CN112979080B - Multifunctional organic carrier recycling device and method - Google Patents
Multifunctional organic carrier recycling device and method Download PDFInfo
- Publication number
- CN112979080B CN112979080B CN202110225715.7A CN202110225715A CN112979080B CN 112979080 B CN112979080 B CN 112979080B CN 202110225715 A CN202110225715 A CN 202110225715A CN 112979080 B CN112979080 B CN 112979080B
- Authority
- CN
- China
- Prior art keywords
- tank
- sludge
- settling
- slow
- organic carrier
- 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.)
- Active
Links
Images
Classifications
-
- 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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a multifunctional organic carrier recycling device and a method, comprising an organic carrier preparation device, a mixing tank, a flocculation composite tank, an anoxic tank, an aerobic tank quick-settling tank, a slow-settling tank and a concentration tank which are sequentially communicated; the organic carrier preparation device comprises an ultrafine grinder, a cyclone separator, a draught fan, a washing tower, a curing box and a quality grading box; a flow control valve is arranged on a connecting pipeline of the quality separating box of the organic carrier preparation device and the mixing pool; a sewage raw water inlet is formed above the anoxic tank; and part of the effluent of the slow settling tank flows back to the washing tower through a washing water pump. The device and the method provided by the invention adopt agricultural wastes to prepare the organic carrier which can be used as a slow-release carbon source and a carrier for microbial growth, improve the average specific gravity of the sludge, achieve the purposes of rapid sedimentation and sludge concentration improvement, greatly reduce the energy consumption of sludge backflow, reduce the dilution of sewage and raw water and improve the reaction rate.
Description
Technical Field
The invention belongs to the technical field of agricultural waste recycling, and particularly relates to a multifunctional organic carrier recycling device and method.
Background
The activated sludge process has been used for over 100 years in sewage treatment. Because the sludge is composed of microorganisms, the specific gravity of the sludge is close to that of water, the sedimentation performance is poor, the occupied area of a sedimentation tank for separating mud from water is large, the solid content of the settled sludge is low, the concentration of the sludge in a biochemical tank can be usually maintained at about 3-4g/L after a large amount of sludge is refluxed, and the treatment efficiency is low. The adoption of the MBR process for intercepting the sludge can cause a series of problems of great increase of the operation cost, sludge expansion and the like.
In recent years, the method of increasing the sludge concentration by adding carrier fillers has proved to be an effective method, and most processes add fixed plastic fillers and suspended plastic fillers as carriers for attachment of microorganisms. The method has high investment cost and high requirements on operators, and can cause micro plastic pollution. Therefore, it is highly desirable to find a new carrier to replace the original plastic carrier.
On the other hand, with the continuous improvement of living standard of people, the nitrogen content in the urban domestic sewage is higher and higher, and the carbon-nitrogen ratio in the sewage is gradually imbalanced, so that a cheap sustainable carbon source is urgently needed to be searched for to reduce the running cost of the urban domestic sewage.
Disclosure of Invention
Aiming at the defects, the invention provides a multifunctional organic carrier recycling device and a method.
The invention provides the following technical scheme: a multifunctional organic carrier recycling device comprises an organic carrier preparation device, a mixing tank, a flocculation composite tank, an anoxic tank, an aerobic tank, a quick settling tank, a slow settling tank and a concentration tank which are sequentially communicated;
the organic carrier preparation device comprises an ultrafine pulverizer, a cyclone separator, a draught fan, a washing tower, a curing box and a quality grading box;
a flow control valve is arranged on a connecting pipeline of the quality separating box of the organic carrier preparation device and the mixing pool;
a mixed liquid pump is arranged on a connecting pipeline of the aerobic tank and the anoxic tank, a fast settling sludge pump is arranged on a connecting pipeline of the fast settling tank and the anoxic tank, and a slow settling concentrated sludge pump is arranged on a connecting pipeline of the concentration tank and the mixed tank; a raw sewage inlet is formed above the anoxic pond;
and part of the effluent of the slow settling tank flows back to the washing tower through a washing water pump.
Furthermore, a first stirrer is arranged in the curing box, and a scum valve is arranged on the side part of the curing box.
Furthermore, a flow pushing device is arranged in the quality separating box.
Further, a second stirrer is arranged in the mixing pool.
Further, a third stirrer is arranged in the flocculation composite tank.
