CN209630689U - A kind of clarifying basin for sewage treatment - Google Patents

Abstract

The utility model relates to a kind of clarifying basins for sewage treatment, including at least reaction zone and sedimentation basin, sedimentation basin further includes connecting rod and for precipitating alumen ustum and one end is solidly connected to inclined plate in connecting rod, the other end of inclined plate is solidly connected to sedimentation basin inner wall, and one end far from inclined plate is provided with the rope for fixed connecting rod in connecting rod.Inclined plate includes at least upper plate body, middle plate body and the lower body being rotatablely connected in the way of being relatively rotatable to each other to each other, under conditions of rope applies pulling force to connecting rod, the angle β between angle α and middle plate body and lower body between upper plate body and middle plate body is obtuse angle.The utility model enables suspended impurity in water to be precipitated in inclined plate by the way that multiple segmented inclined plates are arranged, and bigger than traditional inclined-plate clarifying basin desilting area, deposition efficiency is higher；And the aperture position of the isolation board between setting differential responses pond is different, improves the extent of reaction between flocculating agent and flocculant and sewage, improves coagulation efficiency.

Description

A kind of clarifying basin for sewage treatment

Technical field

The utility model relates to sewage treatment field, a kind of especially clarifying basin for sewage treatment.

Background technique

In existing water treatment technology, sewage treatment plant mostly uses coagulating sedimentation mode to be handled, therefore Coagulation-sedimentation equipment is the important link of greasy dirt and water separation in water treatment technology, and operation conditions directly affects effluent quality.

With the continuous development of society, in building, agricultural, traffic, the energy, petrochemical industry, environmental protection, urban landscape, medical treatment, food and drink A large amount of sewage is produced in equal fields, these sewage how is recycled, turns waste into wealth, to generate good economic benefit, always Since be all project that researcher is continually striving to.The regeneration of sewage is that human ecological environment protection and solution water resource are deficient Weary important measure.Cities and towns are the main sources that sewage generates, and general town sewage includes sanitary sewage, industrial wastewater and runoff Sewage, generally containing the solid impurity, organic matter, inorganic matter etc. for being largely difficult to precipitate in water.As country is to sewage discharge mark Quasi- continuous improvement, apparatus structure used by existing processing technique is complicated, takes up a large area, cost of investment is high, causes dirt Water process operating cost increases, and there are equipment investment height, energy consumption is high, takes up a large area and problem that operating cost is high.

Chinese patent (Publication No. CN205387512U) discloses a kind of wastewater treatment equipment, includes at least: successively The water collecting settling pond of connection, reaction flocculation basin and neutralize clarifying basin, water collecting settling pond be set to below ground, be set to ground it is more Waste water flume connection in road is respectively equipped with the first blender and second being driven by motor in and in clarifying basin in reaction flocculation basin Blender is connected between water collecting settling pond and reaction flocculation basin by the first draining pump, is reacted and is led between flocculation basin and clarifying basin Cross the connection of the second draining pump.The utility model is convenient and practical, by water collecting settling pond, reacts flocculation basin and neutralizes clarifying basin progress Three step purified treatments effectively remove solid impurity, organic matter, inorganic matter in waste water respectively, adjust acid-base balance degree.But The unresolved coagulation efficiency and deposition efficiency for how effectively improving existing sewage-treatment plant of the device structure of the utility model Low problem.Therefore, it is a kind of improved to be that overcome the deficiencies in the prior art provides for technical problem to be solved in the utility model Clarifying basin for sewage treatment.

Utility model content

For the deficiencies of the prior art, the utility model provides a kind of clarifying basin for sewage treatment, includes at least Reaction zone and sedimentation basin, the sedimentation basin further include connecting rod and for precipitating alumen ustum and one end is solidly connected in the connecting rod Inclined plate, the other end of the inclined plate are solidly connected to the sedimentation basin inner wall, and one end far from the inclined plate is arranged in the connecting rod There is the rope for fixed connecting rod.Wherein, the inclined plate is included at least and is rotated in the way of being relatively rotatable to each other to each other The upper plate body of connection, middle plate body and lower body, under conditions of the rope applies pulling force to the connecting rod, the upper plate body The angle β between angle α and the middle plate body and the lower body between the middle plate body is obtuse angle.

