CN117945607B - Wastewater treatment system for farm - Google Patents

Abstract

The invention relates to a wastewater treatment system of a farm, which comprises an adjusting tank, a filter tank, an air floatation tank, an anaerobic tank, a sedimentation tank, an aeration tank and an aerobic tank which are sequentially connected, wherein the aerobic tank is connected with an ozone treatment tank, the bottom of the ozone treatment tank is provided with a water inlet pipe and an air inlet pipe, one end of the air inlet pipe is communicated with the water inlet pipe, and the other end of the air inlet pipe is connected with an ozone source; the ozone treatment tank is internally provided with a floating ball filler, the floating ball filler comprises an inner hollow ball, a filler particle layer and an outer net shell, and the density of the floating ball filler is less than that of water; the upper portion of ozone treatment jar is provided with the delivery port, and the delivery port is connected with the drainage groove of slope, and the lower extreme of drainage groove is provided with collects the storehouse, collects the lower extreme and the inlet tube intercommunication of storehouse, and the below of drainage groove is provided with the catch basin. According to the invention, the ozone treatment tank is arranged, so that the ozone can generate hydroxyl free radicals under the action of the catalyst, and the hydroxyl free radicals decompose organic matters such as antibiotics and the like remained in the wastewater, thereby reducing the content of the antibiotics and improving the treatment effect of the wastewater.

Description

Wastewater treatment system for farm

Technical Field

The invention belongs to the field of sewage treatment, and particularly relates to a wastewater treatment system for a farm.

Background

The farm can generate a large amount of wastewater every day, and the wastewater contains a large amount of fecal residues and food residues and is rich in organic matters, nitrogen, phosphorus and other pollution components, and the wastewater can be discharged after being treated.

At present, the treatment flow of the wastewater of the farm is as follows: the contents of organic pollutants, phosphorus, nitrogen, suspended matters and other pollution components in the wastewater are greatly reduced after treatment, and the wastewater of the farm contains antibiotics besides the conventional pollution components due to the fact that the antibiotics are filled in the chicken feed generally.

Disclosure of Invention

The invention aims to solve the technical problem of providing a wastewater treatment system for a farm, which can effectively remove antibiotics.

In order to solve the problems, the invention adopts the following technical scheme: the wastewater treatment system of the farm comprises an adjusting tank, a filter tank, an air floatation tank, an anaerobic tank, a sedimentation tank, an aeration tank and an aerobic tank which are sequentially connected through pipelines, wherein the aerobic tank is connected with an ozone treatment tank, the bottom of the ozone treatment tank is provided with a water inlet pipe and an air inlet pipe, one end of the air inlet pipe is communicated with the water inlet pipe, and the other end of the air inlet pipe is connected with an ozone source; the water inlet pipe is provided with a water inlet pump and is connected with the aerobic tank; the ozone treatment tank is internally provided with a plurality of floating ball fillers, each floating ball filler comprises an inner hollow ball, a filler particle layer and an outer net shell, and the inner hollow balls, the filler particle layers and the outer net shells are sequentially arranged from inside to outside, and the density of each floating ball filler is less than that of water; the upper portion of ozone treatment jar is provided with the delivery port, the delivery port is connected with the drainage groove of slope, the lower extreme of drainage groove is provided with the collection storehouse, the lower extreme and the inlet tube intercommunication of collection storehouse, the below of drainage groove is provided with the catch basin.

Further, mud discharging mechanisms are arranged at the bottoms of the regulating tank, the filter tank, the sedimentation tank, the anaerobic tank and the aerobic tank.

Further, a filter plate is arranged above the regulating tank.

Further, a support rail is arranged in the filter tank, a first filter tank and a second filter tank are arranged on the support rail, the first filter tank and the second filter tank are matched with the support rail, and the first filter tank and the second filter tank are connected with a first driving mechanism.

Further, an air supply mechanism is arranged at the bottom of the air floatation tank, a slag scraping mechanism is arranged at the upper part of the air floatation tank and comprises a transmission belt, a driving shaft, a driven shaft, a guide shaft and a semicircular baffle cover, the driving shaft and the driven shaft are positioned at the same height, the guide shaft is arranged above the driven shaft, the transmission belt is arranged on the driving shaft, the driven shaft and the guide shaft and is distributed in an obtuse triangle manner, the transmission belt between the driving shaft and the driven shaft is a horizontal slag scraping section, the transmission belt between the driven shaft and the guide shaft is an inclined transmission section, and the transmission belt between the guide shaft and the driving shaft is an inclined slag removing section; the conveying belt is provided with a baffle cover which is arranged outside the driving shaft and is coaxial with the driven shaft, and when the slag scraping plate passes through the baffle cover, the side edge of the slag scraping plate is in sliding fit with the baffle cover; the slag collecting groove is arranged below the deslagging section, the vibrating block is arranged above the deslagging section and connected with the second driving mechanism for driving the vibrating block to knock the deslagging section.

