KR20020005380A - Apparatus of cleaning dirty water - Google Patents

Abstract

PURPOSE: A sewage purifying equipment is provided, which can minimize water content in filtered solid matter so that the filtered matter can be used directly as compost without any additional treatment. The filter system can be used semi-permanently without replacing filter and can be applied to various facilities where filtrate should be minimum such as filter of grinding oil of grinding machine. CONSTITUTION: The equipment comprises a filter drum(10), an influent water supplying part(1), a filtrate basin(30), a solid matter chute(20), a discharge pipe(22), a solid matter collecting tank(50), a nozzle(40), an air supplying part(S) and a vacuum generator. The influent water enters the rotational filter drum(10) of micromesh and micro solid matter contained in the water is filtered and the filtrate is collected in filtrate basin(30). The part of filtrate is pumped and atomized through nozzle(40) to the outside of filter drum(10) to exfoliate micro solid attached to inside of the drum(10) into a funnel(20) to discharge to solid matter collecting tank(50) through a discharge pipe(22). In the discharge pipe(22), an auxiliary discharge pipe(35a) is inserted pointing downstream to atomize compressed air, thus increasing velocity pressure and reducing static pressure so that vacuum is formed in the system, the vacuum expedite to exfoliate fine solid matter from the filter screen(10).

Description

Apparatus of cleaning dirty water}

The present invention relates to a wastewater purification apparatus, and more particularly, to a wastewater purification apparatus using a filter of a micro mesh type.

In recent years, the discharge standard of sewage and various wastewaters has been strengthened day by day, and as a device for the purification of such wastewater (hereinafter referred to as "sewage"), an apparatus as shown in FIG. 1 has been developed.

The filter drum 10 is a micro-mesh-type filter of ultra-high-strength microfiber polyester woven having a pore of 5 μm, 10 μm or 20-100 μm depending on the properties of the application, and the filter drum 10 is inserted into a rectangular frame cassette. The filter drum attached by the bolt clamp rotates around the body of the filter drum and removes the fine solids from the influent.

That is, when raw water from the inflow water supply unit 1 enters one side of the filter drum 10, the fine solids remain in the filter drum 10 by the rotating filter drum 10 in which the filter is mounted. Only water escapes and is stored in the filtrate container (30). Some of the filtered water is again pressurized by the pump (P), and some of the funnel-shaped fine solids attached to the filter drum 10 by spraying water downward from the upper part of the outside of the rotating filter drum 10 Is sent to the first injection pipe 15 to fall to the solid container 20, the remainder is inside the filter drum, dropping the fine solids not falling from the upper first injection pipe 15 back to the inlet source water. It is sent to the second injection pipe 25 located. Through the first injection pipe and the second injection pipe, the filter drum 10 may maintain a function as a filter.

Here, the water that is not pressurized by the pump (P) in the purified water is discharged, and the solid matter collected in the funnel-shaped container 20 is treated separately.

FIG. 2 is a view schematically showing another general sewage purification apparatus having a function similar to that of FIG. 1, and having a level sensor 27 for detecting the level of inflow water in the filter drum. The method of converting the rotational speed of the drive motor (not shown) of the pump (P) according to the water level is adopted, which is usually because the clogging state of the filter proportional to the degree of increase in the water level inside the filter drum 10, The water level inside the filter drum 10 is sensed to increase the injection pressure of the solids separation shower, that is, the first and second injection pipes 15 and 25a.

Also, the first and second injection pipes 15 and 25a are different from each other in that they are provided at the outer upper end of the filter drum 10.

At this time, the fine solid discharged through the funnel-shaped solid container 20 is observed to contain about 2-6% of the raw water, the filtered water contains about 94-98% of the water.

However, the filter drum system shown in FIGS. 1 and 2 uses high pressure water to drop fine solids, that is, foreign matters, so that the discharged fine solids contain moisture as described above. These water-containing microsolids require another secondary treatment.

