CN110790398A - Biological membrane blanket device for sewage treatment and engineering application method - Google Patents
Biological membrane blanket device for sewage treatment and engineering application method Download PDFInfo
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- CN110790398A CN110790398A CN201911212285.4A CN201911212285A CN110790398A CN 110790398 A CN110790398 A CN 110790398A CN 201911212285 A CN201911212285 A CN 201911212285A CN 110790398 A CN110790398 A CN 110790398A
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- 239000010865 sewage Substances 0.000 title claims abstract description 130
- 239000012528 membrane Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 239000010802 sludge Substances 0.000 claims abstract description 27
- 239000011152 fibreglass Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 50
- 239000010935 stainless steel Substances 0.000 claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000005276 aerator Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000004071 biological effect Effects 0.000 abstract description 8
- 244000005700 microbiome Species 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000000746 purification Methods 0.000 description 6
- 238000005273 aeration Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 239000003344 environmental pollutant Substances 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
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- 238000003786 synthesis reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Engineering & Computer Science (AREA)
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Abstract
A biomembrane blanket device for sewage treatment and an engineering application method relate to the technical field of sewage treatment. The invention aims to solve the problems of low sludge amount, low biological activity and low mass transfer efficiency of the conventional biochemical system. The method comprises the following steps: bottom bearing installation: fixing two ends of a supporting steel structure on the inner wall of a biochemical pool, placing a glass fiber reinforced plastic grid on the upper end surface of the supporting steel structure, placing a biological membrane blanket device for sewage treatment on the glass fiber reinforced plastic grid, and finally fastening to complete the bottom bearing installation of the biological membrane blanket device for sewage treatment; upper part fixed mounting: firstly, the biomembrane blanket device for sewage treatment is connected with the lower part of the supporting steel structure, and then the two ends of the upper part of the supporting steel structure are fixed at the upper edge of the biochemical tank, so that the biomembrane blanket device for sewage treatment is fixedly arranged on the upper part. The invention can obtain a biomembrane blanket device for sewage treatment and an engineering application method.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a biological membrane blanket device for sewage treatment and an engineering application method.
Background
In a biochemical system for sewage treatment, the biomass, the biological activity and the mass transfer efficiency of a biological tank directly determine the biochemical efficiency, but when the sludge concentration of the biochemical tank exceeds more than 4000mg/L, a relatively serious sludge leakage problem occurs, and when the sludge concentration of the biochemical tank exceeds more than 6000mg/L, a traditional biochemical system cannot normally run due to serious sludge leakage, the problem is more serious under the working conditions of low temperature and high salt, and the water purification efficiency of the biochemical system is directly influenced by the sludge amount of the biochemical tank, so that how to improve the sludge concentration and the sludge activity of the biochemical tank becomes a research difficulty and a hotspot of sewage treatment technology. At present, engineering technicians mostly adopt a method of adding fluidized fillers or increasing MBR membrane concentrated sludge to realize the improvement of the sludge concentration of a biochemical pond, but the two methods also have great defects: firstly, in the method of adding the fluidized filler, because the filler flows along with water, the microbial flora is difficult to form a degradation gradient, strains are seriously homogenized, the degradation efficiency is greatly reduced, and if the fluidized filler is intercepted by a net, the problems of blockage and accumulation exist, the uniform distribution, the biological activity and the mass transfer efficiency of biomass in a biochemical pond are influenced, so the method of adding the biological fluidized filler cannot solve the problem of the biomass well all the time; secondly, if MBR membrane is added to concentrate sludge, the concentration of the sludge is multiplied, but the problems of strain aging and poor activity are caused, the engineering investment is increased (about 30-40 percent) and the operation cost of sewage treatment is greatly increased (about 40-60 percent), and the problems of membrane blockage and high cost of membrane replacement are caused. Therefore, the problems of biomass, biological activity and mass transfer efficiency of a biochemical pool and a biochemical system are solved effectively, and the problem that the sewage treatment efficiency is disturbed for many years is always solved.
Disclosure of Invention
The invention aims to solve the problems of low sludge amount, low biological activity and low mass transfer efficiency of the conventional biochemical system, and provides a biological membrane blanket device for sewage treatment and an engineering application method.
