Ecosol - Waste Water Management

Although in many cases treatment of pollutants as close as possible to the source is preferred (see here) there are many situations where in-line, or end-of-line, treatment is more appropriate and this is where Ecosol's award-winning Net Tech Solid Pollutant Filter (refer below) and its RSF 1000 and RSF 4000 are often seen as more effective solutions.

It is here that our focus on solutions rather than products is evident. We always look to provide the best solution to your problem.

The Ecosol Net Tech removes and retains gross pollutants in stormwater flows. Independent testing (see here) has confirmed that unit typically captures more than 91% of gross pollutants larger than 19mm in diameter.

The unit's simple design minimises any hydraulic impact, thereby enabling it to be installed in-line or end-of-line on most drainage networks. It can be fitted on a wide range of pipes, box culverts, multiple outlets, large junction pits, and open channels. It also works equally well in tidal and submerged environments.

The Ecosol Net Tech unit's unique feature is a simple, yet highly-effective, release mechanism that eliminates the risk of flooding. Unlike other proprietary products the unit will treat 100% of all stormwater flows until the net becomes full or releases under critical flow conditions.

The Ecosol Net Tech meets all accepted industry standards and guidelines, and has been independently tested at a NATA approved facility. You can see the results here.

The Ecosol Net Tech is made from durable and reliable materials that ensure longevity and safe operating for its expected life. Only the highest-quality, corrosive-resistant materials are used in the manufacture of all Ecosol units. For more information about materials used and their expected life, click here.

However, the flexibility of our approach means that if the Ecosol Net Tech is not the most appropriate solution for your project you will most likely be able to use one of our other products, click here to learn more.

The product has been installed in many locations throughout Australia. To see a sample from our projects listing and read some case studies click here.

Read more below about the Ecosol Net Tech and how it works or use the specifying form to provide us with details about your project so that we can provide you with a quote.

Net Tech drawings are available below for your information.

The in-line/end-of-line Ecosol Net Tech Solid Pollutant Filter removes, and retains, gross pollutants from stormwater flows. Unlike most other GPTs, it will continue to capture and retain gross pollutants during a rain event until the filtration net reaches capacity when it disengages from the end of the conduit. This helps eliminate any adverse impact or potential for flooding during peak flow storm events.

The Ecosol Net Tech consists of a stainless-steel sleeve extension that is inserted and fixed into existing, or new, pipe outlets. This extension is fitted with a removable heavy-duty ultraviolet-stabilised polyethylene net for capturing, and retaining, gross pollutants.

Once installed, under any flow, the Ecosol Net Tech will start capturing and retaining pollutants. The filtered stormwater passes through the net and downstream to the receiving waterway.

The unit has a fail-safe release mechanism that allows the filtration net to disengage when it has reached its maximum designed holding capacity.

When the filtration net disengages from the sleeve extension a pull cord connected to the main unit tightens around the net throat and prevents the remobilisation of captured pollutants.

Once the net has released and at the end of the rain event it should be emptied and re-secured to the end of the sleeve extension ready for operation.

The Ecosol Net Tech requires little, or no, structural change to the existing stormwater system, thereby reducing initial capital costs and minimising disruption to the general public during installation.

One key advantage with the design of the Ecosol Net Tech unit is its ability to operate effectively in both submerged and tidal environments. Under these conditions the unit will continue to capture and retain pollutants without any remobilisation. This is a limiting factor with many other proprietary GPTs.

The Ecosol Net Tech unit before a rain event - note the empty filtration net

The Ecosol Net Tech unit in operation at the start of a rain event

The Ecosol Net Tech unit in operation under full flow conditions

The Ecosol Net Tech unit at the end of a rain event

Pollutant Removal Efficiency

The Ecosol Net Tech Solid Pollutant Filter is designed to remove and retain gross pollutants and other attached pollutants present in stormwater flows. Independent testing (see here) has confirmed that unit typically collects and retains more than 91% of gross pollutants larger than 19mm in diameter at a range of flows.

Sieve Size (mm) Capture Efficiency

> 19.00 91%

> 13.00 67%

> 6.70 47%

> 2.36 20%

> 1.78 17%

> 0.15 11%

The defining advantages of the Ecosol Net Tech are that it:

Captures more than 90% of gross pollutants greater than 19mm;

Does not re-mobilise captured pollutants;

Eliminates the risk of flooding by use of a unique release mechanism;

Has minimal head/hydraulic loss;

Is easily installed, cleaned, and maintained;

Can be retrofitted to most existing stormwater systems;

Operates in dry, tidal, and submerged environments; and

Is ideal for locations with limited access and as a low-cost alternative to large GPTs.