JP2003001283A - Sewage cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable clogging state of a carrier to be timely recognized. SOLUTION: A swage cleaning device is provided with a cleaning tank 101 and a carrier 111 which is accommodated in the cleaning tank 101 and carries microorganisms and the sewage is cleaned due to decomposing ability of the microorganism by making the sewage pass through the carrier 111. Further the carrier 111 can be moved in the cleaning tank 101 and a beacon body 60 extending to the outside of the cleaning tank 101 is disposed so as to be linked with movement of the carrier 111. When the carrier 11 floats up by pressure loss caused by clogging of the carrier 111, the beacon body 60 extends out from the cleaning tank 101 and a coated part 66 of the beacon body 60 is enabled to be easily recognized from the outside.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage purification apparatus, and more particularly to a sewage purification apparatus for purifying sewage by the resolution of microorganisms. 2. Description of the Related Art In a sewage purification apparatus for purifying sewage by the resolution of microorganisms, microorganisms are contained in a purification tank.
It is carried on activated carbon and other carriers, and when sewage passes through the carrier, the polluted components contained in the sewage first adsorb and adhere to the carrier, and a considerable amount of them are then degraded by microorganisms. And the wastewater is purified. [0003] The pollutant components in the sewage are:
First, since the carrier adheres to the carrier, the purifying ability decreases in proportion to the progress of the clogging of the carrier. Therefore, when clogging of the carrier has progressed to a predetermined degree, it is required that the administrator can easily detect the progress. [0004] Therefore, an object of the present invention is to provide a sewage purification apparatus capable of meeting such a demand. [0005] The first technical means taken to solve the above-mentioned technical problem is, as set forth in claim 1, "a septic tank and a container contained in the septic tank and In a sewage purification apparatus comprising a carrier carrying microorganisms and purifying the sewage by the resolution of the microorganisms by passing sewage through the carrier, the carrier can be shifted in the purification tank. And a marker extending to the outside of the septic tank is provided so as to interlock with the displacement of the carrier. In the sewage purifying apparatus according to the first aspect of the present invention, when the carrier floats due to pressure loss caused by clogging of the carrier, the marker extends from the septic tank. Therefore, by recognizing the sign that has emerged outside this septic tank,
Timely action can be taken to eliminate clogging of the carrier. [0007] A specific example of a sewage purification apparatus according to the present invention will be described with reference to the accompanying drawings. In FIG. 1, the sewage purification apparatus includes an oil / water separation tank 5 (volume: about 3 cubic meters). One end of a pumping pipe 38 provided with a pumping pump 58 is connected to the lower inlet of the oil / water separation tank 5. And the pumping pipe 3
The other end of the hose 8 extends into a groundwater vein (not shown).
0a, and when the pump 58 is driven, the sewage pumped from the groundwater vein is drained from the oil-water separation tank 5.
It is designed to flow in. In the oil / water separation tank 5, there is provided a float funnel 51 which floats on sewage. Float funnel 51
Is connected to an oil storage tank 54 (volume: about 0.2 cubic meter) via a pipe 53 provided with a connecting hose 52 and an on-off valve 53a. A float switch 56 is provided in the oil / water separation tank 5, and the float switch 56 is electrically connected to a control circuit 57. Thus, when the amount of sewage stored in the oil-water separation tank 5 reaches a predetermined value and the water level accompanying the water exceeds a predetermined value, a signal is sent from the float switch 56 to the control circuit 57, and the control circuit 57 The operation of 58 is stopped to interrupt the flow of sewage into the oil / water separation tank 5. The outlet of the oil / water separation tank 5 is connected to the upper inlet of the purification tank 1 via an inflow pipe 32 provided with an oil-suitable removal filter 37 and an automatic flow control valve 34. A pair of carriers 11 carrying microorganisms are accommodated in the first septic tank 1 in a superimposed manner (arranged in the up-down direction), and the first septic tank 1 is adsorbed by the carrier 11.・
Soil water is continuously purified using the resolution of microorganisms. Thus, the sewage purified in the first septic tank 1 passes through the carrier 111 in the second septic tank 101, and is then returned to the groundwater vein via the pipe 33 or used as middle tap water. It has become. The details of the first septic tank 1 and the second septic tank 101 will be described with reference to FIGS. Inside the first septic tank 1, there is provided a float switch 156 that floats on the inflowing wastewater.
