CN107473453A - A kind of novel pure hydrostatic pipeline reactor - Google Patents
A kind of novel pure hydrostatic pipeline reactor Download PDFInfo
- Publication number
- CN107473453A CN107473453A CN201710915151.3A CN201710915151A CN107473453A CN 107473453 A CN107473453 A CN 107473453A CN 201710915151 A CN201710915151 A CN 201710915151A CN 107473453 A CN107473453 A CN 107473453A
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- CN
- China
- Prior art keywords
- pipeline
- group
- pipe
- ring flange
- conduction pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of novel pure hydrostatic pipeline reactor, its composition includes：First group of pipeline, second group of pipeline, 3rd group of pipeline and horizontal conduction pipe, guard is fixedly mounted in first group of pipeline front end, first group of pipe end is first by ring flange connecting bending, the other end of elbow one connects second group of pipeline front end by ring flange, second group of pipe end passes through ring flange connecting bend two, the other end of elbow two connects the 3rd group of pipeline front end by ring flange, 3rd group of pipe end connects straight pipe by ring flange, the straight pipe other end connects horizontal conduction pipe by ring flange, blind envelope is fixedly mounted in horizontal conduction pipe both ends, three elevator pumps are fixedly mounted above horizontal conduction pipe.The water inlet end of the reactor sets protection net, to avoid causing equipment to block in large volume foreign body from entering, it is ensured that medicament chemical feeding quantity precisely, medicament mixing it is abundant, be more beneficial for that class Fenton's reaction is quick, thoroughly carries out.
Description
Technical field
The present invention relates to technical field of industrial sewage treatment, specially a kind of novel pure hydrostatic pipeline reactor.
Background technology
At present, some enterprises use traditional Fenton technology advanced treatment of dyeing wastewater, have certain treatment effect, still
Traditional Fenton technology has the following disadvantages：First, dosing is big, sludge yield is big, and processing cost is high；Second, reaction efficiency is low,
Reaction time is grown, and generally requires more than 30 minutes；Third, traditional Fenton technology floor space is big（Reaction tank, sedimentation basin etc.）, soil
It is larger to build investment；Fourth, traditional Fenton technology sedimentation basin easily floats mud, it is primarily due to caused by hydrogen peroxide adding of agent excess.Separately
Outside, some enterprises use air-float technology advanced treatment of dyeing wastewater, are combined by adding traditional flocculant（PAC+PAM or PFS+
PAM）Mode remove water pollutant, but the technique has the following disadvantages：First, the clearance such as COD, colourity is relatively low,
Tend not to qualified discharge；Second, that water outlet is higher with mud, SS be present.In view of traditional Fenton technology and air-float technology are present
The problem of, a kind of new processing method of " class Fenton+air-float technology " has been invented by my company, for advanced treatment of dyeing wastewater,
Added amount of chemical can effectively be reduced（Avoid secondary pollution）, improve treatment effeciency, optimization processing technique；
In order to coordinate the class Fenton technology that can instantaneously complete reaction, a kind of efficient pure hydrostatic pipe reaction is devised
Device, its main function have：Firstth, realize that class Fenton medicament fixed point adds, modified ferrous sulfate, hydrogen peroxide and liquid caustic soda are added and existed
Complete in pipeline, its dosage can be precisely controlled, both can guarantee that modified sulphur acid is ferrous and hydrogen peroxide to add ratio stable（Press
According to the ratio needed for optimum reaction condition）, and can raising medicament utilization rate, reduce medicament and waste；Secondth, class Fenton's reaction is realized
Time is precisely controlled, and the distance between toss area of modified ferrous sulfate, hydrogen peroxide and liquid caustic soda is according to reaction time length
Set, the distance between adding of agent point is calculated by dyeing waste water flow velocity and class Fenton's reaction required time, it is determined that respectively adding
Snack made with traditional Chinese medicines position.After three needed for class Fenton's reaction kinds of adding of agent point positions are determined, you can it is determined that whole pipeline reactor
Length, this pipeline reactor is in application process, it can be ensured that the reaction time is basicly stable, then is equipped with stable medicament and throws
Add, you can ensure the COD clearances of stability and high efficiency.
