KR20010107843A - A sludge treatment system - Google Patents

Abstract

The present invention relates to a mobile sludge treatment system that cleans and sucks sludge generated from water and sewage or rivers through a movable vehicle, and then dehydrates and transports the sludge to a final treatment plant. Vacuum cleaners for washing or washing cars, sludges accumulated in sewage pipes, suction cars for supplying washing water to the washing cars, and contaminants contained in sludges connected to the suction cars through a suction line and pumped from the suction cars. Separation car for filtering, which is connected to the separation car through a feeding line, and dewatering to dewater the sludge from which the contaminants are filtered and dewatered to separate it into semi-solid sludge and water, and vango which is dewatered and discharged from this dewatering car Including a carriage for loading and transporting sludge from the plant to the final treatment plant. By reducing the amount of sludge brought in, it is possible to reduce the cost of incineration and transportation, to simplify the transportation and incineration process, and to filter the bulky impurities contained in the suction sludge to facilitate the feeding and dewatering of the sludge. The water can be reused for cleaning.

Description

Mobile sludge treatment system {A sludge treatment system}

The present invention relates to a mobile sludge treatment system, and in particular, a sludge generated from water and sewage or a river can be cleaned and sucked through a movable vehicle, and then dehydrated in a semi-solid state to be transported to a final treatment plant. It's about the system.

Generally, various industrial sites such as water and sewage pipes, rivers, lakes, oil refineries, and chemical plants generate sludge from industrial waste.

The sludge contains heavy metals, organic materials and pollutants, which are not only harmful to the human body, but also cause environmental pollution. Therefore, the need for environmentally friendly treatment of sludge for the purpose of protecting the environment is one of international concerns. It is emerging.

Overview of the treatment system of such sludge improves the dewatering ability of the sludge concentrated in a state capable of being transported to the pump by chemical treatment or washing method, and then dehydrates the water content to 85% or less. .

Here, the dehydration process of sludge is dewatered by various methods such as vacuum filtration, pressure filtration and centrifugal dehydration, and the dehydrated sludge is transported to a final treatment plant and used as compost or feed depending on whether it can be recycled or disposed of in landfill, Incinerate through ocean dumping and other heat treatment.

On the other hand, in accordance with the recently signed international agreement, the dumping of sludge, including sludge, is completely prohibited. Therefore, the final treatment of sludge dredged in sewer pipes should be carried out through landfill or incineration.

However, the sewage pipes, rivers, livestock farms and other small industrial sites where sludges are generated do not have political facilities that can concentrate or dewater sludges, so the sludge generation site is a landfill or incineration plant. It is common to treat the sludge by incineration or landfill.

5 is a block diagram showing a conventional mobile sludge treatment system, in which sludge accumulated in the sewage pipe 101 is cleaned and sucked by the washing car 102 and the suction car 103.

That is, when the cleaning hose 104 is inserted into the sewage pipe 101 where the sludge is accumulated and the water supply pump 105 mounted on the cleaning vehicle 102 is operated, the water of the water supply tank 106 is connected to the cleaning hose 107. The sludge is sprayed at a high pressure through the cleaning nozzle 108, and thus the sludge adhering to the tube wall is peeled off to obtain a good suction, and the tube wall is also cleanly cleaned.

Then, the suction hose 109 is inserted into the sewage pipe 101, and then the suction mechanism 110 is operated to form a vacuum in the sludge tank 111. The sludge tank 103 mounted on the suction vehicle 103 through the vacuum hose that turns. The accumulated sludge is transferred to the dehydration treatment facility or the final treatment plant 112 through a vacuum suction vehicle, and finally treated by landfill or incineration.

However, since the sludge accumulated in the sludge tank 111 is processed in the final treatment plant 112 without undergoing a separate dehydration process, the incineration efficiency is low even if incineration is impossible or incineration is possible due to high moisture content, and pretreatment for incineration is performed. There was a problem that the cost of incineration increased.

In addition, since the water content of the sludge is high, there is a problem in that the amount of sludge to be transported to the final treatment plant 112 increases, thereby increasing the transportation cost.

In addition, the sludge contained bulky contaminants such as sand, gravel, sanitary ware, etc., and there was a problem in that the dewatering operation could not be smoothly performed in the final treatment plant.

On the other hand, the washing water for cleaning has a problem in that the washing water supply cost increases because the whole amount must be supplied through the washing water supply difference.

The present invention has been made to solve the problems described above, by reducing the amount of sludge brought into the treatment plant by dewatering the sucked sludge into a low water content through the dewatering aberration can reduce the incineration treatment costs and transport costs. In addition, the aim is to provide a mobile sludge treatment system that facilitates transport and incineration.

