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26 TiiE Health Bulletin secure wells that will furnish an adequate quantity of water for a town of any considerable size. PURIFICATIOX OF SURFACE WATERS Modern methods of water purification may seem to be a new idea but the methods of the present day are only an improvement on those used by the ancient Chinese, who, before the Christian era, practiced sedimentation assisted by the same chemicals that are still in common use. Further verification of the fact that water purification is an old subject is found in 2 Kings II, 19-21, "And the men of the city said unto Elisha, Behold, I pray thee, the situation of this city is pleasant^ as my lord seeth: but the water is naught, and the ground barren. And he said, Bring me a new cruse, and put salt therein. And they brought it to him. And he went forth unto the spring of the waters, and cast the salt in there, and said, Thus saith the Lord, I have healed these waters; there shall not be from thence any more death or barren land." The reference in this passage to the removal of impurities by means of harmless salts, in close accord with modern practice, seems capable of but one interpretation. The common methods of water purification for domestic purposes are: 1. Sedimentation and sterilization. r (a) Slow sand filters. 2. Filtration 4 (b) Rapid sand, or mechani-ical filters. 3. Sterilization alone. The procedure which is most depended upon in North Carolina is filtration by the mechanical process, Fig. 20. Clear water Showing coagulation. During subsidence. An illustration, showing the appearance of water at three successive stages of coagulation. Note in the second instance the similarity of appearance of settling flakes of coagulant to falling snow flakes.
Object Description
Rating | |
Fixed Title * | NCHH-04: The Health Bulletin [1914-1973] |
Document Title | The Health Bulletin [1914-1973] |
Subject Topical | Public health -- North Carolina -- Periodicals. |
Subject Topical Other | Public Health -- North Carolina -- Periodicals. |
Contributor | North Carolina. State Board of Health. |
Publisher | Raleigh, North Carolina State Board of Health. |
Repository | University of North Carolina at Chapel Hill. Health Sciences Library. |
Host | University of North Carolina at Chapel Hill |
Date | 1920 |
Identifier | NCHH-04-035 |
Form General | Periodicals |
Language | English |
Rights | This item is part of the North Carolina History of Health Digital Collection. Some materials in the Collection are protected by U.S. copyright law. This item is presented by the Health Sciences Library of the University of North Carolina at Chapel Hill for research and educational purposes. It may not be republished or distributed without permission of the Health Sciences Library. |
Digital Collection | North Carolina History of Health Digital Collection |
Sponsor | The North Carolina History of Health Digital Collection is an open access publishing initiative of the Health Sciences Library of the University of North Carolina at Chapel Hill. Financial support for the initiative was provided in part by a multi-year NC ECHO (Exploring Cultural Heritage Online) digitization grant, awarded by the State Library of North Carolina, and funded through the Library Services and Technology Act (LSTA). |
Volume Number | 35 |
Health Discipline | Public Health |
Digital Format | JPEG 2000 |
Print / Download PDF Version | http://archives.hsl.unc.edu/nchh/nchh-04/nchh-04-035.pdf |
Document Sort | all; group-b; nchh-04 |
Volume Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/identi/searchterm/NCHH-04-035 |
Title Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/documa/searchterm/NCHH-04 |
Catalog Record link | http://search.lib.unc.edu/search?R=UNCb1296443 |
Revision History | done |
Description
Fixed Title * | Page 26 (images) |
Document Title | The Health Bulletin [1914-1973] |
Subject Topical | Public health -- North Carolina -- Periodicals. |
Subject Topical Other | Public Health -- North Carolina -- Periodicals. |
Contributor | North Carolina. State Board of Health. |
Publisher | Raleigh, North Carolina State Board of Health. |
Repository | University of North Carolina at Chapel Hill. Health Sciences Library. |
Host | University of North Carolina at Chapel Hill |
Date | 1920 |
Identifier | NCHH-04-035-0204 |
Form General | Periodicals |
Page Type | all; all images; photo; all images; chart/table; report/review |
Language | English |
Rights | This item is part of the North Carolina History of Health Digital Collection. Some materials in the Collection are protected by U.S. copyright law. This item is presented by the Health Sciences Library of the University of North Carolina at Chapel Hill for research and educational purposes. It may not be republished or distributed without permission of the Health Sciences Library. |
Filename | healthbulletinse35nort_0204.jp2 |
Digital Collection | North Carolina History of Health Digital Collection |
Sponsor | The North Carolina History of Health Digital Collection is an open access publishing initiative of the Health Sciences Library of the University of North Carolina at Chapel Hill. Financial support for the initiative was provided in part by a multi-year NC ECHO (Exploring Cultural Heritage Online) digitization grant, awarded by the State Library of North Carolina, and funded through the Library Services and Technology Act (LSTA). |
Volume Number | 35 |
Issue Number | 8 |
Page Number | 26 |
Health Discipline | Public Health |
Full Text | 26 TiiE Health Bulletin secure wells that will furnish an adequate quantity of water for a town of any considerable size. PURIFICATIOX OF SURFACE WATERS Modern methods of water purification may seem to be a new idea but the methods of the present day are only an improvement on those used by the ancient Chinese, who, before the Christian era, practiced sedimentation assisted by the same chemicals that are still in common use. Further verification of the fact that water purification is an old subject is found in 2 Kings II, 19-21, "And the men of the city said unto Elisha, Behold, I pray thee, the situation of this city is pleasant^ as my lord seeth: but the water is naught, and the ground barren. And he said, Bring me a new cruse, and put salt therein. And they brought it to him. And he went forth unto the spring of the waters, and cast the salt in there, and said, Thus saith the Lord, I have healed these waters; there shall not be from thence any more death or barren land." The reference in this passage to the removal of impurities by means of harmless salts, in close accord with modern practice, seems capable of but one interpretation. The common methods of water purification for domestic purposes are: 1. Sedimentation and sterilization. r (a) Slow sand filters. 2. Filtration 4 (b) Rapid sand, or mechani-ical filters. 3. Sterilization alone. The procedure which is most depended upon in North Carolina is filtration by the mechanical process, Fig. 20. Clear water Showing coagulation. During subsidence. An illustration, showing the appearance of water at three successive stages of coagulation. Note in the second instance the similarity of appearance of settling flakes of coagulant to falling snow flakes. |
Digital Format | JPEG 2000 |
Print / Download PDF Version | http://archives.hsl.unc.edu/nchh/nchh-04/nchh-04-035.pdf |
Document Sort | all; group-b; nchh-04 |
Volume Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/identi/searchterm/NCHH-04-035 |
Title Link | http://dc.lib.unc.edu/cdm/search/collection/nchh/field/documa/searchterm/NCHH-04 |
Catalog Record link | http://search.lib.unc.edu/search?R=UNCb1296443 |
Revision History | done |
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