Changes

<p>A number of granular amendments have been demonstrated to improve nutrient removal from discharge water in BMPs such as [[bioretention cells]], [[absorbent landscapes]], [[sand filters]] or [[green roofs]]. </p>

A number of granular amendments have been demonstrated to improve nutrient removal from discharge water in BMPs such as [[bioretention cells]], [[absorbent landscapes]], [[sand filters]] or [[green roofs]].  

<p>There are two primary processes involved, precipitation and adsorption. Both mechanisms are ultimately finite, but have been shown in come cases to make significant improvements on the discharged water quality over several years. </p>

There are two primary processes involved, precipitation and adsorption. Both mechanisms are ultimately finite, but have been shown in come cases to make significant improvements on the discharged water quality over several years.

<table class = "table table-striped table-responsive">

{|class="wikitable"

<caption><strong>Soil Additives</strong></caption>

|+ Soil Additives

<tr class ='success'><th>Material</th><th>Benefits</th><th>Potential concerns</th></tr>

<tr><td>[[Biochar]]</td><td>-</td><td>Currently expensive<br>Energy intensive to produce</td></tr>

!style="background: darkcyan; color: white"|Material

<tr><td>[[Bold and Gold]]^TM<td>Total Phosphorus removal upto 71%<ref>Hood A, Chopra M, Wanielista M. Assessment of Biosorption Activated Media Under Roadside Swales for the Removal of Phosphorus from Stormwater. Water. 2013;5(1):53-66. doi:10.3390/w5010053.</ref></td><td>[http://boldandgold.com/index.html| Proprietary]</td></tr>

!style="background: darkcyan; color: white"|Benefits

<tr><td>[[Iron filings (ZVI)]]</td><td>Proven phosphorus retention</td><td>May harm plants<ref>Logsdon SD, Sauer PA. Iron Filings Cement Engineered Soil Mix. Agron J. 2016;108(4):1753. doi:10.2134/agronj2015.0427.</ref></td></tr>

!style="background: darkcyan; color: white"|Potential concerns

<tr><td>[[Red sand]]</td><td>Proven phosphorus retention</td><td>-</td></tr>

<tr><td>[[Sorptive media]]^TM</td><td>Proven phosphorus retention</td><td>[http://www.imbriumsystems.com/stormwater-treatment-solutions/sorbtive-media| Proprietary]</td></tr>

![[Biochar]]

<tr><td>[[Water treatment residuals]]</td><td>Waste product reuse</td><td>Quality</td></tr>

|?||Currently expensive<br>Energy intensive to produce

![[Bold and Gold]]^TM

|Documented Phosphorus removal upto 71%<ref>Hood A, Chopra M, Wanielista M. Assessment of Biosorption Activated Media Under Roadside Swales for the Removal of Phosphorus from Stormwater. Water. 2013;5(1):53-66. doi:10.3390/w5010053.</ref></td><td>[http://boldandgold.com/index.html|Proprietary]

![[Iron filings (ZVI)]]

|Proven phosphorus retention||May harm plants<ref>Logsdon SD, Sauer PA. Iron Filings Cement Engineered Soil Mix. Agron J. 2016;108(4):1753. doi:10.2134/agronj2015.0427.</ref>

![[Red sand]]

|Proven phosphorus retention||?

|-

![[Sorptive media]]^TM||Documented phosphorus retention||[http://www.imbriumsystems.com/stormwater-treatment-solutions/sorbtive-media| Proprietary]

![[Water treatment residuals]]

|Waste product reuse||Quality control

 

<em><references/></em>

<em><references/></em>

[[category: materials]]

[[category: materials]]