CN205258100U - Cellulose pretreatment of water device that gives up - Google Patents
Cellulose pretreatment of water device that gives up Download PDFInfo
- Publication number
- CN205258100U CN205258100U CN201521031587.9U CN201521031587U CN205258100U CN 205258100 U CN205258100 U CN 205258100U CN 201521031587 U CN201521031587 U CN 201521031587U CN 205258100 U CN205258100 U CN 205258100U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- reacting cylinder
- reaction tube
- sludge
- cellulose
- 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.)
- Expired - Fee Related
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to a cellulose pretreatment of water device that gives up, install including device body, processing system, overflow weir, outlet pipe, water inlet, advance sha kou, return sludge mouth, defeated sandpipe and mud reservoir. This device utilizes waste water to include the macromolecule long -chain characteristic of pollutant self, adopt reverse flocculation method, the medium of flocculent absorption bridging is regarded as with the pollutant, the power that subsides is regarded as to flocculation nuclear with the mud and throwing of backward flow adds, it forms great wadding grain to form flocculating reaction, adsorb the some SS in the waste water simultaneously, bacterium and dissolubility material, precipitate the regional aquatic separation of following, subside out, make cellulose molecule and the co -precipitation of flco intensive mixing in the waste water, thereby reduce the concentration of cellulose widely in the preliminary treatment of waste water treatment anterior segment, handle the load for carrying on to handle to have reduced, it is short to have dwell time, favorable treating effect, the reducing pollutants thing is loaded in a large number, construction investment and operation investment have been practiced thrift greatly in the processing in later stage.
Description
Technical field
The utility model belongs to Wastewater Pretreatment equipment technical field, especially a kind of cellulose sewage pretreatment device and application, the pretreatment that the cellulose discharging in this device suitable fibers element production process is produced waste water.
Background technology
At present, in world wide, not yet obtain compared with quantum jump in high salt cellulose field of waste water treatment.
Cellulose waste water is mainly derived from: the cooling recirculated water of cellulose synthesis phase in reactor; Distillation residual liquid while obtaining solid cellulose semi-finished product; The Separation of Solid and Liquid aqueous solution that centrifuge solids-liquid separation step produces.
1, the reactor stage of reaction, this operation has by the isolated cooling requirement of reacting kettle jacketing, and water is generally running water, and water quality is better, but because its temperature cannot reuse, directly discharged to sewage disposal system.
2, the rectifying still solvent recovery stage, waste water production process is distillation residual liquid discharge after solvent distillation reclaims. This stage COD is in 20g/L left and right, and main matter is: methyl alcohol 4.28%; Toluene 1.66%. In this operation waste water, contain 3.2% sodium chloride simultaneously.
3, centrifuge Separation of Solid and Liquid, cellulose semi-finished product are obtained the stage, are solid-liquid separation process, the aqueous solution that the waste water of generation is slurry. This section of water COD is in 10g/L left and right, and the main matter that produces COD is cellulose. In this operation waste water, contain 3.33% sodium chloride simultaneously.
Due to the characteristic of its high salt, high COD, low BC ratio, make biochemical treatment very difficult in actual applications. Meanwhile, the general scale of cellulose production enterprise is less, and input great amount of cost is carried out the techniques such as advanced oxidation, anaeration in normal temperature and in cost of investment, is difficult to allow enterprise accept. Meanwhile, the O&M peopleware of enterprise is also difficult to meet the Operational requirements of complicated technology.
Therefore put forth effort to develop high salt cellulose waste water treatment process device efficient, low energy consumption, meet industry demand and national environmental protection policy, there is good development prospect, not only can obtain good economic benefits, and can obtain the technology of larger social benefit.
