CN113968609B - Self-adaptive weighting sludge clarifier - Google Patents

Abstract

The invention relates to the technical field of water treatment equipment, and provides a self-adaptive aggravated sludge clarifier, which comprises: the water collecting pipe is used for collecting water in the coagulation area; the flocculation area is arranged at the downstream of the coagulation area, and the other end of the water collecting pipe enters the flocculation area; the water body accelerating device is respectively arranged in the coagulation area and the flocculation area; the connecting end of the mud scraper is arranged outside the tank body of the self-adaptive weighting mud clarifying tank, and the action end of the mud scraper stretches into the bottom of the sedimentation zone and is suitable for cleaning mud deposited at the bottom of the sedimentation zone. This self-adaptation aggravates mud clarifier relies on the kinetic energy of water self to stir, need not to set up the agitator in coagulation zone and flocculation zone, has reduced the electric load of whole self-adaptation aggravates mud clarifier, is favorable to reducing running cost, moreover, the mud scraper that sets up in the sedimentation zone can prevent the floc deposit in the bottom of sedimentation zone, makes the floc participate in purification process again, is favorable to improving water purification efficiency.

Description

Self-adaptive weighting sludge clarifier

Technical Field

The invention relates to the technical field of water treatment equipment, in particular to a self-adaptive aggravated sludge clarifier.

Background

The coagulating sedimentation treatment technology is an important technology in the current water treatment technology, can reduce the sensory index of the water quality such as turbidity, chromaticity and the like of raw water, can remove various toxic and harmful pollutants, is an important guarantee for the reliable operation of a subsequent advanced treatment system, and has wide application in aspects such as drinking water treatment, sewage and wastewater treatment, high COD and high salt water treatment and the like. In the traditional coagulating sedimentation technology, the medicament and water are fully mixed by multistage stirring in the front section, and then sedimentation and filtration in the rear section are carried out.

The reactor taking sludge as a carrier in the related art mainly comprises a coagulation area, a flocculation area and a precipitation separation area, wherein the water body is directly discharged after coagulation, flocculation and precipitation treatment. When the device is used, a large amount of sludge is deposited at the bottom of the sedimentation zone, and compared with suspended sludge, the deposited sludge has low utilization rate, so that the water purification efficiency is reduced.

Disclosure of Invention

Therefore, the invention aims to overcome the defects of low sludge utilization rate and low water purification efficiency caused by a large amount of sludge deposited at the bottom of a sedimentation zone when the reactor in the related art is used, thereby providing the self-adaptive aggravated sludge clarifier.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the invention provides a self-adaptive aggravated sludge clarifier, which comprises: the coagulation zone is provided with a reactor water inlet; one end of the water collecting pipe is arranged in the coagulation area and used for collecting water bodies in the coagulation area; the flocculation area is arranged at the downstream of the coagulation area, and the other end of the water collecting pipe enters the flocculation area; the water accelerating device is respectively arranged in the coagulation area and the flocculation area and comprises: a nozzle adapted to be connected to a water inlet of the reactor or the other end of the water collecting pipe, at least a portion of an inner diameter of the nozzle being reduced in a flow direction of the water body; the throat comprises a throat water inlet and a throat water outlet, the throat water inlet mask is arranged above the spray pipe, and an acceleration water channel is formed between the spray pipe and the throat; the sedimentation zone is arranged at the downstream of the flocculation zone, and a reactor water outlet is arranged on the sedimentation zone; the mud scraper, the link of mud scraper sets up the jar body outside of self-adaptation aggravates mud clarifier, the action end of mud scraper stretches into the bottom of sedimentation zone is suitable for the clearance the mud of sedimentation zone's bottom deposit.

Further, the mud scraper comprises a motor, a connecting shaft and a mud scraper; the motor is arranged outside the tank body of the self-adaptive weighting sludge clarification tank, an output shaft of the motor is connected with one end of the connecting shaft, the other end of the connecting shaft is connected with the scraping plate, and the scraping plate is arranged in parallel with the bottom of the sedimentation zone.

Further, the bottom of the sedimentation zone is recessed inwards to form a sludge bucket which is suitable for containing sludge collected by the mud scraping plate, and the sludge bucket is connected with the water body accelerating device in the flocculation zone through a low-density floc circulating device.

Further, a flocculation passing area is arranged between the flocculation area and the sedimentation area, water enters the sedimentation area through the flocculation passing area, at least one high-density flocculation collecting bucket is arranged in the sedimentation area, and part of water enters the high-density flocculation collecting bucket; and one end of the at least one floc circulating device acts in the high-density floc collecting hopper, and the other end of the at least one floc circulating device is connected with the spray pipe of the at least one water body accelerating device.

Further, at least a portion of the lance is tapered along the flow direction of the body of water.

Further, at least a part of the area of the throat pipe corresponding to the spray pipe is arranged in a conical shape.

Further, the self-adaptive weighting sludge clarifier further comprises a flocculation sludge suspension area which is arranged at the downstream of the high-density floc collecting hopper, and a floc gathering area is arranged between the flocculation sludge suspension area and the high-density floc collecting hopper.

Further, the self-adaptive weighted sludge clarifier further comprises a low-density floc concentration chamber arranged at the downstream of the flocculated sludge suspension zone.

