JPS6291297A - Sludge water treatment unit mountable on vehicle - Google Patents

Abstract

PURPOSE:To easily perform the treatment of sludge water, by mounting a sludge water treatment tank, a filter apparatus and a separated sludge tank to a base mountable to a bed. CONSTITUTION:A flat body vehicle is allowed to run to a place where a purifying tank is provided and the leading end of a hose is inserted in the sludge water in the purifying tank. After sludge water has been sucked in a sludge water treatment tank 3, a flocculant solution is sucked and stored in said tank 3 to be mixed with sludge water under stirring and treated water containing sludge floc is formed in the sludge water treatment tank 3. Subsequently, the treated water is sent to a filter apparatus 5 under pressure and solid-liquid separation is performed by rotationally driving a rotary filter cylinder 24. The filtrate after separation is returned to the purifying tank as filling water while separated sludge is stored in a separated sludge tank 6. By this method, sludge water from the purifying tanks at a plurality of places can be easily and surely treated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method of coagulating sludge water from a septic tank, etc. in a location where the septic tank is located, and subjecting it to solid-liquid separation, and then directly pumping the separated filtered water into the septic tank, etc. The present invention relates to a sludge water treatment unit such as a septic tank that allows only the separated sludge to be transported to a sewage treatment plant or the like.

[Conventional technology]

In areas where it is difficult to develop public sewerage systems due to topographical and social conditions, wastewater is often treated using septic tanks. Therefore, in order to maintain the normal function of the septic tank and to ensure that the water discharged from the septic tank has appropriate water quality, proper maintenance and management of the septic tank, especially the removal of sludge, is essential. Vacuum trucks are usually used to remove sludge.

[Problem that the invention seeks to solve]

However, when pulling out sludge using a vacuum truck, a large amount of water in the septic tank that does not require pulling is also pulled out along with the sludge. Therefore, the vacuum truck must frequently shuttle between the sewage treatment plant and the septic tank, and the septic tank must be separately filled with water after the sludge is removed.

Therefore, the main object of the present invention is to overcome the above problems and
Sludge water from septic tanks, etc. is subjected to coagulation treatment and solid-liquid separation treatment at the location of the septic tank, etc., and the separated filtrate water is returned directly to the septic tank, etc., while only the separated sludge is forced out and processed at the sewage treatment plant. An object of the present invention is to provide a sludge water treatment unit that can be transported to, etc.

Another object of the present invention is that the present invention can be mounted on a flat-body vehicle, which is a commonly used general freight vehicle, and can be transported by the flat-body vehicle to treat sludge water in a plurality of septic tanks, etc. To provide a sludge water treatment unit that can be installed at a location requiring treatment for a certain period of time without being mounted on the flat body vehicle, depending on the conditions of the location where the septic tank is installed, and can treat sludge water from a septic tank or the like at the location.

Still another object of the present invention is to provide a sludge water treatment unit that can easily and reliably treat sludge water from a septic tank or the like as described above.

[Means for solving problems]

