CN117125813B - Device and method for strengthening activated sludge in aerobic tank - Google Patents
Device and method for strengthening activated sludge in aerobic tank Download PDFInfo
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- CN117125813B CN117125813B CN202311306266.4A CN202311306266A CN117125813B CN 117125813 B CN117125813 B CN 117125813B CN 202311306266 A CN202311306266 A CN 202311306266A CN 117125813 B CN117125813 B CN 117125813B
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- 239000010802 sludge Substances 0.000 title claims abstract description 140
- 238000005728 strengthening Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 15
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 239000010865 sewage Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 80
- 239000011259 mixed solution Substances 0.000 claims description 60
- 239000000243 solution Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000006228 supernatant Substances 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 13
- 239000008399 tap water Substances 0.000 claims description 13
- 235000020679 tap water Nutrition 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000005273 aeration Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 230000001877 deodorizing effect Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000013543 active substance Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004891 communication Methods 0.000 abstract description 3
- 238000006386 neutralization reaction Methods 0.000 abstract description 3
- 244000005700 microbiome Species 0.000 description 8
- 239000012670 alkaline solution Substances 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000003929 acidic solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066057 cabin-1 Proteins 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012531 culture fluid Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention relates to the technical field of sewage treatment and provides an activated sludge strengthening device of an aerobic tank, which comprises a strengthening cabin and a plurality of culture tanks, wherein the strengthening cabin comprises a tank body and a culture pipe, the culture pipe comprises a collecting pipe, a plurality of distributing pipes, a piston, a plurality of sealing petals and an elastic piece, and the piston is arranged in the collecting pipe in a sealing way; the sealing valve is positioned between the piston and the plugging plate; the elastic piece is used for propping the piston, so that the piston is propped against the sealing valve to seal the distributing pipe. According to the invention, the sealing valve and the piston are arranged in the collecting pipe, so that the communication of each distributing pipe can be controlled, the residual solution in the collecting pipe can be recovered, the problems that neutralization occurs between two culture solutions and the residual culture solution in the collecting pipe is dripped into the strengthening cabin to influence the strengthening environment regulation effect of activated sludge are avoided, and the strengthening efficiency of the activated sludge is ensured.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an activated sludge strengthening device and method for an aerobic tank.
Background
Because the sewage source of the industrial park is uncontrollable, toxic and harmful substances are often contained in the sewage, impact is caused on a biochemical system (an aerobic tank) in the middle section of the sewage treatment system, a large number of microorganisms die, and in order to ensure the sewage treatment effect, the activated sludge in the aerobic tank is usually required to be reinforced, so that the microorganisms in the sewage are recovered.
The invention patent with the patent publication number of CN113562834A discloses a reflux sludge resuscitating and reducing system and a reflux sludge resuscitating and reducing method, which not only ensure the denitrification effect of the system, but also reduce the reflux quantity of sludge, avoid the situation that the existing technology adopts a large reflux ratio to do excessive idle work, and effectively reduce the extra operation cost caused by increasing the reflux quantity.
In the above technical solution, in order to intensify the sludge flowing back from the secondary sedimentation tank to the biochemical tank, a sludge resuscitating tank is provided, and since no toxic and harmful substances exist in the sludge, only an aeration and stirring mechanism is provided in the sludge resuscitating tank, and when the toxic and harmful substances which are unfavorable for the growth of microorganisms exist in the sewage in the sludge resuscitating tank, various nutrient solutions which promote the growth of microorganisms, an acidic solution and an alkaline solution which regulate the pH value, and the like are required to be added into the sludge resuscitating tank, especially for the addition of the acidic solution and the alkaline solution, if different input pipelines are used, the waste of resources is caused, and if the same pipeline is used, the problem that the residue of one solution in the pipeline is neutralized with the other solution is caused, so that the loss of the solution is caused, and meanwhile, the mixed solution in the sludge resuscitating tank is also influenced by the regulation effect of the residual solution in the pipeline to the sludge resuscitating tank, so that the intensification efficiency of the activated sludge is reduced.
Disclosure of Invention
In view of the above, the invention provides an activated sludge strengthening device and method for an aerobic tank, which can control the amount of culture solution added into a strengthening cabin and ensure the regulation effect of the culture solution on the activated sludge strengthening environment.
