Evaluation of Microflocculation Due to Prezonation

该奖项旨在资助对机理基础的调查研究，并为在水处理实践中应用臭氧作为预氧化剂所观察到的微絮凝建立模型。本研究主要针对有色、低碱度、低浑浊水源的预臭氧化引起的微絮凝问题。研究了四种机制的影响。这些是(a)腐殖质粒度分布的重新排列，导致更有效的混凝和絮凝；(b)通过氢键重组腐殖质臭氧化降解产物；(c)氧化和分离与腐殖质材料络合的金属及其随后作为混凝剂的作用。(d)溶解的体溶液金属与络合金属结合，作为混凝剂甚至沉淀。首席研究员非常有资格进行拟议的研究。建议提供为期两年的持续奖助金。该奖项第一年的奖金为76100美元。

This award is for funds to support research on the investigation of a mechanistic basis and to develop a model for the microflocculation observed with the application of ozone as a preoxidant in water treatment practice. The research will address microflocculation due to preozonation highly on colored, low alkalinity, low turbidity source waters. The influence of four mechanisms will be investigated. These are (a) rearrangement of humic material particle size distributions leading to more efficient coagulation and flocculation, (b) recombination of humic ozonization degradation products via hydrogen bonding, (c) oxidation and separation of metals complexed with humic material and their subsequent action as coagulants, and (d) combination of dissolved bulk solution metals with complexed metals to act as coagulants or even to precipitate. The principal investigator is highly qualified to perform the proposed research. A two year continuing grant is recommended. This award is for $76,100 for the first year.