CN110627274B - Aquaculture wastewater treatment device and treatment method - Google Patents
Aquaculture wastewater treatment device and treatment method Download PDFInfo
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- CN110627274B CN110627274B CN201910904926.6A CN201910904926A CN110627274B CN 110627274 B CN110627274 B CN 110627274B CN 201910904926 A CN201910904926 A CN 201910904926A CN 110627274 B CN110627274 B CN 110627274B
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- 244000144974 aquaculture Species 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 209
- 239000010865 sewage Substances 0.000 claims abstract description 82
- 238000000926 separation method Methods 0.000 claims abstract description 75
- 238000000605 extraction Methods 0.000 claims abstract description 52
- 238000000746 purification Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims description 84
- 239000002002 slurry Substances 0.000 claims description 39
- 238000001914 filtration Methods 0.000 claims description 34
- 239000007787 solid Substances 0.000 claims description 22
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
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- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/10—Devices for removing the material from the surface
-
- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/003—Coaxial constructions, e.g. a cartridge located coaxially within another
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/008—Mobile apparatus and plants, e.g. mounted on a vehicle
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Organic Chemistry (AREA)
- Marine Sciences & Fisheries (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses an aquaculture wastewater treatment device and a treatment method, belonging to the technical field of water body treatment, wherein the device comprises: the discarded object collection subassembly, locate aquaculture water body top, land-based water purification subassembly, locate ground, land-based water purification subassembly passes through the sewer line and is connected with the discarded object collection subassembly, the discarded object collection subassembly includes the body, be equipped with the separator box on the body, be equipped with first slush pump and second slush pump in the body respectively, first slush pump is connected with the extraction of second extraction pipe and breeds submarine portion discarded object, first slush pump and second slush pump are connected with the separator box respectively, the separator box is to the discarded object solid-liquid separation of extraction, sewage is discharged to land-based water purification subassembly by the sewer line who connects in the separator box bottom. The invention realizes the wastewater treatment by using mechanical equipment, has large wastewater treatment capacity, effectively prevents the suspension of pollutants at the bottom of the aquaculture water in the wastewater treatment process, and has high removal rate of suspended matters in the wastewater.
Description
Technical Field
The invention belongs to the technical field of water body treatment, and particularly relates to an aquaculture wastewater treatment device and method.
Background
The world aquaculture production has increased rapidly since the 70's of the 20 th century and the proportion in aquaculture is increasing. The history of aquiculture Chinese freshwater aquaculture dates back to 11 th century before the Gongyuan. The "fish culture" was published 5 th century before the Yuan. There are two main types of freshwater aquaculture: firstly, the cyprinid fishes are intensively cultured in the pond to obtain high yield by feeding and fertilizing, and various fishes with different feeding properties are mixedly cultured to give full play to the productivity of the water body. The other type is to breed seedlings in large and medium-sized water areas such as lakes, reservoirs, ditches, rice fields and the like, and aquatic products are obtained mainly by means of natural baits. In 1986, the freshwater aquaculture area in China is about 4600 ten thousand mu (about 61 percent of the available aquaculture area), wherein the pond accounts for 35 percent and is concentrated in the middle and lower reaches of Yangtze river and the Yangtze delta; lakes account for 17% and are mainly in the middle and lower reaches of the Yangtze river and in northeast and inner Mongolia areas; the reservoirs account for 37 percent and are distributed nationally; the river channel accounts for 9 percent and is mainly located in water network areas of Jiangsu and Zhejiang. The total output of fresh water culture is the first world for years, the total output is increased at a speed of about 22 percent, and the output is 295 ten thousand tons in 1986, which accounts for 36 percent of the total output of aquatic products in China. Wherein the pond accounts for 74 percent, the reservoir accounts for 8 percent, and the rest is the yield of lakes, rivers and ditches and paddy fields, and the aquaculture has modes of rough culture, intensive culture, high-density intensive culture and the like. The rough culture is to put seedlings in medium and small natural waters and to culture aquatic products such as fish in lakes and reservoirs, shellfish in shallow seas and the like by completely relying on natural baits. Intensive culture is to culture aquatic products such as pond fish culture, net cage fish culture, fence culture and the like in a small water body by using bait casting and fertilizing methods. The high-density intensive culture adopts methods of flowing water, controlling temperature, increasing oxygen, feeding high-quality baits and the like to carry out high-density culture in a small water body so as to obtain high yield, such as flowing water high-density fish culture, shrimp culture and the like. On one hand, pollution in the breeding environment restricts the development of breeding industry, and on the other hand, the discharge of pollutants can not be treated in time, so that the water quality is deteriorated, and the balance of a breeding ecological system is seriously influenced.
