CN210340446U - Coagulating sedimentation device - Google Patents
Coagulating sedimentation device Download PDFInfo
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- CN210340446U CN210340446U CN201921140668.0U CN201921140668U CN210340446U CN 210340446 U CN210340446 U CN 210340446U CN 201921140668 U CN201921140668 U CN 201921140668U CN 210340446 U CN210340446 U CN 210340446U
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Abstract
The utility model discloses a coagulating sedimentation device, which comprises a reaction area and a sedimentation area; the reaction zone comprises a square water tank with four lattices, wherein one lattice is a coagulation reaction zone, the other lattice is a flocculation reaction zone, and the coagulation reaction zone, the flocculation reaction zone and the precipitation zone are connected through water holes; a coagulant adding metering pump, a stirrer and a flocculating agent adding metering pump are arranged in the reaction zone, a sludge hopper is arranged below the sedimentation zone, an inclined tube zone is fixedly arranged above the sedimentation zone, a baffle is arranged on one side of the inclined tube zone, and an overflow weir is arranged at the top of the inclined tube zone; the pipe chute is under being close to the vertical fixed baffle that sets up in one side in water hole, the baffle upper end extends to the sedimentation zone upper surface, and the lower extreme extends to the pipe chute under control surface. The utility model can realize the accurate control of the adding amount by adding the coagulant and the flocculating agent by the metering pump; the utility model discloses a coagulating sedimentation device, compact structure, area is little.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a coagulating sedimentation device.
Background
The coagulation method is based on the principle that coagulant is added into waste water, and as the coagulant is electrolyte, micelle is formed in the waste water and is electrically neutralized with colloid substances in the waste water to form fluff grains for settlement. The coagulating sedimentation can not only remove the particle size of 10 in the wastewater-3～10-6mm fine suspended particles, and can remove rich nutrients such as chromaticity, oil, microorganisms, nitrogen and phosphorus, heavy metals, organic matters, etc.
Before the coagulant is added into the wastewater, the colloid and fine suspended particles in the wastewater have light mass and are collided by the molecular thermal motion of water to make irregular brownian motion. The particles all carry like charges, and electrostatic repulsion among the particles prevents the particles from approaching each other and polymerizing into larger particles; secondly, the charged colloidal particles and counter ions can be hydrated with the surrounding water molecules to form a hydrated shell which can hinder the polymerization of each colloid. The more charged the colloidal particles of a colloid, the greater its potential; the more counterions in the diffusion layer, the greater the hydration, and the thicker the hydration layer, and thus the thicker the diffusion layer, the greater the stability.
In recent years, with the progress of society, the living standard of people is improved, and the pollution of water resources is increasingly serious. In order to reduce the pollution of water resources, people pay more and more attention to sewage treatment. In order to better improve the water quality, large-particle solid impurities are separated, and a coagulant is added to treat tiny suspended matters and colloids in raw water; and with the continuous improvement of treatment standards, the requirement for removing SS in sewage is higher and higher. At present, the existing coagulating sedimentation tank has the problems of large occupied area and low treatment efficiency due to the fact that the structure is too simple.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned defect among the prior art, the utility model discloses a coagulating sedimentation device is provided.
The technical scheme of the utility model as follows:
a coagulating sedimentation device, which comprises a reaction zone and a sedimentation zone; the reaction zone consists of a plurality of water tanks, wherein one water tank is a coagulation reaction zone, the rest water tanks are flocculation reaction zones, and the coagulation reaction zone, the flocculation reaction zones and the sedimentation zones are communicated through water holes; a water inlet, a coagulant adding metering pump and a first stirrer are arranged in a water tank of the coagulation reaction zone; a flocculating agent feeding metering pump and a second stirrer are arranged in a water tank of the flocculation reaction zone, a sludge hopper is arranged below the sedimentation zone, an inclined tube zone is fixedly arranged above the sedimentation zone, and an overflow weir is arranged at the top of the inclined tube zone; the pipe chute is under being close to the vertical fixed baffle that sets up in one side in water hole, the baffle upper end extends to the sedimentation zone upper surface, and the lower extreme extends to the pipe chute under control surface. Sewage is followed the water inlet is intake, the coagulant is thrown the dosing pump to throw the coagulant in the coagulation reaction district, the flocculant is thrown the dosing pump to throw the flocculating agent in the flocculation reaction district, the mixer is used for stirring, mixes, and the sewage passes through the water hole realization baffling in coagulation reaction district, the flocculation reaction district and finally gets into the settling zone gets into the sewage warp of settling zone the baffle dams, follows the baffle below gets into the pipe chute district, and mud sinks to discharge through the mud pipe behind the sludge bucket, and sewage after the purification is followed overflow weir discharges.
