HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (5) Citing Articles via Google Scholar Google Scholar Articles by Zvomuya, F. Articles by Rosen, C. J. Search for Related Content PubMed PubMed Citation Articles by Zvomuya, F. Articles by Rosen, C. J. GeoRef GeoRef Citation Agricola Articles by Zvomuya, F. Articles by Rosen, C. J. Related Collections Phosphorus Nutrients Other Environmental Contamination Water Pollution

Phosphorus Leaching in Sandy Outwash Soils following Potato-Processing Wastewater Application

^a Agriculture and Agri-Food Canada, Lethbridge Research Center, P.O. Box 3000, 5403-1st Ave. S., Lethbridge, AB T1J 4B1, Canada
^b Dep. of Soil, Water, and Climate, Univ. of Minnesota, 1991 Upper Buford Circle, Room 439, St. Paul, MN 55108-6028

View larger version (127K): [in a new window]   Fig. 1. Containment used in the breakthrough study at the low P monitoring well site. (Top) construction of the containment; (bottom) location of stainless steel suction samplers relative to well. Phosphorus and Br breakthrough were monitored in MW-31S monitoring well during the experiment.

View larger version (37K): [in a new window]   Fig. 2. Schematic diagram of drainage lysimeter used in the breakthrough tests at the low P and high P lysimeter sites.

View larger version (67K): [in a new window]   Fig. 3. Schematic diagram of the lysimeter breakthrough experiment showing the galvanized steel cylinder and the lysimeter in the center. The cylinder was pushed 0.1 m into the soil to minimize leakage along the edges.

View larger version (15K): [in a new window]   Fig. 4. Breakthrough curve of Br measured in the monitoring well at the low P site up-gradient of the winter sprayfields. The water table was 7 m below the ground surface. Wastewater containing Br was applied in two pulses on Days 1 through 3 and on Days 50 through 52. Bromide was not added to wastewater applied on Day 4 and on Days 14 through 18.

View larger version (12K): [in a new window]   Fig. 5. Bromide breakthrough curves measured in stainless steel suction samplers at 1.5- and 3-m depths at the low P monitoring well site up-gradient of the winter sprayfields. Wastewater containing Br was applied on Days 50 through 52 from the start of the experiment at the well site. Bromide breakthrough in the samplers was monitored from Day 50 to 56.

View larger version (24K): [in a new window]   Fig. 6. Measured and CXTFIT-fitted breakthrough curves for relative Br concentration in leachate collected at 1.5-m depth at nonirrigated, low P sites (a and b) and at wastewater irrigated, high P sites (c and d). The BTC for low site (a) is plotted only for the portion that received wastewater with Br added.

View larger version (23K): [in a new window]   Fig. 7. Breakthrough curves for (a) total P (TP) concentration and (b) relative P concentration measured in effluent collected at 1.5-m depth at nonirrigated, low soil test P sites and wastewater irrigated high soil test P sites. Total P concentration in the wastewater was 3.6 mg L–1.

View larger version (11K): [in a new window]   Fig. 8. CXTFIT-simulated breakthrough curve (BTC) for relative P concentration measured in effluent collected at the 1.5-m depth at a high P, wastewater irrigated site. Transport parameters were estimated from measured Br BTCs using the CXTFIT program.