CN105884006B - A kind of difficult biochemical organic wastewater pretreatment unit and technique - Google Patents
A kind of difficult biochemical organic wastewater pretreatment unit and technique Download PDFInfo
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- CN105884006B CN105884006B CN201610467351.2A CN201610467351A CN105884006B CN 105884006 B CN105884006 B CN 105884006B CN 201610467351 A CN201610467351 A CN 201610467351A CN 105884006 B CN105884006 B CN 105884006B
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- organic wastewater
- water
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- pretreatment unit
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Classifications
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
Abstract
The present invention relates to a kind of difficult biochemical organic wastewater pretreatment unit and techniques.Difficult biochemistry organic wastewater pretreatment unit includes water tank inlet 1, force (forcing) pump 12, water pipe 13, eddy flow accelerator 2, Hydrodynamic cavitation device 3, water tank 4.Water tank inlet 1 is equipped with dasher 11, water pipe 13 is equipped with force (forcing) pump 12, eddy flow accelerator 2 is made of water inlet 21, cylinder 22, centrum 23, water outlet 24, and Hydrodynamic cavitation device 3 is made of reducing pipe 31, trunnion 32, diffuser 33, and porous plate 321 is equipped with inside trunnion 32.Difficult biochemistry organic wastewater pretreating process process is: water tank inlet (difficult biochemistry organic wastewater) → force (forcing) pump (pressurization) → eddy flow accelerator (acceleration) → Hydrodynamic cavitation device (Cavitation) → tank (biochemical waste water).It is economic and practical the present invention provides a kind of simple process, improve the sewage pretreatment device and technique of difficult biochemical organic wastewater biodegradability energy.
Description
Technical field
The invention belongs to environmental protection technical fields, belong to field of waste water treatment more particularly to a kind of difficult biochemical organic wastewater
Pretreatment unit and technique.
Background technique
In the common work of the decaying of industrial enterprise and the continued emissions and surface water water body self-purification ability of resident living sewage
Under, China's surface water quality faces safely huge pressure and challenge, the raising of the content of organics in surface water, nutrition member
The accumulation of element and the reduction of water body self-purification ability lead to the aggravation of China's surface water water body eutrophication degree, even result in " water
The generation of magnificent phenomenon " seriously threatens earth's surface water security.Difficult biochemistry organic wastewater is one of difficult industrial wastewater, typical difficult
Biochemical organic wastewater has weaving/dyeing waste water, paper waste, pharmacy waste water, petrochemical wastewater, food wastewater, coking wastewater etc., this
A little waste water usually have the characteristics that high COD, low BOD, since its biodegradability is poor, generally requires and are mentioned by some preconditioning techniques
The ratio of high BOD and COD improves wastewater biodegradability energy, realizes the subsequent biochemical processing of waste water, reduces cost for wastewater treatment.
The preprocess method of biochemical organic wastewater difficult at present mainly has chemical method and physical method, and chemical method generally requires a large amount ofization
The consumption of reagent is learned, it is not only at high cost but also easily cause secondary pollution and the poison to microorganism during subsequent biological treatment
Evil, currently used physical method have extraction, absorption method, concentration method and supercritical ultrasonics technology, and extraction is easy because of organic solvent
It volatilizees and reveals and cause secondary pollution；And absorption method causes a large amount of consumption, the processing of adsorbent because of adsorbent reactivation difficulty
Higher cost；Concentration method is generally used for the processing of the difficult biochemical organic wastewater of high salt, and energy consumption is especially high, and a wide range of promote and apply is stranded
It is difficult；Supercritical ultrasonics technology has high treating effect, advantage without secondary pollution, but since its energy consumption is higher, is unsuitable for big yield
Processing.
Hydrodynamic Cavitation Technology is to make to form a large amount of bubbles in waste water by pipeline low-pressure area with high flow condition by waste water,
When waste water enters low speed heavy pressure area by high velocity, low pressure area, the bubble moment in waste water collapses and bursts, and forms bubble and bursts
It goes out, and then generates TRANSIENT HIGH TEMPERATURE, the extreme condition of high pressure and strong shock wave in regional area, realize point of useless Organic substance in water
Solution removal.
