CN211620290U - Aquaculture tail water treatment and circulating device - Google Patents
Aquaculture tail water treatment and circulating device Download PDFInfo
- Publication number
- CN211620290U CN211620290U CN202020048826.6U CN202020048826U CN211620290U CN 211620290 U CN211620290 U CN 211620290U CN 202020048826 U CN202020048826 U CN 202020048826U CN 211620290 U CN211620290 U CN 211620290U
- Authority
- CN
- China
- Prior art keywords
- tank
- filter
- water
- aeration
- biological zeolite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 195
- 238000009360 aquaculture Methods 0.000 title claims abstract description 35
- 244000144974 aquaculture Species 0.000 title claims abstract description 35
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 104
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000010457 zeolite Substances 0.000 claims abstract description 104
- 238000005273 aeration Methods 0.000 claims abstract description 79
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- 238000011001 backwashing Methods 0.000 claims description 37
- 239000002131 composite material Substances 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 23
- 239000002893 slag Substances 0.000 claims description 20
- 239000010881 fly ash Substances 0.000 claims description 17
- 238000011010 flushing procedure Methods 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 12
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000009298 carbon filtering Methods 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 8
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 abstract description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 32
- 229910000831 Steel Inorganic materials 0.000 description 19
- 239000010959 steel Substances 0.000 description 19
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 15
- 229910052698 phosphorus Inorganic materials 0.000 description 15
- 239000011574 phosphorus Substances 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000002245 particle Substances 0.000 description 11
- 239000003344 environmental pollutant Substances 0.000 description 9
- 231100000719 pollutant Toxicity 0.000 description 9
- 238000009826 distribution Methods 0.000 description 7
- 239000000945 filler Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 organic matters Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012136 culture method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Abstract
The utility model provides an aquaculture tail water treatment and circulating device, including leading compound coarse filter tank A, 1 st biological zeolite aeration filtering pond B, middle tank C, 2 nd biological zeolite aeration filtering pond D, the quick filter tank E of active carbon and the clean water basin F that is linked together in proper order, through I intercommunication of pipeline between leading compound coarse filter tank A and the 1 st biological zeolite aeration filtering pond B, link to each other through the overflow weir between 1 st biological zeolite aeration filtering pond B and the middle tank C. The utility model discloses in, because aquaculture tail water is lower carbon-nitrogen ratio (C/N) sewage, so adopt two-stage series connection biological zeolite aeration filter, can remove organic matter and ammonia nitrogen in the sewage under lower C/N high efficiency.
Description
Technical Field
The utility model relates to an aquaculture tail water treatment technical field, concretely relates to aquaculture tail water treatment and circulating device.
Background
As the market demand is increased, the aquaculture industry in China gradually walks the way of intensive development, and the scale of intensive culture modes such as net cages, net fences, industrial culture and the like is enlarged year by year. However, facilities and equipment in most of factory aquaculture bases in China fall behind, the modernization, standardization and automation degrees are low, sewage treatment facilities are not built or are modified but cannot reach the disposal and discharge standard, most pollutants generated by aquaculture are directly discharged into the water body environment, when a large amount of sewage containing undigested feed, excrement and antibiotics is directly discharged into the water body or exceeds the water body receiving capacity, the water body environment is seriously deteriorated, great negative effects are generated on the environment, and the sustainable development of the aquaculture industry is limited.
