CN210711054U - Wastewater treatment device adopting tubular membrane - Google Patents
Wastewater treatment device adopting tubular membrane Download PDFInfo
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- CN210711054U CN210711054U CN201921408787.XU CN201921408787U CN210711054U CN 210711054 U CN210711054 U CN 210711054U CN 201921408787 U CN201921408787 U CN 201921408787U CN 210711054 U CN210711054 U CN 210711054U
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Abstract
The utility model discloses a wastewater treatment device adopting a tubular membrane, which comprises a concentrated water tank for adjusting pH by adding alkali, a tubular membrane component, a water production tank, a raw water pipeline and a water production pipeline; the waste water is conveyed to a concentrated water tank through a waste water collecting pipeline, the concentrated water tank is communicated to a tubular membrane component through a raw water pipeline, a circulating pump is installed on the raw water pipeline, the tubular membrane component comprises a water production outlet, the water production outlet is communicated to a water production tank through a water production pipeline, a water suction pump is arranged on the water production pipeline and close to the tubular membrane component, and the circulating pump and the water suction pump are matched for use and act on the tubular membrane component; a back washing component for cleaning the tubular membrane component is also arranged on the water production pipeline in parallel; the tubular membrane component is also provided with a backflow port, the backflow port is connected with a backflow pipeline, and the far end of the backflow pipeline extends to the concentration water tank to form forced concentration circulation. The device saves power consumption, can reduce the running cost of device.
Description
Technical Field
The utility model belongs to the sewage treatment field, in particular to a wastewater treatment device.
Background
The water environment mainly comprises a surface water environment and a groundwater environment. Surface water environments include rivers, lakes, reservoirs, oceans, ponds, marshes, glaciers, and the like, and groundwater environments include spring water, shallow groundwater, deep groundwater, and the like. The water environment is one of the basic elements constituting the environment, is an important place for the survival and development of the human society and is also the field which is most seriously interfered and damaged by human beings. Pollution and destruction of the water environment have become one of the major environmental problems in the world today, and thus certain discharge standards are also set for the discharge of wastewater.
The wastewater treatment is to treat the wastewater by physical, chemical and biological methods, purify the wastewater and reduce pollution so as to achieve the purposes of wastewater recovery and reuse and fully utilize water resources. The wastewater treatment can be generally divided into three stages, wherein the primary treatment mainly adopts a physical method and mainly removes solid pollutants in a suspension state from the wastewater; the secondary treatment mainly removes organic pollutants in the wastewater to a great extent; the third-level treatment task is to further treat pollutants which cannot be removed by the second-level treatment, the third-level treatment and the high-level treatment are synonymous terms but are not completely consistent, the high-level treatment usually aims at waste water recovery and reuse, the cost is high, the management is complex, and water resources can be fully utilized. At present, the process for treating wastewater (such as nickel-containing wastewater) is complex, the process steps are complex, the number of equipment and devices involved in the whole treatment process is large, each process has to be operated stably to ensure the stability of the whole wastewater treatment, and the labor cost, the time cost and the space position are greatly consumed.
Patent CN201620022150.7 discloses a chemical nickel wastewater treatment system, which comprises a screen filter, an adjusting tank, a first PH adjusting tower, a decomplexing tank, a second PH adjusting tower, a coagulation tank, a flocculation tank, and a filter press; the liquid inlet of the screen filter is connected with a wastewater pool through a liquid inlet pipe; the screen filter is connected into the regulating reservoir through a pipeline; the adjusting tank is connected to the first PH adjusting tower through a liquid inlet pump; a liquid inlet at the top of the first PH adjusting tower is connected to a liquid outlet of the acid liquid storage tank through a pipeline, and a liquid outlet valve is arranged on the pipeline; a liquid outlet of the first PH adjusting tower is connected to the vein breaking pool through a pipeline; the top of the vein breaking tank is connected with an aerator through an air inlet pipe, and is connected with a hydrogen peroxide storage tank through a pipeline provided with a liquid outlet valve; the liquid outlet of the vein breaking pool is connected with a second PH adjusting tower through a pipeline. Above-mentioned utility model carries out chemical treatment to nickeliferous waste water through a plurality of processing links, will handle up to standard waste water at last and discharge, and the mud of production squeezes, dewaters, becomes the mud cake fixed point and stacks, regularly outward transport and withdraw, but the process structure of above-mentioned patent is complicated, and is with high costs.