Further, the second driving mechanism is an air cylinder.

Further, microbial fillers are suspended in the anaerobic tank and the aerobic tank.

Further, a plurality of vertical first partition plates are arranged in the sedimentation tank, and the inner cavity of the sedimentation tank is divided into S-shaped flow channels by the plurality of vertical partition plates.

Further, be provided with vertical second baffle in the catch basin, the second baffle separates the catch basin inner chamber into water collecting chamber and infiltration chamber, the water collecting chamber is located the below of drainage tank, just have the intercommunication interval between the diapire of bottom and the catch basin of second baffle, be provided with the quartz sand filter layer in the infiltration chamber, the top of quartz sand filter layer is provided with overflow play basin.

Further, a back flushing pipe network is arranged above the quartz sand filtering layer.

The beneficial effects of the invention are as follows: 1. according to the invention, the ozone treatment tank is arranged, so that the ozone can generate hydroxyl free radicals under the action of the catalyst, and the hydroxyl free radicals decompose organic matters such as antibiotics and the like remained in the wastewater, thereby reducing the content of the antibiotics and improving the treatment effect of the wastewater.

2. The traditional catalyst is of a structure of a packing plate, is usually fixedly installed, and after a long time, tiny particles in wastewater can adhere to the surface of the catalyst to influence the contact of the catalyst and ozone, so that the speed of generating hydroxyl free radicals is reduced, and the treatment efficiency is influenced. The invention uses the floating ball filler to load the catalyst, the floating ball filler and the ozone enter the ozone treatment tank from the bottom of the ozone treatment tank, and the density of the floating ball filler is smaller than that of the wastewater, so that the floating ball filler gradually moves upwards to the liquid level, the floating ball filler moves, the ozone also moves, and the ozone can be promoted to be fully and uniformly contacted with the particle layer of the filler. When the floating ball filler reaches the liquid level of the wastewater, the wastewater flows downwards into the water collecting tank after passing through the filtering holes of the water filtering tank along with the wastewater, and the floating ball filler rolls into the collecting bin along with the water filtering tank and then reenters the water inlet pipe, so that the recycling is realized. When the floating ball filler rolls in the water filtering tank, the floating ball filler vibrates and is flushed by wastewater, so that particles adhered to the surface of the filler particle layer can be separated from the filler particle layer, the surface of the filler particle layer is clean, the floating ball filler can be fully contacted with ozone, and the generation efficiency of hydroxyl free radicals is ensured.

Drawings

FIG. 1 is an overall schematic of the present invention;

FIG. 2 is a schematic view in front cross-section of an ozone treatment tank;

FIG. 3 is a schematic cross-sectional view of a floating ball packing;

FIG. 4 is a schematic side cross-sectional view of the sump;

FIG. 5 is a schematic top view of a filter;

FIG. 6 is a schematic front view of an air floatation tank;

FIG. 7 is a schematic top view of a sedimentation tank;

FIG. 8 is a schematic view of the mud discharging mechanism of the present invention;

reference numerals: 101-an adjusting tank; 102, a filter tank; 103-an air floatation tank; 104-an anaerobic tank; 105-a sedimentation tank; 106, an aeration tank; 107-an aerobic tank; 108-an ozone treatment tank; 109-inlet pipe; 110-an air inlet pipe; 111-an ozone source; 112-a water inlet pump; 113-an inner hollow sphere; 114—a layer of filler particles; 115-outer net shell; 116-a water outlet; 117-a water filtering tank; 118—a collection bin; 119-a sump; 120-filtering plates; 121—a support rail; 122-a first filter tank; 123-a second filter tank; 124—a first drive; 125-air supply mechanism; 126-a conveyor belt; 127-a slag scraping plate; 128-shield; 129-drive shaft; 130-a driven shaft; 131-a guide shaft; 132-slag collecting tank; 133-vibrating mass; 134-a second drive mechanism; 135—microbial filler; 136—a first separator; 137-a second separator; 138-quartz sand filter layer; 139-overflow water outlet tank; 140-back flushing pipe network; 141-a linker; 142-dirt inlet side wall; 143-a waste side wall; 144-a sewage inlet; 145-lower purge port; 146-a sewage cleaning port; 147-a sewage outlet; 148-a cleaning door; 149-a sewage outlet; 150—a switch; 151-a sewage drain pipe; 152-a sewage pump; 153-a porous sludge discharge pipe.

