JP3183546B2 - Dispensing and measuring device for treated water - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a small-sized combined treatment septic tank for combining and treating human wastewater and household wastewater. The present invention relates to a device for distributing and measuring treated water.

[0002]

2. Description of the Related Art The present inventor has previously described Japanese Patent Application No. Hei 2-1831.
In the specification and drawings of No. 35, "a device for adjusting the discharge flow rate in a small-scale combined treatment septic tank useful for combining wastewater and household wastewater" is proposed. In FIG. An air lift pump device that pumps up the treated water is composed of a lift pipe descending to the pump tank and an air lift air supply pipe connected to the lift pipe, and the treated water pumped by the air lift pump device is distributed in a box shape. After being pumped to the weighing device, it is distributed and supplied to a predetermined processing step (of course, as shown in FIG. 4,
Instead of the air lift pump device, it can be pumped by a motor pump device).

[0003] The structure of this measuring device is such that a treatment water inflow chamber is provided in the center of a measurement box, outflow chambers are arranged on both sides thereof, and the outflow chamber and the inflow chamber are partitioned by a fixed gate. A lift gate is supported to the fixed gate so as to be able to move up and down freely, and a circulation return pipe is connected to one of the outflow chambers. It is returned to the first contaminant removal tank in the small-scale merger treatment septic tank, which is mixed with the merged wastewater and subjected to purification treatment to circulate so that finally denitrified treated water can be obtained. ing.

[0004] Further, an advection pipe to the next disinfecting tank is connected to the other outflow chamber, and a part of the treated water pumped to the measuring device is transferred to be supplied to the disinfecting treatment. Also,
A return pipe for returning the treated water once pumped to the measuring device to the pump tank is connected to the outflow chamber in the center, and depending on the pump capacity, the amount of outflow to the disinfection tank and the amount of circulation to the contaminant removal tank The surplus obtained by subtracting is returned to the pump tank again.

[0005] Therefore, in order to distribute and discharge the treated water pumped into the measuring device in three directions, the lift gate is raised to an appropriate height with respect to the fixed gate, and the triangular weir of the lift gate overflows. In addition, the function of adjusting the distribution of the outflow by the metering device is exerted.

However, in the case of the dispensing and measuring device disclosed in the above-mentioned prior art, in order to distribute the pumped treated water in three directions at an appropriate ratio, the elevation gate is appropriately raised and lowered to overflow the triangular weir. Since it is a distribution metering device having an overflow structure for adjusting a flow rate, it is difficult to adjust the flow rate.

In particular, small-sized combined treatment / purification tanks of various types with different processing capacities are manufactured depending on the number of persons to be treated. Accordingly, the flow rate to the disinfection tank in the next process and the foreign matter removal tank ( Alternatively, it is necessary to adjust the circulating return amount to the forefront part of the anaerobic filter tank or the first chamber of the anaerobic filter tank to an appropriate distribution ratio . Therefore, it is desirable that the dispensing and weighing device be capable of easily and appropriately variably adjusting the amount of outflow from the weighing device, even in the case of a small-sized combined treatment septic tank having various types of processing capacity.

In this regard, conventionally, Japanese Utility Model Application Laid-Open No. 53-56112
In the official gazette, the inside of the flow divider main body is flowed by a weir whose top edge is horizontal.
It is divided into an entrance room and an outflow room, and the outflow room is along a weir.
Divided into a plurality of branch rooms by a movable partition plate,
A liquid inlet is provided in the inflow chamber, and a liquid is provided in each branch chamber.
A shunt with a body outlet has been proposed,
A desired flow ratio can be obtained.

[0009]

The object of the invention is to be Solved However, Japanese Utility Model 53
In the case of the flow divider described in Japanese Patent No.
Is simply divided by inserting a movable partition plate
Therefore, the dividing position of the partition plate is fitted to one side of the branch chamber
The water pressure on one and the other
Due to fluctuations in load, the position of the section causes a position shift.
Rubbing or a situation in which the partition plate collapses easily occurs.

[0010] In addition, the distribution and measurement device of the small-sized combined septic tank is pumped.
The treated water that is pumped up depends on the current at the time of pumping.
In addition, the inflow chamber tends to vibrate greatly. That
Above, usually, air distribution pump device
Because the water is pumped into the inflow chamber,
Pumped up in water with a lot of air bubbles mixed in,
Occasionally, a foaming phenomenon occurs. When such a situation is assumed, the above-mentioned Japanese Utility Model Publication No.
In the flow divider described in Japanese Patent Application Laid-Open Publication No. H11-146, it is difficult to constantly maintain the overflow from the horizontal weir.