Disclosure of Invention
In order to solve the problem, the utility model provides an adopt effluent treatment plant of tubular membrane, the device is applicable to nickeliferous/copper waste water, need not through the processing of materialization devices such as coagulation, flocculation, sediment, can produce the mud cake that has use value, no secondary pollution can realize discharge to reach standard to follow-up equipment retrieval and utilization is given to the output water purification, and sets up the suction pump through the product water pipe department at the tubular membrane, makes the circulating pump that sets up in the inlet tube department of tubular membrane can alleviate the burden, and then can reduce cost.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a wastewater treatment device adopting a tubular membrane comprises a concentration water tank for adjusting pH by adding alkali, a tubular membrane component, a water production tank, a raw water pipeline and a water production pipeline; the waste water is conveyed to the concentrated water tank through a waste water collecting pipeline, the concentrated water tank is communicated to a tubular membrane assembly through a raw water pipeline, a circulating pump is installed on the raw water pipeline, the tubular membrane assembly comprises a water production outlet, the water production outlet is communicated to the water production tank through a water production pipeline, a water suction pump is arranged on the water production pipeline and close to the tubular membrane assembly, and the water suction pump and the circulating pump are matched for use and act on the tubular membrane assembly; a back washing component for cleaning the tubular membrane component is also arranged on the water production pipeline in parallel; the tubular membrane component is also provided with a backflow port, the backflow port is connected with a backflow pipeline, and the far end of the backflow pipeline extends to the concentrated water tank to form forced circulation.
In the utility model, the waste water (mainly containing nickel/copper) is treated by alkali in the concentrated water tank to adjust the pH value, the alkaline ions such as nickel ions and copper ions in the waste water are primarily concentrated in the concentrated water tank, the pretreated waste water is conveyed into the tubular membrane component through the circulating pump, and the compounds such as Ni (OH)2 and Cu (OH)2 in the waste water are intercepted by utilizing the selectivity of the membrane, so that the concentrated waste water containing nickel/copper flows back to the concentrated water tank through the return line, and the burden of the circulating pump can be lightened due to the action of the water pump; the circulating pump is a high-power pump, can generate 5-8 times of flow velocity and form forced circulation, and the water suction pump is arranged to apply pulling force on the water production outlet, so that negative pressure is formed inside the tubular membrane component, the pressure difference between the wastewater inlet and the water production outlet is increased, the circulating pump can convey wastewater into the tubular membrane component by using a small driving force, the purified water yield of the water production outlet can also be increased, the power consumption is saved, and the operation cost of the whole device can be further reduced; compared with a water pump which is not increased, the energy consumption difference of 5-8 times can be generated; in addition, the purified water which is obtained by the treatment of the tubular membrane component and does not contain metal compounds such as nickel, copper and the like flows into the water production tank from the water production outlet, and does not need to be treated by physical and chemical devices such as coagulation, flocculation, precipitation and the like, and a small amount of generated sludge can become valuable resources for reasonable use without secondary pollution.
Specifically, a sludge outlet is formed in the bottom of the concentrated water tank, a sludge pipeline is connected to the sludge outlet, the concentrated water tank is communicated to a pressure filter through the sludge pipeline, a pneumatic diaphragm pump is arranged on the sludge pipeline, a pressure filtrate outlet is formed in the pressure filter, a pressure filtrate recovery pipeline is connected to the pressure filtrate outlet, and the pressure filter is communicated to the concentrated water tank through the pressure filtrate recovery pipeline. The sludge (mainly containing Ni (OH)2, Cu (OH)2 and the like) at the bottom of the concentrated water tank is conveyed into a filter press by a pneumatic diaphragm pump, and the sludge cake obtained after the treatment of the filter press is used as a resource for related mechanisms to carry out legal treatment, wherein the filter press can adopt a plate-and-frame filter press generally, and can also adopt other filter presses.
