JP5932288B2 - Adsorption separation device - Google Patents

Description

  The present invention relates to an adsorption / separation apparatus suitable for adsorbing and separating adsorbed substances such as metals and heavy metal substances contained in waste water.

  As a conventional device for agglomerating, precipitating, and separating suspended substances in wastewater, in the agglomeration tank, the raw water flowing from the inlet and the microbial floc introduced from the inlet are stirred by a stirrer, and suspended particles in the raw water And microbial flocs come into contact with each other, and agglomeration flocs are formed by adsorption and cross-linking action. An apparatus is known that settles and accumulates at the bottom of the hopper and that the separated supernatant water is discharged from the overflow basin as treated water (see Patent Document 1).

  In addition, in order to remove heavy metal substances and radioactive substances in the waste water, an apparatus is known in which these substances are adsorbed by an adsorbing substance such as zeolite or pigment contained in a cassette-like container and replaced for each container.

JP 2007-307534 A

  According to this former former apparatus, since the raw water containing the microbial flocs is simply stirred in the stirring tank while flowing in the circumferential direction, the agglomerated flocs grown by adsorption of the raw water and the microbial flocs are stirred. In the precipitation tank, the insufficiently grown flocculated flocs are not sufficiently precipitated by gravity, so that the separation of the flocculated flocs and the supernatant water cannot be achieved reliably. It was.

  Also, according to the latter latter apparatus, there is a problem that adsorbed substances such as zeolite and pigment cannot be separated continuously after adsorption.

  The present invention eliminates these problems, makes it possible to reliably adsorb and separate adsorbed substances such as metals and heavy metal substances contained in wastewater, and an adsorption separation apparatus that can also be applied to aggregating and separating suspended substances. The purpose is to provide.

In order to achieve this object, the present invention provides a vertical container having a classification leg at the bottom and a carrier supply pipe connected to the top, and a container for forming a circulation flow of raw water in the container. Rotating blade means for generating a swirl flow that moves downward while swirling along the inner peripheral surface of the container, and provided at the center of the bottom surface of the container. A liquid flow direction changing means for causing the raw water to flow upward at the center of the container; a discharge pipe for a carrier adsorbing a substance to be adsorbed in the raw water connected to the classification leg; and an upper part of the container connected to, Ri Na more and the discharge pipe of the treated water, in the classification leg, that of connecting the inflow conduit of the treated water flowing into a part of the treated water discharged from the discharge pipe of the treated water Features.

  According to the present invention, there is an effect of providing an adsorptive separation device that can reliably adsorb and separate substances to be adsorbed such as metals and heavy metal substances contained in wastewater, and an effect that can also be applied to agglomeration separation. Have.

It is a longitudinal cross-sectional explanatory drawing of the adsorption separation apparatus of Example 1 of this invention. It is the II sectional view taken on the line of FIG. It is a longitudinal cross-sectional explanatory drawing of the adsorption separation apparatus of Example 2 of this invention.

  The example of the form for carrying out the present invention is shown below.

  A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a longitudinal sectional explanatory view of an adsorption separation apparatus according to Embodiment 1 of the present invention, and FIG.

  Reference numeral 1 denotes an adsorption / separation apparatus of the present embodiment, 2 denotes a container of the adsorption / separation apparatus 1, and the container 2 is a vertical bottomed cylindrical shape and is configured by binding a lid 2a to the upper end thereof. The bottom 2b of the container 2 is curved downward, and a through hole 2c is formed at the center of the bottom 2b, and the classification leg 3 is fixed to the lower surface of the bottom 2b. The inside of the classifying leg 3 communicated with the inside of the container 2 through the hole 2c.

  Reference numeral 4 denotes a rotating shaft. The rotating shaft 4 is rotatably supported by a bearing portion 5 fixed to the center portion of the lid body 2 a and is suspended from the center portion in the container 2, and a lower end portion of the rotating shaft 4. A flat blade type agitating blade 6 as a rotating blade means is fixed to the upper end of the rotating shaft 4 and an upper end portion of the rotating shaft 4 is connected to a rotation driving source (not shown), and the stirring blade 6 is driven by the rotation driving source. I made it rotate.

