A microwave enhanced oxidation process for nutrients solubilization from organic slurries

本项目的目的是开发一种经济上可行，技术上可行的工艺，从有机生物废物浆中回收有价值的材料。英属哥伦比亚大学（University of British Columbia）开发了过氧化氢微波（PM）工艺，用于污水污泥和农业有机浆料的处理和增溶（专利申请中，于2006年8月11日提交）。PM工艺包括在加入过氧化氢后，将含有各种有机固体的浆料短时间暴露在微波（MW）辐射下，以改变固体材料的结构，并在此过程中释放营养物质。在此处理过程中，生物固体的悬浮固体含量降低，各种营养物质被释放。小规模试验表明，该工艺在降低固体含量和从有机固体浆料中释放营养物质方面非常有效。它是处理各种有机材料浆料的一种高效、灵活和动态的工艺，具有相当大的商业潜力。本提案的具体目标是：1)在批量和连续操作模式下开发和测试PM工艺，进一步探索各种操作参数对处理效率的影响和影响，然后进行大规模实验；2)根据实验室规模的结果，设计和建立一个合适的、更大规模的工业PM系统，进行初始的规模实验，以促进全规模PM过程的完全商业化。

The purpose of this proposed project is to develop of an economically viable, technologically feasible process to recover valuable materials from organic bio-waste slurries. The peroxide-microwave (PM) process has been developed for the treatment and solubilization of sewage sludge and agricultural organic slurries at University of British Columbia (patent pending, filed for on Aug.11, 2006). The PM process consists of exposing slurries containing various organic solids to microwave (MW) radiation for a short period of time after the addition of hydrogen peroxide to alter the structure of the solid materials, and to release nutrients in the process. During this treatment, the suspended solids content of the biosolids is reduced, and various nutrients are released. The process has been shown to be very effective in reducing solids content and releasing nutrients from slurries of organic solids in the small-scale tests. It is an efficient, flexible and dynamic process for treating various slurries of organic materials that has considerable commercial potential. The specific objectives of this proposal are to: 1) develop and test the PM process in batch and continuous modes of operation, to further explore the effects and impacts of various operating parameters on treatment efficiency, before scale-up experiments can be conducted; and 2) design and build a suitable, larger scale, industrial PM system, based on lab-scale results, to conduct initial scale-up experiments to facilitate the full commercialization of a full-scale PM process.