According to a preferred embodiment, the reaction zone separate between including through multiple isolation boards at least three Reaction tank, wherein first isolation board, second isolation board, the third isolation board and the 4th isolation board are along institute State the length direction of reaction zone successively arranged for interval in the reaction zone.

According to a preferred embodiment, it is anti-that the reaction zone includes at least the first reaction tank, the second reaction tank and third Ying Chi is successively isolated through described first respectively between first reaction tank, second reaction tank and the third reaction tank Plate and second isolation board separate.

According to a preferred embodiment, the third reaction tank through the third isolation board and the 4th isolation board with The sedimentation basin connection, wherein the third isolation board and the 4th isolation board are disposed adjacent one another.

According to a preferred embodiment, the clarifying basin further includes being set to above the reaction zone and having at least one The chemicals dosing plant of chemical feed pipe, it is described to include at least to chemical feed pipe for loading the first chemical feed pipe of pH adjusting agent, mixed for loading Coagulate the second chemical feed pipe of agent and the third chemical feed pipe for loading flocculant.

According to a preferred embodiment, first chemical feed pipe, second chemical feed pipe and the third chemical feed pipe point First water inlet pipe, second reaction tank and the third reaction tank are not connected to through corresponding dosage valve.

According to a preferred embodiment, the bottom of the sedimentation basin is provided with the mud-removing bucket for collecting sludge, described Sedimentation basin further includes the mud pit below the sedimentation basin, wherein the mud pit is through the first elevator pump and the spoil disposal The bottom of bucket is connected.

According to a preferred embodiment, the clarifying basin further includes several mechanical stirring devices and with described first The former pond of reaction tank connection,

Wherein, the former pond is connected to through the second elevator pump with one end of the first water inlet pipe, first water inlet pipe it is another One end is connected to the water inlet of first reaction tank, and first reaction tank is through first at the first isolation board upper opening Conveyance conduit is connected to second reaction tank, and second reaction tank is through the second conveying at the second isolation board upper opening Pipeline is connected to the third reaction tank, and first reaction tank, second reaction tank and the third reaction tank are set respectively It is equipped with the mechanical stirring device positioned at respective pond body top.

The clarifying basin includes the chemicals dosing plant for being set to above the reaction zone and having at least one chemical feed pipe, described to give Chemical feed pipe is included at least for loading the first chemical feed pipe of pH adjusting agent, the second chemical feed pipe for loading coagulant and for filling The third chemical feed pipe of flocculant is carried, first chemical feed pipe, second chemical feed pipe and the third chemical feed pipe pass through respectively respectively Corresponding dosage valve is connected to first water inlet pipe, second reaction tank and the third reaction tank.

The third reaction tank sinks through the third isolation board disposed adjacent one another and the 4th isolation board with described The connection of shallow lake pond, the bottom of the sedimentation basin are provided with the mud-removing bucket for collecting sludge, and the sedimentation basin further includes set on described Mud pit below sedimentation basin, the mud pit are connected through the first elevator pump with the bottom of the mud-removing bucket.

According to a preferred embodiment, the isolation board is included at least each other parallel and perpendicular to reaction tank bottom surface The first isolation board, third isolation board, the second isolation board and the 4th isolation board, the opening of the first isolation board and third isolation board Opening is located at the first side of reaction tank, and the opening of the second isolation board is located at second side of reaction tank with the opening of the 4th isolation board, First side and second side are located at the reaction tank along the upper side and lower side of its short transverse.

Wherein, on the third isolation board far from the 4th isolation board one end be equipped with deflector, the deflector by Arc limits and its center of gravity is located at below the 4th isolation board.

Clarifying basin provided by the utility model at least has the advantage that

(1) the utility model enables suspended impurity in water to be sunk in inclined plate by the way that multiple segmented inclined plates are arranged It forming sediment, alumen ustum is accumulated into mud in inclined plate bottom side surface after impact several times between inclined plate, mud bucket then is sunk to by gravity, Bigger than traditional inclined-plate clarifying basin desilting area, deposition efficiency is higher；And the pulling force to inclined plate can be removed by rope It is put to vertical position, is convenient for inclined plate spoil disposal.