When the water level exceeds a predetermined level, this float switch 1
Depending on the signal from 56, the controller 157
4 to close the valve. Thereby, the inflow of sewage is restricted, and overflow is prevented. First
The sewage flowing into the septic tank 1 is separated by a pair of carriers 11
During the passage from above to below, the polluted components in the sewage adhere to the carriers 11 and are sequentially decomposed, so that they are systematically purified. The upper opening of the first septic tank 1 is normally closed by the lid 18, but is opened when the microorganism solution is charged and when the carriers 11 are inserted and removed. Similarly, the upper opening of the second septic tank 101 is normally closed by the lid 110, but is opened when the microorganism solution is charged and when the carrier 111 is inserted and removed. The support 11 on which the microorganisms are supported is activated carbon particles having a size (mesh size) of about several millimeters. As shown in detail and clearly in FIGS. Is filled. That is, the inner basket 90
Is a bottomed container made of stainless steel, and four fan-shaped openings 91 are formed in the bottom wall at the lower end in the axial direction. A mesh 12 is placed on the lower end side inside the inner basket 90, and a predetermined amount of activated carbon particles are deposited and filled on the mesh 12 to form the carrier 11. A mesh 12 fitted in the upper end opening of the inner basket 90 is disposed on the deposited and filled support 11 serving as activated carbon particles. Thus,
The carrier 11 is filled in the inner basket 90. The lower part of the pair of inner baskets 90 in which the carrier 11 as the activated carbon particles is filled in the above-described manner is formed in the inner wall formed in the lower part of the inner wall of the first septic tank 1. It is mounted on a support base 19 as a flange via a sealing member or packing 99. As a result, a space is defined between the lower end of the inner basket 90 and the bottom of the septic tank 1, and this space is defined by the pipe 3 having the pipe 132 and the on-off valve 39 interposed.
6 will be communicated. Also, the inner basket 9 located on the upper side
Numeral 0 is mounted via a seal member or packing (not shown) on a support base 191 which is an inner flange formed in the middle part of the inner wall of the first septic tank 1. A space is also defined between the upper end of the upper inner basket 90 and the top cover 18 of the septic tank 1, and this space communicates with the pipe 40 in which the on-off valve 41 is interposed. At the edge of the inner basket 90 on the upper end side, one or more pairs of catches 93 are formed, the tips of which are eyelets.
In other words, a pair of fishing gear 93 extends upward from two positions located on the same diameter of the edge of the inner basket 90 on the upper end side. When the inner basket 90 is disposed in the septic tank 1, the one or more pairs of fishing hoists 93 are pressed by stoppers 96 provided on the inner wall of the septic tank 1, and the inner basket 90 is supported by buoyancy. From 19, it does not rise. This is because the inner basket 90 is
When the liquid-tight engagement between the two is released, the sewage does not pass through the carrier 11 (that is, the sewage falls down the outer wall of the inner basket 90 along the axial direction), and the sewage flows directly to the 2 septic tank 101
This is so as not to flow into. The stopper 96 is hingedly connected to the inner wall of the septic tank 1 by a hinge (not shown). In the state shown in the figure, the stopper 96 is located substantially perpendicular to the inner wall of the septic tank 1. Is laid on the inner wall of the septic tank 1 so that the septic tank 1
It can be inserted and removed inside. Specifically, if the stopper 96 is laid on the inner wall of the septic tank 1 after the lid 18 is opened, the inner basket 90 can be inserted and removed by catching the fishing hoist with a crane or a winch. The cover 18 is provided with an air vent (not shown) for venting gas. The inner volume of the septic tank 1 is about 2 cubic meters, and therefore the volume of the inner basket 90 and thus the inner basket The amount of the carrier 11 accommodated in 90 is slightly smaller than this. In the space defined between the lower end of the inner basket 90 and the bottom of the septic tank 1, an air diffuser 97 having a large number of pores is provided. And this diffuser 97
Is a fan 9 located outside the first septic tank 1 via a pipe.
