CN114380452B - Sewage treatment equipment - Google Patents
Sewage treatment equipment Download PDFInfo
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- CN114380452B CN114380452B CN202011067401.0A CN202011067401A CN114380452B CN 114380452 B CN114380452 B CN 114380452B CN 202011067401 A CN202011067401 A CN 202011067401A CN 114380452 B CN114380452 B CN 114380452B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses sewage treatment equipment, which belongs to the technical field of aquaculture water treatment, and comprises a separation assembly and an air floatation assembly, wherein the air floatation assembly is communicated with the separation assembly through a water inlet and a water outlet pipe, the water outlet of the air floatation assembly is communicated with an aquaculture pond through the water inlet and the water outlet pipe, the air floatation assembly comprises an air floatation base member, a hollow inner cavity is arranged on the air floatation base member, a foam discharging pipe communicated with the hollow inner cavity is arranged on the upper part of the air floatation base member, a water outlet pipe communicated with the hollow inner cavity is arranged at the bottom of the air floatation base member, a vertically arranged motor stirring shaft is arranged in the hollow inner cavity, stirring assemblies are uniformly distributed on the motor stirring shaft, and an inflow assembly is arranged at the bottom of the air floatation base member and used for conveying liquid and gas into the hollow inner cavity of a tank. The cultivation wastewater is purified and the water resource is recycled, the purification cost is reduced, and the water treatment capacity is high.
Description
Technical Field
The invention belongs to the technical field of aquaculture water treatment, and particularly relates to sewage treatment equipment.
Background
In recent years, along with the improvement of the living standard of people, the demands of aquatic products rich in high-quality proteins, amino acids, vitamins and other rich nutrition are continuously improved, the output of aquatic products in China continuously and rapidly increases, the problem of domestic aquatic product supply is successfully solved, and the aquatic products are in the world for 20 years continuously. However, the fishing is excessive for a long time, the natural fishing amount of aquatic products in China is close to the ecological limit, the tendency of gradual decline is presented in recent years, and meanwhile, the tendency of miniaturization, benthonic and low-value of fishing products is obvious. Aquaculture thus begins to play an increasingly important role in the supply of aquaculture products. However, a large amount of solid waste such as residual baits, feces, secretions, corpses and the like is generated in the cultivation process, the large-scale form of the cultivation wastewater is used for water resources once, a large amount of water resources are wasted, and environmental pollution is increased, so that water quality pollution and good water resource shortage become one of important factors influencing the development of the aquaculture industry in China, and the defects of high cost, low popularization rate and small water treatment capacity are caused by purifying and recycling the cultivation wastewater in the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides sewage treatment equipment for purifying a circulating aquaculture water body and recycling water resources.
The technical scheme adopted by the invention for achieving the purpose is as follows: a sewage treatment device, which comprises a sewage treatment device,
a separation assembly for primarily separating the water discharged from the culture pond,
the air floatation assembly is communicated with the separation assembly through a water inlet and a water outlet pipe, the water outlet of the air floatation assembly is communicated with the culture pond through the water inlet and the water outlet pipe,
the air floatation assembly comprises an air floatation base member, the air floatation base member is provided with a hollow inner cavity, a foam discharging pipe communicated with the hollow inner cavity is arranged on the upper portion of the air floatation base member, a water outlet pipe communicated with the hollow inner cavity is arranged at the bottom of the air floatation base member, a motor stirring shaft which is vertically arranged is arranged in the hollow inner cavity, the motor stirring shaft is driven to rotate by a driving motor arranged at the upper end of the air floatation base member, the motor stirring shaft is provided with a stirring assembly, the stirring assembly comprises a sixth stirring rotating shaft which is connected with the side of the motor stirring shaft in a surrounding manner, a seventh stirring blade which can synchronously rotate along with the sixth stirring rotating shaft is connected with the side of the sixth stirring rotating shaft, an annular convex arc-shaped surface is arranged on the motor stirring rotating shaft in a surrounding manner, a first stirring plate body which is arranged between the annular convex body and the sixth stirring rotating shaft, an auxiliary ball which can rotate is in a embedding manner on the first stirring plate body, the auxiliary stirring shaft which can rotate is arranged on the fourth stirring plate body, the auxiliary ball which can be connected with the fourth stirring shaft in a coaxial manner, the auxiliary stirring shaft can be connected with the fourth stirring shaft through a fourth stirring shaft, and the auxiliary stirring shaft which can be connected with the fourth stirring shaft through the fourth stirring shaft.
Wherein, the air supporting base member bottom is equipped with inflow subassembly for the case cavity inner chamber sends into liquid and gas.
The invention purifies the culture water body to realize the recycling of the culture water body so as to reduce water resources used for culture, utilizes the separation assembly to carry out primary filtration treatment on large-particle pollutants in the culture water body, can relatively improve the efficiency of the water body for filtering the large-particle pollutants in the subsequent water treatment environment, further improves the water body treatment capacity, sends the primarily filtered water body into the air floatation assembly, separates the foam layer from the sewage by sending a large amount of gas into the sewage to form the foam layer, thereby removing the surfactant, organic matters and suspended matters in the sewage together by utilizing the surface adsorption principle, particularly controlling or removing the content of fine particles (less than or equal to 60 mu m) in the culture sewage, realizes the purification of the culture sewage, and improves the mixing effect of bubbles in the water body and the particles in the sewage, the scheme of arranging the motor stirring shaft driven by the driving motor to rotate in the air floatation base member is used for improving the contact of bubbles in water with micro solid particles in water and the like, specifically, the sewage at the bottom in the air floatation base member enters and is fed with a large amount of gas, the raising speed of the culture sewage is faster under the action of the gas, the motor stirring shaft rotates to drive the culture sewage to rotate in the air floatation base member and stir the culture sewage, the raising speed of the culture sewage in the air floatation assembly is slowed down, the water conservancy residence time is prolonged, the contact time and the contact quantity of bubbles in water and particles in water are improved, the raising flow of the culture sewage can form a certain driving force on the seventh stirring blade, the sixth stirring rotating shaft can be driven to rotate along with the driving force, the second stirring connecting rod between the two auxiliary gases is driven to form up-down displacement, the up-and-down displacement of the second stirring connecting rods at two sides in the process can drive the first stirring plate body to form relative up-and-down swinging relative to the annular convex body, so that the stirring angle of the seventh stirring blade can be automatically adjusted according to the rising speed of the water body in the water body stirring process to promote the water body stirring effect, the contact of micro particles and water body bubbles is promoted, the seventh stirring blade drives the first stirring plate body to swing up and down when adjusting the stirring angle of the seventh stirring blade to enable part of the water body to flow back downwards to slow down the rising speed of the fluid, secondary stirring is formed, the seventh stirring blade is beneficial to cutting bubbles in the water body for multiple times to form more micro bubbles, the micro bubbles are beneficial to adsorbing substances in more water bodies, and the micro bubbles obtained by cutting bubbles in the water body for multiple times are beneficial to reduce the trend of the surface energy of the micro bubbles, and the contact time and the contact quantity of the bubbles in the water and the particles in the water are ensured.