(2) the utility model relationship different by the aperture position of the isolation board between setting differential responses pond, is improved The extent of reaction between flocculating agent and flocculant and sewage, and then coagulation efficiency is improved, make to mix or react more abundant, energy Enough reach it is effective play sodium carbonate-sodium hydroxide emollescence, reduce hardness and total alkalinity at the same reduce COD, colloid and The functions such as suspended matter meet subsequent double films and are required；And by the way that adjacent and different aperture position third isolation board is arranged With the 4th isolation board so that the liquid into sedimentation basin is from top to bottom vertical 180 ° of movements again from the bottom to top, so that muddy water point It is more thorough from effect, also more difficult race alumen ustum；Clarifying basin provided by the utility model is scientific and reasonable for structure, apparatus body setting Multiple water treatment ponds, sewage treating efficiency are high.

Detailed description of the invention

Fig. 1 is the simplification structure connection diagram of the preferred clarifying basin of the utility model.

Reference signs list

1: reaction zone 2: 3: the first isolation board of sedimentation basin

4: 5: the second isolation board of third isolation board, 6: the first side

7: second side 8: 9: the first reaction tank of deflector

10: the second reaction tanks 11: third reaction tank 12: chemicals dosing plant

13: the first chemical feed pipe, 14: the second chemical feed pipe 15: third chemical feed pipe

16: dosage valve 17: mud-removing bucket 18: mud pit

19: the first elevator pumps 20: mechanical stirring device 21: former pond

22: connecting rod 23: rope 24: upper plate body

25: middle plate body 26: 27: the four isolation board of lower body

28: the second elevator pump, 29: the first water inlet pipe, 30: the first conveyance conduit

31: the second conveyance conduits

Specific embodiment

The utility model is described in detail with reference to the accompanying drawing.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, merely to just In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in the present invention.

In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above " One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only Indicate that first feature horizontal height is less than second feature.

As shown in Figure 1, clarifying basin includes at least reaction zone and sedimentation basin 2, sedimentation basin 2 further includes connecting rod 22 and for sinking Shallow lake alumen ustum and one end are solidly connected to the inclined plate in connecting rod 22, and the other end of inclined plate is solidly connected to 2 inner wall of sedimentation basin, remote in connecting rod 22 One end from inclined plate is provided with the rope 23 for fixed connecting rod 22.Wherein, inclined plate includes at least to each other according to being capable of phase Upper plate body 24, middle plate body 25 and the lower body 26 being rotatablely connected to the mode of rotation apply pulling force to connecting rod 22 in rope 23 Under conditions of, the angle β between angle α and middle plate body 25 and lower body 26 between upper plate body 24 and middle plate body 25 is blunt Angle.

Preferably, sedimentation basin 2 include for precipitating alumen ustum and one end is solidly connected to multiple inclined plates in connecting rod 22, it is multiple tiltedly The other end of plate is solidly connected to 2 inner wall of sedimentation basin along the length direction of sedimentation basin 2 in the way of being adjacently positioned.Multiple inclined plates are set It is equipped with and is accumulated into mud in inclined plate bottom side surface after impact several times between multiple inclined plates conducive to alumen ustum, then rely on gravity Sink to mud bucket.

Preferably, the connection type between upper plate body 24, middle plate body 25 and lower body 26 can use similar hinge The foldable rotation moving axis of connection is attached, make between plate body can pivoting, it is detachable to each other and be easily installed.

According to a preferred embodiment, reaction zone 1 include separate each other through multiple isolation boards it is at least three anti- Ying Chi, wherein the length direction of the first isolation board 3, the second isolation board 5, third isolation board 4 and the 4th isolation board 27 along reaction zone Successively arranged for interval is in reaction zone 1.

According to a preferred embodiment, it is anti-that reaction zone 1 includes at least the first reaction tank 9, the second reaction tank 10 and third Pond 11 is answered, successively respectively through the first isolation board 3 and second between the first reaction tank 9, the second reaction tank 10 and third reaction tank 11 Isolation board 5 separates.

According to a preferred embodiment, third reaction tank 11 is through third isolation board 4 and the 4th isolation board 27 and sedimentation basin 2 connections, wherein third isolation board 4 and the 4th isolation board 27 are disposed adjacent one another.