8, when the fan 98 is driven, air is emitted from the air diffuser 97 in the form of bubbles to activate the microorganisms carried on the carrier 11. The driving of the fan 98 may be performed at all times, or intermittently.
Alternatively, the detection may be automatically performed when the amount of oxygen detected using a sensor (not shown) decreases. Carrier 1 accommodated in second septic tank 101
11 is a state sandwiched between a pair of meshes 112,
It is loaded in the inner basket 190. Then, Uchigo 190
Is the same as the structure of the inner basket 90, but the carrier 111
Can move in the inner basket 190 together with the meshes 112. That is, as shown in FIG. 2, the carrier 111 is located below the inner basket 190 when there is no clogging or is equal to or less than a predetermined limit, but the oil component contained in the sewage is With the passage of time, the support 111 is clogged, a film is formed on the lower end surface of the support 111 by adhesion of contaminants, and if the sewage is prevented from passing through the support 111, a pressure loss occurs. That is, the carrier 11
The pressure on the downstream side of 1 becomes smaller than the pressure on the upstream side, and the carrier 111 and the pair of meshes 112 sandwiching the carrier 111 are integrally floated. The clogging of the carrier 111 and the floating of the carrier 111 and a pair of meshes 112 sandwiching the carrier 111 are related. On the upper side integral with the carrier 111, a marker 60 having an inverted T-shape when viewed from the side is integrally connected. That is, the marker 60 is formed of a substrate 62 that forms a disc when viewed in plan, and a shaft 64 that extends vertically from the substrate 62. The shaft 64 passes through the lid 110 of the second septic tank 101 and is exposed to the outside. Thus, a portion 66 of the outer surface portion of the shaft 64 is coated in the axial direction, and when the floating of the carrier 111 exceeds a predetermined value, the coated portion 66 of the shaft 64 is
It emerges outside the second septic tank 101.
The portion 66 to be coated may be a single-color coating, or may be painted in a plurality of colors to indicate the degree of clogging in the axial direction in a stepwise manner. The first septic tank 1, the oil storage tank 54 adjacent to the first septic tank 1, and the second septic tank 2 are arranged in a common container 100, and the oil / water separation tank 5 is mounted on the container 100. Is placed. And container 10
If the rope (not shown) that passes through the fishing hoist 102 (only two are shown) provided on the vehicle body above 0 is pulled up by a crane, the entire apparatus can be moved. Specifically, the device can be placed on a large truck and the installation location can be moved. At this time, the hose 30a is
Removed from A pair of carriers 11 in the first septic tank 1
The fixation of the microorganisms to the cells is performed as follows. First,
The lid 18 is opened and opened to the atmosphere, and the air introduced into the first septic tank 1 creates a comfortable environment for microbial growth. Next, a microorganism culture solution is introduced into the first septic tank 1, and the microorganism culture solution moves from the top to the bottom of the carriers 11 by gravity, and adheres to the carriers 11 in this process. The microorganism grows as a seed. The microorganism is prepared by liquid culture, and about 10 liters are charged. After the introduction of the microorganisms, a microorganism culture solution or other microorganism activator is introduced, and oxygen-containing air is introduced into the air diffuser 9.
By supplying the microorganisms from 7, an environment in which the microorganisms easily grow is formed inside the first septic tank 1, the growth of the microorganisms is activated, and a high decomposition ability can be provided.
