養豬廢水因富含高濃度的有機物與氨氮，對水中生物具有毒性，為國內主要水污染來源之一，直接排放會造成河川水質遭受污染。本研究探討以光合紫色非硫細菌(PNS，由食品工業發展研究所提供)處理養豬廢水之功效，利用添加不同比例的複合菌液探討處理過程中養豬廢水之化學性質及營養鹽的變化，試驗過程中測定廢水之pH值、EC值、TOC、NO3-、SO42-、PO43-、NH4+及OD864nm。再者，藉由外加不同營養鹽(包括：碳源及氮源)探討對養豬廢水之生物處理功效的影響，測試之外加碳源，包括：葡萄糖、蔗糖和果寡糖；外加氮源則包括：硝酸鉀、氯化銨、酵母抽提物，比較各處理之廢水處理成效，以做為未來養豬廢水實場生物處理應用之參考。
添加PNS菌液可略為提高廢水pH值(p<0.05)；高PNS菌液添加比例(20%)可於培養至第9天時去除水中28.48%的總有機碳；且於廢水處理前期，因微生物大量生長而明顯降低水中氨氮和硫酸鹽之含量(p<0.05)，外加碳源及氮源皆無法提高廢水之TOC去除率；而外加碳源對廢水中硝酸鹽之去除亦有一定功效。外加碳源及氮源皆可提高廢水之硫酸鹽去除率。 Swine wastewater contains a large amount of organic matter and a high concentration of ammonia, which is toxic to the aquatic organisms, is one of the main water pollution in Taiwan. Direct discharge will pollute river and lake quality. In this study, the efficiency of swine wastewater treatment by photosynthetic purple non-sulfur bacteria (PNS, obtained from Food Industry Development Institute) was investigated. The changes of chemical properties and nutrient salt durin the treatment of swine wastewater by supplement of different proportions of PNS culture. The changes of pH, EC value, TOC, NO3-, SO42-, PO43-, NH4+ and OD864nm of wastewater were determined during the test. Furthermore, effects of additional nutrient (carbon and nitrgen) on the efficiency of swine wastewater by PNS were also discussed. Comparasion of efficiency of swine wastewater treatment by addition of carbon sources (including glucose, sucrose and fructooligosaccharides) or nitrogen source (including potassium nitrate, ammonium chloride, yeast extract) could provide a reference for the biological treatment of swine wastewater.
Inoculation of PNS culture could slightly increase the pH value of swine wastewater(p<0.05); the high proportion (20%) of PNS culture could also remove 28.48% of TOC until the 9th day of culture. In the early stage of wastewater treatment, the content of ammonia-N and sulfate in wastewater were significantly reduced due to the growth of microorganisms(p<0.05). Addition of carbon source and nitrogen source could not increase the TOC removal rate of wastewater; and the addition of carbon source also had a certain effect on the removal of nitrate in wastewater. Furthermore, addition of carbon source and nitrogen source could increase the sulfate removal rate of wastewater