According to a preferred embodiment, clarifying basin further includes being set to 1 top of reaction zone and having at least one chemical feed pipe Chemicals dosing plant 12, to chemical feed pipe include at least for loading the first chemical feed pipe 13 of pH adjusting agent, for loading coagulant Second chemical feed pipe 14 and third chemical feed pipe 15 for loading flocculant.

According to a preferred embodiment, the first chemical feed pipe 13, the second chemical feed pipe 14 and third chemical feed pipe 15 are respectively through each Self-corresponding dosage valve 16 is connected to the first water inlet pipe 29, the second reaction tank 10 and third reaction tank 11.

According to a preferred embodiment, the bottom of sedimentation basin 2 is provided with the mud-removing bucket 17 for collecting sludge, precipitating Pond 2 further includes the mud pit 18 set on 2 lower section of sedimentation basin, wherein bottom of the mud pit 18 through the first elevator pump 19 and mud-removing bucket 17 Portion is connected.

According to a preferred embodiment, clarifying basin further include several mechanical stirring devices 20 and with the first reaction tank The former pond 21 of 9 connections,

Wherein, former pond 21 is connected to through the second elevator pump 28 with one end of the first water inlet pipe 29, the first water inlet pipe 29 it is another One end is connected to the water inlet of the first reaction tank 9, and the first reaction tank 9 is through the first conveyance conduit at 3 upper opening of the first isolation board 30 are connected to the second reaction tank 10, and the second reaction tank 10 is through the second conveyance conduit 31 and third at 5 upper opening of the second isolation board Reaction tank 11 is connected to, and the first reaction tank 9, the second reaction tank 10 and third reaction tank 11 are respectively arranged with positioned at respective pond body top Mechanical stirring device 20.

Clarifying basin includes set on 1 top of reaction zone and with the chemicals dosing plant 12 of at least one chemical feed pipe, extremely to chemical feed pipe Include less for loading the first chemical feed pipe 13 of pH adjusting agent, the second chemical feed pipe 14 for loading coagulant and for load wadding The third chemical feed pipe 15 of solidifying agent, the first chemical feed pipe 13, the second chemical feed pipe 14 and third chemical feed pipe 15 are respectively through corresponding dose Amount valve 16 is connected to the first water inlet pipe 29, the second reaction tank 10 and third reaction tank 11.

Third reaction tank 11 is connected to through third isolation board 4 and the 4th isolation board 27 disposed adjacent one another with sedimentation basin 2, is sunk The bottom in shallow lake pond 2 is provided with the mud-removing bucket 17 for collecting sludge, and sedimentation basin 2 further includes the mud pit set on 2 lower section of sedimentation basin 18, mud pit 18 is connected through the first elevator pump 19 with the bottom of mud-removing bucket 17.

According to a preferred embodiment, isolation board is included at least each other parallel and perpendicular to the of reaction tank bottom surface One isolation board 3, third isolation board 4, the second isolation board 5 and the 4th isolation board 27, the opening and third isolation board of the first isolation board 3 4 opening is located at the first side 6 of reaction tank, and the opening of the second isolation board 5 is located at reaction tank with the opening of the 4th isolation board 27 Second side 7, the first side 6 and second side 7 are located at the upper side and lower side of reaction tank along its short transverse.

Wherein, one end on third isolation board 4 far from the 4th isolation board 27 is equipped with deflector 8, and deflector 8 is limited by arc And its center of gravity is located at 27 lower section of the 4th isolation board.

For ease of understanding, will application the utility model clarifying basin precipitate clear concrete technology flow process carry out it is as follows It discusses:

