CN114031203A

CN114031203A - Self-circulation high-density suspended sludge filtering and settling water purifier

Info

Publication number: CN114031203A
Application number: CN202110711292.XA
Authority: CN
Inventors: 张崭华; 张恒
Original assignee: Beijing Proviridia Technology Co Ltd
Current assignee: Beijing Proviridia Technology Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-02-11
Anticipated expiration: 2041-06-25
Also published as: CN114031203B

Abstract

The invention relates to the technical field of water treatment equipment, and provides a self-circulation high-density suspended sludge filtering and settling water purifier, which comprises: the coagulation area is used for collecting water in the coagulation water collecting chamber; 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; and the clear water filter is arranged at the downstream of the settling zone and is communicated with the water outlet of the reactor. The self-circulation high-density suspended sludge filtration and sedimentation water purifier provided by the invention is stirred by the self kinetic energy of the water body, and a stirrer is not required to be arranged in a coagulation area and a flocculation area, so that the power load of the whole self-circulation high-density suspended sludge filtration and sedimentation water purifier is reduced, the running cost is favorably reduced, and meanwhile, the quality of outlet water can be further improved due to the arrangement of a clear water filter.

Description

Self-circulation high-density suspended sludge filtering and settling water purifier

Technical Field

The invention relates to the technical field of water treatment equipment, in particular to a self-circulation high-density suspended sludge filtering and settling water purifier.

Background

The coagulating sedimentation treatment technology is an important technology in the current water treatment technology, can reduce the sensory indexes of 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 the aspects of drinking water treatment, sewage and wastewater treatment, high COD (chemical oxygen demand) and high salt water treatment and the like. In the traditional coagulating sedimentation technology, the medicament and water are fully mixed by multistage stirring at the front section, and then the precipitation at the rear section is carried out.

The self-circulation high-density suspended sludge filtering and settling water purifier in the related technology mainly comprises a reactor main body, wherein the reactor main body is divided into a coagulation area, a flocculation area and a settling separation area, and a water body is directly discharged after coagulation, flocculation and settling treatment. However, this reactor main body does not have a clear water filtration function, and cannot further improve the water quality.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects that the self-circulation high-density suspended sludge filtration and sedimentation water purifier in the related art does not have a clear water filtering function and cannot further improve the water quality, thereby providing the self-circulation high-density suspended sludge filtration and sedimentation water purifier.

The invention provides a self-circulation high-density suspended sludge filtering and settling water purifier, which comprises: the coagulation zone is provided with a reactor water inlet; the coagulation water collecting chamber is arranged in the coagulation area, and a water inlet of the coagulation water collecting chamber is communicated with the coagulation area; one end of the water collecting pipe is communicated with the coagulation water collecting chamber and is suitable for collecting the water body in the coagulation water collecting chamber; 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 arranged in the coagulation area and the flocculation area respectively, and comprises: a spray pipe adapted to be connected to the other end of the water inlet of the reactor or the water collection pipe, at least a portion of the inner diameter of the spray pipe decreasing in the direction of flow of the body of water; the throat pipe comprises a throat pipe water inlet and a throat pipe water outlet, the throat pipe water inlet is covered above the spray pipe, and an acceleration water channel is formed between the spray pipe and the throat pipe; the sedimentation zone is arranged at the downstream of the flocculation zone and is provided with a reactor water outlet; and the clear water filter is arranged at the downstream of the settling zone and is communicated with the water outlet of the reactor.

Furthermore, the interior of the clean water filter is divided into a clean water chamber, a filter chamber and a suspension chamber from top to bottom; the filter chamber is communicated with the water outlet of the reactor, the bottom of the filter chamber is communicated with the top of the suspension chamber, and a filter material is arranged in an area between the filter chamber and the suspension chamber; the suspension chamber is communicated with the clear water chamber through a clear water channel which is longitudinally arranged.

Furthermore, a plurality of filter caps are arranged between the filter chamber and the suspension chamber, and the filter caps are uniformly arranged in an array.

Further, the filtering chamber comprises two mutually independent chambers, each independent chamber is communicated with the water outlet of the reactor through a first pipeline, the bottom of each independent chamber is communicated with the top of the suspension chamber, and each independent chamber is communicated with the outside through a second pipeline; and the first pipeline and the second pipeline are both provided with control valves.

Further, at least a part of the spray pipe is arranged in a conical shape along the flowing direction of the water body.

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

Furthermore, the inner wall of the coagulation area is provided with a coagulation water collecting plate, the coagulation water collecting plate and the inner wall of the coagulation area form a coagulation water collecting chamber, and a water inlet of the coagulation water collecting chamber is positioned at the bottom of the coagulation water collecting chamber and is suitable for enabling water in the coagulation area to enter the coagulation water collecting chamber.

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

Further, the settling zone also includes a floc fluidized bed chamber located upstream of the first floc collection hopper.

Further, the settling zone also includes a hydraulic channel downstream of the first floe collection hopper.

Furthermore, the settling zone also comprises a floc settling chamber arranged at the downstream of the hydraulic channel, and a second floc passing zone is arranged between the floc settling chamber and the hydraulic channel and is suitable for enabling the water in the hydraulic channel to enter the floc settling chamber.

Furthermore, a separation pipe group and a plurality of second floc collecting hoppers are arranged in the floc settling chamber; the separation pipe group is arranged above the floc settling chamber and comprises a plurality of guide pipes; a plurality of second floc collecting hoppers follow the length direction of floc settling chamber sets gradually the below of floc settling chamber, and every the opening of second floc collecting hoppers all faces separation tube group sets up.

Furthermore, the self-circulation high-density suspended sludge filtering and settling water purifier also comprises a plurality of second guide plates arranged along the height direction, the second guide plates are arranged at the outer side of the second floc collecting hopper, one end of each second guide plate is connected with the outer side wall of the second floc collecting hopper, and the other end of each second guide plate extends towards the bottom wall of the floc settling chamber; and a space is reserved between the second flow guide plate and the bottom wall of the floc settling chamber to form a third floc passing area.