A biomembrane blanket device for sewage treatment comprises a stainless steel combined support, a plurality of membrane blanket supporting stainless steel tubes and a plurality of biomembrane blankets, wherein a plurality of circular holes for fixing the membrane blankets are radially arranged on two long edges of a top end frame and a bottom end frame of the stainless steel combined support, fixing rings are respectively arranged at the upper end and the lower end of each biomembrane blanket, and limiting holes are radially arranged on the side walls of the membrane blanket supporting the two ends of the stainless steel tubes;
on the top end face of the biomembrane blanket device for sewage treatment, a membrane blanket supporting stainless steel tube penetrates through a fixing ring at the upper end of the biomembrane blanket, two ends of the membrane blanket supporting stainless steel tube extend into circular holes of the fixed membrane blanket, and two clips are respectively inserted into limiting holes at two ends of the membrane blanket supporting stainless steel tube; on the bottom end face of the biomembrane blanket device for sewage treatment, the membrane blanket supporting stainless steel tube penetrates through a fixing ring at the lower end of the biomembrane blanket, two ends of the membrane blanket supporting stainless steel tube extend into circular holes of the fixing membrane blanket, and two clips are respectively inserted into limiting holes at two ends of the membrane blanket supporting stainless steel tube.
An engineering application method of a biomembrane blanket device for sewage treatment is completed according to the following steps:
the vertical suspension of the biomembrane blanket device for sewage treatment is arranged in a biochemical pond, the placing direction of the biomembrane blanket device for sewage treatment in the biochemical pond is parallel to the sewage flow direction, a sludge plug-flow device is required to be arranged at the bottom of the biochemical pond, and the distance from the sludge plug-flow device to the bottom of the biomembrane blanket device for sewage treatment is not less than 1000 mm.
The invention has the beneficial effects that:
the biomembrane blanket device for sewage treatment provides more suitable living environment and inhabitation space for microorganism propagation, accelerates the growth of microbial flora, improves the sludge concentration of a biochemical system, and improves the water purification efficiency of the biochemical system. The biological membrane blanket is a modularized device, is beneficial to transportation and field assembly, is particularly suitable for the upgrading and capacity expansion of sewage plants, can stably improve the sludge concentration of a biochemical system, retains high-efficiency biological strains, and is convenient for the integral transfer of the strains among biochemical pools of different sewage plants.
The invention relates to a biomembrane blanket device for sewage treatment and an engineering application method, which can solve the problem that a newly-built sewage plant can install a microorganism carrier-biomembrane blanket device quickly and efficiently, in particular can carry out the operation of water lifting and capacity expansion without stopping the water of the existing sewage plant-the installation of the biomembrane blanket device with water in a biochemical pool, can reduce secondary environmental pollution to the maximum extent, bring a large scale lifting and capacity expansion space for the original sewage plant, greatly save the once investment cost and the water treatment cost per ton for the reconstruction of the sewage plant, and simultaneously shorten the construction and reconstruction period and difficulty. The engineering application method for treating sewage by the biomembrane blanket can realize multiple beneficial effects of benefit, efficiency, saving, environmental protection and the like. Compared with the prior art, the method can improve the sludge content of the biochemical system by 50-200%, improve the biological activity by 30-50% and improve the mass transfer efficiency by 20-30%.
The invention can obtain a biomembrane blanket device for sewage treatment and an engineering application method.
Drawings
FIG. 1 is a schematic structural diagram of a biofilm carpet device for sewage treatment according to an embodiment;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
FIG. 4 is a schematic structural view of a biofilm carpet device for sewage treatment according to a second embodiment, which is installed in a bottom supporting manner;
fig. 5 is a schematic structural view of a biofilm carpet device for sewage treatment according to a second embodiment, which is installed in an upper fixing manner.
Wherein, 1 is the biomembrane blanket device for sewage treatment, 2 is the biomembrane blanket, 3 is that the membrane blanket supports nonrust steel pipe, 4 is the round hole of fixed membrane blanket, 5 is solid fixed ring, 6 is checkposts 6, 7 is stainless steel sectional shelf, 8 is biochemical pond, 9 is fixing bolt, 10 is the support steel structure, 11 is the aerator.
