CN109851140A - A kind of oil gas field brine waste efficiently catalyzing and oxidizing coupling hard-removal system and technique - Google Patents
A kind of oil gas field brine waste efficiently catalyzing and oxidizing coupling hard-removal system and technique Download PDFInfo
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- CN109851140A CN109851140A CN201910046829.8A CN201910046829A CN109851140A CN 109851140 A CN109851140 A CN 109851140A CN 201910046829 A CN201910046829 A CN 201910046829A CN 109851140 A CN109851140 A CN 109851140A
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Abstract
The invention discloses a kind of oil gas field brine waste efficiently catalyzing and oxidizing coupling hard-removal system and techniques, system includes sequentially connected adjusting water pot, delivery pump and integrated reacting device, and the integrated reacting device includes the catalytic oxidation reaction device being successively linked in sequence, sustained response area, pH regulation area, softening reaction zone, coagulating area, flocculation reaction area and depositing separation area；The adjusting water pot, catalytic oxidation reaction device, sustained response area and pH regulation area are connected with blower；The softening reaction zone and depositing separation area are connected with sludge reflux pump；The catalytic oxidation reaction device is connected with DC power supply.Compared with prior art, the positive effect of the present invention is: processing unit uses highly integrated integrated design, and an equipment completes 2~3 functions, reduces land occupation, convenient for management, reduces labor intensity；Chemical agent is utilized to greatest extent；Biodegradability is improved, CODcr in water is reduced.
Description
Technical field
The present invention relates to oil gas field brine wastes to improve biodegradability, degradation CODcr and the coupling technique for removing hardness, special
It is not a kind of oil gas field brine waste efficiently catalyzing and oxidizing coupling in the processing of the brine waste of oil gas field containing high concentration salinity except hard
Technique.
Background technique
Currently, main technique has Dual alkali, but this technique contains in high salt oil gas field for hardness is removed in common sewage
Salt waste water be water quality background under conditions of, 50% is reached to the removal most multipotency of hardness, while the method is organic to macromolecular in water
The removal of object also based on flocculation sedimentation, contributes the removal of CODcr lower.
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention provides a kind of couplings of oil gas field brine waste efficiently catalyzing and oxidizing
Hard-removal system and technique, reach with low investment, occupied area is small, stable effluent quality, convenient for management and operation, be fully able to realize
Automation control thoroughly solves the problems, such as simple Dual alkali removal hardness inefficiency.
The technical scheme adopted by the invention is that: a kind of oil gas field brine waste efficiently catalyzing and oxidizing coupling hard-removal system,
Including sequentially connected adjusting water pot, delivery pump and integrated reacting device, the integrated reacting device includes successively sequence
The catalytic oxidation reaction device of connection, sustained response area, pH regulation area, softening reaction zone, coagulating area, flocculation reaction area and
Depositing separation area；The adjusting water pot, catalytic oxidation reaction device, sustained response area and pH regulation area are connected with blower；Institute
It states softening reaction zone and depositing separation area is connected with sludge reflux pump；The catalytic oxidation reaction device and DC power supply phase
Even, PH online instrument table, liquidometer, automatic device of adding acid are mounted in adjusting water pot and pH regulation area；Softening reaction zone,
Coagulating area, flocculation reaction area are separately installed with automatic medicine adding apparatus；The PH online instrument table, liquidometer, automatical dosing dress
It sets and is connected with PLC control system with automatic medicine adding apparatus.