The aquaculture tail water mainly contains pollutants such as organic matters, ammonia nitrogen, nitrite, nitrate, phosphorus and the like. The method is characterized in that the water quantity is large, the types of pollutants are few, the content change is small, and the pollutants are mainly organic matters, nitrogen, phosphorus and other nutritive salts, so most aquaculture tail water is micro-polluted water, the pollution load is relatively low, and the aquaculture tail water belongs to sewage with a low carbon-nitrogen ratio. The prior art has the problems of additional carbon source, long treatment time, low nitrogen and phosphorus removal efficiency, high cost, inconvenient maintenance and the like. In order to reduce the environmental pollution caused by aquaculture and ensure the healthy and sustainable development of aquaculture industry, a plurality of high-efficiency and low-cost aquaculture tail water treatment technologies are urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides an aquaculture tail water treatment and circulating device, this aquaculture tail water treatment and circulating device mainly comprise units such as leading compound coarse filter tank, two-stage serial-type biological zeolite aeration filter, the fast filtering pond of active carbon, ultraviolet ray disinfection, lower floor's equipment room. A. B, C, D, E, F the six tanks are formed by different communication modes: a front composite rough filtering tank A; 1 st biological zeolite aeration filter B; a middle water storage tank C; 2 nd biological zeolite aeration filter D; an active carbon rapid filter tank E; and a clean water tank F. A is a fly ash filter material and a composite steel slag filter material, B, D is a fixed biological zeolite filler, an aeration device is arranged at the bottom of the B, D pool, aeration air is contacted with tail water from bottom to top in a cocurrent flow (upflow water inlet) and countercurrent flow (downflow water inlet) mode respectively, and degradation of pollutants and purification of water quality are realized through mass transfer and stirring of DO, pollutants and the like among a liquid phase (tail water), a gas phase (air) and a solid phase (biomembrane).
Realize the technical scheme of the utility model is that:
the utility model provides an aquaculture tail water treatment and circulating device, includes leading compound coarse filter A, the biological zeolite aeration filter B of 1 st, middle tank C, the biological zeolite aeration filter D of 2 nd, the quick filter E of active carbon and clean water basin F that are linked together in proper order, through I intercommunication of pipeline between leading compound coarse filter A and the biological zeolite aeration filter B of 1 st, link to each other through the overflow weir between 1 st biological zeolite aeration filter B and the middle tank C.
The composite pre-filtering device is characterized in that a water distribution pipe is arranged on the pre-composite pre-filtering tank A, a fly ash filter material layer, a composite steel slag filter material layer and a gravel bearing layer I are sequentially arranged in the pre-composite pre-filtering tank A from top to bottom, a pipeline I is arranged at the bottom of the pre-composite pre-filtering tank A, and a check valve and an electromagnetic valve are arranged on the pipeline I.
Preferably, the fly ash filter material is mainly made of fly ash, the fly ash is formed by cooling pulverized coal after the pulverized coal is subjected to heat absorption by a hot surface under the condition of suspension combustion, and under the action of surface tension, the fly ash has loose and porous surface, large specific surface area, active groups and adsorption characteristics.
Preferably, the particle size of the fly ash filter material is 6-8 mm.
Preferably, the composite steel slag filter layer is composed of a baking-free composite steel slag. The composite steel slag filter material has the characteristics of uniform particle size, high strength, large specific surface area, high porosity, stable performance and the like, and is easier to apply in practical engineering. The composite steel slag filter material has excellent phosphorus removal efficiency and alkalinity releasing capacity, and the phosphorus removal rate is always kept above 80%.
Further preferably, the preparation method of the baking-free composite steel slag comprises the following steps: the waste steel slag from steel smelting plants is ball-milled into powder, and the filter material is granulated by taking cement as an additive, so that the loss problem of the powder steel slag in the application process is avoided, the filter material manufacturing procedure is simplified, and the high-temperature firing process is omitted. After the filter material is pelletized, a spherical composite filter material blank with the grain size of 3-5 mm is obtained through the working procedures of screening, curing and the like, the blank is immersed into 6mol/L sodium hydroxide solution, the solid-liquid ratio is kept to be 1: 1, and hydrothermal modification is carried out for 6 hours at 105 ℃ to prepare the baking-free composite steel slag filter material. The composite steel slag filter material has the particle size of 3-5 mm and the bulk density of 1.0975g/cm3The porosity was 36.78%, and the specific surface area was 20.65 m2/g, the compressive strength is 5.15MPa, the wear rate is 1.20 percent, and the crushing rate is 0.40 percent.
Preferably, the height of the fly ash filter layer is 1.0-1.2 m, the height of the composite steel slag filter layer is 0.9-1.0 m, and the height of the gravel bearing layer is 0.5-0.6 m.
A biological zeolite packing layer I, a pebble bearing layer I, an air pipe and a supporting filter plate I are sequentially arranged in the 1 st biological zeolite aeration filter B from top to bottom, and a gate valve is arranged on the overflow weir.
