JPS6318479Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is intended to separate, for example, suspended solids or emulsified dirt and, in particular, to remove oil from oil-contaminated water, thereby reducing wastewater, such as making drinking water or miscellaneous water. It relates to a purifying device.

In the device according to the present invention, water to be purified,
That is, untreated water is introduced, preferably under pressure, into a clarification chamber provided with an overfill material, into which a flocculant is injected and, by the action of the flocculant, suspended matter, e.g. The particles or emulsified dirt are encapsulated in the cells formed by flocs (hereinafter also referred to as flakes), and then the flakes are fixed in the small pores of the filter packing layer, and in this way The bound dirt is preferably removed from the filter packing layer by simultaneously using air and water together with the flake cells (hereinafter also referred to as cells) surrounding the dirt, whereby the filter packing layer is , conditions are now suitable for confining the flakes, and the purification of the water and the regeneration of the filter bed take place alternately.

Similarly, in the device according to the invention, which forms the object of the invention, the purification of untreated water in the purification chamber with a flocculating agent is carried out to remove dirt in the cells formed by the flakes. This is done by enclosing and subsequently fixing this soil-laden flake to a recyclable filter packing layer to remove the flake from the water, the device correspondingly comprising a filter packing layer. , using a container capable of applying pressure, connected to the container for introducing the water to be purified, preferably under pressure, for adding the flocculant and for introducing air. It is also connected to a suitable mechanism for discharging the purified water.

There are repeated demands for the production of potable or utility water from unpurified water or surface water and for environmental protection reasons for the purification of industrial water.

Liquids can in principle be purified according to three basic methods: chemical methods, physical methods and methods that combine both of the above. First, from an economic standpoint, if a physical purification method can be employed, priority is given to the physical purification method. These physical methods have in common that the water to be purified is precipitated and/or clarified, then filtered and finally, if necessary, subjected to repurification.

Most modern water purification methods strive to eliminate the steps of sedimentation and clarification. Instead of omitting such a working step, the water to be purified can be introduced directly through one or more filter layers and, during its passage through the filter layers, the formation of flocculants and possibly flakes can be avoided. Another substance that promotes is added continuously or intermittently. The flocculant is supplied in the form of a chemical solution into the processing chamber and, during the purification process in said treatment chamber, envelops and surrounds the undesired unpurified components by the produced flakes. The flakes and the dirt enclosed within the cells formed by the flakes are then trapped and removed from the water using a filter material.

In the filtration processes actually used, the filter packing loaded into the processing chamber sooner or later becomes "saturated" and is therefore unsuitable for further absorption and retention of flakes. Therefore, the filter filler must be regenerated from time to time in order to be able to function anew. In carrying out the filtration or regeneration process, known filters can be divided into two groups: bed-type filters and layer-type filters.

In the case of so-called floor filters, the dirty water is introduced through a filter medium composed of granular materials such as silica sand, ground anthracite, granulated activated carbon or synthetic resins. The filter layer is generally between 1 and 2 meters thick and the overspeed is between 5 and 15 m/hr. The layer thickness and overspeed depend on the degree of contamination of the water to be purified, the type of dirt, the requirements placed on the purified water and the so-called cycles during the regeneration process.
Selected according to the tile.

Floor filters of the type in which the overfill material is composed of a porous plastic are also known. The plastic filler consists of cubic pieces with side lengths of 3 mm to 5 mm. This overlayer is arranged between the defining surfaces, preferably perforated plates.
The pore size of the filling part is selected particularly carefully.
The filler material is held in a compressed state during the over-processing. This is because the overfill material has a lower specific gravity than water, and when not in use, it is only loosely filled into the overfill chamber. In this case, the water to be purified flows with little resistance through the gaps between the individual pieces of the superlayer, so that no desired overaction occurs.

