CN111977891B

CN111977891B - Process for sewage dephosphorization and degradation product recovery in MBR system

Info

Publication number: CN111977891B
Application number: CN202010722786.3A
Authority: CN
Inventors: 李海玲; 阚迎杰; 商京颖; 张有胜; 王峻玲; 张旭; 徐盛立; 徐千惠; 张光明
Original assignee: Beijing Shuiyan Environmental Technology Co ltd
Current assignee: Beijing Shuiyan Environmental Technology Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2022-07-15
Anticipated expiration: 2040-07-24
Also published as: CN111977891A

Abstract

The invention relates to the technical field of sewage treatment, in particular to a process for sewage dephosphorization and degradation product recovery in an MBR system, which comprises the following steps: firstly, primarily removing impurities from sewage, then placing phosphorus removing bacteria and releasing the phosphorus removing bacteria into a reaction tank, then expanding phosphorus removing equipment to enable the phosphorus removing bacteria to be attached to the sewage to completely remove phosphorus, and finally completely cleaning the precipitation degradation products at the bottom of the reaction tank after phosphorus removal. According to the invention, the large-volume floating objects are intercepted by the impurity removal equipment, the pressure of membrane component purification in the MBR system is reduced, the phosphorus removal capacity is improved, the phosphorus removal bacteria in the bacteria containing rods are uniformly blown to the attachment sheets in the reaction tank by the arranged aeration equipment, so that the sewage is comprehensively subjected to phosphorus removal, degradation and precipitation, the efficient and rapid treatment of the sewage in the reaction tank is facilitated, and the degraded precipitates are completely removed by the recovery equipment at the bottom of the reaction tank.

Description

Process for sewage dephosphorization and degradation product recovery in MBR system

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a process for sewage dephosphorization and degradation product recovery in an MBR system.

Background

The industrial phosphorus-containing wastewater and the phosphorus-containing fertilizer plant wastewater both contain a large amount of phosphorus, and in addition, the phosphorus-containing washing powder is commonly used in life, so that the domestic sewage often contains a large amount of phosphorus, and the sewage is discharged into river water to cause excessive propagation of algae, so that the water body is eutrophicated, and the water quality is deteriorated. The eutrophication of the water body not only can cause the excessive growth of algae in the water, but also can cause the rapid reduction of the oxygen content of the water body, thereby influencing the survival of aquatic organisms such as fishes. The existing MBR (membrane bioreactor) is also called as a membrane bioreactor and filters phosphorus-containing sewage through the aperture of the membrane of the MBR, the phosphorus-containing sewage is degraded through microorganisms, the filtering period is shortened due to the large filtering ratio, the maintenance and the cleaning are needed, the labor and the time are consumed, in addition, the sediment at the bottom of the membrane bioreactor is often sucked through a water suction pump, the sediment in the whole bottom surface is difficult to eradicate, and the incomplete cleaning is caused.

Disclosure of Invention

The invention aims to provide a process for sewage dephosphorization and degradation product recovery in an MBR system, so as to solve the problems in the background technology.

In order to achieve the above object, the present invention provides a process for removing phosphorus from wastewater and recovering degradation products thereof in an MBR system, comprising the steps of:

firstly, impurity removal of sewage:

s1, firstly, connecting a sewage pipe of a water suction pump outside the reaction tank with a pipe sleeve on the side surface of a water collection tank, and starting the water suction pump to pump sewage into the water collection tank;

s2, when the sewage slowly rises until the sewage overflows the filter frame and enters the reaction tank from the water outlet and the water inlet, the strip-shaped sundries in the sewage can be automatically wound on the filter strips, and then the filter frame is directly taken out to clean the strip-shaped sundries at intervals;

impurity removing equipment is installed at a corner of the top end of the reaction tank, a water inlet is formed at a corner of the top end of one side face of the reaction tank, the impurity removing equipment comprises a water collecting tank welded on the reaction tank, a water outlet is formed in the other side face of the top end of the water collecting tank, and a filter frame is arranged above the inside of the water collecting tank;

secondly, placing phosphorus removing bacteria:

s3, filling the annular sleeve for placing the bacteria rods with phosphorus removal bacteria, inserting the bacteria rods into the square holes of the suspension rods, and then placing the bacteria rods right in front of the aeration equipment;

s4, switching on a power supply of the aerator to aerate the sewage, and then conveying the sewage to the gas conveying pipe, the aeration main pipe and the aeration branch pipes and spraying the sewage from the gas outlet pipe heads to blow the phosphorus-removing bacteria in the annular sleeve into the reaction tank to be fully mixed with the sewage;

the device comprises a reaction tank, a plurality of bacteria placing rods, a plurality of aeration branch pipes, a plurality of bacteria placing rods and a plurality of bacteria collecting and distributing device, wherein the bacteria placing rods are arranged right in front of the aeration device, the aeration machine is arranged on the outer side surface of the reaction tank, the aeration main pipe is connected with the aeration machine, and the bacteria placing rods are provided with a plurality of annular sleeves for filling phosphorus removing bacteria;

thirdly, sewage dephosphorization stage:

s5, connecting a plurality of hanging columns into a string, inserting an attachment piece on each hanging column, and hanging the assembly whole on the hanging holes of the hanging strips until the hanging holes of all the hanging strips are fully hung on the assembly whole;

s6, switching on a forward rotation switch of the three-phase asynchronous motor to electrify the three-phase asynchronous motor to work, driving the screw rod to rotate forward, synchronously driving the sliding block far away from the three-phase asynchronous motor to approach to the other end of the screw rod, and further driving the connecting rods to draw each other to spread in a transmission manner to drive the attaching plates to be fully distributed in the reaction tank;

s7, when the attachment pieces need to be replaced, the reversing switch of the three-phase asynchronous motor is switched on, the screw rod is driven to rotate, the sliding blocks are synchronously driven to be folded, and then the attachment pieces are replaced in a centralized mode;

the phosphorus removal equipment is distributed in the whole reaction tank and comprises three-phase asynchronous motors symmetrically arranged at the top of the outer side of the reaction tank, output shafts of the three-phase asynchronous motors are coaxially connected with lead screws, a plurality of slide blocks are sleeved on the outer sides of the lead screws, the bottom of each slide block is connected with a connecting rod, the connecting rods of two adjacent slide blocks are rotationally connected through pins, a plurality of hanging strips moving along with the slide blocks are arranged between the two lead screws, and a plurality of rows of attachment pieces are arranged below the hanging strips;

fourthly, cleaning the sewage sediment degradation products:

s8, after phosphorus removal, degradation and precipitation, switching on a forward rotation switch of a forward and reverse rotation motor to enable the forward rotation switch to work, and further driving a rotating rod to rotate forward, so that a ring sleeve moves linearly along with the rotation of the rotating rod, and further driving a shovel plate to move to the front end of the reaction tank and shovel out precipitation and degradation products accumulated at the bottom of the reaction tank;

s9, when the shovel board pushes the sediment degradation product at the bottom of the reaction tank to the recovery cavity, the power supply of the stepping motor is switched on to make the shovel board work, the cam is driven to rotate 180 degrees, and the partition board is pressed down to the bottom surface of the reaction tank;