Further, the second flow guide plate comprises two flow guide plates which are symmetrically arranged on two sides of the second floc collecting hopper.

Further, the second floc passing zone is located below the floc settling chamber; the second guide plate, the outer side wall of the second floc collecting hopper and the area between the bottoms of the floc settling chambers form a water distribution area, and the second floc passing area is communicated with the water distribution area.

Furthermore, a turbulence resisting plate is further arranged in the floc settling chamber and is vertically arranged, and the length direction of the turbulence resisting plate is consistent with that of the floc settling chamber.

Furthermore, a clear water collecting device is further arranged in the floc settling chamber, and the clear water collecting device is positioned above the separation pipe group and is connected with the water outlet of the reactor.

The technical scheme of the invention has the following advantages:

the self-circulation high-density suspended sludge filtering and settling water purifier provided by the invention is characterized in that a water body accelerating device is respectively arranged in the coagulation area and the flocculation area, the water body accelerating device is provided with a spray pipe and a throat pipe, and a water inlet of the throat pipe is covered above the spray pipe to form an accelerating water channel. After entering the spray pipe from the water inlet of the reactor, at least one part of the inner diameter of the spray pipe is reduced, so that the water body can be accelerated after flowing out of the spray pipe, and then is sprayed out from the top opening of the throat pipe through the acceleration water channel and is dispersed all around. Under the action of gravity, the water body falls down, and under the action of low pressure, the water body enters the accelerating 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 communicated with a coagulation water receiving chamber in the coagulation area, the other end of the water collecting pipe is communicated with a spray pipe in the flocculation area, the spray pipe and the throat pipe which are arranged in the flocculation area are used for stirring water and medicines in the flocculation area in a hydraulic circulation mode, and the stirred water can flow into a downstream sedimentation area for subsequent purification. In the whole process, the kinetic energy of the water body is used for stirring, a stirrer is not required to be arranged in the coagulation area and the flocculation area, the power load of the whole self-circulation high-density suspended sludge filtration and sedimentation water purifier is reduced, and the running cost is favorably reduced. Meanwhile, the clear water filter is arranged, so that the water outlet quality can be further improved.

According to the self-circulation high-density suspended sludge filtering and settling water purifier provided by the invention, the first floc collecting hopper is arranged in the settling area, and when a water body carries flocs to flow through, the high-density flocs preferentially settle into the first floc collecting hopper, namely, the high-quality high-density flocs are recycled.

The self-circulation high-density suspended sludge filtering and settling water purifier provided by the invention is provided with a floc fluidized bed chamber in a settling zone, and can intercept, gather and filter passing small colloid particles to remove most suspended colloids in a water body.

The self-circulation high-density suspended sludge filtering and settling water purifier provided by the invention is provided with the floc circulating device which is connected with the bottom of the first floc collecting hopper, and the high-density flocs in the first floc collecting hopper are conveyed to the coagulation area, so that the residual medicament in the flocs is reacted again, 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.

According to the self-circulation high-density suspended sludge filtering and settling water purifier provided by the invention, the turbulence resistant plate is arranged in the floc settling chamber, so that the sedimentation effect can be prevented from being influenced by turbulence formed by water flow impact in the horizontal direction.

According to the self-circulation high-density suspended sludge filtering and settling water purifier provided by the invention, the second guide plates are symmetrically distributed on two sides of the second floc collecting hopper, so that the bottom space of the floc settling chamber is fully facilitated, and the third floc passing area in the settling water distribution area is a longitudinal gap, so that the space is smaller, water is distributed and fed for resistance, and the water quality of discharged water is ensured to be uniform.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a self-circulating high-density suspended sludge filtration and sedimentation water purifier provided in one embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;

FIG. 5 is a cross-sectional view taken at C-C of FIG. 2;

FIG. 6 is a schematic structural diagram of a U-shaped pipe in a self-circulation high-density suspended sludge filtration and sedimentation water purifier provided in an embodiment of the present invention;

FIG. 7 is a schematic diagram of a clear water filter in a self-circulating high density suspended sludge sedimentation water purifier according to an embodiment of the present invention;

FIG. 8 is a right side view of FIG. 1;

FIG. 9 is a top view of the filter chamber of FIG. 7;

FIG. 10 is a schematic structural diagram of a self-circulating high-density suspended sludge filtration and sedimentation water purifier provided in yet another embodiment of the present invention;

FIG. 11 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in one embodiment of the present invention;

FIG. 12 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in yet another embodiment of the present invention;

FIG. 13 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in yet another embodiment of the present invention;

FIG. 14 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in yet another embodiment of the present invention.

Description of reference numerals:

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

4-floc fluidized bed chamber; 5-a hydraulic channel; 6-floc settling chamber;

7-a spray pipe; 8-a throat; 9-a medicine feeding pipe;

10-a water collecting pipe; 11-a first floe passing zone; 12-a second floe passage zone;

13-a third floe passage zone; 14-a separation tube set; 15-U-shaped tube;

16-a coagulation water collecting chamber; 17-a coagulation water collecting plate; 18-water distribution plate;

19-a hydraulic guide vane; 20-a speed reduction plate; 21-water distribution area;

22-a turbulence resistant plate; 23-a first baffle; 24-a second baffle;

25-a third baffle; 26-a separation plate; 27-a sludge discharge device;

28-exhaust valve; 29-a first floc collection hopper; 30-a second floc collection hopper;

31-clear water filter; 32-clear water chamber; 33-filtering chamber;

34-a suspension room; 35-clear water channel; 36-a filter material;

37-a filter cap; 38-a first conduit; 39-a second conduit;

40-a control valve; 41-water conveying pipe.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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

