CN208632333U - Efficient printing and dyeing wastewater treatment system - Google Patents

Abstract

The utility model discloses efficient printing and dyeing wastewater treatment system, it is handled for desizing and/or alkali-minimization dyeing wastewater, it includes pretreatment unit and advanced treatment apparatus, and the pretreatment unit includes that can make PVA and/or terephthalic acid (TPA) and/the first conditioning tank being precipitated from waste water and the air floatation machine for separating precipitation slurry with waste water.This programme deft design, structure is simple, in advance by dyeing waste water PVA slurry and terephthalic acid (TPA) disposed from waste water, COD in water is greatly reduced, it can not effectively degrade these pollutant defects so as to effectively make up biochemical treatment, it can reduce the COD load of biochemical treatment, greatly improve the treatment effeciency of whole system, while ensure that final standard water discharge.

Description

Efficient printing and dyeing wastewater treatment system

Technical field

The utility model relates to sewage treatment field, especially efficient printing and dyeing wastewater treatment system.

Background technique

Dyeing and printing sewage has the characteristics that water is big, organic pollutant content is high, alkalinity is big, change of water quality is big, belongs to difficult One of industrial wastewater, and with the development of printing and dyeing industry, a large amount of fiber products occur, new chemical sizwe, dye material and whole The application for managing agent etc., complicates the ingredient of dyeing waste water more, further increases processing difficulty.

Conventional processing method mainly uses biochemical treatment, and the water outlet COD of simple biochemical processing method, coloration pass through Often be difficult to it is up to standard, this is because the biodegradable organic compounds in sewage are not easy to be degraded by microorganisms, it is difficult to pass through standard biologic Treatment process removal will also not easily pass through natural self-purification effect degradation after the waste water of biochemical treatment is discharged into natural environment.

Utility model content

The purpose of this utility model is exactly to provide a kind of efficiently printing and dyeing to solve the above-mentioned problems in the prior art Waste water treatment system.

The purpose of this utility model is achieved through the following technical solutions:

Efficient printing and dyeing wastewater treatment system is handled for desizing and/or alkali-minimization dyeing wastewater, including pretreatment unit and Advanced treatment apparatus, the pretreatment unit include can make PVA and/or terephthalic acid (TPA) and/be precipitated from waste water first Conditioning tank and the air floatation machine for separating precipitation slurry with waste water.

Preferably, in the efficient printing and dyeing wastewater treatment system, the advanced treatment apparatus includes sequentially connected Two conditioning tanks, bioselection pond, biochemical treatment system, secondary settling tank, coagulating basin, flocculation basin, efficient sedimentation tank and clear water reserviors.

Preferably, in the efficient printing and dyeing wastewater treatment system, the biochemical treatment system includes aerator and dives Water flow pulling equipment, the revolving speed of the diving propelling equipment is between 30-50rpm.

Preferably, in the efficient printing and dyeing wastewater treatment system, the efficient sedimentation tank includes pond body, in the pond body Inlet and outlet are formed with, the water inlet is connected to the intracorporal cloth water chamber in pond, and the two sides of the cloth water chamber are respectively formed Settling zone, tilting in each settling zone to have one group of parallel inclined plate, the inclined plate is plate, the settling zone and exhalant region The water outlet is arranged in the bottom of connection, the exhalant region.

Preferably, in the efficient printing and dyeing wastewater treatment system, the end of the cloth water chamber extends to the inclined plate Lower section is located on the both side plate of the cloth water chamber below the inclined plate and is evenly distributed with one group of water distribution mouth.

Preferably, in the efficient printing and dyeing wastewater treatment system, the width of the settling zone is between 1 ± 0.2m.

Preferably, in the efficient printing and dyeing wastewater treatment system, the inner wall and cloth of each inclined plate and the pond body The side plate of water chamber, which is tightly connected, keeps micro chink.

Preferably, in the efficient printing and dyeing wastewater treatment system, the inclined plate is formed on the face of the bottom of pond body There is one group of deflector.

Preferably, in the efficient printing and dyeing wastewater treatment system, the exhalant region and each settling zone are by extremely Few exhalant canal connection, the height of the two sides water outlet weir plate of the exhalant canal is adjustable.

