CN220376500U - Domestic sewage treatment system and device thereof - Google Patents
Domestic sewage treatment system and device thereof Download PDFInfo
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- CN220376500U CN220376500U CN202320135426.2U CN202320135426U CN220376500U CN 220376500 U CN220376500 U CN 220376500U CN 202320135426 U CN202320135426 U CN 202320135426U CN 220376500 U CN220376500 U CN 220376500U
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- 239000010865 sewage Substances 0.000 title claims abstract description 66
- 238000006243 chemical reaction Methods 0.000 claims abstract description 162
- 239000000945 filler Substances 0.000 claims abstract description 95
- 239000002131 composite material Substances 0.000 claims abstract description 70
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 38
- 238000001556 precipitation Methods 0.000 claims abstract description 37
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- 230000003197 catalytic effect Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 238000010992 reflux Methods 0.000 claims description 47
- 239000007789 gas Substances 0.000 claims description 44
- 239000010802 sludge Substances 0.000 claims description 39
- 238000005273 aeration Methods 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 21
- 230000001546 nitrifying effect Effects 0.000 claims description 15
- 241000894006 Bacteria Species 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000012806 monitoring device Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 5
- 239000003463 adsorbent Substances 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 206010021143 Hypoxia Diseases 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 9
- 238000005842 biochemical reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
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- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 230000020477 pH reduction Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 238000005243 fluidization Methods 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
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- 230000003068 static effect Effects 0.000 description 3
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- 230000001580 bacterial effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 239000003344 environmental pollutant Substances 0.000 description 2
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- 231100000719 pollutant Toxicity 0.000 description 2
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- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
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- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
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- 239000013589 supplement Substances 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The application relates to a domestic sewage treatment system and device thereof, wherein, domestic sewage treatment system includes, anaerobic reaction unit, anoxic reaction unit, composite filler aerobic reaction unit, settling unit that stands, disinfection unit and tail gas treatment unit, and the device includes: the device comprises a device main body, wherein an anaerobic reaction cavity, an anoxic reaction cavity, a composite filler aerobic reaction cavity, a standing precipitation cavity, a disinfection cavity and a tail gas treatment cavity are sequentially connected in series in the device main body, the device and the added medicament arranged in the cavity are connected in front-back mode, the stable and rapid starting of the biochemical reaction is ensured, a nitrification and denitrification reaction unit is arranged and flows back to the front section in a large flow mode, the treatment effect is improved, the composite filler aerobic reaction unit is added with a porous flat column filler to strengthen the nitrification process, the rapid biochemical reaction is facilitated, and the starting time of the device is shortened. The equipment is operated in a full-sealed and micro-negative pressure mode, and is sterilized and disinfected by utilizing an ultraviolet catalytic oxidation technology, so that the safety treatment of toxic tail gas in epidemic situations is ensured to the greatest extent. The equipment adopts integrated design, satisfies the demand of quick installation, quick start.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to a domestic sewage treatment system and a device thereof.
Background
The integrated sewage treatment equipment is suitable for treating and recycling domestic sewage of residential communities, villages and towns, office buildings, markets, hotels, restaurants, sanatoriums, institutions, schools, armies, hospitals, highways, railways, factories, mines, tourist attractions and the like and small and medium-sized industrial organic wastewater of slaughtering, aquatic product processing, food and the like. The method mainly comprises the process steps of hydrolysis acidification, contact oxidation, impurity precipitation, disinfection treatment and sludge aerobic digestion, and the generated sewage is treated and purified, so that the purified sewage and tail gas are discharged after meeting the national discharge standard. The contact oxidation step is to degrade and purify most of organic matters in the original sewage, the biological bacteria takes the filler as a carrier, and the organic matters in the sewage are utilized as foodstuff to decompose the organic matters in the sewage into inorganic salts, so that the aim of purification is achieved, and the living of the biological bacteria is required to have enough oxygen, namely enough dissolved oxygen in the sewage to achieve the aim of biochemical treatment.
Among them, in places such as isolation points and hospitals where an integrated sewage treatment apparatus that is rapidly installed and used can be installed, however, the generation and cultivation of biological bacteria require a lot of time, about two weeks, thereby increasing the start-up time of the whole sewage treatment apparatus.
Therefore, how to increase the start-up time of the whole system, so that the sewage treatment device can be started up and used quickly after being installed, is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, this application provides a domestic sewage treatment system, shortens the start-up time of system greatly, promotes sewage treatment's efficiency.
According to an aspect of the present application, there is provided a domestic sewage treatment system comprising: the device comprises an anaerobic reaction unit, an anoxic reaction unit, a composite filler aerobic reaction unit, a standing precipitation unit, a disinfection unit and a tail gas treatment unit; the anaerobic reaction unit, the anoxic reaction unit, the composite filler aerobic reaction unit, the standing precipitation unit, the disinfection unit and the tail gas treatment unit are sequentially connected; the bottom of the composite filler aerobic reaction unit is provided with a microporous aeration device, filler, biological bacteria and adsorbent are added into the microporous aeration device, and the filler is of a porous and flat column-shaped structure.