If the water-containing fine solids are not secondaryly treated and disposed of, they become another contamination, and when secondary treatments thereof, the treatment cost is again required. In addition, in reservoirs such as fishing grounds, the amount of moisture is important, and since 2-6% of water is treated with the fine solids, there is a problem that water is wasted during the purification process.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a sewage purification apparatus that does not contain moisture when collecting the solid, that is, foreign matter.

Other purposes of the present invention may be various, but will be understood through the detailed description and drawings described below.

1 is a schematic configuration diagram of a general filter drum sewage purification apparatus

2 is a schematic configuration diagram of a general filter drum sewage purification apparatus

3 is a schematic configuration diagram of a wastewater purification apparatus according to a first embodiment of the present invention;

4 is a schematic structural diagram of a wastewater purification apparatus according to a second embodiment of the present invention;

5 is a schematic structural diagram of a sewage purification apparatus according to a third embodiment of the present invention;

Explanation of symbols on the main parts of the drawings

10: filter drum 20: solid container

22 discharge pipe 22a first vertical portion

22b: horizontal portion 22c: second vertical portion

30: filtered water container 40: nozzle

S: air supply part 35: exhaust auxiliary pipe

35a: bend

In order to achieve the above object, the present invention includes a filter drum which is equipped with a filter of a micro mesh unit and rotates about a central axis; An inflow source water supply unit supplying inflow source water to the filter drum; A filter container located below the filter drum; A solid container positioned inside the filter drum; A discharge pipe for discharging solids of the solid container; A solids collection tank positioned below the discharge pipe; A nozzle located above the outer side of the filter drum; An air supply unit supplying high pressure air to the nozzle; Sewage purification including air discharged from the air supply unit in the direction of the solids collection tank in the discharge pipe, discharge auxiliary pipe having a negative pressure generating device therein for generating negative pressure at the discharge pipe end in the direction of the collection tank Provide the device.

In addition, the present invention is a pump for supplying high pressure water between the air supply and the nozzle by pressurizing the water discharged from the filtered water container; A first valve controlling the nozzle to selectively supply water supplied from the pump to the nozzle; A second valve interlocked with the first valve and positioned between the air supply unit and the nozzle so as to selectively supply air from the air supply unit; A concentrated water discharge pipe branched from the discharge pipe; When the water is injected from the nozzle by the first and second valves to the concentrated water discharge pipe, when the air is injected from the nozzle further comprises a three-way valve which opens to the discharge pipe in the direction of the collection tank to provide.

In particular, the present invention and the spray shower is located on the outer upper portion of the filter drum;

A pump for pressurizing the water discharged from the filtrate container to spray the filter drum through the spray shower; A concentrated water discharge pipe branched from the discharge pipe; The pump further includes a three-way valve that opens to the concentrated water discharge pipe when the air supply unit is operated, and is discharged to the discharge pipe in the direction of the collection tank, wherein only one of the pump and the air supply unit is selectively operated. Provide a sewage purification device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, the same and similar reference numerals are given to elements having functions similar to those of the general sewage treatment apparatus shown in FIGS. 1 and 2.

3 is a schematic configuration diagram of the wastewater purification apparatus of the first embodiment according to the present invention. As shown, the present invention relates to a filter drum type wastewater purification apparatus as shown in FIGS. 1 and 2. Each pipe connected to the filter drum 10 in the figure is shown for convenience of understanding that all connected in the rotation axis direction of the filter drum, which is also the other drawings attached to the present specification.

That is, the inflow water is introduced through the inflow water supply unit 1 into the filter drum 10 equipped with the micro mesh type filter, and the inflow water is filtered by the rotating filter drum 10 due to the water level difference. It is separated into fine solids. At this time, the filtered water is discharged to the outside of the filter drum 10 and collected in the filtered water container 30, the fine solids remain on the inner surface of the filter drum (10).

At this time, in order to remove the residual microsolids attached to the inside of the filter drum 10, in the embodiment of the present invention, the nozzle 40 to which the air is injected, is provided on the outer upper portion of the filter drum 10 There is a difference in that.

The nozzle 40 is a device for injecting air supplied from the air supply unit S, such as a compressor or a blower, and solid matter, that is, foreign matter remaining on the inside of the filter drum 10 during the inflow of the filtered water. ) To restore its function as a filter.

