CN208732793U - A kind of sewage disposal system - Google Patents

Abstract

The utility model relates to technical field of sewage, specially a kind of sewage disposal system, including by coagulative precipitation tank, crusher or agitator tank, reaction kettle, surge tank, plate and frame filter press and the displacement aerobic fermentation tank set gradually before and after sewage treatment process, the crusher is connect by belt conveyor with the reaction kettle, the agitator tank is connect by pump truck and conveyance conduit with the reaction kettle, and the reaction kettle is also connect with concentrated sulfuric acid charging-tank, the charging-tank of spent acid containing aluminium and mold cleaning waste water charging-tank respectively.The sludge and spent lye that generate in aluminium processing industry sewage disposal process (mold cleaning salkali waste, spent acid containing aluminium, aluminium scrap bits etc.) can be used as raw material by the utility model, are produced water purification agent aluminum sulfate, are improved the recovery utilization rate of sewage.

Description

A kind of sewage disposal system

Technical field

The utility model relates to technical field of sewage, specially a kind of sewage disposal system.

Background technique

It has the sewage that a large amount of waste water and spent acid are formed in aluminium processing enterprise production process to generate, if directly arranged sewage It puts, not only polluted environment, but also waste a large amount of resource.The prior art can do certain processing to sewage and discharge again, but existing Some sewage treatment process have energy consumption is high, product cannot recycle or product recovery utilization rate is low, and sewage treatment is not thorough, The defects of sewage treatment raw material is single.

Specifically: 1, sulfuric acid is first added during feeding intake for the prior art or Waste Sulfuric Acid adds aluminium-containing sludge again, disadvantage exists It easily is suspended in concentrated sulfuric acid upper layer at bulk in aluminium-containing sludge, excessively high reaction temperature is closed and generated safe hidden by aluminium-containing sludge Suffer from；2, the aluminium-containing sludge of the prior art is untreated, can extend the reaction time；3, the prior art is waited for by natural subsidence mode It takes supernatant liquor for production after fully reacting, the disadvantage is that time of repose is long, is layered unclear, easy output rejected product； 4, prior art raw material is single, only prepares product with aluminium-containing sludge with reacting for sulfuric acid；5, the prior art is to institute in aluminium-containing sludge The heavy metals removal contained is not studied；6, the prior art only has studied the proportion of reactant sulfuric acid and aluminium-containing sludge, primary first-order equation Aluminum sulfate is prepared, which be easily gelatinized product due to excessive concentration after the completion of reaction, is unfavorable for the qualified sulfuric acid of production Aluminium product.

Utility model content

In view of the problems of the existing technology the utility model, proposes a kind of sewage disposal system, can process aluminium The sludge and spent lye (mold cleaning salkali waste, spent acid containing aluminium, aluminium scrap bits etc.) generated in industry sewage treatment process is as raw material, production Water purification agent aluminum sulfate improves the recovery utilization rate of sewage.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of sewage disposal system of low energy consumption, Including by coagulative precipitation tank, crusher or agitator tank, reaction kettle, surge tank, the sheet frame set gradually before and after sewage treatment process Filter press and displacement aerobic fermentation tank, the crusher are connect by belt conveyor with the reaction kettle, and the agitator tank passes through pump Vehicle and conveyance conduit are connect with the reaction kettle, the reaction kettle also respectively with concentrated sulfuric acid charging-tank, the charging-tank of spent acid containing aluminium with And mold cleaning waste water charging-tank connection.

Preferably, include the moving track set on coagulative precipitation tank both sides lateral roof, it is right respectively with the moving track Two mobile mechanisms that should be connected, and the dross collecting means being connect with two mobile mechanisms；The dross collecting means include floating Slag collects mesh bag and mesh bag fixed frame, and the mesh bag fixed frame includes top plate, bottom plate and both side plate, and the base plate rear end is by turning Moving axis and both side plate are rotatablely connected, and the bottom plate front end is slidably connected with both side plate, and the side plate is equipped with arc sliding slot, described Two avris of bottom plate is equipped with the slide protrusion being cooperatively connected with the sliding groove, and the bottom base plate is equipped with telescopic gag lever post, institute It states side plate and is equipped with the gag lever post butt hole being used cooperatively with the gag lever post.

