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<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> | + | <td>Gypsum</td> |
− | <td> | + | <td>Naturally and widely occurring mineral made up of calcium sulfate and water.</td> |
− | <td> | + | </tr> |
+ | <tr> | ||
+ | <td>Alum*</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*</td> | ||
+ | <td>Cations that bridge negatively charged sediment particles, causing them to coagulate and settle.</td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
+ | |||
+ | '''*''' Alum and aluminum and iron chlorides are also frequently used in Minnesota to coagulate soluble phosphorus out of stormwater and water bodies. | ||
[[category:table]] | [[category:table]] |
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. | |
Alum* | Aluminum sulfate material widely used in water treatment industry. Often more efficient than gypsum but can acidify treated water if overdosed. | |
Aluminum and iron chlorides* | Cations that bridge negatively charged sediment particles, causing them to coagulate and settle. |
* Alum and aluminum and iron chlorides are also frequently used in Minnesota to coagulate soluble phosphorus out of stormwater and water bodies.