Microplastics have become a rising issue in due to its detection in oceans, rivers, and tap water. Although a large number of studies have been conducted on the detection and quantification in various water bodies, the number of research conducted on the removal and treatment of microplastics are still comparatively low. In the current research, the inflow and removal of microplastics were investigated for various drinking water treatment plants around the world. Addition to the investigation of filed research, a survey was also conducted on the current research trend on microplastic removal for different treatment processes in the drinking water treatment plants. This includes the researches conducted on coagulation/flocculation, sedimentation, dissolved air flotation, sand filtration and disinfection processes. The survey indicated mechanisms of microplastic removal in each process followed by the removal characteristics under various conditions. Limitations of current researches were also mentioned, regarding the gap between the laboratory experimental conditions and field conditions of drinking water treatment plants. We hope that the current review will aid in the understanding of current research needs in the field of microplastic removal in drinking water treatment.

The purpose of this study is to suggest standardization solution about non-destructive testing of concrete structures. For this, we analyzed the present condition of non-destructive testing in domestic and based on it, we suggested a draft of standard plan for improvement of reliability and quantitative analysis in the result of non-destructive testing

The purpose of this study is to suggest new improving solution about problems of non-destructive test through the analysis of present status of non-destructive test and report. For this, we analyzed problems of non-destructive test operating into concrete structures and collected data by questionnaire of non-destructive test at the inspection and diagnosis work for the diagnosis company and suggested plans for improvement based on analyzed opinion and result.

This program has been developed for the efficient maintenance of gas supply facilities, consists of inspection and diagnosis program and DB management program. Especially by taking advantage of the Tablet PC maximize the efficiency of the work. also, relevant technician has been developed to be easy to use. Using the data obtained was the development of automatic computation module enables the rapid and reliable assessment of gas supply facilities.