Evaluation of spray irrigation for on-site wastewater treatment and disposal on marginal soils

$30.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Two field sites with soil limitations (shallow depth to restrictive layers) were used in the evaluation of slow rate spray irrigation as an alternative methodology to conventional on-site wastewater treatment are disposal. Secondary treatment and disinfection of the effluent was performed before application to the soil-plant system at rates of 1.25 and 2.5 cm/wk. After 20 months of effluent application at Site 1 and 12 months of application at Site 2, adequate wastewater renovation was occurring at both sites. Nitrogen removal rates by the soil-plant system were between 85% and 95%, with NO3 -N concentrations in shallow groundwaters at both field sites less than 0.8 mg/L. Phosphorus removal rates were at least 96%. Storm water runoff quality measurements from Site 1 indicated no serious threat to nearby surface waters. Small increases in soil NO3 -N and NH4 +-N concentrations to the 30-cm depth occurred only at Site 2. There was no evidence of increased soil PO4-P concentrations as a result of wastewater irrigation. The soil moisture content increased slightly at depths measured from 30 to 150 cm during summer months at both sites. Both sites demonstrated that the renovation capacity of on-site spray irrigation systems in soils with limitations can be very efficient.

Keywords: DOMESTIC EFFLUENT; NITROGEN; ON-SITE DISPOSAL; PHOSPHORUS; SOILS; SPRAY IRRIGATION

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143096X127163

Publication date: January 1, 1996

More about this publication?
  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Information for Advertisers
  • WEF Bookstore
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more