s10, driving the sealing plate to ascend by rotating the rotary rod to open the recovery cavity, and then drawing out the precipitated and degraded substances in the recovery cavity;

s11, after the interval time, switching on a reversing switch of the forward and reverse reversing switch to enable the forward and reverse reversing switch to work, further driving a rotating rod to reverse, driving a shovel plate to shovel the precipitated and degraded substances at the bottom of the reaction tank into a recovery cavity at the rear end of the reaction tank, continuing to operate according to S9 and S10, firstly closing a partition plate at the rear end of the reaction tank, then opening a sealing plate at the rear end of the reaction tank, and finally scooping out the precipitated and degraded substances in the recovery cavity;

recovery plant is located the interior bottom of reaction tank, it is including being located the gliding shovel board of reaction tank bottom, the one end welding of shovel board has the connecting rod that is the rhombus structure, the outer end welding of connecting rod has the ring cover, two outsides of reaction tank bottom are fixed with the seal frame, positive reverse motor is installed to the one end of seal frame, the output shaft coaxial coupling of positive reverse motor has the dwang, dwang and ring cover threaded connection, both ends bottom all is provided with the recovery platform around the reaction tank, the recovery chamber that communicates with the reaction tank is inside seted up to the inside of recovery platform, the vertical grafting of outer port of recovery platform has the shrouding that can reciprocate, the inboard partition panel that can reciprocate that just is located the interior end department of recovery platform of front and back end of reaction tank.

As the further improvement of this technical scheme, it is a plurality of the ring cover is corresponding with the position of a plurality of air outlet pipe heads, and the top of putting the fungus pole is equipped with the gag lever post that is T type structure, and one side of aeration house steward is provided with the suspension pole, and the top surface of suspension pole just has seted up a plurality of square holes with putting fungus pole same position department, puts fungus pole and pegs graft with the square hole, and both ends one side of suspension pole is equipped with the fixture block with the joint of aeration house steward.

As a further improvement of the technical scheme, one side of the slider is attached to the inner side of the reaction tank, a threaded hole in threaded connection with the lead screw is formed in the side of the slider far away from the three-phase asynchronous motor, a protruding column is arranged on the bottom surface of the slider, a connecting rod is sleeved on the protruding column, a plurality of hanging holes are formed in the side of the hanging strip in a linear equidistant mode, a through hole in plug-in connection with the lead screw is formed in one side of the slider not farthest away from the three-phase asynchronous motor, a clamping groove is formed in one end, facing the middle of the reaction tank, of the slider, flat grooves are symmetrically formed in two inner sides of the clamping groove, two ends of the hanging strip are in clamping fit with the clamping groove, positioning grooves are formed in the side faces of two ends of the hanging strip, and bolts are inserted into the flat grooves and the positions of the positioning grooves correspond to each other.

As a further improvement of the technical scheme, the inner side of the middle part of the reaction tank is embedded with the lead screw at the same horizontal position to form a guide rod, the middle part of the top surface of the suspension rod is provided with a guide block which is inserted into the guide rod and can slide, the side surface of the middle part of the hanging strip is provided with a guide groove which runs through the bottom surface of the hanging strip, and the guide groove is connected with the guide rod in a clamping manner and can slide.

As a further improvement of this technical scheme, the vertical one end of adhesion sheet is equipped with the cylinder strip, the vertical one end of a plurality of adhesion sheets is connected with the peg, the top of peg just runs through the lateral surface and sets up the cylinder groove of pegging graft with the cylinder strip, the top center of peg is equipped with the screw thread post, the top threaded connection of screw thread post has the couple, the couple articulates the cooperation with the hanging hole, the peg that is located the below passes through the screw thread post and cooperates with the peg bottom shrinkage pool threaded connection that is located the top, the adhesion sheet adopts the nylon material to make integrated into one piece structure, the cylinder groove does not run through the peg, the bottom shrinkage pool inboard of peg and couple all is equipped with the screw thread, the top of peg has cup jointed spacing cap.

As this technical scheme's further improvement, the shovel board is cuboid structure and the symmetry of two long sides side has seted up the cavity, the inside equidistant of cavity is equipped with a plurality of baffles, reaction tank opposite side bottom seted up with connecting rod sliding connection dodge the groove, the inside of dodging the groove bonds and has sealed cushion, sealed frame cover is located the outside of dodging the groove, the outer end top surface department of recovery platform sets up the bar groove that is linked together with the recovery chamber, the shrouding is pegged graft with the bar groove, the top surface middle part of recovery platform and the both sides welding that is located the bar groove have the support frame, the round hole of taking the internal screw thread is seted up at the top surface middle part of support frame, the top surface middle part welding of shrouding has the bearing, the top of bearing is closely pegged graft there is the swing arm, the lateral surface of swing arm is equipped with the screw thread and with the round hole threaded connection of support frame.

As a further improvement of the technical scheme, a plurality of guide pillars are welded on the top surface of the partition plate at equal intervals, a spring is sleeved on the top of each guide pillar, a plurality of limiting rings are welded on the inner sides of the front end and the rear end of the reaction tank and at the height position of the partition plate away from the bottom surface of the reaction tank, the guide pillars are spliced with the limiting rings, and the bottom ends of the springs are located on the top surfaces of the limiting rings.

As the further improvement of this technical scheme, the laminating of the top surface middle part of partition panel has the cam, and step motor is installed to the front and back end lateral surface of reaction tank, and step motor's output shaft runs through to the inside of reaction tank and closely pegs graft the cooperation with the top center of cam, and the stroke of cam is equal with the height of partition panel, and the flexible volume of spring is greater than the height of partition panel.

As the further improvement of this technical scheme, the bottom of header tank is trapezoidal platform structure and bottom opening, socket has been seted up to the bottom side level of header tank, the inside of socket is pegged graft and is had the picture peg, the bottom of outlet flushes with the bottom of water inlet, the welding of two inboard symmetries of header tank has the fixed strip that is rectangular shape, filter the frame and place in the top of fixed strip, filter the inside equidistant welding of frame and have a plurality of filtration strips, the water inlet is square structure and the slot has been seted up from top to bottom, the water inlet runs through the lateral surface of reaction tank, the inside grafting of slot has the regulating block, the connecting hole has been seted up to the one end top department of regulating block, servo motor is installed to the lateral surface of reaction tank, servo motor's output shaft coaxial coupling has threaded rod and connecting hole threaded connection.

As a further improvement of the technical scheme, a plurality of air outlet pipe heads are arranged on one side of the interior of the aeration branch pipe facing the reaction tank, the air supply pipe is installed at the output end of the aeration machine, the air supply pipe penetrates through the interior of the reaction tank, the air inlet which is tightly spliced with the air supply pipe is formed in the side face of the middle of the aeration main pipe, the inner side of the reaction tank is close to one side of the air supply pipe, a plurality of fixed blocks are welded at equal intervals, the top surface center of each fixed block is provided with a jack, and the bottom of the aeration main pipe is provided with an inserting column which is spliced with the jack.