Specifically, the backwashing component comprises an air compressor, a backwashing valve, a backwashing pipeline and a backwashing column; the air compressor is communicated with the backwashing columns through the backwashing pipeline, the backwashing valve is arranged on the backwashing pipeline and is only opened during backwashing, the backwashing column is connected on the water production pipeline, a water production valve is further arranged on the water production pipeline, the water production valve is located between the water suction pump and the backwashing columns, and a compressed air inlet is formed in the air compressor. The device runs for a period of time (can be set), the circulating pump is stopped, the backwashing valve is opened, air is compressed by the air compressor and enters the backwashing assembly, then clean water is pushed to reach the tubular membrane assembly through the backwashing column, the water production pipeline and the water production valve in sequence, the tubular membrane assembly is cleaned, and the cleaned backwashing water flows through the return pipeline to the concentration water tank. Wherein, the backwashing valve can be an electric valve.
Specifically, the device also comprises a first medicine washing water tank and a second medicine washing water tank, and both the first medicine washing water tank and the second medicine washing water tank are filled with medicine washing agents; the return pipeline is connected in parallel with a concentrated water main pipeline, the concentrated water main pipeline is respectively connected in parallel with a first concentrated water pipeline and a second concentrated water pipeline, and the first concentrated water pipeline and the second concentrated water pipeline are respectively communicated to the first medicine washing water tank and the second medicine washing water tank; the first concentrated water pipeline and the second concentrated water pipeline are respectively provided with a first concentrated water valve and a second concentrated water valve, and the first concentrated water valve and the second concentrated water valve are both opened only during drug washing and are switched to be used; the tubular membrane component in the device can be washed by using chemical washing to wash away residual metal compounds on the tubular membrane component, the chemical washing agents in the first chemical washing water tank and the second chemical washing water tank are usually added with acid and alkali, and the acid washing and the alkali washing are not used simultaneously.
A cleaning water pipeline is also connected in parallel on the water production pipeline and is sequentially communicated to the first chemical washing water tank and the second chemical washing water tank; a drug washing water production valve is arranged on the cleaning water pipeline, is opened only during drug washing and is mutually switched with the water production valve;
the device also comprises a drug washing water inlet pipeline, wherein water outlets of the first drug washing water tank and the second drug washing water tank are respectively connected in parallel on the drug washing water inlet pipeline through pipelines, the first drug washing water tank and the second drug washing water tank are connected onto a raw water pipeline through the drug washing water inlet pipeline, and a cleaning pump is arranged on the drug washing water inlet pipeline; and the cleaning pump conveys the chemical washing water in the first chemical washing water tank or the chemical washing water in the second chemical washing water tank into the tubular membrane component to clean the tubular membrane component.
The water outlet of the first medicine washing water tank and the water outlet of the second medicine washing water tank are respectively provided with a first medicine washing water outlet valve and a second medicine washing water outlet valve, and the first medicine washing water outlet valve and the second medicine washing water outlet valve are switched to be used, namely, the first medicine washing water outlet valve and the second medicine washing water outlet valve are opened only when medicine is washed, but the first medicine washing water outlet valve and the second medicine washing water outlet valve are not opened simultaneously.
From the tubular membrane component, the concentrated water (containing nickel/copper) flowing out through the backflow port respectively enters the first medicine cleaning water tank and the second medicine washing water tank through the medicine washing main pipeline, is mixed with the medicine washing agent in the medicine washing water tank, and is conveyed into the tubular membrane component through the cleaning pump and the medicine washing water inlet pipeline to form the circulating medicine washing.
Wherein the medicinal lotion is alkali, acid or oxidant.
Specifically, a medicine washing water inlet valve is arranged on the medicine washing water inlet pipeline; and a medicine washing check valve is arranged between the medicine washing water inlet valve and the cleaning pump and close to the medicine washing water inlet valve. The medicine washing water inlet valve is opened during circulating medicine washing, and the medicine washing check valve can prevent medicine washing water from flowing backwards, so that the cleaning pump is protected.
Specifically, the water production pipeline is further communicated with an emptying pipeline in parallel, an emptying valve which is opened only during air exhaust is arranged on the emptying pipeline, and the far end of the emptying pipeline extends to the water production tank. When the device starts to operate, the emptying valve is opened first, then the circulating pump is started slowly to exhaust, the emptying valve is closed after the air is exhausted for a period of time, such as 30 seconds, then the water production valve is opened, and the water production valve is closed after the medicine washing; venting is also typically performed after each cleaning of the tubular membrane module.