Preferably, the mobile mechanism includes the movable pulley for rolling connection with the moving track, with the movable pulley The movable stand of connection, connects the connecting rod of the movable stand and the dross collecting means, the telescopic rod connecting with the movable stand, And the driving motor being connect with the telescopic rod.

It is connect with the mesh bag fixed frame by gripper frame preferably, the dross collects mesh bag.

Preferably, the top plate be equipped with the connecting hole for allowing described connecting rod one end to pass through and by connector with it is described The connection of the connecting rod end；The connecting rod and the top plate connecting pin are equipped with several positioning through hole at equal intervals in the height direction, The connector includes the circle body being fixedly connected at the top of axial end portion and the top plate, the central axis of the circle body and the company The central axis for connecing hole is identical, and the circle body is equipped with the limit hole being used cooperatively with the positioning through hole, and the connector also wraps Include the Limit screw for connecting the positioning through hole and the limit hole.

Preferably, the gag lever post includes the external position-limiting drum fixed with the bottom base plate and limits with the outside The internal slide body of rod of cylinder internal slide connection, the external position-limiting drum inner wall are equipped with sliding rail, and the internal slide body of rod is equipped with The guide protrusions being used cooperatively with the sliding rail.

Preferably, the agitator tank includes the first staving and the second staving, first staving and second staving Between be equipped with switch valve；First rotating shaft is equipped in first staving, the outside the first rotating shaft and first staving The connection of one driving motor, the first rotating shaft are equipped with the agitator disk being obliquely installed, are equipped with sludge import at the top of first staving； The second shaft is equipped in second staving, second shaft is connect with the second driving motor outside second staving, Second shaft is equipped with stirring rod, and second staving bottom is equipped with sludge outlet.

Preferably, the agitator disk is provided with threaded openings.

Preferably, the stirring rod includes the spiral helicine body of rod.

The utility model has the beneficial effects that this practical dirt that can will be newly generated in aluminium processing industry sewage disposal process Mud and spent lye (mold cleaning salkali waste, spent acid containing aluminium, aluminium scrap bits etc.) are used as raw material, produce water purification agent aluminum sulfate, improve sewage Recovery utilization rate；Collect the dross on coagulative precipitation tank automatically by dross collecting means in order to which aluminium-containing sludge enters next step ring Section, it is high that dross collects easy to operate and collection efficiency；Agitator tank is by two agitators and using different mixing components to dirt Mud is stirred, and sludge can be made adequately to be stirred.

Detailed description of the invention

Fig. 1 is a kind of system block diagram of sewage disposal system of the utility model；

Fig. 2 is the structural schematic diagram of dross collecting means in the utility model coagulative precipitation tank；

Fig. 3 is the partial structure diagram of mesh bag fixed frame in Fig. 2；

Fig. 4 is the overall structure diagram of coagulative precipitation tank dross collecting device；

Fig. 5 is the structural schematic diagram of Tu4Zhong mobile mechanism；

Fig. 6 is the structural schematic diagram of Fig. 4 connecting rod one end and connector；

Fig. 7 is the structural schematic diagram of connecting rod in Fig. 4；

Fig. 8 is partial structure diagram when mesh bag fixed frame closes up；

Fig. 9 is the structural schematic diagram of gag lever post in Fig. 8；

Figure 10 is the structural schematic diagram of gripper frame；

Figure 11 is the structural schematic diagram of utility model agitator tank；

Figure 12 is the structural schematic diagram of agitator disk in Figure 11；

Figure 13 is the structural schematic diagram of stirring rod in Figure 11；

Wherein, 1, coagulative precipitation tank, 11, moving track, 21, movable pulley, 22, movable stand, 23, connecting rod, 231, positioning Through-hole, 232, external cylinder, 233, axial slide, 234, sliding block, 24, telescopic rod, 25, driving motor, 3, dross collecting means, 31, Top plate, 32, dross collection mesh bag, 33, side plate, 331, sliding groove, 34, bottom plate, 341, external position-limiting drum, 342, internal slide bar Body, 35, rotation axis, 41, circle body, 42, Limit screw, 5, gripper frame；61, the first staving, 611, first rotating shaft, 612, first drives Dynamic motor, 613, sludge import, 614, agitator disk, the 62, second staving, the 621, second shaft, the 622, second driving motor, 623, Sludge outlet, 624, stirring rod, 63, switch valve.

Specific embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1, a kind of sewage disposal system, including by the coagulating sedimentation set gradually before and after sewage treatment process Pond, crusher or agitator tank, reaction kettle, surge tank, plate and frame filter press and displacement aerobic fermentation tank, the crusher pass through belt conveying Machine is connect with the reaction kettle, and the agitator tank is connect by pump truck and conveyance conduit with the reaction kettle, and the reaction kettle is also It is connect respectively with concentrated sulfuric acid charging-tank, the charging-tank of spent acid containing aluminium and mold cleaning waste water charging-tank.

Wherein, sewage treatment process specifically includes following steps,

1) aluminium wastewater coagulating sedimentation will be contained and obtains aluminium-containing sludge.The main component of aluminium-containing sludge is aluminium: 5% or so, nickel: 0.001% or so, chromium: 0.0005% or so, Sulfates: 14% or so, moisture content: 80% or so, the inorganic impurities such as other silts 1% Left and right.

2) reaction kettle is delivered to after aluminium-containing sludge being crushed or homogenized.Specifically, moisture content is dirty containing aluminium less than 75 Mud, which is crushed by crusher and passes through belt conveyor, is delivered to reaction kettle；Moisture content is more than or equal to 75 aluminium-containing sludge Mixing is carried out by agitator tank to homogenize and by pump truck with pipeline to reaction kettle.Aluminium-containing sludge is crushed or is homogenized can Shorten the reaction time.

3) concentrated sulfuric acid and spent acid containing aluminium are added into reaction kettle and opens reactor agitator and is stirred, stirs 30 minutes The pH value of the mixture and pH value of mixture is adjusted by adding spent acid containing aluminium or mold cleaning waste water keeps it steady in observing response kettle afterwards It is scheduled in the range of 0.6 to 0.8, stops stirring when object reaction temperature to be mixed is down to 40 degrees Celsius and stands 4 hours.Wherein, Aluminium-containing sludge: the concentrated sulfuric acid: the mass ratio of the spent acid containing aluminium is 10:3:3.The main source of mold cleaning waste water be demoulding, alkaline cleaning procedure, at Part is mainly sodium hydroxide: 8% or so, aluminium: and 4% or so, moisture content: 85% or so, other impurities 3% or so.The spent acid containing aluminium it is main Source is pickling dope, and composition is mainly sulfuric acid: 15% or so, aluminium: and 2% or so, moisture content: 83% or so.

Mixture reaction is, from exothermic reaction, reaction temperature is substantially in 60 degrees centigrades, and low temperature season is preferably in reaction kettle Additional heat preservation.The reaction equation of this step includes,

(1)

(2)

(3)

4) mixture in reaction kettle is pumped into surge tank to cool down, and the mixture for being cooled to 30 degrees Celsius is pumped into Plate and frame filter press carries out filters pressing, and the aluminum sulfate filtrate that filters pressing obtains is collected to displacement aerobic fermentation tank, does not fill what filters pressing obtained The filter residue of reaction is divided to be transmitted back to raw material area.It is separated by solid-liquid separation by filters pressing mode, high production efficiency, product qualification rate is high.

5) excessive aluminium scrap bits are added in displacement aerobic fermentation tank, by aluminium scrap bits and aluminum sulfate filtrate stirring certain time with by sulphur Heavy metal in sour aluminium filtrate cements out and completes product curing.The heavy metal cemented out includes nickel and chromium.

