| 摘要 |
<p>The present invention relates to a kieselgur-based microfilter plate, especially for the complete disinfection of water, in which the microfilter plate (1) contains porportions of at least two siliceously bonded types of kieselgur, at least one of which is pre-calcined and subsequently burnt. The pore size of the microfilter plate is preferably of the order of 0.1 to 0.3 um so that bacteria can reliably be retained. A process making use of three different types of kieselgur and kaolin, with careful drying and subsequent burning makes it possible to produce plates with a diameter of over 35 cm and a thickness of 1 to 1.5 cm. Such plates can be easily mechanically cleaned by rotary brushes, thus providing a simply designed self-cleaning filter installation. Such filter arrangements need little maintenance, which can even be done by unskilled staff owing to the simplicity of the filter elements.</p> |
