CN210419659U - Pond engineering recirculating aquaculture tail water centralized treatment system - Google Patents
Pond engineering recirculating aquaculture tail water centralized treatment system Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 218
- 238000009360 aquaculture Methods 0.000 title claims abstract description 32
- 244000144974 aquaculture Species 0.000 title claims abstract description 32
- 230000003134 recirculating effect Effects 0.000 title claims description 18
- 239000010865 sewage Substances 0.000 claims abstract description 168
- 238000004062 sedimentation Methods 0.000 claims abstract description 46
- 238000000926 separation method Methods 0.000 claims abstract description 30
- 238000009395 breeding Methods 0.000 claims abstract description 29
- 230000001488 breeding effect Effects 0.000 claims abstract description 29
- 238000012423 maintenance Methods 0.000 claims abstract description 20
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 239000008213 purified water Substances 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims description 35
- 241000196324 Embryophyta Species 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 16
- 239000011150 reinforced concrete Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 16
- 238000005273 aeration Methods 0.000 claims description 12
- 230000009286 beneficial effect Effects 0.000 claims description 9
- 241000234587 Canna Species 0.000 claims description 8
- 235000005273 Canna coccinea Nutrition 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 241000894006 Bacteria Species 0.000 claims description 7
- 241000195493 Cryptophyta Species 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 235000013399 edible fruits Nutrition 0.000 claims description 6
- 239000003337 fertilizer Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 241000219991 Lythraceae Species 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 4
- 238000006213 oxygenation reaction Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 10
- 239000012141 concentrate Substances 0.000 abstract description 3
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241001482311 Trionychidae Species 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- 244000045947 parasite Species 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a pond engineering circulating water aquaculture tail water centralized treatment system, which comprises a pond drainage system, a sedimentation tank, a primary sewage interception area, a secondary sewage interception area, a vertical ascending subsurface flow wetland, a horizontal flow wetland, a comprehensive planting and breeding area, a water source maintenance area, a water silt separation area and a pond; the pond drainage system is sequentially connected with the sedimentation tank, the primary sewage interception area, the secondary sewage interception area, the vertical upstream subsurface flow wetland and the horizontal flow wetland and is respectively used for purifying the culture tail water; the purified water enters the comprehensive planting and raising area from the horizontal flow wetland and then enters the water source maintenance area from the comprehensive planting and raising area, and the water source maintenance area provides a water source for the pond. The utility model provides a difficult problem of subregion pond culture tail water treatment, can concentrate purification treatment with the breed tail water in subregion pond, finally realize the circulation of breeding the tail water and recycle or discharge to reach standard.
Description
Technical Field
The utility model belongs to the technical field of water quality treatment, involve aquaculture water treatment field, concretely relates to pond engineering recirculating aquaculture tail water centralized processing's system.
Background
China is a big country for pond aquaculture, and with the continuous expansion of aquaculture areas, the tail water of pond aquaculture is discharged unqualifiedly, thus causing great harm to the environment. In recent years, the country increasingly pays more attention to the aspect of environmental protection, how to realize the purification and cyclic utilization and standard discharge of aquaculture tail water, and particularly the treatment of the tail water of the zonal pond culture is a problem which needs to be urgently solved.
The main problems in the prior art include:
(1) various kinds of feed, medicines and the like which are manually put in the breeding process are easy to breed various parasites, microorganisms, bacteria and the like, so that the water quality is deteriorated; in addition, sewage containing various heavy metal elements, pesticides and chemicals is often collected to a low pond through natural water, so that the water quality in the pond is seriously polluted.
(2) The conventional water body treatment device does not treat the culture tail water through measures such as natural precipitation, filtration and the like and then discharges the culture tail water back to the pond, so that zero discharge and cyclic utilization of the culture tail water are realized.
(3) The precipitation efficiency of the culture tail water is low, and different filter mediums are mixed with each other; the culture tail water contains a large amount of organic matters, is low in dissolved oxygen and smelly, and cannot be treated in time, so that the water quality index is reduced, and the culture process is influenced.
(4) The drinking water treatment mode has high water purification cost, weak pertinence and unsatisfactory purification effect on aquaculture.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, the utility model provides a pond engineering recirculating aquaculture tail water centralized processing's system has solved the difficult problem that the district ization pond aquaculture tail water was handled, can concentrate purification treatment with the aquaculture tail water in district pond, finally realizes the circulation reuse or the discharge to reach standard of aquaculture tail water.
