CN115140877A - Closed-loop treatment process for upgrading and recycling standard-reaching sewage - Google Patents
Closed-loop treatment process for upgrading and recycling standard-reaching sewage Download PDFInfo
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- CN115140877A CN115140877A CN202210848765.5A CN202210848765A CN115140877A CN 115140877 A CN115140877 A CN 115140877A CN 202210848765 A CN202210848765 A CN 202210848765A CN 115140877 A CN115140877 A CN 115140877A
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- 239000010865 sewage Substances 0.000 title claims abstract description 97
- 238000004064 recycling Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 132
- 208000028659 discharge Diseases 0.000 claims abstract description 19
- 238000011001 backwashing Methods 0.000 claims abstract description 15
- 230000008929 regeneration Effects 0.000 claims abstract description 10
- 238000011069 regeneration method Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 239000002910 solid waste Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000005189 flocculation Methods 0.000 claims description 20
- 230000016615 flocculation Effects 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 11
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000010841 municipal wastewater Substances 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 125000004122 cyclic group Chemical group 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013327 media filtration Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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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)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a closed loop treatment process for upgrading and recycling sewage reaching the standard, municipal reclaimed water or sewage is directly introduced into an advanced treatment module, and water is supplemented into a water storage module after the treatment of the advanced treatment module is finished; wastewater generated by backwashing regeneration of the advanced treatment module is discharged and enters the sewage disposal module, and after being treated by the sewage disposal module, the water quality reaches the municipal wastewater quality, and returns to the advanced treatment module for continuous recycling; the concentrated water generated by the pollution discharge treatment module is subjected to dry-wet separation by the concentrated water treatment module, waste impurities in the water are squeezed and separated to form solid waste to be discharged outside, and the liquid part returns to the pollution discharge treatment module to form a closed loop. The effect is as follows: the technology mainly increases the utilization rate of the regenerated water resource, reduces the waste of the water resource and saves the water consumption cost for water-consuming enterprises; indirectly saves energy and reduces emission for enterprises.
Description
Technical Field
The invention relates to the technical field of municipal standard-reaching discharged sewage regeneration recycling, in particular to a standard-reaching sewage upgrading and recycling closed-loop treatment process which is widely applied to water for direct or indirect evaporative cooling systems, air-conditioning circulating water, water for heating boilers, water for aquaculture, cooling water and the like of various data center machine rooms. And no sewage discharge is generated in the process, so that zero-discharge closed-loop recycling is formed.
Background
Although the existing sewage and reclaimed water treatment discharge can reach the discharge standard regulated by the state, the actual recycling rate is not very high. And the sewage discharge indexes are different according to different regions. The reuse of the sewage reaching the standard is limited to environmental sanitation departments of river discharge, green land maintenance irrigation, road sprinkling and the like. Cannot be deeply utilized again, and causes great resource waste.
At present, the situations of large water consumption, unavailable standard sewage and high tap water cost are formed. Municipal sewage is treated and recycled, and sewage generated in the treatment process is continuously treated by other technologies to reach the municipal sewage discharge standard and returns to the front end for continuous recycling, so that the zero-discharge closed-loop recycling of the sewage is formed.
Disclosure of Invention
Therefore, the invention provides a closed loop treatment process for upgrading and recycling standard-reaching sewage, which mainly solves the water consumption problems that the water consumption is large, the standard-reaching sewage cannot be directly used and the tap water cost is too high; the technology mainly increases the utilization rate of the regenerated water resource, reduces the waste of the water resource and saves the water consumption cost for water-consuming enterprises; indirectly saves energy and reduces emission for enterprises.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to the first aspect of the invention, the closed loop treatment process for upgrading and recycling the standard-reaching sewage comprises the following steps:
s100, directly introducing municipal reclaimed water or sewage into an advanced treatment module, and after the municipal reclaimed water or sewage is treated by the advanced treatment module, making the water reach water supplementing quality and enter a water storage module;
s200, sewage generated by backwashing regeneration of the advanced treatment module enters the sewage disposal module, the sewage is treated by the sewage disposal module, the water quality reaches the municipal sewage quality, and the sewage returns to the advanced treatment module to be reused;
and S300, carrying out dry-wet separation on the concentrated water generated by the sewage disposal module through the concentrated water disposal module, squeezing and separating waste impurities in the water to form solid waste to be discharged outside, and returning the liquid part to the sewage disposal module to form a closed loop.
Further, the advanced treatment module in the step S100 specifically comprises front-end pretreatment equipment, advanced treatment equipment, ultraviolet disinfection equipment and a pressurizing pump set, wherein the front-end treatment equipment, the advanced treatment equipment, the ultraviolet disinfection equipment and the pressurizing pump set are sequentially connected, municipal reclaimed water or sewage is directly introduced into the front-end treatment equipment, and the pressurizing pump set reaches water supplementing water quality after treatment is completed and enters the water storage module.
Further, the advanced treatment module in step S100 further includes a backwashing or regenerating device, and the backwashing or regenerating device is connected to the advanced treatment device.
Further, the sewage disposal module in step S200 specifically includes a regulating reservoir, a sewage lift pump, an electrolytic chemical flocculation device, a flocculation and separation device, an intermediate reservoir, a multi-media filtration device, and a clean water reservoir; the adjusting water tank the sewage lift pump electrolysis chemical flocculation equipment flocculation and splitter the middle water tank multi-medium filter equipment and the clean water tank connect gradually, electrolysis chemical flocculation equipment with flocculation and splitter arrange extremely dense water treatment module.
Furthermore, the sewage lifting pump is arranged between the middle water tank and the multi-medium filtering device.
Further, the filter device also comprises a backwashing pump, and the clean water tank is connected with the multi-media filter device through the backwashing pump.
Further, the device also comprises a recycling pressurization pump set, and the clean water tank returns to the advanced treatment module through the recycling pressurization pump set.
And further, the water storage module subjected to centralized treatment enters the water storage module subjected to dispersed treatment, then water is supplemented to enter the water using equipment, and the water discharged by the water using equipment enters the advanced treatment module.
Furthermore, the advanced treatment module supplements water quality and then enters the water storage module for decentralized treatment.
The invention has the following advantages:
1. the technical form realizes the space range of sewage recycling and expands the field of sewage recycling. Realizing zero discharge of sewage and achieving full utilization of sewage. Saves a large amount of water resources for the country and saves the water using cost for water using enterprises.
2. The device has the advantages of quick installation, small occupied area, flexible assembly, closed-loop treatment, low operation cost, low investment cost, high cyclic utilization rate, zero pollution, zero emission and the like.
3. The advantages of accurate positioning, flexible matching, reasonable matching and combination, quick construction, convenient adjustment and the like are realized.
4. The whole set of equipment is made of environment-friendly materials and can be recycled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is an overall process flow diagram of a closed loop treatment process for upgrading and recycling standard-reaching sewage according to some embodiments of the present invention.
Fig. 2 is a process flow diagram of an advanced treatment module of a closed loop treatment process for upgrading and recycling standard-reaching sewage according to some embodiments of the present invention.
Fig. 3 is a process flow diagram of a sewage disposal module of a closed-loop treatment process for upgrading and recycling sewage reaching the standard according to some embodiments of the present invention.
Fig. 4 is a process flow diagram of a concentrated water treatment module of the closed-loop treatment process for upgrading and recycling the sewage reaching the standard according to some embodiments of the present invention.
Fig. 5 is an overall process flow diagram of an engineering example of the closed-loop treatment process for upgrading and recycling the standard-reaching sewage according to some embodiments of the present invention.
Fig. 6 is a process flow diagram of an anion-cation mixed bed device of a deep treatment module of a closed loop treatment process for upgrading and recycling sewage reaching the standard according to some embodiments of the present invention.
Fig. 7 is a process flow diagram of a concentrated water treatment device of an electrolytic chemical flocculation sewage treatment device of a sewage disposal module of a closed loop treatment process for upgrading and reusing sewage up to standard according to some embodiments of the present invention.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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.
As shown in fig. 1 to 4, in an embodiment of the first aspect of the present invention, a closed-loop treatment process for upgrading and recycling standard-reaching sewage includes the following steps:
s100, directly introducing municipal reclaimed water or sewage into an advanced treatment module, and after the municipal reclaimed water or sewage is treated by the advanced treatment module, making the water reach the water supplementing quality and enter a water storage module;
s200, discharging wastewater generated by backwashing regeneration of the advanced treatment module, allowing the wastewater to enter a sewage disposal module, treating the wastewater by the sewage disposal module to ensure that the water quality reaches the municipal wastewater quality, and returning the wastewater to the advanced treatment module for continuous reuse;
and S300, carrying out dry-wet separation on the concentrated water generated by the sewage disposal module through the concentrated water disposal module, squeezing and separating waste impurities in the water to form solid waste to be discharged outside, and returning the liquid part to the sewage disposal module to form a closed loop.
The technical effects achieved by the above embodiment are as follows: the technical form realizes the space range of sewage recycling and expands the field of sewage recycling. Realizing zero discharge of sewage and achieving full utilization of sewage. A large amount of water resources are saved for the country, and the water using cost is saved for water using enterprises; the installation is rapid, the occupied area is small, the assembly is flexible, the closed-loop treatment is realized, the operation cost is low, the investment cost is low, the cyclic utilization rate is high, zero pollution and zero emission are realized, and the like; the advantages of accurate positioning, flexible matching, reasonable matching and combination, quick construction, convenient adjustment and the like are realized; the whole set of equipment is made of environment-friendly materials and can be recycled.
Optionally, as shown in fig. 1 to 4, in some embodiments, the advanced treatment module in step S100 specifically includes a front-end pretreatment device, an advanced treatment device, an ultraviolet disinfection device, and a pressurization pump set, the front-end treatment device, the advanced treatment device, the ultraviolet disinfection device, and the pressurization pump set are sequentially connected, municipal reclaimed water or sewage is directly introduced into the front-end treatment device, and water reaches water-replenishing quality after the pressurization pump set is treated and enters the water storage module.
Optionally, as shown in fig. 1 to 4, in some embodiments, the advanced treatment module in step S100 further includes a backwashing or regeneration device, and the backwashing or regeneration device is connected to the advanced treatment device.
Optionally, as shown in fig. 1 to 4, in some embodiments, the sewage disposal module in step S200 specifically includes a conditioning water tank, a sewage lift pump, an electrolytic chemical flocculation apparatus, a flocculation and separation apparatus, an intermediate water tank, a multi-media filtering device, and a clean water tank; the adjusting water tank the sewage elevator pump electrolysis chemical flocculation equipment flocculation and splitter middle pond multi-media filter equipment and the clean water basin connects gradually, electrolysis chemical flocculation equipment with flocculation and splitter arrange extremely dense water treatment module.
Optionally, as shown in fig. 1 to 4, in some embodiments, the sewage lift pump is further disposed between the intermediate water tank and the multi-media filtering device.
Optionally, as shown in fig. 1 to 4, in some embodiments, a backwash pump is further included, and the clean water tank is connected with the multi-media filter device through the backwash pump.
Optionally, as shown in fig. 1-4, in some embodiments, a reuse booster pump set is further included, through which the clean water basin returns to the advanced treatment module.
Alternatively, as shown in fig. 1 to 4, in some embodiments, the water storage module for centralized processing enters the water storage module for decentralized processing, and then water is supplied to the water using device, and the water is discharged from the water using device to the advanced processing module.
Optionally, as shown in fig. 1 to 4, in some embodiments, the advanced treatment module supplements water quality and then enters the water storage module for decentralized treatment.
The technical form key points mainly comprise the following four points:
1. the equipment is combined from a single equipment module to a module group. The device has the advantages of quick installation, small occupied area, flexible assembly, closed-loop treatment, low operation cost, low investment cost, high cyclic utilization rate, zero pollution, zero emission and the like.
2. The single module of the equipment is formed by combining a single container body or a plurality of container bodies. The container is internally provided with required water treatment professional equipment. The form and capacity of the equipment are customized according to the water requirement of users and raw water index (local or national sewage discharge index). Different water treatment equipment is adopted for different water qualities.
3. The equipment module group mainly comprises: the device comprises three main components of an advanced treatment module, a sewage discharge recycling module and a concentrated sewage treatment module, and auxiliary equipment such as a matched water storage tank, a water using unit, drainage recycling and the like. The characteristic of closed loop type circulation treatment and cyclic utilization is formed. Finally, the wastewater is concentrated into solid sludge for outward transportation, thereby really realizing zero discharge of the wastewater.
4. The equipment module group (a plurality of single modules and a plurality of module groups) is a module combination which is formed by matching single or a plurality of single modules or module groups with different treatment processes and treatment functions according to the water requirement of a user. Finally, the advantages of accurate positioning, flexible matching, reasonable matching and combination, quick construction, convenient adjustment and the like are realized.
As shown in fig. 5 to 7, in some specific embodiments, the application example is centralized processing of a data center park + integrated processing of a single machine room building with multiple zones.
1. Municipal reclaimed water or sewage is directly introduced into the equipment advanced treatment module, and the water is treated by the advanced treatment module (the reclaimed water advanced treatment module and equipment adopt anion and cation mixed bed equipment) to achieve the water supplementing quality of an indirect evaporative cooling system and enter an intermediate water tank to be used by the equipment.
2. Wastewater discharged by backwashing regeneration of the advanced treatment module enters a sewage discharge treatment module (electrolytic chemical flocculation sewage treatment equipment), and after being treated by the sewage discharge treatment module, the water quality reaches the municipal sewage quality, and the wastewater returns to the advanced treatment module to be recycled continuously.
