CN211896270U - Small-sized micro-power water purifying device - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment, in particular to a small-sized micro-power water purifying device, which comprises a box body, wherein the box body is sequentially divided into an anaerobic anoxic zone, an aerobic zone and a sedimentation zone by a first clapboard and a first inclined plate, and the anaerobic anoxic zone is a plurality of unpowered reaction chambers; the aerobic zone is communicated with the sedimentation zone through a gap arranged between the lower end of the first inclined plate and the bottom surface of the box body, the inclined direction of the first inclined plate is inclined downwards from the aerobic zone to the sedimentation zone, and the sedimentation zone is provided with a sludge reflux mechanism; aims to realize the unpowered setting of the anaerobic anoxic zone and the reflux of the sludge in the settling zone, has compact layout of the whole equipment, small occupied area and low energy consumption, and is suitable for the treatment of rural domestic sewage.

Description

Small-sized micro-power water purifying device

Technical Field

The utility model belongs to the technical field of sewage treatment, concretely relates to little miniature fine motion power purifier.

Background

The rural water environment is a general name of surface water bodies, soil water and underground water distributed in rural rivers, lakes and marshes, ditches, ponds, reservoirs and the like, is an important resource for rural production and rural life, and the rural domestic sewage is mainly sewage generated by rural residents in daily life, such as clothes washing, bathing, kitchen, and the like.

The existing widely used sewage treatment process has the problems of complex equipment structure, difficult operation and maintenance, large energy consumption and the like, and is not suitable for sewage treatment in rural areas. Aiming at rural domestic sewage treatment, two modes are mainly adopted at present: the method comprises the following steps of firstly, centralized treatment, which mainly aims at the places near the suburbs, and the sewage is collected in a centralized manner and is discharged to an urban municipal sewage treatment plant for treatment; and secondly, household treatment, which aims at treating most of domestic sewage of scattered households.

Although integrated equipment aiming at rural domestic sewage treatment is diversified in the market in recent years, the treatment effect is poor, the manufacturing cost is high, the energy consumption is high, and a plurality of micro-power sewage treatment devices are also provided, but an anaerobic tank and an anoxic tank are separately arranged, so that the whole occupied area of the equipment is large, and in the existing integrated sewage treatment equipment, activated sludge is mostly settled at the bottom, so that few active microorganisms really participating in the reaction in the tank directly influence the sewage treatment effect.

Disclosure of Invention

In order to solve the problems, the utility model provides a small micro-power water purifying device.

In order to achieve the above object, the utility model adopts the following technical scheme: the device comprises a box body, wherein the box body is sequentially divided into an anaerobic anoxic zone, an aerobic zone and a sedimentation zone which are communicated by a first partition plate and a first inclined plate, and the anaerobic anoxic zone is a plurality of unpowered reaction chambers; the aerobic zone is communicated with the sedimentation zone through a gap arranged between the lower end of the first inclined plate and the bottom surface of the box body, the inclined direction of the first inclined plate is inclined downwards from the aerobic zone to the sedimentation zone, and the sedimentation zone is provided with a sludge backflow mechanism; and a secondary reflux mechanism is arranged in the anaerobic anoxic zone.

Preferably, the anaerobic anoxic zone is divided into six reaction chambers; the flowing direction of the sewage from the first reaction chamber to the sixth reaction chamber in turn is an up-down curve.

Preferably, the reaction chamber is partitioned by a second partition plate parallel to the first partition plate, and a third partition plate and a fourth partition plate perpendicular to the first partition plate; the first reaction chamber and the second reaction chamber, the second reaction chamber and the third reaction chamber, the fourth reaction chamber and the fifth reaction chamber are respectively connected through holes on the upper sides of the third partition plate and the fourth partition plate, and the third reaction chamber and the fourth reaction chamber, the fifth reaction chamber and the sixth reaction chamber are respectively connected through holes on the lower sides of the second partition plate and the third partition plate; the sixth reaction chamber is connected with the aerobic zone through a through hole at the upper side of the first clapboard.

Preferably, the sludge backflow mechanism comprises a main backflow pipe, one end of the main backflow pipe is placed at the bottom of the sedimentation area, and the other end of the main backflow pipe is placed at the upper part of the first reaction chamber; the main return pipe is arranged in one end pipe of the sedimentation area and inserted into a main gas lifting pipe, and the other end of the main gas lifting pipe is connected with an air source.

