JPS58143810A - Apparatus for washing filter chamber in waste water purification apparatus - Google Patents

Abstract

PURPOSE:To provide the titled efficient apparatus simple in constitution, constituted by mechanism wherein purified water obtained by filtering purified waste water is introduced into the lower part of a filter chamber from a washing water supply pipe through a three-way opening and closing valve and raised along with jet air to wash a filter material. CONSTITUTION:In a waste water purification apparatus wherein waste water introduced from a waste water storage chamber 6 by a raw water pump 11 is supplied to an electrolytic purification chamber 15 to separate and remove impurities (a) therein by electrolysis while the obtained partially treated water is introduced into a filter chamger 16 through a separation chamber 28, a waste water pipe 36 and a flooding tank 34 to finally remove fine mixed substances by a filter material and the obtained purified water is flowed into a purified water tank T from a water introducing pipe 44, in washing the above mentioned filter mateial 39, a purified water pump 2 is operated while the opening and closing valve 51 of a washing water supply pipe 3 is closed to supply the purified water to the lower part of the filter chamber 16 through a branched pipe 45, a three-way opening and closing valve 46 and a water introducing pipe 44 and air supplied from a pressure air source 4 is further introduced from a jet pipe 40 to wash the filter material 39 in a floated state while washing waste water is discharged to a waste water sump 7 through a discharge pipe 49.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device for a filtration chamber in a wastewater purification device that purifies and reuses wastewater.

Conventionally, wastewater purification devices are known that purify and reuse wastewater after washing for the purpose of saving water. This J: 5 equipment generally separates and removes impurities such as detergents, dust, and oil components mixed into wastewater using an impurity separator, and then separates and removes fine particles remaining in the wastewater using a filtration device. It looks like this. By the way, the filtration device is housed inside the filtration device, and therefore, it is necessary to periodically clean the filtration tray, but conventionally, there has been no efficient cleaning means for such filtration.

The present invention has been made in view of the above-mentioned circumstances, and is a filtration chamber cleaning device in a wastewater purification device with a simple configuration, which uses a part of the equipment of the wastewater purification device to automatically and efficiently wash the filter medium. The main purpose is to provide

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Fig. 1, wastewater purification device C is installed on the installation surface,
Under the installation surface on one side of the device C (left side in Figure 1) is a pit (P) for storing unpurified wastewater and impurities after separation.
A clean water tank 1' is installed on the other side of the septic tank C to store clean water after purification. A fresh water inlet 1 is opened in the clean water tank T, and this water inlet 1]
1, fresh water can be replenished into the clean water tank T.

A cleaning water pump 2 is housed in the clean water tank T, and a cleaning water supply pipe 3 is connected to the discharge port of the pump 2.

The interior of the pi'pp is divided by a partition wall 5 into a wastewater storage chamber 6 and a wastewater reservoir I, and the inside of the wastewater storage chamber 6 is further divided by a primary filter 8 into a first chamber 61 and a second chamber 62. A secondary filter 9 is provided inside the bit 6□, and a suction pipe 10 connected to the suction port of the raw water pump 11 is connected to the filter 9.
By primary.

After being secondarily filtered, it is sucked up by the raw water pump 11.

Next, we will mainly discuss the internal structure of the wastewater purification device C of the present invention.
This will be explained with reference to Figures 4 to 4.

The interior of the septic tank 13 is divided into an electrolytic purification chamber 1 by a vertical partition wall 14.
5 and a filtration chamber 16. In the upper part of the electrolytic purification chamber 15, an electrolytic cell 18 made of an insulating material such as vinyl chloride resin and open at the bottom is provided, and inside this electrolytic cell 18,
Multiple positive electrode plates 191.19. ...and cathode plate 19□
, 19□, . . . and 5- are arranged side by side alternately at appropriate intervals to accommodate the electrolytic electrodes 19. An aluminum plate is used as the positive electrode plate 191, and an aluminum plate or a stainless steel plate is used as the negative electrode plate 192. The upper surface of the electrolytic cell 18 has an opening ζ, and the lower surface thereof is formed with an injection chamber 20 for unpurified wastewater that communicates with the inside of the electrolytic cell 18, and the bottom wall of this injection chamber 20 is opened with a tapered heavy object drop port 21. be done.

In the injection chamber 20, a waste water injection device S is provided so as to be biased to one side (the right side in FIG. 3) with respect to the vertical center line LL of the electrolytic cell 18. This device S is arranged approximately horizontally.
The ejection pipe 22 has a large number of ejection ports 23 opened toward the inside of the electrolytic cell 18 . The upper end of a water pipe 24 is connected to the middle part of the jet pipe 22.
The discharge port of the raw water pump 11 installed below the electrolytic cell 1B is connected to the check valve.

