ATB Water English: Kleinkläranlage PUROO ® Complete

PUROO® Complete: proven technology - even greater efficiency!

Building on our PUROO® small-scale wastewater treatment plant, we have succeeded in further increasing the efficiency of biological wastewater treatment with the PUROO® Complete system. The system combines existing SBR technology with additional aeration during the primary treatment stage, thereby creating optimal conditions for a stable and reliable treatment process.

Like the PUROO® system, the PUROO® Complete system operates according to the activated sludge principle using the sequencing batch reactor (SBR) process. In this process, the pollutants contained in the wastewater are absorbed and biologically degraded by suspended microorganisms, known as activated sludge. The resulting biomass is separated from the treated water during the subsequent treatment process. The treatment cycle is water-level-controlled and thus adapts to the actual volume of wastewater generated. This allows the system to respond flexibly to varying wastewater volumes and enables operation tailored to actual needs.

Aerated primary clarification for optimized sludge treatment

A distinctive feature of the PUROO® Complete system is the additional aeration of the primary clarification stage. While in conventional systems aeration takes place exclusively in the activated sludge tank, the PUROO® Complete also supplies oxygen to the primary clarification section. This initiates a biological process in this part of the system, which has a positive effect on the properties of the resulting sewage sludge.

The continuous supply of oxygen further breaks down and mineralizes carbon compounds in the sewage sludge. This reduces the sludge volume, which can result in longer intervals between required sludge removals. At the same time, the aerated primary treatment helps prevent the formation of digester gases and acids. This significantly reduces odor nuisance and also largely minimizes the risk of acid-induced concrete corrosion.

The additional aeration in the primary clarification stage thus not only offers advantages for the treatment process but can also contribute to long-term, uncomplicated, and low-maintenance operation of the plant.

Suitable for New Construction and Retrofits

The PUROO® Complete system can be used in both newly designed tanks and for retrofitting existing tanks. In many cases, no extensive structural modifications to the existing tank are required. The system technology is designed according to the existing tank configuration, enabling flexible adaptation to the specific on-site conditions.

Thanks to its compact and practical design, the PUROO® Complete is suitable for both custom-designed small wastewater treatment plants and for the modernization of existing plants. This allows for state-of-the-art biological wastewater treatment without having to fundamentally alter the existing tank.

The benefits of PUROO® Complete

Easy handling

Both installation and operation are very simple and easy

No magnet valve

A robust ball float, specially developed by ATB, controls the air flow directly, without electrical energy – purely physical.

Low disposal costs

Sludge stabilization reduces the cost of disposing of primary sludge

Low maintenance and repair costs

Few individual and wearing parts; therefore manageable costs.

Very high cleaning performance

Even during periods of low load or peak inflow, the system adapts to the situation.

Minimal odor development

Aerated primary treatment – better sludge stabilization, less odor development

How our PUROO® Complete systems work

1 Automatic control

2 Membrane compressor

3 Air hose

4 Inflow

5 First treatment chamber

6 Partition wall with flow opening

7 Second treatment chamber

8 Pipe diffusor

9 Mechanical float valve

10 Air lift pump

11 Buffer tank with sampling

12 Clear water pipe

13 Outlet

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PUROO® Complete - modular system

ATB Modular Systems: forward-looking, flexible, and always up to date!

In addition to the pre-configured systems, the PUROO® Complete pressure-aerated small-scale wastewater treatment plant can be customized or expanded to meet individual requirements using the modular system. In three steps, this creates an optimal system for perfect wastewater treatment—with significantly enhanced treatment performance in the third step.

While the BASIS modular systems offer a practical selection of equipment components and variants, the PLUS modular system supplements the systems’ range of functions with highly convenient, state-of-the-art features and significantly enhances the treatment performance of the systems.

PUROO® Complete-BASIS-modular system

The PUROO® Complete system combines biological wastewater treatment with aerated primary treatment and is suitable both for equipping custom-designed new tanks and for retrofitting existing tanks. Depending on the tank type and configuration, the appropriate compressor capacity can be selected, and the necessary aeration elements, along with the corresponding accessories, can be installed.

The PUROO® Complete system, which is operated with just one blower, does not require solenoid valves and can be used in various tank configurations.

PUROO® Complete-modular system PLUS

Expand functionality, increase convenience, and protect the environment even more!

Combine your existing or new PUROO® Complete wastewater treatment system (1–16 PE) with a disinfection system, phosphate precipitation, and/or remote data transmission to treat your wastewater to the highest possible level of purification. All PLUS+ modular elements can be combined with one another; virtually all combinations of advanced wastewater treatment are possible with our PLUS+ modular systems.

UV-hygienization (+H)

By treating the discharged water with UV light, any remaining bacteria and germs in the treated wastewater are almost completely destroyed, allowing it to be reused, e.g. for watering the garden.

Phosphate precipitation (+P)

With the help of chemical or electrolytic precipitation, the phosphate contained in the wastewater can be reduced to a minimum and even limit values of Pges < 1 mg/l can be adhered to.