Compared with the prior art, the invention has the following beneficial effects:

1. in the process for sewage dephosphorization and degradation recovery in the MBR system, the large-volume floaters are intercepted by the impurity removing equipment arranged at the water inlet, the pressure of membrane component purification in the MBR system is reduced, and the too fast consumption of microorganisms in the reaction tank is reduced, so that the dephosphorization capability is improved.

2. In the process for sewage dephosphorization and degradation product recovery in the MBR system, through the arranged aeration equipment and the bacteria placing rods right in front of the aeration equipment, the dephosphorization bacteria in the bacteria placing rods are uniformly blown to the reaction tank, and through the degradation function of the microorganism, the sewage is dephosphorized to ensure that the sewage is degraded and precipitated, so that the sewage can be efficiently and quickly treated in the reaction tank.

3. In the process for sewage dephosphorization and degradation product recovery in the MBR system, the attachment pieces are fully placed in the space of the reaction tank, so that the phosphorus removing bacteria can be attached and dispersed, and then the phosphorus in the sewage in the reaction tank is degraded synchronously, and meanwhile, the attachment pieces can be integrally unfolded and folded, so that the rapid centralized replacement is facilitated.

4. In the process for removing phosphorus from sewage and recovering degradation products of the sewage in the MBR system, all the precipitation degraded by phosphorus removing bacteria is removed through the reciprocating type recovery equipment arranged at the bottom of the reaction tank, so that no residue of the precipitation is ensured in the reaction tank.

Drawings

FIG. 1 is one of the overall structural views of embodiment 1;

FIG. 2 is a schematic view showing a partial structure of a reaction cell in example 1;

FIG. 3 is an exploded assembly view of the trash removing apparatus according to embodiment 1;

FIG. 4 is a second schematic view of the overall structure of the embodiment 1;

FIG. 5 is a partial sectional view of a reaction cell of example 1;

FIG. 6 is a schematic view of the assembled structure of the aeration main pipe and the aeration branch pipe in example 1;

FIG. 7 is a schematic view of the structure of a suspension bar of embodiment 1;

FIG. 8 is a schematic view of the structure of a mushroom stem of example 1;

FIG. 9 is a schematic view of the phosphorus removal apparatus of example 1 in an expanded state;

FIG. 10 is a schematic view of a phosphorus removal apparatus of example 1 in a furled state;

FIG. 11 is a schematic view showing a plurality of slider assembling structures according to embodiment 1;

FIG. 12 is a schematic view showing an assembly structure of a plurality of attachment plates according to embodiment 1;

FIG. 13 is a schematic view of the structure of the hanging strip of embodiment 1;

FIG. 14 is a schematic view of the structure of the adhesion sheet of example 1;

FIG. 15 is an exploded assembly view of the suspension post according to embodiment 1;

FIG. 16 is a third schematic view showing the overall structure of the embodiment 1;

FIG. 17 is a view showing a construction of an assembling position of the recovering apparatus in embodiment 1;

fig. 18 is a schematic view of the structure of a blade according to embodiment 1;

FIG. 19 is a schematic view showing an internal structure of a sealing frame in accordance with embodiment 1;

FIG. 20 is a schematic structural view of the closure plate of example 1;

fig. 21 is a schematic view of an assembling structure of a partition plate and a cam of embodiment 1.

The various reference numbers in the figures mean:

100. a reaction tank; 101. a water inlet; 102. a slot; 103. an adjusting block; 104. connecting holes; 105. a servo motor; 106. a fixed block; 1060. a jack; 107. a guide bar;

110. impurity removal equipment; 111. a water collection tank; 1110. a water outlet; 1111. a socket; 112. inserting plates; 113. a fixing strip; 114. a filter frame; 1140. a filter strip; 115. pipe sleeve;

120. an aeration device; 121. an aerator; 1210. a gas delivery pipe; 122. an aeration main pipe; 1220. an air inlet; 123. inserting a column; 124. carrying out aeration pipe division; 1240. an air outlet pipe head;

130. placing a bacteria stalk; 1300. a circular ring sleeve; 1301. a limiting rod; 131. removing phosphorus bacteria; 132. a suspension rod; 1320. a square hole; 1321. a clamping block; 1322. a guide block;

140. a recovery stage; 141. a recovery chamber; 142. a strip-shaped groove; 143. closing the plate; 144. a bearing; 145. rotating the rod; 146. a support frame;

150. a partition panel; 151. a guide post; 152. a spring; 153. a cam; 154. a stepping motor; 155. a limiting ring;

160. an avoidance groove; 161. sealing the rubber gasket;

200. a phosphorus removal device;

210. a three-phase asynchronous motor; 211. a screw rod; 212. a slider; 2120. a threaded hole; 2121. a through hole; 2122. a card slot; 2123. a convex column; 2124. a connecting rod; 2125. a flat groove;

220. hanging strips; 2201. hanging holes; 2202. a guide groove; 2203. positioning a groove;

230. an attachment sheet; 2300. a cylindrical bar; 231. hanging a column; 2310. a cylindrical groove; 2311. a threaded post; 2312. hooking; 2313. a limiting cap;

300. a recovery device;

310. a shovel plate; 311. a concave cavity; 312. a partition plate; 313. a connecting rod; 314. sleeving a ring;

320. a forward and reverse rotation motor; 321. rotating the rod; 322. and (7) sealing the frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central axis", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1

Referring to fig. 1 to 21, the present invention provides a process for phosphorus removal from wastewater and recovery of degradation products thereof in an MBR system, comprising the steps of:

firstly, impurity removal of sewage:

s1, firstly, connecting a sewage pipe of a water suction pump outside the reaction tank 100 with a pipe sleeve 115 on the side surface of the water collection tank 111, starting the water suction pump, and further pumping sewage into the water collection tank 111;

s2, when the sewage slowly rises until the sewage overflows the filter frame 114 and enters the reaction tank 100 from the water outlet 1110 and the water inlet 101, the strip-shaped impurities in the sewage are automatically wound on the filter strips 1140, and then the filter frame 114 is directly taken out at intervals to clean the strip-shaped impurities;

impurity removing equipment 110 is installed at a corner of the top end of the reaction tank 100, a water inlet 101 is formed at a corner of the top end of one side face of the reaction tank 100, the impurity removing equipment 110 comprises a water collecting tank 111 welded on the reaction tank 100, a water outlet 1110 is formed in the other side face of the top end of the water collecting tank 111, and a filter frame 114 is arranged above the inside of the water collecting tank 111;

secondly, placing phosphorus removing bacteria:

s3, filling the phosphorus removing bacteria 131 into the circular sleeve 1300 of the bacteria placing rod 130, inserting the bacteria placing rod 130 into the square hole 1320 of the suspension rod 132, and further placing the bacteria placing rod in front of the aeration equipment 120;

s4, switching on the power supply of the aerator 121 to aerate the sewage, and then conveying the sewage into the gas conveying pipe 1210, the main aeration pipe 122 and the aeration branch pipes 124, and spraying the sewage out of the gas outlet pipe heads 1240 to blow the phosphorus removing bacteria 131 in the circular sleeve 1300 into the reaction tank 100 to be fully mixed with the sewage;