The technical scheme of the invention is realized as follows: in one aspect, the invention provides an activated sludge strengthening device of an aerobic tank, which comprises a strengthening cabin and a plurality of culture tanks, wherein,
the reinforcement pod comprises a tank and a culture tube comprising a manifold, a plurality of distribution tubes, a piston, a plurality of sealing flaps and an elastic member, wherein,
one end of the collecting pipe is fixedly arranged on the tank body and communicated with the inside of the tank body, and the other end of the collecting pipe is fixedly provided with a plugging plate;
one end of the distributing pipe is fixedly arranged on the peripheral side of the collecting pipe and communicated with the inside of the distributing pipe, and the other end of the distributing pipe is communicated with the culture tank through a conveying pipeline;
the piston is hermetically arranged in the collecting pipe and can slide along the axial direction of the piston;
the sealing valve is positioned between the piston and the plugging plate and can slide along the axial direction of the collecting pipe, and the sealing valve and the distributing pipe are in one-to-one correspondence with the culture tanks;
the elastic piece is used for propping the piston, so that the piston is propped against the sealing valve to seal the distributing pipe.
On the basis of the technical proposal, preferably, the piston comprises a piston head, a piston rod and a limiting plate, wherein,
the piston head is fixed in the collecting pipe in a sealing way and can slide along the axial direction of the piston head;
the piston rod is fixedly arranged on one side of the piston head, which is close to the sealing valve, and penetrates through the plugging plate and is in sliding connection with the plugging plate and the sealing valve;
the limiting plate is fixedly arranged at one end, far away from the piston head, of the piston rod;
the elastic piece is a compression spring and is sleeved on the piston rod, and two ends of the elastic piece are respectively propped against the plugging plate and the limiting plate.
Still more preferably, an operation rod is fixedly arranged on the sealing valve, and the operation rod penetrates through the plugging plate and is in sliding connection with the plugging plate.
Still more preferably, a storage groove is formed in one side, close to the piston rod, of the piston head;
the piston also comprises a suction pipe, the suction pipe is fixedly arranged in the piston rod and the limiting plate, one end of the suction pipe is positioned in the storage groove, and the other end of the suction pipe penetrates through the limiting plate.
On the basis of the technical proposal, preferably, the reinforcement cabin also comprises a heating mechanism, the heating mechanism comprises a water inlet pipe, a water outlet pipe, a bending pipe and a sealing box, wherein,
the water inlet pipe and the water outlet pipe penetrate through the tank body and are fixedly connected with the tank body, and the water inlet pipe and the water outlet pipe are symmetrically arranged about the central line of the tank body;
the bending pipe is positioned in the tank body, and two ends of the bending pipe are fixedly arranged on the water inlet pipe and the water outlet pipe respectively and are communicated with the water inlet pipe and the water outlet pipe;
the sealing box is fixedly arranged in the tank body, the water inlet pipe and the water outlet pipe penetrate through the sealing box, and a space is arranged between one side, away from the water inlet pipe, of the sealing box and the inner wall of the tank body.
Still more preferably, the top side of the sealing box is provided with a plurality of flow grooves, and the side wall in the flow groove is provided with a plurality of arc-shaped grooves;
the distance between the top side of the sealing box and the ground is gradually reduced along the direction from the water inlet pipe to the water outlet pipe.
Still further preferably, the heating means is provided in plural, and the plural heating means are alternately arranged with respect to a center line of the tank.
Still more preferably, the reinforcement pod further comprises a sludge inlet pipe and three sludge outlet pipes, wherein,
the sludge input pipe penetrates through the tank body and is fixedly connected with the tank body, one end of the sludge input pipe, which is positioned outside the tank body, is communicated with the on-site aerobic tank through a conveying pipeline, and a flat nozzle spray head is fixedly arranged at one end of the sludge input pipe, which is positioned inside the tank body;
one end of the sludge output pipe is fixedly arranged on the peripheral side of the tank body and communicated with the tank body, and the three sludge output pipes are arranged in a vertical arrangement mode.