Detailed Description
The first embodiment is as follows: the biomembrane blanket device for sewage treatment comprises a stainless steel combined support 7, a plurality of membrane blanket supporting stainless steel tubes 3 and a plurality of biomembrane blankets 2, wherein a plurality of circular holes 4 for fixing the membrane blankets are radially arranged on two long edges of a top end frame and a bottom end frame of the stainless steel combined support 7, fixing rings 5 are respectively arranged at the upper end and the lower end of each biomembrane blanket 2, and limiting holes are radially arranged on the side walls of the two ends of each membrane blanket supporting stainless steel tube 3;
on the top end face of the biomembrane blanket device 1 for sewage treatment, a membrane blanket supporting stainless steel tube 3 penetrates through a fixing ring 5 at the upper end of a biomembrane blanket 2, two ends of the membrane blanket supporting stainless steel tube 3 extend into a circular hole 4 of the fixed membrane blanket, and two clips 6 are respectively inserted into limiting holes at two ends of the membrane blanket supporting stainless steel tube 3; on the bottom end face of the biomembrane blanket device 1 for sewage treatment, the membrane blanket supporting stainless steel tube 3 penetrates through the fixing ring 5 at the lower end of the biomembrane blanket 2, the two ends of the membrane blanket supporting stainless steel tube 3 extend into the round holes 4 of the fixed membrane blanket, and the two clips 6 are respectively inserted into the limiting holes at the two ends of the membrane blanket supporting stainless steel tube 3.
The beneficial effects of the embodiment are as follows:
this embodiment is a biofilm blanket device for sewage treatment, for the microorganism is multiplied and is provided more suitable living environment and habitat, accelerates microbial flora's growth, improves biochemical system sludge concentration, promotes biochemical system's water purification efficiency. Because the biomembrane blanket 2 is a modularized device, the transport and the field assembly are facilitated, the device is particularly suitable for the upgrading and the capacity expansion of a sewage plant, the sludge concentration of a biochemical system can be stably improved, high-efficiency biological strains are reserved, and the integral transfer of the strains among the biochemical pools 8 of different sewage plants is facilitated.
The second embodiment is as follows: the present embodiment differs from the present embodiment in that: stainless steel sectional shelf-unit 7 is cuboid frame construction, and stainless steel sectional shelf-unit 7's length width height is 2500mm 2000mm 2500mm respectively.
Other steps are the same as those in the first embodiment.
The third concrete implementation mode: the first or second differences from the present embodiment are as follows: the biomembrane blanket 2 is evenly distributed and arranged in parallel on the biomembrane blanket device 1 for sewage treatment, the thickness of the biomembrane blanket 2 is 30mm, and a supporting layer is arranged inside the biomembrane blanket.
The other steps are the same as those in the first or second embodiment.
The biomembrane blanket 2 is two, and the supporting layer is added in the middle, and the main worry is that the intensity of biomembrane blanket 2 is not enough, tears easily during the aeration, so increased netted nylon supporting layer, through sewing machine sewing, reach two upper and lower and the supporting layer in the middle part becomes an organic whole, increase and draw and drag tear strength.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is as follows: the clip 6 and the limiting hole are in transition fit.
The other steps are the same as those in the first to third embodiments.
The fifth concrete implementation mode: an engineering application method of a biomembrane blanket device for sewage treatment is completed according to the following steps:
with the vertical unsettled setting of biofilm blanket device 1 for sewage treatment in biochemical pond 8, and the orientation of placing of biofilm blanket device 1 for sewage treatment in biochemical pond 8 is that the surface of biofilm blanket 2 is parallel with sewage rivers direction, and biochemical pond 8's bottom needs to set up mud plug flow device, and mud plug flow device is apart from the bottom distance of biofilm blanket device 1 for sewage treatment not less than 1000 mm.