In view of the deficiency in current difficult biochemical organic wastewater preconditioning technique, exploitation pretreating effect is good, easy to use, makes
The biochemical organic wastewater pretreatment unit of the cheap hardly possible of valence, operation waste water is current difficult biochemical organic wastewater pretreatment urgent need to resolve
One of problem.
Summary of the invention
The object of the invention is that providing a kind of difficult biochemical organic wastewater pretreatment unit to solve the above-mentioned problems
And technique.
The present invention through the following technical solutions to achieve the above objectives: the present invention by water tank inlet, force (forcing) pump, water pipe, rotation
Flow accelerator, Hydrodynamic cavitation device, water tank composition.The water tank inlet is equipped with dasher, has for storing difficult biochemistry
Machine waste water realizes the mixing and storage of difficult biochemical organic wastewater, and water tank inlet is through the water pipe and the eddy flow accelerator
It is connected, the water pipe is equipped with the force (forcing) pump, the eddy flow accelerator bottom opening and the Hydrodynamic cavitation
Device is connected, and the Hydrodynamic cavitation device end is connected to the water tank.The eddy flow accelerator by water inlet, cylinder,
Cone, water outlet composition.The water outlet is connected with the Hydrodynamic cavitation device, and the Hydrodynamic cavitation device is by tapered
Pipe, trunnion, diffuser composition, the tapered pipe end are equipped with pressure vacuum gauge, are equipped with porous plate, institute inside the trunnion
The trunnion end stated is connected with diffuser, and the flaring pipe end is equipped with pressure gauge and is connected with the water tank.
The difficult biochemistry pretreated process of organic wastewater includes the following steps:
1) difficult biochemical organic wastewater is collected in water tank inlet, is uniformly mixed under paddle stirrer stirring.
2) mixed uniformly waste water is by entering eddy flow accelerator water inlet after water pipe pressurized pump pressurization, eddy flow accelerator into
The mouth of a river is scroll casing type water inlet, and water inlet direction is the tangential direction of cylinder, after difficult biochemistry organic wastewater enters cylinder, along cylinder
Wall makes rotating motion from top to bottom, and difficult biochemical organic wastewater continues to be rotated down fortune along cone inner wall after reaching cylinder body bottom
Dynamic, the speed of difficult biochemistry organic wastewater gradually increases in motion process, reaches maximum after reaching cone base.
3) the biochemical organic wastewater of the hardly possible of rotary motion to cone base enters Hydrodynamic cavitation device gradually through the water outlet of bottom
The draw, with the reduction of reducing pipe caliber, the flow velocity of difficult biochemistry organic wastewater is further increased, and is reached most when reaching trunnion
Greatly.
4) the biochemical organic wastewater of the hardly possible entered in trunnion passes through the porous plate being set in trunnion, and formation is mixed with a large amount of cavitation gas
The high speed of bubble, low pressure water flow.
5) after high speed, low pressure water flow enter diffuser along trunnion, since caliber is stepped up, the stream of difficult biochemistry organic wastewater
Speed gradually reduces, and cavitation bubble is crumbled and fall at this time, and the COD in difficult biochemistry organic wastewater is degraded.
6) waste water after COD initial breakdown enters water tank.
Detailed description of the invention
Attached drawing 1 is processing technological flow schematic diagram of the invention.
Attached drawing 2 is eddy flow accelerator front view schematic diagram of the invention.
Attached drawing 3 is Hydrodynamic cavitation device front view schematic diagram of the present invention.
Attached drawing 4 is porous plate left view schematic diagram of the present invention.
Attached drawing 5 is present invention processing chemical production wastewater effect picture.
Attached drawing 6 is present invention processing paper waste effect picture.
Attached drawing 7 is present invention processing dyeing waste water effect picture.
Specific embodiment
1~attached drawing 4 and specific embodiment are described below the present invention with reference to the accompanying drawing.
