Hydrochemistry Characteristics and Water Quality Assessment for Irrigation along the Second Songhua River in the South of the Songnen Plain, Northeast China
Sun Xiaoqing 1, 2  
,   Bian Jianmin 1, 2  
,   Zhang Chunpeng 1, 2  
,   Wang Yu 1, 2  
,   Wan Hanli 1, 2  
,   Jia Zhuo 1, 2  
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College of New Energy and Environment, Jilin University, Changchun, Jilin Province, China
Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin University, Changchun, Jilin Province, China
Wang Yu   

Jilin university, China
Submission date: 2018-11-17
Final revision date: 2019-01-19
Acceptance date: 2019-01-19
Online publication date: 2019-08-30
Publication date: 2019-10-23
Pol. J. Environ. Stud. 2020;29(1):371–395
In view of changes in the water environment in Songnen Plain and water quality problems in recent years, the Second Songhua River Basin was used as our research object. To conduct the water environment investigations, 11 surface water samples and 76 shallow groundwater samples were collected. Multiple methods, such as isotope hydrological analysis, principal component analysis, and irrigation water quality parameter (SSP, SAR, RSC, MAR, KR) analysis were used to systematically apply water chemistry analysis and its evolutionary process, and water quality evaluation for irrigation. The results showed that Ca2+ and HCO3 were the main ions in the water body. The regional groundwater was recharged by atmospheric precipitation, and the surface water received both atmospheric precipitation and groundwater recharge. The hydrogeological process included the weathering and dissolution of carbonates, and the ion exchange reaction. In addition, the major reaction of local groundwater was the weathering and dissolution of silicate. Water quality was affected by agricultural fertilizer and domestic sewage. The water downstream of the basin, if used for irrigation, might accelerate the formation of alkaline and saline soil, neither