CN217230493U - Water supply device for directly treating micro-polluted river water - Google Patents
Water supply device for directly treating micro-polluted river water Download PDFInfo
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- CN217230493U CN217230493U CN202220969659.8U CN202220969659U CN217230493U CN 217230493 U CN217230493 U CN 217230493U CN 202220969659 U CN202220969659 U CN 202220969659U CN 217230493 U CN217230493 U CN 217230493U
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Abstract
The utility model discloses a water supply device for directly treating micro-polluted river water, which comprises a carrier biomembrane filtering system, an aeration system for supplying air to the carrier biomembrane filtering system, and a dosing and disinfecting system; the bottom of carrier biomembrane filtration system is provided with the raw water inlet, and carrier biomembrane filtration water outlet end has the post-filtration water tank through going out water piping connection, and the post-filtration water tank is connected with the water main, adds medicine disinfection system and connects on the water main, and the water source after the disinfection is supplied water by the water main. Has the advantages that: the carrier biological membrane filtration system combines a carrier biological treatment technology with an immersed ultrafiltration membrane technology, has small occupied area, plays the degradation treatment role of the carrier biological process on ammonia nitrogen and organic matters, plays the interception role of the ultrafiltration membrane and microorganisms, can ensure the sanitation and safety of the water quality of drinking water by adding drugs for disinfection, saves flocculation and precipitation processes, makes up the defect that the single ultrafiltration treatment process cannot treat micro-polluted raw water, and ensures that the water quality of the outlet water meets the requirement of the standard of drinking water.
Description
Technical Field
The utility model relates to a feedwater treatment technical field especially relates to a pollute river water treatment technology a little.
Background
Along with the development of economy, the improvement of industrialization degree, environmental pollution expands gradually, aggravates, causes the ubiquitous organic matter COD of life drinking water source aquatic, the higher condition of ammonia nitrogen content, leads to the alga content higher simultaneously, produces giardia, cryptosporidium, and current technology is difficult to handle, and water purification plant can not supply water up to standard, seriously influences resident's normal safe water, constitutes serious threat to the health.
The existing feedwater treatment method mainly comprises coagulation, precipitation, filtration and disinfection, and mainly has the function of removing colloid, suspended substance impurities and bacteria in water so as to meet the standard requirement of drinking water. However, the conventional treatment process has no obvious effect of removing organic pollutants and ammonia nitrogen in slightly polluted water, and raw water with heavier pollution can only be partially removed by the conventional process. In addition, the large amount of organic matters and ammonia nitrogen also greatly increases the dosage of chlorine, forms more organic chloride, causes the mutation-causing activity to be increased, and halogenated matters generated by pre-chlorination can not be effectively removed in coagulation, precipitation and filtration treatment.
An ultrafiltration membrane is an active membrane that uses pressure to retain colloids, particles and relatively high molecular weight species in water under the influence of an external driving force (pressure), while water and small solute particles are able to pass through the membrane. The molecular weight of the intercepted molecular weight is more than 1 x 10 by micropore screening on the surface of the membrane -4 Micron material, thereby purifying the water. The ultrafiltration membrane separation technology is used for water supply treatment, and is mainly used for removing pathogenic bacteria, colloid, macromolecular organic matters and suspended matters. It has the following advantages: (1) the quality of the outlet water is stable and is slightly influenced by the fluctuation of the quality of the inlet water; (2) chemical agents such as flocculating agents and the like do not need to be added into the water, so that the problem that the water quality is influenced by the agents is avoided; (3) the membrane separation technology only uses pressure as driving force, so that the separation device is simple, easy to operate, and easy to automatically control and maintain.
The Chinese invention patent CN100562500C discloses a method and a device for deeply purifying drinking water. The method is a drinking water advanced treatment process developed aiming at ubiquitous micro-polluted water sources, and the drinking water advanced purification treatment is carried out by combining a biological activated carbon filter and an ultrafiltration membrane bioreactor. Raw water to be treated firstly enters a biological activated carbon filter, the water discharged from the filter enters an ultrafiltration membrane bioreactor, and the water after two-stage biodegradation treatment is pumped out of an ultrafiltration membrane component by a suction pump. The drinking water deep purification method and the drinking water deep purification device have requirements on the quality of raw water to be treated, and need to be river water or lake reservoir water with lower turbidity which is subjected to clarification treatment in advance; however, the water purification effect is not very satisfactory, and organic substances (COD) Mn ) The absolute value of removal of the ammonia nitrogen is lower than 3mg/L, and the absolute value of removal of the ammonia nitrogen is lower than 3 mg/L; and the method combines the biological activated carbon filter with the ultrafiltration bioreactor, has high cost and is not beneficial to actual production.
