SCIRP Mobile Website
Paper Submission

Why Us? >>

  • - Open Access
  • - Peer-reviewed
  • - Rapid publication
  • - Lifetime hosting
  • - Free indexing service
  • - Free promotion service
  • - More citations
  • - Search engine friendly

Free SCIRP Newsletters>>

Add your e-mail address to receive free newsletters from SCIRP.

 

Contact Us >>

WhatsApp  +86 18163351462(WhatsApp)
   
Paper Publishing WeChat
Book Publishing WeChat
(or Email:book@scirp.org)

Article citations

More>>

T. Maruyama, F. Noto, T. Takahashi, K. Nakamura and T. Onishi, “Assessment of Environmental Nitrogen Pollution Load Potential from Sewage Treatment Water in the Tedori River Alluvial Fan Area, Japan,” Paddy and Environment, Vol. 9, No. 2, 2011, pp. 267-274. doi:10.1007/s10333-010-0248-9

has been cited by the following article:

  • TITLE: Long-Term Assessment of Nitrogen Pollution Load Potential for Groundwater by Mass Balance Analysis in the Tedori River Alluvial Fan Area, Japan

    AUTHORS: Toshisuke Maruyama, Masashi Yoshida, Keiji Takase, Hiroshi Takimoto, Shigeo Ishikawa, Sadao Nagasaka

    KEYWORDS: Water Balance; Nitrogen Balance; Groundwater Pollution; Sewage Treatment Water; Pollution from Farmland; Nitrogen Pollution Load Potential

    JOURNAL NAME: Journal of Water Resource and Protection, Vol.5 No.2, February 4, 2013

    ABSTRACT: To evaluate the nitrogen pollution load in an aquifer, a water and nitrogen balance analysis was conducted over a thirty-five year period at five yearly intervals. First, we established a two-horizon model comprising a channel/soil horizon, and an aquifer horizon, with exchange of water between the aquifer and river. The nitrogen balance was estimated from the product of nitrogen concentration and water flow obtained from the water balance analysis. The aquifer nitrogen balance results were as follows: 1) In the aquifer horizon, the total nitrogen pollution load potential (NPLP) peaked in the period 1981-1990 at 1800 t·yr-1; following this the NPLP rapidly decreased to about 600 t·yr-1 in the period 2006-2010. The largest NPLP input component of 1000 t·yr-1 in the period 1976-1990 was from farmland. Subsequently, farmland NPLP decreased to only 400 t·yr-1 between 2006 and 2010. The second largest input component, 600 t·yr-1, was effluent from wastewater treatment works (WWTWs) in the period 1986-1990; this also decreased markedly to about 100 t·yr-1 between 2006 and 2010; 2) The difference between input and output in the aquifer horizon, used as an index of groundwater pollution, peaked in the period 1986-1990 at about 1200 t·yr-1. This gradually decreased to about 200 t·yr-1 by 2006-2010. 3) The temporal change in NPLP coincided with the nitrogen concentration of the rivers in the study area. In addition, nitrogen concentrations in two test wells were 1.0 mg·l-1 at a depth of 150 m and only 0.25 mg·l-1 at 50 m, suggesting gradual percolation of the nitrogen polluted water deeper in the aquifer.