In one possible implementation, the sewage treatment system further includes: a nitrifying liquid reflux unit and a sludge reflux unit; the input end of the nitrifying liquid reflux unit is connected with the composite filler aerobic reaction unit, and the output end of the nitrifying liquid reflux unit is connected with the anaerobic reaction unit; the input end of the sludge reflux unit is connected with the standing precipitation unit, and the output end of the sludge reflux unit is connected with the anoxic reaction unit.
An apparatus comprising the above-described domestic sewage treatment system and a device main body; the equipment main body is of a hollow sealing structure, and an anaerobic reaction cavity, an anoxic reaction cavity, a composite filler aerobic reaction cavity, a standing precipitation cavity, a disinfection cavity and a tail gas treatment cavity are sequentially communicated with the inside of the equipment main body; and the inside of the composite filler aerobic reaction cavity is provided with a microporous aeration device, the microporous aeration device is paved at the bottom of the composite filler aerobic reaction cavity, and the air outlet direction of the air outlet hole of the microporous aeration device faces to the top of the composite filler aerobic reaction cavity, so that the disturbance filler is fluidized.
In one possible implementation, the anaerobic reaction chamber includes: the device comprises a quick connector, a water inlet filtering device and a hydraulic stirring device; the water inlet filtering device is arranged at the top end of the inside of the anaerobic reaction cavity and is connected with the outside through the quick connector; the hydraulic stirring device is arranged in the anaerobic reaction and is positioned below the water inlet filtering device, and the stirring direction of the hydraulic stirring device is set around the length direction of the water inlet filtering device.
In one possible implementation, the anoxic reaction chamber includes: a perforated aeration device and a flexible carbon fiber filler; the whole flexible carbon fiber filler is of a curtain structure and is paved at the middle position inside the anoxic reaction cavity along the horizontal direction of the equipment main body; the perforation aeration device is arranged at the bottom end of the inside of the anoxic reaction cavity, is positioned below the flexible carbon fiber filler, and the aeration direction of the perforation aeration device faces the bottom of the anoxic reaction cavity.
In a possible implementation manner, the composite filler aerobic reaction cavity further comprises a nitrifying liquid gas stripping reflux device, a water inlet interception device and a water outlet interception device; the water inlet interception device is of a hollow structure, is communicated with the input end of the composite filler aerobic reaction cavity, and is provided with a through hole; the water outlet interception device is of a hollow structure, is communicated with the output end of the composite filler aerobic reaction cavity, and is provided with a through hole; the nitrifying liquid stripping reflux device comprises: the first air inlet pipe, the first water discharge vertical pipe and the first water discharge horizontal pipe; the first drainage standpipe is vertical, just first drainage standpipe is top sealed, bottom open-ended structure, the one end of first drainage violently manage with the top of first drainage standpipe is linked together, and the other end communicates to the inside of oxygen deficiency reaction cavity, first intake pipe one end with the lateral wall bottom of first drainage standpipe is linked together, and the other end is applicable to and connects the fan.
In one possible implementation, the stationary precipitation chamber includes: the device comprises a first plate body, a cone hopper, a sludge gas stripping reflux device and an inclined plate; the cone hopper is arranged at the bottom end of the interior of the standing precipitation cavity, the opening faces the upper side of the standing precipitation cavity, the first plate body is vertically arranged and separates the standing precipitation cavity, the top and two sides of the first plate body are in sealing connection with the standing precipitation cavity, a first preset distance is reserved between the bottom of the first plate body and the cone hopper, a plurality of inclined plates are arranged, and the inclined plates are obliquely paved above the cone hopper and are connected with the inner side wall of the standing precipitation cavity; the sludge stripping reflux device comprises: the second air inlet pipe, the second water discharge vertical pipe and the second water discharge horizontal pipe; the second drainage standpipe is vertically arranged, the second drainage standpipe is of a structure with a sealed top and an open bottom, one end of the second drainage transverse pipe is communicated with the top of the second drainage standpipe, the other end of the second drainage transverse pipe is communicated to the inside of the anaerobic reaction cavity, one end of the second air inlet pipe is communicated with the bottom of the side wall of the second drainage standpipe, and the other end of the second air inlet pipe is suitable for being connected with a fan; and an evacuation port is formed in the bottom of the standing precipitation cavity.
In one possible implementation, the disinfection chamber comprises: baffle plate, metering pump and residual chlorine detection device; the baffle plate is vertically arranged in the disinfection cavity to separate the input end and the output end of the disinfection cavity, the top and the two sides of the baffle plate are connected with the interior of the disinfection cavity, a second preset distance is reserved between the bottom of the baffle plate and the bottom of the disinfection cavity, and the metering pump and the residual chlorine detection device are arranged in the disinfection cavity; the top end of the side wall of the disinfection cavity is provided with a supernatant outlet.
