Jewel Septic Tank Conversion Unit
The Jewel septic tank conversion unit is installed after an existing septic tank to convert it into a sewage treatment plant which can discharge, legally, directly to a ditch.
Benefits
- No New Soakaway Needed
- Direct discharge to ditch
- Simple DIY Installation
- Small, Cheap Excavation
- Saves Thousands of pounds on the drainfield installation
- Makes current septic tank to ditch discharges LEGAL
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| Effluent sample before the Jewel was installed |
Effluent sample after the Jewel was added to the septic tank |
The JEWEL meets the new EU wastewater standards for direct discharge to a watercourse. This is a high quality fibreglass septic conversion tank, manufactured in the UK. The JEWEL septic tank conversion unit can also be used after a sewage system that is failing to meet the consent to discharge standards as well as solving your septic tank problems.
Checklist
| Electricity required |
Only 80 watts |
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Emptying Interval of the septic tank
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1 to 2 years
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Primary tank
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NO (septic tank is the primary tank)
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Internal moving parts
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NO
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| Performs during intermittent use (holiday lets, etc.) |
YES |
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Concrete backfill
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YES
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Visually intrusive (large lids, kiosk, etc.)
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NO
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Expensive servicing
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NO
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Warranty period
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25 years
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Easy Installation
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YES
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The JEWEL converts septic tanks to full sewage treatment systems by treating the dirty water coming out of the septic tank.
BENEFITS of the JEWEL Septic Tank Conversion unit
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Manufactured from 8mm. thick fibreglass - improved frost and corrosive properties
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NO restrictions with this sewage system on items flushed down the toilet. The septic tank intercepts all tampons, panty liners, make-up remover pads, cotton buds, nappy liners, etc. which cause problems in many sewage treatment units. This makes the JEWEL sewage system very useful for Holiday Lets and Rental properties.
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Extremely low system running costs - from only 80watts, equivalent to a very small lightbulb
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NO internal electrical or mechanical moving parts - NO biodiscs, bearings, belts, motors to replace
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Low maintenance costs. One service per year and emptying of the septic tank only
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Small footprint - only a small lid flush with the ground
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Easy to install - only 1.20 metres wide, 2.20 metres deep and weighs 190kgs
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Optional inlet and outlet dimensions
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Converts septic tank effluent into very high quality final effluent
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Differing invert levels are accommodated
Download the JEWEL BROCHURE by clicking on it
How the JEWEL Septic Tank Conversion Works

The JEWEL septic tank conversion unit works by blowing air via a small compressor, through media in its first chamber, the biozone. This aerates the sewage and causes aerobic bacteria to grow on the media which then digest the organic matter. As sewage flows into the biozone from the septic tank, cleaned wastewater flows from the biozone to the final settlement chamber in the JEWEL septic tank conversion unit before discharge through the outlet pipe. An air-lift, operated by the compressor, returns any sludge back to the biozone in the Jewel so there is never any need to empty the JEWEL.
Specifications of the 6 and 12 person JEWEL septic tank conversion unit
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High quality 8mm. thick G.R.P. tank Construction 2200mm(H) X 1200mm(W)
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Standard Inlet Invert 1005mm (suits most septic tank outlets)
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Standard Outlet Invert 1095mm
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Larger than required Media Bed in Aeration Chamber 100m2 (BS 6297 standard is only 90m2 for 12 persons)
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External Compressor Blower from only 60w
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Pedestrian Duty Manhole Cover
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Designed to Treat Effluent to BS6297:1983 Standard 20:30:20
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Pumped Outlets Available
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Airlift Pump Activated Sludge Return back to the biozone
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Micron Filters
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110mm Pipework to British Standard
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High Performance Bubble Diffuser
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Invert Risers Available
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By utilising the existing septic tank the process allows a high filtration of suspended (heavy) solids from entering the biological aeration chamber
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The biological aeration chamber incorporates a media bed larger than most 12 population sewage treatment plants. The BS9267 states 90m2 of media surface area. The Jewel provides over 100m2.
Servicing for all Jewel sewage systems is through Sapphire Environmental Ltd, sewage treatment plant service and maintenance
Technical Specifications - JEWEL Septic Tank Upgrade BS:6297:1983
| Jewel Model |
Septic Tank (L) |
No. of Tanks |
Dimensions (mm) |
Inlet invert (mm) |
Outlet Invert (mm) |
Flow (L) |
Watts (W) |
| 6 |
2700 |
1 |
1200D x 2200H |
1005 |
1095 |
1200 |
60 |
| 12 |
2700 |
1 |
1200D x 2700H |
1005 |
1095 |
2400 |
80 |
| 20 |
3800 |
1 |
1650D x 2200H |
700 |
775 |
4000 |
120 |
| 25 |
4800 |
1 |
1650D x 2200H |
700 |
775 |
5000 |
150 |
| 35 |
5800 |
1 |
1650D x 2700H |
700 |
775 |
7000 |
200 |
| 50 |
10000 |
2 |
1650D x 2200H
|
700 |
775 |
10000 |
250 |
| 70 |
12500 |
3 |
1650D x 2200H
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700 |
775 |
14000 |
400 |
* Pumped outlets available
Prices
Jewel 6 £2000 Plus VAT
Jewel 12 £2150 Plus VAT
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Please click on Septic Tank Conversion for other systems
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