CN213596107U - Ecological energy-saving rural sewage treatment equipment and system - Google Patents
Ecological energy-saving rural sewage treatment equipment and system Download PDFInfo
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- CN213596107U CN213596107U CN202022100937.XU CN202022100937U CN213596107U CN 213596107 U CN213596107 U CN 213596107U CN 202022100937 U CN202022100937 U CN 202022100937U CN 213596107 U CN213596107 U CN 213596107U
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Abstract
The utility model belongs to the technical field of water treatment, especially, relate to an ecological energy-saving rural sewage treatment device and processing system. The treatment equipment comprises a treatment tank, a water inlet pipe and a water outlet pipe, wherein an anaerobic pretreatment area, an anoxic treatment area, an aerobic treatment area and a precipitation water outlet area are arranged in the treatment tank, the water inlet pipe and the water outlet pipe are respectively connected with the anaerobic pretreatment area and the precipitation water outlet area, the anaerobic pretreatment area, the anoxic treatment area, the aerobic treatment area and the precipitation water outlet area are communicated in sequence, a backflow structure is further arranged between the anaerobic treatment area and the aerobic treatment area, and the backflow structure is used for enabling part of aerobic treatment water in the aerobic treatment area to flow back to the anoxic treatment area. Domestic sewage is discharged into the treatment tank through the water inlet pipe, after anaerobic treatment, anoxic treatment, aerobic treatment and precipitation treatment, the quality of effluent water reaches the first-level B standard of the discharge Standard of pollutants for municipal wastewater treatment plants, the effluent water can be directly discharged, the treatment requirement of rural domestic sewage is met, and the device has wide application prospect in rural areas.
Description
Technical Field
The utility model belongs to the technical field of water treatment, more specifically say, relate to an ecological energy-saving rural sewage treatment device and processing system.
Background
In recent years, with the proposal of the construction concept of 'beautiful villages' in China and the coming of 'action plan for preventing and treating water pollution', the attention degree of the treatment work of the rural domestic sewage is continuously increased. Generally, because rural domestic sewage has the characteristics of small scale, large quantity, high dispersion and the like, the traditional station-type centralized collection and centralized treatment mode is limited by various factors such as high cost, large land acquisition area, large seedling compensation amount, difficult operation and maintenance and the like, and is difficult to effectively implement in rural domestic sewage treatment.
Although the traditional three-format septic tank plays an important role in rural water environment improvement and sanitary environment improvement, the traditional septic tank can only temporarily store domestic sewage and carry out simple interception and sedimentation treatment, part of organic matters in the sewage can be decomposed in an anaerobic manner in the storage process, the effluent quality cannot meet the national black and odorous water body assessment target and the actual requirement of rural resource utilization, the effluent can also become a pollution source and pollute the natural water body at the periphery of the tank body to cause black and odorous water body at the periphery, and when the traditional septic tank is used alone as a treatment measure of rural domestic sewage, the environmental protection requirement of rural construction under the concept of beautiful rural construction cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide an ecological energy-saving rural sewage treatment device and processing system to there is domestic sewage treatment effect poor, the quality of water of going out to traditional septic tank among the solution prior art, can't regard as rural domestic sewage treatment measure used alone technical problem.
In order to achieve the above object, the utility model adopts the following technical scheme: an ecological energy-saving rural sewage treatment device comprises a treatment tank, and a water inlet pipe and a water outlet pipe which are connected with the treatment tank, wherein an anaerobic pretreatment area, an anoxic treatment area, an aerobic treatment area and a precipitation water outlet area are arranged in the treatment tank;
the water inlet pipe is communicated with the anaerobic pretreatment area and is used for discharging external domestic sewage to be treated into the anaerobic pretreatment area for anaerobic pretreatment, the anoxic treatment area is communicated with the anaerobic pretreatment area and is used for carrying out anoxic treatment on pretreated effluent discharged from the anaerobic pretreatment area, the aerobic treatment area is communicated with the anoxic treatment area and is used for carrying out aerobic treatment on the anoxic treatment effluent discharged from the anoxic treatment area, the sedimentation water outlet area is communicated with the aerobic treatment area and is used for storing and precipitating aerobic treatment effluent discharged from the aerobic treatment area, and the water outlet pipe is connected with the sedimentation water outlet area and is used for discharging water in the sedimentation water outlet area;
wherein a reflux structure is arranged between the anaerobic pretreatment area and the aerobic treatment area and used for refluxing part of aerobic treatment water in the aerobic treatment area to the anoxic treatment area.
In some embodiments, a first partition wall is arranged in the treatment tank, the anoxic treatment zone and the aerobic treatment zone are respectively positioned at two opposite side parts of the first partition wall, a first overflowing hole is formed in the first partition wall, and anoxic treatment effluent is discharged into the aerobic treatment zone through the first overflowing hole;
a first partition wall is arranged in the treatment tank, the anoxic treatment area and the aerobic treatment area are respectively positioned at two opposite side parts of the first partition wall, a first overflowing hole is formed in the first partition wall, and anoxic treatment effluent is discharged into the aerobic treatment area through the first overflowing hole;
an aerobic packing layer and an aeration device are arranged in the aerobic treatment area, the aeration device is arranged on the bottom wall of the treatment tank, and the aerobic packing layer extends upwards from the bottom wall of the treatment tank.
In some embodiments, the backflow structure is a flow guide plate, the flow guide plate comprises a support part connected with the bottom wall of the treatment tank and a flow guide part connected with the support part, the first partition wall is provided with a hanging end arranged at a distance from the bottom wall of the treatment tank, the support part is positioned below the hanging end and forms a water return area at a distance from the first partition wall, the flow guide plate is positioned in the aerobic treatment area and is arranged in a slope direction towards the water return area, the hanging end is arranged at a distance from the support part or the flow guide part and forms a backflow channel, and the flow guide part partially shields the aerobic filler layer and the aeration device.
