CN110342672A - Purify the processing system and its processing method of recovered water - Google Patents
Purify the processing system and its processing method of recovered water Download PDFInfo
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- CN110342672A CN110342672A CN201810298615.5A CN201810298615A CN110342672A CN 110342672 A CN110342672 A CN 110342672A CN 201810298615 A CN201810298615 A CN 201810298615A CN 110342672 A CN110342672 A CN 110342672A
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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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- 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
Abstract
The invention discloses a kind of processing systems and its processing method for purifying recovered water, belong to oil-gas mining field.The processing system includes: membrane separation plant, fine suspension separation equipment, first pipe, second pipe, first pipe mixer, second pipe mixer, third pipeline and the 4th pipeline；The inside of fine suspension separation equipment is disposed with ceramic adsorbent layer, quartz sand filtration layer, activated carbon adsorption layer from the bottom to top；First pipe, second pipe are used to conveying purification recovered water, and first pipe is connected to fine suspension separation equipment bottom inlet, and second pipe both ends are connected to fine suspension separation equipment top exit, membrane separation plant top inlet respectively；First pipe mixer, second pipe mixer are successively set in first pipe along water (flow) direction；Third pipeline is connected to first pipe mixer sidewall, for conveying the first medicament；4th pipeline is connected to second pipe mixer sidewall, for conveying second medicament.
Description
Technical field
The present invention relates to oil-gas mining field, in particular to a kind of processing system and its processing method for purifying recovered water.
Background technique
In oilfield process, usually to the oil field containing pollutants such as substantial oil, suspended matter, minerals, bacteriums
Recovered water carries out decontamination processing, to obtain oil concentration less than or equal to 5mg/L, concentration of suspension less than or equal to 5mg/L's
Recovered water is purified, and then is used for oil-field flooding.Currently, also being carried out to above-mentioned purification recovered water further due to water scarcity
Fine processing and remove salt treatment, make to purify the oil concentration in recovered water be less than or equal to 2mg/L, concentration of suspension be less than or
It is less than or equal to 1000mg/L equal to 2mg/L, mineral concentration, to meet the needs of to high-quality water resource.Therefore, it is necessary to
A kind of processing system purifying recovered water is provided.
The prior art provides a kind of membrane separation plant, and using the processing system as purification recovered water, removable purification is adopted
Crude oil, suspended matter, minerals in water outlet.
The inventor finds that the existing technology has at least the following problems:
Since the small suspended matter in purification recovered water easily blocks the seperation film of membrane separation plant, cause membrane separation plant without
Method continuously operates normally, and the regeneration effect for purifying recovered water is poor.
Summary of the invention
The embodiment of the invention provides a kind of processing systems and its processing method for purifying recovered water, can solve above-mentioned ask
Topic.The technical solution is as follows:
On the one hand, a kind of processing system for purifying recovered water, including membrane separation plant are provided, the processing system is also
It include: fine suspension separation equipment, first pipe, second pipe, first pipe mixer, second pipe mixer, third
Pipeline and the 4th pipeline；
The inside of the fine suspension separation equipment is disposed with ceramic adsorbent layer, quartz sand filtration from the bottom to top
Layer, activated carbon adsorption layer, and it is the quartz sand particle size of the ceramic partial size of the ceramic adsorbent layer, the quartz sand filtration layer, described
The activated carbon particle size of activated carbon adsorption layer is sequentially reduced；
The first pipe, the second pipe are used to conveying purification recovered water, and the first pipe and described thin
The bottom inlet of small suspended matter separation equipment is connected to, the both ends of the second pipe respectively with the fine suspension separation equipment
Top exit, the membrane separation plant top inlet connection；
The first pipe mixer, the second pipe mixer are successively set on the first pipe along water (flow) direction
On；
The third pipeline is connected to the side wall of the first pipe mixer, for conveying the first medicament；
4th pipeline is connected to the side wall of the second pipe mixer, for conveying second medicament.
