Changes

Jump to navigation Jump to search
Line 14: Line 14:  
* Catch basin or other pre-fabricated inlet structure sump;
 
* Catch basin or other pre-fabricated inlet structure sump;
 
* [[Level spreader]];
 
* [[Level spreader]];
*[[Pretreatment features| Forebays]] (well suited for bioretention cells);
+
*[[Pretreatment features| Forebays]] (well suited for bioretention cells). See [[Pretreatment features]] for guidance on sizing.;
 
* [[Stone]] and [[geotextile]] filter: A shallow excavation on the filter media bed surface at the inlet, lined with geotextile and rip rap or decorative stone cover; and,
 
* [[Stone]] and [[geotextile]] filter: A shallow excavation on the filter media bed surface at the inlet, lined with geotextile and rip rap or decorative stone cover; and,
 
*[[Sand filters]] (well suited for underground [[infiltration]]);
 
*[[Sand filters]] (well suited for underground [[infiltration]]);
Line 20: Line 20:     
==Concentrated underground flow==
 
==Concentrated underground flow==
This type of pretreatement is dominated by proprietary systems, some of which have undergone verification under the [http://etvcanada.ca/ Environmental Technology Verification (ETV)] program.  
+
This type of pretreatment is dominated by proprietary systems, some of which have undergone verification under the [http://etvcanada.ca/ Environmental Technology Verification (ETV) Canada] program. Pretreatment devices suited to concentrated underground flow, or pipe flow include the following:
 +
* Oil and grit (hydrodynamic) separators
 +
* Manhole baffles
 +
* Isolated chamber row filters
 +
* Membrane filters
 +
* Media filters
 +
Membrane and media filters are more commonly used as "stand alone" water quality treatment practices when space for surface practices is not available, but may also be used downstream of LID facilities or treatment trains to enhance removal of sediment and other targeted pollutants (e.g., nutrients, metals) where warranted by receiving water sensitivity.
 +
<br>
    
{|class="wikitable"
 
{|class="wikitable"
Line 27: Line 34:  
!style="width: 10%;"|Type
 
!style="width: 10%;"|Type
 
!style="width: 40%;"|Description
 
!style="width: 40%;"|Description
!style="width: 25%;"|ETV products
+
!style="width: 25%;"|ETV Canada verified products
 
!style="width: 25%;"|Other products (not verified)
 
!style="width: 25%;"|Other products (not verified)
 +
|-
 +
!Overland flow sumps
 +
|Collects and settles debris as overland flow passes through sump to treatment practice.||
 +
|
 +
*Catch basin or other non-proprietary pre-fabricated inlet structure sump
 +
*[https://www.rainguardian.biz/ Rain Guardian]
 
|-
 
|-
 
!Catch basin inserts
 
!Catch basin inserts
Line 37: Line 50:  
*[https://www.enviropod.com/products/littatrap Littatrap]
 
*[https://www.enviropod.com/products/littatrap Littatrap]
 
*[http://www.bmpinc.com/ Snout]
 
*[http://www.bmpinc.com/ Snout]
|-
  −
!Manhole baffles
  −
|Baffles slow flow, encouraging larger, heavier particles to drop out of the water column. A skimmer may also trap floating debris, oils and grease.||
  −
|
  −
*[http://upstreamtechnologies.us/products/safl.shtml SAFL Baffle]
   
|-
 
|-
 
!Oil and grit (hydrodynamic) separators
 
!Oil and grit (hydrodynamic) separators
Line 50: Line 58:  
*[https://www.hydro-int.com/en/products/first-defense First Defense]
 
*[https://www.hydro-int.com/en/products/first-defense First Defense]
 
*[http://www.hydroworks.com/hydrostorm.html Hydrostorm]
 
*[http://www.hydroworks.com/hydrostorm.html Hydrostorm]
*[http://nextstorm.ca/sdd/ SDD]
+
*[https://biocleanenvironmental.com/sciclone-separator SCICLONE HDS]
 +
*[http://nextstorm.ca/en/oil-grit-separator-sdd/ SDD]
 
*[http://www.imbriumsystems.com/stormwater-treatment-solutions/stormceptor-ef Stormceptor EF]
 
*[http://www.imbriumsystems.com/stormwater-treatment-solutions/stormceptor-ef Stormceptor EF]
 +
|-
 +
!Manhole baffles
 +
|Baffles slow flow, encouraging larger, heavier particles to drop out of the water column. A skimmer may also trap floating debris, oils and grease.||
 
|
 
|
 +
*[http://upstreamtechnologies.us/products/safl.shtml SAFL Baffle]
 
|-
 
|-
!Isolated chamber row filter
+
!Isolated chamber row filters
 
|Separate rows at inlets, not connected by pipes to the other chambers, that isolate the bulk of sediment and associated pollutants and designed for ease of access by jet flushing cleaning equipment.   
 
|Separate rows at inlets, not connected by pipes to the other chambers, that isolate the bulk of sediment and associated pollutants and designed for ease of access by jet flushing cleaning equipment.   
 
|
 
|
Line 71: Line 84:  
|
 
|
 
*[http://www.imbriumsystems.com/stormwater-treatment-solutions/filterra Filterra]
 
*[http://www.imbriumsystems.com/stormwater-treatment-solutions/filterra Filterra]
*Nonproprietary concrete inlet sump
+
*[https://www.adspipe.com/water-management-solutions/water-quality/filters/bayfilter-stormwater-treatment-system BayFilter]
*[https://baysaver.com/products/bayfilter/ BayFilter]
   
*[https://www.conteches.com/stormwater-management/treatment/stormwater-management-stormfilter StormFilter]
 
*[https://www.conteches.com/stormwater-management/treatment/stormwater-management-stormfilter StormFilter]
 +
*[https://hydro-int.com/en/products/flo-filter#dismiss-notification Up-Flo Filter]
 
|
 
|
|-
+
*[https://www.imbriumsystems.com/stormwater-treatment-solutions/sorbtive-media Sorbtive Media]
!Overland flow sumps
  −
|Collects and settles debris as overland flow passes through sump to treatment device.||
  −
|
  −
*[http://www.rainguardian.biz/project-planing/chamber-selection Rain Guardian]
  −
*Catch basin or other pre-fabricated inlet structure sump
  −
*Nonproprietary concrete inlet sump
   
|-
 
|-
 
|}
 
|}
Line 88: Line 95:  
This article is particularly heavy on proprietary systems and information. Please inform us of any omissions or broken links using the box below:
 
This article is particularly heavy on proprietary systems and information. Please inform us of any omissions or broken links using the box below:
 
[[category: Pretreatment]]
 
[[category: Pretreatment]]
  −
Also see [[Pretreatment features]]
 

Navigation menu