In some embodiments, the treatment tank is further provided with a second partition wall, the aerobic treatment zone and the sedimentation water outlet zone are respectively located at two opposite sides of the second partition wall, a second through-flow hole is formed at the position where the second partition wall is connected with the bottom wall of the treatment tank, and the aerobic treatment water is discharged into the sedimentation water outlet zone through the second through-flow hole.
In some embodiments, a third partition wall is further arranged in the treatment tank, the anaerobic pretreatment area and the anoxic treatment area are respectively located on two opposite side portions of the third partition wall, a plurality of rectifier boards are arranged on the side wall, located in the anaerobic pretreatment area, of the third partition wall at intervals, an overflowing elbow is further installed on the third partition wall, a water inlet of the overflowing elbow extends into the anaerobic pretreatment area and is located between two adjacent rectifier boards, an anoxic packing layer is further arranged in the middle of the anoxic treatment area, a water outlet of the overflowing elbow extends into the anoxic treatment area at a position below the anoxic packing layer, and the water outlet of the overflowing elbow is arranged towards the anoxic packing layer.
In some embodiments, the plurality of flow-straightening plates are arranged in parallel at intervals, the end parts far away from the third partition wall are connected through a connecting plate, and the water inlet of the overflowing elbow is positioned between the connecting plate and the third partition wall.
In some embodiments, a lifting basket for filtering suspended solids in the domestic sewage is further arranged in the anaerobic pretreatment area, the water outlet of the water inlet pipe is located above the rectifying plate, and the lifting basket is located between the water outlet of the water inlet pipe and the rectifying plate.
In some embodiments, the treatment tank is further provided with a distribution pipe for distributing water in the anaerobic pretreatment region to the aerobic treatment region, wherein the water inlet of the distribution pipe is positioned in the anaerobic pretreatment region, and the water outlet of the distribution pipe is positioned in the aerobic treatment region.
In some embodiments, the ratio of the volumes of the anaerobic pretreatment zone, the anoxic treatment zone, the aerobic treatment zone, and the precipitation effluent zone is 1.5:1:2: 0.5.
The utility model provides an above-mentioned one or more technical scheme in the rural sewage treatment device of ecological energy-saving type have one of following technological effect at least: when the ecological energy-saving rural sewage treatment equipment is used, domestic sewage to be treated enters the anaerobic pretreatment area through the water inlet pipe for treatment, long-chain organic matters which are difficult to degrade in the domestic sewage are hydrolyzed through anaerobic biological reaction, so that the organic matters in the water body are easier to degrade, and meanwhile, the anaerobic environment can kill some bacteria and worm eggs; then, the pretreated effluent after anaerobic pretreatment flows into an anoxic treatment area for anoxic treatment, the anoxic treatment area mainly performs denitrification through anoxic reaction to convert nitrate nitrogen in the water body into nitrogen gas for removal, and the total nitrogen content in the water body is reduced; the effluent of the anoxic treatment flowing out of the anoxic treatment zone is further discharged into the aerobic treatment zone for aerobic treatment, the water body is subjected to aerobic reaction in the aerobic treatment zone, most organic matters in the water body are removed through the aerobic reaction, and simultaneously, phosphorus in the water body can be adsorbed and removed, so that the content of phosphorus in the water body is reduced, in addition, the aerobic treatment zone can also be subjected to aerobic nitration reaction, so that ammonia nitrogen in the water body is converted into nitrate nitrogen, and thus, part of water in the aerobic treatment zone can flow back to the anoxic treatment zone through a reflux structure arranged between the aerobic treatment zone and the anoxic treatment zone, so that the nitrate nitrogen is finally converted into nitrogen to overflow the water body; and finally, allowing the water body after aerobic treatment to flow into a precipitation water outlet area for mud-water separation, and discharging separated supernatant through a water outlet pipe. Therefore, after the domestic sewage is treated by the ecological energy-saving rural sewage treatment equipment, the quality of the effluent can reach the first-level B standard of the pollutant discharge standard of urban sewage treatment plants, the effluent cannot pollute the surrounding environment, the effluent can be directly discharged as farmland irrigation water or river channel supplement water source, and the treated residues can also be used as irrigation fertilizer of farmlands to realize resource recycling; and the tank type building form of the ecological energy-saving rural sewage treatment equipment is convenient for construction, can be dispersedly arranged according to needs, meets the treatment requirements of rural domestic sewage, and has wide application prospect in rural areas and other areas inconvenient for building station type sewage treatment plants.
The utility model discloses another technical scheme is: provides an ecological energy-saving rural sewage treatment system, which comprises the ecological energy-saving rural sewage treatment equipment.
The utility model discloses a processing system, through using foretell ecological energy-saving rural sewage treatment device, it can realize the high-efficient degradation to pollutant in the domestic sewage, goes out water quality of water and can reach the one-level B standard of "town sewage treatment plant pollutant emission standard", and it can regard as farmland irrigation water or river course to supply the water source directly to discharge to go out water, is applicable to the water treatment project that the scale is little, in large quantity and high dispersion.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
FIG. 1 is a top plan view of an ecological energy-saving rural sewage treatment facility provided by an embodiment of the present invention;
FIG. 2 is a middle level plan view of the ecological energy-saving rural sewage treatment facility provided by an embodiment of the present invention;
FIG. 3 is a longitudinal section of the ecological energy-saving rural sewage treatment facility provided by an embodiment of the present invention;
fig. 4 is a bottom plan view of the ecological energy-saving rural sewage treatment equipment provided by an embodiment of the utility model.
