JP3618251B2 - Septic tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a septic tank composed of a septic tank main tank and a septic tank sub-tank, and more specifically, for example, a septic tank main equipped with a membrane separation tank equipped with a suction pump that sucks water to be treated and permeates the filtration membrane. the vessel is provided, about the septic tank that is the disinfecting chamber provided for disinfecting the water to be treated passes through the filtration membrane.
[0002]
[Prior art]
Conventionally, as the septic tank, the one consisting only of the septic tank main tank has been widely used. However, the septic tank is mainly used for the purpose of disinfecting and temporarily storing reusable treated water via the membrane separation tank. A two-tank separation type composed of a tank and a septic tank sub-tank has been proposed.
Such a septic tank is effectively used in the sense of separating clean water to be treated that contains almost no sludge from water to be treated containing a large amount of sludge components. In other words, by using a separate casing, it is possible to expect the effect that the water component to be treated inside can be stabilized and maintenance can be easily performed.
[0003]
[Problems to be solved by the invention]
However, the septic tank having such a configuration requires a connecting pipe that connects the two tanks, and the piping work tends to be troublesome. In addition, even if such construction work is performed, the relative position of the two tanks may change due to the loosening of the ground due to rain water, the movement of the ground due to ground subsidence, etc., resulting in trouble with the connection piping. There was a fear. Such a phenomenon is considered to be a phenomenon that tends to occur with respect to a small and lightweight septic tank sub-tank, and in particular, a stable arrangement of the septic tank sub-tank is desired.
[0004]
Therefore, in view of the above situation, an object of the present invention is to provide a septic tank that is easily arranged stably even if it is a two-tank separation type.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the characteristic configuration of the septic tank of the present invention is:
The septic tank is composed of a septic tank main tank and a septic tank sub tank, and is provided with a support portion for supporting the septic tank sub tank in a mounted state on the septic tank main tank.
Further, a pair of upper and lower divided members are provided, a flange portion is provided at each opening edge portion of the divided member, the flange portions are butted together and the divided members are joined together to form the septic tank main tank. The flange portion may be formed on the support portion.
Further, the septic tank sub-tank may be formed in an upwardly widening shape that opens larger toward the upper side, and the lower end may be formed so as to be placed on the flange part,
In a septic tank provided with a septic tank main tank provided with a membrane separation tank equipped with a suction pump for sucking water to be treated and permeating the filtration membrane, and provided with a disinfection tank for disinfecting the water to be treated that has passed through the filtration membrane ,
It is preferable that the disinfection tank is provided in a septic tank sub-tank separate from the septic tank main tank body.
In addition, the characteristic configuration of the septic tank installation method of the present invention is:
In the septic tank composed of at least two casings, the casings are laid and formed while forming a stable posture in the soil in cooperation with each other.
Moreover, it is preferable to comprise a septic tank from a septic tank main tank and a septic tank sub tank, and to embed both tanks integrally in the state which mounted the said septic tank sub tank in the said septic tank main tank.
[0006]
[Function and effect]
In the septic tank consisting of a septic tank main tank and a septic tank sub tank, if the support section for supporting the septic tank sub tank in a mounted state is provided in the septic tank main tank, the septic tank sub tank is placed in a more stable septic tank main tank. It can be handled in a supported state, can be stably embedded, and connection piping and the like can be ensured. At this time, the part having the main function of the septic tank (usually the largest) is referred to as the septic tank main tank, and all others are referred to as the septic tank auxiliary tank. Moreover, the number of septic tank subtanks does not ask | require. Moreover, when supporting the said septic tank auxiliary tank in the said septic tank main tank, it is preferable on handling that both are integrated by adhesion | attachment and fastening.
[0007]
Further, a pair of upper and lower divided members are provided, a flange portion is provided at each opening edge portion of the divided member, the flange portions are butted together and the divided members are joined together to form the septic tank main tank. If there is, the septic tank main tank is water-tightly joined at the flange part, and the flange part stabilizes the embedding posture of the main tank. Moreover, since this flange part is made to protrude outside a septic tank, if the said septic tank sub tank is engaged with the said flange part, it becomes possible to support the said septic tank sub tank stably. At this time, it is preferable that the septic tank sub-tank is formed in a shape along the outer surface shape of the septic tank main tank, and if this is done, an easy and reliable linkage structure between the two can be achieved. Can take.