Preferably, the sludge backflow mechanism comprises a main backflow pipe, one end of the main backflow pipe is placed at the bottom of the sedimentation area, and the other end of the main backflow pipe is placed in the sixth reaction chamber; the secondary reflux mechanism comprises a secondary reflux pipe arranged on the sixth reaction chamber, one end of the secondary reflux pipe is placed at the bottom of the sixth reaction chamber, and the other end of the secondary reflux pipe is placed at the upper part of the first reaction chamber; the secondary return pipe is arranged at one end of the six reaction chambers, the main return pipe is arranged in one end pipe of the sedimentation zone, the main gas stripping pipe and the secondary gas stripping pipe are respectively inserted into the main gas stripping pipe and the secondary gas stripping pipe, and the other ends of the main gas stripping pipe and the secondary gas stripping pipe are connected with an air source through an air inlet main pipe.

Preferably, the main return pipe is positioned at the bottom of the settling zone and is communicated with a section of transverse pipe extending transversely, the length of the transverse pipe is smaller than the width of the box body, and a plurality of branch pipes capable of adjusting the flow are arranged on the circumferential direction of the transverse pipe.

Preferably, a detachable aeration device is arranged at the bottom of the aerobic zone, the aeration device comprises a rigid grid, the aeration pipe is detachably connected to the rigid grid, and an air inlet of the aeration pipe is connected with an air source; rigid graticule mesh bilateral symmetry is provided with the riser, the fixed spring button that sets up in riser upper end, slidable connection lagging on the riser, evenly set up the several through-hole on the lagging, the through-hole corresponds with spring button position, lagging upper end fixed connection couple, the direction of putting is put with rigid graticule mesh opposite direction to hanging of couple.

Preferably, the aeration pipes are arranged into three concentric circles, each concentric circle is connected with the air inlet main pipe through a valve, and the aeration pipes are microporous nano aeration pipes.

Preferably, a second inclined plate is fixedly arranged at the bottom of the box body and positioned in the aerobic zone, the inclined direction of the second inclined plate is consistent with that of the first inclined plate, the height of the second inclined plate is smaller than half of that of the first inclined plate, and a slit is formed between the second inclined plate and the first inclined plate.

The invention has the advantages that: 1. the anaerobic anoxic zone is set to be in a non-powered type, so that sewage can flow in an up-and-down type curve mode in the anaerobic anoxic zone, activated sludge in the anaerobic anoxic zone is fully reacted with the sewage in a passive mode, the sludge is not settled at the bottom of the anaerobic anoxic zone for a long time, the amount of the activated sludge participating in the action is maximized, and the sewage treatment effect is enhanced; 2. the anaerobic anoxic zone is divided into a plurality of reaction chambers, so that the occupied area of the whole device can be shortened, the whole device is small and exquisite and is suitable for various sewage treatment occasions, and the whole device can achieve the sewage treatment effect of the same equipment while reducing the occupied area; 3. the whole device is suitable for rural sewage treatment, one device is suitable for 2-4 households, the average sewage treatment amount in 1 day can reach 1.0-1.5 tons, the power consumption is less than 1 DEG, the whole process is operated automatically, the operation is stable, no personnel are needed to watch, and remote operation monitoring can be performed as required; 4. through setting whole device to squarely, oxygen deficiency anaerobic zone, good oxygen district, settling zone rational arrangement improve the space utilization of whole device, when increasing the reacting chamber quantity, guarantee that the space in good oxygen district is not by corresponding reduction, and the sewage that whole device can hold is more, can effectively shorten sewage treatment's time, improves sewage treatment's ability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged partial view of the secondary stripper tube of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic structural view of a third separator;

FIG. 5 is a schematic structural view of a fourth separator;

FIG. 6 is a schematic structural diagram of a first partition board;

FIG. 7 is a schematic structural view of a second separator;

FIG. 8 is a schematic view of the structure of an aeration apparatus;

FIG. 9 shows an embodiment of an aeration tube

FIG. 10 is another embodiment of an aerator pipe;

FIG. 11 is a schematic view of the construction of the pipe clamp;

FIG. 12 is a schematic view of the cross tube configuration;

fig. 13 is a partially enlarged view of the branch pipe.