In a second aspect, the invention provides a method for strengthening activated sludge in an aerobic tank, which is characterized by adopting an activated sludge strengthening device in the aerobic tank, comprising the following steps:
s1, the water inlet pipe and the water outlet pipe are communicated with hot water circulation equipment, so that the temperature in the tank body is kept at 25-35 ℃, and the interior of the tank body is communicated with deodorizing equipment;
s2, conveying the aerobic activated sludge and sewage in the on-site aerobic tank into the tank body through the sludge input pipe, forming a first mixed solution in the tank body by the aerobic activated sludge and the sewage, and standing the first mixed solution for a period of time;
s3, discharging partial supernatant fluid of the upper layer of the first mixed liquid by using the two sludge output pipes above, and then inputting tap water into the tank body, wherein the tap water is fused with the residual first mixed liquid in the tank body to form second mixed liquid;
s4, conveying the culture solution in the plurality of culture tanks into the tank body by utilizing a culture pipe and a conveying pipeline, so that the second mixed solution meets the growth environment required by the active organism;
s5, aerating the second mixed solution in the tank body by using an aeration device;
s6, standing the second mixed liquid, discharging partial supernatant liquid of the upper layer of the second mixed liquid by using two sludge output pipes above the second mixed liquid, and then inputting aerobic section water into the tank body, wherein the aerobic section water and the second mixed liquid remained in the tank body are fused to form third mixed liquid;
s7, aerating the third mixed solution in the tank body by using the aeration equipment;
s8, standing the third mixed liquid, discharging partial supernatant liquid of the upper layer of the third mixed liquid by using two sludge output pipes above the third mixed liquid, and then inputting aerobic section water into the tank body, wherein the aerobic section water and the third mixed liquid remained in the tank body are fused to form fourth mixed liquid;
and S9, aerating the fourth mixed solution in the tank body by using the aeration equipment, detecting the content of active substances in the fourth mixed solution, inputting the aerobic activated sludge in the fourth mixed solution into the on-site aerobic tank by using the sludge output pipe below if the detection result meets the standard, and repeating S8-S9 if the detection result meets the standard.
On the basis of the above technical scheme, preferably, when the aerobic activated sludge, tap water or water entering the aerobic section is input into the tank body and the supernatant or the aerobic activated sludge is discharged to the outside of the tank body, if the change value of the liquid level height of the mixed liquid in the tank body in unit time is smaller than a preset threshold value, the abnormal alarm of the pipeline is carried out.
Compared with the prior art, the device and the method for strengthening the activated sludge in the aerobic tank have the following beneficial effects:
(1) By arranging the sealing valve and the piston in the collecting pipe, the communication of each distributing pipe can be controlled, and the residual solution in the collecting pipe can be recovered, so that the problems that neutralization occurs between two culture solutions and the residual culture solution in the collecting pipe is dripped into the strengthening cabin to influence the strengthening environment regulation effect of activated sludge are avoided, and the strengthening efficiency of the activated sludge is ensured;
(2) The disc bent pipe is arranged in the sealing box, so that the disc bent pipe can be prevented from being corroded due to direct contact with sludge, and the service life of the reinforced cabin is prolonged;
(3) Through set up straw and holding vessel in the piston, can promote the recovery effect of residual culture solution in the manifold, through setting up the top side of seal box into the slope form, can promote the flow effect of mud, through setting up flow groove and arc recess on the seal box, not only can promote the heat transfer effect of mud and heating mechanism, can also influence the flow velocity of mud, prevent to produce piling up of mud in the flow groove.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a reinforcement cabin in an activated sludge reinforcement device for an aerobic tank according to the present invention;
FIG. 2 is a sectional view of a culture tube in an activated sludge reinforcing apparatus for an aerobic tank according to the present invention;
FIG. 3 is a perspective view showing the inside of a collecting pipe in the activated sludge reinforcing device for an aerobic tank according to the present invention;
FIG. 4 is a cross-sectional view of a piston in an activated sludge reinforcing apparatus for an aerobic tank according to the present invention;
FIG. 5 is a perspective view of a sealing flap in an activated sludge reinforcing device for an aerobic tank according to the present invention;
FIG. 6 is a sectional view of a reinforcement cabin in an activated sludge reinforcement device for an aerobic tank according to the present invention;
FIG. 7 is a perspective view of a heating mechanism in an activated sludge reinforcing apparatus for an aerobic tank according to the present invention;
FIG. 8 is a perspective view of the inside of a seal box in an activated sludge reinforcing apparatus for an aerobic tank according to the present invention;
FIG. 9 is an enlarged view of FIG. 7 at A;
FIG. 10 is a flow chart of an activated sludge strengthening method of an aerobic tank according to the invention.
Wherein: 1. a reinforcement cabin; 11. a tank body; 12. a culture tube; 121. a manifold; 1211. a plugging plate; 122. a dispensing tube; 123. a piston; 1231. a piston head; 1232. a piston rod; 1233. a limiting plate; 1234. a suction pipe; 124. sealing petals; 1241. an operation lever; 125. an elastic member; 13. a heating mechanism; 131. a water inlet pipe; 132. a water outlet pipe; 133. a coiled pipe; 134. a seal box; 14. a sludge input pipe; 141. a flat nozzle spray head; 15. a sludge output pipe; 101. a storage tank; 102. a flow channel; 103. an arc-shaped groove; 2. a culture tank; 3. and (5) an on-site aerobic tank.
Detailed Description
The following description of the embodiments of the present invention will be made in detail and with reference to specific embodiments of the present invention, but it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
As shown in FIGS. 1 to 10, the activated sludge reinforcing device for the aerobic tank of the invention comprises a reinforcing cabin 1 and a plurality of culture tanks 2.
The reinforcement cage 1 comprises a tank 11, a culture tube 12, a heating mechanism 13, a sludge input tube 14 and a sludge output tube 15.
The tank 11 is a container for reinforcing activated sludge.
The culture tube 12 is used for communicating the tank 11 and the culture tank 2, the culture tube 12 comprises a collecting tube 121, a plurality of distributing tubes 122, a piston 123, a plurality of sealing flaps 124 and an elastic piece 125, one end of the collecting tube 121 is fixedly arranged on the tank 11 and communicated with the interior of the collecting tube, and the other end is fixedly provided with a plugging plate 1211 to form a hood-shaped structure; one end of the distribution pipe 122 is fixedly arranged on the circumference side of the collection pipe 121 and communicated with the inside of the collection pipe, and the other end of the distribution pipe is communicated with the culture tank 2 through a conveying pipeline, so that the culture solution in the culture tank 2 can flow into the collection pipe 121 through the distribution pipe 122 and then flow into the tank 11, wherein the culture solution in the culture tank 2 comprises but is not limited to an acidic solution, an alkaline solution and various nutrient solutions suitable for the growth of microorganisms in activated sludge; the piston 123 is hermetically arranged in the collecting pipe 121 and can slide along the axial direction thereof; the sealing valve 124 is positioned between the piston 123 and the blocking plate 1211 and can slide along the axial direction of the collecting pipe 121, and the sealing valve 124 and the distributing pipe 122 are in one-to-one correspondence with the culture tank 2; the elastic member 125 is used for abutting against the piston 123 to enable the piston 123 to abut against the sealing flap 124 so as to seal the distribution pipe 122, as shown in fig. 2 and 3, when the left sealing flap 124 is pressed downwards, the rest sealing flaps 124 do not move, the left sealing flap 124 abuts against the piston 123 to move downwards so as to separate from the collecting pipe 121, the left distribution pipe 122 and the collecting pipe 121 are communicated with the tank 11, so that the culture solution in the left distribution pipe 122 flows into the tank 11, when various indexes of the mixed solution in the tank 11 are measured to meet the culture condition of the activated sludge, the pressure on the left Fang Mifeng flap 124 is canceled, the piston 123 is abutted against by the elastic member 125 so that the piston 123 and the left sealing flap 124 move upwards, the communication between the left distribution pipe 122 and the collecting pipe 121 and the tank 11 can be prevented, and the residual culture solution on the inner wall of the collecting pipe 121 can be scraped upwards so as to be recovered.
In order to facilitate the elastic member 125 to support the piston 123, the piston 123 is preferably configured to include a piston head 1231, a piston rod 1232, and a limiting plate 1233, wherein the piston head 1231 is sealingly fixed in the manifold 121 and is slidable along an axial direction thereof; the piston rod 1232 is fixedly arranged on one side of the piston head 1231, which is close to the sealing valve 124, and the piston rod 1232 penetrates through the blocking plate 1211 and is in sliding connection with the blocking plate 1211 and the sealing valve 124; the limiting plate 1233 is fixedly arranged at one end of the piston rod 1232, which is far away from the piston head 1231; the elastic member 125 is preferably configured as a compression spring, so that the elastic member 125 is sleeved on the piston rod 1232, and both ends of the elastic member 125 respectively abut against the blocking plate 1211 and the limiting plate 1233, as shown in fig. 2, when the piston head 1231 moves downward, the elastic member 125 is contracted, so that the elastic member 125 elastically abuts against the bottom of the limiting plate 1233, and applies an upward elastic force to the piston head 1231.
In order to facilitate control of the sealing flap 124, as shown in fig. 2 and 5, it is preferable that an operation rod 1241 is fixedly disposed on the sealing flap 124, and the operation rod 1241 penetrates the sealing plate 1211 and is slidably connected with the sealing plate 1211, so that the sealing flap 124 is moved by controlling an end of the operation rod 1241 located outside the collecting pipe 121.