On the other hand, the solid matter dropped by the high pressure air of the nozzle 40 is dropped into the solid container 20 in the filter drum 10 is discharged to the collection tank 50 through the discharge pipe 22. The discharge pipe 22 is, for example, a first vertical portion 22a connected to the lower end of the solid container, a horizontal portion 22b connected to one end of the first vertical portion 22a, and a horizontal portion 22b. It may be composed of a second vertical portion 22c extending downward from the other end of the discharge pipe 22, the predetermined position of the horizontal portion 22b of the discharge pipe 22, preferably discharge pipe from the air supply (S) (22) A discharge auxiliary pipe 35 having a diameter smaller than that of the discharge pipe 22 for injecting air into the inside is introduced.

The discharge auxiliary pipe 35 is to facilitate the discharge of the solid foreign material through the discharge pipe 22, the end of which is bent in the direction of the collection tank in the state inserted into the discharge pipe 22 for this purpose Have That is, the discharge auxiliary pipe 35 injects the air supplied from the air supply part S toward the second vertical part 22c of the discharge pipe 22, and the second vertical part of the solid foreign material discharged to the collection tank 50. By providing a negative pressure to the flow of the part 22c, it serves to facilitate the discharge of the solid foreign matter, the general negative pressure generating device for forming a negative pressure in the bent portion (35a) of the discharge auxiliary pipe 22 It may be included, for example, it may be in the shape of a nozzle (nozzle).

That is, the solid matter dropped into the solid container 20 by the air injected into the nozzle 40 in the state attached to the inside of the filter drum 10, and the first vertical portion 22a of the discharge pipe due to the height difference It is discharged to the collection tank 50 through the horizontal portion 22b and the second vertical portion 22c, and the solids have a large friction with the discharge pipe 22 because water is removed and there is no fluidity. Since the discharge to the collection tank 50 is not smoothly progressed by the friction between the solid and the discharge pipe 22, the present invention further includes a discharge auxiliary pipe 35 that may generate a negative pressure to discharge the solid foreign material. To assist.

At this time, the level sensor of reference numeral 17 is an element for maintaining the filter performance of the micro mesh filter of the filter drum 10, as in the conventional level sensor, if the water level in the filter drum 10 is high, the filter is clogged so that it does not filter well Therefore, in this case, the pressure of the air supplied from the air supply unit S is increased by the detection of the level sensor, or the injection frequency toward the nozzle 40 from the air supply unit S is increased.

Due to the present embodiment, the solids stored in the solid container 20 and the collection tank 50 are almost no separate secondary treatment because the solids are collected with little moisture content, so when applied to livestock wastewater treatment as an example. It can be used immediately due to manure.

On the other hand, Figure 4 is a schematic configuration diagram showing another embodiment according to the present invention, the difference from the embodiment of Figure 3, the pump (P) for pressurizing a part of the filtered water discharged from the filtered water container (30) In addition, it constitutes a configuration for supplying filtered water between the air supply (S) and the nozzle (40). At this time, the filtered water is provided between the first solenoid valve 48 and the air supply unit S and the nozzle 40 between the pump P and the nozzle 40 so as to be selectively supplied with the air supplied from the air supply unit S. The second solenoid valve 43 is interposed therebetween. The solenoid valve is adopted here, but any valve acting as a valve is irrelevant.

The first and second solenoid valves 48 and 43 may be opened at one or the same time so that water or air is supplied to the nozzle 40 as necessary.

In addition, it may be branched in the horizontal portion of the discharge pipe discharged from the solid container dropped into the solid container by the air or filtered water sprayed from the nozzle 40, and further includes a concentrated water pipe controlled by a three-way valve mounted thereto do.

At this time, when the filtered water is injected through the nozzle 40, since the solid stored in the solid container 20 contains a certain amount of water, a three-way valve (3) between the solid discharge pipe 22 and the concentrated water pipe ( 42 is opened in the concentrated water storage tank direction 46 not shown, and when air is injected into the nozzle 40, the three-way valve 42 is the second vertical portion 22c of the discharge pipe 22. Open to the side to discharge the solids to the collection tank (50).