In the figure: 1-a main return pipe; 2-a water inlet; 3, a box body; 4-a second separator; 5-a first separator; 6-an air inlet of an aeration pipe; 7-an aerator pipe; 8-a second sloping plate; 9-a first sloping plate; 10-a water outlet; 11-an aerobic zone; 12-a third separator; 13-a fourth separator; 14-a first reaction chamber; 15-a second reaction chamber; 16-a third reaction chamber; 17-a fourth reaction chamber; 18-a fifth reaction chamber; 19-a sixth reaction chamber; 20-a precipitation zone; 21-secondary stripping tube; 22-horizontal tube; 23-secondary return pipe; 24-a branch pipe; 25-a rigid mesh; 26-vertical plate; 27-a spring button; 28-sheathing; 29-hanging hooks; 30-a through hole; 31-plug; 32-pipe clamp; 33-a rotating part; 34-a fixed part; 35-a rotating joint; 36-main gas lift pipe.

Detailed Description

The utility model belongs to the technical field of sewage treatment, concretely relates to little miniature fine motion power purifier, whole device light in weight, the average 1 day volume of handling sewage can reach 1.0 ~ 1.5 tons, and the power consumption is less than 1 degree electricity.

As shown in fig. 1-7, the sewage treatment device comprises a box body 3, wherein the box body 3 can be formed by SMC hot pressing in an integrated manner, and the material has the advantages of ageing resistance, high strength, strong corrosion resistance, light weight, convenience in installation, short production period and the like, and can be better applied to sewage treatment. The box body 3 is sequentially divided into an anaerobic anoxic zone, an aerobic zone 11 and a sedimentation zone 20 which are communicated by a first clapboard 5 and a first inclined plate 9, and the clapboard in the box body 3 is made of PVC plates.

The anaerobic anoxic zone is a plurality of unpowered reaction chambers, six reaction chambers are preferred in the invention, more reaction chambers can be arranged according to the requirement, the flowing direction of the sewage from the first reaction chamber 14 to the sixth reaction chamber 19 in turn is an up-down curve, and the sewage is baffled from the first reaction chamber 14 to the sixth reaction chamber 19 through gravity flow, so that the retention time of the sewage in the anaerobic anoxic zone can be increased, and the concentration and the reaction time of microorganisms in the activated sludge can be increased.

The reaction chamber is formed by separating a second partition plate 4 parallel to the first partition plate 5, and a third partition plate 12 and a fourth partition plate 13 vertical to the first partition plate 5; the first reaction chamber 14 and the second reaction chamber 15, the second reaction chamber 15 and the third reaction chamber 16, the fourth reaction chamber 17 and the fifth reaction chamber 18 are respectively connected through holes on the upper sides of the third partition plate 12 and the fourth partition plate 13, the third reaction chamber 16 and the fourth reaction chamber 17, and the fifth reaction chamber 18 and the sixth reaction chamber 19 are respectively connected through holes on the lower sides of the second partition plate 4 and the third partition plate 12; the sixth reaction chamber 19 is connected with the aerobic zone 11 through a through hole at the upper side of the first partition 5. It can be understood that through the partition board arranged in the anaerobic anoxic zone and the through holes with different heights and positions arranged on the partition board, sewage can flow into the first reaction chamber 14 from the water inlet 2, and then can realize up-down curve flow, for example, in the invention, six reaction chambers are adopted in the anaerobic anoxic zone, the height of each reaction chamber is about 1m, and the total path of the sewage flowing through the six reaction chambers is about 6m, so that not only can the reaction time be greatly increased, but also the overall floor area of the equipment can be saved in space.

The sewage after anaerobic treatment flows to the aerobic zone from the anoxic zone, the aerobic zone 11 is communicated with the sedimentation zone 20 through a gap arranged between the lower end of the first inclined plate 9 and the bottom surface of the box body 3, the mixed liquid (sludge and water) after aerobic treatment enters the lower part of the sedimentation zone from the gap between the bottom surface of the box body 3 and the first inclined plate 9, and the sludge extruded into the sedimentation zone 20 from the aerobic zone 11 is gathered and precipitated at the bottom of the sedimentation zone 20 due to the inclined arrangement of the first inclined plate 9 because the inclined direction of the first inclined plate 9 is that the sludge and water are obliquely downwards arranged from the aerobic zone 11 to the sedimentation zone 20; in the settling zone 20, the water flow flows from bottom to top, the flow rate of the water flow is slow, so that the sludge is gradually settled, the supernatant can flow out from the water outlet 10, and a filtering system can be arranged in the water outlet pipe to further purify the water quality, so that the filtered water reaches the discharge standard.