In the process that the elastic member 125 abuts against the piston 123 and moves to the interior of the collecting tube 121, most of the residual culture solution on the inner wall of the collecting tube 121 can be recovered, however, a small amount of culture solution may be accumulated in a sealed cavity formed by enclosing the sealing flap 124, the piston 123, the collecting tube 121 and the blocking plate 1211, and in order to solve the problem, as shown in fig. 4, it is preferable that a storage tank 101 is opened at one side of the piston head 1231 close to the piston rod 1232; the suction pipe 1234 is arranged in the piston 123, the suction pipe 1234 is fixedly arranged in the piston rod 1232 and the limiting plate 1233, one end of the suction pipe 1234 is positioned in the storage tank 101, the other end of the suction pipe 1234 penetrates through the limiting plate 1233, after the suction pipe 1234 is far away from the piston head 1231 and is connected to the sucking device, a small amount of culture solution is not accumulated in a sealed cavity formed by enclosing the sealing valve 124, the piston 123, the collecting pipe 121 and the blocking plate 1211, but flows into the storage tank 101, and is sucked out by sucking devices with the suction pipe 1234 times, so that the culture solution and the rest culture solution are prevented from being neutralized.
Of course, a plurality of culture tubes 12 may be provided, and the same culture tube 12 may be used for the same or similar culture fluids, for example, the same culture tube 12 may be used for the acid or alkali solution for adjusting the pH value, and the same culture tube 12 may be used for several nutrient fluids for promoting the growth of microorganisms.
The heating mechanism 13 is used for making the sludge at an adaptive strengthening temperature, as shown in fig. 6-8, the heating mechanism 13 comprises a water inlet pipe 131, a water outlet pipe 132, a bending pipe 133 and a sealing box 134, wherein the water inlet pipe 131 and the water outlet pipe 132 penetrate through the tank 11 and are fixedly connected with the tank 11, and the water inlet pipe 131 and the water outlet pipe 132 are symmetrically arranged about the central line of the tank 11; the bending pipe 133 is positioned in the tank 11, and two ends of the bending pipe are fixedly arranged on the water inlet pipe 131 and the water outlet pipe 132 respectively and are communicated with the water inlet pipe and the water outlet pipe; the sealing box 134 is fixedly arranged in the tank 11, the water inlet pipe 131 and the water outlet pipe 132 penetrate through the sealing box 134, and a space is arranged between one side of the sealing box 134 away from the water inlet pipe 131 and the inner wall of the tank 11; the bent pipe 133 is made of a heat-conducting material, and the cost is relatively high, and since the water inlet pipe 131 and the water outlet pipe 132 penetrate through the tank 11 and the sealing box 134 and the two ends of the bent pipe 133 are communicated with the water inlet pipe 131 and the water outlet pipe 132, the bent pipe 133 is also positioned in the sealing box 134 and is not directly contacted with sludge, so that the bent pipe 133 is prevented from being corroded by the sludge, and the service life of the bent pipe 133 is prolonged; meanwhile, by arranging the interval between the side of the sealing box 134 far away from the water inlet pipe 131 and the inner wall of the tank 11, not only can the sludge firstly contact the top side of the sealing box 134, but also flow into the bottom of the sealing box 134 along the interval to increase the heat exchange area of the sealing box 134 and the sealing box, and the sludge can also firstly contact one end of the sealing box 134 with higher temperature and then flow to one end of the sealing box 134 with lower temperature, so that the heat exchange efficiency of the sludge is improved; in order to ensure the heat exchange efficiency of the sludge, a plurality of flow grooves 102 can be formed in the top side of the seal box 134, a plurality of arc-shaped grooves 103 are formed in the side wall in the flow groove 102, the distance between the top side of the seal box 134 and the ground is gradually reduced along the direction from the water inlet pipe 131 to the water outlet pipe 132, as shown in fig. 6 and 9, when the sludge enters the tank 11, the sludge is preferably dropped at one end, close to the water inlet pipe 131, of the top side of the seal box 134, and the sludge flows along the flow groove 102 due to the fact that the height, close to the water inlet pipe 131, of the top side of the seal box 134 is higher than that of one end, close to the water outlet pipe 132, so that the sludge flows into the lower portion of the seal box 134, in the flow process, the contact area between the sludge and the seal box 134 can be increased, the heat exchange effect is improved, the contact area between the sludge and the seal box 134 can be increased, the cross-sectional area of the sludge flowing through the flow groove 102 can be changed, the flow speed of the sludge is uneven, and the flow speed of the sludge is prevented from blocking the flow groove 102.
In order to improve the efficiency and uniformity of the temperature elevation of the sludge, as shown in fig. 6, it is preferable to provide a plurality of heating means 13, and the plurality of heating means 13 are alternately arranged with respect to the center line of the tank 11 so that the sludge flows in an S-shape between the plurality of heating means 13.
