JPS58189008A - Apparatus for removing turbidity of water - Google Patents

Abstract

PURPOSE:To make it possible to withdraw accumulated flocs out of a system at any time, in an apparatus for removing the turbidity of water consisting of an upwardly flowing type fluidized separation tank and a precipitative concentration tank partitioned by a partition wall, by providing a sludge storing part equipped with a discharge port to the partition plate. CONSTITUTION:Water to be treated is flowed into the bottom part of a fluidized separation tank 1 from an inflow port 3 through an introducing pipe 2 and a fluidized bed 3 comprising flocs is formed in the tank 1 by the upwardly directed stream of water to be treated. Flocs are precipitated to a precipitative concn. tank 7 through a precipitation pipe 5 while clarified water is rised through a riser pipe 9. The partition plate 8 of the separation tank 1 and the concn. tank 7 is formed into a funnel shape and a sludge storing part 11 is formed in the vicinity of the center thereof. By this structure, because flocs incapable of being floated by the upwardly directed stream in the separation tank 1 are not accumulated on the partition plate and precipitated to the storing part 11, there is no generation of a carbon dioxide gas, a methane gas or a hydrogen sulfide gas due to fermentation of sludge resulting from long-term accumulation and the perfect removal of turbidity can be carried out.

Description

[Detailed Description of the Invention] The present invention relates to a water turbidity device, the object of which is to include an upward flow type flow separation tank for suspended water and a sedimentation concentration tank provided isolated from this from the snoring area. To provide a water turbidity device capable of preventing sludge from remaining accumulated in an upflow flow separation tank for a long period of time in a water filtration device.

The conventional water smelting device is as shown in Japanese Patent Publication No. 42/-25986, that is, the inlet of the water to be treated is located at the bottom.
Upward flow type flow separation of suspended water, each having a clear water outlet at the top [a sedimentation tank installed separately from the monk and the water separation tank, and an inlet for treated water and an outlet for clear water in the flow separation tank] A substantially vertical floc sedimentation tube having an upper end opened in the middle part thereof and a lower end thereof communicating with the sedimentation concentration tank; ! ! The water removal device was equipped with a riser pipe for clear water, and the pipe was configured to communicate with the T & oyster separation tank at a higher place than the upper end of the settling pipe.

In the Joki water removal device 1, most of the flocs grown in the fluid separation tank pass through the floc sedimentation tube [, and sedimentation I
The sludge is stored as a sludge in the M tank, and then the sludge is taken out of the storage room. However, some of the flocs may grow to a large size that cannot be floated up by the upward flow in the fluidized separation tank, and as a result, the flocs are separated from the fluidized separation tank and the sedimentation thickener. The sludge accumulates on the top surface of the partition plate that separates the sludge. A part of the accumulated sludge pool may be fragmented by the flow in the flow separation tank and introduced into the floc settling tube, but a certain amount of the sludge pool ends up being deposited in the same position for a long time.

By the way, regardless of whether this sludge basin is made of inorganic substances or fermentable organic substances, if the sludge basin is made of fermentable organic substances, the sludge basin ferments during long-term accumulation and produces carbon dioxide gas, methane gas, and sulfide. Hydrogen gas etc. are generated, and these gases become bubbles and adhere to the 70 pieces in the fluid separation tank, which reduces the specific gravity of the flocs and rises inside the fluid outside 1i41, which should originally be separated. There is an inconvenience that the flocs may flow out from the clearing outlet along with the clear water, and complete turbidity removal cannot be performed.

In order to solve the above-mentioned problems, the present invention combines a sludge storage section with a partition plate, and after concentrating the sludge collected in this sludge storage section, it is extracted from the system at any time before fermentation, thereby achieving complete turbidity removal. We will provide water removal and equipment to ensure this.

Next, referring to Fig. rkJ, Fig. 1 is a cross-sectional view of the center W of the conventional apparatus, and reference numeral 1 is a fluidic separation tank, and the inlet S of the water to be treated is located near the bottom of the external fluidic 111 tank 1. A similar introduction pipe 2 is arranged in the fluid separation tank 1, and 4
Fi is a flock of flocs that flows in from the inlet 6 of the water to be treated and is formed by the flow force M due to the upward flow of the water to be treated.

Also, reference numeral 7 indicates a partition plate 8 (te g
4 is a sedimentation concentration tank separated from the sedimentation concentration tank 7, and the bottom W6 of the sedimentation concentration tank 7 is
is provided with a discharge port 15b.

A floc sedimentation tube 5 made of a substantially vertical pipe or a Vi cylinder is disposed between the flow outside 11 and the sedimentation concentration tank 7, and the upper part of the floc sedimentation tube 5 is inserted into the fluid separation tank 1 and opened. The lower end is inserted into the sedimentation concentration tank 7 and opened.

The code 6Fi is the clear wood located at the upper part of the fluidic separation tank 1, and the top of the sedimentation S-condenser 7 and the clear water section 6 are communicated by a clear water riser pipe 9, and the upper end of the clear water riser pipe 9 is It is constructed so that it always opens higher than the upper end of the 70-tub sedimentation tube 5. Note that the upper end of the floc settling tube 5 opens at a higher position than the inlet 5 of the water to be treated in the fluid separation tank 1.

FIG. 2 is a central vertical sectional view of an embodiment of the device of the present invention;
A sludge storage section 11 is formed by recessing the center of the partition plate 8 into a concave m.

5 to 7 show other embodiments of the apparatus of the present invention, and in FIG. S, the partition plate 8 is formed into a funnel shape, and the central part thereof is recessed to form a sludge storage section 11. The introduction pipe 2 is arranged vertically from near the center of the flow outside 11, the inlet S of the water to be treated of the introduction pipe 2 is directed towards the sludge storage part 11, and a baffle plate is installed above the sludge storage part 11. 12, and the baffle plate 1 is configured to be movable up and down.
2 and the sludge storage section 11 can be freely adjusted.

FIG. 4 shows the embodiment shown in the previous figure with scrapers 111113m and 13b added, and the scraping blade 151 is installed at a position i to scrape 70 pieces near the partition plate 8 adjacent to the sludge storage section 11. The scraping blade 15b is disposed at a position to scrape the sludge pool near the bottom of the sedimentation drive ('J7).

A sludge outflow nozzle 14 is provided at the lowest center end of the fifth Fi funnel-shaped partition plate 8, and a packet-shaped sludge storage section 11 is provided below the nozzle.

In FIG. 6, the sedimentation concentration PII 7 is formed into a funnel shape, and a concave sludge storage part 11 is provided at the bottom end of the funnel, and the bottom end of the sludge outflow nozzle 14 provided at the bottom end of the partition plate 8 is The sludge 11w extends down to the bottom of the section 11.

In FIGS. 2 to 6, the sludge accumulated in the sludge storage section 11 is extracted to the outside of the thread via the discharge port 15&.

In Fig. 7, a sludge flow Tagawa nozzle 14 is provided at the lowermost end of the center of the funnel-shaped partition &8, and a packet-shaped sludge storage section 1 is provided below the nozzle.
1 arrangement, and on the other hand, the sludge pool near the bottom of the Vi is scraped off in the sedimentation thickening tank 7! A scraping blade 15b is disposed on the blade 7.

The present invention has the above-mentioned configuration, and the water to be treated that flows into the flow portion 11 from the water inlet S to be treated forms an upward flow and forms a flock of flocs 4 that flows into the tank. The clear water that has passed through and has been turbid rises as shown by the arrow in the figure, and is discharged to the outside of the thread from the clear water outlet 10 via the clear water W66.

On the other hand, the flocs separated from the water to be treated reduce the porosity of the 70-piece colony 4 and cause the floc group to rise, causing the excess flocs to fall from the upper edge of the 70-piece settling tube 5 into the tube. Therefore, it is possible to hold the floc group 4 at the same position as the upper end of the sedimentation tube 5 by 70 pieces. The flocs fall through the sedimentation tube 5 and settle into the sediment concentration &I at the bottom.
Precipitates are deposited in the tank and are dehydrated and concentrated. On the other hand, the clear water separated in the sedimentation concentration M7 rises in the riser pipe 9, is discharged into the clear water section 6 in the fluidized separation tank 1, and the dehydrated and concentrated sludge pool is discharged to the outside of the thread from the discharge port 15b. The lower end of the floc sedimentation tube 5 is extra protruded into the sedimentation-cured cypress 7 to prevent a part of the flocs from entering the clear water riser tube 9.

In addition, the water to be treated in the tank rises through the gap formed by the tank wall and the 70-tsuk sedimentation pipe: □115, and the cross-sectional area expands dramatically at the upper end of the 70-tsukuk settling pipe 5. Clear water section 641: Stitch. On the other hand, as the operation progresses, the empty space 1lI4A of the floc colony 4 decreases, and the part of the floc colony 40 that is pushed up further above the upper edge of the floc sedimentation l#5 due to the lifting force of the upward flow overflows the upper edge. It flows and falls into the pipe.

Above the floc sedimentation t5, there is an upward flow that rises around the area, while the upper part of the floc sedimentation tube 5 and the sedimentation concentration tank 7 connected thereto is filled with still clear water. I can never imagine a flow of flow. Therefore, the flocs falling through the floc settling tube are not affected by the upward flow and quickly settle. However, if the floc sedimentation tube is filled with 70 flocs and settles, 1w
Based on the density difference between the clear water and the floc colony, a strong continuous downward directional flow is generated in the floc settling tube.
A strong suction force is generated around the upper edge of the floc sedimentation tube, effectively pulling the excess 70 pieces into the floc sedimentation tube. In addition, since the directional flow and the direction of gravity of 70 points coincide, the flocs flow down in the floc settling tube at high speed, and a clear water riser tube 9 is disposed at the top of the 1 settling # condenser tank 7. The clear water accompanied by the flocs settling in the sedimentation concentration tank and the clear water rejected when the flocs are deposited are discharged into the clear water section 6 of the fluidic separation tank 1 through the riser pipe 9. . Therefore, a substantial water flow is generated within the apparatus, which directs the floc sedimentation tube 5 downward, passes through the sedimentation concentration tank 7, and heads upward through the clear water riser tube 9.

By the way, if 70 pieces of sludge accumulate on the upper surface of the partition plate 8 as a sludge pool, the sludge pool will be collected in the sludge storage section 11 and will be extracted from the system via the sludge pool Fi discharge port 15m. Is possible.

Furthermore, by providing a 12ft baffle plate above the sludge storage section 11, it is possible to prevent the sludge storage ffM section 11 &: stored sludge pool from being rolled up into the fluidization separation m again due to the upward flow within the fluidization separation tank 1. If the baffle plate 12 is made vertically movable, the distance between the baffle plate 12 and the sludge storage section 11 can be adjusted according to the amount of accumulation in the sludge pool, and the concentration of the sludge pool can be improved. can be done more like a young tree.

Ninth, if the partition plate 8 is formed into a funnel shape, the efficiency of floc collection will improve and the scraping plate 1! If +a and 15b are used, it is also possible to increase the first-floor mud collection efficiency.

Next, in the example shown in FIG. 5, a sludge flow nozzle 14 is provided at the bottom end of the partition plate, and a packet-shaped sludge storage r! /6+1 is placed below the nozzle 14. The lower end of the nozzle 14 is placed below the center of the sludge storage section 11 f! i6, the sludge stored in the sludge storage section 11 seals the fluidized separation layer 1 and separates it from the sedimentation #I condensation layer 7, so the upward flow in the fluidized portion 11 prevents the sludge pool from forming. It has the effect of preventing it from being rolled up. Further, in the example shown in FIG. 6, sludge is discharged only from the sludge storage MI section 11, so the overall structure is simple, operation is easy, and equipment costs are reduced. Therefore, according to the present invention, the sludge layer is kept at the same position for a long period of time [jl: not allowed to accumulate;
1. Even when treating water containing fermentable organic matter, flocs do not flow out together with clear water, and there is an excellent effect of complete turbidity removal.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a central vertical cross-sectional view of a conventional device, and FIGS. 2 to 7 are central vertical cross-sectional views showing embodiments of the present invention. 1... Fluid separation tank 2- Conduit 5... Treated water inlet 4-=7'/group 5-70 sedimentation tube 6... Clear water section 7... Sedimentation concentration tank 8.
... Partition plate 9 ... Clear water riser pipe 1o ... Clear water outlet 11 ... Sludge storage l9612 - Baffle plate 1!5N
, 15b...Scraping II 14- Nozzle 15a, 1
5b-・Discharge port

Claims (1)

[Scope of Claims] (1) An upward flow type flow separation tank for suspended water that has a treated water inlet at the bottom and a clear water outlet at the top, and a sedimentation concentration tank that is isolated from this tank; A practically vertical 70-tube sedimentation tube having an upper end opened at an intermediate portion between the treated water inlet and the clear water outlet in the fluid separation tank and communicating the lower end with the sedimentation cypress, and the sedimentation tube. Separately from the pipe, there is provided a clear water riser pipe whose lower end communicates with the Moeki sedimentation tank, and at a higher place than the upper end of the sedimentation pipe, the flow separation fII (a water removal pipe configured so as to communicate) is provided. In the apparatus, the fluid separation tank and the sedimentation concentration &if#I are set at vJl.
A water clarifier, characterized in that a sludge storage section is combined with a partition plate that separates the sludge, and a discharge port is provided in the sludge storage section. The water clarification device according to claim 1. (3) The water clarification device for the first Saiki station as claimed in claim 1, wherein the partition plate is recessed near the center to form a sludge storage section. (4) A sludge outflow nozzle is provided at the lowermost end of the partition plate, and a packet-shaped sludge reservoir is disposed below the nozzle, and the lower end of the nozzle is positioned below the reservoir. Water clarifier. (5) The sedimentation thickening tank is formed into a funnel shape, and a concave sludge storage section is provided at the bottom end of the tank, and the bottom end of the sludge outflow nozzle provided at the bottom end of the partition plate is The sludge L' 14
2. The water clarifier according to claim 1, wherein the water clarifier is lowered to a part of the water.