The temperature in the first septic tank 1 is maintained at the activation temperature of the microorganisms as necessary. When the amount of microorganisms attached is small,
It is preferable to increase the input amount of the microorganism culture solution or leave it for a desired time to grow it. The fixation of microorganisms to the carrier 111 in the second septic tank 101 is also performed in the same manner as described above with the lid 110 opened. Hereinafter, the operation of the sewage purification apparatus will be described. When the pump 58 is driven, sewage in the ground passes through the hose 30a and the water pipe 30 and is introduced into the oil / water separation tank 5. While the pump 58 is operating,
In the oil-water separation tank 5, the water level of the sewage continues to rise. As a result, the oil and water floating on the surface of the sewage water are vertically separated due to the difference in specific gravity, and this oil is separated into the float funnel 5
1 and is discharged to an oil storage tank 54 via a hose 52 and an oil drain pipe 53. On the other hand, moisture is introduced into the upper part of the first septic tank 1 through the inflow pipe 32. still,
The groundwater pumped by the pump 58 is approximately 10 cubic meters per day. If the carrier 111 has no or negligible clogging (that is, if it is below a predetermined limit),
The oil component contained in the sewage, which is located on the lower side in the inner basket 190 but passes through the support 111 from below, causes the support 111 to clog with the passage of time and If a film is formed on the lower end surface of the base 111 by the attachment of contaminants and the passage of the sewage through the carrier 111 is inhibited, a pressure loss occurs. That is, the pressure on the downstream side of the carrier 111 becomes smaller than the pressure on the upstream side, and the carrier 111
And a pair of meshes 112 sandwiching the carrier 111,
Levitate integrally. When the floating amount of the carrier 111 exceeds a predetermined value, the coated portion 66 of the shaft 64
It emerges outside the second septic tank 101. Thus, the coated portion 66 of the shaft 64
However, as shown in FIG. 4, when it appears outside the second septic tank 101, the administrator can easily recognize such a state. FIG. 5 shows a modification of the present invention. The structure shown in FIG. 5 is a mode in which the second septic tank 101 is turned over, and the shaft 64 of the marker 60 extends in the horizontal direction from the second septic tank 101. The benefit of such a configuration is that the advantages of the present invention can be enjoyed even when the space above the second septic tank is small. The structure of the second septic tank 101 itself is basically the same as that shown in FIG. 2, but in FIG.
11 moves the marker according to the balance between the pressure loss due to gravity and the force, whereas in FIG.
12, a spring 140 is required, and the difference is that the marker 60 is displaced by the balance between pressure loss and force. In addition, a seal portion 150 for sealing dirty water between the lid 110 and the marker 60 is required. As is clear from the graph shown in FIG. 6, as the clogging of the carrier 111 progresses,
The pressure drop at 1 increases. As the pressure loss increases, the carrier 11
Although the pressure difference (differential pressure) between the inlet side and the outlet side of 1 increases,
This differential pressure acts from the inlet side to the outlet side of the carrier 111. Thus, the supporting body 111 is also provided with an urging force that opposes the differential pressure (in FIG. 2, the weight of the supporting body 111, FIG. 5).
In this case, the spring force of the spring 140 is acting, so that the carrier 111 moves when the pressure difference overcomes the biasing force that antagonizes. The carrier 111 floats or moves when the pressure loss enters the region indicated by the net in the graph. Although the embodiments of the present invention have been described above, the present invention is not intended to be limited to the above-described embodiments.
Any type of sewage purification device may be used as long as it is in accordance with the spirit of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram of a sewage purification apparatus to which the present invention is applied. FIG. 2 is a detailed sectional view of a main part of the present invention. FIG. 3 is a downward perspective view of an inner basket for accommodating activated carbon particles as a carrier. FIG. 4 is an operation explanatory view of a main part of the present invention. FIG. 5 is a detailed sectional view of a modified example of the present invention. FIG. 6 is a graph showing a relationship between clogging of a carrier and pressure loss in the carrier. [Description of Signs] 58 Pump (pumping pump) 60 Marker 66 Coated part 90 Inner basket 101 Septic tank (second septic tank) 111 Carrier

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Claims (1)

Claims: 1. A septic tank and a carrier accommodated in the septic tank and carrying microorganisms, wherein the wastewater passes through the carrier to purify the wastewater with the resolution of the microorganisms. The sewage purification apparatus according to claim 1, wherein the carrier is displaceable in the septic tank, and a marker extending outside the septic tank is provided so as to interlock with the displacement of the carrier. Purification device.