The beneficial effects of the embodiment are as follows:
the embodiment of the biomembrane blanket device for sewage treatment and the engineering application method can solve the problem that a newly-built sewage plant can install a microorganism carrier-biomembrane blanket 2 device quickly and efficiently, particularly can perform the non-stop water-lifting mark-expanding operation of the existing sewage plant-install the biomembrane blanket 2 device with water in the biochemical pool 8, can reduce the secondary pollution of the environment to the maximum extent, bring a large mark-lifting expanding space for the original sewage plant, greatly save the one-time investment cost and the ton water treatment cost for sewage plant modification, and simultaneously shorten the construction modification period and the difficulty. The engineering application method of the biomembrane blanket 2 for treating the sewage can realize a plurality of beneficial effects of benefit, efficiency, saving, environmental protection and the like. Compared with the prior art, the method can improve the sludge content of the biochemical system by 50-200%, improve the biological activity by 30-50% and improve the mass transfer efficiency by 20-30%.
The sixth specific implementation mode: the fifth embodiment is different from the fifth embodiment in that: when the biofilm blanket device 1 for sewage treatment is installed in the biochemical tank 8 by adopting a bottom bearing mode:
fixing the two ends of a supporting steel structure 10 on the inner wall of a biochemical pool 8 at a position 1200 mm-1800 mm above an aerator 11 at the bottom of the biochemical pool 8, then placing a glass fiber reinforced plastic grid on the upper end surface of the supporting steel structure 10, then placing a biomembrane blanket device 1 for sewage treatment on the glass fiber reinforced plastic grid, and finally fastening the biomembrane blanket device 1 for sewage treatment with the glass fiber reinforced plastic grid and the supporting steel structure 10 by using a fixing bolt 9, namely completing the installation of the biomembrane blanket device 1 for sewage treatment in a bottom bearing mode.
The other steps are the same as those in the fifth embodiment.
The seventh embodiment: the fifth or sixth embodiment is different from the specific embodiment in that: when the biomembrane blanket device 1 for sewage treatment is installed in the biochemical pond 8 by adopting an upper part fixing mode:
firstly, the biomembrane blanket device 1 for sewage treatment is connected with the lower part of the supporting steel structure 10, then the two ends of the upper part of the supporting steel structure 10 are fixed at the upper edge of the biochemical pool 8, and the distance between the biomembrane blanket device 1 for sewage treatment and the sewage surface in the biochemical pool 8 is not less than 300mm, namely, the biomembrane blanket device 1 for sewage treatment is installed in an upper part fixing mode.
The other steps are the same as in the fifth or sixth embodiment.
The specific implementation mode is eight: the fifth to seventh embodiments are different from the first to seventh embodiments in that: the support steel structure 10 is square steel, I-steel, channel steel or angle steel.
The other steps are the same as those in the fifth to seventh embodiments.
The specific implementation method nine: the fifth to eighth differences from the present embodiment are: the biofilm blanket device 1 for sewage treatment can be arranged in an anaerobic or anoxic zone.
The other steps are the same as those in the fifth to eighth embodiments.
The detailed implementation mode is ten: the fifth to ninth embodiments are different from the fifth to ninth embodiments in that: the connection between the biomembrane blanket device 1 for sewage treatment and the lower part of the support steel structure 10 is bolted connection or welding.
The other steps are the same as those in the fifth to ninth embodiments.
The following examples were used to demonstrate the beneficial effects of the present invention:
the first embodiment is as follows: a biomembrane blanket device for sewage treatment comprises a stainless steel combined support 7, a plurality of membrane blanket supporting stainless steel tubes 3 and a plurality of biomembrane blankets 2, wherein the stainless steel combined support 7 is of a cuboid frame structure, a plurality of circular holes 4 for fixing the membrane blankets are radially arranged on two long edges of a top end frame and a bottom end frame of the stainless steel combined support 7, fixing rings 5 are respectively arranged at the upper end and the lower end of each biomembrane blanket 2, and limiting holes are radially arranged on the side walls of the two ends of each membrane blanket supporting stainless steel tube 3;
on the top end face of the biomembrane blanket device 1 for sewage treatment, a membrane blanket supporting stainless steel tube 3 penetrates through a fixing ring 5 at the upper end of a biomembrane blanket 2, two ends of the membrane blanket supporting stainless steel tube 3 extend into a circular hole 4 of the fixed membrane blanket, and two clips 6 are respectively inserted into limiting holes at two ends of the membrane blanket supporting stainless steel tube 3; on the bottom end face of the biomembrane blanket device 1 for sewage treatment, the membrane blanket supporting stainless steel tube 3 penetrates through the fixing ring 5 at the lower end of the biomembrane blanket 2, the two ends of the membrane blanket supporting stainless steel tube 3 extend into the round holes 4 of the fixed membrane blanket, and the two clips 6 are respectively inserted into the limiting holes at the two ends of the membrane blanket supporting stainless steel tube 3.
