| 摘要 |
<p>The present invention relates to a water purification apparatus for purifying the working water, which contains foreign substances, discharged from a drilled hole during drilling. The water purification apparatus comprises: a settling water reservoir for storing the working water and having a storage space for the settling of the foreign substances contained in the working water; a transfer unit installed in the settling water reservoir so as to unidirectionally transfer the foreign substances that have settled in the settled water reservoir; a discharge unit for discharging the foreign substances transferred by the transfer unit to the outside of the settling water reservoir; and a drain pipe which is installed at a point upwardly spaced apart from the bottom surface of the settling water reservoir, which has a water inlet port for feeding the working water, from which the foreign substances have been removed by means of the settling, into the drain pipe, and which discharges the fed-in work water to the outside of the settling water reservoir.</p> |