the bacteria placing rods 130 are arranged right in front of the aeration equipment 120, the aeration equipment 120 comprises an aerator 121 arranged on the outer side surface of the reaction tank 100, an aeration main pipe 122 connected with the aerator 121 and a plurality of aeration branch pipes 124, the bacteria placing rods 130 are arranged right in front of each aeration branch pipe 124, and a plurality of annular sleeves 1300 used for filling phosphorus removing bacteria 131 are arranged on the bacteria placing rods 130;

thirdly, sewage dephosphorization stage:

s5, connecting a plurality of hanging posts 231 into a string, inserting an attaching sheet 230 on each hanging post 231, and hanging the assembly whole on the hanging holes 2201 of the hanging bars 220 until the assembly whole is hung in the hanging holes 2201 of all the hanging bars 220;

s6, turning on the forward switch of the three-phase asynchronous motor 210 to make it work, so as to drive the lead screw 211 to rotate forward, and synchronously drive the slide block 212 far from the three-phase asynchronous motor 210 to approach the other end of the lead screw 211, and further drive the connecting rods 2124 to draw each other to spread in a transmission manner, so as to drive the attaching plates 230 to be fully distributed in the reaction tank 100;

s7, when the attachment sheet 230 needs to be replaced, the reverse switch of the three-phase asynchronous motor 210 is switched on, the screw rod 211 is driven to rotate, the sliding blocks 212 are synchronously driven to be folded, and then the attachment sheet 230 is replaced in a centralized manner;

the phosphorus removal equipment 200 is distributed in the whole reaction tank 100 and comprises three-phase asynchronous motors 210 symmetrically arranged at the top of the outer side of the reaction tank 100, output shafts of the three-phase asynchronous motors 210 are coaxially connected with screw rods 211, a plurality of sliding blocks 212 are sleeved on the outer side of the screw rods 211, the bottom of each sliding block 212 is connected with a connecting rod 2124, the connecting rods 2124 of two adjacent sliding blocks 212 are rotatably connected through pins, a plurality of hanging strips 220 moving along with the sliding blocks 212 are arranged between the two screw rods 211, and a plurality of rows of attachment pieces 230 are arranged below the hanging strips 220;

fourthly, cleaning the sewage precipitation degradation products:

s8, after the phosphorus removal, degradation and precipitation are carried out, a forward rotation switch of the forward and reverse rotation motor 320 is switched on to work, and then the rotating rod 321 is driven to rotate forward, so that the ring sleeve 314 moves linearly along with the rotation of the rotating rod 321, and the shovel plate 310 is driven to move towards the front end of the reaction tank 100 and shovel off the precipitation and degradation products accumulated at the bottom of the reaction tank;

s9, when the shovel plate 310 pushes the precipitation degradation product at the bottom of the reaction tank 100 into the recovery cavity 141, the power supply of the stepping motor 154 is switched on to work, the cam 153 is driven to rotate 180 degrees, and the partition plate 150 is pressed to the bottom surface of the reaction tank 100;

s10, the closing plate 143 is driven to ascend through the rotating rod 145, the recovery cavity 141 is opened, and then the precipitated and degraded substances in the recovery cavity 141 are drawn out;

s11, after the interval time, switching on a reverse switch of the forward and reverse switch 320 to enable the reverse switch to work, further driving the rotating rod 321 to reverse, driving the shovel plate 310 to shovel the precipitated and degraded substances at the bottom of the reaction tank 100 to the recovery cavity 141 at the rear end of the reaction tank, continuing to operate according to S9 and S10, firstly closing the partition plate 150 at the rear end of the partition plate, then opening the sealing plate 143 at the rear end of the partition plate, and finally scooping out the precipitated and degraded substances in the recovery cavity 141;

the recycling equipment 300 is located at the inner bottom of the reaction tank 100, and comprises a shovel plate 310 which is located at the bottom of the reaction tank 100 and slides, a connecting rod 313 in a diamond structure is welded at one end of the shovel plate 310, a ring sleeve 314 is welded at the outer end of the connecting rod 313, a sealing frame 322 is fixed at two outer sides of the bottom of the reaction tank 100, a forward and reverse motor 320 is installed at one end of the sealing frame 322, an output shaft of the forward and reverse motor 320 is coaxially connected with a rotating rod 321, the rotating rod 321 is in threaded connection with the ring sleeve 314, recycling tables 140 are arranged at the bottoms of the front and rear ends of the reaction tank 100, a recycling cavity 141 communicated with the inside of the reaction tank 100 is formed in the recycling tables 140, a sealing plate 143 capable of moving up and down is vertically inserted into an outer port of the recycling tables 140, and partition plates 150 capable of moving up and down are arranged at the inner sides of the front and rear ends of the reaction tank 100 and at the inner ends of the recycling tables 140.

The invention provides a reaction tank which is applied to an MBR system and can efficiently remove phosphorus and recover degradation products, please refer to fig. 1 to 3, the reaction tank comprises a reaction tank 100 in a square box structure, and impurity removing equipment 110 is installed at a corner of the top end of the reaction tank 100 and is used for firstly treating large-volume strip-shaped impurities in sewage, so that efficient phosphorus removal in the reaction tank is facilitated. The inside of the reaction tank 100 is provided with a dephosphorization apparatus 200 and a recovery apparatus 300 under the dephosphorization apparatus 200. A water inlet 101 is formed in a corner of the top end of one side face of the reaction tank 100, and the impurity removing equipment 110 comprises a water collecting tank 111 welded on the reaction tank 100 and used for collecting sewage flowing into the reaction tank 100 firstly. The bottom of water collection tank 111 is trapezoidal platform structure and bottom opening, and socket 1111 has been seted up to water collection tank 111's bottom side level, and the inside grafting of socket 1111 has picture peg 112, pulls out picture peg 112 alright with the precipitate release in the water collection tank 111. A water outlet 1110 is formed in the other side surface of the top end of the water collecting tank 111, and the bottom of the water outlet 1110 is flush with the bottom of the water inlet 101, so that the sewage accumulated in the water collecting tank 111 can smoothly flow into the reaction tank 100. The two inner sides of the water collecting tank 111 are symmetrically welded with strip-shaped fixing strips 113, and a filter frame 114 is arranged above the fixing strips 113, so that the filter frame 114 can be conveniently disassembled and assembled, and sundries on the filter frame can be conveniently removed. The filter frame 114 has a plurality of filter strips 1140 welded therein at equal intervals for blocking large-volume long-strip impurities, so that the impurities are automatically wound on the filter strips 1140 when sewage in the water collection tank 111 overflows into the reaction tank 100. A pipe sleeve 115 is welded on one side of the water collecting tank 111, which is away from the water outlet 1110, and is located below the filtering frame 114, and the pipe sleeve 115 is communicated with the inside of the water collecting tank 111 and is used for sleeving a sewage pipe, so that sewage can be pumped into the water collecting tank 111 to be primarily purified.

