JP2006088021A - Water treatment system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water treatment system which can surely improve water quality by spreading a coagulating and precipitating agent mainly comprising bryozoa all over a lake or a river of which the water quality is to be improved. <P>SOLUTION: Bubble curtains are formed near the upstream inlet side 3 and downstream discharge side 5 of a water flow. The bubble curtain is formed by jetting the coagulating and precipitating agent 7 sent from a coagulant feeder and nano bubbles 8 fed from a nano bubble generator in a state mixing them by an ejector 13, into water. The coagulating and precipitating agent 7 is mainly made of bryozoa, a fossil of bryozoa, and adsorbs heavy metals, cutting oil, waste oil or the like in sludge accumulating on the bottom of the lake 1 to neutralize the ph and precipitate them. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water treatment system for improving water quality in water such as water polluted lakes, rivers, aquaculture farms, sewers or water purification plants, and in particular, using Briozoa, which is a fossil of moss, to improve water quality. It relates to a water treatment system.

  In general, water pollution occurs when domestic wastewater flows into lakes and rivers, and nutrients such as nitrogen and phosphoric acid digest a large amount of oxygen in the water during decay. As a result, anaerobic bacteria that are the main sludge breed and emit odors and generate methane gas. In addition, the dredged eutrophic float causes abnormal occurrence of plankton, causing red tides and blue tides, causing the death of the tidal flats and the burning phenomenon of the tidal flats, and drastically messing up the ecosystem.

  In recent years, Bliozoa, a fossil of a lichen, has been discovered, and its main component, calcium carbonate, is much more active than ordinary low-pressure, high-temperature limestone, so it is extremely effective for soil improvement and water quality improvement. It has been known. In particular, Bryazoa adsorbs and settles floating nutrients and activates photosynthetic bacteria. Furthermore, the bactericidal effect kills anaerobic bacteria and activates the aerobic bacteria, thereby stopping the generation of methane gas. And since it has a deodorizing effect by decomposing sludge etc. by generating oxygen, a bad odor will be eliminated.

  Conventionally, those utilizing this Bliozoa have been proposed in the patent literature.

  For example, Patent Document 1 discloses a technology for processing powdered Bliozoa into a coagulating sedimentation agent, which is effective for purification of rivers, lakes, and seawater, purification of construction wastewater, factory wastewater, turbid water, pollution treatment, etc. It's being used. In other words, Blyazoa is calcite in water by the action of calcium carbonate, and physically adsorbs heavy metals, cutting oil, ink, sulfite gas, etc. contained in sludge, neutralizes ph by adsorption, and settles and fixes. . Thereby, the water quality can be purified.

  Moreover, in patent document 2, the water purifying system which stirs Bryozore in water and purifies water is provided. According to this, as shown in FIG. 9, this water purification system 80 includes an intake means 81 for tackling the contaminated water from the lake 1 to the agitation tank 82, an agitation device 83 for adding and aggregating the flocculant to the contaminated water, A reaction tank 84 that takes in the polluted water stirred by the stirring device 83 and generates purified water and flocs by the action of the flocculant, and a discharge means 85 that releases the purified water and flocs generated in the reaction tank 84 to the natural world are provided. The stirring device 83 is provided with a vertical rotating shaft 831, and a flat plate-like upper blade 833 having a punched hole 832 and a lower blade 834 that causes a rising water flow are integrally provided on the rotating shaft 831.

As a result, the flocculant obtained by powder processing of Bryozoa can be dispersed throughout the liquid and exhibit the performance of the flocculant sufficiently.
Japanese Patent No. 3013249 (pages 4-7) JP 2003-38946 A (refer to pages 3 to 4 and FIG. 4)

  However, in the conventional water purification system disclosed in Patent Document 2, the polluted water from the river or lake 1 is once taken into the stirring device 83 and sufficiently contained with the flocculant, and then the reaction vessel from the stirring device 83 is used. It is sent to 84, separated into purified water and floc and released again into the river and lake 1.

  On the other hand, flocs containing flocculants accumulate and permeate on sludge at the bottom of ponds and swamps, causing calcium carbonate contained in flocs to generate oxygen, and flocs being anaerobic bacteria in sludge. It will be promoted water quality improvement and soil improvement by reducing.

