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Community & Commercial| PuraMax MBBR | ||
The PuraMax Moving Bed Biological Reactor (MBBR) system is the product of extensive research and development that is designed to achieve high quality effluent within a reduced overall footprint. The PuraMax is engineered specifically for the community and commercial wastewater treatment market with an emphasis on reliability and ease of maintenance.
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The Moving Bed Biological Reactor Process
| The PuraMax system utilizes a septic tank followed by an attached growth activated sludge process which uses plastic media to provide an extended surface contact area for the bacteria to attach. The bacteria operate in an aerobic environment. An aeration grid located at the bottom of the reactor supplies oxygen to the biofilm along with the mixing energy required to keep the plastic biocarriers suspended and completely mixed within the reactor ensuring good contact between the bacteria and the wastewater. The treated wastewater flows by gravity to a clarifier to separate the solids from the clarified wastewater. Excess solids can be either returned to the septic tank or pumped to a sludge holding tank. |  |
High Quality Effluent Performance
The high removal efficiency of the PuraMax system results in excellent final effluent quality. Phosphorus and nitrogen reduction can be incorporated into the basic design. The PuraMax can also be provided as a pretreatment stage for high strength wastes or can be adapted as a post anoxic tank for denitrification.
1 Ammonia reduction can be incorporated into the standard design
2 With recirculation or a post anoxic reactor
3 With a chemical dosing system
| Treatment Performance | |
| Parameters | Typical Values |
| BOD5 | <15 mg/l |
| TSS | <20 mg/l |
| Ammonia | <5 mg/l1 |
| Total Nitrogen | <10 mg/l2 |
| Phosphorus | <1mg/l3 |
| The PuraMax System | |
The PuraMax process is based on the use of specially designed plastic media which act as biomass carriers providing a very large surface area for the bacteria to attach. This large surface area allows the PuraMax to be designed in a very small footprint compared to traditional activated sludge processes saving capital costs and saving operating costs through a lower process air requirement. The bacteria collect in a thin biofilm on the surface of the plastic media. Microorganisms in a biofilm are more resilient to process disturbances and situations of intermittent flow making the PuraMax particularly suitable for community and commercial projects and for high strength applications. The PuraMax process does not require return activated sludge streams reducing the complexity of the plant and operation & maintenance costs. |
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| Pre-engineered Package Plants |
| PuraMax is available as a fully integrated package plant complete with septic tank and clarifier stages in a single reactor or as a range of pre-engineered modules in precast concrete, fiberglass, or steel tanks with standard sizes capable of treating flows from 1,000 to over 100,000 gpd. Systems can be located above ground or inground. A range of screening and pumping packages can be specified depending upon individual circumstances. Add-on packages for phosphorous and/or enhanced nitrogen removal are also available. Service and maintenance agreements are all part of our offering ensuring you have total service support at all times. |
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| PuraMax Example Tank Sizes | |||
| Flow (gpd) |
Aeration Tank (g) 250 mg/l BOD |
Aeration Tank (g) 5 mg/l Ammonia |
Aeration Tank (g) 2,000 mg/l BOD |
| 1,000 | 1,000 | 1,000 | 2,000 |
| 5,000 | 1,000 | 1,500 | 10,000 |
| 10,000 | 2,000 | 3,000 | 20,000 |
| 50,000 | 10,000 | 15,000 | - |
| 100,000 | 20,000 | 30,000 | - |
Benefits of the PuraMax system
Specifically designed for Community & Commercial Applications
- High quality final effluent:
- BOD < 15 mg/l (24 hour composite sample)
- BOD < 20 mg/l (grab sample)
- TSS < 20 mg/l (24 hour composite sample)
- TSS < 30 mg/l (grab sample)
- Ammonia to < 5 mg/l
- Total Nitrogen to < 20 mg/l - < 10 mg/l with a post anoxic reactor
- P removal to < 1 mg/l - Operates effectively in situations of intermittent flow
- Suitable for high strength wastewater including restaurants
- The PuraMax has been developed in-house by Bord na Mona
ensuring that the process know-how is available to the customer
without having to refer to a remote manufacturer
- Robust and stable process
- Operates effectively with shock loading & underloading
- Improves retention of nitrifiers
- Fully engineered solution backed by extensive process capability
- Proven in operation over many years
- Durable media has indefinite lifespan
- Remote monitoring and service packages offered
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