Specifically, a purified water production pipeline is further connected to the backwashing pipeline in parallel, the far end of the purified water production pipeline extends to the water production tank, and a purified water production valve which is closed during backwashing is arranged on the purified water production pipeline. When normal water is produced, the backwash valve is closed, the water production valve and the purified water production valve are opened, the purified water flowing out of the water production port flows into the water production tank through the water suction pump, the water production pipeline, the water production valve, the backwash column and the purified water production valve in sequence, and the purified water production valve is closed when backwashing is carried out, so that air is prevented from flowing into the water production tank from the purified water production pipeline.
Specifically, a concentrated water regulating valve is arranged on the return pipeline and used for controlling the flow of concentrated water, and the concentrated water regulating valve needs to be closed when the medicine washing is carried out.
The utility model has the advantages that:
compared with the prior art, the utility model provides an adopt effluent treatment plant of tubular membrane, the device is applicable to nickeliferous copper waste water, need not through coagulating, flocculation, the processing of materialization devices such as sediment, can produce the mud cake that has use value, no secondary pollution, can realize discharge to reach standard, and follow-up equipment retrieval and utilization is given to the output water purification, and set up the suction pump through the product water pipe department at the tubular membrane, make the circulating pump that sets up in the inlet tube department of tubular membrane can alleviate the burden, 5-8 times's energy consumption has been reduced, and then can reduce cost.
Drawings
FIG. 1 is a schematic structural view of a wastewater treatment apparatus using a tubular membrane according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical scheme of the utility model as follows:
referring to fig. 1, the wastewater treatment device using tubular membranes according to the present invention comprises a concentrated water tank 1 for adjusting pH by adding alkali, a tubular membrane module 2, a water production tank 3, a raw water pipeline and a water production pipeline; the wastewater is conveyed to a concentrated water tank 1 through a wastewater collecting pipeline, the concentrated water tank 1 is communicated to a tubular membrane component 2 through a raw water pipeline, a circulating pump 4 is installed on the raw water pipeline, the tubular membrane component 2 comprises a water production outlet, the water production outlet is communicated to a water production tank 3 through a water production pipeline, a water suction pump 5 is arranged on the water production pipeline and close to the tubular membrane component 2, and the water suction pump 5 is matched with the circulating pump 4 for use and acts on the tubular membrane component 2; a back washing component 6 for cleaning the tubular membrane component 2 is also arranged on the water production pipeline in parallel; the tubular membrane component 2 is also provided with a return port, the return port is connected with a return pipeline, and the far end of the return pipeline extends to the concentrated water tank 1 to form forced circulation.
In the utility model, the waste water (mainly containing nickel/copper) is treated by alkali in the concentrated water tank 1 to adjust the pH value, the alkaline ions such as nickel ions and copper ions in the waste water are primarily concentrated in the concentrated water tank, the pretreated waste water is conveyed into the tubular membrane component 2 through the circulating pump 4, and the compounds such as Ni (OH)2 and Cu (OH)2 in the waste water are intercepted by utilizing the selectivity of the membrane, so that the concentrated waste water containing nickel/copper flows back to the concentrated water tank 1 through the return line, and the burden of the circulating pump 4 can be lightened due to the action of the water suction pump 5; the circulating pump 4 is a high-power pump, can generate 5-8 times of flow velocity and form forced circulation, and the water suction pump 5 is arranged to apply pulling force on the water production outlet, so that negative pressure is formed inside the tubular membrane component 2, the pressure difference between the wastewater inlet and the water production outlet is increased, the circulating pump 4 can convey wastewater into the tubular membrane component 2 by using a small driving force, the purified water yield of the water production outlet can also be increased, the power consumption is saved, and the operation cost of the whole device can be further reduced; compared with the method without adding the water pump 5, the method can generate 5-8 times of energy consumption difference; in addition, the purified water which is obtained by the treatment of the tubular membrane component 2 and does not contain metal compounds such as nickel, copper and the like flows into the water production tank 3 from the water production outlet, and the treatment of physical and chemical devices such as coagulation, flocculation, precipitation and the like is not needed, so that a small amount of generated sludge can become valuable resources for reasonable use, and no secondary pollution is caused.
