1st
International Conference on Rain Water Cistern Systems
Honolulu, Hawaii,
USA - June 1982
Section
1: History Of Cisterns
Page 1
Lessons of History in
the Design and Acceptance of Rain Water Cistern Systems
George
W. Reid
University of Oklahoma, USA
Introduction
Technology is the application of science to the resolution of a current problem.
There are several sub-classifications, such as intermediate technology, appropriate
technology, retrogressive technology. If one were to advocate the use of cisterns
today, it would be retrogressive technology because in early times-about 2000
B.C. - in the Middle East (Ancient and Medieval), typical middle class dwellings
stored rain water in cisterns; irrigation works were used as a domestic supply,
private bathing facilities for the wealthy, and sewage and solid wastes deposited
in streets and open spaces. During the 8th century, the Greeks (Olynthus) used
aqueducts of terra-cotta pipes; houses with bathrooms, cisterns, lavatories, and
a waste pipe running through the outside wall to the street; a central alley in
each block for drainage; and covered brick masonry drains.
Hippocrates advocated boiling water for disinfection and prevention of odors,
as did the Egyptians (47 B.C. Alexandria) where prominent families were provided
with cisterns.
Thus, one can envision technology being applied and perfected, as required
by one's environment. This leads to the conclusion that the technology used is
also a function of socioeconomic conditions. Historically, most development has
been associated with socioeconomic growth. The concepts of technological growth
are shown in Table 1 and that of life style in Table 2. A third variable would
be time (Table 3).
Now one might reflect on these ideas, first as one's life style shifts from
hunting and fishing, to agriculture, industry and to mass production. One progresses
(if that's the word) from rural to urban life, increased services, ultimately
70 to 80% urbanization, 70 to 75% service employment and 3 to 5% in agriculture;
and develops progressively, resource strains, pollution and scarcities. Water
requirements escalate from 1 to 2 litres/person/day to 8000 litres/person/day
because of large irrigation and industrial components. Water service increase
needs in the home from 7 to 8 litres to 400 to 500 litres/day. Eighty to 90% of
the water used is contaminated, and needs treatment before recycling can occur.
Thus, in successive order, water requires treatment, then is discharged as sewage,
and finally is a reuse product.
PDF of full document available to members (8pp, 240kb)
|
| Note: The IRCSA proceedings
section is still new and under active management, If you find any problems,
ommissions or corrections please contact
the administrator so we can put things right. |
|