Combined efficient aeration device
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a be applied to rural sewage treatment equipment's high-efficient aeration equipment of combination formula.
Background
In the treatment of urban or rural domestic sewage, A/O or A2the/O is the most common process technology, has wide industrial application and mature technology. And in distributed point source sewage treatment A2In the/O treatment process, because the required equipment model is small, the treatment capacity is small, and the forced draft aeration oxygenation is required, the forced draft aeration oxygenation has the functions of ensuring the rolling state of aerobic filler in an aerobic area on one hand, and charging oxygen in the aerobic area of a sewage treatment system on the other hand, controlling the dissolved oxygen of the aerobic area to be more than 5mg/L, ensuring the growth and the propagation of aerobic bacteria, and oxidizing the productive metabolic process of organic matters or inorganic matters.
Different distributed sewage treatment processes and various oxygenation methods in an aerobic zone comprise micropore aeration, perforation aeration, micro-nano aeration, a dynamic jet aerator and the like.
The Chinese patent publication No. CN109502777A discloses a high-efficiency jet injector, which performs high-efficiency jet aeration and oxygenation by gas-liquid mixing and pumping, and although the mass transfer effect of the jet mode is improved, the aeration efficiency is improved to a certain extent, a power device is needed, the operation cost is increased, and gas-liquid mixing is needed, organic carbon in sewage is digested by aerobic bacteria, so that the carbon source in an anoxic and anaerobic zone at the front end is insufficient, and the carbon source needs to be additionally supplemented, and the operation cost is increased.
The device conveys sewage into a bubble generator through a power device, a gas-liquid mixture is obtained and then goes downwards, the bubbles of about 1mm are obtained through a bubble refiner, and the gas-liquid mixture is aerated and oxygenated from the bottom in the horizontal direction in an inclined upward manner. On one hand, the device can ensure the retention time of oxygen, but a pumping system is needed to ensure the uniformity of gas-liquid mixing, and the power of a sewage pump is far greater than that of an air pump, so that the energy consumption is much higher than that of a system without the pumping system; on the other hand, the problems that organic carbon in sewage is digested by aerobic bacteria due to gas-liquid mixing and a carbon source in a front end anoxic-anaerobic zone is insufficient exist, and the carbon source needs to be additionally supplemented, so that the operation cost is increased.
The novel micro-nano aeration machine disclosed in the patent with the Chinese patent publication No. CN208603846U is used for stirring and mixing oxygen generated by an oxygen generator with air and then pressurizing, aerating and oxygenating in a pressurizing mode, and although the method has good dispersion effect, the method has the advantages that the movement speed of pressurized gas is high, the retention time is too short, and the utilization rate of oxygen is not high; in addition, the pressurization process and the stirring process need additional consumption of power and energy, and the operation cost is increased.
The micro-nano hole aeration pipe disclosed in the patent with the Chinese patent publication No. CN208632221U has the advantages of simple structure, convenient assembly and disassembly and good oxygenation effect; however, in the case of a slightly large aerobic zone, when the observation port is small, the device is difficult to assemble and disassemble; and because the elastic micro-nano hole pipe is sleeved outside, the hole diameter is small, the turning effect of the whole aerobic zone is difficult to form, the filling is easy to accumulate, the influence on the mass transfer process and the digestion effect is great, and the elastic micro-nano hole pipe is particularly not suitable for the aerobic zone of the sponge filling, because the filling of sponges easily grows a thick biological film, and the sponge filling with a certain weight is turned under the pressure formed by micro-nano hole bubbles.
Although the aeration device disclosed in the patent with the Chinese patent publication No. CN207877403U has a simple structure, the aeration effect of the micro-nano holes is difficult to form by the air pressure, the mass transfer effect of a biological film on the filler and organic matters in sewage is insufficient, the contact time is short, and the digestion effect is influenced.
To sum up, the traditional modes such as simple perforation aeration, micro-nano hole aeration, power jet aeration have the defects of high power consumption cost, incapability of forming a stirring effect to influence digestion, easiness in blockage of micro-nano holes, inconvenience in disassembly and assembly, need of additionally adding a carbon source and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a modular high-efficient aeration equipment, it has the good effect of stirring, ensures the oxygenation effect in good oxygen district, and the installation is dismantled conveniently, can regularly clear up the biomembrane on the little nanometer hole, reduces equipment installation power and power consumption, reduces raw materials consumption, improves economic benefits to but the nimble distributed domestic sewage treatment system who is applied to different treatment scales.