-〇- The raw water pump 11 is provided with an on-off valve 26 for draining water. The suction pipe 10 is connected to the suction port of the raw water pump 11, and the other end of the suction pipe 10 is opened into the second chamber 62 in the pit T. An ejector 25 is interposed in the middle of the water pipe 24, and an air introduction pipe 27 that opens to the atmosphere is connected to the ejector 25. Therefore, when the raw water pump 11 is driven, the waste water in the second chamber 62 is sucked up and sent to the water pipe 24 under pressure. It is sucked in and mixed into the wastewater, and the ejection pipe 22
Bubbles are ejected from the fountain [123] along with waste water.

In the septic tank 13, a separation chamber 28 is in contact with the electrolytic tank 18.
This separation chamber '28 is partitioned by a partition wall 29 formed by one side wall of the electrolytic cell 18. A weir 30 is formed at the upper end of the partition wall 29, and the aggregated impurities α in the electrolytic cell 18 overflow into the separation chamber 28 through this weir 30.

Further, an impurity receiving tank 31 is provided in the upper part of the separation chamber 28 so as to face the weir 3o.
Separated floating impurities in the overflowing wastewater flow into this impurity receiving tank 31 and are stored therein. A discharge pipe 32 is connected to the bottom wall of the impurity receiving tank 31.

The bottom wall 13a of the septic tank 13 is formed into a funnel shape, and its lower end is connected to another discharge pipe 33, and the end of this discharge pipe 33 is provided with an on-off valve 33'.

As clearly shown in FIG.
4, an inlet 35 is opened in the overflow tank 34, and the upper end of a waste water pipe 36 is connected to the inlet 35. The waste water pipe 36 extends downward within the separation chamber 28, and its lower end opens into the lower portion of the chamber 28.

As shown in FIGS. 2 and 4, on three sides of the overflow tank 34, a concave reverse flow path 37 is cut out in the upper edge of the partition wall 14 at a level higher than the peak 30α of the weir 30, At the lower edge of this reverse flow path 37, an electrolytic cell 18 and a filtration chamber 1 are provided.
A rectifying guide plate 38 is provided astride between the filtration chamber 16 and the electrolytic cell 18. It allows for reflux to flow inside.

A granular filter medium 39 is housed in the lower part of the filtration chamber 16, and the filter medium 39 has three layers consisting of an upper layer, an intermediate layer, and a lower layer.The upper layer and the lower layer are made of coarse filter medium, and the intermediate layer consists of a denser filter medium. At the upper and lower intermediate parts of the filter medium 39, there is an air jet pipe 4 having a large number of blowholes.
0 is inserted, and this air jetting pipe 40 is connected to a pressure air source 41 such as an accumulator through an on-off valve 42, and can jet pressurized air into the filter medium 39 as necessary. An outflow port 43 is opened in the lower part of the filtration chamber 16, one end of a water conduit 44 is connected to this outflow port 43, and the other end of this water conduit 44 is opened into the clean water tank T. A branch pipe 45 branched from the middle of the washing water supply pipe 3 connected to the washing water pump 2 is connected to the middle of the water guide pipe 44, and a three-way opening/closing valve 46 is provided at the three-pronged connection part. Branch pipe 4
A check valve 47 is connected in the middle of the cleaning water supply pipe 5, and this check valve 47 allows water to flow from the washing water supply pipe 3 to the water conduit pipe 44. An on-off valve 48 for draining water is attached to the lower part of the water conduit 44. An on-off valve 51 is interposed in the washing water supply pipe 3 on the downstream side of the branch pipe 45 . A drain pipe 49 communicates between the upper part of the filter medium 39 of the filter chamber 16 and the waste water reservoir 1, and a cylinder valve 50 is interposed in the middle of the drain pipe 49. M10- In the drain pipe 4.9 downstream of the cylinder valve 50,
A discharge pipe 32 communicating with the impurity receiving tank 31 is connected.

In the figure, 52 is a control panel, and 53 is a viewing window.

Next, the operation of the embodiment of the present invention will be explained.

■ By driving the raw water pump 11, inside the wastewater storage chamber 6,
The cleaning wastewater containing detergent and aqueous wax passes through primary and secondary filters 8 and 9 to remove coarse substances, dust, and the like, and is then sucked into the septic tank 13.

■ The pressurized wastewater from the raw water pump 11 is forced to pass through the water pipe 24 to the jet pipe 22 of the waste water injection device S, but at this time, the ejector 25 releases atmospheric air from the air introduction pipe 27 into the water pipe 2.
The gas is sucked into the electrolytic cell 18 and mixed into the pumped wastewater, forms bubbles, and is ejected together with the wastewater toward the electrolytic cell 18.

(2) The pressurized wastewater passes through the gap between the positive electrode plate 191 and the negative electrode plate 192 and rises inside the electrolytic cell 18 as the bubbles rise. By the way, during this rising process, anionic surfactants such as detergents mixed in the wastewater are removed from the positive electrode plate 19. In addition, cationic surfactants such as oil components mixed in the wastewater are attracted to the negative electrode plate 19□, and the detergent and oil components are attracted to the cathode plate 19□ by aluminum hydroxide generated from the aluminum electrode plate. It coagulates with impurities, and the coagulated impurity α floats to the surface of the water as the bubbles in the wastewater rise.

On the other hand, heavy impurities pass through the drop port 21 under the electrolytic tank 18 and settle under the septic tank 13.

■ Detergents, oil components, and other coagulated impurities (a) that have surfaced on the water surface of the electrolytic cell 18 are mixed with air bubbles and are transported to the first and third layers by the upward flow in the electrolytic cell 18 together with the waste water in the upper layer of the electrolytic cell 1B.
It is pushed to the left in the figure, overcomes the weir 30, and flows into the separation chamber 28. In the separation chamber 28, the flocculated impurities a floating on the waste water flow into the impurity receiving tank 31, and the flocculated impurities a that could not be floated in the electrolytic cell 18 are also secondarily separated and converted into impurities. Flows into the receiving tank 31, and the nuclide 31
The pill-P is then passed through the discharge pipe 32 and the drain pipe 49.
The wastewater flows into the wastewater reservoir 7 inside the tank, and from there it is disposed of via an oil-water separation tank (not shown) or the like.

(2) Impurities heavier than the waste water gradually settle in the separation chamber 28, and the precipitated impurities are discharged to the outside by opening the on-off valve 33'. As clearly shown in FIG. 3, the air jet pipe 22 is arranged on the side away from the separation chamber 28 (the right side in FIG. 3) with the vertical center line LL of the electrolytic cell 18 as the boundary. Therefore, the flow of waste water in the electrolytic cell 18 becomes a unidirectional flow toward the separation chamber 28, and the impurities on the electrolytic cell 18 are transferred to the impurity receiving tank 3.
1, and the impurities can be efficiently separated.

■ The wastewater from which impurities have been separated as described above in the separation chamber 28 gradually descends, ascends the wastewater pipe 36 that opens at the bottom of the separation chamber 28, flows into the overflow tank 34, and overflows the nuclide 34. It flows down into the filtration chamber 16.

■ The wastewater in the filtration chamber 16 passes down through the filter medium 39 and finally, fine contaminants are separated and removed, and then the wastewater is passed through the water conduit pipe 44,
The water then flows into the clean water tank T through the three-way opening/closing valve 46, and is supplied to the cleaning water supply pipe 3 by driving the clean water pump 2 to wash appropriate objects to be washed.
'If wastewater purification is continued as described above, the filter medium 39 in the filtration chamber 16 will become clogged. In such a case, the clogging will be automatically removed by the following action.

14- ■ After closing the on-off valve 51 and switching the three-way on-off valve 46,
The cylinder valve 50 is opened and the water on the filter moon 39 in the filter chamber 16 is discharged.

■ After draining is finished, close the cylinder valve 50 and drive the clean water pump to pump the water in the clean water tank T through the water conduit 44 and into the filter medium 39 from the bottom, and at the same time close the on-off valve 4.
By opening the valve 2, pressurized air in a pressure air source 41 such as an accumulator is injected into the filter medium 39 through the air jet pipe 40. The filter medium 39 is washed in a floating state by the pressurized upward flow of the washing water and air.

Before the filtration chamber 16 becomes full of water, the drive of the clean water pump 2 is stopped to stop the supply of water, and the on-off valve 42 is closed to stop the supply of pressurized air.

(2) After waiting for the floating filter medium 39 to sink, the cylinder valve 50 is opened, and the impurity-containing water in the filtration chamber 16 is discharged through the drain pipe 49.

C) Repeat the operations ① and ① several times.

■ When the drainage is finished, close the cylinder valve 5o, stop the air supply, and operate the clean water pump 2 again to fill the filtration chamber 1.
Only washing water is injected into the filter 6 to push up impurities on the filter medium 39 upwards, and push out air remaining in the filter medium 39 upwards to prepare the filter medium 39. At this time, filtration chamber 1
The cleaning water flowing into the filtration chamber 16 passes through the reverse flow path 37, overflows the filtration chamber 16, is guided by the rectification guide plate 38, and flows into the electrolytic cell 18.
Floating impurities that flow into the tank 18 and remain without being discharged are driven into the impurity receiving tank 31 and discharged.

(2) Stop the operation of the clean water pump 2, and drain the water remaining on the filter medium 39 through the opened cylinder valve 50.

■ Next, close the cylinder valve 50.

■Finally, open the on-off valve 51 and switch based on the three-way on-off valve 46 to complete the entire work.