Further, the self-adaptive weighting sludge clarifier further comprises an inclined plate separation tube group which is arranged above the flocculation sludge suspension area and the low-density floc concentration chamber, and the inclined plate separation tube group comprises a plurality of inclined guide plates.

Further, the self-adaptive weighted sludge clarifier further comprises a clear water collecting device which is arranged above the inclined plate separation pipe group and is connected with the water outlet of the reactor.

The technical scheme of the invention has the following advantages:

1. the self-adaptive weighting sludge clarifier provided by the invention is characterized in that a water body accelerating device is respectively arranged in a coagulation area and a flocculation area, the water body accelerating device is provided with a spray pipe and a throat, and a water inlet mask of the throat is arranged above the spray pipe to form an accelerating water channel. After entering the spray pipe from the water inlet of the reactor, the inner diameter of the spray pipe is reduced at least partially, so that the water body can be accelerated after flowing out of the spray pipe and then passes through an acceleration water channel, and the water body is sprayed out from the top opening of the throat pipe and is dispersed to the periphery. Under the action of gravity, the water body falls down, under the action of low pressure, the water body enters an acceleration water channel through the interval between the throat pipe and the spray pipe, and the water body and the medicines in the coagulation area are stirred in a hydraulic circulation mode. One end of the water collecting pipe is arranged in the coagulation area, the other end of the water collecting pipe is communicated with the spray pipe in the flocculation area, the spray pipe arranged in the flocculation area and the venturi are used for stirring water and medicines in the flocculation area in the same hydraulic circulation mode, and the stirred water can flow into a downstream sedimentation area for subsequent purification. In the whole process, the stirring is carried out by depending on the kinetic energy of the water body, the stirrer is not required to be arranged in the coagulation area and the flocculation area, the power load of the whole self-adaptive weighting sludge clarifier is reduced, the running cost is reduced, and meanwhile, the self-adaptive weighting sludge clarifier is reduced in the whole maintenance burden because the stirrer is not required to be maintained or replaced. In addition, the mud scraper arranged in the sedimentation area can prevent the flocs from being deposited at the bottom of the sedimentation area, so that the flocs are participated in the purification process again, and the water purification efficiency is improved.

2. According to the self-adaptive weighting sludge clarifier provided by the invention, the bottom of the sedimentation area is inwards recessed to form the sludge hopper, the sludge scraper collects deposited sludge into the sludge hopper, and the flocs are returned to the flocculation area again through the low-density floc circulation device to participate in mixing and stirring, so that the utilization efficiency of the flocs is improved.

3. According to the self-adaptive weighting sludge clarifier provided by the invention, the raw water, the medicament and the high-density flocs in the high-density flocs collecting hopper are mixed by arranging the flocs circulating device. The adsorption capacity of the flocs can effectively adsorb suspended matters and partial colloid matters in the water body. In addition, the residual medicament in the reflux floc reacts again, and under the combined action of the reflux floc and the reflux floc, the use amount of the medicament is greatly reduced, the effective rate of the medicament is improved, the chemical medicament residue in the discharged water body is greatly reduced, and the environmental pollution is reduced.

4. According to the self-adaptive weighting sludge clarifier provided by the invention, at least one part of the spray pipe is arranged in a conical manner along the flowing direction of the water body, so that the water body flowing through the self-adaptive weighting sludge clarifier can be accelerated, and the accelerated water body has larger kinetic energy, thereby being beneficial to improving the stirring effect.

5. The self-adaptive weighting sludge clarifier provided by the invention has the advantages that after water flow hits the side wall of the low-density floc concentration chamber, the water flow climbs, the flocs are continuously increased in the climbing process, meanwhile, the low-density floc circulation device in the flocculation sludge suspension area pumps out the flocs, the water body in the area has a descending trend under the action of low pressure, the two forces up and down reach the balanced point position to form a dynamic suspension floc layer, which is called a floc filter bed area, the filtering and adsorbing effects are realized, the smaller flocs are further increased, the larger flocs can be settled to the bottom of the flocculation sludge suspension area, and the flocculation sludge suspension area is returned to the upstream coagulation area for recycling through the low-density floc circulation device. And (5) sieving residual sludge flocs with particle diameters, and feeding the sludge flocs into a low-density floc concentration chamber.

6. The self-adaptive aggravated sludge clarifier provided by the invention is characterized in that a low-density floc concentrating chamber is arranged at the downstream of a flocculated sludge suspension area, and micro flocs with lower reuse value can be discharged into a sludge treatment system through a sludge discharge and emptying pipeline after being concentrated in the low-density floc concentrating chamber.

7. According to the self-adaptive weighting sludge clarifier provided by the invention, the sedimentation area is provided with the high-density floc collecting hopper, and when water body carries flocs to flow through, the high-density flocs are preferentially settled into the high-density floc collecting hopper, namely, the high-quality high-density flocs are recycled.