Therefore, the utility model adopts the following technical scheme:
a system for centralized treatment of tail water of pond engineering recirculating aquaculture comprises a pond drainage system, a sedimentation tank, a primary sewage interception area, a secondary sewage interception area, a vertical upstream subsurface flow wetland, a horizontal flow wetland, a comprehensive planting and breeding area, a water source maintenance area, a water sludge separation area and a pond; the pond drainage system is connected with the sedimentation tank and is used for draining the culture tail water of the pond into the sedimentation tank; the sedimentation tank is connected with the first-stage sewage intercepting area, and water in the sedimentation tank is delivered to the first-stage sewage intercepting area through a water pump; the first-stage sewage interception area is respectively connected with the second-stage sewage interception area and the water-sludge separation area and is used for carrying out primary sewage interception and separation on the culture tail water; the second-stage sewage intercepting area is used for further intercepting and separating the culture tail water treated by the first-stage sewage intercepting area; the inlet of the vertical upward subsurface flow wetland is connected with the outlet of the secondary sewage intercepting area, and the inlet of the horizontal flow wetland is connected with the outlet of the vertical upward subsurface flow wetland and is respectively used for further purifying the culture tail water; the purified water enters the comprehensive planting and raising area from the horizontal flow wetland and then enters the water source maintenance area from the comprehensive planting and raising area, and the water source maintenance area provides a water source for the pond.
Preferably, the pond drainage system comprises a pond drainage gate, a drainage channel; the drainage gate is communicated with the pond and the drainage channel and is used for controlling water flow and water level; the depth of the drainage channel is lower than the bottom of the pond, a one thousandth gradient is arranged in the drainage direction, and the deeper end of the drainage channel is connected with the sedimentation tank.
Preferably, the water-sludge separation zone is used for carrying out secondary sedimentation on the sewage discharged from the primary sewage interception zone, supernatant after sedimentation flows back to the sedimentation tank, and sludge is used as fruit forest fertilizer; the effective volume of the sedimentation tank is one half of the volume of the water-sludge separation area, the effective volume is connected with the deeper end of the drainage channel, and the depth is consistent with that of the drainage channel.
Preferably, the first-stage sewage intercepting area comprises a first sewage intercepting pool, a sewage suction truck rail, a sewage discharge diversion trench and a first overflow pipe;
the length-width ratio of the first sewage interception tank is determined according to the actual field size, the first sewage interception tank is of a reinforced concrete structure and is flat-bottomed, and the effective depth is 2-4 m;
the sewage suction truck adopts automatic cruising bottom sewage suction and is used for collecting bottom sewage of a first-stage sewage interception area and flows to a water-sludge separation area through a sewage discharge diversion trench;
the width between two rails of the sewage suction truck is controlled to be 3-6 m, and besides the guide rails are erected on two sides of the pool, the guide rail in the middle of the pool is additionally fixed at the bottom to ensure the stability of the guide rail;
the sewage discharge diversion trench is erected on a guide rail of the first sewage interception tank and leads to the water-sludge separation area;
the first overflow pipe is positioned at the position of 10cm below the upper opening of the first sewage interception tank, the outer diameter of the first overflow pipe is 110cm, the first overflow pipe is arranged every 2.5m, and water flows to the secondary sewage interception area.
Preferably, the secondary sewage intercepting area comprises a second sewage intercepting pool, a biological brush, an aeration system and a second overflow pipe;
the length-width ratio of the second sewage intercepting pool is determined according to the actual size of the site, the second sewage intercepting pool is of a reinforced concrete structure and is flat-bottomed, the bottom of the second sewage intercepting pool is on the same horizontal plane with the first-stage sewage intercepting area, the overflow edge is 0.5m lower than that of the first-stage sewage intercepting area, and the other three edges of the second sewage intercepting pool are as deep as the first-stage sewage intercepting area;
the biological brushes are spaced by 0.5 meter and are distributed in the second sewage interception tank in a net shape;
the aeration system mainly comprises a blower, an aeration pipeline and a micropore oxygenation plate and is used for ensuring that dissolved oxygen in a water body is more than 5 mg/L;
the second overflow pipe is positioned at the position of 10cm below the upper opening of the second sewage interception tank, has the outer diameter of 110cm, is arranged every 2.5m, and flows to the vertical upward subsurface flow wetland.