In one possible implementation, the exhaust treatment cavity includes: the device comprises a tail gas collecting pipeline, an ultraviolet catalytic oxidation treatment device, a pressure monitoring device, an induced draft fan and a chimney; the ultraviolet light catalytic oxidation processing apparatus and the pressure monitoring device are arranged in the tail gas collecting pipeline, one end of the tail gas collecting pipeline is communicated with the first vent hole, the other end of the tail gas collecting pipeline is sequentially communicated with the ultraviolet light catalytic oxidation processing apparatus and the induced draft fan, the pressure monitoring device is arranged on the tail gas collecting pipeline, the chimney is communicated with the induced draft fan, and the other end of the chimney penetrates to the outside of the equipment main body.
The domestic sewage treatment system of the embodiment of the application has the beneficial effects that: through six processing units which are connected in front and back, a biochemical reaction system can be ensured to be started stably and quickly, a nitrification and denitrification reaction unit is arranged and flows back to the front section at a large flow, the treatment effect is improved, the composite filler aerobic reaction unit is added with porous flat column filler to strengthen the nitrification process, the rapid biochemical reaction is facilitated, and compared with the traditional sewage treatment process, the starting time is shortened by 50%. Moreover, the composite filler added into the composite filler aerobic reaction cavity adopts porous flat column-shaped filler, the true density of the filler is 1005kg/m < 3 >, fluidization is formed under the disturbance of a microporous aeration device, biological bacteria can grow rapidly to form a biological film in the composite filler, and biological bacteria and an adsorbent are added into the composite filler aerobic reaction cavity, so that the biological film can be adhered to the composite filler rapidly, and the overall starting time of the system is shortened greatly. The equipment is operated in a full-sealed and micro-negative pressure mode, and is sterilized and disinfected by utilizing an ultraviolet catalytic oxidation technology, so that the safety treatment of toxic tail gas in epidemic situations is ensured to the greatest extent. The equipment adopts an integrated design, is integrally transported, is hoisted in place on site, is installed in zero on site, can be filled with water in place, and meets the requirements of quick installation and quick start of epidemic situation isolation points.
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the present application and together with the description, serve to explain the principles of the present application.
FIG. 1 shows a schematic diagram of the body connections of a domestic sewage treatment system according to an embodiment of the present application;
fig. 2 is a schematic view showing a main body structure of a domestic sewage treatment apparatus according to an embodiment of the present application;
fig. 3 shows a side view schematic diagram of a main body structure of an apparatus main body according to an embodiment of the present application;
fig. 4 shows a schematic diagram of the main structure of the nitrified liquid stripping reflux device according to the embodiment of the present application.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
It should be understood, however, that the terms "center," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits have not been described in detail as not to unnecessarily obscure the present application.
Fig. 1 shows a schematic diagram of the main body connection of the domestic sewage treatment system according to an embodiment of the present application. As shown in fig. 1, the domestic sewage treatment system according to the embodiment of the present application includes: the anaerobic reaction unit 210, the anoxic reaction unit 220, the composite filler 133 aerobic reaction unit 230, the standing precipitation unit 240, the disinfection unit 250 and the tail gas treatment unit 260 are combined in six treatment units and are connected in front and back to form a complete treatment system. Wherein, the dissolved oxygen of an aerobic reaction unit 230 of the composite filler 133 is controlled to be 3-4 mg/L, the composite filler 133 is added into the reaction unit, and fluidization is formed by utilizing a microporous aeration device 132 at the bottom, the interior of the composite filler 133 adapts to the growth and propagation of microorganisms, and nitrifies, and further organic matters in sewage are decomposed into inorganic matters, thereby achieving the purpose of removing pollutants, and the composite filler 133 of the reaction unit adopts porous flat column-shaped filler with the true density of 1005kg/m 3 Is favorable for forming fluidization under the disturbance of an aeration device and is favorable for the rapid growth of biological bacteria in the filler to form a biological film. Greatly shortens the system starting time, and adds biological bacterial agent and adsorbent in the reaction unit, which is beneficial to the rapid adhesion of biological film on the composite filler 133, and the sludge load of the aerobic reaction unit 230 of the composite filler 133 can be 0.8-1.5 kg-BOD 5/(m) 3 Filler d) residence time 4-6 hours, and air-water ratio is 8:10. in this way, the growth of the biological bacteria inside the composite filler 133 is accelerated, and a biofilm is rapidly formed. The starting time of the system is quickened as a whole.