CN103466818A discloses an ultrafiltration-powdered activated carbon combined purification method for removing trace organic matters in drinking water, which comprises 4 steps of adsorption of an activated carbon adsorption reactor, activated carbon adsorption in an ultrafiltration membrane pool, an ultrafiltration filtration process, activated carbon reflux and the like. According to the method, the removal effect of trace organic matters in the effluent is improved by increasing the concentration of the activated carbon in the membrane tank, and the activated carbon flows back to the activated carbon adsorption reactor by refluxing, so that the driving effect of the initial concentration on the adsorption speed of the activated carbon is fully utilized. However, the combined purification method is mainly used for removing trace organic matters in drinking water, and has no description on the purification effect of micro-polluted raw water of domestic drinking water. And the method only utilizes physical methods such as activated carbon adsorption, ultrafiltration and filtration and the like, and the removal of ammonia nitrogen in water is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water supply installation of direct processing micro-polluted river to solve current water treatment technique and can not effectively get rid of aquatic ammonia nitrogen, organic matter, alga, harmful microorganism, and can not effectively disinfect the scheduling problem.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a water supply device for directly treating micro-polluted river water comprises a carrier biological membrane filtering system, an aeration system for supplying air to the carrier biological membrane filtering system, and a dosing and disinfection system; the bottom of carrier biomembrane filtration system is provided with the raw water inlet, carrier biomembrane filtration water outlet end has the back water tank of straining through going out water piping connection, it is connected with the water main to strain the back water tank, add medicine disinfection system connection on the water main, the water source after the disinfection is supplied water by the water main.
Further, the carrier biological membrane filtration system comprises a carrier biological module and an ultrafiltration membrane component, wherein a water outlet of the carrier biological module is connected with a water inlet of the ultrafiltration membrane component through an intermediate water pipe and a submersible pump;
the aeration system comprises an air blower and an aeration branch connected to the air outlet end of the air blower, the aeration branch is provided with a first air flow meter and a first aeration disc, and the first aeration disc is positioned at the bottom of the carrier biological module.
Further, the carrier biological module comprises combined fillers, the diameter of the combined fillers is 150-250mm, the longitudinal distance of the combined fillers is 50-100mm, and the transverse distance of the combined fillers is 250-300 mm.
Furthermore, the combined filler comprises a double-ring plastic ring, the outer ring of the double-ring plastic ring is provided with hydroformylation fibers, the fiber bundles are uniformly distributed, the inner ring of the double-ring plastic ring is a snowflake-shaped plastic branch, and a biological film is hung on the inner ring.
Furthermore, the ultrafiltration membrane component is an immersed ultrafiltration membrane component, the membrane material adopts polyvinylidene fluoride, the membrane aperture is 0.01-0.05 μm, and the component form adopts a hollow fiber type.
Furthermore, aeration systems still includes membrane recoil air washing system, and membrane recoil air washing system is including connecting the air-blower is given vent to anger the recoil air washing branch road of end, be equipped with second air flow meter and second aeration dish on the recoil air washing branch road, second aeration dish is located ultrafiltration membrane module bottom.
Furthermore, a vacuum meter, a pressure sensor, a first water outlet valve, a suction pump, a second liquid flow meter and a second water outlet valve are sequentially arranged on the water outlet pipe from the membrane filtration water outlet end to the filtered water tank.
Furthermore, a membrane back-flushing washing system is arranged between the membrane filtering water outlet end and the filtered water tank, the membrane back-flushing washing system comprises a first section of back-flushing pipeline, a first back-flushing valve, a second section of back-flushing pipeline and a second back-flushing valve, the first back-flushing valve is arranged on the first section of back-flushing pipeline, the second back-flushing valve is arranged on the second section of back-flushing pipeline,
the water inlet end of the first section of backwashing pipeline is connected to the filtered water tank, and the water outlet end of the first section of backwashing pipeline is connected to the position, between the first water outlet valve and the suction pump, on the water outlet pipe; the water inlet end of the second section of backwashing pipeline is connected to a position, between the second liquid flow meter and the second water outlet valve, on the water outlet pipe, the water outlet end of the second section of backwashing pipeline is connected to a position, before the water inlet end of the vacuum meter of the water outlet pipe, the first water outlet valve and the second water outlet valve are closed during backwashing, the first backwashing valve and the second backwashing valve are opened, water in the filtered water tank enters the first section of backwashing pipeline under the action of the suction pump, passes through the first backwashing valve, the suction pump and the second liquid flow meter, enters the second section of backwashing pipeline, passes through the second backwashing valve and the membrane filtration water outlet end, and enters the ultrafiltration membrane component to realize membrane backwashing water washing.
