Choi Y S, Hong S W, Kim S J, Chung I H
Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, 130-650, Korea.
Water Sci Technol. 2002;45(12):71-8.
The investigation has been carried out by treating 1 m3/day of livestock wastewater for 9 months. The biological process is composed of two reactors connected in series. Each reactor has been designed to stimulate the growth of Bacillus sp., spore-forming aerobic or facultatively anaerobic bacteria. As a consequence, the population of Bacillus sp. is aptly increased via the cycle of sporulation, germination and proliferation. With a predominant growth of Bacillus sp., the microbial activity has been increased comparing to activated sludge based on the result of measuring specific oxygen uptake rate (SOUR). This process was able to remove nitrogen and phosphorus as well as organic matter efficiently. More than 98% of biochemical oxygen demand (BOD) and chemical oxygen demand (COD) were removed. In term of removing the total nitrogen (T-N), about 98% of this was reduced. On average, the T-N concentration in the feed was 3,270 mg/l but 74 mg/l in the effluent including 30 mg/l of nitrite and nitrate nitrogen. The total phosphorus (T-P) reduction averaged 87.5%. As a result, it would be advantageous to load this process in order to deal with high-strength wastewater.
通过对每天1立方米的牲畜废水进行为期9个月的处理来开展此项研究。生物处理过程由两个串联的反应器组成。每个反应器的设计目的是促进芽孢杆菌属（形成芽孢的需氧或兼性厌氧细菌）的生长。因此，芽孢杆菌属的数量通过孢子形成、萌发和增殖的循环得以适当增加。基于特定氧摄取率（SOUR）的测量结果，随着芽孢杆菌属的大量生长，与活性污泥相比，微生物活性有所提高。该过程能够高效去除氮、磷以及有机物。生化需氧量（BOD）和化学需氧量（COD）的去除率超过98%。在总氮（T-N）去除方面，约98%的总氮被去除。进料中T-N的平均浓度为3270毫克/升，但出水中为74毫克/升，其中包括30毫克/升的亚硝酸盐和硝酸盐氮。总磷（T-P）的平均去除率为87.5%。因此，采用该工艺处理高强度废水将具有优势。
