JP4158196B2 - Sediment pressure feeding method and pressure feeding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, foreign matter staying in a water conduit such as a sewer at the beginning of rainfall temporarily flows into the pump facility at a high concentration. The present invention relates to an improvement in a method and a pumping device for transferring the high-concentration residue to a subsequent process.
[0002]
[Prior art]
In sewerage pumps, in particular, confluence type pumps, foreign substances staying in the water conduit at the beginning of rainfall often flow down at a high concentration temporarily to the pump equipment. If the pump operation is performed without removing the foreign matter, the impeller part easily clogs the pump, and the pump operation cannot be continued. It is necessary to remove before the pump flows in, and a dust remover is generally used as the removal equipment, and the separated foreign matter is called scum. This residue is rich in moisture, easily perishes, and has a strong odor, making it difficult to handle. In the event of off-site disposal, the surrounding environment may be adversely affected.
[0003]
In sewage pump facilities such as diverted water and small-flow sewage and relay pump stations and manhole pump stations, a crushing machine is installed in front of the pump water tank to absorb and pump foreign matter together with sewage. There are many cases. In the case of the combined type, it is not carried out in consideration of prevention of pollution or pollution of public water due to blockage of pumps and pipelines due to high concentration residue and discharge destination load. Further, the flow of the high concentration residue is about 30 minutes to 1 hour at the beginning of the rain, and the concentration is generally low thereafter. A crusher installed in front of the pump water tank is a device for transferring the residue as a slurry to the separator by connecting a jet pump to the crusher recovered from the sedimentation basin and crushing the residue. Patent Document 1 describes this. Further, as described in Patent Document 2, a device is also known in which the collected residue is pumped to the residue storage hopper by a piston pump after being put into the adjustment tank.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-199047 (paragraph number 0007, FIG. 1)
[Patent Document 2]
Japanese Patent Laid-Open No. 11-342306 (paragraph number 0015, FIG. 1)
[0005]
[Problems to be solved by the invention]
In the above-mentioned conventional apparatus, the residue lifted up by the dust remover is crushed by the crusher, and sucked and pumped by the pump. However, even in this case, if the concentration is too high, the pump is clogged. When the residue is mixed into the adjustment tank, the residue floats on the water surface and forms a scum, which is detrimental to pumping. Basically, facilities and systems could not be constructed in a sealed state, and the odor of the residue could adversely affect the surrounding environment. It is an object of the present invention to provide a method and a pressure feeding device of a residue that can adjust the residue flowing down at a high concentration temporarily, avoid clogging of the water supply pump, and at the same time prevent the bad smell of the residue.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned purpose, the method of pumping the scum is to collect and crush the slag that flows into the pump equipment, temporarily stores it, It is press-fitted and pumps the residue together with the pump discharge water to the destination. Since the residue does not pass through the pump, blockage of the pump and damage to the impeller can be prevented. Specifically, the high-concentration residue at the beginning of the rain is raked up with a dust remover, crushed in a shape suitable for transport with a crusher, temporarily stored in a hopper, and the stored slag is used as a discharge pipe for a water pump. It can be press-fitted and averaged by reducing the inflow concentration of the residue, and it can cope with the inflow of a large amount of residue at the initial stage and does not require a special deodorizing device.
[0007]
The pressure feeding device for carrying out the method for pressure-feeding the debris transfers the debris flowing into the pump equipment to the subsequent process. In the debris pressure-feeding device, a dust remover is disposed in front of the water absorption tank. A crusher that crushes the residue left in the shape suitable for transport, a hopper that temporarily stores the crushed residue, a residue press-in pump that extracts the residue stored in the hopper, and is installed in the water absorption tank. By connecting a residue press-fitting pump to the discharge pipe of the water pump, and crushing the crushed residue together with the discharge water of the water pump to the destination, it is not necessary to carry it out of the building and can be consolidated in the pump facility. Become. The work is hygienic without polluting the surrounding environment. In addition, a water supply pipe that supplies water to the sewage treatment plant and a drain pipe that drains water into public water areas are branched and connected to the discharge pipe of the water pump, and an open / close valve is provided on the water supply pipe and the drain pipe. In this case, it is necessary to remove the residue to the ground part, but the carry-out equipment, space, and deodorizing device do not become excessive. In addition, you may connect the residue press-fit pump connected with the discharge piping of a water supply pump to the front-end part of the water supply pipe which supplies water to a sewage treatment plant.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The screen residue pumping method and device according to the present invention are configured as described above. First, the screen residue is lifted up by a dust remover installed on the inflow side and separated from the inflow water. The water from which the debris is separated does not contain debris and does not block the pump, which is a detrimental effect for pumps that send water to public water bodies and sewage treatment plants. The residue collected by the dust remover is crushed by a crusher into a shape suitable for conveyance and temporarily stored in a hopper. The role of this hopper is to reduce the inflow concentration and to average it, because if it is high concentration at the beginning of rainfall and crushing and sending all the residue, it will become too high and may cause clogging in the pipe. The residue stored in the hopper is press-fitted into a pump discharge portion of the water pump by a residue press-fitting pump or the like, mixed with the pump water, and pumped to a predetermined portion. Since the residue does not pass through the pump, there is no blockage of the pump and damage to the impeller.
[0009]
【Example】
An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram of a residue pumping system, in which a dust remover 3 is installed in a water conduit 2 on the inflow side of a pump facility 1, and in the initial stage of rainfall. In about 30 minutes to 1 hour, the foreign matter staying in the upstream water conduit 2 temporarily flows down at a high concentration. The residue is lifted up by the dust remover 3 and separated from the influent water. The water from which the residue is separated does not contain the residue of the pump and does not contain the residue. The drainage pumps 5 and 6 installed in the water absorption tank 4 are not blocked, the impeller is not damaged, and flows into the pump water absorption tank 4. Water to be discharged into public water areas 7 such as rivers.
[0010]
The residue scraped up by the dust remover 3 is conveyed by the conveyor 8 and supplied to the crusher 9. The residue is crushed into a shape suitable for conveyance and temporarily stored in the hopper 10 of the storage facility. The role of this hopper 10 is installed in order to temporarily store a high concentration residue in the initial stage of rainfall and to reduce the inflow concentration of the residue in the water supplied to the destination and to average it. A residue press-fitting pump 11 is disposed in a hopper 10 for storing residue, and a pressure feed pipe 12 of the residue press-fitting pump 11 is connected to a discharge pipe 14 of one water pump 13 installed in the water absorption tank 4. . The residue is press-fitted into the discharged water, and the residue is prevented from passing through the portion of the impeller where the water pump 13 is easily blocked.
A water supply pipe 16 for supplying water to the sewage treatment plant 15 and a drain pipe 17 for draining water to the public water area 7 are branched and connected to the discharge pipe 14 of the water pump 13, and on-off valves 18 and 19 are connected to the water supply pipe 16 and the drain pipe 17. Is arranged. The pair of on-off valves 18 and 19 are switched so that the water pump 13 can be used for draining into the public water area 7 when no residue flows.
[0011]
The high-concentration residue that flows in at the beginning of the rain is stored in the hopper 10 and is pressed into the discharge pipe 14 of the water feed pump 13 by the residue press-in pump 11 disposed in the hopper 10 to reduce the inflow concentration of the residue and average it. The mixture is mixed with the discharge water of the water pump 13 and pumped to the sewage treatment plant 15 on the ground. Since it is temporarily stored in the hopper 10, the residue in the discharged water due to crushing and pumping of the entire amount does not become high in concentration, and the discharge pipe 14 and the water supply pipe 16 are not blocked. The pressure feed pipe 12 of the residue press-fitting pump 11 may be connected to the front end of the water feed pipe 16 for feeding water to the sewage treatment plant 15.
[0012]
【The invention's effect】
The present invention is configured as described above, and tends to occur at the beginning of rainfall at a confluence pump station, temporarily adjusting the sediment flowing down at a high concentration, avoiding blockage of the water pump, and simultaneously It is possible to prevent the foul odor of the residue and to provide a method and device for compressing the residue. In other words, the above conventional device crushes the residue left by the dust remover with the crusher, and sucks and pumps it with the pump. There was an obstruction. When the residue is mixed in the adjustment tank, the residue floats on the water surface and forms a scum, which is detrimental to the pumping. The entire amount is crushed into a shape suitable for transportation, temporarily stored, and the crushed residue is pressed into the discharge pipe side of the water pump installed in the water absorption tank and pumped to the destination together with the water discharged from the water pump. Without clogging, the inflow concentration of the residue can be reduced and averaged. Further, it is not necessary to carry out from the building, and the central processing can be performed by the pump equipment. No special deodorizing device is required, and the work is hygienic without violating the surrounding environment. In addition, since the water supply pipe for supplying water to the sewage treatment plant and the drain pipe for draining to the public water area are branched and connected to the discharge pipe of the water pump, even if the residue is discharged from the deep equipment to the ground, Space does not become excessive.
[Brief description of the drawings]
FIG. 1 is a schematic view of a residue pressure feeding system according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pumping equipment 3 Dust remover 4 Water absorption tank 7 Public water area 9 Crusher 10 Hopper 11 Sludge press-fitting pump 13 Water pump 14 Discharge pipe 15 Sewage treatment plant 16 Water pipe 17 Drain pipes 18, 19 On-off valve

