Global climate change is a change in the statistical distribution of weather patterns when that change lasts for an extended period of time. Nowadays, this change has been affect to water source shortage. Usage of reclaimed water is one of the most important solutions for this problem. There are a lot of methodologies for using reclaimed water instead of fresh water. Especially, agriculture field uses a lot of water to grow crops. Many countries water usage amount in agriculture is to 40~60% of their total water capacity. Therefore, usage of reclaimed water is one of solutions for supplement water shortage. There are several efforts to saving and improving water usage in agricultural field.

In pipeline irrigation system, pipes were made of metallic or non-metallic materials. Depending on the case, the metallic pipes are used for following; large diameter, high pressure or loading. Because of the corrosion problem of metallic pipes by water, non-metallic pipes also used if there is concern about corrosion. There are various techniques in order to prevent corrosion. In these methods, sacrificial anode method and pipe lining are useful method for irrigation pipeline. For the effective application of corrosion prevention for usage of reclaimed water, it is necessary that the evaluation of corrosion pipes with various type of water blending (reclaimed water, surface water, etc.).

In this study, we evaluated about corrosion index for blending effect of surface water and reclaimed water in metallic pipeline. Based on blending ratio, pH, alkalinity, conductivity, hardness, nitrate, nitrite, phosphate, ammonium were measured and evaluated in batch reactor. Based on this research, it is expected that the usage of this data can be useful for usage of various type of water in agriculture field and many engineers related corrosion field can apply this data for their works.

Acknowledgement

This research was supported by a grant (12-TI-C01) from Advanced Water Management Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government