Preferably, the inflow assembly includes:
a cavity is arranged in the second guide body, the upper end of the second guide body is connected with an outflow base member communicated with the cavity inside the second guide body,
the third diversion body is arranged in the cavity of the second diversion body, the third diversion body is arranged in a hollow way, the upper end of the outer side of the third diversion body is connected with the upper wall in the cavity of the second diversion body through the first diversion body, the first diversion body is sleeve-shaped, the side surface of the first diversion body is provided with a first diversion hole in a surrounding way, the side surface of the third diversion body is provided with a first outflow through hole in a surrounding way,
the bottom surface of the third flow guiding body is the same plane with the inner bottom surface of the second flow guiding body cavity, a third flow guiding inlet for feeding liquid and gas into the third flow guiding body is formed in the bottom of the second flow guiding body, a third floating ball corresponding to the first flow outlet through hole is arranged on the outer side of the first flow outlet through hole, third fixing blocks are respectively arranged at the upper end and the lower end of the outer side of the third flow guiding body, and the third fixing blocks are connected with the third floating ball through third elastic ropes. The air floatation base member is provided with a flow inlet assembly at the bottom to initially mix the fed air with the culture sewage, specifically, the culture sewage and other air firstly enter a third guide body, the culture sewage and the air are mixed in the third guide body, the top of the third guide body is provided with an arc surface structure, the fed air and water flow to the two sides of the third guide body through the arc surface of the fluid flow in the mixing direction until the first outflow through hole flows to the space between the inner wall of the second guide body and the outer wall of the third guide body, the air-liquid mixing effect is improved in the space again through air-liquid mixing, the mixed air-liquid is discharged from the direction of the flow base member through the first flow guide hole on the first guide body, the air-liquid mixing time and effect are increased through the flowing of the air-liquid through the above-mentioned flow path, compared with the mode of directly feeding the culture sewage, the invention fully mixes other gases into the water body through preliminary mixing, solves the problems of decontamination effect reduction and energy waste caused by the fact that the gases directly fed into the aquaculture sewage quickly escape from bottom to top, and the scheme of gas-liquid mixing provided by the scheme of the invention increases the internal pressure of the inflow assembly while the gases and the liquids are primarily mixed in the inflow assembly, has the effect of reducing the survival rate of organisms such as bacteria possibly existing in the aquaculture sewage, forms gap blocking on the first outlet through hole in a mode of arranging the third floating ball outside the first outflow hole, pushes the third floating ball to displace and flows out from the gap between the third floating ball and the first outflow hole when the internal pressure of the third flow guide reaches a certain range to ensure the gas-liquid mixing and the internal pressure of the third flow guide body, and the third fluid guide body flows out of the gas-liquid mixture along the side surface of the third fluid guide body, so that a flow path which surrounds the third fluid guide body and flows upwards is formed, the mixing effect is improved, the surface of the inner part of the inflow assembly is cleaned, and the adhesion of particles or organisms is prevented.
Preferably, the third diversion inlet is provided with an inflow base piece, the inflow base piece comprises,
an air inlet branch pipe is arranged on the air inlet pipe,
the inflow body is columnar, a first inflow channel, a second inflow channel and a third inflow channel which are coaxial with the inflow body are arranged in the middle of the inflow body,
the first inflow channel is arranged at one end of the inflow body, the third inflow channel is arranged at the other end of the inflow body, the first inflow channel and the third diversion inlet direction are correspondingly arranged, the second inflow channel is arranged between the first inflow channel and the third inflow channel, the inlet diameter of the third inflow channel is gradually reduced to the outlet straight line from the second inflow channel direction, the inlet diameter of the first inflow channel is gradually expanded to the outlet straight line from the third diversion inlet direction, and the air inlet branch pipe is communicated with the first inflow channel. The air outlet direction of the air inlet branch pipe and the axis of the first air inlet channel have an included angle, and the two sides of the air inlet body are symmetrically provided with the air inlet branch pipes. The method is characterized in that the third diversion inlet is provided with a flow inlet base member, so that the culture sewage and gas enter the third diversion inlet together, a first flow inlet channel, a second flow inlet channel and a third flow inlet channel which are respectively arranged on the flow inlet base member limit the flow area of each flow inlet channel, the third flow inlet channel enters the water body, after the water pressure rises and passes through the second flow inlet channel in a state that the flow cross section of the water body is gradually reduced, the culture sewage flow rate and the flow diffusion area of the culture sewage passing through the third flow inlet are released and lifted in the first flow inlet channel, the mixing effect of the culture sewage and the gas is improved, meanwhile, inlet branch pipes are arranged on two sides of the flow inlet body, the staggered inlet is realized, so that the water inflow flow speed of the culture sewage is reduced due to the fact that the gas is fed into the culture sewage is prevented from being directly impacted into the culture sewage in a soft mode, meanwhile, the staggered inlet is favorable for driving the culture sewage to flow along the wall surface of the first flow inlet channel to improve the flow area of the culture sewage, the sewage adhered to the wall surface dirt in the culture sewage is more favorable for centrifugal flushing effect due to the fact that the air flow is more important to the staggered inlet sewage along the wall surface of the first flow channel.