Detailed Description

The invention will be further described with reference to the drawings and examples.

The wastewater treatment system of the farm comprises an adjusting tank 101, a filter tank 102, an air floatation tank 103, an anaerobic tank 104, a sedimentation tank 105, an aeration tank 106 and an aerobic tank 107 which are sequentially connected through pipelines.

Wherein, equalizing basin 101 is used for adjusting quality of water and water yield, because the waste water of plant is inhomogeneous, and waste water certain time quantum is concentrated and is produced, consequently adopts equalizing basin 101 to store waste water, then evenly carries the waste water in the equalizing basin 101 to follow-up treatment facility, guarantees that wastewater treatment system operates steadily. Besides waste water, a large amount of excrement can be produced in a farm, the water content in the excrement is high, certain water is needed to be removed firstly, and then fermentation treatment is carried out to prepare the fertilizer, in order to facilitate water removal, the filter plate 120 is arranged above the regulating tank 101, the filter plate 120 can be a metal plate or a concrete plate, a large amount of water filtering holes are formed in the filter plate 120, the collected excrement is piled on the filter plate 120, the water in the excrement can automatically flow downwards into the regulating tank 101, independent dehydration equipment is not needed, the treatment cost is reduced, and the occupied area is reduced.

Because the wastewater of the farm contains a large amount of solid matters such as excrement, feed residues and the like, the wastewater is subjected to preliminary filtration by adopting the filter tank 102, so that a large amount of solid components in the wastewater are removed, and the solid waste content is reduced. Specifically, a conventional grid or a basket can be arranged in the filter tank 102, in order to facilitate cleaning and filtering out solid impurities, a support rail 121 is arranged in the filter tank 102, the support rail 121 is horizontally arranged, a first filter tank 122 and a second filter tank 123 are arranged on the support rail 121, the first filter tank 122 and the second filter tank 123 are matched with the support rail 121, specifically, the first filter tank 122 and the second filter tank 123 can be in sliding fit with the support rail 121, and rollers can be arranged at the bottoms of the first filter tank 122 and the second filter tank 123, and the rollers are matched with the support rail 121. The first filter tank 122 and the second filter tank 123 are each connected to a first driving mechanism 124. The first filter tank 122 and the second filter tank 123 may be formed by welding metal plates with filter holes, and when wastewater is introduced into the first filter tank 122 and the second filter tank 123, a large volume of solid impurities will stay in the first filter tank 122 and the second filter tank 123, and the wastewater flows down into the filter tank 102. When the operation is performed, the first filter tank 122 is driven to the lower part of the water inlet position, the wastewater is introduced into the first filter tank 122, and when the solid waste in the first filter tank 122 reaches a certain amount, the first filter tank 122 is pushed to leave the water inlet position by the first driving mechanism 124, and meanwhile, the second filter tank 123 is pushed to the lower part of the water inlet position, so that the solid impurities in the first filter tank 122 can be cleaned. The first filter tank 122 and the second filter tank 123 alternately operate, which not only ensures continuous wastewater treatment, but also can conveniently clean filtered solid impurities. The first driving mechanism 124 may be a hydraulic cylinder or a common power device such as a screw nut pair driven by a motor.

The air floatation tank 103 is a very common wastewater treatment facility by introducing a large number of microbubbles into the wastewater, collecting suspended matters in the wastewater by the microbubbles, driving the suspended matters to move upwards to the liquid level of the wastewater, and removing scum by adopting a scum scraping mechanism. The scum scraping mechanism generally adopts the scraping plate to scrape the scum, but the scum is easy to adhere to the scraping plate and the conveying mechanism, and the scum is easy to fall into the wastewater again along with the operation of the scraping plate and the conveying mechanism, so that the treatment effect is affected.