FIG. 1 is a schematic structural diagram of a self-circulating high-density suspended sludge filtration and sedimentation water purifier provided in one embodiment of the present invention; FIG. 2 is a schematic view of a portion of the structure of FIG. 1; as shown in fig. 1 and 2, this embodiment provides a self-loopa high density suspension mud filters heavy water purifier, along the axis direction of self-loopa high density suspension mud filters heavy water purifier, also be the cross-section for the direction from left to right in fig. 1, this self-loopa high density suspension mud filters heavy water purifier's body is the circular shape of cross-section jar body, one side of the jar body is provided with the reactor water inlet, the opposite side is provided with the reactor delivery port, treat that the water that purifies gets into the jar internal through the reactor water inlet, the water that purifies flows from the delivery port of reactor. Wherein, in the interior of the tank body, along the flowing direction of the water body, a coagulation zone 1, a flocculation zone 2, a sedimentation zone 3 and a clear water filter 31 are arranged in sequence.

For the coagulation zone 1, a spray pipe 7 is arranged at the bottom of the coagulation zone 1, the spray pipe 7 converts the flow direction of the horizontally-oriented fluid entering from the water inlet of the reactor into the vertical direction, as shown in fig. 2, the spray pipe 7 sprays water vertically upwards, and the water inlet of the reactor is arranged near the bottom of the tank body and is communicated with the bottom of the spray pipe 7.

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

As a preferred embodiment, as shown in fig. 1, a throat 8 is sleeved at a water outlet at the top of the nozzle 7, the throat 8 is vertically arranged and spaced from the top of the tank, wherein the diameter of the throat 8 is larger than that of the nozzle 7. The spray pipe 7 is also communicated with a medicine feeding pipe 9, and the medicine enters the spray pipe 7 and then is mixed with the water body and then is sprayed upwards.

Wherein, the pipe diameter of spray tube 7 reduces along the direction of being close to choke 8 gradually, can play the effect of accelerating to the water body that sprays like this, is favorable to improving the mixed effect. The water body is sprayed out from the spray pipe 7, enters the throat pipe 8 and is sprayed out from the top of the throat pipe 8. Wherein, the pipe diameter of the throat pipe 8 gradually increases along the direction close to the top of the tank body, so that the water body diffuses towards the periphery and is discharged.

In this embodiment, the top of the coagulation zone 1 may be open. Preferably, the top in district 1 that congeals can be sealed, sets up the sealed steel sheet at the top in district 1 that congeals this moment, and the water strikes with jar body top after 8 ejections of choke, is favorable to improving the effect of mixing the stirring. Under the action of gravity, the water body falls back downwards, and under the action of low pressure formed by water spraying of the spray pipe 7, the water body is sucked into the throat pipe 8 from a gap between the throat pipe 8 and the spray pipe 7, and the circular stirring is carried out again. For the whole coagulation area 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.

In the case of the flocculation zone 2, a spray pipe 7 is also arranged at the bottom of the flocculation zone 2, which spray pipe 7 sprays water vertically upwards. Meanwhile, the water collecting pipe 10 is arranged between the coagulation area 1 and the flocculation area 2, the arrangement position of the water collecting pipe 10 is not limited, and the water collecting pipe can be arranged at the lower part of the coagulation area 1 or at the middle part of the coagulation area 1 as long as the water injection operation into the flocculation area 2 can be realized.

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2; as shown in fig. 3, a coagulation water collecting chamber 16 is provided inside the coagulation area 1, the coagulation water collecting chamber 16 is formed by welding a coagulation water collecting plate 17 to the inner wall of the coagulation area 1, for example, the coagulation water collecting plate 17 may be made of two flat plates welded together at an obtuse angle, and the length of the coagulation water collecting plate 17 is consistent with the length of the coagulation area 1. Wherein, a certain interval is left between the flat plate arranged along the vertical direction in the coagulation water collecting plate 17 and the bottom wall of the coagulation area 1, so that the water in the coagulation area 1 enters the coagulation water collecting chamber 16. For example, a through hole may be provided on the partition between the coagulation zone 1 and the flocculation zone 2, and the water collecting pipe 10 is communicated with the coagulation water collecting chamber 16 through the through hole, so as to lead the water in the coagulation water collecting chamber 16 to the flocculation zone 2. The number of the water collecting chambers 16 can be two, and the two water collecting chambers 16 are symmetrically arranged around the throat 8 in the coagulation area 1. The water collecting pipe 10 is communicated with the two water coagulating and collecting chambers 16.

The part of the water collecting pipe 10 located in the flocculation zone 2 is directly communicated with the bottom of the spray pipe 7 located in the flocculation zone 2. The top water outlet of the spray pipe 7 is also sleeved with a throat pipe 8, the throat pipe 8 is vertically arranged and is spaced from the top of the tank body, and the pipe diameter of the throat pipe 8 is larger than that of the spray pipe 7. The spray pipe 7 is also communicated with a medicine feeding pipe 9, and the medicine enters the spray pipe 7 and then is mixed with the water body and then is sprayed upwards.

Wherein, the water distribution plate 18 can be arranged inside the coagulation water collection chamber 16, and the water distribution plate 18 can be welded on the inner wall of the coagulation area 1 or welded on the inner wall of the coagulation water collection plate 17. When there are a plurality of water distribution plates 18, the plurality of water distribution plates 18 may be arranged alternately in the vertical direction by staggered joints. For example, each water distribution plate 18 may be disposed in a horizontal direction. So set up, can increase into water resistance, make and thoughtlessly congeal the 16 even of intaking of collecting the hydroecium, on the other hand changes water conservancy direction and speed, is favorable to thoughtlessly congealing and mixes.

The hydraulic guide vane 19 can be arranged on the outer side of the coagulation water collecting plate 17, and the hydraulic guide vane 19 can incline towards the bottom of the coagulation area 1, so that when a water body moves downwards, the water body preferentially participates in the circulating stirring process through a gap between the throat pipe 8 and the spray pipe 7, and the rest water body enters the coagulation water collecting chamber 16.

