公开(公告)号：US09457388B2

公开(公告)日：2016-10-04

申请号：US14334879

申请日：2014-07-18

Applicant: Chinese Research Academy of Environmental Sciences

Inventor： Beidou Xi ,  Yonghai Jiang ,  Yu Yang ,  Mingxiao Li ,  Zhifei Ma ,  Lieyu Zhang ,  Min Li ,  Fangyi Chen

IPC: B09C1/00 ,  B29C39/02 ,  B29C39/10 ,  C02F1/72 ,  B28B1/00 ,  B28B7/00 ,  B28B23/00 ,  C02F103/06

CPC classification number: B09C1/002 ,  B28B1/008 ,  B28B7/0091 ,  B28B23/0068 ,  C02F1/722 ,  C02F2103/06 ,  C02F2305/023

Abstract: The present invention involves a persulfate-release material used in the filler of permeable reactive barrier (PRB). This material presents double-layered structure characteristic: inner- and outer-layers are consisted of persulfate, cement, sand and water with different mass ratio. Two different types of moulds are used for the regulation of the shape of the two-layer structures, which guarantees the stability and reproducibility of its structures and properties. During the whole released process, the released rate become more uniform and stable by the use of this material. During the whole service period, the change of the released rate is very slow, and the service lifetime can be 1-10 years. This invention can both reduce the initial released rate and improve the later released rate, and thus the whole released rate can be more uniform, which can be an important method to promote the efficiency of the persulfate toward engineering application.

Abstract translation: 本发明涉及用于可渗透反应性屏障（PRB）填料中的过硫酸盐释放材料。 该材料呈现双层结构特征：内层和外层由不同质量比的过硫酸盐，水泥，砂和水组成。 两种不同类型的模具用于调节两层结构的形状，这保证了其结构和性能的稳定性和再现性。 在整个释放过程中，通过使用这种材料释放的速率变得更加均匀和稳定。 整个服务期间，公布率的变化非常缓慢，使用寿命为1 - 10年。 本发明可以降低初始释放速率，提高后期释放速率，从而整体释放率可以更均匀，这可以成为提高过硫酸盐工程应用效率的重要手段。