Lime (calcium hydroxide) is an economical alternative for neutralization of acids in wastewater streams
Lime (calcium hydroxide) is an economical alternative for neutralization of acids in wastewater streams. It is available as a powder or slurried in water.
This table lists the approximate cost of using lime relative to that for other popular alkaline neutralizing agents:
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carbonate (soda ash)
hydroxide (caustic soda)
Despite its low cost, the use of lime is often avoided because its successful application presents greater engineering challenges.
ERI offers a bulletin discussing the engineering considerations when using lime to neutralize wastewater.
Engineering Resource, Inc., 19 Edgehill Road, Winchester, MA 01890. Tel: 781-938-1074; Fax: 781-938-1075.