CN209652028U - A kind of sewage disposal system - Google Patents

Abstract

The utility model discloses a kind of sewage disposal systems, including what is be sequentially communicated: grille well, for biggish floating material and solid sundries in sewage to be isolated, and by the sewage discharge after isolation into oil removal collecting-tank；Oil removal collecting-tank, for degreasing to the sewage for being emitted into its inside；And coagulation reactor, for the sewage after degreasing from suction in the oil removal collecting-tank, and mud-water separation is realized after the sewage and coagulant are sufficiently mixed, to form supernatant and sludge；This sewage disposal system, using the difference in height between sewage draining exit and dirt inlet, makes sewage realize automatic-discharging under the action of its own gravity in the discharge process of sewage, without increasing suction unit, saves production cost；The investment for reducing equipment using oil removal collecting-tank and coagulation reactor, has significantly saved production cost, has saved the energy.

Description

A kind of sewage disposal system

Technical field

This application involves technical field of sewage, and in particular to a kind of sewage disposal system.

Background technique

Gem grinding waste water is mainly derived from polishing operation, containing a large amount of jade powder (suspended matter) and abrasive material, suspends Object is high, Yi Yinqi irrigation canals and ditches, channel aggradation.The characteristics of gem grinding waste water is that concentration of suspension is up to 2000-3000mg/L, mainly Ingredient is silica, and existing easily heavy bulky grain also has surface to charge not easily settled small plastochondria, when these particles precipitate When, easily formation bed mud is hardened.

It is directed to the general treatment process of gem grinding waste water at present are as follows: raw wastewater → grille well → oil separator → collecting-tank → PH adjusts pond → coagulating basin → flocculation basin → sedimentation basin → qualified discharge.The treatment process, process flow is long, equipment amount is more, accounts for Ground area is big, energy consumption is high, complicated for operation.

Therefore, the prior art has much room for improvement and improves.

Utility model content

The application is intended to provide a kind of sewage disposal system, to optimize the process of sewage treatment, reduces equipment amount, simplifies behaviour Make process.

This application provides a kind of sewage disposal systems, including what is be sequentially communicated:

Grille well, for being isolated biggish floating material and solid sundries in sewage, and by the sewage discharge after isolation to every In oily collecting-tank；

Oil removal collecting-tank, for degreasing to the sewage for being emitted into its inside；And

Coagulation reactor for the sewage after degreasing from suction in the oil removal collecting-tank, and by the sewage and mixes Solidifying agent realizes mud-water separation after being sufficiently mixed, to form supernatant and sludge；

The bottom of the grille well is provided with the first sewage draining exit, is provided with first into dirt on the side wall of the oil removal collecting-tank Mouthful, first sewage draining exit and first dirt inlet are by pipeline connection, and the height of first sewage draining exit is higher than described The height of first dirt inlet.

The sewage disposal system, wherein further include: sludge-tank, the sludge-tank is for collecting the coagulating The sludge and precipitating that device is formed are to form filtrate；The bottom of the coagulation reactor is provided with the second sewage draining exit, the second row The height of dirty mouth is higher than the top of the sludge-tank；The sludge that second sewage draining exit is used to form the coagulation reactor is arranged It puts into the sludge-tank.

The sewage disposal system, wherein the bottom of pond of the sludge-tank is provided with third sewage draining exit, and the oil removal is catchmented The second dirt inlet is additionally provided on the side wall in pond, the height of the third sewage draining exit is higher than the height of second dirt inlet, institute It states third sewage draining exit and second dirt inlet passes through pipeline connection；The third sewage draining exit and second dirt inlet are used for will The filtrate discharge formed after the sludge-tank precipitating is into the oil removal collecting-tank.

The sewage disposal system, wherein the oil removal collecting-tank is internally provided with first partition and second partition； The first partition and second partition are arranged along the axial direction of the oil removal collecting-tank, and the second partition is from the oil removal The bottom of collecting-tank upwardly extends, bottom certain distance of the bottom end of the first partition apart from the oil removal collecting-tank, and institute The top for stating second partition is higher than the bottom end of the first partition；The oil removal is catchmented cell compartment for oil removal by the first partition Room and collecting chamber, first dirt inlet are arranged on the side wall of the oil removal room, and second dirt inlet is arranged in the collection On the side wall of water chamber, the second partition is located in the collecting chamber.