The advantage of floor filters is that they do not require relatively long regeneration treatments to produce filtered water of the required quality. This is because the filter material has a large number of pores suitable for adsorbing dirt, and together these pores form a large interstitial volume or pore volume. On the other hand, the disadvantages of floor-type filters are that they require large amounts of purified water to regenerate the pores after they become clogged, and that compressed air must be used to loosen excess material. It is.

Among these disadvantages, the need for pure water is particularly problematic. Experience shows that up to 10 percent of purified water is often lost as sludge. A further economic disadvantage is the large amount of energy required to supply the medium for the regeneration process (particularly in the case of very dirty water). If synthetic resins are used as overfilling material, the situation is relatively complicated. This is because supplementary mechanical devices must be incorporated and operated to compact the overfill and circulate the regeneration medium, and such devices are generally subject to failure. This is because it is easy for this to occur.

In the case of the second group of filters, so-called layered filters, gel substances are applied onto a fixed base, for example porous ceramics, powder metallurgically produced metal plates or densely woven textiles. For example, bitumen, silica, metal oxides, etc. are applied. This gel material passes through the liquid to be purified. Filter paper can also be mentioned as a conventional layered filter.

The advantage of layered filters is that they are capable of relatively high overvelocities (15-15 m/hr) and can deliver high quality purified water even with relatively thin layer thicknesses. However, the disadvantage is that such thin overlayers wear out quickly and clog the pores, so that the cycle time of layered filters is much shorter than that of floor filters. be. Furthermore, it is undesirable that this active superlayer cannot be purified sufficiently or without considerable expense.

A typical type of known modern filtration device is as described in German Patent Application No. 1922196, which discloses a continuously operating concentrating pulsating filter. The device is adapted to work with one or more filter elements of fixed construction, for example made of ceramic. This device contains a thickened suspension and
It has a container that serves to drain the suspension liquid, and a pulsating chamber provided on each of the inlet and outlet sides that serves to drain the superfluous liquid.

This device operates continuously, with continuous regeneration as well as aging. Thus, when the filter element becomes clogged, the pressure in the pulsating chamber increases, and the overpressure thus generated, while providing a localized abutment, "scrapes away", so to speak, the dirt that has settled on the surface of the filter element. The above-mentioned reproduction is performed by. The impacting action on the outlet side can be facilitated by using an external energy source, such as a compressor, for example.

The above-mentioned device is suitable for passing dirt as a suspension from thick, dirty liquids when the overfill material carries out continuous purification. It is advantageous for the regeneration to take place automatically due to the pressure difference created during the overload.

However, the disadvantage is that if the concentration of dirt is high, a very large overarea must be used. This is because otherwise it would clog quickly and the pulsating chamber would have to be operated continuously. Furthermore, it is undesirable that the over-element must withstand large pressure differences in opposite directions during over-processing and reprocessing.

In general, if waste water soiled with oil or plastic has to be passed through filter elements constructed of ceramic material and capable of withstanding mechanical stress, they will not be cleaned as long as mechanical pulsation is not applied. The small holes become so clogged that it is impossible to do so. The above devices are therefore not suitable for purifying this type of wastewater.

A relatively simple construction of a filter device is described in DE 14 36 294 A1. This filtration device essentially consists of a pressurizable filtration vessel in which a fixed lower filter plate and a hydraulically or pneumatically operable upper filter plate are arranged.

During overfilling, the overfill between the two filter plates is compressed. When regenerating, the upper filter plate is lifted so that the excess material can be loosened. The overfilling material is composed of an elastic material whose specific gravity is approximately equal to the specific gravity of the liquid to be purified.

This device is advantageously used when liquid has to be introduced through an overlayer of ion exchange resin. With this device, the overfill material must be kept pressed during the process.

This is because, if this is not done, the overfill material will be washed away, or at least loosened to such an extent that effective filtration can no longer be carried out. The upper filter plate is designed to be removable, since the filling must be loosened for reprocessing.

Although the basic idea is reasonable,
This device is not suitable for purifying oily wastewater. During overtreatment, the packed bed is pressed so strongly that it occupies only a small portion of the space between the upper and lower filter plates. For this reason, the over-step does not work well, and furthermore, in order to operate the filter plate hydraulically or pneumatically,
It is necessary to additionally install mechanical devices.