Wherein, the dosing pipe 9 of the coagulation area 1 and the dosing pipe 9 of the flocculation area 2 can be respectively used for adding different medicines. For example, the added medicine may be polymeric alumina, polyacrylamide, polymeric ferric sulfate, and the like. The pipe diameter of the spray pipe 7 is gradually reduced along the direction close to the throat pipe 8, so that the sprayed water body can be accelerated, and the mixing effect can be improved. The water body is sprayed out from the spray pipe 7, enters the throat pipe 8 and is sprayed out from the top of the throat pipe 8. Wherein, the pipe diameter of the throat pipe 8 gradually increases along the direction close to the top of the tank body, so that the water body diffuses towards the periphery and is discharged.

For example, the top of the flocculation area 2 can be sealed, and the water body is sprayed out through the throat pipe 8 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, is sucked into the throat pipe 8 from the gap between the throat pipe 8 and the spray pipe 7 under the action of low pressure, and is subjected to the above-mentioned circular stirring again. For the whole flocculation area 2, the stirring and mixing of the water body and the medicine completely depend on the self kinetic energy of the water body, and an additional stirrer is not needed to be arranged for stirring. The jet pipe 7 in the flocculation area 2 forms a slight low pressure, so that the stirring of the internal circulation is not violent, the integrity of the floc is ensured, and the crushing of the alum floc is effectively reduced.

Wherein, the shower nozzle in 1 in the district of congealing and the shower nozzle in 1 in the district of congealing all form the low pressure because of the injection water, add pencil 9 under the condition that does not have the check valve, the internal water of jar can not flow backward to the medicinal cupping through adding pencil 9 and pollute the medicament.

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

The self-circulation high density suspension sludge filtration and sedimentation water purifier that this embodiment provided is provided with water accelerating device respectively in coagulating zone 1 and flocculation area 2, and this water accelerating device has spray tube 7 and choke 8, and the water inlet cover of choke 8 is established in spray tube 7 top, forms the water course with higher speed. After entering the spray pipe 7 from the water inlet of the reactor, at least one part of the inner diameter of the spray pipe 7 is reduced, so that the water body can be accelerated after flowing out of the spray pipe 7, and then is sprayed out from the top opening of the throat pipe 8 through the acceleration water channel and is dispersed all around. Under the action of gravity, the water body falls down, and under the action of low pressure, the water body enters the accelerating water channel through the interval between the throat pipe 8 and the spray pipe 7, and the water body and the medicines in the coagulation area 1 are stirred in a hydraulic circulation mode. One end of the water collecting pipe 10 is communicated with a coagulation water collecting chamber 16 in the coagulation area 1, the other end of the water collecting pipe is communicated with a spray pipe 7 in the flocculation area 2, the spray pipe 7 and a throat pipe 8 which are arranged in the flocculation area 2 are used for stirring water and medicines in the flocculation area 2 in a hydraulic circulation mode, and the stirred water can flow into a downstream sedimentation area 3 for subsequent purification. In the whole process, rely on the kinetic energy of water self to stir, need not to set up the agitator in coagulating zone 1 and flocculation district 2, reduced the electric load that whole self-loopa high density suspension mud strained heavy water purifier, be favorable to reducing the running cost, simultaneously, because of need not the maintenance or change the agitator for self-loopa high density suspension mud strains the whole maintenance burden of sinking water purifier and reduces.

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

In this embodiment, the position of the bottom near the baffle between flocculation area 2 and settling zone 3 can set up the opening, passes through district 11 as first flocculation to communicate flocculation area 2 and settling zone 3. For example, the first floc passing zone 11 may be an inverted V-shaped channel. The floc in the flocculation area 2 is retained to the maximum extent, and the strength of internal circulation stirring and the floc concentration are met; and the section of the water passing section of the inverted V-shaped channel entering the settling zone 3 is smaller, so that a larger flow velocity is generated, and the pressure difference generated by the velocity difference drives the upper mud-water mixture to descend to form a large vortex, so that the floc is in a suspended ascending state similar to a Brownian motion track.

A first floc collecting hopper 29 is arranged in the settling zone 3, and the first floc collecting hopper 29 can be a conical funnel-shaped structure, as shown in fig. 2, and an inclined plate and a vertical plate which are gradually inclined upwards are arranged at the right side of the settling zone 3, so that the conical funnel-shaped structure is formed. The top of the first flock collection hopper 29 is spaced from the top of the tank to allow the passage of water. When the water body carries flocs to flow through, the high-density flocs preferentially settle into the first floc collecting hopper 29, namely, the high-quality high-density flocs are recycled.

The upper reaches of first floc collecting hopper 29 in settling zone 3 still is provided with floc fluidized bed chamber 4, because the effect of the acceleration of water rises, in addition less floc constantly gathers together and forms great floc, forms a fluidized bed that floc concentration constantly increases in this region, and the little colloidal particle interception that will pass through gathers together, filters, can get rid of the most suspended colloid of water. After the flocs are gathered to a certain degree, the high-density flocs fall into the downstream first floc collecting hopper 29, and the low-density flocs pass through the first floc collecting hopper 29 and continue to be conveyed downstream along with the water body.

Wherein, can set up the floc circulating device and link to each other with the bottom of first floc collecting hopper 29, this floc circulating device can be the pipeline of spray tube 7 and first floc collecting hopper 29 in the direct intercommunication coagulation zone 1, relies on the low pressure to inhale high density floc into coagulation zone 1. Or when the device is started to debug or is used for treating low-turbidity water, the high-density flocs are pumped out by the pump body and then conveyed to the coagulation area 1, so that the amount of the flocs in the coagulation area 1 is increased. Wherein, the pipeline of the floc circulating device can be communicated with one side of the spray pipe 7, which is back to the dosing pipe 9. So set up for remaining medicament takes place the reaction once more in the flocculating constituent, makes medicament use amount greatly reduced, and the medicament effective rate of improvement has reduced the chemical agent in the water that discharges greatly and has remained, reduces environmental pollution.

