Journal of Ecology and Rural Environment ›› 2018, Vol. 34 ›› Issue (10): 955-960.doi: 10.11934/j.issn.1673-4831.2018.10.013

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An In-situ Test Study on Nitrate Removal From Drinking Groundwater for Rural Families by Using Rice Wine as Carbon Source

HUANG Jun-yu, JIANG Ya-ping, CHEN Yu-dao, CHENG Ya-ping   

  1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
  • Received:2017-11-23 Online:2018-10-25 Published:2018-10-25


Nitrate is one of the most common pollutants in rural areas because of the excessive use of nitrogenous fertilizer and improper disposal of solid waste and domestic sewage. Groundwater polluted by nitrate have public influences on the safety of drinking water. In order to examine the availability of rice wine acted as carbon source in the practice of nitrate removal from drinking groundwater, in-situ tests with simple sand buckets at two family were carried out, located in the eastern area of Guilin City. In the tests, wine rice was used as a sole carbon source for nitrate removal, and local groundwater was used as influent. The results indicate that nitrate in the effluent can be almost completely removed by denitrification with good stability and the total nitrogen (TN) decreased significantly under the conditions of C/N ratio ranging from 1.5 to 2.2. The intermediates of denitrification including nitrite and ammonia nitrogen had no obvious accumulation. However, acetate and total organic carbon (TOC) may have more accumulation while excess rice wine used. The pH value of the effluent is about 0.8 higher than that of the influent. This study suggests that the method of nitrate removal associated with rice wine as carbon source has a significant practical value for rural families to ensure the safety of drinking water.

Key words: groundwater, nitrate, rice wine, drinking water, rural family

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