The sewage disposal system, wherein the grille well is internally provided with grid；The grid is from the grid The bottom of well to top extend, by the inside division of the grille well be first compartment and second compartment, and the grid along from Second compartment tilts predetermined angle to the direction of first compartment；Sewage is flowed into second compartment from first compartment after grid, institute State the bottom that the first sewage draining exit is located at second compartment.

The sewage disposal system, wherein the coagulation reactor includes: reaction tube, guide shell, sewage pipe, coagulation Agent pipe and negative pressure device；The top and bottom end of the reaction tube and the guide shell are opened wide, and the guide shell is covered described anti- It answers outside cylinder；The input end of the negative pressure device is connected to the outlet end of the outlet end of the sewage pipe and the coagulant pipe, The outlet end of the negative pressure device is connected to the inside of the reaction tube；The negative pressure device makes the dirt for generating negative pressure Water pipe sucks sewage from the oil removal collecting-tank under the action of negative pressure, makes the coagulant pipe under the action of negative pressure Aspirate coagulant.

The sewage disposal system, wherein the coagulation reactor further include: the tank body of sealing is opened on the tank body Equipped with the sewage mouth for being connected to the outlet end of the sewage pipe, the coagulant being connected to the outlet end of the coagulant pipe Mouthful, and the negative pressure mouth being connected to the input end of the negative pressure device；The inside of the tank body is generated in the negative pressure device Negative pressure is formed under the action of negative pressure.

The sewage disposal system, wherein the coagulation reactor further include: the coagulant for dosing coagulant is thrown Add device；The coagulant dosage device has the coagulant dosage device outlet end being connected to the input end of the coagulant pipe.

The sewage disposal system, wherein the coagulation reactor further include: for being connected to going out for the negative pressure device Mouth end and the feed pipe with the reaction tube.

The sewage disposal system, wherein the coagulation reactor further include: cover the precipitating outside the guide shell Tower, the bottom end of the precipitator tower are formed as the cone cell shunk.

The beneficial effects of the utility model are:

Sewage disposal system provided herein, including what is be sequentially communicated: grille well, it is biggish in sewage for being isolated Floating material and solid sundries, and by the sewage discharge after isolation into oil removal collecting-tank；Oil removal collecting-tank, for being emitted into it Internal sewage degreases；And coagulation reactor, for from the oil removal collecting-tank suction degrease after sewage, And mud-water separation is realized after being sufficiently mixed the sewage and coagulant, to form supernatant and sludge；The bottom of the grille well It is provided with the first sewage draining exit, is provided with the first dirt inlet on the side wall of the oil removal collecting-tank, first sewage draining exit and described First dirt inlet is by pipeline connection, and the height of first sewage draining exit is higher than the height of first dirt inlet.This sewage Processing system, using the difference in height between sewage draining exit and dirt inlet, makes sewage in its own gravity in the discharge process of sewage Under the action of realize automatic-discharging, without increasing suction unit, save production cost；Using oil removal collecting-tank and coagulation reactor The investment for reducing equipment, has significantly saved production cost, has saved the energy.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of sewage disposal system provided by the utility model.

Specific embodiment

The application is described in further detail below by specific embodiment combination attached drawing.

This application provides a kind of sewage disposal systems, are mainly used for the processing system of treated gemstone abrasive waste water.Under Stating the sewage in embodiment is gem grinding waste water.Shown in Figure 1, sewage disposal system provided by the present embodiment includes It is sequentially communicated: grille well 10, oil removal collecting-tank 20, coagulation reactor 30 (dotted line frame as shown in figure 1) and sludge-tank 40.

The upstream of grille well 10 is source of sewage 50, and the sewage in source of sewage 50 is emitted into first in grille well 10, the sewage For the waste water after gem grinding, wherein being mingled with operator institute in biggish floating material and solid sundries, such as process of lapping Finger-stall, polybag for using etc..Grille well 10 is used for biggish floating material and the solid sundries be isolated in the sewage, and will be every Sewage discharge from biggish floating material and solid sundries is into oil removal collecting-tank 20.Oil removal collecting-tank 20 is used for being emitted into The biggish floating material of its internal insulation and the sewage of solid sundries degrease.Coagulation reactor 30 is used for from oil removal collecting-tank Sewage after suction degreases in 20, and mud-water separation is realized after the sewage and coagulant are sufficiently mixed, to form supernatant Liquid and sludge.Sludge-tank 40 is formed by sludge and precipitating for collecting coagulation reactor 30 to form filtrate.Coagulation reactor 30, which are formed by supernatant, reaches and is emitted into workshop use after discharge standard again, realizes water circulation use, coagulation reactor 30 It is formed by mud discharging and forms 50 mud that moisture content is less than packet point after precipitating after a period of time into sludge-tank 40 The mud cake can be sent to brick field and carry out secondary use by cake.