Preferably, in the efficient printing and dyeing wastewater treatment system, being provided with below the inclined plate can be by bubble pair Sludge on the inclined plate carries out clean Accrete clearing device, and the Accrete clearing device includes the tracheae with one group of stomata, the gas Pipe connects compression gas suppling device.

Preferably, in the efficient printing and dyeing wastewater treatment system, the bottom of the pond body is sludge bucket, the sludge bucket Side wall inclination angle be no more than 20 °, further include the mud scraper that can stir the sludge in the sludge bucket.

It preferably, further include connecting with the air floatation machine and efficient sedimentation tank in the efficient printing and dyeing wastewater treatment system The sludge treatment equipment connect.

The advantages of technical solutions of the utility model, is mainly reflected in:

This programme deft design, structure is simple, using acid out principle, in advance by the PVA slurry in dyeing waste water and to benzene Dioctyl phthalate is disposed from waste water, and COD in water is greatly reduced, and can not effectively degrade these so as to effectively make up biochemical treatment Pollutant defect reduces the COD load of biochemical treatment, greatly improves the treatment effeciency of whole system, while ensure that final Standard water discharge.

It is separated by solid-liquid separation using shallow layer flotation machine, treatment effeciency is high, and outlet effect is good, and the removal efficiency of COD can reach To 70% or more.

By the design to efficient sedimentation tank, inclined plate and horizontal plane form certain inclination angle and are placed on settling zone, shorten Grain settling height so as to shorten the sedimentation time increases the settling area of sedimentation basin, improve sedimentation basin processing capacity and Treatment effeciency increases suspended matter aisle spare when falling on inclined plate using plate as inclined plate, meanwhile, planar surface light Sliding, the particulate matter being deposited on plate is easier to be slipped to sedimentation basin bottom along inclined plate, avoids sludge and concentrates on a certain region and causes The problem of siltation, enables to water distribution uniform, flow velocity of the water flow between each inclined plate is allowed to keep as far as possible in combination with cloth water chamber water distribution Unanimously, and water flow is reduced to the impact raising particulate matter settling efficiency at sedimentation basin bottom, reduce to suspended matter sedimentation effect It influences.

Water distribution mouth is distributed on the side plate of cloth water chamber while controlling the width of each settling zone, can guarantee each inclined plate area The uniformity of domain water distribution, so that it is guaranteed that the flow velocity of water flow is consistent in precipitation zone between each inclined plate, so that particulate matter is along certain It can be deposited on inclined plate after line-of-road movement, guarantee that particulate matter can be by steady removal in waste water, while stablizing flow velocity and can avoid disturbing Settled suspended matter is moved, improves sedimentation effect, it is ensured that effluent quality.

The inclined plate of efficient sedimentation tank and pool wall and cloth water chamber are tightly connected, can be avoided sewage directly from inclined plate and pool wall and Gap between cloth water chamber, which flows to above inclined plate, to be there is water flow short circuit and runs mud problem, advantageously ensures that sedimentation effect；And it is every A inclined plate is separately installed and easy to disassemble, and the maintenance and replacement of single inclined plate are convenient for relative to overall package, is conducive to drop Low cost of parts and maintenance difficulties.

Deflector is added on the inclined plate of efficient sedimentation tank, ensure that water channel is uniform, avoids deformation, the sludge of straight inclined plate Stopping state.

Efficient sedimentation tank clears up inclined plate by Accrete clearing device, can remove the sludge to deposit on inclined plate in time, keep away Exempt from the problem of blocking water stream channel occur, influencing outlet effect, is conducive to extend service life.

Larger compared with traditional sludge bucket height, situations such as sewage sludge storage volume is small, and moisture percentage in sewage sludge is high, the efficient of this technology is sunk Sewage sludge storage area volume is improved, sludge is made to reach the compression precipitating stage, it is aqueous to reduce sludge by reducing sludge bucket angle in shallow lake pond Rate changes sludge settling property, improves sludge concentration, and in combination with mud scraper, the mobility of sludge, be ensure that when increasing spoil disposal Sludge bucket sludge discharge effects, realize sludge condensation in precipitation process, can reduce sludge condensation technique, reduce cost.