As the preferred of this scheme, the base member of flowing out includes the siphunculus that flows out of the cavity intercommunication with the second baffle, the last port of siphunculus of flowing out is connected with the first filter screen that flows out that can form the evagination cambered surface, it is connected with two at least coaxial current limiting plectates to flow out the siphunculus outside, be connected with the current limiting backup pad parallel with the siphunculus axis of flowing out between the current limiting plectate, the first through-hole that flows out has been seted up on the siphunculus that flows out between the current limiting plectate. The first outflow through hole and the first outflow filter screen that are equipped with the outflow base member and make the breed sewage after the gas-liquid mixing follow outflow siphunculus side respectively and flow out respectively and do benefit to the formation in a large number of bubbles in the water, wherein the bubble in the fluid through the first outflow filter screen can form less bubble and do benefit to the absorption of miniature particulate matter through the filter screen cutting, the breed sewage that flows from first outflow through hole cooperates the breed sewage that first outflow filter screen flows out to realize diversified play water, compare in the direct mode of going out water upwards, this invention provides the multipath and goes out and be favorable to avoiding the problem that the too short filth purifying effect of air supporting base member breed sewage hydraulic retention time reduces to appear.
As the preferred scheme of this scheme, peg graft in the foam discharging pipe has the supplementary cover of foam discharging, foam discharging is assisted the cover and is offered for cylindric middle part and is coaxial through-hole rather than the axis, foam discharging is assisted the cover outside and is encircled and lay the internal groove I rather than the axis parallel, foam discharging is assisted the cover inboard and is encircled and is laid the internal groove II rather than the axis parallel, internal groove I and internal groove II are crisscross to be laid. The foam formed at the upper part of the air floatation base member is discharged outwards through the foam discharging pipe to separate dirt in the aquaculture sewage, especially micro particles, the foam discharging auxiliary sleeve is arranged in the foam discharging pipe, the side face structure of the foam discharging auxiliary sleeve is utilized to form a crushing effect on the foam entering the foam discharging pipe so as to obtain a better flowing effect in the foam discharging pipe, the problem that the foam discharging speed is lower due to the fact that more foam moves slowly in the foam discharging pipe is avoided, the foam entering the foam discharging pipe is limited by the space formed by the inner side structure and the outer side structure of the foam discharging auxiliary sleeve, the foam cracking probability is enlarged, the impact of the foam after the foam cracking can influence the foam nearby the foam, and thus the foam releasing flowing space is beneficial to quickening the discharge of dirt.
As the scheme is preferable, the first inner groove at the outer side of the foam discharging auxiliary sleeve is internally provided with the condensation circulating pipe, the condensation circulating pipe is connected with the condenser, the condenser is respectively connected with the condensation circulating pipes at the two ends of the foam discharging auxiliary sleeve, the breaking speed of foam near the foam discharging auxiliary sleeve is further accelerated and the dispersion of dirt is reduced in a mode of arranging the condensation circulating pipe, the adhesion effect of the dirt on the foam discharging auxiliary sleeve and the foam discharging pipe is reduced, the residue is avoided, and more importantly, the odor concentration of the dirt discharged from the foam discharging pipe is effectively reduced by utilizing a low-temperature environment.
As the scheme is preferable, the air floatation assembly is connected with the air pump through the air inlet and outlet pipe, the air pump is also communicated with the culture pond through the air inlet and outlet pipe, and the air inlet and outlet pipe connected with the air floatation assembly is provided with a first flowmeter. External air is sent into the air inlet and outlet pipe through the air pump and is respectively sent into the air floatation assembly and the culture pond, so that the sewage is discharged and purified, the oxygen content required by the culture is increased in the culture pond, and the air pump is monitored in a mode of setting a first flowmeter at best.
As the scheme is preferable, the air floatation assembly is connected with the water inlet and outlet pipe connected with the culture pond, the water inlet and outlet pipe is also connected with the biological purification pond through a branch pipe, the branch pipe is provided with a control valve, the biological purification pond is used for culturing algae, the culture density is 0.75kg-1.2 kg/square meter, the culture density reaches the upper limit, and 1/3-1/2 of the culture density is harvested. The algae are: gracilaria verrucosa and Gracilaria tenuifolia branch-propagation varieties (Gracilaria tenuistipitata liu). The gracilaria tenuifolia is mainly grown in summer and autumn, and gracilaria tenuifolia branch propagation varieties are mainly grown in winter and spring, have complementarity in time, and can be combined to form uninterrupted cultivation all year round. According to the invention, the culture sewage is purified by the gracilaria, organic matters in the water body are absorbed, the algae is utilized to reduce solid particles with the particle size smaller than 60 mu m in the water body, the dissolved oxygen concentration in the water body in the biological purification tank can be improved by photosynthesis for the algae, so that the growth of organisms in the culture tank is facilitated, the harvested gracilaria can be used as a feed auxiliary material to be added into feed or be eaten by other cultures, such as ducks in a farm or shellfish in the culture tank, the culture cost is reduced, and compared with the mode of mixedly culturing the gracilaria and the cultures in the culture tank, the gracilaria is separated from the cultures in the culture tank, the purification treatment effect of the culture sewage is facilitated to be improved by rapid culture of the gracilaria, the harvesting yield of the gracilaria can be improved, and the gracilaria can be used as feed to reduce the culture cost.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problems of high cost, low popularity and small water treatment capacity of the prior art by purifying the cultivation wastewater and recycling the water resource.
Drawings
FIG. 1 is a schematic diagram of a treatment process of circulating aquaculture wastewater according to the present invention;
FIG. 2 is a schematic view of a sewage treatment arrangement according to the present invention;
FIG. 3 is a schematic view of the interior of the air bearing assembly of the present invention;
FIG. 4 is a schematic view of the interior of the inflow assembly of the present invention;
FIG. 5 is a cross-sectional view of an inlet base member of the present invention;
FIG. 6 is a schematic view of the inside of the second and third fluid guides according to the present invention;
FIG. 7 is a schematic view of the outer structure of a third fluid guide body according to the present invention;
FIG. 8 is a schematic view of an outflow base member according to the present invention;
FIG. 9 is a schematic view of the interior of a froth removal pipe according to the invention;
FIG. 10 is a side view of the foam discharging auxiliary sleeve of the present invention in a foam discharging pipe;
FIG. 11 is a schematic view of a stirring assembly according to the present invention;
FIG. 12 is a schematic view of the internal structure of the separation assembly of the present invention;
FIG. 13 is a schematic view of a split sleeve according to the present invention;
FIG. 14 is a top view of a split sleeve of the present invention;
fig. 15 is a schematic view of a baffle structure according to the present invention.