The bottom of the air floatation tank 103 is provided with the air supply mechanism 125, and the air supply mechanism 125 is used for generating a large number of micro bubbles by adopting the prior art. The upper part of the air floatation tank 103 is provided with a slag scraping mechanism, the slag scraping mechanism comprises a transmission belt 126, a driving shaft 129, a driven shaft 130, a guide shaft 131 and a semicircular baffle cover 128, the driving shaft 129 and the driven shaft 130 are positioned at the same height, the guide shaft 131 is arranged above the driven shaft 130, the transmission belt 126 is arranged on the driving shaft 129, the driven shaft 130 and the guide shaft 131, the transmission belt 126 is distributed in an obtuse triangle, the transmission belt 126 between the driving shaft 129 and the driven shaft 130 is a horizontal slag scraping section, the transmission belt 126 between the driven shaft 130 and the guide shaft 131 is an inclined transmission section, and the transmission belt 126 between the guide shaft 131 and the driving shaft 129 is an inclined slag removing section; the surface of the conveyor belt 126 is provided with a scraper 127 perpendicular to the conveyor belt 126, a shield 128 is provided outside the driving shaft 129, and the shield 128 is coaxial with the driven shaft 130, and the side edges of the scraper 127 are in sliding engagement with the shield 128 when the scraper 127 passes the shield 128. The cross section of the shielding cover 128 is in a semicircular shape, the center line of the shielding cover 128 and the center line of the driven shaft 130 are positioned at the same height, and the opening of the shielding cover 128 faces the driven shaft 130. A slag collecting groove 132 is arranged below the deslagging section, a vibrating block 133 is arranged above the deslagging section, and the vibrating block 133 is connected with a second driving mechanism 134 for driving the vibrating block 133 to knock the deslagging section.

The driving shaft 129 is connected with a driving motor, and the driving shaft 129 can rotate under the driving of the driving motor, so that the transmission belt 126 is driven to move. The number of the scum plates 127 is plural and uniformly distributed. The scraper 127 moves along with the conveyor belt 126, when the scraper 127 moves to the scraper stage, the scraper 127 is in a vertical state, and the lower side edge of the scraper 127 is at the liquid level of the wastewater, so that when the scraper 127 moves, the dross can be scraped, so that the dross moves toward the shield 128. When the scum scraper 127 moves to the shield 128, the scum scraper 127 drives the scum into the shield 128 and pushes the scum along the circumference of the shield 128, and drops onto the conveyor 126 when the scum moves to the upper side edge of the shield 128. The conveying belt 126 conveys the dross to the deslagging section, a large part of the dross falls into the slag collecting groove 132 under the action of gravity, a small part of the dross adheres to the conveying belt 126 and the slag scraping plate 127, the second driving mechanism 134 is used for driving the vibrating block 133 to continuously move back and forth, the moving track of the vibrating block 133 is perpendicular to the conveying belt 126 of the deslagging section, the vibrating block 133 continuously knocks the conveying belt 126, and the dross adhering to the conveying belt 126 and the slag scraping plate 127 is vibrated to separate from the conveying belt 126 and the slag scraping plate 127. The second drive mechanism 134 may employ an air cylinder.

The anaerobic tank 104 and the aerobic tank 107 are used for carrying out biochemical treatment on wastewater, microbial fillers 135 are suspended in the anaerobic tank 104 and the aerobic tank 107, the microbial fillers 135 are braid-type fillers, and the suspended installation is convenient for maintenance and replacement. The sedimentation tank 105 is used for removing sludge in the wastewater, and in order to prolong the residence time of the wastewater in the sedimentation tank 105, a plurality of vertical first partition plates 136 are arranged in the sedimentation tank 105, and the inner cavity of the sedimentation tank 105 is divided into S-shaped flow channels by the plurality of vertical first partition plates 136. An aeration device is arranged in the aeration tank 106 and is used for aerating the wastewater so as to increase the oxygen content in the wastewater.

Since the wastewater in the regulating tank 101, the filter tank 102, the sedimentation tank 105, the anaerobic tank 104 and the aerobic tank 107 all contain solid impurities or sludge, the bottoms of the regulating tank 101, the filter tank 102, the sedimentation tank 105, the anaerobic tank 104 and the aerobic tank 107 are all provided with a sludge discharging mechanism for discharging the sludge settled to the bottom of the tank body.