Further, in this particular embodiment, a sludge return unit 280270 and a sludge return unit are also included. The input end of the sludge reflux unit 280270 is connected with the aerobic reaction unit 230 of the composite filler 133, and the output end is connected with the anaerobic reaction unit 210, and is used for refluxing the nitrified liquid with the reflux ratio of 200% -400% into the anoxic reaction unit 220. The input end of the sludge reflux unit is connected with the standing precipitation unit 240, and the output end is connected with the anoxic reaction unit 220, and is used for refluxing the sludge with the reflux ratio of 40% -100% into the anoxic reaction unit 220. Through six processing units that associate from front to back, can guarantee to start biochemical reaction system steadily and rapidly, set up nitrifying liquid reflux unit 270 and mud reflux unit 280 and flow back to the anterior segment in a large quantity, increase the treatment effect, compound filler 133 aerobiotic reaction unit 230 adds porous flat column filler and strengthens the nitration process, is favorable to quick biochemical reaction. Compared with the traditional sewage treatment process, the starting time is shortened by 50 percent.
The domestic sewage device of this application embodiment includes: the apparatus main body 100. Fig. 2 shows a schematic diagram of a main body structure of a domestic sewage treatment device according to an embodiment of the present application, referring to fig. 2, a device main body 100 is of a hollow and sealed strip structure, and an anaerobic reaction cavity 110, an anoxic reaction cavity 120, a composite filler 133, an aerobic reaction cavity 130, a standing precipitation cavity 140, a disinfection cavity 150 and a tail gas treatment cavity 160 which are sequentially communicated are included in the device main body 100, and start-up time of the device main body 100 is shortened by means of devices and added agents arranged in the cavities, and efficiency of the cavities in domestic sewage treatment is improved.
In an embodiment, the anaerobic reaction cavity 110 is a cavity in which the apparatus main body 100 is communicated with external domestic sewage, the anaerobic reaction cavity 110 can be rapidly connected with a storage point of the domestic sewage by using the quick connector 111, and the domestic sewage is pumped into the anaerobic reaction cavity 110 by using the lift pump. The inside of anaerobic reaction cavity 110 still is equipped with filter equipment 112 and hydraulic agitation device 114 of intaking, and filter equipment 112 and the inside input intercommunication of anaerobic reaction cavity 110 of intaking carry out preliminary filtration to the biological sewage that gets into anaerobic reaction cavity 110, filter the large granule impurity in the sewage, hydraulic agitation device 114 sets up in the bottom of anaerobic reaction cavity 110, prevents that the mud in the anaerobic reaction cavity 110 from depositing, makes mud and sewage flow through to in the anoxic reaction cavity 120.
The whole of the water inlet filter device 112 is in a columnar structure, one end of the water inlet filter device is open and communicated with the input end of the anaerobic reaction cavity 110, the other end of the water inlet filter device is sealed, a plurality of through holes are formed in the side wall of the water inlet filter device 112, the aperture of each through hole is within a range of 3-4 mm, large-particle impurities are blocked, and sludge and sewage pass through the through holes to enter the anaerobic reaction cavity 110 to complete hydrolysis acidification reaction. In addition, the inlet water filter 112 can be taken out from the inside of the apparatus main body 100, large particle impurities in the inlet water filter 112 can be discharged, and the inlet water filter 112 can be communicated with the input end of the anaerobic reaction chamber 110 for reuse.
The hydraulic stirring device 114 is installed at the bottom of the anaerobic reaction cavity 110, and the sewage in the anaerobic reaction cavity 110 is stirred by using the outflow energy of the hydraulic stirring device 114, so that the sewage circulates, and sludge precipitation in the sewage is prevented.
Wherein, a first baffle plate 115 is disposed between the anaerobic reaction cavity 110 and the anoxic reaction cavity 120, the first baffle plate 115 separates the anaerobic reaction cavity 110 and the anoxic reaction cavity 120, and a first water through hole is formed at the bottom of the first baffle plate 115 to communicate the anaerobic reaction cavity 110 and the anoxic reaction cavity 120, so that the sewage flow in the anaerobic reaction cavity 110 after hydrolysis and acidification reaction passes from the bottom of the first baffle plate 115 to the anoxic reaction cavity 120.
In a specific embodiment, the inside of the anoxic reaction chamber 120 is provided with a perforated aeration device 122 and a flexible carbon fiber packing 121. The angle steel is used for horizontally paving and suspending the flexible carbon fiber filler 121 at the middle position of the anoxic reaction cavity 120, which is favorable for forming and attaching a biological film, the perforated aeration device 122 is arranged at the bottom of the anoxic reaction cavity 120 and is used for dynamically adjusting dissolved oxygen, removing nitrate nitrogen and partial COD by denitrification reaction and improving the biodegradability of the rear-end reaction system.
The flexible carbon fiber filler 121 is in a curtain structure and is suspended in the anoxic reaction cavity 120, and the laying density of the filler in the anoxic reaction cavity 120 is 100mm×100mm.
Wherein, the perforated aeration device 122 is disposed below the flexible carbon fiber filler 121, and the aeration direction of the perforated aeration device 122 faces the bottom of the anoxic reaction chamber 120, thereby providing oxygen and generating agitation for the inside of the anoxic reaction chamber 120.