Preferably, the vertical upflow subsurface wetland comprises a first tank body, a first substrate, a first plant and a pipeline;
the first tank body is of a reinforced concrete structure and is flat-bottomed, the effective depth of an overflow edge is 0.8m, and the water inlet edge is level with the overflow edge of the secondary sewage intercepting area and has the depth of 0.9 m; the rest two sides are 1m deep, and the design length-width ratio is controlled within 3: 1;
one end of each pipeline is connected to a second overflow pipe of the secondary sewage intercepting area, extends to the pool bottom along the pool wall, extends to the other pool wall along the pool bottom towards the water flow direction, the pipelines are parallel and have the interval of 2m, the tail end of each pipeline is closed, and a section close to the bottom is provided with a honeycomb pore;
the first substrate is cobblestones with the thickness of 30cm and the particle size of 30-50mm from the bottom layer to the upper layer in sequence; spherical activated carbon with the thickness of 10cm and the particle size of 3-5 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm; 10cm thick iron carbon with the grain diameter of 30-50 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm;
the first plant comprises canna, loosestrife and iris; the treated water overflows to the horizontal flow wetland from the upper port.
Preferably, the horizontal flow wetland comprises a second tank body, a second substrate and a second plant; the second pool body is of a reinforced concrete structure, a geomembrane is paved at the bottom of the second pool body and is leveled with the vertical upward subsurface flow wetland, the water inlet edge is leveled with the vertical upward subsurface flow wetland, the effective depth of the water outlet edge is 0.6m, and the other two edges are 10cm higher than the water inlet edge; the second substrate is 3-5cm of volcanic rock, and the second plant is canna; the treated water overflows to the comprehensive planting and breeding area.
Preferably, the comprehensive planting and breeding area is a shallow water area and a deep water area, the depth of the shallow water area is 1m, the shallow water area extends 10 m around one circumference of the pond to the center of the pond, and the shallow water area is used for planting submerged plants; the depth of the deep water area is 2-2.5m and is in the middle of the pond; the water source maintenance area is a pond water inlet channel which is matched with a bacteria and algae expanding culture barrel to periodically supplement beneficial microorganisms and beneficial phytoplankton.
Preferably, the system also comprises a water replenishing system and a waterlogging draining system; the water replenishing system is connected with a water source through a pump room and is used for replenishing water, and the replenished water enters the comprehensive planting and breeding area; the drainage system mainly comprises a drainage pump station and a pipeline and is used for discharging redundant water in the comprehensive planting and breeding area, and the discharged water is purified water reaching the standard.
Preferably, the tail water treatment area is arranged according to 5% -8% of the culture area, wherein the proportion of the sedimentation tank, the sewage interception area, the wet area, the comprehensive breeding area, the water source maintenance area and the water sludge separation area is about 1:18:25:40:15: 1.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the problem of district ization pond aquaculture tail water treatment is solved, can concentrate purification treatment with the aquaculture tail water in district pond, finally realize the circulation of aquaculture tail water and recycle or discharge to reach standard.
(2) The water body purification cost is low, the purification efficiency is high, and no secondary pollution is generated.
(3) The sludge part after water and sludge separation can be used for providing fertilizers for fruit forests, so that the resource integration and reutilization of the culture tail water are realized, and the method is favorable for saving energy and protecting the ecological environment.
(4) The tail water of the cultivation can be treated in time, the quantity of the supplementary water sources is reduced, the cultivation cost is saved, and the economic benefit is improved.
Drawings
Fig. 1 is a schematic structural composition diagram of a pond engineering recirculating aquaculture tail water centralized treatment system provided by the utility model.
Description of reference numerals: 1. a pond drainage system; 2. a sedimentation tank; 3. a first-stage sewage intercepting area; 4. a secondary sewage intercepting area; 5. a vertical up-flow subsurface wetland; 6. horizontal flow wetlands; 7. a comprehensive planting and breeding area; 8. a water source maintenance area; 9. a water-sludge separation zone; 10 ponds; 11. a water replenishing system; 12. and (4) a drainage system.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are only used for explaining the present invention, but not for limiting the present invention.
