Development of a biological process for livestock wastewater treatment using a technique for predominant outgrowth of Bacillus species

• DOI: 10.2166/wst.2002.0411
• Publication Date: 2018-05-18T13:15:12Z
• Authors: Y.S. Choi; S.W. Hong; S.J. Kim; I.H. Chung
• Keywords: Biochemical oxygen demand; Bacillus (shape)

The investigation has been carried out by treating 1 m3/day of livestock wastewater for 9 months. biological process is composed two reactors connected in series. Each reactor designed to stimulate the growth Bacillus sp., spore-forming aerobic or facultatively anaerobic bacteria. As a consequence, population sp. aptly increased via cycle sporulation, germination and proliferation. With predominant microbial activity comparing activated sludge based on result measuring specific oxygen uptake rate (SOUR). This was able remove nitrogen phosphorus as well organic matter efficiently. More than 98% biochemical demand (BOD) chemical (COD) were removed. In term removing total (T-N), about this reduced. On average, T-N concentration feed 3,270 mg/l but 74 effluent including 30 nitrite nitrate nitrogen. (T-P) reduction averaged 87.5%. result, it would be advantageous load order deal with high-strength wastewater.