JPH08135002A - Separator of rubbish in sewage purifier - Google Patents

Abstract

PURPOSE: To prevent rubbish on screens and sand from entering in a sewage treatment unit made of a box culvert installed in a river bed or the like. CONSTITUTION: A box-form settling part 1 is formed to have a sewage-inflow opening 2 provided with a screen 11 laid on the upper face thereof and formed so as to be freely opened or closed by a flow rate control plate 9 and further, a sewage-outflow opening 3 at the upper part of the rear wall 1b. The settling box 1 is connected to the opening 7a at the front end of the box culvert 7 charged with sewage treating materials 6, installed on a river bed and the outflow opening 3 is opened toward the inside of box culvert 7. Rubbish in sewage is separated by the screen 11 and washed away and sand or grit settles down on the bottom of settling box 1. The sewage free from these materials is conducted in the box culvert 7 and purified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating contaminants in a sewage purification apparatus, and more particularly, to a purification apparatus comprising a box culvert loaded with a treatment material inside a riverbed. The present invention relates to an apparatus for separating contaminants in a sewage purification apparatus in which a separation apparatus for contaminants is connected to a front end of a purification apparatus so that impurities in sewage flowing into the purification apparatus can be separated. .

[0002]

2. Description of the Related Art Conventionally, a sand basin has been provided as a pretreatment device for flowing low-concentration sewage such as rivers into a purification device.
Dust is removed at the inflow gate portion while adjusting the amount of water at the inflow gate provided in the sand basin, and a sand removal device is provided as necessary.

[0003]

In the above-mentioned prior art, a sand basin is provided before the sewage flows into the purification device.
A removal device for sieving is provided at the introduction part of the sand basin, the sand is separated by the sand basin, and a sand removal device is connected if necessary.
It is a factor of high cost.

[0004] Therefore, there arises a technical problem to be solved in order to be able to efficiently separate contaminants and sand from the sewage on a simple scale, and the present invention solves the problem. The purpose is to do.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been proposed to achieve the above object, and is a box-shaped sediment box, on which a screen is stretched on the upper surface of the sediment box. The sewage inlet was opened, and the sewage outlet was opened on the rear wall of the sedimentation box. On the other hand, a concrete box-shaped culvert loaded with a purification material inside was installed on the riverbed, and the purification device was installed. The sewage formed and connected to the front of the culvert at the forefront part of the purification device, and the sewage established in the sediment box at the opening formed in front of the culvert at the forefront part. So that the sewage in the sedimentation box can be made to flow into the septic tank by facing the outlet of the sewage tank, and the amount of water capable of opening and closing the sewage inlet provided in the sedimentation box above the sedimentation box. Of contaminants in a sewage purification system equipped with a control opening and closing plate The separating device and the water amount control opening / closing plate are pivotally supported by a support shaft provided in a direction crossing the water flow above the sedimentation box, and extend upward from the vicinity of the pivot portion. And a valve section for opening and closing a wastewater inlet provided on the upper surface of the sedimentation box is provided on the opposite side of the weight section so as to collide with the front face of the weight section in a normal state of water flow. It is an object of the present invention to provide an apparatus for separating contaminants in a sewage purification apparatus which balances the weight portion and a water flow such that an inlet of the sewage is opened by a flowing water flow.

[0006]

The sewage of the river flows on the upper surface of the settling box, collides with the front surface of the weight portion of the water amount control opening / closing plate, and pivots the weight portion upward to infiltrate into the lower surface of the water amount control opening / closing valve.
At this time, the valve portion of the water amount control opening / closing plate opens the inflow port of the sewage provided in the settling box, and the sewage flows into the settling box from the inflow port.

[0007] Since the inflow port of the sewage is provided with a screen, impurities in the sewage flowing into the inflow port are removed by the screen, and the impurities are removed. Only the wastewater which has flowed into the box culvert is purified by the purifying material in the box culvert, and is returned to the river again. Also, the contaminants captured by the screen are swept away by the subsequent sewage stream to the upper surface of the downstream culvert. Thus,
Since the contaminants are not mixed in the wastewater flowing into the box culvert, the purification material loaded in the culvert is not clogged and clogged by the contaminants.

Furthermore, inside the settling box, the heavy sand in the wastewater is separated by sedimentation and separated from the wastewater together with the above-mentioned contaminants, and only the wastewater flows into the box culvert. While the sewage flows through the purification material installed in the box culvert, the sewage is purified by the microorganisms attached to the purification material. That is, since the contaminants and sand are not mixed in the sewage flowing into the box culvert, the purifying material does not block.
Therefore, simply installing the apparatus and the purification apparatus of the present invention on the riverbed enables efficient purification of river sewage. Further, the sand accumulated in the settling box can be arbitrarily taken out through a manhole provided on the upper surface of the settling box.