The content of the invention
It is an object of the invention to provide a kind of novel pure hydrostatic pipeline reactor, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides following technical scheme：A kind of novel pure hydrostatic pipeline reactor, its
Composition includes：First group of pipeline, second group of pipeline, the 3rd group of pipeline and horizontal conduction pipe, described first group of pipeline front end
Guard is fixedly mounted, described first group of pipe end is first by ring flange connecting bending, and the described other end of elbow one passes through
Ring flange connects second group of pipeline front end, and described second group of pipe end passes through ring flange connecting bend two, described elbow
Two other ends connect the 3rd group of pipeline front end by ring flange, and the described the 3rd group of pipe end is connected straight-through by ring flange
Pipe, the described straight pipe other end connect horizontal conduction pipe by ring flange, and peace is fixed at described horizontal conduction pipe both ends
Blind envelope is filled, three elevator pumps are fixedly mounted above described horizontal conduction pipe.
Preferably, described novel pure hydrostatic pipeline reactor, described first group of pipeline and second group of pipeline are by A
Type pipeline and Type B pipeline composition, the described the 3rd group of pipeline are made up of A type pipelines, are installed with described A type pipelines inverse
Hour hands guide vane, guide vane clockwise is installed with described Type B pipeline, described A types pipeline and Type B pipeline are equal
For static pipeline mixer, it is built in GRP pipe.
Preferably, described novel pure hydrostatic pipeline reactor, two are fixedly mounted on described first group of pipeline
Dosing mouth, a dosing mouth is fixedly mounted on the described the 3rd group of pipeline.
Preferably, described novel pure hydrostatic pipeline reactor, described first group of pipeline, second group of pipeline,
Three groups of pipelines and horizontal conduction pipe use glass steel material.
Compared with prior art, the beneficial effects of the invention are as follows：The novel pure hydrostatic pipeline reactor water inlet end is set
Protection net is put, to avoid causing equipment to block in large volume foreign body from entering, novel pure hydrostatic pipeline reactor one
As apply in the sump or absorbing well, absorption well for the treatment of of dyeing wastewater bio-chemical effluent, it is ensured that medicament chemical feeding quantity precisely, medicament
Mixing is abundant, is more beneficial for that class Fenton's reaction is quick, thoroughly carries out, and its COD clearance be far above traditional Fenton's reaction, reality
Existing class Fenton medicament efficiently, sufficiently mixes, two kinds of pipe-line mixers of A, B, class Fenton built in pure hydrostatic pipeline reactor
After medicament enters pipeline, in the presence of pipe-line mixer, quick realize is sufficiently mixed, fully contacted, quick anti-so as to realize
Should, class Fenton's reaction efficiency is greatly improved, increases its disposal ability.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is A types piping schematic of the present invention.
Fig. 3 is Type B piping schematic of the present invention.
In figure：1st, first group of pipeline, 2, one, 3, second group of pipeline of elbow, 4, elbow two, 5, the 3rd group of pipeline, 6, dosing
Mouthful, 7, guard, 8, horizontal conduction pipe, 9, elevator pump, 10, blind envelope, 11, straight pipe.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme：
Embodiment 1：
A kind of novel pure hydrostatic pipeline reactor, its composition include：First group of pipeline, 1, second group of pipeline 3, the 3rd group of pipe
Guard 7 is fixedly mounted in road 5 and horizontal conduction pipe 8, described first group of front end of pipeline 1, and described first group of end of pipeline 1 leads to
Cross ring flange connecting bending first 2, the described other end of elbow 1 connects second group of front end of pipeline 3 by ring flange, and described the
Two groups of ends of pipeline 3 connect the 3rd group of pipe by ring flange connecting bend 24, the described other end of elbow 24 by ring flange
The front end of road 5, the described the 3rd group of end of pipeline 5 connect straight pipe 11 by ring flange, and the described other end of straight pipe 11 passes through
Ring flange connects horizontal conduction pipe 8, and blind envelope 10, described horizontal water conservancy diversion is fixedly mounted in the described both ends of horizontal conduction pipe 8
Three elevator pumps 9 are fixedly mounted in the top of pipeline 8.
Embodiment 2：
Novel pure hydrostatic pipeline reactor according to embodiment 1, described novel pure hydrostatic pipeline reactor,
Described first group of pipeline and second group of pipeline is made up of A types pipeline and Type B pipeline, and the described the 3rd group of pipeline is by A type pipelines
Form, guide vane counterclockwise is installed with described A type pipelines, be installed with described Type B pipeline clockwise
Guide vane, described A types pipeline and Type B pipeline are static pipeline mixer, are built in GRP pipe.
Embodiment 3：
Novel pure hydrostatic pipeline reactor according to embodiment 1 or 2, two are fixedly mounted on described first group of pipeline
Individual dosing mouth, a dosing mouth is fixedly mounted on the described the 3rd group of pipeline.