[0011]

Therefore SUMMARY OF THE INVENTION In the present invention, in order to solve the above problems, as described in claim 1
Then, the inside of the measuring box is filled with the overflow flat weir plate 8 and the inflow chamber X side and the distribution chamber.
A partition is formed on the Z side, and the overflow flat weir plate 8 is divided by the overflow width.
The combination is performed by flat weir partition plates 9a and 9b that partition the distribution chamber Z.
In the apparatus for distributing and measuring treated water variably adjusted,
An intermediate chamber Y is defined between the inflow chamber X and the distribution chamber Z.
A partition is formed between the inter-room Y and the inflow chamber X by the submerged weir plate 7.
Then, the intermediate chamber Y and the distribution chamber Z are partitioned by an overflow flat weir plate 8.
Inner wall on the back side of the overflow flat weir plate 8 forming the distribution chamber Z
Grooves 8a, 2a on the inner surface of the back plate 2 of the measuring box.
Are formed at regular intervals, and the bottom plate portion of the distribution chamber Z is formed.
5, the engaging groove 5a connecting the engaging grooves 8a and 2a
And the engagement grooves 8a, 2a, 5 at appropriate positions in the distribution chamber Z.
Thus, there is provided a device for distributing and measuring treated water in which the flat weir partition plates 9a and 9b are inserted into a.

[0012]

The distribution meter is operated by the air lift pump.
The treated water pumped into the inflow chamber X of the quantity device K
When the inflowing force is suppressed by entering the room X,
At the same time, while submerging the submerged weir plate 7 to reach the next intermediate chamber Y
In addition, air bubbles and foams contained in the pumped treated water
The foam component is stopped by the submerged weir plate 7 and then defoamed. this
The rectified and defoamed treated water in
The overflow flat weir plate 8 overflows and flows into the distribution chamber Z. Also,
Flat weir dividing plates 9a and 9b are inserted into the distribution chamber Z side,
Partitioned between the id divided chamber Z _1, Z ₃ and center dividing chamber Z ₂
The effective overflow width of the overflow flat weir plate 8
It flows into the distribution room Z side. Thereby, the individual divided chambers Z ₁ to
Results inflow into Z ₃ is adjusted allocation of individual divided chamber Z ₁
Proper outflow from to Z ₃ is secured.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a dispensing and weighing device K according to the present invention and a case where the dispensing and weighing device K is set above an air lift pump device P will be described.

(Distribution and Measuring Apparatus) In FIGS. 1 to 4, K denotes a measuring apparatus made of a synthetic resin, and includes front and rear plate portions 1 and 2, left and right side plate portions 3 and 4, and a bottom plate portion 5. Are formed integrally in a rectangular box-shaped bottomed structure, and the inside of the weighing box is divided and arranged in parallel into an inflow chamber X on the front plate part 1 side, a distribution chamber Z on the back plate part 2 side, and an intermediate chamber Y therebetween. are doing.

Reference numeral 6 denotes a pipe joint for an inflow pipe which is fitted and fixed at a position above the center of the front plate portion 1 and supplies treated water pumped up from a pump tank F to an inflow chamber X. 7 is the inflow chamber X
Submerged weir plate forming a partition between the inflow chamber and the intermediate chamber Y, the left and right ends of which are fixed to the upper halves of the inner walls of the side plates 3 and 4 and the lower side thereof is formed so as to be freely communicable. The treated water flowing into X is made to flow underground and transferred to the intermediate chamber Y.

Reference numeral 8 denotes an overflow weir plate (hereinafter, referred to as an overflow flat weir plate) having a flat upper surface which forms a partition between the intermediate chamber Y and the distribution chamber Z. Both ends are fixed to the lower half, the lower end is fixed to the bottom plate 5 and the upper side is open. Reference numerals 8a, 2a and 5a denote engagement grooves formed on the inner surface of the distribution chamber Z at substantially equal intervals so that the engagement grooves 8a are continuously provided on the rear surface of the overflow flat weir plate 8. the engagement groove 2a of the inner wall surface provided continuously, the engagement groove 8a of these things, with 2a to the front and rear symmetrical manner roughening, continuously provided the engagement groove 5a were also uneven therebetween of the bottom plate 5 ing.

Reference numerals 9a and 9b denote flat weir partitioning plates for dividing the overflow flat weir plate 8 on the distribution chamber Z side. The flat weir partitioning plates 9a and 9b are located at appropriate positions of the engaging grooves 8a, 2a and 5a formed in the distribution chamber Z. By inserting from above, the inside of the distribution chamber Z is partitioned into about three chambers in the left-right width direction. That is, the distribution chamber Z is formed by the two flat weir dividing plates 9a and 9b inserted into the left and right at an interval.
Is divided into a center divided chamber Z ₂ at a central position and side divided chambers Z ₁ and Z ₂ at both left and right positions, whereby the side divided chamber Z of treated water overflowing the overflow flat weir plate 8. _1, the inflow into Z _3, results allocations of inflow into the center dividing chamber Z ₂ is adjusted, the outflow from the side split chamber Z _1, Z _3, the outflow from the center dividing chamber Z ₂ The amount will be adjusted appropriately.

Reference numerals 10a to 10c denote pipe joints for outflow pipes having substantially the same diameter, and the side plate portions 3, ₃ of the side divided chambers Z ₁ and Z 3.
4. Pipe joints 10a and 10c are fitted and fixed to the lower part of
Further, pipe joint 10b is fitted and fixed to the bottom plate 5 of the center dividing chamber Z _2. Reference numeral 8b denotes a rising portion which is inclined obliquely upward at both left and right ends of the overflow flat weir plate 8, and corresponds to the length of the pipe joints 10a and 10c slightly protruding inside the side plate portions 3 and 4. Although the overflow width is narrowed, when the pipe joints 10a and 10c are directly flush with the side plates 3 and 4 or directly on the outer side thereof, the rising portion 8b becomes unnecessary. .