  Reference numeral 7 denotes a liquid flow direction changing means. The liquid flow direction changing means 7 includes a plurality of, for example, four linear strip-like baffles 7a fixed radially to the inner surface of the bottom portion 2b. As shown in FIG. 2, the agitator blades 6a are fixed in parallel to the distance d from the radial line R passing through the center of the bottom portion 2b, and the inner ends of the baffles 7a It was made to correspond to the periphery of the through-hole 2c.

  Reference numeral 8 denotes a first supply pipe that is a carrier supply pipe connected to the lid 2a, 9 denotes a second supply pipe that is a raw water supply pipe connected to an intermediate portion of the side wall of the container 2, A first discharge pipe that is a treated water discharge pipe connected to the upper portion of the side wall, 11 is a second discharge pipe that is a carrier discharge pipe connected to the side wall of the classification leg 3, and 12 is the classification. An inflow pipe for treated water connected to the lower end of the leg 3 is shown. A return pipe 13 branched from the first discharge pipe 10 is connected to the inflow pipe 12, and a pump 14 is connected to the return pipe 13. Intervened.

  Next, the operation and effect of the adsorption / separation apparatus 1 of the first embodiment will be described.

  When the raw water of the waste water containing the adsorbed substance of metal or heavy metal substance is filled into the container 2 from the second supply pipe 9 to a predetermined level, the rotation driving source is driven to rotate the stirring blade 6 The raw water generates a flow Fa that moves downward while swirling along the inner peripheral surface of the container 2. When the flow Fa reaches the vicinity of the bottom 2 b, each baffle 7 a rotates the stirring blade 6. Since there is a distance d from the radial line R at the rear of the direction, the raw water hitting the baffle 7a becomes a flow Fb that rises while turning around the center of the container 2, and the flow of Fa and Fb It becomes a circulating flow. In the stirring and mixing unit 15 based on such a flow, when a porous substance such as zeolite or pigment or a carrier P for a chemically adsorbed substance is supplied into the container 2 from the first supply pipe 8, The adsorbed substance is efficiently adsorbed by the carrier P to become a heavy carrier Pa and flows down into the classification leg 3, and the heavy carrier Pa separated in the classification leg 3 is discharged from the second discharge pipe 11. The

  On the other hand, the treated water from which the substance to be adsorbed is removed from the raw water by adsorption is discharged from the first discharge pipe 10. A part of the treated water discharged from the first discharge pipe 10 flows into the classification leg 3 from the inflow pipe 12 via the return pipe 13 by the pump 14, and in the classification leg 3. Prevent blockage and improve flow.

  A second embodiment of the present invention will be described with reference to FIG.

  FIG. 3 is a longitudinal cross-sectional explanatory view of an adsorption separation apparatus according to Embodiment 2 of the present invention.

  In the second embodiment, an example in which three adsorption separation devices, that is, the first adsorption separation device 1A, the second adsorption separation device 1B, and the third adsorption separation device 1C are juxtaposed is shown. The front end of the treated water discharge line 10A of the apparatus 1A is connected to the middle part of the side wall of the container 2B of the second adsorption / separation apparatus 1B, and the treated water discharge line of the second adsorption / separation apparatus 1B. 10B is connected to the middle part of the side wall of the container 2C of the third adsorption / separation apparatus 1C, and discharged from the treated water connected to the upper part of the side wall of the container 2C of the third adsorption / separation apparatus 1C. A return line 13C branched from the line 10C includes an inflow line 12A for treated water connected to the first classification leg 3A of the first adsorption separation apparatus 1A, and a second classification leg 3B of the second adsorption separation apparatus 1B. Treated water inflow conduit 12B, and the third adsorption separation Connecting branches to the inflow conduit 12C of the treated water which is connected to the third Bunkyuashi 3C of location 1C.

  Reference numerals 8A, 8B, 8C denote carrier P supply lines connected to the lids 2a of the containers 2A, 2B, 2C of the first adsorption separation device 1A, the second adsorption separation device 1B, and the third adsorption separation device 1C, respectively. , 11A, 11B, and 11C denote second discharge conduits of the carrier Pa connected to the first classifying leg 3A, the second classifying leg 3B, and the third classifying leg 3C, respectively.