  In the water purification system 80 shown in the above-mentioned Patent Document 2, the released floc accumulates in the vicinity of the release site, and the surrounding sludge and sludge are purified, but it is difficult to reach the entire river / lake 1. For this reason, problems remain in the overall purification of rivers and lakes 1. Moreover, in order to take in polluted water from the river and the lake 1, the apparatus itself becomes large-sized and the installation space was also taken widely.

The present invention solves the above-mentioned problems, and agglomerated sedimentation agent, in particular, aggregated sedimentation agent containing Bliozoa, is reliably agitated to improve the water quality of partitioned rivers and lakes and reduce the installation space. It aims at providing the water treatment system which can be performed, and in order to achieve this objective, it comprises as follows. That is, the water treatment system of the present invention is
In the first aspect of the present invention, a water purification treatment device having a coagulating sedimentation agent supply device that supplies the coagulating sedimentation agent and a fluid ejection device that injects a fluid into the water, the vicinity of the supply side and the discharge side of the water flow Near the supply side of the water flow by injecting the fluid from the fluid injection device to the coagulation sedimentation agent supplied from the coagulation sedimentation agent supply device. A bubble curtain is formed in the water near the discharge side, the supply side, or the discharge side.

  The invention according to claim 2 is characterized in that the coagulating sedimentation agent includes a powdered Bryozoa.

  The invention according to claim 3 is characterized in that the water purification treatment apparatus is provided near the supply side and the discharge side, the supply side or the discharge side of the water flow of the lake.

  In the invention according to claim 4, the water purification treatment device is provided near the supply side and the discharge side or the supply side or the discharge side of the water flow of the river, and a part of the water purification treatment device is It is characterized by being fixed to the bridge girder.

  The invention according to claim 5 is characterized in that the water purification apparatus is provided in the vicinity of the supply side and the discharge side or the supply side or the discharge side of the water flow with respect to the tides in the farm. Yes.

  In a sixth aspect of the present invention, a water purification treatment device having a coagulation sedimentation agent supply device for supplying a coagulation sedimentation agent and a fluid ejection device for injecting a fluid into the water is supplied to a final treatment tank in a sewage treatment plant. By providing the fluid from the fluid ejecting device to the coagulating sedimentation agent supplied from the coagulating sedimentation agent supply device provided near the inlet side or the discharge side, A bubble curtain is formed in the water near the discharge side.

  In the invention according to claim 7, a water purification treatment device having a coagulation sedimentation agent supply device for supplying the coagulation sedimentation agent and a fluid ejection device for injecting a fluid into the water is provided on the supply side at the intake of the water purification plant. By providing the fluid from the fluid ejecting device to the coagulating sedimentation agent supplied from the coagulating sedimentation agent supply device, near the supply side or the discharge side of the intake port. A bubble curtain is formed in the water.

  The invention according to claim 8 is characterized in that the coagulating sedimentation agent according to claims 6 to 7 includes a powder-processed Bryosore.

  The invention according to claim 9 is characterized in that the fluid ejecting apparatus is configured to be able to form nanobubbles.

  According to the first aspect of the present invention, the coagulating sedimentation agent is injected in the vicinity of the supply side and the discharge side of the water flow by injecting the fluid with the fluid injection device installed near the supply side and the discharge side of the water flow. A bubble curtain is formed in the water. This closes the range where water quality is to be improved and stirs the coagulating sedimentation agent so that it is sufficiently distributed in both bubble curtains. That is, the bubble curtain is formed by supplying the coagulating sedimentation agent into the water to make it foam. If this bubble curtain is formed in the water on the supply side and the discharge side, a large vessel will be formed, and the coagulating sedimentation agent will always ride on the water flow that flows from the upstream in the vessel and will be discharged from the supply side. Will move toward. The coagulating sedimentation agent that moves in the water separates sludge substances such as sludge heavy metals and cutting oil, or ink and sulfurous acid gas that settle on the bottom of the water. This can improve the water quality.

  Moreover, by forming bubble curtains in the water near the supply side and the discharge side of the water flow, piping members and equipment for taking water from the water flow into the land and releasing it back into the water flow are not required. Therefore, the equipment space is not widened, and the equipment itself can be made compact.