Wherein, a second baffle 123 is disposed between the anoxic reaction cavity 120 and the aerobic reaction cavity 130 of the composite filler 133, the second baffle 123 separates the anoxic reaction cavity 120 and the aerobic reaction cavity 130 of the composite filler 133, and a second water through hole is formed in the middle upper position of the second baffle 123, which communicates the anoxic reaction cavity 120 and the aerobic reaction cavity 130 of the composite filler 133, so that the sewage after the nitrification reaction in the anoxic reaction cavity 120 flows to the inside of the aerobic reaction cavity 130 of the composite filler 133 through the second water through hole on the second baffle 123.
In a specific embodiment, the aerobic reaction cavity 130 of the composite packing 133 further comprises a water inlet interception device 131, a water outlet interception device 135, a microporous aeration device 132 and a nitrified liquid stripping reflux device 134. The water inlet interception device 131 and the water outlet interception device 135 prevent the composite filler 133 added in the aerobic reaction cavity 130 of the composite filler 133 from flowing into the adjacent cavity, the microporous aeration device 132 can supplement dissolved oxygen in the aerobic reaction cavity 130 of the composite filler 133 and suspend the composite filler 133, and the nitrifying liquid stripping reflux device 134 is used for refluxing nitrifying liquid with a reflux ratio of 200-400% into the anoxic reaction cavity 120.
The water inlet blocking device 131 and the water outlet blocking device 135 are hollow column structures, and through holes are formed in the circumferential side walls. One end of the water inlet interception device 131 is sealed, the other end of the water inlet interception device is opened and communicated with the second water through hole, and sewage in the anoxic reaction cavity 120 flows through the water inlet interception device 131 and passes through the through hole to enter the interior of the aerobic reaction cavity 130 of the composite filler 133. One end of the water outlet interception device 135 is sealed, and the other end of the water outlet interception device 135 is opened and communicated with the output end of the aerobic reaction cavity 130 of the composite filler 133, so that the sewage treated in the aerobic reaction cavity 130 of the composite filler 133 flows from the through hole of the water outlet interception device 135 to the inside of the water outlet interception device 135 and flows into the next treatment cavity. Thus, when the through holes formed in the water inlet interception device 131 and the water outlet interception device 135 are smaller than the volume of the composite filler 133, the composite filler 133 does not flow into the adjacent cavities. In addition, the through holes of the water inlet interception device 131 and the water outlet interception device 135 are in a long round structure, and provide a larger overflow area while intercepting the composite packing 133.
In a specific embodiment, the microporous aeration device 132 is disposed at the bottom of the aerobic reaction cavity 130 of the composite filler 133, and the composite filler 133 added into the aerobic reaction cavity 130 of the composite filler 133 is suspended in the sewage while the dissolved oxygen is supplemented into the aerobic reaction cavity 130 of the composite filler 133.
In a specific embodiment, fig. 4 is a schematic diagram showing a main structure of a nitrified liquid stripping reflux device according to an embodiment of the present application, referring to fig. 4, a nitrified liquid stripping reflux device 134 includes: first intake pipe 1343, first drainage standpipe 1342 and first drainage violently pipe 1341, first drainage standpipe 1342 vertical setting, and first drainage standpipe 1342 is top sealed, bottom open-ended structure, first intake pipe 1343 one end is linked together with first drainage standpipe 1342's lateral wall bottom, the other end is applicable to the connection fan, the one end of first drainage violently pipe 1341 is linked together with first drainage standpipe 1342's top, the other end communicates to the inside of oxygen deficiency reaction cavity 120, when the fan is first intake pipe aerifys, make the aerobic reaction cavity 130 bottom nitrify the pump of composite filler 133 to in the oxygen deficiency reaction cavity 120. In addition, the first drain pipe 1341 is disposed obliquely downward, and the inclination is 1/20.
Wherein, a third baffle 136 is disposed between the aerobic reaction cavity 130 of the composite filler 133 and the static precipitation cavity 140, the third baffle 136 separates the aerobic reaction cavity 130 of the composite filler 133 and the static precipitation cavity 140, a third water through hole is opened at the middle of the third baffle 136 near the upper position, the aerobic reaction cavity 130 of the composite filler 133 and the static precipitation cavity 140 are communicated, and the opening of the water outlet interception device 135 is communicated with the third water through hole.
In one embodiment, the stationary settling chamber 140 includes a first plate 136, a cone 143, a sludge stripper reflux 144, and a swash plate 142. The first plate 136 is used for changing the direction of water flow, the cone hopper 143 is used for collecting precipitated sludge and discharging the precipitated sludge from an emptying port formed in the bottom, the sludge gas stripping reflux device 144 is used for controlling the reflux ratio to be 40% -100% of the sludge to reflux into the anaerobic reaction cavity 110, and the inclined plate 142 is used for preventing the sludge from being carried out in the next cavity along with sewage.