Preferably, the first stirrer is a fast stirrer, and the second stirrer is a slow stirrer. The rotating speed of the first stirrer is greater than that of the second stirrer, and the stirrer in the coagulation reaction zone rapidly stirs to realize rapid and uniform mixing of a coagulant and sewage; after the reaction is completed in the coagulation reaction zone, sewage forms fine alum floc, but the sewage does not reach the natural precipitation granularity, and after the flocculating agent is added, the water conservancy condition for ensuring that particles obtain proper collision contact and are not broken is required, so that a slow stirrer is arranged to complete the flocculation reaction.
Preferably, the device comprises a rectangular area, the middle of the rectangular area is divided into two square areas by a partition wall, namely the reaction area and the precipitation area; the reaction zone is divided into four-grid square water pools by two cross-shaped partition walls; one of the lattices is a coagulation reaction area, the flocculation reaction area comprises a first flocculation reaction area, a second flocculation reaction area and a third flocculation reaction area, and the coagulation reaction area, the first flocculation reaction area, the second flocculation reaction area and the third flocculation reaction area are arranged in a clockwise or anticlockwise direction. The arrangement makes the whole structure of the coagulating sedimentation device compact and occupies small area.
Preferably, the first flocculation reaction zone is provided with a flocculating agent feeding metering pump and a second stirrer. The first flocculation reaction zone realizes the sufficient contact of the medicament and the sewage so as to form a string of flocs (alum blossom), and the second flocculation reaction zone and the third flocculation reaction zone are further fused with large coalescent flocs (large alum blossom).
Preferably, the coagulation reaction zone, the first flocculation reaction zone, the second flocculation reaction zone and the third flocculation reaction zone are provided with water through holes, and sewage enters the precipitation zone from the water through holes of the third flocculation reaction zone; the water holes are arranged in a staggered manner. The water holes realize the baffling of the sewage, prolong the water flow path of the sewage in the reaction tank, increase the volume utilization rate of the reaction area and ensure that the reaction is more sufficient.
Preferably, the single-cell tank capacity of the flocculation reaction zone is equal to that of the coagulation reaction zone, so that the chemicals and the sewage are fully mixed.
Preferably, two sludge hoppers are arranged below the settling zone, a sludge discharge pipe is arranged at the bottom of each sludge hopper, the sludge discharge pipe is connected with a sludge pump, and settled sludge is discharged through the sludge pump.
Preferably, the overflow weir at the top of the inclined tube area is a triangular overflow weir, and the treated clean sewage is collected to the water outlet pipe through the triangular overflow weir and is discharged.
Compared with the prior art, the beneficial effects of the utility model are as follows:
firstly, in the coagulating sedimentation device of the utility model, a metering pump adds coagulant into the coagulating reaction zone, another metering pump adds flocculant into the coagulating reaction zone, and the dosing of the medicament is respectively completed by the metering pump, so that the accurate control of the dosing amount of the medicament can be realized; secondly, the rapid mixer in the coagulation area and the slow mixer in the flocculation area can fully mix the medicament and the sewage, ensure the integrity of alum floc and improve the precipitation effect.
Secondly, the reaction zone of the coagulating sedimentation device of the utility model is a region shaped like a Chinese character 'tian', sewage flows clockwise or anticlockwise in the reaction zone and enters the sedimentation zone from the last flocculation reaction zone; the water passing holes on the partition walls of the coagulation reaction zone and the flocculation reaction zone are arranged in a staggered manner, so that the baffling of sewage is better realized, the water flow path of the sewage in the reaction tank is prolonged, the volume utilization rate of the reaction zone is increased, and the reaction is more sufficient; compact structure, small occupied area, good sedimentation effect and high treatment efficiency.
Thirdly, the coagulation sedimentation device of the utility model has three flocculation reaction areas, the first flocculation reaction area is stirred to realize the full combination of the reagent and the sewage to form alum blossom, and the reagent is further combined with the sewage through the second flocculation reaction area and the third flocculation reaction area to form large alum blossom through flocculation; the sewage after the full reaction enters the settling zone, fully settles in the settling zone, finally the sediment in the settling tank is collected by a perforated mud pipe and is discharged by a sludge pump, and the clear water generated after the sedimentation is discharged by a water outlet pipe through a triangular overflow weir.