In this embodiment, the bottom of the concentrated water tank 1 is provided with a sludge outlet, the sludge outlet is connected with a sludge pipeline, the concentrated water tank 1 is communicated to the pressure filter 7 through the sludge pipeline, the sludge pipeline is provided with a pneumatic diaphragm pump 71, the pressure filter 7 is provided with a pressure filtrate outlet, the pressure filtrate outlet is connected with a pressure filtrate recovery pipeline, and the pressure filter 7 is communicated to the concentrated water tank 1 through the pressure filtrate recovery pipeline. The pneumatic diaphragm pump 71 conveys sludge (mainly containing Ni (OH)2, Cu (OH)2 and the like) at the bottom of the concentrated water tank 1 to a filter press, sludge cakes obtained after treatment by the filter press 7 are used as resources for related institutions to legal treatment, and the filter press 7 usually adopts a plate-and-frame filter press and can also be other filter presses.
In this embodiment, backwash assembly 6 comprises air compressor 61, backwash valve 62, backwash line and backwash column 63; air compressor 61 passes through the backwash pipeline and communicates with backwash column 63, and backwash valve 62 sets up on the backwash pipeline and only opens when the backwash, and backwash column 63 connects on producing the water pipeline, still is equipped with on producing the water pipeline and produces water valve V1, produces water valve V1 and is located between suction pump 5 and backwash column 63, is equipped with compressed air import on air compressor 61. The device is operated for a period of time (can be set), the circulating pump 4 is stopped, the backwashing valve V1 is opened, air is compressed by the air compressor 61 and enters the backwashing assembly 6, then purified water is pushed to sequentially pass through the backwashing column 63, the water production valve V1, the water production pipeline and the water suction pump 5 and reach the tubular membrane assembly 2, the tubular membrane assembly 2 is cleaned, and the cleaned backwashing water flows through the return pipeline to the concentrated water tank 1. Wherein the backwash valve 62 may be an electrically operated valve.
In this embodiment, the apparatus further comprises a first drug washing water tank 81 and a second drug washing water tank 82, both of which are filled with a drug washing agent; the return pipeline is connected in parallel with a concentrated water main pipeline, the concentrated water main pipeline is respectively connected in parallel with a first concentrated water pipeline and a second concentrated water pipeline, and the first concentrated water pipeline and the second concentrated water pipeline are respectively communicated with the first drug washing water tank 81 and the second drug washing water tank 82; the first concentrated water pipeline and the second concentrated water pipeline are respectively provided with a first concentrated water valve V2 and a second concentrated water valve V3, and the first concentrated water valve V2 and the second concentrated water valve V3 are both opened only during drug washing and are switched to be used; the tubular membrane module 2 in the device can be washed by chemical washing to wash out residual metal compounds on the tubular membrane module 2, the chemical washing agents in the first chemical washing water tank 81 and the second chemical washing water tank 82 are usually added with acid and alkali, and the acid washing and the alkali washing are not used simultaneously.
A cleaning water pipeline is also connected in parallel on the water production pipeline and is sequentially communicated to the first chemical washing water tank 81 and the second chemical washing water tank 82; a medicine washing water production valve V4 is arranged on the cleaning water pipeline, and the medicine washing water production valve V4 is opened only during medicine washing and is mutually switched with the water production valve V1;
the device also comprises a drug washing water inlet pipeline, the water outlets of the first drug washing water tank 81 and the second drug washing water tank 82 are respectively connected in parallel on the drug washing water inlet pipeline through pipelines, the first drug washing water tank 81 and the second drug washing water tank 82 are connected to the original water pipeline through the drug washing water inlet pipeline, and a cleaning pump 83 is arranged on the drug washing water inlet pipeline; the cleaning pump 83 sends the chemical washing water in the first chemical washing water tank 81 or the chemical washing water in the second chemical washing water tank 82 to the tubular membrane module 2 to clean the tubular membrane module 2.
