Klargester Envirosafe 34000 to 80000 (151-300 people)*
Treatment systems have to deliver high performance, but also be capable of supporting future demand, not just current level of use.
These requirements for a more flexible plant has led to the development of Envirosafe – a wholly new range of sewage treatment plant to meet the demands of today’s consumer.
- High rate performance across a range of influent and effluent qualities
- Adaptable to specific consent requirements including ‘Total Nitrogen’
- Low head loss
- Minimal footprint area
- Single piece tank for rapid installation and reduced costs
- Variable invert options
- Minimal visual impact (below ground)
- Low running costs
- May be installed in trafficked areas
- Compliant with En-12255
- Designed for applications selected in compliance with British Water Code of Practice Flows and Loads
- Low maintenance
- Alarm protected
Process Design
Envirosafe sewage treatment plants employ a plug flow combination of aerobic and anoxic processes in a fluidised bed arrangement. This operates in conjunction with an advanced system of air diffusers and selected media to deliver optimum levels of purification.
This process takes place in three distinct stages:-
- Primary Settlement
This is the initial stage of treatment and simply involves the retention of coarse solids present in raw sewage and wastewater for subsequent gradual breakdown. Envirosafe features two chambers to ensure efficient operation with a flow balancing facility. - Biological Treatment
Substantial BOD reduction takes place here, where the carbonaceous pollutants are removed by presenting the sewage to the micro-organisms in the presence of oxygen.
The treatment is achieved by high efficiency air diffusers continually pumping oxygen through the biological media and fluidised effluent. Standard Envirosafe models utilise two aerobic treatment chambers for lower performance applications. Where higher effluent standards are required, the plant employs a third anoxic zone. - Settlement
A natural by-product of biological treatment is humus sludge and this is separated for further treatment. The treated effluent is discharged via the outlet. In standard configuration Envirosafe will deliver a treatment better than 20mg/l BOD, 30mg/l S.S., with ammonia levels better than 5mg/l depending on the application. Total nitrogen consents can be achieved with this plant (contact our sales office for your application).
Flow Management
Envirosafe’s design incorporates flow management in order to both stabilise influent volume variations and to minimize hydraulic impact on the final settlement process. Such control ensures that final effluent remains at a consistently high quality.
Options
- Choice of inverts (from 0.5 to 2.0m)
- Duty and Standby blowers (as required)
- Alarm Systems
- Pumping stations
- Extension shafts (to 2.0m maximum standard invert)
- Separate sample chambers for accurate and convenient effluent sampling, as required by the relevant authorities.
Owls Hall offer a full Installation service. Please visit our Installation section for more information.
Owls Hall offer a full commissioning and after sales service involving planned maintenance visits. Please visit our servicing section for more information.
Envirosafe Technical Specifications
| Model | 34000 | 38000 | 42000 | 47000 | 55000 | 67000 | 80000 |
|---|---|---|---|---|---|---|---|
| A Overall Length (m) | 7.4 | 8.2 | 9.0 | 9.7 | 11.2 | 13.5 | 15.8 |
| B Overall Width (m) | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 |
| C Height (m) | |||||||
| 560mm Inlet / 860mm Outlet Invert* | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 |
| 1060mm Inlet / 1360mm Outlet Invert* | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 1560mm Inlet / 1860mm Outlet Invert* | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 |
| 2060mm Inlet / 2360mm Outlet Invert* | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 |
| D Diameter (m) | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 |
| Volume (m³) | 34 | 38 | 42 | 47 | 55 | 67 | 80 |
| Weight approx (kg) | 3000 | 3200 | 3400 | 3800 | 4200 | 4700 | 5400 |
| Inlet / Outlet Diameter (mm) | 160 | 160 | 160 | 160 | 160 | 160 | 160 |
| BOD 5ATU load (kg/day) | 4.5 | 6 | 7.5 | 9 | 12 | 15 | 18 |
| Ammonia (kg/day) | 0.6 | 0.8 | 1.0 | 1.2 | 1.6 | 2.0 | 2.4 |
| Maximum flow (m³/day) | 15 | 20 | 25 | 30 | 40 | 50 | 60 |
| Retention time (hrs) | 33 | 29 | 29 | 33 | 29 | 29 |
Notes:
* Extension necks can be added to turrets to achieve deeper inverts. Alternative pipe sizes may be ordered.
Weights are dry weights and installers must ensure there is no water in the tanks before lifting. All weights are approximate.
Kingspan Environmental reserve the right to alter the above dimensions without prior notice.
For temporary storage solutions click here.
Owls Hall are able to assist with the legal requirement of obtaining a consent to discharge from the Environment Agency or other regulatory body prior to installation.
*Based on the number of people in full time residential occupation
All Klargester products have a full initial 12 month warranty covering all mechanical and electrical components against malfunction, provided the unit has not been subject to damage or abuse.