The sludge input pipe 14 is used for communicating the tank 11 and the on-site aerobic tank 3, the sludge input pipe 14 penetrates through the tank 11 and is fixedly connected with the tank 11, one end of the sludge input pipe 14 outside the tank 11 is communicated with the on-site aerobic tank 3 through a conveying pipeline, a flat nozzle spray head 141 is fixedly arranged at one end of the sludge input pipe 14 inside the tank 11, and as shown in fig. 6, the sludge can be uniformly scattered on the upper side of the sealing box 134 by utilizing the flat nozzle spray head 141.
The sludge output pipe 15 is used for outputting sludge or sewage to the outside of the tank 11, one end of the sludge output pipe 15 is fixedly arranged on the peripheral side of the tank 11 and communicated with the tank, three sludge output pipes 15 are arranged in a vertical arrangement mode, for the installation position of the sludge output pipe 15, the lowest sludge output pipe 15 is preferably arranged at the bottom of the tank 11 so as to pump out the sludge, and the other two sludge output pipes 15 are arranged at two heights of supernatant liquid required to be pumped out in the strengthening process.
The method for strengthening the activated sludge in the aerobic tank comprises the following steps:
s1, a water inlet pipe 131 and a water outlet pipe 132 are communicated with hot water circulation equipment, so that the temperature in a tank 11 is kept at 25-35 ℃ to adapt to the growth of microorganisms in activated sludge, the interior of the tank 11 is communicated with deodorizing equipment which is the prior art, the deodorizing equipment is communicated with the interior of the tank 11 through a pipeline, and then air in the tank 11 is pumped into the deodorizing equipment by a fan, so that peculiar smell in the tank 11 can be taken out;
s2, conveying the aerobic activated sludge and sewage in the on-site aerobic tank 3 into the tank 11 through a sludge input pipe 14, forming a first mixed solution in the tank 11 by the aerobic activated sludge and the sewage, standing the first mixed solution J (the standing time is specified according to the actual working condition), layering the first mixed solution after standing, wherein the bottom of the first mixed solution is sludge, and the upper part of the first mixed solution is supernatant, and when the aerobic activated sludge and the sewage are added, taking the liquid level height of the first mixed solution as a reference, for example, stopping inputting the aerobic activated sludge and the sewage after the liquid level height of the first mixed solution reaches Xm;
s3, discharging part of supernatant fluid of the upper layer of the first mixed solution by using two sludge output pipes 15 above, then inputting tap water into the tank 11, and fusing the tap water with the first mixed solution remained in the tank 11 to form a second mixed solution, wherein the discharge amount of the supernatant fluid and the addition amount of the tap water can be also based on the liquid level of the first mixed solution, for example, the discharge amount of the supernatant fluid and the addition amount of the tap water can be also set to be equal to (0.4-0.6) Xm;
s4, conveying the culture solution in the plurality of culture tanks 2 into the tank 11 by utilizing the culture tube 12 and the conveying pipeline, so that the second mixed solution meets the growth environment required by active organisms, wherein the pH value is between 6.5 and 8.5, the culture solution comprises but not limited to an acid solution and an alkaline solution for regulating the pH value of the second mixed solution and various nutrient solutions for promoting the growth of microorganisms, the same culture tube 12 can be used for the acid solution and the alkaline solution, the same culture tube 12 can be used for other various nutrient solutions, and the accurate addition of the culture solution is realized by controlling the sealing flaps 124 at corresponding positions, so that the problem of neutralization between the culture solutions and the problem of dripping the solution in the flow pipe 121 into the tank 11 are avoided;
s5, aerating the second mixed solution in the tank 11 by using aeration equipment (the aeration time is specified according to the actual working condition) to activate the sludge;
s6, standing the second mixed solution to enable the second mixed solution to be layered, discharging partial supernatant fluid of the upper layer of the second mixed solution by using two sludge output pipes 15 above the second mixed solution, then inputting aerobic section water into the tank 11, and fusing the aerobic section water with the second mixed solution remained in the tank 11 to form third mixed solution, wherein in the process, the aerobic section water is added into the third mixed solution instead of tap water, so that the activated sludge is adapted to the environment of an on-site aerobic tank 3, and the discharge amount of the supernatant fluid in the second mixed solution and the addition amount of tap water can be also based on the liquid level height of the first mixed solution;
s7, aerating the third mixed solution in the tank 11 by using an aeration device;
s8, standing the third mixed solution, discharging partial supernatant of the upper layer of the third mixed solution by using two sludge output pipes 15 above, and then inputting aerobic section water into the tank 11, wherein the aerobic section water and the third mixed solution remained in the tank 11 are fused to form fourth mixed solution;
and S9, aerating the fourth mixed solution in the tank 11 by using aeration equipment, detecting the content of active substances in the fourth mixed solution, if the detection result meets the standard, namely, the activated sludge meets the strengthening standard, inputting the aerobic activated sludge in the fourth mixed solution into the on-site aerobic tank 3 by using the sludge output pipe 15 below, and if the detection result meets the standard, repeating S8-S9 until the activated sludge is strengthened to meet the standard.