Further, the carrier biological membrane filtering system, the aeration system, the filtered water tank and the dosing and disinfection system are integrated on the bearing platform;
the carrier biological membrane filtering system is arranged in a box body, a partition plate is arranged in the box body, the ultrafiltration membrane component is arranged on the partition plate, and the carrier biological module is positioned below the partition plate;
the middle water pipe is also provided with a first liquid flowmeter;
the bearing platform is supported by a floating tool, the ultrafiltration membrane component is positioned above the liquid level, the carrier biological module is positioned below the liquid level, the raw water inlet is positioned at the bottom of the carrier biological module, and the bottom of the carrier biological module is also provided with a mud valve.
Further, the water main is located the upper reaches part that adds the medicine disinfection system is equipped with total water pump, add the medicine disinfection system including medicine storage tank, dosing pipe and install diaphragm metering pump, the medicine valve on the dosing pipe, medicine storage tank passes through the dosing pipe and connects on the water main.
A water supply method of the water supply device for directly treating the slightly polluted river water comprises the following steps:
(1) raw water (the micro-polluted river water to be treated) enters a carrier biological membrane filtration system, and ammonia nitrogen and organic matters are removed through the microbial treatment of a carrier biological module; the effluent treated by the carrier biological module is treated by an ultrafiltration membrane component to remove particulate matters and macromolecular organic pollutants in the water and simultaneously intercept microorganisms; the effluent treated by the ultrafiltration membrane component enters a filtered water tank;
(2) the filtered water from the water tank enters a water main; the dosing and disinfecting system adds a disinfectant into the water main; the disinfected water is output for water supply.
Preferably, in the carrier biological module treatment stage in the step (1), the blower and the first aeration disc provide air, and the hydraulic retention time of raw water in the carrier biological module is 1-2h under the condition that the volume ratio of air to water is 1:1-2.5: 1.
More preferably, the ultrafiltration membrane of the ultrafiltration membrane component is set to have the filtration flux of 50-60L/m 2 H, suction pressure of 0 to 60 kPa.
Preferably, the method also comprises the steps of setting the ultrafiltration membrane component for regular online physical backwashing and offline chemical cleaning,
the process of the on-line physical backwashing comprises the following steps: air is supplied by a blower, the air enters the ultrafiltration membrane component from the second aeration disc, the first water outlet valve and the second water outlet valve are closed at the same time, the first backwashing valve and the second backwashing valve are opened, water in the filtered water tank 3 enters the first section backwashing pipeline through the action of the suction pump, enters the second section backwashing pipeline through the first backwashing valve, the suction pump and the second liquid flow meter, enters the ultrafiltration membrane component through the second backwashing valve and the membrane filtration water outlet end, the volume ratio of the air to the water entering the ultrafiltration membrane component is 2:1-8:1, and the air and the water are stirred and mixed to wash and clean the ultrafiltration membrane filaments.
The on-line physical back washing is provided with two modes, one mode is normal filtration: the online physical backwashing time ratio is 9: 1; the other is that normal filtration is stopped when the membrane pressure reaches-0.6 MP, and online physical back washing is carried out for 5 min;
the off-line chemical cleaning is carried out every 30 days, and the process comprises the following steps: and the dosing and disinfection system adds a drug into the main water pipe, and the disinfectant and the water in the filtered water tank enter the membrane backwashing and washing system and enter the ultrafiltration membrane component for soaking for 120-240 min under the action of the suction pump.
Preferably, the retention time of sludge in the carrier biological membrane filtration system is 3d-7d, sludge is discharged outwards through a sludge discharge valve periodically, and medicinal washing liquid and flushing liquid after the ultrafiltration membrane module is cleaned periodically are also discharged through the sludge discharge valve.