Fourthly, one side of the inclined pipe area of the coagulating sedimentation device is fixedly provided with a baffle plate to realize the interception of the sewage, and the sewage is prevented from directly entering the inclined pipe area from the reaction area; the sewage that gets into the settling zone gets into the pipe chute district from the baffle below, and mud sinks into the sludge bucket, and sewage flows out from the overflow weir of pipe chute district top, and it is effectual to deposit.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
FIG. 1 is a plan view of a coagulating sedimentation device according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a settling zone in an embodiment of the invention.
Reference numerals: a reaction zone I; a sedimentation zone II; 1.1 of a coagulation reaction zone; a flocculation reaction zone 2; a first flocculation reaction zone 2.1; a second flocculation reaction zone 2.2; a third flocculation reaction zone 2.3; a water inlet 4; adding a coagulant into a metering pump 5; a stirrer 6; adding a flocculating agent into a metering pump 7; a stirrer 8; a beveled region 9; an overflow weir 10; a sludge pump 11.1; a water outlet pipe 12; a sludge discharge pipe 13; a baffle 14; water passing holes 15; a partition wall 16; a partition wall 17; water passing holes 171; a partition wall 18; water passing holes 181; a partition wall 19; water passing holes 191; partition 20 sludge hopper 21.
Detailed Description
The utility model provides a coagulating sedimentation device, which comprises a rectangular area, wherein the middle of the rectangular area is divided into two square areas, namely a reaction area and a sedimentation area, by a partition wall; the reaction zone is divided into four-grid square water pools by two cross-shaped partition walls, wherein one grid is a coagulation reaction zone, the other grid is a flocculation reaction zone, and the coagulation reaction zone, the flocculation reaction zone and the precipitation zone are connected through water passing holes; the coagulation reaction zone is provided with a water inlet, a coagulant adding metering pump and a rapid stirrer; the flocculation reaction zone is provided with a flocculating agent feeding metering pump and a slow stirrer, a sludge hopper is arranged below the sedimentation zone, an inclined tube zone is fixed above the sedimentation zone, and the top of the inclined tube zone is provided with an overflow weir; sewage enters from the water inlet, a coagulant is added into the coagulation reaction zone by the coagulant adding and metering pump, a flocculant is added into the flocculation reaction zone by the flocculant adding and metering pump, and the stirrer is used for stirring and mixing; sewage passes through cross the mouth of a river and realize baffling and finally get into the settling zone, pipe chute district one side is fixed sets up the baffle, and the sewage that gets into the settling zone warp the baffle dams, follows the baffle below gets into the pipe chute district, and mud sinks to discharge through the mud pipe behind the sludge bucket, and sewage after the purification is followed the overflow weir is discharged.
The utility model discloses a deposit the principle:
after the coagulant is added into the waste water in the coagulation reaction zone, the coagulant is generally aluminum salt or iron salt, such as polyaluminium chloride, ferrous sulfate, ferric chloride or aluminum sulfate, and the colloid is reduced or eliminated by the potential, so that the stable state of the particles is destroyed (called destabilization). The process of agglomeration of destabilized particles into larger particles is called agglomeration, thereby forming small alum flocs visible to the naked eye. In the process, a mixing facility is needed to enable water flow to generate violent turbulence after the medicament is added, so that the medicament can be rapidly and uniformly diffused into the whole water body, and a rapid stirrer is usually needed. Adding a flocculating agent into the flocculation reaction zone, adsorbing colloid and suspended particles, and forming a string of serial flocs (alum flowers) by a bridge frame under the action of electrostatic force, van der waals force, hydrogen bond force and the like to fuse and coalesce large flocs (alum flowers), so that the water-soluble chain-shaped high polymer flocculating agent can be precipitated in the precipitation zone. After the reaction is completed in the coagulation reaction zone, sewage forms fine alum floc, but the sewage does not reach the natural precipitation granularity, and after the flocculating agent is added, the water conservancy condition for ensuring that particles obtain proper collision contact and are not broken is required, so that a slow stirrer is arranged to complete the flocculation reaction.