Raw water in former pond 21 enters the first reaction tank 9 by the first water inlet pipe 29 through the second elevator pump 28, for filling The first chemical feed pipe 13 for carrying pH adjusting agent is connected to through pipeline with the first water inlet pipe 29, and raw water and pH adjusting agent are in mechanical stirring device Stirring action under be sufficiently mixed, the raw water after adjusting pH is defeated through the first conveyance conduit 30 at 3 upper opening of the first isolation board Enter the second reaction tank 10, the aperture position by the way that the first isolation board 3 is arranged is located at the upside of reaction zone, convenient for for loading coagulation Second chemical feed pipe 14 of agent is connected to through pipeline with the first transfer passage 30, can reach better medicament mixing and reaction effect. Raw water and coagulant after adjusting pH come into full contact under the stirring action of mechanical stirring device, and further progress flocculation is anti- It answers, forms a large amount of flocculation group.Enter by the water that produces of coagulation section through the second transfer passage 31 at 5 upper opening of the second isolation board Third reaction tank 11, the third chemical feed pipe 15 for loading flocculant are connected to through pipeline with third reaction tank 11, flocculant and warp Cross the production water of coagulation section mechanical stirring device mix slowly make under effect above-mentioned a large amount of flocculations roll into a ball to be formed it is big and closely knit Alumen ustum, since the biggish alumen ustum of formation is easy to be destroyed by the impact force of working fluid, by the opening that the second isolation board 5 is arranged The downside that position is located at reaction zone effectively avoids having formed alumen ustum to be destroyed by external force.

It is heavy that sewage with a large amount of alumen ustum enters through adjacent and different aperture position third isolation board and the 4th isolation board Shallow lake pond 2, so that sewage from top to bottom vertical 180 ° of movements again from the bottom to top, so that mud-water separation effect is more thorough, do not allow more yet Easily run alumen ustum；And one end of the 4th isolation board 27 is equipped with deflector 8, and deflector 8 is limited by arc and its center of gravity is located at the 4th 27 lower section of isolation board, can effectively slow down the flow velocity that the sewage with alumen ustum enters sedimentation basin 2, be further reduced and formed alumen ustum Destruction.Enough multiple sloping plate deposition areas are provided in sedimentation basin 2, each inclined plate includes at least to each other according to energy Upper plate body 24, middle plate body 25 and the lower body 26 that the mode enough relatively rotated is rotatablely connected apply connecting rod 22 in rope 23 Under conditions of pulling force, the angle β between angle α and middle plate body 25 and lower body 26 between upper plate body 24 and middle plate body 25 is Obtuse angle, the alumen ustum be conducive in sewage precipitate on inclined plate, and are removing the pulling force applied to connecting rod 22 to rope 23 Under the conditions of, angle α and angle β increase so that less parallel between upper plate body 24, middle plate body 25 and lower body 26, passes through shake rope Rope just can be precipitated in mud-removing bucket 17 easily by the alumen ustum to precipitate along inclined plate slide downward, and pass through the first elevator pump 19 collect to mud pit 18, obtain the production after precipitating is clarified into Treatment of Sludge flow processing, while on the top of sedimentation basin 2 Water enters next process to be processed through overflow pipe.

It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can be in the utility model Various solutions are found out under the inspiration of disclosure, and these solutions also belong to the open scope of the utility model simultaneously It falls within the protection scope of the utility model.It will be understood by those skilled in the art that the utility model specification and its attached drawing It is illustrative and not constitutes limitations on claims.The protection scope of the utility model is by claim and its equivalent It limits.

Claims (10)

1. a kind of clarifying basin for sewage treatment includes at least reaction zone (1) and sedimentation basin (2), which is characterized in that described heavy Shallow lake pond (2) includes at least connecting rod (22) and for precipitating alumen ustum and one end is solidly connected to inclined plate on the connecting rod (22), institute The other end for stating inclined plate is solidly connected to the sedimentation basin (2) inner wall, and one end far from the inclined plate is arranged on the connecting rod (22) There is the rope (23) for fixed connecting rod (22),

Wherein, the inclined plate include at least be rotatablely connected in the way of being relatively rotatable to each other to each other upper plate body (24), in Plate body (25) and lower body (26), under conditions of the rope (23) applies pulling force to the connecting rod (22), the upper plate The angle between angle (α) and the middle plate body (25) and the lower body (26) between body (24) and the middle plate body (25) (β) is obtuse angle.

2. clarifying basin according to claim 1, characterized in that the reaction zone (1) includes each other through multiple isolation Plate separate at least three reaction tanks, wherein the first isolation board (3), the second isolation board (5), third isolation board (4) and the 4th every From plate (27), along the length direction of the reaction zone (1), successively arranged for interval is interior in the reaction zone (1).