The Lyselt filtration apparatus described in Kiesel's "Handbook of Chemical Technology" belongs to the filtration apparatus which operates at overpressure. This filtration device consists of a sealed filter container that can be pressurized;
It includes an air drum, a pump that supplies untreated water, and a compressor that generates air pressure in the air drum circle. The filter filling consists of an inelastic granular solid material, preferably silica sand. The overfill section is supported from below by a filter plate with filter cartridges. A second non-perforated filter plate is mounted below the filter plate.

Reisert-type filters operate intermittently. When the packed bed is exhausted, that is, when the small holes in the packed bed are clogged, compressed air is introduced into the lower chamber of the overcontainer. The compressed air, while locally impacting the overfill, pushes in the already purified water that has collected at the bottom of the container, and uses this already purified water to loosen the fill. When the water at the bottom of the vessel is used up, the material in the overfilled bed is loosened by introducing more compressed air;
During this time, dirt deposited on the surface of the filling material is removed. Dirt can be removed by supplementary squeezing with strained water.

The Reiselt filter is suitable for all cases where the bed is made of non-elastic solid particles. It has good regeneration activity. However, it is undesirable that it requires a large amount of sump water for the regeneration process and that it requires the use of additional equipment such as hydropipes, air drums, etc. This device cannot be used for beds made of elastic materials.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a device for carrying out a method for effectively purifying unpurified water, especially oily wastewater, which does not have the disadvantages of known devices and which achieves the required purity. It is possible to use superfilling materials suitable for producing water, which are elastically and easily compressed but can return to their original shape again;
Moreover, it is an object of the present invention to provide an apparatus that has a long life of a packed bed and can easily and effectively regenerate an overfilled bed.

Furthermore, a special purpose of the present invention is that by adding a flocculant, water laden with emulsified dirt is purified in such a way that the flakes form cells enveloping the dirt and reach a desired purity. The objective is to develop an apparatus in which the flakes in the overfilled bed can be separated and the overfilled bed can be regenerated by completely removing the dirt trapped over a long period of time.

The basic idea of the present invention is mainly that layered filters (e.g. paper filters, thin film filters, etc.) perform filtering very efficiently, but once they become clogged, it is very difficult to regenerate them. Or it can hardly be regenerated, while
It is based on the recognition that bed-type filters (e.g., made of sand, pebbles, activated carbon, etc.) have poor overefficiency, but can be regenerated relatively easily and efficiently after clogging occurs. .

Furthermore, the present invention can provide an optimal method that combines the characteristics of layered filters and bed-type filters when using an overfilled layer made of highly elastic material that can be completely loosened. This is based on the knowledge that In other words, this means that the equipment used to carry out the above method can be filtered like a bed filter and can be regenerated like a bed filter. be. 0.1 to 25mm as overfill
The desired effect can be achieved very precisely by using plastic foam that has been ground to a particle size of .

Furthermore, unlike conventional filtration methods, filtration is not carried out by flowing liquid from top to bottom, nor is regeneration carried out from bottom to top; The fact that lapses occur from bottom to top and regeneration occurs from top to bottom belongs to the knowledge that follows the idea of the present invention. This makes it possible to control excess activity and, moreover, it is not necessary to use waste water in the regeneration process.

When passing from bottom to top, the light overfill material is pressed towards the upper filter plate of the purification chamber, the layer thickness of the overfill material and its porosity being smaller than that of the overfill material. is affected by the velocity of the liquid flowing through it. This means that the effectiveness of the purification can be adjusted at will by varying a few parameters, in particular the speed of the water to be purified.

During overprocessing, the filter packed bed acts as a layered filter. When the small pores of the filter packed bed are clogged, the liquid supply is interrupted, which causes the packed bed to loosen, and the filling material is removed from the upper filter plate. It fills the excess space between the filter plates without being pressed. excess material is
It can be regenerated by simply draining the liquid from the overcontainer without using purified water.

Rather than removing liquid from the purification chamber by the action of gravity, the effectiveness of regeneration can be enhanced by drawing it through at a high rate using a pump. Furthermore, the effectiveness of the regeneration process is improved by introducing air into the overfilled bed before or during drainage or suction. This is because by introducing air in this way, the particles in the packed bed can be actively stirred.

The invention therefore provides that the water to be purified is preferably introduced under pressure into a clarification chamber provided with an overfill, a flocculant is injected into the clarification chamber, and the flocculant is Due to the action of the agent, for example, suspended particles or emulsified dirt become enclosed within the cells formed by the flakes, and then
The flakes are fixed in the pores of the filter packing, and the soil thus bound is brought into contact with the cells of the flakes surrounding said soil, preferably by simultaneously using air and water. For example, when the overfill is removed from the overfill, the overfill becomes suitable for confining the flakes again, and water purification and overfill regeneration take place alternately, e.g.
The present invention relates to an apparatus for separating suspended solids or emulsified dirt, in particular for removing oil from oil-contaminated water, and thereby purifying contaminated water, such as in the production of drinking water or water for general use. However,
In the device according to the present invention, an overfilling material consisting of particles having deformable elasticity is loaded into an overchamber in a purification chamber, and untreated water to be purified passes through the overfilling material from below. the degree of unpurification of the purified water supplied upwards and leaving the purification chamber with an overfilled bed during the purification process, at least;
The degree of unpurification of the initially produced preliquid is measured and the flow rate of untreated water introduced into the purification chamber is adjusted, thereby adjusting the pore volume of the overfill material to the required size. The activity of the purification is adjusted until the required purity is reached by flowing the untreated water from top to bottom through the overfill and into the purification chamber. This is characterized in that the overfilling material that has been used is recycled.

According to another feature of the invention, the degree of contamination of the preliminary fluid and/or the purified water is controlled by intermittent sampling or in other cases, e.g. is controlled by continuous measurements using a measuring instrument installed in the flow path.

To regenerate the overfill, the untreated water present in the purification chamber is drained off one or more times or pumped off one or more times using a pump. When water is drained or sucked out, regeneration can be carried out more effectively by using compressed air for cleaning.

During regeneration of the overfilled bed, the material of the overfilled bed is agitated with air, which removes surface dirt from the particles of the overfilled material;
The sludge washed from the overfill is then forced out of the container using air.

In the latter case, the sludge is removed from the container using compressed air. At this time, Suratji
It forms a vortex state together with the elastic particles of the overfilled bed, thereby promoting mixing of the overfilled material. At the end of the recycling process, the overfill material is
Compressed air is used to push the dirt toward the lower filter plate, thereby forcing the trapped dirt through the pores of the overfill material.

For example, in an apparatus according to the invention for separating suspended solids or emulsified dirt and, in particular, removing oil from oily discharges, thereby purifying wastewater for the production of drinking water or general purpose water: Purifying the untreated water in a purification chamber using a chemical solution with flocculating action envelops the dirt in cells formed by flakes,
This is done by subsequently fixing the dirt-laden flakes in an effectively renewable overfilling bed and removing the flakes from the water; It utilizes a closed container containing a purification chamber that can be used to purify the untreated water that is to be purified.
Preferably, it is connected to a container for feeding under pressure, adding flocculant and introducing air, and connected to a suitable mechanism for draining the purified water, and , the purification chamber of the vessel is constituted by a lower reaction chamber, an intermediate filtration chamber and an upper water chamber, the filtration chamber being defined by a lower filter plate and an upper filter, and containing the untreated water to be purified. A line leading into the vessel, a line introducing the flocculant into the vessel, and a line discharging the sludge washed from the trapped dirt are connected to the lower reaction chamber of the vessel, while ,
A conduit for discharging the purified water is connected to the upper water chamber of the container, and an elastic overfill material with a large pore volume that can change its shape significantly is connected to the upper water chamber of the container. It is structured so that it is arranged in

According to another feature of the device according to the present invention,
The overfilling material consists of an aggregate of porous particles or of a comminuted plastic foam with free-flowing properties. Preferably, the overfill material contains particles of different sizes, with the finest part being 0.1 mm or larger, while
The largest part is 25mm or larger.

In a preferred embodiment of the invention, the lower filter plate as well as the upper filter plate are fixedly attached to the purification chamber of the vessel.

There is one line in the vicinity of the vessel, one for introducing the untreated water to be purified, one for injecting the flocculant into the vessel, and one for discharging the sludge containing the trapped dirt. Preferably, they are combined into a common filling and draining line.

In another embodiment of the device according to the invention, the overfill material is divided into layers by separating surfaces, preferably by perforated plates. The perforated plate is fixedly attached to the container.

The device according to the invention has many technical and economical advantages compared to conventionally known devices used for purifying water. The most important technical feature, which has so far not been satisfactorily achieved, is that it is possible to purify oily water or milky, dirty liquids. . According to the present invention, purification is achieved to a greater extent and more effectively than with conventional methods. 5 to 16, which is commonly done in conventional cases of negligence.
m/hr, the device according to the present invention using the method according to the present invention has an overspeed of 35 to 100 m/hr.
Overspeed can be obtained up to.

A further technical advantage is that the necessary flocculation steps for removing suspended solids and emulsified dirt can be carried out within the device itself. It is economical that the regeneration process does not require already purified water and that a very good regeneration process can be achieved simply by removing the untreated water from the septic tank by the action of gravity. This is extremely advantageous from a viewpoint. Furthermore, it is advantageous that the functionality of the device can be easily and completely automated. Due to the large overspeed, the capacity of the device is significantly greater than that of previously known devices, so that the unit investment costs can be significantly lower.

Many other advantages can be obtained on the basis of the structural embodiment of the device according to the invention. For example, a filter plate that limits overchambers
The fact that it remains in place both during regeneration and over time, and thus can simplify the structure, belongs to the basic idea and constructive implementation described above. The introduced air has the function of not only loosening but also stirring the material of the overfilled bed, thereby making it easier to remove dirt from the surface of the particles. In the second stage of the regeneration process, the introduced air, possibly compressed air, is used to press the overmaterial against the lower filter plate, thereby forcing dirt out of the pores in the overmaterial. It is possible.
Because overfilling material, thanks to its elasticity,
This is because it absorbs dirt like a sponge during the over-processing process, and on the other hand, during regeneration, especially by the compression action, all dirt can be removed again.

A very advantageous feature compared to previously known methods is that the porosity of the overfill material and the purity of the clarified water can be adjusted by varying the liquid passage rate. Since the regeneration is carried out using untreated water, no special equipment is required for the regeneration treatment. Due to the large overspeed, the device can be made compact, which allows significant savings in investment costs.

Furthermore, it is advantageous that the introduction of air not only loosens the overfill material, but also moves it in a vortex, which results in complete mixing and therefore a powerful and rapid regeneration process. It is to be done. It cannot be overlooked that the overfilling material can theoretically be regenerated indefinitely, and that the lifespan of the overfilling material is virtually infinite.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings illustrating the present invention.

The main part of the device of the present invention is the container 33, which
A lower filter plate 5a and an upper filter plate 5b are fixedly arranged in said container 33. Lower filter plate 5
a and the upper filter plate 5b are connected to the container 33
The internal purification chamber is divided into three parts: a reaction chamber 4, an overchamber 6, and an upper water chamber 6.
An overfill material 7 is loaded into the overfill chamber 6. As shown in FIG. 1, the overfilling material 7 is
During the filtering process, the pressure of untreated water flowing in from below pushes it up around the top of the filtering chamber and presses it against the upper filter plate 5b.