Another object of the present invention is to remove the bulky contaminants contained in the suction sludge to facilitate the feeding and dewatering of the sludge and to reuse the dewatered water in the washing operation. To provide a treatment system.

1 is a block diagram showing a mobile sludge treatment system according to the present invention,

Figure 2 is a process chart for showing the operating state of the movable partition provided in the suction car in the present invention,

Figure 3 is a process chart for explaining the operation of the dehydration in the present invention,

4 is a block diagram showing another embodiment of the mobile sludge treatment system according to the present invention as shown in FIG.

5 is a block diagram showing a conventional mobile sludge treatment system as shown in FIG.

Explanation of symbols on the main parts of the drawings

1: sewer pipe 2: cleaning hose

3: suction hose 4: pressure feeding line

5: cleaning nozzle 6: water supply line

7: drainage line 10: washing car

11: washing water tank 12: washing pump

20: suction car 21: storage tank

21a: Onijo 21b: water tank

22: suction mechanism 23: actuator

24: movable partition 25: through hole

26 filter 27 flow controller

30: discrimination 31: vibration screen

32: Miscellaneous Hopper 33: Oni Hopper

34: pump pump 40: dehydration

41: coagulation tank 42: reaction tank

43: dehydrator 44: transfer conveyor

45: drainage tank 46: drainage pump

50: carrier 60: treatment plant

150: contaminant 200: flocculant

Sludge treatment system of the present invention for achieving the above object is a washing car for spraying high pressure water to the sewage pipe to remove or clean the sludge attached to the pipe wall, and a suction car for vacuum suction of the sludge accumulated in the sewage pipe, Connected to the suction car through the pumping line, the dewatering aberration to separate the semi-solid sludge and water to be dewatered by receiving the sludge hostile to the suction car, and the semi-solid sludge which is dewatered and discharged from the dewatering car and loaded into the final treatment plant It includes a carriage for transporting.

The suction vehicle includes a storage tank, and the storage tank is divided into a sludge tank for storing sludge sucked by the movable partition and a fresh water tank for storing water supplied from the outside and water dewatered from the sludge sucked from the outside.

The dewatering aberration includes a dehydrator for dewatering sludge and semi-solid sludge and water, and a conveying conveyor for transporting the dehydrated semisolid sludge to a transport vehicle.

In addition, in the feed line connecting the suction car and the dehydrator, a fractionation difference for filtering the contaminants contained in the sludge that is pumped from the suction car is installed.

The fractionation difference is a vibration screen for filtering the contaminants in the sludge pumped from the suction car, a contaminant hopper and sludge hopper for storing the scum and sludge classified in the vibrating screen, respectively, and pressure pumping the sludge stored in the sludge hopper to the dehydrator It is a pressure pump.

On the other hand, the fresh water tank and the dehydrator of the storage tank is connected to the washing car through a water supply line and a drain line so that the water stored in the fresh water tank and the drain tank can be used as the washing water.

According to the present invention made as described above, the sludge vacuum sucked through the suction car is dehydrated in the suction car and the dehydration wheel to lower the moisture content, it is easy to incineration and transport, can reduce the incineration and transport costs, fractionation difference The bulky contaminants are filtered through to facilitate the pumping and dewatering of the sludge by the pump.

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

1 is a block diagram showing a mobile sludge treatment system according to the present invention, Figure 2 is a process diagram for showing the operating state of the movable partition provided in the suction vehicle in the present invention, Figure 3 is a process of operation of the dewatering wheel in the present invention This is a process chart for explaining.

As shown, in the sludge treatment system of the present invention, one end of the cleaning hose 2 and the suction hose 3 is inserted into the sewage pipe 1, and the cleaning car 10 is connected to the other end of the cleaning hose 2. By spraying high pressure washing water, the sludge accumulated or adhered to the pipe wall can be washed and peeled off, and the suction car 20 is connected to the other end of the suction hose 3 to suck the sludge under vacuum. have.

Then, the dehydration aberration 40 is connected to the suction car 20 via the pressure feed line 4 so that the dewatering sludge including the water sucked in the suction car 20 can be pressed to dehydrate the water. As described above, the semisolid sludge having a low moisture content is transported to the transport vehicle 50 so as to be transported to the final treatment plant 60.

The washing vehicle 10 is to wash and peel off sludge accumulated or adhered to the pipe wall by spraying the washing water of high pressure, the washing water tank 11 for storing and supplying the washing water, and stored in the washing water tank 11. It comprises a cleaning pump 12, such as a plunger pump (Plunger pump) for pumping water to supply high-pressure cleaning water through the cleaning hose (2).

Here, a cleaning nozzle (6) is provided at the tip of the cleaning hose (2), and the cleaning nozzle (6) has a rotatable structure so that the entire inside of the pipe can be evenly cleaned, while the inside of the inside of the pipe is blocked while being washed. I can do it.

In addition, the water stored in the washing water tank 11 may be supplied through a separate washing water supply vehicle (not shown), but is connected to the suction vehicle 20 to receive the dehydrated water from the sludge and to clean the water. It is desirable to make it available again.

The suction car 20 is for sucking the sludge accumulated in the sewage pipe 1 and vacuuming the sludge accumulated in the sewage pipe 1 so that the suction car 20 can be reused in the cleaning operation. The storage tank 21 and the suction mechanism 22, such as the vane pump which forms a vacuum pressure in this storage tank 21, are comprised.

Here, one side of the storage tank 21, the actuator 23, such as a cylinder driven by hydraulic or pneumatic, and the storage tank 21 is built in the storage tank 21 while being installed at the tip of the actuator 23 The movable partition 24 which divides into the sludge tank 21a and the fresh water tank 21b is comprised.

A through hole 25 is formed above the movable partition 24 to allow the liquid on the sludge tank 21a side to pass to the fresh water tank 21b side, and the through hole 25 has foreign matter in the through liquid. The filter 26 for filtering the oil and the flow regulator 27 for adjusting the flow of the passing liquid are provided.

Here, the fresh water tank 21b of the storage tank 21 is connected through the washing car 10 and the water supply line 6 so that the water stored in the fresh water tank 21b can be used for the cleaning operation. have.

In addition, the suction mechanism 22 for forming a vacuum pressure to suck and store the sludge in the storage tank 21 is a blower (blower) in addition to being made through a vacuum pump such as a vane pump, a plunger pump. It can also be made through).

The dewatering aberration 40 is connected to the sludge tank 21a of the suction car 20 through the pressure feed line 4 to dewater the sludge having a high moisture content that is pumped from the sludge tank 21a through the pressure feed line 4. It is to make it semi-solid.

The dewatering aberration 40 is a plurality of flocculation tank 41 for agglomerating the sludge by injecting the flocculant 200 to the sludge 100 fed from the sludge tank 21a via the pressure feed line (4), A coagulation agent 200 fed from the coagulation tank 41 and a coagulation agent 200 supplied from the reaction tank 42 to cause coagulation by mixing and mixing the coagulant 200 pumped from the coagulation tank 41 and the sludge pumped from the sludge hopper 33. It comprises a dehydrator 43 for desorbing sludge with low water content sludge and water, and a conveying conveyor 44 for transferring the sludge discharged from the dehydrator 43 to the transport vehicle (50).

The dehydrator 43 shown in FIG. 3 preferably uses a centrifugal type for separating sludge into semi-solid sludge and water using centrifugal force.

In addition, one side of the dehydrator 43 is provided with a drain tank 45 in which dehydrated water is drained and stored, and the drain tank 45 has a drain pump 46 for pressurizing the stored water.

Here, the water pumped from the drain pump 46 is discharged to the sewage pipe 1 through the drain line 7 or supplied to the washing water tank 11 of the washing vehicle 10 through the drain line 7. The dehydrated water can then be used for cleaning operations.

On the other hand, Figure 4 shows another embodiment of the mobile sludge treatment system according to the present invention, the fractionation car 30 is further connected to the pressure feed line (4) connecting the suction car 20 and the dewatering car (40) It is to be able to filter the bulky contaminants 150.

That is, the fractional difference 30 filters the bulky contaminants 150, such as sand, gravel, and sanitary products, that are contained in the sludge that is pumped from the suction car 20 to the dehydration car 40 to prevent the sludge from being sucked and dehydrated. It is to make it smooth.

Here, the fractional difference 30 is a vibration screen (31) for filtering the contaminants (150) in the sludge that is pumped from the suction car 20, and the contaminants (150) classified and dropped in the vibration screen (31) And a contaminant hopper 32 and a sludge hopper 33 for storing sludge and a sludge hopper 33, and a pressure pump 34 for pressurizing the sludge stored in the sludge hopper 33 to the dewatering aeration 40.

The sludge pumped by the pressure pump 34 is supplied to the dehydrator 43 of the dehydration wheel 40 through the pressure feed line 4 to be separated into semi-solid sludge and water as described above.

The cleaning operation by the mobile sludge treatment system of the present invention made as described above is as follows.

Piping in advance to the wash water tank 11 and the external water pipe or the suction car 20 or / and the dehydration car 40, and then inserts the cleaning hose (2) connected to the wash water tank 11 into the sewer pipe (1) After that, the cleaning pump 12 is driven.

As the washing pump 12 is driven, water stored in the washing water tank 11 is pressurized and sprayed through the washing nozzle 6 through the washing hose 2.

As such, sludge accumulated or adhered to the pipe wall by the washing water sprayed at the high pressure from the washing nozzle 6 is peeled and washed to be sucked and transported by the suction difference 20.

In addition, since the cleaning nozzle 6 has a rotatable structure as described above, it is possible to clean the entire inside of the pipe evenly and to perform the cleaning work while penetrating the entire inside of the pipe.

Referring to the process of dehydration and transport to the final treatment plant 60 from the suction process of the sludge accumulated in the sewage pipe (1) according to the present invention.

First, as shown in FIGS. 1 and 2, the suction of the sludge by the suction vehicle 20 receives power through a PTO (Power Take-Off) shaft, and when the suction mechanism 22 is driven, the suction tank 22 is transferred to the storage tank 21. The vacuum pressure is formed, and the sludge is sucked by the vacuum pressure thus formed and accumulated in the sludge tank 21a of the storage tank 21.

In addition, water for washing from the outside is stored in the fresh water tank 21b of the storage tank 21 through the water supply line 6, and the water stored in the fresh water tank 21b is washed with the water supply pump 26. The pump is pressurized by the tank 11 and reused for the cleaning operation.

As described above, the volume ratio of the sludge tank 21a and the fresh water tank 21b can be adjusted by supplying the water stored in the fresh water tank 21b to the washing car 10 and operating the movable partition 24.

Here, when the movable partition 24 is operated in a direction in which the volume of the sludge tank 21a is increased, suction work of the sludge can be efficiently performed, and the water of the sludge tank 21a is used for the washing operation by the filter 26. By filtering toward the fresh water tank 21b in a possible state, the supply amount of the washing water can be increased.

Then, when the movable partition 24 is operated in the direction of reducing the volume of the sludge tank 21a, the sludge floating in the upper portion of the sludge tank 21a is pumped to the dewatering aberration 40 through the feed line 4, The sand or stone deposited on the bottom of the sludge 21a is discharged to the outside through a discharge line (not shown) and recovered.

On the other hand, the sludge pumped from the sludge tank 21a through the pressure feed line 4 is separated into semi-solid sludge and water in the dewatering wheel 40.

Here, before the dehydration process by the dehydration aberration 40, the fractionation process by the separation difference 30, which is another embodiment of the present invention will be described first.

That is, the sludge supplied from the sludge tank 21a to the dewatering furnace 40 includes sand, stones, sanitary napkins, and other contaminants 150 that are not completely discharged from the sludge tank 21a. Before the dehydration in the filter is separated in advance in the separation (30), thereby preventing the contaminants (150) to interfere with the feed by pinching the feed line (4) or to be caught in the dehydrator (43) to make the dehydration work difficult Will be.

When the fractionation process is described in detail, the sludge including the contaminant 150 supplied from the sludge 21a is vibrated by the vibrating screen 31 of the liquid sludge as the vibrating screen 31 mounted on the fractionation vehicle 30 vibrates. After passing through and stored in the sludge hopper 33 installed at the bottom, the bulky contaminants 150 do not pass through the vibrating screen 31 and are classified according to the vibration of the screen 31 to the contaminant hopper 32. Stored.

As described above, the junk 150 stored in the junk hopper 32 is loaded in a separate transport vehicle 50 and transported to a final treatment plant 60 to undergo a process such as incineration, and the junk 150 is removed. After being stored in the hopper 33 is pumped to the dehydration wheel 40 through the pressure pump 34 is subjected to the dehydration process.

As shown in FIG. 3, the dehydration process by the dewatering aberration 40 is a flocculant that is fed from the sludge tank 21a or the sludge hopper 33 through the feeding line 4 and the sludge is fed from the flocculation tank 41. It is mixed with (200) and conveyed to the reaction tank (42).

The sludge including the flocculant 200 pumped into the reaction tank 42 is supplied to the dehydrator 43 after the flocculation reaction is made while mixing evenly through the stirring process.

The flocculated sludge supplied to the dehydrator 43 is dehydrated by centrifugation or other methods to separate the sludge with low water content and water.