(Regarding the Air Lift Pump Device) The distribution and metering device K is disposed at an appropriate position above the tanks of the small-sized combined treatment / purification tanks S ₁ and S ₂ of the anaerobic filter bed contact aeration type shown in FIGS. A pump tank F into which the treated water subjected to the precipitation treatment in the sedimentation tank D flows, a next disinfecting tank E, and a foremost part of the impurity removing tank A or the anaerobic filter bed tank B at the foremost position or an anaerobic filter bed tank. first chamber although being piping configured for B _1, of which, a pump tank F for dispensing metering device K of the present invention is incorporated, the configuration of the air lift pump device P 4 of
It will be described based on.

Numeral 11 denotes a lift pipe for treated water which is set down inside the pump tank F. The base end of the lift pipe is connected to the inlet pipe joint 6 of the distributing / metering device K, and the lower end thereof is connected to the pump tank. An opening is formed at the bottom of the tank of F. Reference numeral 12 denotes an air-lifting air supply pipe which is lowered inside the pump tank F, and has a lower end fitted to a position near the lower end of the lift pipe 11 having a different diameter.
The pipe is connected to the mold pipe joint 11a, and the treated water in the pump tank F is pumped up by an air lift action.

Reference numeral 13 denotes an advection pipe to the disinfection tank E in the small-sized combined treatment / purification tanks S ₁ and S ₂ , the base end of which is connected to the pipe joint 10 c of the one side divided chamber Z ₃ . 14
A circulation return pipe of treated water is pumped, the pipe fittings 10a and the base end portion of the other side divided chamber Z ₁
Linked to its tip portion to below the application example 1 of a small combined treatment of the earliest in the septic tank S ₁ contaminant removing tank A, or earliest parts of the anaerobic filter bed chamber B, or, in Application Example 2 Small and to face the first chamber B ₁ of anaerobic filter bed chamber in combined treatment septic tank S _2.

[0022] 15 is a return pipe of the treated water pumped up once the dispensing metering device K, connecting the proximal end to the pipe joint 10b of the center dividing chamber Z _2, above the pump tank F and the other end Connected to the department. Reference numeral 16 denotes a water collecting pipe provided in the upper part of the settling tank D in the treated water. The collecting pipe 16 is connected to the front and rear collecting pipes 16 connected by a T-type pipe joint 16a so as to be able to communicate with each other. The water collecting pipe 16 is closed horizontally by plug joints 16b while being horizontally submerged in the treated water below the water level line L.
Reference numeral 17 denotes a water passage hole for the water collecting pipe 16, which is formed at an upper and lower position of the water collecting pipe 16 (or at both left and right positions and a lower position) at intervals in the width direction.

Numeral 18 denotes a T-shaped pipe joint connected to the upper side of the pipe joint 16a of the water collecting pipe 16, and its laterally projecting portion is positioned at a low level water level line L in the settling tank D, It is connected and fixed to the outer surface of the upper part of the pump tank F. 1
9 is an inspection cylinder connected to the upper side of the pipe joint 18,
By removing the plug 20 screwed to the upper end, the inflow of the treated water from the water collecting pipe 16 to the pump tank F can be observed. 11b is the lift pipe 11
Is a T-shaped pipe joint that is connected to the upper end portion of the lift pipe 11, and a plug 20a is screwed into the T-shaped pipe joint so that the inside of the lift pipe 11 can be inspected.

(Regarding the Process of Distributing and Measuring Treated Water) When the air supplied from the blower (not shown) outside the tank is supplied to the air lift supply pipe 12, the treated water in the pump tank F is discharged from the lift pipe 11. It is drawn in from the lower end opening, rises in the pipe by its air lift action, and is pumped into the inflow chamber X of the distribution and metering device K. The treated water that has flowed into the inflow chamber X flows through the submerged weir plate 7 and flows into the intermediate chamber Y, and further overflows the overflow flat weir plate 8 and flows into the distribution chamber Z.

The flat weir dividing plates 9a and 9b are inserted into the distribution chamber Z side, and are partitioned into the side divided chambers Z ₁ and Z ₃ and the center divided chamber Z _2. The treated water flowing into the divided chamber Z after overflowing the flow width uniformly flows into the individual divided chambers Z depending on the insertion positions of the flat weir partition plates 9a and 9b.
Results inflow into ₁ to Z ₃ is adjusted allocation, so that a proper outflow of individual divided chamber Z ₁ to Z ₃ is secured.

Specifically, when the effective overflow width of the overflow flat weir plate 8 excluding the rising portion 8b is 30 cm and the pumping capacity of the air lift pump device P is 30 liters per minute,
Treated water of 30 liters per minute overflows the overflow flat weir plate 8 and flows into the distribution chamber Z side. At this time, the engagement grooves 8a, 2a, and 2b into which the flat weir partition plates 9a, 9b are inserted. 5a,
If the unevenness is formed at a pitch of 1 cm along the overflow flat weir plate 8 and the back plate part 2, the effective overflow width is 1 cm / min.
One liter of the treated water flows into the distribution chamber Z.

