Update on software development

We are currently incorporating our model and several algorithms into software that will be available through licensing by Oklahoma State University.  This software is mostly complete as of October 7th, 2014.  This software will aid the users in properly designing a P removal structure for their site, or it can be used to predict the performance and lifetime of a constructed filter.  Below is an example of one of the input screens.  Mr. David Webb of Florida, is currently obtaining a license and will soon be providing the service of P removal structure construction in that area.

If you would like to obtain a license/copy of the software, please contact Chad Penn.  Also, if you would like help in designing a structure for your specific site, I would be happy to help in the design, assuming that you are able to provide certain model inputs.

Recent articles on P removal structures or PSMs

Some articles are more recent than others.  Click to link.

Bell et al., 2014
Karczmarcyk and Bus, 2014
Klimeski et al., 2012
Klimeski et al., 2014
Lyngsie et al., 2014
Uusitalo et al., 2012
Canga et al., 2014
Lyngsie et al., 2014b
Penn et al., 2014
Wendling et al., 2014

New P removal structure leaflet

The field day presentation of the P removal structure in Westville, OK was successful.  This leaflet, which is an OSU extension document, was made available to those who attended.

The Structure is still removing a cumulative P load of at least 70%.  Thus far it has handled all flow, including an event that produced 500 gpm.

Depending on how quickly things proceed, the software for design guidance will be completed by the end of August and adoption into the EQIP cost share program should follow.

Spring update on P removal structure and presentation

Since installation in the fall, the P removal structure is still currently removing >90% of the cumulative dissolved P that has flowed into it.  Please see the following link for a recent presentation: http://dasnr.adobeconnect.com/p7kmw6j1uwt/

New published paper on structure design

This paper is open access at the Journal of soil and water conservation.  It summarizes much of the information in this blog regarding how to design a P removal structure tailored to a specific site.

We will continue to update this blog with results from the P removal structure.

First field day presentation of poultry farm structure and update

Field day announcement

There will be a field day presentation of the poultry farm runoff P filter on May 23rd, 2014 in Westville, OK.  The flyer and schedule of events is shown here.  Hope to see you there!  Please contact me for any additional information or questions.

Current performance of the structure

Since completion of the P removal structure last fall there has been very little precipitation here.  Thus far there has been only two events that have produced runoff at the site.  Both sets of samples showed nearly 100% P removal.  Due to problems with our connectivity to the automatic samplers, we cannot state what the flow rates were.  However, we will manually download the data to determine flow rates and duration.