  In addition, even if this bubble curtain is formed only in one of the waters near the supply side or the discharge side of the water flow, the water purification process using the coagulating sedimentation material is performed, and environmental pollution can be improved. .

  According to the invention described in claim 2, since the coagulating sedimentation agent described in claim 1 contains powder-processed Bryozoa which is a fossil of moss, the calcium carbonate forming Bryozoa is a bottom in water. It becomes neutralized by adsorbing with sludge heavy metals, cutting oil, ink, sulfurous acid gas, etc. In addition, Blyazoa adsorbs and settles the floating nutrients and activates photosynthetic bacteria. Furthermore, the bactericidal effect kills anaerobic bacteria and activates the aerobic bacteria, thereby stopping the generation of methane gas. And since it has a deodorizing effect by decomposing sludge etc. by generating oxygen, a bad odor will be eliminated. As a result, sludge that has settled in the water is converted into non-sludge and purified. In other words, because the Bliozoa itself is a fossil of a moss and is an inorganic substance, the contaminated water is purified without causing side effects. As a result, animals and plants living in water are activated. Therefore, environmental pollution due to water quality, which has been regarded as a problem in the past, can be improved without using a large-scale device, and can be greatly useful as an environmental improvement.

  According to the invention described in claim 3, the water purification apparatus according to claim 1 is installed in the vicinity of the supply side and the discharge side of the lake, and bubbles are generated in the water near the supply side and the discharge side of the lake. Form a curtain. As a result, the coagulating sedimentation agent or the coagulant sedimentation agent mainly composed of Blyazoa is distributed around the periphery and bottom of the contaminated lake and the lake is purified. Therefore, for example, many animals and plants can live in the lake, and can return to the lake in the natural environment.

  In addition, even if this bubble curtain is formed only in the water near the supply side or the discharge side of the water flow in the lake, water purification treatment with a coagulant sedimentation agent or Blyazoa is performed to improve environmental pollution. can do. Furthermore, in “closed water areas” such as rivers, inner bays and inland seas, there is little water exchange and sludge substances are likely to accumulate. Therefore, for example, if an underwater pump disposed in water is used in combination, the water flow can be circulated efficiently.

  According to invention of Claim 4, the water purification processing apparatus of Claim 1 is installed in the vicinity of the supply side and discharge side of a river. In other words, water purification treatment equipment is installed at an appropriate location on the upstream side of the river (near the supply side) and an appropriate location on the downstream side (near the discharge side) within the range where water quality is improved. Each bubble curtain is generated in the water on the side. As a result, the bottom within the range of the upstream supply side and the downstream discharge side of the river is cleaned by the precipitating agent mainly composed of the coagulating sedimentation agent or Blyazoa. Therefore, the fish returns to the contaminated river and can reproduce the natural state.

  In addition, even if this bubble curtain is formed only in the water near the supply side or the discharge side of the river water flow, the water purification process is performed with a coagulating sedimentation agent or Blyazoa to improve environmental pollution. can do.

  In addition, the use of a bridge can simplify the equipment. For example, if a pipe for supplying a coagulating sedimentation agent into water or a pipe for injecting air or water is fixed to a bridge girder, a water purification treatment device can be installed without producing new equipment. Therefore, it is possible to reduce the cost of equipment costs and improve environmental pollution due to water quality.

  According to the fifth aspect of the present invention, in an aquaculture farm (for example, an aquaculture farm near the seaside), the aquaculture product is usually surrounded by a frame of the net, and the flow changes depending on tides. Install water purification equipment upstream (near the supply side) and downstream (near the discharge side) of the tide flow. A bubble curtain is generated by spraying a coagulating sedimentation agent or a coagulating sedimentation agent mainly composed of Bryozoa in the water near the supply side and the discharge side where the water purification treatment apparatus is installed. The farm that was surrounded by the net frame is purified by the spread of the coagulating sedimentation agent or the coagulating sedimentation agent mainly composed of Briozoa, so that the aquacultured product is activated and a high quality culture product is produced. Produced.

  Even if this bubble curtain is formed only in the water near the supply side or the discharge side of the tide flow due to tides at the farm, water purification treatment with a coagulating sedimentation agent or Blyazoa is possible. Done and can improve environmental pollution.