Embodiment 4：
Described novel pure hydrostatic pipeline reactor according to embodiment 1 or 2 or 3, described first group of pipeline,
Two groups of pipelines, the 3rd group of pipeline and horizontal conduction pipe use glass steel material.
Embodiment 5：
Novel pure hydrostatic pipeline reactor according to embodiment 1, new technology uses class Fenton's reaction principle, new
1# medicaments are firstly added in pure hydrostatic pipeline reactor and are modified ferrous sulfate, then add 2# medicament hydrogen peroxide, are created
PH3-4 reaction condition, modified ferrous sulfate quick catalysis hydrogen peroxide produce great amount of hydroxy group free radical, will largely had in sewage
Machine thing oxidation Decomposition, then adjust back pH to more than 6 by adding 3# medicaments liquid caustic soda again.Great quantity of floc is produced in sewage, by adding
Enter PAM, promote flco further to flocculate and unite, and again by way of adding air supporting auxiliary agent, allow the floc sedimentation to be formed in air floatation machine
Interior floating upward quickly.Compared with traditional Fenton technology, new technology has following features：（1）Reaction time is short, is being about 16 meters of pipe
Homogeneous efficiently catalyzing and oxidizing reaction can be completed within ten seconds or so in road reactor（Traditional Fenton's reaction at least needs 30 minutes）；
（2）First three medicament is completed to add all in pipeline reactor, it is possible to achieve precisely adds, and good mixing effect；（3）1# medicaments
Modified ferrous sulfate, can both reduce pH（Create optimum reaction condition）, and can play catalysis hydrogen peroxide the effect of；（4）Air supporting
Auxiliary agent can greatly lift existing pneumatically supported molten gas effect, increase floc sedimentation tension force, accelerate the floating of microbubble, realize that muddy water is more preferable
Separation；
Dyeing waste water enters in new class Fenton pipeline reactor, adds 1# medicaments successively（Modified ferrous sulfate）, 2# medicaments（It is double
Oxygen water）With 3# medicaments（Liquid caustic soda）, after class Fenton's reaction quickly occurs, mixed liquor is delivered to air floatation machine by elevator pump.5# medicaments（Gas
Floating auxiliary agent）Air floatation machine is added through release by dissolving import, finally adds 4# in air floatation machine water inlet（PAM）, pass through air supporting
Machine completes mud-water separation, so as to realize the dirty water decontamination handles；
Toss area specifically sets and is shown in Table：
| Medicament | Add position | Add concentration | Drug concentration |
| 1# is modified ferrous sulfate | Pipe-line mixer entrance, about 13 meters away from pump | 2500-3200 ppm | About 30% |
| 2# hydrogen peroxide | About 11 meters away from elevator pump | 250-300ppm | 35% |
| 3# liquid caustic soda | About 1 meter away from elevator pump | 500-650 ppm | 30% |
| 4#PAM | Air floatation machine water-locator import | 4 ppm | 1‰ |
| 5# air supporting auxiliary agents | Air floatation machine dissolving import | 4 ppm | 2‰ |
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, it is possible to understand that
These embodiments can be carried out with a variety of changes, modification without departing from the principles and spirit of the present invention, replace and become
Type, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of novel pure hydrostatic pipeline reactor, its composition includes：First group of pipeline（1）, second group of pipeline（3）,
Three groups of pipelines（5）With horizontal conduction pipe（8）, it is characterized in that：First group of described pipeline（1）Guard is fixedly mounted in front end（7）,
First group of described pipeline（1）End is first by ring flange connecting bending（2）, described elbow one（2）The other end passes through flange
Disk connects second group of pipeline（3）Front end, described second group of pipeline（3）End passes through ring flange connecting bend two（4）, it is described
Elbow two（4）The other end connects the 3rd group of pipeline by ring flange（5）Front end, the described the 3rd group of pipeline（5）End passes through method
Blue disk connects straight pipe（11）, described straight pipe（11）The other end connects horizontal conduction pipe by ring flange（8）, it is described
Horizontal conduction pipe（8）Blind envelope is fixedly mounted in both ends（10）, described horizontal conduction pipe（8）Three liftings are fixedly mounted in top
Pump（9）.
2. novel pure hydrostatic pipeline reactor according to claim 1, it is characterized in that：First group of described pipeline
（1）With second group of pipeline（2）It is made up of A types pipeline and Type B pipeline, the described the 3rd group of pipeline（5）It is made up of A type pipelines, institute
Guide vane counterclockwise is installed with the A type pipelines stated, water conservancy diversion leaf clockwise is installed with described Type B pipeline
Piece, described A types pipeline and Type B pipeline are static pipeline mixer, are built in GRP pipe.