The settling zone 20 is provided with a sludge backflow mechanism, the sludge backflow mechanism comprises a main backflow pipe 1, one end of the main backflow pipe 1 is placed at the bottom of the settling zone 20, and the other end of the main backflow pipe is placed at the upper part of the first reaction chamber 14; the main return pipe 1 is placed in one end pipe of the sedimentation zone 20, a main gas lifting pipe 36 is inserted, and the other end of the main gas lifting pipe 36 is connected with a gas source. The air source can adopt a fan, and the invention adopts a diaphragm type air pump; the pipe diameter ratio between the main gas lifting pipe 36 and the main return pipe 1 and the length of the main gas lifting pipe 36 extending into the main return pipe 1 can be designed according to different actual use requirements; the ratio of the pipe diameters of the main gas lifting pipe 36 and the main return pipe 1 is larger than 1:5, and the length of the main gas lifting pipe 36 extending into the main return pipe 1 is more than 15 mm. After the activated sludge in the settling zone 20 continuously flows back to the first reaction chamber 14 through the main return pipe 1, the activated sludge continuously acts in the anaerobic anoxic zone, so that the sludge in the anaerobic anoxic zone is always kept at a higher concentration (7000-8000mg/L), and the efficiency of sewage treatment is improved.

Another embodiment of the placement of the main return pipe 1 of the present invention is that the sludge return mechanism comprises a main return pipe 1, one end of the main return pipe 1 is placed at the bottom of the settling zone 20, and the other end is placed in the sixth reaction chamber 19; two water outlets can be arranged at the water outlet end of the main return pipe 1, valves with adjustable flow are arranged on the two water outlets, the two water outlets are respectively arranged at the upper parts of the sixth reaction chamber 19 and the first reaction chamber 14, the flow of the water outlet arranged at the upper part of the sixth reaction chamber 19 is smaller than that of the water outlet arranged at the upper part of the first reaction chamber 14, and the water outlet can be adjusted according to actual conditions so as to achieve the effect of shunting the activated sludge. The activated sludge is dispersed to different areas, so that the phenomenon that the quality of effluent is influenced because the activated sludge is excessively gathered at one position is avoided.

A secondary reflux mechanism is arranged in the anaerobic anoxic zone and comprises a secondary reflux pipe 23 arranged on a sixth reaction chamber 19, one end of the secondary reflux pipe 23 is placed at the bottom of the sixth reaction chamber 19, and the other end is placed at the upper part of the first reaction chamber 14; the secondary return pipe 23 is arranged at one end of the sixth reaction chamber 19 and inserted into the secondary gas stripping pipe 21, and the secondary gas stripping pipe 21 is connected with a gas source. The main return pipe 1 is arranged in the sixth reaction chamber 19, and the suspension of the sludge and the water in the sixth reaction chamber 19 flows back to the first reaction chamber 14 through the secondary return pipe, so as to achieve the purpose of denitrification.

The main return pipe 1 is positioned at the bottom of the settling zone 20 and is communicated with a section of transverse pipe 22 extending transversely, a plurality of branch pipes 24 capable of adjusting flow are arranged on the transverse pipe 22 in the circumferential direction, the length of the transverse pipe 22 is smaller than the width of the box body 3, and the transverse pipe 22 is communicated with the main return pipe 1, so that sludge at the bottom of the settling zone 20 can be sucked into the main return pipe 1 through the transverse pipe 22. As shown in fig. 9, the pipe end of the branch pipe 24 is a circular truncated cone, the top end of the circular truncated cone is closed, a plurality of through holes 30 are formed in the side surface of the circular truncated cone, a plug 31 with an open top end is sleeved outside the branch pipe 24 and connected with the branch pipe through threads, and the shape of the plug 31 is matched with that of the branch pipe 24; when the plug 31 is not completely screwed, the opening at the top end of the plug 31 and the through hole 30 on the branch pipe 24 form a passage for sludge to flow into the transverse inlet pipe 22.

It can be understood that when the plug 31 is screwed to the innermost end of the branch pipe 24, the through hole 30 on the branch pipe 24 is in a closed state, that is, the plug 31 completely shields the through hole 30, so that the branch pipe 24 cannot suck sludge; when the plug 31 is screwed to the outermost end of the branch pipe 24, the maximum suction amount of the branch pipe 24 is reached, and sludge can be quickly sucked into the main return pipe 1. The sludge absorption amount of the branch pipe 24 can be adjusted according to the screwing of the plug 31, and when the water quality is better and the sludge production amount is not large, the plug 31 can be screwed to the position with small absorption amount; when the water quality is poor and the sludge production amount is large, the plug 31 can be screwed to the position of the maximum suction amount so as to quickly suck the sludge. The plug 31 may be configured to be screwed onto the branch pipe 24 only, but not removed from the branch pipe 24, to prevent the plug 31 from falling off. Under the condition that the width of the transverse pipe 22 is short, the flow of each branch pipe 24 on the transverse pipe 22 is uniform; if the transverse pipe 22 is long and the sludge adsorption is uneven, the screwing position of the plug 31 on the branch pipe 24 can be properly adjusted according to the distance between the branch pipe 24 and the main gas lifting pipe 36, namely the flow of the branch pipe 24 close to the main gas lifting pipe 36 is small, and the flow of the branch pipe 24 far from the main gas lifting pipe 36 is large, so that the flow of all the branch pipes on the transverse pipe 22 is even, sludge can be uniformly absorbed, and the sludge can flow back to an anaerobic anoxic area.

The aerobic zone 11 bottom is provided with detachable aeration equipment, aeration equipment includes the rigidity graticule mesh, and the area size of rigidity graticule mesh is equivalent with the area size of aerobic zone 11 bottom, and the rigidity graticule mesh has certain weight, can directly place in the bottom of aerobic zone 11, and the rigidity graticule mesh can not float because of the buoyancy of water, aeration pipe 7 is fixed on the rigidity graticule mesh, aeration pipe 7's air inlet and air supply are connected, can make aeration pipe 7 evenly give vent to anger, provide oxygen for aerobic zone 11.

As shown in fig. 8, the vertical plates 26 are disposed at four corners of the rigid grid 25, so as to better fix the rigid grid 25, the spring buttons 27 are fixedly disposed at the upper ends of the vertical plates 26, the vertical plates 26 are slidably connected to the sleeve plate 28, a plurality of through holes are uniformly disposed on the sleeve plate 28, the through holes correspond to the spring buttons 27, the upper ends of the sleeve plate 28 are fixedly connected to the hooks 29, and the hanging direction of the hooks 29 is opposite to the direction of the rigid grid 25. It can be understood that the vertical plate 26 and the sleeve plate 28 are sleeved together, and when in use, the length of the vertical plate can be adjusted in the vertical direction, so as to adjust the depth of the rigid grid 25 in the aerobic zone 11; during adjustment, the height can be adjusted only by pressing the spring button 27, and then the spring button 27 retracts into the sleeve plate 28, and after the height is adjusted to a proper height, the spring button 27 automatically pops out from the corresponding through hole, so that the position locking can be realized; the deepest position of the rigid grid 25 is the bottom of the box 3 and can be adjusted up to the middle position of the box 3. Couple 29 can hang and put on the outer wall of box 3 to the realization is to rigidity graticule mesh 25's fixed, when needs take out rigidity graticule mesh 25 and overhaul or when changing, only needs to pull 29 upwards couples, can take out.

The rigid grid net 25 is detachably connected with the aeration pipe 7, the air inlet of the aeration pipe 7 is connected with the air source through a valve, so that the aeration pipe 7 can uniformly give out air to provide oxygen for the aerobic zone 11. The aeration pipe 7 is connected with the rigid grid 25 through the pipe clamp 32, fig. 10 is a schematic structural view of the pipe clamp 32, the pipe clamp 32 includes a rotating part 33 at the upper end, the rotating part 33 is rotatably connected with a fixing part 34 at the lower end, a cavity for the aeration pipe 7 and the rigid grid 25 to be clamped in is respectively arranged between the rotating part 33 and the fixing part 34, and the pipe clamp 32 is made of elastic plastic. When the pipe clamp 32 is used, the pipe clamp is made of elastic plastic materials, the connection can be realized only by pressing the pipe clamp into the rigid grid 25, and the rotating part 33 also realizes the fixation of the aeration pipe 7 by pressing the pipe clamp into the aeration pipe 7; the cavity of the pipe clamp 32 into which the aeration pipe 7 and the rigid grid 25 are inserted is sized to be inserted properly without falling. The pipe clamp 32 is rotatably connected to the rotating part 33 through a rotating joint 35 fixedly connected to the fixing part 34 to rotate 360 degrees, and the rotating part 33 can be rotated to various angles, thereby facilitating the installation of the aeration pipe 7 in a spiral or concentric manner.

