CAJ | 학술논문

为探讨厌氧系统降解五氯酚(PCP)能力及PCP对厌氧系统的毒性影响,采用UASB反应器进行了PCP模拟污水连续流试验,考察了不同PCP浓度及负荷条件下系统对PCP和COD的降解去除规律,揭示了PCP对系统产酸相和产甲烷相影响状况.结果表明,在进水PCP含量从无到开始加入、PCP浓度提高以及PCP负荷提高3个冲击变化阶段,厌氧系统对PCP和COD的去除率均表现出先迅速降低后缓慢升高的变化趋势,运行稳定后PCP和COD的去除率分别达91.2%和83.5%以上.PCP对厌氧系统中微生物种群产生影响,使系统产酸菌由丁酸型菌群为主逐渐演替为丙酸型菌群为主,PCP对系统产甲烷菌活性产生明显抑制,甲烷产量由PCP加入前的12.1L/d降低至加入后的2.5L/d.
위탐토염양계통강해오록분(PCP)능력급PCP대염양계통적독성영향,채용UASB반응기진행료PCP모의오수련속류시험,고찰료불동PCP농도급부하조건하계통대PCP화COD적강해거제규률,게시료PCP대계통산산상화산갑완상영향상황.결과표명,재진수PCP함량종무도개시가입、PCP농도제고이급PCP부하제고3개충격변화계단,염양계통대PCP화COD적거제솔균표현출선신속강저후완만승고적변화추세,운행은정후PCP화COD적거제솔분별체91.2%화83.5%이상.PCP대염양계통중미생물충군산생영향,사계통산산균유정산형균군위주축점연체위병산형균군위주,PCP대계통산갑완균활성산생명현억제,갑완산량유PCP가입전적12.1L/d강저지가입후적2.5L/d.
Pentachlorophenol (PCP) is a common wood preservative that effects bacteria used to biodegrade sewage water. To investigate an aerobic biodegradation system's ability to degrade PCP and evaluate the toxic effects of PCP on the system, an experiment that simulated a continuous-flow of PCP contaminated sewage water was carried out using an upflow anaerobic sludge blanket (UASB) reactor. The study revealed that the degradation rates of PCP and chemical oxygen demand OR 1,5-Cyclooctadiene (COD) and the influence of PCP on the acidogenic phase and the methane production phase were a function of PCP concentrations and loads. The results indicated that during the three stages of PCP addition (PCP introduction, PCP concentration increase, and PCP load increase), the degradation rates of PCP and COD showed a trend of an initial quick drop followed by a slow rise. After the anaerobic degradation system stabilized, the degradation rates of PCP and COD reached 91.2% and 83.5%, respectively. PCP influenced the microorganic composition of the anaerobic system, gradually transforming the acidogenic bacteria from predominantly butyric acid bacteria to predominantly propionic acid bacteria. PCP also significantly inhibited the activity of methane producing bacteria. The volume of methane produced dropped from 12.1 L/d before the addition of PCP to 2.5 L/d afterwards.