CN109279710A - A kind of pretreatment system and method for semi-coke wastewater - Google Patents
A kind of pretreatment system and method for semi-coke wastewater Download PDFInfo
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- CN109279710A CN109279710A CN201811138031.8A CN201811138031A CN109279710A CN 109279710 A CN109279710 A CN 109279710A CN 201811138031 A CN201811138031 A CN 201811138031A CN 109279710 A CN109279710 A CN 109279710A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 141
- 239000000571 coke Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003139 buffering effect Effects 0.000 claims abstract description 35
- 238000005189 flocculation Methods 0.000 claims abstract description 35
- 230000016615 flocculation Effects 0.000 claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 56
- 238000000926 separation method Methods 0.000 claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 241000772415 Neovison vison Species 0.000 claims description 23
- 239000010786 composite waste Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 17
- 238000005191 phase separation Methods 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 11
- 238000004581 coalescence Methods 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 230000003311 flocculating effect Effects 0.000 claims description 6
- 238000013517 stratification Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 14
- 238000004065 wastewater treatment Methods 0.000 abstract description 7
- 238000005345 coagulation Methods 0.000 abstract description 3
- 230000015271 coagulation Effects 0.000 abstract description 3
- 230000000505 pernicious effect Effects 0.000 abstract description 2
- 239000004519 grease Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 12
- 239000007787 solid Substances 0.000 description 10
- 239000000725 suspension Substances 0.000 description 10
- 239000012071 phase Substances 0.000 description 9
- 239000006096 absorbing agent Substances 0.000 description 7
- 239000011280 coal tar Substances 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 230000000857 drug effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
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- 239000012530 fluid Substances 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
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- 239000002569 water oil cream Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of semi-coke wastewater processing system and methods, the processing system includes that sequentially connected buffering pretreatment unit, multiphase flow device for effectively separating, mixed flocculation plant and double medium filter devices, the buffering pretreatment unit, the multiphase flow device for effectively separating, the mixed flocculation plant and double medium filter devices are further connected to oil product collecting tank.Semi-coke wastewater pretreatment system of the invention is closed system, specific aim treatment process is used for every primary wastewater, so that waste water treatment efficiency is greatly improved compared to existing stewing process method, and next stage is arrived after every coagulation, not the problem of not interfere with each other between processing level, and can effectively solve the problem that pernicious gas leakage；Occupied area is small, and treatment effeciency is high.
Description
Technical field
The invention belongs to coal chemical industrial waste water processing technology fields, and in particular to a kind of pretreatment system of semi-coke wastewater and side
Method.
Background technique
Semi-coke wastewater is also known as semicoke waste water, refers to low-disintegration coal in middle low temperature distillation (about 600~800 DEG C) process and coal
Gas purification, a kind of industrial wastewater for being formed during the quenching of semi-coke steam, the waste water have " four high one is few " (high COD, high oil,
High ammonia nitrogen, high phenol, waste water yield are few) the characteristics of, wherein the substance containing a large amount of difficult to degrade, high toxicities and complicated component, such as
The substances such as ammonia, phenol, petroleum-type.
Still mature semi-coke wastewater pretreating process, semi-coke enterprise be not directly heavy by semi-coke wastewater warp both at home and abroad at present
After the quiescent settling of shallow lake pond, by water coal tar and solid suspension simply remove after directly as coke quenching water use.Sedimentation basin
The method low efficiency of sedimentation is influenced after processing that coal tar content and solid suspension content index are unstable in water by internal structure
It is fixed.
Since sedimentation basin is outdoor open pond, take up a large area, and since total volume is larger, cause to wastewater disposal basin
When middle addition wastewater treatment drug, pharmaceutical quantities are big, and drug reaction effect is poor, and waste water treatment efficiency is low；Another aspect semi-coke is useless
Contain a large amount of harmful substance in water, it is readily volatilized in open wastewater disposal basin or entered in air with steam, it pollutes
Environment.Therefore, to given off in semi-coke production process high concentrated organic wastewater effectively pre-processed it is extremely urgent, pretreatment
The high efficiency and reliability of system directly affect the normal operation of subsequent production technique.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of pretreatment systems of semi-coke wastewater
And method.The technical problem to be solved in the present invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of semi-coke wastewater pretreatment systems, including sequentially connected buffering pretreatment dress
It sets, multiphase flow device for effectively separating, mix flocculation plant and double medium filter devices, the buffering pretreatment unit, the multiphase
Stream device for effectively separating, the mixed flocculation plant and double medium filter devices are further connected to oil product collecting tank, wherein
The input terminal of the buffering pretreatment unit is connected with semi-coke wastewater efferent duct, for inputting the semi-coke wastewater,
And mink cell focus separating treatment is carried out, obtain mink cell focus and secondary waste water；
The multiphase flow device for effectively separating obtains three-level waste water for carrying out light oil separation to the secondary waste water；
The mixed flocculation plant obtains level Four waste water for carrying out flocculating setting to the suspended matter in the three-level waste water；
The output end of double medium filter devices connects drainage pipeline, for being filtered place to the level Four waste water
Reason, and be discharged from the drainage pipeline.
In a specific embodiment, the semi-coke wastewater efferent duct and it is described buffering pretreatment unit input terminal it
Between pipeline on be provided with static mixer, the first chemicals dosing plant is connected to static mixer by pipeline.
In a specific embodiment, the multiphase flow device for effectively separating includes hypergravity eddy flow pre-separation cylinder and more
Phase separation chamber, the inlet of the hypergravity eddy flow pre-separation cylinder are connect with the buffering pretreatment unit, the hypergravity rotation
The liquid outlet of stream pre-separation cylinder is connect with the multi-phase separation room；
Flow pattern adjustment device, level-one oil removing inclined plate, partition, coalescence are set gradually in the multi-phase separation room along its length
Device, second level oil removing inclined plate, every mud plate and overflow weir.
In a specific embodiment, the inner cavity of the mixed flocculation plant is provided with agitating device, the mixed flocculation dress
It sets through pipeline and the connection of the second chemicals dosing plant.
In a specific embodiment, pacify between the buffering pretreatment unit and the multiphase flow device for effectively separating
Equipped with the first booster pump, the second booster pump, institute are installed between the multiphase flow device for effectively separating and the mixed flocculation plant
It states and third booster pump is installed between mixed flocculation plant and double medium filter devices.
In a specific embodiment, further include full-automatic control system, the full-automatic control system respectively with institute
Buffering pretreatment unit, the multiphase flow device for effectively separating, the mixed flocculation plant and double medium filter devices is stated to connect
It connects, for the buffering pretreatment unit, the multiphase flow device for effectively separating, the mixed flocculation plant and double media
Filter device carries out signal control.
Another embodiment of the present invention provides a kind of semi-coke wastewater preprocess method, comprising the following steps:
Step 1: mink cell focus separating treatment being carried out to the semi-coke wastewater, obtains secondary waste water；
Step 2: light oil separation being carried out to the secondary waste water, obtains three-level waste water；
Step 3: flocculating setting being carried out to the suspended matter in the three-level waste water, obtains level Four waste water；
Step 4: being discharged after being filtered processing to the level Four waste water.
In a specific embodiment, the step 1 includes:
Demulsifier is added into the semi-coke wastewater；
Semi-coke wastewater after addition demulsifier is stood N hours, makes mink cell focus and water stratification, N is greater than 1.
In a specific embodiment, the step 2 specifically:
Hypergravity separation and flow pattern adjustment are carried out to the secondary waste water, obtain lightweight composite waste；
Coarse separation is carried out to the lightweight composite waste, makes mink cell focus, light oil, water, sludge layering, it is useless to obtain three-level
Water.
In a specific embodiment, the step 3 includes:
Flocculant is added into the three-level waste water；
Three-level waste water after addition flocculant is stirred.
Compared with prior art, beneficial effects of the present invention:
1, semi-coke wastewater pretreatment system of the invention is closed system, buffers pretreatment unit, multiphase flow by setting
Device for effectively separating, mixed flocculation plant and double medium filter devices, so that semi-coke wastewater is in flow regime during processing,
Four parts of system work at the same time, so that semi-coke wastewater treatment effeciency is higher, and can effectively solve the problem that pernicious gas leaks outside
The problem of；On the other hand, demulsifier is added in buffering pretreatment stage, flocculant is being added to the three-level wastewater treatment stage, this
The medicament of sample addition is more targeted, and medicament service efficiency is higher, therefore can reduce pharmaceutical use, reduces cost.
2, in the embodiment of the present invention, buffering pretreatment unit, multiphase flow device for effectively separating, mixed flocculation plant and double media
Filter device is further connected to oil product collecting tank, can effectively be handled semi-coke wastewater, while by institute in semi-coke wastewater
The coal tar and greasy filth contained is recycled, and the operating cost of environmental protecting device is considerably reduced, and is imitated to later period industrial applications
Fruit is especially pronounced.
3, the multiphase flow device for effectively separating in the embodiment of the present invention uses multiphase flow separation, coalescence technology, so that lightweight
On oil swims on water, mink cell focus and sludge deposition under water, realize waterborne oily and underwater oil efficiently separate；Eddy flow is set in device
The components such as pre-separation, flow pattern adjustment, coalescent pack, inclined plate are sufficiently high by Water-In-Oil, oil-in-water partial size molecule in secondary waste water
Effect separation, then coalescing devices is relied on efficiently to be coalesced, it realizes that oil droplet and water droplet become continuous phase from dispersed phase, guarantees to contain in water
Oil index requirement.
4, semi-coke wastewater pretreatment system provided by the invention and method handle work using specific aim for every primary wastewater
Skill, so that waste water treatment efficiency is greatly improved compared to existing stewing process method, and arrives next stage after every coagulation,
It is not interfere with each other between processing level, therefore is capable of handling a large amount of semi-coke wastewater.The present invention utilizes lesser place and resource energy
Enough solve the problem of pretreatment of a large amount of semi-coke wastewater.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of semi-coke wastewater pretreatment system provided by the invention；
Fig. 2 is the flow chart of semi-coke wastewater preprocess method provided by the invention；
Fig. 3 is the structural schematic diagram of multiphase flow device for effectively separating provided by the invention；
Fig. 4 is the structural schematic diagram of the hypergravity eddy flow pre-separation cylinder of multiphase flow device for effectively separating provided by the invention；
Fig. 5 is that the flow pattern of multiphase flow device for effectively separating provided by the invention adjusts the structural schematic diagram of device；
Fig. 6 is the energy absorber structural schematic diagram of multiphase flow device for effectively separating provided by the invention；
Fig. 7 is the structural schematic diagram of multiphase flow device for effectively separating level-one oil removing inclined plate provided by the invention；
Fig. 8 is the structural schematic diagram of multiphase flow device for effectively separating second level oil removing inclined plate provided by the invention；
Fig. 9 is the structural schematic diagram of multiphase flow device for effectively separating level-one coalescing devices provided by the invention；
Figure 10 is the structural schematic diagram of the second level coalescing devices of semi-coke wastewater multiphase flow device for effectively separating of the present invention；
Figure 11 is the structural schematic diagram of the overflow weir of multiphase flow device for effectively separating provided by the invention；
Figure 12 is the structural schematic diagram of the partition of multiphase flow device for effectively separating provided by the invention.
Description of symbols:
1, inlet；2, hypergravity eddy flow pre-separation cylinder；3, declining liquid tube；4, flow pattern adjusts device；5, energy absorber；6,
First sludge discharging port；7, level-one oil removing inclined plate；8, partition；9, level-one coalescing devices；10, second level coalescing devices；11, second level oil removing
Inclined plate；12, safety valve；13, exhaust outlet；14, oil-water interface tool；15, sample tap；16, water chamber liquidometer；17, overflow weir；
18, grease chamber liquidometer；19, oil outlet；20, support；21, discharge outlet；22, every mud plate；23, the second sewage draining exit；24, third blowdown
Mud mouth；25, shell；2-1, top plate；2-2, spiral plate；2-3, cylinder shell；2-4, support tube；4-1, liquid barrier；4-2, consolidate
Determine orifice plate；5-1, energy-absorbing plate；5-2 support frame；7-1, the first fixed plate；7-2 rib plate；9-1, the first stuffing frame；9-2, first are filled out
Material；10-1, the second stuffing frame；10-2, the second filler；11-1, the second fixed plate；11-2, rack gear.
Specific embodiment
Further detailed description is done to the present invention combined with specific embodiments below, but embodiments of the present invention are not limited to
This.
Embodiment one
In order to which the semi-coke wastewater pretreating process for overcoming the problems, such as present exists, is efficiently separated the present invention provides one kind and be
The semi-coke high concentrated organic wastewater recycling pretreatment system that system, reliable for operation, stable and contamination-free generate.
Specifically as shown in FIG. 1, FIG. 1 is the structural schematic diagrams of semi-coke wastewater pretreatment system provided in this embodiment；This
Embodiment provides a kind of semi-coke wastewater pretreatment system, including sequentially connected buffering pretreatment unit, multiphase flow efficiently separate
Device, mixed flocculation plant and double medium filter devices, wherein buffer the input terminal and semi-coke wastewater efferent duct phase of pretreatment unit
Even, semi-coke wastewater initially enters buffering pretreatment unit, which has the function of caching semi-coke wastewater, slows down semi-coke wastewater
Flow velocity, under gravity, mink cell focus and sludge deposition, light oil and waterborne floating realize the pre- of heavy coal tar and waste water
Separation, and buffer pretreatment unit and connected with oil product collecting tank, mink cell focus and greasy filth are settled down to buffering pretreatment unit bottom,
And enter oil product collecting tank, and the secondary waste water isolated then passes through pipeline and enters multiphase flow device for effectively separating.
It should be noted that the pipeline between the semi-coke wastewater efferent duct and the input terminal of the buffering pretreatment unit
On be provided with static mixer, the first chemicals dosing plant is connected to static mixer by pipeline.Specifically, the first chemicals dosing plant is used
In adding demulsifier into semi-coke wastewater, demulsifier mixes in static mixer with semi-coke wastewater.Due to the effect of demulsifier
Certain reaction time is needed, in the present invention, by just adding demulsifier before semi-coke wastewater enters pretreatment system, then
By the buffering preprocessing process of the first procedure, when semi-coke wastewater reaches in second operation work multiphase flow device for effectively separating
When, then demulsifier preferably can generate preferable drug effect to oil-water emulsion, and cooperation multiphase flow device for effectively separating can take
Obtain better break milk separation effect.Less dose may be implemented and generate better drug effect, save the use of pharmaceutical quantities, solve
The problem of drug effectiveness difference in the prior art.
Output pump, buffering pretreatment dress are additionally provided between semi-coke wastewater efferent duct and the input terminal for buffering pretreatment unit
It sets and the first booster pump is installed between multiphase flow device for effectively separating, the use of pump, so that become can for the flow velocity of semi-coke wastewater
Control also becomes controllable to the treating capacity of semi-coke wastewater in the unit time.
As shown in figure 3, multiphase flow device for effectively separating includes hypergravity eddy flow pre-separation cylinder and multi-phase separation room, it is described super
The inlet of gravity eddy flow pre-separation cylinder is connect with the buffering pretreatment unit, and the hypergravity eddy flow pre-separation cylinder goes out liquid
Mouth is connect with the multi-phase separation room；
Flow pattern adjustment device, level-one oil removing inclined plate, partition, coalescence are set gradually in the multi-phase separation room along its length
Device, second level oil removing inclined plate, every mud plate and overflow weir.
Specifically, secondary waste water enters hypergravity eddy flow pre-separation cylinder through inlet, pass through the eddy flow runner of inner setting
It carries out continuous phase water-oil separating and caches, subsequently into multi-phase separation room.
It should be noted that the first end of hypergravity eddy flow pre-separation cylinder is connect with inlet 1, hypergravity eddy flow pre-separation
The second end of cylinder 2 is fixedly connected with the shell 25 of multiphase flow device for effectively separating, under the second end of hypergravity eddy flow pre-separation cylinder 2
Side is equipped with declining liquid tube 3, flow pattern adjustment device 4 and energy absorber 5, declining liquid tube 3 and plays fluid guiding role to liquid flow direction；
As shown in figure 5, flow pattern adjustment device 4 is made of liquid barrier 4-1 and fixed orifice plate 4-2, effect is by mixing liquid
State adjustment, from turbulent layer to stratosphere transition；As shown in fig. 6, energy absorber 5 is made of energy-absorbing plate 5-1 and support frame 5-2, tool
Body, the first end of declining liquid tube is fixedly connected with inner walls, and is connected to hypergravity eddy flow pre-separation cylinder；The declining liquid tube
Second end is fixedly connected with flow pattern adjustment device；Flow pattern adjustment device is immobilized in the shell on wall；Energy absorber and shell
Internal wall is fixedly connected, and the lower section of flow pattern adjustment device is arranged in.
As shown in figure 4, hypergravity eddy flow pre-separation cylinder 2 includes: top plate 2-1, spiral plate 2-2, cylinder shell 2-3 and branch
Stay tube 2-4；Wherein, top plate is set to the top of the cavity of cylinder shell composition, and is fixedly connected with cylinder shell；Spiral
Plate is set to the inside of the cavity of cylinder shell composition, and spirals about support tube and be fixedly connected；One end and top of support tube
Plate is fixedly connected.Since spiral plate is fixed on support tube, and have gap between spiral plate and cylinder shell, support tube also with
Top plate is fixed, so the screw of hypergravity eddy flow pre-separation cylinder 2 of the invention can be extracted out from cylinder, very convenient dimension
Repair replacement.Hypergravity eddy flow pre-separation cylinder 2 of the invention, cylinder is bolted and fixed with shell 25, internal helicoid plate
Fluid course is formed, grease items centrifugal force can effectively be enhanced by the shape and size that design runner, thus will mixing
The alternate sufficient making contact of grease in liquid improves the alternate isolated efficiency of grease, and inner flow passage screw pitch is 50~500mm,
The screw pitch of the size can be most optimally by so that mink cell focus, greasy filth and lightweight composite waste be layered, and different pitch dimensions produces
Raw centrifugal force variation, causes effect different.2 material of hypergravity eddy flow pre-separation cylinder can be metal or non-according to dielectric property
Metal.
Specific working principle are as follows: will be so that weight under the centrifugal action that secondary waste water passes through hypergravity eddy flow pre-separation cylinder 2
Matter oil, greasy filth and the layering of lightweight composite waste, subsequently into the declining liquid tube 3 of 2 lower section of hypergravity eddy flow pre-separation cylinder, declining liquid tube 3
To mink cell focus, greasy filth and lightweight composite waste carry out water conservancy diversion enter flow pattern adjustment device 4 in, and mink cell focus, greasy filth and
Lightweight composite waste generates shock to the energy-absorbing plate 5-1 of energy absorber 5 under the effect of gravity, further strengthens demulsification, completes
The alternate initial gross separation of grease, mink cell focus and greasy filth settle under the effect of impact of energy-absorbing plate 5-1 at this time, and the lightweight of initial gross separation is mixed
Close waste water by flow pattern adjust device 4 on multiple through-holes on influxs flow pattern adjust device 4 upper layer, by sludge with
Solid suspension is blocked in lower layer, completes the initial gross separation of silt particle and solid suspension, and mink cell focus and greasy filth pass through the first blowdown
6 outlets of mouth, lightweight composite waste enter multi-phase separation room.
The combined use of hypergravity cylinder 2, manifold adjustment device 4 and energy absorber 5, to the active water of semi-coke wastewater
Demulsification is washed, the hydraulics of multi-phase separation are improved, accelerates oil, water, sludge and solid suspension separating rate.
Further, lightweight composite waste is mutually divided after entering multi-phase separation room by level-one oil removing inclined plate progress grease again
From being set to declining liquid tube 3 and flow pattern point as shown in fig. 7, level-one oil removing inclined plate 7 is made of the first fixed plate 7-1 and rib plate 7-2
Cloth adjusts the right side of device 4, and is fixedly connected with the inner wall of the shell of multiphase flow device for effectively separating 25, and lightweight composite waste is logical
After crossing this plate, each gravity mutually generated according to density of grease is different, by that can enhance grease alternate separative efficiency when rib plate.This hair
The inclined plate height of bright level-one oil removing inclined plate 7 is 0.1~2m, and tilt angle is 50~75 °.Part greasy filth and solid suspension by every
The gear of plate 8 stays, and partition 8 is arranged between level-one oil removing inclined plate 7 and level-one coalescing devices 9, on the vertical fixed inner wall of shell 25 again,
Structure is as shown in figure 12, for reducing the greasy filth and fixed suspended matter that enter level-one coalescing devices 9.It should be noted that partition 8
It keeps off the position stayed and is provided with sewage draining exit, sewage draining exit is connected with oil product collecting tank, and greasy filth and solid suspension pass through sewage draining exit outlet.
Further, lightweight composite waste enters level-one coalescing devices 9 after level-one oil removing inclined plate 7, as shown in figure 9, one
Grade coalescing devices 9 are made of the first stuffing frame 9-1 and the first filler 9-2, and effect is primary emulsification that can be alternate by grease
Liquid is demulsified, is coalesced, in level-one coalescing devices 9 can oil by partial size less than 80 microns, water drop carry out alternate demulsification
Coalescence carries out same phase coalescence according to oil, the difference of hydrone surface tension, completes the preliminary coarse separation of grease, and subsequent lightweight is mixed
It closes waste water and enters second level coalescing devices 10, as shown in Figure 10, second level coalescing devices 10 have the second stuffing frame 10-1 and the second filler
10-2 composition, effect is that the alternate remaining emulsion of the grease after coalescing level-one is demulsified, is coalesced, in second level coalescing devices
In can further speed up alternate partial size be greater than 80 microns of oil, hydrone drop less than 100 microns coalescence.
Further, lightweight composite waste enters second level oil removing inclined plate through second level coalescing devices, as shown in figure 8, second level is removed
Oily inclined plate 11 is made of the second fixed plate 11-1 and rack gear 11-2, is set to the right side of second level coalescing devices, and with shell 25
Inner wall is fixedly connected, and mutually passes through rack gear 11- by the grease after level-one oil removing inclined plate, level-one coalescing devices and second level coalescing devices
Oil-water emulsion surface tension can be destroyed after 2, the gravity then generated according to the density of each phase of grease is different, further increases
The alternate separative efficiency of grease.Then the lightweight composite waste by oily aqueous phase separation enters separating flowing field, in the present embodiment, separation
Smoothness is the advection area in multi-phase separation room, specifically, providing stabilization equipped with advection section in separating flowing field for grease drop
Flow field condition, under the stable advection environment, according to density contrast, between mink cell focus/greasy filth sinks, light oil floats, water is placed in the middle.
It should be noted that the bottom in advection area is additionally provided with third sewage draining exit 24, the greasy dirt discharge for that will build up.
Specifically, being provided in multi-phase separation room every mud plate 22 and overflow weir 17, lightweight composite waste passes through every mud plate
22 enter effluent storage area, and overflow weir 17 is arranged in effluent storage area, and the structure of overflow weir 17 is as shown in figure 11, every mud plate 22
The greasy filth in advection area is stopped, three-level waste water passes through, and overflow weir 17 stops three-level waste water, and the oil slick on waste water upper layer is by overflowing
It flows weir plate 17 and enters oil product storage room, greasy filth Resistance is provided with the second sewage draining exit 23, greasy filth is discharged, and effluent storage area is also set
It is equipped with discharge outlet 21, is connect by pipeline with mixed flocculation plant, oil product storage room is provided with oil discharge outlet 19.
It should be noted that the depth of packing of level-one coalescing devices 9 of the present invention: 0.3~4m, oil removal rate are 90~95%,
Porosity is 70~85%；The depth of packing of second level coalescing devices 10 is 0.3~4m, and oil removal rate is 95~99%, and porosity is
85~90%.
In the present embodiment, multiphase flow device for effectively separating uses high-efficiency cyclone isolation technics, dedicated coalescence technology, improves and divides
From speed, the sedimentation time is reduced, multiphase flow device for effectively separating is sufficiently by Water-In-Oil, oil-in-water partial size molecule in secondary waste water
It efficiently separates, then core component is relied on efficiently to be coalesced, realize that oil droplet and water droplet become continuous phase from dispersed phase, realize grease
Efficient coarse separation, guarantee water in oil-containing index request, provide qualified continuous-stable water quality for new technology last part technology.
It should be noted that the top of the shell 25 of multiphase flow device for effectively separating of the invention is additionally provided with safety valve
12, exhaust outlet 13, oil-water interface tool 14, sample tap 15, water chamber liquidometer 16 and grease chamber liquidometer 18；Wherein water chamber liquidometer 16
On shell 25 before overflow weir 17 is arranged in, grease chamber liquidometer 18 is arranged on the shell 25 after overflow weir 17.
Semi-coke wastewater multiphase flow device for effectively separating of the invention further includes pedestal 20, and there are two pedestals 20, and shell 25 is logical
Cross pedestal 20 by whole device fix on the ground or other fixtures on.
Further, the inner cavity of the mixed flocculation plant is provided with agitating device, the mixed flocculation plant by pipeline and
The connection of second chemicals dosing plant.
Second booster pump is installed between multiphase flow device for effectively separating and mixed flocculation plant, is equipped in mixed flocculation plant
Agitating device, when three-level waste water flow at high speed under the action of the second booster pump, the second chemicals dosing plant to high speed enter three
Flocculant is added in grade waste water, so that three-level waste water is sufficiently mixed with medicament, then by agitating device stirring action, accelerates drug effect
Reaction, so that flocculating effect is more preferable, reaction speed faster, improves flocculation settling velocity, and the solid quickly removed in waste water suspends
Object.Treated, and level Four waste water enters double medium filter devices.
Further, third booster pump is installed between the mixed flocculation plant and double medium filter devices.Third
Booster pump can control the speed into double medium filter devices, guarantee physical filtering quality.Still containing few in level Four waste water
Amount oil and floccule, double medium filter devices are last one of physical filtering process of pretreatment system, are internally provided with gravel
Supporting layer, coarse sands layer, fine sand layer, anthracite coal measure (contain coal tar in waste water and solid suspension processing to qualified index in water
Oil≤
500mg/L, suspension content≤20mg/L), treated, and waste water enters aftertreatment systems.
Buffering pretreatment used by above-described embodiment+efficiently multiphase flow separation+mixes the work of flocculation treatment+bis- media filtrations
Skill process, effectively by waste water coal tar and solid suspension handled, after processing contain oil content≤500mg/L, hang
Floating object content≤20mg/L provides new pretreating process technology to the recycling comprehensive treatment of semi-coke wastewater, is semi-coke row
The development of industry green circulatory lays the foundation.
Further, it should be noted that pretreatment system provided in this embodiment further includes full-automatic control system, institute
Full-automatic control system is stated to fill with the buffering pretreatment unit, the multiphase flow device for effectively separating, the mixed flocculation respectively
It sets and is connected with double medium filter devices, for the buffering pretreatment unit, the multiphase flow device for effectively separating, institute
It states mixed flocculation plant and double medium filter devices carries out signal control.
The buffering pretreatment unit, the multiphase flow device for effectively separating, the mixed flocculation plant and double media
Starting, pause, operating and other internal controls of filter device etc. are controlled by full-automatic control system.Operator
It only needs to operate full-automatic control system, the control to links in this pretreatment system can be completed.
Embodiment two
On the basis of the above embodiments, the embodiment of the present invention utilizes buffering pretreatment dress sequentially connected in embodiment one
It sets, multiphase flow device for effectively separating, mix flocculation plant and double medium filter devices to semi-coke wastewater progress preprocess method, specifically
Implementation process as shown in Fig. 2, Fig. 2 be semi-coke wastewater preprocess method provided in this embodiment flow chart.This semi-coke wastewater
Preprocess method the following steps are included:
Step 1: mink cell focus separating treatment being carried out to the semi-coke wastewater, obtains secondary waste water；Specifically, using static mixed
Demulsifier is added into the semi-coke wastewater in clutch；Semi-coke wastewater after addition demulsifier is stood in buffering pretreatment unit
N hours, make mink cell focus and water stratification, mink cell focus enters oil product collecting tank, and secondary waste water is discharged by pipeline, wherein waste water is quiet
The time is set according to the setting of the integrated conditions such as actual waste water amount, the reaction speed of demulsifier and temperature condition.
It should be noted that the specific time of repose of semi-coke wastewater needs combined water and temperature condition to be set, herein
It is not specifically limited.
Step 2: light oil separation being carried out to the secondary waste water, obtains three-level waste water；Specifically, efficient using multiphase flow
The hypergravity eddy flow pre-separation cylinder of separator carries out hypergravity separation to the secondary waste water, obtains lightweight composite waste；?
Multi-phase separation room carries out oil removing, coarse separation to the lightweight composite waste, makes mink cell focus/greasy filth, three-level waste water water, light oil point
Layer, and be discharged by different outlets.
Step 3: flocculating setting being carried out to the suspended matter in the three-level waste water, obtains level Four waste water；Specifically, to mixed wadding
Flocculant is added in solidifying device；To addition flocculant after three-level waste water be stirred, accelerate suspended substance sedimentation, qualified waste water into
Enter double medium filter devices.
Step 4: being discharged after being filtered processing to the level Four waste water.Specifically, double medium filter devices are to entrance
Level Four waste water carries out physical filtering, further removes oil and suspended contamination in level Four waste water.
The technical solution adopted in the present invention is mainly shown as using buffering pretreatment+efficiently multiphase flow separation+mixed flocculation
The process flow of processing+bis- media filtrations.Specific aim treatment process is used for every primary wastewater, so that waste water treatment efficiency phase
It is greatly improved than existing stewing process method, and arrives next stage after every coagulation, handle and do not interfere with each other between level,
Therefore it is capable of handling a large amount of semi-coke wastewater.The present invention is able to solve a large amount of semi-coke wastewater using lesser place and resource
Problem of pretreatment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of semi-coke wastewater pretreatment system, which is characterized in that high including sequentially connected buffering pretreatment unit, multiphase flow
Effect separator, mixed flocculation plant and double medium filter devices, the buffering pretreatment unit, the multiphase flow efficiently separate dress
It sets, the mixed flocculation plant and double medium filter devices are further connected to oil product collecting tank, wherein
The input terminal of the buffering pretreatment unit is connected with semi-coke wastewater efferent duct, for inputting the semi-coke wastewater, goes forward side by side
Row mink cell focus separating treatment, obtains mink cell focus and secondary waste water；
The multiphase flow device for effectively separating obtains three-level waste water for carrying out light oil separation to the secondary waste water；
The mixed flocculation plant obtains level Four waste water for carrying out flocculating setting to the suspended matter in the three-level waste water；
The output end of double medium filter devices connects drainage pipeline, for being filtered processing to the level Four waste water, and
It is discharged from the drainage pipeline.
2. pretreatment system according to claim 1, which is characterized in that the semi-coke wastewater efferent duct and the buffering are pre-
Static mixer is provided on pipeline between the input terminal of processing unit, the first chemicals dosing plant is connected to static mixed by pipeline
Clutch.
3. pretreatment system according to claim 1, which is characterized in that the multiphase flow device for effectively separating includes overweight
Power eddy flow pre-separation cylinder and multi-phase separation room, the inlet and the buffering pretreatment unit of the hypergravity eddy flow pre-separation cylinder
Connection, the liquid outlet of the hypergravity eddy flow pre-separation cylinder are connect with the multi-phase separation room；
Flow pattern adjustment device, level-one oil removing inclined plate, partition, coalescence dress are set gradually in the multi-phase separation room along its length
Set, second level oil removing inclined plate, every mud plate and overflow weir.
4. pretreatment system according to claim 1, which is characterized in that the inner cavity of the mixed flocculation plant is provided with stirring
Device, the mixed flocculation plant are connected by pipeline and the second chemicals dosing plant.
5. pretreatment system according to claim 1, which is characterized in that the buffering pretreatment unit and the multiphase flow
First booster pump is installed between device for effectively separating, is pacified between the multiphase flow device for effectively separating and the mixed flocculation plant
Equipped with the second booster pump, third booster pump is installed between the mixed flocculation plant and double medium filter devices.
6. pretreatment system according to claim 1, which is characterized in that further include full-automatic control system, it is described it is complete from
Autocontrol system respectively with the buffering pretreatment unit, the multiphase flow device for effectively separating, the mixed flocculation plant and institute
Double medium filter device connections are stated, for the buffering pretreatment unit, the multiphase flow device for effectively separating, the mixed wadding
Solidifying device and double medium filter devices carry out signal control.
7. a kind of semi-coke wastewater preprocess method, which comprises the following steps:
Step 1: mink cell focus separating treatment being carried out to the semi-coke wastewater, obtains secondary waste water；
Step 2: light oil separation being carried out to the secondary waste water, obtains three-level waste water；
Step 3: flocculating setting being carried out to the suspended matter in the three-level waste water, obtains level Four waste water；
Step 4: being discharged after being filtered processing to the level Four waste water.
8. semi-coke wastewater preprocess method according to claim 7, which is characterized in that the step 1 includes:
Demulsifier is added into the semi-coke wastewater；
Semi-coke wastewater after addition demulsifier is stood N hours, makes mink cell focus and water stratification.
9. semi-coke wastewater preprocess method according to claim 7, which is characterized in that the step 2 specifically:
Hypergravity separation and flow pattern adjustment are carried out to the secondary waste water, obtain lightweight composite waste；
Coarse separation is carried out to the lightweight composite waste, makes mink cell focus, light oil, water, sludge layering, obtains three-level waste water.
10. semi-coke wastewater preprocess method according to claim 7, which is characterized in that the step 3 includes:
Flocculant is added into the three-level waste water；
Three-level waste water after addition flocculant is stirred.
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