The present invention can be installed on a flatbed truck, which is a freight vehicle.
Either it is transported by the flat body vehicle and treats the sludge water in septic tanks, etc. at multiple locations, or it is not mounted on the flat body vehicle and is placed at a location where treatment is required, and the sludge water in the septic tanks, etc. is treated there. The sludge water treatment unit is a sludge water treatment unit, and the base is removably placed on the loading platform of the flat-body vehicle, and at least the sludge water from a septic tank, etc., sucked through the suction and drainage hose is stirred and mixed together with a flocculant. a sludge water treatment tank equipped with a mechanism therein; a filtration device for solid-liquid separation of treated water containing sludge flocs treated in the sludge water treatment tank and pumped from the sludge water treatment tank; a separated sludge tank that accommodates sludge and presses out the sludge via a separated sludge discharge hose; a pressure pump that returns filtered water after solid-liquid separation to a septic tank or the like via the suction and drainage hose; A pressurizing/depressurizing device that separately pressurizes or depressurizes the internal pressure of the sludge water treatment tank and the separated sludge tank to perform a suction or pressure feeding operation to both tanks, and a vagina after being sucked into the separated sludge tank. The filtration device is equipped with a wash water tank for cleaning the inside of the discharge hose that stores the wash water that is pressed out from the separated sludge tank and used to clean the inside of the separated sludge discharge hose. A rotary filtration cylinder, a filtration water receiver arranged below the tank, and a sludge water intake pipe inserted from one end of the rotary filtration cylinder and having its tip positioned near the other end of the rotary filtration cylinder. The rotary filter cylinder is composed of:
The pressurizing/reducing device has a spiral blade continuous from one end to the other end on its inner surface, and is configured to be able to move up and down with the one end moving up and down about the other end.
The sludge water treatment unit 7), which can be mounted on a freight vehicle, is equipped with a pressure adjustment cock that can simultaneously reduce the pressure of the separated sludge tank and pressurize the sludge water treatment tank while adjusting the pressurization pressure. By providing this, the above objectives have been achieved.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sludge water treatment unit such as a septic tank according to the present invention shown in the drawings will be described below.

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a side view of an embodiment of the invention, Fig. 3 is a rear view of an embodiment of the invention, and Fig. 4 is a plan view of an embodiment of the invention. FIG. 5 is a schematic perspective view of the main parts of the sludge water treatment system in the embodiment, and FIG. 5 is a schematic perspective view of the main parts of the pressurization/depressurization system in the embodiment of the present invention. In the figure, 1 indicates the entire sludge water treatment unit of the present invention that can be mounted on a vehicle, and 2 indicates a flat body truck that is a freight vehicle on which the unit 1 can be mounted on a loading platform.

Further, 3 is a sludge water treatment tank equipped with a stirring mechanism 4 for stirring and mixing sludge water from a septic tank or the like sucked in through a suction and drainage hose (not shown) together with a flocculant, and 5 is the sludge water treatment tank. A filtration device mainly includes a rotary filtration cylinder 24 for solid-liquid separation of the treated water containing sludge flocs treated in step 3 and pumped from the sludge water treatment tank 3; A separated sludge tank 7 presses out sludge through a separated sludge discharge hose (not shown), and 7 is a separated sludge tank that separately pressurizes or depressurizes the internal pressures of the sludge water treatment tank 3 and the separated sludge tank 6. 3゜6 is a pressurizing/depressurizing device that performs suction or pressure feeding operation, 8 is a pressure pump that returns the filtered water after solid-liquid separation directly to a septic tank, etc. as water via the above-mentioned suction/drainage hose, and 9 is the above-mentioned sludge. A flocculant liquid tank 12 contains a flocculant to be sucked and stored in the water treatment tank 3, and the flocculant liquid tank 12 is sucked into the separated sludge tank 6, and then forced out from the vaginally separated sludge tank 6 into the separated sludge discharge hose. 15 is a washing water injection nozzle for washing the outer peripheral surface of the rotary filter cylinder 24; 22 is the unit 1 of the present invention or its A cleaning hose having a cleaning gun nozzle 27 at its tip for cleaning any nearby location; 42 is a high-pressure cleaning pump that pumps cleaning water from a cleaning water tank 43 to the cleaning water injection nozzle 15 and the cleaning hose 22;
44 is a hose reel for the separated sludge discharge hose with a cover 44° around which the separated sludge discharge hose is wound, 45 is the cleaning hose 22 is wound around a cleaning hose reel, 46 is a power device such as an engine and a motor that drives the pressurization/decompression device W7, and the vehicle-mountable sludge water treatment unit 1 of the present invention includes:
As shown in the figure, these facilities are mounted on a channel-shaped base 10 made of steel.

