采用菌丝生长速率抑制法测定了北京、山东、江西等7个地区31株灰霉菌株和1株实验室标准菌株(BO5.10)对腐霉利的毒力。结果表明,32个供试灰霉菌株中,8个菌株对腐霉利属中等抗性,20个菌株属于低等抗性,4个菌株为敏感菌株。进一步测定了...采用菌丝生长速率抑制法测定了北京、山东、江西等7个地区31株灰霉菌株和1株实验室标准菌株(BO5.10)对腐霉利的毒力。结果表明,32个供试灰霉菌株中,8个菌株对腐霉利属中等抗性,20个菌株属于低等抗性,4个菌株为敏感菌株。进一步测定了个别抗性菌株与敏感菌株的高盐渗透压、甘油含量以及电导率之间的差异。供试抗性及敏感菌株在1.25~10 g/L Na Cl浓度范围内可刺激菌落生长,超过此浓度界线抑制菌落生长,且对抗性菌株抑制率大于敏感菌株。抗腐霉利菌株甘油含量和电导率均高于敏感菌株。以上结果为灰霉病的抗性治理提供了理论依据。展开更多
[ Objective ] The study aimed to discuss the optimal conditions for the treatment of enzymolysis wastewater by centrifugation - coagu- lation - Fenton reagent oxidation - adsorption process. [ Metbod] According to the...[ Objective ] The study aimed to discuss the optimal conditions for the treatment of enzymolysis wastewater by centrifugation - coagu- lation - Fenton reagent oxidation - adsorption process. [ Metbod] According to the water-quality characteristics of wastewater from a heparin so- dium production factory of Jiangsu Province, enzymolysis wastewater was segregated from intestinal lavage wastewater and treated through cen- trifugation- coagulation- Fenton reagent oxidation-adsorption process, and the optimal technical parameters were determined. E Resultl After enzymolysis wastewater was centrifuged at a speed of 4 000 rpm, 0.6 g/L CTS as the coagulant was added to the supematant. Hereafter, pH of the coagulated effluent was adjusted to 3, and then 1.5% (V/V) H2O2 was added to the coagulated effluent; a certain amount of ferrous sul- fate (n H2O2-.n FeSO4 . 7H2O =8:1 ) was added to the mixture; the reaction conducted for 30 min, and then solution pH was adjusted to about 9. Finally, the oxidized effluent flowed through a resin red until the adsorptive capacity reached 240 BV, and COD of the effluent water was lower than 100 mg/L, meeting the Grade-I standard of Comprehensive Discharge Standard of Sewage (GB8978-1996). [Condusio] The research could provide a new process for the treatment of enzymolysis wastewater.展开更多
文摘采用菌丝生长速率抑制法测定了北京、山东、江西等7个地区31株灰霉菌株和1株实验室标准菌株(BO5.10)对腐霉利的毒力。结果表明,32个供试灰霉菌株中,8个菌株对腐霉利属中等抗性,20个菌株属于低等抗性,4个菌株为敏感菌株。进一步测定了个别抗性菌株与敏感菌株的高盐渗透压、甘油含量以及电导率之间的差异。供试抗性及敏感菌株在1.25~10 g/L Na Cl浓度范围内可刺激菌落生长,超过此浓度界线抑制菌落生长,且对抗性菌株抑制率大于敏感菌株。抗腐霉利菌株甘油含量和电导率均高于敏感菌株。以上结果为灰霉病的抗性治理提供了理论依据。
基金Supported by the Project of Practical Innovation Training Program of Undergraduates in Jiangsu Province in 2012(232)Project of Visiting Engineers of Nanjing College of Chemical Technology in 2012
文摘[ Objective ] The study aimed to discuss the optimal conditions for the treatment of enzymolysis wastewater by centrifugation - coagu- lation - Fenton reagent oxidation - adsorption process. [ Metbod] According to the water-quality characteristics of wastewater from a heparin so- dium production factory of Jiangsu Province, enzymolysis wastewater was segregated from intestinal lavage wastewater and treated through cen- trifugation- coagulation- Fenton reagent oxidation-adsorption process, and the optimal technical parameters were determined. E Resultl After enzymolysis wastewater was centrifuged at a speed of 4 000 rpm, 0.6 g/L CTS as the coagulant was added to the supematant. Hereafter, pH of the coagulated effluent was adjusted to 3, and then 1.5% (V/V) H2O2 was added to the coagulated effluent; a certain amount of ferrous sul- fate (n H2O2-.n FeSO4 . 7H2O =8:1 ) was added to the mixture; the reaction conducted for 30 min, and then solution pH was adjusted to about 9. Finally, the oxidized effluent flowed through a resin red until the adsorptive capacity reached 240 BV, and COD of the effluent water was lower than 100 mg/L, meeting the Grade-I standard of Comprehensive Discharge Standard of Sewage (GB8978-1996). [Condusio] The research could provide a new process for the treatment of enzymolysis wastewater.