In the process of pursuing economic growth as the national target for
a long time, Taiwan has created an economic miracle but sacrificed
ecological environmental sources. With increasing higher living standards,
more living space is demanded such that providing clean and green
spaces along riverbanks in addition to offering security becomes another
important mission. In recent years, the global thinking of sustainable
development has demanded more ecological and environmental
protection such that efficient management of waters along river, drainage
and seacoast will be emphasized tasks of watershed management.
The main objective of pollution investigation and quantity
estimation in Chiang-Chun River watershed is to effectively comprehend
the sources of pollution to assist in establishing the water quality model to
be used in simulation. The QUAL2E model developed by the US EPA is
used to carried out estimating the carrying capacity of Chiang-Chun River,
and drafting pollution control measures and waste reduction strategies so
that the objective of improving Chiang-Chun River¡¦s water quality can be
achieved. Chiang-Chun River has long been subjected to pollutions from
industrial and domestic waste discharges resulting in serious water quality
deterioration. Additionally the waste discharge from manufacturing plants
along the creek has made the pollution even worse. Hence, various
environmental protection authorities have actively promoted the checking
and controlling industrial and pig-farming wastewater discharges and
established a mechanism encouraging local residents to participate in the
watershed pollution prevention and control. These measures will not only
alleviate the water pollution in Chiang-Chun River with limited resources
but also achieve the purpose of communing local residents and the river.
V
The livestock wastewater is currently treated in three-stage system
including solid-liquid separation, anaerobic treatment and aerobic
treatment. With good management, the effluent is expected to meet
discharge standards. However, since most pig farmers, who may try to
save costs, have not efficiently managed the treatment facility so that the
treated effluent does not meet the standards. If directly discharged into
surface bodies, the improperly treated effluent will cause serious
pollution problems. A natural treatment and water purification system is
currently being promoted. If implemented in the three-stage treatment
system, the natural system (aquatic treatment system) will achieve energy
savings, lower the difficulty to operate the treatment system and reduce
the operation and maintenance costs. Additionally, effluent quality can be
improved such that the possibility of water reuse is also expected.
Providing adequate treatment for domestic wastewater requires the
construction of sewage system, which is costly and may take a long time
to complete. Additionally, since most residents are scattered in the
watershed, the construction of conventional sewage system to collect
domestic wastewater is not cost-effective. Hence, the natural system, e.g.
constructed wetland, is proposed as the major method for treating the
wastewater discharged from communities and for achieving water reuse
such that multiple-functional benefits can be reached. Additionally, the
concept and tasks of water pollution prevention and control can be deeply
rooted in the community development so that a community possessing the
capability of water self-purification and sustainable application is
developed.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0805105-183414 |
| Date | 05 August 2005 |
| Creators | Lee, Mu-Sheng |
| Contributors | C. M. Kao, none, K.S.Chen |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0805105-183414 |
| Rights | restricted, Copyright information available at source archive |
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