CN210764746U - Adopt washing cigarette waste water retrieval and utilization processing apparatus of STRO device - Google Patents
Adopt washing cigarette waste water retrieval and utilization processing apparatus of STRO device Download PDFInfo
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- CN210764746U CN210764746U CN201921587961.1U CN201921587961U CN210764746U CN 210764746 U CN210764746 U CN 210764746U CN 201921587961 U CN201921587961 U CN 201921587961U CN 210764746 U CN210764746 U CN 210764746U
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Abstract
The utility model discloses an adopt washing cigarette waste water retrieval and utilization processing apparatus of STRO device, it contains: the device comprises a heat exchanger, a wastewater adjusting tank, a first reaction tank, a first sedimentation tank, a second reaction tank, a microfiltration concentration tank, a tubular microfiltration device, a pH neutralization tank, a microfiltration water production tank, an STRO device, a STRO water production tank, an RO device and a reuse water tank which are sequentially connected with the smoke washing wastewater; the wastewater in the microfiltration concentration tank is conveyed to a tubular microfiltration device through a circulating pump for solid-liquid separation, the wastewater circularly flows in the tubular microfiltration device, the water produced by the filter membrane enters a next-stage unit, and the concentrated water flows back into the microfiltration concentration tank; the utility model discloses a combined process of one-level coagulating sedimentation + second grade softening + tubular micro-filtration membrane filtration + STRO high pressure membrane system + RO membrane system gets rid of pollutants in the waste water, handles back quality of water and reaches the process water standard and recycles in production, still has that area is little, the quality of effluent water is good and stable, to advantages such as environmental pollution-free, water economy resource, degree of automation height.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment, concretely relates to can extensively be applicable to the processing and the recycle of the cigarette washing waste water that trade wet flue gas desulfurization such as waste incineration power plant produced, especially indicate a cigarette washing waste water retrieval and utilization processing apparatus who adopts the STRO device.
Background
The smoke washing wastewater (deacidification wastewater) refers to smoke washing wastewater generated in the smoke purification (wet desulphurization) process of an incinerator in industries such as a waste incineration power plant and the like.
With the improvement of urbanization level and industrialization degree, water resource shortage and water pollution aggravation become global problems to be solved urgently, and the water resource shortage becomes an important restriction factor for economic and social development in China. The regeneration and reuse of industrial waste water are increasingly emphasized, and the national relevant departments restrict industrial water year by year so as to encourage the reuse and circulation. In the field of industrial wastewater recycling, ultrafiltration, microfiltration, reverse osmosis, nanofiltration technologies and combination technologies thereof are gradually popularized and applied in China due to the organic combination of high-efficiency turbidity removal and desalting capabilities and the advantages of small occupied area, less environmental pollution, high automation degree and wide application range.
The smoke washing wastewater component generated in the purification process of the incinerator flue gas of the waste incineration power plant is very complex, mainly contains pollutants such as ammonia nitrogen, HCl, HF, SOx, heavy metals, suspended matters, chlorides and salinity, and has large fluctuation of water quantity and water quality, so that if the smoke washing wastewater component is not thoroughly treated, the smoke washing wastewater component can cause serious influence on the surrounding environment. At present, with the improvement of the environmental protection requirement, the existing process generally adopts a single precipitation method or a single filtration method to simply treat the smoke washing wastewater, the quality of treated effluent water often cannot reach a new discharge standard, and particularly, ammonia nitrogen, organic matters and salt cannot reach the standard.
In order to save energy, reduce emission and save water resources, the utility model integrates the recycling treatment scheme of a set of system aiming at the characteristics and the current treatment situation of the smoke washing wastewater, and leads the treated water quality to reach the water supplementing standard of an open type circulating cooling water system for reusing in the water supplementing of a cooling tower through the process of combining the physicochemical pretreatment and the membrane filtration; the concentrated water is reused in a slag remover or an ash fly chelating system. Not only avoids the discharge of pollutants, but also saves water resources.