Then, 1 liter per minute to the next disinfecting tank E,
In order to secure a flow rate of 4 liters per minute to the impurity removing tank A, the insertion position of one of the flat weir partition plates 9b is separated from the side plate 4 of the measuring box by 1 cm (actually, the rising portion 8b And the insertion position of the other flat weir dividing plate 9a is separated by 4 cm from the side plate portion 3 (similarly, the width of the rising portion 8b needs to be added). engaging groove 8a in, 2a, by fitting the support to 5a, inflow into side divided chamber Z _1, Z ₃ is properly distributed. As a result, from the overflow width of 25 cm between the flat weir partition plates 9a and 9b, 25 liters per minute overflows into the center divided chamber Z2.

The collecting pipe 16 and the pump tank F are connected to a settling tank D.
The low-level water level line L communicates with the low-level water level line L and the high-level water level line H. The treated water outside the tank is naturally pumped by the treated water in the pump tank F. As the water flows into the pipe from the water hole 17 of the water collecting pipe 16 as it is drained, it is pumped up to the distribution metering device K,
Adjustment of the discharge flow rate in the small-sized combined treatment septic tanks S ₁ and S ₂ is efficiently performed throughout the day.

When the treated water flowing into the pump tank F is pumped up by the air lift pump device P, if the amount of air supplied to the lift pipe 11 is substantially constant, the pumping capacity is
Due to the effect of fluctuations in the treated water level, the pumping capacity increases when the water level rises, and the pumping capacity tends to decrease when the water level decreases. It is very convenient because it can be done.

[0030]

Next, an application example in which the dispensing and weighing device K of the present invention and the air lift pump device P thereof are incorporated in small-sized combined treatment / purification tanks S ₁ and S ₂ will be described with reference to FIGS.

(First Example of Small Merged Septic Tank) First, the overall structure of the _first small merged septic tank S ₁ of the first example belonging to the category of the anaerobic filter bed contact aeration type shown in FIGS. 5 to 7 will be described. Inside the septic tank S _1, from one inlet pipe 21 side of the merger wastewater consisting life gray water and human waste effluent flows, over the discharge tube 22 of the other of the treated water, a plurality of processes in accordance with the order of steps of the purification process The tanks A to F have a partitioned tank structure. Among them, A is a contaminant removal tank partitioned and formed at the forefront on the inflow pipe 21 side of the combined wastewater,
Impurities that cannot be purified by being mixed into human wastewater or household wastewater are removed by sedimentation.

Reference numeral B denotes a next anaerobic filter bed tank formed adjacent to the impurity removing tank A. The anaerobic filter bed 23 (hereinafter referred to as anaerobic filter bed) provided in the anaerobic filter tank B is provided. That)
In addition, anaerobic microorganisms inhabit and are subjected to anaerobic treatment. C is the next contact aeration tank partitioned and formed adjacent to the anaerobic filter tank B, and is provided on a filter bed 24 (hereinafter simply referred to as an aerobic filter bed) of a contact filter medium provided in the contact aeration tank C. It is subjected to aerobic treatment by inhabiting aerobic microorganisms.

Reference numeral D denotes a next sedimentation tank formed adjacently to the contact aeration tank C, in which the treated water subjected to the contact aeration treatment in the contact aeration tank C and buried is allowed to stand still. E denotes a disinfecting tank formed at a position above the rear part of the sedimentation tank D. Usually, the supernatant of the treated water in the sedimentation tank D is disinfected and discharged from the discharge pipe 22 to the outside.

An inflow guide 25 is formed on the inflow pipe 21 side of the contaminant removal tank A. Between the inflow guide 25 and the inflow pipe 21 side, inflow water flows below the contaminant removal tank A. A downward flow passage 26 in the form of a square tube is provided to guide the flow toward the downstream side. Reference numeral 27 denotes a front partition (hereinafter, also referred to as a front partition) partitioning the impurity removing tank A and the anaerobic filter bed tank B,
In the upper part thereof, an advection port 28 from the contaminant removal tank A is formed at intervals in the left-right width direction.
An advection guide 29 formed at an interval in the left-right width direction is provided on the front side of the front partition wall 27 including the partition wall 8, and a rectangular tube serving as a cleaning port is provided between the advection guide 29 and the front partition wall 27. The advection passage 30 is formed. Therefore, the impurities including the sludge deposited on the bottom of the impurity removal tank A are usually pumped out by the vacuum car at a rate of about once a year using the advection passage 30. .

Reference numeral 31 denotes an intermediate partition wall (hereinafter referred to as an intermediate partition wall) for partitioning the anaerobic filter tank B from the next contact aeration tank C. An advection port 32 from the anaerobic filter bed B is formed at approximately the same height as the opening, an advection guide 33 is provided in front of the intermediate partition 31 including the advection port 32, and the advection guide 33 and the intermediate partition 31 are provided. A rectangular tubular advection passage 34 also serving as a cleaning port is formed between the two. Numeral 35 denotes an air diffuser arranged in a horizontal state at a lower end position on the front side of the contact aeration tank C, and inhabits the aerobic filter bed 24 by forming a circulation flow in the contact aeration tank C. It promotes the oxygen supply function for aerobic microorganisms and the circulation of the tank flow.