3. novel pure hydrostatic pipeline reactor according to claim 1, it is characterized in that：First group of described pipeline
（1）Two dosing mouths of upper fixed installation（6）, described the 3rd group of pipeline（5）One dosing mouth of upper fixed installation（6）.
4. novel pure hydrostatic pipeline reactor according to claim 1, it is characterized in that：First group of described pipeline
（1）, second group of pipeline（3）, the 3rd group of pipeline（5）Glass steel material is used with horizontal conduction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915151.3A CN107473453A (en) | 2017-09-30 | 2017-09-30 | A kind of novel pure hydrostatic pipeline reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710915151.3A CN107473453A (en) | 2017-09-30 | 2017-09-30 | A kind of novel pure hydrostatic pipeline reactor |
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| Publication Number | Publication Date |
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| CN107473453A true CN107473453A (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710915151.3A Pending CN107473453A (en) | 2017-09-30 | 2017-09-30 | A kind of novel pure hydrostatic pipeline reactor |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818061A (en) * | 2019-12-04 | 2020-02-21 | 绍兴水处理发展有限公司 | Fenton reactor |
| CN112479344A (en) * | 2020-11-11 | 2021-03-12 | 绍兴水处理发展有限公司 | Fenton reaction new process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1907880A (en) * | 2006-08-17 | 2007-02-07 | 北京博通海纳石油技术有限公司 | Pressure air-dissolving air-float system |
| CN101544418A (en) * | 2009-04-27 | 2009-09-30 | 浙江新丰环保科技有限公司 | Coagulation reactor for sewage treatment |
| CN101559999A (en) * | 2008-04-18 | 2009-10-21 | 山东中科润环保科技有限公司 | Continuous sewage treatment technology and equipment thereof |
| CN203329632U (en) * | 2013-06-14 | 2013-12-11 | 云南沃润特环境工程有限公司 | Longitudinal turbulence pipeline mixer |
| US20170120214A1 (en) * | 2015-10-29 | 2017-05-04 | Lg Chem, Ltd. | Mixer and reactor including the same |
| CN206156946U (en) * | 2016-11-14 | 2017-05-10 | 英普（北京）环境科技有限公司 | Portable multi -functional water body purification device |
| CN107200389A (en) * | 2017-06-28 | 2017-09-26 | 复旦大学 | A kind of dyeing waste water advanced treating integral process of oxidization time in seconds |
| CN207483491U (en) * | 2017-09-30 | 2018-06-12 | 北京中晟清源环保科技有限公司 | A kind of novel pure hydrostatic pipeline reactor |
-
2017
- 2017-09-30 CN CN201710915151.3A patent/CN107473453A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1907880A (en) * | 2006-08-17 | 2007-02-07 | 北京博通海纳石油技术有限公司 | Pressure air-dissolving air-float system |
| CN101559999A (en) * | 2008-04-18 | 2009-10-21 | 山东中科润环保科技有限公司 | Continuous sewage treatment technology and equipment thereof |
| CN101544418A (en) * | 2009-04-27 | 2009-09-30 | 浙江新丰环保科技有限公司 | Coagulation reactor for sewage treatment |
| CN203329632U (en) * | 2013-06-14 | 2013-12-11 | 云南沃润特环境工程有限公司 | Longitudinal turbulence pipeline mixer |
| US20170120214A1 (en) * | 2015-10-29 | 2017-05-04 | Lg Chem, Ltd. | Mixer and reactor including the same |
| CN206156946U (en) * | 2016-11-14 | 2017-05-10 | 英普（北京）环境科技有限公司 | Portable multi -functional water body purification device |
| CN107200389A (en) * | 2017-06-28 | 2017-09-26 | 复旦大学 | A kind of dyeing waste water advanced treating integral process of oxidization time in seconds |
| CN207483491U (en) * | 2017-09-30 | 2018-06-12 | 北京中晟清源环保科技有限公司 | A kind of novel pure hydrostatic pipeline reactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818061A (en) * | 2019-12-04 | 2020-02-21 | 绍兴水处理发展有限公司 | Fenton reactor |
| CN112479344A (en) * | 2020-11-11 | 2021-03-12 | 绍兴水处理发展有限公司 | Fenton reaction new process |
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Application publication date: 20171215 |