公开(公告)号：US3549012A

公开(公告)日：1970-12-22

申请号：US3549012D

申请日：1968-01-03

Applicant: CESKOSLOVENSKA AKADEMIE VED

Inventor： MACKRLE VLADIMIR ,  MACKRLE SVATOPLUK ,  DRACKA OLDRICH

IPC: B01D21/00 ,  B01D24/46 ,  B01D24/48 ,  B01D23/24

CPC classification number: B01D21/0012 ,  B01D21/02 ,  B01D21/2444 ,  B01D24/14 ,  B01D24/4631 ,  B01D2201/206

Abstract: 1,181,051. Filter bed back-washing. CESKOSLOVENSKA AKADEMIE VED. 1 Jan., 1968 [7 Jan., 1967; 5 Dec., 1967], No. 13/68. Heading BID. A filter bed F is backwashed automatically when the level of unfiltered water rises sufficiently for level monitor 13 to close filtrate outlet valve 12, whereupon siphon S 2 starts and produces suction which acts through tube 6 to start siphon S 1 , whereafter unfiltered water flows from tank 10, upwards through bed F and to waste through siphon S 2 , expanding the bed. Monitor 13 also starts a timer 9, which subsequently admits air to both siphons by opening valve 7 and stops the backwashing, opens valve 4 to discharge the first filtrate following backwashing to waste and finally closes valve 4 and opens valve 12. Tank 10 acts as a preliminary purifying stage by virtue of a sludge blanket B therein, through which water flows upwards.

公开(公告)号：US3627136A

公开(公告)日：1971-12-14

申请号：US3627136D

申请日：1970-07-01

Applicant: CESKOSLOVENSKA AKADEMIE VED

Inventor： MACKRLE SVATOPLUK ,  MACKRLE VLADIMIR

IPC: C02F3/12 ,  B01D

CPC classification number: C02F3/1252 ,  Y02W10/15

Abstract: An arrangement for biological cleaning of organically polluted liquids composed of building units including at least two substantially cylindrical horizontal bodies which are placed alongside the other, with the upper part of their mantles forming the bottom of a separating space of the cleaned liquid and of the coagulated suspension, said separating space being provided between the upper parts of the mantles of said cylindrical bodies. The cylindrical bodies communicate with each other, one of the bodies communicates with the separating space which has a trough to discharge clarified liquid.