[0008]
Further, if the septic tank sub-tank is formed in an upwardly widening shape that opens larger toward the upper side and the lower end portion is formed so as to be able to be placed on the flange portion, the septic tank sub-tank can be easily mounted on a narrow flange portion. It can be placed and can be structured to be surely supported by the septic tank main tank, and it is easy to secure a space where the work can be easily performed at the opening.
[0009]
In a septic tank provided with a septic tank main tank provided with a membrane separation tank equipped with a suction pump for sucking water to be treated and permeating the filtration membrane, and provided with a disinfection tank for disinfecting the water to be treated that has passed through the filtration membrane ,
By providing the sterilization tank in a septic tank sub-tank separate from the septic tank main tank body, it is easy to eliminate the possibility that the septic tank main tank and the water composition to be treated of the sub tank greatly differ from each other, For example, it is advantageous when the water to be treated in the disinfection tank is reused. In addition, since the disinfecting tank portion requiring particularly high maintenance is separated from the membrane separation tank portion, the space to be managed can be narrowed down, and the working efficiency of the maintenance worker can be improved.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
The septic tank 100 shown in FIG. 1 will be described. The septic tank main unit is configured such that the water to be treated moves from the upstream side to the contaminant removal tank N, the flow rate adjustment tank B1, the sedimentation sludge storage tank B2, and the membrane separation tank E in the order of description. It is comprised from the tank 101 and the septic tank subtank 102 which makes the disinfection tank Q and pump 9 arrangement | positioning space, and each tank is divided by the partition W.
In the septic tank main tank, the upper main body 101a and the lower main body 101b are abutted and joined by the flange portion 103 to form a water treatment space.
[0013]
The contaminant removal tank N receives the raw water flowing in from the inlet I as treated water and separates solid components such as scum generated on the liquid surface and solid matter precipitated from the treated water, An anaerobic bacterium for anaerobically decomposing water to be treated is cultivated inside the liquid component of the raw water so that it can be naturally transferred to the flow rate adjusting tank B.
In the figure, F is an advection pipe provided with an opening F1 at the center in the width direction of the contaminant removal tank N, and the water to be treated that has become above the reference water level of the contaminant removal tank N is filtered by the filter medium F2. And is configured to flow into the flow rate adjusting tank B from the opening F1. Further, the upper part of the advection pipe F is provided with first and second guide paths G1 and G2 for guiding the water to be treated that has reached a predetermined water level slightly above the reference water level to other than the flow rate adjusting tank B. .
[0014]
The flow rate adjustment tank B1 includes a measuring device 1a and a transfer air lift pump 1b, temporarily stores the liquid component of the water to be treated that has naturally transferred from the contaminant removal tank N, and the membrane separation tank E It is formed so that it can be transferred almost quantitatively through the transfer pipe 1c.
[0015]
The membrane separation tank E purifies the treated water by filtering it with a flat membrane M as a plurality of filtration membranes, and aerobic decomposes the organic components of the treated water in the membrane separation tank E. Bacteria are grown. Furthermore, with the flat membrane M attached in the tank, an air diffuser D is provided below the flat membrane M to supply bubbles and prevent sludge and the like from adhering to the surface of the flat membrane M. Therefore, by performing aeration operation from the aeration tube D, oxygen can be supplied to the aerobic bacteria, and the surface of the flat membrane can be washed, so that the membrane separation performance of the flat membrane M can be maintained high.
[0016]
The flat membrane M as a filtration membrane is formed by adhering and forming a polyethylene filtration membrane member on both surfaces of an ABS resin support plate having a treated water conducting portion on the inside, and communicating with the treated water conducting portion. When the suction operation is performed from the nozzle 4 in a state where the flat membrane M is immersed in the water to be treated, the water to be treated passes through the filtration membrane member, and the filtration membrane member Sludge and the like in the treated water are removed, and the treated water that has been highly purified can be taken out. Here, the filtration membrane member 6 is a limit filtration membrane having a pore diameter of 0.3 μm or less, and by selecting a membrane having such a pore diameter, contamination within the membrane can be prevented for a long period of use, and long-term Maintenance-free operation is possible.