Detailed description of the invention

Fig. 1 is the system schematic of the utility model；

Fig. 2 is the top view of the air floatation machine of the utility model；

Fig. 3 is one embodiment cross-sectional view of the air floatation machine of the utility model；

Fig. 4 is the schematic diagram of collector pipe in the air floatation machine of the utility model;

Fig. 5 is another embodiment cross-sectional view of the air floatation machine of the utility model；

Fig. 6 is the top view of the efficient sedimentation tank of the utility model；

Fig. 7 is that the stereoscopic schematic diagram of the efficient sedimentation tank of the utility model (only shows the part knot of exhalant canal in figure Structure)；

Fig. 8 is the schematic diagram of the cloth water chamber of the efficient sedimentation tank of the utility model;

Fig. 9 is the schematic diagram of the exhalant canal of the efficient sedimentation tank of the utility model；

Figure 10 is the structure sectional view in the efficient sedimentation tank of the utility model with mud scraper.

Specific embodiment

The purpose of this utility model, advantage and feature will carry out figure by the non-limitative illustration of preferred embodiment below Show and explains.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent replacement or wait Effect transformation and formed technical solution, all fall within the requires of the utility model protection within the scope of.

In the description of scheme, it should be noted that term " center ", "upper", "lower", "left", "right", "front", "rear", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, It is merely for convenience of description and simplification 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 ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.Also, in retouching for scheme It is proximal end by the direction of proximal operator using operator as reference, the direction far from operator is distal end in stating.

The efficient printing and dyeing wastewater treatment system disclosed with reference to the accompanying drawing to the utility model is illustrated, and is used for desizing And/or alkali-minimization dyeing wastewater processing, as shown in Fig. 1 comprising pretreatment unit 100 and advanced treatment apparatus 200, it is described Pretreatment unit 100 includes the first conditioning tank 1001 that PVA and/or terephthalic acid (TPA) can be made to be precipitated from waste water and will be precipitated The air floatation machine 1002 that slurry (PVA and/or terephthalic acid (TPA)) is separated with waste water.

Wherein, PVA and/or terephthalic acid (TPA) is precipitated from waste water using acid out principle in first conditioning tank 1001, It connects the air floatation machine 1002 by pipe-line mixer (not shown).

The air floatation machine 1002 can be known various airfloat equipments, preferably shallow layer flotation machine, also, the shallow-layer Air floatation machine preferably uses SS316 material to make, and acid pH value environment can be effectively adapted to, to guarantee stability in use.

And in another preferred embodiment, the air floatation machine can also be such as flowering structure, as shown in attached drawing 2, attached drawing 3, Including coagulating basin 30, flocculation basin 40, reaction tank 50 and the flotation tank 60 being sequentially communicated, the flotation tank 60 include contact zone 601, Disengagement zone 602, dump tank 603 and Rinsing Area 604, be provided in the contact zone 601 one group connect with air feed equipment 605 it is molten Gas release 606, the top of the Disengagement zone 602 are provided with Slag Scraping Device 607, the shifting of the scum board 6071 of the Slag Scraping Device 607 Dynamic stroke covers the Disengagement zone 602, and all standing may be implemented and scrape slag, effectively increase and scrape slag effect, reduces bottom of pond deposition Sludge improves effluent quality, while improving the separative efficiency of dross and liquid.

As shown in Fig. 2, the Disengagement zone 602 and Rinsing Area 604 are connected by the collector pipe 608 with inlet opening 6081 It is logical, also, as shown in Fig. 4, the inlet opening 6081 is located at the lower half portion of the collector pipe 608, and its axis and level The angle in face is at 45 ° ± 5 °, to can effectively reduce water discharge speed, reduces the disturbance to bottom of pond water flow, improves effluent quality.

When work, sewage is introduced into coagulating basin 30, and coagulant is added in coagulating basin 30, and sewage reacts to be formed with coagulant The finely ground particles of indissoluble add flocculant subsequently into flocculation basin 40 in flocculation basin 40, the finely ground particles in sewage with Flocculant reaction is further formed biggish particulate matter, enters back into reaction tank 50 and is reacted, and is formed and stablizes wadding body；It is anti-through dosing Sewage that should be good enters the contact zone 601 of flotation tank 60, is sufficiently mixed and contacts with the dissolved air water that dissolved air release 606 discharges, dirty Wadding body in water, which fully absorbs, adheres to micro-bubble, subsequently into Disengagement zone 602, wadding body the effect of bubble buoyancy float to The water surface forms scum layer, and dross is scraped by the scum board 6071 of Slag Scraping Device into dump tank 603, and the clear water of lower layer is through collector pipe 608 Collection is flow in Rinsing Area 604, and a part reflux is used for dissolved air water, and another part residue clear water is discharged by overflow port.

From the point of view of specific, the coagulating basin 30, flocculation basin 40, reaction tank 50 can be known various structures, their company Logical structure and it can be known various forms with the connectivity structure of flotation tank 60, in the flotation tank 60, dissolved air release 606, air feed equipment 605 and its connection relationship, the distributing position in each region etc. are known technologies, are not the emphasis of this programme, Details are not described herein, stresses that the structure of Slag Scraping Device 607 is described below.

As shown in Fig. 3, the Slag Scraping Device 607 includes a pair of first sprocket wheel 6072 and a pair of second sprocket wheel 6073, a pair First sprocket wheel 6072 is symmetrical and is rotatablely arranged at the top of one end of the Disengagement zone 602, and a pair of second sprocket wheel 6073 can It is rotatably arranged in the top of the other end of the Disengagement zone 602, specifically a pair of sprocket setting is rotationally set up at one Axis 6074 above Disengagement zone, first sprocket wheel 6072 and the second sprocket wheel 6073 of the same side are connected by chain 6075, and two It is connected at least one scum board 6071, preferably two on chain 6075, and is distributed in the both ends of chain；First sprocket wheel 6072 Or second sprocket wheel 6073 connection drive its rotation power device, the power device includes motor 6076, the motor 6076 First sprocket wheel 6072 or the second chain are connected by belt transmission structure or sprocket drive structure or gear transmission structure 6077 Axis 6074 where wheel 6073.

In addition, part wadding body deposits to bottom of pond due to gravity, it is therefore desirable to by this in the Slag Scraping Device 607 work The wadding body precipitated a bit is removed in time in order to avoid influence effluent quality, therefore, as shown in Fig. 3, described in a feasible embodiment The bottom of flotation tank 60 is inverted trapezoidal construction 6010, and its front end gradient is less than the rear end gradient, is provided in its bottom of slope position Mud drainage slot 6020, the mud drainage slot 6020 are provided with sludge pipe, the mud drainage slot 6020 have for control spoil disposal operation from Movable valve can realize that the sludge of timing is discharged by remotely controlling the opening and closing of the automatic valve.

Further, as shown in Fig. 3, in order to the sludge of 6010 front end of inverted trapezoidal construction is quickly focused on the mud drainage slot At 6020, the dross all standing air bearing all-in-one machine further includes a mud scraper 6030, can be by the inverted trapezoidal construction 6010 The sludge in front bottom end region scrape at the mud drainage slot 6020, the knot of specific structure and above-mentioned Slag Scraping Device 607 Structure is identical, and itself and the Slag Scraping Device 607 be by same motor driven, and when work, the sludge for depositing to bottom of pond scrapes mud by bottom Machine is scraped to sludge sump and is then discharged out.

Bottom of pond is made into certain slope and scrapes slag equipment with bottom of pond, it is only necessary to which a sludge pipe, regular spoil disposal can mention High bottom spoil disposal efficiency reduces the workload of construction and operation operation, pond body height is effectively reduced.

Slag Scraping Device and mud scraper eliminate a set of power device by same motor driven, are conducive to simplify driving structure, drop Low equipment cost.

In another feasible embodiment, as shown in Fig. 5, the bottom of the flotation tank 60 is provided with an at least sludge bucket 609, the preferably described sludge bucket 609 is two, before wherein the front end gradient a of rear end sludge bucket 6091 is front end sludge bucket 6092 Twice or more of hipped end degree b, the front end gradient b of further preferred front end sludge bucket 6092 is between 17 ± 3 °, its rear end gradient B It is identical as the front end gradient a of the rear end sludge bucket 6092, front end gradient a and the rear end gradient phase of the rear end sludge bucket 6092 Together, between 47 ± 3 °.

Why design in this way, is since wadding body deposition needs a period of time, thus the settled sludge amount of Disengagement zone front end Less, Disengagement zone rear end settled sludge amount is more, therefore, it is necessary to increase the front end gradient of sludge bucket, thus when the sludge of deposition It when contacting with sludge bucket inner wall, can be more easier to drop into sludge bucket bottom, the too small sludge of the gradient is avoided to be adhered to sludge bucket On inner wall.

Further, the pretreatment unit 100 connects sump (not shown), is provided with band in the sump and mentions The pipeline of pump is risen, the end of the pipeline connects the advanced treatment apparatus 200.

As shown in Fig. 1, the advanced treatment apparatus 200 includes sequentially connected second conditioning tank 2001, bioselection Pond 2002, biochemical treatment system 2003, secondary settling tank 2004, coagulating basin 2005, flocculation basin 2006, efficient sedimentation tank 2007 and clear water Pond 2008.

It is provided with aerator in second conditioning tank 2001, is used to make waste water homogeneous average therein, and institute The second conditioning tank 2001 is stated PH test device (not shown) is arranged inside and connects biology by the pipeline with elevator pump Pond 2002 is selected, the bioselection pond 2002 is used for by the way that preferred strain is added to remove the der Pilz in waste water, the life Changing processing system 2003 includes aerator and diving propelling equipment, so that the zoogloea in waste water keeps suspended state, so as to So that zoogloea comes into full contact with waste water, sufficiently reacted with the polluter in waste water, otherwise, if zoogloea is deposited on pond Bottom, it is easy to generate anaerobic zone, be unfavorable for dominant microflora growth, and corruption, toxic gas can be generated.

The secondary settling tank 2004 is used to realize in the muddy water of 2003 output of biochemical treatment system and be separated by solid-liquid separation, and passes through reflux Pipeline connects the bioselection pond 2002, and the solid isolated is zoogloea and is back to bioselection by reflux line Pond 2002, the clear water isolated are provided with use in the coagulating basin 2005 and flocculation basin 2006 from coagulating basin 2005 is flow to In the agitating device of stirring and PH test device (not shown) for measuring pH value.

The efficient sedimentation tank 2007 can be the structure of known various sedimentation basins, in the preferred embodiment, such as attached Shown in Fig. 6 comprising pond body 1 is formed with water inlet 2 and water outlet 3 in the pond body 1, the water inlet 2 in pond body 1 Cloth water chamber 4 is connected to, and the two sides of the cloth water chamber 4 are respectively formed settling zone 5, in each settling zone 5 it is tilting have one group it is parallel Inclined plate 6, the inclined plate 6 is plate, the cloth water chamber 4, settling zone 5 front end be provided with exhalant region 7, the exhalant region 7 with The settling zone 5 is connected to, and the water outlet 3 is arranged in bottom.

When work, after sewage is entered in cloth water chamber 4 by water inlet 2, it is distributed in the settling zone 5 of its two sides, with dirt Water continues to flow into, and sewage gradually rises to inclined plate 6, and the suspended matter in sewage contacts to stop after being blocked with inclined plate 6 It moves up and glides under self gravitation effect along inclined plate 6 and sink to the bottom of the pond body 1, clear water continues to rise to one Determine to be flowed into the exhalant region 7 after height and be flowed out by water outlet 3.

From the point of view of specific, as shown in Fig. 7, the pond body 1 include from top to bottom organize integral top 11, middle part 12 and Lower part 13, the cross sectional dimensions on the top 11 is greater than the cross sectional dimensions at middle part 12, and it is divided into the area Liang Ge by a partition 9 Domain, one of region are connected to the space at the middle part 12, the space partition in another region and middle part 12, the middle part 12 It is obliquely installed, the lower part 13 is preferably sludge bucket, so as to effectively realize the discharge of sludge.

As shown in Fig. 7, the water inlet 2 is located at a high position for the pond body 1, is specifically located at one of the top 11 On side panel, and the axis direction of the water inlet 2 and the partition 9 are perpendicular or parallel, while its inflow flow control In 10mm/s or less.

As shown in Fig. 7, the cloth water chamber 4 includes two opposite side plates 41, they are from 2 side of water inlet The inner wall of panel extend at the partition 9 of the other side and the side panel at middle part 12, and the side plate 41 is from the upper of institute's pond body 1 Portion 11 extends to lower part 13, meanwhile, the side plate 41 can be plate and be also possible to curved slab, preferably plate, thus described The cross section of cloth water chamber 4 is rendered as rectangle.

As shown in Fig. 8, the lower section on two side plates 41 of the cloth water chamber 4 positioned at the inclined plate 6 is evenly distributed with one Group water distribution mouth 42, one, increases the sewage in cloth water chamber 4 and enters the channel of settling zone 5, to guarantee the uniform of water distribution Property, in addition, remaining to be distributed to sewage in settling zone 5 by the water distribution mouth 42 when sludge is stacked into 6 end of inclined plate.

In addition, in order to avoid settling zone 5 is wide, cause cloth water chamber 4 and water distribution mouth 42 can not uniform fold the problem of, preferably The width of each settling zone 5 is controlled between 1 ± 0.2m, so as to guarantee the uniformity of water distribution.

The inclined plate 6 can be the smooth plate in various feasible surfaces, such as PVC board or PP plate, each inclined plate 6 It is arranged separately in the settling zone, the angle with horizontal plane is between 50 ° -60 °, so as to play optimal filtering effect Fruit；Meanwhile side plate 41 sealed connection or microgap of each inclined plate 6 with the inner wall and cloth water chamber 4 of the pond body 1 are set It sets, such as their gap is not more than 5mm, specifically when installation, on pool wall and can be provided with installation on the side plate 41 of cloth water chamber Bracket, adjacent stent are spaced in 50mm or so, and inclined plate 6 is separately connected two opposite brackets in position by bolt, when When using being tightly connected, as shown in Fig. 6, groove can be opened up on pond body inner wall and side plate 41, each inclined plate 6 is by that can be clamped Rubber weather strip 14 in a groove is fastened on groove.

Further, inclined plate 6 deforms in order to prevent, so as to cause the gap variation between adjacent inclined plate, influences the equal of water channel The problem of even property, is provided with one group of deflector (not shown) on the face of the bottom of pond body 1 in the inclined plate 6, described The width of deflector is laid along water (flow) direction in 50mm or so, so as to increase the intensity of inclined plate 6, avoids it by water flow Deformation occurs for impact.

As shown in attached drawing 6, attached drawing 7, each settling zone 5 is connected by an at least exhalant canal 8 with the exhalant region 7 Logical, specifically, the exhalant canal 8 is located at the top of 5 middle swash plate 6 of settling zone, and top is not higher than the water inlet 2 Top, in addition, since the exhalant canal 8 is installed in pond body, since pond body sedimentation or other factors lead to two sides effluent weir Plate appearance is not contour to lead to generate water outlet in its operational process unevenly, Biased flow phenomenon, therefore the two sides of the exhalant canal 8 go out The height of weir board 81 is adjustable, is realized by such as flowering structure:

As shown in Fig. 9, the exhalant canal 8 include saddle 82 and it is disposed thereon with water outlet weir plate 81 be the slot of side plate Type water channel hangs down on the top surface of the saddle 82 and is equipped with one group of stay bolt 83, and being provided on the substrate 84 of the groove profile water channel can quilt The stay bolt 83 perforative through-hole when actual installation, is first installed a holding nut 85 and is made on each stay bolt 83 They are contour, are then run through the through-hole on pedestal 84 by a stay bolt 83 respectively, and the pedestal 84 described in one group at this time to prop up Supportting nut 85 is support, when necessary, finally, again being fixed 84 position of pedestal with each stay bolt 83 that is spirally connected of fixture nut 86.When When needing to adjust the height of water outlet weir plate 81, the holding nut 85 of corresponding side and the height of fixture nut 86 are adjusted, two can be made The water outlet weir plate 81 of side keeps contour.