An untreated water supply pipe line 22, a flocculant pipe line 25,
A preferred embodiment of the device in which the sludge drain lines 28 are combined into one common fill and drain line 25 is shown in FIG.

It is clear from FIG. 1 that the untreated water enters the device according to the invention through the foot valve 21 and reaches the suction valve 2 in the combined suction line 24. The combined suction pipe 24 is the pipe 2
Not only does it conduct water coming from the chemical tank 13, but also the flocculant flowing from the chemical tank 13 through the chemical dispensing valve 12 and the conduit 25.

The combined suction line 24 is connected to the pump 1 which pressurizes the raw water already containing flocculant. After the untreated water is pressurized by a pump, it is connected to a combined pressure pipe 26, a pressure valve 3,
The filling/draining line 35 is reached via the pressure line 27 . Preferably, a regulating valve 19 is provided in the pressure line 27 with which the flow rate of the untreated water can be varied and thus the porosity of the overfilling material 7 can be adjusted, ie the effect of the overfilling can be adjusted.

A sludge suction line 23 equipped with a suction valve 14 is
It is clear from FIG. 1 that it is connected to the lower connection point of the filling/draining pipe 35. When regenerating overfill material, the dirty water in the container 33,
So-called sludge is removed from the purification chamber.

During the regeneration process, the sludge is transferred to the combined suction line 24, the pump 1, and the combined pressure line 2.
The sludge reaches the sludge pressure valve 15 through the sludge pressure valve 15 and is discharged from the device through the sludge discharge line 28. In this case, since the sludge flows in the required direction, it goes without saying that the suction valve 2 and the chemical liquid placement valve 12 must be closed. If the above-mentioned valve is open, the sludge will flow into the pressure line 27 or into the container 33.

During the overflow process, untreated water entering the vessel 33 from below flows through an overfill 7 arranged in a overfill chamber 6 between the lower filter plate 5a and the upper filter plate 5b. , upper water chamber 8
The purified water exits the device through the drain line 30. The so-called preliminary liquid generated when the overflow process starts exits the device through the preliminary liquid pipe 29 branched from the discharge pipe 30 and the preliminary liquid valve 9 attached to the pipe. It is preferable that a drain valve 10, which is opened when this occurs, is provided in the drain pipe line 30.

After the pre-liquid leaves, the purity of the purified water leaving the drain line 30 is controlled and it is checked whether the process has reached a sufficient level of activity. For example, if it is desired to remove oil from oil-contaminated water, a continuously operating measuring device 34, such as, for example, an oil tester, can be installed in the drain line 30.

Air can be delivered into the container 33a from an external free atmospheric space through the air suction pipe 32. Air flows into the passage chamber 6 through the air passage cage 11. Air suction line 32 of container 33
An air suction valve 16 is installed around the inlet of the valve. This air suction valve 16 is advantageously constructed as a ball valve and is closed when the regeneration chamber is under negative pressure during the regeneration process. Furthermore, the ball valve is suitable for preventing the water passed under negative pressure from escaping from the upper water chamber 8 of the container 33 during overstepping.

Advantageously, the compressed air line 31 is also connected to the air intake line 32 via the air intake valve 16 . The compressed air line 31 transfers the compressed air generated by the compressor 17 to the air suction line 32 and the air cage 1 in order to perform more effective regeneration processing.
1 into the purification chamber of the container 33. A closing mechanism 18 is attached to the section of the air suction line 32 in front of the air suction valve 16 , which closes the air compressor 1 .
7 functions, the generated compressed air is not delivered into the container 33 and is prevented from flowing out into the atmosphere. Preferably, a check valve 20 is installed in the compressed air line 31, which prevents air from flowing back in the direction of the air compressor 17.

FIG. 2 shows another embodiment of the invention, in which the chamber 6 of the container 33 is divided into compartments by perforated plates 36,37. As a result, sections 7a, 7
The overfilled parts divided into b and 7c form mutually separated layers, and these layers do not mix with each other. In this case, it is also possible to fill the individual compartments with overfilling material of various particle sizes.

