KR20030058803A - Simple waterworks filtration device - Google Patents

Abstract

PURPOSE: A filter device for small scale waterworks is provided, in which influent water tank(9), filtering tanks(15,16,17) and final filtering tank(18) are arranged, and in the filtering tanks(15,16,17) three layers of sand, coarse sand and gravel are stacked in each filtering tank, so that the filtering device exhibits excellent filtering efficiency, thus enabling the system to be suitably used for small scale waterworks. CONSTITUTION: The filter device comprises a main body(1) composed by influent water tank(9) equipped with a fine screen(10), final filtering tank(18) formed by filter, an overflow tank(40) and two sludge discharge holes(43,44) set at the both sides of the bottom; filtering tanks(15,16,17) partitioned by partition walls(12,13,14) to form under flow and over flow and filled with multi-layers of gravel layer(34,35,36), coarse sand layer(31,32,33), fine sand layer(28,29,30) on filtering nets(25,26,27), wherein middle plates(11) are installed beneath the filtering net(25) providing a plurality of water passages(19,20,21,38) and backwashing spray pipes(22,23,24), a scum discharge pipe(53) for discharging floating foreign material formed by backwash to scum suction line(50,51,52).

Description

Simple waterworks filtration device

The present invention relates to a simple tap water filtration device for supplying drinking water in farms and fishing villages, islands or small and medium cities with poor water purification facilities or water purification facilities.

In general, filtration devices in farming and fishing villages or small and medium-sized cities include bilayer rapid filtration paper using sand and anthracite, or rapid filtration paper using activated carbon. The backwashing method is known to combine both backwashing and surface washing using only backwashing water and backwashing using water and air together.

However, the use of the above backwashing water alone for both ◎ washing and surface cleaning is not good in backwashing efficiency, and the result of washing with water and air together is due to excessive mixing at the anthracite interface after the installation of double media. Precision filtration is deteriorated and there is a problem that excessive power is used because blower and pump are used at the same time. Also, sand filter using sand is used as advanced processing technology. Depending on the type of inflow, only the upflow type may cause the trouble of frequent backwashing due to the blockage of the filter paper, and there is a problem in that the filtration function due to the fault flow is reduced.

Accordingly, an object of the present invention is to form a multi-layered multi-layered filtration layer, such as sand and gravel, and to simultaneously pass down and upstream flow paths to reduce the surface blockage of the filtration layer, to improve the filtration function, and to absorb air into the pump pipe. By attaching the device, water and air flow in at the same time to improve the backwashing efficiency, minimize the power, and after the backwashing, scum that floats after powering up is discharged to the outside by the water head car and scum removing device to increase the efficiency of backwashing and safe drinking water. It is to provide a simple tap water filtration device to be supplied.

The simple tap water filtration device providing the object described in accordance with the present invention comprises a multi-stage longitudinally forming a filtration chamber consisting of a partition wall and a support plate in a body having a manhole made of unsaturated polyester resin and a cleaning passage. After installing a plurality of water collectors, backwash water pipes and filtering net on the supporting plate of the fruit, multi-layer filtration by laminating the fine sand, coarse sand and gravel up and down on the upper surface of the filtering net, and on the inlet side of the first filtration tank by a fine screen, A final filtration tank is formed on the drain side, and a scum removal tube is installed in each filtration tank to remove suspended substances during back washing, which will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of the present invention.

Figure 2 is a longitudinal cross-sectional view of the present invention.

** Description of symbols for the main parts of the drawing **

1: main body. 2,3,4: manhole. 5,6: Cleaner.

7: Inlet. 8: Filtration drain 9: Inlet tank.

10: Fine screen. 11. Middle plate. 12,13,14.

15: First filtration. 16: Second filtration. 17: Third filtration section.

18: Final filtration tank. 19, 20, 21, 38: water collector. 22,23,24: Backwash water injectors.

25, 26, 27: filtering network. 28,29,30: fine sand layer. 31,32,33: coarse sand layer.

34,35,36: gravel layer. 37: sump tank. 39: filter.

40: Overflow tank. 41: Wolyueon. 42: Chlorine feeder.

43,44: sludge outlet. 45: absorption tube. 46,47,48: Washing water supply pipe.

49: pump. 50, 51, 52: scum suction tube. 53: scum discharge pipe.

54: Scum outlet. 55: air inhaler.

