CN219031843U - Circulation cooling sewage recycling system - Google Patents
Circulation cooling sewage recycling system Download PDFInfo
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- CN219031843U CN219031843U CN202223520041.2U CN202223520041U CN219031843U CN 219031843 U CN219031843 U CN 219031843U CN 202223520041 U CN202223520041 U CN 202223520041U CN 219031843 U CN219031843 U CN 219031843U
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Abstract
The utility model relates to a circulating cooling sewage recycling system which comprises a cooling tower, a raw water tank, a raw water pump, a pollution-resistant ultrafiltration membrane, a filtering water tank, a water feeding pump, a security filter, a reverse osmosis membrane and a wastewater system which are sequentially connected, wherein a compressed air input device is connected between the raw water pump and the pollution-resistant ultrafiltration membrane and between the pollution-resistant ultrafiltration membrane and the filtering water tank, and the produced water of the reverse osmosis membrane is connected with the cooling tower. One end of the membrane wire in the pollution-resistant ultrafiltration membrane is fixed, the other end is a free end, the center of the membrane wire is provided with a water distribution pipe, the surface of which is uniformly distributed with water distribution holes, and the water distribution pipe is connected with a water inlet. The pollution-resistant ultrafiltration membrane can be backwashed by compressed air, and can be freely vibrated when being cleaned by the compressed air, so that impurities on the surface of the membrane wire can be conveniently shed and discharged. The method can replace a chemical mixing system, a sedimentation tank, a quartz sand filter and an ultrafiltration membrane in the prior art of recycling the sewage of the cooling tower, remove suspended matters and the like in the circulating cooling sewage, reduce the occupied area, and avoid adding coagulant, macromolecular coagulant aid and other chemical agents into the recycling system.
Description
Technical Field
The utility model relates to a circulating cooling sewage recycling system, and belongs to the technical field of sewage treatment.
Background
The application of the circulating cooling water in industrial production is very common, and especially in the industries of semiconductors, electric power, steel, metallurgy and the like, the consumption of the circulating cooling water is very large. In the operation process of the circulating cooling water system, part of water needs to be discharged, and fresh water is supplemented to maintain the concentration multiple and Total Dissolved Solids (TDS) of the system, so that the system is prevented from scaling due to overhigh salt content caused by continuous evaporation and concentration. Because the discharge amount of the circulating cooling water is large, pollutant components in the sewage are not complex, the direct treatment is followed by the discharge, and the waste is quite high, which is unfavorable for saving water resources, so most enterprises can treat and recycle the part of water.
In the prior art, the traditional recycling treatment process comprises the steps of firstly adjusting pH, adding coagulant and coagulant aid, removing suspended matters in sewage through chemical mixing and precipitation, intercepting suspended matters which are difficult to precipitate and remove in water through a quartz sand filter, further removing macromolecular substances through an ultrafiltration membrane, finally entering a reverse osmosis system for desalination treatment, and recycling the reverse osmosis produced water as water replenishing to a cooling circulating water system.
In the prior art, due to the need of adding additional medicament, not only the total soluble solids are additionally introduced, but also the running cost is increased. In addition, the chemical mixing sedimentation system at the front end of the traditional process occupies a larger area. And when the sedimentation effect of the chemical mixing system is poor, larger impact can be caused to the subsequent ultrafiltration unit, and the ultrafiltration membrane is blocked and the system is down when the impact is severe. Moreover, the ultrafiltration membrane in the traditional process adopts cross-flow filtration, so that concentrated water needs to be discharged, a large amount of water is needed for backwashing, and the recovery rate is generally below 90%. Finally, the polymer coagulant aid (PAM) added into the chemical mixing system has the hidden trouble of blocking the RO membrane system.
Disclosure of Invention
The utility model provides a circulating cooling sewage recycling system, which aims to overcome the defects in the prior art, reduce the occupied area and prevent secondary pollution.