  According to invention of Claim 6 or 8, a water purification processing apparatus is installed in the vicinity of the final treatment tank of a sewer, and a bubble curtain is formed in the water near the supply side or discharge side of a final treatment tank. In the final treatment tank of the sewage treatment tank, the activated sludge produced in the reaction tank, which is the pretreatment tank, is submerged. Therefore, the coagulation sedimentation agent released by the bubble curtain, especially the coagulation sedimentation agent mainly composed of Bliozoa, adsorbs suspended pollution. Therefore, the supernatant water can be purified in a short time, the processing time can be greatly shortened, and remarkable processing efficiency can be achieved. And it is disinfected and discharged into rivers.

  According to invention of Claim 7 or 8, while installing a water treatment apparatus in the vicinity of the water intake of a water purification plant, a bubble curtain is formed in the water near the inlet side of a water intake, or near an outlet.

  Normally, in a water purification plant, water taken from a water intake is passed into the water purification plant through the water intake and is sent to each household through a process of sedimenting turbidity and a filtration process. However, by making the coagulating sedimentation agent or the coagulating sedimentation agent mainly composed of Bryozoa into a bubble curtain at the intake port, the water flowing into the intake port is neutralized with sludge at the intake port. In particular, Blyazoa has a bactericidal effect and an effect of activating photosynthetic bacteria, greatly reducing the amount of chlorine used for disinfection and reducing the chlorine odor due to the deodorizing effect, improving the treatment efficiency of the water purification plant can do.

  According to the ninth aspect of the present invention, by forming the bubble curtain with nanobubbles, a large amount of bubbles can be generated without stopping the bubbles forming the bubble curtain. In addition, since nanobubbles can be formed in a bubble shape for a long period of time, the coagulating sedimentation agent can be spread in a pair of bubble curtains for a long period of time, and water purification can be performed effectively. In addition, as a means for forming nanobubbles, a conventional method or apparatus (for example, JP-A-2003-334548) can be used.

  Next, one form of the water treatment system by the Brysozoa of this invention is demonstrated based on drawing.

  As shown in FIG. 1, the water treatment system using Bryozoa according to the first embodiment is provided by installing water purification treatment devices 10 and 10 in the vicinity of the water supply side 3 and the discharge side 5 in the lake 1, respectively. Do.

  The water purification treatment apparatus 10 includes a coagulation sedimentation agent supply device 20 that supplies the coagulation sedimentation agent 7 mainly composed of Bryosore into water, and an air injection device 30 that injects air 8 to the supplied coagulation sedimentation agent 7. Configured. A supply pipe 21 connected to the coagulating sedimentation agent supply device 20 and a supply pipe 31 connected to an air injection device (for example, a compressor) 30 are connected to the ejector 13 as shown in FIG. After being mixed, each pipe 15 discharges into the water near the water supply side 3 and the water discharge side 5.

  The ejector 13 uses a general one. For example, as shown in FIG. 2, a drive flow (air) 8 supplied from a nozzle 132 disposed in the drive flow supply port 131 and a secondary flow are used. The mixing chamber 133 is formed to mix the secondary flow (aggregating sedimentation agent) 7 supplied from the supply port 134. The mixing chamber 133 is formed with a parallel portion 133a and a diffuser portion 133b that gradually increases in diameter from the parallel portion 133a, and the secondary pressure is generated by the negative pressure generated in the mixing chamber 133 by the ejection of the driving flow 8 and the viscosity of the driving flow 8. The flow 7 flows into the mixing chamber 133 together with the driving flow 8.

  As shown in Japanese Patent No. 30103246, the coagulating sedimentation agent 7 is pulverized by adjusting the moisture of the mined Bryozoa fossil at 100 ° C. in a drying furnace, and pulverizing it with a 1 mm mesh filter and vacuum. To form a powder. Then, an inorganic neutral flocculant is mixed and formed in a powder-processed Bryozoa fossil with a top particle size of 1 mm or less in accordance with the contamination state ratio (usually a ratio of about 9: 1).