8. The self-adaptive weighting sludge clarifier provided by the invention occupies less land and has better application prospect under the conditions of high hydraulic load and the same treatment capacity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an adaptive weighted sludge clarifier according to one embodiment of the present invention;

FIG. 2 is a schematic illustration of a floc passing region in an adaptively weighted sludge clarifier provided in one embodiment of the present invention;

FIG. 3 is a schematic illustration of a floc passing region in an adaptive weighted sludge clarifier provided in yet another embodiment of the present invention;

FIG. 4 is a schematic illustration of a floc passing region in an adaptive weighted sludge clarifier provided in yet another embodiment of the present invention;

FIG. 5 is a schematic illustration of a floc passing region in an adaptive weighted sludge clarifier provided in yet another embodiment of the present invention;

FIG. 6 is a schematic illustration of a coagulation zone in an adaptively weighted sludge clarifier provided in one embodiment of the invention;

FIG. 7 is an enlarged view of a partial structure of a water passing plate in an adaptive weighted sludge clarifier according to an embodiment of the present invention;

FIG. 8 is an enlarged view of a partial structure of a water passing plate in an adaptive weighted sludge clarifier according to still another embodiment of the present invention;

FIG. 9 is a schematic diagram of a high density floc collection hopper in an adaptive weighted sludge clarifier according to one embodiment of the present invention.

Reference numerals illustrate:

1-a coagulation zone; 2-flocculation zone; a 3-precipitation zone;

4-a floc gathering area; 5-flocculating sludge suspension area; 6-a low-density floc concentration chamber;

7-sloping plate separation tube groups; 8-a reactor water inlet; 9-a reactor water outlet;

10-spraying pipe; 11-throat; 12-a dosing tube;

13-a water collecting pipe; 14-floc passing region; 15-a water flow accelerating distributor;

16-a high-density floc collection hopper; 17-flocculation circulation device; 18-a low-density floc circulating device;

19-baffles; 20-a mud discharging device; 21-a floc filter bed layer;

22-a clean water buffer protective layer; 23-clear water collecting device; 24-baffle;

25-motors; 26-connecting shaft; 27-a scraper;

28-a mud bucket; 29-water passing plate.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

The self-adaptive aggravated sludge clarifier provided by the invention is suitable for all water treatment fields adopting coagulating sedimentation, such as water supply coagulating purification; performing standard lifting and reconstruction on sewage; treating water environment such as initial rainwater, river, lake and the like; there are many tree-building methods in the aspects of coagulating sedimentation, heavy metal capturing sedimentation and the like in the steel and electronic industry.

Fig. 1 is a schematic structural diagram of an adaptive weighted sludge clarifier according to an embodiment of the present invention, and as shown in fig. 1, the present invention provides an adaptive weighted sludge clarifier, wherein a section is made along an axial direction of the adaptive weighted sludge clarifier, that is, a direction from left to right in fig. 1, a body of the adaptive weighted sludge clarifier is a tank body with a rectangular cross-section, a reactor water inlet 8 is disposed on one side of the tank body, a reactor water outlet 9 is disposed on the other side of the tank body, a water body to be purified enters the tank body through the reactor water inlet 8, and the purified water body flows out from the water outlet of the reactor. Wherein, inside the tank body, along the flow direction of the water body, a coagulation area 1, a flocculation area 2 and a sedimentation area 3 are sequentially arranged.

For the coagulation zone 1, a spray pipe 10 is arranged at the bottom of the coagulation zone 1, the spray pipe 10 converts the flow direction of fluid entering in the horizontal direction in the water inlet 8 of the reactor into the vertical direction, as shown in fig. 1, the spray pipe 10 sprays water vertically upwards, and the water inlet 8 of the reactor is arranged near the bottom of the tank body and is communicated with the bottom of the spray pipe 10.

In this embodiment, in order to accelerate the water body, a water body accelerating device is provided, and the structure of the water body accelerating device itself is not limited as long as the accelerating action can be achieved.

As a preferred embodiment, as shown in fig. 1, a throat pipe 11 is sleeved at the top water outlet of the spray pipe 10, the throat pipe 11 is vertically arranged and a certain interval is reserved between the top water outlet and the top of the tank body, and the pipe diameter of the throat pipe 11 is larger than that of the spray pipe 10. The spray pipe 10 is also communicated with a dosing pipe 12, and medicines are mixed with the water body after entering the spray pipe 10 and then are sprayed upwards.

The pipe diameter of the spray pipe 10 gradually decreases along the direction close to the throat pipe 11, so that the spray pipe can accelerate the sprayed water body, and the mixing effect is improved. The water body is sprayed out of the spray pipe 10, enters the throat pipe 11, and is sprayed out of the top of the throat pipe 11. The pipe diameter of the throat pipe 11 gradually increases along the direction close to the top of the tank body, so that the water body is diffused to the periphery to be discharged.

In this embodiment, the top of the coagulation zone 1 may be open. Preferably, the top of the coagulation zone 1 can be sealed, and at this time, a closed steel plate is arranged at the top of the coagulation zone 1, and water body is ejected out through the throat pipe 11 and then collides with the top of the tank body, so that the mixing and stirring effects are improved. Under the action of gravity, the water body falls back downwards, and under the action of low pressure formed by spraying water from the spray pipe 10, the water body is sucked into the throat pipe 11 from the gap between the throat pipe 11 and the spray pipe 10, and the circulating stirring is performed again. For the whole coagulation zone 1, the stirring and mixing of the water body and the medicines completely depend on the self kinetic energy of the water body, and an additional stirrer is not required to be arranged for stirring.