Aiming at the water quality characteristics of different sewage, the dosing amount and the stirring speed are different, the optimal dosing amount and the optimal rotating speed need to be determined through a small-scale experiment, and then the optimal coagulating sedimentation effect of the sewage is realized by adjusting the flow of a dosing metering pump and the rotating speed of a stirrer in a coagulating sedimentation device.
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. In practical applications, the improvement and adjustment made by those skilled in the art according to the present invention still belong to the protection scope of the present invention.
Example 1
As shown in FIGS. 1 and 2, a coagulating sedimentation device comprises a rectangular area which is divided into two square areas, namely a reaction area I and a sedimentation area II, by a partition wall 20 in the middle. The reaction zone I is divided into four water pools with square planes by two cross-shaped partition walls, the first water pool is a coagulation reaction zone 1.1, the other three water pools are flocculation reaction zones 2, and the flocculation reaction zones 2 are respectively a first flocculation reaction zone 2.1, a second flocculation reaction zone 2.2 and a third flocculation reaction zone 2.3 in the anticlockwise direction. Sewage enters from a water inlet 4 of the coagulation reaction zone 1.1, coagulant is added into the coagulation reaction zone 1.1 through a coagulant adding metering pump 5, and the chemicals and the sewage are quickly and uniformly mixed through a stirrer 6. And a flocculating agent feeding metering pump 7 feeds a flocculating agent into the first flocculation reaction zone 2.1, and a stirrer 8 is arranged in the first flocculation reaction zone 2.1, so that the sewage and the medicament are completely mixed. The partition wall 16 between the coagulation reaction zone 1.1 and the first flocculation reaction zone 2.1 is provided with water through holes 15, the partition wall 17 between the first flocculation reaction zone 2.1 and the second flocculation reaction zone 2.2 is provided with water through holes 171, the partition wall 18 between the second flocculation reaction zone 2.2 and the third flocculation reaction zone 2.3 is provided with water through holes 181, and the partition wall 19 between the third flocculation reaction zone 2.3 and the settling zone is provided with water through holes 191.
The sewage is baffled through the water passing holes 15, 171, 181 and 191 and finally enters the sedimentation area II for sedimentation. The lower part of the settling zone II is provided with two sludge hoppers 21, the sludge hoppers 21 are inverted trapezoidal, alum blossom deposits in the region, the bottom of each sludge hopper is provided with a sludge discharge pipe 13, the sludge discharge pipes 13 are connected with a sludge pump 11.1, the sludge deposited by the sludge pump 11.1 is discharged, an inclined tube zone 9 is fixedly arranged on the wall of the settling zone II, and the inclined tube zone 9 is fixedly formed by a plurality of inclined tubes. The inclined tube area 9 is provided with a baffle plate 14 at one side close to the partition wall 20, and the baffle plate 14 is vertically fixed; the upper end of the baffle plate 14 is flush with the upper surface of the settling zone II, and the lower end of the baffle plate crosses the lower surface of the inclined tube zone 9 to prevent sewage from directly entering the inclined tube zone 9. Sewage gets into the sedimentation zone from water hole 191, gets into the sludge bucket earlier down and deposits and then get into pipe chute district 9, and the pipe chute district can increase the area of deposiing, makes remaining alum blossom get rid of, and pipe chute district top is an overflow weir 10, and the sewage of handling totally collects to outlet pipe 12 through overflow weir 10 and discharges. The inclined tube zone 9 may be fixed to any wall of the settling zone II other than the partition wall 20.
First check pond of reaction zone I is coagulation reaction zone 1.1, the mixer 5 of coagulation reaction zone 1.1 is rapid mixer, realizes quick, the homogeneous mixing of medicament and sewage through rapid mixer. The back three lattices of the reaction area I are flocculation reaction areas 2, and the single lattice pool capacity of the flocculation reaction areas is equal to the pool capacity of the coagulation reaction areas. The stirrer 8 arranged in the flocculation reaction zone 2.1 is a slow stirrer, so that the completeness of alum blossom is ensured while the sewage and the medicament are completely mixed.
The sludge discharge pipes 13 of the two sludge hoppers 21 in the settling zone II are perforated sludge discharge pipes. The overflow weir 10 at the top of the inclined pipe area is a triangular overflow weir, and the treated clean sewage is collected to the water outlet pipe 12 through the triangular overflow weir and is discharged. The utility model discloses a reaction zone pond holds, the outer fringe linear velocity of settling zone load and mixer is not used for the restriction the utility model discloses a protection scope should design suitable parameter in order to satisfy the waste water treatment demand according to concrete operating mode.