The utility model has the advantages that: the carrier biological treatment technology and the immersed ultrafiltration membrane technology are organically combined, and a medicine adding and disinfecting system is arranged, so that the degradation treatment effect of the carrier biological process on ammonia nitrogen and organic matters is fully exerted, the interception effect of the ultrafiltration membrane and microorganisms is exerted, meanwhile, the medicine adding and disinfection can ensure the sanitation and safety of the water quality of drinking water, the defect that the micro-polluted raw water cannot be treated by a single ultrafiltration treatment process is overcome, and the water quality of effluent meets the requirement of the standard of drinking water; the device is arranged on a bearing platform and can be placed in a river channel to directly treat river water, so that flocculation and sedimentation processes are omitted, land area is not occupied, the device is convenient to move, and the device is flexible to use; can bear the raw water quality fluctuation in a large range; saving energy consumption, reducing pollutant discharge and being simple and convenient to operate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:
FIG. 1 is a schematic view of the overall structure of a water supply apparatus;
FIG. 2 is a schematic view of the structure of part a;
FIG. 3 is a schematic view of the structure of part b;
fig. 4 is a schematic view of the structure of the part c.
The system comprises a raw water inlet 1, a water outlet pipe 2, a vacuum meter 21, a pressure sensor 22, a first water outlet valve 23, a suction pump 24, a second liquid flow meter 25, a second water outlet valve 26, a filtered water tank 3, a first section back-flushing pipeline 31, a first back-flushing valve 32, a second section back-flushing pipeline 33, a second back-flushing valve 34, a water main pipe 4, a water main pump 41, a carrier biological module 5, an ultrafiltration membrane assembly 6, a partition plate 61, an intermediate water pipe 62, a first liquid flow meter 63, a submersible pump 64, a blower 71, an aeration branch 72, a first air flow meter 73, a first aeration disc 74, a back-flushing branch 75, a second air flow meter 76, a second aeration disc 77, a dosing and disinfection system 8, a medicine storage tank 81, a dosing pipe 82, a diaphragm metering pump 83, a dosing valve 84 and a mud valve 9.
Detailed Description
The present invention will be described in detail with reference to the drawings and specific embodiments, and the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
As shown in fig. 1-4, a water supply device for directly treating micro-polluted river water comprises a carrier biological membrane filtration system, an aeration system for supplying air to the carrier biological membrane filtration system, and a dosing and disinfection system 8; the bottom of carrier biomembrane filtration system is provided with raw water inlet 1, carrier biomembrane filtration system's membrane filters the water outlet end and is connected with and strains back water tank 3 through outlet pipe 2, it is connected with water main 4 to strain back water tank 3, add medicine disinfection system 8 and connect on water main 4, the water source after the disinfection is supplied water by water main 4.
The carrier biological membrane filtration system comprises a carrier biological module 5 and an ultrafiltration membrane assembly 6, wherein a water outlet of the carrier biological module 5 is connected with a water inlet of the ultrafiltration membrane assembly 6 through an intermediate water pipe 62 and a submersible pump 64.
The aeration system comprises a blower 71 and an aeration branch 72 connected to the air outlet end of the blower 71, the aeration branch 72 is provided with a first air flow meter 73 and a first aeration disc 74, and the first aeration disc 73 is positioned at the bottom of the carrier biological module 5 and provides dissolved oxygen for the carrier biological module 5.
The carrier biological module 5 comprises combined fillers, the diameter of the combined fillers is 150-250mm, the longitudinal spacing of the combined fillers is 50-100mm and the transverse spacing of the combined fillers is 250-300mm calculated by the distance between the centers of the single combined fillers.
The combined filler comprises a double-ring plastic ring, wherein the outer ring of the double-ring plastic ring is provided with hydroformylation fibers, the fiber bundles are uniformly distributed, the inner ring of the double-ring plastic ring is a snowflake-shaped plastic branch, and a biological film is hung on the inner ring.
The ultrafiltration membrane component 6 is an immersed ultrafiltration membrane component, the membrane material is polyvinylidene fluoride, the membrane aperture is 0.01-0.05 μm, and the component form is a hollow fiber type. The detailed structure of the carrier biological module 5 and the ultrafiltration membrane module 6 can be understood by those skilled in the art from the prior art and the contents of the present specification, and the drawings are omitted.
The aeration system further comprises a membrane backwashing gas system, the membrane backwashing gas system comprises a backwashing gas branch 75 connected to the air outlet end of the air blower 71, a second air flow meter 76 and a second aeration disc 77 are arranged on the backwashing gas branch 75, and the second aeration disc 77 is located at the bottom of the ultrafiltration membrane assembly 6.
The water outlet pipe 2 is sequentially provided with a vacuum meter 21, a pressure sensor 22, a first water outlet valve 23, a suction pump 24, a second liquid flow meter 25 and a second water outlet valve 26 from the membrane filtration water outlet end to the filtered water tank 3.
