Production of Soluble Microbial Chelators and Their Impact on Methanogenic Treatment

爱荷华大学的吉恩·F·帕金博士和伊利诺伊大学的布鲁斯·E·里特曼博士的这项联合项目的目标包括评估废水处理过程中厌氧过程中产生可溶性代谢产物的速度，测定它们在呼吸过程中的螯合特性和降低金属毒性的作用。将开发一个统一的概念模型并将其用作评估更合理的处理过程设计方法的基础，而不是现在基于固体保留时间的影响而可能采用的方法，金属和底物负载对金属毒性的反应以及处理过程中所涉及的产甲烷微生物的营养要求。这是一个响应最近关于残留代谢产物和微量金属在厌氧废水处理中所起作用的研究结果的项目。通过这个合作项目，研究人员将利用中间结果协调他们的工作，将恒化器研究的结果与固定生物膜反应器上的可比反应联系起来。预计结果将改善用于工业和市政处理实践的生物处理工艺的工程设计。

The objective of this joint project between Dr. Gene F. Parkin at the University of Iowa and Dr. Bruce E. Rittmann at the University of Illinois include evaluation of the rate at which soluble metabolic products are produced during anaerobic processes for wastewater treatment, determination of their chelation properties and role in reducing metal toxicity during the respiratory process. A unified conceptual model will be developed and utilized as a basis for evaluation of more rational approaches to design of treatment processes than are now possible be based on effects of solids retention time, metal and substrate loading on metal toxicity to the reaction and nutritional requirements of the methanogenic organisms involved in the treatment process. This is a project that is responsive to recent findings regarding the role played by residual metabolic products and trace metals in anaerobic wastewater treatment. Through this cooperative project, the investigators will coordinate their work utilizing intermediate results to relate results of chemostat research to comparable reactions on fixed biofilms reactors. Results are expected to result in improvements in engineering design of biotreatment processes used for industrial and municipal treatment practice.