For flocculation zone 2, a spout 10 is also provided at the bottom of flocculation zone 2, which spout 10 sprays water vertically upwards. Meanwhile, the water collecting pipe 13 is arranged at the top of the coagulation zone 1, the arrangement position of the water collecting pipe 13 is not limited, and the water collecting pipe 13 can be arranged at the lower part of the coagulation zone 1 or in the middle part of the coagulation zone 1, so long as the water injection operation into the flocculation zone 2 can be realized. Preferably, as shown in fig. 1, the water collection pipe 13 is located in the area between the throat 11 and the top of the tank so that the water in the coagulation zone 1 can enter the flocculation zone 2 via the water collection pipe 13. Wherein, a plurality of small holes can be arranged on the pipe wall of the water collecting pipe 13 positioned in the coagulation zone 1 for water inflow. The portion of the water collection pipe 13 located in the flocculation zone 2 is in direct communication with the bottom of the spout 10 located in the flocculation zone 2. The top water outlet of the spray pipe 10 is also sleeved with a throat pipe 11, the throat pipe 11 is vertically arranged and a certain interval is reserved between the top of the tank body, and the pipe diameter of the throat pipe 11 is larger than that of the spray pipe 10. The spray pipe 10 is also communicated with a dosing pipe 12, and medicines are mixed with the water body after entering the spray pipe 10 and then are sprayed upwards.

Wherein, the dosing pipe 12 of the coagulation zone 1 and the dosing pipe 12 of the flocculation zone 2 can be respectively used for adding different medicines. For example, the added drug may be polymeric alumina, polyacrylamide, polymeric ferric sulfate, or the like. The pipe diameter of the spray pipe 10 gradually decreases along the direction close to the throat pipe 11, so that the spray pipe can accelerate the sprayed water body, and the mixing effect is improved. The water body is sprayed out of the spray pipe 10, enters the throat pipe 11, and is sprayed out of the top of the throat pipe 11. The pipe diameter of the throat pipe 11 gradually increases along the direction close to the top of the tank body, so that the water body is diffused to the periphery to be discharged.

For example, the top of the flocculation zone 2 can be sealed, and water body is ejected out through the throat pipe 11 and then collides with the top of the tank body, so that the mixing and stirring effects can be improved. Under the action of gravity, the water body falls downwards, is sucked into the throat pipe 11 from the gap between the throat pipe 11 and the spray pipe 10 under the action of low pressure, and is circularly stirred again. For the whole flocculation area 2, the stirring and mixing of the water body and the medicines completely depend on the self kinetic energy of the water body, and an additional stirrer is not required to be arranged for stirring. The jet pipe 10 in the flocculation area 2 is sprayed to form a micro low pressure, so that the stirring of the internal circulation is not severe, the integrity of the flocs is ensured, and the breaking of the alum flocs is effectively reduced.

Wherein, the shower nozzle in the coagulation zone 1 and the shower nozzle in the flocculation zone 2 all form low pressure because of the injection water, and the dosing pipe 12 is under the condition that does not have the check valve, and the water in the jar body can not flow back to the medicine jar pollution medicament through the dosing pipe 12.

For example: in case of large water volume, in order to increase the throughput of the single plant, a separate coagulation zone 1 may be provided followed by irradiation of a plurality of flocculation zones 2.

The self-adaptive weighting sludge clarifier provided by the invention is characterized in that a water body accelerating device is respectively arranged in a coagulation zone 1 and a flocculation zone 2, the water body accelerating device is provided with a spray pipe 10 and a throat pipe 11, and a water inlet mask of the throat pipe 11 is arranged above the spray pipe 10 to form an accelerating water channel. After entering the spray pipe 10 from the water inlet 8 of the reactor, at least a part of the inner diameter of the spray pipe 10 is reduced, so that the water body can be accelerated after flowing out of the spray pipe 10 and then passes through an acceleration water channel, and the water body is sprayed out from the top opening of the throat pipe 11 and is dispersed around. Under the action of gravity, the water body falls, under the action of low pressure, the water body enters an acceleration water channel through the interval between the throat pipe 11 and the spray pipe 10, and the water body and the medicines in the coagulation zone 1 are stirred in a hydraulic circulation mode. One end of a water collecting pipe 13 is arranged in the coagulation zone 1, the other end of the water collecting pipe is communicated with a spray pipe 10 in the flocculation zone 2, the spray pipe 10 arranged in the flocculation zone 2 and a venturi 11 stir water and medicines in the flocculation zone 2 in a hydraulic circulation mode, and the stirred water can flow into a downstream sedimentation zone 3 for subsequent purification. In the whole process, the stirring is carried out by depending on the kinetic energy of the water body, the stirrer is not required to be arranged in the coagulation area 1 and the flocculation area 2, the power load of the whole self-adaptive weighting sludge clarifier is reduced, the running cost is reduced, and meanwhile, the whole maintenance burden of the self-adaptive weighting sludge clarifier is reduced because the stirrer is not required to be maintained or replaced.

The water flowing out of the flocculation zone 2 continuously enters the sedimentation zone 3, and for the sedimentation zone 3, independent structures can be respectively arranged between the flocculation zone 2 and the sedimentation zone 3, and a partition plate can be shared at the adjacent part of the sedimentation zone 3 and the flocculation zone 2.