Further, the operation of the water quantity control opening / closing plate will be described in detail. When the river water is in a steady state, the flowing water of the river sneaks into the lower surface of the weight part of the water quantity control opening / closing plate, so that the valve portion is The wastewater is pushed upward to open the inflow port of the wastewater, and the wastewater flows into the box culvert through the settling box.

When the water level of the river increases, the upper part of the weight part of the water amount control opening / closing plate is pressed by the rise of the water level to rotate about the supporting shaft, and the valve part closes the inflow port of the dirty water. To do. At the same time, the weight portion becomes a weir crossing the water channel, and the river water overflows. Thus, when the river is flooded, the sewage is generally in a diluted state, so that the overflowing sewage has almost no pollution problem.

Further, since the apparatus according to the present invention is directly connected to the upstream of the purification apparatus provided in the riverbed, a sedimentation basin is provided separately from the conventional purification apparatus, and the sieve separation apparatus is provided therein. The configuration is extremely simple compared to what is provided,
There is no need for a place for installation, and the operation is performed by the flow of rivers, and maintenance is easy and easy.

[0012]

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a vertical sectional side view of a separation device according to the present invention. In the figure, reference numeral 1 is a sedimentation box buried in a river bed F. The sedimentation box 1 is made of concrete and is hollow.
A rectangular-shaped inflow port 2 for sewage is opened in the inclined section 1a formed on the upper stream downstream of the river, and an outflow port 3 for sewage is opened above the rear wall 1b of the sedimentation box 1. . Then, a funnel-shaped precipitation part 4 is formed at the bottom of the precipitation box 1, and a manhole 5 is further opened on the upper surface wall 1c above the precipitation part 4 to inspect the inside of the precipitation box 1 and deposits. It is possible to take it out.

Thus, the sediment box 1 is buried in the riverbed with the outlet 3 downstream of the river.
A plurality of box culverts 7 each having a purifying material 6 for sewage loaded therein are connected to the downstream side to form a purifying apparatus A. Thus, the sedimentation box 1 is connected so that the opening 7a on the front surface of the box culvert 7 at the front end of the purification device A and the wastewater outlet 3 provided in the sedimentation box 1 face each other. The box culvert 7 is an embodiment of a concrete box-shaped culvert, which has the openings 7a on the front and rear surfaces, respectively, and the number of the box culverts 7 is appropriately determined according to the amount of sewage. Be increased or decreased. The purifying material 6 loaded in the box culvert 7 is made of synthetic resin woven fabric, filament, or the like, and the microorganisms attached thereto are used for purification. Note that, in FIG.
Denotes a diffuser tube, and is used to activate the microorganism.

In the figure, reference numeral 9 denotes a water amount control opening / closing plate for controlling the amount of sewage flowing into the sedimentation box 1. The water amount control opening / closing plate 9 extends in a direction crossing the flow path as shown in FIG. It is swingably supported around the support shaft 10 provided.
Thus, the water amount control opening / closing plate 9 includes a weight portion 9a extending upward from the support shaft 10 and a valve portion 9b extending downward, and The weight portion 9a has a front surface forming a running water contact surface. Therefore,
When the flow rate of the wastewater is a steady flow rate as shown in FIG.
The flow rate of sewage and the buoyancy of the water volume control opening / closing plate 9
b is pushed up to open the sewage inlet 2.

When the flow rate of the sewage is abnormally increased, as shown in FIG. 3, the flowing force of the flowing water hitting the contact surface of the weight portion 9a causes the weight portion 9a to pivot upward and the valve portion 9b to move the sewage water. Is closed. The weight portion 9a rotated upward forms a weir, and the valve portion 9b is configured to be locked with the inflow port 2 closed. Further, in the figure, reference numeral 11 is a screen provided at the inflow port 2, and 12 is a guide plate for the water flow from the inflow port 2. The manhole 5 is closed during normal operation. In FIG. 2, a two-dot chain line indicates a guide weir.

One embodiment of the purifying apparatus according to the present invention is constructed as described above. Therefore, when the amount of sewage from a river is steady, as shown in FIG. Push up the valve 9b to open the sewage inflow port 2,
Sewage flows into the settling box 1. At this time, impurities mixed in the sewage are captured and separated by the screen 11.

In the sedimentation section 4 of the sedimentation box 1, sand and the like contained in the sewage separate and settle, and the supernatant sewage flows into the box culvert 7 from the outlet 3. The sewage is contacted with the purification material 6 loaded in the box culvert 7 so that organic contaminants and the like contained in the sewage are decomposed by microorganisms grown in the purification material 6 and purified. It will be done.