Most sewage systems in the existing market need manual cleaning at regular time due to overlarge water bottom area, waste time and labor, especially, the oxygen with high temperature in summer is not enough, the temperature of the sewage systems cannot be relieved, pollutants in the pond cannot be timely solved, the pollutants are easy to deteriorate and cause germ infection to breed, heavy loss is brought, and heat energy in the cleaned pond bottom waste cannot be effectively utilized in the conventional water treatment process.
Disclosure of Invention
The invention aims to provide an aquaculture wastewater treatment device and method, which can be used for realizing wastewater treatment by using mechanical equipment, have large wastewater treatment capacity, effectively prevent pollutants from suspending at the bottom of aquaculture water in the wastewater treatment process and have high removal rate of suspended matters in the wastewater.
The technical scheme adopted by the invention for realizing the purpose is as follows: an aquaculture wastewater treatment plant comprising:
a waste collection component which is arranged above the culture water body,
a land-based water purification component arranged on the ground, the land-based water purification component is connected with the waste collection component through a sewage pipeline,
the waste collection assembly comprises a floating body, a separation box is arranged on the floating body, a first slurry pump and a second slurry pump are respectively arranged in the floating body, the first slurry pump is connected with a second extraction pipe to extract waste at the bottom of the cultivation, the second slurry pump is connected with a first extraction pipe, the length of the first extraction pipe is shorter than that of the second extraction pipe, the first slurry pump and the second slurry pump are respectively connected with the separation box, the separation box performs solid-liquid separation on the extracted waste, and sewage is discharged to the land-based water purification assembly through a sewage pipeline connected to the bottom of the separation box.
The invention realizes mechanical operation by arranging the waste collection component in the culture water area, supports the waste collection component to float on the water surface by the buoyancy provided by the floating body, directly collects the waste at the bottom of the culture water area by utilizing the waste collection component and primarily separates solid and liquid, reduces the labor intensity of manual operation, conveys the separated sewage to the land-based water purification component for further treatment, realizes sewage discharge work for the culture water area, improves culture benefit, can realize comprehensive sewage discharge treatment for the culture water area by arranging a plurality of waste collection components in the culture water area, improves sewage discharge amount, prevents the water quality from being deteriorated due to resuspension caused by the influence of sewage discharge on the waste at the bottom of the culture water body in the sewage discharge process, collects the waste at different height layers at the bottom of the culture water body by respectively arranging the second extraction pipe and the first extraction pipe, and particularly controls the height difference between 7cm and 15 cm, the water body disturbance caused when the second extraction pipe extracts the underwater waste generates shearing force to act on the deposited waste to enable the sediment to generate dynamic change, the first extraction pipe with the horizontal height higher than that of the second extraction pipe is used for sucking suspended matters formed by the disturbance, and the shearing force of the fluctuating water flow generated by the extraction of the waste by the second extraction pipe is weakened.
Designing according to a fluid shear force calculation formula: the height difference between the second extraction pipe and the first extraction pipe is controlled to be 7-15 cm, so that the weakening of the shearing force of the fluctuating water flow during waste extraction is realized, and the resuspension rate of the waste is reduced.
The formula for calculating the fluid shear force used is:
in the formula: tau iscThe unit is Pa which is the shearing force generated by the water flow on the surface layer of the water bottom; cdThe traction coefficient is 3.1 × 10-3；ρwThe density of the water body is 1.0 multiplied by 103kg/㎡；RcFor different water flow boundary flow velocities, the water density in the formula refers to fresh water density, and if the applicable object is seawater, the value is 1.025 × 103kg per square meter; the different water flow boundary flow rates in the formula refer to the flow rates of the water flows of the horizontal height layers where the suction ports of the second extraction pipe and the first extraction pipe are located.
