Hydrochemical Characteristics and Quality Assessment of Shallow Groundwater in Poultry Farming Sites in Suzhou City, China

Abstract

In recent years, the impact of the excrement from large-scale poultry farms on the quality of shallow groundwater has attracted widespread attention. In the present study, the hydrogeochemical characteristics of shallow groundwater around poultry farming sites in the town of Zhuxianzhuang in Suzhou, Northern Anhui, China, were investigated using various statistical techniques, a Piper trilinear diagram, ion combination ratios, correlation analysis, and a fuzzy comprehensive evaluation method. The results show that the shallow groundwater in the area is dominantly of the HCO 3 -Ca type. The relative abundances of the major cations and anions in the groundwater are in the order Na + >Ca 2+ >Mg 2+ >K + and HCO 3According to the concentrations and distribution of tri-nitrogen in the groundwater, pollution is mainly associated with domestic wastewater, followed by poultry farm waste. The most severe pollution involves NO 2 -N, and this adversely impacts the potability of the shallow groundwater. The leaching of rocks and silicate weathering are the principal processes responsible for the ionic composition of the shallow groundwater in the study area. Class I, II, and III waters account for 9.52%, 28.57%, and 61.90%, respectively, of the groundwater in the area. The shallow groundwater is suitable for high salinity-tolerant plants or soils associated with good leaching conditions. Future water management in the poultry farming area should prioritize the control of shallow groundwater nitrite pollution.

Impact of Nitrate on the Removal of Pollutants from Water in Reducing Gas-Based Membrane Biofilm Reactors: A Review

“…Therefore, due to its low cost and wide availability, CH 4 as an electron donor is attracting researchers' attention in the field of biological reduction processes [47]. In contemporary society, the use of agricultural fertilizers, animal excrement, and the discharge of various industrial and urban waste contribute to the continuous increase in nitrate (NO 3 − ) concentrations in water bodies, becoming a widely prevalent environmental issue [55][56][57]. Especially in developing countries, the infiltration of NO 3 − from septic tanks into groundwater has become a serious environmental challenge [58].…”