As shown in figure 1, the utility model discloses a pond engineering recirculating aquaculture tail water centralized treatment system, which comprises a pond drainage system 1, a sedimentation tank 2, a primary sewage interception area 3, a secondary sewage interception area 4, a vertical upstream subsurface flow wetland 5, a horizontal flow wetland 6, a comprehensive planting and breeding area 7, a water source maintenance area 8, a water-sludge separation area 9 and a pond 10; the pond drainage system 1 is connected with the sedimentation tank 2 and is used for draining the culture tail water of the pond 10 into the sedimentation tank 2; the sedimentation tank 2 is connected with the primary sewage intercepting area 3, and water in the sedimentation tank 2 is sent to the primary sewage intercepting area 3 through a water pump; the first-stage sewage intercepting region 3 is respectively connected with the second-stage sewage intercepting region 4 and the water-sludge separating region 9 and is used for carrying out primary sewage intercepting separation on the culture tail water; the secondary sewage intercepting area 4 is used for further intercepting and separating the culture tail water treated by the primary sewage intercepting area 3; the inlet of the vertical upward subsurface flow wetland 5 is connected with the outlet of the secondary sewage intercepting area 4, and the inlet of the horizontal flow wetland 6 is connected with the outlet of the vertical upward subsurface flow wetland 5 and is respectively used for further purifying the culture tail water; the purified water enters the comprehensive planting and breeding area 7 from the horizontal flow wetland 6 and then enters the water source maintenance area 8 from the comprehensive planting and breeding area 7, and the water source maintenance area 8 provides water sources for the pond 10.
The pond drainage system 1 comprises a pond drainage gate and a drainage channel; the drainage gate is communicated with the pond 10 and the drainage channel and is used for controlling water flow and water level; the depth of the drainage channel is lower than the bottom of the pond 10, a one thousandth gradient is arranged towards the drainage direction, and the deeper end of the drainage channel is connected with the sedimentation tank 2.
The water-sludge separation zone 9 is used for carrying out secondary sedimentation on the sewage discharged from the primary sewage intercepting zone 3, supernatant after sedimentation returns to the sedimentation tank 2, and sludge is used as a fruit forest fertilizer; the effective volume of the sedimentation tank 2 is one half of the volume of the water-sludge separation zone 9, and is connected with the deeper end of the drainage channel, and the depth is consistent with that of the drainage channel.
The first-stage sewage intercepting area 3 comprises a first sewage intercepting pool, a sewage suction truck rail, a sewage discharge diversion trench and a first overflow pipe;
the length-width ratio of the first sewage interception tank is determined according to the actual field size, the first sewage interception tank is of a reinforced concrete structure and is flat-bottomed, and the effective depth is 2-4 m;
the sewage suction truck adopts automatic cruising bottom sewage suction and is used for collecting bottom sewage of the primary sewage interception area 3 and flows to the water-sludge separation area 9 through the sewage discharge diversion trench;
the width between two rails of the sewage suction truck is controlled to be 3-6 m, and besides the guide rails are erected on two sides of the pool, the guide rail in the middle of the pool is additionally fixed at the bottom to ensure the stability of the guide rail;
the sewage discharge diversion trench is erected on a guide rail of the first sewage interception tank and leads to the water-sludge separation zone 9;
the first overflow pipe is positioned at the position of 10cm below the upper opening of the first sewage interception tank, the outer diameter of the first overflow pipe is 110cm, every 2.5m, and water flows to the secondary sewage interception area 4.
Wherein, the secondary sewage intercepting area 4 comprises a second sewage intercepting pool, a biological brush, an aeration system and a second overflow pipe;
the length-width ratio of the second sewage intercepting tank is determined according to the actual size of the site, the second sewage intercepting tank is of a reinforced concrete structure and is flat-bottomed, the bottom of the second sewage intercepting tank is on the same horizontal plane with the first-stage sewage intercepting area 3, the overflow edge is 0.5m lower than the first-stage sewage intercepting area 3, and the rest three edges are as deep as the first-stage sewage intercepting area 3;
the biological brushes are spaced by 0.5 meter and are distributed in the second sewage interception tank in a net shape;
the aeration system mainly comprises a blower, an aeration pipeline and a micropore oxygenation plate and is used for ensuring that dissolved oxygen in a water body is more than 5 mg/L;
the second overflow pipe is positioned at the position of 10cm below the upper opening of the second sewage interception tank, has the outer diameter of 110cm, is arranged every 2.5m, and flows to the vertical upward subsurface flow wetland 5.