A membrane back-flushing washing system is arranged between the membrane filtration water outlet end and the filtered water tank 3, the membrane back-flushing washing system comprises a first section back-flushing pipeline 31, a first back-flushing valve 32, a second section back-flushing pipeline 33 and a second back-flushing valve 34, the first back-flushing valve 32 is arranged on the first section back-flushing pipeline 31, the second back-flushing valve 34 is arranged on the second section back-flushing pipeline 33,
the water inlet end of the first section of back flushing pipeline 31 is connected to the filtered water tank 3, and the water outlet end of the first section of back flushing pipeline is connected to the position, between the first water outlet valve 23 and the suction pump 24, on the water outlet pipe 2; the water inlet end of the second section of backwashing pipeline 33 is connected to the position, between the second liquid flow meter 25 and the second water outlet valve 26, on the water outlet pipe 2, the water outlet end of the second section of backwashing pipeline is connected to the position, before the water inlet end of the vacuum meter 21, on the water outlet pipe 2, the first water outlet valve 23 and the second water outlet valve 26 are closed during backwashing, the first backwashing valve 32 and the second backwashing valve 34 are opened, the filtered water in the water tank 3 enters the first section of backwashing pipeline 31 under the action of the suction pump 24, passes through the first backwashing valve 32, the suction pump 24 and the second liquid flow meter 25, enters the second section of backwashing pipeline 33, passes through the second backwashing valve 34 and the membrane filtering water outlet end, and enters the ultrafiltration membrane component 6 to realize membrane backwashing.
The carrier biological membrane filtering system, the aeration system, the filtered water tank 3 and the dosing and disinfection system 8 are arranged on the bearing platform in a container structure,
carrier biomembrane filtration system installs in a box, the internal baffle 61 that is equipped with of box, milipore filter subassembly 6 is established on baffle 61, carrier biological module 5 is located baffle 61 below, absorbs aeration biological filter technique and milipore filter filtration technique's advantage, merges into a test device with the reactor of two technologies and installs in a box, need not to set up biological pond and milipore filter equipment alone, and it is little to have area, practices thrift the energy consumption, reduces the emission of pollutant to and advantages such as easy and simple to handle.
The intermediate water pipe 62 is also provided with a first liquid flowmeter 63;
the bearing platform is supported by a floating tool (an inflatable floating mat), so that the occupied area is small; the ultrafiltration membrane component 6 is positioned above the liquid level; the carrier biological module 5 is positioned below the liquid level, the raw water inlet 1 is positioned at the bottom of the carrier biological module 5, and the bottom of the carrier biological module 5 is also provided with a mud valve 9.
The water main 4 is located the upper reaches part of medicine adding disinfection system 8 is equipped with total water pump 41, medicine adding disinfection system 8 includes medicine storage tank 81, adds pencil 82 and installs diaphragm metering pump 83, the medicine valve 84 on adding pencil 82, medicine storage tank 81 passes through medicine adding pencil 82 and connects on the water main 4.
The working process of the water supply device is as follows: the water supply device is directly installed in a river channel, raw water enters the carrier biological module 5 through the raw water inlet 1, under the condition that the blower 71 and the first aeration disc 74 provide sufficient air, for example, the volume ratio of air to water is 1:1-2.5:1, the hydraulic retention time of the raw water in the carrier biological module 5 is 1-2h, the comprehensive effects of biological flocculation, adsorption, nitrification, biological degradation and the like are exerted by utilizing the self-life metabolic activity (oxidation, reduction, synthesis and decomposition) of aerobic microorganisms, ammonia nitrogen, organic matters, algae and THMs precursors in the raw water are removed, and the generation of disinfection by-products (DBPs) is reduced. The biological contact oxidation process is applied, so that the water quality is purified, the possibility that potential carcinogens such as THMs and the like are possibly generated in the subsequent purification and chlorination disinfection processes is obviously reduced, and the safety and sanitary quality of the water quality of the drinking water is improved in an economic, effective and non-toxic side effect manner. The biological contact oxidation process has the advantages of both an activated sludge process and a biofilm process, and has the characteristics of convenient maintenance and management, small occupied area, no sludge backflow, no sludge expansion, stable treatment effect and the like.