In this embodiment, an opening may be provided at a position of the partition plate between the flocculation zone 2 and the sedimentation zone 3 near the bottom as a floc passing zone 14 to communicate the flocculation zone 2 with the sedimentation zone 3. A high-density floc collecting hopper 16 is arranged in the sedimentation zone 3, and the high-density floc collecting hopper 16 can be of a conical funnel-shaped structure, and an inclined plate and a vertical plate which are gradually inclined upwards are arranged on the right side of the sedimentation zone 3 as shown in fig. 1, so that the conical funnel-shaped structure is formed. A certain interval is reserved between the top of the high-density floc collecting hopper 16 and the top of the tank body so as to allow water to pass through.

The water flow accelerating distributor 15 is disposed in the sedimentation area 3, and the specific structure of the water flow accelerating distributor 15 is not limited, in this embodiment, a notch is disposed on the water flow accelerating distributor 15, and the notch allows the flocs to pass through. When the water body carries the flocs to flow through, the high-density flocs are preferentially settled into the high-density flocs collecting hopper 16, namely, the high-quality high-density flocs are recycled. By the arrangement, small vortex can be formed by the speed difference after the water body passes through the notch, so that the mixed contact effect is improved; furthermore, the flocs may be caused to rise up and through the flow accelerating distributor member 15 and then redirected down into the high density floc collection hopper 16.

Preferably, the water flow accelerating distributor may be a screen plate. One end of the water flow acceleration distributor 15 can be connected with a partition plate between the flocculation zone 2 and the sedimentation zone 3, and the other end can be connected with the side wall of the high-density floc collecting hopper 16. After exiting flocculation zone 2, the water passes through the flow acceleration distributor 15 and then continues upward. The water flow accelerating distributor 15 can accelerate water flow and uniformly distribute the reacted water body inside the equipment, so that partial short flow is avoided.

The inclination degree of the screen plate is not limited, and the screen plate can be horizontally arranged or inclined at 45 degrees or other angles.

Due to the acceleration and rising effects of the water body, smaller flocs are gathered continuously to form larger flocs, a fluidized bed with continuously increased floc concentration is formed in the region, and the small colloidal particles passing through the fluidized bed are intercepted, gathered and filtered, so that most suspended colloids of the water body can be removed. When the flocs are gathered to a certain degree, the high-density flocs fall into the high-density floc collecting hopper 16, and the low-density flocs can pass through the high-density floc collecting hopper 16 and continue to be conveyed downstream along with the water body.

Wherein a floc circulation device 17 can be arranged and connected with the bottom of the high-density floc collecting hopper 16, and the high-density flocs are pumped out through a pipeline and conveyed to the coagulation zone 1. Wherein the line of the floc circulation means 17 may be in communication with the side of the nozzle 10 facing away from the dosing tube 12. The flocculation circulation device 17 may only include a pipeline connecting the coagulation area 1 and the high-density flocculation collection bucket 16, and sucks the flocculation into the coagulation area 1 by using a low-pressure principle, or may include a pump body, firstly, the flocculation in the high-density flocculation collection bucket 16 is pumped out, and then the flocculation is conveyed into the coagulation area 1 through the pipeline connected with the pump body.

Wherein, the inner wall in the high-density floc collecting hopper 16 can be welded with mutually crossed rod bodies for assisting in separating the high-density flocs, and can play a role in resisting turbulence.

A flocculated sludge suspension zone 5 is also arranged in the sedimentation zone 3, wherein the flocculated sludge suspension zone 5 can also be of a conical funnel-shaped structure. A low-density floc concentration chamber 6 is also arranged at the downstream of the flocculation sludge suspension zone 5, and the low-density floc concentration chamber 6 can also be in a conical funnel-shaped structure. Wherein, the low-density floc concentrating chamber 6 is in butt joint with one side of the flocculation sludge suspension area 5, the flocs with small density are upwards through the side wall of the low-density floc concentrating chamber 6, and finally fall into the low-density floc concentrating chamber 6.

Wherein, the openings of the flocculation sludge suspension area 5 and the low-density flocculation concentration chamber 6 are upward. Wherein, the upper parts of the flocculation sludge suspension zone 5 and the low-density flocculation concentration chamber 6 are provided with an inclined plate separation tube group 7, and water flows out from a water outlet 9 of the reactor after flowing through the inclined plate separation tube group 7 from bottom to top.

For installation of the inclined plate separation tube group 7, two fixing plates can be welded on the inner wall of the tank body at intervals, the two fixing plates are obliquely arranged, the inclined angle is consistent with the inclined angle of the inclined plate separation tube group 7, and two ends of the inclined plate separation tube group 7 can be welded or bolted to the corresponding fixing plates. So set up, be favorable to improving the internal space utilization of jar, no dead angle.

Wherein, in order to improve the purifying effect, a baffle plate 24 can be arranged in the flocculation sludge suspension zone 5, the baffle plate 24 can be vertically arranged, the tail part of the baffle plate 24 can incline to the right and below, and the plate surface of the baffle plate 24 is opposite to the high-density floc collecting hopper 16. The top of the baffle 24 may be connected to the bottom of the fixed plate, leaving a space between the bottom of the baffle 24 and the bottom of the tank for the passage of water. Wherein the bottom of the baffle 24 extends into the flocculated sludge suspension zone 5. The baffle 24 and the side wall of the high-density floc collecting hopper 16 form a floc gathering area 4, the low-density flocs are blocked by the baffle 24 and can be gathered continuously in the floc gathering area 4 to form a fluidized bed with continuously increased floc concentration, suspended matters in water are removed again, and the purification effect of the water is improved.

At the bottom of the flocculation sludge suspension zone 5, a low-density floc circulation device 18 is provided, and the low-density flocs are pumped out through a pipeline and conveyed to the flocculation zone 2. Wherein the piping of the low density floc circulation device 18 may be in communication with the side of the spout 10 facing away from the dosing tube 12. By the arrangement, high-density floccules can enter a coagulation area 1 with relatively intense stirring, and low-density floccules can enter a flocculation area 2 with relatively stable stirring, so that the circulation of the whole water body is facilitated. In addition, the residual medicament in the reflowed flocs reacts again, so that the medicament usage amount is greatly reduced, the medicament effective rate is improved, the chemical medicament residues in the discharged water body are greatly reduced, and the environmental pollution is reduced.

When the water flows downstream from the interval between the baffle 24 and the tank body, the flocs have a rising trend under the action of the side wall of the low-density floc concentration chamber 6, but the flocs have a falling trend under the suction action of the low-density floc circulation device 18, at this time, the suction speed of the low-density floc circulation device 18 on the next-density flocs can be adjusted, so that the two forces up and down of the flocs reach the balanced point to form a dynamic suspended sludge layer called a floc filter bed layer 21. The smaller flocs are further enlarged through the filtering and adsorption effects of the floc filter bed layer 21, the larger flocs can be settled to the flocculated sludge suspension area 5, and the large flocs flow back to the flocculation area 2 at the front section through the low-density floc circulation device 18 for recycling. While the finer flocs fall into the low density floc concentrating chamber 6, which, due to its lower utility value, can be discharged out of the tank through the sludge discharge device 20. Meanwhile, when the water body passes through the floc filter bed layer 21 upwards, the water body can be further purified, and the purification effect is improved.

And the suction speed of the low-density floc circulation device 18 on the secondary density flocs can be adjusted to change the height of the floc filter bed layer 21, so that the distance between the floc filter bed layer 21 and the inclined plate separation tube group 7 is kept in a certain range. Because the space between the floc filter bed layer 21 and the inclined plate separation tube group 7 is excessively large, a space is wasted, and the treatment efficiency is reduced; if the distance between the floc filter bed 21 and the inclined plate separation tube group 7 is too small, the efficiency of the inclined plate separation tube group 7 is lowered once the sludge discharge amount is reduced or the sludge is not discharged in time, and the blockage is seriously caused.

Wherein a sludge scraper may be provided in the sedimentation zone 3 for cleaning up sludge (also called flocs) deposited at the bottom of the sedimentation zone 3. The mud scraper specifically comprises a motor 25, a connecting shaft 26 and a mud scraper 27; the motor 25 is arranged outside the tank body of the self-adaptive weighting sludge clarifier, an output shaft of the motor 25 is connected with one end of a connecting shaft 26, the other end of the connecting shaft 26 is connected with a scraper 27, and the scraper 27 is arranged in parallel with the bottom of the sedimentation zone 3. The motor 25 can be mounted on the top of the tank body through bolts, an output shaft of the motor 25 is connected with the top end of the connecting shaft 26, the top end of the connecting shaft 26 is downward and stretches into the tank body, and the connecting shaft 26 can be positioned in the area between the baffle 24 and the low-density floc concentration chamber 6. The scraper 27 is arranged perpendicular to the connecting shaft 26, and at this time, the scraper 27 is parallel to the bottom of the flocculated sludge suspension zone 5. The bottom of the flocculation sludge suspension zone 5 is recessed downward to form a sludge hopper 28, and the sludge hopper 28 is communicated with the spray pipe 10 located in the flocculation zone 2 through the low-density floc circulation device 18. When the flocculation sludge flocculation device is used, the motor 25 drives the mud scraping plate 27 to rotate through the connecting shaft 26, the water body near the bottom of the flocculation sludge suspension area 5 is disturbed, vortex is formed at the mud bucket 28, the sludge deposited at the bottom of the flocculation sludge suspension area 5 is wound into the mud bucket 28, and then the sludge is conveyed into the spray pipe 10 positioned in the flocculation area 2 through the low-density flocculation circulation device 18 to participate in mixing and stirring again. The low-density floccule circulation device 18 can be a pipeline which directly connects the spray pipe 10 and the mud bucket 28 in the flocculation area 2, and sucks floccules into the flocculation area 2 by means of low pressure, or pumps out the floccules through a pump body and conveys the floccules to the flocculation area 2 when starting debugging or treating low turbid water, so that the floccules amount in the flocculation area 2 is increased. By the arrangement, the flocs can be prevented from being deposited at the bottom of the sedimentation zone 3, so that the flocs are participated in the purification process again, and the water purification efficiency is improved.

And, the clear water collection device 23 located above the inclined plate separation tube group 7 can be in a groove type structure, a plurality of tooth-shaped openings can be formed in the edge of the opening of the groove wall, after the water body is separated by the inclined plate separation tube group 7, the water body is diffused into the clear water collection device 23 through the tooth-shaped openings, and the water outlet of the clear water collection device 23 is communicated with the water outlet 9 of the reactor. Wherein the water outlet 9 of the reactor is arranged near the top of the tank body. Wherein, the interval between the inclined plate separation tube group 7 and the clear water collecting device 23 can be adjusted, and the area between the inclined plate separation tube group 7 and the clear water collecting device can be used as a clear water buffer protection layer 22 to prevent a small part of floccules from entering the clear water collecting device 23.

Wherein, the bottom of the high-density floc collecting hopper 16, the flocculated sludge suspension area 5 and the low-density floc concentrating chamber 6 are respectively provided with a sludge discharging device 20 for discharging sludge.

Wherein, the top of this jar body still can set up the manhole to make things convenient for maintainer to get into the jar body.

The invention also provides a sewage treatment system, which comprises the self-adaptive weighting sludge clarifier; the water inlet system is connected with the water inlet 8 of the reactor; and the water purifying system is connected with the water outlet 9 of the reactor.

FIG. 6 is a schematic illustration of a coagulation zone in an adaptively weighted sludge clarifier provided in one embodiment of the invention; as shown in fig. 6, a water passing plate 29 may be disposed in the interior of the coagulation zone 1 in the longitudinal direction to divide the coagulation zone 1 into a plurality of chambers so as to extend the flow path of the water body and improve the mixing effect.

FIG. 7 is an enlarged view of a partial structure of a water passing plate in an adaptive weighted sludge clarifier according to an embodiment of the present invention; FIG. 8 is an enlarged view of a partial structure of a water passing plate in an adaptive weighted sludge clarifier according to still another embodiment of the present invention; as shown in fig. 7 and 8, the water passing plate 29 is provided with a plurality of small holes for passing water near the bottom of the coagulation zone 1, and the small holes may be rectangular or other polygons. The water in the middle chamber can enter the edge chamber through the small holes and then enter the flocculation zone 2 through the water collecting pipe 13.

The flocculation zone 2 can be located at any side of the front side, the rear side, the left side and the right side of the coagulation zone 1, one coagulation zone 1 can also correspond to a plurality of flocculation zones 2, the positions and the numbers of the flocculation zones 2 can be designed according to the needs, and water in the coagulation zone 1 can enter the flocculation zone 2. Similarly, the number of throats 11 may be designed as desired.

FIG. 2 is a schematic illustration of a floc passing region in an adaptively weighted sludge clarifier provided in one embodiment of the present invention; FIG. 3 is a schematic illustration of a floc passing region in an adaptive weighted sludge clarifier provided in yet another embodiment of the present invention; FIG. 4 is a schematic illustration of a floc passing region in an adaptive weighted sludge clarifier provided in yet another embodiment of the present invention; as shown in fig. 2, 3 and 4, wherein bending flaps may be arranged at the floe passing area 14 to create different water flow trajectories. FIG. 5 is a schematic illustration of a floc passing region in an adaptive weighted sludge clarifier provided in yet another embodiment of the present invention; as shown in FIG. 5, floc passing area 14 may also be provided with tortuous tubing to create different water flow trajectories. Wherein, the different water inlet modes can be selected according to the needs.

FIG. 9 is a schematic diagram of a high density floc collection hopper in an adaptive weighted sludge clarifier according to one embodiment of the present invention; as shown in fig. 9, the side of the high-density floc collecting hopper 16 near the flocculation zone may be lower than the other side far from the flocculation zone, so that the high-density flocs may be collected preferentially, so that the density of the recovered flocs is higher, and meanwhile, the amount of flocs entering the downstream may be reduced, and the workload of the subsequent stage on floc separation may be reduced.

In this embodiment, baffles 19 may be provided on the partition between flocculation zone 2 and sedimentation zone 3 to enhance the mixing effect. For example, the baffle 19 may be disposed obliquely downward. Small holes can be formed on the plate surface of the baffle plate, and small vortex is formed due to speed difference after water flows, so that the mixing effect is improved.

In this embodiment, the tank body may be made of metal material, polymer material, reinforced concrete, glass fiber reinforced plastic, and other materials.

Further, the sewage treatment system further comprises: the sludge treatment system is connected with the sludge discharge device 20.

In summary, the self-adaptive aggravated sludge clarifier provided in the above embodiment is provided with the rivers acceleration distribution piece between the flocculation passing area and the high density flocculation collection bucket, be provided with a plurality of breachs on this rivers acceleration distribution piece, when on the one hand water passes through, the passageway narrows, and the rivers acceleration distribution piece can block the flocculation this moment, thereby can realize the preliminary integration to the flocculation, can accelerate the water through setting up the breach simultaneously, the ascending water of acceleration can make less flocculation gather together constantly and form great flocculation, form a flocculation bed that the flocculation is constantly increased in this region. On the other hand, the notch also has the function of diversion, and the disturbed water flow is redistributed after passing through each notch so that the water body can be uniformly distributed in the high-density floc collecting hopper.

The self-adaptive aggravated sludge clarifier provided in the embodiment is beneficial to enabling the redistributed water body to be more uniformly distributed in the high-density floc collecting hopper by arranging the water flow acceleration distribution part horizontally. The self-adaptive weighting sludge clarifier provided by the invention is characterized in that the flocculation sludge suspension area is arranged at the downstream of the high-density floc collecting hopper, so that the low-density flocs can be collected for recycling.