As has been demonstrated by the tests conducted so far, the device according to the invention is not limited only to removing oil from oil-contaminated water, but also to remove oil from oil-contaminated water. It is also suitable for purifying water and other liquids. The device is particularly advantageously used in conjunction with a water softening reactor in order to filter the treated water to the purity required for the ion exchange filler. The device according to the invention can be used wherever it is required to employ and purify surface water from natural or artificial water or from a flowing water stream to make drinking water or water for general use. can be placed.

[Brief explanation of drawings]

Fig. 1 is a pipeline diagram conceptually illustrating one embodiment of the device according to the present invention, and Fig. 2 shows another embodiment in which the structure of the container is different from that shown in Fig. 1. Conceptually illustrated pipe diagram. DESCRIPTION OF SYMBOLS 1...Pump, 2...Suction valve, 4...Reaction chamber, 5a...Lower filter plate, 5b...
...upper filter plate, 6 ... overchamber, 7
...Overfilling material, 7a, 7b, 7c...Overcompartment, 8...Upper water chamber, 10...Drain valve, 11
...Air cage, 12...Medical solution dispensing valve, 13
... Chemical tank, 14 ... Suction valve, 15 ... Sludge pressure valve, 16 ... Air suction valve, 17 ... Air compressor, 18 ... Closing mechanism, 19 ... Adjustment valve, 2
0...Check valve, 21...Foot valve, 22...
...Untreated water supply pipe, 23, 24...Suction pipe,
25...Flocculant pipe line, 26, 27...Pressure pipe line,
28...Sludge drainage pipe, 30...Drainage pipe,
31... Compressed air pipe line, 32... Air suction pipe line,
33... Container, 34... Measuring device, 35... Filling/draining pipe line, 36, 37... Perforated plate.

Claims (1)

[Claims for Utility Model Registration] (1) A wastewater purification device for separating suspended and emulsified pollutants from water, which encloses the pollutants inside cells formed by flocs. In a wastewater purification system, which uses a flocculant in a purification chamber to purify wastewater after treatment, and which retains the contaminated flocs in a recyclable overfill and removes them from the water. , a pressurized and overfilled container comprising a purification chamber, and a device connected to the container for supplying the wastewater to be purified, flocculant and air into the purification chamber and for removing purified water; The purification chamber of the container is divided into a lower reaction chamber, an intermediate filter chamber and an upper water chamber, the filter chamber is partitioned by a lower filter plate and an upper filter plate, and the lower reaction chamber of the container is divided into a lower reaction chamber, an intermediate filter chamber and an upper water chamber. is connected to the final treatment wastewater supply pipe, the flocculant introduction pipe, and the sludge water discharge pipe for discharging captured contaminants, and the upper water chamber of the container discharges the purified water. 1. A wastewater purification device, characterized in that an overfilling material connected to a pipe line and formed of granules of an elastic material is disposed in an overchamber. (2) The wastewater purification device according to claim 1, wherein the overfilling material is composed of porous particles or a layer of a sponge-like foamed synthetic material. (3) The wastewater purification device according to claim 1 or 2, wherein the overfilling material is composed of a layer of particles with different particle sizes ranging from 0.1 to 25 mm. (4) The utility model registration claim described in any one of claims 1 to 3, characterized in that both the lower filter plate and the upper filter plate are fixed in the purification chamber of the container. wastewater purification equipment. (5) The supply pipe for untreated wastewater to be purified, the introduction pipe for flocculant, and the pipe for discharging sludge water containing filtered contaminants are assembled into a common filling and discharge pipe near the container. Claims 1 to 4 of utility model registration claims characterized in that they are
The wastewater purification device according to any one of the above items. (6) The wastewater purification device according to any one of claims 1 to 5 of the utility model registration claim, characterized in that the overfilling material is divided into layers by perforated plates. (7) The wastewater purification device according to any one of claims 1 to 6 of the utility model registration claim, characterized in that the perforated plate is fixedly incorporated into the container.