Preferably, the water passing hole 15, the water passing hole 171, the water passing hole 181 and the water passing hole 191 are arranged in a staggered manner, so that sewage baffling is realized better.
The reaction zone is a square pool in the square grid in the embodiment, and in other embodiments, the flocculation reaction zone can be arranged in other numbers. According to the specific working condition.
The above disclosure is only illustrative of the preferred embodiments of the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A coagulating sedimentation device, which is characterized by comprising a reaction zone and a sedimentation zone; the reaction zone consists of a plurality of water tanks, wherein one water tank is a coagulation reaction zone, the rest water tanks are flocculation reaction zones, and the coagulation reaction zone, the flocculation reaction zones and the sedimentation zones are communicated through water holes; a water inlet, a coagulant adding metering pump and a first stirrer are arranged in a water tank of the coagulation reaction zone; a flocculating agent feeding metering pump and a second stirrer are arranged in a water tank of the flocculation reaction zone, a sludge hopper is arranged below the sedimentation zone, an inclined tube zone is fixedly arranged above the sedimentation zone, and an overflow weir is arranged at the top of the inclined tube zone; the pipe area under the pipe is being close to the vertical fixed baffle that sets up in one side of crossing the water hole, the baffle upper end extends to the settling zone upper surface, and the lower extreme extends to the pipe area under the pipe, and sewage gets into the settling zone, and mud sinks to discharge through the mud pipe behind the sludge bucket, and sewage after the purification is followed the overflow weir discharges.
2. The coagulating sedimentation device according to claim 1, wherein the first stirrer is a fast stirrer and the second stirrer is a slow stirrer.
3. The coagulating sedimentation device according to claim 1, wherein the coagulating sedimentation device is a rectangular area divided into two square areas, namely the reaction area and the sedimentation area, by a partition wall in the middle of the rectangular area; the reaction zone is divided into four-grid square water pools by two cross-shaped partition walls; one of the lattices is a coagulation reaction area, the flocculation reaction area comprises a first flocculation reaction area, a second flocculation reaction area and a third flocculation reaction area, and the coagulation reaction area, the first flocculation reaction area, the second flocculation reaction area and the third flocculation reaction area are arranged in a clockwise or anticlockwise direction.
4. The coagulating sedimentation device according to claim 3, wherein the first flocculation reaction zone is provided with a flocculating agent dosing metering pump and a second stirrer.
5. The coagulating sedimentation device according to claim 3, wherein the coagulating reaction zone, the first flocculation reaction zone, the second flocculation reaction zone and the third flocculation reaction zone are provided with water through holes, and sewage enters the sedimentation zone from the water through holes of the third flocculation reaction zone; the water holes are arranged in a staggered manner.
6. The coagulating sedimentation device according to claim 3, wherein the flocculation reaction zone cell volume is equal to the coagulation reaction zone cell volume.
7. The coagulating sedimentation device according to claim 1, wherein two sludge hoppers are arranged below the sedimentation zone, a sludge discharge pipe is arranged at the bottom of each sludge hopper, the sludge discharge pipe is connected with a sludge pump, and the precipitated sludge is discharged through the sludge pump.
8. The coagulating sedimentation device according to claim 1, wherein the overflow weir at the top of the inclined pipe section is a triangular overflow weir, and the treated clean sewage is discharged through the triangular overflow weir.
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| CN201921140668.0U CN210340446U (en) | 2019-07-19 | 2019-07-19 | Coagulating sedimentation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921140668.0U CN210340446U (en) | 2019-07-19 | 2019-07-19 | Coagulating sedimentation device |
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| CN210340446U true CN210340446U (en) | 2020-04-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995187A (en) * | 2020-08-25 | 2020-11-27 | 上海吾励环境技术有限公司 | Acrylonitrile wastewater treatment method |
| CN114684950A (en) * | 2020-12-31 | 2022-07-01 | 江苏艾特克环境工程设计研究院有限公司 | Integrated treatment device and method for slag yard leachate |
-
2019
- 2019-07-19 CN CN201921140668.0U patent/CN210340446U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995187A (en) * | 2020-08-25 | 2020-11-27 | 上海吾励环境技术有限公司 | Acrylonitrile wastewater treatment method |
| CN114684950A (en) * | 2020-12-31 | 2022-07-01 | 江苏艾特克环境工程设计研究院有限公司 | Integrated treatment device and method for slag yard leachate |
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