Highly Efficient Treatment System of Wastewater Including Recalcitrant Substances Utilizing Membrane Separation Process

利用膜分离工艺高效处理含有顽固物质的废水系统

基本信息

批准号：
06680537
负责人：
OZAKI Hiroaki
金额：
$ 0.32万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

The characteristics of leachate from domestic waste landfill site and the leachate treatment using membrane separation process are investigated and discussed. The main results obtained are as follows.1. The leachate includes recalcitrant substances measured as COD,nitrogen compounds and high concentrations of inorganic salts. The 45% of COD in the leachate remaind in the effluent when the leachate was treated by a conventional process combined with activated carbon plant. The composition of this residual COD is still uncertain. The T-THM formation ability was not reduced in the conventional treatment process searched in this research.2. Reverse osmosis (RO) could separate almost all pollutants in the leachate and reduce the T-THM formation ability. However, the process has a disadvantage of membrane fouling, probably responsible for silica in the leachate.3. Low pressure reverce osmosis (LPRO) is an effective leachate treatment process providing high product of permeation water and comparatively high rejection of solutes except for nitrogen compounds. The combined process with biology (oxidation, nitrification and denitrification) and LPRO is more effective than a conventional leachate treatment process.4. The solute permeability in LPRO memmbrane depends on the charge of memmbrane and ions in many cases. The divalent cations provided lower rejection of coexistent cations in mixed solutions system than that of the cations in single solution system.

研究和讨论了使用膜分离过程的家庭废垃圾填埋场和渗滤液处理的特征。获得的主要结果如下1。渗滤液包括以鳕鱼，氮化合物和高浓度的无机盐测量的顽固物质。当渗滤液与活性碳植物结合使用的常规过程处理时，渗滤液中剩余的鳕鱼的45％剩余。该残留COD的组成仍然不确定。在这项研究中搜索的常规治疗过程中，T-THM形成能力并未降低。2。反渗透（RO）可以将渗滤液中的几乎所有污染物分开，并降低T-The形成能力。但是，该过程具有膜结垢的缺点，可能是渗滤液中二氧化硅的原因3。低压渗透渗透（LPRO）是一种有效的渗滤液处理过程，除氮化合物外，渗透水的产物很高，溶质排斥相对较高。与生物学（氧化，硝化和反硝化）和LPRO相结合的过程比常规的渗滤液治疗过程更有效。4。在许多情况下，LPRO内膜中的溶质渗透性取决于内膜和离子的电荷。与单溶液系统中的阳离子相比，二价阳离子在混合溶液系统中的共存阳离子提供了较低的排斥反应。