By retrieval, find patent publication us as relevant to present patent application in next chapter:
Hydroxypropyl methylcellulose wastewater treatment and renovation device (CN203999281U), relates to a kind of hydroxypropyl methylcellulose wastewater treatment and renovation device, belongs to technical field of waste water processing. Described hydroxypropyl methylcellulose wastewater treatment and renovation device, wastewater equalization pond is connected successively with four-effect evaporator, comprehensive wastewater regulating reservoir, high efficiency anaerobic reactor, the first collecting-tank, anaerobism sedimentation basin, the second collecting-tank, CASS pond, tank, sandfiltration pot and ozone oxidation pond, four-effect evaporator is connected with workshop washing system with centrifuge respectively, and centrifuge is connected with salt outward transport system; High efficiency anaerobic reactor is connected with methane power generating system; Anaerobism sedimentation basin is all connected with sludge concentration tank with CASS pond, and sludge concentration tank is connected with dry mud outward transport system successively with barrier film plate and frame filter press; Tank is also connected with comprehensive wastewater regulating reservoir; Ozone oxidation pond is connected with ozone generator. The utility model has been realized the qualified discharge of hydroxypropyl methylcellulose waste water, has reduced efflux wastewater amount simultaneously, has reduced production cost, energy-conservation environmental protection again.
By contrast, there are the different of essence from above-mentioned patent publication us in present patent application.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, a kind of cellulose sewage pretreatment device is provided, this device utilizes waste water to include the large molecule long-chain characteristic of pollutant self, adopt reverse flucculation process, make the cellulosic molecule in waste water fully mix co-precipitation with flco, thereby in wastewater treatment leading portion pretreating process, reduce widely cellulosic concentration, process load for subsequent processes has reduced.
To achieve these goals, the technical scheme that the utility model adopts is as follows:
A kind of cellulose sewage pretreatment device, described device comprises device body, treatment system, downflow weir, outlet pipe, water inlet, sand inlet, sludge reflux mouth, sediment transport pipe and sludge storage pool;
Described device body comprises a reacting cylinder body, the set handling that is connected in this reacting cylinder body system, described treatment system comprises reaction tube, paddle, diffusing opening, blending dividing plate and deflector, described reaction tube and reacting cylinder body coaxially arrange, the setting that is connected with reacting cylinder body of the top of reaction tube, the top of described reaction tube arranges paddle, the bottom of described reaction tube coaxially arranges diffusing opening, this diffusing opening is cone tubular, the diameter at its top is identical with the base diameter of reaction tube, the diameter of diffusing opening bottom is greater than its top diameter, on reaction tube between described diffusing opening and paddle, vertically interval arranges a left side, right blending dividing plate arranged in a crossed manner, in the reacting cylinder body of described diffusing opening below, deflector is set, the bottom of the reacting cylinder body of this deflector below is shaped with sludge bucket, the bottom of this sludge bucket is shaped with mud mouth,
The top bilateral symmetry of the inwall of described reacting cylinder body is provided with downflow weir, and is connected and sets out water pipe in this downflow weir, and this outlet pipe passes reacting cylinder body and extends to reacting cylinder body outside;
Water inlet, sand inlet, sludge reflux mouth are set with being connected in the reaction tube of paddle top, described water inlet can be inputted cellulose waste water in reaction tube, described sand inlet can be inputted sand particles in reaction tube, and described sludge reflux mouth can be inputted mud in reaction tube.
And described paddle drives rotation by a mixer motor being arranged at outside reacting cylinder body.
And described water inlet is arranged on the side inwall of reaction tube, this water inlet is arranged at the output of a water inlet pipe, and the other end of this water inlet pipe passes reaction tube, reacting cylinder body extends to outside reacting cylinder body; Described sand inlet, sludge reflux mouth are arranged at intervals in the reacting cylinder body at reaction tube top, this sand inlet is arranged at the output of sediment transport pipe, the other end of this sediment transport pipe passes reacting cylinder body and extends to outside reacting cylinder body, described sludge reflux mouth is arranged at the output of a dredging tube, the other end of this dredging tube passes reacting cylinder body and extends to outside reacting cylinder body and the setting that is connected with sludge storage pool by sludge reflux pump, and this sludge storage pool is arranged at outside reacting cylinder body.
And described sand is particulate quartz sand, or it is the material that natural or artificial proportion is greater than mud.
And, described device also comprises a cyclone separator, the setting that is connected with mud mouth by pipeline of the middle and lower part of described cyclone separator, on top one sidewall of this cyclone separator, a sludge outlet pipe is set with being connected in cyclone separator, the other end of this sludge outlet pipe extends to outside cyclone separator, the setting that is connected with sediment transport pipe by pipeline of the bottom of this cyclone separator.