Furthermore, the water inlet 101 is of a square structure, the upper surface and the lower surface of the water inlet 101 are provided with slots 102, the water inlet 101 penetrates through the outer side surface which is perpendicular to and adjacent to the reaction tank 100, and the adjusting blocks 103 are inserted into the slots 102 and used for sealing the water inlet 101 to achieve adjustment of inflow. The top of one end of the adjusting block 103 is provided with a connecting hole 104, the inner side of the connecting hole 104 is provided with a thread, the outer side surface of the reaction tank 100 is provided with a servo motor 105, an output shaft of the servo motor 105 is coaxially connected with a threaded rod, the threaded rod is in threaded connection with the connecting hole 104, the servo motor 105 is the conventional technology, details are omitted in the invention, and an encoder is used in cooperation with the servo motor 105 for receiving and transmitting a forward and reverse rotation working instruction to drive the threaded rod connected with the output shaft to rotate forward and reverse, so that the adjusting block 103 is driven to reciprocate in the water inlet 101 to move linearly, the size of the water inlet 101 is changed, and the purpose of controlling the flow of sewage is achieved.

As shown in FIGS. 4 to 8, an aeration device 120 and a plurality of bacteria-placing rods 130 installed right in front of the aeration device 120 are installed inside the reaction tank 100 and near the impurity removing device 110. The aeration device 120 includes an aerator 121 installed on the outer side of the reaction tank 100, which is a conventional technology and is not described in detail in the present invention, and is used for blowing air into the reaction tank 100 to sufficiently mix the sewage with microorganisms, thereby facilitating the sewage to be completely purified through microbial degradation. The internally mounted of reaction tank 100 has the aeration house steward 122 of being connected with aeration machine 121, and aeration house steward 122 is the level and places and the bottom is vertical equidistant closely peg graft and has a plurality of aeration branch pipes 124, and aeration branch pipe 124 is equipped with a plurality of outlet pipe heads 1240 towards inside one side of reaction tank 100, divides pipe 124 and outlet pipe head 1240 to lead gas to each place in the reaction tank 100 through the aeration, and then makes sewage and microorganism intensive mixing. The right front of each aeration branch pipe 124 is provided with a bacteria holding rod 130, the bacteria holding rod 130 is provided with a plurality of circular ring sleeves 1300 corresponding to the positions of a plurality of air outlet pipe heads 1240 on the side surface of the aeration branch pipe 124, the inside of the circular ring sleeves 1300 is filled with phosphorus removing bacteria 131, the phosphorus removing bacteria 131 are bacteria, and can suck phosphorus in sewage into the sewage in an excessive manner in an aerobic state, so that the phosphorus content in the sewage exceeds the phosphorus content in general bacteria by a plurality of times, and the sewage is degraded by precipitation. Because the circular sleeve 1300 is positioned right in front of the air outlet pipe 1240, when the aerator 121 is powered on to work, the gas is dispersed into the reaction tank 100 through the aeration main pipe 122 and the aeration branch pipe 124, and then the phosphorus removing bacteria 131 are dispersed into the reaction tank 100 and fully mixed with the sewage, so that the comprehensive and efficient phosphorus removing effect is achieved.

In this embodiment, the main aeration pipe 122 and the branch aeration pipe 124 are both made of PP material and have a hollow tubular shape, and the bacteria-containing rod 130 is also made of PP material and has an integrally formed structure, which is corrosion-resistant, hard in strength and durable.

Further, an air pipe 1210 is installed at the output end of the aerator 121, the air pipe 1210 penetrates through the reaction tank 100, and an air inlet 1220 tightly inserted into the air pipe 1210 is formed in the side surface of the middle of the aeration main pipe 122, so that the gas exposed by the aerator 121 is transmitted into the aeration main pipe 122. The inner side of the reaction tank 100 and one side close to the gas conveying pipe 1210 are welded with a plurality of fixing blocks 106 at equal intervals, the center of the top surface of each fixing block 106 is provided with a jack 1060, the bottom of the aeration main pipe 122 is provided with an inserting column 123 inserted into the jack 1060, and the structure is convenient for the disassembly, assembly and stabilization of the aeration main pipe 122.

In order to add the phosphorus removing bacteria 131 to the bacteria placing rod 130, the top end of the bacteria placing rod 130 is provided with a limiting rod 1301 in a T-shaped structure, one side of the aeration main pipe 122 is provided with a suspension rod 132, the top surface of the suspension rod 132 and the same position as the bacteria placing rod 130 are provided with a plurality of square holes 1320, the bacteria placing rod 130 is spliced with the square holes 1320, the top size of the limiting rod 1301 is larger than the size of the square holes 1320, a limiting structure is formed, the bacteria placing rod 130 is hung on the suspension rod 132, and the phosphorus removing bacteria 131 can be conveniently taken out and added at any time. The suspending rod 132 is provided with a clamping block 1321 clamped with the aeration main pipe 122 on one side of both ends thereof, and a guide block 1322 inserted and slidable with the guide rod 107 is provided in the middle of the top surface of the suspending rod 132, so that the suspending rod 132 is fixed on the upper side of the reaction tank 100 to suspend the bacteria-placing rod 130.

As shown in fig. 9 to 15, the phosphorus removal apparatus 200 includes a three-phase asynchronous motor 210 symmetrically installed at the top of the outside of the reaction tank 100, and the three-phase asynchronous motor 210 is disposed opposite to the aerator 121. The output shaft of the three-phase asynchronous motor 210 is coaxially connected with a screw rod 211, the screw rod 211 is embedded in the reaction tank 100 and can rotate, a forward and reverse rotation switch is arranged on one side of the three-phase asynchronous motor 210 in a matched mode, the forward and reverse rotation switch and the three-phase asynchronous motor 210 are connected through a conducting wire to form a forward and reverse rotation control circuit, the forward and reverse rotation switch and the three-phase asynchronous motor 210 are conventional technologies in the prior art, and details are not repeated in the invention. The principle of the forward and reverse rotation of the three-phase asynchronous motor 210 is to change any two phases in the phase sequence of the power supply, usually the V phase is unchanged, and the U phase is changed with the W phase. The guide rod 107 is embedded in the middle inner side of the reaction tank 100 and at the same horizontal position with the screw rod 211, the plurality of sliding blocks 212 are sleeved on the outer side of the screw rod 211, one side of each sliding block 212 is attached to the inner side of the reaction tank 100, and therefore the sliding blocks 212 are guaranteed to be limited by the inner side of the reaction tank 100 and do not rotate, and can only slide on the screw rod 211 along the central axial direction of the screw rod. The side of the sliding block 212 far away from the three-phase asynchronous motor 210 is provided with a threaded hole 2120 in threaded connection with the screw 211, and when the screw 211 rotates, the sliding block 212 can be driven to move. The bottom of the slider 212 is provided with a convex column 2123, the convex column 2123 is sleeved with a connecting rod 2124, the outer side of the bottom end of the convex column 2123 is provided with a thread, and the thread is connected with a nut, so that the connecting rod 2124 is ensured not to slip. The connecting rods 2124 of the two adjacent sliding blocks 212 are connected in a rotating mode through pins, each sliding block 212 is connected into a whole through the connecting rod 2124, when the sliding block 212 far away from the three-phase asynchronous motor 210 is driven by the screw rod 211 to move, the connecting rods 2124 are spread in a transmission mode, finally, after the sliding block 212 far away from the three-phase asynchronous motor 210 moves to the other end of the screw rod 211, the rest sliding blocks 212 are driven to be evenly spread, and when the screw rod 211 rotates, the sliding blocks 212 are driven to be folded. A plurality of hanging strips 220 moving along with the sliding blocks 212 are arranged between the two screw rods 211, a plurality of hanging holes 2201 are formed in the side surfaces of the hanging strips 220 at equal intervals in a straight line mode, a plurality of rows of attachment pieces 230 are arranged below the hanging strips 220, attachment is favorably provided for phosphorus removing bacteria 131, and each attachment piece 230 can remove phosphorus from sewage in the surrounding area. The vertical one end of adhesion sheet 230 is equipped with cylinder strip 2300, and the vertical one end of a plurality of adhesion sheets 230 is connected with hangs post 231, hangs the top of post 231 and runs through the lateral surface and sets up the cylinder groove 2310 with cylinder strip 2300 grafting for adhesion sheet 230 dismouting is convenient. Hang the top center of post 231 and be equipped with screw thread post 2311, screw thread post 2311's top threaded connection has couple 2312, couple 2312 articulates the cooperation with hanging hole 2201, the string post 231 that is located the below passes through screw thread post 2311 and the cooperation of hanging post 231 bottom shrinkage pool threaded connection who is located the top, this connected mode is convenient for vertical stack a plurality of rows of adhesion disc 230, until its overall height is close to the height of reaction tank 100, thereby it can both be attached to on the early adhesion disc 230 to do benefit to the phosphorus removal fungus 131 in the reaction tank 100, and then carry out the dephosphorization comprehensively to the sewage in the reaction tank 100, reach high-efficient purification's effect.

