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Process and apparatus for determining the dry matter content of a sludge and application to obtain a display and control signal
Process and apparatus for determining the dry matter content of a sludge and application to obtain a display and control signal
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机译:用于确定污泥干物质含量的方法和设备以及获得显示和控制信号的应用
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摘要
In order to provide a process and an apparatus for determining the dry matter content of a sludge and to create an application for controlling sludge dewatering which permit a reliable indirect dry matter content determination in the sludge feed stream in a simple manner, the dry matter content of the feed stream is determined from the volumetric flow rate in the outlet of the dewatering apparatus as a first parameter, the volumetric flow rate in the feed to the dewatering apparatus as a second parameter, the dry matter content in the thickened sludge outlet as a third parameter and the specific gravity of the solid sludge in the thickened sludge outlet according to the relationship IMAGE in a computing circuit. In accordance with the apparatus, inductive flow meters are used to measure the volumetric flow rates. A display and control signal is also obtained from this which can be used for the metered feed of flocculants to a sludge to be dewatered, the rate of flocculant addition being changed in accordance with the signal.
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