Application aspect the pretreatment of the cellulose production waste water that the plain sewage pretreatment device of dimension as above discharges in cellulose production process.
Advantage and good effect that the utility model is obtained are:
1, this pretreatment unit is provided with device body, treatment system, downflow weir, outlet pipe, water inlet, sand inlet, sludge reflux mouth, sediment transport pipe and sludge storage pool, this device utilizes waste water to include the large molecule long-chain characteristic of pollutant self, adopt reverse flucculation process, , medium using pollutant as the adsorption bridging of flocculation, power using the mud refluxing and the flocculation core that adds as sedimentation, form flocculation reaction and form larger wadding grain, adsorbing the part SS in waste water simultaneously, bacterium and dissolved matter, separate from water in precipitation zone, settle, make the cellulosic molecule in waste water fully mix co-precipitation with flco, thereby reduce greatly cellulosic concentration in wastewater treatment leading portion pretreating process, for having reduced, subsequent processes processes load, it is short that this device has the time of staying, treatment effect is good, can reduce in a large number pollutant burden, construction investment and operation investment in the processing in later stage, are greatly saved.
2, this device also comprises a cyclone separator, mud enters in cyclone separator, carry out eddy flow layering rapidly, the sand particles of large proportion is separated to skin under the effect of centrifugal force, prolong outer wall and be deposited into bottom, mud mixture enters delivery port through the reaction zone at middle part, enter the technological process of Treatment of Sludge, sand particles enters sand inlet again through collecting, reuse refluxes, in process, the sand particles of loss supplements through sand inlet, meet the reaction density of needs in reactor, reclaim by centrifugation, again in feeding device, react, reach the effect of cycling and reutilization, greatly save material, reduce use cost.
Brief description of the drawings
Fig. 1 is the structure connection diagram of this device.
Detailed description of the invention
As an example of accompanying drawing embodiment example, the utility model is described in further detail below, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
Mentioned reverse flucculation process in this patent, be different from tradition adds flocculant to produce flco and the method for sedimentation separation in waste water, the basis that its flco produces is the returned sludge in follow-up biochemical processing process, large molecule cellulose in waste water plays the effect of adsorption bridging, described reverse flucculation process, add flocculation core and increase flco proportion, increase the power of sedimentation. Because flco is that returned sludge proportion is less, the effect of settling of flco is not good, therefore adds flocculation core, strengthens the effect of gravitational settling; Described flocculation core, after flocculation mud discharging, reclaims by centrifugation, again in feeding device, reacts, and reaches the effect of cycling and reutilization, and it is particulate quartz sand that flocculation is endorsed, and can be also the material that natural or artificial various proportions are greater than mud; The utility model cellulose sewage pretreatment device, its auxiliary equipment can comprise follow-up biochemical treatment system, flocculation core centrifugal separation system, sludge treating system.
