CN111732295A - Combined building reclaimed water recycling system - Google Patents
Combined building reclaimed water recycling system Download PDFInfo
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- CN111732295A CN111732295A CN202010775042.8A CN202010775042A CN111732295A CN 111732295 A CN111732295 A CN 111732295A CN 202010775042 A CN202010775042 A CN 202010775042A CN 111732295 A CN111732295 A CN 111732295A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000004064 recycling Methods 0.000 title claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 45
- 238000005273 aeration Methods 0.000 claims abstract description 43
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000004062 sedimentation Methods 0.000 claims abstract description 23
- 230000003647 oxidation Effects 0.000 claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 20
- 238000005189 flocculation Methods 0.000 claims abstract description 18
- 230000016615 flocculation Effects 0.000 claims abstract description 18
- 238000001179 sorption measurement Methods 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 239000010802 sludge Substances 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000010865 sewage Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 241000700605 Viruses Species 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/308—Biological phosphorus removal
Landscapes
- 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)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a combined type building reclaimed water recycling system which comprises a grid, a regulating area, an electric flocculation area, a folded plate sedimentation area, an aeration biological filtering area, an ozone contact oxidation area and an activated carbon adsorption filtering area which are connected in series. The water in the building enters the adjusting area through the grating for homogenizing and equalizing, and is lifted to the electric flocculation area by the lifting pump, and pollutant floccules are formed in the water and are precipitated in the folded plate precipitation area and discharged through the sludge discharge pipe. The water in the building is subjected to denitrification and dephosphorization in the aeration biological filtering area and then is subjected to advanced treatment in the ozone contact oxidation area and the active carbon adsorption filtering area, so that the safety of the recycled water quality is improved. The invention can effectively solve the problem that the water in the building is low in pollution and difficult to treat in a small scale, and has the advantages of good reuse water quality, low investment and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a combined type building reclaimed water recycling system.
Background
Currently, China is in the period of high-speed economic development, and in addition to the increase of population and the rapid expansion of urbanization, the usage of water resources in China is almost close to the available supply of water resources. In 662 cities in the country, 400 cities have annual water shortage, wherein 110 cities have severe water shortage, and the daily water shortage reaches 1600 ten thousand meters3. In fact, water is a natural resource that can be regenerated and recycled. The traditional town water resource management mode in China is mainly characterized in that one-way request is made to a natural system, surface runoff generated by natural water resources and waste water generated by artificial water circulation are discharged, and rainwater runoff and sewage are regarded as a burden and are not used as a resource. As sewage treatment process and place are adopted in many urban sewage plantsThe unreasonable treatment equipment causes low sewage treatment efficiency and large treatment energy consumption, and sewage plants can not bear the sewage treatment load with large water volume.
Aiming at the characteristics and problems of urban water circulation, the construction of sponge cities is vigorously promoted in response to the nation, the use of technical elements in sponge city construction is fully reflected, the core aim of improving the utilization efficiency of surface rainwater runoff and building reclaimed water resources from a runoff producing source is taken as a core target, accumulated building reclaimed water is subjected to purification treatment and is used for the aspects of urban production, life, ecological construction and the like, and the water resource utilization rate is improved by strengthening the connection between manpower and a natural water circulation system.
Disclosure of Invention
The technical problem is as follows: the invention aims to provide a combined type building reclaimed water recycling system, which treats building reclaimed water through mutual combination of regions, so that the system meets the relevant requirements of 'urban sewage recycling urban miscellaneous water quality' (GB/T18920-2002), and meets the trend of recycling urban building reclaimed water in the future.
The technical scheme is as follows: a modular building reuse of reclaimed water system, comprising: the device comprises a grid, a regulating area, an electric flocculation area, a folded plate sedimentation area, an aeration biological filtering area, an ozone contact oxidation area and an active carbon adsorption filtering area. The water in the building is collected at multiple points and sequentially passes through a pretreatment functional area, a nitrogen and phosphorus removal treatment functional area and a sterilization and disinfection treatment functional area. Continuous water inflow is adopted among the functional areas, building reclaimed water is treated by mutual combination, and treated water in each functional area enters the next functional area through a water pipe or an overflow channel.
The grid, the adjusting area, the electric flocculation area, the folded plate sedimentation area, the aeration biological filtering area, the ozone contact oxidation area and the active carbon adsorption filtering area are connected in series;
the grating is connected with the adjusting area, and the grating is arranged in the grating;
a lift pump is arranged in the adjusting area and is connected with the electric flocculation area through a pipeline;
the electric flocculation area is connected with the top of the folded plate sedimentation area through a water pipe, a plurality of PVC inclined plates are arranged in the folded plate sedimentation area, and a sludge discharge pipe is arranged at the bottom of the sedimentation area;
the folded plate sedimentation area is connected with the bottom of the aeration biological filtering area, a washing water inlet pipe is arranged at the top in the aeration biological filtering area, an aeration pipe is arranged in the middle, a reverse aeration pipe and a washing water outlet pipe are arranged at the bottom, and the aeration pipe is externally connected with a blower;
the aeration biological filtering area is connected to the ozone contact oxidation area through a diversion trench;
the ozone contact oxidation area is connected with the activated carbon adsorption filtering area through an overflow groove, and the ozone contact oxidation area is connected with an external ozone generator;
the top in the active carbon adsorption filtration district sets up washes the inlet tube, and the bottom sets up the retrieval and utilization outlet pipe and washes the outlet pipe.
As a further scheme of the invention: the distance between the grids in the grids is 4 mm.
As a further scheme of the invention: the electrode material in the electric flocculation area is iron, and the current density is 30-80A/m2Direct current.
As a further scheme of the invention: and a plurality of 1.0m long PVC inclined plates forming an inclination angle of 60 degrees with the horizontal plane are arranged in the folded plate sedimentation area.
As a further scheme of the invention: the filter material layer in the aeration biological filtering area is internally provided with an aeration pipe, the filtering area is divided into an upper aerobic area and a lower anoxic area by an aeration system, the lower anoxic area is provided with a polypropylene filler with the particle size of 20mm, the upper aerobic area is provided with a gravel filler with the particle size of 2-5mm, a modified zeolite and high-calcium fly ash ceramsite composite filler with the particle size of 1-3mm and a fine sand filler with the particle size of 1-2mm from bottom to top, and all the fillers are manually filmed in advance before being placed.
As a further scheme of the invention: the active carbon adsorption filtration area comprises an upper active carbon bag and a lower quartz sand layer with the grain diameter of 0.5-0.7 mm.
Compared with the prior art, the invention has the beneficial effects that:
(1) the system can effectively decolor the wastewater in the electric flocculation area, remove oil and fat in the water and improve the subsequent biological treatment effect;
(2) the system can effectively cut bubbles by using the filler after the treated water passes through the aeration biological filtration area and the biological biofilm combined filler, thereby improving the oxygen transfer rate and the utilization rate of the aerobic area and strengthening the nitrogen and phosphorus removal efficiency;
(3) the system inactivates and removes residual filtering viruses, other viruses and spores in water in the ozone contact oxidation zone, and improves the water quality safety of the effluent.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a modular building reuse system according to the present invention.
Among them are: the device comprises a grid 1, a regulating zone 2, an electric flocculation zone 3, a folded plate sedimentation zone 4, an aeration biological filtration zone 5, an ozone contact oxidation zone 6, an activated carbon adsorption filtration zone 7, a reuse water outlet pipe 8, a lifting pump 9, a sludge discharge pipe 10, an aeration pipe 11, a blower 12, a washing water inlet pipe 13, a reverse aeration pipe 14, a washing water outlet pipe 15, an ozone outlet pipe 16, an ozone generator 17, a washing water inlet pipe 18 and a washing water outlet pipe 19.
Detailed Description
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.
Referring to fig. 1, in an embodiment of the present invention, a combined building reclaimed water recycling system includes: the device comprises a grid 1, a regulating zone 2, an electric flocculation zone 3, a folded plate sedimentation zone 4, an aeration biological filtration zone 5, an ozone contact oxidation zone 6, an activated carbon adsorption filtration zone 7, a reuse water outlet pipe 8, a lifting pump 9, a sludge discharge pipe 10, an aeration pipe 11, a blower 12, a washing water inlet pipe 13, a reverse aeration pipe 14, a washing water outlet pipe 15, an ozone outlet pipe 16, an ozone generator 17, a washing water inlet pipe 18 and a washing water outlet pipe 19. The grid 1, the adjusting zone 2, the electric flocculation zone 3, the folded plate sedimentation zone 4, the aeration biological filtration zone 5, the ozone contact oxidation zone 6 and the activated carbon adsorption filtration zone 7 are arranged in series, and each treatment unit adopts continuous water inflow to ensure the normal operation of the treatment unit.
The grid 1 is connected with the adjusting area 2, and fine grids with the distance of 4mm are arranged in the grid 1 and used for intercepting and removing larger suspended matters and floating objects, so that the processing load of a subsequent processing area is reduced, and the normal work of subsequent structures and equipment is ensured. Set up elevator pump 9 in regulation district 2, elevator pump 9 is connected to electric flocculation district 3 through the pipeline, places iron as electrode material in electric flocculation district 3 region, and it is 30 ~ 80A/m to lead to with current density2The direct current of the water treatment device causes the iron metal anode to generate electrochemical reaction, and the dissolved Fe2+ ions are flocculated in water, so that the grease-containing wastewater which is difficult to treat by a biological method is treated efficiently. The electric flocculation area 3 is connected with the top of a folded plate sedimentation area 4 through a water pipe, a plurality of 1.0m long PVC inclined plates forming an inclination angle of 60 degrees with the horizontal plane are arranged in the folded plate sedimentation area 4, the folded plate sedimentation effect is good, the occupied area is small, a sludge discharge pipe 10 is arranged at the bottom of the folded plate sedimentation area 4, the folded plate sedimentation area 4 is connected with the bottom of the aeration biological filtering area 5, and treated water overflows after being precipitated in the folded plate sedimentation area 4 and enters the aeration biological filtering area 5 through a cushion layer after being distributed with water by a long-handle filter head.
The middle part in the aeration biological filtering area 5 is provided with an aeration pipe 11, the aeration pipe 11 is connected with an air blower 12, the filtering area is divided into an upper aerobic area and a lower anoxic area by an aeration system, the treated water is firstly placed in the polypropylene filler anoxic area with the particle size of 2cm through the lower part, the gravel with the particle size of 2-5mm, the modified zeolite and high-calcium fly ash ceramsite composite filler with the particle size of 1-3mm and the fine sand filler with the particle size of 1-2mm are placed in the upper aerobic area, all the fillers are manually hung in advance, the fillers in the aerobic area can effectively cut bubbles, the transfer rate and the utilization rate of oxygen are improved, the water-gas biomembrane is fully exchanged, organic matters in water are efficiently treated, and meanwhile, the film-hanging microorganism can effectively utilize nitrogen and phosphorus elements in the water as self nutrient substances, and the nitrogen. The bottom of the aeration biological filtering area 5 is provided with a flushing water inlet pipe 13 and a reverse aeration pipe 14, and the top is provided with a flushing water outlet pipe 15 for flushing the filler.