Wherein, in the figures, the respective reference numerals:
10-a treatment tank; 100-ground; 101-a first clearing hole; 102-second clearing hole; 103-a first manhole; 104-a second manhole; 105-mud hole; 11-anaerobic pretreatment zone; 111-a rectifying plate; 1111-flow rectification hole; 112-an overflow elbow; 113-a connecting plate; 114-a basket; 12-an anoxic treatment zone; 121-a water return area; 122-anoxic filler layer; 13-an aerobic treatment zone; 131-an aerobic filler layer; 132-an aeration device; 133-dissolved oxygen detector; 14-a precipitation effluent zone; 15-a reflow structure; 151-a support portion; 152-a flow guide part; 16-a first dividing wall; 161-a first overflow aperture; 163-a return channel; 17-a second separation wall; 171-a second overflow aperture; 18-a third partition wall; 19-a distribution pipe; 20-water inlet pipe; 30-water outlet pipe; 31-tube disinfector; 40-a solar power generation device.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, it is right to combine fig. 1 ~ 4 and embodiment below the utility model discloses further detailed description proceeds. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Reference throughout the specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the invention. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The following explains the proper nouns and acronyms appearing herein:
BOD5: biochemical oxygen demand, an important indicator of the degree of contamination of water by organic matter, is indirectly expressed in terms of the amount of dissolved oxygen consumed by the metabolism of microorganisms. It represents the amount of free oxygen consumed by aerobic microorganisms to oxidatively decompose organic matter in a unit volume of water in 5 days, expressed in milligrams per liter (O) of oxygen2mg/L). The method is mainly used for monitoring the pollution condition of organic matters in the water body.
COD: the chemical oxygen demand is the amount of reducing substances needing to be oxidized in a water sample measured by a chemical method. The oxygen equivalent of a substance (typically an organic substance) that can be oxidized by a strong oxidizing agent in sewage, effluent from a sewage treatment plant, and contaminated water.
And SS: concentration of solid suspension.
TN: total nitrogen, the total amount of various forms of inorganic and organic nitrogen in the water.
TP: total phosphorus, total amount of phosphorus in various forms in water.
As shown in FIGS. 1-4, an embodiment of the present invention provides an ecological energy-saving rural sewage treatment device, which is suitable for but not limited to treating rural domestic sewage, and is also suitable for other sewage treatment projects similar to the characteristics of rural domestic sewage.
Specifically, as shown in fig. 1-3, the ecological energy-saving rural sewage treatment equipment comprises a treatment tank 10, wherein an anaerobic pretreatment region 11, an anoxic treatment region 12, an aerobic treatment region 13 and a precipitation water outlet region 14 are arranged in the treatment tank 10; the anaerobic pretreatment area 11 is provided with a large number of anaerobic microorganisms which can carry out anaerobic reaction to decompose long-chain organic matters in the water body, the anoxic treatment area 12 is distributed with a large number of anoxic microorganisms such as denitrifying bacteria, nitrate nitrogen in the water body can be converted into nitrogen through anoxic reaction, so that the content of nitrogen in the water body is reduced, the total nitrogen concentration of the water body is reduced, the aerobic treatment area 13 is distributed with a large number of aerobic microorganisms such as ammonia oxidizing bacteria, nitrifying bacteria, phosphorus accumulating bacteria and the like, wherein the ammonia oxidizing bacteria and the nitrifying bacteria can convert ammonia nitrogen in the water body into nitrate nitrogen, and the phosphorus accumulating bacteria can adsorb and remove phosphorus in the water, so that the total phosphorus concentration of the water body is reduced.
Further, as shown in fig. 1 to 3, the treatment tank 10 is further connected with a water inlet pipe 20 and a water outlet pipe 30, wherein the water inlet pipe 20 is communicated with the anaerobic pretreatment region 11, specifically, a water inlet of the water inlet pipe 20 is connected with an external domestic sewage discharge port, for example, a sewage pipe for discharging domestic sewage in rural residences, etc., a water outlet of the water inlet pipe 20 is connected with the anaerobic pretreatment region 11, and external domestic sewage to be treated is discharged into the anaerobic pretreatment region 11 through the water inlet pipe 20 for anaerobic pretreatment; further, an anoxic treatment zone 12 is communicated with the anaerobic pretreatment zone 11 and is used for performing anoxic treatment on pretreated effluent discharged from the anaerobic pretreatment zone 11, an aerobic treatment zone 13 is communicated with the anoxic treatment zone 12 and is used for performing aerobic treatment on the anoxic treatment effluent discharged from the anoxic treatment zone 12, a precipitation effluent zone 14 is communicated with the aerobic treatment zone 13 and is used for storing and precipitating the aerobic treatment effluent discharged from the aerobic treatment zone 13, and a water outlet pipe 30 is connected with the precipitation effluent zone 14 and is used for discharging water in the precipitation effluent zone 14. Furthermore, a backflow structure 15 is arranged between the anaerobic pretreatment zone 11 and the aerobic treatment zone 13, and the backflow structure 15 is used for enabling part of the aerobic treatment water in the aerobic treatment zone 13 to flow back to the anoxic treatment zone 12.