The dewatered water from the dehydrator 43 is drained into the drain tank 45 and then pumped by the drain pump 46 and supplied to the washing vehicle 10 via the drain line 7 to be used as washing water or sewage pipe ( Discharged to 1).

The sludge discharged into the semisolid with a low water content from the dehydrator 43 is transferred to the transport vehicle 50 through the transport conveyor 44.

As such, the semi-solid sludge loaded on the transport vehicle 50 is transported to the final treatment plant 60 to be landfilled or incinerated, or used as a fertilizer to complete the sludge treatment operation.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the technical idea of the present invention.

For example, FIG. 3 showing an embodiment of the above-described dehydrator 33 shows the use of a centrifugal type for separating semi-solid sludge and water using centrifugal force. In addition to the centrifugal separation, a horizontal centrifugal separation may be used.

In addition to the centrifugal separation type described above, the belt or belt press for dewatering the sludge between the upper and lower filter cloths at a constant pressure, or the coarse particles 150 having relatively coarse particles, is applied to the filter cloth by a vacuum pump. It can be considered as a dehydrator of various methods such as vacuum filter method and other screw press method that uses the pressure difference between the two sides of the filter cloth, and it has different operating conditions and characteristics. It is preferable to carry out.

According to the portable sludge treatment system of the present invention made as described above, it is possible to reduce the amount of sludge brought into the final treatment plant by making the sludge as a semisolid having a low water content at the sludge generating place.

As a result, incineration can be easily performed to reduce the incineration treatment cost, and the number of times of transport can also be reduced, thereby reducing the transportation cost.

In addition, since the dewatered water from the sucked sludge can be reused in the cleaning operation, the water cost required for the cleaning operation can be reduced.

And, by filtering the bulky contaminants before dewatering through a vibrating screen it is possible to achieve the effect of smoothing the pumping and dewatering of the sludge by the pump.

Claims (7)

Washing car 10 for peeling or cleaning sludge adhered to the pipe wall by spraying high pressure water to the sewage pipe (1); and A suction car 20 for sucking the sludge accumulated in the sewer pipe 1 by washing and supplying the washing water by connecting a water supply line 6 to the washing car; A dewatering aeration 40 connected to the suction vehicle 20 through a pressure feeding line 4 for dewatering the sludge loaded on the suction vehicle 20 and separating the semi-solid sludge with water; And Mobile sludge treatment system comprising a transport vehicle 40 for loading and transporting the semi-solid sludge to be dewatered and discharged from the dewatering car (30) to the final processing plant (50). The suction car (20) according to claim 1, wherein the suction car (20) includes a movable partition (24) and a sludge tank (21a) for sucking and storing vacuum sludge accumulated in a sewer pipe and a fresh water tank (21b) for storing fresh water. Partitioned storage tank 21; and A suction mechanism 22 connected to the storage tank 21 to form a vacuum pressure for sucking the sludge; And The storage tank 21 is installed on one side of the sludge treatment system, characterized in that it comprises an actuator (23) for driving the movable partition (24). According to claim 1 or 2, The dewatering aberration 30 is a plurality of flocculation tank 31 for supplying the flocculant 200 to the pressure feeding line (4); And A reaction tank 32 for mixing and flocculating flocculant 200 and sludge fed through the pressure feeding line 4; A dehydrator 33 for dewatering the sludge in the aggregated state supplied from the reactor 32 and a transfer conveyor 34 for transferring the semi-solid sludge discharged from the dehydrator 33 to the transport vehicle 40. Removable sludge treatment system comprising a. The mobile sludge treatment system according to claim 3, wherein the dehydrator is a centrifugal dehydrator. The drainage tank 35 having a drainage pump 36 for storing and pumping the dehydrated water is installed at one side of the dehydrator 33, and the drainage pump 36 has a drainage line 6. Sludge treatment system, characterized in that connected to the washing water tank (11) to use the dehydrated water as the washing water. According to claim 1, wherein the suction line 20 and the dehydrator 40 is connected to the pressure line 4, the fractionation difference 30 for filtering the contaminants contained in the sludge pumped from the suction car 20 further Mobile sludge treatment system characterized in that configured by connecting. The method of claim 1, wherein the fractional difference 30 is a vibrating screen 31 for filtering the debris in the sludge conveyed from the suction car 20, and the contaminant and the sludge classified in the vibrating screen 31, respectively Removable sludge, characterized in that it comprises a compact hopper 32 and the sludge hopper 33 to store, and a pressure pump 34 for pumping the sludge stored in the sludge hopper 33 to the dewatering aberration 40. Processing system.