As shown in 1~attached drawing of attached drawing 4, the present invention includes water tank inlet (1), force (forcing) pump (12), water pipe (13), eddy flow acceleration
Device (2), Hydrodynamic cavitation device (3), water tank (4).Wherein, water tank inlet (1) centre is fixedly installed with paddle stirrer
(11)；Eddy flow accelerator (2) is made of water inlet (21), cylinder (22), cone (23) and water outlet (24), between each position with
Flange is sequentially tightly connected；Water tank inlet (1) is connect by water pipe (13) with water inlet (21) with flange seal；On water pipe (13)
Force (forcing) pump (12) and valve (14) are installed, connected between each component with flange seal；Hydrodynamic cavitation device (3) is by reducing pipe
(31), trunnion (32) and diffuser (33) form, and are sequentially tightly connected with flange between each position；Water outlet (24) and reducing pipe
(31) it is connected with flange seal；Reducing pipe (31) end is equipped with pressure vacuum gauge (311), and trunnion (32) end is equipped with porous plate
(321), micropore (3211) are evenly distributed on porous plate (321)；Diffuser (33) end is equipped with pressure gauge (331), diffuser
(33) it is connect with water tank (4) with flange seal.
Illustrate the process flow implemented below: the technique of the difficult biochemical organic wastewater of pretreatment is that (difficult biochemistry has water tank inlet
Machine waste water) → force (forcing) pump (pressurization) → eddy flow accelerator (acceleration) → Hydrodynamic cavitation device (Cavitation) → tank is (biochemical
Waste water).
In water tank inlet (1) after paddle stirrer (11) is stirred, pressurized pump (12) adds difficult biochemistry organic wastewater
Cone (23) are moved downwardly to along cylinder inboard wall rotation after water pipe (13) enter water inlet (21) after pressure, it is preliminary through cone (23)
Higher flow velocity is obtained after acceleration, then the water outlet (24) through cone (23) bottom enters reducing pipe (31), through reducing pipe (31)
Enter trunnion (32) after further speeding up, the micropore (3211) on the porous plate (321) through being set to trunnion (32) end is further
Accelerate, biochemical organic wastewater speed difficult at this time is maximum, and pressure becomes smaller, and generates a large amount of bubbles, has cavitation conditions, and difficult biochemistry has
Machine waste water enters in diffuser (33) therewith after passing through micropore (3211), and the flow velocity moment of difficult biochemistry organic wastewater reduces, pressure
Become larger, a large amount of bubbles concentration in difficult biochemistry organic wastewater crumbles and fall, and the organic matter in waste water is decomposed, and realizes difficult biochemical
The pretreatment of organic wastewater, treated waste water enter water tank (4) by diffuser (33)；In difficult biochemical treatment of Organic Wastewater mistake
Cheng Zhong controls the pretreating effect of difficult biochemical organic wastewater by valve (14), pressure vacuum gauge (311) and pressure gauge (331).
The water inlet (21) is volute type structure, and waste water is made to enter cylinder (22) along a tangential direction.
The diameter of the water inlet (21) is identical as the diameter of water outlet (24), the diameter of cylinder (22) with into
The diameter at the mouth of a river (21) and the diameter ratio of water outlet (24) are between 4 ~ 5.
Cylinder (22) the ratio between the diameter and its height is in 1:1 or so, the cone (23) and the cylinder
(22) height ratio is between 2 ~ 4.
The inlet diameter of the reducing pipe (31) and the diameter ratio of trunnion (32) are between 0.4 ~ 0.6.
The cone angle of the reducing pipe (31) is 20 ° ~ 25 °.
The diameter and length ratio of the trunnion (32) are between 0.3 ~ 0.5.
The outlet diameter of the diffuser (33) and the diameter ratio of trunnion (32) are between 2 ~ 2.5.
The cone angle of the diffuser (33) is 7 ° ~ 10 °.
The aperture of the micropore (3211) is 0.8 ~ 1.5mm.
A kind of embodiment 1: the effect of difficult biochemical organic wastewater pretreatment unit and process chemical production wastewater
Chemical production wastewater is derived from Hanzhong City small chemical factory, and the initial COD of waste water is 5430mg/L, BOD 780mg/
L.Barrel diameter is 300mm, and cone height 1200mm, the inlet diameter of reducing pipe is 70mm, and the diameter of trunnion is 40mm, trunnion
Length 80mm, the outlet diameter of diffuser are 200mm, and porous plate is with a thickness of 5mm, opening diameter 1mm, percent opening 0.05 ~
0.09, the pressure of pressure vacuum gauge is controlled by valve, when pressure vacuum gauge is in 0.1 ~ 0.25MPa, collection diffuser is exported
The waste water at place carries out the detection of COD, BOD, and between 0.42 ~ 0.50, waste water can be given birth to by treated chemical production wastewater BOD/COD
The property changed is greatly improved, and has good biodegradability energy, and pretreating effect is obvious.