The side wall of the rotating part 32 is provided with a plurality of through holes 33, the through holes 33 can prevent the clamping part of the pipe clamp 3 from blocking the aeration pipe 2 and influencing the aeration effect of the aeration pipe 2, and during aeration, gas can pass through the through holes 33, so as to provide oxygen for the aerobic zone 11.

One arrangement of the aeration pipe 7 is a spiral arrangement, as shown in fig. 9, arranged at the bottom of the whole aerobic zone 11, the whole aeration pipe 7 is connected with the fan through a valve, and when the valve is opened, the aeration pipe 7 can continuously provide oxygen for the aerobic zone 11.

Another arrangement manner of the aeration pipes 7 is a concentric circle arrangement, as shown in fig. 10, the aeration pipes 7 may be arranged in three concentric circles, or may be arranged in more concentric circles according to actual requirements, and each concentric circle is connected to the air inlet main pipe through a valve; in the invention, 5 valves are respectively connected to a main air inlet pipe, each valve corresponds to one air inlet branch pipe, and the 5 air inlet branch pipes are respectively connected with a main air lifting pipe 36, a secondary air lifting pipe 21 and 3 concentric circular aeration pipes 7; when the valve works, the opening of each valve is determined according to the radius of each concentric circle, the opening of the valve corresponding to the outer ring is large, the ventilation volume is large, the opening of the valve corresponding to the inner ring is small, and the ventilation volume is small. The use of different valves to control respectively how much of the gas is introduced, so that the aeration of the whole aeration pipe 7 is more uniform in the whole area of the aerobic zone 11, and the phenomenon that the local air pressure is higher and the local air pressure is lower to cause the death of microorganisms in the activated sludge is avoided, and the activity of the whole activated sludge is reduced. The aeration pipe 7 is a microporous nano aeration pipe.

The bottom of box 3, be located the fixed second swash plate 8 that sets up of aerobic zone 11, the incline direction of second swash plate 8 is unanimous with the incline direction of first swash plate 9, the height of second swash plate 8 is less than half of first swash plate 9, constitutes the slit between second swash plate 8 and the first swash plate 9. The second inclined plate 8 is used for preventing partial sludge in the aerobic zone 11 from entering the settling zone 20, and the height of the second inclined plate 8 is preferably about 1/3 of the height of the first inclined plate 9, so that the sludge can enter the settling zone 20 less, and treated clean water can not enter the settling zone 20.

The water quality after the operation of the invention is compared as shown in the following table 1:

TABLE 1

Monitoring items	Before treatment	After treatment	Unit of
				Chemical Oxygen Demand (COD)	280.7	45	mg/L
Biochemical oxygen demand in five days	100.3	15.2	mg/L
				Suspended matter	22.5	6.1	mg/L
Ammonia nitrogen	32.7	1.48	mg/L
				Total nitrogen	34.1	19.7	mg/L

As can be seen from the above table, the main data in the water quality detection after the treatment of the invention is greatly improved compared with the data before the treatment, and the data reaches the sewage discharge standard.

