Improvement for Domestic Wastewater Treatment of the Country Houses in Taiwan －A Case Study of Reed Bed Treatment System－
Date Issued
2004
Date
2004
Author(s)
Chen, Chiang-Ho
DOI
zh-TW
Abstract
Abstract
Domestic wastewater has now become the major source of the river pollution in Taiwan, causing the destruction of human habitable environment and the destroying of ecosystem. The main reason for such a phenomenon is that most domestic wastewater is discharged without any proper treatment, and a well-developed sewerage system is the best solution to this problem. The Taiwan government has already set up the sewerage system development project as one of its most important national construction projects. But the costruction of sewerage system is aimed at the more populated urban areas. For the less populated rural areas, there is currently no appropriate strategy.
The problem of the domestic wastewater treatment of the country houses in Taiwan is not only the bad wastewater treatment system plan, but also the inefficient facility and lack of maintenance. However, since the development of an integrated sewage system requires a huge amount of fund and is related to the established land policy, it is too hard to achieve in the nearby future. The best solution at this stage, we believe, is to improve the quality of the effluent.
In this paper, we introduce a wastewater treatment technique, the reed bed treatment system, which uses the constructed wetland. This treatment system is developed in Europe and has become popular in recent years. It is a natural wastewater treatment technique, and is proved to be stable, low-cost, energy-saving, and environmental friendly. However, since this technique is developed in Europe, it may be specialized to the European environment, climate, plants, and societies. In order to test whether the rural areas in Taiwan can also adapt the reed bed treatment system, we will examine it with a case study in addition to our discussion of the theory.
Our study has shown that the average removal rate of suspended solid matter is about 84.65%, ammonia nitrogen is 65.68%, orthophosphate is 54.11%, biochemical oxygen demand is 69.82%, the effluent reaches the “Effluent standards” and the “Irrigation water quality standards”. We also find that the total cost of the reed bed treatment system for a five-to-six-people household is about forty thousand to sixty-five thousand NT dollars. There are no technique obstacles for developing this system. Besides, the reed bed treatment system has many additional benefits such as the re-usage of water resource, the improvement of habitation of wild animals, entertainment, and eco-education.
Subjects
蘆葦床處理系統
自然處理
人工溼地
污水處理設施
生活污水
Constructed wetlands
Reed bed treatment system
Nature treatment
Domestic wastewater
Wastewater treatment ficilities
Type
thesis
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