Part VII. 



cement industry 

 (SIC 3241) 



TABLE V-22. Quality Characteristics of Surface 



Waters That Have Been Used by the Hydraulic 



Cement Industry (SIC 3241) 



[Unless otherwise indicated, units are mg/l and values are 



maximums. No one water will have all the maximum values 



shown.] 



1 Zero, not detectable by test. 



- Accepted as received (if meeting total solids or other 

 linniting values); has never been a problem at concentrations 

 encountered. 



NOTE. — Concentrations are based on limited data. Applica- 

 tion of the above values should be based on Part 23. ASTM 

 book of standards (1) or APHA Standard methods for the 

 examination of water and w/aste»/ater (5). 



About 58 percent of current cement manufac- 

 ture is by the wet process requiring an estimated 

 16bgy (1966). 



Quality requirements for process water in the 

 cement manufacturing industry are not rigorous, 

 although they are somewhat more restrictive than 

 those of mixing water for concrete. Surface and 

 ground waters and public water supplies are used. 

 Treatment is usually not required. 



A listing of the quality of surface waters that 

 have been used is presented in table V-22. Quality 

 requirements for water at point of use for the 

 hydraulic cement industry are indicated in table 

 V-23. 



TABLE V-23. Quality Requirements of Water at 



Point of Use for the Hydraulic Cement Industry 



(SIC 3241) 



[Unless otherwise indicated, units are mg/l and values are 



maximums. No one water will have all the maximum values 



shown. Quality of water prior to addition of substances used 



for internal conditioning.] 



1 Zero, not detectable by test. 



-Accepted as received (if meeting total solids or other 

 limiting values); has never been a problem at concentrations 

 encountered. 



NOTE. — Concentrations are based on limited data. Applica- 

 tion of the above values should be based on Part 23, ASTM 

 book of standards (1) or APHA Standard methods for the 

 examination of water and wastewater (5). 



214 