  The coagulating sedimentation agent supply device 20 may be configured so that the powder of the coagulating sedimentation agent 7 can be quantitatively fed. For example, as shown in FIG. 3, as one form, a hopper 22 that fills the coagulating sedimentation agent 7, an auger screw 23 that passes through the hopper 22 and feeds the coagulating sedimentation agent 7, and one end of the auger screw 23. And a motor 24 that rotationally drives the auger screw 23. The output of the motor 24 is commanded by a control device (not shown) that constantly senses the flow velocity of the water flow, and adjusts the supply amount of the coagulating sedimentation agent 7. The auger screw 23 is formed with a spiral blade 25 on its outer peripheral surface, and the supply pipe 21 is connected to the tip of the auger screw 23. Then, by the rotation of the auger screw 23, the coagulating sedimentation agent 7 moved onto the spiral blade 25 reaches the secondary flow supply port 134 of the ejector 13, passes through the pipe 15, near the water flow supply side 3 and the discharge side 5. It is sent into the nearby water.

  The air injection device 30 may simply be installed with a compressor to supply air, or may be configured to inject using a vacuum pump. Furthermore, the microbubble generator Or you may make it supply the bubble produced | generated using the nano bubble generator described in Unexamined-Japanese-Patent No. 2003-334548. In either case, the ejector 13 is connected to the supply pipe 31 connected to the air injection device 30 and mixed with the coagulating sedimentation agent 7 supplied from the coagulating sedimentation agent supply device 20 and then ejected into the water.

  Of course, the supply pipe 21 connected from the coagulating sedimentation agent supply device 20 and the supply pipe 31 connected from the air injection device 30 are separately mixed in the vicinity of the water flow supply side 3 without being mixed by the ejector 13. A bubble curtain may be formed by piping near the discharge side 5.

  The nanobubble generator has a chamber for generating nanobubbles by electrolyzing water and acting on an ultrasonic generator, and a step of decomposing gasification by injecting distilled water and in the liquid It is comprised including the process of applying an ultrasonic wave. The nanobubbles generated in this manner become several tens of atmospheric pressure due to surface tension in water. When the bubbles collapse, several tens of atmospheric pressure air can be generated as a jet. It is also known that the surface of the bubbles is highly active, and bubbles of about 100 nm have a surface area that is tens of thousands of times larger than the bubbles of the order of several millimeters that are usually observed and have a high cleaning rate.

  By connecting the supply pipe 31 from this nanobubble generator and connecting it to the drive flow supply port 131 of the ejector 13, it is mixed with the coagulating sedimentation agent 7 and injected into the water.

  Next, the operation of the water treatment system configured as described above will be described.

  After the water purification treatment device 10 is installed in the vicinity of the water flow supply side 3 and the discharge side of the lake 1, the water purification treatment device 10 is operated. At this time, the speed of the water flow is detected by a control device (not shown), and the motor 24 of the coagulating sedimentation agent supply device 20 is appropriately rotated based on the detected flow velocity.

  The hopper 22 stores the coagulating sedimentation agent 7 mainly composed of Brysozoa, and the coagulation sedimentation agent 7 is directed toward the ejector 13 through the supply pipe 21 by the screw portion 25 of the auger screw 23 that is rotated by the drive of the motor 24. Are sent. This supply amount can be appropriately set by a control device (not shown) by detecting the speed of water flow.

  On the other hand, the air injection device (or nanobubble generation device) 30 injects air (or nanobubbles) toward the ejector 13. In the ejector 13, the coagulating sedimentation agent 7 and air (or nano bubbles) 8 are mixed in the mixing chamber 133 due to the generation of negative pressure, and the mixed water is passed through the pipe 15 in a mixed state to supply the water stream (lake 1). It is injected into the water near the side 3 or the discharge side 5.

  As shown in FIG. 2, the pipe 15 having one end connected to the ejector 13 is piped so as to face the bottom of the lake 1 and is disposed in the water with the other end facing upward. A large number of discharge holes 152 are formed in the extended portion 151 piped to the bottom of the lake 1 in the pipe 15, and the coagulating sedimentation agent 7 injected with air rises in the form of bubbles from the discharge holes 152 together with bubbles. . The ejected coagulating sedimentation agent 7 and air (or nanobubbles) 8 are bubbled and ejected from a large number of discharge holes 152 and rise from the bottom toward the water surface. By performing this continuously, the vicinity of the water supply side 3 and the vicinity of the discharge side 5 become bubble curtains. Any number of pipes 15 can be installed depending on the level of water flow in the lake 1.