The aeration biological filtering area 5 is connected to an ozone contact oxidation area 6 through a diversion trench, the ozone contact oxidation area 6 is connected with an activated carbon adsorption filtering area 7 through an overflow groove, the ozone contact oxidation area 6 is connected with an external ozone generator 17, water after aeration treatment enters the ozone contact oxidation area 6 through the top diversion trench, free radicals generated by ozone inactivate residual filtering viruses and other viruses and spores in the water, and the water quality safety of effluent is improved. The water flow overflows from the top to the activated carbon adsorption filtration area 7, passes through the upper activated carbon bag and the lower quartz sand with the grain diameter of 0.5-0.7mm in sequence, the water is subjected to deep filtration, and finally the purified water in the building enters a recycling system from a recycling water outlet pipe 8 arranged at the bottom of the activated carbon adsorption filtration area 7. The bottom and the top of the active carbon adsorption filtering area 7 are also connected with a washing water inlet pipe 18 and a washing water outlet pipe 19.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. A modular building reuse of reclaimed water system, comprising: grid (1), regulatory region (2), electric flocculation district (3), folded plate sedimentation zone (4), aeration biological filtration district (5), ozone catalytic oxidation district (6), activated carbon adsorption filtering area (7) retrieval and utilization outlet pipe (8), elevator pump (9), mud pipe (10), aeration pipe (11), air-blower (12), wash inlet tube (13), anti-aeration pipe (14), wash outlet pipe (15), ozone outlet duct (16), ozone generator (17), wash inlet tube (18), wash outlet pipe (19), its characterized in that:
the device comprises a grid (1), a regulating area (2), an electric flocculation area (3), a folded plate sedimentation area (4), an aeration biological filtering area (5), an ozone contact oxidation area (6) and an activated carbon adsorption filtering area (7) which are arranged in series;
the grid (1) is connected with the adjusting area (2), and a grid is arranged in the grid (1);
a lifting pump (9) is arranged in the adjusting area (2), and the lifting pump (9) is connected with the electric flocculation area (3) through a pipeline;
the electric flocculation area (3) is connected with the top of the folded plate sedimentation area (4) through a water pipe, a plurality of PVC inclined plates are arranged in the folded plate sedimentation area (4), and a sludge discharge pipe (10) is arranged at the bottom of the sedimentation area;
the folded plate sedimentation area (4) is connected with the bottom of the aeration biological filtering area (5), the top in the aeration biological filtering area (5) is provided with a washing water inlet pipe (13), the middle part is provided with an aeration pipe (11), the bottom is provided with a reverse aeration pipe (14) and a washing water outlet pipe (15), and the aeration pipe (11) is externally connected with an air blower (12);
the aeration biological filtering area (5) is connected to the ozone contact oxidation area (6) through a diversion trench;
the ozone contact oxidation area (6) is connected with the active carbon adsorption filtration area (7) through an overflow groove, and the ozone contact oxidation area (6) is connected with an external ozone generator (17);
the top in the activated carbon adsorption filtration zone (7) pool is provided with a washing water inlet pipe (18), and the bottom is provided with a recycling water outlet pipe (8) and a washing water outlet pipe (19).
2. The electroflocculation zone (3) according to claim 1, characterized in that iron electrodes are used, with a current density of 30-80A/m2Direct current.
3. The aerated biological filter zone (5) according to claim 1, wherein the filter material layer is provided with an aeration pipe (11), the aeration system divides the filter zone into an upper aerobic zone and a lower anoxic zone, the lower anoxic zone is provided with polypropylene filler, the upper aerobic zone is provided with gravel, modified zeolite, high-calcium fly ash ceramsite composite filler and fine sand filler, and all the fillers are manually filmed in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775042.8A CN111732295A (en) | 2020-07-22 | 2020-07-22 | Combined building reclaimed water recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775042.8A CN111732295A (en) | 2020-07-22 | 2020-07-22 | Combined building reclaimed water recycling system |
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| Publication Number | Publication Date |
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| CN111732295A true CN111732295A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010775042.8A Pending CN111732295A (en) | 2020-07-22 | 2020-07-22 | Combined building reclaimed water recycling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2029219A (en) * | 2021-08-17 | 2021-11-09 | Univ North China Science & Technology | Apparatus for advanced sewage treatment |
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2020
- 2020-07-22 CN CN202010775042.8A patent/CN111732295A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2029219A (en) * | 2021-08-17 | 2021-11-09 | Univ North China Science & Technology | Apparatus for advanced sewage treatment |
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Application publication date: 20201002 |
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