Traditional mud discharging mechanism is including setting up the porous mud discharging pipe in the treatment tank bottom, and the one end of porous mud discharging pipe stretches out the treatment tank and through flange joint outside pipeline, and sewage treatment system long-term operation in-process, mud is silted up in flange joint department very easily, leads to mud discharging mechanism to block up, when dredging the processing, must demolish interconnect's flange, will remove outside pipeline a section distance, then clear up the silt in porous mud discharging pipe and the outside pipeline. Because the external pipeline generally adopts a metal pipe, the weight is heavy, the movement is inconvenient, the joint and the installation are needed again after dredging, and the operation is very laborious. In addition, when the connection of flange is removed, the inside sewage of pipeline, mud must splash, clear up inconveniently.

In order to solve the above problems, the sludge discharging mechanism of the present invention comprises a porous sludge discharging pipe 153, a connecting piece and a sewage discharging pipe 151, wherein the sewage discharging pipe 151 is provided with a sewage discharging pump 152, the porous sludge discharging pipe 153 is arranged at the bottom of the tank bodies such as the regulating tank 101, the filtering tank 102, the sedimentation tank 105, the anaerobic tank 104, the aerobic tank 107, etc., and the connecting piece is arranged at the outside of each tank body and is used for connecting the porous sludge discharging pipe 153 and the sewage discharging pipe 151. The connector specifically comprises a connector 141 with an inner cavity, the connector 141 is provided with a sewage inlet side wall 142 and a sewage outlet side wall 143, the sewage inlet side wall 142 and the sewage outlet side wall 143 are mutually parallel, the upper part of the sewage inlet side wall 142 is provided with a sewage inlet 144, the lower part of the sewage inlet side wall 142 is provided with a lower sewage cleaning port 145, the upper part of the sewage outlet side wall 143 is provided with an upper sewage cleaning port 146, the lower part of the sewage outlet side wall 143 is provided with a sewage outlet 147, the sewage inlet 144 is coaxial with the upper sewage cleaning port 146, and the sewage outlet 147 is coaxial with the lower sewage cleaning port 145; the upper cleaning port 146 and the lower cleaning port 145 are provided with a cleaning door 148 which can be opened and closed; the bottom of the connector 141 is provided with a drain outlet 149, and the drain outlet 149 is provided with a switch member 150 which can be opened and closed; the sewage inlet 144 is connected with a porous sludge discharge pipe 153, and the sewage outlet 147 is connected with a sewage discharge pipe 151.

The connector 141 has a certain cavity, which can play a role in transferring sludge, and in particular, the connector 141 may have a cylindrical shape, preferably a rectangular parallelepiped shape. The connector 141 may be welded using a corrosion-resistant metal plate, for example, a stainless steel plate. The sewage inlet 144 is used for connecting a porous sludge discharge pipe 153, the sewage outlet 147 is used for connecting a sewage discharge pipe 151, specifically, the sewage inlet 144 is connected with the porous sludge discharge pipe 153 through a flange, and the sewage outlet 147 is connected with the sewage discharge pipe 151 through a flange. The sewage outlet 147 is arranged below the sewage inlet 144, so that sludge can enter the sewage drain 151. After the sewage inlet 144 is connected with the porous sludge discharge pipe 153, the sewage outlet 147 is connected with the sewage discharge pipe 151, and the sludge at the bottom of the porous sludge discharge pipe 153 can enter the sewage discharge pipe 151 through the connector 141. The upper cleaning port 146 is used for dredging the sewage inlet 144, the lower cleaning port 145 is used for dredging the sewage outlet 147, and the sewage outlet 147 is coaxial with the lower cleaning port 145 because the sewage inlet 144 is coaxial with the upper cleaning port 146, so that after the upper cleaning port 146 stretches into the connecting body 141, a dredging tool can directly stretch into the sewage inlet 144, thereby cleaning the sludge in the sewage inlet 144, and likewise, after the lower cleaning port 145 stretches into the connecting body 141, the dredging tool can directly stretch into the sewage outlet 147, thereby cleaning the sludge in the sewage outlet 147. In normal operation, the purge gate 148 closes the upper purge port 146 and the lower purge port 145, preventing sludge from being discharged through the upper purge port 146 and the lower purge port 145.

Because sludge can accumulate in the connector 141, during dredging, the sludge in the connector 141 is discharged first, and during dredging, the switch member 150 is opened to open the sewage outlet 149, so that the sludge in the connector 141 can be discharged downwards through the sewage outlet 149, and simultaneously, after the sludge in the sewage inlet 144 and the sewage outlet 147 is cleaned to the connector 141, the sludge can also be discharged through the sewage outlet 149.