In this case, the injection of filtered water or air, which is selectively controlled by the first and second solenoid valves 48 and 43, and the three-way valve 42 are preferably interlocked with each other. That is, in the case of removing the solid matter adhered to the filter only by air as in the first embodiment of the present invention described above, the filter regeneration ability may be lowered. Thus, in the second embodiment of the present invention, the filtered water at a predetermined time interval By supplying the through the nozzle 40 is configured to improve the filter regeneration ability. At this time, since the solids contain a certain amount of water, the concentrated water pipe is discharged using the three-way valve 42 before going to the collection tank 50 through the second vertical portion 22c of the discharge pipe 22. It is configured to face through the concentrated water storage tank (46).

In other words, this embodiment has the advantage of minimizing the generation of concentrated water while further improving the regeneration capacity of the filter, and the foreign matter in the solid state with little moisture in the collection tank can be collected.

On the other hand, Figure 5 is a schematic diagram showing another embodiment according to the present invention, in the second embodiment of the present invention shown in Figure 4 air and filtered water was selectively supplied through the nozzle 40, but the nozzle If there is a problem in the 40, there is a separate filter water supply line 49 is configured to separate the foreign matter (異), in this case the pump (P) and the air supply (S) It is desirable to allow only one of them to work selectively.

At this time, the operation principle of the three-way valve 42 is as described in the second embodiment.

As described above, due to the sewage purification apparatus according to the present invention, in purifying water such as reservoirs lacking water, such as fishing grounds, it is possible to minimize the water content of the filtered discharge to suppress unnecessary waste of water There is this. In addition, when used for purification of livestock waste water, the collected solids contain only minimal moisture (actually, the solids collected in the collection tank have almost no water), so that the solids can be used as manure without any secondary treatment. There is an advantage.

In addition, since the discharge of the concentrated water is minimized, there is an advantage that the problem of treating the concentrated water can be solved. When applied to the grinding oil filtration device for the grinding equipment and the filter for the washing machine in the factory, it is unnecessary to supplement the liquid.

The present invention can be a semi-permanent filter non-exchanging device that can be applied to all fields that require the filtration of liquids containing suspended solids.

Although the method according to the present invention has been described above, this is merely an example, and various changes and modifications may be made without departing from the spirit of the present invention, all of which fall within the scope of the present invention as described in the appended claims.

Claims (3)

A filter drum mounted with a micro mesh filter and rotating about a central axis; An inflow source water supply unit supplying inflow source water to the filter drum; A filter container located below the filter drum; A solid container positioned inside the filter drum; A discharge pipe for discharging solids of the solid container; A solids collection tank positioned below the discharge pipe; A nozzle located above the outer side of the filter drum; An air supply unit supplying high pressure air to the nozzle; A discharge auxiliary pipe having a negative pressure generating device therein for injecting air supplied from the air supply unit toward a solid collection tank in the discharge pipe and generating a negative pressure at an end of the discharge pipe in the direction of the collection tank; Sewage purification apparatus comprising a. The method according to claim 1, A pump for pressurizing the water discharged from the filtrate container to supply high pressure water between the air supply unit and the nozzle; A first valve controlling the nozzle to selectively supply water supplied from the pump to the nozzle; A second valve interlocked with the first valve and positioned between the air supply unit and the nozzle so as to selectively supply air from the air supply unit; A concentrated water discharge pipe branched from the discharge pipe; When the water is injected from the nozzle by the first and second valves, a three-way valve is opened to the concentrated water discharge pipe, when the air is injected from the nozzle to the discharge pipe in the collecting tank direction Sewage purification device further comprising The method according to claim 1, A spray shower positioned above the outer side of the filter drum; A pump for pressurizing the water discharged from the filtrate container to spray the filter drum through the spray shower; A concentrated water discharge pipe branched from the discharge pipe; The pump further includes a three-way valve that opens to the concentrated water discharge pipe when the pump is operated and is discharged to the discharge pipe in the direction of the collection tank when the air supply unit is operated. The pump and the air supply is a sewage purification device which is selectively operated only one of the two