Reference numeral 36 denotes an upflow passage of the contact aeration tank C,
Immediately above the air diffuser 35, the front side of the aerobic filter bed 24 and the intermediate partition wall 31 are formed so as to be freely openable and communicable with each other. are doing. Reference numeral 38 denotes a rear partition wall (hereinafter, referred to as a rear partition wall) for partitioning the contact aeration tank C and the next settling tank D, and the treated water subjected to the contact aeration treatment is provided at its lower end with the next settling tank D side. An opening is formed in the latent flow port 39 for advancing toward the bottom.

Reference numeral 40 denotes a baffle plate which functions assuming an emergency evacuation when the treated water in the settling tank D overflows.
A scum formed in the upper part on the front side of the disinfecting tank E at right angles to the high-level water level line H and floating on the surface of the sedimentation tank D flows out of the aft port 41 on the rear side of the baffle plate 40. I try not to. Accordingly, the combined wastewater and the treated water flowing in a relatively short time are within the height range of the high level water level line H in the settling tank D assuming the above-mentioned overflow. From the removal tank A to the anaerobic filter bed tank B, the aerobic filter bed tank C, and the sedimentation tank D, the maximum amount is stored in the upper layer side.

Reference numeral 42 denotes a receiving trough for disinfecting treated water provided at the upper end of the front wall of the disinfecting tank E. In the receiving trough 42, a disinfecting cylinder 43 is set up. Reference numeral 44 denotes a partition for partitioning the disinfecting tank E, and a lower end thereof is formed with a latent flow opening 45 through which the disinfected wastewater flows. Numeral 46 denotes a backwashing device which is arranged in a horizontal state at the bottom of the contact aeration tank C. The backwashing device 46 stops supplying air to the diffuser 35 and then contacts the backwashing device 46 by supplying air to the backwashing device 46. The sludge adhering to the contact filter medium 24 is backwashed and washed by periodically applying an upward flow for raising the inside of the filter medium 24.

Reference numeral 47 denotes a stripping pipe for separating sludge which is erected and supported at the center of the rear part of the contact aeration tank C. The lower end of the pipe is formed at the front side of the submerged outlet 39 and is located near the lower end of the drawing pipe 47. Pipe joint 47A of different diameter fitted and supported at the position
In addition, a supply pipe 48 for air lift of the separated sludge is provided. Reference numeral 49 denotes a transfer pipe for the exfoliated sludge, the base end of which is connected to the upper end of the drawing pipe 47, and the front end of which faces the impurity removing tank A.

In the small-sized combined treatment septic tank S ₁ ,
The pump tank F in which the dispensing and weighing device K of the present invention is incorporated,
It is erected and fixed at the front center of the boundary between the contact aeration tank C and the settling tank D at the rear partition 38. The lift pipe 11
The air-lift air supply pipe 12 is constituted by a pipe connected to an air supply main pipe 50 from a flow rate adjustment blower (not shown) set outside the tank, and other air supply pipes 37 for diffusion and a pipe for pulling out separated sludge. 47, an air lift air supply pipe 48 and a backwashing device 46;
The backwash air supply pipe 51 is also branched from an air supply main pipe 52 from an aeration blower (not shown) set outside the tank.

(Regarding the Purification Process) Next, a description will be given of the purification process in the above-mentioned small-scale combined treatment septic tank S _1. First, the water level line in the septic tank S ₁ is changed to a low level water level as shown in FIG. The case where it is assumed to be on the line L, that is, not the case where a large amount of merged wastewater flows in a relatively short time, but the case where human wastewater or a relatively small amount of household wastewater flows in about the normal inflow amount will be described. I do.

(Contaminant Removal Step) When human wastewater having a flow rate of about the normal amount or a relatively small amount of household wastewater is drained, first, the wastewater is guided from the inflow pipe 21 to the inflow guide 25 of the contaminant removal tank A. Then, it flows into the impurity removal tank A, mixes into the household wastewater, precipitates unprocessable impurities, and is separated and removed over a relatively long period of time.

(Anaerobic treatment step) The treated water previously stored in the advection passage 30 due to the inflow of the human wastewater or household wastewater is removed from the front partition wall 27.
In the process of being sent out and flowing into the next anaerobic filter bed B after passing through the advection port 28 of the anaerobic filter bed and passing through the anaerobic filter bed 23 while settling, the anaerobic treatment by the anaerobic microorganisms is performed, It enters the advection passage 34 on the rear side of the floor tank B.

(Aerobic treatment step) When the wastewater from which impurities have been removed flows into the anaerobic filter bed tank B, the treated water previously stored in the advection passage 34 passes through the advection port 32 of the intermediate partition 31. Then, it flows into the contact aeration tank C for performing aerobic treatment by aerobic microorganisms. In the contact aeration tank C, a circulation flow in the tank is formed by the diffuser 35, and the aerobic filter bed 24 is repeatedly circulated to perform the aerobic treatment by the aerobic microorganisms.