The specific working mode is as follows: sewage for rural areas is uniformly discharged into a septic tank, the sewage in the septic tank is discharged into a first reaction chamber 14 through a water inlet 2 at regular time, and the sewage flows in an up-down type curve in an anaerobic anoxic zone and stays for 7 hours in the anaerobic anoxic zone; in the anaerobic zone, the oxygen content in the anaerobic zone is less than 0.2mg/L, the sewage is completely mixed with the returned sludge, part of BOD is removed, part of nitrogen-containing compounds are converted into nitrogen to be released (denitrification effect), and phosphorus-accumulating bacteria in the returned sludge release phosphorus to meet the requirement of the bacteria on the phosphorus. In the anoxic section, the oxygen content in the anoxic zone is less than or equal to 0.5mg/L, the denitrifying bacteria take undecomposed carbon-containing organic matters in the sewage as a carbon source, and nitrate radical brought by backflow in the aerobic zone 11 is reduced into nitrogen gas to be released, so that the aim of denitrification is fulfilled; then the sewage flows into an aerobic zone 11, at the moment, a fan is started to enable the oxygen content of the aerobic zone 11 to be 2-4mg/L, ammonia nitrogen in water is subjected to nitration reaction to generate nitrate radicals in an aerobic section, meanwhile, organic matters in the water are oxidized and decomposed to supply energy to phosphorus-absorbing microorganisms, the microorganisms absorb phosphorus from the water, the phosphorus enters cell tissues and is enriched in the microorganisms, and the phosphorus-rich sludge is discharged from the system in a form of phosphorus-rich sludge after precipitation and separation. Clear water treated in the aerobic zone 11 continuously extrudes into the settling zone 20, the continuously extruded clear water can carry part of activated sludge into the settling zone 20, at the moment, the clear water continuously rises, and the activated sludge settles at the bottom of the settling zone 20 due to the weight of the activated sludge; the sludge in the settling zone 20 continuously flows back to the anaerobic anoxic zone through the sludge backflow mechanism, so that the concentration of the activated sludge in the anaerobic anoxic zone is increased, and the sewage treatment efficiency and the impact resistance are improved.

The implementation steps are as follows:

1) 30-40kg of activated sludge with water is added into an aerobic zone of the device at one time, and the effective volume of the device is 1.37m³. When the device runs for a period of time, the sludge can be automatically balanced according to the running of the device.

2) The black water collected and treated in the septic tank is discharged into an anaerobic anoxic zone through a water inlet 2, the anaerobic anoxic zone is provided with six reaction chambers, the volumes of the chambers are equivalent, the total effective volume is about 0.46m3, the retention time is about 7h, a secondary return pipe 23 is arranged in a sixth reaction chamber, mixed liquor flows back to the first reaction chamber, the mixed liquor flows back by adopting a gas stripping principle, the pipe diameter ratio of the secondary gas stripping pipe to the secondary return pipe 23 is about 1:5, the reflux ratio of the mixed liquor is 300 percent, namely the ratio of the reflux quantity of the returned water of the sixth reaction chamber 19 to the first reaction chamber 14 to the flow quantity of the returned water of the main return pipe 1 to the sixth reaction chamber 19.

The water inlet flow of the water inlet 2 is 50L/h. The total daily throughput during actual use does not exceed the design throughput.

3) The sewage stays for 7 hours in the anaerobic anoxic zone and enters the aerobic zone 11, and the effective volume of the aerobic zone 11 is about 0.60m³The retention time is about 10 hours, and the aeration quantity of the aerobic zone 11 is 120L/min;

4) after the sewage stays in the aerobic zone 11 for 10 hours, the mixed liquid is slowly squeezed into the settling zone 20 through a gap formed by the second inclined plate 8 and the first inclined plate 9, the rising speed of water flow in the settling zone 20 is about 0.02m/min, mud-water separation can be fully realized, and after the sludge is settled, the supernatant liquid in the settling zone 20 is discharged through the water outlet 10; the total time of the sewage treatment of the device is 10h-20h (according to the actual use condition, 20h treatment is needed when the device is used under full load).

5) The sludge in the settling zone 20 returns to the sixth reaction chamber 19 through the main return pipe 1, the reflux adopts gas stripping, the pipe diameter ratio of the main gas stripping pipe 36 to the main return pipe 1 is 1:5, and the sludge reflux ratio is 100%.

The above embodiments are preferred embodiments, it should be noted that the above preferred embodiments should not be considered as limitations of the present invention, and the scope of the present invention should be limited by the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the invention, and such modifications and improvements should be considered within the scope of the invention.

Claims (9)

1. The utility model provides a small-size micro-power purifier, includes box (3), box (3) are separated into the anaerobism anoxic zone, good oxygen district (11) and the settling zone (20) of intercommunication, its characterized in that by first baffle (5) and first swash plate (9) in proper order: the anaerobic anoxic zone is a plurality of unpowered reaction chambers; the aerobic zone (11) is communicated with the settling zone (20) through a gap arranged between the lower end of the first inclined plate (9) and the bottom surface of the box body (3), the inclined direction of the first inclined plate (9) is inclined downwards from the aerobic zone (11) to the settling zone (20), and the settling zone (20) is provided with a sludge backflow mechanism; and a secondary reflux mechanism is arranged in the anaerobic anoxic zone.

