The industrial wastewater treatment plant must run fully automatically with a simple to operate, rugged control unit. The plant must react flexibly to variable water inlets, the max. daily water volume is 180 m³.
The industrial wastewater treatment plant must run fully automatically with a simple to operate, rugged control unit. The plant must react flexibly to variable water inlets, the max. daily water volume is 180 m³.
The aeration intensity is controlled via the oxygen content. Secondary sludge is pumped to sludge dewatering. The industrial wastewater treatment plant must be simple and quick to assemble, even by third party’s staff.
Industrial wastewater treatment plant, consisting of a rough pre-cleaning and several biological reactors which can be filled in parallel, process according to the SBR process.
In the machine house, the water runs over the curved screen and then into the buffer (BU) below. A sensor (SPF1) is installed in the buffer shaft, which monitors the water level constantly, as well as two submersed motor pumps (PF1, PF2). The control unit then differentiates between three different switching states through the integration of the water level over the course of time:
1. Normal cycle
From a certain level in the buffer (BU), the alternating operation of both pumps (PF1, PF2) will start in order to maintain a normal cycle. Both bioreactors (R1 and R2) are always operated in parallel and alternating. The normal cycle of the process flow starts with the filling of each bioreactor (R1 and R2). By switching on the blower – installed in the machine house – for the corresponding reactor (V1, V2), aeration will be started at the same time as filling.
The further program flow is a sequence of aeration activation, aeration pauses and short aeration intervals to blend the sludge in the reactor (R1 and R2). During those phases, the concentration of the oxygen in the reactor is measured with a sensor installed in the reactor (SO1, SO2) and forwarded to the principal control room for checking. At the end of the normal cycle (standard duration = 6 to 8 hours), the sedimentation phase starts. All aggregates are switched off.
After one hour, the control unit determines the further program flow. When the level in the buffer (BU) has reached a sufficient height, the secondary sludge is removed after the sedimentation phase.
The secondary sludge pump (PS1, PS2) of each reactor removes a defined amount of surplus sludge and forwards it into the sludge thickener (S1, S2) active at that time after it has gone through the sludge distribution. At the same time, clearwater is removed from the reactor, the control unit activates the corresponding clearwater pump (PK1, PK2) of the reactor for that purpose.
The water level in the reactor is monitored by the sensors (SB1, SB2). As soon as the lower water level, at which the removal process stops, is reached, the pump will switch off. A new cycle with filling will start.
2. Energy saving cycle (holiday mode)
If there is not enough water in the buffer during a normal cycle in order to guarantee a complete reactor filling, the device will switch into the energy saving mode. In this case, the clearwater will not be removed from the reactor.
The water will be ventilated with the blowers (V1, V2) in the reactors with reduced power while the water level in the buffer (BU) is constantly measured. After reaching the minimum water level, the control unit will switch directly into the normal cycle.
3. Overload (infiltration)
If both reactors run in normal operation and the water level in the buffer does not decrease to the normal level within a pre-defined time, the control unit will switch automatically into overload alarm.
Advantages
Yes, ClearFox® SBR technology is flexible and can be adapted to various industrial applications. Our team will analyze your specific requirements, such as wastewater volume, pollutant load and legal requirements, to develop the optimal solution for your wastewater treatment plant.
ClearFox® SBR technology is suitable for a wide range of industrial wastewater, including food processing, beverage production, chemical, metal processing, textile industries and many more. Our system can be adapted to specific contaminant loads.
Thanks to the integrated control system and the multi-stage process flow, the system reacts flexibly to variable water inflows. The intermittent pumps and the adaptive control mechanism ensure that the system operates safely during normal operation, energy saving mode and overload.
ClearFox® SBR technology helps reduce operating costs by optimizing energy consumption, compressing sewage sludge and thus reducing disposal costs. In addition, the improved cleaning performance saves discharge fees because the legally prescribed limits are reliably met.
Yes, the ClearFox® SBR plants are state-of-the-art and meet both national and international environmental standards and discharge limits. Our team will also support you with permit planning.
