| 摘要 |
<p>The present invention relates to a system for purifying and filtering waste water from mechanical machining processes, either of a conventional type or not, characterized in that said system comprises a first pumping element, for taking up the waste water and at least two filtering bodies, connected in parallel to a delivery duct, through respective delivery valves. The filtering bodies are connected, through respective return valves, to a recirculation tank of the machine tool. Moreover, there are provided a second pumping element, for delivering a washing liquid, in counter-current, to the filtering bodies and ducts for discharging the washing liquid leading to a decantation tank. The pumping elements and valves are driven by a programmed logic computer. <IMAGE></p> |
