CN108623073A - A kind of recycling method of the papermaking wastewater generated using waste paper pulp-making process - Google Patents
A kind of recycling method of the papermaking wastewater generated using waste paper pulp-making process Download PDFInfo
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- CN108623073A CN108623073A CN201810281029.XA CN201810281029A CN108623073A CN 108623073 A CN108623073 A CN 108623073A CN 201810281029 A CN201810281029 A CN 201810281029A CN 108623073 A CN108623073 A CN 108623073A
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- 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
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- 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
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- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/484—Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets
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- 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
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- 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
- C02F2001/007—Processes including a sedimentation step
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- 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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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Abstract
The invention discloses a kind of recycling methods of the papermaking wastewater generated using waste paper pulp-making process, present invention process is simple, processing cost is low, processing procedure need not use chemicals, and expendable consumptive material need not be used, it safeguards simple and convenient, it is recycled using papermaking wastewater, reduce the usage amount of chemicals, the papermaking wastewater that papermaking enterprise need not generate pulping process is drained to sewage purifier purified treatment, 50 60% are reduced using the workload of sewage purifier, papermaking enterprise cost of sewage disposal is greatly lowered, production process is more energy-saving and environmentally friendly, cleanliness without any pollution.
Description
Technical field
The present invention relates to technology for the treatment of of papermaking wastewater fields, are made using what waste paper pulp-making process generated more particularly, to a kind of
The recycling method of paper sewage.
Background technology
Based on the ecological requirements that the demand and waste paper resources that reduce production cost recycle, corrugated paper and ox-hide are produced
The papermaking enterprise of paper is all to generate paper pulp using the waste paper of recycling and waste paper board, and using the paper pulp for producing corrugation
Paper and brown paper.But paper grade pulp is produced using waste paper and waste paper board, it is needed using a large amount of chemistry in pulping process
Preparation contains a large amount of chemicals in the papermaking wastewater that pulping generates, and the papermaking wastewater that pulping generates is cannot directly outer row
, it is therefore desirable to purified treatment is carried out to it.
There are many directions to the recycling of chemicals, method universal at present includes distilling, extracting and purify etc., still,
The shredded paper ton amount of the paper shredding barrel in paper mill is generally 5-20 tons, needs pulping is tens of to arrive hundreds of buckets daily, therefore, a papermaking enterprise
The industry papermaking wastewater that only pulping generates daily just has hundreds of tons to thousands of tons of, and the day sewage ton amount of a papermaking enterprise is equivalent to one
The day sewage ton amount of a medium-and-large-sized industry park, and the type of the chemicals in the papermaking wastewater of pulping process generation is more, needs
Different chemicals is extracted and recycle respectively in batches by different methods, it is clear that the recycling side of traditional chemicals
The cost of method will be very high, and force and be lost will be very big for the load of reclaimer, and equipment life is also greatly shortened, hence it is evident that
It cannot be applicable in.
In addition, for economic benefit angle, papermaking enterprise generally uses the method processing pulping of purified treatment to generate
Papermaking wastewater recycles the cost of chemicals far above the cost for buying new chemicals, and cost significantly larger than purifies chemistry
The cost of preparation, therefore, traditional chemicals recovery method are not particularly suited for this day processing ton amount and reach hundreds of tons even number
The processing of the papermaking wastewater of kiloton amount, it is therefore necessary to be improved.
Invention content
In view of the deficienciess of the prior art, being made using what waste paper pulp-making process generated the object of the present invention is to provide a kind of
The recycling method of paper sewage, simple for process, input cost is low, and the papermaking wastewater that pulping process is generated recycles, drop
Low treatment pressure of sewage and production cost improve productivity effect.