Further, a fourth stirrer is arranged in the anoxic tank.
Further, a fifth stirrer is arranged in the aerobic tank.
The invention also provides a method for recycling the multifunctional organic carrier by adopting the device, which comprises the following steps:
1) the dried straws are crushed to be below 30 meshes by the ultrafine crusher, the dried straws are conveyed to a cyclone separator through the draught fan to be separated, and the ultrafine straws in the tail gas are washed by tail water lifted by the washing water pump and then discharged after reaching the standard;
2) the ultramicro straws and the washing liquid separated by the cyclone separator fall into the curing box, the straws are fully soaked and cured, the average specific gravity of the cured micro-powder straws is greater than that of water and can be rapidly precipitated, part of impurities with lighter density can be discharged through a scum valve, then the straw mixed liquid enters the quality separation box for precipitation separation, and the straw mixed liquid at the bottom obtained by separation of the quality separation box enters the mixing tank as carrier liquid;
3) then the mixed liquid in the mixing tank enters the flocculation composite tank, and in the flocculation composite tank, due to the biological flocculation effect of the zoogloea, straw micro powder and sludge are gradually adhered to form composite active particles which take ultramicro straws as core carriers and are adhered with active sludge, so that the sedimentation performance of the slow-settling sludge is greatly improved;
4) the composite active particles enter the anoxic tank for denitrification treatment, and degradable organic matters in the straws are gradually hydrolyzed to form an effective carbon source to provide an electron donor for denitrification;
5) then the mixed liquid enters the aerobic tank and is subjected to aerobic treatment by utilizing a traditional aeration system;
6) then the mixed liquor enters the rapid sedimentation tank, the sedimentation time in the rapid sedimentation tank is not more than 30min actually, most sludge is intercepted, the concentration is enabled to reach 99% -95% of the water content, and the concentration of the sludge in the anoxic aerobic tank is improved to 6-10g/L by the returned high-concentration sludge;
7) the effluent of the quick settling tank enters the slow settling tank, and slow settling sludge is intercepted;
8) and after the sludge discharged from the slow settling tank enters the concentration tank for concentration, the sludge is conveyed to the mixing tank by the slow settling concentrated sludge pump, and the redundant sludge is discharged as residual sludge.
Further, in the step 2), the impurities floating in the straw mixed liquid entering the quality separating box are driven by the flow pushing device to return to the curing box for curing again.
Further, the carrier liquid entering the mixing tank in the step 2) controls the flow through the flow control valve to adjust the compatibility proportion with the slow-settling concentrated sludge, and the frequency conversion control of the slow-settling concentrated sludge pump can also adjust the compatibility flow, so that the carrier liquid and the slow-settling concentrated sludge in the mixing tank are fully and uniformly mixed.
The invention has the beneficial effects that:
the multifunctional organic carrier recycling device and the multifunctional organic carrier recycling method provided by the invention have the advantages that the multifunctional organic carrier prepared from agricultural wastes can be used as a slow-release carbon source and a carrier for microbial growth, the average specific gravity of sludge is improved, the purposes of rapid sedimentation and sludge concentration improvement are achieved, the energy consumption of sludge backflow is greatly reduced, the dilution of sewage raw water is reduced, and the reaction rate is improved.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 is an overall schematic diagram of a multifunctional organic carrier recycling device provided by the present invention.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the multifunctional organic carrier recycling device provided by the invention comprises an organic carrier preparation device 1, a mixing tank 2, a flocculation composite tank 3, an anoxic tank 4, an aerobic tank 5, a quick sedimentation tank 6, a slow sedimentation tank 7 and a concentration tank 8 which are sequentially communicated;
the organic carrier preparation device 1 comprises an ultrafine grinder 101, a cyclone separator 102, a draught fan 103, a washing tower 104, a curing box 105 and a quality separation box 106;
a flow control valve 106-1 is arranged on a connecting pipeline of the quality separating box 106 of the organic carrier preparation device 1 and the mixing pool 2;
a mixed liquid pump 5-1 is arranged on a connecting pipeline of the aerobic tank 5 and the anoxic tank 4, a fast settling sludge pump 6-1 is arranged on a connecting pipeline of the fast settling tank 6 and the anoxic tank 4, and a slow settling concentrated sludge pump 8-1 is arranged on a connecting pipeline of the concentration tank 8 and the mixed tank 2; a sewage raw water inlet 401 is arranged above the anoxic tank;
part of the effluent of the slow settling tank 7 flows back to the washing tower 104 through a washing water pump 7-1.