During operation, when the aerobic activated sludge, tap water or water in the aerobic section is input into the tank 11 and when the supernatant or the aerobic activated sludge is discharged to the outside of the tank 11, the volume of the mixed liquid in the tank 11 should be changed, if the change value of the liquid level of the mixed liquid in the tank 11 in unit time is smaller than a preset threshold value (for example, 0.1m per minute), the pipeline may be blocked, and an abnormal alarm of the pipeline is required to be carried out so as to maintain the pipeline in time.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. An activated sludge strengthening device of an aerobic tank is characterized in that: comprising a reinforcement pod (1) and a plurality of culture tanks (2), wherein,
the reinforcement cabin (1) comprises a tank body (11) and a culture tube (12), the culture tube (12) comprises a collecting tube (121), a plurality of distributing tubes (122), a piston (123), a plurality of sealing flaps (124) and an elastic piece (125), wherein,
one end of the collecting pipe (121) is fixedly arranged on the tank body (11) and communicated with the inside of the tank body, and the other end of the collecting pipe is fixedly provided with a plugging plate (1211);
one end of the distributing pipe (122) is fixedly arranged on the periphery of the collecting pipe (121) and communicated with the inside of the distributing pipe, and the other end of the distributing pipe is communicated with the culture tank (2) through a conveying pipeline;
the piston (123) is arranged in the collecting pipe (121) in a sealing way and can slide along the axial direction of the piston;
the sealing valve (124) is positioned between the piston (123) and the plugging plate (1211) and can slide along the axial direction of the collecting pipe (121), and the sealing valve (124) and the distributing pipe (122) are in one-to-one correspondence with the culture tank (2);
the piston (123) comprises a piston head (1231), a piston rod (1232) and a limiting plate (1233), wherein,
the piston head (1231) is fixed in the collecting pipe (121) in a sealing way and can slide along the axial direction;
the piston rod (1232) is fixedly arranged on one side of the piston head (1231) close to the sealing valve (124), and the piston rod (1232) penetrates through the blocking plate (1211) and is in sliding connection with the blocking plate (1211) and the sealing valve (124);
the limiting plate (1233) is fixedly arranged at one end, far away from the piston head (1231), of the piston rod (1232);
the elastic piece (125) is used for abutting the piston (123) to enable the piston (123) to abut the sealing valve (124) so as to seal the distributing pipe (122).
2. The activated sludge reinforcing device for an aerobic tank as claimed in claim 1, wherein: the elastic piece (125) is a compression spring, the elastic piece (125) is sleeved on the piston rod (1232), and two ends of the elastic piece are respectively propped against the blocking plate (1211) and the limiting plate (1233).
3. The activated sludge reinforcing device for an aerobic tank as claimed in claim 2, wherein: an operation rod (1241) is fixedly arranged on the sealing valve (124), and the operation rod (1241) penetrates through the blocking plate (1211) and is connected with the blocking plate in a sliding mode.
4. An activated sludge reinforcing apparatus for an aerobic tank as claimed in claim 3, wherein: a storage groove (101) is formed in one side, close to the piston rod (1232), of the piston head (1231);
the piston (123) further comprises a suction pipe (1234), the suction pipe (1234) is fixedly arranged in the piston rod (1232) and the limiting plate (1233), one end of the suction pipe (1234) is located in the storage groove (101), and the other end of the suction pipe penetrates through the limiting plate (1233).