Wherein, can set up the separation plate 26 of an slope in the bottom of first floc collecting hopper 29, this separation plate 26 is located one side that first floc collecting hopper 29 passes through district 11 towards first floc, and this separation plate 26's inclination can be adjusted as required, guarantees that the water can play the effect of sweeping to the bottom of floc fluidized bed chamber 4, prevents the floc deposit. On the other hand, the separation plate 26 changes the flow direction of the water body, increases the moving track quantity of the flocs in the floc fluidized bed chamber 4, and exerts the adsorption effect to the maximum extent.

Wherein, a first deflector 23 can be installed on the outer side wall of the first floc collecting hopper 29, the first deflector 23 is inclined towards the bottom direction of the settling zone 3, and the first deflector 23 is arranged on the side of the first floc collecting hopper 29 facing the flocculation zone 2. So set up, the floc strikes this first guide plate 23 and forces the floc to descend when rising, moreover, after the floc rises to the top, the reduction of rising velocity of flow also can force some flocs to slide down to the bottom of floc fluidized bed chamber 4 through separation plate 26 to balance the floc concentration in floc fluidized bed chamber 4. For example, the first baffle 23 can be provided with a through hole on the surface thereof, which is beneficial to timely exhausting gas and preventing the formation of air resistance and large bubbles from affecting the hydraulic effect.

Wherein, the inner wall in first floc collecting hopper 29 can weld the body of rod of intercrossing for supplementary separation high density floc can also play certain anti turbulent effect simultaneously.

A hydraulic channel 5 is also arranged in the settling zone 3, the hydraulic channel 5 is positioned at the downstream of the first floc collecting hopper 29, the hydraulic channel 5 is a vertical channel, a floc settling chamber 6 is arranged at the downstream of the hydraulic channel 5, and a second floc passing zone 12 is arranged at the bottom of the hydraulic channel 5 to communicate the hydraulic channel 5 with the floc settling chamber 6.

Wherein, a third deflector 25 can be arranged in the hydraulic channel 5, and the third deflector 25 is inclined to a direction close to the bottom of the first floc collecting hopper 29, for example, the inclination angle of the third deflector 25 can be consistent with the cone angle of the first floc collecting hopper 29; the downward flowing water body is guided by the third guide plate 25 to impact the inner angle of the first floc collecting hopper 29 and then enter the downstream floc settling chamber 6, which is beneficial to improving the mixing effect and the space utilization rate.

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2, and FIG. 5 is a cross-sectional view taken along line C-C of FIG. 2; as shown in fig. 4 and 5, a whole row of second floc collecting hoppers 30 may be provided for the floc settling chamber 6 along the length of the tank, for example, four second floc collecting hoppers 30 may be provided. For example, each second floc collecting hopper 30 is located on the center line along the length direction of the self-circulating high-density suspended sludge leaching water purifier, the bottom of each second floc collecting hopper 30 is connected with the bottom of the floc settling chamber 6, and each second floc collecting hopper 30 is vertically arranged and opens toward the top of the floc settling chamber 6. Above second floc collecting hopper 30, separation tube group 14 is provided, and separation tube group 14 includes a plurality of flow guide tubes. For example, the draft tube may be vertically disposed or may be obliquely disposed. The water body flows upwards after entering the floc settling chamber 6 from the hydraulic channel 5 through the second floc passing area 12, the larger flocs directly sink into the second floc collecting hopper 30, the other part of flocs and the water body sink into the second floc collecting hopper 30 after passing through the separation tube group 14, and the clean water flows out from the top water outlet of the separation tube group 14.

Wherein, separation nest of tubes 14 can be the mirror image and set up two, during the installation, can be with the help of the mounting panel of an inverted V type, weld respectively on the inner wall at the both ends of flocculus settling chamber 6 at the both ends of this mounting panel of an inverted V type earlier, then weld one of them separation nest of tubes 14 on one of them face of this mounting panel of an inverted V type, another separation nest of tubes 14 welds on another face of this mounting panel of an inverted V type. Wherein, can set up the through-hole in the contained angle department of this mounting panel of type of falling V to the exhaust of being convenient for.

Wherein, both sides of the second collecting hopper are provided with a second flow guiding plate 24, one end of the second flow guiding plate 24 is connected with the outer side wall of the second floc collecting hopper 30, and the other end extends towards the bottom wall of the floc settling chamber 6. For example, the angle between the second baffle 24 and the horizontal plane may be set according to the requirement, and is not limited in detail here. Wherein the second baffle 24 is spaced from the bottom of the floc settling chamber 6 to form a third floc passing zone 13. The area between the second guide plate 24, the outer side wall of the second floc collecting hopper 30 and the bottom of the floc settling chamber 6 forms a water distribution area 21, the water distribution area 21 is communicated with the second floc passing area 12, and water flowing out from the hydraulic channel 5 through the second floc passing area 12 directly enters the water distribution area 21 and then flows out through the third floc passing area 13. Wherein the cross-sectional shape of the second floc passing area 12 can be designed according to the cross-sectional shape of the water distribution area 21. Due to the existence of the second flow guide plate 24, the rising speed of water flow can be slowed down, and the trend that part of flocs quickly rise is blocked; and the symmetrically distributed second guide plates 24 are fully beneficial to the bottom space of the floc settling chamber 6, the third floc passing area 13 in the settling water distribution area is a longitudinal gap, the distance is small, water is distributed and fed for resistance, and the uniform water quality of the discharged water is ensured.