The dredging process of the mud discharging mechanism is as follows: when the sewage inlet 144 and the sewage outlet 147 are blocked by sludge, the switch member 150 is opened first, so that the sewage outlet 149 is opened, and sewage and sludge in the connecting member are automatically discharged through the sewage outlet 149, so that the subsequent dredging operation is facilitated. After the sewage and the sludge inside the connecting piece are completely discharged, the sewage cleaning door 148 at the positions of the upper sewage cleaning port 146 and the lower sewage cleaning port 145 is opened, and as the sewage inlet 144 is coaxial with the upper sewage cleaning port 146 and the sewage outlet 147 is coaxial with the lower sewage cleaning port 145, a dredging tool can extend into the upper sewage cleaning port 146 and the lower sewage cleaning port 145 from the inner cavity of the connecting piece, and extend into the sewage inlet 144 and the sewage outlet 147, so that the sludge jammed in the sewage inlet 144 and the sewage outlet 147 can be scraped into the connecting piece, and the sludge is discharged from the sewage outlet 149. After dredging, the switch 150 is closed to reclose the cleaning door 148 at the upper cleaning port 146 and the lower cleaning port 145. Before dredging, the invention can set a collecting device below the sewage outlet 149 to collect the sludge and the sewage, prevent the sewage from splashing, and the invention is more convenient and labor-saving to operate without dismantling connecting pieces such as flanges and the like during dredging.

The cleaning door 148 may be connected to the connector 141 by various existing connection methods, for example, the top of the cleaning door 148 is connected to the connector 141 by a hinge, and the lower part is connected to the connector 141 by a latch, preferably, the cleaning door 148 is connected to the connector 141 by a plurality of bolts, in order to improve the sealing performance and prevent leakage of sewage, a sealing pad is provided between the cleaning door 148 and the connector 141, and the sealing pad may be an elastic pad such as a rubber pad.

The opening and closing member 150 may be a door opening and closing structure, and the opening and closing member 150 may be a drain valve for convenience of operation.

The pipelines among the regulating tank 101, the filter tank 102, the air floatation tank 103, the anaerobic tank 104, the sedimentation tank 105, the aeration tank 106 and the aerobic tank 107 comprise pipelines, and pumps can be arranged on the pipelines according to the requirements to control the flow speed of the wastewater. The regulating tank 101, the filter tank 102, the air floatation tank 103, the anaerobic tank 104, the sedimentation tank 105, the aeration tank 106 and the aerobic tank 107 can be metal tanks, concrete tanks, site construction, and prefabrication into a skid-mounted integrated structure in a factory, and then transportation to a treatment site for installation.

Ozone is known to be capable of generating hydroxyl radicals under the action of a catalyst, and the hydroxyl radicals have strong oxidizing properties and can react with various organic matters to decompose the organic matters. The invention utilizes the hydroxyl radical generated by ozone to decompose antibiotics in the wastewater, and the hydroxyl radical can decompose other residual organic matters at the same time, thereby ensuring the wastewater treatment effect.

Specifically, the aerobic tank 107 is connected with an ozone treatment tank 108, the ozone treatment tank 108 is vertically arranged, and a group of supporting legs can be used for supporting the ozone treatment tank 108 as vertical equipment. The bottom of the ozone treatment tank 108 is provided with a water inlet pipe 109 and an air inlet pipe 110, the water inlet pipe 109 is provided with a water inlet pump 112, and the water inlet pipe 109 is connected with the aerobic tank 107. One end of the air inlet pipe 110 is communicated with the water inlet pipe 109, and the other end is connected with an ozone source 111. The water inlet pipe 109 is used for introducing wastewater, the air inlet pipe 110 is used for introducing ozone, and the ozone source 111 can adopt an ozone storage tank or an existing ozone generating device for providing ozone. The air inlet pipe 110 introduces ozone into the water inlet pipe 109 so that the ozone flows with the wastewater, and the ozone can be more fully and uniformly dispersed in the wastewater.

The ozone treatment tank 108 is internally provided with a plurality of floating ball fillers, each floating ball filler comprises an inner hollow ball 113, a filler particle layer 114 and an outer net shell 115, which are sequentially arranged from inside to outside, and the density of each floating ball filler is less than that of water; the upper portion of ozone treatment jar 108 is provided with delivery port 116, and delivery port 116 is connected with the drainage groove 117 of slope, and the lower extreme of drainage groove 117 is provided with and collects storehouse 118, and the lower extreme and the inlet tube 109 of collection storehouse 118 communicate, and the below of drainage groove 117 is provided with catch basin 119.

The inner hollow sphere 113 can be a plastic hollow sphere, which has light weight and low cost. The filler particle layer 114 is a granular catalyst, and the catalyst may be a commonly used catalyst such as Fe ₂O₃、Al₂O₃、TiO₂、MnO₂. The outer net shell 115 may be a plastic shell, and a plurality of water inlet and outlet holes are formed in the outer net shell 115, and the diameters of the water inlet and outlet holes are smaller than the particle diameter of the filler particle layer 114, so that the filler particle layer 114 is prevented from leaking. The filler particle layer 114 may be irregularly shaped particles to increase the contact area with ozone and wastewater. The whole density of the floating ball filler is smaller than that of water, so that the floating ball filler can automatically float up to the liquid level of the wastewater.

The traditional catalyst is usually manufactured into a filler plate, and the filler plate is fixedly arranged in treatment equipment, but as the wastewater contains suspended matters, sludge and other solid particles, after a long time, tiny particles in the wastewater can adhere to the surface of the catalyst, so that the contact between the catalyst and ozone is influenced, the speed of generating hydroxyl free radicals is reduced, and the treatment efficiency is influenced. The invention uses the floating ball filler to load the catalyst, the floating ball filler and the ozone enter the ozone treatment tank 108 from the bottom of the ozone treatment tank 108, and the floating ball filler gradually moves upwards to the liquid surface of the wastewater because the density of the floating ball filler is smaller than that of the wastewater, the floating ball filler moves, and the ozone also moves, so that the ozone and a filler particle layer can be promoted to be fully and uniformly contacted. When the floating ball filler reaches the wastewater level, as the wastewater enters the water filtering tank 117, the wastewater flows downwards into the water collecting tank 119 after passing through the filtering holes of the water filtering tank 117, and the floating ball filler rolls into the collecting bin 118 along the water filtering tank 117 and then reenters the water inlet pipe 109, so that the recycling is realized. When the floating ball filler rolls in the water filtering groove 117, the floating ball filler vibrates and is flushed by wastewater, so that particles adhered to the surface of the filler particle layer 114 are separated from the filler particle layer 114, the surface of the filler particle layer 114 is clean, the floating ball filler can be fully contacted with ozone, and the generation efficiency of hydroxyl free radicals is ensured. In addition, the floating ball filler and the ozone are mixed in the water inlet pipe 109, so that the reaction time of the floating ball filler and the ozone can be prolonged, and meanwhile, the reaction time of hydroxyl radicals and organic matters can be prolonged, and the ozone is fully decomposed to generate the hydroxyl radicals.

The water collecting tank 119 is used for collecting water discharged by the ozone treatment tank 108, a small amount of small particle suspended matters are contained in the water after treatment, a vertical second partition plate 137 is arranged in the water collecting tank 119, the inner cavity of the water collecting tank 119 is divided into a water collecting cavity and a percolation cavity by the second partition plate 137, the water collecting cavity is positioned below the water filtering tank 117, a communication space is reserved between the bottom of the second partition plate 137 and the bottom wall of the water collecting tank 119, a quartz sand filtering layer 138 is arranged in the percolation cavity, and an overflow water outlet tank 139 is arranged above the quartz sand filtering layer 138. After flowing into the water collecting cavity, the water enters the infiltration cavity from the bottom of the water collecting cavity, then flows upwards through the quartz sand filtering layer 138, and the quartz sand filtering layer 138 can filter the water again to remove suspended matters, sludge and other components in the water. Finally, the water above the quartz sand filter layer 138 overflows to the water filter tank 117 and is discharged.