Specifically, the second slurry pump is connected with the separation box through a second connecting pipe, and the first slurry pump is connected with the separation box through a first connecting pipe. And the second slurry pump and the first slurry pump provide suction to suck the underwater waste, and the sucked waste and the water body mixture are respectively conveyed into the separation tank through the second connecting pipe and the first connecting pipe to carry out a solid-liquid separation process.
Specifically, an inclined sieve plate is arranged in the separation box, two side faces of the sieve plate are connected with the wall of the separation box, the upper end of the inclined end of the sieve plate is connected with the wall of the separation box, the bottom end of the inclined end of the sieve plate is connected with the bottom of the separation box through a partition plate, and the sieve plate is used for solid-liquid separation of waste fed into the separation box by the first slurry pump and the second slurry pump. The waste and the water mixture are sent into the separation box and then fall on the surface of the sieve plate, the sieve plate is utilized to carry out solid-liquid separation on the mixture, the separated sewage falls into the bottom space of the sieve plate, the separated solid slides along the sieve plate and falls into the space on one side of the sieve plate, and the separation of the separated sewage and the separated solid storage space is realized by arranging the sieve plate and the separation plate in a connecting way, so that the secondary mixing is avoided.
Specifically, the sewage pipeline is communicated with the bottom of the separation box at the lower part of the sieve plate, and a guide block is arranged near the communication port and used for guiding the water body to the communication port. The sewage pipeline directly collects sewage in the space below the sieve plate and sends the sewage into the land-based water purification assembly along the sewage pipeline to further carry out a water treatment process, and the sewage enters the sewage pipeline through the guide block and is guided to enter the sewage pipeline along the surface of the guide block for improving the efficiency of the sewage entering the sewage pipeline and avoiding excessive gathering of the sewage in the separation box.
Specifically, the sieve plate is formed by mutually connecting flexible plate bodies with sieve pores uniformly distributed on the surface, and the joints of the flexible plate bodies are Z-shaped. The flexible plate body is selected to realize that the flexible plate body generates arc deformation according to the weight when the waste falls on the surface of the sieve plate, so that the waste moves on the surface of the sieve plate which is deformed to form an arc surface, the waste with overhigh water content can stay at the bottom end of the arc surface of the sieve plate for a long time by utilizing the gravity center principle until water in the waste is continuously filtered out, the waste with reduced water content can slide downwards along the sieve plate with the recovered shape after the sieve plate is deformed and rebounded, the waste falls on one side of the partition plate to separate a solid-liquid collecting area, meanwhile, the accumulation of the separated solids is favorable for gathering the internal energy of the extracted solids to benefit the subsequent fermentation treatment work of the separated solids, wherein the area of the arc surface which generates the arc deformation downwards when the sieve plate is weighted is enlarged by arranging the connection part between the flexible plates to be in a Z-shaped structure, and the stay time of the waste on the surface of the sieve plate is prolonged, the solid-liquid separation efficiency is improved.
Specifically, the rollers are arranged above the sieve plate and driven by a motor arranged on one side of the separation box, a sewage discharge outlet for discharging solid separators is arranged on one side of the separation box, and an ultraviolet lamp is further arranged in the separation box. For avoiding still having the long-time circumstances that causes piling up of heavier weight and stopping on the sieve surface after the discarded object drainage and appearing, play the pushing action to the discarded object through setting up the gyro wheel, prevent to appear the accumulational circumstances of discarded object on the sieve and appear, and set up the drain on one side of separator box and be used for getting rid of the less discarded object of moisture content that obtains the inside solid-liquid separation of separator box and carry out follow-up fermentation or other forms and handle, and carry out certain bactericidal treatment through set up the ultraviolet lamp in the separator box in to the separator box, reduce the bacterial quantity of handling sewage.
Specifically, land-based water purification subassembly includes the first water pump of being connected with the sewer line, first water pump is connected with the drainage tank, the drainage tank passes through the body and is connected with the setting tank, the setting tank is discharged the water by drainage pipe, land-based water purification subassembly that will be used for water treatment sets up on the bottom surface, so that obtain great processing space, and avoid locating the cultivation surface of water with land-based water purification subassembly and cause the reduction of cultivation surface of water illumination area, extract work in to the sewer line through setting up first water pump, guarantee that sewage normally gets into and carries out water purification work in drainage tank and the setting tank.