In order to realize the purpose of the utility model, the utility model discloses a technical scheme as follows:
a combined type efficient aeration device comprises a device body, wherein an access hole is formed in the top of the device body, a support frame, a perforated sleeve, a perforated pipe and a micro-nano aeration rubber hose are arranged in the device body, the support frame is arranged at the bottom of the device body, the perforated sleeve comprises a bottom pipe and a vertical pipe, the bottom pipe of the perforated sleeve is arranged on the support frame, one end of the vertical pipe of the perforated sleeve is connected with the bottom pipe, the other end of the vertical pipe penetrates out of the access hole, and the micro-nano aeration rubber hose is sleeved in the perforated sleeve; the perforated pipe comprises a perforated bottom pipe and a perforated vertical pipe, the perforated bottom pipe is arranged on the supporting frame, one end of the perforated vertical pipe is connected with the perforated bottom pipe, and the other end of the perforated vertical pipe penetrates out of the access hole.
Preferably, an elbow is arranged at the joint of the bottom pipe and the riser of the perforated casing pipe, and the bending angle of the elbow is 135 degrees.
Preferably, the bottom pipe of the perforated casing is of a U-shaped structure, one end of a U-shaped opening of the bottom pipe is connected with the vertical pipe, the micro-nano aeration rubber hose is sleeved in the bottom pipe and the vertical pipe of the perforated casing, and the micro-nano aeration rubber hose is arranged at the other end of the U-shaped opening and is provided with a hose plug; the two perforated sleeves are symmetrically arranged, and bottom pipes of the two perforated sleeves form a clip structure.
Preferably, the perforated bottom pipe is arranged between the bottom pipes of the two perforated sleeves in the zigzag structure, the perforated bottom pipe comprises a first perforated bottom pipe and a second perforated bottom pipe, one end of the first perforated bottom pipe is connected with the middle part of the second perforated bottom pipe, and the other end of the first perforated bottom pipe is connected with the perforated vertical pipe.
Preferably, the perforated casing is made of PVC-U, perforations are uniformly formed in the bottom pipe of the perforated casing along the periphery of the pipe wall, the aperture of each perforation is 5-10mm, 4-6 perforations are distributed at intervals of 5-10cm, and a vertical pipe of the perforated casing is not provided with the perforations.
Preferably, micro-nano holes are distributed on the micro-nano aeration rubber hose along the periphery of the hose wall, the outer diameter of the micro-nano aeration rubber hose is 16-20mm, the wall thickness is 3-8mm, the aperture of the micro-nano holes on the hose is 0.02-0.05mm, and the hole distance is 100-300 mm; the diameter of the micro-nano hole bubbles is 0.5-2mm, and the arrangement density of the micro-nano holes is 600-2。
Preferably, the ratio of the outer diameter of the perforated sleeve to the outer diameter of the micro-nano aeration rubber hose is greater than or equal to 2.5.
Preferably, the perforated pipe is made of PVC-U, the aperture of the perforated pipe is 15-32mm, the perforated bottom pipe is uniformly provided with air holes along the periphery of the pipe wall, 1 air hole is distributed at intervals of 5-10cm, the aperture of each air hole is 1-8mm, and the opening direction of each air hole is downward.
Preferably, the support frame includes a horizontal support frame and a vertical support frame, the horizontal support frame is disposed above the vertical support frame, and the vertical support frame is disposed at the bottom of the inner wall of the device body.
Preferably, the material of support frame is glass steel or PVC, the vertical support frame passes through glue and bonds in the inner wall bottom of device body.
The air inlet of the perforated pipe and the air inlet of the micro-nano aeration rubber hose share one air blowing air pump, and a gas flow dividing switch is arranged, so that the air flow is conveniently adjusted. After the aerobic system of the rural sewage treatment equipment is oxygenated by the micro-nano aeration, the dissolved oxygen amount reaches more than 5mg/L, and the effluent meets the first-class B standard of pollutant discharge Standard of urban sewage treatment plant (GB 18918-2002).
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
(1) the utility model has the advantages that the pore openings of the perforated pipes used in the device are downward, the air flow is large, the air comes out from the pores and then impacts the bottom of the rural sewage treatment equipment, the reverse flow is upward, the large impulsive force forms the stirring effect of the whole aerobic area, the mass transfer effect is strengthened, and the digestion effect is improved;
(2) the utility model discloses the micro-nano aeration rubber hose of device can regularly dismantle the washing, can prevent that micro-nano hole from blockking up, because the rubber hose that uses, has designed two 135 elbows in addition and has constituteed to set for with the sheathed tube diameter proportion of perforation, micro-nano aeration rubber hose can be convenient freely dismantle and install.