A first stirrer 105-1 is arranged in the curing box 105, and a scum valve 105-2 is arranged at the side part; a flow pushing device 106-2 is arranged in the quality separating box 106, a second stirring machine 201 is arranged in the mixing tank 2, a third stirring machine 301 is arranged in the flocculation composite tank 3, a fourth stirring machine 402 is arranged in the anoxic tank 4, and a fifth stirring machine 501 is arranged in the aerobic tank 5.
Example 2
The embodiment provides a recycling method of multifunctional organic carriers by adopting the device, which comprises the following steps:
1) the dried straws are crushed to be below 30 meshes by using an ultrafine crusher 101, the dried straws are conveyed to a cyclone separator through a draught fan 103 to be separated, and the ultrafine straws in the tail gas are washed by tail water lifted by a washing water pump 7-1 and then discharged after reaching the standard;
2) the ultramicro straw and the washing liquid separated by the cyclone separator 102 fall into a curing box 105, the straw is fully soaked and cured, the average specific gravity of the cured micro-powder straw is greater than that of water and can be rapidly precipitated, part of impurities with lighter density can be discharged through a scum valve, then the straw mixed liquid enters a quality separation box 106 for precipitation separation, the straw mixed liquid at the bottom obtained by separation of the quality separation box enters a mixing pool 2 as carrier liquid, and the impurities floating in the straw mixed liquid entering the quality separation box 106 return to the curing box for curing again under the drive of a flow pusher 106-2;
the carrier liquid entering the mixing tank 2 controls the flow through the flow control valve 106-1 to adjust the compatibility proportion with the slow-sedimentation concentrated sludge, and the frequency conversion control of the slow-sedimentation concentrated sludge pump 8-1 can also adjust the compatibility flow, so that the carrier liquid in the mixing tank 2 and the slow-sedimentation concentrated sludge are fully and uniformly mixed;
3) then the mixed liquid in the mixing tank 2 enters a flocculation composite tank 3, in the flocculation composite tank 3, due to the biological flocculation effect of zoogloea, straw micro-powder and sludge are gradually adhered to form composite active particles which take ultramicro straws as core carriers and are adhered with active sludge, and the sedimentation performance of the slow-sedimentation sludge is greatly improved;
4) the composite active particles enter the anoxic tank 4 for denitrification treatment, degradable organic matters in the straws are gradually hydrolyzed to form an effective carbon source, an electron donor is provided for denitrification, expensive carbon sources such as sodium acetate and the like are not required to be additionally added, and the denitrification cost is greatly reduced;
5) then the mixed liquid enters an aerobic tank 5, and aerobic treatment is carried out by utilizing a traditional aeration system; determining whether a stirrer is required to be added to prevent straw from precipitating according to the type of the actually added straw and the aeration intensity;
6) then the mixed liquor enters a quick settling tank 6, the settling time in the quick settling tank is not more than 30min actually, most sludge is intercepted, the concentration is enabled to reach 99% -95% of the water content, and the concentration of the sludge in the anoxic aerobic tank is improved to 6-10g/L through the returned high-concentration sludge; the volume of the sludge and the backflow energy consumption are greatly reduced, meanwhile, the backflow liquid is prevented from diluting the raw sewage, and the biochemical reaction dynamics rate is greatly improved;
7) the effluent of the quick settling tank 6 enters a slow settling tank 7 to intercept slow settling sludge; the water quality is improved, the double sludge age control of a biochemical system is realized, the sludge types of a living system are enriched, and the system stability is enhanced;
8) sludge discharged from the slow settling tank 7 enters a concentration tank 8 for concentration, and then is conveyed to a mixing tank 2 by a slow settling concentrated sludge pump 8-1, and redundant sludge is discharged as residual sludge. The residual sludge contains high-heat-value substances such as nondegradable humus in the straw, the heat value of the residual sludge is higher than that of the residual sludge prepared by the traditional activated sludge method, and the self-balance of drying and burning heat energy can be achieved after dehydration treatment.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. A multifunctional organic carrier recycling method is characterized in that the method is based on a multifunctional organic carrier recycling device;
