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农村污水处理菌剂的复配及其对污染物的去除效果
发表时间：2023-09-27 浏览量：348 下载量：57
| 全部作者： | 鲍俊安，刘林鑫，王可，唐健康，黄世坤，黄磊 |
| 作者单位： | 西南大学三峡库区生态环境教育部重点实验室，西南大学资源环境学院；农村清洁工程重庆市工程研究中心 |
| 摘 要： | 通过在污水生物处理过程中投加复合菌剂，可以借助微生物协同作用，改善化学需氧量（chemical oxygen demand，COD）、总氮（total nitrogen，TN）和氨氮（NH4+-N）处理效果。由于该方法具有成本低、安全可靠、简单可行等特点，在农村地区正广泛受到关注。选用6种功能菌种，基于正交试验设计9种复合菌剂（命名为A-1、A-2、A-3、B-1、B-2、B-3、C-1、C-2和C-3），优选复配比例和曝气条件。结果显示，实验组对污染物去除效果优于对照组，且总体上随着曝气时间的延长，污染物去除率逐渐升高。经24 h处理，C-3（恶臭假单胞菌：枯草芽孢杆菌:地衣芽孢杆菌:解淀粉芽孢杆菌:中间苍白杆菌:甲基营养型芽孢杆菌 = 3:1.5:1.5:1:1:0.5）对COD、TN和NH4+-N的去除率最高，分别为39%、13%和46%；在120 h后，污染物最大去除率分别达56%、32%和53%。综合考虑技术和经济两方面因素，在接种浓度2.3×104 cfu/mL时，C-3为最佳复合菌剂，曝气条件为“曝气1 h停止1 h”。 |
| 关 键 词： | 环境工程学；复合菌剂；正交试验；农村污水；污染物；去除效果 |
| Title： | Compound of bacteria agent for rural sewage treatment and its removal effect on pollutants |
| Author： | BAO Jun'an, LIU Linxin, WANG Ke, TANG Jiankang, HUANG Shikun, HUANG Lei |
| Organization： | Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment (Ministry of Education), College of Resources and Environment, Southwest University; Chongqing Engineering Research Center of Rural Cleaning |
| Abstract： | Though adding compound bacterial agent to the biological treatment of sewage, the removal effects of chemical oxygen demand (COD), total nitrogen (TN), and ammonia nitrogen (NH4+-N) could be improved by the synergistic effect of microorganisms. With the characteristics of low-cost, safe and reliable, simple and feasible, this treatment method is attracting a lot of attention in rural area. Six strains with special functions were selected to design 9 compound bacteria agents (named A-1, A-2, A-3, B-1, B-2, B-3, C-1, C-2, and C-3) based on orthogonal experiment, and the combination ratio and aeration condition were optimized, respectively. Results showed that the pollutant removal in the experimental group was better than that of the control and generally increased with the increasing proportion of aeration time. At 24 h, the removal rates of COD, TN and NH4+-N for C-3 (Pseudomonas putida : Bacillus subtilis : Bacillus licheniformis : Bacillus amyloliquefaciens : Ochrobactrum intermedium : Bacillus methylotrophicus = 3:1.5:1.5:1:1:0.5) were the highest among all compound bacteria agents, which were 39%, 13% and 46%, respectively, while the maximum removal rates of above pollutants could reach 56%, 32% and 53% after 120 h. Considering both technical and economic factors, C-3 is selected as the best compound bacterial agent. The inoculation concentration is 2.3×104 cfu/mL, and the aeration condition is set with aeration 1 h and non-aeration 1 h. |
| Key words： | environmental engineering; compound bacteria agent; orthogonal experiment; rural sewage; pollutants; removal effects |
| 发表期数： | 2023年9月第3期 |
| 引用格式： | 鲍俊安，刘林鑫，王可，等. 农村污水处理菌剂的复配及其对污染物的去除效果[J]. 中国科技论文在线精品论文，2023，16（3）：418-426. |
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