AUTOMATIC SEDIMENTATION CONTROL - CONVES
The "Conves" system is designed specifically for the automatic control of the sedimentation rate using highly reliable fibre optic elements, avoiding any mechanical devices.
The Assembly is integrated into a perfectly protected box, usually installed on the bridge of the clarifier tank, next to its control cabinet. The connection to the flocculant pump drive motor connection is done through this control cabinet, incorporating a frequency converter for the variable speed control of the pump.
The selection of the components in its construction, has allowed AMP to develop a system of high reliability and accuracy. Its unique design, combined with a control system operated by means of a small PLC, incorporates a computer program developed specifically for this process, which has resulted in a simple and reliable control system that ensures an optimal control of the sedimentation-clarification process, minimizing the consumption of flocculant, with consequent economic savings
The operation of the "Conves" system is based on regular periodic measurement of sedimentation speed by means of a test carried out in a test tube, similar to which is made in the laboratory, but carried out "online" within the system, comparing the value measured with that of a control "set-point" which is set in the system. If the speed obtained is higher or lower than the set value, the “Conves” system will decrease or increase the dosage of the flocculant to the decanting equipment, maintaining the sedimentation rate within the optimum parameters for the sedimentation process being controlled.
As the control cycle time is very short, it is possible to set the execution of these cycles practically every minute, which allows precise process control by having a quick response of the system against unexpected changes.