A kind of embodiment 2: the effect of difficult biochemical organic wastewater pretreatment unit and process paper waste
Paper waste is derived from Shan Nan large-scale paper product manufacturing enterprise, and the initial COD of waste water is 3580mg/L, BOD 295mg/
L.Barrel diameter is 300mm, and cone height 1200mm, the inlet diameter of reducing pipe is 70mm, and the diameter of trunnion is 40mm, trunnion
Length 80mm, the outlet diameter of diffuser are 200mm, and porous plate is with a thickness of 5mm, opening diameter 1mm, percent opening 0.05 ~
0.09, the pressure of pressure vacuum gauge is controlled by valve, when pressure vacuum gauge is in 0.22 ~ 0.32MPa, collection diffuser is exported
The waste water at place carries out the detection of COD, BOD, and between 0.40 ~ 0.47, waste water can be given birth to by treated chemical production wastewater BOD/COD
The property changed is greatly improved, and has good biodegradability energy, and pretreating effect is obvious.
A kind of embodiment 3: the effect of difficult biochemical organic wastewater pretreatment unit and process stimulated dye wastewater
Stimulated dye wastewater is prepared by crystal violet, and the initial COD of waste water is 3100mg/L, BOD 220mg/L.Barrel diameter
For 300mm, cone height 1200mm, the inlet diameter of reducing pipe is 70mm, and the diameter of trunnion is 40mm, length of throat 80mm,
The outlet diameter of diffuser is 200mm, and porous plate passes through with a thickness of 5mm, opening diameter 1mm, percent opening 0.05 ~ 0.09
Valve controls the pressure of pressure vacuum gauge, when pressure vacuum gauge is in 0.1 ~ 0.25MPa, collect the waste water in diffuser exit into
The detection of row COD, BOD, between 0.36 ~ 0.53, wastewater biodegradability obtains pole by treated chemical production wastewater BOD/COD
Big raising, has good biodegradability energy, and pretreating effect is obvious.
Claims (9)
1. a kind of difficult biochemical organic wastewater pretreatment unit, including water tank inlet (1), force (forcing) pump (12), water pipe (13), eddy flow add
Fast device (2), Hydrodynamic cavitation device (3), water tank (4)；Wherein, water tank inlet (1) centre is fixedly installed with paddle stirrer
(11)；Eddy flow accelerator (2) is made of water inlet (21), cylinder (22), cone (23) and water outlet (24), between each position with
Flange is sequentially tightly connected；Water tank inlet (1) is connect by water pipe (13) with water inlet (21) with flange seal；On water pipe (13)
Force (forcing) pump (12) and valve (14) are installed, connected between each component with flange seal；Hydrodynamic cavitation device (3) is by reducing pipe
(31), trunnion (32) and diffuser (33) form, and are sequentially tightly connected with flange between each position；Water outlet (24) and reducing pipe
(31) it is connected with flange seal；Reducing pipe (31) end is equipped with pressure vacuum gauge (311), and trunnion (32) end is equipped with porous plate
(321), micropore (3211) are evenly distributed on porous plate (321)；Diffuser (33) end is equipped with pressure gauge (331), diffuser
(33) it is connect with water tank (4) with flange seal.
2. a kind of difficult biochemical organic wastewater pretreatment unit according to claim 1, it is characterized in that: the water inlet
It (21) is volute type structure.
3. a kind of difficult biochemical organic wastewater pretreatment unit according to claim 1, it is characterized in that: the water outlet
(24) diameter is identical as the diameter of water inlet (21).
4. a kind of difficult biochemical organic wastewater pretreatment unit according to claim 1, it is characterized in that: the cylinder (22)
Diameter and the ratio between the height of cylinder (22) be 1:1, the diameter ratio of the diameter of the cylinder (22) and the water inlet (21)
Between 4 ~ 5.
