In this project, 50 branches of Pei-Kang River have been surveyed which includes dumped sites of solid waste and, in addition, land utility and pollution source along the river also be recorded and marked. Meanwhile, water quantity and quality of 45 sites have also been examined to evaluate pollution contribution for Pei-Kang River. The main results of this project as follows: (1) There are 14 branches appear unusual water color in 50 branches. The Hu-Shan-Liao drainage and the Fong-Shu-Hu-Nan creek may be polluted by industry waste water, the Hu-Wei drainage may be polluted by industry waste water, and water quality of other branches may be affected by livestock industry, respectively. (2) There are 32 sites at which solid waste were dumped. The most frequency sites are the Mei-Ling bridge and the Do-Shan bridge. There are 14 sites among those have been clear up at next month. (3) According to the results of pollution source tracing, sanitary sewage drains into the Pei-Kang River from 8 and 3 townships at Yunlin and Chiayi counties, respectively. (4) There are 116 plants which scatter along the Pei-Kang River and drain waste water into the river. Among those plants, there are 73 livestock plants (63%) and 43 industry plants (37%), respectively. The water quality of the Nan-Tz drainage is affected by livestock industry. (5) According to the results of land utility survey, including the Nan-Tz drainage, seven sites are suitable for utilizing to scheme out on-site treatment work. (6) The figure, picture, photograph, illustration, or sketch of the Pei-Kang basin have been established, which include water quality monitoring points, branches, drainages, and plants of EPA, WRA, and/or COA. (7) There are 45 water samples around the Pei-Kang River basin have been analyzed for 11 items of water quality and quantity. The water samples taken from 7 sites with high BOD concentration are the Nan-Tz drainage and etc. (8) The water samples taken from 7 sites content high ammonia concentration are the Yang-Zhu-Chang drainage and etc. (9) The San-Die-Xi drainage, the Dou-Liu-Dong-Xi drainage, and Shi-Liu-Dong-Xi drainage have greater water quantity. (10) Including the site at the Pei-Kang No.4 Gate, there are 5 sites have been selected to scheme out on-site treatment work in which includes six processes of Free Water Surface, Vegetated Submerged Bed, Gravel-Packed Treatment, Free Water Surface combined with Gravel-Packed Treatment, Soil Treatment System, and Grassed Waterway. (11) According to the evaluation of on-site treatment scheming at the Pei-Kang No.4 Gate site, the Free Water Surface combined with Gravel-Packed Treatment process is the best choice and the Gravel-Packed Treatment process is the second choice. (12) According to the evaluation of on-site treatment scheming at the Pi-Ma drainage site and Nan-Tz drainage, the Free Water Surface combined with Gravel-Packed Treatment process is the best choice for these two sites. However, variation of the data in detailed scheming is resulted from site area.

Livestock industry, Ammonia nitrogen, Biochemical oxygen demand