To explain the embodiment in more detail, the suction and drainage hose is mounted on a hose reel 1 driven by a motor (not shown).
) is equipped so that it can be fed out and rolled in freely, and is connected to the sludge water treatment tank 3 via the cock 3, and to the filtration device 5 via the cock 14 and pressure pump 8, respectively.

In addition, the sludge water treatment tank 3 is connected to the suction and drainage hose as described above, as well as to the flocculant liquid tank 9 via the cock 16, to the filtration device 5 via the cock 17, and as described below. They are in communication with the pressurization/depressurization device 7, respectively. The stirring mechanism 4 of the sludge water treatment tank 3 has two stirring blades 20 mounted on a vertical rotating shaft 19 driven by a motor 18.
．． 21 are positioned in a vertical plane including the rotating shaft 19, and are fixedly installed vertically through their respective central portions. Although the forms of these sludge water treatment tank 3 and stirring mechanism 4 are not fixed to those of the example, in order to achieve an effective stirring effect of sludge water and flocculant and form a good sludge floc, it is necessary to The water treatment tank 3 has a perfect circular tank shape (horizontal approximately cylindrical shape, in the case of the example, the capacity is 12
0(1) and the stirring blades 20.21 preferably have an inclined paddle shape. And stirring blade 20°21
When the blade is shaped like an inclined paddle, instead of fixing only one stirring blade to the rotating shaft 19, the stirring blade 20.21 is
It is preferable to fix two upper and lower plates. When two stirring blades (upper and lower) are fixed, the position of the stirring blades 20.21 on the rotating shaft 19 is such that the height of the center of the stirring blades 20.21 is approximately 0.2 mm (inner diameter) of the sludge water treatment tank 3. Heights such as those located at heights of 7 and 0.3 are preferred. In addition, when one stirring blade is used, it is preferable to fix it at a height of about 0.5 of the height of the sludge water treatment tank 3. In addition, the stirring blade 2 in the example
It is effective to set the length of 0.21 mm to 6001 cm, and it is also effective to set the rotation speed of the stirring mechanism 4 to 30 to 5 Qr, p, m.

As shown in FIGS. 6 and 7, the filtration device 5 includes a horizontal rotary filtration tube 24 made of mesh and rotationally driven by a motor (not shown), and a filtration tube disposed below the filtration tube 24. The water receiver is composed of a tank 25 and a sludge water intake pipe 47 inserted from one end of the rotary filtration cylinder 24 and having its tip positioned near the other end of the rotary filtration cylinder 24. The inner surface of the rotary filter cylinder 24 is provided with a spiral blade 23 for sending out sludge that continues from one end to the other. The one end is configured to be vertically movable about the other end so that the solid-liquid separation processing speed can be adjusted depending on the concentration and the like. Furthermore, the sludge water intake pipe 47 is connected to the sludge water treatment tank 3 via the cock 17 as described above, and is connected to the rotary filtration i'i? A separated sludge intake section 48 is arranged below one end (discharge end) of i24, and this separated sludge intake section 48 communicates with the separated sludge tank 6 via the cock 26. Further, the filtered water receiving tank 25 is connected to the suction and drainage hose via the pressure pump 8 and the cock 14 as described above.

Further, the NIFf mud tank 6 has a sludge discharge pipe 2 having a cock 28 communicating with the separated sludge discharge hose.
9, which communicates with the filtration device 5 via the cock 26 as described above, and also communicates with the pressurization/depressurization device 7 as described later. The separated sludge tank 6 is composed of one of two chambers formed by partitioning a single tank with a partition wall, and the other chamber constitutes the sludge water treatment tank 3.

Further, the pressurization/depressurization device 7 includes a vacuum pump 30, a four-way switching cock 31, and a three-way switching cock (pressure adjustment cock).
32 as the main body, and is equipped with a foil separator 33, an air cleaner 34, an air safety valve 49, etc. When the vacuum pump 30 is operated, the four-way switching cock 31
By switching and adjusting the three-way switching cock 32, the first terminal (pipe) 35 and the second terminal (pipe) are switched.
36 respectively to produce a pressurized pressure or a reduced pressure. The first terminal 35 communicates directly with the sludge water treatment tank 3 and the separated sludge tank 6 via a cock 37, a cock 38, and an air cleaner 39, and the second terminal 36 communicates with the sludge water treatment tank 3 through a cock 37, a cock 38, and an air cleaner 39. Water treatment tank 3
through the cock 37 to the separated sludge tank 6, and the cock 3 to the separated sludge tank 6.
8 and an air cleaner 39, respectively.

Therefore, according to such a configuration, the four-way switching cock 31
and switch and adjust the three-way switching conc 32 in the desired direction,
In addition, by opening or closing the cocks 37 and 38 as appropriate, the sludge water treatment tank 3 and the separated sludge tank 6 can be independently pressurized or depressurized. In particular, by switching and adjusting the three-way switching cock 32, the pressurization pressure of the sludge water treatment tank 3 can be adjusted at the same time as the pressure of the separated sludge tank 6 is reduced. Damage to the sludge flocs can be prevented, and the air in the separated sludge tank 6 can be discharged to create a vacuum while the discharged air can be sent under pressure to the sludge water treatment tank 3 and pressurized.

Further, the pressurizing/depressurizing device 7 is driven by the power device 46 via a belt 50 and a pulley 51, but when the unit of the present invention is mounted on a flat body vehicle 2, which is a freight vehicle, may be driven by the engine of the flat body vehicle 2. In addition, in FIG.
", 32" are operating levers of the four-way switching cock 31 and the three-way switching cock 32, respectively, and 52 is the pressure achieving needle of the sludge water treatment tank 3 and the separated sludge tank 6.

Further, the cleaning water tank 12 for cleaning inside the discharge hose is connected to the sludge discharge pipe 29 via a cock 40 and to the output side of the pressure pump 8 via a cock 41.

The vehicle-mountable sludge water treatment unit 1 having the above configuration is used by being placed in an appropriate manner at a location where treatment is required, or by being mounted on a flat body vehicle 2. As shown in FIGS. 8 and 9, loading onto the flat body vehicle 2 is carried out after placing the base 10 on the loading platform 60 of the flat body vehicle 2.
This can be done by removably fastening the base 10 to the frame 62 of the flat body vehicle 2 using a U-shaped bolt 61 passing through the base 10.

Next, a specific usage mode of the vehicle-mountable sludge water treatment unit 1 of the present invention will be described in the case where it is mounted on a flat body vehicle 2.

First, after driving the flat body vehicle 2 to the location where the septic tank is located, the suction and drainage hose is let out from the hose reel 1) and its tip is inserted into the sludge water of the septic tank, and then the sludge water treatment tank 3 is pressurized. The pressure is reduced by the pressure reducing device 7 and the cock 13
is opened and the sludge water is sucked and stored in the sludge water medium/control tank 3. Next, while closing the cock 13, the conch 16 is opened to suck and collect a predetermined amount of flocculant liquid from the flocculant liquid cock 9 into the sludge water treatment tank 3. When the suction and storage of the flocculant liquid is completed, the above-mentioned The cock 16 is closed, and the internal pressure of the sludge water treatment tank 3 is brought to atmospheric pressure by the pressurization/depressurization device 7.

Next, the stirring mechanism 4 is driven to stir and mix the sludge water and the flocculant liquid in the sludge water treatment tank 3, thereby forming treated water containing sludge flocs in the sludge water treatment tank 3.

Once treated water containing sludge flocs is formed, the internal pressure of the sludge water treatment tank 3 is increased by the pressurization/depressurization device 7, and the cock 17 is opened while adjusting the pressurized pressure to avoid damaging the sludge flocs as much as possible. is forced to be fed into one end of the rotary filtration cylinder 24 in the filtration device 5.

The pressure-fed treated water is separated into solid and liquid by the rotation of the rotary filter cylinder 24, and the filtered water after solid-liquid separation drips or flows into the filtered water receiving tank 25 below the rotary filter cylinder 24. At this time, the pressure pump 8 is driven and the cock 1 is
4 is opened, and the dripping or flowing filtrate water after solid-liquid separation is returned to the septic tank as water via the suction and drainage hose.

On the other hand, the sludge separated into solid and liquid by the rotary filter cylinder 24 is
The sludge is sent out by the spiral blade 23 and stored in the separated sludge tank 6 by keeping the cock 26 open from the other end of the rotary filtration cylinder 24. This accommodation may be carried out by gravity falling, but it can also be carried out by reducing the internal pressure of the separated sludge tank 6 using the pressurization/decompression device Wt7. The sludge in the separated sludge tank 6 is discharged to the sewage treatment plant.
Normally, the sludge water in a plurality of septic tanks can be treated as described above, and this operation can be carried out when the separated sludge tank 6 is full.
This can be done by increasing the internal pressure of the separated sludge tank 6 and opening the cock 28. By doing so, the sludge passes through the sludge discharge pipe 29 and is forced out through the separation sludge discharge hose which is wound around the discharge hose reel.

Furthermore, in order to prevent the concentrated sludge after solid-liquid separation from adhering to the inner surface of the separated sludge discharge hose and accumulating, and eventually clogging the separated sludge discharge hose and making it impossible to discharge, the separated sludge discharge hose is When cleaning, the separated sludge tank 6 is reduced to a vacuum using the pressurization/depressurization device 7, and the cock 40 is opened to suck the wash water in the wash water tank 12 for washing inside the discharge hose into the separated sludge tank 6. After the suction is finished, close the cock 40 to return the inside of the separated sludge tank 6 to atmospheric pressure, then pressurize the inside of the separated sludge tank 6 with the pressurization/depressurization device 7, and open the cock 28 to release the inside of the separated sludge discharge hose. The remaining sludge will be discharged while being washed. Note that water can be supplied to the cleaning water tank 12 for cleaning the inside of the discharge hose from another water source, and the separated water after solid-liquid separation can be
This can be done by opening the cock 41 and driving the pressure pump 8.

〔Effect of the invention〕

As mentioned above, the sludge water treatment unit such as a septic tank of the present invention can be mounted on a flat body truck, and is transported by the flat body vehicle to easily and reliably drain sludge water from multiple septic tanks, etc. Depending on the conditions of the location where the septic tank is installed, it can be installed for a certain period of time at a location that requires treatment without being mounted on the flat body vehicle, and the sludge water from the septic tank can be easily and reliably treated at that location. According to the sludge water treatment unit of the invention that can be installed in a car, sludge water from a septic tank, etc. is coagulated and solid-liquid separated at the location of the septic tank, etc., and the separated filtered water is directly returned to the septic tank, etc. On the other hand, effects such as being able to press out only the separated sludge and transporting it to a sewage treatment plant or the like and making it combustible are achieved.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a side view of an embodiment of the invention, Fig. 3 is a rear view of an embodiment of the invention, and Fig. 4 is a plan view of an embodiment of the invention. FIG. 5 is a schematic perspective view of a main part of a sludge water treatment system in an embodiment of the present invention. FIG. 6 is a schematic perspective view of a main part of a pressurization/depressurization system in an embodiment of the present invention. FIG. 7 is a perspective view of a rotary filtration tube of the filtration device according to an embodiment of the present invention, and FIG. 8 is a perspective view showing the installation of an embodiment of the present invention on a flat body vehicle. FIG. 9 is a schematic front view showing the attachment of an embodiment of the present invention to a flat body vehicle. 1... Sludge water treatment unit 2... Flat body vehicle 3... Sludge water treatment tank 4... Stirring mechanism 5... Filtration device 6... Separation sludge tank 7... Pressurization/depressurization Device 8...Pressure pump 10...Heath 12...Cleaning water tank 23 for cleaning the inside of the discharge hose...
Spiral blade 24...Rotary filter cylinder 32...Pressure adjustment cock 47...Sludge water intake pipe Patent applicant: Tokyu Vehicle Manufacturing Co., Ltd. Figure 6