Wherein, can set up a plurality of speed reduction boards 20 at the lateral wall of second floc collecting hopper 30, this speed reduction board 20 can be located the well upper portion of second floc collecting hopper 30, also can install the inside wall at floc settling chamber 6, and the contained angle between every speed reduction board 20 and the horizontal plane can set up as required. By the arrangement, the water speed can be slowed down, the turbulence is reduced, the disturbance is reduced, and partial flocs can slide off; moreover, the air holes can be arranged on the decelerating plate 20 to discharge air in time, so that air resistance is avoided.

Wherein, the floc settling chamber 6 is also internally provided with a turbulence resisting plate 22, the turbulence resisting plate 22 is vertically arranged, and the length direction of the turbulence resisting plate 22 is consistent with the length direction of the floc settling chamber 6. For example, the two ends of the turbulence resisting plate 22 may be welded to the inner walls of the two ends of the floc settling chamber 6. So set up, can prevent that the rivers striking of horizontal direction from forming the turbulent flow, influence the effect of subsiding.

Wherein, the top of the coagulation area 1 and the flocculation area 2 are arranged in a closed shape. For example, a closed steel plate can be arranged at the top of the coagulation area 1, and the water body is sprayed out through the throat pipe 8 and then collides with the top of the tank body, so that the mixing and stirring effects are improved. For example, a closed steel plate can be arranged at the top of the flocculation area 2, and the water body is sprayed out through the throat pipe 8 and then collides with the top of the tank body, so that the mixing and stirring effects are improved.

Fig. 6 is a schematic structural diagram of a U-shaped pipe in a self-circulation high-density suspended sludge filtration and sedimentation water purifier provided in an embodiment of the present invention, as shown in fig. 6, wherein a clean water collecting device is further disposed in the floc settling chamber 6, and the clean water collecting device is located above the separation pipe group 14 and connected to a water outlet of the reactor. For example, the clear water collecting device can be a U-shaped pipe 15, an open end of the U-shaped pipe 15 is connected with the side wall of the floc settling chamber 6 close to the hydraulic channel 5, and the other end of the U-shaped pipe 15 opposite to the open end is connected with a water outlet of the reactor; the pipe wall of the U-shaped pipe 15 facing the top wall of the floc settling chamber 6 is provided with a plurality of through holes. After flowing out from the top opening of the separation pipe group 14, the water permeates into the U-shaped pipe 15 through the through hole on the U-shaped pipe 15 and finally flows out from the water outlet of the reactor. Wherein, the end of the U-shaped pipe 15 connected with the water outlet of the reactor is provided with an air inlet suitable for being connected with an external air inlet pipeline. By the arrangement, water can be fed with small resistance, water collection uniformity is guaranteed, and siphon water outlet is prevented from influencing hydraulic conditions near the separation pipe group 14.

Wherein, at least one of the coagulation zone 1, the flocculation zone 2 and the sedimentation zone 3 is provided with a sludge discharge device 27 for discharging sludge.

Wherein, at least one of the coagulation zone 1, the flocculation zone 2 and the sedimentation zone 3 is provided with an exhaust valve 28, so as to ensure that the internal hydraulic conditions meet the process requirements.

Wherein, the top of the tank body can be provided with a manhole so as to facilitate a maintainer to enter the tank body.

FIG. 7 is a schematic diagram of a clear water filter in a self-circulating high density suspended sludge sedimentation water purifier according to an embodiment of the present invention; FIG. 8 is a right side view of FIG. 1; fig. 9 is a top view of the filtering chamber of fig. 7, as shown in fig. 7, 8 and 9, wherein a clean water filter 31 may be provided downstream of the settling zone 3. The interior of the clean water filter 31 is divided into a clean water chamber 32, a filter chamber 33 and a suspension chamber 34 from top to bottom; the filtering chamber 33 comprises two independent chambers, each independent chamber is communicated with the water outlet of the reactor through a first pipeline 38, the bottom of each independent chamber is communicated with the top of the suspending chamber 34, and each independent chamber is communicated with the outside through a second pipeline 39; control valves 40 are provided on both the first and

second lines

38, 39. The bottom of the filtering chamber 33 is communicated with the top of the suspending chamber 34, and a filtering material 36 is arranged in the area between the filtering chamber 33 and the suspending chamber 34, for example, the filtering material 36 can be quartz sand; in addition, in order to improve the filtering effect, a plurality of filter caps 37 may be disposed below the filtering material 36, and the plurality of filter caps 37 may be uniformly arranged in an array. The suspension chamber 34 can communicate with the fresh water chamber 32 through a longitudinally disposed fresh water channel 35. Wherein, each independent chamber can share one clear water channel 35, and also can have independent clear water channels 35.

During the purging process, the control valve 40 on the second line 39 is closed and the control valve 40 on the first line 38 is opened. At this time, the water body enters the clean water chamber 32 through the U-shaped pipe 15, then the water body in the clean water chamber 32 enters the filter chamber through the first pipeline, the water body in the filter chamber is further purified by the filter material 36 and the filter cap 37 before entering the suspension chamber 34, then the water body enters the suspension chamber 34, and under the action of low pressure, the water body in the suspension chamber 34 can return to the clean water chamber 32 again through the clean water channel 35. The treated clean water can be discharged out of the tank body through the clean water outlet of the clean water chamber 32.

When in flushing, firstly, for convenience of description, two mutually independent chambers in the filtering chamber 33 are respectively denoted as a first chamber and a second chamber, and if the first chamber needs to be flushed, the control valve 40 on the first pipeline 38 in the first chamber can be closed, and the control valve 40 on the second pipeline 39 in the first chamber can be opened; at the same time, the control valve 40 on the first pipeline 38 in the chamber II can be opened, and the control valve 40 on the second pipeline 39 in the chamber II can be closed; at the moment, the second chamber carries out normal filtering work on the water body. The water in the clean water chamber 32 reversely flows into the first chamber through the clean water channel 35 and then is discharged through the second pipeline 39 in the first chamber, and in the process, the filter material 36 and impurities on the filter cap 37 in the first chamber can be washed away. Similarly, chamber two can be flushed.

