JPS6026563B2 - wastewater purification equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wastewater purification device that purifies wastewater so that it can be reused.

2. Description of the Related Art Wastewater purification devices are known that purify and reuse wastewater after washing for the purpose of conserving water.

Such devices generally remove detergents, dust, and
After impurities such as oil components are floated to the surface in the purification chamber and separated and removed, fine particles remaining in the wastewater are further separated and removed in the sieving chamber. By the way, when separating and removing impurities rotting in the purification chamber, some of the impurities may remain on the water surface of the purification chamber, and if the remaining impurities are not removed reliably, they will gradually accumulate, dry up, and be discharged. Otherwise, impurity lumps may re-precipitate inside the purification chamber, reducing the function of the purification chamber and hastening the progress of the sarumura in the moat chamber. Therefore, in order to remove impurities, a scraping device is used or a small amount of water is allowed to overflow from the purification chamber, but in the former case, the device is large and complicated, and is also expensive. In the latter case, there is a problem that impurities cannot be efficiently removed from the entire water surface of the purification chamber.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a wastewater purification device that can reliably remove impurities floating on the water surface of a purification chamber by a simple means.

An embodiment of the present invention will be described below with reference to the drawings.
A bit P for collecting and storing used waste water used in car washing is constructed below the installation surface on which a conventionally known mobile car wash Wc is attached, and on one side of this bit P,
A wastewater purification device C is installed to purify the wastewater stored in the bit P.

Gradual accumulation of residual impurities in the filter that stores the purified clean water in the wastewater purification device C leads to a decline in the functionality of the purification chamber, so it is necessary to remove the residual impurities as appropriate. The present invention has been made in view of the above-mentioned circumstances, and is a wastewater purification device with a simple structure that can automatically wash the oak wood very efficiently and reliably remove impurities in the purification chamber. The main purpose of this invention is to provide an impurity removal device for a room washing and purifying room.

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

A bit P for collecting and storing used waste water used in car washing is constructed under the hem surface on which a conventionally known mobile car wash Wc is hemmed. A wastewater purification device C is installed to purify the wastewater stored therein, and a clean water tank T is further installed to store the clean water purified by the wastewater purification device C.
Also, a fresh water inlet 1 is closed in the clean water tank T, so that fresh water can be replenished through this inlet 1. A car wash pump 2 is housed in the clean water tank T, and a wash water supply pipe 3 connected to the discharge port of the car wash pump 2 is connected to a wash water pipe 4 of the mobile car wash Wc. 2
The clean water is force-fed to the rice bran water pipe 4 by the drive of the machine, and the clean water is spouted from a spout provided there, so that it can be used for car washing. A wastewater storage chamber 6 is formed inside the bit P by a partition wall 5.
and a drainage chamber 7.

Furthermore, the inside of the wastewater storage chamber 6 is filtered by a primary filter 8.
It is divided into a chamber 6 and a second chamber 62, and a secondary filter 9 is provided in the first chamber 6. A suction pipe 10 is connected to the suction port of a raw water pump 11, which will be described in detail later, to the secondary filter 9, and the wastewater in the bit P is transferred to the secondary filter 8,
9, the raw water is passed through primary and secondary water pump 1.
It is sucked up by 1. The upper surface of the exit of the first chamber 6 is covered with a mesh cover plate 12, on which the car wash machine Wc is placed. 2nd to 4th
Septic tank 13 in wastewater purification device C as shown in the figure
The interior is partitioned by a partition wall 14 into an electrolytic purification chamber 15 and an adjacent filtration chamber 16.

An electrolytic cell 18 made of an insulating material such as vinyl chloride resin is provided in the upper part of the electrolytic purification chamber 15, and a large number of intestinal electrode plates 19, 19. . . , and negative electrode plates 192, 192 . . . are arranged alternately in parallel at appropriate intervals. An aluminum plate is used as the intestinal electrode plate 19, 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 is a Sekiguchi, and the lower surface thereof is formed with an inlet chamber 20 for unpurified wastewater that leads into the electrolytic cell 18, and the bottom wall of this adjacent inlet chamber 20 is closed with a tapered heavy object drop port 21. Ru. Inside the Akebono entrance room 20,
Monopod from the vertical center line L-L of the electrolytic cell 16 (right side in Figure 3)
A waste water injection device S is provided so as to be biased toward the center. This device S has an ejection pipe 22 arranged substantially horizontally, and the ejection pipe 22 has a large number of ejection ports 23 extending into the electrolytic cell 18 . The upper end of a water pipe 24 is connected to the middle part of the jet pipe 22, and the lower end of the water pipe 24 is connected to the discharge port of the raw water pump 11 equipped with a check valve installed under the electrolyzer 18. 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 bit P. 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.
Atmospheric air is sucked in through the air introduction pipe 27 and mixed into the wastewater, and is ejected from the spout 23 together with the wastewater in the form of air bubbles. In the electrolytic purification chamber 15, a separation chamber 28 is formed on one side of the electrolytic cell 18 (left side in FIG. 3), and a space between this separation chamber 28 and the electrolytic cell 18 is formed by one side wall of the electrolytic cell 18. It is separated by a partition wall 29.

A weir 30 is formed at the upper end of the partition wall 29, and the aggregated impurities a from the electrolytic cell 18 overflow into the separation chamber 28 through this weir 30. Further, an impurity receiving tank 31 is provided at the upper part of the separation chamber 28, adjacent thereto and facing the weir 30, and the upper edge of this impurity receiving tank 31 is located at a higher level than the bees 30a of the weir 30. Floating and flocculating impurities a in the wastewater that overflowed the weir 30 flow into the impurity receiving tank 31 and are stored therein. A discharge pipe 32 is connected to the bottom of the impurity receiving tank 31 . The bottom wall 13a of the electrolytic purification chamber 15 is formed into a funnel shape, and another discharge pipe 33 is connected to its lower end, and an on-off valve 33' is provided at the end of this discharge pipe 33.

As clearly shown in FIG.
4, an inlet 35 is connected to 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,
Its lower end closes into the lower part of the chamber 28. As shown in FIGS. 2 and 4, above the overflow tank 34, the partition wall 14
A concave reverse flow path 37 is cut out in the upper green at a level higher than the bee 30a of the weir 30, and at the lower edge of this reverse flow path 37, there is a groove extending over the electrolytic cell 18 and the sieve chamber 16. A rectification guide plate 38 is provided, and the rectification guide plate 38 is tilted slightly downward toward the electrolytic cell 18 so that the upper water in the filtration chamber 16 passes through the reverse flow path 37 and enters the electrolytic cell 18. Allows for backflow.

A granular oak material 39 is housed in the lower part of the sieving chamber 16, and this oak material 39 has three layers, an upper layer, a middle layer, and a lower layer, and the upper layer and the lower layer are made of coarse oak material. Further, the middle layer is made of denser oak wood. An air blowout pipe 40 with a large number of air holes is inserted into the lower part of the middle layer 39, and this air blowout pipe 40 is used for accumulators, etc. It is connected to a pressurized air source 41 via an on-off valve 42, and can blow out pressurized air into the waste material 39 during washing of the washing chamber 16.

An outflow port 43 is closed at the lower part of the transition 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. Water pipe 4
4, a backflow water pipe 42 is connected, and a three-way opening/closing valve 46 is provided at the three-pronged connection part. The backflow water pipe 45 is connected to the washing water supply pipe 3 via a check valve 47.
An on-off valve 48 for draining water is attached to the lower part of the water conduit 44. An on-off valve 5 is provided in the refined water supply pipe 3 on the downstream side of the backflow water pipe 45.
1 is interposed. A drain pipe 49 is connected between the upper part of the oak material 39 of the oak passage chamber 16 and the drain chamber 7, and this drain pipe 4
A cylinder valve 50 is interposed in the middle of the valve 9. Further, a drain pipe 32 which is passed through the impurity receiving tank 31 is connected to the drain pipe 49 downstream of the cylinder valve 50. An air outlet pipe 40 that can blow out the pressurized air into the sieve material 39, a water conduit 44 that can force-feed pressurized clean water into the sieve material 39 by switching the three-way on-off valve 46, and drain the inside of the sieve chamber 16. A drain pipe 49 equipped with a cylinder valve 50 constitutes a concentration chamber washing mechanism.

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. ■ When the car wash machine Wc is in operation, a large amount of washing rice waste water containing detergent and water-based wax is blocked by the lid plate 12 made of a mesh plate and passed through the bit P.
The stored wastewater is stored in a wastewater storage chamber 6 in the interior, and after passing through primary and secondary filters 8 and 9 to remove coarse substances and dust, it passes through a suction pipe 10 to operate the car wash machine Wc. The raw water pump 11 started at the same time sucks up the raw water. ■ The pressurized wastewater from the raw water pump 11 is forced to be sent through the water pipe 24 to the jet pipe 22 of the waste water injection device S, but at this time, atmospheric air is sucked into the water pipe 24 from the air introduction pipe 27 by the ejector 25. The gas is mixed into the pumped wastewater, becomes bubbles, and is ejected toward the electrolytic cell 18 together with the wastewater.

(2) The pressurized wastewater passes through the gap between the positive electrode plate 19 and the negative electrode plate 192 and rises inside the electrolytic cell 18 as the bubbles rise.

By the way, in this rising process, the detergent (anionic surfactant) mixed in the wastewater is attracted to the positive electrode plate 19, and the aqueous wax (cationic surfactant) mixed in the wastewater is attracted to the negative electrode plate 192. The detergent and wax coagulate together with other impurities due to aluminum hydroxide generated from the aluminum electrode plate, and the coagulated impurity a rises to the surface of the water as air bubbles in the wastewater rise. On the other hand, heavy impurities pass through the drop port 21 under the electrolytic cell 18 and settle on the bottom wall 13a of the electrolytic cleaning chamber 15. ■
The detergent, wax, and other aggregated impurities (a) floating on the water surface of the electrolytic cell 18 are mixed with air bubbles and are swept away to the left in FIGS. The water flows over the weir 30 and into the separation chamber 28 . In the separation chamber 28, the flocculated impurities a floating on the wastewater flow into the impurity receiving tank 31 and the electrolytic tank 1.
The aggregated impurities a that could not be floated in the bit P are also separated and floated secondarily and flow into the impurity receiving tank 31. From there, it passes through an oil-water separation tank (not shown) and is disposed of. (2) Impurities heavier than the waste water are gradually precipitated in the separation chamber 28, and these precipitated impurities are discharged to the outside by the on-off valve 33'.

As clearly shown in FIG.
is the separation chamber 28 with the vertical center line L-L of the electrolytic cell 18 as the boundary.
Since the electrolytic cell 18 is disposed on the side away from the electrolytic cell (right side in FIG. 3), 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 directed toward the impurity receiving tank 31. It can be extruded, and impurities can be separated efficiently. ■ The wastewater whose impurities have been separated as described above in the separation chamber 28 gradually descends, ascends the wastewater pipe 36 that opens at the lower part of the separation chamber 28, flows into the overflow tank 34, and flows into the overflow tank 34.
The water overflows and flows down into the monkey exit room 16. ■ The wastewater in the filtration chamber 16 passes down through the oak wood 39, and after finally separating and removing fine contaminants, it flows into the clean water tank T through the water conduit 44 and the three-way on-off valve 46. Then, it is reused as a vertical car wash by driving the car wash pump 2.

As wastewater purification continues as described above, the filtration chamber 1
6, the oak wood 39 has a blemish.

In such a case, the clogging will be automatically removed by the following action. @ 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 oak wood 39 in the retreat room 16 is discharged.

■ After draining, close the cylinder valve 50, drive the car wash pump 2, force the clean water in the clean water tank T through the water pipe 44 into the oak wood 39 from the lower part, and at the same time open the on-off valve 42 to increase the pressure. The pressurized air in the air source 41 is introduced into the village 39 through the air jet pipe 40.

The monkey material 39 is washed in a floating state by the pressurized upward flow of clean water and air. Before the washing chamber 16 becomes full of water, the drive of the car wash pump 2 is stopped to stop the supply of clean water, and the on-off valve 42 is closed to stop the supply of pressurized air.
- After waiting for the floating oak wood 39 to sink, the cylinder valve 50 is opened, and the impurity-containing water in the sieving chamber 16 is discharged through the drain chamber 49.

■ Repeat the pig washing operations in ■ and @ several times.

■ After finishing draining, close the cylinder valve 50 and remove the oak wood 39.
In order to rinse and clean the water, the car wash pump 2 is operated again while the air supply is stopped, and only the clean water in the sanding chamber 16 is pumped out, pushing up the impurities on the sanding material 39 upwards. The air remains in the oak wood 39 and pushes the air upwards. When the cleaning chamber 16 is filled with clean water in this rinsing process, the clean water passes through the reverse flow path 37 and overflows the cleaning chamber 16, and is guided by the rectification guide plate 38 into the electrolytic cell 18. Floating impurities that flowed in and remained in the waste 18 without being discharged are driven into the impurity receiving tank 31 and discharged.■ Car wash pump 2
operation is stopped, the cylinder valve 50 is opened, and the water remaining on the monkey material 39 is drained through the drainage chamber 49.

@ 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, there is a purification chamber 15 that sucks in wastewater and floats and separates impurities mixed in the wastewater, and a filter adjacent to the purification chamber 15 that passes the wastewater after impurity separation. A filtration chamber 16 having a oak material 39, a clean water tank T for receiving clean water after the filtration, and a clean water tank T in the oak material 39.
The filter chamber 16 is filled with the clean water in order to rinse the oak material 39 after the washing chamber is washed. Higashi room 16
A back flow path 37 that allows the clean water to overflow from the purification chamber 15 to the purification chamber 15 is provided in the partition wall 14 between the purification chamber 15 and the filtration chamber 16.
Since the impurity receiving tank 31 is provided at the upper part and receives impurities floating on the water surface of the purification chamber 15 carried by the overflowing clean water, it is arranged adjacent to the upper part of the purification chamber 16.
To clean a purification chamber 15 by surely removing impurities floating on the water surface of the purification chamber 15 by a simple means of overflowing clean water from the filtration chamber 16 to the purification chamber 15 after purifying the filtration chamber 16. This creates a purification chamber 1 where impurities accumulate.
It is possible to prevent the deterioration of the purification function of the filter chambers 1 to 6 and to send purified wastewater to the filter chamber 16, thereby lengthening the refining cycle of the filter chambers 1 to 6. Further, since a general cleaning mechanism for the filter chamber can be used to remove impurities, a large and expensive scraping device is not required, and the entire device can be made compact and its cost can be reduced. Furthermore, since the clean water used for rinsing the fishing village 39 is used to remove impurities from the purification chamber, the clean water can be used effectively and is economical.

[Brief explanation of drawings]

Fig. 1 is an overall schematic side view of the device of the present invention, Fig. 2 is a longitudinal sectional view of the device, Fig. 3 is a longitudinal sectional front view of the device, and Fig. 4 is taken along line W-W in Fig. 2. FIG. C...Wastewater purification device, T...Clean water tank, 14...Bulkhead, 15...Electrolytic purification chamber, 16...Sarugashi Chamber, 31... Impurity receiving tank, 37... Back flow path, 39... Transfer material. Figure 3 Ship chart N Nuka map size

Claims (1)

[Claims] 1. A purification chamber 15 that sucks in wastewater and floats and separates impurities mixed in the wastewater; a filtration chamber 16 adjacent to the purification chamber 15 that has a filter material 39 for filtering the wastewater after impurity separation; a clean water tank T that receives filtered clean water;
The filter chamber 16 is provided with a filtration chamber cleaning mechanism capable of pumping clean water from the clean water tank T and injecting air into the filter medium 39, and the filtration chamber 16 is filled with the clean water in order to rinse the filter medium 39 after cleaning the filtration chamber. A back flow path 37 is provided on the upper part of the partition wall 14 between the purification chamber 15 and the filtration chamber 16 to allow the clean water tank to overflow from the filtration chamber 16 to the purification chamber 15 when the clean water tank is overflowed. A wastewater purification device in which an impurity receiving tank 31 floating on the water surface of the purification chamber 15 is disposed adjacent to the upper part of the purification chamber 15.