The technical solution of the utility model is as follows: the utility model provides a circulative cooling arranges sewage recycling system, its structure includes cooling tower, raw water pond, raw water pump, anti-pollution milipore filter, filtration pond, water feeding pump, security filter, reverse osmosis membrane, the wastewater system that connect gradually through the pipeline, pipe connection first compressed air input device between raw water pump and the anti-pollution milipore filter, pipe connection second compressed air input device between anti-pollution milipore filter and the filtration pond, the water gap that produces of reverse osmosis membrane passes through pipe connection cooling tower. The pollution-resistant ultrafiltration membrane comprises a membrane shell and an end cover arranged at one end of the membrane shell, a water outlet is arranged on the end cover, a water inlet and a lower sewage outlet are arranged at the other end of the membrane shell, membrane wires are arranged in the membrane shell, one end of each membrane wire, which is close to the end cover, is fixed, the other end of each membrane wire is a free end, a water distribution pipe with water distribution holes uniformly distributed on the surface is arranged at the center of each membrane wire, and the water distribution pipes are connected with the water inlet. The pollution-resistant ultrafiltration membrane has a compressed air backwashing function, and can be cleaned by compressed air at regular intervals. One end of the membrane wire in the pollution-resistant ultrafiltration membrane is fixed, the other end is a free end, and the membrane wire can shake freely when being cleaned by compressed air, so that impurities on the surface of the membrane wire can be conveniently removed and discharged. According to the system and the pollution-resistant ultrafiltration membrane structure, the system can replace a chemical mixing system, a sedimentation tank, a quartz sand filter and a pollution-resistant ultrafiltration membrane in the traditional cooling tower sewage recycling process in the prior art, and remove suspended matters and other impurities in the circulating cooling sewage, so that the occupied area is greatly reduced, and meanwhile, the addition of coagulant, macromolecular coagulant aid and other chemical agents to the recycling system is avoided.
The cooling tower is responsible for collecting the sewage discharged by the cooling tower. The raw water pump is responsible for sending sewage into the pollution-resistant ultrafiltration membrane, and the water inlet of pollution-resistant ultrafiltration membrane one end is connected through pipeline specific connection, and the filtering pond passes through the delivery port of the pollution-resistant ultrafiltration membrane other end of pipeline specific connection, and the lower drain of pollution-resistant ultrafiltration membrane one end and the last drain of the other end pass through the pipe connection wastewater system respectively. The filtering water tank is used for temporarily storing the water filtered by the pollution-resistant ultrafiltration membrane so as to be sent into a subsequent system. The water pump is responsible for sending the water in the filtering pond into the cartridge filter. The filter element in the security filter is a micron-sized filter element and is responsible for intercepting micron-sized particles escaping from the pollution-resistant ultrafiltration membrane, thereby protecting the reverse osmosis membrane. The reverse osmosis membrane is responsible for separating out salt in water, and the desalted water is returned to the cooling tower as water supplement.
The utility model has the advantages that: the PAM high polymer coagulant aid has reasonable structural design, can greatly reduce the occupied area of a recycling system, simultaneously avoids adding drugs to introduce extra TDS of a chemical mixing system and easily causes pollution and blockage of a membrane system, and in addition, avoids secondary pollution caused by replacing filter materials in the traditional process. The system stability is increased while the system running cost is reduced. In particular, the method comprises the steps of,
1) The pH is not required to be regulated, coagulant is not required to be added, the quality of the recycled water is better, and the system is more stable to operate;
2) The pretreatment of chemical mixing and precipitation is not needed, and the occupied area is small;
3) The filter material is not required to be replaced, secondary pollution caused by replacement of the filter material is avoided, and the environment is protected;
4) The operation cost is low, the energy is saved, and the system operation is stable;
5) The pollution-resistant ultrafiltration membrane with special design can adopt dead-end filtration, does not need a large amount of water for backwashing, and has high recovery rate of more than 95 percent;
5) The condition that the reverse osmosis membrane is plugged by the polymer coagulant aid is avoided.
Drawings
FIG. 1 is a schematic diagram of the recycling system for recirculated cooling sewage.
In the figure, 1 is a cooling tower, 2 is a raw water tank, 3 is a raw water pump, 4 is a water inlet, 5 is a lower sewage outlet, 6 is a water distribution pipe, 7 is a water distribution hole, 8 is an upper sewage outlet, 9 is a pollution-resistant ultrafiltration membrane, 10 is a membrane shell, 11 is a membrane wire, 12 is an end cover, 13 is a water outlet, 14 is a filtering water tank, 15 is a water supply pump, 16 is a cartridge filter, 17 is a filter core, 18 is a reverse osmosis membrane, 19 is a first compressed air input device, 20 is a second compressed air input device, and 21 is a wastewater system.
Detailed Description
The present utility model will be described in further detail with reference to examples and embodiments.
As shown in fig. 1, the circulating cooling sewage recycling system structurally comprises a cooling tower 1, a raw water pond 2, a raw water pump 3, a pollution-resistant ultrafiltration membrane 9, a filtering water pond 14, a water supply pump 15, a security filter 16, a reverse osmosis membrane 18 and a wastewater system 21 which are sequentially connected through pipelines, wherein a first compressed air input device 19 is connected between the raw water pump 3 and the pollution-resistant ultrafiltration membrane 9 through pipelines, a second compressed air input device 20 is connected between the pollution-resistant ultrafiltration membrane 9 and the filtering water pond 14 through pipelines, and a water outlet of the reverse osmosis membrane 18 is connected with the cooling tower 1 through a pipeline.
The raw water tank 2 is responsible for collecting the sewage discharged from the cooling tower.
The pollution-resistant ultrafiltration membrane 9 comprises a membrane shell 10 and an end cover 12 arranged at one end of the membrane shell 10, a water outlet 13 is arranged on the end cover 12, a water inlet 4 and a lower sewage outlet 5 are arranged at the other end of the membrane shell 10, a membrane wire 11 is arranged in the membrane shell 10, one end of the membrane wire 11 close to the end cover 12 is fixed, the other end is a free end, a water distribution pipe 6 with water distribution holes 7 uniformly distributed on the surface is arranged at the center of the membrane wire 11, and the water distribution pipe 6 is connected with the water inlet 4.
The pollution-resistant ultrafiltration membrane 9 with the special structure can replace a chemical mixing system, a sedimentation tank, a quartz sand filter and an ultrafiltration membrane in the prior art traditional cooling tower sewage recycling process to remove suspended matters and other impurities in the circulating cooling sewage, thereby greatly reducing the occupied area and simultaneously avoiding adding coagulant, polymer coagulant aid and other chemical agents into the recycling system.
The contamination-resistant ultrafiltration membrane 9 has a compressed air backwashing function, and can be cleaned by compressed air at regular intervals.
One end of the membrane wire 11 in the pollution-resistant ultrafiltration membrane 9 is fixed, the other end is a free end, and the free end can shake freely when compressed air is used for cleaning, so that impurities on the surface of the membrane wire 11 can be conveniently removed and discharged.
The filtering pond 14 is responsible for temporarily storing the water filtered by the pollution-resistant ultrafiltration membrane 9 so as to be sent to a subsequent system.
The water feed pump 15 is responsible for feeding the water in the filter basin 14 to the cartridge filter 16.
The filter element 17 in the security filter 16 is a micron-sized filter element and is responsible for intercepting micron-sized particles escaping from the pollution-resistant ultrafiltration membrane 9 so as to protect the reverse osmosis membrane 18.
According to the structure, when the circulating cooling sewage is recycled, the method comprises the following steps:
1) The sewage of the cooling tower 1 is discharged into a raw water tank 2 for collection and temporary storage, and then is sent into a pollution-resistant ultrafiltration membrane 9 through a raw water pump 3;
2) The sewage enters the interior of the pollution-resistant ultrafiltration membrane 9 through the water inlet 4 and is sprayed out through the water distribution holes 7 on the water distribution pipe 6;
3) The water sprayed from the water distribution holes 7 washes the membrane wires 11, permeates the membrane wires 11, finally flows out of the pollution-resistant ultrafiltration membrane 9 from the water outlet 13, and impurities such as suspended matters in the sewage are trapped in the membrane cavity by the membrane;
4) The sewage filtered by the pollution-resistant ultrafiltration membrane 9 enters a filtering water tank 14 for temporary storage, and then is sent into a security filter 16 by a water pump 15;
5) A filter element 17 with micron-sized filtering precision is arranged in the security filter 16 to intercept micron-sized particles escaping from the pollution-resistant ultrafiltration membrane 9, so as to protect the reverse osmosis membrane 18;
6) The sewage filtered by the security filter 16 enters a reverse osmosis membrane 18 for desalination treatment, and the desalted water enters a circulating cooling tower system (cooling tower 1) as water replenishing;
7) Impurities such as soluble salt intercepted by the reverse osmosis membrane 18 are discharged into the wastewater system 21 for treatment along with reverse osmosis concentrated water;
8) After the pollution-resistant ultrafiltration membrane 9 runs for a certain time, air backwashing and pollution discharge are carried out. Firstly, compressed air enters through a water outlet 13, the compressed air reversely blows the membrane wires 11, and pollutants blocked on the filtering holes are blown out and then discharged from a lower sewage outlet 5 along with sewage;
9) Then the pollution-resistant ultrafiltration membrane 9 is filled with water again, the water is sent into the membrane cavity again through the raw water pump 3, then the compressed air after decompression enters from the water inlet 4, and the impurities such as suspended matters attached to the membrane wires 11 are 'shaken off' by the combined stirring of the air and the water;
10 After the suspended substances and other impurities are separated from the membrane wires 11, the suspended substances and other impurities are discharged out of the pollution-resistant ultrafiltration membrane 9 through the lower drain outlet 5 and are sent to the wastewater system 21 for treatment.