The effluent treated by the carrier biological module 5 is lifted to the ultrafiltration membrane component 6 through the middle water pipe 62 and the first liquid flow meter 63 under the action of the submersible pump 64, and the filtration flux of the ultrafiltration membrane is 50-60 (L/m) 2 H) the suction pressure is 0-60kPa, the membrane pollution can be effectively controlled, the times of physical cleaning and chemical cleaning of the membrane are reduced, the service life of the membrane is prolonged, particles, suspended matters and macromolecular organic pollutants in water are removed through an ultrafiltration membrane, and two worms (giardia, cryptosporidium) are intercepted,Algae, bacteria, viruses and the like, the turbidity of the effluent is reduced to be below 0.1NTU, the removal rate of particulate matters can reach more than 99.9 percent, the effluent treated by the membrane filtration section enters the filtered water tank 3 through the water outlet pipe 2, the first water outlet valve 23, the second liquid flow meter 25 and the second water outlet valve 26 under the action of the suction pump 24, and the suction pressure of the suction pump 24 is measured through the vacuum meter 21 and the pressure sensor 22; the water in the filtered water tank 3 enters the water main 4 through the water main pump 41, the disinfectant (hypochlorous acid/sodium hypochlorite) in the medicine storage tank 81 is controlled to be added into the water main 4 through the diaphragm metering pump 83 and the medicine adding valve 84, and the water in the water main 4 enters the water supply pipe through disinfection to provide a drinking water source.
The ultrafiltration membrane component 6 is provided with regular online physical backwashing and offline chemical cleaning, and the online physical backwashing is provided with two modes, one mode is normal filtration: the online physical backwashing time ratio is 9: 1; the other is that normal filtration is stopped when the membrane pressure reaches-0.6 MP, and on-line physical back washing is carried out for 5 min; the physical backwashing implementation mode comprises the following steps: the air is provided by the blower 71, the air enters the ultrafiltration membrane module 6 from the second aeration disc 77, the first water outlet valve 23 and the second water outlet valve 26 are closed at the same time, the first back-washing valve 32 and the second back-washing valve 34 are opened, the water in the filtered water tank 3 enters the first section back-washing pipeline 31 under the action of the suction pump 24, enters the second section back-washing pipeline 33 through the first back-washing valve 32, the suction pump 24 and the second liquid flow meter 25, enters the ultrafiltration membrane module 6 through the second back-washing valve 34 and the membrane filtering water outlet end, the volume ratio of the air and the water entering the ultrafiltration membrane module 6 is 2:1-8:1, and the ultrafiltration membrane filaments are washed and cleaned by stirring and mixing.
And performing off-line chemical cleaning every 30 days, wherein the soaking time of the chemical cleaning is 120-240 min. The off-line chemical cleaning method comprises the following implementation modes: and after the membrane module runs for a set time, performing an off-line chemical cleaning program to recover the service performance of the membrane module. During chemical cleaning, the normal filtering process is stopped, the chemical cleaning process is started, the chemical adding and disinfecting system 8 adds chemicals into the water main 4, the disinfectants and the water in the filtered water tank 3 enter the membrane backflushing washing system under the action of the suction pump 24, and the water enters the ultrafiltration membrane assembly 6 to be soaked for 120-240 min.
In order to avoid excessive accumulation of sludge in the carrier biological membrane filtration system, the retention time of the sludge is 3d-7d, the sludge is discharged outwards through a sludge discharge valve 9 periodically, and the lotion and the flushing fluid are also discharged through the sludge discharge valve 9.
The utility model discloses the configuration of system has been optimized to the at utmost, great saving total investment and working costs when guaranteeing the treatment effect, area is little, but the direct mount does not occupy land area in the river, and easy operation, operation management are convenient.
Example one
In this example, the carrier biological module and the ultrafiltration membrane module are installed in a stainless steel body with the size of 1.0 × 1.0 × 4.1 (length × 0 width × 1 height, unit m) to form a carrier biological membrane filtration system, a perforated sludge discharge pipe is arranged at the lower part, a partition plate is built between the carrier biological module and the ultrafiltration membrane module, and the height of the partition plate is 2.10 m. When the water level reaches 2.10m, the water overflows from the top of the partition plate to the ultrafiltration membrane area. Carrier bio-module size: 1.0 × 21.0 × 31.5 (length × 4 width × 5 height, unit m), the effective oxidation area is 0.3m away from the bottom, and 0.3m is reserved between the top of the carrier biological module and the partition plate; ultrafiltration membrane module size 0.721 × 0.70 × 1.622 (length × width × height, unit m), ultrafiltration membrane module size: 1.0 × 1.0 × 1.7 (length × width × height, unit m), and 0.3m is reserved between the top of the ultrafiltration membrane region and the top of the stainless steel body. The gas-water ratio of the biological contact oxidation is 1:1, and the aeration quantity is 1.5m 3 And h, aerating by using a perforated pipe. The unit diameter of the combined filler is 150mm, the longitudinal distance is 80mm, the transverse distance is 250mm, the ultrafiltration membrane part adopts Hainan Lisheng PVDF immersed ultrafiltration membrane, model number LJ1E1-1500-F160, and the effective membrane area is 18m 3 The inner diameter of the membrane fiber is 1.00mm, the outer diameter is 1.80mm, and the aperture is 0.02 μm. Maximum water yield of 1.0m 3 H, the maximum water quantity of back washing is 1.2m 3 H, gas purge amount 6m 3 H is used as the reference value. The rest of the structure is arranged as described above, and the description is omitted here.