  In a state where a bubble curtain is formed on the water supply side 3, a part of the water supply side 3 is blocked, and in a state where a bubble curtain is formed on the discharge side 5, a part of the water discharge side 5 is blocked. A large vessel is formed between the water supply side 3 and the water discharge side 5. Since the supply side 3 of the water flow is upstream and the discharge side 5 is downstream, the water flow continuously flows from the supply side 3 toward the discharge side 5 in the vessel.

  Therefore, the coagulating sedimentation agent 7 containing Bryazoa is agitated in the lake 1 formed as a vessel and settles at the bottom. The coagulating sedimentation agent 7 settled at the bottom accumulates on the sludge and sludge accumulated at the bottom, and adsorbs sludge heavy metals, cutting water or waste oil (hereinafter referred to as sludge) to neutralize ph. In other words, Blyazoa adsorbs and settles the floating nutrients and activates photosynthetic bacteria. Furthermore, the bactericidal effect kills anaerobic bacteria and activates the aerobic bacteria, thereby stopping the generation of methane gas. And oxygen is generated and sludge etc. are decomposed | disassembled and a malodor can be eliminated by the deodorizing effect. Therefore, sludge is changed into a substance with much less harm and can be separated from the sand, so that the water quality in the lake 1 is improved.

  Moreover, even if the water purification treatment apparatus 10 is installed only on either the supply side 3 vicinity or the discharge side 5 vicinity, the water quality can be improved on the flow side of the coagulating sedimentation agent 7.

  In small lakes, pollutants are likely to accumulate because there is little exchange of water. Therefore, you may make it produce a water flow artificially together with a submersible pump. Thereby, the water flow can be circulated efficiently.

  The water treatment system of the 2nd form is performed with respect to the water quality improvement of a river.

  In the second form, the water purification treatment apparatus 10 used in the first form is installed around the river. For example, as shown in FIGS. 4 to 6, the water purification treatment range is set between the first bridge 41 installed on the upstream side of the river 40 and the second bridge 42 installed on the downstream side. . The water purification treatment apparatuses 10 and 10 are installed near the first bridge 41 and the second bridge 42, respectively, and the pipes 15 and 15 extending from the water purification treatment apparatuses 10 and 10 are respectively connected using the bridge girder 43. A pipe is provided in the water under the first bridge 41 and the second bridge 42. In other words, if a part of the pipe 15 is fastened to the side or lower part of the bridge girder 43 and piped so as to reach the bottom of the river, the pipe 15 can be stably piped, and the entire water purification apparatus 10 Equipment reduction can be achieved.

  The action of discharging the coagulating sedimentation agent 7 from the water purification apparatus 10 through the pipe 15 into the water of the river to form a bubble curtain is the same as described in the first embodiment of the lake 1 and its description is omitted. To do.

  Even in this case, the control device (not shown) appropriately controls the rotation speed of the auger screw according to the flow of water, supplies an appropriate coagulating sedimentation agent, and supplies air (or nanobubble generator) from the air (or nanobubble generator). Nano bubbles) are jetted to form a bubble curtain as a mixed liquid. Then, the coagulating sedimentation agent is allowed to settle to the bottom, and the sludge is greatly changed to a small amount of outside substances.

  Even if the water purification treatment apparatus 10 is installed only in the vicinity of the first bridge 41 or the second bridge 42, the water quality can be improved on the flow side of the coagulating sedimentation agent 7.

  The water treatment system of the 3rd form is performed in the farm in an inner bay or an inland sea. In this embodiment, although not shown in the drawings, the cultured product to be cultivated is usually surrounded by a net frame, and the flow changes depending on the tides. Install water purification equipment upstream (near the supply side) and downstream (near the discharge side) of the tide flow. A coagulating sedimentation agent mainly composed of Brysozoa is sprayed into the water near the supply side and the discharge side where the water purification treatment apparatus is installed, and a bubble curtain is generated by the action described in the first embodiment. The aquaculture farm surrounded by the net frame is purified by the distribution of the coagulating sedimentation agent mainly composed of Blyazoa, so that the cultured culture is activated and a high quality cultured product is produced.

