Record Display for the EPA National Library Catalog
RECORD NUMBER: 36 OF 160
|OLS Field Name||OLS Field Data|
|Main Title||Color removal and sludge disposal process for kraft mill effluents,|
|Author||Spruill, Edgar L.|
|CORP Author||Continental Can Co., Inc., Hodge, La. Mill Operations Div.;Enviromental Protection Agency, Washington, D.C. Office of Research and Development.;Office of Water Resources Research, Washington, D.C.|
|Publisher||For sale by the Supt. of Docs., U.S. Govt. Print. Off.,|
|Report Number||EPA-660/2-74-008; EPA-12040-DRY; W74-11803|
|Stock Number||PB-235 573|
|Subjects||Wood-pulp industry--Waste disposal. ; Paper industry--Waste disposal. ; Sewage--Purification. ; Lime. ; Paper-making and trade--Waste disposal|
|Additional Subjects||Industrial waste treatment ; Sulfate pulping ; Colors ; Sludge disposal ; Precipitation(Chemistry) ; Cost estimates ; Clarification ; Calcium oxides ; Centrifuging ; Materials recovery ; Process charting ; Paper industry ; Pilot plants ; Water pollution control|
|Collation||vii, 124 pages illustrations 27 cm.|
A treatment plant, removing color by lime addition and recovering sludges, has been treating over 80% of the effluent of an unbleached kraft mill for one year. Using up to 1,100 mg/l of CaO, with normal mill fiber loss as a precipitation aid, average color reduction was 80% for all-kraft effluent. The chief negative factor is need for emergency protection against alkaline impact on secondary treatment and receiving stream. Following centrifuge dewatering, sludge incineration has had minimal impact on kiln operation; there were some adverse effects on lime quality. Lime recovery was 93%. Mill kiln capacity must be increased about 25%. Primary clarification and sludge disposal are included in the process. Costs are estimated. (Modified author abstract)
"Project 12040 DRY; Program element 1B2037." Includes bibliographical references (pages 83-84).
Conclusions; Recommendations; Introduction; Developing a plant design; Equipment performance and changes; Process performance; Economic considerations; Acknowledgements; References; Glossary ; Appendices.