The utility model discloses ecological energy-saving rural sewage treatment device, during the use, pending domestic sewage passes through inlet tube 20 and advanced goes into anaerobic pretreatment district 11 and handles, and the long chain organic matter of difficult degradation in with domestic sewage is hydrolyzed through anaerobic biological reaction, makes the organic matter in the water change in the degradation, and anaerobic environment can also kill partial bacterium simultaneously and follow the worm's ovum, and domestic sewage is behind anaerobic pretreatment, and BOD goes out aquatic in its preliminary treatment5The concentration of the component (b) is about 60-150 mg/L, COD and about 100-200 mg/L, SS and about 50-100 mg/L, wherein BOD5The concentration of the wastewater is reduced to below 60 percent, COD is reduced to below 40 percent, and SS is reduced to below 80 percent. Then, the pretreated effluent after anaerobic pretreatment flows into an anoxic treatment area 12 for anoxic treatment, the anoxic treatment area 12 mainly performs denitrification through anoxic reaction to convert nitrate nitrogen in the water into nitrogen to be removed, and the concentration of TN in the water is reduced; the effluent 12 of the anoxic treatment flowing out from the anoxic treatment zone 12 is further discharged into an aerobic treatment zone 13 for aerobic treatment, the water body is subjected to aerobic reaction in the aerobic treatment zone 13, most organic matters in the water body are removed through the aerobic reaction, phosphorus in the water body can be adsorbed and removed at the same time, the concentration of TP in the water body is reduced, in addition, an aerobic nitration reaction can be carried out in the aerobic treatment zone 13, ammonia nitrogen in the water body is converted into nitrate nitrogen, and thus, part of water in the aerobic treatment zone 13 flows back to the anoxic treatment zone 12 through a reflux structure 15 arranged between the aerobic treatment zone 13 and the anoxic treatment zone 12, so that the nitrate nitrogen is finally converted into nitrogen to overflow the water body; finally, the water body after aerobic treatment flows into the sedimentThe settling water zone 14 is subjected to mud-water separation, and the separated supernatant is discharged through a water outlet pipe 30. Therefore, after the domestic sewage is treated by the ecological energy-saving rural sewage treatment equipment, the quality of the effluent can reach the first-class B standard of the pollutant discharge standard of urban sewage treatment plants, the effluent cannot pollute the surrounding environment, the effluent can be directly discharged as farmland irrigation water or river channel supplement water source, and the treated residues can also be used as irrigation fertilizer of farmlands to realize resource recycling; and the tank type building form of the ecological energy-saving rural sewage treatment equipment is convenient for construction, can be dispersedly arranged according to needs, meets the treatment requirements of rural domestic sewage, and has wide application prospect in rural areas and other areas inconvenient for building station type sewage treatment plants.
In another embodiment of the present invention, as shown in fig. 1 to 3, a first partition wall 16 is disposed in the treatment tank 10, the anoxic treatment region 12 and the aerobic treatment region 13 are respectively located at two opposite sides of the first partition wall 16, a first through hole 161 is disposed on the first partition wall 16, the anoxic treatment effluent is discharged into the aerobic treatment region 13 through the first through hole 161, specifically, the first through hole 161 is disposed at an upper portion of the first partition wall 16, the anoxic treatment effluent flowing out from the anoxic treatment region 12 flows into the aerobic treatment region 13 in a drop manner, and the drop process can enrich oxygen in the water, so as to increase the content of dissolved oxygen in the water entering the aerobic treatment region 13.
Further, as shown in fig. 1 to 3, an aerobic filler layer 131 and an aeration device 132 are disposed in the aerobic treatment zone 13, the aeration device 132 is mounted on the bottom wall of the treatment tank 10, the aerobic filler layer 131 extends upward from the bottom wall of the treatment tank 10, and the flow guide portion 152 partially shields the aerobic filler layer 131 and the aeration device 132. Specifically, a plurality of elastic fillers are arranged in the aerobic filler layer 131, a biological film is formed on the elastic fillers, a large number of aerobic microorganisms are gathered in the biological film, and the aeration device is arranged below the aerobic filler layer 131 to provide oxygen for the aerobic microorganisms.
Furthermore, in the present embodiment, the height of the aerobic filler layer 131 extending upwards from the bottom wall of the treatment tank 10 is 1/3-1/2 of the total height of the treatment tank 10, so as to ensure the biological concentration of aerobic microorganisms in the aerobic treatment zone 13 and provide necessary conditions for aerobic reaction of various pollutants in the water body.
Preferably, in this embodiment, the elastic filler is preferably an inelastic thread, the bottom wall of the tank body is connected with a plurality of central ropes, and the elastic thread is connected and hung on the central ropes and floats in the aerobic treatment zone 13 under the buoyancy of the water body. Wherein, the elastic thread line is corrugated and has burrs, has larger specific surface area, is beneficial to the attachment of microorganisms, shortens the biofilm formation time of a biofilm, increases the biofilm formation amount, thus improving the biological concentration in the aerobic treatment zone 13 and the aerobic treatment efficiency. And the elastic filler is arranged in a radial shape, has good flexibility and can swing under the water-air impact condition, so that the good metabolism of the biomembrane is promoted, the biomembrane is prevented from being blocked, the microorganisms in the biomembrane have good reactivity, the water, the air and the microorganisms are fully mixed, infiltrated and contacted, and the organic matters dissociated in the water body are fully degraded.