  Note that even if this bubble curtain is formed only in the water near the supply side or the discharge side of the tide flow due to tides at the farm, water purification treatment is performed by the Blyazoa. Contamination can be improved. Then, the flow of the tide is detected, and the control unit controls the supply amount of the coagulating sedimentation agent, the fluid ejection speed of the air ejection device, and the like.

  The water treatment system of the 4th form is applied to the sewage treatment plant 50, as shown in FIG. When the dirty water flows into the sewage treatment plant 50, first, the sand contained in the sewage is submerged in the sand basin 51, and large dust is removed with a screen. Next, fine dirt is first sunk in the sedimentation basin 52, and then, in the reaction tank 53, activated sludge containing microorganisms is added into the reaction tank 53 and air is blown into the reaction tank 53, whereby the microorganisms are contaminated. It propagates and absorbs as nutrients and is sent to the first sedimentation basin 52 of the final treatment tank as an activated sludge that tends to sink.

  The mass of activated sludge formed in the reaction tank 53 is submerged in the final sedimentation tank 54. At this time, the water purification treatment device 10 is installed in the vicinity of the final sedimentation basin 54, and the aggregate sedimentation agent 7 supplied from the water purification treatment device 10 is supplied to the final sedimentation basin 54 (or the discharge side). A bubble curtain is formed by being ejected from a pipe 15 provided at the bottom of the vicinity. The aggregate sedimentation agent 7 mainly composed of Bliozoa released by the bubble curtain adsorbs suspended contaminants and settles rapidly, so the supernatant water can be purified in a short time, and the treatment time can be greatly shortened. Efficiency can be improved. The water that has been clarified by being purified in the final sedimentation basin 54 is sterilized in the sterilization tank 55 and discharged from the discharge port 56 to the river 57.

  Accordingly, in the sewage treatment plant, even if the treatment facility is not added by adopting the present apparatus 10, the treatment capacity is improved without releasing the nutrient nutrients floating in the river, thereby reducing the treatment cost in the facility. be able to.

  The water treatment system of the 5th form is applied to the water purification plant 60, as shown in FIG.

  The water purification treatment apparatus 10 is installed in the vicinity of the water intake 61 of the water purification plant 60, and the pipe 15 extended from the water purification treatment apparatus 10 crawls the bottom in the water near the supply side of the water intake 61. It is piped. As described above, the coagulating sedimentation agent is ejected together with air from the discharge hole of the pipe 15 to form a bubble curtain.

  The water flowing from the river is neutralized with sludge at the water intake 61, and the purified water flows into the water intake 62. In the water intake site 62, the neutralized sludge and sand are removed, and the purified water flows into the water purification plant 60. In the water purification plant 60, the purified water is sent to each household through a chemical charging process, a chlorine injection process, a filtration process, and the like. Since Blyozoa contained in the coagulation sedimentation agent 7 has a bactericidal effect and an effect of activating photosynthetic bacteria, the amount of chlorine used for disinfection is greatly reduced, and the chlorine odor is reduced by the deodorizing effect. 60 processing efficiency can be improved.

  As described above, the water purification treatment system 10 of the embodiment distributes the coagulating sedimentation agent 7 containing Bryozoa throughout the bubble curtain formed in the upstream part and the downstream part of the water flow, and at the bottom part. By letting it settle, the sludge such as heavy metal, cutting oil, or factory waste oil in the sludge accumulated at the bottom is adsorbed. As a result, the sludge can be neutralized by ph, so that the sludge accumulated at the bottom is greatly changed to a small amount of outside substances. Therefore, water quality can be improved efficiently.

  Moreover, since the means for forming the bubble curtain is provided with the coagulating sedimentation agent supply device 20 and the air injection device (or nano bubble generation device) 30, and after mixing with the ejector 13, it is injected into water. The installation space can be reduced without the need for a simple device, and the equipment cost can be reduced.

  In addition, it is possible to maintain the bubble curtain to be formed over a long period of time by generating nanobubbles with a nanobubble generator and mixing it with a coagulating sedimentation agent, and also cleaning the nanobubbles themselves to help improve water quality. it can.