3. The concentrated water generated by the sewage disposal module is subjected to dry-wet separation through the concentrated water disposal module, waste impurities in the water are squeezed and separated to form solid waste which is discharged outside, and the liquid part returns to the sewage disposal module to form a closed loop.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.
Claims (9)
1. The closed loop treatment process for upgrading and recycling the sewage reaching the standard is characterized by comprising the following steps of:
s100, directly introducing municipal reclaimed water or sewage into an advanced treatment module, and after the municipal reclaimed water or sewage is treated by the advanced treatment module, making the water reach water supplementing quality and enter a water storage module;
s200, sewage generated by backwashing regeneration of the advanced treatment module enters the sewage disposal module, the sewage is treated by the sewage disposal module, the water quality reaches the municipal sewage quality, and the sewage returns to the advanced treatment module to be reused;
and S300, carrying out dry-wet separation on the concentrated water generated by the pollution discharge treatment module through the concentrated water treatment module, squeezing and separating waste impurities in the water to form solid waste, and discharging the solid waste outwards, wherein the liquid part returns to the pollution discharge treatment module to form a closed loop.
2. The closed loop treatment process for upgrading and recycling up-to-standard sewage according to claim 1, wherein the advanced treatment module in step S100 comprises front end pretreatment equipment, advanced treatment equipment, ultraviolet disinfection equipment and a pressurizing pump set, the front end treatment equipment, the advanced treatment equipment, the ultraviolet disinfection equipment and the pressurizing pump set are connected in sequence, municipal reclaimed water or sewage is directly introduced into the front end treatment equipment, and water supplementing quality is achieved after the pressurizing pump set is treated and enters the water storage module.
3. The closed loop treatment process for upgrading and recycling the sewage reaching the standard according to claim 2, wherein the advanced treatment module in the step S100 further comprises backwashing or regeneration equipment, and the backwashing or regeneration equipment is connected with the advanced treatment equipment.
4. The closed loop treatment process for upgrading and recycling up-to-standard sewage according to claim 1, wherein the sewage disposal module in step S200 comprises a conditioning tank, a sewage lift pump, an electrolytic chemical flocculation device, a flocculation and separation device, an intermediate tank, a multi-media filtering device and a clean water tank; the adjusting water tank the sewage lift pump electrolysis chemical flocculation equipment flocculation and splitter the middle water tank multi-medium filter equipment and the clean water tank connect gradually, electrolysis chemical flocculation equipment with flocculation and splitter arrange extremely dense water treatment module.
5. The closed loop treatment process for upgrading and recycling sewage reaching the standard according to claim 4, wherein the sewage lifting pump is further arranged between the intermediate water tank and the multi-media filtering device.
6. The closed loop treatment process for upgrading and recycling the sewage reaching the standard according to claim 5, further comprising a backwashing pump, wherein the clean water tank is connected with the multi-medium filtering device through the backwashing pump.
7. The closed loop process for upgrading and recycling sewage according to claim 6, further comprising a recycling booster pump group, wherein the clean water tank returns to the advanced treatment module through the recycling booster pump group.
8. The closed loop treatment process for upgrading and recycling the sewage reaching the standard according to claim 1, wherein the water storage module for centralized treatment enters the water storage module for decentralized treatment, then water is supplemented to the water using equipment, and the water is discharged from the water using equipment to the advanced treatment module.
9. The closed loop treatment process for upgrading and recycling sewage reaching the standard according to claim 8, wherein the advanced treatment module supplements water quality and then enters the water storage module for decentralized treatment.
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| CN202210848765.5A CN115140877A (en) | 2022-07-19 | 2022-07-19 | Closed-loop treatment process for upgrading and recycling standard-reaching sewage |
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| CN202210848765.5A CN115140877A (en) | 2022-07-19 | 2022-07-19 | Closed-loop treatment process for upgrading and recycling standard-reaching sewage |
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2022
- 2022-07-19 CN CN202210848765.5A patent/CN115140877A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112978A (en) * | 2013-03-12 | 2013-05-22 | 保定钞票纸业有限公司 | Advanced treatment method for cotton slurry paper-making wastewater |
| CN204752384U (en) * | 2015-06-05 | 2015-11-11 | 重庆泰克环保工程设备有限公司 | Electroplate rinsing effluent disposal system |
| CN109293203A (en) * | 2018-09-06 | 2019-02-01 | 贵州民族大学 | A kind of sludge heavy-metal recovery system and method |
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