The water outlets of the first and second drug washing water tanks 81 and 82 are further provided with a first drug washing water outlet valve V5 and a second drug washing water outlet valve V6, which are switched for use, namely, the first drug washing water outlet valve V5 and the second drug washing water outlet valve V6
The second outlet valve V6 is opened only during drug washing, but not both.
From the tubular membrane module 2, the concentrated water (containing nickel/copper) flowing out through the return port respectively enters the first chemical cleaning and washing water tank 81 and the second chemical washing water tank 82 through the chemical washing main pipeline, is mixed with the chemical washing agent in the chemical washing water tanks, and is conveyed into the tubular membrane module 2 through the cleaning pump 83 and the chemical washing water inlet pipeline to form the circulating chemical washing.
Wherein the medicinal lotion is alkali, acid or oxidant.
In the embodiment, a medicine washing water inlet valve V7 is arranged on the medicine washing water inlet pipeline; a medicine washing check valve V8 is arranged between the medicine washing water inlet valve V7 and the cleaning pump 83 and close to the medicine washing water inlet valve V7. The medicine washing water inlet valve V7 is opened during the circulation medicine washing, and the medicine washing check valve V8 can prevent the medicine washing water from flowing backwards, thereby protecting the cleaning pump 83.
In this embodiment, the water production pipeline is further connected in parallel with an emptying pipeline, the emptying pipeline is provided with an emptying valve V9 which is opened only during air exhaust, and the far end of the emptying pipeline extends to the water production tank 3. When the device starts to operate, firstly opening the emptying valve V9, then slowly starting the circulating pump 4 to exhaust, generally exhausting for a period of time, such as 30 seconds, then closing the emptying valve V9, then opening the water producing valve V1, and closing the drug washing water producing valve V4; venting is also typically performed after each cleaning of tubular membrane module 2.
In this embodiment, a clean water production pipeline is further connected in parallel to the backwashing pipeline, a distal end of the clean water production pipeline extends to the water production tank 3, and a clean water production valve V10 that is closed during backwashing is disposed on the clean water production pipeline. When normal water production is carried out, the backwashing valve 62 is closed, the water production valve V1 and the purified water production valve V10 are opened, purified water flowing out of the water production port flows into the water production tank 3 through the water suction pump 5, the water production pipeline, the water production valve V1, the backwashing column 63 and the purified water production valve V10 in sequence, and the purified water production valve V10 is closed when backwashing is carried out, so that air is prevented from flowing into the water production tank 3 from the purified water production pipeline.
In this embodiment, the return line is provided with a concentrate control valve V11 for controlling the concentrate flow rate, and the concentrate control valve V11 is closed during the drug washing.
The utility model has the advantages that:
compared with the prior art, the utility model discloses the waste water treatment device who adopts tubular membrane that implements, the device is applicable to nickeliferous copper waste water, need not through coagulating, flocculation, the processing of materialization devices such as sediment, can produce the mud cake that has use value, no secondary pollution, can realize discharge to reach standard, and follow-up equipment retrieval and utilization is given to the output water purification, and set up the suction pump through the product water pipe department at tubular membrane, make the circulating pump that sets up in the inlet tube department of tubular membrane can alleviate the burden, 5-8 times of energy consumption has been reduced, and then can reduce cost.
The above description is intended to be illustrative of the present invention and is not intended to be limiting, and all such modifications, equivalents and improvements as fall within the spirit and scope of the invention are intended to be included therein.
Claims (9)
1. A wastewater treatment device adopting a tubular membrane is characterized by comprising a concentration water tank for adjusting pH by adding alkali, a tubular membrane component, a water production tank, a raw water pipeline and a water production pipeline; the waste water is conveyed to the concentrated water tank through a waste water collecting pipeline, the concentrated water tank is communicated to a tubular membrane assembly through a raw water pipeline, a circulating pump is installed on the raw water pipeline, the tubular membrane assembly comprises a water production outlet, the water production outlet is communicated to the water production tank through a water production pipeline, a water suction pump is arranged on the water production pipeline and close to the tubular membrane assembly, and the water suction pump and the circulating pump are matched for use and act on the tubular membrane assembly; a back washing component for cleaning the tubular membrane component is also arranged on the water production pipeline in parallel; the tubular membrane component is also provided with a backflow port, the backflow port is connected with a backflow pipeline, and the far end of the backflow pipeline extends to the concentrated water tank to form forced circulation.