The bottom of grille well 10 is provided with the first sewage draining exit 11, is specifically to be positioned close to 20 side of oil removal collecting-tank Sidewall bottom, the first dirt inlet 21 is provided on the side wall of oil removal collecting-tank 20, and the first sewage draining exit 11 and the first dirt inlet 21 are logical Cross pipeline connection, and the height of the first sewage draining exit 11 is higher than the height of the first dirt inlet 21, i.e. the first sewage draining exit 11 and first into Dirty mouth 21 has certain difference in height, so that the sewage after isolation suspended matter is naturally arranged because of the effect of self gravity It puts into oil removal collecting-tank 20, without providing power, saves the energy.

In another embodiment, it can be not provided with the first dirt inlet, the height of the first sewage draining exit 11 is only needed to be higher than oil removal collection The tip height in pond 20, and the bottom of grille well 10 is higher than the top of oil removal collecting-tank 20, by the first sewage draining exit 11 and oil removal The Chi Kou of collecting-tank 20 is connected to, then the sewage after biggish floating material and solid sundries are isolated through the first sewage draining exit 11 and every It is emitted into oil removal collecting-tank 20 after the Chi Kou of oily collecting-tank 20.

The bottom of coagulation reactor 30 is provided with the second sewage draining exit 361, which is used for coagulation reactor 30 are formed by mud discharging into sludge-tank 40, and particularly the height of second sewage draining exit 361 is higher than the top of sludge-tank 40 End, the second sewage draining exit 361 are connected to the top pond oral area of sludge-tank 40 by pipeline, equally by difference in height in sludge itself weight Under the action of power by mud discharging into sludge-tank 40, filtrate is formed to carry out precipitating to the sludge.

In another embodiment, dirt inlet can also be set on the side wall of sludge-tank 40, and the height of the dirt inlet is low In the height of the second sewage draining exit 361, the dirt inlet and the second sewage draining exit 361 are connected to by pipeline, equally can be realized sludge certainly The purpose of dynamic discharge.

The bottom of pond of sludge-tank 40 is provided with third sewage draining exit 41, be additionally provided on the side wall of oil removal collecting-tank 20 second into Dirty mouth 26, and the height of third sewage draining exit 41 is higher than the height of the second dirt inlet 26, third sewage draining exit 41 and the second dirt inlet 26 Pass through pipeline connection.Third sewage draining exit 41 and the second dirt inlet 26 equally have difference in height, will sink under the action of the difference in height Filtrate discharge behind shallow lake mixes in coagulation reactor 30 with coagulant again into oil removal collecting-tank 20, to the filtrate after the precipitating It closes, and is emitted into sludge-tank 40 after forming sludge again in coagulation reactor 30, through after a period of time in sludge-tank 40 Precipitating after formed mud cake of the moisture content less than 50 percent, according to this reciprocation cycle purify sewage.

Grille well 10 is internally provided with grid 12, which extends from the bottom of grille well 10 to top, by grid The inside division of well 10 is first compartment 13 and second compartment 14, and grid 12 is along from second compartment 14 to the side of first compartment 13 To inclination predetermined angle, which is specially 60 ° -70 °, and the first sewage draining exit 11 above-mentioned is located at the side wall of second compartment 14 Bottom.

As above, along tilting 60 ° -70 ° of grid 12 from second compartment 14 to the direction of first compartment 13 for grille well 10 Inside is divided into first compartment 13 and second compartment 14, then the upper space of first compartment 13 be greater than lower space, sewage from During being flowed into second compartment 14 after first compartment 13, grid 12 after being given off in source of sewage 50, due in sewage The density of biggish floating material and solid sundries is greater than water, and particle is larger, therefore during flowing, biggish floating material And solid sundries can along inclined grid 12 quickly to the flows of first compartment 13, be easy to biggish floating material and The processing of solid sundries, while being inclined at grid 12 and can increase contact area with biggish floating material and solid sundries, The treatment effect to biggish floating material and solid sundries can be enhanced.Water in sewage can pass through the miscellaneous of grids 12 with other Matter, greasy dirt etc. then pass through grid 12 and enter in second compartment 14.Biggish floating material and solid sundries are beaten again later Fishing processing.