Preferably, in this embodiment, the parameters related to the elastic thread and the central cord are as follows:
| name of component | Material of | Specific gravity of | Strength of | Tensile strength | Continuous heat resistance |
| Elastic strand silk | Polypropylene | 0.93 | ≧120N | ≧30MPa | 800-100 |
| Center rope | Drawing grade polyethylene | 0.95 | ≧85daN | ≧15MPa | 800-100 |
In another embodiment of the present invention, as shown in fig. 1 to 3, the above-mentioned backflow structure 15 is a flow guide plate, the flow guide plate includes a supporting portion 151 connected to the bottom wall of the treatment tank 10 and a flow guide portion 152 connected to the supporting portion 151, the first partition wall 16 has a free end spaced from the bottom wall of the treatment tank 10, the supporting portion 151 is located below the free end and spaced from the first partition wall 16 to form a water return area 121, the flow guide plate is located in the aerobic treatment area 13 and is set to the water return area 121, the free end is spaced from the supporting portion 151 or the flow guide portion 152 to form a backflow channel 163, and the flow guide portion 152 partially shields the aerobic packing layer 131 and the aeration device 132. Thus, water in the aerobic treatment zone 13 can flow back to the water return zone 121 through the return channel 163 and be mixed with the water in the anoxic treatment zone 12, so as to perform denitrification; and, the rivers are at the in-process that flows into return water district 121, because aeration equipment 132 upwards aerates from the jar body diapire, the water conservancy diversion portion 152 of guide plate can play the effect of backstop air current, like this, water in water conservancy diversion portion 152 backstop air current direct washout return water district 121, thereby avoid the existing water in the water-deficient treatment district 12 of backward flow disturbance, influence the treatment effeciency of oxygen deficiency reaction, and when the water flows into return water district 121 through backflow channel 163, mud in the water can deposit on water conservancy diversion portion 152, water conservancy diversion portion 152 slopes to return water district 121 and sets up, mud that deposits on water conservancy diversion portion 152 can flow into the bottom of return water district 121 along water conservancy diversion portion 152, thereby promote the mud in the water in return water district 121 to precipitate, promote the mud-water separation of the water in the water-deficient. In this embodiment, the bottom wall of the treatment tank 10 near the supporting portion 151 is further provided with a sludge discharge hole 105, as shown in fig. 4, the sludge discharge hole 105 is communicated with the sedimentation outlet zone 14 through a sludge discharge pipe (not shown), and the sludge entering the water return zone 121 is discharged into the sedimentation outlet zone 14 through the sludge discharge hole 105 for uniform treatment.
So, through setting up foretell guide plate, can be with in the good oxygen treatment zone 13 rivers part backward flow to the oxygen deficiency treatment zone 12 in to get rid of the nitrogen in the water through the complete reaction process of nitrifying-denitrification, and need not to set up the backwash pump between oxygen deficiency treatment zone 12 and the good oxygen treatment zone 13 and can realize the partial backward flow of sewage, the interior electronic component of treatment tank 10 reduces, and the energy consumption is lower, and operation management and maintenance are more convenient.
In another embodiment of the present invention, as shown in fig. 1 to 3, a second partition wall 17 is further disposed in the treatment tank 10, the aerobic treatment zone 13 and the sedimentation outlet zone 14 are respectively located at two opposite sides of the second partition wall 17, a second flow-through hole 171 is formed at a position where the second partition wall 17 is connected to the bottom wall of the treatment tank 10, and the aerobic treatment water is discharged into the sedimentation outlet zone 14 through the second flow-through hole 171. Specifically, during aeration of the aeration device 132, the sludge in the water body is flushed upwards through the air lift effect, so that the sludge is discharged to the sedimentation water outlet area 14 along with the water flow, the second overflowing hole 171 is arranged at the bottom position of the treatment tank 10, when the water flow is discharged from the second overflowing hole 171, the amount of the sludge discharged along with the water body is increased as much as possible, the sludge discharge effect is improved, the sludge deposition in the aerobic treatment area 13 is avoided, the normal operation of the aerobic treatment is influenced, the sludge is collected in a centralized manner to be uniformly discharged to the sedimentation water outlet area 14, and the sludge treatment and the disposal are more convenient.
In another embodiment of the utility model, as shown in fig. 1-3, still be provided with third division wall 18 in the treatment tank 10, anaerobic pretreatment area 11 and oxygen deficiency treatment area 12 are located the relative both sides portion of third division wall 18 respectively, third division wall 18 is located the interval on the lateral wall in anaerobic pretreatment area 11 and sets up polylith cowling panel 111, still install on the third division wall 18 and overflow return bend 112, the water inlet that overflows return bend 112 stretches into in anaerobic pretreatment area 11 and is located between two adjacent cowling panels 111, the middle part position of oxygen deficiency treatment area 12 still is provided with oxygen deficiency packing layer 122. Specifically, a support (not shown) is arranged in the anoxic filler layer 122, the support is provided with a plurality of porous fillers, such as ceramic particles or other porous spherical fillers, etc., a biological film is formed on the porous fillers, and a large number of microorganisms for carrying out an anoxic reaction are accumulated in the biological film, so that the biological concentration in the anoxic treatment region 12 is increased, and the anoxic treatment efficiency is improved. Further, the water outlet of the overflow elbow 112 extends into the anoxic treatment region 12 at a position below the anoxic filler layer 122, and the water outlet of the overflow elbow 112 is disposed toward the anoxic filler layer 122, so as to prevent pretreated effluent discharged from the water outlet of the overflow elbow 112 from directly falling into the return water region 121, and to disperse sludge deposited in the return water region 121 to be mixed with sewage again, thereby affecting the precipitation efficiency of sludge in the return water region 121.
So, in this embodiment, change the flow state of water in anaerobism preliminary treatment district 11 in advance through setting up cowling panel 111, avoid inlet tube 20 to go out the water and strike the water in anaerobism preliminary treatment district 11, destroy the anaerobic condition of water, influence anaerobic treatment efficiency, and simultaneously, rivers pass through cowling panel 111 rectification back, flow more steadily, thereby can improve the precipitation efficiency of mud in the water, the messenger carries less mud through overflow return bend 112 discharge water, avoid too much entering oxygen deficiency treatment district 12 of mud, cause the filler to block up, influence the normal clear of oxygen deficiency reaction.