Wherein, the cone hopper 143 is arranged at the bottom of the standing precipitation cavity 140, and the opening faces to the top of the standing precipitation cavity 140 for collecting sludge in sewage and discharging part of the collected sludge from an emptying port arranged at the bottom of the standing precipitation cavity 140.
Wherein, the first plate 136 is vertically arranged to separate the standing precipitation cavity 140, and the top and two ends of the first plate 136 are connected with the standing precipitation cavity 140, and the bottom is kept at a first preset distance from the standing precipitation cavity 140, so that the sewage and sludge entering the standing precipitation cavity 140 flow through the opening of the cone hopper 143 from the lower side of the first plate 136, and the first plate 136 is parallel to the third partition 136 and close to the third partition 136. When sewage flows into the standing sedimentation cavity 140 through the third water outlet, the first plate 136 changes the flow direction of the sewage, so that the sewage entering the standing sedimentation cavity 140 vertically flows downwards to the cone hopper 143 at the bottom, and the sedimentation of the sludge is facilitated.
The inclined plates 142 are PVC plates, and the inclined plates 142 are multiple in number and are arranged at the middle position of the standing sedimentation cavity 140 in an inclined, horizontal and equidistant mode. The inclination direction of each inclined plate 142 is the same, and is 60 degrees, and the interval distance between any two inclined plates 142 is 80mm. Thus, the sludge in the sewage cannot pass through the inclined plates 142 arranged at intervals, the sewage passes through the inclined plates 142 and flows to the next treatment cavity, and the sludge is precipitated into the bottom cone hopper 143.
Wherein, the sludge stripping reflux device 144 comprises: the second intake pipe, second drainage standpipe and the horizontal pipe of second drainage, the vertical setting of second drainage standpipe, and the second drainage standpipe is top sealed, bottom open-ended structure, and the one end of the horizontal pipe of second drainage is linked together with the top of second drainage standpipe, and the other end communicates to the inside of anaerobic reaction cavity 110, and second intake pipe one end is linked together with the lateral wall bottom of second drainage standpipe, and the other end is applicable to and connects the fan.
Wherein, a fourth baffle 145 is disposed between the settling chamber 140 and the sterilizing chamber 150, the fourth baffle 145 separates the settling chamber 140 and the sterilizing chamber 150, a fourth water outlet is disposed in the middle upper position of the fourth baffle 145, and the height of the fourth water outlet is higher than the paving height of the sloping plate 142.
In a specific embodiment, the baffle plate 151 is vertically disposed in the disinfection cavity 150, the top and two sides of the baffle plate 151 are connected with the disinfection cavity 150, and a second preset distance is reserved between the bottom and the bottom of the disinfection cavity 150, so that the circulation path of the disinfection cavity 150 is of a U-shaped structure, the reaction path is lengthened, and the full reaction is facilitated.
Wherein, a fifth partition board 152 is disposed between the disinfection cavity 150 and the tail gas treatment cavity 160, the fifth partition board 152 separates the disinfection cavity 150 and the tail gas treatment cavity 160, a first vent hole is opened in the upper position of the middle of the fifth partition board 152, and the first vent hole is communicated with the disinfection cavity 150 and the tail gas treatment cavity 160, so that the tail gas in the disinfection cavity 150 enters the interior of the tail gas treatment cavity 160 through the first vent hole.
In one embodiment, the exhaust treatment chamber 160 has an interior: tail gas collection line 161, ultraviolet catalytic oxidation treatment device 164, pressure monitoring device 162, induced draft fan 165, chimney 163 and fan. The exhaust gas collecting pipe 161, the ultraviolet catalytic oxidation treatment device 164, the induced draft fan 165 and the chimney 163 are sequentially connected in series, the other end of the exhaust gas collecting pipe 161 is communicated with the first vent hole, the induced draft fan 165 is started, the exhaust gas in the disinfection cavity 150 is introduced, the exhaust gas is purified through the ultraviolet catalytic oxidation treatment device 164, and the purified exhaust gas is discharged out of the equipment main body 100 through the communicated chimney 163. The blower is disposed in the tail gas treatment chamber 160 and is connected to the sludge stripping reflux device 144 and the nitrified liquid stripping reflux device 134, respectively, to provide gas.
In a specific embodiment, fig. 3 is a schematic side view illustrating a main body structure of an apparatus main body according to an embodiment of the present application, and referring to fig. 3, the whole apparatus main body 100 is a sealing structure, and gas diffusion in sewage is placed. Therefore, a sealed manhole is arranged on the opposite side of the body length of the equipment main body, and a transparent acrylic cover plate is arranged at the manhole. The cross section of the apparatus body 100 is in an inverted "U" shaped structure.