the multifunctional organic carrier recycling device comprises an organic carrier preparation device (1), a mixing tank (2), a flocculation composite tank (3), an anoxic tank (4), an aerobic tank (5), a quick sedimentation tank (6), a slow sedimentation tank (7) and a concentration tank (8) which are communicated in sequence;
the organic carrier preparation device (1) comprises an ultrafine grinder (101), a cyclone separator (102), an induced draft fan (103), a washing tower (104), a curing box (105) and a quality separation box (106);
a flow control valve (106-1) is arranged on a connecting pipeline of a quality separating box (106) of the organic carrier preparation device (1) and the mixing pool (2);
a mixed liquid pump (5-1) is arranged on a connecting pipeline of the aerobic tank (5) and the anoxic tank (4), a fast-settling sludge pump (6-1) is arranged on a connecting pipeline of the fast-settling tank (6) and the anoxic tank (4), and a slow-settling concentrated sludge pump (8-1) is arranged on a connecting pipeline of the concentration tank (8) and the mixed tank (2); a raw sewage inlet (401) is arranged above the anoxic pond;
part of the effluent of the slow settling tank (7) flows back to the washing tower (104) through a washing water pump (7-1);
a first stirrer (105-1) is arranged in the curing box (105), and a scum valve (105-2) is arranged at the side part of the curing box; a third stirrer (301) is arranged in the flocculation composite tank (3);
the recycling method of the multifunctional organic carrier comprises the following steps:
1) the dried straws are crushed to be below 30 meshes by the ultrafine crusher (101), the dried straws are conveyed to a cyclone separator for separation by the induced draft fan (103) in a pneumatic mode, and the ultrafine straws in tail gas are washed by tail water lifted by the washing water pump (7-1) and then discharged after reaching the standard;
2) the ultramicro straws and the washing liquid separated by the cyclone separator (102) fall into the curing box (105), the straws are fully soaked and cured, the average specific gravity of the cured micro-powder straws is greater than that of water, so that the micro-powder straws are rapidly precipitated, part of impurities with lighter density are discharged through a scum valve, then straw mixed liquid enters the quality grading box (106) for precipitation separation, and the straw mixed liquid at the bottom obtained by the separation of the quality grading box enters the mixing pool (2) as carrier liquid;
3) then the mixed liquid in the mixing tank (2) enters a flocculation composite tank (3), and in the flocculation composite tank (3), due to the biological flocculation effect of zoogloea, straw micro powder and sludge are gradually adhered to form composite active particles which take ultramicro straws as core carriers and are adhered with active sludge, so that the sedimentation performance of the slow-settling sludge is greatly improved;
4) the composite active particles enter the anoxic tank (4) for denitrification treatment, and degradable organic matters in the straws are gradually hydrolyzed to form an effective carbon source so as to provide an electron donor for denitrification;
5) then the mixed liquid enters the aerobic tank (5) and is subjected to aerobic treatment by an aeration system;
6) then the mixed liquor enters the quick settling tank (6), the settling time in the quick settling tank is not more than 30min actually, most sludge is intercepted, the concentration is enabled to be 99% -95%, and the concentration of the sludge in the anoxic aerobic tank is improved to 6-10g/L by the returned high-concentration sludge;
7) the effluent of the quick settling tank (6) enters the slow settling tank (7) to intercept slow settling sludge;
8) and sludge discharged from the slow settling tank (7) enters the concentration tank (8) for concentration, and is conveyed to the mixing tank (2) by the slow settling concentrated sludge pump (8-1), and redundant sludge is discharged as residual sludge.
2. The recycling method of multifunctional organic carriers according to claim 1, wherein a flow pusher (106-2) is disposed in the quality-dividing box (106).
3. The recycling method of multifunctional organic carriers according to claim 1, wherein a second stirrer (201) is disposed in said mixing tank (2).
4. The recycling method of multifunctional organic vehicle as claimed in claim 1, wherein a fourth agitator (402) is disposed in the anoxic tank (4).
5. The recycling method of multifunctional organic carriers as claimed in claim 1, wherein a fifth agitator (501) is disposed in the aerobic tank (5).
6. The method for recycling the multifunctional organic carriers as claimed in claim 2, wherein in the step 2), the impurities floating in the straw mixed liquid entering the quality separating box (106) are driven by the flow pushing device (106-2) to return to the curing box for curing again.