The biological zeolite filler layer adopts bivalent cation-rich oblique natural zeolite as a carrier of the biological zeolite, the particle size of the adopted natural zeolite is 1.5-2.5 mm, and biological zeolite culture is carried out through specific physicochemical biological treatment. The zeolite has a net-frame-shaped special space structure and interconnected holes and channels, so that the specific surface area of the zeolite is extremely large (400-800 m)2In terms of/g). In addition, the alkali and alkaline earth metal ions on the zeolite framework are highly susceptible to cations in aqueous solutionsAn exchange takes place. Thus, the zeolite has good adsorption and exchange performance. Meanwhile, it has enrichment effect on bacteria, and the zeolite is an ideal biological carrier because the microporous structure of the zeolite is suitable for the growth and reproduction of microorganisms and is non-toxic to the microorganisms.
Further preferably, the culture method of the biological zeolite filler is as follows: taking activated sludge of an aeration tank of a sewage plant, placing the activated sludge in a 1 st biological zeolite aeration filter tank, and carrying out dynamic inoculation culture with the gas-water ratio of 4: 1. NH when the water is discharged through the culture for 20d3When the removal rate of the-N is stabilized to be about 93 percent, the culture of the biological zeolite is successful.
The thickness of the biological zeolite packing layer I is 2.5 m-3.0 m, and the thickness of the pebble supporting layer is 0.4-0.5 m.
And the bottom of the middle water storage tank C is provided with a water suction pump I, the water suction pump I is connected with a water distributor I, and the water distributor I is positioned in the 2 nd biological zeolite aeration filter D. And the water distributor I is communicated with the water suction pump I of the middle water storage tank C through a pipeline.
A biological zeolite packing layer II, a pebble bearing layer II and a supporting filter plate II are sequentially arranged in the 2 nd biological zeolite aeration filter D from top to bottom, a filter head I is arranged between the pebble bearing layer II and the supporting filter plate II, and a water suction pump II is arranged at the bottom of the 2 nd biological zeolite aeration filter D. The filter head I is an ABS (acrylonitrile butadiene styrene) long-handle filter head, is used as an aeration device and a water outlet and distribution device and is arranged at the bottom of the pebble bearing layer II. The thickness of the biological zeolite packing layer II is 2.0-2.5 m, and the thickness of the pebble bearing layer II is 0.4-0.5 m.
The activated carbon rapid filter is characterized in that a water distributor II is arranged in the activated carbon rapid filter E and is connected with a water suction pump II, a granular activated carbon filter layer, a gravel bearing layer II and a supporting base plate are sequentially arranged in the activated carbon rapid filter E from top to bottom, and a filter head II is arranged between the gravel bearing layer II and the supporting base plate. The granular activated carbon filter layer is composed of granular activated carbon, the granular activated carbon is prepared by a water vapor method, and the BET specific surface area is 1037m2The total pore volume is 0.8152mL/g, the particle size is 4-10 meshes, and the strength is 93%.
The filter head II is an ABS (acrylonitrile butadiene styrene) long-handle filter head, is used as an air back-flushing and water outlet and distribution device and is arranged at the bottom of the gravel bearing layer II.
And a tank B backwashing water inlet, a tank D backwashing water inlet, a tank E backwashing water inlet and a tank F backwashing water inlet are respectively arranged below the 1 st biological zeolite aeration filter tank B, the 2 nd biological zeolite aeration filter tank D, the activated carbon rapid filter tank E and the clean water tank F, and the tank B backwashing water inlet, the tank D backwashing water inlet, the tank E backwashing water inlet and the tank F backwashing water inlet are connected with a backwashing water main pipe.
Preferably, the 1 st biological zeolite aeration filter B and the 2 nd biological zeolite aeration filter D form a two-stage series biological aeration filter.
And air pipelines are also arranged at the lower ends of the 1 st biological zeolite aeration filter B, the 2 nd biological zeolite aeration filter D and the activated carbon rapid filter E and are connected with an air compressor.