In the embodiment, micro-polluted source water of Guangzhou Zhujiang west channel is selected and collected by a water taking pump, the water temperature is 20 ℃, and the treatment scale is 1m 3 /h。
The specific treatment process comprises the following steps:
(1) collecting the micro-polluted river water to be treated by a water taking pump, and entering a carrier biological membrane filtering system from a perforated plate at the bottom of the box body, wherein the hydraulic retention time of the micro-polluted river water in the carrier biological membrane module is 1.5h, so that ammonia nitrogen and organic matters are removed;
(2) the effluent treated by the carrier biological membrane module is pumped to an ultrafiltration membrane component by a submersible pump in the center of the partition plate, and the designed filtration flux is 50-60 (L/m) 2 H), suction pressure 0-60kPa, normal filtration-backwash ratio 9: 1. The particles and macromolecular organic pollutants in the water are removed through the treatment of an ultrafiltration membrane component, and meanwhile, microorganisms such as two worms (giardia, cryptosporidium), algae, bacteria and the like can be intercepted;
(3) the effluent treated by the ultrafiltration membrane component enters a filtered water tank through a suction pump;
(4) the outlet water of the filtered water tank enters a water main through a water main pump;
(5) the dosing and disinfecting system controls the addition of sodium hypochlorite disinfectant into the water main through a dosing pipe by a diaphragm metering pump and a dosing valve;
(6) the disinfected water is directly output for water supply.
The water purification effect: turbidity in effluent water is less than 0.5NTU, NH 3 -N concentration lower than 0.5mg/L, COD MN The removal rate of the algae is more than 80 percent and the giardia lamblia and the cryptosporidium are all less than 1/10L, and the indexes meet the sanitary standards for drinking water (GB 5749-2006).
In conclusion: the utility model discloses the configuration of system has been optimized to the at utmost, can not establish water installations, but the direct mount does not occupy land area in the river, easy operation, the operation management is convenient, need not to throw and add the coagulant, do not influence quality of water and do not have secondary pollution, can bear the raw water quality of water fluctuation on a large scale, no concentrate discharges, reduce water loss and water transportation process's energy consumption, it satisfies "life drinking water health standard" (GB 5749-2006) to go out water quality of water, great saving total investment and working costs when guaranteeing the treatment effect.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (10)
1. A water supply device for directly treating micro-polluted river water is characterized in that:
comprises a carrier biological membrane filtering system, an aeration system for supplying air to the carrier biological membrane filtering system, and a dosing and disinfecting system; the bottom of carrier biomembrane filtration system is provided with the raw water inlet, carrier biomembrane filtration water outlet end has the back water tank of straining through going out water piping connection, it is connected with the water main to strain the back water tank, add medicine disinfection system connection on the water main, the water source after the disinfection is supplied water by the water main.
2. The water supply installation for directly treating micro-polluted river water as claimed in claim 1, wherein:
the carrier biological membrane filtration system comprises a carrier biological module and an ultrafiltration membrane component, wherein a water outlet of the carrier biological module is connected with a water inlet of the ultrafiltration membrane component through an intermediate water pipe and a submersible pump;
the aeration system comprises an air blower and an aeration branch connected to the air outlet end of the air blower, the aeration branch is provided with a first air flow meter and a first aeration disc, and the first aeration disc is positioned at the bottom of the carrier biological module.
3. The water supply installation for directly treating micro-polluted river water as claimed in claim 2, wherein:
the carrier biological module comprises combined fillers, the diameter of the combined fillers is 150-250mm, the longitudinal distance of the combined fillers is 50-100mm and the transverse distance of the combined fillers is 250-300mm calculated by the distance between the centers of the single combined fillers.