Further, in this embodiment, the parallel interval of polylith cowling panel 111 sets up, and the tip that respectively keeps away from third division wall 18 links to each other through connecting plate 113, the water inlet that overflows the return bend is located between connecting plate 113 and the third division wall 18, connecting plate 113, form a plurality of water areas of depositing between cowling panel 111 and the third division wall 18, water flow state is steady in the water area of depositing, it intakes in the water area to set up to overflow return bend 112, can avoid the effluent to appear the short-term flow, ensure that the water in the anaerobism pretreatment area 11 rethread after the rectification of cowling panel 111 overflows the return bend 112 and discharges.
Furthermore, in this embodiment, the water in the anaerobic pretreatment region 11 is submerged inflow water, i.e. the water outlet of the water inlet pipe 20 is deep below the water level in the anaerobic pretreatment region 11, so as to avoid the water from falling into the oxygen-charging chamber and damaging the anaerobic environment in the anaerobic pretreatment region 11.
In another embodiment of the present invention, as shown in fig. 3, a basket 114 for filtering Suspended Solids (SS) in the domestic sewage is further disposed in the anaerobic pretreatment region 11, the water outlet of the water inlet pipe 20 is located above the rectifying plate 111, the basket 114 is located between the water outlet of the water inlet pipe 20 and the rectifying plate 111, so that the domestic sewage to be treated discharged from the water outlet of the water inlet pipe 20 is flushed into the basket 114, and the basket 114 intercepts the suspended solids, such as leaves, poultry feathers, plastics, etc., in the water body, so as to separate the suspended solids from the water.
Specifically, in the present embodiment, as shown in fig. 1 to 3, the top of the treatment tank 10 corresponding to the anaerobic pretreatment region 11 is provided with a first cleaning hole 101, and the basket 114 is suspended in the anaerobic pretreatment region 11 through a rope or the like, so that the suspended solids collected in the basket 114 can be cleaned through the first cleaning hole 101. Not using first clear hole 101 of drawing, using heavy well lid to cover first clear hole 101 of drawing, avoid outside debris to fall into anaerobic pretreatment water district in.
In another embodiment of the present invention, as shown in fig. 1 to 3, a distribution pipe 19 for distributing water in the anaerobic pretreatment region 11 to the aerobic treatment region 13 is further installed in the treatment tank 10, a water inlet of the distribution pipe 19 is located in the anaerobic pretreatment region 11, a water outlet of the distribution pipe 19 is located in the aerobic treatment region 13, and the distributed sewage is discharged in a manner of falling water, thereby pre-oxygenating the anaerobic treatment water discharged from the anaerobic pretreatment region 11. Because most of the aerobic microorganisms in the aerobic treatment zone 13 are heterotrophic bacteria, the metabolic propagation of the aerobic microorganisms needs organic matters to provide energy, the concentration of the organic matters in the water body is reduced after the anaerobic treatment, and the metabolic demand of the heterotrophic microorganisms in the aerobic treatment zone 13 can not be met, therefore, the pretreated water in the anaerobic pretreatment zone 11 is directly discharged into the aerobic treatment zone 13 beyond the anaerobic treatment zone 12 through the distribution pipe 19, so as to supplement the content of the organic matters in the aerobic treatment zone 13, ensure that the microorganisms in the aerobic treatment zone 13 can normally grow and metabolize, and further ensure that the microorganisms have enough activity to carry out various biochemical reactions.
Further, in the present embodiment, the ratio of the flow rate of the water discharged from the distribution pipe 19 into the aerobic treatment zone 13 to the flow rate discharged from the anoxic treatment zone 12 into the aerobic treatment zone 13 is about 3: 7, distributing the effluent of the anaerobic pretreatment area 11 under the condition of the ratio, so as to ensure that the organic matter content in the water body in the aerobic treatment area 13 is sufficient.
In another embodiment of the present invention, the total volume of the treatment tank 10 is about 2m3The volume ratio of the anaerobic pretreatment zone 11 to the anoxic treatment zone 12 to the aerobic treatment zone 13 to the precipitation effluent zone 14 is 1.5:1:2:0.5, so that the volume ratio of the anaerobic pretreatment zone 11 to the anoxic treatment zone 12 to the aerobic treatment zone 13 to the precipitation effluent zone 14 is determined through digital flow state analysis, water quality model simulation, engineering practice and the like, and the volume of the treatment tank 10 is greatly reduced on the basis that the optimal treatment effect is achieved in each treatment zone.
In another embodiment of the present invention, as shown in fig. 1 to 3, a first access hole 103 is opened at the top of the treatment tank 10 corresponding to the aerobic treatment zone 13, a second access hole 104 is opened at the top of the treatment tank 10 corresponding to the anoxic treatment zone 12, and the service personnel can repair and maintain the devices and structures in the aerobic treatment zone 13/the anoxic treatment zone 12 through the first access hole 103/the second access hole 104. Instead of using the first manhole 103 and the second manhole 104, the first manhole 103 and the second manhole 104 are covered with a heavy manhole cover, thereby preventing external impurities from falling into the anoxic treatment area 12/the aerobic treatment area 13.
In another embodiment of the present invention, as shown in fig. 1 to 3, the water outlet pipe 30 is connected to the upper portion of the treatment tank 10, and the upper clear water in the sedimentation water outlet region 14 is continuously discharged from the treatment tank 10 through the water outlet pipe 30. Further, the top of the treatment tank 10 corresponding to the sedimentation water outlet zone 14 is further provided with a second cleaning hole 102, and when the amount of sludge deposited in the sedimentation treatment zone reaches the storage limit value, the suction device can extend into the sedimentation water outlet zone 14 through the second cleaning hole 102 and suck out the deposited sludge. Instead of using the second cleaning holes 102, a heavy manhole cover is also used to cover the second cleaning holes 102 to prevent external impurities from falling into the sedimentation outlet zone 14.
