Air supporting and filtering integral device
The present invention relates to sewage disposal device, and in particular to air supporting and filtering integral device.
Air supporting is a kind of equipment for being widely used in industrial wastewater and urban sewage treatment, and it plays separation of solid and liquid and person's oil
The effect of water separation.Its operation principle is：The micro-bubble of high degree of dispersion is formed in water, adheres to industrial wastewater and municipal sewage
In hydrophobic solid or liquid particles, after particle adhesion bubble, form apparent density and be less than the flco of water and float to the water surface, shape
It is stripped off into scum layer, so as to realize the process of solid-liquid or water-oil separating.But sewage still has portion after conventional airfloat equipment
Divide suspension residual, such as the COD of colloidal attitude and remaining macromolecular substances.
The content of the invention
In view of the above-mentioned problems, the invention provides air supporting and filtering integral device, it further can be removed in decontaminated water
The COD of colloidal attitude and remaining macromolecular substances, improve the removal efficiency of suspension.
Its technical scheme is such, and it includes pond body and air dissolving system, and the air dissolving system includes dissolving, its feature
It is, the pond body includes air flotation zone and filtering area；
The air flotation zone includes reaction zone, contact mixed zone and the Disengagement zone being separated successively by dividing plate, described anti-
Area and the contact mixed zone are answered by pipeline UNICOM, the dissolved air water efferent duct UNICOM of the dissolving is to contacting mixed zone, institute
The slag chute that Disengagement zone coordinates provided with Slag Scraping Device and with Slag Scraping Device is stated, the slag chute is provided with and leads slag weir；
The filtering area is provided with sewage collecting tank, filtering ponds, filtered fluid storage tank, membrane filtration groove and Rinsing Area, and the sewage is received
Collection groove is located above the filtering ponds and is provided with overfall A, and the sewage collecting tank and Disengagement zone are described by pipeline UNICOM
Filtering ponds are provided with the overfall with membrane filtration groove UNICOM with filtered fluid storage tank by pipeline and water pump UNICOM, the filtered fluid storage tank
B, the membrane filtration groove is interior to be provided with membrane module, and the bottom of the membrane module is connected with aerating pipelines, the purified liquor outlet UNICOM on its top
The Rinsing Area, the filtered fluid storage tank also connect dissolving, the dope outlet UNICOM reaction zone of the membrane filtration groove by pipeline.
Further, it is respectively equipped with downflow weir on the overfall A, overfall B.
Further, the purified liquor outlet of the membrane module is connected by pipe-line system, water pump with the Rinsing Area, described clear
Tank top is provided with film clear water output, its underpart is provided with membrane backwashing mouth, and the pipe-line system includes the first branch pipe, the second branch pipe
With the 3rd branch pipe, first branch pipe is provided with the first connector and the 3rd connector, and second branch pipe is provided with second and connected
Fitting, the both ends connection purified liquor outlet and membrane backwashing mouth of first branch pipe, second branch pipe connect the first connector and
The delivery port of water pump, the 3rd branch pipe junctional membrane clear water output and the second connector, the water inlet connection the 3rd of the water pump
Connector, position of first branch pipe between the first connector and the 3rd connector, second branch pipe are located at first
Position, film clear water output and membrane backwashing mouth between connector and the second connector are respectively equipped with valve.
Further, the pond body sidepiece is provided with grug feeding jar, and the grug feeding jar passes through pipeline, dosing pump and membrane module
Purified liquor outlet connects.
Further, the membrane module is plate film assembly or hollow fiber film assembly.
Using the present invention, sewage, successively by reaction zone, contact mixed zone and Disengagement zone, is entered in air flotation zone by Bubble-floating Method
The preliminary separation of solid and liquid of row and fluid separation；Into after filtering area, successively by filtering ponds, filtered fluid storage tank and membrane module, enter
One step removes the COD of the colloidal attitude in decontaminated water and remaining macromolecular substances, so as to improve the removal efficiency of suspension.In addition,
By the way that on the basis of the original pond body of air supporting, clear water zone is divided into filtering ponds, filtered fluid storage tank, membrane filtration groove and Rinsing Area, and
Membrane module is installed in membrane filtration groove so that the device can integrate a variety of processing functions in the confined space, not only have and take up an area
Area is small, reduced investment, and equipment, for conventional airfloat equipment, SS, colourity, removal of heavy metal ions rate are intended to bright
It is aobvious to improve.
Brief description of the drawings
Fig. 1 is the main structure diagram of the present invention.
Fig. 2 is the overlooking the structure diagram of the present invention.
Fig. 3 is the left view structural representation of the present invention.
Fig. 4 is the right side structural representation of the present invention.
Fig. 5 is the structural representation for the pipe-line system that the purified liquor outlet of the plate film assembly of the present invention is connected with Rinsing Area.
As shown in Figures 1 to 5, it includes pond body 1 and air dissolving system, and pond body includes air flotation zone and filtering area；Wrap air flotation zone
The reaction zone 3 being separated successively by dividing plate 31, dividing plate 5, contact mixed zone 4 and Disengagement zone 6 are included, reaction zone 3 and contact are mixed
Area 4 is closed by the UNICOM of water distributor 20, reaction zone 3 is provided with sewage inlet 2, agitator is provided with it, and Disengagement zone 6 is provided with scraping
Slag machine 7 and the slag chute 9 coordinated with Slag Scraping Device, slag chute 9 are provided with and lead slag weir 8.