2. The apparatus for treating wastewater using tubular membrane according to claim 1, wherein a sludge outlet is provided at the bottom of the concentrated water tank, a sludge line is connected to the sludge outlet, the concentrated water tank is connected to a filter press through the sludge line, a pneumatic diaphragm pump is provided on the sludge line, a filtrate outlet is provided on the filter press, a filtrate recovery line is connected to the filtrate outlet, and the filter press is connected to the concentrated water tank through the filtrate recovery line.
3. The wastewater treatment apparatus using a tubular membrane according to claim 1, wherein the backwash assembly comprises an air compressor, a backwash valve, a backwash line and a backwash column; the air compressor is communicated with the backwashing columns through the backwashing pipeline, the backwashing valve is arranged on the backwashing pipeline and is only opened during backwashing, the backwashing column is connected on the water production pipeline, a water production valve is further arranged on the water production pipeline, the water production valve is located between the water suction pump and the backwashing columns, and a compressed air inlet is formed in the air compressor.
4. The apparatus for treating wastewater using tubular membrane according to claim 3, further comprising a first tank for chemical washing and a second tank for chemical washing, both of which contain chemical washing agents; the return pipeline is connected in parallel with a concentrated water main pipeline, the concentrated water main pipeline is respectively connected in parallel with a first concentrated water pipeline and a second concentrated water pipeline, and the first concentrated water pipeline and the second concentrated water pipeline are respectively communicated to the first medicine washing water tank and the second medicine washing water tank; the first concentrated water pipeline and the second concentrated water pipeline are respectively provided with a first concentrated water valve and a second concentrated water valve, and the first concentrated water valve and the second concentrated water valve are both opened only during drug washing and are switched to be used;
a cleaning water pipeline is also connected in parallel on the water production pipeline and is sequentially communicated to the first chemical washing water tank and the second chemical washing water tank; a drug washing water production valve is arranged on the cleaning water pipeline, is opened only during drug washing and is mutually switched with the water production valve;
the device also comprises a drug washing water inlet pipeline, wherein water outlets of the first drug washing water tank and the second drug washing water tank are respectively connected in parallel on the drug washing water inlet pipeline through pipelines, the first drug washing water tank and the second drug washing water tank are connected onto a raw water pipeline through the drug washing water inlet pipeline, and a cleaning pump is arranged on the drug washing water inlet pipeline;
the water outlet of the first medicine washing water tank and the water outlet of the second medicine washing water tank are respectively provided with a first medicine washing water outlet valve and a second medicine washing water outlet valve which are switched to be used.
5. The wastewater treatment apparatus using a tubular membrane according to claim 4, wherein the chemical washing agent is an alkali, an acid or an oxidizing agent.
6. The apparatus for treating wastewater using tubular membrane according to claim 4, wherein said chemical washing water inlet pipe is provided with a chemical washing water inlet valve; and a medicine washing check valve is arranged between the medicine washing water inlet valve and the cleaning pump and close to the medicine washing water inlet valve.
7. The wastewater treatment device adopting the tubular membrane as claimed in claim 1, wherein an emptying pipeline is further communicated in parallel with the water production pipeline, an emptying valve is arranged on the emptying pipeline, and the far end of the emptying pipeline extends to the water production tank.
8. The wastewater treatment apparatus using a tubular membrane according to claim 4, wherein a clean water production line is further connected in parallel to the backwash line, a distal end of the clean water production line extends to the water production tank, and a clean water production valve which is closed during backwash is provided on the clean water production line.
9. The wastewater treatment apparatus using a tubular membrane according to claim 1, wherein the return line is provided with a concentrate control valve.
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| CN201921408787.XU CN210711054U (en) | 2019-08-28 | 2019-08-28 | Wastewater treatment device adopting tubular membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110386699A (en) * | 2019-08-28 | 2019-10-29 | 深圳市冠融辰环保科技有限公司 | A kind of wastewater treatment equipment using tubular membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386699A (en) * | 2019-08-28 | 2019-10-29 | 深圳市冠融辰环保科技有限公司 | A kind of wastewater treatment equipment using tubular membrane |
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