Oil removal collecting-tank 20 is internally provided with first partition 22 and second partition 23, first partition 22 and second partition 23 Be arranged along the axial direction of oil removal collecting-tank 20, along the present embodiment, the axial direction of oil removal collecting-tank 20 is up and down direction, change and The bottom of Yan Zhi, first partition 22 and second partition 23 perpendicular to oil removal collecting-tank 20.Second partition 23 is from oil removal collecting-tank 20 Bottom upwardly extend, bottom certain distance of the bottom end of first partition 22 apart from the oil removal collecting-tank 20, and second partition 23 top is higher than the bottom end of first partition 22.First partition 22 will be divided into oil removal room 24 and collecting chamber between oil removal collecting-tank 20 25, the first dirt inlet 21 is arranged on the side wall of oil removal room 24, and the second dirt inlet 26 is arranged on the side wall of collecting chamber 25, and second Partition 23 is located in collecting chamber 25.

As above, the sewage after excluding biggish floating material and solid sundries is through the first sewage draining exit 11, pipeline, the first dirt inlet 21 enter in oil removal room 24, and since the density of greasy dirt is less than the density of water etc., most of greasy dirts are collected in oil removal room 24, And water and other impurities is then flowed into collecting chamber 25 between the bottom of first partition 22 and second partition 23.Simultaneously because the The top of two partitions 23 is higher than the bottom end of first partition 22, after a certain amount of water is collected in collecting chamber 25,22 He of first partition The greasy dirt in sewage that water between second partition 23 flows into after can preventing passes through, and significantly improves the effect to degrease. When the greasy dirt in oil removal room 24 reaches a certain amount of, processing is collected to the greasy dirt in oil removal room 24.

Coagulation reactor 30 includes: reaction tube 31, guide shell 32, sewage pipe 33, coagulant pipe 34 and negative pressure device 35.Reaction tube 31 is the cone structure from its top to bottom crimp, and guide shell 32 is cylinder-like structure, and 32 sets of guide shell anti- It answers outside cylinder 31, the top and bottom end of reaction tube 31 and guide shell 32 are opened wide.The input end of negative pressure device 35 and sewage pipe 33 Outlet end is connected to the outlet end of coagulant pipe 34, and the input end of sewage pipe 33 extend into the collecting chamber 25 of oil removal collecting-tank 20 In, the input end of sewage pipe 33 to outlet end forms the channel for sewage flow, the input end of coagulant pipe 34 to outlet end shape At the channel circulated for coagulant.The outlet end of negative pressure device 35 is connected to the inside of reaction tube 31, particularly, is filled in negative pressure Set between 35 outlet end and reaction tube 31 setting feed pipe 39, that is to say, that the input end of feed pipe 39 and negative pressure device 35 Outlet end connection, the outlet end of feed pipe 39 is connected to the inside of reaction tube 31.The bottom of reaction tube 31 is arranged in the feed pipe 39 Portion, and the feed pipe 39 and the lower circumference of reaction tube 31 are tangent.

It is also set up between the input end of negative pressure device 35 and the outlet end of sewage pipe 33 and the outlet end of coagulant pipe 34 There is tank body 37, which is the tank body of sealing.It is offered on the tank skin of tank body 37 for connecting with the outlet end of sewage pipe 33 Logical sewage mouth, the coagulant mouth being connected to the outlet end of coagulant pipe 34, and be connected to the input end of negative pressure device 35 Negative pressure mouth.The outlet end of sewage pipe 33 is connected to by sewage mouth with the inside of tank body 37, and the outlet end of coagulant pipe 34 passes through mixed Solidifying agent mouth is connected to the inside of tank body 37, and the input end of negative pressure device 35 is connected to by negative pressure mouth with the inside of tank body 37, negative Pipeline is set between pressure mouth and the input end of negative pressure device 35.

It is additionally provided with coagulant dosage device 38 in the input end of coagulant pipe 34, the coagulant dosage device 38 is mixed for adding Solidifying agent, has the coagulant dosage device outlet end being connected to the input end of coagulant pipe 34, the i.e. input end of coagulant pipe 34 It is connected with coagulant dosage device outlet end, to form the channel passed through for coagulant.

Negative pressure device 35 makes the sucks sewage under the action of negative pressure of sewage pipe 33, makes coagulant pipe for generating negative pressure 34 aspirate coagulant under the action of the negative pressure.The negative pressure device 35 is specially to pump.It should be noted that coagulant is by alkali The compositions such as liquid, flocculation liquid can make sewage form the alum wadding object of bulky grain, after being sufficiently mixed with sewage convenient for sewage Processing, the alum wadding object of the bulky grain are the sludge in above embodiment.

After negative pressure device 35 generates negative pressure, the inside of sewage pipe 33 and the inside of coagulant pipe 34 are respectively formed negative pressure, at this Under the action of negative pressure, import of the sewage through flowing to negative pressure device 35 behind the outlet end of the input end of sewage pipe 33 and sewage pipe 33 End, input end of the coagulant through flowing to negative pressure device 35 behind the outlet end of the input end of coagulant pipe 34 and coagulant pipe 34 are dirty Water and coagulant are flowed into reaction tube 31 from the outlet end of negative pressure device 35 after the mixing of negative pressure device 35 after feed pipe 39 Inside.

Sewage and the mixed state of coagulant are known as mixed liquor, the mixed liquor is with higher speed by 39 edge of feed pipe Tangent direction enters inside reaction tube 31 with the circumference of 31 bottom of reaction tube, due to being limited by 31 barrel of reaction tube, The mixed liquor is forced to do making rotating motion from bottom to top, in the rotary course of mixed liquor from bottom to top, sewage and coagulant Reach adequately mixing, reaction forms alum wadding object, in the process, due to the upward thrust of water be greater than it is anti-positioned at cone structure Answer the gravity of the mixed liquor in the cone cylinder of cylinder 31, water and alum wadding object will not be flowed out from the bottom end of reaction tube 31, and water is from reaction tube 31 Open top mouth at overflow after flow between reaction tube 31 and guide shell 32, and precipitated.Alum wads a quilt with cotton object in precipitation process It realizes that mud-water separation forms supernatant and sludge, sinks since the density of sludge is greater than the density of water and slowly, from guide shell 32 Bottom end discharge.When negative pressure device 35 is out of service, the alum wadding object in reaction tube 31 loses the upward thrust of tangent line, and at it It is precipitated downwards under the action of self gravity, by being discharged behind the bottom end of reaction tube 31 and the bottom end of guide shell 32.

This coagulation reactor 30 further includes precipitator tower 36, and 36 sets of the precipitator tower is outside guide shell 32, and the precipitator tower 36 Bottom end is formed as the cone structure shunk, arranges respectively from the outlet of the bottom end of the outlet and guide shell 32 of 31 bottom end of reaction tube Alum wadding object and sludge out drains into the cone structure of 36 bottom end of precipitator tower.The cone of precipitator tower 36 is arranged in second sewage draining exit 361 The bottom end of shape structure, alum wadding object and sediment is discharged.In the top inner wall of precipitator tower 36, water outlet weir plate 362, effluent weir are set The top inner wall of plate 362 and precipitator tower 36 forms effluent weir, and the aforementioned supernatant formed through precipitating is arranged to overflow from effluent weir Out.

In conclusion sewage disposal system provided by the present embodiment utilizes row in the discharge process of sewage and sludge Difference in height between dirty mouth and dirt inlet makes to realize automatic-discharging under the self gravitation effect of sewage and sludge, takes out without increasing Device is inhaled, cost, energy saving are saved；Reduce the investment of equipment using oil removal collecting-tank and coagulation reactor, while only existing It uses pump as power in coagulation reactor, significantly reduces production cost.

The foregoing is a further detailed description of the present application in conjunction with specific implementation manners, and it cannot be said that this Shen Specific implementation please is only limited to these instructions.For those of ordinary skill in the art to which this application belongs, it is not taking off Under the premise of from the design of the application utility model, a number of simple deductions or replacements can also be made.