This step replaces the equation reacted,

(4)

(5)

6) detection that indices are carried out to the product after displacement curing, is pumped into product library after reaching target level of product quality. Wherein, examination criteria is obtained according to actual use demand and comprehensive production cost, specially the mass fraction of aluminium oxide (Al2O3) >=6.5%, mass fraction≤0.5% of iron (Fe), mass fraction≤0.1%, 1% aqueous solution pH value >=3 of water-insoluble matter, arsenic (As) mass fraction≤0.0005%, mass fraction≤0.002% of lead (Pb), mass fraction≤0.001% of cadmium (Cd), mercury (Hg) mass fraction≤0.00005%, mass fraction≤0.002% of chromium (Cr), mass fraction≤0.0005% of nickel (Ni).

As shown in Fig. 2 to 10, for the ease of effectively utilizing aluminium-containing sludge, the dross by coagulating sedimentation pool surface is needed to go It removes.Coagulative precipitation tank includes the moving track 11 set on 1 both sides lateral roof of coagulative precipitation tank, right respectively with the moving track 11 Two mobile mechanisms that should be connected, and the dross collecting means 3 being connect with two mobile mechanisms.The dross collecting means 3 include Dross collects mesh bag 32 and mesh bag fixed frame, the mesh bag fixed frame include top plate 31, bottom plate 34 and both side plate 33, the bottom plate 34 rear ends are rotatablely connected by rotation axis 35 and both side plate 33, and 34 front end of bottom plate is slidably connected with both side plate 33, the side Plate 33 is equipped with arc sliding slot 331, and 34 liang of avris of the bottom plate are equipped with the slide protrusion being cooperatively connected with the sliding groove 331, 34 bottom of bottom plate is equipped with telescopic gag lever post, and the side plate 33 is equipped with the gag lever post being used cooperatively with the gag lever post and docks Hole.

The gag lever post include the external position-limiting drum 341 fixed with 34 bottom of bottom plate and with it is described outside position-limiting drum The internal slide body of rod 342 of 341 internal slides connection, external 341 inner wall of position-limiting drum are equipped with sliding rail, the internal slide bar Body 342 is equipped with the guide protrusions being used cooperatively with the sliding rail.

When dross is collected, bottom plate 34 turn to it is parallel with top plate 31 so that the opening of mesh bag fixed frame is maximum, convenient for dross It is collected in mesh bag 32 into dross, after the completion of dross collection, is first rotated up one end and top plate that bottom plate 34 makes bottom plate 34 Then 31 top contacts are extracted the internal slide body of rod 342 out and are inserted it into gag lever post butt hole, thus opening mesh bag fixed frame Mouth closure avoids the dross when carrying of dross collecting means 3 from falling from mesh bag fixed frame.

The dross is collected mesh bag 32 and is detachably connected with the mesh bag fixed frame, can incite somebody to action when dross collecting means 3 are cleared up Dross is collected mesh bag 32 and is removed from mesh bag fixed frame, and the cleaning of mesh bag 32 is collected convenient for dross.The dross collects mesh bag 32 It is connect with the mesh bag fixed frame by gripper frame 5, when installation, the sack that dross collects mesh bag 32 is first passed through into gripper frame 5 Frame mouth encases sack by the periphery of gripper frame 5 then along the periphery sack of turning over of gripper frame 5, finally will clamping Frame 5 is connected to sack and is socketed on mesh bag fixed frame and is fixed gripper frame 5 and mesh bag fixed frame with screw, so that it is solid to complete mesh bag Determine frame and dross collects the installation of mesh bag 32, it is simple and convenient.When disassembly, it is only necessary to remove screw, then remove gripper frame 5, most After remove dross collect mesh bag 32.

The mobile mechanism includes the movable pulley 21 that connection is rolled with the moving track 11, is connect with the movable pulley 21 Movable stand 22, connect the movable stand 22 and the sludge removal frame 3 connecting rod 23, stretched with what the movable stand 22 was connect Contracting bar 24, and the driving motor 25 being connect with the telescopic rod 24.When driving motor 25 rotates forward, telescopic rod extends forward, pushes away Dynamic movable stand 22 and movable pulley 21 move forward in moving track 11；When driving motor 25 inverts, telescopic rod is to after-contraction, band Dynamic movable stand 22 and movable pulley 21 move backward in moving track 11.The promotion small, required compared to slippery piece resistance of movable pulley 21 Power is small.Dross collecting means 3 can be received most drosses for one time on the pond face of coagulative precipitation tank back and forth by mobile mechanism Collection is clean, and the collection efficiency of dross is high.

The top plate 31 is equipped with the connecting hole for allowing described 23 one end of connecting rod to pass through and by connector and the connection The connection of the end of bar 23.The connecting rod 23 is equipped with several positioning through hole with 31 connecting pin of top plate at equal intervals in the height direction 231, the connector includes the circle body 41 being fixedly connected at the top of axial end portion and the top plate 31, the central axis of the circle body 41 Line is identical as the central axis of the connecting hole, and the circle body 41 is equipped with the limit hole being used cooperatively with the positioning through hole 231, The connector further includes the Limit screw 42 for connecting the positioning through hole 231 and the limit hole.According to the water surface of cesspool The positioning through hole 231 of different height may be selected in height, after positioning through hole 231 is chosen, can be inserted into Limit screw 42 and limit The positioning through hole 231 that Kong Bingyu chooses is connected through a screw thread fixation.At this point, the coagulative precipitation tank water surface is located in mesh bag fixed frame Portion.

The other end of the connecting rod 23 is connect by external cylinder 232 with the movable stand 22, external 232 inside of cylinder Wall is equipped with axial slide 233, and described end of connecting rod 23 is equipped with the sliding block 234 being slidably connected with the axial slide 233, when floating When slag collecting means 3 arrive at the completion dross collection of coagulative precipitation tank opposite side, it can first remove Limit screw 42 and pass through connecting rod 23 Axial slide 233 lifts, so that connecting rod 23 is separated with the connector of top plate 31, so that dross collecting means 3 are removed obliquely, Dross collecting means 3, which can put down connecting rod 23 after removing, makes its reset.Dross collecting means 3 can reversely pacify front and back again after cleaning In connecting rod 23, removing can be collected to dross again.

As shown in Figure 11 to Figure 13, the agitator tank includes the first staving 61 and the second staving 62, first staving 61 Switch valve 63 is equipped between second staving 62.First rotating shaft 611, the first rotating shaft are equipped in first staving 61 611 connect with the first driving motor 612 outside first staving 61, and the first rotating shaft 611 is stirred equipped with what is be obliquely installed Disk 614 is mixed, is equipped with sludge import 613 at the top of first staving 61.

Be equipped with the second shaft 621 in second staving 62, second shaft 621 with outside second staving 62 The connection of second driving motor 622, second shaft 621 are equipped with stirring rod 624, and 62 bottom of the second staving goes out equipped with sludge Mouth 623.

Aluminium-containing sludge is introduced into the first staving 61 and is stirred by agitator disk 614, and the agitator disk 614 being obliquely installed has Powerful stirring capacity can be such that the sludge in the first staving 61 is sufficiently stirred.The agitator disk 614 is provided with threaded openings 6, it can further improve the stirring effect of agitator disk 614 by threaded openings 6.

Stirring turns on the switch valve 63 after a certain period of time, and sludge in the first staving 61 is made to enter the second staving 62, and second barrel Body 62 carries out second by stirring rod 624 and stirs, and enters next link by sludge outlet 623 after the completion of stirring.It is described to stir Mixing bar 624 includes the spiral helicine body of rod, and the body of rod of the structure changes the mixing direction of sludge, to improve the stirring of sludge Effect.

Embodiment described above is only that preferred embodiments of the present invention are described, not practical new to this The conception and scope of type is defined.Without departing from the design concept of the present utility model, ordinary people in the field is to this The all variations and modifications that the technical solution of utility model is made, should fall within the protection scope of the present utility model, this is practical Novel claimed technology contents, are all described in the claims.

Claims (9)

1. a kind of sewage disposal system, it is characterised in that: including by the coagulative precipitation tank set gradually before and after sewage treatment process, Crusher or agitator tank, reaction kettle, surge tank, plate and frame filter press and displacement aerobic fermentation tank, the crusher pass through belt conveyor It is connect with the reaction kettle, the agitator tank is connect by pump truck and conveyance conduit with the reaction kettle, and the reaction kettle also divides It is not connect with concentrated sulfuric acid charging-tank, the charging-tank of spent acid containing aluminium and mold cleaning waste water charging-tank.

2. a kind of sewage disposal system according to claim 1, it is characterised in that: the coagulative precipitation tank includes being set to mix The moving track (11) of solidifying sedimentation basin (1) both sides lateral roof, two moving machines being connected respectively with the moving track (11) Structure, and the dross collecting means (3) being connect with two mobile mechanisms；The dross collecting means (3) include that dross collects mesh bag (32) and mesh bag fixed frame, the mesh bag fixed frame include top plate (31), bottom plate (34) and both side plate (33), the bottom plate (34) Rear end is rotatablely connected by rotation axis (35) and both side plate (33), and bottom plate (34) front end is slidably connected with both side plate (33), The side plate (33) is equipped with arc sliding slot (331), and (34) two avris of bottom plate, which is equipped with to cooperate with the sliding groove (331), to be connected The slide protrusion connect, bottom plate (34) bottom are equipped with telescopic gag lever post, and the side plate (33) is equipped with matches with the gag lever post Close the gag lever post butt hole used.

3. a kind of sewage disposal system according to claim 2, it is characterised in that: the mobile mechanism includes and the shifting Dynamic rail road (11) rolls the movable pulley (21) of connection, and the movable stand (22) connecting with the movable pulley (21) connects the movement The connecting rod (23) of frame (22) and the dross collecting means (3), the telescopic rod (24) being connect with the movable stand (22), Yi Jiyu The driving motor (25) of telescopic rod (24) connection.

4. a kind of sewage disposal system according to claim 2, it is characterised in that: the dross collects mesh bag (32) and institute Mesh bag fixed frame is stated to connect by gripper frame (5).

5. a kind of sewage disposal system according to claim 3, it is characterised in that: the top plate (31) is equipped with described in permission Connecting hole that connecting rod (23) one end passes through simultaneously is connect at the end by connector with the connecting rod (23)；The connecting rod (23) Several positioning through hole (231) are equipped at equal intervals in the height direction with the top plate (31) connecting pin, the connector includes axis The circle body (41) being fixedly connected at the top of to end and the top plate (31), the central axis and the connecting hole of the circle body (41) Central axis it is identical, the circle body (41) is equipped with the limit hole that is used cooperatively with the positioning through hole (231), the connector It further include the Limit screw (42) for connecting the positioning through hole (231) and the limit hole；The other end of the connecting rod (23) It is connect by external cylinder (232) with the movable stand (22), external cylinder (232) inner sidewall is equipped with axial slide (233), institute It states connecting rod (23) end and is equipped with the sliding block (234) being slidably connected with the axial slide (233).

6. a kind of sewage disposal system according to claim 2, it is characterised in that: the gag lever post includes and the bottom plate (34) the fixed external position-limiting drum (341) in bottom and the internal slide bar being connect with described external position-limiting drum (341) internal slide Body (342), external position-limiting drum (341) inner wall are equipped with sliding rail, and the internal slide body of rod (342) is equipped with matches with the sliding rail Close the guide protrusions used.

7. a kind of sewage disposal system according to claim 1, it is characterised in that: the agitator tank includes the first staving (61) and the second staving (62) switch valve (63), are equipped between first staving (61) and second staving (62)；It is described First rotating shaft (611) are equipped in first staving (61), the first rotating shaft (611) and the first of the first staving (61) outside Driving motor (612) connection, the first rotating shaft (611) are equipped with the agitator disk (614) being obliquely installed, first staving (61) Top is equipped with sludge import (613)；The second shaft (621) are equipped in second staving (62), second shaft (621) with External the second driving motor (622) connection of second staving (62), second shaft (621) are equipped with stirring rod (624), Second staving (62) bottom is equipped with sludge outlet (623).

8. a kind of sewage disposal system according to claim 7, it is characterised in that: the agitator disk (614) is provided with screw thread Opening.

9. a kind of sewage disposal system according to claim 7, it is characterised in that: the stirring rod (624) includes spiral The body of rod of shape.