HUBER DeWaTec SBR Plant BatchPLUS®
The SBR process in the form of the HUBER DeWaTec BatchPLUS® system is a high performance small purification system that works based upon the SBR process (Sequencing Batch Reactor). Sequencing Batch means that not all of the naturally occurring amount of wastewater flows through the system, but the system rather handles determined amounts of sewage and processes each amount one after the other in purification cycles.
As usual HUBER DeWaTec does not use rotating or live parts in the wastewater - even with this technology. The transport of wastewater and sludge is carried out via pumping systems that are driven by compressed air (airlift pump). The compressed air is provided by a compressor that also supplies the air for the biodegredation process. The compressor is located in a soundproof control cabinet together with a microprocessor control unit. The control cabinet complies with all relevant German and European Standards and is supplied with a plug.
The system mainly consists of a mechanical treatment stage with buffer effect and the downstream bioreactor.
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The mechanical purification stage assumes the following tasks:
- The raw wastewater loaded with coarse material flows into the system by gravity. In this first stage, the coarse material will be separated by sedimentation.
- In addition to this, the separated material will be stored together with the excess sludge from the biological process here.
- Furthermore, a part of the first stage will be used as a buffer area. The buffer is designed to store the wastewater that flows in during the SBR cycle. The size of the buffer is defined by a simple storage measurement allowing for the usual dispersion of sewage flow over the course of the day including a surge of bath water. In order to exclude backwater building up in the inlet pipe during a hydraulic overload, the separating plate is provided with an emergency overflow between the first stage (mechanical purification, sludge storage and buffer) and the second stage (bioreactor).
A unique characteristic of the SBR Technology is the fact that the biological purification and final sedimentation of the wastewater takes place in one area after the mechanical treatment of the raw wastewater has taken place. The processes take place one after the other in regularly occurring cycles. According to the factory default settings, the duration of one cycle takes 6 hours. This equates to 4 cycles per day.
For more detailed information please visit the HUBER DeWaTec website under
www.huber-dewatec.de.
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Benefits
Advantages of the HUBER DeWaTec BatchPLUS® Process
The HUBER BatchPLUS® process has been specially developed for use in the decentralized wastewater treatment. Here are some of the advantages of this system:
- Extremely high level of purification performance and is also future-proof thanks to the HUBER Kit System. The BatchPLUS® process can also be individually customised to all requirements via updates.
- Safe nitrogen and phosphorus removal in accordance with the survey carried out by the RWTH Aachen Testing Institute for Wastewater Technology GmbH (PIA).
- Safe operation, even when dealing with longer “under-load” conditions due to the specially developed NLK process.
- Highest level of energy efficiency via inflow controls and automatic holiday operation mode.
- Clear water discharge that is free of solids thanks to the NoSolids-System in accordance with the Dutch Van Hall testing Institute.
- Safe containment of the minimum activated sludge volume in the reactor and the reduction of excess sludge discharge via the patented adjustable excess sludge discharge equipment.
- Safe buffering of load and hydraulic peaks.
- No moving parts and no live parts in the sewage.
The following process advantages are also to be had when using the BatchPLUS® +P components:
- Complete maintenance-free dosage system for “P Elimination”. No mechanical dosage pump technology that requires regular maintenance and calibration.
- Dosage tank fill level control with signalling in the event of a critical fill level.
- No need to lay a cable in the earth for the dosage agent.
Cycle Description
Cycle Description
Cycle description of the SBR BatchPLUS® small purification system
- Loading of the biological treatment stage:
To begin the cycle, the biological treatment stage will first be loaded with a determined amount of wastewater from the buffer (approx. ¼ of the daily amount) via an airlift pump. In practice, the determined form of loading from the buffer volume drastically reduces existing hydraulic system overloading. Concentration peaks will also be balanced due to the buffering of the sewage. The loading of the reactor takes 30 minutes to complete. The loading procedure will be ended after the set amount of time has expired or when the maximum water level in the reactor has been reached. - Biological purification process:
Then the phase of biological purification takes place in which the compressed air supply – shaped as microbubbles – periodically circulates the reactor contents of activated sludge and wastewater and provides the microorganisms with the necessary oxygen that is required for the purification process. In addition to the biodegredation of the carbon dioxide, further purification targets can be achieved with the SBR process (nitrification and denitrification). In order to achieve this, an alternation of anoxic and aerobic phases will take place during the operation. The total reaction time is divided up into aerated and non-aerated intervals. - Sedimentation phase:
After the nitrification and denitrification phases have taken place, a sedimentation phase is carried out where the stirred contents of the reactor separate into sludge and clear water phases. - Clear water discharge:
Following the sedimentation phase, the clarified water is pumped from the bioreactor and is supplied into a discharge system / drainage system. The clear water discharge phase is ended after the minimum water level in the reactor has been reached. - Excess sludge discharge:
The so-called excess sludge that is accrued from the division activities of the micro-organisms is then pumped to an upstream sludge accumulator – a part of the primary treatment – for storage. Following this, the cycle will start once again with the loading of the biological treatment stage.
In case less water than expected flows into the system and the determined inflow amount is not achieved, the system will automatically switch to the energy-saving holiday mode. As soon as the calculated inflow amount is achieved, the system will then automatically switch back to the normal operation mode. The preset operation times of the individual phases can be individually adjusted to the circumstances on site.
The control of all processes is carried out via microprocessor control unit. The air compressor as well as the magnetic valves for the airlift pumps are switched via the control outputs.
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Requests
For requests regarding this product please directly contact:
HUBER DeWaTec GmbH
+49 (0) 2365 50883-0
+49 (0) 2365 50883-11
dewatechuberde
Brassertstraße 251
D-45768 Marl
Germany