  Next, operations and effects of the adsorption / separation apparatuses 1A, 1B, and 1C according to the second embodiment will be described.

  In the first adsorption / separation apparatus 1A, treated water obtained by adsorbing and removing a metal or a heavy metal substance to be adsorbed by the carrier P from the raw water as in the first embodiment is discharged from the discharge pipe 10A, and the raw water. The substance to be adsorbed is efficiently adsorbed on the carrier P to become a heavy carrier Pa and flows down into the classification leg 3A, and the heavy carrier Pa separated in the classification leg 3A is discharged from the discharge pipe 11A. The Further, in the second adsorption / separation apparatus 1B, the remaining metal or heavy metal substance adsorbed material is removed by the carrier P from the treated water flowing in from the discharge pipe 10A, and the treated water thus removed is removed from the discharged pipe. The metal or heavy metal substance adsorbed substance discharged from the passage 10B and remaining in the treated water is efficiently adsorbed by the carrier P, and the heavy carrier Pa is discharged from the discharge pipe 11B as described above. In the adsorption / separation apparatus 1C, the adsorption separation is further performed as described above, and the treated water in which the substance to be adsorbed does not remain is discharged from the discharge pipe 10C, and a part of it is returned to the classification leg through the return pipe 13C. Flows into 3A, 3B, 3C.

  Thus, in the present Example 2, adsorption separation is completely performed.

  In the second embodiment, an example of three adsorption / separation devices has been described. However, two or four or more adsorption / separation devices may be installed as necessary.

  The adsorption separation apparatus of the present invention is used for adsorption separation in wastewater treatment / washing water treatment, chemicals, medical products, foods, and the like.

DESCRIPTION OF SYMBOLS 1 Adsorption separation apparatus 1A Adsorption separation apparatus 1B Adsorption separation apparatus 1C Adsorption separation apparatus 2 Container 2b Bottom part 2A Container 2B Container 2C Container 3 Classification leg 3A Classification leg 3B Classification leg 3C Classification leg 6 Rotary blade means 7 Liquid flow direction change means 7a Baffle 8 carrier supply line 9 raw water supply line 10 treated water discharge line 11 carrier discharge line 12 treated water inflow line 13 return line

Claims (4)

A vertical container having a classification leg at the bottom and a carrier supply line connected to the top;
A swirling flow is provided for forming a circulating flow of raw water in the container, and moves the raw water in the container downward while rotating along the inner peripheral surface of the container. A rotary vane means to be provided, and a liquid flow direction changing means for causing the raw water to flow upward in the central part of the container, provided in the central part of the bottom surface in the container,
A carrier discharge line connected to the classifying legs and adsorbing a substance to be adsorbed in the raw water;
Was connected to the upper portion of the container, Ri Na more and the discharge pipe of the treated water,
An adsorptive separation device in which an inflow conduit for treated water into which a part of the treated water discharged from the treated water discharge conduit flows into the classification leg is connected . The adsorption separation apparatus according to claim 1, wherein the liquid flow direction changing means includes baffles provided radially on the bottom surface . The baffle is formed of a belt-like plate disposed at a predetermined distance from the radial line at the center of the bottom surface behind the rotating blade means in the rotational direction, and the inner end of each baffle is disposed inside the container. The adsorption separation device according to claim 2, wherein the adsorption separation device is made to coincide with a peripheral edge of a through hole formed in a central portion of the bottom portion of the container, which communicates with the inside of the classification leg . A vertical container having a classification leg at the bottom and a carrier supply line connected to the top;
A swirling flow is provided for forming a circulating flow of raw water in the container, and moves the raw water in the container downward while rotating along the inner peripheral surface of the container. A rotary vane means to be provided, and a liquid flow direction changing means for causing the raw water to flow upward in the central part of the container, provided in the central part of the bottom surface in the container,
A carrier discharge line connected to the classifying legs and adsorbing a substance to be adsorbed in the raw water;
It consists of a drain line for treated water connected to the upper part of the container,
A plurality of the above-mentioned containers are provided in parallel, and the discharge pipe for the treated water of the former container is connected to the latter container
A return line branched from the treated water discharge line of the final stage container, and an adsorption line connected to the treated water inflow line provided by connecting the return line to the classification leg of the preceding stage container Separation device.

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