Reference numerals: 100-a culture pond; 200-a biological purification tank; 10-an air floatation assembly; 11-an air bearing base; 12-driving a motor; 13-a stirring assembly; 131-a first stirring plate body; 132-auxiliary sphere; 133-a second stirring connection rod; 134-a third stirring limit sleeve; 135-fourth stirring rotation shaft; 136-a fifth stirring rotation shaft; 137-sixth stirring rotation shaft; 138-seventh stirring blade; 139-annular bulge; 14-a water outlet pipe; 15-a foam discharging pipe; 16-a motor stirring shaft; 20-a separation assembly; 21-separating the box body; 22-a settling chamber; 23-a sewage disposal chamber; 24-separation chamber; 25-separating the support plate; 26-separating the sleeve; 261-a current limiting arcuate plate; 27-overflow pipe body; 28-a flushing water pump; 29-isolating plate body; 40-an air inlet and outlet pipe; 41-a first flowmeter; 50-water inlet and outlet pipes; a 60-condenser; 61-a foam removal auxiliary sleeve; 62-condensing circulation pipes; 70-an inflow assembly; 71-outflow base; 711-outflow pipe; 712-a restrictor disk; 713-a flow-restricting support plate; 714-first outflow through hole; 715-a first outflow screen; 72-a first current carrier; 721-a first flow directing through hole; 73-a second current carrier; 731-a second diversion outlet; 732-a third diversion inlet; 74-a third current carrier; 741-a third flow-guiding through hole; 742-third float; 743-a third elastic cord; 744-third fixed block; 75-inflow base; 751-an inflow body; 752-an intake manifold; 753-a third inlet flow channel; 754-a first inlet flow channel; 755-a second inflow channel; 80-baffle; 81-a baffle connecting rod; 82-propeller blades.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the specific embodiments and the attached drawings:
example 1:
referring to fig. 1 to 11 of the drawings, a sewage treatment apparatus,
a separation assembly 20, the separation assembly 20 being used to initially separate the water from the lagoon 100,
the air floatation assembly 10, the air floatation assembly 10 is communicated with the separation assembly 20 through the water inlet and outlet pipe 50, the water outlet of the air floatation assembly 10 is communicated with the culture pond 100 through the water inlet and outlet pipe 50,
wherein the air floatation assembly 10 comprises an air floatation base member 11, the air floatation base member 11 is provided with a hollow inner cavity, the upper part of the air floatation base member 11 is provided with a foam discharging pipe 15 communicated with the hollow inner cavity, the bottom of the air floatation base member 11 is provided with a water outlet pipe 14 communicated with the hollow inner cavity, the hollow inner cavity is internally provided with a motor stirring shaft 16 which is vertically arranged, the motor stirring shaft 16 is driven to rotate by a driving motor 12 arranged at the upper end part of the air floatation base member 11, the motor stirring shafts 16 are provided with stirring assemblies 13, the stirring assemblies 13 comprise a sixth stirring rotating shaft 137 which is circumferentially connected with the side of the motor stirring shaft 16 and can rotate, the side of the sixth stirring rotating shaft 137 is connected with a seventh stirring blade 138 which can synchronously rotate along with the sixth stirring rotating shaft 137, the motor stirring rotating shaft 16 is circumferentially provided with an annular convex body 139 which has an outer convex arc surface, a first stirring plate body 131 which is arranged with the annular convex body 139 is arranged between the annular convex body 139 and the sixth stirring rotation shaft 137, the first stirring plate body 131 can rotate relative to the annular convex body 139, the first stirring plate body 131 is embedded with a rotatable auxiliary sphere 132, the sixth stirring rotation shaft 137 is embedded with a rotatable auxiliary sphere 132, the auxiliary sphere 132 embedded with the sixth stirring rotation shaft 137 is connected with the auxiliary sphere 132 embedded with the first stirring plate body 131 through a second stirring connecting rod 133, a fourth stirring rotation shaft 135 which is vertical to the axis thereof is arranged in the motor stirring rotation shaft 16, the fourth stirring rotation shaft 135 is coaxially connected with the sixth stirring rotation shaft 137 through a fifth stirring rotation shaft 136 with a coaxial line, the diameter of the fourth stirring rotation shaft 135 is larger than that of the fifth stirring rotation shaft 136, gaps remain between the fourth and fifth agitating rotation shafts 135 and 136 and the motor agitating rotation shaft 16.
Wherein, the bottom of the air floatation base member 11 is provided with an inflow component 70 for feeding liquid and gas into the hollow cavity of the tank.
The invention realizes the recycling of the aquaculture water to reduce the water resources used in aquaculture by purifying the aquaculture water, utilizes the separation assembly 20 to carry out primary filtration treatment on large-particle pollutants in the aquaculture water, can relatively improve the efficiency of the water for filtering the large-particle pollutants in the subsequent water treatment environment, further improves the water treatment capacity, sends the primarily filtered water into the air floatation assembly 10, separates the foam layer from the sewage by sending a large amount of gas into the sewage to form the foam layer by utilizing the surface adsorption principle, thereby removing the surfactant, organic matters and suspended matters in the sewage together, particularly controlling or removing the content of fine particles (less than or equal to 60 mu m) in the aquaculture sewage, realizes the purification of the aquaculture sewage, and improves the mixing effect of bubbles in the water and the particles in the sewage, the solution that the motor stirring shaft 16 driven to rotate by the driving motor 16 is arranged in the air floatation base member 11 to improve the contact of bubbles in water body and micro solid particles in water, in particular, the sewage at the bottom of the air floatation base member 11 enters and is fed with a large amount of gas, the raising speed of the culture sewage is faster under the action of the gas, the motor stirring shaft 16 rotates to drive the culture sewage to rotate in the air floatation base member 11 and stir the culture sewage, the raising speed of the culture sewage in the air floatation assembly 10 is slowed down, the water conservancy residence time is increased, the contact time and the contact quantity of bubbles in water and particles in water are improved, the raising sewage can form a certain driving force on the seventh stirring blade 138, the second stirring connecting rod 133 between the two auxiliary gases 132 is driven to form up-down displacement along with the driving of the sixth stirring rotating shaft 137, in this process, the up-and-down displacement of the second stirring connecting rods 133 at two sides can drive the first stirring plate 131 to swing up and down relatively to the annular convex body 139, so that the seventh stirring blade 138 can automatically adjust the stirring angle of the blade according to the rising speed of the water body in the process of stirring the water body to promote the stirring effect of the water body, and promote the contact between micro particles and water bubbles, while the seventh stirring blade 138 drives the first stirring plate 131 to swing up and down to enable part of the water body to flow back down to slow down the rising speed of the fluid and form secondary stirring, which is beneficial to the seventh stirring blade 138 to cut bubbles in the water body for multiple times to form more micro bubbles, which is beneficial to absorbing substances in more water bodies, and the micro bubbles obtained by cutting bubbles in the water body for multiple times are beneficial to reduce the trend of the surface energy of the micro bubbles in the water body, so that the contact time and the contact quantity of the bubbles in the water and the particles in the water are ensured.