In this embodiment, the adhesion sheet 230 adopts the PP material to make square thin slice, and cylinder strip 2300, spacing cap 2313 and couple 2312 all adopt the PP material to make, and this material is corrosion-resistant and toughness is good is difficult for breaking, does benefit to the adhesion of phosphorus removing fungus 131, and then long-term and comprehensive reach dephosphorization purifying effect to sewage in the reaction tank 100.

Furthermore, one side surface of the plurality of sliding blocks 212 which is not farthest from the three-phase asynchronous motor 210 is provided with a through hole 2121 inserted into the screw 211, so that the sliding blocks 212 can slide on the screw 211. The slider 212 has seted up draw-in groove 2122 towards the one end at reaction tank 100 middle part, flat groove 2125 has been seted up to the two inboard symmetries of draw-in groove 2122, the both ends and the draw-in groove 2122 joint cooperation of hanging strip 220, constant head tank 2203 has been seted up to the both ends side of hanging strip 220, flat groove 2125 corresponds and the inside bolt that has all pegged graft with the position of constant head tank 2203, this bolt and flat groove 2125 and constant head tank 2203's size looks adaptation, thereby make hanging strip 220 stabilize between a pair of slider 212, expand and drive in a plurality of attachment pieces 230 of its below evenly distribute the reaction tank 100 along with the aversion of slider 212, make the adnexed phosphorus removal fungus 131 on the attachment piece 230 comprehensive dephosphorization purify.

Furthermore, the middle side of the hanging bar 220 is provided with a guide groove 2202 running through the bottom surface of the hanging bar, the guide groove 2202 is clamped with the guide rod 107 and can slide, and the guide rod 107 can support the middle of the hanging bar 220 due to the large span of the hanging bar 220.

In addition, the cylindrical groove 2310 does not penetrate through the hanging column 231, so that the attachment piece 230 is prevented from slipping downwards. Hang post 231 and couple 2312's bottom shrinkage pool inboard all is equipped with the screw thread, the threaded connection of being convenient for. A stopper 2313 is sleeved at the top end of the hanging post 231 for limiting the upward displacement of the attaching plate 230.

As shown in fig. 16 to 21, the recycling apparatus 300 includes a shovel plate 310 sliding on the bottom of the reaction tank 100, and the length of the shovel plate 310 is equal to the inner width of the reaction tank 100, so as to completely remove the deposited degradation products accumulated on the bottom surface thereof. Shovel board 310 is cuboid structure and two long sides face symmetry and has seted up cavity 311, and the inside equidistant of cavity 311 is equipped with a plurality of baffles 312, and this structure does benefit to shovel board 310 when sliding, and the sediment degradation thing is shoveled in the dispersion, avoids the sediment to pile up in shovel board 310's certain section, and is difficult for being shoveled the outside of removing reaction tank 100. Connecting rod 313 that is the rhombus structure is welded to shovel board 310's one end, ring cover 314 is welded to connecting rod 313's outer end, the inboard of ring cover 314 is equipped with the screw thread, be convenient for threaded connection, reaction tank 100 other side bottom seted up with connecting rod 313 sliding connection's dodge groove 160, the inside bonding of dodging groove 160 has sealed cushion 161, sealed cushion 161 adopts rubber to make cuboid structure and horizontal middle level and sets up the crack, be convenient for connecting rod 313 to pass and slide, because connecting rod 313's self structure, it is wrapping up connecting rod 313 to enable sealed cushion 161 seamless, guarantee connecting rod 313 when slideing, can not leave the gap, make sealed cushion 161 play the effect that blocks the precipitate and ooze. The sealing frame 322 is welded on the outer side of the avoiding groove 160, so that the internal sealing performance of the reaction tank 100 is ensured. The forward and reverse rotation motor 320 is installed at one end of the sealing frame 322, which is a conventional technology in the prior art and is not described in detail in the present invention, and the forward and reverse rotation motor works through a matched forward and reverse rotation switch controller. The output shaft coaxial coupling of positive and negative motor 320 has dwang 321, and the lateral surface of dwang 321 is equipped with the screw thread, and dwang 321 inlays the inside of locating sealed frame 322 and with ring cover 314 threaded connection, dwang 321 and sealed frame 322 run through the department cover and are equipped with the sealing washer of rubber material, avoid taking place the seepage. The front and back both ends bottom of reaction tank 100 all is provided with recovery platform 140, recovery platform 140 is overall structure with reaction tank 100, the inside of recovery platform 140 is seted up with the inside recovery chamber 141 that is linked together of reaction tank 100, the width of retrieving chamber 141 is greater than the width of shovel board 310, both length and height equal in addition, shovel board 310 can slide to the inside of retrieving chamber 141, so that push the sediment degradation thing and deposit temporarily in retrieving chamber 141, in order to wait that follow-up whole scoops out. The vertical grafting of recovery platform 140's outer port has shrouding 143 that can reciprocate, and the front and back end inboard of reaction tank 100 just is located recovery platform 140 inner end department and is provided with partition panel 150 that can reciprocate, pushes recovery chamber 141 back in with the sediment degradation thing at shovel board 310, keeps apart recovery chamber 140 through closing shrouding 143 and partition panel 150, opens shrouding 143 again alright draw out the sediment degradation thing in retrieving chamber 141, avoids the sewage outflow in the reaction tank 100.