3. clarifying basin according to claim 2, characterized in that the reaction zone (1) include at least the first reaction tank (9), Second reaction tank (10) and third reaction tank (11), first reaction tank (9), second reaction tank (10) and the third Successively separate respectively through first isolation board (3) and second isolation board (5) between reaction tank (11).

4. clarifying basin according to claim 3, characterized in that the third reaction tank (11) is through the third isolation board (4) be connected to the 4th isolation board (27) with the sedimentation basin (2), wherein the third isolation board (4) and the described 4th every It is disposed adjacent one another from plate (27).

5. clarifying basin according to claim 4, characterized in that far from the 4th isolation on the third isolation board (4) One end of plate (27) is equipped with deflector (8), and the deflector (8) is limited by arc and its center of gravity is located at the 4th isolation board (27) lower section.

6. clarifying basin according to claim 5, characterized in that the clarifying basin further includes being set on the reaction zone (1) Side and the chemicals dosing plant (12) at least one chemical feed pipe, the chemical feed pipe include at least first for loading pH adjusting agent Chemical feed pipe (13), the second chemical feed pipe (14) for loading coagulant and the third chemical feed pipe (15) for loading flocculant.

7. clarifying basin according to claim 6, characterized in that first chemical feed pipe (13), second chemical feed pipe (14) and the third chemical feed pipe (15) is connected to the first water inlet pipe (29), described through corresponding dosage valve (16) respectively Two reaction tanks (10) and the third reaction tank (11).

8. clarifying basin according to claim 7, characterized in that the bottom of the sedimentation basin (2) is provided with for collecting dirt The mud-removing bucket (17) of mud, the sedimentation basin (2) further include the mud pit (18) below the sedimentation basin (2), wherein described Mud pit (18) is connected through the first elevator pump (19) with the bottom of the mud-removing bucket (17).

9. clarifying basin according to claim 8, characterized in that the clarifying basin further includes several mechanical stirring devices (20) and with first reaction tank (9) former pond (21) being connected to,

Wherein, the former pond (21) is connected to through the second elevator pump (28) with one end of the first water inlet pipe (29), described first into The other end of water pipe (29) is connected to the water inlet of first reaction tank (9), first reaction tank (9) through described first every It is connected to from the first conveyance conduit (30) at plate (3) upper opening with second reaction tank (10), second reaction tank (10) It is connected to through the second conveyance conduit (31) at the second isolation board (5) upper opening with the third reaction tank (11), described One reaction tank (9), second reaction tank (10) and the third reaction tank (11) are respectively arranged with positioned at respective pond body top The mechanical stirring device (20),

The clarifying basin includes set on the reaction zone (1) top and with the chemicals dosing plant (12) of at least one chemical feed pipe, institute Chemical feed pipe is stated including at least the first chemical feed pipe (13) for loading pH adjusting agent, the second chemical feed pipe for loading coagulant (14) and the third chemical feed pipe (15) for loading flocculant, first chemical feed pipe (13), second chemical feed pipe (14) and The third chemical feed pipe (15) is connected to first water inlet pipe (29), described second through corresponding dosage valve (16) respectively Reaction tank (10) and the third reaction tank (11),

The third reaction tank (11) through the third isolation board (4) disposed adjacent one another and the 4th isolation board (27) with Sedimentation basin (2) connection, the bottom of the sedimentation basin (2) is provided with the mud-removing bucket (17) for collecting sludge, the precipitating Pond (2) further includes the mud pit (18) below the sedimentation basin (2), the mud pit (18) through the first elevator pump (19) with The bottom of the mud-removing bucket (17) is connected.

10. clarifying basin according to claim 9, characterized in that the isolation board includes at least parallel and vertical each other Directly in first isolation board (3) of reaction tank bottom surface, second isolation board (5), the third isolation board (4) and described The opening of four isolation boards (27), the opening of first isolation board (3) and the third isolation board (4) is located at the first of reaction tank Side (6), the opening of second isolation board (5) and the opening of the 4th isolation board (27) are located at second side (7) of reaction tank,

Wherein, first side (6) and described second side (7) be located at the reaction tank along its short transverse upside and under Side.