Fig. 10 is a schematic structural diagram of a self-circulation high-density suspended sludge leaching and settling water purifier provided in another embodiment of the present invention, as shown in fig. 10, in another embodiment, the second floc passing area 12 between the floc settling chamber 6 and the hydraulic channel 5 can be replaced by a water pipe 41, and the water pipe 41 connects the floc settling chamber 6 and the hydraulic channel 5 and is suitable for leading the water in the hydraulic channel 5 into the floc settling chamber 6. Wherein, in order to improve the water delivery effect and ensure the water pressure balance everywhere, the pipe diameter of the water delivery pipe 41 is gradually reduced along the delivery direction of the water body. Wherein, one end of the water pipe 41 far away from the hydraulic channel 5 can be a closed structure, and the pipe wall of the water pipe 41 is provided with water spray holes.

FIG. 11 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in one embodiment of the present invention; FIG. 12 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in yet another embodiment of the present invention; FIG. 13 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in yet another embodiment of the present invention; as shown in fig. 11, 12 and 13, wherein bent plates may be placed in the first floe-passing zone 11 to create different water flow trajectories. FIG. 14 is a schematic illustration of a first floc passing zone in a self-circulating high density suspended sludge filtration and sedimentation water purifier provided in yet another embodiment of the present invention; as shown in fig. 14, first floc passing zone 11 may also be provided with a bent pipe to form different water flow trajectories. Wherein, the water inlet modes can be selected according to the requirements.

The filter chamber 33 in this embodiment can be two or more, and can be backwashed and filtered simultaneously, and the filter chamber 33 also can be only one, and the back end increases the clear water tank and backwashes alone.

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

To sum up, the self-loopa high density suspension mud strains heavy water purifier that this embodiment provided adopts the inside atress of horizontal cylinder sled dress structure more even, and the water conservancy condition of cylindric jar of body is better, wholly can do greatly, is favorable to improving the throughput of single seat equipment.

In summary, the self-circulation high-density suspended sludge filtration and sedimentation water purifier provided in the above embodiments has the water distribution plate disposed inside the coagulation water collection chamber, so that the water inlet resistance can be increased, the water inlet of the coagulation water collection chamber is uniform, and the hydraulic direction and speed are changed to facilitate coagulation and mixing.

According to the self-circulation high-density suspended sludge filtering and settling water purifier provided by the embodiment, the hydraulic guide vanes are arranged on the outer side of the coagulation water collecting plate, so that when a water body moves downwards, the water body preferentially participates in the circulation stirring process through a gap between the throat pipe and the spray pipe, and the rest water body enters the coagulation water collecting chamber.

In the self-circulation high-density suspended sludge filtering and settling water purifier provided by the embodiment, the first floc passing area is designed into the inverted V-shaped channel, so that the flocs in the flocculation area are retained to the maximum extent, and the strength of internal circulation stirring and the concentration of the flocs are met; and the section of the water passing section of the inverted V-shaped channel entering the settling zone is smaller, so that a larger flow velocity is generated, and the pressure difference generated by the velocity difference drives the upper mud-water mixture to descend to form a large vortex, so that the floc is in a suspended ascending state similar to a Brownian motion track.

The self-circulation high-density suspended sludge filtering and settling water purifier provided in the embodiment has the advantages that the inclined separation plate is arranged at the bottom of the first floc collecting hopper, so that the water body can be enabled to sweep the bottom of the floc fluidized bed chamber, and the floc deposition is prevented. On the other hand, the separation plate changes the flow direction of the water body, increases the motion trail quantity of flocs in the floc fluidized bed chamber, and exerts the adsorption effect to the maximum extent.

In the self-circulation high-density suspended sludge filtering and settling water purifier provided in the above embodiment, the first flow guide plate is installed on the outer side wall of the first floc collecting hopper, and when the flocs rise, the flocs are forced to fall by striking the first flow guide plate, and after the flocs rise to the top, the rising flow velocity is reduced, so that part of the flocs can also be forced to slide down to the bottom of the floc fluidized bed chamber through the separation plate, so as to balance the floc concentration in the floc fluidized bed chamber; and the plate surface of the first guide plate is provided with the through holes, so that gas can be discharged in time, and the formation of air resistance and large bubbles can be prevented, and the hydraulic effect can be prevented from being influenced.

The self-circulation high-density suspended sludge filtering and settling water purifier provided in the embodiment is characterized in that a third guide plate is arranged in the hydraulic channel, and a water body flowing downwards strikes the inner angle of the first floc collecting hopper under the guidance of the third guide plate and then enters the downstream floc settling chamber, so that the mixing effect and the space utilization rate are improved.

According to the self-circulation high-density suspended sludge filtering and settling water purifier provided by the embodiment, the plurality of speed reduction plates are arranged on the outer side wall of the second floc collecting hopper, so that the water speed can be reduced, the turbulence can be reduced, the disturbance can be reduced, and partial flocs can slide off; in addition, the air holes can be formed in the speed reduction plate, so that air can be discharged in time, and air resistance is avoided.

The self-circulation high-density suspended sludge filtering and settling water purifier disclosed in the embodiment adopts a horizontal cylindrical skid-mounted structure, the internal stress is more uniform, the hydraulic condition of the cylindrical tank body is better, the whole body can be large, and the treatment capacity of single-seat equipment is favorably improved.