[0017]
The nozzle 4 is connected in communication with a suction pump 9 provided in the disinfection tank Q of the septic tank sub tank 102, and water to be treated (membrane permeation) which has been subjected to membrane separation treatment by the flat membrane M by operating this suction pump 9 (Referred to as treated water) is sent to a disinfection tank Q as a disinfection mechanism provided outside the septic tank. Here, as shown in the drawing, the suction pump 9 is provided outside the septic tank side wall 104 to ensure ease of maintenance, and the suction pump 9 is disposed at a position lower than the lowest water level of the membrane separation tank E. Has been. Therefore, even when the suction pump 9 is stopped, the water to be treated remains in the suction pump 9 and serves as priming water at the time of restart.
The septic tank sub-tank 102 is formed with a wider opening toward the upper side, and its side wall has a shape that follows the septic tank main tank 101 and is bonded and integrated in a state of being placed on the flange portion 103 as a support part. The septic tank main tank 101 can be stably supported.
[0018]
The first guide path G1 provided in the upper part of the advection pipe F is connected to the sterilization tank Q, and allows the treated water to be supplied to the sterilization tank Q without passing through the membrane separation tank E. Constitutes the flow mechanism. When the water levels of the contaminant removal tank N and the flow rate adjustment tank B1 are high, the low-load treated water that has flowed in large quantities into the tank can be transferred to the disinfection tank Q as it is and used as reclaimed water. . Further, the second guide path G2 is connected to a temporary storage tank T provided separately from the septic tank main tank 101. Even in the same case as described above, a large amount of the low-load treated water flows in the daytime. Then, when there is a possibility of joining with the water supply from the water pipe, the first guide channel G1 is closed and the low-load treated water is stored in the temporary storage tank T. It is configured so that it can. The first and second guide paths G1 and G2 are switched by a timer-linked switching mechanism (not shown).
[0019]
By adopting the above configuration, the raw water flowing in from the inlet I is quantitatively transferred to the membrane separation tank E through the flow rate adjustment tank B while being separated into solid and liquid in the contaminant removal tank N, and membrane separation is performed. After being highly purified in the tank E, it is discharged quantitatively outside the septic tank via the disinfection tank Q. The treated water through the sterilization tank Q can be effectively reused.
[0020]
Such a septic tank is embedded while forming a stable posture in the soil by linking the casings with each other.
That is, the septic tank main tank 101 and the septic tank sub tank 102 are fixed in a state in which the septic tank sub tank 102 is placed on the flange portion 103 as a support part of the septic tank main tank 101, and both tanks are embedded integrally. As described above, the septic tank is composed of the septic tank main tank 101 and the septic tank sub tank 102, and the septic tank sub tank 102 is placed on the septic tank main tank 101 so that the load of the septic tank sub tank 102 is increased. The septic tank main tank 101 is used to prevent instability of the septic tank sub-tank 102, and the overall stabilization can be achieved.
[0021]
Further, as the support portion, in addition to using the flange portion 103, an engagement portion that engages with the septic tank main tank 101 and the septic tank sub tank 102 may be provided to form the support section.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a septic tank according to an embodiment of the present invention. FIG. 2 is a plan view of a septic tank according to an embodiment of the present invention.
100 Septic tank 101 Septic tank main tank 102 Septic tank sub tank 103 Support part

Claims (4)

A septic tank comprising a septic tank main tank and a septic tank sub tank, wherein the septic tank main tank is provided with a support portion for supporting the septic tank sub tank in a mounted state . A pair of upper and lower divided members are provided, flange portions are provided at the opening edge portions of the divided members, the flange portions are butted together and the divided members are joined together to form the septic tank main tank, The septic tank according to claim 1, wherein a flange portion is formed on the support portion. The septic tank according to claim 2, wherein the septic tank sub-tank is formed in an upwardly widening shape with a larger opening toward the upper side, and a lower end portion is formed so as to be placed on the flange portion. A septic tank is provided with a septic tank main tank equipped with a membrane separation tank equipped with a suction pump for sucking water to be treated and permeating the filtration membrane, and a sterilization tank for disinfecting the water to be treated that has passed through the filtration membrane. And
The septic tank according to any one of claims 1 to 3, wherein the sterilization tank is provided in a septic tank sub-tank separate from the septic tank main tank main body.

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