Wherein the vertical upflow subsurface flow wet 5 comprises a first tank body, a first substrate, a first plant and a pipeline;
the first tank body is of a reinforced concrete structure and is flat-bottomed, the effective depth of an overflow edge is 0.8m, and the water inlet edge is flush with the overflow edge of the secondary sewage intercepting region 4 and has the depth of 0.9 m; the rest two sides are 1m deep, and the design length-width ratio is controlled within 3: 1;
one end of each pipeline is connected to a second overflow pipe of the secondary sewage intercepting area 4, the second overflow pipes extend to the pool bottom along the pool wall and extend to the other pool wall along the pool bottom in the water flow direction, the pipelines are parallel and spaced at intervals of 2m, the tail ends of the pipelines are closed, and a section close to the bottom is provided with a honeycomb pore;
the first substrate is cobblestones with the thickness of 30cm and the particle size of 30-50mm from the bottom layer to the upper layer in sequence; spherical activated carbon with the thickness of 10cm and the particle size of 3-5 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm; 10cm thick iron carbon with the grain diameter of 30-50 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm;
the first plant comprises canna, loosestrife and iris; the treated water overflows from the upper opening to the horizontal flow wetland 6.
The horizontal flow wetland 6 comprises a second tank body, a second substrate and a second plant; the second pool body is of a reinforced concrete structure, a geomembrane is paved at the bottom of the second pool body and is leveled with the vertical upstream subsurface flow wetland 5, the water inlet edge is leveled with the vertical upstream subsurface flow wetland 5, the effective depth of the water outlet edge is 0.6m, and the other two edges are 10cm higher than the water inlet edge; the second substrate is 3-5cm of volcanic rock, and the second plant is canna; the treated water overflows to the comprehensive planting and breeding area 7.
The comprehensive planting and breeding area 7 is divided into a shallow water area and a deep water area, the depth of the shallow water area is 1m, the shallow water area extends 10 meters around one circumference of the pond 10 to the center of the pond, and the shallow water area is used for planting submerged plants; the depth of the deep water area is 2-2.5m and is in the middle of the pond; the water source maintenance area 8 is a pond water inlet channel, is matched with a bacteria and algae expanding culture barrel, and periodically supplements beneficial microorganisms and beneficial phytoplankton.
Specifically, the system further comprises a water replenishing system 11 and a waterlogging draining system 12; the water supplementing system 11 is connected with a water source through a pump room and is used for supplementing water, and the supplemented water enters the comprehensive planting and breeding area 7; the drainage system 12 mainly comprises a drainage pump station and a pipeline and is used for discharging redundant water in the comprehensive planting and breeding area 7, and the discharged water is purified water reaching the standard.
The tail water treatment area is arranged according to 5% -8% of the culture area, wherein the proportion of the sedimentation tank, the sewage interception area, the wet area, the comprehensive breeding area, the water source maintenance area and the water sludge separation area is about 1:18:25:40:15: 1.
Examples
A pond engineering circulating water aquaculture tail water centralized treatment system comprises a pond drainage system 1, a sedimentation tank 2, a first-stage sewage intercepting area 3, a second-stage sewage intercepting area 4, a vertical upstream subsurface flow wetland 5, a horizontal flow wetland 6, a comprehensive planting and breeding area 7, a water source curing area 8, a water sludge separation area 9, a pond 10, a water supplementing system 11 and a drainage and waterlogging system 12.
The pond drainage system 1 comprises a pond drainage gate and a drainage channel; the drainage gate is communicated with the pond 10 and the drainage channel, and can control water flow and water level; the depth of the drainage channel is lower than the bottom of the pond 10, the drainage channel has a one thousandth gradient towards the drainage direction, and the deeper end of the drainage channel is connected with the sedimentation tank 2.
The effective volume of the sedimentation tank 2 is one half of the volume of the water-sludge separation zone 9, and is connected with the deep end of the drainage channel, and the depth of the sedimentation tank is consistent with that of the drainage channel; the water in the sedimentation tank 2 is pumped to the first-stage sewage intercepting area 3 by a water pump.
The first-stage sewage intercepting area 3 comprises a first sewage intercepting pool, a sewage suction truck rail, a sewage discharge diversion trench and a first overflow pipe;
the length-width ratio of the first sewage intercepting tank is determined according to the actual size of the site, the first sewage intercepting tank is of a reinforced concrete structure and is flat-bottomed, the effective depth is 2m-4m, and the surface hydraulic load is 1.5-4.5 m3/(m2H), the hydraulic retention time is 0.5-2.0 h;
the sewage suction trucks adopt automatic cruising bottom sewage suction to collect the sewage at the bottom of the first sewage cutting pool, and the sewage flows to the water-sludge separation zone 9 through the sewage discharge diversion trench, and the sewage suction flow of each sewage suction truck is controlled to be 15-20m 3;
the width between two rails of the sewage suction truck is controlled to be 3-6 m, and besides the guide rails are erected at two sides of the tank, the guide rail in the middle of the tank is additionally arranged and fixed at the bottom so as to ensure the stability of the guide rail;
the sewage discharge diversion trench is erected on a guide rail of the first sewage cutting pool and leads to the water-sludge separation zone 9;
the first overflow pipe is positioned at the upper opening of the first sewage interception tank and downwards 10cm, the outer diameter of the first overflow pipe is 110cm, the first overflow pipe is arranged every 2.5m, and water flows to the secondary sewage interception area 4.
The secondary sewage intercepting area 4 comprises a second sewage intercepting pool, a biological brush, an aeration system and a second overflow pipe;
the length-width ratio of the second sewage intercepting pool is determined according to the actual size of the siteThe method adopts a reinforced concrete structure, the bottom is flat, the bottom is positioned on the same horizontal plane with the first-stage sewage intercepting area, the overflow edge is 0.5m lower than the first-stage sewage intercepting area 3, the other three edges are as deep as the first-stage sewage intercepting area 3, the suspended solid concentration (MLSS) of mixed liquid is controlled to be 200 plus one year of sewage 500mg/L, the volume load is controlled to be 1.2-1.4kg of BOD5(kgMLSS/d), sludge load is controlled to be 0.2-0.4kgBOD5(kgMLSS/d), the hydraulic retention time is 1.5-3 h;
the biological brushes are spaced by 0.5 meter and distributed in the pool in a net shape;
the aeration system mainly comprises a blower, an aeration pipeline and a micropore oxygenation plate, and ensures that dissolved oxygen in water is more than 5 mg/L;
the second overflow pipe is positioned at the position of 10cm below the upper opening of the second sewage interception tank, has the outer diameter of 110cm, is arranged every 2.5m, and flows to the vertical upward subsurface flow wetland 5.
The vertical upstream subsurface flow wetland 5 comprises a first tank body, a pipeline, a first substrate and a first plant;
the first tank body is of a reinforced concrete structure and is flat-bottomed, the effective depth of an overflow edge is 0.8m, and the water inlet edge is flush with the overflow edge of the secondary sewage intercepting area 4 and has the depth of 0.9 m; the rest two sides are 1m deep, the design length-width ratio is controlled within 3:1, and the hydraulic load is 150-2·d)；
One end of each pipeline is connected to a second overflow pipe of the secondary sewage intercepting area 4, the second overflow pipes extend to the pool bottom along the pool wall and extend to the other pool wall along the pool bottom towards the water flow direction, the pipelines are parallel and have the interval of 2m, the tail ends of the pipelines are blocked, and a section close to the bottom is provided with a honeycomb pore;
the first substrate is cobblestones with the thickness of 30cm and the particle size of 30-50mm from the bottom layer to the upper layer; spherical activated carbon with the thickness of 10cm and the particle size of 3-5 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm; 10cm thick iron carbon with the grain diameter of 30-50 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm;
the first plant comprises canna, loosestrife, iris and the like; the treated water overflows from the upper opening to the horizontal flow wetland 6.
The horizontal flow wetland 6 comprises a second tank body, a second substrate and a second plant;
the second pool body is of a reinforced concrete structure, a geomembrane is paved at the bottom of the second pool body, the water inlet edge and the vertical upward undercurrent wetlevelness are matched, the effective depth of the water outlet edge is 0.6m, and the other two edges are 10cm higher than the water inlet edge;
the second substrate is 3-5cm of volcanic rock, and the second plant is canna.
The comprehensive planting and breeding area 7 is divided into a shallow water area and a deep water area, the depth of the shallow water area is 1m, the shallow water area extends 10 meters around the pond 10 to the center of the pond, the deep water area is 2-2.5m deep and is arranged in the middle of the pond 10.
The water source maintenance area 8 is a pond water inlet channel, is matched with a bacteria and algae expanding culture barrel, and periodically supplements beneficial microorganisms and beneficial phytoplankton.
The water and sludge separation area 9 is connected with the first-stage sewage intercepting area 3, sewage discharged from the first-stage sewage intercepting area 3 is subjected to secondary sedimentation, supernatant after sedimentation flows back to the sedimentation tank 2, and sludge is used as a fruit forest fertilizer.
The water supplementing system 11 is connected with a water source through a pump room, and the supplemented water enters the comprehensive planting and breeding area 7.
