium carbonate and magnesium hydroxide. As withdrawn from sedimentation basins equipped for mechanical sludge removal, the proportion of )(Nhờ giải nghĩa chưa được trả lời)
Dòng 14: Dòng 14: mass balance which takes into consideration the sus-mass balance which takes into consideration the sus-pended solids in the raw water, ==pended solids in the raw water, ==+ [[Thể_loại:Nhờ giải nghĩa đã trả lời]]Hiện nay
== 4) Sludge production. The lime-soda ash soften- ing process produces chemical sludge composed princi- pally of calcium carbonate and magnesium hydroxide. As withdrawn from sedimentation basins equipped for mechanical sludge removal, the proportion of dry sol- ids in the sludge will generally fall within the range of 2 to 10 percent. The weight of dry solids produced by softening reactions will average approximately 2.5 times the weight of commercial quicklime used. For hydrated lime, softening solids produced will be rough- ly twice the weight of commercial hydrated lime em- ployed. Fairly accurate values of total solids produc- tion at an operating plant can be developed utilizing a mass balance which takes into consideration the sus- pended solids in the raw water, ==
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