CN107055915A - A kind of natural gas sewage pre-treatment device and method - Google Patents
A kind of natural gas sewage pre-treatment device and method Download PDFInfo
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- CN107055915A CN107055915A CN201710419403.3A CN201710419403A CN107055915A CN 107055915 A CN107055915 A CN 107055915A CN 201710419403 A CN201710419403 A CN 201710419403A CN 107055915 A CN107055915 A CN 107055915A
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- tank
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
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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
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of natural gas sewage pre-treatment device and method, wherein device includes water tank, raw water pump, refining agent pump, flocculant head tank, preprocessor and the salt dredge pump coupled successively；Preprocessor includes the raw water surge tank and smart water storage tank positioned at bottom, raw water surge tank after smart water storage tank segmentation with being reserved with for arranging that swash plate settling tank bores the passage of bottom discharge pipeline, preprocessor also includes the swash plate settling tank positioned at middle and upper part, positioned at the refined baffling groove and the siphon filter body positioned at swash plate settling tank middle and lower part outer circumference of swash plate settling tank top outer circumference.In natural gas sewage pre-treatment device provided by the present invention, preprocessor is both used for the refining reaction of natural gas sewage disinfection treatment, it is also used for the flocculation reaction of natural gas sewage disinfection treatment, the function of siphon filtering, sewage raw water buffering and the smart water storage of sewage has been also equipped with simultaneously, it is few with single device quantity, compact arrangement of equipment, and realize the multi-functional of single device.
Description
Technical field
The present invention relates to natural gas sewage disinfection treatment field, the associated natural gas of more particularly to a kind of natural gas extraction is dirty
Water pre-treatment means and method.
Background technology
In the gas exploitation course of petrochina and sinopec, the certain sewage containing mineralizer of inevitable association, however,
Due to environmental requirement, sewage qualified discharge or carries out re-injection in the case where not handling again after must being handled.
In the prior art, qualified discharge or re-injection is carried out in the case where not handling after whether handling, will be by
Sewage is transported to centrostigma with tank wagon or is piped to centrostigma, and transportation range depends on natural gas well station to centrostigma
Distance, either transport or pipeline cost it is all very high.
Meanwhile, in natural gas Sewage Treatment Project of the prior art, using pretreatment → RO films concentration → evaporation and concentration
The technological process of → centrifugation → fluidized bed drying, due to pretreatment be in sewage former pond plus soda ash carry out at normal temperatures it is pre-
Ca in processing, sewage essence water2+、Mg2+Ion concentration is higher, and larger, Er Qiexu is influenceed on the service life that follow-up RO films are concentrated
The sewage-treatment plant that disposal ability is larger is wanted, the floor space of the big sewage-treatment plant of disposal ability is also larger, is not suitable for
Sewage disposal in mini gas well station.
Therefore, the cost of natural gas sewage disinfection treatment how is reduced, is the skill that those skilled in the art need to solve at present
Art problem.
The content of the invention
It is an object of the invention to provide a kind of natural gas sewage pre-treatment device and method, for reducing natural gas extraction
In, the cost of natural gas sewage disinfection treatment and the floor space of natural gas sewage pre-treatment device.
To achieve the above object, the present invention provides following technical scheme：
A kind of natural gas sewage pre-treatment device, including the water tank, raw water pump, refining agent pump, the flocculant that couple successively are high
Position groove, preprocessor and salt dredge pump；The preprocessor includes the raw water surge tank and smart water storage tank positioned at bottom, the raw water
Surge tank after the smart water storage tank segmentation with being reserved with for arranging that swash plate settling tank bores the passage of bottom discharge pipeline, the pretreatment
Device also include positioned at middle and upper part swash plate settling tank, positioned at the swash plate settling tank top outer circumference refined baffling groove and
Positioned at the siphon filter body of the swash plate settling tank middle and lower part outer circumference.