The drainage system 12 consists of a drainage pump station and a pipeline connecting the two comprehensive planting and breeding areas 7, and the drained water is purified water reaching the standard.
The utility model discloses a pond engineering recirculating aquaculture tail water centralized processing's system mainly is to the great pond culture mode of environmental pollution such as fish, soft-shelled turtle. By utilizing the pond drainage system 1, the culture tail water of a parcel is concentrated into a region, the water quality is purified through the treatment means of primary sedimentation, primary sewage interception, secondary sewage interception, subsurface flow wetland purification, horizontal flow wetland purification, comprehensive planting and culturing, bacterium and algae restoration and the like, and the bacterium and algae and dissolved oxygen in the water body are recovered, so that the aim of recycling the culture water is finally fulfilled; on the other hand, the sewage discharged from the first-stage sewage intercepting area 3 is subjected to water-sludge separation, the supernatant water flows back to the sedimentation tank 2 for retreatment, and the sludge part is directly used for providing fertilizers for economic fruit forests.
The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle scope of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a pond engineering recirculating aquaculture tail water centralized processing's system, includes pond drainage system (1), sedimentation tank (2), one-level cuts dirty district (3), second grade cuts dirty district (4), vertical upstream wetland (5), horizontal flow wetland (6), synthesizes planting and breeding district (7), water source maintenance district (8), water silt disengagement zone (9), pond (10), its characterized in that: the pond drainage system (1) is connected with the sedimentation tank (2) and is used for draining culture tail water of the pond (10) into the sedimentation tank (2); the sedimentation tank (2) is connected with the primary sewage intercepting area (3), and water in the sedimentation tank (2) is delivered to the primary sewage intercepting area (3) through a water pump; the first-stage sewage intercepting area (3) is respectively connected with the second-stage sewage intercepting area (4) and the water-sludge separating area (9) and is used for carrying out primary sewage intercepting separation on the culture tail water; the secondary sewage intercepting area (4) is used for further intercepting and separating the culture tail water treated by the primary sewage intercepting area (3); the inlet of the vertical upward subsurface flow wetland (5) is connected with the outlet of the secondary sewage intercepting area (4), the inlet of the horizontal flow wetland (6) is connected with the outlet of the vertical upward subsurface flow wetland (5), and the horizontal upward subsurface flow wetland and the vertical upward subsurface flow wetland are respectively used for further purifying the culture tail water; the purified water enters the comprehensive planting and breeding area (7) from the horizontal flow wetland (6) and then enters the water source maintenance area (8) from the comprehensive planting and breeding area (7), and the water source maintenance area (8) provides water sources for the pond (10).
2. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 1, characterized in that: the pond drainage system (1) comprises a pond drainage gate and a drainage channel; the drainage gate is communicated with the pond (10) and the drainage channel and is used for controlling water flow and water level; the depth of the drainage channel is lower than the bottom of the pond (10), a one thousandth gradient is arranged towards the drainage direction, and the deeper end of the drainage channel is connected with the sedimentation tank (2).
3. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 2, characterized in that: the water-sludge separation area (9) is used for carrying out secondary sedimentation on the sewage discharged from the primary sewage intercepting area (3), the supernatant after sedimentation flows back to the sedimentation tank (2), and the sludge is used as a fruit forest fertilizer; the effective volume of the sedimentation tank (2) is one half of the volume of the water-sludge separation zone (9), is connected with the deeper end of the drainage channel, and has the same depth with the drainage channel.
4. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 1, characterized in that: the first-stage sewage intercepting area (3) comprises a first sewage intercepting pool, a sewage suction truck rail, a sewage discharge diversion trench and a first overflow pipe;
the length-width ratio of the first sewage interception tank is determined according to the actual field size, the first sewage interception tank is of a reinforced concrete structure and is flat-bottomed, and the effective depth is 2-4 m;
the sewage suction truck adopts automatic cruising bottom sewage suction and is used for collecting bottom sewage of the primary sewage interception area (3) and flows to the water-sludge separation area (9) through the sewage discharge diversion trench;
the width between two rails of the sewage suction truck is controlled to be 3-6 m, and besides the guide rails are erected on two sides of the pool, the guide rail in the middle of the pool is additionally fixed at the bottom to ensure the stability of the guide rail;
the sewage discharge diversion trench is erected on a guide rail of the first sewage interception tank and leads to the water-sludge separation zone (9);
the first overflow pipe is positioned at the position of 10cm below the upper opening of the first sewage interception tank, the outer diameter of the first overflow pipe is 110cm, the first overflow pipe is arranged every 2.5m, and water flows to the secondary sewage interception area (4).
5. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 1, characterized in that: the secondary sewage intercepting area (4) comprises a second sewage intercepting pool, a biological brush, an aeration system and a second overflow pipe;
the length-width ratio of the second sewage intercepting pool is determined according to the actual size of the site, the second sewage intercepting pool is of a reinforced concrete structure and is flat-bottomed, the bottom of the second sewage intercepting pool is on the same horizontal plane with the first-stage sewage intercepting area (3), the overflow edge is 0.5m lower than the first-stage sewage intercepting area (3), and the rest three edges are as deep as the first-stage sewage intercepting area (3);
the biological brushes are spaced by 0.5 meter and are distributed in the second sewage interception tank in a net shape;
the aeration system mainly comprises a blower, an aeration pipeline and a micropore oxygenation plate and is used for ensuring that dissolved oxygen in a water body is more than 5 mg/L;
the second overflow pipe is positioned at the position of 10cm below the upper opening of the second sewage interception tank, has the outer diameter of 110cm, is arranged every 2.5m, and flows to the vertical upward subsurface flow wetland (5).
6. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 5, characterized in that: the vertical upstream subsurface flow wetland (5) comprises a first tank body, a first substrate, a first plant and a pipeline;
the first tank body is of a reinforced concrete structure and is flat-bottomed, the effective depth of an overflow edge is 0.8m, and the water inlet edge is flush with the overflow edge of the secondary sewage intercepting area (4) and has the depth of 0.9 m; the rest two sides are 1m deep, and the design length-width ratio is controlled within 3: 1;
one end of each pipeline is connected to a second overflow pipe of the secondary sewage intercepting area (4), extends to the pool bottom along the pool wall and extends to the other pool wall along the pool bottom towards the water flow direction, the pipelines are parallel and spaced at intervals of 2m, the tail end of each pipeline is closed, and a section close to the bottom is provided with a honeycomb pore;
the first substrate is cobblestones with the thickness of 30cm and the particle size of 30-50mm from the bottom layer to the upper layer in sequence; spherical activated carbon with the thickness of 10cm and the particle size of 3-5 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm; 10cm thick iron carbon with the grain diameter of 30-50 mm; cobblestones with the thickness of 10cm and the particle size of 30-50 mm;
the first plant comprises canna, loosestrife and iris; the treated water overflows to the horizontal flow wetland (6) from the upper opening.
7. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 1, characterized in that: the horizontal flow wetland (6) comprises a second tank body, a second substrate and a second plant; the second pool body is of a reinforced concrete structure, a geomembrane is paved at the bottom of the second pool body and is leveled with the vertical upstream subsurface flow wetland (5), the water inlet edge is leveled with the vertical upstream subsurface flow wetland (5), the effective depth of the water outlet edge is 0.6m, and the other two edges are 10cm higher than the water inlet edge; the second substrate is 3-5cm of volcanic rock, and the second plant is canna; the treated water overflows to a comprehensive planting area (7).
8. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 1, characterized in that: the comprehensive planting and breeding area (7) is divided into a shallow water area and a deep water area, the depth of the shallow water area is 1m, the shallow water area extends 10 meters around the pond (10) to the center of the pond, and the shallow water area is used for planting submerged plants; the depth of the deep water area is 2-2.5m and is in the middle of the pond; the water source maintenance area (8) is a pond water inlet channel and is matched with a bacteria and algae expanding culture barrel to periodically supplement beneficial microorganisms and beneficial phytoplankton.
9. The system for centralized treatment of tail water of pond engineering recirculating aquaculture according to any one of claims 1 to 8, wherein: the system also comprises a water replenishing system (11) and a drainage system (12); the water replenishing system (11) is connected with a water source through a pump room and is used for replenishing water, and the replenished water enters the comprehensive planting and breeding area (7); the drainage system (12) mainly comprises a drainage pump station and a pipeline and is used for discharging redundant water in the comprehensive planting and breeding area (7), and the discharged water is purified water reaching the standard.
10. The pond engineering recirculating aquaculture tail water centralized treatment system according to claim 9, characterized in that: the tail water treatment area is arranged according to 5% -8% of the area of the culture area, wherein the proportion of the sedimentation tank, the sewage interception area, the wet area, the comprehensive breeding area, the water source maintenance area and the water sludge separation area is about 1:18:25:40:15: 1.
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