Reusable food container supply company in southern Germany

Wastewater Treatment with ClearFox® Containerized system

Project Details

Size

20-100 m³/day

Location

Germany

Completed

2012

Project Delivery

Features

Treatment Modules

ClearFox® FBBR

ClearFox® Clarifier

Project Results

Before

After

COD

10.000 mg/l

Discussion

Situation

The existing industrial wastewater cleaning plant was installed with the activated sludge procedure (aeration tank) with secondary sedimentation chamber. The biology is assisted by adding substantial volumes of external carbon sources as substrate substitute. The large dimension reactor volume (approx. 600 m³) causes significant operational costs and problems during winter operation due to temperature. The existing aeration tank is an enamel steel tank positioned above ground. The tank is corroding and no longer fit for purpose.

Problem

The wastewater from washing processes has variable flows (20-100m3/d), may contain high carbon concentrations (up to 10.000mg/l), can contain compounds which are hard to decompose (industrial cleaner) and a has a deficit of nutrients (N,P-deficits). Due to the range of food collected in the containers it is hard to estimate in advance which substances will flow into the sewage treatment plant. Therefore, the biological stage must be rugged and possess a high self-regulatory potential. The plant must be fully automatic with a simple to operate, simple control unit.

Solution

The wastewater is already pre-cleaned mechanically through filtering by the customer, the pH value is set close to 7. Afterwards, it reaches a buffer tank, which was reconditioned as M&A with big bubble aeration. Pre-decomposition can be controlled here, the sludge must be removed. The biology is filled via a level sensor, depending on the water level and integrating via a time function. In an subsequent lamella separator, the secondary sludge is removed from the clear water.
The core component is the container based fixed-bed biology. The submerged fixed-bed is more durable than the active sludge processes because organisms with longer generation times (specialists for just this substrateJ degradation) can be grown more easily due to the fixed sedentary medium.

The wastewater production fluctuates and depends on the amount of rinsing water. Therefore, the bioreactor is divided into cascades, designed as fully blended stirring vessel, where the wastewater flows through in sequence. On the one hand, this leads to a very high cleaning capacity, and on the other hand, the plant is more resistant to underload/ overload.

Advantages

Improving operational security
State-of-the-art, decreasing operational costs
Quick construction time
High quality and pre-assembled solution with no site work

FAQ

Can this solution also be applied to my project?

Yes, our solution is modular and flexibly adaptable. Thanks to the cascade design and robust fixed bed biology, it can respond to different wastewater compositions and fluctuating volume flows. We analyze your specific requirements and adapt the technology optimally to your conditions.

How reliable is compliance with the discharge values?

Our sewage treatment plants are designed to provide high purification performance even with fluctuating inflows. The biological fixed bed technology ensures stable wastewater treatment, so that the discharge values are guaranteed to be maintained.

How easy is the system to operate?

The controls are intuitive and easy to understand even for untrained personnel. We also offer maintenance training so that your team can operate the system efficiently.

Can the wastewater treatment plant be expanded if my production volumes change?

Yes, our modular concept allows for easy expansion of the system. If your requirements change, additional modules can be integrated.

How long does installation and commissioning take?

Since the sewage treatment plant is delivered pre-assembled, installation is quick and straightforward. Commissioning usually takes place within a few days, depending on the site conditions.

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