The length, width and height of the stainless steel combined bracket 7 are 2500mm x 2000mm x 2500mm respectively, and the stainless steel combined bracket is formed by assembling 950mm x 450mm x 3mm stainless steel square pipes, can be assembled and disassembled, and is fixed by hexagon socket head cap bolts; the biological membrane blankets 2 are uniformly distributed and arranged in parallel on the biological membrane blanket device 1 for sewage treatment, the biological membrane blanket 2 is a plurality of groups of polyurethane biological membrane blankets, the thickness of the biological membrane blanket 2 is 30mm, and a supporting layer is arranged inside the biological membrane blanket; the center distance of the plurality of supporting stainless steel pipes is 100mm, the diameter is 25mm, and the thickness is 3 mm; the diameter of the fixing ring 5 is 30mm, the aperture of the limiting hole is 5mm, the distance from the short-distance end part is 43mm, and the clip 6 and the limiting hole are in transition fit.
Example two: an engineering application method of a biomembrane blanket device for sewage treatment is completed according to the following steps:
with the vertical unsettled setting of biofilm blanket device 1 for sewage treatment in biochemical pond 8, and the orientation of placing of biofilm blanket device 1 for sewage treatment in biochemical pond 8 is that the surface of biofilm blanket 2 is parallel with sewage rivers direction, and biochemical pond 8's bottom needs to set up mud plug flow device, and mud plug flow device is apart from the bottom distance of biofilm blanket device 1 for sewage treatment not less than 1000 mm.
When the biomembrane blanket device 1 for sewage treatment is arranged in the biochemical tank 8 in a bottom bearing mode:
fixing the two ends of a supporting steel structure 10 on the inner wall of a biochemical pool 8 at a position 1200 mm-1800 mm above an aerator 11 at the bottom of the biochemical pool 8, then placing a glass fiber reinforced plastic grid on the upper end surface of the supporting steel structure 10, then placing a biomembrane blanket device 1 for sewage treatment on the glass fiber reinforced plastic grid, and finally fastening the biomembrane blanket device 1 for sewage treatment with the glass fiber reinforced plastic grid and the supporting steel structure 10 by using a fixing bolt 9, namely completing the installation of the biomembrane blanket device 1 for sewage treatment in a bottom bearing mode.
The installation method of the bottom support in the step one is performed under the condition that the sewage treatment is stopped and the sewage in the biochemical pool 8 is emptied, is generally applied to a newly-built sewage plant and is more suitable for the waterless installation operation of the newly-built sewage plant.
Secondly, when the biomembrane blanket device 1 for sewage treatment is installed in the biochemical pond 8 by adopting an upper part fixing mode:
firstly, the biomembrane blanket device 1 for sewage treatment is connected with the lower part of the supporting steel structure 10, then the two ends of the upper part of the supporting steel structure 10 are fixed at the upper edge of the biochemical pool 8, and the distance between the biomembrane blanket device 1 for sewage treatment and the sewage surface in the biochemical pool 8 is not less than 300mm, namely, the biomembrane blanket device 1 for sewage treatment is installed in an upper part fixing mode.
The upper part fixing and mounting method in the step two can be used for water-carrying operation, is generally applied to a sewage plant water-uninterrupted operation mode, and is more suitable for in-situ water-uninterrupted upgrading and capacity expansion of a sewage plant. When the biomembrane blanket device 1 for sewage treatment is used for upgrading and expanding the volume of a sewage plant, the original structure and the aeration mode of the tank body are not changed, and only the biomembrane blanket device 1 for sewage treatment needs to be directly arranged in a biochemical aeration or anoxic tank according to requirements.
The biofilm blanket device 1 for sewage treatment in the first step and the second step can be arranged in an anaerobic or anoxic zone, a sludge plug flow device is required to be arranged at the bottom of the biological pond, the distance between the sludge plug flow device and the bottom of the biofilm blanket device 1 for sewage treatment is not less than 1000mm, the arrangement direction of the biofilm blanket device 1 for sewage treatment in the biochemical pond 8 is that the surface of the biofilm blanket 2 is parallel to the sewage flow direction and can not be perpendicular to the sewage flow direction, except for the upflow biochemical pond, the arrangement direction of the biofilm blanket device in the upflow biochemical pond is not required. The aerator 11 in the first step and the second step is an ultra-microporous aerator (with the pore diameter of 50um), the top of the aerator 11 is not higher than 300mm away from the bottom of the tank, the number of the aerators 11 per square meter is preferably 2-3 according to the water quality, and the distance between the aerator 11 and the bottom of the biological membrane blanket device 1 for sewage treatment is not less than 500 mm.
The biological film blanket 2 is a multi-group modified polyurethane biological film blanket, and the specific surface area of the biological film blanket is up to 3000m2/m3～4000m2/m3A large amount of microorganisms (12 ten thousand mg/L) can be loaded, and because the bottom is oxygenated and aerated, the activity of the biological membrane on the membrane blanket is always kept, the biological membrane blanket 2 is disturbed continuously in the aeration process, the material mass transfer and transportation efficiency is increased, the degradation and synthesis of organic matters can be realized quickly, and the water body purification is accelerated. Meanwhile, as the thickness of the membrane blanket is 30mm, three layers of anaerobic, anoxic and aerobic environments which are constantly changed are formed from the inside, the middle and the outside, synchronous nitrification and denitrification can be realized, the rapid degradation of pollutants and nitrogenous organic matters in a water body is accelerated, the diameter of a superfine monofilament (0.03mm) and the extremely high aperture ratio (>99%) to provide a more stable and comfortable biofilm living space for microorganisms on the membrane blanket. Under the interrupted or uninterrupted aeration disturbance state, the biological membrane blanket 2 can not cause the hardening of the membrane blanket due to the unsmooth mass transfer and the falling of the biological membrane, thereby improving the water purification effect and prolonging the service life.
By adopting the biomembrane blanket device for sewage treatment and the engineering application method thereof, more suitable living environment and inhabitation space are provided for microorganism propagation, the growth of microorganism flora is accelerated, the sludge concentration of a biochemical system is improved, the water purification efficiency of the biochemical system is improved, the sludge amount of the original biochemical system can be improved by 50-200%, the biological activity is improved by 30-50%, and the mass transfer efficiency is improved by 20-30%.
Claims (10)
1. A biomembrane blanket device for sewage treatment is characterized in that the biomembrane blanket device (1) for sewage treatment comprises a stainless steel combined support (7), a plurality of membrane blanket supporting stainless steel tubes (3) and a plurality of biomembrane blankets (2), wherein a plurality of circular holes (4) for fixing the membrane blankets are radially arranged on two long edges of a top end frame and a bottom end frame of the stainless steel combined support (7), fixing rings (5) are respectively arranged at the upper end and the lower end of each biomembrane blanket (2), and limiting holes are radially arranged on the side walls at the two ends of each membrane blanket supporting stainless steel tube (3);
on the top end face of a biological membrane blanket device (1) for sewage treatment, a membrane blanket supporting stainless steel pipe (3) penetrates through a fixing ring (5) at the upper end of a biological membrane blanket (2), two ends of the membrane blanket supporting stainless steel pipe (3) extend into a circular hole (4) of the fixed membrane blanket, and two clamps (6) are respectively inserted into limiting holes at two ends of the membrane blanket supporting stainless steel pipe (3); on the bottom end face of the biomembrane blanket device (1) for sewage treatment, the membrane blanket supporting stainless steel tube (3) penetrates through a fixing ring (5) at the lower end of the biomembrane blanket (2), the two ends of the membrane blanket supporting stainless steel tube (3) extend into a round hole (4) of the fixed membrane blanket, and two clips (6) are respectively inserted into limiting holes at the two ends of the membrane blanket supporting stainless steel tube (3).
2. A biofilm carpet device for sewage treatment according to claim 1, characterized in that the stainless steel assembly bracket (7) has a rectangular frame structure, and the length, width and height of the stainless steel assembly bracket (7) are 2500mm 2000mm 2500mm respectively.
3. The biofilm carpet device for sewage treatment as in claim 1, wherein the biofilm carpets (2) are arranged evenly and in parallel on the biofilm carpet device (1) for sewage treatment, the thickness of the biofilm carpets (2) is 30mm, and a supporting layer is arranged inside.
4. The biofilm carpet device for sewage treatment as in claim 1, wherein the clip (6) and the limiting hole are in transition fit.
5. An engineering application method of a biomembrane blanket device for sewage treatment is characterized by comprising the following steps:
the vertical suspension of the biomembrane blanket device (1) for sewage treatment is arranged in a biochemical pool (8), the placing direction of the biomembrane blanket device (1) for sewage treatment in the biochemical pool (8) is parallel to the surface of the biomembrane blanket (2) and the sewage water flow direction, the bottom of the biochemical pool (8) is required to be provided with a sludge plug-flow device, and the distance from the sludge plug-flow device to the bottom of the biomembrane blanket device (1) for sewage treatment is not less than 1000 mm.
6. The method for engineering application of the biofilm carpet device for sewage treatment as in claim 5, is characterized in that when the biofilm carpet device for sewage treatment (1) is installed in the biochemical pool (8) by adopting a bottom supporting mode:
fixing the two ends of a supporting steel structure (10) on the inner wall of a biochemical pool (8) at a position 1200-1800 mm above an aerator (11) at the bottom of the biochemical pool (8), then placing a glass fiber reinforced plastic grid on the upper end surface of the supporting steel structure (10), then placing a biomembrane blanket device (1) for sewage treatment on the glass fiber reinforced plastic grid, and finally fastening the biomembrane blanket device (1) for sewage treatment with the glass fiber reinforced plastic grid and the supporting steel structure (10) by using a fixing bolt (9), namely finishing the installation of the biomembrane blanket device (1) for sewage treatment in a bottom bearing mode.
7. The method for engineering application of the biofilm carpet device for sewage treatment as in claim 5, is characterized in that when the biofilm carpet device for sewage treatment (1) is installed in the biochemical pool (8) by adopting the upper fixing mode:
firstly, the biomembrane blanket device (1) for sewage treatment is connected with the lower part of the supporting steel structure (10), then the two ends of the upper part of the supporting steel structure (10) are fixed at the upper edge of the biochemical pool (8), and the distance between the biomembrane blanket device (1) for sewage treatment and the sewage surface in the biochemical pool (8) is not less than 300mm, namely the biomembrane blanket device (1) for sewage treatment is installed in an upper part fixing mode.
8. The engineering application method of the biofilm carpet device for sewage treatment as in claim 6 or 7, characterized in that the supporting steel structure (10) is a square steel, an I-shaped steel, a channel steel or an angle steel.
9. The method for engineering application of a biofilm carpet device for sewage treatment as in claim 6 or 7, characterized in that the biofilm carpet device for sewage treatment (1) can be arranged in an anaerobic or anoxic zone.
10. The method for engineering application of the biofilm carpet device for sewage treatment as in claim 7, wherein the connection between the biofilm carpet device for sewage treatment (1) and the lower part of the supporting steel structure (10) is bolt connection or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911212285.4A CN110790398A (en) | 2019-12-02 | 2019-12-02 | Biological membrane blanket device for sewage treatment and engineering application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113213707A (en) * | 2021-05-31 | 2021-08-06 | 工大环境股份有限公司 | Process method for municipal sewage in-situ standard-lifting and capacity-expanding |
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| CN205187976U (en) * | 2015-03-25 | 2016-04-27 | 上海凡清环境工程有限公司 | Fold biological catalytic oxidation device of formula and suspension type |
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