Stormwater Treatment & Management 

Stormwater Treatment & Management

The team at Allied Pumps understands the challenges faced by engineers, regulatory authorities, developers and contractors in dealing with stormwater and have a proven track record in assisting with the design, specification and provision of stormwater treatment and management devices and solutions.

SPEL stormwater solutions are highly regarded globally and have been with us at Allied Pumps since 1991. Substantial resource has been invested in both laboratory and field testing here in Australia by independent professional bodies, including ongoing testing by several universities. Real results mean that the SPEL systems can be specified and installed with complete confidence.

We invite you to take a tour through our SPEL portfolio, the broadest solution-based offering to the stormwater industry in Australasia.


  • SPEL Aquaflo

    Don’t have your precious backyard or recreation area taken up with unsightly above ground water storage tanks — instead save space by installing an innovative in-ground SPEL Aquaflo storage system.

    These durable and robust storage systems are made from high-density polyethylene (HDPE) and are suitable for all types of in ground installations. They have a standard capacity range from 5000L up to 30,000L (larger on request).

    With water storage being a continuing demand for our drought prone environment, not only can we help the local farming community, but also councils, industry right down to your individual domestic requirements. The SPEL Aquaflo can be used for the effective treatment of; Stormwater, Grey water, Sewage, Retention, Reuse and Harvest.

  • SPEL Baffle Box

    Baffle boxes are concrete or fiberglass structures containing a series of sediment settling chambers separated by baffles. The primary function of baffle boxes is to remove sediment, suspended particles, and associated pollutants from storm water. Baffle boxes may also contain trash screens or skimmers to capture larger materials, trash - including plastic waste, and floatables.

    Baffle boxes have proven effective in removing sediment from storm water runoff. They are mainly utilized in areas where sediment control is a primary concern, while other storm water Best Management Practices (BMPs) may be more effective in areas where additional storm water pollutants, such as dissolved nutrients, oil and grease, or metals, are prevalent.

  • SPEL Basin

    SPEL Basin Modular Bioretention System is a highly advanced stormwater filtration system. Its size and capacity make it ideal for stormwater treatment trains that require high pollutant reduction in a small footprint. It can be used in place of standard catch basin structures, rain gardens, bioretention cells and media filters.

    As a self-contained treatment train, it incorporates the following treatment components:

    • screening
    • hydrodynamic separation
    • media filtration
    • bioretention filter

    The bioretention filter is an enhanced sub surface flow vegetated wetland with a special blend of sorptive media.

    The Modular Bioretention System’s treatment train approach makes this system very effective at removing a wide range of stormwater pollutants.

  • SPEL Ecoceptor

    SPEL Ecoceptor is a vertically configured pollutant trap, sediment and light liquids separator suitable for low risk applications. The Stormwater Quality Improvement Device (SQID) has a polyethylene or fibreglass unit, and is designed for use in stormwater drains.

    Flow rates on standard units are up to 1400 LPS and can fit pipe sizes from 225mm to 1200mm (with additional sizes available on request).

    The SPEL Ecoceptor is independently tested and certified for hydraulic efficiency and the capture of pollutants. It separates and captures pollutants, sediments and light liquids (petroleum hydrocarbons).

    The unique hydraulic treatment pipe is sized to suit specified flow rates. Ecoceptor has a special vortex cleaning action, which assists in preventing pollutants from discharging. The cylindrical shape of the SQID with its tapered base (there are no square corners) affords effective and thorough cleaning out of accumulated pollutants.


    SPEL electrocoagulation is the distinct economic and environmental choice for meeting water treatment discharge standards and compliance requirements. Capital and operating costs are greatly improved in comparison to traditional technologies with distinct process advantages.

    The SPEL electrocoagulation process destabilises suspended, emulsified and dissolved contaminants in an aqueous medium by introducing an electrical current into the medium. The electrical current provides the electromotive force to drive the chemical reactions. When reactions are driven or forced, the elements or compounds will approach the most stable state. As this occurs, the contaminants form hydrophobic entities precipitate and can easily be removed by a number of secondary separation techniques.

  • SPEL Filter

    The SPELFilter is a cartridge filter system that incorporates an upflow treatment process, through a spiral wrapped media configuration that maximises surface treatment area. Flow through the filter cartridges utilises a self-regulating siphon which results in a low maintenance and high performance stormwater treatment. The automatic backwash at the end of each storm event further lengthens the lifespan of the filter.

    Hydraulic pressure forces water through the filter media — causing a constant velocity throughout the filter area realising a consistent media contact time and therefore treatment.

    Upon completion of a treatment cycle, the filter backwashes and effectively dislodges particulates from the filtration layers. This re-establishes filter media interstitial porosity. The dislodged particles then accumulate away from the filter media allowing easy removal during maintenance.

    The SPELFilter range incorporates patented designs which use no moving parts, and in turn generates a true filter media regeneration effect.

  • SPEL Osorb

    Osorb is an absorbent nano-engineered glass useful for capturing petroleum hydrocarbons and other organics, allowing biological degradation to occur in the soil in stormwater systems.

    Specialised, reductive Osorb materials have been modified to both capture and break down a wide spectrum of volatile organic compounds (VOCs) and other contaminants, including:

    • Polyaromatic hydrocarbons (PAHs)
    • Endocrine disruptors
    • Pharmaceuticals
    • Nutrients, such as nitrates and phosphates
    • Pesticides, such as atrazine
    • Some metals, including copper, zinc, and lead ions
  • SPEL Floating Treatment Wetlands

    Increased urbanisation and farming can often result in low quality runoff water, which may upset the nutrient balance of streams and lakes by polluting the waterway with phosphorous, nitrogen or Total Suspended Solids (TSS). Retrofitting a water treatment system to the affected area will improve water quality significantly.

    Whatever type of pollutant you’re dealing with, SPEL Environmental’s innovative technologies have been proven to provide excellent results.

    The SPEL Floating Treatment Wetlands supplies a two-fold result: it provides a lush, fertile wetland for the beautification of canals, ponds, lakes, lagoons and other slow-flowing waterways, and also improves water quality. This natural filtration and biological treatment system has a positive social impact on the area. It can support many different types of plants — including native flora — and will help keep water quality at an extremely high level. In many cases, the floating wetland acts as a haven for both terrestrial and marine wildlife.

  • SPEL Hydrosystem

    A specialist stormwater filter, designed for installation within load bearing shafts and chambers of concrete or plastic construction. The pre fitted plastic housing is safe and easy to fit on site. The SPEL Hydrosystem uses an up-flow process. This means there is a minimal head drop between the inlet and the outlet. The stormwater is treated within the unit by the following processes: sedimentation, filtration, adsorption and precipitation. It is suitable for Heavy Metal, TSS and Nutrient reduction.

  • SPEL Puraceptor

    SPEL Puraceptor is a full retention separator that treats all flows. It is to be sized to contain more than the anticipated maximum oil spillage — enabling it to be fully operational in treating stormwater runoff at all times. It has two chambers, a coalescer and is fitted with an automatic closure device specifically designed to contain major oil spills, thereby making it suitable for high-risk applications. It achieves a water discharge quality of less than 5mg light liquids per litre, complying with European Standard BS EN 858.1. 2006. Treatable flow rates range from 2LPS to 200LPS. Pipe sizes range from 100mm to 450mm (larger sizes on request).

    Manage hydrocarbons with the SPEL Puraceptor

  • SPEL Smart Sponge

    SPEL Smart Sponge uses an innovative polymer technology which absorbs hydrocarbons from both pooled and flowing water and is ideal for waste water treatment, stormwater treatment and stormwater pollution treatment. It fully encapsulates recovered material – preventing it from leaching out, squeezing out or washing off. Once fully saturated, the SPEL Smart Sponge transforms the pollutants into a stable solid for easy recycling, providing a closed-loop solution to water pollution. 

  • SPEL Stormceptor

    SPEL Stormceptor Class 1 is a horizontally configured two-chamber Stormwater Quality Improvement Device (SQID), equipped with a gravity enhancing coalescer unit.

    For those with medium to low-risk applications, the Stormceptor Class 2 model (with no coalescer) is also available.

    The advanced design facilitates a retention period that provides quiescent conditions within the secondary chamber, efficiently promoting the separation of total suspended solids (TSS), light liquids and pollutants.

    SPEL stormwater treatment devices can accommodate a complete range of flow rates with corresponding pipe size and types.

  • SPEL Stormceptor Offline

    SPEL Stormceptor Class 1* is a horizontally configured two chamber stormwater quality improvement device (SQID) equipped with a gravity enhancing coalescer unit.

    The design, facilitated by a retention period of approximately 6 minutes generates quiescent conditions within the secondary chamber, efficiently promoting the separation of total suspended solids (TSS), light liquids and pollutants.

    Treatable flow rates range from 0.1LPS to 400+LPS (max. flow rate more than 4,000 LPS) and can fit pipe sizes from 100mm to greater than 1500mm.

    *Stormceptor Class 2 model with no coalescer is available for medium to low-risk applications.

  • SPEL Stormchamber

    SPEL StormChamber is an open bottomed, high-density polyethylene infiltration chamber for subsurface retention or detention of storm water runoff.

    The SPEL StormChamber provides an environmentally progressive and technologically advanced storage and pollutant removal solution – yet it is more cost-effective and requires less maintenance than other types of underground storm water management systems.

    The StormChamber reduces nutrient and other pollutant loadings by taking advantage of the natural biological and physical properties of the soil, directly comparable to the functions of a septic drain field. It also recharges ground water drinking supplies, while concurrently helping to maintain base flow to streams, wetlands, lakes, and ponds, and to counter salt-water intrusion.

  • SPEL Stormsack

    SPEL StormSack filtration solutions are highly engineered water quality devices that are deployed directly in the stormwater system to capture contaminants close to the surface for ease of maintenance. Easily retrofitted into new or existing structures, SPEL StormSack filtration technology is a decentralized approach to stormwater treatment that essentially re-purposes traditional site infrastructure and customizes it to meet specific site water quality goals. In this way, it satisfies important objectives of today’s LID (Low Impact Development) criteria.

    From an operations perspective, catch basins with SPEL Stormsack filters are also easier and quicker to clean out because pollutants are trapped just under the grate.

  • SPEL Tankstor

    SPEL Tankstor tanks are manufactured for many applications and in a wide range of specifications to handle such substances as water, sewage, farm effluent, petroleum products and chemicals.

    Our modern plant, equipment and quality assurance procedures ensure both quality and competitive pricing.

    Being manufactured in glass reinforced plastics, SPEL tanks are light, easy to handle and install. They are not susceptible to rust, exhibit excellent corrosion resistant properties and have a life expectancy in excess of 50 years.

  • SPEL Thirsty Duck

    SPEL Thirsty Duck products are revolutionary flow control technology for stormwater systems.

    In short, SPEL Thirsty Duck products are floating outlets and skimmers that produce a constant discharge regardless of water surface elevation. They work by suspending an orifice at a fixed depth below the water surface and operate at Constant Head.

  • SPEL Triceptor

    The SPEL Triceptor is a combination of the Stormceptor and Puraceptor functions and features in the one treatment device. The benefit of the Triceptor is that with one treatment device you can treat both the high and low risk areas of a catchment.

    The Triceptor has the hydrocarbon spill containment function of the Puraceptor whilst also incorporating the treatment quality and high flow bypass functions of the Stormceptor.

  • SPEL VOC Sock

    The SPEL VOCSocks® are self-contained water processing units that contain a specially designed Osorb® material for in-well treatment applications. VOCSocks capture and remove volatile organic compounds (VOCs) and pollutants in water.

    SPEL stock VOCSocks that fit into monitoring wells 2” or larger, and custom sizes can be ordered. VOCSocks are easy to use. To begin treatment, a VOCSock is simply inserted into a well lowered into the contaminated water.