It is preferred that, in addition to siphon filter, the siphon filter includes being combined in described in the preprocessor
Siphon filter body, water inlet distributor box, water sealed tank and siphonic system pipeline positioned at the water tank middle and upper part；The water tank
Including 1 be located at the water tank middle upper portion water sealed tank and 2 be located at the water tank both sides and can mutually switch refine
Agent make-up tank.
It is preferred that, the middle part of the swash plate settling tank is provided with aggregation room, the aggregation room provided with S pipes, institute
State and be additionally provided with the flocculant import that S pipes add the S pipes provided with confession flocculant, the S pipes for the sewage after refining reaction
Thick water flows into the S pipes, and the thick water inlet of sewage mixed with the flocculant.
It is preferred that, it is additionally provided with positioned at the outside of the aggregation room of the swash plate settling tank middle and upper part for the oblique of salt slurry sedimentation
Provided with cone bottom below plate, the swash plate, the top of the swash plate settling tank is provided with flow to the water inlet distributor box certainly for clear liquid
Overflow circle.
It is preferred that, the siphon filter body includes thick water cavity and smart water cavity, and the siphon filter body bag
Include the siphon for flowing into the thick water cavity for the thick water of sewage and rise interface tube, for connecting the thick water cavity and the smart water cavity and mistake
Filter the filter mantle of the thick water of sewage, the smart water down-comer for connecting the smart water cavity and the smart water storage tank.
It is preferred that, siphon destructive interface tube and exhaust outlet, the siphon filtering are additionally provided with the siphon filter body
The overflow down-comer that raw water surge tank is flowed into for the smart water of sewage is additionally provided with the smart water cavity of device body.
A kind of natural gas sewerage pretreatment method, comprises the following steps：
Step S1：Sewage raw water is sufficiently mixed in refined baffling groove with refining agent and concurrently gives birth to refining reaction, while right
The sewage raw water is heated；
Step S2：The thick water of sewage after will be refined is condensed reaction, the salt of formation in swash plate settling tank with flocculant
Mud is settled in the swash plate settling tank；
Step S3：The thick water gravity flow of the sewage after clarification is entered after siphon filter carries out mechanical filter and obtains pre- place
The smart water of sewage after reason.
It is preferred that, in the step S1, Na in the refining agent2CO3Mixture concentration with NaOH is 9%-11%.
It is preferred that, in the step S1, the heating-up temperature to the sewage raw water is 50~60 DEG C.
It is preferred that, in the step S2, the flocculant is macromolecule sodium polyacrylate or FeCl3, and the flocculation
The concentration of agent is 4%-6%.
Natural gas sewage pre-treatment device provided by the present invention, including water tank, raw water pump, the refining agent coupled successively
Pump, flocculant head tank, preprocessor and salt dredge pump；The preprocessor includes the raw water surge tank and smart water storage positioned at bottom
Tank, the raw water surge tank after the smart water storage tank segmentation with being reserved with for arranging the logical of swash plate settling tank cone bottom discharge pipeline
Road, the preprocessor also includes the swash plate settling tank positioned at middle and upper part, positioned at the swash plate settling tank top outer circumference
Refined baffling groove and the siphon filter body positioned at the swash plate settling tank middle and lower part outer circumference.
In the natural gas sewage pre-treatment device, the preprocessor is both for the refined anti-of natural gas sewage disinfection treatment
Should, the flocculation reaction of natural gas sewage disinfection treatment is also used for, while being also equipped with siphon filtering, sewage raw water buffering and sewage essence
The function of water storage, compact arrangement of equipment few with single device quantity, and realize the multi-functional of single device.
Natural gas sewerage pretreatment method provided by the present invention, comprises the following steps：By sewage raw water in refined baffling
It is sufficiently mixed in groove with refining agent and concurrently gives birth to refining reaction, while is heated to the sewage raw water；Sewage after will be refined
Thick water makes CaCO in swash plate settling tank3With Mg (OH)2Occurs aggregation with flocculant, to accelerate its sinking speed；Meanwhile,
The thick water gravity flow of sewage after clarification enters siphon filter and obtained after mechanical filter at the smart water of pretreated sewage, sewage
Efficiency high is managed, precision is high.
Brief description of the drawings
Implement an example or technical scheme of the prior art in order to illustrate more clearly of the present invention, below will be to implementing an example
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some implementation examples of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of knot of embodiment of preprocessor in natural gas sewage pre-treatment device provided by the present invention
Structure schematic diagram；
Fig. 2 is the flow chart of natural gas sewerage pretreatment method provided by the present invention；
Fig. 3 is the schematic diagram of natural gas sewerage pretreatment method provided by the present invention；
Wherein：1-raw water surge tank, 1-1-raw water outlet, the original water inlets of 1-2-first, 2-siphon filter body,
2-1-siphon rises interface tube (thick water inlet), and 2-2-thick water cavity, 2-3-overflow down-comer, 2-4-siphon destructing tube connects
Mouthful, 2-5-essence water cavity, 2-6-exhaust outlet, 2-7-essence water down-comer, 2-8-filter mantle, 3-water inlet distributor box,
4-refine baffling groove, the original water inlets of 4-1-second, 4-2-refining agent import, 4-3-deflection plate, 5-swash plate settling tank, 5-
The import of 1-flocculant, 5-2-peep hole, 5-3-overflow circle, 5-4-S pipes, 5-5-aggregation room, 5-6-swash plate, 5-
7-cone bottom, 6-essence water storage tank, 6-1-essence water refluxing opening, 6-2-essence water out, 7-passage.
Embodiment
The core of the present invention is to provide a kind of natural gas sewage pre-treatment device and method, for realizing many of single device
Function, saves floor occupying area.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1 to Fig. 3 is refer to, Fig. 1 is preprocessor one kind in natural gas sewage pre-treatment device provided by the present invention
The structural representation of embodiment；Fig. 2 is the flow chart of natural gas sewerage pretreatment method provided by the present invention；Fig. 3
For the schematic diagram of natural gas sewerage pretreatment method provided by the present invention.
In this embodiment, natural gas sewage pre-treatment device includes water tank, raw water pump, the refining agent coupled successively
Pump, flocculant head tank, preprocessor and salt dredge pump；Preprocessor includes the raw water surge tank 1 and smart water storage tank positioned at bottom
6, raw water surge tank 1 is reserved with the passage 7 that 5-7 spoil disposals operation in bottom is bored for swash plate settling tank 5, raw water after splitting with smart water storage tank 6
It can specifically be separated between surge tank 1 and smart water storage tank 6 with dividing plate, preprocessor also includes the swash plate settling tank positioned at middle and upper part
5, positioned at the refined baffling groove 4 of the top outer circumference of swash plate settling tank 5 and positioned at the middle and lower part outer circumference of swash plate settling tank 5
Siphon filter body 2.
Specifically, raw water surge tank 1 is used for the buffering of raw water, it controls liquid level 30% or so, and its complementary space is reserved
Backwash water storage during to siphon filter backwash is used.
In the natural gas sewage pre-treatment device, preprocessor is both used for the refining reaction of natural gas sewage disinfection treatment,
For the flocculation reaction of natural gas sewage disinfection treatment, while being also equipped with siphon filtering, sewage raw water buffering and the smart water storage of sewage
The function of depositing, compact arrangement of equipment few with single device quantity, and realize the multi-functional of single device.
Wherein, flocculant head tank is used to preparing and storing flocculant, and flocculant head tank is not particularly limited；Raw water pump
For conveying in sewage raw water to the refined baffling groove 4 of preprocessor, raw water pump is not particularly limited；Refining agent pump is used to convey
In refining agent to the refined baffling groove 4 of preprocessor, refining agent pump is not particularly limited；Salt dredge pump is used to convey salt slurry to drying
Process, salt dredge pump is not particularly limited.
On the basis of the respective embodiments described above, the bottom of raw water surge tank 1 exports 1-1 provided with raw water, and raw water is from raw water
Surge tank 1 enters the entrance of raw water pump；The bottom of smart water storage tank 6 is provided with smart water out 6-2, and smart water out 6-2 is used for for smart water
Enter film condensing device charge pump from smart water storage tank 6, the top of smart water storage tank 6 is provided with smart water refluxing opening 6-1, smart water refluxing opening 6-
1 is used to collect the smart water that combustion gas vaporising device is discharged；Meanwhile, the side for refining baffling groove 4 is provided with refining agent import 4-2, specifically
, refining agent import 4-2 and the second original water inlet 4-1 can be same import；Raw water outlet 1-1 is raw water from raw water surge tank
1 enters the entrance of raw water pump.
On the basis of the respective embodiments described above, the setting as the heating, mixing and refining reaction of raw water of baffling groove 4 is refined
It is standby, it can make sewage raw water and refining agent (i.e. Na provided with polylith deflection plate 4-32CO3+ NaOH solution) it is sufficiently mixed, and at it
Middle generation refining reaction Ca2++CO3 2-→CaCO3↓ and Mg2++2OH-→Mg(OH)2↓。
On the basis of the respective embodiments described above, the natural gas sewage pre-treatment device also includes siphon filter, siphon
Filter includes siphon filter body 2, the water inlet distributor box 3, the water seal positioned at water tank middle and upper part being combined in preprocessor
Groove and siphonic system pipeline, siphon filter body 2 are the mechanical filter parts of siphon filter；Water tank is located at including 1
The water sealed tank of water tank middle upper portion and 2 both sides for being located at water tank and the refining agent make-up tank that can mutually switch.Wherein, water sealed tank
Play water seal in siphon filter, refining agent make-up tank is used to prepare and stores refining agent, it is necessary to which explanation, is refined
Agent is not particularly limited.
Specifically, water inlet distributor box 3 is placed in the side of swash plate settling tank 5, positioned at the bottom of refined baffling groove 4 and siphon
The top of filter body 2, water inlet distributor box 3 is the spatial cache that thick water enters siphon filter body 2.
On the basis of the respective embodiments described above, the middle and upper part of swash plate settling tank 5 is provided with aggregation room 5-5, and cohesion is anti-
Answer to be provided with provided with S pipes 5-4, S pipe 5-4 in the 5-5 of room and added for flocculant on S pipes 5-4 flocculant import 5-1, S pipe 5-4 also
Provided with the thick water inlet of sewage for flowing into S pipes 5-4 for the thick water of sewage after refining reaction and being mixed with flocculant.Specifically, swash plate
Settling tank 5 is that the thick water after refining is added after flocculant with sediment in aggregation room 5-5 generation aggregations, then oblique
Carry out surface settlement on plate 5-6, flocculant import 5-1 is used to enter S pipe 5-4 after flocculant is added, with it is refined after thick water
It is sufficiently mixed.
On the basis of the respective embodiments described above, aggregation room 5-5 outside is additionally provided with the swash plate 5- settled for salt slurry
Provided with cone bottom 5-7 below 6, swash plate 5-6, the top of swash plate settling tank 5 is provided with the overflow being flow to certainly for clear liquid into water distributor box 3
Enclose 5-3.
On the basis of the respective embodiments described above, siphon filter body 2 includes thick water cavity 2-2 and smart water cavity 2-5, and
Siphon filter body 2 includes rising interface tube 2-1 for the siphon that the thick water of sewage flows into thick water cavity 2-2, for connecting thick water cavity
2-2 and essence water cavity 2-5 and the thick water of filter sewage filter mantle 2-8, for connecting smart water cavity 2-5 and smart water storage tank 6
Smart water down-comer 2-7.
It is used to enter siphon filter body 2 and mistake for thick water specifically, siphon rises interface tube 2-1 (i.e. thick water inlet)
The backwash filter mantle 2-8 of filter body 2 backwash water exits into siphon tedge；Thick water cavity 2-2 is that thick water enters
The spatial cache of siphon filter body 2.
On the basis of the respective embodiments described above, siphon destructive interface tube 2-4 and row are additionally provided with siphon filter body 2
The overflow for flowing into raw water surge tank 1 for the smart water of sewage is additionally provided with gas port 2-6, the smart water cavity 2-5 of siphon filter body 2 to decline
Pipe 2-3.Wherein, overflow down-comer 2-3 is the passage that gravity flow enters raw water surge tank 1 when smart aqueous position exceeds setting position；Rainbow
It is empty when smart water cavity 2-5 liquid level drops to siphon destructive interface tube 2-4 when suction destruction interface tube 2-4 is siphon filter backwash
Gas can be automatically into making to have formed siphon destructive in siphon pipe；Smart water cavity 2-5 is spatial cache and the storage of backwash water of smart water
Deposit space；Exhaust outlet 2-6 is smart water cavity 2-5 is under atmospheric pressure state.
Specifically, S pipes 5-4 be used for will it is refined after thick water sufficiently mixed with flocculant, flocculant is from flocculant
Import 5-1 is added to be mixed in S pipes 5-4 with the thick water of the sewage after refining reaction in S pipes 5-4, and in aggregation room 5-5
Middle generation aggregation, specifically, aggregation room 5-5 can make the thick water after being sufficiently mixed occur cohesion instead with flocculant
Should, can accelerate the decrease speed of sediment (being commonly called as salt slurry).
The thick water of sewage after aggregation can rise to aggregation after being come out from the horn mouth of aggregation room 5-5 bottoms
Swash plate 5-6 outside the 5-5 of room, and surface settlement is produced on swash plate 5-6, swash plate 5-6 can increase surface settlement area, salt slurry
Slid from swash plate 5-6 surface to cone bottom 5-7, specifically, cone bottom 5-7 setting can be in order to which salt slurry be out of swash plate settling tank 5
Discharge, when salt slurry is deposited to certain altitude, the clear liquid layer height that can be specifically observed from peep hole 5-2 is determined, will
Salt slurry is discharged from cone bottom 5-7.Clear liquid rises to overflow circle 5-3 from flowing into water distributor box 3, and overflow circle 5-3 will be used for after clarifying
Clear liquid collect.
Siphon filter body 2, breaks provided with siphon rising interface tube 2-1, thick water cavity 2-2, overflow down-comer 2-3, siphon
Bad interface tube 2-4, smart water cavity 2-5, exhaust outlet 2-6, smart water down-comer 2-7, filter mantle 2-8；Siphon filter bag
Include siphon filter body 2, water inlet distributor box 3, water sealed tank and siphonic system；Overflow circle of the thick water of sewage from swash plate settling tank 5
5-3 gravity flows enter water inlet distributor box 3, then flow through siphon tedge certainly from water inlet siphon tedge of the distributor box 3 through siphonic system
Interface 2-1 (i.e. thick water inlet) enters the thick water cavity 2-2 of siphon filter body 2, filters laggard through filter mantle 2-8
Enter smart water cavity 2-5, when the smart aqueous position of sewage rises to smart water down-comer 2-7 top, the smart water of sewage after filtering is through smart water
Down-comer 2-7 gravity flows enter smart water storage tank 6.
Wherein, smart water down-comer 2-7 is the passage that smart water gravity flow enters smart water storage tank 6.The filter mantle of setting
2-8 is the mechanical admixture and sediment in the thick water of mechanical filter, so as to obtain smart water.
Smart water storage tank 6 is used for the storage of smart water, and after smart water storage tank 6 is filled with, smart water cavity 2-5 liquid level is continued to rise to
Overflow down-comer 2-3 top, enters raw water surge tank 1 through overflow down-comer 2-3 gravity flows.With filter mantle 2-8
The increase of the impurity of retention, the filter mantle 2-8 rate of filtration constantly slows down, the liquid level of siphon tedge also constantly on
Rise, when rising to certain liquid level, the liquid in siphon tedge flows out out of auxiliary enlarged tube, the air in siphonic system
With being carried over, siphonage is formd after air is all taken out of.Now largely to flow out backwash micro- for smart water cavity 2-5 water
Hole ceramic filter tube 2-8, and the impurity adsorbed on filter mantle 2-8 surfaces is progressively cleaned up, backwash water warp
Siphon tedge to siphon down-comer enters water sealed tank, then from the first original water inlet 1-2 is flowed through into raw water surge tank 1, first
Backwash water when original water inlet 1-2 is for raw water and siphon filter backwash flows into raw water surge tank 1 and used.As smart water cavity 2-5
Liquid level when dropping to siphon destructive interface tube 2-4 positions, air enters siphon destructing tube from siphon destructive interface tube 2-4, from
And destroy the siphonage of siphonic system.Then recover the normal technological process of production, smart water cavity 2-5 liquid after siphon destructive
Position continues to rise to smart water down-comer 2-7 top, and enters smart water storage tank 6 from smart water down-comer 2-7.
The natural gas sewage pre-treatment device and the operation principle of method that this implementation example is provided are as follows：
1st, the sewage raw water from cesspool enters raw water surge tank 1 through water sealed tank, then is sent sewage raw water with raw water pump
Enter refined baffling groove 4, while refining agent is sent into refined baffling groove 4 with refining agent pump, from being concentrated by evaporation or dry afterbody
Waste heat heats sewage raw water to 50~60 DEG C in refined baffling groove 4.
2nd, sewage raw water is while heating and refining agent carries out sufficient hybrid concurrency production of sperm system in refined baffling groove 4
Reaction.
3rd, the thick water gravity flow of sewage after refining reaction enters the aggregation room 5-5 of swash plate settling tank 5, while anti-to cohesion
Room 5-5 is answered to add flocculant, to accelerate the sedimentation of salt slurry.The thick water of sewage after aggregation is from aggregation room 5-5 bottoms
The swash plate 5-6 that horn mouth can be risen to after coming out outside the 5-5 of aggregation room, and produce on swash plate 5-6 surface settlement, salt slurry
Slide to cone bottom 5-7, when salt slurry is deposited to certain altitude, salt slurry is discharged from cone bottom 5-7 from swash plate 5-6 surface.Clear liquid
Overflow circle 5-3 is risen to flow into water distributor box 3 certainly.
4th, the thick water cavity of siphon filter body 2 is entered from siphon tedge gravity flow of the water inlet distributor box 3 through siphonic system
2-2, enters smart water cavity 2-5 after being filtered through filter mantle 2-8, when the smart aqueous position of sewage rises to smart water down-comer 2-7
Top when, the smart water of sewage after filtering enters smart water storage tank 6 through smart water down-comer 2-7 gravity flows.When smart water storage tank 6 fills with it
Afterwards, smart water cavity 2-5 liquid level continues to rise to overflow down-comer 2-3 top, and entering raw water through overflow down-comer 2-3 gravity flows delays
Rush tank 1.When the filter mantle 2-8 impurity adsorbed reaches certain degree, siphonic system can automatically form siphon, so that
Backwash is carried out to filter mantle 2-8, when smart water cavity 2-5 liquid level drops to certain position, siphon destructing tube connects
Mouth 2-4 exposes liquid level, admits air into siphon destructing tube, so as to stop backwash, returns to normal production.
In addition to above-mentioned natural gas sewage pre-treatment device, present invention also offers a kind of natural gas sewerage pretreatment method,
Comprise the following steps：
Step S1：Sewage raw water is sufficiently mixed in refined baffling groove 4 with refining agent and concurrently gives birth to refining reaction, while right
Sewage raw water is heated, specifically, it is possible to use the waste heat for being concentrated by evaporation or drying afterbody is heated, and realizes following for heat
Ring is utilized, and saves the energy；
Step S2：The thick water of sewage after will be refined is condensed reaction, the salt of formation in swash plate settling tank 5 with flocculant
Mud is settled in swash plate settling tank 5；
Step S3：The thick water gravity flow of sewage after clarification is entered after siphon filter carries out mechanical filter and obtained after pretreatment
The smart water of sewage.
The natural gas sewerage pretreatment method, the thick water of sewage after refining adds flocculant in swash plate settling tank 5, makes
CaCO3With Mg (OH)2Occur aggregation with flocculant, to accelerate its sinking speed, meanwhile, the thick water gravity flow of sewage after clarification
Carry out obtaining the smart water of pretreated sewage after mechanical filter into siphon filter, sewage treating efficiency is high, and precision is high.
On the basis of the respective embodiments described above, in step S1, Na in refining agent2CO3Mixture concentration with NaOH is
9%-11%, most preferable concentrations are 10%, and refining agent is by Ca in sewage raw water2+：Mg2+Ratio determine Na2CO3：NaOH
Ratio, make the Ca in sewage raw water2+、Mg2+With refining agent refining reaction fully occurs for ion, it is ensured that Ca in sewage essence water2+、
Mg2+Ion concentration≤10mg/L.
On the basis of the respective embodiments described above, in step S1, the heating-up temperature to sewage raw water is 50~60 DEG C.
On the basis of the respective embodiments described above, in step S2, flocculant is macromolecule sodium polyacrylate or FeCl3, and
And the concentration of flocculant is 4%-6%.
The technological process for the natural gas sewerage pretreatment method that the present embodiment is provided is as shown in figure 3, including three techniques
Circuit：
1st, sewage disinfection treatment circuit
Sewage raw water enters raw water surge tank 1 through water sealed tank gravity flow, then delivers into refined baffling groove 4 by raw water pump, profit
Heated with the waste heat for being concentrated by evaporation or drying afterbody, refining reaction is concurrently given birth to while adding refining agent and being sufficiently mixed
Ca2++Na2CO3→CaCO3↓+2Na+, Mg2++2NaOH→Mg(OH)2↓+2Na+；The thick water gravity flow of sewage after refining reaction enters
Swash plate settling tank 5, thick water is through its swash plate 5-6 after 5-5 addition flocculants in its aggregation room are condensed reaction, aggregation
Surface settlement is carried out, clear liquid gravity flow enters siphon filter, and drying is gone in the salt slurry salt dredge pump conveying of bottom discharge.Through siphon
Filter the smart water gravity flow of obtained sewage and enter smart water storage tank 6.
2nd, refining agent prepares circuit
The Na of certain proportioning and weight is added in refining agent make-up tank (one open one standby)2CO3And NaOH, then from siphon
The smart water of a certain amount of sewage is released in filter, refined agent solution is configured to, refined baffling is added on request with refining agent pump
Groove 4.
3rd, flocculating agent formulation circuit
Flocculant macromolecule sodium polyacrylate or FeCl are added in flocculant head tank3Deng, with film concentration charging pump out
The smart water of the sewage of mouth is prepared, and gravity flow on request is added in the S pipes 5-4 of swash plate settling tank 5.
The sewage raw water of refined baffling groove 4, is heated to by the sewage water treatment method using the waste heat for being concentrated by evaporation or drying
50~60 DEG C, while adding refining agent (Na in refined baffling groove 42CO3+ NaOH) solution be sufficiently mixed concurrently give birth to refining reaction,
Make the Ca in sewage raw water2+、Mg2+With refining agent refining reaction fully occurs for ion, it is ensured that Ca in sewage essence water2+、Mg2+Ion
Content≤10mg/L.
Natural gas sewage pre-treatment device provided by the present invention and method are described in detail above.Herein should
The principle and embodiment of the present invention are set forth with specific case, the explanation that the above implements an example is only intended to help
Understand the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not taking off
On the premise of from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this
In invention scope of the claims.
Claims (10)
1. a kind of natural gas sewage pre-treatment device, it is characterised in that including the water tank coupled successively, raw water pump, refining agent pump,
Flocculant head tank, preprocessor and salt dredge pump；The preprocessor includes the raw water surge tank (1) and smart water storage positioned at bottom
Tank (6), the raw water surge tank (1) after smart water storage tank (6) segmentation with being reserved with for arranging that swash plate settling tank (5) bores bottom
The passage (7) of (5-7) discharge pipeline, the preprocessor also includes the swash plate settling tank (5) positioned at middle and upper part, positioned at the swash plate
The refined baffling groove (4) of settling tank (5) top outer circumference and positioned at swash plate settling tank (5) middle and lower part outer circumference
Siphon filter body (2).
2. natural gas sewage pre-treatment device according to claim 1, it is characterised in that also including siphon filter, institute
Stating siphon filter includes the siphon filter body (2) being combined in the preprocessor, water inlet distributor box (3), position
Water sealed tank and siphonic system pipeline in the water tank middle and upper part；The water tank includes 1 and is located at the water tank middle upper portion
Water sealed tank and 2 both sides and the refining agent make-up tank that can mutually switch for being located at the water tank.
3. natural gas sewage pre-treatment device according to claim 2, it is characterised in that the swash plate settling tank (5)
Middle part is provided with aggregation room (5-5), provided with S pipes (5-4) in the aggregation room (5-5), and the S pipes (5-4) are provided with
Add and be additionally provided with the flocculant import (5-1) of the S pipes (5-4), the S pipes (5-4) for after refining reaction for flocculant
The thick water of sewage flows into the S pipes (5-4) and the thick water inlet of sewage mixed with the flocculant.
4. natural gas sewage pre-treatment device according to claim 3, it is characterised in that positioned at the swash plate settling tank
(5) outside of the aggregation room (5-5) of middle and upper part is additionally provided with the swash plate (5-6) settled for salt slurry, the swash plate (5-6)
Face is provided with cone bottom (5-7), and the top of the swash plate settling tank (5) is provided with flow to overflowing for the water inlet distributor box (3) certainly for clear liquid
Stream circle (5-3).
5. natural gas sewage pre-treatment device according to claim 2, it is characterised in that the siphon filter body
(2) thick water cavity (2-2) and smart water cavity (2-5) are included, and the siphon filter body (2) includes flowing into institute for the thick water of sewage
The siphon for stating thick water cavity (2-2) rises interface tube (2-1), for connecting the thick water cavity (2-2) and the smart water cavity (2-5) simultaneously
The filter mantle (2-8) of the thick water of filter sewage, for connecting the smart water cavity (2-5) and the smart water storage tank (6)
Smart water down-comer (2-7).
6. natural gas sewage pre-treatment device according to claim 5, it is characterised in that the siphon filter body
(2) siphon destructive interface tube (2-4) and exhaust outlet (2-6), the smart water cavity (2- of the siphon filter body (2) are additionally provided with
5) the overflow down-comer (2-3) that raw water surge tank (1) is flowed into for the smart water of sewage is additionally provided with.
7. a kind of natural gas sewerage pretreatment method, it is characterised in that comprise the following steps：
Step S1：Sewage raw water is sufficiently mixed in refined baffling groove (4) with refining agent and concurrently gives birth to refining reaction, while to institute
Sewage raw water is stated to be heated；
Step S2：The thick water of sewage after will be refined is condensed reaction, the salt slurry of formation in swash plate settling tank (5) with flocculant
Settled in the swash plate settling tank (5)；
Step S3：The thick water gravity flow of the sewage after clarification is entered after siphon filter carries out mechanical filter and obtained after pretreatment
The smart water of sewage.
8. natural gas sewerage pretreatment method according to claim 7, it is characterised in that in the step S1, the essence
Na in preparation2CO3Mixture concentration with NaOH is 9%-11%.
9. natural gas sewerage pretreatment method according to claim 7, it is characterised in that in the step S1, to described
The heating-up temperature of sewage raw water is 50~60 DEG C.
10. natural gas sewerage pretreatment method according to claim 7, it is characterised in that in the step S2, the wadding
Solidifying agent is macromolecule sodium polyacrylate or FeCl3, and the concentration of the flocculant is 4%-6%.
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| CN110240294A (en) * | 2019-07-12 | 2019-09-17 | 新疆天业（集团）有限公司 | A wastewater softener |
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