The quartz sand filter layer 138 is easy to be blocked, a back flush pipe network 140 is arranged above the quartz sand filter layer 138 for facilitating blocking removal, the back flush pipe network 140 is connected with a water source, a back flush pump is arranged on the back flush pipe network 140, water is sprayed to the quartz sand filter layer 138 by the back flush pipe network 140 at intervals, the quartz sand filter layer 138 is washed, and impurities in the quartz sand filter layer 138 are removed. The bottom of the infiltration chamber may also be provided with a sludge discharge mechanism for discharging sludge.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Plant's effluent disposal system, including equalizing basin (101), filtering pond (102), air supporting pond (103), anaerobism pond (104), sedimentation tank (105), aeration tank (106) and good oxygen pond (107) that connect gradually through the pipeline, its characterized in that: the device is characterized in that the aerobic tank (107) is connected with an ozone treatment tank (108), a water inlet pipe (109) and an air inlet pipe (110) are arranged at the bottom of the ozone treatment tank (108), one end of the air inlet pipe (110) is communicated with the water inlet pipe (109), and the other end of the air inlet pipe is connected with an ozone source (111); a water inlet pump (112) is arranged on the water inlet pipe (109), and the water inlet pipe (109) is connected with the aerobic tank (107); a plurality of floating ball fillers are arranged in the ozone treatment tank (108), the floating ball fillers comprise an inner hollow ball (113), a filler particle layer (114) and an outer net shell (115) which are sequentially arranged from inside to outside, and the density of the floating ball fillers is less than that of water; the upper portion of ozone treatment jar (108) is provided with delivery port (116), delivery port (116) are connected with slope drainage groove (117), the lower extreme of drainage groove (117) is provided with collects storehouse (118), the lower extreme and the inlet tube (109) intercommunication of collection storehouse (118), the below of drainage groove (117) is provided with catch basin (119).

2. The farm wastewater treatment system of claim 1, wherein: the bottoms of the regulating tank (101), the filter tank (102), the sedimentation tank (105), the anaerobic tank (104) and the aerobic tank (107) are provided with a sludge discharge mechanism.

3. The farm wastewater treatment system of claim 1, wherein: a filter plate (120) is arranged above the regulating tank (101).

4. The farm wastewater treatment system of claim 1, wherein: be provided with support rail (121) in filtering pond (102), be provided with first filter tank (122) and second filter tank (123) on support rail (121), first filter tank (122) and second filter tank (123) cooperate with support rail (121), first filter tank (122) and second filter tank (123) all are connected with first actuating mechanism (124).

5. The farm wastewater treatment system of claim 1, wherein: the bottom of the air floatation tank (103) is provided with an air supply mechanism (125), the upper part of the air floatation tank (103) is provided with a slag scraping mechanism, the slag scraping mechanism comprises a conveying belt (126), a driving shaft (129), a driven shaft (130), a guide shaft (131) and a semicircular baffle cover (128), the driving shaft (129) and the driven shaft (130) are positioned at the same height, the guide shaft (131) is arranged above the driven shaft (130), the conveying belt (126) is arranged on the driving shaft (129), the driven shaft (130) and the guide shaft (131), the conveying belt (126) is distributed in an obtuse triangle manner, the conveying belt (126) between the driving shaft (129) and the driven shaft (130) is a horizontal slag scraping section, the conveying belt (126) between the driven shaft (130) and the guide shaft (131) is an inclined conveying section, and the conveying belt (126) between the guide shaft (131) and the driving shaft (129) is an inclined slag removing section; the surface of the conveying belt (126) is provided with a slag scraping plate (127) perpendicular to the conveying belt (126), the blocking cover (128) is arranged outside the driving shaft (129), the blocking cover (128) is coaxial with the driven shaft (130), and when the slag scraping plate (127) passes through the blocking cover (128), the side edge of the slag scraping plate (127) is in sliding fit with the blocking cover (128); the slag collecting groove (132) is arranged below the deslagging section, the vibrating block (133) is arranged above the deslagging section, and the vibrating block (133) is connected with a second driving mechanism (134) for driving the vibrating block (133) to knock the deslagging section.

6. The farm wastewater treatment system of claim 5, wherein: the second driving mechanism (134) is an air cylinder.

7. The farm wastewater treatment system of claim 1, wherein: microbial fillers (135) are suspended in the anaerobic tank (104) and the aerobic tank (107).

8. The farm wastewater treatment system of claim 1, wherein: a plurality of vertical first partition plates (136) are arranged in the sedimentation tank (105), and the inner cavity of the sedimentation tank (105) is divided into S-shaped flow channels by the plurality of vertical first partition plates (136).

9. The farm wastewater treatment system of claim 1, wherein: be provided with vertical second baffle (137) in catch basin (119), second baffle (137) are separated catch basin (119) inner chamber into water collecting chamber and infiltration chamber, water collecting chamber is located the below of drainage tank (117), just have the intercommunication interval between the diapire of bottom and catch basin (119) of second baffle (137), infiltration intracavity is provided with quartz sand filter layer (138), the top of quartz sand filter layer (138) is provided with overflow play basin (139).

10. The farm wastewater treatment system of claim 9, wherein: a back flushing pipe network (140) is arranged above the quartz sand filtering layer (138).