Filtering area is provided with sewage collecting tank 10, filtering ponds 16, filtered fluid storage tank 21, membrane filtration groove 25 and Rinsing Area 19, sewage
Collecting tank 10 is located at the top of filtering ponds 16 and is provided with overfall A, sewage collecting tank 10 and Disengagement zone 6 by the UNICOM of collector pipe 18,
Be provided with filtrate, filter cap and filter plate in filtering ponds 16, filtering ponds 16 and filtered fluid storage tank 21 can be set on the pipeline by pipeline UNICOM
Water pump is put, filtered fluid storage tank 21 is provided with the overfall B with the UNICOM of membrane filtration groove 25, and overfall A is provided with downflow weir 11, overfall
B is provided with downflow weir 13, is provided with membrane module in membrane filtration groove 25, and membrane module is specially plate film assembly, under plate film assembly 14
Portion is connected with aerating pipelines 27, the UNICOM's Rinsing Area 19 of purified liquor outlet 22 on its top, dope outlet 32 and the reaction of membrane filtration groove 25
Area 3 is provided with delivery port 12 by pipeline UNICOM, Rinsing Area 19.
The one end of aerating pipelines 27 is provided with compressed air inlet port 23, the other end is provided with air purge valve 24, what aerating pipelines were formed
Bubble can carry out flush clean to the surface of plate film assembly 14, effectively prevent from blocking, when having blocking inside aerating pipelines 27
Wait, and open air purge valve 24, reach the purpose of flushing.
The purified liquor outlet 22 of plate film assembly is connected by pipe-line system 33, water pump 15 with Rinsing Area 19, Rinsing Area top
Membrane backwashing mouth 30 is provided with provided with film clear water output 29, its underpart, pipe-line system 33 includes the first branch pipe 34, the and of the second branch pipe 37
3rd branch pipe 40, the first branch pipe 34 are provided with the first connector 35 and the 3rd connector 36, and the second branch pipe 37 is provided with second and connected
Fitting 39, the both ends connection purified liquor outlet 22 and membrane backwashing mouth 30 of the first branch pipe 34, the both ends connection first of the second branch pipe 37
The delivery port of connector 35 and water pump 15, the junctional membrane clear water output 29 of the 3rd branch pipe 40 and the second connector 39, water pump 15 enter
The mouth of a river connects the 3rd connector 36, and position of first branch pipe 34 between the first connector and the 3rd connector is provided with valve
43, position of second branch pipe between the first connector 35 and the second connector 39 is provided with valve 38, film clear water output 29
End is provided with valve 42, and membrane backwashing mouth end is provided with valve 41.Film is blocked, and different, change is opened and closed by switch valve
Water (flow) direction, water pump 15 extract clear liquid, inverse injection plate film assembly 14, cleaning film surface from membrane backwashing mouth 30.
Pond body sidepiece be provided with grug feeding jar 17, grug feeding jar 17, such as sour grug feeding jar, alkali grug feeding jar by pipeline, dosing pump with
The purified liquor outlet 22 of plate film assembly 14 connects, and when plate film assembly 14 effectively can not recover membrane flux with backwash, adds
Medicinal cupping 17 can inject suitable medicament by dosing pump to plate film assembly 14, reach the purpose of cleaning plate film assembly 14.In addition,
Grug feeding jar also includes flocculant grug feeding jar, the flocculation aid grug feeding jar needed for air supporting.
Air dissolving system includes dissolving and high-pressure pump, and dissolving is fixed on pond body side wall, and its dissolved air water efferent duct UNICOM is extremely
Mixed zone 4 is contacted, its clear water input pipe passes through high-pressure pump and the UNICOM of filtered fluid storage tank 21.
The course of work is as follows：1st, sewage enters reaction zone 3 from water inlet 2, carries out flocculation reaction；2nd, entered by water distributor 20
Entering pond body contact mixed zone 4, and mixed herein with dissolved air water so that microbubble can effectively be adhered to floc particle surface,
Form the particle that gross density is less than water；3rd, enter Disengagement zone 6 by dividing plate 5, and carry out FLOTATION SEPARATION herein, complete preliminary consolidate
Liquid separation process；4th, the sewage of preliminary treatment enters sewage collecting tank 10 by collector pipe 18, then enters by overfall A and contain
The filtering ponds 16 of filtrate；5th, the sewage of preliminary treatment enters filtered fluid storage tank 21 after being filtered in filtering ponds 16；6th, filtrate storage tank
Foul water fraction flows back to form dissolved air water in 21, and enters flotation tank, and other part enters membrane filtration groove 25 by overfall B；7th, lead to
Cross the sewage that water pump 15 is aspirated in membrane filtration groove 25 to filter into plate film assembly, obtained clear liquid is stored in Rinsing Area 19, most
Pass through the discharge system of delivery port 12 eventually, the dope after filtering is extracted by reflux pump 28, is back to reaction zone 3.
Plate film assembly in above-described embodiment can be substituted by hollow fiber film assembly.