To achieve the goals above, the technical solution adopted in the present invention is：It is a kind of to be generated using waste paper pulp-making process
The recycling method of papermaking wastewater, includes the following steps,
1) papermaking wastewater step, is collected, by the buffer pool for being built in the pulping bottom of the barrel for waste paper to be broken into paper pulp
It receives pulping bottom of the barrel and emits papermaking wastewater, by multiple by-pass channels for being respectively communicated with buffer pool respectively quickly by buffer pool
Interior papermaking wastewater shunts away, and be respectively delivered to garbage reclamation canal enters head piece, along the direction of advance of papermaking wastewater, shunting
The floor height of canal is gradually reduced；
2), classified filtering step, papermaking wastewater flow into and from the head piece that enters of garbage reclamation canal from garbage reclamation canal
Outflow port flows out, and garbage reclamation canal, which is obliquely installed and enters head piece, is higher than outflow port, and classified filtering includes,
2.1) multiple hooks, are drawn in garbage reclamation by being fixed on the first hanger rail of the top of the leading portion of garbage reclamation canal
Canal and the loopy moving between the garbage pool of garbage reclamation canal side is set；
When hook moves to garbage reclamation canal middle section position, the lower end of hook is inserted to garbage reclamation canal bottom, and hook court
Enter head piece stem to garbage reclamation canal, film, polybag and large volume rubbish are hooked by hook and take away rubbish and is returned
Receive canal；
When hook moves to above garbage pool, so that hook is overturn and lose the film hooked, polybag and large volume rubbish
Enter in garbage pool；
2.2) rubbish of papermaking wastewater, is collected embedded in the screen frame classification of the posterior segment of garbage reclamation canal by multiple activities
Or impurity, screen frame front end face offers opening, rear end face is covered with mesh, and the width phase of the width of screen frame and garbage reclamation canal
Match, the height of screen frame is more than the inner height of garbage reclamation canal；
Screen frame is hung by the second hanger rail of the top mounted on the posterior segment of garbage reclamation canal and is moved to above garbage pool, and
New screen frame is set to the corresponding position of garbage reclamation canal；
3) papermaking wastewater flowed out from the outflow port of garbage reclamation canal is delivered in sedimentation basin, sedimentation basin by, settling step
It is provided with the intake pool and stilling basin of bottom connection, intake pool and stilling basin separated by partition wall, and the bottom of intake pool passes through more
The bottom of the bottom of a through-hole or straight slot connection stilling basin, intake pool is filled with quartz sand, and the papermaking wastewater in intake pool is logical
It crosses through-hole or straight slot enters in stilling basin；
4), boundling electromagnetism walks decomposition step, extracts papermaking wastewater from the middle and upper part of stilling basin by water pump, and be delivered to more
The top of the bottom tapping cone of a inverted cone shape, shunting cone top be non-metallic material be made, the point of bottom
Be made using silicon steel, papermaking wastewater from shunting cone base tip under drip, under drip stream in thin cylindrical shape flow column,
And fall into the sorting pool of lower section；
The electromagnet for coming close to or in contact with point by being built in the inner cavity of shunting cone generates axial magnetic field, and magnetic field is strong
Degree is 5000-8000 Gausses, and point is made to form a magnetic pole point, forms a magnetic field origin at the tip of point, and in magnetic field
The magnetic field of a cone shape is formed below origin；Papermaking wastewater in the point and sorting pool that shunt cone is electrically connected respectively
The DC voltage that voltage is 80-100V is connect, point is formed simultaneously a direct current pole, and flow column then forms a thin cylinder
The vertical electric field of shape；
The papermaking wastewater at the tip of point is flowed to when by direct current pole and magnetic field origin, makes to be dissolved in papermaking
Metallic element moment ionization in sewage, the ink moment being dissolved in papermaking wastewater resolve into small molecule ink, are dissolved in
Lower fatty acid moment in papermaking wastewater resolves into small molecule aliphatic acid, unstable under electric field action in flow column
Ionized metal element, small molecule ink, small molecule aliphatic acid and pectin, resin and the ash content knot being dissolved in papermaking wastewater
It closes, and condenses the loose type coagulation for forming that density is 0.6-0.7, and flow column limits the volume of loose type coagulation, puts down
Equal size controlling is in 1-3mm；
5), multi_layer extraction step flows into the papermaking wastewater in sorting pool, is made since the density of loose type coagulation is much smaller than
The density of paper sewage, loose type coagulation floating upward quickly, and a superposed layer is formed above sorting pool, upper layer is extracted by water pump
Loose type coagulation,
6) it, recycles, the papermaking wastewater of lower layer is extracted by water pump, obtain pulping cycling use of water, pulping cycle
With chemicals needed for pulping is contained in water, it is pumped back to the recycling of pulping bucket.
In further technical solution, in the classified filtering step, pass through the rotation pass mounted on the hook top
Section rotation hook is to realize rotation hook；Film, polybag and big are lived by the multiple arcuation iron fork hooks for being arranged in hook lower part
Volume rubbish, iron fork outer end upwarp.
In further technical solution, in the classified filtering step,
In the posterior segment of the garbage reclamation canal, made by the bumping post of multiple bottom surfaces for being fixed on garbage reclamation canal and side
Mud generates turbulent flow, and to avoid sludge settling, bumping post is arranged between adjacent screen frame.