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

In this application, high density refers to suspended sludge in excess of 4g/L in the body of water.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. The utility model provides a self-loopa high density suspension mud strains and sinks water purifier which characterized in that includes:

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

the coagulation water collecting chamber (16) is arranged in the coagulation area (1), and a water inlet of the coagulation water collecting chamber (16) is communicated with the coagulation area (1);

one end of the water collecting pipe (10) is communicated with the coagulation water collecting chamber (16) and is suitable for collecting the water body in the coagulation water collecting chamber (16);

the flocculation area (2) is arranged at the downstream of the coagulation area (1), and the other end of the water collecting pipe (10) enters the flocculation area (2);

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

a nozzle (7) adapted to be connected to the other end of the reactor water inlet or the water collection pipe (10), at least a portion of the inner diameter of the nozzle (7) decreasing in the direction of flow of the body of water;

the throat pipe (8) comprises a throat pipe (8) water inlet and a throat pipe (8) water outlet, the throat pipe (8) water inlet is covered above the spray pipe (7), and an acceleration water channel is formed between the spray pipe (7) and the throat pipe (8);

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

and the clear water filter (31) is arranged at the downstream of the settling zone (3), and the clear water filter (31) is communicated with the water outlet of the reactor.

2. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 1,

the interior (31) of the clear water filter is divided into a clear water chamber (32), a filter chamber (33) and a suspension chamber (34) from top to bottom;

the filter chamber (33) is communicated with the water outlet of the reactor, the bottom of the filter chamber (33) is communicated with the top of the suspension chamber (34), and a filter material (36) is arranged in the area between the filter chamber (33) and the suspension chamber (34);

the suspension chamber (34) is communicated with the clear water chamber (32) through a clear water channel (35) which is longitudinally arranged.

3. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 2,

a plurality of filtering caps (37) are arranged between the filtering chamber (33) and the buffering chamber (34), and the filtering caps (37) are uniformly arranged in an array.

4. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 2,

the filter chamber (33) comprises two independent chambers, each independent chamber is communicated with the water outlet of the reactor through a first pipeline (38), the bottom of each independent chamber is communicated with the top of the suspension chamber (34), and each independent chamber is communicated with the outside through a second pipeline (39);

and the first pipeline (38) and the second pipeline (39) are both provided with control valves (40).

5. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 1,

at least one part of the spray pipe (7) is arranged in a conical shape along the flowing direction of the water body.

6. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 5,

at least one part of the area of the throat pipe (8) corresponding to the spray pipe (7) is arranged in a conical shape.

7. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 1,

the inner wall of the coagulation area (1) is provided with a coagulation water collecting plate (17), the coagulation water collecting plate (17) and the inner wall of the coagulation area (1) form a coagulation water collecting chamber (16), and a water inlet of the coagulation water collecting chamber (16) is located at the bottom of the coagulation water collecting chamber (16) and is suitable for enabling a water body in the coagulation area (1) to enter the coagulation water collecting chamber (16).

8. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 1,

a first floc passing area (11) is arranged between the flocculation area (2) and the sedimentation area (3), a water body enters the sedimentation area (3) through the first floc passing area (11), at least one first floc collecting hopper (29) is arranged in the sedimentation area (3), and part of the water body enters the first floc collecting hopper (29);

at least one floc circulation device, one end of which acts in the first floc collection hopper (29) and the other end of which is connected to the jet pipe (7) of at least one water acceleration device.

9. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 8,

the settling zone (3) further comprises a floc fluidized bed chamber (4) located upstream of the first floc collection hopper (29).

10. The self-circulating high-density suspended sludge filtration-sedimentation water purifier as claimed in claim 8,

the settling zone (3) further comprises a hydraulic channel (5) located downstream of the first floc collection hopper (29).

11. The self-circulating high density suspended sludge filtration-precipitation water purifier of claim 10,

the settling zone (3) further comprises a floc settling chamber (6) arranged at the downstream of the hydraulic channel (5), a second floc passing zone (12) is arranged between the floc settling chamber (6) and the hydraulic channel (5) and is suitable for enabling a water body in the hydraulic channel (5) to enter the floc settling chamber (6).

12. The self-circulating high density suspended sludge filtration-precipitation water purifier of claim 11,

a separation tube group (14) and a plurality of second floc collecting hoppers (30) are arranged in the floc settling chamber (6);

the separation pipe group (14) is arranged above the floc settling chamber (6), and the separation pipe group (14) comprises a plurality of guide pipes;

a plurality of second floc collecting hoppers (30) are sequentially arranged below the floc settling chamber (6) along the length direction of the floc settling chamber (6), and each opening of the second floc collecting hoppers (30) faces the separation tube group (14).

13. The self-circulating high density suspended sludge filtration-precipitation water purifier of claim 12,

the floc settling chamber also comprises a plurality of second guide plates (24) arranged along the height direction, wherein the second guide plates (24) are arranged on the outer side of the second floc collecting hopper (30), one end of each second guide plate is connected with the outer side wall of the second floc collecting hopper (30), and the other end of each second guide plate extends towards the bottom wall of the floc settling chamber (6);

a space is reserved between the second flow guide plate (24) and the bottom wall of the floc settling chamber (6) to form a third floc passing area (13).

14. The self-circulating high density suspended sludge filtration-precipitation water purifier of claim 13,

the second flow guide plate (24) comprises two flow guide plates which are symmetrically arranged at two sides of the second floc collecting hopper (30).

15. The self-circulating high density suspended sludge filtration-precipitation water purifier of claim 13,

the second floc passing zone (12) is located below the floc settling chamber (6);

the second guide plate (24), the outer side wall of the second floc collecting hopper (30) and the area between the bottoms of the floc settling chambers (6) form a water distribution area (21), and the second floc passing area (12) is communicated with the water distribution area (21).

16. The self-circulating high density suspended sludge filtration-precipitation water purifier of claim 15,

the floc settling chamber (6) is also internally provided with a turbulence resisting plate (22), the turbulence resisting plate (22) is vertically arranged, and the length direction of the turbulence resisting plate (22) is consistent with that of the floc settling chamber (6).

17. The self-circulating high density suspended sludge filtration-precipitation water purifier of claim 12,

and a clear water collecting device is also arranged in the floc settling chamber (6), is positioned above the separation pipe group (14) and is connected with the water outlet of the reactor.