Claims (1)

[Claims] (1) Can be mounted on a flat body vehicle, and can be transported by the flat body vehicle to treat sludge water from septic tanks, etc. at multiple locations, and must be treated without being mounted on the flat body vehicle. A sludge water treatment unit that is fixed at a location and processes sludge water from a septic tank, etc. at the location, and is installed at least through a suction and drainage hose on a base that can be removably placed on the loading platform of the flat body vehicle. A sludge water treatment tank equipped with an internal stirring mechanism that stirs and mixes sucked sludge water from a septic tank, etc. together with a flocculant, and sludge flocs treated in the sludge water treatment tank and pumped from the sludge water treatment tank. A filtration device that separates treated water into solid and liquid; a separated sludge tank that stores sludge after solid-liquid separation and presses out the sludge through a separated sludge discharge hose; A pressure pump that returns water to a septic tank or the like as filled water through a pump, and pressurization that separately pressurizes or depressurizes the internal pressure of the sludge water treatment tank and the separated sludge tank, and causes both tanks to perform suction or pressure feeding operations. - a pressure reducing device, and a wash water tank for cleaning the inside of the discharge hose that accommodates the wash water that is sucked into the separated sludge tank and then forced out from the separated sludge tank to clean the inside of the separated sludge discharge hose. The above-mentioned filtration device is equipped with a horizontal rotating filter cylinder made of mesh,
It consists of a filtered water receiving tank arranged below, and a sludge water intake pipe inserted from one end of the rotary filtration cylinder and having its tip positioned near the other end of the rotary filtration cylinder, The rotary filter cylinder has a spiral blade continuous from one end to the other end on its inner surface, and is configured to be able to rise and fall freely so that the one end moves up and down about the other end, and the above-mentioned pressure - A sludge water treatment unit that can be mounted on a vehicle, wherein the pressure reducing device has a pressure adjustment cock that can reduce the pressure of the separated sludge tank and at the same time pressurize the sludge water treatment tank while adjusting the pressurization pressure. (2) A vehicle-mountable sludge water treatment unit according to claim (1), wherein the base is removably fastened to the loading platform of the flat body vehicle using a U-shaped bolt;
) The pressure pump and the wash water tank for washing the inside of the discharge hose are connected so that filtered water after solid-liquid separation is also fed from the pressure pump to the wash water tank for washing the inside of the discharge hose. A sludge water treatment unit that can be mounted on a vehicle according to scope item (1) or item (2). (4) The base includes: a flocculant liquid tank that accommodates the flocculant to be sucked into the sludge water treatment tank; and a cleaning water injection nozzle for cleaning the outer peripheral surface of the rotary filter cylinder; a cleaning hose having a cleaning gun nozzle at its tip for cleaning the unit or any location in its vicinity; a high-pressure cleaning pump that pumps cleaning water from a cleaning water tank to the cleaning water injection nozzle and the cleaning hose; and the suction and drainage water pump. A hose reel for a suction and drainage hose around which a hose is wound, a hose reel for a separated sludge discharge hose around which the separated sludge discharge hose is wound, a hose reel for a cleaning hose around which the cleaning hose is wound, and a power unit for driving the pressurization/depressurization device. Further, the pressurizing/reducing device is configured to be driven not only by the power unit but also by the engine of the flat body vehicle when the unit is mounted on the flat body. A sludge water treatment unit that can be mounted on a vehicle according to any one of items (1) to (3). (5) Claim (1), wherein the stirring mechanism is constructed by fixing two inclined paddle-shaped stirring blades above and below a substantially vertical rotating shaft driven by a motor. The sludge water treatment unit that can be mounted on a vehicle according to any one of items (4).