A back flushing drainage main pipe is arranged below the middle water storage tank C, the 2 nd biological zeolite aeration filter tank D, the activated carbon rapid filter tank E and the clean water tank F, and one end of the back flushing drainage main pipe penetrates through the middle water storage tank C and is arranged at the overflow weir; the back washing drainage main pipe is also provided with a branch pipe I and a branch pipe II, the branch pipe I is arranged in the middle water storage tank C, the end part of the branch pipe I is arranged in the 2 nd biological zeolite aeration filter tank D, the branch pipe II is arranged between the activated carbon rapid filter tank E and the clean water tank F, and the end part of the branch pipe II is arranged in the activated carbon rapid filter tank E.
And ultraviolet disinfection equipment is also arranged in the clean water tank F. The clean water tank F comprises ultraviolet disinfection equipment and is also used as a backwashing water tank. The activated carbon rapid filter E is communicated with the clean water tank F through a pipeline, and a check valve and an electromagnetic valve are arranged on the pipeline.
The lower part of the aquaculture tail water treatment and circulation device is an equipment room and mainly comprises an air compressor, a motor set, a backwashing pump and various pipelines, wherein the air compressor, the motor set and the backwashing pump are all based on a PLC system.
The utility model has the advantages that:
(1) the utility model discloses in, because aquaculture tail water is lower carbon-nitrogen ratio (C/N) sewage, so adopt two-stage series connection biological zeolite aeration filter, can remove organic matter and ammonia nitrogen in the sewage under lower C/N high efficiency. The biological zeolite aeration filter tank has low TP removal efficiency, and adopts small-particle homogeneous filter materials, has requirements on water inlet SS and generally requires 50-60 mg/L, so a rough filter tank is arranged at the front end, and the TP can be removed while the water body SS is reduced under the synergistic filtering-adsorption action of the fly ash filter materials and the composite steel slag filter materials in the rough filter tank.
(2) The utility model discloses in, because the biomembrane grows, fixes on the great zeolite filler of specific surface area for hold a large amount of microorganisms in the biological aerated filter, demonstrate the advantage that volume load is high, water conservancy dwell time is short, guarantee the filtering pond simultaneously and move under the lower circumstances of mud load, provide reliable assurance for further degradation organic pollutant. Meanwhile, the device does not need to add an additional carbon source, and organic matters, nitrogen, phosphorus and other pollutants in the tail water can be greatly removed through the front-end coarse filtering tank and the two-stage serial biological zeolite aeration filter tank.
(3) The utility model discloses in, device inner structure arranges rationally, and the business turn over water mode and the back flush of make full use of structural configuration design tail water are intake and the drainage mode, have reduced head loss, make this processing procedure carry on smoothly. Meanwhile, the hydraulic retention time of each pool of the device is short, so the treatment aging is high and no secondary pollution is caused.
(4) The utility model discloses in, the raw and other materials of the fly ash filter material that adopts, compound slag filter material, biological zeolite filler all are economic material, are examined the relation of packing particle diameter and backwash water volume simultaneously, adopt reasonable economic particle diameter, and these all reduce the cost of device. And the fly ash and the steel slag are used as filter materials, so that the environment effects of waste regeneration and resource utilization are achieved. Meanwhile, the device occupies a small area, is simple to operate and maintain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a front composite coarse filter tank A.
FIG. 3 is a schematic structural diagram of a 1 st biological zeolite aeration filter B and an intermediate water storage tank C.
FIG. 4 is a schematic structural view of a 2 nd biological zeolite aerated filter D.
Fig. 5 is a schematic view of the overall structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in figure 1, the aquaculture tail water treatment and circulation device sequentially comprises a preposed composite rough filter tank A, a 1 st biological zeolite aeration filter tank B, a middle water storage tank C, a 2 nd biological zeolite aeration filter tank D, an active carbon quick filter tank E and a clean water tank F which are communicated, wherein the preposed composite rough filter tank A is communicated with the 1 st biological zeolite aeration filter tank B through a pipeline I7, and the 1 st biological zeolite aeration filter tank B is connected with the middle water storage tank C through an overflow weir 35.