The domestic sewage treatment method comprises the following steps: 1. the domestic sewage at the isolation point is connected with the quick connector 111 of the equipment main body 100 through the submersible pump, is conveyed to the inside of the anaerobic reaction cavity 110, enters the filtering device, filters out granular impurities in water, and completes hydrolysis acidification reaction in the anaerobic reaction unit 210, so that macromolecular organic matters are converted into micromolecular organic matters, bacterial screening is carried out, and the retention time is not less than 2 hours. 2. The pretreated sewage after hydrolysis and acidification reaction enters an anoxic reaction cavity 120, the dissolved oxygen in the reaction cavity is controlled to be 0.2-0.6 mg/L, a perforated aeration pipe is arranged at the bottom to dynamically adjust the dissolved oxygen, and nitrate nitrogen and partial COD are removed by denitrification reaction, so that the biodegradability of subsequent reaction can be improved. 3. The dissolved oxygen of the aerobic reaction cavity 130 of the composite filler 133 is controlled to be 3-4 mg/L, the composite filler 133 is filled in the reaction cavity, fluidization is formed by utilizing the bottom microporous aeration device 132, the interior of the composite filler 133 adapts to the growth and propagation of microorganisms, and nitration reaction is carried out, so that organic matters in sewage are further decomposed into inorganic matters, the purpose of removing pollutants is achieved, and the sewage is in the cavity. The biological bacteria and the adsorbent are added, so that the rapid adhesion of the biological film on the composite filler 133 is facilitated, the sludge load in the aerobic reaction cavity 130 of the composite filler 133 can be 0.8-1.5 kg-BOD 5/(m 3 filler. D), the residence time is 4-6 hours, the gas-water ratio is 8-10, and in order to achieve more ideal treatment effect, the aerobic reaction cavity 130 of the composite filler 133 is provided with a nitrifying liquid gas stripping reflux device 134 for refluxing nitrifying liquid with a reflux ratio of 200% -400% to the anoxic reaction cavity 120. 4. The sludge is settled and deposited in a cone hopper 143 at the bottom, the separated supernatant flows to the next processing cavity, and flows back to the front anaerobic reaction cavity 110 by a sludge gas stripping reflux device 144, the reflux ratio is controlled to be 40-100%, an emptying port is arranged, the aged sludge is regularly discharged, and the sludge discharge amount is 10-20% of the total volume of the sludge tank each time. 5. The supernatant flows through to the inside of disinfection cavity 150, adopts sodium hypochlorite solution disinfection, uses the measuring pump to get into disinfection cavity 150 accurately, disinfects he and sets up residual chlorine detection device, and the setting value is 6.5mg/L to with the linkage of measuring pump, the measuring pump can guarantee accurate control dosing. 6. The induced draft fan 165 is driven by a frequency converter, is linked with the pressure monitoring device 162, ensures the micro negative pressure operation of the system, keeps the pressure between 10 Pa and 20Pa, and can be automatically adjusted.
The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A domestic sewage treatment system, comprising:
the device comprises an anaerobic reaction unit, an anoxic reaction unit, a composite filler aerobic reaction unit, a standing precipitation unit, a disinfection unit and a tail gas treatment unit;
the anaerobic reaction unit, the anoxic reaction unit, the composite filler aerobic reaction unit, the standing precipitation unit, the disinfection unit and the tail gas treatment unit are sequentially connected in series;
the bottom of the composite filler aerobic reaction unit is provided with a microporous aeration device, filler, biological bacteria and adsorbent are added into the microporous aeration device, and the filler is of a porous and flat column-shaped structure.
2. The domestic sewage treatment system of claim 1, wherein the sewage treatment system further comprises: a nitrifying liquid reflux unit and a sludge reflux unit;
the input end of the nitrifying liquid reflux unit is connected with the composite filler aerobic reaction unit, and the output end of the nitrifying liquid reflux unit is connected with the anaerobic reaction unit;
the input end of the sludge reflux unit is connected with the standing precipitation unit, and the output end of the sludge reflux unit is connected with the anoxic reaction unit.
3. An apparatus comprising the domestic sewage treatment system of any one of claims 1-2 and a device body;
the equipment main body is of a hollow sealing structure, and an anaerobic reaction cavity, an anoxic reaction cavity, a composite filler aerobic reaction cavity, a standing precipitation cavity, a disinfection cavity and a tail gas treatment cavity are sequentially communicated with the inside of the equipment main body; and is also provided with
The composite filler aerobic reaction chamber is internally provided with a microporous aeration device, the microporous aeration device is paved at the bottom of the composite filler aerobic reaction chamber, and the air outlet direction of the air outlet hole of the microporous aeration device faces to the top of the composite filler aerobic reaction chamber, so that the filler is disturbed to be fluidized.
4. A device according to claim 3, wherein a water inlet filtering device and a hydraulic stirring device are arranged in the anaerobic reaction cavity;
the water inlet filtering device is arranged at the top end of the inside of the anaerobic reaction cavity and is connected with the outside through a quick connector; the hydraulic stirring device is arranged in the anaerobic reaction and is positioned below the water inlet filtering device, and the stirring direction of the hydraulic stirring device is set around the length direction of the water inlet filtering device.