4. The water supply installation for directly treating micro-polluted river water as claimed in claim 3, wherein:
the combined filler comprises a double-ring plastic ring, wherein the outer ring of the double-ring plastic ring is provided with hydroformylation fibers, the fiber bundles are uniformly distributed, the inner ring of the double-ring plastic ring is a snowflake-shaped plastic branch, and a biological film is hung on the inner ring.
5. The water supply installation for directly treating micro-polluted river water as claimed in claim 2, wherein:
the ultrafiltration membrane component is an immersed ultrafiltration membrane component, the membrane material is polyvinylidene fluoride, the membrane aperture is 0.01-0.05 μm, and the component form is a hollow fiber type.
6. The water supply installation for directly treating micro-polluted river water as claimed in claim 2, wherein:
the aeration system further comprises a membrane backflushing gas washing system, the membrane backflushing gas washing system comprises a backflushing gas washing branch connected to the air outlet end of the air blower, a second air flow meter and a second aeration disc are arranged on the backflushing gas washing branch, and the second aeration disc is located at the bottom of the ultrafiltration membrane assembly.
7. The water supply apparatus for directly treating a micro-polluted river water as claimed in claim 1 or 2, wherein:
and the water outlet pipe is sequentially provided with a vacuum meter, a pressure sensor, a first water outlet valve, a suction pump, a second liquid flowmeter and a second water outlet valve from the membrane filtration water outlet end to the filtered water tank.
8. The water supply installation for directly treating micro-polluted river water as claimed in claim 7, wherein:
a membrane back-flushing washing system is arranged between the membrane filtration water outlet end and the filtered water tank and comprises a first section of back-flushing pipeline, a first back-flushing valve, a second section of back-flushing pipeline and a second back-flushing valve, wherein the first back-flushing valve is arranged on the first section of back-flushing pipeline, the second back-flushing valve is arranged on the second section of back-flushing pipeline,
the water inlet end of the first section of back flushing pipeline is connected to the filtered water tank, and the water outlet end of the first section of back flushing pipeline is connected to the position, between the first water outlet valve and the suction pump, on the water outlet pipe; the water inlet end of the second section of backwashing pipeline is connected to a position, between the second liquid flow meter and the second water outlet valve, on the water outlet pipe, the water outlet end of the second section of backwashing pipeline is connected to a position, before the water inlet end of the vacuum meter of the water outlet pipe, the first water outlet valve and the second water outlet valve are closed during backwashing, the first backwashing valve and the second backwashing valve are opened, water in the filtered water tank enters the first section of backwashing pipeline under the action of the suction pump, passes through the first backwashing valve, the suction pump and the second liquid flow meter, enters the second section of backwashing pipeline, passes through the second backwashing valve and the membrane filtration water outlet end, and enters the ultrafiltration membrane component to realize membrane backwashing water washing.
9. The water supply installation for directly treating micro-polluted river water as claimed in claim 2, wherein:
the carrier biological membrane filtering system, the aeration system, the filtered water tank and the dosing and disinfection system are integrated on the bearing platform;
the carrier biological membrane filtering system is arranged in a box body, a partition plate is arranged in the box body, the ultrafiltration membrane component is arranged on the partition plate, and the carrier biological module is positioned below the partition plate;
the middle water pipe is also provided with a first liquid flowmeter;
the bearing platform is supported by a floating tool, the ultrafiltration membrane component is positioned above the liquid level, the carrier biological module is positioned below the liquid level, the raw water inlet is positioned at the bottom of the carrier biological module, and the bottom of the carrier biological module is also provided with a mud valve.
10. The water supply installation for directly treating micro-polluted river water as claimed in claim 1, wherein:
the water main is located the upper reaches part of medicine disinfection system is equipped with total water pump, add medicine disinfection system including medicine storage tank, dosing pipe and install diaphragm metering pump, the medicine valve on the dosing pipe, the medicine storage tank is connected through the dosing pipe on the water main.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220969659.8U CN217230493U (en) | 2022-04-25 | 2022-04-25 | Water supply device for directly treating micro-polluted river water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220969659.8U CN217230493U (en) | 2022-04-25 | 2022-04-25 | Water supply device for directly treating micro-polluted river water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217230493U true CN217230493U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220969659.8U Active CN217230493U (en) | 2022-04-25 | 2022-04-25 | Water supply device for directly treating micro-polluted river water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217230493U (en) |
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2022
- 2022-04-25 CN CN202220969659.8U patent/CN217230493U/en active Active
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