5. An activated sludge reinforcing apparatus for an aerobic tank as claimed in any one of claims 1 to 4, wherein: the reinforcement cabin (1) also comprises a heating mechanism (13), the heating mechanism (13) comprises a water inlet pipe (131), a water outlet pipe (132), a bending pipe (133) and a sealing box (134), wherein,
the water inlet pipe (131) and the water outlet pipe (132) penetrate through the tank body (11) and are fixedly connected with the tank body, and the water inlet pipe (131) and the water outlet pipe (132) are symmetrically arranged about the central line of the tank body (11);
the bending pipe (133) is positioned in the tank body (11), and two ends of the bending pipe are fixedly arranged on the water inlet pipe (131) and the water outlet pipe (132) respectively and are communicated with the water inlet pipe and the water outlet pipe;
the sealing box (134) is fixedly arranged in the tank body (11), the water inlet pipe (131) and the water outlet pipe (132) penetrate through the sealing box (134), and an interval is arranged between one side, away from the water inlet pipe (131), of the sealing box (134) and the inner wall of the tank body (11).
6. The activated sludge reinforcing device for an aerobic tank according to claim 5, wherein: the top side of the sealing box (134) is provided with a plurality of flow grooves (102), and the side wall in the flow groove (102) is provided with a plurality of arc-shaped grooves (103);
the distance between the top side of the sealing box (134) and the ground is gradually reduced along the direction from the water inlet pipe (131) to the water outlet pipe (132).
7. The activated sludge reinforcing device for an aerobic tank as claimed in claim 6, wherein: the heating mechanisms (13) are provided in plurality, and the plurality of heating mechanisms (13) are alternately arranged with respect to the center line of the tank body (11).
8. The activated sludge reinforcing device for an aerobic tank as claimed in claim 7, wherein: the reinforcement cabin (1) also comprises a sludge input pipe (14) and three sludge output pipes (15), wherein,
the sludge input pipe (14) penetrates through the tank body (11) and is fixedly connected with the tank body, one end of the sludge input pipe (14) positioned outside the tank body (11) is communicated with the on-site aerobic tank (3) through a conveying pipeline, and a flat nozzle spray head (141) is fixedly arranged at one end of the sludge input pipe (14) positioned inside the tank body (11);
one end of the sludge output pipe (15) is fixedly arranged on the peripheral side of the tank body (11) and communicated with the tank body, and the three sludge output pipes (15) are arranged in a vertical arrangement mode.
9. An activated sludge strengthening method for an aerobic tank, which is characterized by adopting the activated sludge strengthening device for the aerobic tank according to claim 8 and comprising the following steps:
s1, the water inlet pipe (131) and the water outlet pipe (132) are communicated with hot water circulation equipment, so that the temperature in the tank body (11) is kept at 25-35 ℃, and the inside of the tank body (11) is communicated with deodorizing equipment;
s2, conveying the aerobic activated sludge and sewage in the on-site aerobic tank (3) into the tank body (11) through the sludge input pipe (14), forming a first mixed solution in the tank body (11) by the aerobic activated sludge and the sewage, and standing the first mixed solution for a period of time;
s3, discharging partial supernatant of the upper layer of the first mixed solution by using the two sludge output pipes (15) above, and then inputting tap water into the tank body (11), wherein the tap water is fused with the residual first mixed solution in the tank body (11) to form a second mixed solution;
s4, conveying the culture solution in the plurality of culture tanks (2) into the tank body (11) by using the culture tube (12) and the conveying pipeline, so that the second mixed solution meets the growth environment required by the active organism;
s5, aerating the second mixed liquid in the tank body (11) by using an aeration device;
s6, standing the second mixed solution, discharging partial supernatant liquid of the upper layer of the second mixed solution by using two sludge output pipes (15) above the second mixed solution, and then inputting aerobic section water into the tank body (11), wherein the aerobic section water and the second mixed solution remained in the tank body (11) are fused to form a third mixed solution;
s7, aerating the third mixed solution in the tank body (11) by using the aeration equipment;
s8, standing the third mixed solution, discharging partial supernatant fluid of the upper layer of the third mixed solution by using two sludge output pipes (15) above, and then inputting aerobic section water into the tank body (11), wherein the aerobic section water and the rest third mixed solution in the tank body (11) are fused to form fourth mixed solution;
s9, aerating the fourth mixed solution in the tank body (11) by using the aeration equipment, detecting the content of active substances in the fourth mixed solution, inputting the aerobic activated sludge in the fourth mixed solution into the on-site aerobic tank (3) by using the sludge output pipe (15) below if the detection result meets the standard, and repeating S8-S9 if the detection result meets the standard.
10. The method for strengthening activated sludge in an aerobic tank as claimed in claim 9, wherein: when the aerobic activated sludge, tap water or water entering the aerobic section is input into the tank body (11) and the supernatant or the aerobic activated sludge is discharged to the outside of the tank body (11), if the change value of the liquid level height of the mixed liquid in the tank body (11) in unit time is smaller than a preset threshold value, the abnormal alarm of the pipeline is carried out.
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