The self-adaptive aggravated sludge clarifier provided in the embodiment is characterized in that the low-density floc circulating device is connected with the water body accelerating device positioned in the flocculation zone, and the floc circulating device is connected with the water body accelerating device positioned in the coagulation zone. So set up for high density flocculation can get into the comparatively fierce coagulation zone of stirring, high density flocculation can be to the flocculation in the flocculation zone supplement simultaneously to help improving the purifying effect in the flocculation zone, improve the utilization efficiency of medicine, low density flocculation can get into the flocculation zone of stirring relatively stable, is favorable to the circulation of whole water.

The self-adaptive weighting sludge clarifier provided in the embodiment is characterized in that the tops of the coagulation area and the flocculation area are respectively in a closed shape, and water sprayed out from the water outlet of the throat can collide with the closed top to form a turbulent flow state and momentum conversion, so that the stirring effect is improved.

It should be noted that the low pressure referred to in this application is a relative concept, and the design of each reflux is based on the bernoulli principle, that is, the pressure at the position where the liquid flow rate is high is smaller than the pressure at the position where the liquid flow rate is low, and the reflux is realized by the pressure difference generated by the two positions.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (8)

1. An adaptive weighted sludge clarifier, comprising:

the coagulation zone (1) is provided with a reactor water inlet (8);

a water collecting pipe (13) with one end arranged in the coagulation area (1) for collecting water in the coagulation area (1);

the flocculation area (2) is arranged at the downstream of the coagulation area (1), and the other end of the water collecting pipe (13) enters the flocculation area (2);

the water body accelerating device is respectively arranged in the coagulation area (1) and the flocculation area (2), and comprises:

-a nozzle (10) adapted to be connected to the other end of the reactor water inlet (8) or the water collection pipe (13), at least a portion of the inner diameter of the nozzle (10) decreasing in the direction of flow of the body of water;

the throat pipe (11) comprises a throat pipe (11) water inlet and a throat pipe (11) water outlet, the throat pipe (11) water inlet mask is arranged above the spray pipe (10), and an acceleration water channel is formed between the spray pipe (10) and the throat pipe (11);

the sedimentation zone (3) is arranged at the downstream of the flocculation zone (2), and a reactor water outlet (9) is arranged on the sedimentation zone (3);

the connecting end of the mud scraper is arranged outside the tank body of the self-adaptive weighted mud clarifying tank, and the action end of the mud scraper stretches into the bottom of the sedimentation zone (3) and is suitable for cleaning mud deposited at the bottom of the sedimentation zone (3);

the mud scraper comprises a motor (25), a connecting shaft (26) and a mud scraper (27);

the motor (25) is arranged outside the tank body of the self-adaptive weighting sludge clarifier, an output shaft of the motor (25) is connected with one end of the connecting shaft (26), the other end of the connecting shaft (26) is connected with the scraper (27), and the scraper (27) is arranged in parallel with the bottom of the sedimentation zone (3);

a flocculation passing area (14) is arranged between the flocculation area (2) and the sedimentation area (3), water enters the sedimentation area (3) through the flocculation passing area (14), at least one high-density flocculation collecting hopper (16) is arranged in the sedimentation area (3), and part of water enters the high-density flocculation collecting hopper (16);

at least one floc circulation device (17), one end of which acts in the high-density floc collection hopper (16) and the other end of which is connected to the nozzle (10) of at least one of the water body acceleration devices.

2. The adaptive weighted sludge clarifier of claim 1 wherein,

the bottom of the sedimentation area (3) is inwards sunken to form a mud bucket (28) which is suitable for containing the sludge collected by the mud scraping plate (27), and the mud bucket (28) is connected with the water body accelerating device in the flocculation area (2) through the low-density flocculation circulation device (18).

3. The adaptive weighted sludge clarifier according to any one of the claims 1-2, wherein,

at least a part of the spray pipe (10) is arranged in a conical shape along the flowing direction of the water body.

4. The adaptive weighted sludge clarifier of claim 3 wherein,

the throat pipe (11) is arranged in a conical shape in a region corresponding to the spray pipe (10).

5. The adaptive weighted sludge clarifier of claim 1 wherein,

the flocculation sludge collecting device further comprises a flocculation sludge suspension area (5) which is arranged at the downstream of the high-density flocculation collection hopper (16), and a flocculation gathering area (4) is arranged between the flocculation sludge suspension area (5) and the high-density flocculation collection hopper (16).

6. The adaptive weighted sludge clarifier of claim 5 wherein,

the flocculation sludge treatment system also comprises a low-density flocculation concentration chamber (6) which is arranged at the downstream of the flocculation sludge suspension zone (5).

7. The adaptive weighted sludge clarifier of claim 6 wherein,

the device also comprises an inclined plate separation tube group (7) which is arranged above the flocculation sludge suspension area (5) and the low-density flocculation concentration chamber (6), wherein the inclined plate separation tube group (7) comprises a plurality of inclined guide plates.

8. The adaptive weighted sludge clarifier of claim 7 wherein,

the device also comprises a clear water collecting device (23) which is arranged above the inclined plate separation tube group (7) and is connected with the water outlet (9) of the reactor.