As shown in fig. 2, a water distribution pipe 1 is arranged on the front-mounted composite rough filtering tank a, a fly ash filtering material layer 2, a composite steel slag filtering material layer 3 and a gravel bearing layer i 4 are sequentially arranged in the front-mounted composite rough filtering tank a from top to bottom, a pipeline i 7 is arranged at the bottom of the front-mounted composite rough filtering tank a, and a check valve 5 and an electromagnetic valve 6 are arranged on the pipeline i 7. The particle size of the fly ash filter material layer 2 is 6-8 mm, the height of the fly ash filter material layer 2 is 1.0-1.2 m, the height of the composite steel slag filter material layer 3 is 0.9-1.0 m, and the height of the gravel bearing layer I4 is 0.5-0.6 m.
As shown in FIG. 3, a biological zeolite packing layer I34, a pebble supporting layer I10, an air pipe 9 and a supporting filter plate I8 are sequentially arranged in the 1 st biological zeolite aeration filter B from top to bottom, and a gate valve 36 is arranged on the overflow weir 35. The biological zeolite packing layer I34 is made of natural zeolite, the particle size of the natural zeolite is 1.5-2.5 mm, the thickness of the natural zeolite is 2.5-3.0 m, and the thickness of the pebble bearing layer I10 is 0.4-0.5 m.
As shown in figure 3, the middle water storage tank C is connected with the 1 st biological zeolite aeration filter B through an overflow weir 35, an overflow port is provided with a gate valve, the bottom of the middle water storage tank C is provided with a water suction pump I16, the water suction pump I16 is connected with a water distributor I42, and the water distributor I42 is positioned in the 2 nd biological zeolite aeration filter D.
As shown in figure 4, a biological zeolite packing layer II 41, a pebble bearing layer II 20 and a supporting filter plate II 21 are sequentially arranged in the 2 nd biological zeolite aeration filter D from top to bottom, a filter head I18 is arranged between the pebble bearing layer II 20 and the supporting filter plate II 21, and a water suction pump II 22 is arranged at the bottom of the 2 nd biological zeolite aeration filter D. The biological zeolite packing layer II 41 adopts natural zeolite with the particle size of 2.5-4.5 mm and the thickness of 2.0-2.5 m, and the thickness of the pebble bearing layer II 20 is 0.4-0.5 m.
The activated carbon rapid filter E is internally provided with a water distributor II 43, the water distributor II 43 is connected with a water suction pump II 22, the activated carbon rapid filter E is internally provided with a granular activated carbon filter layer 44, a gravel bearing layer II 25 and a supporting base plate 26 from top to bottom in sequence, and a filter head II 24 is arranged between the gravel bearing layer II 25 and the supporting base plate 26.
Referring to fig. 1, the lower part of the aquaculture tail water treatment and circulation device is an equipment room, and mainly comprises an air compressor 11, a motor set, a back washing pump 32 and various pipelines.
And a tank B backwashing water inlet 12, a tank D backwashing water inlet 17, a tank E backwashing water inlet 23 and a tank F backwashing water inlet 37 are respectively arranged below the 1 st biological zeolite aeration filter tank B, the 2 nd biological zeolite aeration filter tank D, the activated carbon rapid filter tank E and the clean water tank F, and the tank B backwashing water inlet 12, the tank D backwashing water inlet 17, the tank E backwashing water inlet 23 and the tank F backwashing water inlet 37 are all connected with a backwashing water dry pipe 15.
And the lower ends of the 1 st biological zeolite aeration filter B, the 2 nd biological zeolite aeration filter D and the activated carbon rapid filter E are also provided with an air pipeline 14, and the air pipeline 14 is connected with an air compressor 11.
A back flushing drainage main pipe 28 is also arranged below the middle water storage tank C, the 2 nd biological zeolite aeration filter tank D, the activated carbon rapid filter tank E and the clean water tank F, and one end of the back flushing drainage main pipe 28 penetrates through the middle water storage tank C and is arranged at the position of the overflow weir 35; the back flushing water draining main pipe 28 is also provided with a branch pipe I48 and a branch pipe II 49, the branch pipe I48 is arranged in the middle water storage tank C, the end part of the branch pipe I48 is arranged in the 2 nd biological zeolite aeration filter tank D, the branch pipe II 49 is arranged between the activated carbon rapid filter tank E and the clean water tank F, and the end part is arranged in the activated carbon rapid filter tank E.
And ultraviolet disinfection equipment 47 is also arranged in the clean water tank F.
Specifically, as shown in fig. 5, aquaculture tail water uniformly enters the pre-coarse filtration tank a through the water distribution pipe 1 and permeates downwards, the aquaculture tail water firstly passes through the fly ash filter material layer 2, impurities and suspended matters in the tail water are intercepted, and phosphorus is primarily removed through the adsorption effect of the fly ash on phosphorus elements. And then the tail water passes through a composite steel slag filter material layer 3, impurities and suspended matters in the water are continuously removed, meanwhile, as the composite steel slag filter material has excellent phosphorus removal efficiency and alkalinity releasing capacity, phosphorus elements are further removed, the removal rate of the tail water passing through a preposed coarse filter tank SS is 95%, the removal rate of organic matters is 50%, and the removal rate of phosphorus is 80-85%. And then the coarse filtered water enters the water inlet space of the 1 st biological zeolite aeration filter B from a pipeline I7 through a gravel bearing layer in an upflow mode, water flow enters a biological zeolite filler layer I34 through a support filter plate I8 and the gravel bearing layer I10, an air pipe 9 arranged in the gravel bearing layer I10 serves as an aeration pipe to supply oxygen for the biological membrane on the surface of the filter material, and microorganisms in the biological membrane oxidize and degrade pollutants such as organic matters, nitrogen, phosphorus and the like in water. The gas-water ratio of the 1 st biological zeolite aeration filter B is set as 2: 1, setting the hydraulic retention time to be 1.0h, and then respectively removing the organic matters, nitrogen and phosphorus at 89%, 93% and 46%. The 1 st biological zeolite aeration filter B enters the middle water storage tank C from the effluent of the overflow weir 35, and the gate valve is normally opened when the device is in normal operation, because the 1 st biological zeolite aeration filterThe hydraulic retention time of the tank B and the 2 nd biological zeolite aeration filter D is not used, so that an intermediate water storage tank C is used as a transition tank. Water in the middle water storage tank C enters the 2 nd biological zeolite aeration filter tank D through the water distributor I42 after passing through the water suction pump I16 at the bottom of the tank, the water inlet mode is a down-flow mode, the water passes through the biological zeolite packing layer II 41, the filter head I18 at the bottom of the pebble supporting layer II 20 is used as an aeration device and a water outlet and distribution device, the aeration device supplies oxygen to the biological membrane on the surface of the filter material, and microorganisms in the biological membrane oxidize and degrade pollutants such as organic matters, nitrogen, phosphorus and the like in the water. The gas-water ratio of the 2 nd biological zeolite aeration filter D is set as 1: 1, hydraulic retention time is set to 1.5h, and NH3-N、CODMnTurbidity and total phosphorus removal were 95%, 34%, 90% and 35%, respectively. And then, the 2 nd biological zeolite aeration filter D enters a water outlet space from the outlet water of the filter head I18, enters an activated carbon rapid filter E from a water suction pump II 22 and a water distributor II 43, the water inlet mode is a down-flow mode, the water passes through a granular activated carbon filter layer 44, the filter head II 24 positioned at the bottom of a gravel bearing layer II 25 is used as an air back-flushing and water outlet water distribution device, and the granular activated carbon filter layer 44 reduces the turbidity and the chromaticity of the water body to further purify the water quality. The active carbon rapid filter E enters the water outlet space from the water outlet of the filter head II 24 and enters the clean water tank F through a pipeline, and the clean water tank F is internally provided with ultraviolet disinfection equipment 47 for killing toxic substances such as bacteria and the like in the water body. Meanwhile, the clean water tank F is used as a back flushing water tank, and the 1 st biological zeolite aeration filter B, the 2 nd biological zeolite aeration filter D and the activated carbon rapid filter E can be flushed by a back flushing water pump 32. The 1 st biological zeolite aeration filter B, the 2 nd biological zeolite aeration filter D and the activated carbon rapid filter E are washed by air-water combined backwashing, and are alternately operated for 1-2 times in the sequence and mode of air backwashing → (stopping for 30 s-1 min) → water backwashing (cleaning) → air-water combined backwashing → (stopping for 30 s-1 min) and water backwashing, and finally washed by water for 20-30 min. The three pools are washed one by one in sequence one day, and the required water amounts are respectively about 20%, 18% and 20% of the treated water amount. When flushing, the device stops running, and valves of other pools which are not flushed are closed completely. The turbidity of the treated effluent is less than or equal to 5NTU and CODMn≤8mg/L，TP≤0.2mg/L，TN≤1.5mg/L，DO≥3.0mg/L，Reaches the discharge standard and can be used as a clean water source for recycling.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an aquaculture tail water treatment and circulating device which characterized in that: the biological zeolite aeration filter comprises a preposed composite rough filtering tank A, a 1 st biological zeolite aeration filter B, an intermediate water storage tank C, a 2 nd biological zeolite aeration filter D, an active carbon quick filtering tank E and a clean water tank F which are communicated in sequence, wherein the preposed composite rough filtering tank A and the 1 st biological zeolite aeration filter B are communicated through a pipeline I (7), and the 1 st biological zeolite aeration filter B and the intermediate water storage tank C are connected through an overflow weir (35).
2. The aquaculture tail water treatment and circulation device of claim 1, wherein: be equipped with water distributor (1) on the leading compound coarse strainer A, from the top down is equipped with fly ash precoat (2), compound slag precoat (3) and gravel supporting layer I (4) in proper order in the leading compound coarse strainer A, and leading compound coarse strainer A bottom is equipped with pipeline I (7), is equipped with check valve (5) and solenoid valve (6) on pipeline I (7).
3. The aquaculture tail water treatment and circulation device of claim 1, wherein: a biological zeolite packing layer I (34), a pebble bearing layer I (10), an air pipe (9) and a support filter plate I (8) are sequentially arranged in the 1 st biological zeolite aeration filter B from top to bottom, and a gate valve (36) is arranged on an overflow weir (35).
4. The aquaculture tail water treatment and circulation device of claim 1, wherein: and the bottom of the middle water storage tank C is provided with a water suction pump I (16), the water suction pump I (16) is connected with a water distributor I (42), and the water distributor I (42) is positioned in the 2 nd biological zeolite aeration filter D.
5. The aquaculture tail water treatment and circulation device of claim 1, wherein: a biological zeolite packing layer II (41), a pebble bearing layer II (20) and a supporting filter plate II (21) are sequentially arranged in the 2 nd biological zeolite aeration filter D from top to bottom, a filter head I (18) is arranged between the pebble bearing layer II (20) and the supporting filter plate II (21), and a water suction pump II (22) is arranged at the bottom of the 2 nd biological zeolite aeration filter D.
6. The aquaculture tail water treatment and circulation device of claim 5, wherein: be equipped with water distributor II (43) in the active carbon rapid filtration pond E, water distributor II (43) link to each other with water absorption pump II (22), from the top down is equipped with granule active carbon filtering layer (44), gravel supporting layer II (25) and support backing plate (26) in the active carbon rapid filtration pond E in proper order, is equipped with filter head II (24) between gravel supporting layer II (25) and support backing plate (26).
7. The aquaculture tail water treatment and circulation device of claim 5, wherein: a tank B backwashing water inlet (12), a tank D backwashing water inlet (17), a tank E backwashing water inlet (23) and a tank F backwashing water inlet (37) are respectively formed below the 1 st biological zeolite aeration filter tank B, the 2 nd biological zeolite aeration filter tank D, the activated carbon rapid filter tank E and the clean water tank F, and the tank B backwashing water inlet (12), the tank D backwashing water inlet (17), the tank E backwashing water inlet (23) and the tank F backwashing water inlet (37) are connected with a backwashing water trunk (15).
8. The aquaculture tail water treatment and circulation device of claim 5, wherein: and the lower ends of the 1 st biological zeolite aeration filter B, the 2 nd biological zeolite aeration filter D and the activated carbon rapid filter E are also provided with air pipelines (14), and the air pipelines (14) are connected with an air compressor (11).
9. The aquaculture tail water treatment and circulation device of claim 3, wherein: a back-flushing drainage main pipe (28) is also arranged below the middle water storage tank C, the 2 nd biological zeolite aeration filter tank D, the activated carbon rapid filter tank E and the clean water tank F, and one end of the back-flushing drainage main pipe (28) penetrates through the middle water storage tank C and is arranged at an overflow weir (35); and a branch pipe I (48) and a branch pipe II (49) are also arranged on the back flushing drainage main pipe (28), the branch pipe I (48) is arranged in the middle water storage tank C, the end part of the branch pipe I (48) is arranged in the 2 nd biological zeolite aeration filter tank D, the branch pipe II (49) is arranged between the activated carbon rapid filter tank E and the clean water tank F, and the end part is arranged in the activated carbon rapid filter tank E.
10. An aquaculture tail water treatment and circulation device according to any one of claims 1-9, wherein: and ultraviolet disinfection equipment (47) is also arranged in the clean water tank F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020048826.6U CN211620290U (en) | 2020-01-10 | 2020-01-10 | Aquaculture tail water treatment and circulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020048826.6U CN211620290U (en) | 2020-01-10 | 2020-01-10 | Aquaculture tail water treatment and circulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211620290U true CN211620290U (en) | 2020-10-02 |
Family
ID=72636842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020048826.6U Expired - Fee Related CN211620290U (en) | 2020-01-10 | 2020-01-10 | Aquaculture tail water treatment and circulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211620290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018271A (en) * | 2020-01-10 | 2020-04-17 | 兰州理工大学 | Aquaculture tail water treatment and circulating device |
-
2020
- 2020-01-10 CN CN202020048826.6U patent/CN211620290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018271A (en) * | 2020-01-10 | 2020-04-17 | 兰州理工大学 | Aquaculture tail water treatment and circulating device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9045356B2 (en) | Sewage treatment process and system | |
| CN108503136B (en) | River channel treatment system | |
| CN109942156B (en) | Biological filter based mariculture tail water treatment system and application method thereof | |
| CN212770335U (en) | Ecological management system of tail water breeds | |
| CN205773937U (en) | A kind of ozone occurs and processing means | |
| CN109626763A (en) | A kind of system and method using group technology purification Lake Water | |
| CN112939381A (en) | Multi-efficiency combined biological filter | |
| CN211620290U (en) | Aquaculture tail water treatment and circulating device | |
| CN107352738A (en) | The composite artificial ecological bed waste water treatment system and method for a kind of intensified denitrification and dephosphorization | |
| CN111018271A (en) | Aquaculture tail water treatment and circulating device | |
| CN214115278U (en) | Utilize living beings solid carbon source to strengthen denitrification sewage treatment plant | |
| CN204174049U (en) | High concentration organic sewage purification combination unit | |
| CN210595462U (en) | Double-chamber artificial rapid infiltration sewage purification system | |
| CN209702393U (en) | Modified form bio-contact oxidation integrated sewage treating apparatus | |
| CN111039414B (en) | Biological purification system | |
| CN210711166U (en) | Villages and towns sewage treatment plant | |
| CN111908603A (en) | Novel anaerobic biological filter wastewater treatment equipment and wastewater treatment method thereof | |
| CN207567066U (en) | Sewage disposal device based on catalytic oxidation combination complex media filtration system | |
| CN108383238A (en) | A kind of bio-matrix biofilm pipeline infiltration sewage disposal system | |
| CN205710329U (en) | A kind of water treatment facilities | |
| CN215208974U (en) | Water body purification integrated system | |
| CN209957619U (en) | Sewage treatment system adopting biological active coke adsorption method | |
| CN105884130B (en) | A kind of laboratory process for treating waste liquor, system | |
| CN214781323U (en) | Tail water upgrading treatment device for effluent to express III-class water on earth surface | |
| CN218811170U (en) | High-efficient nitrogen and phosphorus removal integration sewage treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201002 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |