CN115124199A - Pond culture tail water circulating treatment device and method - Google Patents
Pond culture tail water circulating treatment device and method Download PDFInfo
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- CN115124199A CN115124199A CN202210893001.8A CN202210893001A CN115124199A CN 115124199 A CN115124199 A CN 115124199A CN 202210893001 A CN202210893001 A CN 202210893001A CN 115124199 A CN115124199 A CN 115124199A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a pond culture tail water circulation treatment device which comprises a settling area, a filtering area and a strengthening area, wherein the settling area is provided with a rotating packing chamber, a nylon rope net is laid on the surface of the filtering area, artificial waterweeds are hung below the nylon rope net, a plurality of rice hull filtering walls are arranged in the filtering area at intervals along the water flow direction, a metal hanging basket is arranged in the strengthening area and is positioned right below a water inlet, planting soil is laid at the bottom of the strengthening area, submerged plants are planted on the planting soil, a metal plate is buried in the planting soil, and the bottom surface of the metal hanging basket is connected with the metal plate through a wire. The invention also discloses a pond culture tail water circulating treatment method, which realizes the staged removal of culture tail water pollutants. Reasonably utilizes waste resources and has the advantage of treating waste by waste. Not easy to block and long in sustainable operation time. Simple operation and wide application range.
Description
Technical Field
The invention relates to the field of aquaculture tail water treatment, in particular to a pond aquaculture tail water circulating treatment device and a pond aquaculture tail water circulating treatment method.
Background
With the upgrade of the national requirements on the treatment and discharge of the culture tail water, the pond culture tail water is not treated, does not reach the standard and cannot be discharged in future. At present, aiming at pond culture tail water treatment, a 'three-pond two-dam' or 'four-pond three-dam' process is applied more, and the area ratio of a culture tail water treatment facility to a culture pond is maintained at 1: about 10, can obtain better treatment effect, so be applicable to the breed aquatics pond tail water treatment of concentrating the disjunctor. For the treatment of tail water of a dispersed culture pond, small-sized integrated treatment equipment, soil infiltration facilities, a lotus root pond, a paddy field and other treatment methods are used, the former treatment method is like the integrated treatment equipment, although the treatment effect is good, the daily treatment capacity is small, the operation and maintenance cost is high, the method is suitable for the treatment of rural sewage, the soil infiltration setting is large in occupied area, fillers in soil are easy to block after long-time operation, the conditions are just required for the treatment of the lotus root pond and the paddy field, and the application range is limited.
Therefore, in order to solve the above problems, it is necessary to provide a device and a method for treating tail water from pond culture, which can fully utilize the limited geographical and resource environments around the culture pond, and have good treatment effect, as well as have the advantages of low cost and long effect duration.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a pond culture tail water treatment device and a pond culture tail water circulation treatment method. The invention relates to a method for treating pond culture tail water with low cost, good continuous effect and wide application range, which is characterized in that a sedimentation area, a filtering area and a strengthening area are sequentially arranged on a land space with limited pond stalks along the water flow direction to purposefully remove over-standard substances in the culture tail water in a segmented manner, firstly, the adsorption effect of industrial waste fly ash and steel slag is utilized to remove total phosphorus, secondly, the material structure characteristics and the nutritional composition of agricultural waste rice hulls are reasonably exerted to accelerate the attachment of microorganisms and the growth of a biological membrane, thereby achieving the purpose of reducing the total nitrogen content, thirdly, forestry waste barks are taken as a carbon source in the strengthening area to strengthen the effect of broken tiles of construction waste and microorganisms on the surface of zeolite, and meanwhile, filter materials (barks, broken tiles and zeolite), submerged plants and sediment fuel cells (metal hanging baskets, water-collecting tanks, water-collecting and water-collecting tanks are arranged in the strengthening area, and the water-collecting tanks are arranged in the water-collecting tank Planting soil and a metal plate) to realize the efficient removal of heavy metals, organic matters, total nitrogen and total phosphorus, and a new method is found for solving the problem of pond culture tail water treatment.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a pond culture tail water circulation processing apparatus, including the settling zone, still include filtering area and intensive district, the settling zone, filtering area and intensive district are separated by two partition walls and are set gradually along the rivers direction, the settling zone is provided with and rotates the packing chamber, nylon rope net is laid on the filtering area surface, nylon rope net below is hung there is artifical pasture and water, be provided with a plurality of rice husk filter walls along rivers direction interval in the filtering area, be located under the water inlet in the intensive district, it has the bark to be provided with inside packing, the metal of chip tile and zeolite hangs the basket, the metal is hung the basket setting on the support, it has planting soil to be laid to strengthen the district bottom, it has benthophyte to plant on the soil, the metal sheet has been buried underground in the planting soil, the metal of metal string basket bottom surface is connected through the wire with the metal ring of metal sheet upper surface.
The rotating packing chamber is in an annular column shape and comprises an outer ring metal reticulated shell and an inner ring metal reticulated shell, fan blades are arranged on the outer ring metal reticulated shell, the rotating shaft is located at the central shaft of the inner ring metal reticulated shell, the outer ring and the inner ring of the ball bearing are respectively connected with the inner ring metal reticulated shell and the rotating shaft, the outer ring metal reticulated shell and the inner ring metal reticulated shell are sequentially filled with fly ash and steel slag, and two ends of the rotating shaft are arranged in a slide way in the middle of the sedimentation zone partition wall.
The end parts of the nylon rope net are connected with the L-shaped hooks on the partition wall, the middle part of the nylon rope net is fixed on the fixed rod, and the two ends of the fixed rod are fixed in the circular pore channels of the side walls of the two filtering areas of the filtering area vertical to the water flow direction.
As mentioned above, the circular pore canals are arranged in a plurality of rows at different heights on the side wall of the filtering area, the L-shaped hooks and the circular pore canals positioned at the lowest row on the side wall of the filtering area are lower than the normal water level of the filtering area, and the height of the rice hull filtering wall is lower than the normal water level of the filtering area.
As mentioned above, the bark is 5 cm-8 cm thick, the broken tiles are 8 cm-15 cm thick, the zeolite is 5 cm-10 cm thick, the bark, the broken tiles and the zeolite are sequentially paved in the metal hanging basket from top to bottom, and the top surface of the metal hanging basket is lower than the water inlet of the strengthening area and higher than the water outlet of the strengthening area.
As mentioned above, the partition wall is provided with the overflow hole, the middle part of the overflow hole is provided with the perforated plastic plate, and the perforated plastic plate is provided with the round hole and the pull ring.
The bracket insulation is supported at the bottom of the reinforced section through the metal plate as described above.
A pond culture tail water circulating treatment method comprises the following steps:
step 3, periodically observing the falling conditions of the biological membranes in a rotating filling chamber, the artificial waterweeds, the rice hull filter wall and the metal hanging basket of the settling zone every week, and stopping pumping water if the biological membranes fall;
step 4, after natural airing for 3-5 days, continuously repeating the steps 1, 2 and 3;
and 5, replacing the fly ash and the steel slag once every 3 months, replacing the rice hull filter wall once every 2 months, replacing the bark once every 3 months, and replacing the broken tiles and the zeolite once every 6 months.
Compared with the prior art, the invention has the following beneficial effects:
1. realizes the staged removal of the culture tail water pollutants.
2. Reasonably utilizes waste resources and has the advantage of treating waste by waste.
3. The device is not easy to block and has long continuous operation time.
4. Simple operation and wide application range.
Drawings
FIG. 1 is a plan view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a strengthened region of the present invention;
FIG. 4 is a cross-sectional view of a rotating packing chamber;
FIG. 5 is a connection diagram of a rotating packing chamber and a circular duct;
fig. 6 is an elevational view of a perforated plastic sheet.
In the figure, 1-partition wall; 11-a slide; 12-an overflow aperture; 13-perforated plastic plate; 131-circular holes; 132-a pull ring; 14-circular pore canal; 2-rotating the packing chamber; 21-outer ring metal reticulated shell; 22-fly ash; 23-steel slag; 24-a ball bearing; 25-a rotating shaft; 26-fan blades; 27-inner ring metal reticulated shell; 31-L-shaped hooks; 32-nylon rope net; 33-artificial water plants; 34-a fixing rod; 35-rice hull filter wall; 40-bark of tree; 41-broken tiles; 42-zeolite; 43-a metal hanging basket; 44-a scaffold; 45-submerged plants; 46-planting soil; 47-a metal ring; 48-a wire; 49-metal plate; 51-a precipitation zone; 52-a filtration zone; 53-a strengthening zone; 54-pond ridge.
Detailed Description
The present invention will be described in further detail with reference to examples for the purpose of facilitating the understanding and practice of the invention by those of ordinary skill in the art, and the examples described herein are intended to be illustrative and explanatory only and are not restrictive of the invention.
Example 1:
a pond culture tail water circulation treatment device is sequentially provided with a sedimentation area, a filtration area and a strengthening area along the water flow direction, three subareas (the sedimentation area, the filtration area and the strengthening area) are separated by two partition walls 1, adjacent subareas are communicated through overflow holes 12 on the partition walls 1, a perforated plastic plate 13 is arranged in the middle of the overflow holes 12, the perforated plastic plate 13 is used for blocking garbage, changing water flow and increasing dissolved oxygen, wherein a rotary filling chamber 2 filled with fly ash 22 and steel slag 23 is arranged in the sedimentation area, a nylon rope net 32 is laid on the surface of the filtration area, artificial waterweeds 33 are hung below the nylon rope net 32, rice hull filtration walls 35 are arranged in the inner area of the filtration area at intervals along the water flow direction, the rice hull filtration walls 35 are vertical to the water flow direction, a metal hanging basket 43 filled with barks 40, broken tiles 41 and zeolites 42 is arranged in the strengthening area under a water inlet, the rectangular metal hanging basket 43 is arranged on the support 44, planting soil 46 is paved at the bottom of the strengthening area, submerged plants 45 are planted, a metal plate 49 is placed under the bottom of the rectangular metal hanging basket 43, and a metal ring 47 on the bottom surface of the rectangular metal hanging basket 43 is connected with a metal ring 47 on the upper surface of the metal plate 49 through a lead 48. The support 44 is supported at the bottom of the reinforced section through a metal plate 49 in an insulated manner. In another embodiment, the bracket 44 is made of a non-metallic material, such as polypropylene.
The rotary packing chamber 2 is in an annular column shape, the rotary packing chamber 2 comprises an outer ring metal reticulated shell 21 and an inner ring metal reticulated shell 27, fan blades 26 are arranged on the outer ring metal reticulated shell 21, the inner ring metal reticulated shell 27 is arranged on a rotating shaft 25 through a ball bearing 24, the rotating shaft 25 is positioned at the central shaft of the inner ring metal reticulated shell 27, the outer ring and the inner ring of the ball bearing 24 are respectively connected with the inner ring metal reticulated shell 27 and the rotating shaft 25, the outer ring metal reticulated shell 21 and the inner ring metal reticulated shell 27 are sequentially filled with fly ash 22 and steel slag 23, two ends of the rotating shaft 25 are arranged in a slideway 11 in the middle of the partition wall 1 of the settling zone, the slideway 11 comprises a transverse slideway and a longitudinal slideway which are communicated, the rotating shaft 25 can slide into the transverse slideway from the longitudinal slideway, and the rotary packing chamber 2 can move and rotate in the slideway 11 under the action of water flow. The reoxygenation efficiency of the rotary packing chamber 2 can be increased, and the dephosphorization effect of the microorganisms is improved.
The overflow holes 12 decrease in height in the water flow direction.
The perforated plastic plate 13 is provided with a circular hole 131, the diameter of the circular hole 131 is 5 mm-8 mm, and the surface of the perforated plastic plate 13 is provided with a pull ring 132.
The two ends of the nylon rope net 32 are respectively connected to the L-shaped hooks 31 of the partition walls 1 at the two ends of the filtering area, the middle of the nylon rope net 32 is fixed on the fixing rod 34, the length of the fixing rod 34 is adjustable, the two ends of the fixing rod 34 are fixed in circular pore channels 14 of the two filtering area side walls, perpendicular to the water flow direction, of the filtering area, the circular pore channels 14 are arranged on the filtering area side walls in a multi-row mode at different heights, the L-shaped hooks 31 and the circular pore channels 14 located at the lowest row of the filtering area side walls are slightly lower than the filtering area normal water level, the thickness of the rice hull filtering wall 35 is 15 cm-30 cm, and the height of the rice hull filtering wall is lower than the filtering area normal water level.
The rice husk can provide required nutrient substance for the microorganism at the decomposition in-process, increase nylon cord net 32, the growth rate of biomembrane among artificial pasture and water 33 and the rice husk filter wall 35, fix dead lever 34 in last row circular pore 14, can increase nylon cord net 32, artificial pasture and water 33 and air area of contact, the renewal of biomembrane is helped to this kind of wet and dry alternative environment, it is in order to increase the area of contact with rivers to arrange artificial pasture and water 33 and rice husk filter wall 35, promote the denitrogenation effect.
The bark 40 is 5-8 cm thick, the broken tiles 41 are 8-15 cm thick, the zeolite 42 is 5-10 cm thick, the bark is laid in the rectangular metal hanging basket 43 from top to bottom, the top surface of the rectangular metal hanging basket 43 is lower than the water inlet of the strengthening area by 3-5 cm and higher than the water outlet of the strengthening area by 3-5 cm, and the bottom surface of the rectangular metal hanging basket 43 keeps a certain distance from the bottom of the strengthening area.
The bark 40 can be used as a carbon source to provide nutrition for the growth of microorganisms on the broken tiles 41 and the zeolite 42, and can adsorb heavy metal ions, the rectangular metal hanging basket 43 keeps a certain distance from the bottom of the strengthening area, the top surface of the rectangular metal hanging basket 43 is arranged between the water inlet and the water outlet of the strengthening area, so that blockage is prevented, an aerobic and anaerobic environment is kept, the rectangular metal hanging basket 43 is replaceable, and the running time is greatly prolonged.
The submerged plant 45 preferably adopts eel grass, the planting soil 46 directly adopts bottom mud of the culture pond, and the thickness of the planting soil is 25 cm-30 cm.
The metal plate 49 is arranged in the planting soil 46, and the distance from the top of the planting soil 46 is 5 cm-15 cm.
Submerged plants and sediment microorganisms are coupled electrochemically, the planting soil 46 is in an anaerobic environment, organic matters are decomposed under the action of the microorganisms to release electrons, the electrons are transmitted to the metal plate 49 through a lead to the bottom of a rectangular metal frame (which can be understood as an anode and an aerobic environment) to perform reduction reaction, and mainly the movement of the electrons is accelerated, the growth of the plants is promoted, and the decomposition of organic matters in bottom mud is accelerated.
The metal mentioned in this embodiment may be stainless steel.
Example 2:
a pond culture tail water circulation treatment method, which is the pond culture tail water circulation treatment device described in embodiment 1, and comprises the following steps:
And 2, removing the temporary plug of the water outlet of the strengthening area, normally pumping water by the water pump, and controlling the pumping speed of the water pump to ensure that the flow velocity of water flow in the settling area, the filtering area and the strengthening area is maintained at 0.1-0.5 m/s.
And 3, periodically observing the falling conditions of the biological membranes in the rotating filling chamber 2 of the settling zone, the artificial waterweeds and rice hull filter wall 35 of the filtering zone and the rectangular metal hanging basket 43 of the strengthening zone every week, and stopping pumping water if the biological membranes fall off, namely floating the biological membranes on the surface of the water body.
And 4, after natural airing for 3-5 days, continuously repeating the steps 1, 2 and 3.
In the embodiment, the continuous treatment time of the step 1 in a still water state is 5-7 d, so that the microorganisms can grow better, and the rapid biofilm formation of the microorganisms on the matrix or the filler is facilitated.
In this example, the water flow rate was maintained at 0.1m/s to 0.5m/s in step 2 in order to maintain the thickness and the total amount of the microbial film at a high level.
In this embodiment, the natural air-drying is selected for 3-5 days in step 4 to accelerate the aging and falling of the biofilm.
It should be finally noted that the above examples are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and that other variations and modifications based on the above description and thought may be made by those skilled in the art, and that all embodiments need not be exhaustive. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. A pond culture tail water circulation treatment device comprises a sedimentation area and is characterized by further comprising a filtering area and a strengthening area, wherein the sedimentation area, the filtering area and the strengthening area are separated by two partition walls (1) and are sequentially arranged along the water flow direction, the sedimentation area is provided with a rotating filling chamber (2), a nylon rope net (32) is laid on the surface of the filtering area, artificial aquatic plants (33) are hung below the nylon rope net (32), a plurality of rice hull filtering walls (35) are arranged in the filtering area at intervals along the water flow direction, a metal hanging basket (43) filled with barks (40), broken tiles (41) and zeolites (42) is arranged in the strengthening area and is positioned right below a water inlet, the metal hanging basket (43) is arranged on a support (44), planting soil (46) is laid at the bottom of the strengthening area, submerged plants (45) are planted on the planting soil (46), and a metal plate (49) is buried in the planting soil (46), the metal ring (47) on the bottom surface of the metal hanging basket (43) is connected with the metal ring (47) on the upper surface of the metal plate (49) through a lead (48).
2. The pond culture tail water circulation treatment device according to claim 1, characterized in that the rotary filler chamber (2) is in an annular column shape, the rotary filler chamber (2) comprises an outer ring metal reticulated shell (21) and an inner ring metal reticulated shell (27), fan blades (26) are arranged on the outer ring metal reticulated shell (21), a rotating shaft (25) is located at a central shaft of the inner ring metal reticulated shell (27), an outer ring and an inner ring of a ball bearing (24) are respectively connected with the inner ring metal reticulated shell (27) and the rotating shaft (25), the outer ring metal reticulated shell (21) to the inner ring metal reticulated shell (27) are sequentially filled with fly ash (22) and steel slag (23), and two ends of the rotating shaft (25) are arranged in a slide way (11) in the middle of the sedimentation zone partition wall (1).
3. The pond culture tail water circulation treatment device according to claim 2, characterized in that the end part of the nylon rope net (32) is connected with an L-shaped hook (31) on the partition wall (1), the middle part of the nylon rope net (32) is fixed on a fixed rod (34), and the two ends of the fixed rod (34) are fixed in circular pore channels (14) of the two filtering area side walls of the filtering area, which are perpendicular to the water flow direction.
4. The pond culture tail water circulation treatment device according to claim 3, wherein the circular pore canals (14) are arranged on the side wall of the filtering area in a plurality of rows at different heights, the L-shaped hooks (31) and the circular pore canals (14) positioned at the lowest row on the side wall of the filtering area are lower than the normal water level of the filtering area, and the rice hull filtering walls (35) are lower than the normal water level of the filtering area.
5. The pond culture tail water circulation treatment device according to claim 4, wherein the bark (40) is 5-8 cm thick, the broken tiles (41) are 8-15 cm thick, the zeolite (42) is 5-10 cm thick, the bark (40), the broken tiles (41) and the zeolite (42) are sequentially laid in a metal hanging basket (43) from top to bottom, and the top surface of the metal hanging basket (43) is lower than a water inlet of the strengthening area and higher than a water outlet of the strengthening area.
6. A pond culture tail water circulation treatment device according to claim 5, characterized in that an overflow hole (12) is formed in the partition wall (1), a perforated plastic plate (13) is arranged in the middle of the overflow hole (12), and a circular hole (131) and a pull ring (132) are formed in the perforated plastic plate (13).
7. A pond culture tail water circulation treatment device according to claim 6, characterized in that the bracket (44) is supported at the bottom of the strengthening area by insulating through metal plates (49).
8. A pond culture tail water circulation treatment method and a pond culture tail water circulation treatment device according to claim 7 are utilized, and the pond culture tail water circulation treatment device is characterized by comprising the following steps:
step 1, temporarily blocking a water outlet of a strengthening area, directly pumping pond culture tail water into a settling area by using a water pump, and enabling the pond culture tail water to sequentially flow through a filtering area and the strengthening area, so that the settling area, the filtering area and the strengthening area are kept at set water levels and the pond culture tail water lasts for 5-7 days in a still water state;
step 2, removing the temporary plug of the water outlet of the strengthening zone, normally pumping water by a water pump, and controlling the pumping speed of the water pump so as to maintain the flow velocity of water flow in the settling zone, the filtering zone and the strengthening zone at 0.1-0.5 m/s;
step 3, periodically observing the falling condition of the biological membranes in the rotating filling chamber (2), the artificial waterweeds, the rice hull filter wall (35) and the metal hanging basket (43) of the settling zone every week, and stopping pumping water if the biological membranes fall;
step 4, after natural airing for 3-5 days, continuously repeating the steps 1, 2 and 3;
and 5, replacing the fly ash (22) and the steel slag (23) once every 3 months, replacing the rice hull filter wall (35) once every 2 months, replacing the bark (40) once every 3 months, and replacing the broken tiles (41) and the zeolite (42) once every 6 months.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210893001.8A CN115124199A (en) | 2022-07-27 | 2022-07-27 | Pond culture tail water circulating treatment device and method |
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| CN202210893001.8A CN115124199A (en) | 2022-07-27 | 2022-07-27 | Pond culture tail water circulating treatment device and method |
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| CN115124199A true CN115124199A (en) | 2022-09-30 |
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| CN202210893001.8A Withdrawn CN115124199A (en) | 2022-07-27 | 2022-07-27 | Pond culture tail water circulating treatment device and method |
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Cited By (1)
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|---|---|---|---|---|
| CN115849550A (en) * | 2022-10-20 | 2023-03-28 | 同济大学 | Low-energy-consumption segmented artificial rapid infiltration system for enhancing sewage treatment efficiency of villages and towns |
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