The present invention also provides a kind of oil gas field brine waste efficiently catalyzing and oxidizings to couple hardness removing process, including walks as follows
It is rapid:
(1) in the catalytic oxidation reaction device, the current density between cathode-anode plate is controlled in 0.5~6A/cm2,
Under the synergistic effect of oxygen, the electric field that cathode-anode plate generates and catalytic filler that bottom aerator provides, produced in system
Raw great amount of hydroxy group free radical carries out oxygenolysis to pollutant, calcium ions and magnesium ions is released from the state that contaminated object wraps up
Come；
(2) residence time of the sewage in the sustained response area is 0.5~2h, to decompose pollutant further；
(3) automatic medicine adding apparatus of the softening reaction zone releases (1) step for adding mixing softening medicament
Calcium ions and magnesium ions with softening medicament come into full contact with；
(4) the automatic medicine adding apparatus difference dosing coagulant and flocculant in the coagulating area, flocculation reaction area.
Compared with prior art, the positive effect of the present invention is:
1, the processing unit in technique uses highly integrated integrated design, and an equipment is completed 2~3 functions, subtracted
Few land occupation, it is convenient for management, reduce labor intensity；
2, chemical agent is utilized to greatest extent.Due in oil gas field brine waste calcium ions and magnesium ions existing forms have 50% with
On be ion beam or be surrounded by water molecules form, it is difficult to except hard medicament combines, broken by catalysis oxidation and change this package shape
State is exposed to calcium ions and magnesium ions in water, to sufficiently react with precipitating medicament, pharmaceutical use is greatly reduced；
3, biodegradability is improved, CODcr in water is reduced.Catalysis oxidation generates great amount of hydroxy group free radical, to make cyclic annular point
Son is interrupted decomposition, and partial organic substances are broken down into carbon dioxide and water, makes BOD in water5/ CODcr promotes 3~5 times, water outlet
CODcr degradation rate is 30%~60%.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the structural schematic diagram that oil gas field brine waste efficiently catalyzing and oxidizing of the invention couples hard-removal system.
In figure: 1. adjust water pot, 2. delivery pumps, 3. blowers, 4. catalyst oxidation reactors, 5. sustained response areas, 6.pH tune
Save area, 7. softening reaction zones, 8. coagulating areas, 9. flocculation reaction areas, 10. sludge reflux pumps, 11. depositing separation areas, 12. directly
Galvanic electricity source, 13-22. pipeline.
Specific embodiment
A kind of oil gas field brine waste efficiently catalyzing and oxidizing couples hard-removal system, as shown in Figure 1, comprising: adjusts water pot, defeated
Send pump, blower, PLC control system, catalyst oxidation reactor, sustained response area, pH regulation area, softening reaction zone, coagulating
Area, flocculation reaction area, sludge reflux pump, depositing separation area, DC power supply and in-line meter etc., in which:
Oil gas field brine waste is connected by pipeline 13 with water pot 1 is adjusted, and is adjusted water pot 1 and is passed through pipeline 14 and delivery pump 2
Be connected, delivery pump 2 is connected by pipeline 15 with catalytic oxidation reaction device 4, catalytic oxidation reaction device 4, sustained response area 5,
PH regulation area 6, softening reaction zone 7, coagulating area 8, flocculation reaction area 9, depositing separation area 11 are successively linked in sequence and form one
Body reaction unit, integrated reacting device are delivered to water collect tank as industrial water through the water up to standard after processing of pipeline 22.
Blower 3 by pipeline 16, pipeline 17, pipeline 18, pipeline 19 respectively with adjust water pot 1, catalytic oxidation reaction device
4, sustained response area 5, pH regulation area 6 are connected.
Softening reaction zone 7 is connected by pipeline 20 with sludge reflux pump 10, and sludge reflux pump 10 passes through pipeline 21 and precipitating
Disengagement zone 11 is connected.
PH online instrument table, liquidometer, automatic device of adding acid are installed in adjusting water pot 1；Catalytic oxidation reaction device 4 with
DC power supply 12 is connected；PH online instrument table, liquidometer, automatic device of adding acid are installed in pH regulation area 6；Softening reaction zone 7,
Coagulating area 8, flocculation reaction area 9 are separately installed with automatic medicine adding apparatus.Each in-line meter and the control of electromechanical equipment and PLC are
System is connected.