That is, since the sewage from which impurities such as sieving and fine sand are separated flows into the box culvert loaded with the purifying material 6, the purifying material 6 is not clogged by the contaminants. The purifying material 6 can continuously perform a purifying action. The number of box culverts 7 connected to the sedimentation box 1 is arbitrarily determined in consideration of the amount of wastewater and the processing capacity of the purifying material 6. In the illustrated example, the box culverts 7 are arranged in a single row. However, a plurality of box culverts 7 may be arranged in the width direction of the river.

The above description is for the case where the amount of sewage is steady. However, when the river water increases due to rainy weather or the like, the water flow cannot go under the lower surface of the water amount control opening / closing plate 9 and hits the contact surface of the weight portion 9a. Then, the weight portion 9a is rotated upward with the support shaft 10 as a rotation fulcrum, and the valve portion 9b closes the inflow port 2 of the waste water. Thus, the sewage collected on the front surface of the water amount control opening / closing plate 9 overflows the upper edge of the water amount control opening / closing plate 9 and flows downstream. Thus, when water is increased by rainwater or the like, impurities and soil contained in the turbid water are automatically prevented from flowing into the box culvert 7, and the purification that is loaded in the box culvert 7 is performed. The material 6 is configured so as not to be clogged.

When river water increases due to rainwater, etc.,
Since the sewage is diluted, even if it overflows and flows down the water volume control opening / closing plate 9, there is almost no hindrance to pollution. Thus, when the amount of flowing water is reduced, the flow force of the reduced flowing water is reduced, the weight portion 9a is turned forward by the weight of the weight portion 9a, and the flowing water infiltrates the lower surface of the valve portion 9b. Accordingly, the valve portion 9b pivots upward to open the inflow port 2, and the purifying action is restarted.

Further, since the apparatus according to the present invention is directly connected to the purification apparatus A constituted by using the box culvert 7 installed at the bottom of the river, the pretreatment of the sedimentation basin or the like is performed separately from the conventional purification apparatus. Compared with the case where the apparatus is provided, the planned design and the manufacture of each component are easier, and the installation work is extremely simple.

That is, the box culvert 7 loaded with the purification material 6 forming the purification device A can be mass-produced in a factory or the like, and in planning and designing, it is sufficient to calculate how many are used. Even if it is actually installed, strong foundation work is not required. Also, this box culvert 7
The sediment box 1 connected to the previous stage can be mass-produced similarly to the box culvert 7, and the sediment box 1 can be installed very simply by performing a simple foundation work. Therefore, when compared with the conventional settling basin provided near the river or on the riverbed, the device according to the present invention is installed at the bottom of the river, which has not been used conventionally, and therefore requires a special installation place. do not do.

The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention extends to such modifications.

[0024]

According to the present invention, as will be described in detail in the above-described embodiment, after the apparatus of the present invention is simply installed at the bottom of a river, sewage of the river is automatically purified, and The present invention has various advantages compared to the conventional separation device including a sedimentation basin, for example, because it is easy to design and manufacture, and it is not necessary to select a special installation place.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a vertical sectional side view of a precipitation box portion, which is a main part of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Precipitation box 2 Inlet 3 Outlet 6 Purifying material 7 Box culvert 7a Opening 9 Water volume control opening and closing plate 10 Support shaft 11 Screen A Purification device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location E02B 5/08 101 Z E03F 3/04 Z (72) Inventor Akihiko Fujimoto 5-Tajiri, Ichikawa, Chiba Prefecture 8-20 (72) Inventor Sojiro Tamura 3-6-1-547 Minamimizumoto, Katsushika-ku, Tokyo

Claims (2)

[Claims] 1. A sediment box formed in a box shape, wherein an inlet for sewage having a screen stretched thereon is opened on an upper surface of the sediment box, and an outlet for sewage is provided on a rear wall of the sediment box. On the other hand, a concrete box-shaped culvert inside which a purifying material is loaded is installed on the riverbed to form a purification device, and the sedimentation box is connected to the front of the culvert at the foremost end of the purification device. In addition, the sewage in the sedimentation box may be caused to flow into the septic tank by facing the outlet of the sewage established in the sedimentation box with the opening formed in front of the culvert at the forefront end. And an apparatus for separating contaminants in a sewage purification apparatus, further comprising a water amount control opening / closing plate capable of opening and closing an inflow port of sewage provided in the sedimentation box above the sedimentation box. 2. The water quantity control opening / closing plate is swingably supported by a support shaft that is installed above the settling box in a direction that crosses the water flow, and upward from the vicinity of the pivot support portion. A weight part formed by extension is provided, and further, a valve part for opening and closing the inflow port of sewage provided on the upper surface of the settling box is provided on the opposite side of the weight part. 2. The contaminant separation device in a wastewater purification device according to claim 1, wherein the weight portion and the water flow are balanced so that the wastewater inflow port is opened by the impinging water flow.