The inflow assembly 70 includes:
a second current guiding body 73, wherein a cavity is arranged in the second current guiding body 73, the upper end of the second current guiding body 73 is connected with an outflow base 71 communicated with the cavity inside the second current guiding body,
a third current carrier 74, the third current carrier 74 is arranged in the cavity of the second current carrier 73, the third current carrier 74 is arranged in the cavity, the upper end of the outer side of the third current carrier 74 is connected with the upper wall in the cavity of the second current carrier 73 through a first current carrier 72, the first current carrier 72 is sleeve-shaped, the side surface of the first current carrier 72 is provided with a first current carrier 721 in a surrounding way, the side surface of the third current carrier 74 is provided with a first current carrier 741 in a surrounding way,
the bottom surface of the third flow guiding body 74 is in the same plane with the inner bottom surface of the cavity of the second flow guiding body 73, a third flow guiding inlet 732 for feeding liquid and gas into the third flow guiding body 74 is formed at the bottom of the second flow guiding body 73, a third floating ball 742 corresponding to the first flow outlet through hole 741 is arranged at the outer side of the first flow outlet through hole 741, third fixing blocks 744 are respectively arranged at the upper end and the lower end of the outer side of the third flow guiding body 74, and the third fixing blocks 744 are connected with the third floating ball 742 through third elastic ropes 743. The air floatation base member 11 is provided with the inflow assembly 70 at the bottom to mix the fed air with the culture sewage primarily, specifically, the culture sewage and other air firstly enter the third guide body 74, the culture sewage and the air are mixed in the third guide body 74, the top of the third guide body 74 is provided with an arc surface structure, the fed air and water body flow to the two sides of the third guide body 74 through the arc surface of the mixed upward fluid flow until the space of the inner wall of the second guide body 73 and the outer wall of the third guide body 74 flows at the first outflow through hole 741, the air-liquid mixing effect is improved in the space again through the air-liquid mixing, the mixed air-liquid is discharged out of the base member 71 through the first guide hole 721 on the first guide body 72, the air-liquid mixing time and effect are increased through the flowing of the air-liquid through the above-mentioned passage, the invention fully mixes other gases into the water body through preliminary mixing, solves the problems of decontamination effect reduction and energy waste caused by the fact that the gases directly fed into the aquaculture wastewater quickly escape from bottom to top, and the scheme of gas-liquid mixing provided by the scheme of the invention increases the internal pressure of the inflow assembly 70 while primary mixing of the gases and the liquids in the inflow assembly 70, has the effect of reducing the survival rate of organisms such as bacteria possibly existing in the aquaculture wastewater, wherein a gap blocking is formed on the first outlet through hole 741 in a mode of arranging the third floating ball 742 outside the first outlet hole 741, when the internal pressure of the third guide body 74 reaches a certain range, the gas-liquid mixture pushes the third floating ball 742 to displace and flow out from the gap between the third floating ball 742 and the first outlet hole 741 to ensure gas-liquid mixing and the internal pressure of the third guide body 74, and the outflow of the third flow conductor 74 from the gas-liquid mixture along the side thereof is advantageous in forming a flow path around the upward flow of the third flow conductor 74 to promote mixing and to clean the surfaces of the internal components of the inflow assembly 70 and prevent the adhesion of particulate matter or organisms.
The third diversion inlet 732 is provided with an inflow base 75, the inflow base 75 comprises,
an air intake manifold 752 is provided with a plurality of air-intake branches,
the inflow body 751 is columnar, a first inflow channel 754, a second inflow channel 755 and a third inflow channel 753 which are coaxial with the inflow body 751 are arranged at the middle part,
the first inflow channel 754 is disposed at one end of the inflow body 751, the third inflow channel 753 is disposed at the other end of the inflow body 751, the first inflow channel 754 and the third diversion inlet 732 are disposed in a direction corresponding to each other, the second inflow channel 755 is disposed between the first inflow channel 754 and the third inflow channel 753, an inlet diameter of the third inflow channel 753 tapers from an outlet diameter to a direction of the second inflow channel 755, an inlet diameter of the first inflow channel 754 tapers from an outlet diameter to a direction of the third diversion inlet 732, and the air inlet branch 752 communicates with the first inflow channel 754. The air outlet direction of the air inlet branch 752 forms an included angle with the axis of the first air inlet channel 754, and the air inlet branch 752 is symmetrically arranged on two sides of the air inlet body 751. The third diversion inlet 732 is provided with the inlet base 75 to realize that the culture sewage and gas enter the third diversion inlet 732 together, the first inlet channel 754, the second inlet channel 755 and the third inlet channel 753 which are respectively arranged on the inlet base 75 limit the flow area of each inlet channel, so that the third inlet channel 753 enters the water body, after the water body passes through the second inlet channel 755 in a state that the flow cross section is gradually reduced, the flow speed and the flow diffusion area of the culture sewage which are released and lifted through the third inlet 732 in the first inlet channel 754 are beneficial to improving the mixing effect of the culture sewage and the fed gas, and meanwhile, the inlet branch pipes 752 are arranged on two sides of the inlet body 751 to realize that the inlet flow speed of the culture sewage is reduced due to the fact that the culture sewage is directly impacted by the gas is fed into the culture sewage, and meanwhile, the inlet flow of the staggered mode is beneficial to the fact that the fed gas drives the culture sewage to flow along the wall surface of the first inlet channel 754 to improve the flow area, and the inlet flow speed of the culture sewage is more beneficial to the centrifugal effect of the culture sewage which is adhered to the wall surface of the first inlet channel 754, so that the inlet flow of the mixed sewage and the mixed effect of the fed gas are more beneficial to the centrifugal sewage is formed along the wall surface of the inlet channel 754.
The outflow base 71 comprises an outflow pipe 711 communicated with the cavity of the second flow guiding body 73, a first outflow filter screen 715 capable of forming an outer convex cambered surface is connected to an upper port of the outflow pipe 711, at least two coaxial flow limiting circular plates 712 are connected to the outer side of the outflow pipe 711, a flow limiting support plate 713 parallel to the axis of the outflow pipe 711 is connected between the flow limiting circular plates 712, and a first outflow through hole 714 is formed in the outflow pipe 711 between the flow limiting circular plates 712. The first outflow through hole 714 and the first outflow filter screen 715 that are arranged on the outflow base member 71 and enable the mixed gas-liquid culture sewage to flow out from the side of the outflow through pipe 711 respectively and are beneficial to the formation of a large number of bubbles in the water body, wherein the bubbles in the fluid passing through the first outflow filter screen 715 can form smaller bubbles to be beneficial to the adsorption of micro-particles through the filter screen cutting, and the culture sewage flowing out from the first outflow through hole 714 is matched with the culture sewage flowing out from the first outflow filter screen 715 to realize multi-azimuth water outlet.
The foam discharging tube 15 is internally inserted with a foam discharging auxiliary sleeve 61, the middle of the foam discharging auxiliary sleeve 61 is cylindrical, a through hole coaxial with the axis of the foam discharging auxiliary sleeve 61 is formed in the middle of the foam discharging auxiliary sleeve, an inner groove I parallel to the axis of the foam discharging auxiliary sleeve 61 is circumferentially arranged on the outer side of the foam discharging auxiliary sleeve 61, an inner groove II parallel to the axis of the foam discharging auxiliary sleeve 61 is circumferentially arranged on the inner side of the foam discharging auxiliary sleeve, and the inner grooves I and the inner grooves II are alternately arranged. The foam formed at the upper part of the air floatation base member 11 is discharged outwards through the foam discharging pipe 15 to separate the dirt in the aquaculture sewage, especially micro particles, the foam discharging auxiliary sleeve 61 is arranged in the foam discharging pipe 15, the side surface structure of the foam discharging auxiliary sleeve 61 is utilized to form a crushing effect on the foam entering the foam discharging pipe 15 so as to obtain a better flowing effect in the foam discharging pipe 15, the problem that the foam discharging speed is lower due to the fact that more foam moves slowly in the foam discharging pipe 15 is avoided, the foam entering the foam discharging pipe 15 is limited by the space formed by the inner side structure and the outer side structure of the foam discharging auxiliary sleeve 61, the foam cracking probability is enlarged, and the impact after the foam cracking can influence the foam nearby the foam, so that the foam nearby the foam is beneficial to releasing the flowing space to accelerate the discharge of the dirt.
A condensation circulating pipe 62 is arranged in the first inner groove on the outer side of the foam discharging auxiliary sleeve 61, the condensation circulating pipe 62 is connected with a condenser 60, the condenser 60 is respectively connected with the condensation circulating pipes 62 on the two ends of the foam discharging auxiliary sleeve 61, the breaking speed of foam near the foam discharging auxiliary sleeve 61 is further accelerated and the dispersion of dirt is reduced by arranging the condensation circulating pipes 62, the adhesion effect of the dirt on the foam discharging auxiliary sleeve 61 and the foam discharging pipe 15 is reduced, residues are avoided, and more importantly, the odor concentration of the dirt discharged from the foam discharging pipe 15 is effectively reduced by utilizing a low-temperature environment.
The air floatation assembly 10 is connected with an air pump through an air inlet and outlet pipe 40, the air pump is also communicated with the culture pond 100 through the air inlet and outlet pipe 40, and a first flowmeter 41 is arranged on the air inlet and outlet pipe 40 connected with the air floatation assembly 10. External air is sent into the air inlet and outlet pipe 40 through the air pump 40 and is respectively sent into the air floatation assembly 10 and the culture pond 100, so that the sewage is discharged and purified, the oxygen content required by the culture is increased in the culture pond 100, and the maximum quantity of the air pump is monitored by arranging the first flowmeter 41.
The air floatation assembly 50 is connected with the water inlet and outlet pipe 50 connected with the culture pond 100, the water inlet and outlet pipe 50 is also connected with the biological purification pond 200 through a branch pipe, a control valve is arranged on the branch pipe, the biological purification pond 200 is used for culturing algae, the culture density is 0.75kg-1.2 kg/square meter, the culture density reaches the upper limit, and 1/3-1/2 is harvested. The algae are: gracilaria verrucosa and Gracilaria tenuifolia branch-propagation varieties (Gracilaria tenuistipitata liu). The gracilaria tenuifolia is mainly grown in summer and autumn, and gracilaria tenuifolia branch propagation varieties are mainly grown in winter and spring, have complementarity in time, and can be combined to form uninterrupted cultivation all year round. According to the invention, the culture sewage is purified by the gracilaria, organic matters in the water body are absorbed, the algae is utilized to reduce solid particles with the particle size smaller than 60 mu m in the water body, the dissolved oxygen concentration in the water body in the biological purification tank 200 can be improved by photosynthesis for the algae, so that the growth of organisms in the culture tank 100 is facilitated, the harvested gracilaria can be used as a feed auxiliary material to be added into the feed or be eaten by other cultures, such as ducks in a farm or shellfish in the culture tank, the culture cost is reduced, the gracilaria and the cultures in the culture tank 100 are separately cultured, the purification treatment effect of the gracilaria on the culture sewage is facilitated to be improved by rapid culture, the harvesting yield of the gracilaria can be improved, and the gracilaria can be used as the feed to reduce the culture cost compared with the mode of mixedly culturing the gracilaria and the cultures.
Example 2:
the embodiment further proposes the following scheme based on the embodiment 1: referring to fig. 12-15 of the specification, the separation assembly 20 includes a separation box 21, the separation box 21 is internally divided into a settling chamber 22 and a separation chamber 24 by a vertically arranged separation plate 29, a vertically arranged separation sleeve 26 is arranged in the separation chamber 24, the side of the bottom of the separation sleeve 26 is supported by a horizontally arranged separation support plate 25, the side of the separation support plate 25 is respectively connected with the inner wall of the separation box 21 and the separation plate 29, the bottom of the inner hole of the separation sleeve 26 is not supported by the separation support plate 25, a drain chamber 23 is formed by the lower part of the separation support plate 25 and the inner bottom surface of the separation chamber 24, the culture pond 100 discharges culture sewage into the inner side of the separation sleeve 26 of the separation chamber 24 through a water inlet and outlet pipe 50, the side of the separation sleeve 26 is circumferentially arranged with a water inlet and outlet Kong Tice outside the separation sleeve 26, and a flow limiting arc 261 is arranged on the side of the water inlet and outlet Kong Tice, and has a cambered surface structure, and the water flowing out of the water inlet and outlet is changed from the water inlet and outlet into outside flowing outwards. The separation assembly 20 is arranged to initially separate the culture sewage into and out of the sewage, such as separating the large objects like the excrement and the carcass of the culture sewage so as to facilitate the efficient treatment of the subsequent culture sewage, the water treatment amount is improved, the large particles and the dirt obtained by separation can be collected to be used as fertilizer, the recycling utilization of resources is realized, the culture sewage is specifically sent into the separation chamber 24 in the separation box 21 to intercept the large particles and the contaminant through the separation sleeve 26, the large particles and the contaminant are intercepted into the sewage discharge chamber 23, the dirt in the sewage discharge chamber 23 is extracted through the sewage suction pipeline in the later stage, the water obtained by separation enters the sedimentation chamber 22 and is sent into the air floatation assembly 10 for the subsequent treatment after being subjected to the sedimentation treatment, wherein the sewage which is sent into the separation chamber 24 is directly sent into the inner side of the separation cylinder 26, the water containing the large particles and the contaminant flows along the inner wall of the separation cylinder 26, the culture sewage flows along the outer side of the separation sleeve 26 in the flowing process, the discharged water flows along the outer side of the separation sleeve 26 under the limiting action of the flow limiting arc 261, the effective water is effectively prevented from flowing along the inner side of the separation sleeve 26 due to the baffle protection of the flow limiting arc 261, and the particles and the contaminant can be prevented from falling into the inner side of the separation sleeve 26 along the inner side of the separation sleeve 26 in the flowing process even if the large particles and the contaminant is directly polluted along the inner side of the separation sleeve.
The vertical axis rotating shaft can be arranged at the inner side of the separating chamber 24 and is coaxially arranged with the separating sleeve 26, the upper part of the rotating shaft is connected with the separating chamber 24 through a bearing, the bottom of the rotating shaft is arranged in the separating sleeve 26, the side surface of the rotating shaft is circumferentially provided with a blade plate, and the blade plate can be driven to rotate by the water sprayed out from the water outlet of the water inlet and outlet pipe 50 on the separating sleeve 26, so that the impact force of the culture sewage entering the inner side of the separating sleeve 26 can be reduced, and the separating sleeve 26 is prevented from being deformed due to the unchanged position of the impact point in the long-term use process.
The sedimentation chamber 22 is internally provided with a flow blocking member 80, the flow blocking member 80 comprises a flow blocking connecting rod 81 with an axis horizontally arranged, the flow blocking connecting rod 81 is connected with a separation plate body 29, a spiral blade 82 which is spirally arranged is arranged on the flow blocking connecting rod 81, the upper part of the separation plate body 29 is provided with an overflow pipe body 27 which is horizontally arranged, the overflow pipe body 27 is communicated with the separation chamber 24 and the sedimentation chamber 22, a pipe orifice of the overflow pipe body 27 is correspondingly arranged with the flow blocking member 80, the upper part of the overflow pipe body 27 is provided with a flow monitor, the upper part of the separation box body 21 is provided with a flushing water pump 28, the flushing water pump 28 is connected with the flow monitor, and the flushing water pump 28 is communicated with the sedimentation chamber 22 and the separation chamber 24 through water inlet and outlet pipes 50 respectively. The baffle 80 is configured to limit the linear flow distance of fluid entering the settling chamber 22 from the separation chamber 24, so as to avoid the fluid flowing directly to the direction of the water outlet, the propeller blade 82 of the baffle 80 can guide the water at the upper part of the settling chamber 22 to the lower part or delay the flow path of the water, which is favorable for settling of particles in water, and the overflow pipe 27 is provided with a flow monitor to monitor the flow of the water flowing through the overflow pipe 27, so that when the flow is too fast, the problem of blockage may exist, and the flushing water pump 28 is started to pump the cleaner water at the upper part of the settling chamber 22 to flush the internal components of the separation chamber 24, thereby reducing or solving the blockage phenomenon.
The invention has been described with particular embodiments incorporating details to facilitate the understanding of the principles of construction and operation of the invention. Reference herein to specific embodiments and details thereof is not intended to limit the scope of the claims appended hereto. It will be apparent to those skilled in the art that various modifications can be made in the selected embodiments for illustration without departing from the spirit and scope of the invention. In particular, it will be clear to one of ordinary skill in the art that the apparatus and method of the present invention may be implemented in several different ways and that they may have several different appearances.
