Storm-PURE™ Catch Basin Inserts
Phase II of EPA's National Pollution Discharge Elimination System (NPDES) requires all but
the smallest municipal and industrial storm sewer systems to treat storm water
discharge to the "maximum extent practicable". The Storm-PURE catch basin
insert, a two-stage unit that will fit into new or existing catch basins,
stands apart from competitive units in its ability to remove suspended solids,
hydrocarbons and other pollutants.
The upper section consists of a perforated metal
catch basket covered by a geotextile filter bag. This assembly captures
sediment and debris while allowing filtered water to pass freely down through
the center cone. The lower stage contains a patented Mycelx® filter insert
that attracts and holds tiny particles of hydrocarbons and oil-bound
pollutants. The specially treated adsorbent material instantly bonds
contaminant particles, resulting in a 95.0% removal rate of total petroleum
hydrocarbons.
Both stages are housed in a corrosion-resistant high density polyethylene
body with overflow slots at the top to act as a bypass in
unusually high flow conditions. The complete assembly will pass 230 gpm without
bypassing the flow.
Unmatched Pollutant Removal
The Storm-PURE
water treatment insert stands apart from competitive units in its ability to remove suspended solids, hydrocarbons and other pollutants. In a laboratory test, polluted storm water was processed through the unit, and samples of the influent and effluent were analyzed by Analytical Environmental Services, Inc. to determine removal efficiency. The results are shown in the table below:
Pollutant Removal Performance
| Analyzed Components |
Unit |
Reporting Limit |
Influent |
Effluent |
Removal |
| Total Suspended Solids (TSS) |
mg/L |
5 |
36 |
11 |
69.44% |
| Total Petroleum Hydrocarbons (TPH) |
mg/L |
5 |
96.9 |
BRL |
99.90% |
| *Chemical Oxygen Demand (COD) |
mg/L |
10 |
156 |
BRL |
94.23% |
| *Nitrogen |
mg/L |
0.2 |
1.49 |
BRL |
99.33% |
| *Total Phosphorus |
mg/L |
0.25 |
19.7 |
12.8 |
35.03% |
| *Iron |
ug/L |
100 |
1490 |
362 |
75.70% |
| *Copper |
ug/L |
5 |
86.2 |
11.5 |
86.66% |
| *Lead |
ug/L |
1 |
1110 |
106 |
90.45% |
| *Zinc |
ug/L |
10 |
6060 |
286 |
95.28% |
|
*Removal related to the components bonding with hydrocarbon molecules.
BRL = Below Reporting Limit |
Storm-PURE Specifications
Max. Flow Rate of Filter
(at 0 ft. of head weir flow) |
230 gpm |
(0.52 cfs) |
Max. Flow Rate of Bypass
(at 0.5 ft. of head orifice flow) |
1189 gpm |
(2.65 cfs) |
Max. Flow Rate of Filter and Bypass
(at 0.5 ft. of head orifice flow) |
1419 gpm |
(3.16 cfs) |
Primary Filter (Upper Section)
Sediment/Debris Storage Capacity |
1.42 cu ft |
(170 lbs) |
Sediment/Debris Particle Size
Captured by Primary Filter |
>0.033 in |
(838 micron) |
Sediment/Debris Particle Size
Captured by Secondary (Mycelx) Filter |
>0.012 in |
(300 micron) |
Secondary Filter Hydrocarbon
Removal Storage Capacity |
15 lbs |
(2.04 gal) |
| Secondary Filter Media Volume |
1.60 cu ft |
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