7. The method for recycling the multifunctional organic carrier according to claim 6, wherein the carrier liquid entering the mixing tank (2) in the step 2) is controlled to flow through the flow control valve (106-1) to adjust the compatibility ratio with the slow settling concentrated sludge, and the slow settling concentrated sludge pump (8-1) is controlled to adjust the compatibility flow through frequency conversion, so that the carrier liquid and the slow settling concentrated sludge in the mixing tank (2) are fully and uniformly mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110225715.7A CN112979080B (en) | 2021-03-01 | 2021-03-01 | Multifunctional organic carrier recycling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110225715.7A CN112979080B (en) | 2021-03-01 | 2021-03-01 | Multifunctional organic carrier recycling device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112979080A CN112979080A (en) | 2021-06-18 |
| CN112979080B true CN112979080B (en) | 2022-09-13 |
Family
ID=76351575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110225715.7A Active CN112979080B (en) | 2021-03-01 | 2021-03-01 | Multifunctional organic carrier recycling device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112979080B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718317A (en) * | 2012-06-01 | 2012-10-10 | 天津大学 | Method and application of performing hydrolytic acidification to excess sludge and straws to supply carbon source for promoting bio-denitrification |
| CN107628684A (en) * | 2017-10-31 | 2018-01-26 | 沈阳建筑大学 | A kind of apparatus and method of improvement MBBR PROCESS FOR TREATMENT low carbon-nitrogen ratio sewages |
| SE542009C2 (en) * | 2018-01-29 | 2020-02-11 | Veolia Water Solutions & Tech | Biofilm carrier media in moving bed biofilm reactor processes |
| CN109052867A (en) * | 2018-10-08 | 2018-12-21 | 江苏裕隆环保有限公司 | A kind of dispersed wastewater EGA processing unit and treatment process based on modified active carrier |
| CN109607779A (en) * | 2019-02-21 | 2019-04-12 | 合肥工业大学 | A kind of method of anerobic sowage ammoxidation coupling solid phase denitrification efficient denitrification |
-
2021
- 2021-03-01 CN CN202110225715.7A patent/CN112979080B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112979080A (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100371270C (en) | Combined treatment process for manioc producing effluent | |
| CN102001784B (en) | High efficiency low energy consumption urban sewage dephosphorization denitrification treatment method | |
| CN101973672B (en) | Zero-energy consumption urban sewage dephosphorization treatment method | |
| CN101269904B (en) | Method for wastewater treatment of fermentation groove liquid and uses thereof | |
| CN201062224Y (en) | Sewage water treatment system for refining cotton | |
| CN101935136B (en) | Zero energy consumption low sludge yield municipal sewage dephosphorization and denitrification treatment method | |
| JP2013527023A (en) | System and method for reducing sludge produced in wastewater treatment facilities | |
| CN111348748A (en) | Aerobic granular sludge sewage treatment process and equipment of two-stage sequencing batch reactor | |
| CN108658638A (en) | A kind of device with anaerobic fermentation and medium temperature oxidization combination operation production organic fertilizer | |
| WO2014094484A1 (en) | Garbage leachate treatment method and system | |
| CN209940781U (en) | Classification treatment and recycling system for pharmaceutical wastewater | |
| CN113664023A (en) | System and process for purifying sewage by using kitchen waste hydrolysis as denitrification carbon source | |
| CN100534932C (en) | Synthetic treating process for pulp waste water | |
| CN110950520A (en) | Multiphase solid waste treatment method | |
| CN110066831B (en) | Method for quickly preparing biogas from kitchen waste | |
| CN106365373A (en) | Method and apparatus for treating municipal sludge anaerobic digestion solution | |
| CN208345988U (en) | A kind of small-town sewage treatment system based on anaerobism MBR technology | |
| CN112759210B (en) | Sludge treatment system and method | |
| CN101781055A (en) | Treatment method of waste papermaking water | |
| CN212050743U (en) | Equipment for aerobic granular sludge sewage treatment process of two-stage sequencing batch reactor | |
| CN112979080B (en) | Multifunctional organic carrier recycling device and method | |
| CN114149155B (en) | Urine extraction wastewater treatment and nitrogen and phosphorus resource recovery method | |
| CN203382611U (en) | Treatment device for wastewater from production of purified terephthalic acid | |
| CN209778587U (en) | Integrated device for treating human black water by applying dynamic membrane anaerobic MBR-forward osmosis technology | |
| CN208632331U (en) | Garbage percolation liquid treating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |