公开(公告)号：US06322701B1

公开(公告)日：2001-11-27

申请号：US09297487

申请日：1999-06-16

Applicant: Andreas Th Delighiannis

Inventor： Andreas Th Delighiannis

IPC: C02F152

CPC classification number: C02F1/705 ,  Y10S210/903 ,  Y10S210/906 ,  Y10S210/909 ,  Y10S210/917 ,  Y10S210/928

Abstract: A process for the treatment of waste waters containing chemically reducible dissolved organic and inorganic pollutants and suspended mater in particulate or colloidal form. The process comprises of contacting the water with metallic iron or ferrous ions (Fe2+), or mixtures thereof, in the presence of promoter metals, such as Cu, Pd, Pt, Au, Ag, and Ni, or oxides, sulfides and other insoluble compounds of these meals, which catalyze the redox reductions carried out by the iron or ferrous reagents. The production of ferric ions (Fe3+) as a final iron oxidation product allows for the simultaneous coagulation and precipitation of suspended colloidal and particulate solids out of the aqueous phase. In addition to the main reductive reaction scheme, the system performs a multitude of secondary reactions involving the ferrous and ferric ions produced in-situ which allows for the simultaneous removal of specific target pollutants, such as phosphate and hydrogen sulfide. The net effect of a treatment in accordance to this invention is the decrease in a wide range of carbonaceous, nitrogenous and other targeted pollutants present in a waste water stream in a dissolved, colloidal or particulate form and the chemical conversion, commonly referred to as “softening”, of non-readily biodegradable pollutants through a generally complex set of reactions and physical processes. As a result, the implementation of the process prior to or in parallel to conventional biological treatment makes the latter more feasible, more efficient, more economical in terms of both capital investment and operating cost and, also, the anally discharged water more compatible with environmental demands.

Abstract translation: 一种用于处理含有化学还原性溶解有机和无机污染物的废水和颗粒或胶体形式的悬浮物的方法。 该方法包括在助催化剂金属例如Cu，Pd，Pt，Au，Ag和Ni或氧化物，硫化物和其它不溶性的存在下使水与金属铁或亚铁离子（Fe 2+）或其混合物接触 这些膳食的化合物，其催化由铁或亚铁试剂进行的氧化还原还原。 作为最终铁氧化产物的铁离子（Fe 3+）的生产允许悬浮的胶体和颗粒固体同时凝结并沉淀出水相。 除主要还原反应方案外，该系统还进行大量二次反应，涉及原位产生的亚铁和三价铁离子，允许同时除去特定的目标污染物，如磷酸盐和硫化氢。 根据本发明的处理的净效果是存在于溶解，胶体或微粒形式的废水流中的大量含碳，含氮和其它目标污染物的减少以及通常称为“ 软化“，通过一套复杂的反应和物理过程，不易生物降解的污染物。 因此，在传统生物处理之前或之后实施该过程使得后者在资本投资和运营成本方面更可行，更有效率，更经济，并且还释放更多与环境相适应的水 需要。