Claims (5)

The residue flowing into the pump facility (1) is collected, crushed and temporarily stored, and the crushed residue is pressed into the discharge pipe (14) side of the water pump (13) so that a constant concentration is obtained. A method for pumping debris, wherein the debris is pumped to the destination together with the discharged water. High concentration of sediment at the beginning of the rain is raked up with a dust remover (3), crushed into a shape suitable for transport with a crusher (9), temporarily stored in a hopper (10), and the stored residue is sent to a water pump ( The method for pumping a screen residue according to claim 1, wherein the discharge pipe (14) of 13) is press-fitted with a screen pressure injection pump (11), and the inflow concentration of the screen residue is reduced and averaged. In the pressure pumping device for transferring the residue flowing into the pump facility (1) to the subsequent process, a dust remover (3) is disposed in front of the water absorption tank (4), and the dust remover (3) A crusher (9) that crushes the fried residue into a shape suitable for conveyance, a hopper (10) that temporarily stores the crushed residue, and a residue press-in pump ( 11), and a residue press-fit pump (11) is connected to the discharge pipe (14) of the water pump (13) installed in the water absorption tank (4), and the residue is crushed together with the discharge water of the water pump (13). A stag residue feeding device characterized by feeding to a destination. A water pipe (16) that feeds water to the sewage treatment plant (15) and a drain pipe (17) that drains water to the public water area (7) are branched and connected to the discharge pipe (14) of the water pump (13). 4. A residue pumping device according to claim 3, wherein on-off valves (18, 19) are arranged on (16) and the drain pipe (17). The residue press-fitting pump (11) connected to the discharge pipe (14) of the water pump (13) is connected to the front end of the water pipe (16) for draining to the sewage treatment plant (15). Item 5. The apparatus for pumping residue according to item 3 or 4.

Images