5. The device according to claim 4, wherein a perforated aeration device and a flexible carbon fiber filler are arranged inside the anoxic reaction cavity;
the whole flexible carbon fiber filler is of a curtain structure and is paved at the middle position inside the anoxic reaction cavity along the horizontal direction of the equipment main body; the perforation aeration device is arranged at the bottom end of the inside of the anoxic reaction cavity, is positioned below the flexible carbon fiber filler, and the aeration direction of the perforation aeration device faces the bottom of the anoxic reaction cavity.
6. The device according to claim 5, wherein the composite filler aerobic reaction cavity is internally provided with a nitrifying liquid gas stripping reflux device, a water inlet interception device and a water outlet interception device;
the water inlet interception device is of a hollow structure, is communicated with the input end of the composite filler aerobic reaction cavity, and is provided with a through hole; the water outlet interception device is of a hollow structure, is communicated with the output end of the composite filler aerobic reaction cavity, and is provided with a through hole; the nitrifying liquid stripping reflux device comprises: the first air inlet pipe, the first water discharge vertical pipe and the first water discharge horizontal pipe; the first drainage standpipe is vertical, just first drainage standpipe is top sealed, bottom open-ended structure, the one end of first drainage violently manage with the top of first drainage standpipe is linked together, and the other end communicates to the inside of oxygen deficiency reaction cavity, first intake pipe one end with the lateral wall bottom of first drainage standpipe is linked together, and the other end is applicable to and connects the fan.
7. The device according to claim 6, wherein the first plate body, the cone hopper, the sludge gas stripping reflux device and the inclined plate are arranged in the standing sedimentation cavity;
the cone hopper is arranged at the bottom end of the interior of the standing precipitation cavity, the opening faces the upper side of the standing precipitation cavity, the first plate body is vertically arranged and separates the standing precipitation cavity, the top and two sides of the first plate body are in sealing connection with the standing precipitation cavity, a first preset distance is reserved between the bottom of the first plate body and the cone hopper, a plurality of inclined plates are arranged, and the inclined plates are obliquely paved above the cone hopper and are connected with the inner side wall of the standing precipitation cavity; the sludge stripping reflux device comprises: the second air inlet pipe, the second water discharge vertical pipe and the second water discharge horizontal pipe; the second drainage standpipe is vertically arranged, the second drainage standpipe is of a structure with a sealed top and an open bottom, one end of the second drainage transverse pipe is communicated with the top of the second drainage standpipe, the other end of the second drainage transverse pipe is communicated to the inside of the anaerobic reaction cavity, one end of the second air inlet pipe is communicated with the bottom of the side wall of the second drainage standpipe, and the other end of the second air inlet pipe is suitable for being connected with a fan;
and an evacuation port is formed in the bottom of the standing precipitation cavity.
8. The device according to claim 7, characterized in that the disinfection chamber is internally provided with: baffle plate, metering pump and residual chlorine detection device;
the baffle plate is vertically arranged in the disinfection cavity to separate the input end and the output end of the disinfection cavity, the top and the two sides of the baffle plate are connected with the interior of the disinfection cavity, a second preset distance is reserved between the bottom of the baffle plate and the bottom of the disinfection cavity, and the metering pump and the residual chlorine detection device are arranged in the disinfection cavity;
the top end of the side wall of the disinfection cavity is provided with a supernatant outlet.
9. The device according to claim 8, wherein a tail gas collecting pipeline, an ultraviolet light catalytic oxidation treatment device, a pressure monitoring device, an induced draft fan, a tail gas collecting pipeline and a chimney are arranged in the tail gas treatment cavity;
a fifth baffle plate is arranged between the disinfection cavity and the tail gas treatment cavity, and a first vent hole is formed in the middle part of the fifth baffle plate at an upper position;
the ultraviolet light catalytic oxidation processing apparatus and the pressure monitoring device are arranged in the tail gas collecting pipeline, one end of the tail gas collecting pipeline is communicated with the first vent hole, the other end of the tail gas collecting pipeline is sequentially communicated with the ultraviolet light catalytic oxidation processing apparatus and the induced draft fan, the pressure monitoring device is arranged on the tail gas collecting pipeline, the chimney is communicated with the induced draft fan, and the other end of the chimney penetrates to the outside of the equipment main body.
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| CN202320135426.2U CN220376500U (en) | 2023-01-13 | 2023-01-13 | Domestic sewage treatment system and device thereof |
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| CN202320135426.2U CN220376500U (en) | 2023-01-13 | 2023-01-13 | Domestic sewage treatment system and device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118343917A (en) * | 2023-01-13 | 2024-07-16 | 北京潮白环保设备有限公司 | Domestic sewage treatment system and device and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118343917A (en) * | 2023-01-13 | 2024-07-16 | 北京潮白环保设备有限公司 | Domestic sewage treatment system and device and method thereof |
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