In addition, in order to solve the problems, such as to occur sludge effect of reservoir siltation filter effect on the inclined plate 6, as shown in Fig. 7, The bottom of the inclined plate 6 is additionally provided with desilting equipment 10, and the desilting equipment 10 includes one group of tracheae for having venthole 102 101, the tracheae 101 is preferably UPVC pipe, naturally it is also possible to be the tubing of other materials, be arranged under the inclined plate 6 The position of square 400mm ± 50mm, and it is parallel with the axis of water inlet 1 to be preferably provided with direction, (is not shown in figure by steam line Compression gas suppling device (not shown) is connected out), and by supplying to the tracheae 101, gas is by the venthole 102 To form bubble in the bottom of inclined plate 6, bubble generates strong disturbance to each inclined plate 6 in uphill process for blowout, so as to So that the sludge to deposit on inclined plate 6 is generated power because of vibration, drives sludge settling, realize the effect of dredging.

Finally, when the lower part 13 is sludge bucket, as shown in Fig. 10, the inclination angle@of the side wall 131 of the sludge bucket (angle of sludge bucket side wall 131 and sludge bottom sheet 132) is between 15 ± 5 °, to significantly increase the appearance of sludge bucket Product is conducive to the enrichment factor for improving sludge；Meanwhile the sedimentation basin of the high sludge condensation rate is additionally provided with mud scraper 20, it is described Mud scraper 20 includes driving motor 201, transmission shaft 202 and scraper 203, and the motor 201 is set to the top of the sedimentation basin, The transmission shaft 202 extends from top to the bottom position of the sludge bucket, and the distribution of scraper 203 is in umbrella, inclination angle with The inclination angle of the side wall 131 is close, so as to be stirred by the vulgar rotation of scraper 203 to sludge, has mud Enough mobility ensure that the validity of spoil disposal.

Further, as shown in Fig. 1, the efficient printing and dyeing wastewater treatment system further includes and the efficient sedimentation tank 2007 The sludge treatment equipment 300 of connection, the sludge treatment equipment 300 include that the sludge that connect with the efficient sedimentation tank 2007 is dense Contracting pond 3001, the sludge concentration tank 3001 connect sheet frame filter-pressing device 3002, the dirt that the plate compression device 3002 generates Mud is transported outward by conveying device 3003；Also, the air floatation machine 1002, bioselection pond 2002 and secondary settling tank 2004 are all connected with institute Sludge concentration tank 3001 is stated, the sludge that they are generated is discharged into the sludge concentration tank 3001 and is handled.

When above-mentioned efficient printing and dyeing wastewater treatment system works, process is as follows:

The desized wastewater of collection and/or alkali decrement waste water are introduced into the first conditioning tank 1001 by S1, and sulfuric acid is added, and are adjusted The pH value of waste water is to 3~4, preferably 4 or so, enters flotation tank after Polyferric Sulfate coagulating sedimentation then is added by pipe-line mixer, After flotation tank removal some of the contaminants (PVA and/or terephthalic acid (TPA)), waste water enters the sump；The dirt isolated Mud enters in the sludge concentration tank 3001.

S2, by elevator pump by the waste water lifting in sump into the second conditioning tank 2001, after making waste water homogeneous average Be promoted to the bioselection pond 2002, by dominant bacteria remove der Pilz, the dominant microflora be preferably alcaligenes, The strains such as bacillus, Flavobacterium, Zoogloea category, pseudomonas, bacillus coli and Comamonas, So as to improve the removal effect of strain in waste water.

Enter the biochemical treatment system 2003, the biochemical treatment system 2003 by the sewage in bioselection pond 2002 In shallow-layer flow pulling equipment revolving speed be 30-50rpm so that average current velocity reaches 0.3m/s or so in pond, to guarantee bacterium glue Group is in suspended state, and major pollutants is made to degrade.

Enter the separation of solid and liquid that the secondary settling tank 2004 completes sewage through treated the sewage of biochemical treatment system 2003, point The zoogloea separated out is promoted by pump and is back to bioselection pond 2002, and supernatant gravity flow enters coagulating basin 2005.