(Precipitation Treatment Step) The treated water that has been subjected to the aerobic treatment gradually flows into the precipitation tank D from the submerged outlet 39 at the lower end of the rear partition 38 and is subjected to the precipitation treatment.

(Pumping Step) Of the treated water flowing into the sedimentation tank D, the low level water level line L
The supernatant liquid staying in the upper layer portion of the water collection pipe 16 is
7 flows into the pump tank F. The treated water that has flowed into the pump tank F flows from the lower end opening of the lift pipe 11 and rises in the lift pipe 11 due to a large amount of air bubbles generated by the air supply operation from the air lift air supply pipe 12 to the lift pipe 11. By moving, it is pumped up to the distribution and metering device K.

(Diversion step) The treated water pumped into the distribution and metering device K determines the overflow width of the overflow flat weir plate 8 of the measuring box and the insertion position of the flat weir partition plates 9a and 9b that partition the distribution chamber Z. Then, the flow rate to the next disinfecting tank E, the amount of circulating return to the first impurity removing tank A, and the amount of return to the pump tank F are appropriately adjusted and divided. Specifically, when the size of the small-sized combined treatment septic tank S1 is five tanks for processing and the pumping capacity of the air lift pump device P is about 30 liters per minute, Approximately 1 liter per minute, amount returned to impurity removal tank A is approximately 4 liters per minute, and the rest is 2 liters per minute.
About 5 is returned to the pump tank F again.

(Disinfection Step) The treated water flowing out of the advection pipe 13 of the distribution and metering device K to the receiving gutter 42 is subjected to a disinfection treatment by a disinfection cylinder 43.
The water is discharged from the discharge pipe 22 to the outside of the tank.

(Circulation Step) When a part of the treated water pumped to the distribution and metering device K is returned to the first foreign matter removal tank A, the treated water once treated is converted into an anaerobic microorganism. In the process of the anaerobic treatment by the moderately mixed, after being subjected to the anaerobic treatment again, and subjected to the aerobic treatment, finally, the denitrified treated water is obtained Become.

(Step of Adjusting Discharge Flow Rate) Next, in the small-sized combined treatment septic tank S ₁ in which the purification treatment is performed in the order of the above-described steps, the waste water mainly including washing wastewater and kitchen wastewater at the 7 o'clock in the morning is included. It is assumed that a pattern occurs in which the combined drainage and the combined drainage including household wastewater such as bath drainage and kitchen drainage at 6 o'clock in the evening flow in large quantities at a peak ratio of about six times the average daily inflow sewage amount.

In this case, first, it is kept in the range of the high level water level H of the plurality of processing tanks A to D excluding the disinfecting tank E to perform the purification treatment, while the sedimentation treatment is performed to make the low level water level line H. The treated water staying in the upper part of L is flowed into the pump tank F from the water hole 17 of the water collecting pipe 16 and the inflow water is constantly pumped up by the air lift pump device P throughout the day. By diverting the water, it constantly handles the discharge outside the tank throughout the day.

Thus, the influence of the merged wastewater flowing in a relatively short time is received within the range of the low-level water level line L and the high-level water level line H of the plurality of treatment tanks A to D, and the low-level water level line is obtained. The treated water remaining in the upper layer of L is pumped through the air by the air lift pump device P throughout the day or relatively constantly over a relatively long period of time, so that the treated water is as quantitatively as possible. Then, the transfer to the next disinfection process and the like and the discharge to the outside of the tank are performed.

Therefore, with respect to the combined wastewater discharged in a large amount in a relatively short time, there is no possibility of causing unevenness in treatment due to the length of the residence time unlike the conventional apparatus, and the treatment performance for the discharged wastewater is constantly maintained. it can, bring a breakthrough various effects to the purification process of the merger waste water containing life gray water due to the small size merger processing septic tank S1 of此種.

Specifically, the maximum inflow adjustment capacity V that can be stored between the high-level water level line H and the low-level water level line L in the small-scale combined treatment / purification tank S ₁ of about five tanks.
= 500 liters, the flow control height thereof, that is, the high level difference between the high level water level line H and the low level water level line L is about 20 cm, and the set discharge flow rate is about 0.5 to 1 liter per minute. Within this range, a good flow rate adjusting function for the combined drainage that flows in a large amount in a relatively short time is exhibited. In the above-mentioned case, the tip of the circulation return pipe 14 is provided at the impurity removing tank A, but it may be provided at a position near the foremost part of the anaerobic filter bed tank B.

Next, in the case of the small-sized combined treatment / purification tank S ₂ shown in FIGS. 8 to 10, in the case of the small-sized combined treatment / purification tank S ₁ of the first example, the contaminant removal tank is used. Instead of A, the anaerobic filter bed tank B is divided into two front and rear chambers, the front side of which is partitioned into a first anaerobic filter tank chamber B ₁ and the rear side thereof is partitioned into a _second anaerobic filter tank chamber B _2. ing. Another difference is that unlike the case of the first example, a stripping pipe 47 for separating sludge is provided vertically at the front side of the contact aeration tank C. Further, after the pump tank F and the water collecting pipe 16 outside the tank are communicatively connected to each other, the inflow pipe 53 in the pump tank F is set up to the same level as the low-level water level line L. . The other configuration is substantially the same as that of the first example, and the description thereof is omitted.

(Others) In the case of a small-sized combined treatment / purification tank (not shown) of the sedimentation / separation / contact aeration type, it is different from the small-sized combined treatment / purification tanks S ₁ and S ₂ of the first and second examples. , and instead the second chamber B ₂ is not first chamber B ₁ of anaerobic filter bed chamber B or anaerobic filter bed chamber, the foremost portion corresponding to contaminant removal tank a in the first application example, i.e., the raw sewage wastewater life is defined and formed in the inflow pipe 21 side and the precipitate separation tank a ₁ of wastewater, partition the next intermediate portion to the contact aeration tank C, also divided into precipitation tank D on the rear side of the discharge tube 22 side of the treated water After the formation, a pump tank F is disposed at the boundary between the contact aeration tank C and the precipitation tank D, and a disinfection tank E is formed at a position above the rear part of the precipitation tank D, more specifically, a tank structure. The configuration is as shown in the specification of Japanese Patent Application No. 2-183135 and FIG. 6 of the accompanying drawings.

In this case, since there is no anaerobic treatment step in the purification treatment step and no denitrification treatment is performed,
The distribution chamber Z in the distribution metering device H of the present invention is partitioned into two chambers by one flat weir partition plate 9, and the advection pipe 13 to the next settling tank E is piped to the pipe joint 10c. While the return pipe 15 to the tank F is piped to the pipe joint 10b, the pipe joint 10a is closed with a plug joint (not shown), or the distribution metering device K without the pipe joint 10a is previously provided.
It will be addressed by the use of.

[0058]

According to the present invention, there is provided the present invention as set forth in claim 1.
As described above, the inside of the measuring box is distributed to the inflow chamber X side by the overflow flat weir plate 8.
A partition is formed on the chamber Z side, and the overflow width of the overflow flat weir plate 8 is
The ratio is determined by the flat weir partition plates 9a and 9b that partition the distribution chamber Z.
Of the treated water distribution and metering device
The intermediate chamber Y is partitioned between the inflow chamber X and the distribution chamber Z.
A partition is formed between the intermediate chamber Y and the inflow chamber X by a submerged weir plate 7.
Then, the intermediate chamber Y and the distribution chamber Z are partitioned by an overflow flat weir plate 8.
Inner wall on the back side of the overflow flat weir plate 8 forming the distribution chamber Z
Grooves 8a, 2a on the inner surface of the back plate 2 of the measuring box.
Are formed at regular intervals, and the bottom plate portion of the distribution chamber Z is formed.
5, the engaging groove 5a connecting the engaging grooves 8a and 2a
And the engagement grooves 8a, 2a, 5 at appropriate positions in the distribution chamber Z.
a is provided with a treatment water distribution and metering device in which the flat weir dividing plates 9a and 9b are inserted into the distribution damper a. A flat weir dividing plate 9 into which the overflow width of the flowing weir plate 8 is inserted into the distribution chamber Z side
By changing the insertion positions of the a and 9b, the inflow rate into each of the divided chambers Z _{1 to} Z ₃ is appropriately distributed and adjusted, so that the outflow from each of the divided chambers Z _{1 to} Z ₃ can be easily and quickly performed. If it can be variably adjusted and incorporated into a small-sized combined treatment septic tank that combines and treats human wastewater and household wastewater, it is possible to cope with effective flow rate adjustment of the pumped treated water .

At this time, the dispensing and weighing device of the present invention
The inner wall surface of the back surface of the overflow flat weir plate 8 constituting the chamber Z and the measuring box
Engagement grooves 8a, 2a are formed at regular intervals on the inner wall surface of back plate 2.
And also engages with the bottom plate 5 of the distribution chamber Z.
The engaging groove 5a connecting the grooves 8a and 2a is formed with irregularities, and
A flat weir dividing plate is provided in the engagement grooves 8a, 2a, 5a at appropriate positions in the chamber Z.
9a, 9b, the flat weir partition plates 9a, 9
b is securely held at a predetermined position. Therefore, the flat weir divider
Due to the fluctuation of the hydraulic load applied to 9a and 9b,
It doesn't wake or collapse.

Further , an intermediate chamber is provided between the inflow chamber X and the distribution chamber Z.
Y, and the intermediate chamber Y and the inflow chamber X are submerged weir plates.
7, the partition is formed, so the air lift pump works
Is pumped into the inflow chamber X of the dispensing and weighing device K by the
The water is regulated by reducing the inflow force in the inflow chamber X.
While flowing through the submerged weir plate 7 to the next intermediate chamber Y.
Air bubbles in the treated water pumped during advection
And the foamed foam component is stopped by the submerged weir plate 7 and defoamed.
Become The rectified and defoamed treated water is
When the overflow flat weir plate 8 overflows from the intermediate chamber Y and flows into the distribution chamber Z, the effective overflow width of the overflow flat weir plate 8 uniformly overflows and flows into the distribution chamber Z side. Therefore, each divided room Z ₁
It is possible to secure a predetermined outflow from to Z _3, leading to various effects such as to exert utility as high partition metering device with its accuracy.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a dispensing and weighing device of the present invention as viewed from the rear side.

FIG. 2 is a plan view of the dispensing and weighing device.

FIG. 3 is a vertical sectional side view of the dispensing and weighing device.

FIG. 4 is a partially cutaway perspective view showing a state where the dispensing and measuring device of the present invention and an air lift pump tank are combined.

FIG. 5 is a vertical sectional front view showing a state in which the dispensing and measuring device of the present invention and its air lift pump tank are incorporated in a first application example of a small-sized combined treatment / purification tank of an anaerobic filter bed contact aeration type.

FIG. 6 is a plan view of a first application example.

FIG. 7 is a vertical sectional side view of the first application example.

FIG. 8 is a vertical sectional front view showing a state in which the small-sized combined treatment / purification tank of the anaerobic filter bed contact aeration type is incorporated in a second application example.

FIG. 9 is a plan view of a second application example.

FIG. 10 is a vertical side view of a second application example.

[Explanation of symbols]

K Distribution metering device X Inflow chamber Y Intermediate chamber Z Distribution chamber Z _{1 to} Z ₃ divided chamber F Pump tank P Air lift pump device 1, Front / back plate portion 3, 4 Side plate portion 5 Bottom plate portion 6 Pipe joint for inflow pipe 7 Submerged weir plate 8 Overflow flat weir plate 2a, 5a, 8a Engagement groove 9a, 9b Flat weir dividing plate 10a-10b Outlet piping pipe joint 11 Lift pipe 12 Air supply pipe 13 Transfer pipe 14 Circulation return pipe 15 Return pipe 16 water collecting pipe 17 water passage holes 18 fitting 19 inspection tube 20,20a plug S _1, S ₂ smaller combined treatment septic tank A contaminant removal tank A ₁ sedimentation separation tank B anaerobic filter bed chamber B ₁ anaerobic filter bed chamber first chamber B ₂ Anaerobic filter bed second chamber C Contact aeration tank D Precipitation tank E Disinfection tank F Pump tank P Air lift pump device H High level water level L Low level water level line 21 Inlet pipe 22 Outlet pipe 23 Anaerobic filter bed 24 Aerobic Filter bed 25 Inlet guide 26 Downflow passage 27 Front partition wall 28 Advection port 29 Advection guide 30 Advection passage 31 Intermediate partition wall 32 Advection port 33 Advection guide 34 Advection passage 35 Air diffuser 36 Upflow passage 37 Air supply air pipe 38 Back partition 39 Submerged flow Mouth 40 Baffle plate 41 Convergence opening 42 Receiving gutter 43 Disinfection cylinder 44 Disinfection partition 45 Submerged opening 46 Backwashing device 47 Extraction tube 48,51 Air supply tube 49 Transfer tube 50,52 Air supply main line

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-222780 (JP, A) JP-A-53-56112 (JP, U) JP-A-63-32699 (JP, U) JP-A-1- Microfilm (JP, U) photographing the contents of the specification and drawings attached to the application form No. 4325 (Japanese Utility Model Application No. 2-95597) (58) Field surveyed (Int. Cl. ⁷ , DB name) C02F 3 / 00 F16L 41/00

Claims (3)

(57) [Claims] The inside of a measuring box is filled with an inflow chamber X by an overflow flat weir plate 8.
And partition formed with side distribution chamber Z side, the percentage of overflow width of the overflow flat sheathing board 8, flat dam segment plate 9a defining the distribution chamber Z, 9b variable adjusting comprising treated water distribution metering by In the apparatus , an intermediate chamber Y is defined between the inflow chamber X and the distribution chamber Z, and the intermediate chamber Y and the inflow chamber X are partitioned by the submerged weir plate 7.
And the intermediate chamber Y and the distribution chamber Z are partitioned by the overflow flat weir plate 8.
And a rear inner wall surface of the overflow flat sheathing board 8 constituting the distribution chamber Z,
Forming an inner wall surface engaging groove 8a of the back plate portion 2 of the weighing boxes, as well as irregularities formed 2a a at regular intervals, the even bottom plate 5 of the distributor chamber Z engagement groove 8a, the 2a
The engaging groove 5a is formed in a concave and convex manner, and the engaging groove 8a, 2a, 5a at an appropriate position in the distribution chamber Z is flattened.
A dispensing and measuring device for treated water, wherein the partition plates 9a and 9b are inserted . 2. An inflow chamber X is provided with a lift pipe 11 for pumping treated water from a pump tank F, and divided chambers Z _{1 to} Z ₃ are provided with a pump tank F.
Pipe 15 to the disinfection tank E, and the circulation return pipe 14 to the forefront of the impurity removal tank A or the anaerobic filter bed tank B or to the first chamber B1 of the anaerobic filter bed tank. 2. The apparatus for distributing and measuring treated water according to claim 1, wherein the apparatus is piped. 3. A water collecting pipe 16 is submerged and supported in the settling tank D, and the water collecting pipe 16 and the pump tank F are communicably connected to each other. The treated water lift pipe 11 and the air lift air supply pipe 12 are connected to the pump tank F. 3. The apparatus for distributing and measuring treated water according to claim 1, wherein an upper portion of the lift pipe 11 is connected to the inflow chamber X of the measuring box.