Further, the fixed cathode-anode plate in 4 two sides of catalytic oxidation reaction device, bottom setting aeration distribution grid, is urged
Change filler to be placed between the cathode-anode plate, current density is controlled in 0.5~6A/cm2。
In the electric field and the catalytic filler that oxygen, the cathode-anode plate that the bottom aerator provides generate
Synergistic effect under, great amount of hydroxy group free radical is generated in system, so that remaining pollutant in sewage is carried out oxygenolysis, and will
Calcium ions and magnesium ions are released from the state that contaminated object wraps up, and are come into full contact with convenient for subsequent calcium ions and magnesium ions and softening medicament.
Further, the residence time in the sustained response area 5 is 0.5~2h, can increase the stop of catalytic oxidation process
Time promotes the further decomposition of pollutant.
Further, the softening reaction zone 7 is equipped with automatic medicine adding apparatus and blender, adds mixing softening medicament,
The mixing softening medicament is sodium carbonate, sodium sulphate, and control proportion is 1:1-1:3.
Further, the coagulating area 8, flocculation reaction area 9 are equipped with automatic medicine adding apparatus and blender, respectively with
PAC, PAM are coagulant and flocculant.
Further, the depositing separation area includes sloping plate deposition district, sludge bucket.The water inlet of the depositing separation area is set
It is equipped with deflector, deflector lowest part will be lower than sloping plate deposition district, guarantee that sewage passes through sloping plate deposition district from bottom to up；It is described heavy
The water outlet of shallow lake Disengagement zone is provided with effluent weir, prevents body refuse from overflowing；The sludge bucket angle may be configured as 60 °.
Case study on implementation 1
Using Sichuan block oil gas field brine waste as research object, oil gas field brine waste wastewater influent CODcr is
400~1000mg/L, water inlet calcium and magnesium hardness are 2000~7000mg/L, and water inlet B/C is 0.05~0.1, and biodegradability is poor.
The waste water using " catalysis oxidation+softening " coupling processing technique, postrun the productions water CODcr of system for 150~
400mg/L, water outlet calcium and magnesium hardness are 100~400mg/L, and water outlet B/C is 0.25~0.5.The biodegradability being discharged at this time is high, into
One step can reach GB8978-1996 integrated wastewater discharge standard first discharge standard by biochemical treatment and advanced treating.
Claims (10)
1. a kind of oil gas field brine waste efficiently catalyzing and oxidizing couples hard-removal system, it is characterised in that: including sequentially connected tune
Water-saving tank, delivery pump and integrated reacting device, the integrated reacting device include that the catalysis oxidation that is successively linked in sequence is anti-
Answer device, sustained response area, pH regulation area, softening reaction zone, coagulating area, flocculation reaction area and depositing separation area；It is described
Water pot, catalytic oxidation reaction device, sustained response area and pH regulation area is adjusted to be connected with blower；The softening reaction zone and heavy
Shallow lake Disengagement zone is connected with sludge reflux pump；The catalytic oxidation reaction device is connected with DC power supply, is adjusting water pot and pH
PH online instrument table, liquidometer, automatic device of adding acid are mounted in regulatory region；It is anti-in softening reaction zone, coagulating area, flocculation
Area is answered to be separately installed with automatic medicine adding apparatus；The PH online instrument table, liquidometer, automatic device of adding acid and automatic medicine adding apparatus are equal
It is connected with PLC control system.
2. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 1 couples hard-removal system, feature exists
In: the fixed cathode-anode plate in the catalytic oxidation reaction device two sides, bottom setting aeration distribution grid, catalytic filler is placed in described
Between cathode-anode plate.
3. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 1 couples hard-removal system, feature exists
In: blender is installed in softening reaction zone.
4. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 1 couples hard-removal system, feature exists
In: blender is installed in coagulating area.
5. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 1 couples hard-removal system, feature exists
In: blender is installed in flocculation reaction area.
6. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 1 couples hard-removal system, feature exists
In: the depositing separation area includes sloping plate deposition district and sludge bucket, and the water inlet in depositing separation area is provided with deflector, heavy
The water outlet of shallow lake Disengagement zone is provided with effluent weir.
7. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 6 couples hard-removal system, feature exists
In: the deflector lowest part is lower than sloping plate deposition district.
8. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 6 couples hard-removal system, feature exists
In: the sludge bucket angle is set as 60 °.
9. a kind of oil gas field brine waste efficiently catalyzing and oxidizing couples hardness removing process, characterized by the following steps:
(1) in the catalytic oxidation reaction device, the current density between cathode-anode plate is controlled in 0.5~6A/cm2, in bottom
Under the synergistic effect of oxygen, the electric field that cathode-anode plate generates and catalytic filler that aerator provides, generated in system a large amount of
Hydroxyl radical free radical carries out oxygenolysis to pollutant, calcium ions and magnesium ions is released from the state that contaminated object wraps up；
(2) residence time of the sewage in the sustained response area is 0.5~2h, to decompose pollutant further；
(3) automatic medicine adding apparatus of the softening reaction zone is for adding mixing softening medicament, the calcium for releasing (1) step
Magnesium ion comes into full contact with softening medicament；
(4) the automatic medicine adding apparatus difference dosing coagulant and flocculant in the coagulating area, flocculation reaction area.
10. a kind of oil gas field brine waste efficiently catalyzing and oxidizing according to claim 9 couples hardness removing process, feature exists
In: the mixing softening medicament is sodium carbonate and sodium sulphate, and control proportion is 1:1-1:3.
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| CN201910046829.8A CN109851140A (en) | 2019-01-18 | 2019-01-18 | A kind of oil gas field brine waste efficiently catalyzing and oxidizing coupling hard-removal system and technique |
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| CN201910046829.8A CN109851140A (en) | 2019-01-18 | 2019-01-18 | A kind of oil gas field brine waste efficiently catalyzing and oxidizing coupling hard-removal system and technique |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08192192A (en) * | 1995-01-12 | 1996-07-30 | Kansai Electric Power Co Inc:The | Method for treating flue gas desulfurization drain |
| CN105540918A (en) * | 2015-12-15 | 2016-05-04 | 安东环保技术有限公司 | Treatment method of fracturing flow-back fluid |
| CN106746131A (en) * | 2017-01-23 | 2017-05-31 | 上海中耀环保实业有限公司 | A kind of organic wastewater reverse osmosis concentrated water oxidation and desalination process and system |
| CN109205895A (en) * | 2017-06-29 | 2019-01-15 | 北京朗新明环保科技有限公司 | A kind of high-salt wastewater treatment process system and method |
-
2019
- 2019-01-18 CN CN201910046829.8A patent/CN109851140A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08192192A (en) * | 1995-01-12 | 1996-07-30 | Kansai Electric Power Co Inc:The | Method for treating flue gas desulfurization drain |
| CN105540918A (en) * | 2015-12-15 | 2016-05-04 | 安东环保技术有限公司 | Treatment method of fracturing flow-back fluid |
| CN106746131A (en) * | 2017-01-23 | 2017-05-31 | 上海中耀环保实业有限公司 | A kind of organic wastewater reverse osmosis concentrated water oxidation and desalination process and system |
| CN109205895A (en) * | 2017-06-29 | 2019-01-15 | 北京朗新明环保科技有限公司 | A kind of high-salt wastewater treatment process system and method |
Non-Patent Citations (2)
| Title |
|---|
| 曾郴林等: "《微电解法处理难降解有机废水的理论与实例分析》", 31 October 2017, 中国环境出版社 * |
| 王立章等: "《填充床电极反应器水处理理论基础》", 30 November 2013, 中国矿业大学出版社 * |
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Application publication date: 20190607 |