A kind of cellulose sewage pretreatment device, as shown in Figure 1, described device comprises device body, treatment system, downflow weir 9, outlet pipe 10, water inlet 6, sand inlet 4, sludge reflux mouth 7, sediment transport pipe 2 and sludge storage pool 12;
Described device body comprises a reacting cylinder body 8, the set handling that is connected in this reacting cylinder body system, described treatment system comprises reaction tube 17, paddle 20, diffusing opening 16, blending dividing plate and deflector 15, described reaction tube and reacting cylinder body coaxially arrange, the setting that is connected with reacting cylinder body of the top of reaction tube, the top of described reaction tube arranges paddle, this paddle can drive rotation by a mixer motor 5 being arranged at outside reacting cylinder body, the bottom of described reaction tube coaxially arranges diffusing opening, this diffusing opening is cone tubular, the diameter at its top is identical with the base diameter of reaction tube, the diameter of diffusing opening bottom is greater than its top diameter, on reaction tube between described diffusing opening and paddle, vertically interval arranges a left side, right blending dividing plate 19 arranged in a crossed manner, in the reacting cylinder body of described diffusing opening below, deflector is set, the bottom of the reacting cylinder body of this deflector below is shaped with sludge bucket 14, the bottom of this sludge bucket is shaped with mud mouth 13,
The top bilateral symmetry of the inwall of described reacting cylinder body is provided with downflow weir, and is connected and sets out water pipe in this downflow weir, and this outlet pipe passes reacting cylinder body and extends to reacting cylinder body outside;
Water inlet, sand inlet, sludge reflux mouth are set with being connected in the reaction tube of paddle top, described water inlet can be inputted cellulose waste water in reaction tube, described sand inlet can be inputted sand particles in reaction tube, and described sludge reflux mouth can be inputted mud in reaction tube; In the present embodiment, described water inlet is arranged on the side inwall of reaction tube, and this water inlet is arranged at the output of a water inlet pipe 18, and the other end of this water inlet pipe passes reaction tube, reacting cylinder body extends to outside reacting cylinder body; Described sand inlet, sludge reflux mouth are arranged at intervals in the reacting cylinder body at reaction tube top, this sand inlet is arranged at the output of sediment transport pipe, the other end 1 of this sediment transport pipe passes reacting cylinder body and extends to outside reacting cylinder body, described sludge reflux mouth is arranged at the output of a dredging tube (in figure not label), the other end of this dredging tube passes reacting cylinder body and extends to outside reacting cylinder body and the setting that is connected with sludge storage pool by sludge reflux pump 11, and this sludge storage pool is arranged at outside reacting cylinder body.
This pretreatment unit is provided with device body, treatment system, downflow weir, outlet pipe, water inlet, sand inlet, sludge reflux mouth, sediment transport pipe and sludge storage pool, this device utilizes waste water to include the large molecule long-chain characteristic of pollutant self, adopt reverse flucculation process, , medium using pollutant as the adsorption bridging of flocculation, power using the mud refluxing and the flocculation core that adds as sedimentation, form flocculation reaction and form larger wadding grain, adsorbing the part SS in waste water simultaneously, bacterium and dissolved matter, separate from water in precipitation zone, settle, make the cellulosic molecule in waste water fully mix co-precipitation with flco, thereby reduce greatly cellulosic concentration in wastewater treatment leading portion pretreating process, for having reduced, subsequent processes processes load.
In the present embodiment, described device also comprises a cyclone separator 22, the setting that is connected with mud mouth by pipeline of the middle and lower part of described cyclone separator, on top one sidewall of this cyclone separator, a sludge outlet pipe 21 is set with being connected in cyclone separator, the other end of this sludge outlet pipe extends to outside cyclone separator, the setting that is connected with sediment transport pipe by pipeline 3 of the bottom of this cyclone separator.
This device also comprises a cyclone separator, mud enters in cyclone separator, carry out eddy flow layering rapidly, the sand particles of large proportion is separated to skin under the effect of centrifugal force, prolong outer wall and be deposited into bottom, mud mixture enters delivery port through the reaction zone at middle part, enter the technological process of Treatment of Sludge, sand particles enters sand inlet again through collecting, the reuse that refluxes, in process, the sand particles of loss supplements through sand inlet, meets the reaction density of needs in reactor, greatly save material, reduced use cost.
The operation principle of this cellulose sewage pretreatment device is:
Pending cellulose waste water is in water inlet enters reaction tube, the large proportion sand particles entering with sand inlet, mud fully blending under the effect of mixer that sludge reflux mouth refluxes, mud flco fully mixes and contacts with the cellulose in waste water, adsorb into flco, carrying the sand particles of large proportion simultaneously secretly, the proportion of flco itself is increased. For preventing that fierce reaction from smashing established flco, after fully mixing, entering blending dividing plate, between blending dividing plate, collide absorption, fully react, form large flco; The waste water that is being mingled with large flco because the effect flow velocity of reducing slows down, contributes to flco cosedimentation at diffusing opening; Through the current stabilization of deflector, enter in reacting cylinder body, mud-water separation, in reacting cylinder body, clear water is up, and mud sinks, and clear water, after the abundant precipitation and separation of clear water zone, enters follow-up treatment system through downflow weir. Mud sinks to entering bucket, and in bucket, deposition forms sludge blanket. Sludge blanket runs up to certain thickness, opens mud discharging mouth and carries out spoil disposal.