Specifically, lay the cobble layer in proper order by the end of intaking to the play water end in the drainage case, zeolite layer, sand bed, cotton layer, activated carbon layer, filtration membrane, utilize filtering material to carry out filtration treatment step by step to sewage, realize progressively holding back solid particle and a certain amount of pollution element through arranging the order between the filtering material, the filtering material of arranging in the practice surface drainage incasement can reach the filtering effect to the solid particle more than 0.01mm in the sewage to the filtration effect can further be reduced according to the filtration pore aperture of the filtration membrane of chooseing for use.
Specifically, guide plates are arranged in the settling tank at intervals in a staggered mode, so that water body flows in the settling tank in a winding and spiral mode, one side of the settling tank is connected with an ozone generator through an air pipe, and the air outlet direction of the air pipe is opposite to the flow direction of water flow. The air outlet of trachea is located precipitation tank upper portion space, it makes the water wriggle to flow in the precipitation tank to set up the guide plate through the precipitation tank, the dwell time of extension water in the precipitation tank, and reduce the bacterial quantity of the water that handles and reachs through carrying out the germicidal treatment with ozone input water in, and the input of ozone can form certain choked flow effect to the water velocity of flow in the precipitation tank, reduce the velocity of flow of water in the precipitation tank, further the dwell time of extension water in the precipitation tank improves the settlement effect of the superfine particulate matter in the water.
An aquaculture wastewater treatment method comprises the following steps:
respectively extracting the wastes of different height layers of the culture water bottom layer by adopting a second extraction pipe and a first extraction pipe which are different in length to obtain the wastes of different water layers;
the obtained waste and water body mixture are sent into a separation box through a first slurry pump and a second slurry pump to carry out solid-liquid separation on the extracted waste, a sieve plate is used for intercepting separated solids, the separated water body is subjected to water filtration treatment, and the separated sewage is sent to a land-based water purification assembly on the bottom surface for water filtration treatment by a sewage pipeline when the water body falls to the space at the bottom of the sieve plate;
sewage gets into and firstly goes into the water filter tank after the land-based water purification subassembly and carries out the drainage, and the filter material through the water filter tank carries out filtration treatment step by step with sewage and sends into the settling tank in with sewage and carry out sedimentation treatment, and the water inputs ozone in sedimentation treatment in-process and carries out germicidal treatment to the water, and ozone input direction is opposite with sedimentation in-process water flow direction, delays the dwell time and the flow velocity of water in the settling tank.
And discharging the water body after the water purification is finished through a drainage pipeline.
Compared with the prior art, the invention has the beneficial effects that: the invention sets the waste collection component in the culture water area, the floating body provides buoyancy to support the waste collection component to float on the water surface, the waste at the bottom of the culture water area is directly collected and primarily separated by the waste collection component, mechanical operation is realized, labor intensity of manual operation is reduced, the separated sewage is conveyed to the land-based water purification component for further treatment, sewage discharge work is realized for the culture water area, culture benefit is improved, comprehensive sewage discharge treatment can be realized for the culture water area by arranging the waste collection components in the culture water area, sewage discharge amount is improved, water quality deterioration caused by resuspension of the waste at the bottom of the culture water body due to influence of sewage discharge in the sewage discharge process is prevented, and the waste at different height layers at the bottom of the culture water body is collected by respectively arranging the second extraction pipe and the first extraction pipe.
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 the drawings without creative efforts.
FIG. 1 is a schematic view of the state of use of the aquaculture wastewater treatment plant of the present invention;
FIG. 2 is a schematic view of an aquaculture wastewater treatment plant of the present invention;
FIG. 3 is a schematic view of the waste collection assembly of the present invention;
FIG. 4 is a schematic view of the interior of the separator tank of the present invention;
figure 5 is a schematic view of the screen deck structure of the present invention;
FIG. 6 is a schematic view of the interior of the water filter tank of the present invention;
FIG. 7 is a schematic view of the interior of the settling tank of the present invention;
FIG. 8 is a graph showing the dynamic course of the sediment resuspension amount of test group 1;
fig. 9 is a graph showing the dynamic course of the sediment resuspension amount of experimental group 2.
Description of reference numerals: 100-a waste collection assembly; 200-a sewage conduit; 300-land-based water purification components; 10-a separation box; 11-a sewage draining outlet; 12-an ultraviolet lamp; 13-a roller; 14-sieve plate; 141-a flexible plate body; 142-mesh; 15-a partition plate; 16-a guide block; 20-a float; 30-a first extraction duct; 31-a second mud pump; 32-a second connecting tube; 40-a second extraction tube; 41-a first mud pump; 42-a first connection pipe; 50-a first water pump; 60-a water filtering tank; 61-pebble layer; 62-a sand layer; 63-an activated carbon layer; 64-a filter membrane; 65-a cotton layer; 66-a zeolite layer; 70-a settling tank; 71-a drainage pipeline; 72-a baffle; 73-drainage holes; 74-the trachea; 75-ozone generator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-7, an aquaculture wastewater treatment apparatus comprising:
a waste collection assembly 100 disposed above the aquaculture water,
a land-based water purification unit 300 installed on the ground, the land-based water purification unit 300 being connected to the waste collection unit 100 through the sewage conduit 200,
the waste collection assembly 100 comprises a floating body 20, a separation box 10 is arranged on the floating body 20, a first slurry pump 41 and a second slurry pump 31 are respectively arranged in the floating body 20, the first slurry pump 41 is connected with a second extraction pipe 40 to extract waste at the bottom of the aquaculture water, the second slurry pump 31 is connected with a first extraction pipe 30, the length of the first extraction pipe 30 is shorter than that of the second extraction pipe 40, the first slurry pump 41 and the second slurry pump 31 are respectively connected with the separation box 10, the separation box 10 is used for carrying out solid-liquid separation on the extracted waste, and sewage is discharged to the land-based water purification assembly 300 through a sewage pipeline 200 connected to the bottom of the separation box 10.
The invention sets the waste collection component 100 in the culture water area, the floating body 20 provides buoyancy to support the waste collection component 100 to float on the water surface, the waste at the bottom of the culture water area is directly collected and primarily separated by the waste collection component 100, mechanical operation is realized, labor intensity of manual operation is reduced, the separated sewage is conveyed to the land-based water purification component 300 for further treatment, sewage discharge work is realized on the culture water area, culture benefit is improved, comprehensive sewage discharge treatment can be realized by arranging a plurality of waste collection components 100 in the culture water area, sewage discharge amount is improved, in order to prevent the waste at the bottom of the culture water body from resuspension caused by the influence of sewage discharge in the sewage discharge process, water quality deterioration is caused, and the waste at different height layers at the bottom of the culture water body is collected by respectively arranging the second extraction pipe 40 and the first extraction pipe 30, the height difference between the second extraction pipe 40 and the first extraction pipe 30 is controlled to be 7-15 cm, the specific value is selected according to the actual situation, the water body disturbance caused when the second extraction pipe 40 extracts underwater waste generates shearing force to act on the deposited waste to enable the sediment to generate dynamic change, the first extraction pipe 30 with the horizontal height higher than that of the second extraction pipe 40 is used for absorbing suspended matters formed by the disturbance, and the shearing force of the fluctuating water flow generated by the waste extracted by the second extraction pipe 40 is weakened.
Designing according to a fluid shear force calculation formula: the height difference between the second extraction pipe 40 and the first extraction pipe 30 is controlled to be 7-15 cm, so that the shearing force of the fluctuating water flow during waste extraction is weakened, and the waste resuspension rate is reduced.
The formula for calculating the fluid shear force used is:
in the formula: tau iscThe unit is Pa which is the shearing force generated by the water flow on the surface layer of the water bottom; cdThe traction coefficient is 3.1 × 10-3；ρwThe density of the water body is 1.0 multiplied by 103kg/㎡；RcFor different water flow boundary flow velocities, the water density in the formula refers to fresh water density, and if the applicable object is seawater, the value is 1.025 × 103kg per square meter; the different boundary flow rates in the formula refer to the flow rates of the water in the horizon layer at which the suction ports of the second extraction pipe 40 and the first extraction pipe 30 are located.
Specifically, the second slurry pump 31 is connected to the separation tank 10 through the second connection pipe 32, and the first slurry pump 41 is connected to the separation tank 10 through the first connection pipe 42. The second slurry pump 31 and the first slurry pump 41 provide suction force to suck the underwater waste, and the mixture of the sucked waste and the water body is respectively sent into the separation tank 10 through the second connecting pipe 32 and the first connecting pipe 42 to perform a solid-liquid separation process.
Specifically, an inclined sieve plate 14 is arranged in the separation box 10, two side faces of the sieve plate 14 are connected with the wall of the separation box 10, the upper end of the inclined end of the sieve plate 14 is connected with the wall of the separation box 10, the bottom end of the inclined end of the sieve plate 14 is connected with the bottom of the separation box 10 through a partition plate 15, and the sieve plate 14 is used for solid-liquid separation of waste sent into the separation box 10 by the first slurry pump 41 and the second slurry pump 31. The waste and water mixture is sent into the separation box 10 and then falls on the surface of the sieve plate 14, the sieve plate 14 is utilized to carry out solid-liquid separation on the mixture, the separated sewage falls into the bottom space of the sieve plate 14, the separated solid slides along the sieve plate 14 to the space on one side of the sieve plate 14, the sieve plate 14 and the separation plate 15 are connected, the separation of the separated sewage and the separated solid storage space is realized, and the secondary mixing of the separated sewage and the separated solid is avoided.
Specifically, the sewage conduit 200 is communicated with the bottom of the separation box 10 at the lower part of the sieve plate 14, and a guide block 16 is arranged near the communication port for guiding the water body to the communication port. The sewage conduit 200 collects sewage in the space below the screen plate 14 directly and sends the sewage into the land-based water purification assembly 300 along the sewage conduit 200 for further water treatment, and in order to improve the efficiency of sewage entering the sewage conduit 200 and avoid excessive accumulation of sewage in the separation tank 10, the guide blocks 16 are arranged to guide the sewage to enter the sewage conduit 200 along the surfaces of the guide blocks 16.
Specifically, the sieve plate 14 is formed by interconnecting flexible plate bodies 14, the sieve holes 141 of which are uniformly distributed on the surface, and the joints of the flexible plate bodies 14 are in a Z shape. The flexible plate 14 is selected to realize that the flexible plate 14 generates arc deformation according to the weight when the waste falls on the surface of the sieve plate 14, so that the waste moves on the surface of the sieve plate 14 which is deformed to form an arc surface, the waste with overhigh water content can stay at the bottom of the arc surface of the sieve plate 14 for a long time by utilizing the gravity center principle until water in the waste is continuously filtered out, the waste with reduced water content can slide downwards along the sieve plate 14 with recovered shape after the sieve plate 14 deforms and rebounds, the waste falls on one side of the partition plate 15 to separate a solid-liquid collecting area, meanwhile, accumulation among the separated solids is beneficial to gathering internal energy of the extracted solids to be beneficial to subsequent fermentation treatment work of the separated solids, wherein the arc surface area which generates arc deformation downwards when the sieve plate 14 is weighted is enlarged by arranging the connection part among the flexible plates 14 to be in a Z-shaped structure, the retention time of the waste on the surface of the sieve plate 14 is prolonged, and the solid-liquid separation efficiency is improved.
Specifically, rollers 13 are arranged above the sieve plate 14, the rollers 13 are driven by a motor arranged on one side of the separation box 10, a sewage discharge outlet 11 for discharging solid separation matters is arranged on one side of the separation box 10, and an ultraviolet lamp 12 is further arranged in the separation box 10. For avoiding still having the heavy weight after the discarded object drainage and stopping for a long time and causing accumulational condition to appear on 14 surfaces of sieve, play the pushing action to the discarded object through setting up gyro wheel 13, prevent to appear the accumulational condition of discarded object on the sieve 14, and set up drain 11 in separator box 10 one side and be used for getting rid of the lower discarded object of moisture content that the inside solid-liquid separation of separator box 10 obtained and carry out follow-up fermentation or other forms and handle, and carry out certain bactericidal treatment through set up ultraviolet lamp 12 in separator box 10 in to separator box 10, reduce the bacterial quantity of handling sewage.
Specifically, land-based water purification subassembly 300 includes the first water pump 50 of being connected with sewage pipeline 200, first water pump 50 is connected with water strainer 60, water strainer 60 passes through the body and is connected with setting tank 70, setting tank 70 discharges the water by drainage pipe 71, land-based water purification subassembly 300 that will be used for water treatment sets up on the bottom surface, so that obtain great processing space, and avoid locating land-based water purification subassembly 300 and breed the surface of water and cause breeding surface of water illumination area's reduction, extract work in sewage pipeline 200 through setting up first water pump 50, guarantee that sewage normally gets into and carries out water purification work in water strainer 60 and the setting tank 70.
Specifically, a pebble layer 61, a zeolite layer 66, a sand layer 62, a cotton layer 65, an activated carbon layer 63 and a filtering membrane 64 are sequentially laid in the water filtering tank 60 from a water inlet end to a water outlet end, sewage is subjected to step-by-step filtering treatment by using filtering materials, the solid particles and a certain amount of pollution elements are gradually intercepted by arranging the filtering materials in sequence, the filtering materials arranged in the surface water filtering tank 60 can achieve the filtering effect on the solid particles with the particle size of more than 0.01mm in the sewage in practice, and the filtering effect of the sewage can be further reduced according to the aperture of the filtering holes of the selected filtering membrane 64,
the selected pebble layer 61 has the grain diameter of 2.5-3cm and the thickness of 8-8.8 cm; the thickness of the zeolite layer 66 is 5-7cm, the grain diameter of the sand layer 62 is 1.5-1.9cm, and the thickness is 10-20 cm; the thickness of the cotton layer 65 is 0.6-1.2 cm; the thickness of the activated carbon layer is 5-8 cm; the filtering membrane 64 has a filtering pore size of 0.01mm, and may have a smaller pore size if necessary.
Specifically, the baffles 72 are arranged in the settling tank 70 at intervals in a staggered manner, so that the water body flows in a winding and spiral manner in the settling tank 70, one side of the settling tank 70 is connected with an ozone generator 75 through an air pipe 74, and the air outlet direction of the air pipe 74 is opposite to the flow direction of the water flow. The gas outlet of trachea 74 is located settling tank 70 upper portion space, set up the guide plate through settling tank 70 and make the water wriggle in settling tank 70 and flow, the dwell time of extension water in settling tank 70, and reduce the bacterial quantity of the water that the processing reachs through carrying out the germicidal treatment in the input water with ozone, and the input of ozone can form certain choked flow effect to the water velocity of flow in settling tank 70, reduce the velocity of flow of water in settling tank 70, further the dwell time of extension water in settling tank 70 improves the settlement effect of the superfine particulate matter in the water.
Example 2:
an aquaculture wastewater treatment method comprises the following steps:
adopting a second extraction pipe 40 and a first extraction pipe 30 with different lengths to respectively extract the wastes of different height layers of the culture water bottom layer and obtain the wastes of different water layers;
the obtained waste and water mixture are sent into a separation box 10 through a first slurry pump 41 and a second slurry pump 31 to carry out solid-liquid separation on the extracted waste, the separated solid is intercepted by a sieve plate 14, the separated water is subjected to water filtration treatment, and the separated sewage is sent to a land-based water purification assembly 300 on the bottom surface by a sewage pipeline 200 when the water falls to the space at the bottom of the sieve plate 14 for water filtration treatment;
sewage enters the water filtering tank 60 to filter water after entering the land-based water purifying assembly 300, the sewage is filtered step by step through the filter material in the water filtering tank 60 and then is sent into the settling tank 70 to be settled, ozone is input into the water body in the settling process to sterilize the water body, the input direction of the ozone is opposite to the flow direction of the water body in the settling process, and the retention time and the flow speed of the water body in the settling tank 70 are delayed.
The water body after the water purification is finished is discharged through a water discharge pipe 71.
Example 3:
water tank test:
an indoor water tank was used to lay sediment on the bottom of water, the sediment in the water tank was extracted using the apparatus of example 1 of the present invention as experimental group 1, the sediment resuspension process was observed, and the sediment extraction work was performed again after the first extraction pipe 30 of example 1 was removed to observe the sediment suspension process as experimental group 2.
The length of the water tank used in the test is 10 meters, the width is 0.5 meter, the height is 1 meter, the length of the sediment at the bottom of the water tank is 4 meters, the width is 0.5 meter, and the height is 0.35 meter. The particle diameter of the sediment is about 0.036mm, wherein the particle diameter of the sediment smaller than 0.02mm is about 25%, and fresh water is slowly injected after the sediment in the water tank is placed and needs to be placed for 5 days.
The interval between the second extraction pipes 40 of the experimental group 1 and the experimental group 2 and the sediment is controlled to be 5 cm, the flow rate of the slurry pump is respectively controlled to observe the sediment resuspension variation amount in the sediment extraction process, the dynamic variation process curve of the sediment resuspension amount of the experimental group 1 is shown in fig. 8, and the dynamic variation process curve of the sediment resuspension amount of the experimental group 2 is shown in fig. 9.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (5)
1. An aquaculture wastewater treatment plant comprising:
a waste collection component which is arranged above the culture water body,
a land-based water purification component arranged on the ground, the land-based water purification component is connected with the waste collection component through a sewage pipeline,
the waste collection assembly comprises a floating body, a separation box is arranged on the floating body, a first slurry pump and a second slurry pump are respectively arranged in the floating body, the first slurry pump is connected with a second extraction pipe to extract waste at the bottom of a culture water, the second slurry pump is connected with a first extraction pipe, the length of the first extraction pipe is shorter than that of the second extraction pipe, the first slurry pump and the second slurry pump are respectively connected with the separation box, the separation box is used for carrying out solid-liquid separation on the extracted waste, and sewage is discharged to the land-based water purification assembly through a sewage pipeline connected to the bottom of the separation box;
the second slurry pump is connected with the separation box through a second connecting pipe, and the first slurry pump is connected with the separation box through a first connecting pipe;
the separation box is internally provided with an inclined sieve plate, two side surfaces of the sieve plate are connected with the wall of the separation box, the upper end of the inclined end of the sieve plate is connected with the wall of the separation box, the bottom end of the inclined end of the sieve plate is connected with the bottom of the separation box through a partition plate, and the sieve plate is used for solid-liquid separation of waste which is pumped into the separation box by a first slurry pump and a second slurry pump;
the sewage pipeline is communicated with the bottom of the separation box at the lower part of the sieve plate, and a guide block is arranged near the communication port and used for guiding the water body to the communication port;
the sieve plate is formed by mutually connecting flexible plate bodies with sieve pores uniformly distributed on the surface, and the joints of the flexible plate bodies are Z-shaped;
the screen plate top is equipped with the gyro wheel, the gyro wheel is by the motor drive who sets up in separator box one side, separator box one side is equipped with the drain that is used for discharging the solid separation thing, still be equipped with the ultraviolet lamp in the separator box.
2. The aquaculture wastewater treatment apparatus of claim 1, wherein: the land-based water purification assembly comprises a first water pump connected with a sewage pipeline, the first water pump is connected with a water filter tank, the water filter tank is connected with a settling tank through a pipe body, and the settling tank discharges a water body through a drainage pipeline.
3. The aquaculture wastewater treatment apparatus of claim 2, wherein: a pebble layer, a zeolite layer, a sand layer, a cotton layer, an activated carbon layer and a filtering membrane are sequentially paved in the water filtering tank from a water inlet end to a water outlet end.
4. The aquaculture wastewater treatment apparatus of claim 2, wherein: the utility model discloses a sedimentation tank, including sedimentation tank, trachea, leading-out air pipe, the crisscross guide plate of having arranged at interval in the sedimentation tank makes the water be winding and circling the flow in the sedimentation tank, sedimentation tank one side is connected with ozone generator through the trachea, tracheal direction of giving vent to anger is opposite with rivers flow direction.
5. An aquaculture wastewater treatment method using the aquaculture wastewater treatment apparatus according to any one of claims 1 to 4,
respectively extracting the underwater wastes of the cultivation by adopting pipe bodies with different lengths to obtain the wastes of different water layers;
performing solid-liquid separation on the extracted waste, intercepting the separated solid, performing water filtration on the separated water body, performing precipitation treatment on the water body subjected to water filtration, and introducing ozone for sterilization in the precipitation process;
the ozone input direction is opposite to the water flowing direction in the sedimentation process.
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