Further, the outer end top surface department of retrieving platform 140 offers the bar groove 142 that is linked together with retrieving chamber 141, shrouding 143 is pegged graft with bar groove 142, the top surface middle part of retrieving platform 140 and the both sides welding that is located bar groove 142 have support frame 146, support frame 146 is the type of falling concave character structure for the iron set welding, the round hole of taking the internal screw thread is offered at the top surface middle part of support frame 146, the welding of top surface middle part of shrouding 143 has bearing 144, bearing 144's top is closely pegged graft and is had swing arm 145, make swing arm 145 freely rotate, the lateral surface of swing arm 145 be equipped with the screw thread and with support frame 146's round hole threaded connection, make it do spiral elevating movement in the round hole through rotatory swing arm 145, drive shrouding 143 and reciprocate simultaneously, carry out the shutoff to retrieving the outer port in chamber 141.

Further, the equidistant welding of partition panel 150's top surface has a plurality of guide pillars 151, the top cover of guide pillar 151 is equipped with spring 152, the front and back end inboard of reaction tank 100 and have a plurality of spacing rings 155 from the welding of the high department of partition panel 150 in its bottom surface, guide pillar 151 is pegged graft with spacing ring 155, the bottom of spring 152 is located the top surface of spacing ring 155, the top size of guide pillar 151 is greater than the external diameter of spring 152, thereby restrict spring 152 between guide pillar 151 and spacing ring 155, elasticity through spring 152 can promote partition panel 150, make recovery chamber 141 communicate with each other with reaction tank 100 is inside, so that shovel plate 310 pushes away the sediment degradation thing bottom reaction tank 100 to recovery chamber 141.

In addition, the cam 153 is attached to the middle of the top surface of the partition plate 150, the stepping motor 154 is installed on the outer side surface of the front end and the rear end of the reaction cell 100, the stepping motor 154 is a motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement, the rotor rotates by one angle or advances by one step when a pulse signal is input, and further, the rotation of the cam 153 can be set to 180 degrees every time, and the stepping motor 154 is the conventional technology, and is not described in detail in the present invention. The output shaft of the stepping motor 154 penetrates the interior of the reaction cell 100 and is tightly inserted and matched with the top center of the cam 153, the stroke of the cam 153 is equal to the height of the partition plate 150, the stroke of the cam 153 is the distance that the cam 153 rotates for a circle and moves along with a driven part in contact with the cam 153, in the structure, the distance that the partition plate 150 moves downwards is the distance that the partition plate 150 moves downwards, the expansion and contraction amount of the spring 152 is greater than the height of the partition plate 150, after the cam 153 rotates 180 degrees, the partition plate 150 is pushed to the bottom surface of the reaction cell 100 to be attached, at the moment, the spring 152 is in a compressed state, and after the cam 153 rotates 180 degrees again, the partition plate 150 is pushed to the top surface of the recovery cavity 141 under the resilience force of the spring 152, so that the recovery cavity 141 is communicated with the interior of the reaction cell 100.

The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

A process for sewage dephosphorization and degradation product recovery in an MBR system is characterized in that: the method comprises the following steps:

firstly, impurity removal of sewage:

s1, firstly, connecting a sewage pipe of a water suction pump outside the reaction tank with a pipe sleeve on the side surface of a water collection tank, and starting the water suction pump to pump sewage into the water collection tank;

s2, when the sewage slowly rises until the sewage overflows the filter frame and enters the reaction tank from the water outlet and the water inlet, the strip-shaped sundries in the sewage can be automatically wound on the filter strips, and then the filter frame is directly taken out to clean the strip-shaped sundries at intervals;

impurity removal equipment is installed at a top end corner of the reaction tank, a water inlet is formed at a top end corner of one side surface of the reaction tank, the impurity removal equipment comprises a water collecting tank welded on the reaction tank, a water outlet is formed in the other side surface of the top end of the water collecting tank, and a filter frame is arranged above the inner part of the water collecting tank;

II, placing phosphorus-removing bacteria:

s3, filling the annular sleeve for placing the bacteria rods with phosphorus removing bacteria, inserting the bacteria rods into the square holes of the suspension rods, and then placing the bacteria rods right in front of the aeration equipment;

s4, switching on a power supply of the aerator to aerate the aerator, conveying the aerator to the gas conveying pipe, the aeration main pipe and the aeration branch pipes, and spraying the aerator from the gas outlet pipe heads to blow the phosphorus removing bacteria in the circular sleeve into the reaction tank to be fully mixed with the sewage;

the device comprises a reaction tank, a plurality of bacteria placing rods, a plurality of aeration branch pipes, a plurality of bacteria placing rods and a plurality of bacteria collecting and distributing device, wherein the bacteria placing rods are arranged right in front of the aeration device, the aeration machine is arranged on the outer side surface of the reaction tank, the aeration main pipe is connected with the aeration machine, and the bacteria placing rods are provided with a plurality of annular sleeves for filling phosphorus removing bacteria;

thirdly, sewage dephosphorization stage:

s5, connecting a plurality of hanging columns into a string, inserting an attachment piece on each hanging column, and hanging the assembly whole on the hanging holes of the hanging strips until the hanging holes of all the hanging strips are fully hung on the assembly whole;

s6, switching on a forward rotation switch of the three-phase asynchronous motor to electrify the three-phase asynchronous motor to drive the screw rod to rotate forward, synchronously driving the slide block far away from the three-phase asynchronous motor to approach to the other end of the screw rod, and further driving the connecting rods to draw each other to spread in a transmission manner so as to drive the attaching sheets to be fully distributed in the reaction tank;

s7, when the attachment pieces need to be replaced, the reversing switch of the three-phase asynchronous motor is switched on, so that the screw rod is driven to rotate, the sliding blocks are synchronously driven to be folded, and the attachment pieces are replaced in a centralized manner;

the phosphorus removal equipment is distributed in the whole reaction tank and comprises three-phase asynchronous motors symmetrically arranged at the top of the outer side of the reaction tank, output shafts of the three-phase asynchronous motors are coaxially connected with lead screws, a plurality of sliding blocks are sleeved on the outer sides of the lead screws, the bottom of each sliding block is connected with a connecting rod, the connecting rods of two adjacent sliding blocks are rotatably connected through pins, a plurality of hanging strips moving along with the sliding blocks are arranged between the two lead screws, and a plurality of rows of attachment pieces are arranged below the hanging strips;

fourthly, cleaning the sewage sediment degradation products:

s8, after phosphorus removal, degradation and precipitation, switching on a forward rotation switch of a forward and reverse rotation motor to enable the forward rotation switch to work, and further driving a rotating rod to rotate forward, so that a ring sleeve moves linearly along with the rotation of the rotating rod, and further driving a shovel plate to move to the front end of the reaction tank and shovel out precipitation and degradation products accumulated at the bottom of the reaction tank;

s9, when the shovel board pushes the sediment degradation product at the bottom of the reaction tank to the recovery cavity, the power supply of the stepping motor is switched on to make the shovel board work, the cam is driven to rotate 180 degrees, and the partition board is pressed down to the bottom surface of the reaction tank;

s10, driving the sealing plate to ascend by rotating the rotary rod to open the recovery cavity, and then drawing out the precipitated and degraded substances in the recovery cavity;