This device also comprises a cyclone separator, mud enters in cyclone separator, carry out eddy flow layering rapidly, the sand particles of large proportion is separated to skin under the effect of centrifugal force, prolong outer wall and be deposited into bottom, mud mixture enters delivery port through the reaction zone at middle part, enter the technological process of Treatment of Sludge, sand particles enters sand inlet again through collecting, the reuse that refluxes, in process, the sand particles of loss supplements through sand inlet, meets the reaction density of needs in reactor, greatly save material, reduced use cost.
Claims (5)
1. a cellulose sewage pretreatment device, is characterized in that: described device comprises device body, treatment system, downflow weir, outlet pipe, water inlet, sand inlet, sludge reflux mouth, sediment transport pipe and sludge storage pool;
Described device body comprises a reacting cylinder body, the set handling that is connected in this reacting cylinder body system, described treatment system comprises reaction tube, paddle, diffusing opening, blending dividing plate and deflector, described reaction tube and reacting cylinder body coaxially arrange, the setting that is connected with reacting cylinder body of the top of reaction tube, the top of described reaction tube arranges paddle, the bottom of described reaction tube coaxially arranges diffusing opening, this diffusing opening is cone tubular, the diameter at its top is identical with the base diameter of reaction tube, the diameter of diffusing opening bottom is greater than its top diameter, on reaction tube between described diffusing opening and paddle, vertically interval arranges a left side, right blending dividing plate arranged in a crossed manner, in the reacting cylinder body of described diffusing opening below, deflector is set, the bottom of the reacting cylinder body of this deflector below is shaped with sludge bucket, the bottom of this sludge bucket is shaped with mud mouth,
The top bilateral symmetry of the inwall of described reacting cylinder body is provided with downflow weir, and is connected and sets out water pipe in this downflow weir, and this outlet pipe passes reacting cylinder body and extends to reacting cylinder body outside;
Water inlet, sand inlet, sludge reflux mouth are set with being connected in the reaction tube of paddle top, described water inlet can be inputted cellulose waste water in reaction tube, described sand inlet can be inputted sand particles in reaction tube, and described sludge reflux mouth can be inputted mud in reaction tube.
2. cellulose sewage pretreatment device according to claim 1, is characterized in that: described paddle drives rotation by a mixer motor being arranged at outside reacting cylinder body.
3. cellulose sewage pretreatment device according to claim 1, it is characterized in that: described water inlet is arranged on the side inwall of reaction tube, this water inlet is arranged at the output of a water inlet pipe, and the other end of this water inlet pipe passes reaction tube, reacting cylinder body extends to outside reacting cylinder body; Described sand inlet, sludge reflux mouth are arranged at intervals in the reacting cylinder body at reaction tube top, this sand inlet is arranged at the output of sediment transport pipe, the other end of this sediment transport pipe passes reacting cylinder body and extends to outside reacting cylinder body, described sludge reflux mouth is arranged at the output of a dredging tube, the other end of this dredging tube passes reacting cylinder body and extends to outside reacting cylinder body and the setting that is connected with sludge storage pool by sludge reflux pump, and this sludge storage pool is arranged at outside reacting cylinder body.
4. cellulose sewage pretreatment device according to claim 1, is characterized in that: described sand is particulate quartz sand, or is the material that natural or artificial proportion is greater than mud.
5. according to the cellulose sewage pretreatment device described in claim 1 to 4 any one, it is characterized in that: described device also comprises a cyclone separator, the setting that is connected with mud mouth by pipeline of the middle and lower part of described cyclone separator, on top one sidewall of this cyclone separator, a sludge outlet pipe is set with being connected in cyclone separator, the other end of this sludge outlet pipe extends to outside cyclone separator, the setting that is connected with sediment transport pipe by pipeline of the bottom of this cyclone separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031587.9U CN205258100U (en) | 2015-12-14 | 2015-12-14 | Cellulose pretreatment of water device that gives up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031587.9U CN205258100U (en) | 2015-12-14 | 2015-12-14 | Cellulose pretreatment of water device that gives up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205258100U true CN205258100U (en) | 2016-05-25 |
Family
ID=55999639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521031587.9U Expired - Fee Related CN205258100U (en) | 2015-12-14 | 2015-12-14 | Cellulose pretreatment of water device that gives up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205258100U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384230A (en) * | 2015-12-14 | 2016-03-09 | 河北航天环境工程有限公司 | Cellulose wastewater pretreatment apparatus and application thereof |
| CN108545814A (en) * | 2018-03-22 | 2018-09-18 | 苏州思纳环保科技有限公司 | A kind of precipitation reactor and its application method of heavy-metal ion removal |
| CN109970235A (en) * | 2019-03-15 | 2019-07-05 | 泰山医学院 | A kind of equipment for handling chemical engineering sewage |
| CN111732168A (en) * | 2020-07-07 | 2020-10-02 | 恩曼技术（北京）有限公司 | Heavy nuclear high-density sewage purification method and device thereof |
-
2015
- 2015-12-14 CN CN201521031587.9U patent/CN205258100U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384230A (en) * | 2015-12-14 | 2016-03-09 | 河北航天环境工程有限公司 | Cellulose wastewater pretreatment apparatus and application thereof |
| CN105384230B (en) * | 2015-12-14 | 2018-05-22 | 河北航天环境工程有限公司 | A kind of cellulose sewage pretreatment device and application |
| CN108545814A (en) * | 2018-03-22 | 2018-09-18 | 苏州思纳环保科技有限公司 | A kind of precipitation reactor and its application method of heavy-metal ion removal |
| CN109970235A (en) * | 2019-03-15 | 2019-07-05 | 泰山医学院 | A kind of equipment for handling chemical engineering sewage |
| CN111732168A (en) * | 2020-07-07 | 2020-10-02 | 恩曼技术（北京）有限公司 | Heavy nuclear high-density sewage purification method and device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201908018U (en) | Sewage treatment device | |
| CN105461147B (en) | A kind of Magneto separate water purification system and its purification method | |
| CN106630472A (en) | Printing and dyeing waste water treatment process | |
| CN205258100U (en) | Cellulose pretreatment of water device that gives up | |
| CN103641281B (en) | A kind of organic industrial sewage treatment process method high in salt | |
| CN101591085A (en) | A kind of wastewater treatment and reuse technology for paper mill | |
| CN102557345B (en) | Treatment method of wastewater from processing of betel nuts | |
| CN102657960A (en) | Precipitation reaction and solid-liquid separation integral device | |
| CN105384230B (en) | A kind of cellulose sewage pretreatment device and application | |
| CN103102012B (en) | Anaerobic biochemistry treatment method for cellulose ethanol wastewater | |
| CN105906133A (en) | Method and device for purifying water by means of strong magnetic separation-magnetic biomass charcoal absorption | |
| CN105859076A (en) | Ozone microbubble air floating concentration device and sludge conditioning and concentration method | |
| JP2017516658A (en) | Clarification method of waste water | |
| CN104261524B (en) | High-efficiency flocculation reaction precipitation device and application thereof | |
| CN101602546B (en) | Anaerobic reactor and wastewater treatment method with same | |
| CN106495355A (en) | A kind of electroplating wastewater treatment reclaiming technique and combinations thereof device | |
| CN117466479A (en) | Low-carbon recycling treatment process for bean product wastewater | |
| CN208829505U (en) | After-treatment system of the Fine Chemistry Wastewater after MVR distills | |
| CN204134756U (en) | A kind of novel deliming equipment | |
| CN111170395A (en) | High-pressure multiphase vortex mixer and method for realizing full dissolved air floatation separation | |
| CN205676349U (en) | Ozone microbubble floatation thickening device | |
| CN213112833U (en) | High-efficiency rotational flow purification system | |
| CN104692585A (en) | Process for treating urban domestic sewage | |
| CN209522624U (en) | ECSF type integration electric flocculation high suspended matter wastewater treatment equipment | |
| CN100441527C (en) | Treatment of acid wastewater in cold rolling neutralizing station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20181214 |