Claims (10)

1. a kind of sewage disposal system, which is characterized in that including what is be sequentially communicated:

Grille well, for being isolated biggish floating material and solid sundries in sewage, and by the sewage discharge after isolation to oil removal collection In pond；

Oil removal collecting-tank, for degreasing to the sewage for being emitted into its inside；And

Coagulation reactor, for the sewage after degreasing from suction in the oil removal collecting-tank, and by the sewage and coagulant Mud-water separation is realized after being sufficiently mixed, to form supernatant and sludge；

The bottom of the grille well is provided with the first sewage draining exit, is provided with the first dirt inlet on the side wall of the oil removal collecting-tank, First sewage draining exit and first dirt inlet are by pipeline connection, and the height of first sewage draining exit is higher than described first The height of dirt inlet.

2. sewage disposal system as described in claim 1, which is characterized in that further include: sludge-tank, the sludge-tank is for receiving Collect the sludge that the coagulation reactor is formed and precipitates to form filtrate；The bottom of the coagulation reactor is provided with the second blowdown Mouthful, the height of second sewage draining exit is higher than the top of the sludge-tank；Second sewage draining exit is used for the coagulating The mud discharging that device is formed is into the sludge-tank.

3. sewage disposal system as claimed in claim 2, which is characterized in that the bottom of pond of the sludge-tank is provided with third blowdown Mouthful, the second dirt inlet is additionally provided on the side wall of the oil removal collecting-tank, the height of the third sewage draining exit is higher than described second The height of dirt inlet, the third sewage draining exit and second dirt inlet pass through pipeline connection；The third sewage draining exit and described The filtrate discharge that second dirt inlet is used to be formed after sludge-tank precipitating is into the oil removal collecting-tank.

4. sewage disposal system as claimed in claim 3, which is characterized in that the oil removal collecting-tank is internally provided with first Partition and second partition；The first partition and second partition are arranged along the axial direction of the oil removal collecting-tank, and described the The bottom of two partitions from the oil removal collecting-tank upwardly extends, bottom of the bottom end of the first partition apart from the oil removal collecting-tank Portion's certain distance, and the top of the second partition is higher than the bottom end of the first partition；The first partition is by the oil removal The cell compartment that catchments is oil removal room and collecting chamber, and first dirt inlet is arranged on the side wall of the oil removal room, described second into Dirty mouth is arranged on the side wall of the collecting chamber, and the second partition is located in the collecting chamber.

5. sewage disposal system as described in claim 1, which is characterized in that the grille well is internally provided with grid；Institute State grid and extend from the bottom of the grille well to top, by the inside division of the grille well be first compartment and second every Room, and the grid tilts predetermined angle along from second compartment to the direction of first compartment；Sewage is from first compartment after grid It is flowed into second compartment, first sewage draining exit is located at the bottom of second compartment.

6. sewage disposal system as described in claim 1, which is characterized in that the coagulation reactor includes: reaction tube, water conservancy diversion Cylinder, sewage pipe, coagulant pipe and negative pressure device；The top and bottom end of the reaction tube and the guide shell are opened wide, described to lead Flow cartridge covers outside the reaction tube；The outlet end and the coagulant pipe of the input end of the negative pressure device and the sewage pipe Outlet end is connected to, and the outlet end of the negative pressure device is connected to the inside of the reaction tube；The negative pressure device is for generating Negative pressure makes sewage pipe sucks sewage from the oil removal collecting-tank under the action of negative pressure, the coagulant pipe is made to exist Coagulant is aspirated under the action of the negative pressure.

7. sewage disposal system as claimed in claim 6, which is characterized in that the coagulation reactor further include: the tank of sealing Body offers the sewage mouth for being connected to the outlet end of the sewage pipe, the outlet with the coagulant pipe on the tank body Hold the coagulant mouth of connection, and the negative pressure mouth being connected to the input end of the negative pressure device；The inside of the tank body is described Negative pressure is formed under the action of the negative pressure that negative pressure device generates.

8. sewage disposal system as claimed in claim 7, which is characterized in that the coagulation reactor further include: for adding The coagulant dosage device of coagulant；There is the coagulant dosage device coagulant being connected to the input end of the coagulant pipe to throw Add device outlet end.

9. sewage disposal system as claimed in claim 8, which is characterized in that the coagulation reactor further include: for being connected to The outlet end of the negative pressure device and feed pipe with the reaction tube.

10. sewage disposal system as claimed in claim 9, which is characterized in that the coagulation reactor further include: cover described Precipitator tower outside guide shell, the bottom end of the precipitator tower are formed as the cone cell shunk.