这里以水溶性强的多环芳烃——萘为研究对象，得出了萘的挥发模型和好氧微生物对萘的吸附模型。并对取自污泥进行好氧培养和驯化，研究驯化后的好氧微生物对萘的降解动力学。进一步对驯化后的好氧微生物进行分离，得到能够高效降解萘的菌株，并对得到的纯菌体进行细胞固定化的研究。

Here, the highly water-soluble polycyclic aromatic hydrocarbon naphthalene is taken as the research object, and the volatilization model of naphthalene and the adsorption model of aerobic microorganisms on naphthalene have been obtained. And aerobic cultivation and domestication were conducted on sludge to study the degradation kinetics of naphthalene by domesticated aerobic microorganisms. Further isolation of domesticated aerobic microorganisms was carried out to obtain strains capable of efficiently degrading naphthalene, and cell immobilization of the obtained pure bacterial bodies was studied.

在本研究中，精萘厂家研究了萘在水中的挥发模型(无VSS存在)，结合试验数据和理论公式(Fick第一定律)得出水溶液中萘的传质系数k值为2.49×10-7m/s，而完全由经验公式计算出的k值为2.538×10-6m/s，通过比较得出所使用模型的有效性;进一步研究得出，当萘溶液中VSS浓度为500mg/L时，水溶液中萘的传质系数k值为2.18×10-7m/s。

In this study, the refined naphthalene manufacturer studied the volatilization model of naphthalene in water (without the presence of VSS), and combined experimental data and theoretical formula (Fick's first law), obtained a mass transfer coefficient k value of 2.49 for naphthalene in aqueous solution × 10-7m/s, while the k value calculated entirely from empirical formulas is 2.538 × 10-6m/s, the effectiveness of the model used is determined through comparison; Further research has shown that when the concentration of VSS in naphthalene solution is 500mg/L, the mass transfer coefficient k value of naphthalene in aqueous solution is 2.18 × 10-7m/s.

通过吸附试验可知，驯化后的好氧活性污泥对水溶性萘的吸附在10分钟即达到大吸附量，在60分钟时达到吸附-解吸平衡。驯化后的微生物对萘的吸附等温曲线符合langmuir吸附等温式，同时也符合Frendlich吸附等温式。

Through adsorption experiments, it can be seen that the domesticated aerobic activated sludge reaches a large adsorption capacity for water-soluble naphthalene in 10 minutes, and reaches an adsorption desorption equilibrium at 60 minutes. The adsorption isotherm curve of domesticated microorganisms for naphthalene follows the Langmuir adsorption isotherm equation and also conforms to the Frendlich adsorption isotherm equation.

进一步研究可知，在酸性条件下，活性污泥对萘的吸附量较大，且pH值的变化对吸附量的影响不大;当pH大于7时，活性污泥对萘的平衡吸附量随着pH值的升高迅速降低。驯化后的好氧微生物对萘的降解符合一级反应动力学。

Further research shows that under acidic conditions, activated sludge has a larger adsorption capacity for naphthalene, and the change in pH value has little effect on the adsorption capacity; When the pH is greater than 7, the equilibrium adsorption capacity of naphthalene by activated sludge rapidly decreases with the increase of pH value. The degradation of naphthalene by domesticated aerobic microorganisms follows a first-order reaction kinetics.

在VSS=100mg/L和VSS=200mg/L两种情况下，反应速率常数分别为:0.0824h-1和0.1302h-1。对驯化后的活性污泥中的微生物进行分离，得到两株细菌，革兰氏染色均呈阳性。

Under the conditions of VSS=100mg/L and VSS=200mg/L, the reaction Reaction rate constant are 0.0824h-1 and 0.1302h-1, respectively. Two strains of bacteria were isolated from the acclimated activated sludge and Gram stain was positive.

分别使用PVA-硼酸凝胶小球和PVA-硼酸-纱布复合载体两种方法对微生物细胞进行固定化的研究，按照它们对萘的降解速率由大到小的顺序排列:自由菌纱布固定化细胞凝胶小球固定化细胞。

Two methods, PVA boric acid gel beads and PVA boric acid gauze composite carrier, were used to immobilize microbial cells. According to their degradation rate of naphthalene, they were arranged from high to low: free bacteria gauze immobilized cells gel beads immobilized cells.

精萘的有关降解方法相关内容就讲解到这里了，希望能够给您好的帮助，更多事项就来我们网站http://www.jnjdbc.cn进行了解吧！

That's all for the relevant content on the degradation methods of refined naphthalene. I hope it can be helpful to you. For more information, please come to our website http://www.jnjdbc.cn Get to know!