Evaluation of liquid shipping containers (TILT- Transportable, Integrated Local Treatment) under the effects of wind and seismic loading

点击翻译按钮获取中文摘要

A TILT is a box shape steel structure specially designed for transporting goods and products.The standard dimensions allow intermodal transportation (such as ship, truck and rail) without the need to intermediate reloading. Containerized WWTP's are commonly employed in remote communities, industrial and constructions sites, work camps and any facility without access to major and WWTPs. Despite the satisfactory performance, these products are dealing with some issues. The main problem is the very high cost of manufacturing containerized units. In addition, these products are constructed as horizontal units which results in limited height and consequently limited treatment capacity. An alternative idea is to employ the standard TILT containers in a vertical fashion. There are many advantages that could be gained such as significantly lower cost by needing less units compared to other horizontal containerized units; lower site preparation cost; higher capacity due to vertical installation; and due to the international standard sizes, they could be easily transported using various modes of transportation (such as truck) which is of high importance in remote areas. The TILT containers can be used in wastewater as liquid storage/equalization, bioreactor/aeration tank, anaerobic reactor, moving bed bioreactor, CFIC, sequencing batch reactor, MBR plant aeration tank, bio-trickling filter and tertiary filter. The objective of the proposed R& D project is to evaluate the liquid shipping containers, TILT for wastewater treatment facility applications. Many issues such as stability leaking, local buckling and global collapse may occur when the liquid filled TILT container is subjected to seismic, wind and hydrostatic loads. An extensive numerical program is proposed to evaluate the structural properties of TILT containers and evaluate the possibility of developing a strengthening scheme which transforms the TILT container into a containerized liquid storage vessel for waste treatment process.