Q&A

 The Wiedemann system is filterless.

The reason:

Besides mineral substances the wastewater also contains faeces, food residues, fats and cellulose. These would clog a filter, which would result in high maintenance costs and frequent work interruptions.

Therefore, we found the solution with physical water purification. Coarse materials are retained in the sludge container by a coarse separation wall, followed by the recovery process, which consists of several cleaning stages, using cyclone separators and multiple sedimentation.

For the environment:

• save up to 100% of the daily fresh water volume
• emission reduction by eliminating trips to the filling station
• by using WIEDEMANN liquid ring pumps, it is possible to work in winter without antifreeze, as no separate service water chamber is required

For the operators:

• no need to drive to the water supply point thus saving fuel and time
• continuous work without water refill – up to 4 times more work performance
• can also be used in freezing temperatures, as sewer water is used

Our system has excellent water treatment quality.

Extensive developments and years of experience confirm that neither the high-pressure pump nor other parts of the high-pressure system show more wear than while using fresh water.

No.

The water flow is fully automatic and continuously self-cleaning. The particles separated from the water in the cyclone systems are automatically transported back into the sludge tank. Additionally with the 2-tank system the sediment that separates in the individual chambers of the water tank can simply be drained or sucked into the sludge tank . Additional cleaning processes of the recycling system are not required.

The daily effort for controls and emptying takes approx. 5-15 minutes.

Sewer cleaning vehicles with water recycling in 1-Tank and 2-Tank Systems.

The quality of the recycled water corresponds to that of fresh water. Without a detectable grain size, it is ideally suited for operating high-pressure and vacuum pumps, since there is no higher wear than when operating with fresh water.

The water recycling system treats up to 4 times the volume required by the high-pressure pump. This ensures continuous operation with 4 times security.

The WIEDEMANN water recycling system does not have a filter and is therefore ideally suited for work in difficult operating conditions.

The filter-free technology is not prone to clogging.

Due to its good water quality, the recycling water is suitable for WIEDEMANN liquid ring pumps, so there is no need for a separate operational water chamber.

This has several advantages: weight savings, no cooling systems required, no need to use coolant in winter operation.

As a pioneer of water recycling, Wiedemann has managed not to make any compromises, even with the 1-Tank System. The high demands on water quality from the proven filter-free, physical Wiedemann water recycling was implemented by flow zones specially developed for the 1-Tank System. The medium is accelerated or decelerated in zones/areas provided for this purpose. This creates a controllable and highly effective sedimentation effect. The system is completed with a high-performance cyclone system for multiple centrifugations. This is what makes the WIEDEMANN 1-Tank water recycler unique and ingenious. With its water recycling system that can be sealed off completely , it is the Generalist among recyclers, which can be used quickly and easily for all kinds of work without any effort.

Due to excellent water quality, the recycling water can also be used as operational water for Wiedemann liquid ring pumps. This ensures an even operating temperature all year round for maximum suction performance. A separate operational water tank, cooler and antifreeze can thus be dispensed with in favour of payload and environmental protection.

The physical principles of gravity separation and centrifugation are most efficiently engineered in the Super 3000’s two-tank, filter-less, auger-discharge water recycler. The large, continuous, flat base of the separate water tank offers the prerequisite for maximum sedimentation. The built-in multi-chamber system accelerates the cleaning process via multiple sedimentation and exploits its high quality. High-performance cyclone systems are integrated into the cleaning cycle at several points and supplement the recycling process with multiple centrifugations. This ensures the excellent Wiedemann water recycling quality, which is unique on the market and does not show any greater wear than fresh water for the usability of the HP pump. Due to the excellent water quality, the recycling water can also be used as operational water for Wiedemann liquid ring pumps. This ensures an even operating temperature all year round for maximum suction performance. A separate operational water tank, cooler and antifreeze can thus be dispensed with in favour of payload and environmental protection.