5. a kind of difficult biochemical organic wastewater pretreatment unit according to claim 1, it is characterized in that: the cone (23)
Height and the cylinder (22) the ratio between height between 2 ~ 4.
6. a kind of difficult biochemical organic wastewater pretreatment unit according to claim 1, it is characterized in that: the reducing pipe
(31) cone angle is 20 ° ~ 25 °, and the diameter and length ratio of the trunnion (32) are between 0.3 ~ 0.5.
7. a kind of difficult biochemical organic wastewater pretreatment unit according to claim 1, it is characterized in that: the diffuser
(33) between 2 ~ 2.5, the cone angle of the diffuser (33) is the diameter ratio of outlet diameter and the trunnion (32)
7°~10°。
8. a kind of difficult biochemical organic wastewater pretreatment unit according to claim 1, it is characterized in that: the micropore
(3211) aperture is 0.8 ~ 1.5mm.
9. utilizing a kind of described in any item difficult biochemical difficult biochemical organic wastes of organic wastewater pretreatment unit progress of claim 1-8
The technique of water pretreatment, it is characterized in that: the pretreatment process of difficult biochemistry organic wastewater is that water tank inlet → force (forcing) pump → eddy flow adds
Fast device → Hydrodynamic cavitation device → water tank.
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| CN201610467351.2A CN105884006B (en) | 2016-06-24 | 2016-06-24 | A kind of difficult biochemical organic wastewater pretreatment unit and technique |
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| CN201610467351.2A CN105884006B (en) | 2016-06-24 | 2016-06-24 | A kind of difficult biochemical organic wastewater pretreatment unit and technique |
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| CN105884006A CN105884006A (en) | 2016-08-24 |
| CN105884006B true CN105884006B (en) | 2019-01-04 |
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| CN107162101B (en) * | 2017-07-14 | 2023-06-30 | 核工业理化工程研究院 | Large-flux hydrodynamic cavitation generator based on venturi tube and cavitation method |
| CN107561254B (en) * | 2017-08-09 | 2022-11-04 | 利多(香港)有限公司 | Blood cell analyzer |
| CN117531796A (en) * | 2017-08-09 | 2024-02-09 | 利多(香港)有限公司 | Isolation tank for sheath flow post-tank cleaning device, sheath flow post-tank cleaning device and blood cell analyzer |
| CN107677589A (en) * | 2017-08-09 | 2018-02-09 | 利多(香港)有限公司 | Isolation tank for sheath stream impedance counting device |
| CN107677590A (en) * | 2017-08-09 | 2018-02-09 | 利多(香港)有限公司 | Stream type cell analyzer |
| CN109550417A (en) * | 2017-09-25 | 2019-04-02 | 国家电投集团科学技术研究院有限公司 | Drop generating device |
| CN111794862B (en) * | 2020-07-15 | 2021-10-22 | 山东大学 | Deicing device and deicing method for air inlet lip of aircraft engine |
| CN113019722B (en) * | 2020-12-03 | 2022-12-06 | 中国舰船研究设计中心 | Multi-stage rotational flow cavitation system with self-cleaning function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102531146A (en) * | 2011-11-23 | 2012-07-04 | 深圳市宇力科技有限公司 | Device for degrading waste water organic matters by combined type hydraulic power cavitation |
| CN105439322A (en) * | 2015-12-04 | 2016-03-30 | 中北大学 | Wastewater treatment method and device based on hydrodynamic cavitation |
| CN105502626A (en) * | 2015-12-04 | 2016-04-20 | 中北大学 | Hydrodynamic cavitation reactor |
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2016
- 2016-06-24 CN CN201610467351.2A patent/CN105884006B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531146A (en) * | 2011-11-23 | 2012-07-04 | 深圳市宇力科技有限公司 | Device for degrading waste water organic matters by combined type hydraulic power cavitation |
| CN105439322A (en) * | 2015-12-04 | 2016-03-30 | 中北大学 | Wastewater treatment method and device based on hydrodynamic cavitation |
| CN105502626A (en) * | 2015-12-04 | 2016-04-20 | 中北大学 | Hydrodynamic cavitation reactor |
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