Claims (6)
1. A sewage treatment device, which comprises a sewage treatment device,
a separation assembly for primarily separating the water discharged from the culture pond,
the air floatation assembly is communicated with the separation assembly through a water inlet and a water outlet pipe, the water outlet of the air floatation assembly is communicated with the culture pond through the water inlet and the water outlet pipe,
wherein the air floatation assembly comprises an air floatation base member, the air floatation base member is provided with a hollow inner cavity, the upper part of the air floatation base member is provided with a foam discharging pipe communicated with the hollow inner cavity, the bottom of the air floatation base member is provided with a water discharging pipe communicated with the hollow inner cavity, the hollow inner cavity is internally provided with a vertically arranged motor stirring shaft, the motor stirring shaft is driven to rotate by a driving motor arranged at the upper end part of the air floatation base member, the motor stirring shaft is provided with a stirring assembly, the stirring assembly comprises a sixth stirring rotating shaft which is connected in a surrounding manner and can rotate, the side surface of the sixth stirring rotating shaft is connected with a seventh stirring blade which can synchronously rotate along with the sixth stirring rotating shaft, the motor stirring shaft is provided with a circular convex arc surface in a surrounding manner, a first stirring plate body matched with the circular convex body is arranged between the circular convex body and the sixth stirring rotating shaft, the first stirring plate body can rotate relative to the circular convex body, an auxiliary ball which can rotate is embedded on the first stirring plate body, the sixth stirring shaft is connected with the auxiliary ball through an auxiliary stirring plate which can rotate on the auxiliary ball,
The bottom of the air floatation base member is provided with an inflow assembly for feeding liquid and gas into the hollow cavity;
the inflow assembly includes:
a cavity is arranged in the second guide body, the upper end of the second guide body is connected with an outflow base member communicated with the cavity inside the second guide body,
the third diversion body is arranged in the cavity of the second diversion body, the third diversion body is arranged in a hollow way, the upper end of the outer side of the third diversion body is connected with the upper wall in the cavity of the second diversion body through the first diversion body, the first diversion body is sleeve-shaped, the side surface of the first diversion body is provided with a first diversion hole in a surrounding way, the side surface of the third diversion body is provided with a first outflow through hole in a surrounding way,
the bottom surface of the third fluid director is the same plane with the inner bottom surface of the second fluid director cavity, the bottom of the second fluid director is provided with a third fluid director inlet for feeding liquid and gas into the third fluid director, the outer side of the first outflow through hole is provided with a third floating ball corresponding to the first outflow through hole, the upper end and the lower end of the outer side of the third fluid director are respectively provided with a third fixed block, and the third fixed blocks are connected with the third floating ball through a third elastic rope;
the gas-liquid mixture can push the third floating ball to displace and flow out from a gap between the third floating ball and the first outflow through hole, and the gas-liquid mixture flows out from the third fluid guide body along the side surface of the third fluid guide body, so that a flow path surrounding the third fluid guide body to flow upwards is formed to promote the gas-liquid mixing effect and clean the surfaces of the internal parts of the inflow assembly;
An inflow base member is arranged on the third diversion inlet, the inflow base member comprises,
an air inlet branch pipe is arranged on the air inlet pipe,
the inflow body is columnar, a first inflow channel, a second inflow channel and a third inflow channel which are coaxial with the inflow body are arranged in the middle of the inflow body,
the first inflow channel is arranged at one end of the inflow body, the third inflow channel is arranged at the other end of the inflow body, the first inflow channel and the third diversion inlet direction are correspondingly arranged, the second inflow channel is arranged between the first inflow channel and the third inflow channel, the inlet diameter of the third inflow channel is gradually reduced to the outlet straight direction from the second inflow channel direction, the inlet diameter of the first inflow channel is gradually expanded to the outlet straight direction from the third diversion inlet direction, and the air inlet branch pipe is communicated with the first inflow channel;
the inlet branch pipes are arranged on two sides of the inlet body to carry out staggered air inlet for preventing the inlet flow velocity of the aquaculture sewage from being reduced, and the staggered air inlet can flush the wall surface of the first inlet channel and enable the aquaculture sewage to flow along the wall surface of the first inlet channel to form a centrifugal effect.
2. A sewage treatment apparatus as claimed in claim 1, wherein: the outflow base piece comprises an outflow through pipe communicated with the cavity of the second current-conducting body, a first outflow filter screen capable of forming an outer convex cambered surface is connected to the upper port of the outflow through pipe, at least two coaxial current-limiting circular plates are connected to the outer side of the outflow through pipe, a current-limiting support plate parallel to the axis of the outflow through pipe is connected between the current-limiting circular plates, and a first outflow through hole is formed in the outflow through pipe between the current-limiting circular plates;
The separation assembly comprises a separation box body, a separation plate body which is arranged vertically in the separation box body divides a box body inner cavity of the separation box body into a settling chamber and a separation chamber, an overflow pipe body which is arranged horizontally is arranged on the upper portion of the separation plate body, a separation sleeve which is arranged vertically in an axis is arranged in the separation chamber, the side of the bottom of the separation sleeve is supported by a separation supporting plate which is arranged horizontally, the side of the separation supporting plate is respectively connected with the inner wall of the separation box body and the separation plate body, the bottom of an inner hole of the separation sleeve is not supported by the separation supporting plate, a sewage draining chamber is formed between the lower portion of the separation supporting plate and the inner bottom surface of the separation chamber, and the cultivation pond discharges cultivation sewage into the inner side of the separation sleeve of the separation chamber through a water inlet and outlet pipe, and the side of the separation sleeve is circumferentially arranged with a water inlet and outlet hole body.
3. A sewage treatment apparatus as claimed in claim 1 or 2, wherein: the foam discharging pipe is internally inserted with a foam discharging auxiliary sleeve, the middle part of the foam discharging auxiliary sleeve is cylindrical, a through hole coaxial with the axis of the foam discharging auxiliary sleeve is formed in the middle of the foam discharging auxiliary sleeve, the outer side of the foam discharging auxiliary sleeve is circumferentially provided with an inner groove I parallel to the axis of the foam discharging auxiliary sleeve, the inner side of the foam discharging auxiliary sleeve is circumferentially provided with an inner groove II parallel to the axis of the foam discharging auxiliary sleeve, and the inner groove I and the inner groove II are alternately arranged;
The foam discharging auxiliary sleeve can crush foam entering the foam discharging pipe.
4. A sewage treatment apparatus as claimed in claim 3, wherein: a condensation circulating pipe is arranged in the first inner groove at the outer side of the foam discharging auxiliary sleeve, the condensation circulating pipe is connected with a condenser, and the condenser is respectively connected with the condensation circulating pipes at the two ends of the foam discharging auxiliary sleeve.
5. A sewage treatment apparatus as claimed in claim 4, wherein: the air floatation assembly is connected with the air pump through the air inlet and outlet pipe, the air pump is also communicated with the culture pond through the air inlet and outlet pipe, and the air inlet and outlet pipe connected with the air floatation assembly is provided with a first flowmeter.
6. A sewage treatment apparatus as claimed in claim 5, wherein: the air floatation assembly is connected with a water inlet and outlet pipe connected with the culture pond through a branch pipe, the branch pipe is provided with a control valve, algae are cultured in the biological purification pond, the culture density is 0.75kg-1.2 kg/square meter, the culture density reaches the upper limit, and 1/3-1/2 of the culture density is harvested.
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