In further technical solution, in the classified filtering step,
Suspension hook by operating in second hanger rail slings screen frame by hooking the hanging ring of screen frame front；
Screen frame is set to be located in garbage reclamation canal by the blend stop of garbage reclamation canal both sides supports screen frame；
The screen frame includes coarse mesh screen frame, middle mesh screen frame and fine mesh screen frame, in garbage reclamation canal posterior segment, rubbish
It recycles and is sequentially equipped with multiple coarse mesh screen frames, multiple middle mesh screen frames and multiple fine mesh screen frames, coarse net in canal from front to back
The mesh of the rear end face of hole screen frame is more than the mesh of the rear end face of middle mesh screen frame, and the mesh of the rear end face of middle mesh screen frame is more than
The mesh of the mesh of the rear end face of fine mesh screen frame, coarse mesh screen frame is 3-5cm, and the mesh of middle mesh screen frame is 1-2cm, fine-structure mesh
Hole screen frame mesh is 0.1-0.3cm.
In further technical solution, in the settling step,
The bottom of the intake pool and the stilling basin is filled with quartz sand, and the height of quartz sand is higher than through-hole or straight slot
Height, stop that sludge in papermaking wastewater and impurity by through-hole or straight slot, and make the dirt in papermaking wastewater by quartz sand
Mud and little particle contamination precipitation to realize filter sludge, and are buried through-hole or led to by quartz sands above the quartz sand of intake pool
Slot can papermaking wastewater water supply pass through, the quartz sand in stilling basin makes the papermaking wastewater in stilling basin keep tranquil；
Quartz sand is periodically transferred to washed-out sand pond, rifle is rushed using high pressure and cleans, to realize recycling quartz sand.
In further technical solution, in the boundling electromagnetism step decomposition step,
It is first pumped to bypass channel from the extraction papermaking wastewater of the stilling basin, papermaking wastewater is first along the length direction of bypass channel
Lateral flow is to the top surface of each shunting cone, then the conical surface along each shunting cone flows downward to tip respectively,
The conical surface forms a thin water layer, is dripped still further below after collecting below tip and forms the flow column；
Bypass channel extends close to the side of the sorting pool and along sorting pool width direction, and each flow column is between matrix
Every the side for arranging and being dropped in sorting pool.
In further technical solution, in the multi_layer extraction step,
The sorting pool is isolated to form a separate tank and a clear water reserviors via intermediate membrane, be separated by partition separate tank and
Clear water reserviors may not flow into clear water reserviors with the loose type coagulation obstructed in separate tank, separate tank made to be connected to clear water reserviors bottom,
So that the clear water of separate tank lower layer is flowed into clear water reserviors；
A suction hood is placed in the side far from flow column, suction hood connects water pump, and suction hood suspends and balances above separate tank,
The loose type coagulation on separate tank upper layer is extracted by suction hood.
The invention has the advantages that compared with the prior art,：Present invention process is simple, and processing cost is low, processing procedure
Chemicals need not be used, and expendable consumptive material need not be used, maintenance is simple and convenient, and being able to cycle using papermaking wastewater makes
With reducing the usage amount of chemicals, the papermaking wastewater that papermaking enterprise need not generate pulping process is drained to sewage purification
Equipment clean processing reduces 50-60% using the workload of sewage purifier, is greatly lowered at papermaking enterprise sewage
Cost is managed, there is higher comprehensive productivity effect, and production process is more energy-saving and environmentally friendly, cleanliness without any pollution.
Description of the drawings
Fig. 1 is that the schematic diagram of buffer pool is built in the pulping bucket lower section of the present invention.
Fig. 2 is schematic diagram of the present invention by the classification recycling of garbage reclamation canal.
Fig. 3 is schematic diagram of the present invention by coprecipitation mode filter sludge.
Fig. 4 is the schematic diagram that the boundling electromagnetism step of the present invention is decomposed.
1, pulping bucket 11, by-pass channel 12, buffer pool.
2, garbage reclamation canal 21, the first hanger rail 22, hook 23, rotary joint 24, blend stop 25, coarse mesh screen frame 26, middle net
Hole screen frame 27, fine mesh screen frame.
31, intake pool 32, stilling basin 33, quartz sand.
4, cone 41, point 42, flow column 43, electromagnet 44, separate tank 45, clear water reserviors 46, suction hood 47, Fen Shui are shunted
Slot.
Specific implementation mode
As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
A kind of recycling method of the papermaking wastewater generated using waste paper pulp-making process, is included the following steps,
1, papermaking wastewater step is collected, shown in Fig. 1, by being built in 1 bottom of pulping bucket for waste paper to be broken into paper pulp
Buffer pool 12 receive 1 bottom discharge of pulping bucket and come out papermaking wastewater, pass through multiple by-pass channels 11 for being respectively communicated with buffer pool 12
Quickly the papermaking wastewater in buffer pool 12 is shunted away respectively, and be respectively delivered to garbage reclamation canal 2 enters head piece, along papermaking
The floor height of the direction of advance of sewage, by-pass channel 11 is gradually reduced；The volume of pulping bucket 1 is about 10 tons, after each pulping
Papermaking wastewater is up to 5 tons, and papermaking dirt discharge capacity is big, and papermaking dirt row's speed is fast, and therefore, it is necessary to, into row buffering, and be led to by buffer pool 12
11 quick drainage of by-pass channel is crossed, papermaking wastewater overflow is avoided and pollutes workshop.
2, classified filtering step, shown in Fig. 2, papermaking wastewater flows into and from the head piece that enters of garbage reclamation canal 2 from rubbish
The outflow port outflow of canal 2 is recycled, garbage reclamation canal 2, which is obliquely installed and enters head piece, is higher than outflow port, and classified filtering includes,
2.1, multiple hooks 22 are drawn in rubbish by being fixed on the first hanger rail 21 of the top of the leading portion of garbage reclamation canal 2
It recycles canal 2 and the loopy moving between the garbage pool of 2 side of garbage reclamation canal is set；
Hook 22 is rotated by the rotary joint 23 mounted on 22 top of the hook to realize rotation hook 22；By setting
It sets multiple arcuation iron fork hooks in 22 lower part of hook and lives film, polybag and large volume rubbish, iron fork outer end upwarps.
When hook 22 moves to garbage reclamation 2 middle section position of canal, the lower end of hook 22 is inserted to 2 bottom of garbage reclamation canal, and
Hook 22 enters head piece stem towards garbage reclamation canal 2, and film, polybag and large volume rubbish are hooked simultaneously by hook 22
Take away garbage reclamation canal 2；
When hook 22 moves to above garbage pool, hook 22 is made to overturn and by the film hooked, polybag and large volume rubbish
Rubbish is lost in garbage pool, and during pulping, plastic garbage and bulky refuse in waste paper are all discharged with papermaking wastewater, this step
Rapid main purpose is the bulky refuse removed in papermaking wastewater, wherein based on plastic garbage.
2.2, the rubbish of papermaking wastewater is collected embedded in the screen frame classification of the posterior segment of garbage reclamation canal 2 by multiple activities
Or impurity, screen frame front end face offers opening, rear end face is covered with mesh, and the width phase of the width of screen frame and garbage reclamation canal 2
Matching, the height of screen frame are more than the inner height of garbage reclamation canal 2；
Screen frame is hung by the second hanger rail of the top mounted on the posterior segment of garbage reclamation canal 2 and is moved to above garbage pool,
And new screen frame is set to the corresponding position of garbage reclamation canal 2, screen frame is supported by the blend stop 24 of 2 both sides of garbage reclamation canal
And screen frame is made to be located in garbage reclamation canal 2；
In the posterior segment of the garbage reclamation canal 2, pass through the bumping post of multiple bottom surfaces and side for being fixed on garbage reclamation canal 2
Mud is set to generate turbulent flow, to avoid sludge settling, bumping post is arranged between adjacent screen frame.
Suspension hook by operating in second hanger rail slings screen frame by hooking the hanging ring of screen frame front, and screen frame cycle makes
With；
The screen frame includes coarse mesh screen frame 25, middle mesh screen frame 26 and fine mesh screen frame 27, in garbage reclamation canal 2 after
Section, multiple coarse mesh screen frames 25, multiple middle mesh screen frames 26 and multiple fine-structure meshes are sequentially equipped in garbage reclamation canal 2 from front to back
Hole screen frame 27, the mesh of the rear end face of coarse mesh screen frame 25 are more than the mesh of the rear end face of middle mesh screen frame 26, middle mesh screen frame
The mesh of 26 rear end face is more than the mesh of the rear end face of fine mesh screen frame 27, wherein
The mesh of coarse mesh screen frame 25 is 3-5cm, for collecting the Large Solid State impurity in papermaking wastewater,
The mesh of middle mesh screen frame 26 is 1-2cm, for collecting the medium-sized solid impurity in papermaking wastewater,
27 mesh of fine mesh screen frame is 0.1-0.3cm, for collecting most of sludge in papermaking wastewater and other small-sized
Solid impurity.
It is classified by screen frame and collects solid impurity, be both avoided that blocking, collection efficiency is high, and is convenient to different solid-states
Impurity carries out classification processing.
The papermaking wastewater flowed out from outflow port is not fixed impurity and only has the minitype particle that grain size is less than 0.1cm, wherein with dirt
Based on mud.Classified filtering step is filtered using mechanical system and physics mode, and substep carries out in a manner of classified filtering, simply
It is convenient, it is at low cost, it is easy to implement, it is easy to carry out after-treatment to the rubbish that separating and filtering comes out.
The papermaking wastewater flowed out from the outflow port of garbage reclamation canal 2 shown in Fig. 3, is delivered to sedimentation basin by 3, settling step
In, sedimentation basin is provided with the intake pool 31 of bottom connection and stilling basin 32, intake pool 31 and stilling basin 32 are separated by partition wall, into
The bottom in pond 31 is connected to the bottom of stilling basin 32 by multiple through-holes or straight slot, and the bottom of intake pool 31 is filled with quartz sand
33, the papermaking wastewater in intake pool 31 is entered by through-hole or straight slot in stilling basin 32；
The bottom of intake pool 31 and stilling basin 32 is filled with quartz sand 33, and the height of quartz sand 33 is higher than through-hole or straight slot
Height, stop that sludge in papermaking wastewater and impurity by through-hole or straight slot, and make in papermaking wastewater by quartz sand 33
Sludge and little particle contamination precipitation are stopped and settled sludge above the quartz sand 33 of intake pool 31 by quartz sand 33, with reality
Existing filter sludge, and by quartz sand 33 bury through-hole or straight slot can papermaking wastewater water supply pass through, the quartz sand in stilling basin 32
33 make the papermaking wastewater in stilling basin 32 keep tranquil, there is no sludge in stilling basin 32.
The sludge being deposited on quartz sand 33 is periodically absorbed using dredge pump, and quartz sand 33 is transferred to washed-out sand pond, is made
Rifle is rushed with high pressure to clean, can recycle quartz sand 33, recycles quartz sand 33 to realize, this step is heavy using physical method
It forms sediment, the chemicals such as flocculant and precipitating reagent need not be used, reduce secondary sludge, reduce input, and no consumption consumptive material, dimension
Shield and operating cost are extremely low.
4, boundling electromagnetism walks decomposition step, shown in Fig. 4,
Papermaking wastewater is extracted from the middle and upper part of stilling basin 32 by water pump, is first pumped from the extraction papermaking wastewater of stilling basin 32
To bypass channel 47, papermaking wastewater is first along the length direction lateral flow of bypass channel 47 to the top of each shunting cone 4, by papermaking dirt
Moisture stream and be delivered to multiple inverted cone shapes bottom tapping cone 4 top surface, then respectively along each shunting cone 4
The conical surface flows downward to tip, forms a thin water layer in the conical surface, is dripped still further below after collecting below tip and form the water
Fluidization tower 42.
Preferably, bypass channel 47 extends close to the side of the sorting pool and along sorting pool width direction, each flow
Column 42 is alternatively arranged in matrix and is dropped in the side of sorting pool.Shunting cone 4 top be non-metallic material be made, the point of bottom
End 41 is made using silicon steel, and papermaking wastewater drips under the tip of shunting cone 4 bottom, under drip stream in thin cylindrical shape
Flow column 42, and fall into the sorting pool of lower section；
The electromagnet 43 for coming close to or in contact with point 41 by being built in the inner cavity of shunting cone 4 generates axial magnetic field,
Magnetic field intensity is 5000-8000 Gausses, and point 41 is made to form a magnetic pole point, and it is former to form a magnetic field at the tip of point 41
Point, magnetic field are shot down from magnetic pole point, close to the magnetic field of magnetic pole point in collection pencil, the magnetic field radius from magnetic pole point are selected to start to become
Greatly, the magnetic field of a cone shape is formed below the origin of magnetic field；By the point 41 for shunting cone 4 and the papermaking in sorting pool
Sewage is electrically connected the DC voltage that voltage is 80-100V, and point 41 is formed simultaneously a direct current pole, and flow column 42
Then form the vertical electric field of a thin cylindrical shape；
The papermaking wastewater at the tip of point 41 is flowed to when by direct current pole and magnetic field origin, makes to be dissolved in and make
Metallic element moment ionization in paper sewage, the ink moment being dissolved in papermaking wastewater resolve into small molecule ink, dissolve
Small molecule aliphatic acid is resolved into the lower fatty acid moment in papermaking wastewater, it is unstable under electric field action in flow column 42
Fixed ionized metal element, small molecule ink, small molecule aliphatic acid and pectin, resin and the ash content being dissolved in papermaking wastewater
In conjunction with and being in freely falling body since loose type coagulation is combined and condensed by various impurity in flow column 42
Fall in state, therefore, loose type coagulation made of condensation is loose, will not condense and real block, condense formation
The density of loose type coagulation is 0.6-0.7, and the water flow by improving papermaking wastewater changes water velocity, promotes water flow velocity
Degree, can further decrease the density of loose type coagulation.After the liquid level of sorting pool below the contact of flow column 42, density is remote
Loose type coagulation less than papermaking wastewater understands rapid increase in ullage.
On the other hand, loose type coagulation is limited to formation in flow column 42, can limit to be formed in flow column 42
Loose type coagulation size, the loose type coagulation of bulky grain will not be formed, by control flow column 42 diameter come
The volume for limiting loose type coagulation makes the average grain diameter of loose type coagulation made of condensation control in 1-3mm.
This step makes papermaking wastewater that special flow shape be presented, and uses special Electromagnetic Treatment, this step need not input
Length of schooling agent, also need not use expendable consumptive material, the required electric energy of processing procedure can not, processing cost is also very low.
5, multi_layer extraction step flows into the papermaking wastewater in sorting pool, is made since the density of loose type coagulation is much smaller than
The density of paper sewage, loose type coagulation floating upward quickly, and a superposed layer is formed above sorting pool, upper layer is extracted by water pump
Loose type coagulation, sorting pool is isolated to form a separate tank 44 and a clear water reserviors 45 via intermediate membrane, be separated by partition
Separate tank 44 and clear water reserviors 45 may not flow into clear water reserviors 45 with the loose type coagulation obstructed in separate tank 44, make separate tank
44 are connected to 45 bottom of clear water reserviors, so that the clear water of 44 lower layer of separate tank is flowed into clear water reserviors 45；
Make the level control of the point 41 of shunting cone 4 and the papermaking wastewater of lower section in 20cm hereinafter, loose type condenses
The depth that object sinks to liquid level is no more than 10cm, and the liquid level of sorting pool and the height of bottom of pond are controlled at 0.5 meter or more, preferably controlled
At 1 meter or more, as long as the depth that partition board stretches into liquid level is made to surpass 0.5 meter, then loose type coagulation never enters clear water reserviors
In 45.
A suction hood 46 is placed in the side far from flow column 42, suction hood 46 connects water pump, and suction hood 46, which suspends and balances, is dividing
From 44 top of pond, preferably, the lower face of suction hood 46 is made to sink to the position of liquid level 2-5cm, separate tank 44 is extracted by suction hood 46
The loose type coagulation on upper layer.
6, it recycles, the papermaking wastewater of lower layer is extracted by water pump, obtain pulping cycling use of water, pulping is used with cycle
Containing chemicals needed for pulping in water, it is pumped back to the recycling of pulping bucket 1.
Present invention process is simple, and the cost of processing and the recycling of the papermaking wastewater that pulping process generates is very low, far
Required processing cost is discharged after being purified less than tradition again, and processing procedure need not use chemicals, and not needed
Using expendable consumptive material, secondary input cost is low, and maintenance is simple and convenient, is recycled using papermaking wastewater, reduces chemistry
The usage amount of preparation, the papermaking wastewater that papermaking enterprise need not generate pulping process are drained at sewage purifier purification
Reason reduces 50-60% using the workload of sewage purifier, papermaking enterprise cost of sewage disposal is greatly lowered, has
There is higher comprehensive productivity effect, and production process is more energy-saving and environmentally friendly, cleanliness without any pollution.
The above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (7)
1. a kind of recycling method of the papermaking wastewater generated using waste paper pulp-making process, which is characterized in that including following step
Suddenly,
1) papermaking wastewater step, is collected, by the buffer pool for being built in pulping bucket (1) bottom for waste paper to be broken into paper pulp
(12) it receives pulping bucket (1) bottom discharge and comes out papermaking wastewater, pass through multiple by-pass channels (11) for being respectively communicated with buffer pool (12)
Difference quickly shunts away the papermaking wastewater in buffer pool (12), and be respectively delivered to garbage reclamation canal (2) enters head piece, edge
The floor height of the direction of advance of papermaking wastewater, by-pass channel (11) is gradually reduced；
2), classified filtering step, papermaking wastewater flow into and from the head piece that enters of garbage reclamation canal (2) from garbage reclamation canal (2)
Outflow port outflow, garbage reclamation canal (2), which is obliquely installed and enters head piece, is higher than outflow port, and classified filtering includes,
2.1), existed by being fixed on the multiple hooks (22) of the first hanger rail (21) traction of the top of the leading portion of garbage reclamation canal (2)
Garbage reclamation canal (2) and the setting loopy moving between the garbage pool of garbage reclamation canal (2) side；
When hook (22) moves to garbage reclamation canal (2) middle section position, the lower end of hook (22) is inserted to garbage reclamation canal (2) bottom
Portion, and hook (22) enters head piece stem towards garbage reclamation canal (2), by hook (22) hook film, polybag and
Large volume rubbish simultaneously takes away garbage reclamation canal (2)；
When hook (22) moves to above garbage pool, hook (22) is made to overturn and by the film hooked, polybag and large volume rubbish
Rubbish is lost in garbage pool；
2.2) rubbish of papermaking wastewater, is collected embedded in the screen frame classification of the posterior segment of garbage reclamation canal (2) by multiple activities
Or impurity, screen frame front end face offers opening, rear end face is covered with mesh, and the width of the width of screen frame and garbage reclamation canal (2)
Match, the height of screen frame is more than the inner height of garbage reclamation canal (2)；
The second hanger rail by being mounted on the top of the posterior segment of garbage reclamation canal (2), which hangs screen frame, to be moved to above garbage pool, and
New screen frame is set to the corresponding position of garbage reclamation canal (2)；
3) papermaking wastewater flowed out from the outflow port of garbage reclamation canal (2) is delivered in sedimentation basin, sedimentation basin by, settling step
The intake pool (31) and stilling basin (32), intake pool (31) and stilling basin (32) for being provided with bottom connection are separated by partition wall, into
The bottom in pond (31) is connected to the bottom of stilling basin (32) by multiple through-holes or straight slot, and the bottom of intake pool (31) is filled with
Quartz sand (33), the papermaking wastewater in intake pool (31) are entered by through-hole or straight slot in stilling basin (32)；
4), boundling electromagnetism walks decomposition step, extracts papermaking wastewater from the middle and upper part of stilling basin (32) by water pump, and be delivered to more
The top of the bottom tapping cone (4) of a inverted cone shape, shunting cone (4) top be non-metallic material be made, bottom
Point (41) is made using silicon steel, papermaking wastewater from shunting cone (4) bottom tip under drip, under drip stream be in thin cylinder
The flow column (42) of shape, and fall into the sorting pool of lower section；
The electromagnet (43) for coming close to or in contact with point (41) by being built in the inner cavity of shunting cone (4) generates axial magnetic
, magnetic field intensity is 5000-8000 Gausses, and point (41) is made to form a magnetic pole point, and one is formed at the tip of point (41)
Magnetic field origin, and form below the origin of magnetic field the magnetic field of a cone shape；The point (41) of cone (4) will be shunted and divided
Papermaking wastewater in scavenger is electrically connected the DC voltage that voltage is 80-100V, and point (41) is formed simultaneously a direct current
Pole, and flow column (42) then forms the vertical electric field of a thin cylindrical shape；
The papermaking wastewater at the tip of point (41) is flowed to when by direct current pole and magnetic field origin, makes to be dissolved in papermaking
Metallic element moment ionization in sewage, the ink moment being dissolved in papermaking wastewater resolve into small molecule ink, are dissolved in
Lower fatty acid moment in papermaking wastewater resolves into small molecule aliphatic acid, unstable under electric field action in flow column (42)
Fixed ionized metal element, small molecule ink, small molecule aliphatic acid and pectin, resin and the ash content being dissolved in papermaking wastewater
In conjunction with, and the loose type coagulation for forming that density is 0.6-0.7 is condensed, and flow column (42) limits the body of loose type coagulation
Product, average grain diameter are controlled in 1-3mm；
5), multi_layer extraction step flows into the papermaking wastewater in sorting pool, since the density of loose type coagulation is dirty much smaller than papermaking
The density of water, loose type coagulation floating upward quickly, and a superposed layer is formed above sorting pool, the pine on upper layer is extracted by water pump
Type coagulation is dissipated,
6) it, recycles, the papermaking wastewater of lower layer is extracted by water pump, obtains pulping cycling use of water, pulping cycling use of water
It is interior containing chemicals needed for pulping, be pumped back to pulping bucket (1) recycling.
2. a kind of recycling method of papermaking wastewater generated using waste paper pulp-making process according to claim 1,
It is characterized in that：In the classified filtering step, the rotary joint (23) by being mounted on the hook (22) top rotates hook
(22) to realize rotation hook (22)；By be arranged multiple arcuation iron fork hooks in hook (22) lower part live film, polybag and
Large volume rubbish, iron fork outer end upwarp.
3. a kind of recycling method of papermaking wastewater generated using waste paper pulp-making process according to claim 1,
It is characterized in that：In the classified filtering step,
In the posterior segment of the garbage reclamation canal (2), pass through the bumping post of multiple bottom surfaces and side for being fixed on garbage reclamation canal (2)
Mud is set to generate turbulent flow, to avoid sludge settling, bumping post is arranged between adjacent screen frame.
4. a kind of recycling method of papermaking wastewater generated using waste paper pulp-making process according to claim 1,
It is characterized in that：In the classified filtering step,
Suspension hook by operating in second hanger rail slings screen frame by hooking the hanging ring of screen frame front；
Screen frame is set to be located in garbage reclamation canal (2) by the blend stop (24) of garbage reclamation canal (2) both sides supports screen frame；
The screen frame includes coarse mesh screen frame (25), middle mesh screen frame (26) and fine mesh screen frame (27), in garbage reclamation canal (2)
Posterior segment is sequentially equipped with multiple coarse mesh screen frames (25), multiple middle mesh screen frames (26) in garbage reclamation canal (2) from front to back
With multiple fine mesh screen frames (27), the mesh of the rear end face of coarse mesh screen frame (25) is more than the rear end face of middle mesh screen frame (26)
Mesh, the mesh of the rear end face of middle mesh screen frame (26) are more than the mesh of the rear end face of fine mesh screen frame (27), coarse mesh screen frame
(25) mesh is 3-5cm, and the mesh of middle mesh screen frame (26) is 1-2cm, and fine mesh screen frame (27) mesh is 0.1-0.3cm.
5. a kind of recycling method of papermaking wastewater generated using waste paper pulp-making process according to claim 1,
It is characterized in that：In the settling step,
The bottom of the intake pool (31) and the stilling basin (32) is filled with quartz sand (33), and the height of quartz sand (33) is high
In the height of through-hole or straight slot, sludge in papermaking wastewater and impurity are stopped by through-hole or straight slot by quartz sand (33), and
Make sludge in papermaking wastewater and little particle contamination precipitation above the quartz sand (33) of intake pool (31), to realize that filtering is dirty
Mud, and by quartz sand (33) bury through-hole or straight slot can papermaking wastewater water supply pass through, the quartz sand (33) in stilling basin (32)
The papermaking wastewater in stilling basin (32) is set to keep tranquil；
Quartz sand (33) is periodically transferred to washed-out sand pond, rifle is rushed using high pressure and cleans, quartz sand (33) is recycled to realize.
6. a kind of recycling method of papermaking wastewater generated using waste paper pulp-making process according to claim 1,
It is characterized in that：In the boundling electromagnetism step decomposition step,
It is first pumped to bypass channel (47) from the extraction papermaking wastewater of the stilling basin (32), papermaking wastewater is first along bypass channel (47)
Length direction lateral flow is to the top surface of each shunting cone (4), then the conical surface respectively along each shunting cone (4) is downward
Tip is flowed to, a thin water layer is formed in the conical surface, is dripped still further below after collecting below tip and form the flow column (42)；
Bypass channel (47) extends close to the side of the sorting pool and along sorting pool width direction, and each flow column (42) is in square
Battle array is alternatively arranged and is dropped in the side of sorting pool.
7. a kind of recycling method of papermaking wastewater generated using waste paper pulp-making process according to claim 1,
It is characterized in that：In the multi_layer extraction step,
The sorting pool is isolated to form a separate tank (44) and a clear water reserviors (45) via intermediate membrane, is separated by partition separation
Pond (44) and clear water reserviors (45) may not flow into clear water reserviors (45) to obstruct the loose type coagulation in separate tank (44), make point
It is connected to clear water reserviors (45) bottom from pond (44), so that the clear water of separate tank (44) lower layer is flowed into clear water reserviors (45)；
A suction hood (46) is placed in the side far from flow column (42), suction hood (46) connects water pump, and suction hood (46) suspends and balances
Above separate tank (44), the loose type coagulation on separate tank (44) upper layer is extracted by suction hood (46).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731871A (en) * | 2019-02-25 | 2019-05-10 | 浙江彩诺数码科技有限公司 | A kind of cleaning and filtrating equipment of stamp web plate |
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