In the coagulating basin 2005 be added coagulant PAC bond the colloidal particles in water mutually, assemble formed it is hard to tolerate The particulate matter of property；Then waste water in the coagulating basin 2005 is introduced into flocculation basin 2006, adds flocculant PAM, further mentions The partial size of high-leveled and difficult soluble particles object, to improve post precipitation effect；It is described efficiently heavy that the waste water of the flocculation basin 2006 is introduced Behind shallow lake pond 2007, the separation of suspended matter and liquid is realized.

The clear water isolated flows into clear water reserviors 2008, is discharged after up to standard, and the sludge isolated passes through water pump lifting extremely In sludge concentration tank 3001, after the progress filters pressing of plate compression device 3002 is entered after concentration, sludge is by outward transport equipment 3003 Outward transport processing, filtrate are flowed into second conditioning tank.

Still there are many embodiment, all technologies formed using equivalents or equivalent transformation for the utility model Scheme is all fallen within the protection scope of the utility model.

Claims (10)

1. efficient printing and dyeing wastewater treatment system is handled for desizing and/or alkali-minimization dyeing wastewater, it is characterised in that: including pre- Processing unit (100) and advanced treatment apparatus (200), the pretreatment unit (100) include that can make PVA and/or to benzene two Formic acid and the first conditioning tank (1001) being precipitated from waste water and the air floatation machine (1002) for separating precipitation slurry with waste water.

2. efficient printing and dyeing wastewater treatment system according to claim 1, it is characterised in that: the advanced treatment apparatus It (200) include sequentially connected second conditioning tank (2001), bioselection pond (2002), biochemical treatment system (2003), two heavy Pond (2004), coagulating basin (2005), flocculation basin (2006), efficient sedimentation tank (2007) and clear water reserviors (2008).

3. efficient printing and dyeing wastewater treatment system according to claim 2, it is characterised in that: the biochemical treatment system It (2003) include aerator and diving propelling equipment, the revolving speed of the diving propelling equipment is between 30-50rpm.

4. efficient printing and dyeing wastewater treatment system according to claim 2, it is characterised in that: the efficient sedimentation tank (2007) Including pond body (1), water inlet (2) and water outlet (3) are formed on the pond body (1), the water inlet (2) and pond body (1) are interior Cloth water chamber (4) connection, the two sides of the cloth water chamber (4) are respectively formed settling zone (5), tilting in each settling zone (5) There is one group of parallel inclined plate (6), the inclined plate (6) is plate, and the settling zone (5) is connected to exhalant region (7), the exhalant region (7) water outlet (3) is arranged in bottom.

5. efficient printing and dyeing wastewater treatment system according to claim 4, it is characterised in that: the end of the cloth water chamber (4) The lower section of the inclined plate (6) is extended to, the lower section that the inclined plate (6) are located on the both side plate (41) of the cloth water chamber (4) is uniform One group of water distribution mouth (42) is distributed with.

6. efficient printing and dyeing wastewater treatment system according to claim 4, it is characterised in that: each inclined plate (6) and institute The side plate (41) of the inner wall and cloth water chamber (4) of stating pond body (1) is tightly connected or keeps micro chink.

7. efficient printing and dyeing wastewater treatment system according to claim 4, it is characterised in that: the exhalant region (7) and each The settling zone (5) is connected to by an at least exhalant canal (8), the height of the two sides water outlet weir plate (81) of the exhalant canal (8) It spends adjustable.

8. efficient printing and dyeing wastewater treatment system according to claim 4, it is characterised in that: set below the inclined plate (6) Clean Accrete clearing device (10), Accrete clearing device (10) packet can be carried out to the sludge on the inclined plate (6) by bubble by being equipped with The tracheae (101) with one group of stomata (102) is included, the tracheae connects compression gas suppling device.

9. efficient printing and dyeing wastewater treatment system according to claim 4, it is characterised in that: the bottom of the pond body (1) is Sludge bucket, the side wall inclination angle (@) of the sludge bucket are no more than 20 °, further include can stir sludge in the sludge bucket scrape mud Machine (20).

10. efficient printing and dyeing wastewater treatment system according to claim 2, it is characterised in that: further include and the air floatation machine (1002) and efficient sedimentation tank (2007) connection sludge treatment equipment (300).