In another embodiment of the present invention, as shown in fig. 1 to 4, a tubular sterilizer 31, such as a tubular ultraviolet sterilizer, is further disposed in the water outlet pipe 30 for killing other toxic bacteria or viruses in the water body before discharging the effluent, so as to further improve the biological safety of the effluent.
In another embodiment of the present invention, the above-mentioned ecological energy-saving rural sewage treatment equipment further includes a solar power generation device 40, this solar power generation device 40 is not only limited to include solar panel, charge and discharge battery, etc., can convert solar energy into electric energy, still be provided with dissolved oxygen detector 133 in the aerobic treatment zone 13, a concentration for the dissolved oxygen in the aerobic treatment zone 13 is detected at the trial time, ensure that the water body dissolved oxygen in the aerobic treatment zone 13 satisfies the demand of aerobic reaction, further, solar power generation device 40 is connected with aeration device 132 and dissolved oxygen detector 133 electricity, so, provide electric energy for aeration device 132 and dissolved oxygen detector 133 through solar power generation, make the ecological energy-saving rural sewage treatment equipment of this embodiment more energy-saving and environment-friendly.
In another embodiment of the present invention, as shown in fig. 3, the treatment tank 10 is preferably a glass reinforced plastic tank, the tank body is made of sand or concrete, the treatment tank 10 is buried under the ground 100, and the excavation of the buried pit body is specifically described in "selection and burying of glass reinforced plastic pool" (14SS706) construction.
The treatment effect of the ecological energy-saving rural sewage treatment equipment is described by a specific embodiment as follows:
in this embodiment, the water inlet pipe 20 is fed with water, i.e. the water is fed into the treatment tank 10, as follows: the design water inflow is 530L/d, wherein, the COD inflow is 291.5kg/d, BOD5The entering amount is 137.8kg/d, the ammonia nitrogen entering amount is 24.38kg/d, and the TP entering amount is 4.24 kg/d.
The treatment tank 10 has a volume of 2m3The length of the treatment tank 10 is 2m, the width is 1.3m, the maximum effective water depth in the tank body is 0.8m, and the anaerobic treatment tank is used for anaerobic treatmentThe volumes of the pretreatment zone 11, the anoxic treatment zone 12, the aerobic treatment zone 13 and the sedimentation water outlet zone 14 are respectively 0.624m3、0.2m3、0.823m3And 0.35m3The hydraulic retention time of the anoxic treatment zone 12, the aerobic treatment zone 13 and the sedimentation water outlet zone 14 is respectively 27.9h, 9.1h, 37.3h and 15.8 h.
The aperture of the rectifying hole 1111 in the rectifying plate 111 is 20mm, the spacing distance between two adjacent rectifying plates 111 is 60mm, and the setting height of the water outlet of the water inlet pipe 20 is 180 mm.
The sludge concentration of the aerobic treatment zone 13 is 2g/L, the effective water depth is 0.8m, the sludge load is 0.04 kgBOD/kgMLSS/d, and the aeration amount is designed to be 0.20m3The gas-water ratio is 9: 1.
the effective water depth of the precipitation water outlet zone 14 is 0.6m, and the surface load is 0.086m3/m2·h。
The size of the solar panel of the solar power generation device 40 is 540mm multiplied by 670mm, the power of the solar panel is 50w, the solar power generation device 40 is provided with a 10AH energy storage lithium battery, and the energy storage lithium battery can last for 7 h.
The default control time of the aeration device 132 is 6: 00-18: starting up for 50 minutes and stopping for 10 minutes between 00 hours, wherein the ratio of the time interval is 19: 00-5: starting up the machine for 40 minutes and stopping the machine for 80 minutes between 00 hours, wherein the aeration device 132 adopts an MPQ direct-flow air pump, 38L/min, P is 18w, and the noise is less than 40 dB.
Under the above-mentioned influent water quality and design parameters, the ecological energy-saving rural ignorance treatment equipment of this embodiment treats domestic sewage, and the quality of the effluent discharged through the water outlet pipe 30 after treatment meets the discharge requirement for relevant pollutants in the first class B standard of pollutant discharge standard of urban sewage treatment plant (as shown in the following table).
| Serial number | Name of contaminant | Pollutant Limit (mg/L) |
| 1 | COD | 60 |
| 2 | |
20 |
| 3 | |
20 |
| 4 | NH4 +-N | 8 |
| 5 | |
20 |
| 6 | TP | 1 |
The utility model also provides an ecological energy-saving rural sewage treatment system, which comprises the ecological energy-saving rural sewage treatment equipment.
The utility model discloses a rural sewage treatment system of ecological energy-saving, through using foretell rural sewage treatment equipment of ecological energy-saving, it can realize the high-efficient degradation to pollutant in the domestic sewage, goes out water quality of water and can reach the one-level B standard of "town sewage treatment plant pollutant emission standard", and it can regard as farmland irrigation water or river course to supply the water source and directly discharge to go out water, is applicable to the water treatment project that the scale is little, in large quantity and high dispersion.
