SPELFilter

SPELFilter® is a highly engineered stormwater filtration system designed to remove total suspended solids (TSS), heavy metals, nitrogen and phosphorous. It is effective at removing both particulate and dissolved pollutants including metals and nutrients. SPELFilter’s design has no moving parts. Hydraulic pressure forces water through the filter media, discharging through the centre pipe and out through the outlet manifold pipe work. Upon completion of a treatment cycle, each cartridge backwashes and effectively dislodges particulates from the filtration layers. This re-establishes filter porosity and contributes to the long life span of each cartridge. The dislodged particles accumulate on the chamber floor for easy removal during maintenance. The modular cartridge based system allows for simple, cost effective maintenance by exchanging one or all of the cartridges as required.

Cartridge Filter System

SPELFilter® is a precision engineered, high-performance stormwater filtration device designed to remove sediment based and dissolved pollutants such as heavy metals, nitrogen and phosphorous. It is effective at capturing metals in both particulate and dissolved formats as well as the dissolved and particulate elements of phosphorous.

SPELFilter

Certified Mitigation Index

TSS	0.91
Metals	0.84

Note: Whilst the SPELFilter will capture oil, it has not been tested for oil capture as this would normally be done via a primary treatment device such as the SPEL ESR

Removal Rates

Total suspended solids removal: 91%
Total metals (dissolved): 63%
Total metals (particulate): 68%
Total metals (dissolved and sediments): 84%
Total phosphorous removal: 76%
Total nitrogen removal: 58%

Product Range

300 Series
(1.8m internal diameter):
Treatment Flow: 1.47 – 8.4 l/s

400 Series
(2.6m internal diameter):
Treatment Flow: 8.5 – 16.9 l/s

500 Series
(3.5m internal diameter):
Treatment Flow: 17 – 36.7l/s

600 Series
(4m internal diameter):
Treatment Flow: 36.8 – 48.1 l/s

Applications

As part of a treatment train in a ‘High’ Pollution Hazard Index application.
Sensitive outfalls such as SSSI’s
Fine TSS capture
Dissolved metal capture
Nitrogen and phosphorus capture

Chamber Shell Design

Designed with reference to BS EN 13121. All tank shells carry the SPEL 25 Year Warranty and life expectancy in excess of 50 years.

Chamber Shell Design

Different tank shell specifications are available dependent upon tank invert levels, ground conditions and ground water levels. See Installation in Section 7. See Installation Section.

Proven Sand Filter Performance

The uniform size silica-sand filter media provides for higher removal efficiencies than coarser types of media. SPELFilter media is inorganic – it doesn’t leach nitrogen and other nutrients.

Greater flexibility

Due to the significant surface area, designated flow path and high flow capacity, combined with the modular cartridge design, the SPELFilter system can be deployed in a number of GRP chamber sizes.
Each system is designed to optimise your specific site and local authority requirements for the highest quality stormwater.

Laboratory performance testing was carried out at field scale by both the Water Research Laboratory of the University of New South Wales and Drapper Environmental Consultants and endorsed by Chester University.

	SF 300	SF 400	SF 500	SF 600
Maximum Treated Flow l/s	8.4	16.9	36.7	48.1
Internal Diameter mm	1,800	2,600	3,500	4,000
Overall Chamber Height mm	1,600	1,900	2,500	3,000
Maximum Inlet Pipe Size dia. mm	300	450	600	750
Access Opening mm	900Ø	1,200Ø	1,200Ø	1,200Ø

The SPELFilter’s design allows for a greater life span when frequently serviced. Maintenance is broken up into three categories which include: standard inspection, general cleaning, and cartridge replacement.

Standard inspection

Standard inspections are conducted at regular intervals. A SPEL representative shall undertake all measures outlined in
Maintenance Procedure, Standard Inspection.

General Cleaning

General cleaning will need to be executed immediately after standard inspections if any of the following are detected:

Build-up of debris/pollutants within the vault greater than 150mm.
Accumulation of debris/pollutants on the outlet chamber of the SPELFilter vault
After large storm events, tidal or flooding impacts at the request of the owner.

Cartridge Replacement

As the SPELFilter ages, pollutants will inundate the cartridge and ultimately reduce the treatment flow rate. At this point, a
SPELFilter flow test apparatus will be utilised to determine if replacement cartridges are required.
The life span of the SPELFilter can be impacted if standard inspections and general maintenance are not undertaken
in accordance with this operation and maintenance guide. Other factors that will affect the life span of the SPELFilter
include, but are not limited to:

Installation of cartridge system during construction phase and impacted by construction sediment loads.
Neglecting to install a primary SuDS treatment device such as a SPEL ESR System.
Unforeseen environmental hazards affecting the SPELFilter functionality.

Operation

Request A Quotation

For further information phone our sales hotline 01743 457977 or email sales@spelproducts.co.uk