(3) The utility model needs no extra pumping power, only needs the blast air pump, has smaller power, saves the energy consumption of sewage pumping, has low power consumption and low investment and operation cost;
(4) the utility model discloses the aeration is oxygenated owing to adopt micro-nano and the mode of perforation pipe combination to the device, can adjust aeration mode and aeration rate in a flexible way, and it is less to intake the water quality requirement to sewage, and shock resistance is strong.
(5) The utility model discloses the device need not additionally to add the carbon source, and reduce cost improves economic benefits to but the nimble distributed domestic sewage treatment system who is applied to different treatment scales of being used in.
Drawings
Fig. 1 is a top view of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is a schematic structural view of the bottom tube of the perforated casing of the present invention;
FIG. 4 is a schematic structural view of the micro-nano aeration rubber hose of the present invention;
FIG. 5 is a schematic structural view of the perforated pipe of the present invention;
fig. 6 is a schematic structural view of the perforated bottom tube of the present invention.
In the figure, 1-a device body, 2-a support frame, 3-a perforated sleeve, 4-a micro-nano aeration rubber hose, 5-a micro-nano hole, 6-a hose plug, 7-an elbow, 8-a perforated bottom pipe, 9-an air hole, 10-an access hole, 11-a perforation, 201-a horizontal support frame, 202-a vertical support frame, 301-a bottom pipe, 302-a vertical pipe, 801-a first perforated bottom pipe and 802-a second perforated bottom pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description will be given of preferred embodiments and further detailed description of the present invention. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
As shown in fig. 1-2, the utility model discloses a combined high-efficiency aeration device, including device body 1, the top of device body 1 is provided with access hole 10, be provided with support frame 2, perforated sleeve 3, perforated pipe and micro-nano aeration rubber hose 4 in the device body 1, support frame 2 sets up in the bottom of device body 1, perforated sleeve 3 includes bottom tube 301 and riser 302, bottom tube 301 of perforated sleeve 3 sets up on support frame 2, riser 302 one end of perforated sleeve 3 is connected with bottom tube 301, and the other end wears out outside access hole 10, aeration micro-nano rubber hose 4 is located in perforated sleeve 3; the perforated pipe includes the perforated bottom pipe 8 and the perforated riser, the perforated bottom pipe 8 set up in on the support frame 2, the one end of the perforated riser is connected with the perforated bottom pipe 8, and the other end of the perforated riser is worn out outside the manhole 10: an elbow 7 is arranged at the joint of the bottom pipe 301 and the riser 302 of the perforated casing 3, and the bending angle of the elbow 7 is 135 degrees; the support frame 2 comprises a horizontal support frame 201 and a vertical support frame 202, the horizontal support frame 201 is arranged above the vertical support frame 202, and the vertical support frame 202 is arranged at the bottom of the inner wall of the device body 1; the material of support frame 2 is glass steel or PVC, the vertical support frame 202 through glue bond in the inner wall bottom of device body 1 for support perforated casing 3 and perforated pipe 8.
As shown in fig. 3 and 5, the bottom tube 301 of the perforated casing 3 is of a U-shaped structure, one end of the U-shaped opening of the bottom tube 301 is connected to the vertical tube 302, the micro-nano aeration rubber hose 4 is sleeved in the bottom tube 301 and the vertical tube 302 of the perforated casing 3, and the micro-nano aeration rubber hose 4 is arranged at the other end of the U-shaped opening and provided with a hose plug 6; the two perforated sleeves 3 are symmetrically arranged, and the bottom pipes 301 of the two perforated sleeves 3 form a clip-shaped structure; the perforated casing 3 is made of PVC-U, perforations 11 are uniformly formed in the bottom pipe 301 of the perforated casing 3 along the periphery of the pipe wall, the aperture of each perforation 11 is 5-10mm, 4-6 perforations 11 are distributed at intervals of 5-10cm, and a vertical pipe 302 of the perforated casing 3 is not provided with perforations.
As shown in fig. 6, the perforated bottom pipe 8 is disposed between the bottom pipes 301 of the two perforated casings 3 in a zigzag structure, the perforated bottom pipe 8 includes a first perforated bottom pipe 801 and a second perforated bottom pipe 802, one end of the first perforated bottom pipe 801 is connected to the middle of the second perforated bottom pipe 802, and the other end is connected to the perforated riser. The perforated pipe is made of PVC-U, the aperture of the perforated pipe is 15-32mm, the perforated bottom pipe 8 is uniformly provided with air holes 9 along the periphery of the pipe wall, 1 air hole 9 is distributed at intervals of 5-10cm, the aperture of each air hole 9 is 1-8mm, and the opening direction of each air hole is downward.
As shown in fig. 4, the micro-nano aeration rubber hose 4 is distributed with micro-nano holes along the periphery of the hose wall, the outer diameter of the micro-nano aeration rubber hose 4 is 16-20mm, the wall thickness is 3-8mm, and the hose is flexibleThe aperture of the micro-nano hole 5 is 0.02-0.05mm, and the hole distance is 100-300 mm; the diameter of the bubbles in the micro-nano holes 5 is 0.5-2mm, and the arrangement density of the micro-nano holes 5 is 600-2(ii) a The ratio of the outer diameter of the perforated sleeve 3 to the outer diameter of the micro-nano aeration rubber hose 4 is greater than or equal to 2.5.
The air comes out from an external air pump, and the micro-nano aeration rubber hose 4 penetrates through the access hole and is connected with the external air pump; after the gas is shunted by the shunt gas valve, a part of gas enters a bottom pipe 301 of the perforated casing 3 along a 135-degree elbow 7 at the bottom through a vertical pipe 302 of the perforated casing 3, enters the bottom of the micro-nano aeration rubber hose 4 in the perforated casing 3 during the process until reaching the position of a hose plug 6, and penetrates out of the micro-nano hole 5 and passes through a perforation 11 of the perforated casing 3;
another part of the gas of air pump extends a perforation bottom tube 8 from the manhole 10 through the perforation riser through the reposition of redundant personnel pneumatic valve reposition of redundant personnel back, and perforation bottom tube 8 includes and is the first perforation bottom tube 801 and the second perforation bottom tube 802 that T type distributes at the equipment bottom, and gas comes out from gas pocket 9, can realize even gas distribution purpose.
The utility model discloses the theory of operation of device:
starting an air pump, wherein the air pump is divided into two streams of gas through a ball valve, one stream of gas passes through a perforated pipe and is flushed with oxygen from an air hole 9 of a perforated bottom pipe 8 to an aerobic area of the rural sewage treatment system, the gas forms larger impulsive force due to large gas flow, and the gas forms a good rolling effect when entering the system for oxygenation, so that the mass transfer process and the digestion effect are facilitated; another strand of gas vertically enters the micro-nano aeration rubber hose 4 at the bottom through the micro-nano aeration rubber hose 4 downwards, the gas penetrates out of the micro-nano holes 5 and then passes through the perforation 11 of the perforated casing 3 to flush oxygen to an aerobic area of the rural sewage treatment system, the gas has small bubble particle size, large contact surface area, good mass transfer process and high oxygen utilization rate, and the dissolved oxygen of the system can reach more than 5 mg/l; when the micro-nano holes 5 on the micro-nano aeration rubber hose 4 are blocked, the micro-nano aeration rubber hose can be freely disassembled and cleaned, and then the micro-nano aeration rubber hose is installed; the perforated sleeve 3 is used for bearing the micro-nano aeration rubber hose 4; the bottom end of a vertical support frame 202 of the support frame 2 is fixed at the bottom of rural sewage treatment equipment by glue, and a horizontal support frame 201 supports the perforated casing pipe 3 and the perforated bottom pipe 8;
to sum up, adopt the utility model discloses the device compares with modes such as simple perforation aeration, micro-nano hole aeration, power injection aeration, has following advantage:
(1) good turning effect, ensuring the oxygenation effect of the aerobic zone to be more than 5 mg/L;
(2) the assembly and disassembly are convenient, and the biological membrane on the micro-nano hole can be cleaned regularly;
(3) the installed power of the equipment is reduced by 0.2KW, the installed power is calculated according to the daily treatment capacity of 10m3, the electricity price is calculated to be 0.9 yuan/kwh, and the operating cost of sewage treatment is reduced by 0.432 yuan/ton;
(4) the raw material consumption is reduced, no additional carbon source is required to be added, and the economic benefit can be improved by more than 10%;
(5) can be flexibly applied to distributed domestic sewage treatment systems with different treatment scales.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.