  In addition, the above-mentioned water treatment system can be applied to all the places other than the above-described forms where a water flow exists.

  Further, in the water treatment system of the above-described form, the coagulating sedimentation agent 7 is mainly composed of Bliozoa. However, only a well-known coagulation sedimentation agent containing no Bliozoa can be bubbled in water. Therefore, water quality can be improved.

It is a simplification figure showing the installation state of the water purification device by one form of the present invention. It is a simplification figure showing the state where the bubble curtain was formed near the supply side or discharge side of a water flow. It is sectional drawing which shows one form of a coagulation sedimentation agent supply apparatus. It is a simplified diagram which shows the state which installed the water purification apparatus of this invention in the bridge vicinity which resembles a river. FIG. 5 is a simplified diagram showing a state where pipes are piped on the bridge girder in FIG. 4. FIG. 6 is an enlarged view showing a part of the details in FIG. 5. It is a simplification figure showing the state where the water treatment equipment of the present invention was installed in the sewage treatment plant. It is a simplification figure showing the state where the water treatment equipment of the present invention was installed in the water purification plant. It is a simplified diagram showing a conventional water purification system.

Explanation of symbols

1, lake 3, supply side 5, discharge side 7, coagulating sedimentation agent 8, air (or nanobubbles)
DESCRIPTION OF SYMBOLS 10, Water purification processing device 13, Ejector 15, Pipe 151, Extension part 152, Discharge hole 20, Coagulation sedimentation agent supply device 21, Supply pipe 30, Air injection device (nano bubble generator)
31, supply pipe 40, river 41, first bridge 42, second bridge 43, bridge girder 50, sewage treatment plant 54, final sedimentation tank (final treatment tank)
60, water purification plant 61, water intake

Claims (9)

  A water purification treatment device having a coagulating sedimentation agent supply device for supplying a coagulating sedimentation agent and a fluid ejection device for ejecting a fluid into the water is provided near the water supply side and the discharge side or near the supply side or discharge. Near the supply side and the discharge side of the water flow, or the supply side by injecting the fluid from the fluid injection device to the coagulation sedimentation agent supplied from the coagulation sedimentation agent supply device A water treatment system, wherein a bubble curtain is formed in the water near or on the discharge side.   The water treatment system according to claim 1, wherein the coagulating sedimentation agent includes a powder-processed Bryozoa.   3. The water treatment system according to claim 1, wherein the water purification treatment apparatus is provided near a supply side and a discharge side, a supply side, or a discharge side of a water flow in a lake. 3.   The water purification treatment device is provided near the supply side and discharge side of the river water flow, near the supply side or near the discharge side, and a part of the water purification treatment device is fixed to the bridge girder. The water treatment system according to claim 1 or 2.   The said water purification processing apparatus is provided in the supply side vicinity of the water flow with respect to the tides in a farm, and the discharge side vicinity, the supply side vicinity, or the discharge side vicinity. Water treatment system.   A water purification treatment device having a coagulation sedimentation agent supply device for supplying the coagulation sedimentation agent and a fluid ejection device for ejecting a fluid into the water is provided near the supply side or the discharge side of the final treatment tank in the sewage treatment plant. A bubble is formed in the water near the supply side or the discharge side in the final treatment tank by injecting the fluid from the fluid injection device to the coagulation sedimentation agent supplied from the aggregation sedimentation agent supply device. A water treatment system characterized by forming a curtain.   A water purification treatment device having a coagulation sedimentation agent supply device for supplying the coagulation sedimentation agent and a fluid ejection device for ejecting a fluid into the water is provided near the supply side or the discharge side of the water intake of the water purification plant, A bubble curtain is formed in the water near the supply side or the discharge side of the intake port by injecting the fluid from the fluid injection device to the aggregation sedimentation agent supplied from the aggregation sedimentation agent supply device. A water treatment system characterized by that.   The water treatment system according to claim 6 or 7, wherein the coagulating sedimentation agent contains a powder processed Bryozoa.   The water treatment system according to claim 1, wherein the fluid ejecting apparatus is configured to be able to form nanobubbles.

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