Of the above-mentioned operations, steps (1) to (2) can be automatically performed by the electric control equipment in the control panel 52.

As described above, according to the present invention, the clean water pump 2 for pumping clean water to the object to be washed, the clean water tank T, and the filtration chamber 1
Since the filter medium 39 in the filtration chamber 16 can be automatically washed using the water conduit 44 connecting the filter medium 39 with
It is possible to prevent clogging of the filtration chamber 16 and ensure efficient filtration at all times, and there is no need for manual maintenance of the inside of the filtration chamber 16, and furthermore, the overall configuration of the filtration chamber cleaning device can be simplified. can.

In addition, an air jet pipe 40 connected to a pressure air source 41 is inserted into the filter medium 39 in the filter chamber 16, so that pressurized air is injected into the filter medium 39 together with washing water.
9 can be washed in a free state, the cleaning effect of the filter medium 39 can be significantly enhanced, and the cleaning can be carried out quickly.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic side view of the device of the present invention, FIG. 2 is a vertical sectional front view of the main part of the wastewater purification device, FIG. 3 is a vertical sectional side view of the main part of the device, and FIG. It is a sectional view taken along the TV line. T...Clean water tank, 3...Washing water supply pipe, 15...
Electrolytic purification chamber, 16...filtration chamber, 39...filter material, 4o
...Air jet pipe, 41...Pressure air source, 42...
Opening/closing valve, 44... Water pipe, 45... Branch pipe, 46.
... Three-way on-off valve, 49... Drain pipe, 51 River on-off valve.
゛Patent applicant: Takeuchi Tekko Co., Ltd. Procedural amendment (voluntary) June 12, 1980 1, Indication of the case 1982, Patent Application No. 23897 2, Title of invention: Filtration chamber cleaning device in waste water purification device 3, Amendment Relationship with the case of a person who makes a patent application Name of patent applicant: Takeuchi Tekko Co., Ltd. 4, Agent: 104 5, Subject of amendment Contents of amendment as shown in the attached sheet■. Page 4, line 15 of the specification: ``Washing water pump-1''...
・Correct it as "clean a) water pump"... 2. Specification, page 6, line 2, ...[Excellent electrolysis electrode-1......Toaro...
[Corrected as Electrolytic Electrode Plate Good-1...] 3. In the specification, page 10, line 7, it says ``Washing water pump.'' Correct it to ``Clean water pump.'' 4. In the specification, page 13, line 12, ...[Air-1...] is corrected to..."pressurized wastewater"... 5. In the specification, page 13, line 14, it says ``to''... It should be corrected to ``to''... 6. Specification, page 15, line 5, 1-..."Clean water pump"......
“Clean water pump 2”... Corrected. 7. In the specification, page 15, line 8, the words ``accumulator, etc.'' should be deleted. 8. Specification page 15, line 10, page 16, line 7, 18
In the first line of the page, ``Clean water''... Correct the word ``Clean water'' to ``Clean water''. 9. In the specification, page 16, line 11, it says... “Cleansing that flowed into”...
・[If it is filled with clean water, it becomes clean]... Correct. 10. In the second line of page 18 of the specification, the statement ``free state'' is corrected to ``floating state''. 11. Lines 6 to 9 of page 18 of the specification are corrected as follows. -2~ "Figure 1 is an overall schematic side view of the apparatus of the present invention, Figure 2 is a longitudinal side view of the main part of the wastewater purification apparatus, Figure 3 is a longitudinal sectional front view of the main part of the apparatus, and Figure 4 is the main part of the wastewater purification apparatus. It is a sectional view taken along the line IV-TV.'' 3-

Claims (1)

[Claims] A purification chamber (15) that sucks in wastewater and separates and removes impurities mixed in the wastewater, a filtration chamber (16) that filters the wastewater after impurity separation, and a clean water tank that receives the purified water after the filtration. (7゛), and a clean water pump (2) installed in the clean water tank (T) and configured to pump clean water to appropriate objects to be washed through the cleaning water supply pipe (3). In the wastewater purification device, a branch pipe (45) is branched in the middle of the washing water supply pipe (3), and this branch pipe (45)
into the filtration chamber (16) via the three-way on-off valve (46).
A water pipe (4) connecting the bottom of the tank and the top of the clean water tank (T)
4), and an on-off valve (51) is connected to the washing water supply pipe (3) on the downstream side of the branch pipe (45).
An air jet pipe (40) is inserted into the bottom of the filter 4''l' (39) housed in the filter chamber (16), and the outer end of the pipe (40) is connected to a pressure air source ( 41) has an on-off valve (
42), and the filter medium (3) of the filtration chamber (16).
9) A filtration chamber cleaning device in a wastewater purification device, which is formed by communicating a drain pipe (49) above the filtration chamber.