Figure 1 is a longitudinal cross-sectional view of the present invention, Figure 2 is a cross-sectional view taken along line AA of Figure 1, referring to this, reference numeral 1 shows a main body made in a rectangular shape by the RTM method using an unsaturated polyester resin harmless to the human body As the upper surface of the manhole (2) (3) (4) and the manholes (2) (4) of the manholes (2) (3) (4), the cleaning holes (5) (6) are formed. The inlet (7) is connected to the filtered water drain (8) on the upper right side to form the inlet (9) inside the inlet (7) to install the fine screen (10) in the inlet (9) inlet (7) While the raw water obtained through the fine screen 10 was filtered through the foreign material was introduced into the body (1), the intermediate plate (11) formed in the inner bottom of the body (1) inlet (7) and filtered water drainage A diaphragm 12, 13, 14 is formed between (8), the first filtration tank 15 in the downflow, the second filtration tank 16 in the upstream, and the third filtration in the downflow. (17) and upstream final filtration tank (18) to form a plurality of water pumps (19) (20) (21) and backwash water in the intermediate plate (11) of each of the filtration tanks (15), (16) and (17). After installing the pipes (22) (23) (24), the filter net (25) (26) () directly above the water pipe (19) (20) (21) and the backwash water pipe (22) (23) (24) ( 27) and the fine sand layers 28, 29, 30 and the coarse sand layers 31, 32, 33, and the gravel layers 34, 35, on the upper surface of the filter net 25, 26, 27 36) to form a multi-layer filtration layer by sequentially stacking in a multi-layered direction from top to bottom, the fine sand layer (28, 29, 30) has an effective diameter of 0.45 ~ 0.7mm, equality factor 17 or less, and coarse sand layer (31) (32) (33) are effective diameter of 0.7 ~ 1.7mm, uniformity factor of 1.7 or less, and gravel layers 34, 35, 36 are preferably filled with effective diameter of 15 ~ 20mm, uniformity factor of 1.7 or less Do. For example, if the treated water is equipped with 30cm of fine sand layer, 15cm of coarse sand depth and 15cm of gravel depth in a water purification tank of 5㎥ for 12 hours, the head of water is calculated as follows.

Raw water introduced into the water tank (9) through the inlet (7) is introduced into the first filtration tank (15) while the foreign matter is filtered by the fine screen (10) and the fine sand layer 29 and the coarse sand layer (32) and The gravel layer 35 flows down in the direction of water and is purified primarily and flows into the water collecting tank 37 through the plurality of water collectors 19, and the primary water obtained through the water collecting tank 37 is the lower space of the partition wall 12. Through the secondary filtration tank 16 through this time, the water is secondaryly purified during the countercurrent flow back upward through the condenser 20 to the gravel layer 35, the thick hair layer 32 and the fine sand layer 29 ( 13) is overflowed to the third filtration tank (17), and is purified by the third while flowing down to the fine sand layer (30), coarse sand layer (33) and the gravel layer (34) to open the lower space of the partition wall (14) Through a number of water collectors 38 and filters 39 installed on the bottom of the final filtration tank 18 through the first filtration to the final filtration tank 18 and obtained The chlorine automatic for supplying chlorine which is a disinfectant installed in the overflow tank 40 overflows the overflow stream 41 of the overflow tank 40 installed in the middle of the final filtration tank 18. Drinking water is supplied by the feeder 42 to supply drinking water through the filtered water drain 8, and sludge discharge ports 43 and 44 are formed on both left and right sides of the water collecting tank 37 to discharge the sludge. 37 to discharge the sludge in the purified water to wash the collecting tank 37, and the suction pipe 45 provided with the suction side in the overflow tank 40 together with the air suction 55 to the suction side of the pump 49 Connect the backwash water injection pipes 22, 23, 24 to the drain side of the pump 49, and the air inhaler 54 by the suction force in which the first-class water of the overflow tank 40 is sucked by the driving of the pump 49. The outside air is sucked together and the air is supplied to the wash water supply pipes 46, 47, and 48 together with water. The fine sand layer (28) (29) (30) and the coarse sand layer (31) (32) (33) are sprayed into the backwash water injection pipe (22) (23) (24) of the tank (15) (16) (17). And to clean the foreign material of the gravel layer (34, 35, 36) to be floated on the water surface of each filtration tank 15, 16, 17 by the cleaning operation, the filtration tank (15) (16) (17) The scum suction pipe (50) (51) (52) is installed on the scum suction pipe (50) (51) (52) is connected to the scum discharge pipe (53) to which a separate pumping force is applied to each filtration tank (15) ( 16) (17) sucks foreign matters raised on the surface of the water into scum suction pipes (50), (51) and (52) and discharges them through the scum discharge pipe (53) and scum discharge port (54) to the outside for each filtration tank (15) (16). (17) is designed to backwash.

As described above, the present invention includes a water tank 9, a first filtration tank 15, a second filtration tank 16, a third filtration tank 17 and a final filtration tank 18 formed in the main body 1 in multiple stages. And the fine sand layers 28, 29, 30 and coarse sand layers 31, 32, 33 and gravel layers 34, 35, 36 in each of the filtration tanks 15, 16, and 17. It is formed of a multi-layered filtration layer, which is not only superior to the single layer filtration using sand, but also to the filtration layer is superior to the filter paper with the double filter, and is used to reduce the power source for cleaning. It is very suitable as a water filtration device for supplying drinking water in urban or island regions.

Claims (1)

A main filtration tank equipped with a fine screen, a final filtration tank equipped with a filter, and a main body forming a overflow tank in the final filtration tank and forming a sludge discharge port at the lower left and right, The intermediate plate and several diaphragms are installed in the main body, and a plurality of water separators, backwash water injection pipes, and a filtering net are installed on the intermediate plate between the diaphragm and the diaphragm, and the fine sand layer, the coarse sand layer, and the gravel layer are stacked in a multi-layer on the filter net. The first filtration layer, the second filtration layer and the third filtration layer, The backwash water discharge pipes installed in the first filtration layer, the second filtration layer, and the third filtration layer are connected to a mouthpiece supply pipe connected to the discharge side of the pump, and the absorption tube installed in the final filtration tank is placed on the suction side of the pump. Connect the scum suction pipe installed in each filtration tank to the scum discharge pipe receiving the pumping drive separately. Simple tap water filtration device configured to discharge.