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<font size=3>'''List of chemicals typically used for treating turbidity table'''</font size><br> | <font size=3>'''List of chemicals typically used for treating turbidity table'''</font size><br> | ||
− | Link to this [[List of chemicals typically used for treating turbidity|table]] | + | Link to this [[List of chemicals typically used for treating turbidity (Source: adapted from FHWA, 2008)|table]] |
<table class="sortable"> | <table class="sortable"> | ||
<tr> | <tr> | ||
− | <th> | + | <th>Chemical Type</th> |
− | <th> | + | <th>Chemical Name</th> |
− | <th> | + | <th>Description</th> |
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</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td rowspan=2>Polymers</td> |
− | <td> | + | <td>Chitosan</td> |
− | <td> | + | <td>Made from chitin. Rapidly binds to suspended sediment. Unlikely to adversely affect aquatic life.</td> |
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</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td>Anionic Polyacrylamide (PAM)</td> |
− | <td> | + | <td>Synthetic polymer; includes a wide variety of chemicals based on acrylamide unit. Ensure that the product selected is anionic -- cationic products are toxic to aquatic environments. Flocculate should be removed via filtration or sedimentation.</td> |
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</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td> | + | <td rowspan=4>Other additives</td> |
− | <td> | + | <td>Diallyldimethyl ammonium chloride (DADMAC)</td> |
− | <td> | + | <td>Positively charged monomer that binds negatively charged sediment particles into flocs. Can exhibit a strong aquatic toxicity.</td> |
− | <td> | + | </tr> |
− | <td> | + | <tr> |
− | <td>1. | + | <td>Gypsum</td> |
− | <td> | + | <td>Naturally and widely occurring mineral made up of calcium sulfate and water.</td> |
− | <td> | + | </tr> |
+ | <tr> | ||
+ | <td>Alum<sup>1</sup></td> | ||
+ | <td>Aluminum sulfate material widely used in water treatment industry. Often more efficient than gypsum but can acidify treated water if overdosed.</td> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td>Aluminum and iron chlorides<sup>1</sup></td> | ||
+ | <td>Cations that bridge negatively charged sediment particles, causing them to coagulate and settle.</td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
+ | <font size=1><sup>1</sup>Alum and aluminum and iron chlorides are also frequently used in Minnesota to coagulate soluble phosphorus out of stormwater and water bodies.</font size> | ||
− | [[ | + | <noinclude> |
+ | [[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Sediment control]] | ||
+ | </noinclude> |
List of chemicals typically used for treating turbidity table
Link to this table
Chemical Type | Chemical Name | Description |
---|---|---|
Polymers | Chitosan | Made from chitin. Rapidly binds to suspended sediment. Unlikely to adversely affect aquatic life. |
Anionic Polyacrylamide (PAM) | Synthetic polymer; includes a wide variety of chemicals based on acrylamide unit. Ensure that the product selected is anionic -- cationic products are toxic to aquatic environments. Flocculate should be removed via filtration or sedimentation. | |
Other additives | Diallyldimethyl ammonium chloride (DADMAC) | Positively charged monomer that binds negatively charged sediment particles into flocs. Can exhibit a strong aquatic toxicity. |
Gypsum | Naturally and widely occurring mineral made up of calcium sulfate and water. | |
Alum1 | Aluminum sulfate material widely used in water treatment industry. Often more efficient than gypsum but can acidify treated water if overdosed. | |
Aluminum and iron chlorides1 | Cations that bridge negatively charged sediment particles, causing them to coagulate and settle. |
1Alum and aluminum and iron chlorides are also frequently used in Minnesota to coagulate soluble phosphorus out of stormwater and water bodies.
This page was last edited on 26 July 2022, at 13:23.