2. The miniature micro-dynamic water purification device of claim 1, wherein: the anaerobic anoxic zone is divided into six reaction chambers; the sewage flows in a vertical curve from the first reaction chamber (14) to the sixth reaction chamber (19) in sequence.

3. The small-sized micro-power water purifying device according to claim 2, wherein: the reaction chamber is formed by separating a second partition plate (4) parallel to the first partition plate (5), a third partition plate (12) and a fourth partition plate (13) vertical to the first partition plate (5); the first reaction chamber (14) is connected with the second reaction chamber (15), the second reaction chamber (15) is connected with the third reaction chamber (16), the fourth reaction chamber (17) is connected with the fifth reaction chamber (18) through holes on the upper sides of the third partition plate (12) and the fourth partition plate (13), and the third reaction chamber (16) is connected with the fourth reaction chamber (17), the fifth reaction chamber (18) is connected with the sixth reaction chamber (19) through holes on the lower sides of the second partition plate (4) and the third partition plate (12); the sixth reaction chamber (19) is connected with the aerobic zone (11) through a through hole on the upper side of the first partition plate (5).

4. The small-sized micro-power water purifying device according to claim 2, wherein: the sludge backflow mechanism comprises a main backflow pipe (1), one end of the main backflow pipe (1) is placed at the bottom of the sedimentation area (20), and the other end of the main backflow pipe is placed at the upper part of the first reaction chamber (14); the main return pipe (1) is placed in one end pipe of the settling zone (20) and inserted into a main gas lifting pipe (36), and the other end of the main gas lifting pipe (36) is connected with a gas source.

5. The small-sized micro-power water purifying device according to claim 2, wherein: the sludge backflow mechanism comprises a main backflow pipe (1), one end of the main backflow pipe (1) is placed at the bottom of the sedimentation area (20), and the other end of the main backflow pipe is placed in the sixth reaction chamber (19); the secondary reflux mechanism comprises a secondary reflux pipe (23) arranged on a sixth reaction chamber (19), one end of the secondary reflux pipe (23) is placed at the bottom of the sixth reaction chamber (19), and the other end of the secondary reflux pipe is placed at the upper part of the first reaction chamber (14); the secondary return pipe (23) is arranged at one end of the six reaction chambers (19), the main return pipe (1) is arranged at one end of the sedimentation zone (20), a main gas stripping pipe (36) and a secondary gas stripping pipe (21) are respectively inserted into the main gas stripping pipe and the secondary gas stripping pipe, and the other ends of the main gas stripping pipe (36) and the secondary gas stripping pipe (21) are connected with an air source through an air inlet main pipe.

6. The miniature micro-dynamic water purification device according to any one of claims 4 or 5, wherein: the main return pipe (1) is positioned at the bottom of the settling zone (20) and communicated with a section of transverse pipe (22) extending transversely, the length of the transverse pipe (22) is smaller than the width of the box body (3), and a plurality of branch pipes (24) capable of adjusting the flow are arranged on the circumferential direction of the transverse pipe (22).

7. The miniature micro-dynamic water purification device according to any one of claims 1 to 5, wherein: the bottom of the aerobic zone (11) is provided with a detachable aeration device, the aeration device comprises a rigid grid (25), an aeration pipe (7) is detachably connected to the rigid grid (25), and an air inlet of the aeration pipe (7) is connected with an air source;

rigid graticule mesh (25) bilateral symmetry is provided with riser (26), riser (26) upper end is fixed and is set up spring button (27), but sliding connection lagging (28) is gone up in riser (26), evenly set up the several through-hole on lagging (28), the through-hole corresponds with spring button (27) position, lagging (28) upper end fixed connection couple (29), the direction of putting of hanging of couple (29) and rigid graticule mesh (25) opposite direction.

8. The miniature micro-power water purification device of claim 7, wherein: the aeration pipes (7) are arranged into three concentric circles, each concentric circle is connected with the air inlet main pipe through a valve, and the aeration pipes (7) are microporous nano aeration pipes.

9. The miniature micro-dynamic water purification device according to any one of claims 1 to 5, wherein: the bottom of box (3), be located the fixed second swash plate (8) that sets up in aerobic zone (11), the incline direction of second swash plate (8) is unanimous with the incline direction of first swash plate (9), the highly half that is less than first swash plate (9) of second swash plate (8), constitutes the slit between second swash plate (8) and first swash plate (9).

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