s11, after the interval time, switching on a reverse switch of the forward and reverse rotation switch to enable the reverse rotation switch to work, further driving the rotating rod to reversely rotate, driving the shovel plate to shovel the precipitated and degraded substances at the bottom of the reaction tank to a recovery cavity at the rear end of the reaction tank, continuing to operate according to S9 and S10, firstly closing the partition plate at the rear end of the reaction tank, then opening the sealing plate at the rear end of the reaction tank, and finally digging out the precipitated and degraded substances in the recovery cavity;

recovery plant is located the interior bottom of reaction tank, it is including being located the gliding shovel board of reaction tank bottom, the one end welding of shovel board has the connecting rod that is the rhombus structure, the outer end welding of connecting rod has the ring cover, two outsides of reaction tank bottom are fixed with the seal frame, positive reverse motor is installed to the one end of seal frame, the output shaft coaxial coupling of positive reverse motor has the dwang, dwang and ring cover threaded connection, both ends bottom all is provided with the recovery platform around the reaction tank, the recovery chamber that communicates mutually in the reaction tank is seted up to the inside of recovery platform, the vertical grafting of outer port of recovery platform has the shrouding that can reciprocate, the inboard partition panel that can reciprocate that just is located the interior end department of recovery platform of front and back end of reaction tank.
2. The process for phosphorus removal from wastewater and recovery of degradation products in an MBR system of claim 1, wherein: a plurality of the ring cover is corresponding with the position of a plurality of air outlet pipe heads, and the top of putting the fungus pole is equipped with the gag lever post that is T type structure, and one side of aeration house steward is provided with the suspension pole, and the top surface of suspension pole just with put fungus pole with the position department seted up a plurality of square holes, put fungus pole and square hole and peg graft, both ends one side of suspension pole be equipped with the fixture block of aeration house steward joint.
3. The process for sewage phosphorous removal and recovery of degradation products thereof in an MBR system according to claim 1, wherein: one side of slider and the inboard laminating of reaction tank, wherein the side of keeping away from three-phase asynchronous machine's slider sets up the screw hole with lead screw threaded connection, the bottom surface of slider is equipped with the projection, the connecting rod has been cup jointed on the projection, the side of hanging strip is the equidistant a plurality of hanging holes of having seted up of straight line, the through-hole of pegging graft with the lead screw is seted up to a side of a plurality of sliders that are not the farthest from three-phase asynchronous machine, the draw-in groove has been seted up towards the one end at reaction tank middle part to the slider, the flat groove has been seted up to two inboard symmetries of draw-in groove, the both ends and the draw-in groove joint cooperation of hanging strip, the constant head tank has been seted up to the both ends side of hanging strip, the flat groove corresponds and inside all pegs graft with the position of constant head tank has the bolt.
4. The process for phosphorus removal from wastewater and recovery of degradation products in an MBR system of claim 2, wherein: the middle part of reaction tank is inboard and with the lead screw with the same horizontal position department inlay and be equipped with the guide bar, the top surface middle part of suspension pole is equipped with and pegs graft and slidable guide block with the guide bar, the guide way that runs through its bottom surface is seted up to the middle part side of hanging strip, guide way and guide bar joint and slidable.
5. The process for phosphorus removal from wastewater and recovery of degradation products in an MBR system of claim 1, wherein: the vertical one end of adhesion sheet is equipped with the cylinder strip, the vertical one end of a plurality of adhesion sheets is connected with the peg, the top of peg just runs through the lateral surface and sets up the cylinder groove of pegging graft with the cylinder strip, the top center of peg is equipped with the screw thread post, the top threaded connection of screw thread post has the couple, the couple articulates the cooperation with the hanging hole, the peg that is located the below passes through the screw thread post and cooperates with the peg bottom shrinkage pool threaded connection who is located the top, the adhesion sheet adopts the nylon material to make integrated into one piece structure, the cylinder groove does not run through the peg, the bottom shrinkage pool inboard of peg and couple all is equipped with the screw thread, the top of peg has cup jointed spacing cap.
6. The process for sewage phosphorous removal and recovery of degradation products thereof in an MBR system according to claim 1, wherein: the shovel board is cuboid structure and two long-side symmetries and has seted up the cavity, the inside equidistant of cavity is equipped with a plurality of baffles, reaction tank opposite side bottom seted up with connecting rod sliding connection dodge the groove, the inside bonding that dodges the groove has sealed cushion, sealed frame cover is located the outside of dodging the groove, the bar groove that is linked together with retrieving the chamber is seted up in the outer end top surface department of recovery platform, the shrouding is pegged graft with the bar groove, the top surface middle part of recovery platform and the both sides welding that is located the bar groove have the support frame, the round hole of in-band screw thread is seted up at the top surface middle part of support frame, the top surface middle part welding of shrouding has the bearing, the top of bearing closely pegs graft there is the swing arm, the lateral surface of swing arm is equipped with the screw thread and with the round hole threaded connection of support frame.
7. The process for sewage phosphorous removal and recovery of degradation products thereof in an MBR system according to claim 1, wherein: the top surface equidistant welding of partition panel has a plurality of guide pillars, and the top cover of guide pillar is equipped with the spring, and the front and back end inboard of reaction tank and the department of height that has a partition panel from its bottom surface have a plurality of spacing rings of welding, and the guide pillar is pegged graft with the spacing ring, and the bottom of spring is located the top surface of spacing ring.
8. The process for phosphorus removal from wastewater and recovery of degradation products in an MBR system of claim 7, wherein: the laminating of the top surface middle part of partition panel has the cam, and step motor is installed to the front and back end lateral surface of reaction tank, and step motor's output shaft runs through to the inside of reaction tank and closely pegs graft the cooperation with the top center of cam, and the stroke of cam is equal with the height of partition panel, and the flexible volume of spring is greater than the height of partition panel.
9. The process for phosphorus removal from wastewater and recovery of degradation products in an MBR system of claim 1, wherein: the bottom of header tank is trapezoidal platform structure and bottom opening, socket has been seted up to a bottom side level of header tank, the inside of socket is pegged graft and is had the picture peg, the bottom of outlet flushes with the bottom of water inlet, the two inboard symmetrical welding of header tank have the fixed strip that is rectangular shape, filter the frame and place in the top of fixed strip, the equidistant welding in inside of filtering the frame has a plurality of filtration strips, the water inlet is square structure and has seted up the slot from top to bottom, the water inlet runs through the lateral surface of reaction tank, the inside of slot is pegged graft and is had the regulating block, the one end top department of regulating block has seted up the connecting hole, servo motor is installed to the lateral surface of reaction tank, servo motor's output shaft coaxial coupling has threaded rod and connecting hole threaded connection.
10. The process for sewage phosphorous removal and recovery of degradation products thereof in an MBR system according to claim 1, wherein: aeration is in charge of and is equipped with a plurality of air outlet pipe heads towards inside one side of reaction tank, and the gas-supply pipe is installed to aeration machine's output, and the gas-supply pipe runs through to the inside of reaction tank, and the air inlet of closely pegging graft with the gas-supply pipe is seted up to aeration house steward's middle part side, and the inboard of reaction tank just is close to one side equidistant welding of gas-supply pipe has a plurality of fixed blocks, and the jack has been seted up at the top surface center of fixed block, and aeration house steward's bottom is equipped with the post of inserting of pegging graft with the jack.