It is understood that, in some specific embodiments, the above-mentioned ecological energy-saving rural sewage treatment equipment may be used in combination with some other water treatment facilities or processes, so as to form a treatment system, for example, when the requirement for the quality of the effluent water is higher, it may be used in combination with a membrane treatment process such as ultrafiltration and nanofiltration, etc., or, for example, when the domestic sewage to be treated, which is discharged into the treatment tank 10 through the water inlet pipe, contains some other unusual difficultly-degradable pollutants, it may also be provided with a treatment facility or process, etc., at the front end or the tail end, which correspondingly degrades the difficultly-degradable pollutants.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An ecological energy-saving rural sewage treatment device is characterized by comprising a treatment tank, and a water inlet pipe and a water outlet pipe which are connected to the treatment tank, wherein an anaerobic pretreatment area, an anoxic treatment area, an aerobic treatment area and a precipitation water outlet area are arranged in the treatment tank;
the water inlet pipe is communicated with the anaerobic pretreatment zone and is used for discharging domestic sewage to be treated from the outside into the anaerobic pretreatment zone for anaerobic pretreatment, the anoxic treatment zone is communicated with the anaerobic pretreatment zone and is used for carrying out anoxic treatment on pretreated effluent discharged from the anaerobic pretreatment zone, the aerobic treatment zone is communicated with the anoxic treatment zone and is used for carrying out aerobic treatment on anoxic treated effluent discharged from the anoxic treatment zone, the sedimentation effluent zone is communicated with the aerobic treatment zone and is used for storing sedimentation aerobic treated effluent discharged from the aerobic treatment zone, and the water outlet pipe is connected with the sedimentation effluent zone and is used for discharging water in the sedimentation effluent zone;
wherein, a backflow structure is further arranged between the anaerobic pretreatment area and the aerobic treatment area, and the backflow structure is used for enabling part of aerobic treatment water in the aerobic treatment area to flow back to the anoxic treatment area.
2. The ecological energy-saving rural sewage treatment equipment according to claim 1, characterized in that: a first partition wall is arranged in the treatment tank, the anoxic treatment area and the aerobic treatment area are respectively positioned at two opposite side parts of the first partition wall, a first overflowing hole is formed in the first partition wall, and anoxic treatment effluent is discharged into the aerobic treatment area through the first overflowing hole;
an aerobic packing layer and an aeration device are arranged in the aerobic treatment area, the aeration device is arranged on the bottom wall of the treatment tank, and the aerobic packing layer extends upwards from the bottom wall of the treatment tank.
3. The ecological energy-saving rural sewage treatment equipment according to claim 2, characterized in that: the backflow structure is the guide plate, the guide plate include with the supporting part that the diapire of treatment tank links to each other and with the water conservancy diversion portion that the supporting part links to each other, first partition wall have with the free end that the diapire interval of treatment tank set up, the supporting part is located the below of free end and with the interval is formed with the return water district between the first partition wall, the guide plate is located in good oxygen processing district and slope to the return water district sets up, the free end with the supporting part or water conservancy diversion portion interval sets up and is formed with the backward flow passageway, water conservancy diversion portion part shelters from good oxygen packing layer with aeration equipment.
4. The ecological energy-saving rural sewage treatment equipment according to claim 3, characterized in that: the treatment tank is also internally provided with a second partition wall, the aerobic treatment zone and the sedimentation water outlet zone are respectively positioned at two opposite side parts of the second partition wall, a second overflowing hole is formed in the position where the second partition wall is connected with the bottom wall of the treatment tank, and the aerobic treatment water is discharged into the sedimentation water outlet zone through the second overflowing hole.
5. The ecological energy-saving rural sewage treatment equipment according to claim 1, characterized in that: still be provided with the third division wall in the treatment tank, anaerobic pretreatment district with the oxygen deficiency treatment district is located respectively the relative both sides portion of third division wall, the third division wall is located the interval sets up the polylith cowling panel on the lateral wall in the anaerobic pretreatment district, still install on the third division wall and overflow the return bend, the water inlet that overflows the return bend stretches into in the anaerobic pretreatment district and be located two adjacent between the cowling panel, the middle part position in oxygen deficiency treatment district still is provided with the oxygen deficiency packing layer, overflow the delivery port of return bend in position department below the oxygen deficiency packing layer stretches into in the oxygen deficiency treatment district, just overflow the delivery port orientation of return bend the setting of oxygen deficiency packing layer.
6. The ecological energy-saving rural sewage treatment equipment of claim 5, characterized in that: the multiple flow-regulating plates are arranged in parallel at intervals, the end parts far away from the third partition wall are connected through a connecting plate, and a water inlet of the overflowing elbow is located between the connecting plate and the third partition wall.
7. The ecological energy-saving rural sewage treatment equipment of claim 5, characterized in that: the anaerobic pretreatment district still is provided with and is used for filtering the hand-basket of the suspended solid in the domestic sewage, the delivery port of inlet tube is located the top of cowling panel, the hand-basket is located the delivery port of inlet tube with between the cowling panel.
8. The ecological energy-saving rural sewage treatment equipment according to any one of claims 1 to 7, characterized in that: and the treatment tank is also internally provided with a distribution pipe used for distributing the water in the anaerobic pretreatment area to the aerobic treatment area, a water inlet of the distribution pipe is positioned in the anaerobic pretreatment area, and a water outlet of the distribution pipe is positioned in the aerobic treatment area.
9. The ecological energy-saving rural sewage treatment equipment according to any one of claims 1 to 7, characterized in that: the volume ratio of the anaerobic pretreatment zone to the anoxic treatment zone to the aerobic treatment zone to the precipitation effluent zone is 1.5:1:2: 0.5.
10. An ecological energy-saving rural sewage treatment system, which is characterized by comprising the ecological energy-saving rural sewage treatment equipment of any one of claims 1-9.
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| CN202022100937.XU CN213596107U (en) | 2020-09-22 | 2020-09-22 | Ecological energy-saving rural sewage treatment equipment and system |
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| CN202022100937.XU CN213596107U (en) | 2020-09-22 | 2020-09-22 | Ecological energy-saving rural sewage treatment equipment and system |
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| Country | Link |
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