With the utility model discloses closest technical scheme: a smoke washing wastewater recycling treatment system comprises a cooler, an adjusting tank, a reaction tank, a sedimentation tank, a neutralization tank, a filtering device, a clear water tank, an ultrafiltration device, a reverse osmosis device and a recycling water tank, wherein the sedimentation tank, the filtering device, the ultrafiltration device and the reverse osmosis device are respectively connected with the adjusting tank in a return mode, the clear water tank is respectively additionally provided with a pipeline which is connected with the filtering device and the ultrafiltration device to form a back flush pipeline, the reaction tank and the sedimentation tank are sequentially connected according to a first reaction tank, a first sedimentation tank, a second reaction tank and a second sedimentation tank, the filtering device comprises a quartz sand filter and an active carbon filter, an ultrafiltration water production tank is arranged between the ultrafiltration device and the reverse osmosis device, pollutants are removed through a process combining physicochemical pretreatment and membrane filtration, and the treated water quality reaches the production water standard and is recycled for production.
The prior art has the following defects: because the prior art only uses a single flocculation precipitation and filtration process, and the types of added medicaments are less, the treatment method has a good removing effect on partial pollutants in the smoke washing wastewater, and as the emission standard is improved, a part of pollutants cannot be removed (such as chloride, sulfate, TDS and the like), and a part of pollutants cannot be removed (such as COD, ammonia nitrogen, total nitrogen and the like). In addition, after the smoke washing wastewater is recycled for multiple times, the salinity and hardness in the water are higher and higher, and finally, the smoke washing wastewater can cause crystallization and scaling of a washing tower and cannot be recycled in an alkaline washing tower.
SUMMERY OF THE UTILITY MODEL
The shortcoming that exists to current smoke washing effluent treatment plant, the utility model discloses a key point lies in to smoke washing effluent water quality of water, with the reasonable integration of current technology together, through the technological structure of "one-level coagulating sedimentation + second grade softening + tubular micro-filtration membrane filtration + STRO high pressure membrane system + RO membrane system", makes the quality of water after handling reach "municipal sewage recycles-industrial water quality of water" (GB/T19923-2005) open-type recirculated cooling water system moisturizing standard and be used for the cooling tower moisturizing, has both avoided the emission of pollutant, has practiced thrift the water resource again.
The technical means adopted by the utility model are as follows.
A flue gas washing wastewater recycling treatment device adopting an STRO device comprises: the device comprises a heat exchanger, a wastewater adjusting tank, a first reaction tank, a first sedimentation tank, a second reaction tank, a microfiltration concentration tank, a tubular microfiltration device, a pH neutralization tank, a microfiltration product tank, an STRO device, a STRO product tank, an RO device and a reuse water tank which are sequentially connected with the smoke washing wastewater.
Wherein, be equipped with the circulating line in addition through the circulating pump between concentrated pond of microfiltration and the tubular microfiltration device, waste water carries to the tubular microfiltration device through the circulating pump and carries out solid-liquid separation in the concentrated pond of microfiltration, and waste water is at tubular microfiltration device inner loop flow, and the filter membrane is produced water and is got into subordinate unit, and dense water flows back to in the concentrated pond of microfiltration.
Furthermore, a bypass pipeline is additionally arranged between the outlet of the upper unit of the heat exchanger and the outlet of the heat exchanger.
Furthermore, the first sedimentation tank and the microfiltration concentration tank are connected with the wastewater adjusting tank through the sludge concentration tank.
Further, the sludge concentration tank is also connected with a sludge storage tank and a sludge dewatering machine in sequence, and filtrate in the sludge dewatering machine flows into the wastewater adjusting tank after passing through the water collecting tank.
Furthermore, the STRO device is additionally provided with a pipeline connected with a concentrated water tank.
Furthermore, the RO device is additionally provided with a pipeline which is connected with a microfiltration production water tank in a return way.
Furthermore, a basket filter is arranged in front of the tubular microfiltration device.
Further, an aeration device is arranged in the wastewater adjusting tank.
According to the above technical means, the technical effects of the present invention are as follows.
(1) And the smoke washing wastewater is pretreated by a cooling system, a chemical reaction system, a precipitation system, a tubular microfiltration membrane system, an STRO high-pressure membrane system and an RO membrane system, most pollutants are removed, and the water quality reaches the water replenishing standard of an open circulating cooling water system in the water quality of municipal sewage recycling-industrial water (GB/T19923-2005).
(2) The pretreated smoke washing wastewater sequentially passes through the tubular microfiltration membrane device, the STRO high-pressure membrane system and the RO membrane system, the removal rate of one type of pollutants in the water can reach more than 99.9 percent, the removal rate of the total salt content can reach more than 99.8 percent, the removal rate of other pollutants such as ammonia nitrogen, COD (chemical oxygen demand) and the like can stably reach more than 99 percent, the recovery rate of the wastewater can reach more than 60 percent, and the quality of the effluent can reach the recycling standard.
(3) The device has the advantages of small floor area, good and stable effluent quality, high recovery rate, almost no pollution to the environment, water resource saving, high automation degree and the like.
Drawings
Fig. 1 is a schematic view of the flow structure of the present invention.
Detailed Description
Referring to fig. 1, the flow structure of the present invention is schematically illustrated, and as shown in the figure, each component of the device for recycling and treating flue gas washing wastewater using STRO device of the present invention is a mature device or apparatus. Which comprises the following steps: the device comprises a heat exchanger 1, a waste water adjusting tank 2, a first reaction tank 31, a first sedimentation tank 4, a second reaction tank 32, a microfiltration concentration tank 51, a tubular microfiltration device 52, a pH neutralization tank 6, a microfiltration water production tank 7, an STRO device 8, a STRO water production tank 9, an RO device 10 and a reuse water tank 11 which are sequentially connected with the smoke washing waste water.
Wherein, be equipped with the circulating line in addition through the circulating pump between microfiltration concentration tank 51 and the tubular microfiltration device 52, waste water passes through the circulating pump in the microfiltration concentration tank 51 and delivers to tubular microfiltration device 52 and carries out solid-liquid separation, and waste water is at tubular microfiltration device 52 internal loop flow, and the filter membrane is produced water and is got into the subordinate unit, and dense water flows back to in the microfiltration concentration tank 51.
Furthermore, a bypass pipeline is additionally arranged between the outlet of the upper unit of the heat exchanger 1 and the outlet of the heat exchanger 1.
Further, the first sedimentation tank 4 and the microfiltration concentration tank 51 are connected back to the wastewater adjusting tank 2 through the sludge concentration tank 101.
Further, the sludge concentration tank 101 is connected with a sludge storage tank 102 and a sludge dewatering machine 103 in sequence, and filtrate in the sludge dewatering machine 103 flows into the wastewater adjusting tank 2 after passing through a water collecting tank 104.
Furthermore, the STRO device 8 is additionally provided with a pipeline connected with the concentrated water tank 12.
Furthermore, the RO device 10 is additionally provided with a pipeline connected back to the microfiltration production water tank 7.
Further, in order to protect the filter membrane from damage, a basket filter (not shown) is disposed in front of the tubular microfiltration device 52.
Further, an aeration device (not shown) is provided in the wastewater adjusting tank 2 for oxidizing the reducing substances and for stirring.
The utility model discloses when the in-service use, wash the cigarette waste water and collect the back through the factory, the higher waste water of some temperature gets into heat exchanger 1 and utilizes recirculated cooling water to cool down, all the other waste water direct flow through bypass pipeline and with the waste water after the heat transfer mix the back pump sending to waste water adjusting pool 2.
An aeration device is arranged in the wastewater adjusting tank 2 and is used for oxidizing reducing substances and stirring the reducing substances, and meanwhile, the wastewater is homogenized and metered; and then pumping the wastewater in the wastewater adjusting tank 2 to a first reaction tank 31 (namely a primary reaction tank), adding liquid caustic soda, a chelating agent, a coagulant and a coagulant aid into the first reaction tank 31, carrying out chemical reaction on the reagents and most heavy metal ions in the smoke washing wastewater to generate precipitates, and then collecting the precipitates after entering a first sedimentation tank 4 (namely a primary sedimentation tank). The type and amount of the agent to be administered are those skilled in the art and can be freely selected according to the wastewater condition.
The smoke washing wastewater overflows into a second reaction tank 32 (namely a secondary reaction tank) after being settled for continuous treatment, liquid caustic soda, a magnesium agent, sodium carbonate and a coagulant are sequentially added into the second reaction tank 32 to remove most of silicon, calcium and magnesium hardness and the like, and then the smoke washing wastewater enters a microfiltration concentration tank 51 and a tubular microfiltration device 52 for solid-liquid separation. The type and amount of the agent to be administered are those skilled in the art and can be freely selected according to the wastewater condition.
In order to further control the water quality turbidity of the smoke washing wastewater before entering the reverse osmosis membrane system, a tubular microfiltration device 52 (internally provided with a tubular microfiltration membrane) is adopted for filtration treatment; the wastewater in the microfiltration concentration tank 51 is conveyed to a tubular microfiltration membrane by a circulating pump for solid-liquid separation; wastewater circularly flows in the tubular microfiltration device 52, water produced by the filter membrane enters a lower unit, concentrated water flows back to the microfiltration concentration tank 51, and sludge is discharged when the sludge concentration in the microfiltration concentration tank 51 reaches the design upper limit value. Meanwhile, a basket filter is disposed in front of the tubular microfiltration device 52 for filtering out hard particles and preventing the filter membrane from being damaged.
The cigarette washing waste water filtered through tubular microfiltration device 52 flows into in the pH neutralization pond 6, adds the medicine control through pH on-line monitoring detector or other detection device, the utility model discloses in the neutralizing agent who adds be hydrochloric acid, waste water flow through behind the pH value that accords with the technological condition behind the microfiltration product pond 7 into STRO device 8 (be STRO high pressure membrane system promptly).
After the smoke washing wastewater is filtered by the STRO device 8, the concentrated water enters the concentrated water tank 12 for recycling and can be recycled to a slag remover or an ash flying chelating system; the STRO produced water enters a STRO water producing pool 9 and then flows into an RO device 10 (namely an RO membrane system) through an RO water feeding pump for deep desalination; wherein, the water produced by the RO membrane system enters a reuse water tank 11 for reuse and is reused for replenishing water in the circulating cooling tower; the RO concentrated water flows back to the microfiltration production tank 7, so that the cyclic utilization of the smoke washing wastewater is realized.
Further, the sludge in the sludge storage tank 102 is treated by the sludge dewatering machine 103 to generate sludge to be transported outside, and the filter-pressing clear liquid is returned to the smoke-washing wastewater adjusting tank 104.
In addition, the sludge in the first sedimentation tank 4 and the microfiltration concentration tank 51 is collected and then sent to the sludge concentration tank 51 for concentration, the concentrated sludge is lifted to the sludge storage tank 102 for temporary storage, the sludge in the sludge storage tank 102 is periodically pumped to the sludge dewatering machine 103 for sludge dewatering, the dewatered dry sludge is subjected to subsequent treatment, such as sludge outward transportation treatment, and the filter pressing clear liquid flows back to the wastewater adjusting tank 2 for circular treatment after passing through the water collecting tank 104.
The utility model discloses to the quality of water characteristics of washing cigarette waste water, put together current technology rationally, realize washing the retrieval and utilization of cigarette waste water through the technology of "one-level coagulation reaction precipitation + second grade is softened + tubular micro-filtration membrane filtration + STRO high pressure membrane system + RO membrane system", the one class pollutant removal rate in this technology aquatic can reach more than 99.9%, the removal rate of total salt content can reach more than 99.8%, the removal rate of other pollutants such as ammonia nitrogen, COD can stably reach more than 99%, the waste water recovery rate can reach more than 60%, and the play water quality of water can reach the retrieval and utilization standard; meanwhile, the process flow equipment has the advantages of small occupied area, good and stable effluent quality, high recovery rate, almost no pollution to the environment, water resource saving, high automation degree and the like, and is worthy of wide popularization.
Claims (8)
1. A flue gas washing wastewater recycling treatment device adopting an STRO device is characterized by comprising:
the device comprises a heat exchanger, a wastewater adjusting tank, a first reaction tank, a first sedimentation tank, a second reaction tank, a microfiltration concentration tank, a tubular microfiltration device, a pH neutralization tank, a microfiltration water production tank, an STRO device, a STRO water production tank, an RO device and a reuse water tank which are sequentially connected with the smoke washing wastewater;
wherein, be equipped with the circulating line in addition through the circulating pump between concentrated pond of microfiltration and the tubular microfiltration device, waste water carries to the tubular microfiltration device through the circulating pump and carries out solid-liquid separation in the concentrated pond of microfiltration, and waste water is at tubular microfiltration device inner loop flow, and the filter membrane is produced water and is got into subordinate unit, and dense water flows back to in the concentrated pond of microfiltration.
2. The device for recycling and treating the smoke-washing wastewater by using the STRO device as claimed in claim 1, wherein a bypass pipeline is additionally arranged between the outlet of the upper unit of the heat exchanger and the outlet of the heat exchanger.
3. The recycling treatment apparatus for flue washing wastewater using STRO device as claimed in claim 1, wherein the first sedimentation tank and the microfiltration concentration tank are connected back to the wastewater conditioning tank through the sludge concentration tank.
4. The recycling treatment device for smoke-washing wastewater using STRO device as claimed in claim 3, wherein said sludge concentration tank is further connected with a sludge storage tank and a sludge dewatering machine in sequence, and the filtrate in said sludge dewatering machine flows into the wastewater adjusting tank through the water collecting tank.
5. The device for recycling and treating the smoke washing wastewater by using the STRO device as claimed in claim 1, wherein the STRO device is additionally provided with a pipeline connected with a concentrated water tank.
6. The device of claim 1, wherein the RO unit is additionally provided with a pipe connected back to the microfiltration product tank.
7. The device for recycling and treating the smoke washing wastewater by using the STRO device as claimed in any one of claims 1 to 6, wherein a basket filter is arranged in front of the tubular microfiltration device.
8. The apparatus for recycling and treating washing fume wastewater using STRO device as claimed in any one of claims 1 to 6, wherein an aeration device is provided in the wastewater conditioning tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921587961.1U CN210764746U (en) | 2019-09-23 | 2019-09-23 | Adopt washing cigarette waste water retrieval and utilization processing apparatus of STRO device |
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| CN201921587961.1U CN210764746U (en) | 2019-09-23 | 2019-09-23 | Adopt washing cigarette waste water retrieval and utilization processing apparatus of STRO device |
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| CN210764746U true CN210764746U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510780A (en) * | 2019-09-23 | 2019-11-29 | 上海双昊环保科技有限公司 | It is a kind of that cigarette waste water recycling processing unit and method are washed using STRO device |
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2019
- 2019-09-23 CN CN201921587961.1U patent/CN210764746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510780A (en) * | 2019-09-23 | 2019-11-29 | 上海双昊环保科技有限公司 | It is a kind of that cigarette waste water recycling processing unit and method are washed using STRO device |
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