The contamination-resistant ultrafiltration membrane 9 consists of a membrane shell 10, an end cap 12 and membrane filaments 11, and after a few years of use the filtration effect is reduced to an unrecoverable level, at which time the end cap 12 can be opened and the membrane filaments 11 can then be replaced.
The above components are all of the prior art, and any model and existing design that can achieve their corresponding functions can be used by those skilled in the art.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.
Claims (4)
1. The utility model provides a circulative cooling arranges sewage recycling system, a serial communication port, including cooling tower (1) that connects gradually through the pipeline, raw water pond (2), raw water pump (3), resistant pollution milipore filter (9), filtering ponds (14), water supply pump (15), security filter (16), reverse osmosis membrane (18), wastewater system (21), pipe connection first compressed air input device (19) between raw water pump (3) and the resistant pollution milipore filter (9), pipe connection second compressed air input device (20) between resistant pollution milipore filter (9) and filtering ponds (14), the mouth of a river of producing of reverse osmosis membrane (18) is through pipe connection cooling tower (1), membrane silk (11) one end in resistant pollution milipore filter (9) is fixed, the other end is the free end.
2. The circulating cooling sewage reuse system according to claim 1, wherein the raw water pump (3) is specifically connected with the water inlet (4) at one end of the pollution-resistant ultrafiltration membrane (9) through a pipeline, the filtering water tank (14) is specifically connected with the water outlet (13) at the other end of the pollution-resistant ultrafiltration membrane (9) through a pipeline, and the lower sewage outlet (5) at one end of the pollution-resistant ultrafiltration membrane (9) and the upper sewage outlet (8) at the other end of the pollution-resistant ultrafiltration membrane are respectively connected with the wastewater system (21) through pipelines.
3. The circulating cooling sewage reuse system according to claim 2, characterized in that the pollution-resistant ultrafiltration membrane (9) comprises a membrane shell (10) and an end cover (12) arranged at one end of the membrane shell (10), the water outlet (13) is arranged on the end cover (12), the water inlet (4) and the lower sewage outlet (5) are arranged at the other end of the membrane shell (10), a membrane wire (11) is arranged in the membrane shell (10), one end, close to the end cover (12), of the membrane wire (11) is fixed, the other end is a free end, a water distribution pipe (6) with water distribution holes (7) uniformly distributed on the surface is arranged at the center of the membrane wire (11), and the water distribution pipe (6) is connected with the water inlet (4).
4. A recirculating cooling sewage reuse system according to claim 3, characterised in that said filter element (17) in said cartridge filter (16) is a micron-sized filter element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223520041.2U CN219031843U (en) | 2022-12-27 | 2022-12-27 | Circulation cooling sewage recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223520041.2U CN219031843U (en) | 2022-12-27 | 2022-12-27 | Circulation cooling sewage recycling system |
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| Publication Number | Publication Date |
|---|---|
| CN219031843U true CN219031843U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223520041.2U Active CN219031843U (en) | 2022-12-27 | 2022-12-27 | Circulation cooling sewage recycling system |
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| CN (1) | CN219031843U (en) |
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- 2022-12-27 CN CN202223520041.2U patent/CN219031843U/en active Active
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