In a kind of possible design, the ceramic adsorbent layer with a thickness of 390mm~410mm, density 4.0g/cm3
~4.5g/cm3, ceramic partial size is 0.5mm~0.8mm；
The quartz sand filtration layer with a thickness of 490mm~510mm, density 2.64g/cm3~2.66g/cm3, quartz sand
Partial size is 0.4mm~0.6mm；
The activated carbon adsorption layer with a thickness of 290mm~310mm, density 1.29g/cm3~1.31g/cm3, active carbon
Partial size is 0.3mm~0.5mm.
In a kind of possible design, the processing system further include: be arranged in the fine suspension separation equipment
Water distributor, water collector；
The water distributor is located at the lower section of the ceramic adsorbent layer, and the water collector is located at the upper of the activated carbon adsorption layer
Side；
The port of the first pipe stretches in the fine suspension separation equipment and is connected to the water distributor；
The port of the second pipe stretches in the fine suspension separation equipment and is connected to the water collector.
In a kind of possible design, the water distributor is arranged to port closed and the tubular structure with multiple through-holes；
The water collector includes: the transverse tube of port closed, multiple screen casings, vertical tube；
The screen casing is connected to the transverse tube respectively with the vertical tube, and multiple screen casings are between the axial direction of the transverse tube
Every distribution；
The vertical tube is connected to the second pipe.
In a kind of possible design, purifying layer is provided on the outer wall of the screen casing.
In a kind of possible design, the purifying layer is made of cordage.
In a kind of possible design, the cordage is terylene rope.
In a kind of possible design, flowmeter is provided on the third pipeline, the 4th pipeline.
In a kind of possible design, the third pipeline is additionally provided with first check-valve, the first ball valve；
Second check-valve, the second ball valve are additionally provided on 4th pipeline.
On the other hand, a kind of processing method for purifying recovered water is additionally provided, the treating method comprises:
Purification recovered water is conveyed into first pipe according to preset flow rate, and it is default to be added first into third pipeline simultaneously
First medicament of concentration to destroy the charge stability of suspended matter in the purification recovered water, and hydrolyzes to form tiny wadding body；
When the purification recovered water after first chemicals treatment enters second pipe mixer, add into the 4th pipeline
Enter the second medicament of the second preset concentration, to hydrolyze to form chain macromolecular structure；
The first medicament after hydrolysis, second medicament enter in fine suspension separation equipment, are adsorbed to ceramic adsorbent
In layer, trapping layer is formed, to capture the first stage suspension object in the purification recovered water after first chemicals treatment；
After capturing to the first stage suspension object, the trapping layer is retained by quartz sand filtration layer, forms wadding body filtering layer, with
Intercept through the trapping layer treated purification recovered water in second level suspended matter；
Activated carbon adsorption layer removal is through the three-level suspended matter in the wadding body filtering layer treated purification recovered water；
The purification recovered water after removing the three-level suspended matter is handled using membrane separation plant, to obtain target dirt
Contaminate the purification recovered water of coefficient；
Wherein, the ceramic adsorbent layer, the quartz sand filtration layer, the activated carbon adsorption layer are set gradually from the bottom to top
In the inside of the fine suspension separation equipment, and the ceramic partial size of the ceramic adsorbent layer, the quartz sand filtration layer
Quartz sand particle size, the activated carbon adsorption layer activated carbon particle size be sequentially reduced, with to it is described purification recovered water in suspended matter
Carry out classification removal.
In a kind of possible design, first medicament is polymeric ferric salt or polyaluminium salts, and the second medicament includes:
Macromolecule cation flocculant, polyamide polymers, polyacrylamide polymer.
In a kind of possible design, the preset flow rate is less than or equal to 4m/h；
First preset concentration is 9mg/L~11mg/L, and second preset concentration is 0.3mg/L~0.5mg/L.
Technical solution provided in an embodiment of the present invention has the benefit that
The processing system of purification recovered water provided in an embodiment of the present invention is by third pipeline, the 4th pipeline respectively to first
The first medicament, second medicament are conveyed in pipe-line mixer, second pipe mixer, can be effectively settled out outstanding in purification recovered water
Floating object, and by the suspended matter in fine suspension separation equipment removal purification recovered water, it can effectively avoid purification extraction in this way
The seperation film in suspended particle clogging membrane separation plant in water guarantees that membrane separation plant continuously operates normally, and improves net
Change the regeneration effect of recovered water；In addition, by being disposed with ceramics from the bottom to top in the inside of fine suspension separation equipment
Adsorption layer, quartz sand filtration layer, activated carbon adsorption layer, and the quartz sand of the ceramic partial size of ceramic adsorbent layer, quartz sand filtration layer
Partial size, activated carbon adsorption layer activated carbon particle size be sequentially reduced, can cooperate with the first medicament, second medicament to purification recovered water in
Suspended matter is removed step by step, and then can effectively remove the suspended matter in purification recovered water.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the processing system of purification recovered water provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of water collector provided in an embodiment of the present invention.
Each label declaration in attached drawing is as follows:
1- membrane separation plant；
2- fine suspension separation equipment；
201a- ceramic adsorbent layer；
201b- quartz sand filtration layer；
201c- activated carbon adsorption layer；
202- water distributor；
203- water collector；
203a- transverse tube；
203b- screen casing；
203c- vertical tube；
3- first pipe；
4- second pipe；
5- first pipe mixer；
6- second pipe mixer；
7- third pipeline；
701- first check-valve；
The first ball valve of 702-；
The 4th pipeline of 8-；
801- second check-valve；
The second ball valve of 802-；
9- flowmeter.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
In a first aspect, the embodiment of the invention provides a kind of processing systems for purifying recovered water, as shown in Figure 1, the processing
System includes membrane separation plant 1.Further, the processing system further include: fine suspension separation equipment 2, first pipe 3,
Second pipe 4, first pipe mixer 5, second pipe mixer 6, third pipeline 7 and the 4th pipeline 8；Fine suspension separation
The inside of equipment 2 is disposed with ceramic adsorbent layer 201a, quartz sand filtration layer 201b, activated carbon adsorption layer from the bottom to top
201c, and the ceramic partial size of ceramic adsorbent layer 201a, the quartz sand particle size of quartz sand filtration layer 201b, activated carbon adsorption layer 201c
Activated carbon particle size be sequentially reduced；First pipe 3, second pipe 4 are used to conveying purification recovered water, and first pipe 3 and thin
The bottom inlet of small suspended matter separation equipment 2 is connected to, the both ends of second pipe 4 top with fine suspension separation equipment 2 respectively
Portion outlet, the top inlet connection of membrane separation plant 1；First pipe mixer 5, second pipe mixer 6 along water (flow) direction according to
It is secondary to be arranged in first pipe 3；Third pipeline 7 is connected to the side wall of first pipe mixer 5, for conveying the first medicament；The
Four pipelines 8 are connected to the side wall of second pipe mixer 6, for conveying second medicament.
It should be noted that being provided with distance between first pipe mixer 5 and second pipe mixer 6.
The working principle and effect of the processing system of purification recovered water provided in an embodiment of the present invention are retouched below
It states:
Purification recovered water is conveyed into first pipe 3 according to preset flow rate (such as 3m/h, 4m/h etc.), and simultaneously to third
Preset concentration (such as 10mg/L etc.) is added in pipeline 7 and chemical component is the first medicament of polymeric ferric salt or polyaluminium salts, makes
The first medicament in third pipeline 7 flows into first pipe mixer 5, mixes with purification recovered water, to destroy purification extraction
The stability of suspended matter in water, and the first medicament hydrolyzes to form tiny wadding body.
When the purification recovered water after the first chemicals treatment enters second pipe mixer 6, it is added into the 4th pipeline 8
Preset concentration (such as 0.4mg/L etc.) and chemical component are precipitating reagent (for example, the flocculant includes macromolecule cation flocculation
Agent, polyamide polymers, polyacrylamide polymer) second medicament, and second medicament hydrolyzes to form chain macromolecule
Structure.
Later, the first medicament after hydrolysis, second medicament enter in fine suspension separation equipment 2, are adsorbed to pottery
In porcelain adsorption layer 201a, trapping layer is formed, to capture the first stage suspension object in the purification recovered water after the first chemicals treatment；To
After first stage suspension object captures, trapping layer is retained by quartz sand filtration layer 201b, wadding body filtering layer is formed, to intercept at captured layer
The second level suspended matter in purification recovered water after reason；Through wadding body filtering layer treated purification recovered water flow through activated carbon adsorption layer
When 201c, activated carbon adsorption layer 201c removal through wadding body filtering layer treated purification recovered water in three-level suspended matter.
Finally, purification recovered water is flowed through membrane separation plant 1, to obtain the purification recovered water of target stains coefficient.
It should be noted that the suspended matter in the purification recovered water flowed by 3 water inlet end of first pipe is according to particle size
First stage suspension object, second level suspended matter, three-level suspended matter can be divided into, wherein the partial size of first stage suspension object is maximum, three-level suspended matter
Partial size is minimum.
As it can be seen that the processing system of purification recovered water provided in an embodiment of the present invention is divided by third pipeline 7, the 4th pipeline 8
The first medicament, second medicament are not conveyed into first pipe mixer 5, second pipe mixer 6, purification can be effectively settled out and adopt
Suspended matter in water outlet, and by the suspended matter in the removal purification recovered water of fine suspension separation equipment 2, it can effectively keep away in this way
Exempt to purify the seperation film in the suspended particle clogging membrane separation plant 1 in recovered water, guarantee that membrane separation plant 1 continuously operates normally,
And improve the regeneration effect of purification recovered water；In addition, by the inside of fine suspension separation equipment from the bottom to top according to
It is secondary to be provided with ceramic adsorbent layer, quartz sand filtration layer, activated carbon adsorption layer, and ceramic partial size, quartz sand in ceramic adsorbent layer
The activated carbon particle size in quartz sand particle size, activated carbon adsorption layer in filter layer is sequentially reduced, and can cooperate with the first medicament, the second medicine
Agent removes the suspended matter in purification recovered water step by step, and then can effectively remove the suspended matter in purification recovered water.
Wherein, the structure of above-mentioned ceramic adsorbent layer 201a, quartz sand filtration layer 201b and activated carbon adsorption layer 201c and thin
The interior wall construction of small suspended matter separation equipment 2 is adapted, for example, if the inner wall of fine suspension separation equipment 2 is rounded
Structure, then ceramic adsorbent layer 201a, quartz sand filtration layer 201b and activated carbon adsorption layer 201c are also provided with into circular configuration, so that
The inner wall of each layer and fine suspension separation equipment 2 offsets, and then avoids purification recovered water from each filter layer and tiny suspension
It is passed through in gap between object separation equipment 2, the suspended matter in 2 pairs of fine suspension separation equipment purification recovered waters can be improved
Removal effect.
The inner wall of above-mentioned fine suspension separation equipment 2 can two stop collars of axially spaced setting, and it is above-mentioned ceramics inhale
Attached layer 201a, quartz sand filtration layer 201b and activated carbon adsorption layer 201c are respectively positioned in the two stop collars, avoid each filtering
Play occurs for layer, and the removal effect of the suspended matter in 2 pairs of fine suspension separation equipment purification recovered waters can be improved.
The filter effect of the suspended matter in recovered water is purified in order to further improve 2 pairs of fine suspension separation equipment,
The ceramic partial size of above-mentioned ceramic adsorbent layer 201a be 0.5mm~0.8mm (for example, the filtering partial size may be configured as 0.5mm,
0.6mm, 0.7mm, 0.8mm etc.), with a thickness of 390mm~410mm (for example, the thickness may be configured as 390mm, 400mm,
410mm etc.), density 4.0g/cm3~4.5g/cm3(for example, which may be configured as 4.0g/cm3、4.1g/cm3、
4.2g/cm3、4.3g/cm3、4.4g/cm3、4.5g/cm3Deng).
The quartz sand particle size of above-mentioned quartz sand filtration layer 201b is that (for example, which can by 0.4mm~0.6mm
Be set as 0.4mm, 0.5mm, 0.6mm etc.), with a thickness of 490mm~510mm (for example, the thickness may be configured as 490mm,
500mm, 510mm etc.), density 2.64g/cm3~2.66g/cm3(for example, which may be configured as 2.64g/cm3、
2.65g/cm3、2.66g/cm3Deng).
The activated carbon particle size of above-mentioned activated carbon adsorption layer 201c is that (for example, which can by 0.3mm~0.5mm
Be set as 0.3mm, 0.4mm, 0.5mm etc.), with a thickness of 290mm~310mm (for example, the thickness may be configured as 290mm,
300mm, 310mm etc.), density 1.29g/cm3~1.31g/cm3(for example, which may be configured as 1.29g/cm3、
1.30g/cm3、1.31g/cm3Deng).
By the way that the density of ceramic adsorbent layer 201a to be set greater than to the density of quartz sand filtration layer 201b, quartz sand filtration
The density of layer 201b is set greater than the density of activated carbon adsorption layer 201c, can reduce quartz sand filtration layer 201b to ceramic adsorbent
The pressure of layer 201a, activated carbon adsorption layer 201c avoid ceramic adsorbent layer 201a, quartz to the pressure of quartz sand filtration layer 201b
Sand filter layer 201b is damaged, and then improves the service life of fine suspension separation equipment 2.
It flows into fine suspension separation equipment 2 and is set from fine suspension separation for the ease of recovered water will be purified
Outflow in standby 2, as shown in Figure 1, in the embodiment of the present invention, the processing system further include: be arranged in fine suspension separation equipment 2
Interior water distributor 202, water collector 203；Water distributor 202 is located at the lower section of ceramic adsorbent layer 201a, and water collector 203 is located at active carbon
The top of adsorption layer 201c；The port of first pipe 3 stretches in fine suspension separation equipment 2 and is connected to water distributor 202；The
The port of two pipelines 4 stretches in fine suspension separation equipment 2 and is connected to water collector 203.
It should be noted that the end of above-mentioned first pipe 3 is protruded by the bottom inlet of fine suspension separation equipment 2
To the inside of fine suspension separation equipment 2, the end of above-mentioned second pipe 4 passes through the top of fine suspension separation equipment 2
Outlet stretches to the inside of fine suspension separation equipment 2.
Above-mentioned water distributor 202 can be set to various structures, for example, in the embodiment of the present invention, the water distributor 202 setting
At port closed and with the tubular structure of multiple through-holes.
The water distributor 202 of above structure is easy to produce, processes.
Wherein, the water distributor 202 of above structure can be arranged along the centerline direction perpendicular to fine suspension separation equipment 2
At the port of first pipe 3.
Above-mentioned water collector 203 can be configured as various structures, for example, as shown in Fig. 2, in the embodiment of the present invention, it should
Water collector 203 further include: the transverse tube 203a of port closed, multiple screen casing 203b, vertical tube 203c；Screen casing 203b and vertical tube 203c points
It is not connected to transverse tube 203a, and multiple screen casing 203b are distributed along the axially spaced-apart of transverse tube 203a；Vertical tube 203c and second pipe 4 connect
It is logical.
It is understood that above-mentioned screen casing 203b refers to the pipeline for being provided with multiple through-holes on wall.Wherein, water collector
The aperture of radial through-hole corresponding to 203 may be configured as being equal to or less than 1 micron.
Above-mentioned vertical tube 203c and 4 flanged joint of second pipe are simultaneously connected.
By the way that water collector 203 is arranged to screen casing 203b structure, partial suspended that can further in filtration, purification recovered water
Object.
For the partial suspended thing in further filtration, purification recovered water, purification is provided on the outer wall of screen casing 203b
Layer.
Wherein, above-mentioned purifying layer can be made of cordage.The part that can be further filtered out in purification recovered water in this way is outstanding
Floating object, so that the contamination factor of the purification recovered water flowed out by the top exit of fine suspension separation equipment 2 is less than or equal to
3。
Above-mentioned cordage can be arranged on the outer wall of water collector 203 by way of winding, to constitute purifying layer.Wherein,
It can be set to 2 layers~3 layers of purifying layer on the outer wall of water collector 203.
Above-mentioned cordage may be configured as terylene rope, the terylene rope not only acid and alkali-resistance, but also can clean repeatedly, extend limit
The service life of rope.
Above-mentioned water distributor 202 can weld at the port of first pipe 3, and water collector 203 also can weld in second pipe 4
At port, easy to produce, processing.
In order to which effectively the suspended matter purified in recovered water can be precipitated and the first medicament, second medicament
Waste, as shown in Figure 1, being provided with flowmeter 9 on third pipeline 7, the 4th pipeline 8 in the embodiment of the present invention.
It, can be to the additional amount of the first medicament, second medicament by the way that flowmeter 9 is arranged on third pipeline 7, the 4th pipeline 8
It is adjusted.
Third pipeline 7, the liquid in the 4th pipeline 8 flow back in order to prevent, and for the ease of third pipeline the 7, the 4th
The installation and removal of pipeline 8, as shown in Figure 1, third pipeline 7 is additionally provided with first check-valve 701, in the embodiment of the present invention
One ball valve 702；Second check-valve 801, the second ball valve 802 are additionally provided on 4th pipeline 8.
Wherein, above-mentioned first check-valve 701, second check-valve 801 primarily serve the effect for preventing liquid reflux, the first ball
Valve 702, the second ball valve 802 primarily serve conducting and close the effect of third pipeline 7, the 4th pipeline 8.
Above-mentioned first check-valve 701 may be provided between the flowmeter 9 of third pipeline 7, the first ball valve 702, the second non-return
Valve 801 may be provided between the flowmeter 9 of the 4th pipeline 8, the second ball valve 802, and the embodiment of the present invention is not to first check-valve
701, the erection sequence of the first ball valve 702 and the erection sequence of second check-valve 801, the second ball valve 802 are limited.
In addition, the embodiment of the present invention does not limit the setting number of fine suspension separation equipment 2 in processing system,
For example, 4 fine suspension separation equipments 2 can be sequentially communicated between first pipe 3 and second pipe 4.Wherein, often
The outer diameter of platform fine suspension separation equipment 2 is 3.2m, is highly 4m.
Second aspect, the embodiment of the invention also provides a kind of purification extraction using processing system described in first aspect
The processing method of water, the processing method include:
Step 101 conveys purification recovered water according to preset flow rate into first pipe 3, and adds simultaneously into third pipeline 7
Enter the first medicament of the first preset concentration, to destroy the charge stability of suspended matter in purification recovered water, and hydrolyzes to form tiny
Wadding body.
Step 102, when the purification recovered water after the first chemicals treatment enters second pipe mixer 6, to the 4th pipe
The second medicament of the second preset concentration is added in road 8, to hydrolyze to form chain macromolecular structure.
The first medicament, second medicament after step 103, hydrolysis enter in fine suspension separation equipment 2, are adsorbed to
In ceramic adsorbent layer 201a, trapping layer is formed, to capture the first stage suspension object in the purification recovered water after the first chemicals treatment；
After capturing to first stage suspension object, trapping layer is retained by quartz sand filtration layer 201b, forms wadding body filtering layer, to intercept
Captured layer treated purification recovered water in second level suspended matter；
Through wadding body filtering layer treated purification recovered water flow through activated carbon adsorption layer 201c, with removal handled through wadding body filtering layer
The three-level suspended matter in purification recovered water afterwards.
Step 104 is handled using the purification recovered water after 1 pair of membrane separation plant removal three-level suspended matter, to obtain
The purification recovered water of target stains coefficient.
Wherein, ceramic adsorbent layer 201a, quartz sand filtration layer 201b, activated carbon adsorption layer 201c are set gradually from the bottom to top
In the inside of fine suspension separation equipment 2, and the quartz of the ceramic partial size of ceramic adsorbent layer 201a, quartz sand filtration layer 201b
Sand grains diameter, activated carbon adsorption layer 201c activated carbon particle size be sequentially reduced, with to purification recovered water in suspended matter carry out
Classification removal.
The processing method of purification recovered water provided in an embodiment of the present invention is by third pipeline 7, the 4th pipeline 8 conveying the
One medicament, second medicament, the suspended matter that can be effectively settled out in purification recovered water, and gone by fine suspension separation equipment 2
Except the suspended matter in purification recovered water, can effectively avoid in the suspended particle clogging membrane separation plant 1 in purification recovered water in this way
Seperation film guarantees that membrane separation plant 1 continuously operates normally, and improves the regeneration effect of purification recovered water.
It should be noted that above-mentioned target stains coefficient is less than or equal to 3.
Above-mentioned first medicament is polymeric ferric salt or polyaluminium salts；Above-mentioned second medicament include: macromolecule cation flocculant,
Polyamide polymers, polyacrylamide polymer.First medicament of this type, second medicament are convenient for obtaining, and cost
It is low.
Above-mentioned preset flow rate is less than or equal to 4m/h (for example, the preset flow rate may be configured as 4m/h, 3m/h, 2m/h etc.),
First preset concentration is 9mg/L~11mg/L (for example, the preset concentration may be configured as 9mg/L, 10mg/L, 11mg/L etc.), the
Two preset concentrations are 0.3mg/L~0.5mg/L (for example, the preset concentration may be configured as 0.3mg/L, 0.4mg/L, 0.5mg/L
Deng), effectively the suspended matter purified in recovered water effectively can be precipitated by the setting of above-mentioned parameter.
In use, the addition time of second medicament can be determined according to the spacing of third pipeline 7 and the 4th pipeline 8, lift
For example, in the embodiment of the present invention, addition time interval 20s~30s of second medicament and the first medicament.
All the above alternatives can form the alternative embodiment of the disclosure, herein no longer using any combination
It repeats one by one.
The foregoing is merely presently preferred embodiments of the present invention, the protection scope being not intended to limit the invention, all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.
Claims (12)
1. a kind of processing system for purifying recovered water, including membrane separation plant (1), which is characterized in that the processing system is also wrapped
Include: fine suspension separation equipment (2), first pipe (3), second pipe (4), first pipe mixer (5), second pipe are mixed
Clutch (6), third pipeline (7) and the 4th pipeline (8)；
The inside of the fine suspension separation equipment (2) is disposed with ceramic adsorbent layer (201a), quartz sand from the bottom to top
Filter layer (201b), activated carbon adsorption layer (201c), and the ceramic partial size of the ceramic adsorbent layer (201a), the quartz sand mistake
The quartz sand particle size of filtering layer (201b), the activated carbon particle size of the activated carbon adsorption layer (201c) are sequentially reduced；
The first pipe (3), the second pipe (4) are used to conveying purification recovered water, and the first pipe (3) and institute
State fine suspension separation equipment (2) bottom inlet connection, the both ends of the second pipe (4) respectively with the tiny suspension
The top inlet connection of the top exit, the membrane separation plant (1) of object separation equipment (2)；
The first pipe mixer (5), the second pipe mixer (6) are successively set on first pipe along water (flow) direction
On road (3)；
The third pipeline (7) is connected to the side wall of the first pipe mixer (5), for conveying the first medicament；
4th pipeline (8) is connected to the side wall of the second pipe mixer (6), for conveying second medicament.
2. processing system according to claim 1, which is characterized in that the ceramic adsorbent layer (201a) with a thickness of
390mm~410mm, density 4.0g/cm3~4.5g/cm3, ceramic partial size is 0.5mm~0.8mm；
The quartz sand filtration layer (201b) with a thickness of 490mm~510mm, density 2.64g/cm3~2.66g/cm3, quartz
Sand grains diameter is 0.4mm~0.6mm；
The activated carbon adsorption layer (201c) with a thickness of 290mm~310mm, density 1.29g/cm3~1.31g/cm3, activity
Charcoal partial size is 0.3mm~0.5mm.
3. processing system according to claim 1, which is characterized in that the processing system further include: setting is described thin
Water distributor (202), water collector (203) in small suspended matter separation equipment (2)；
The water distributor (202) is located at the lower section of the ceramic adsorbent layer (201a), and the water collector (203) is located at the activity
The top of charcoal adsorption layer (201c)；
The port of the first pipe (3) stretches in the fine suspension separation equipment (2) to be connected with the water distributor (202)
It is logical；
The port of the second pipe (4) stretches in the fine suspension separation equipment (2) to be connected with the water collector (203)
It is logical.
4. processing system according to claim 3, which is characterized in that the water distributor (202) be arranged to port closed and
Tubular structure with multiple through-holes；
The water collector (203) includes: the transverse tube (203a), multiple screen casings (203b), vertical tube (203c) of port closed；
The screen casing (203b) is connected to the transverse tube (203a) respectively with the vertical tube (203c), and multiple screen casings
(203b) is distributed along the axially spaced-apart of the transverse tube (203a)；
The vertical tube (203c) is connected to the second pipe (4).
5. processing system according to claim 4, which is characterized in that be provided with purification on the outer wall of the screen casing (203b)
Layer.
6. processing system according to claim 5, which is characterized in that the purifying layer is made of cordage.
7. processing system according to claim 6, which is characterized in that the cordage is terylene rope.
8. processing system according to claim 1, which is characterized in that on the third pipeline (7), the 4th pipeline (8)
It is provided with flowmeter (9).
9. processing system according to claim 1, which is characterized in that the third pipeline (7) is additionally provided with the first non-return
Valve (701), the first ball valve (702)；
Second check-valve (801), the second ball valve (802) are additionally provided on 4th pipeline (8).
10. a kind of processing method for purifying recovered water, which is characterized in that the treating method comprises:
According to preset flow rate, into first pipe (3), conveying purifies recovered water, and it is pre- to be added first into third pipeline (7) simultaneously
If the first medicament of concentration, to destroy the charge stability of suspended matter in the purification recovered water, and tiny wadding body is hydrolyzed to form；
When the purification recovered water after first chemicals treatment enters second pipe mixer (6), into the 4th pipeline (8)
The second medicament of the second preset concentration is added, to hydrolyze to form chain macromolecular structure；
The first medicament after hydrolysis, second medicament enter in fine suspension separation equipment (2), are adsorbed to ceramic adsorbent layer
In (201a), trapping layer is formed, to capture the first stage suspension object in the purification recovered water after first chemicals treatment；
After capturing to the first stage suspension object, the trapping layer is retained by quartz sand filtration layer (201b), forms wadding body filtering layer,
With intercept through the trapping layer treated purification recovered water in second level suspended matter；
The activated carbon adsorption layer (201c) removal is through the three-level suspended matter in the wadding body filtering layer treated purification recovered water；
The purification recovered water after removing the three-level suspended matter is handled using membrane separation plant (1), to obtain target dirt
Contaminate the purification recovered water of coefficient；
Wherein, the ceramic adsorbent layer (201a), the quartz sand filtration layer (201b), the activated carbon adsorption layer (201c) by
Under the supreme inside for being successively set on the fine suspension separation equipment (2), and ceramics of the ceramic adsorbent layer (201a)
Partial size, the quartz sand particle size of the quartz sand filtration layer (201b), the activated carbon adsorption layer (201c) activated carbon particle size according to
Secondary reduction, to carry out classification removal to the suspended matter in the purification recovered water.
11. processing method according to claim 10, which is characterized in that first medicament is polymeric ferric salt or polymeric aluminum
Salt, the second medicament include: macromolecule cation flocculant, polyamide polymers, polyacrylamide polymer.
12. processing method according to claim 11, which is characterized in that the preset flow rate is less than or equal to 4m/h；
First preset concentration is 9mg/L~11mg/L, and second preset concentration is 0.3mg/L~0.5mg/L.
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Application publication date: 20191018 |