CN203144243U - System for treating breeding wastewater through combination of biological carrier and ecological restoration technology - Google Patents
System for treating breeding wastewater through combination of biological carrier and ecological restoration technology Download PDFInfo
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- CN203144243U CN203144243U CN 201320123893 CN201320123893U CN203144243U CN 203144243 U CN203144243 U CN 203144243U CN 201320123893 CN201320123893 CN 201320123893 CN 201320123893 U CN201320123893 U CN 201320123893U CN 203144243 U CN203144243 U CN 203144243U
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Abstract
The utility model relates to a system for treating breeding wastewater through the combination of a biological carrier and an ecological restoration technology. The system comprises a sedimentation tank, a diluting aeration tank, a percolating filter tank, an outdoor plant tank, a greenhouse plant tank and a fishpond which are sequentially connected through a pipeline. Compared with the prior art, the system has the advantages that a high-efficiency low-energy-consumption biological treatment technology, a purification technology and a purification device are supplied for livestock and poultry breeding wastewater in villages, so that the effluent of seriously eutrophic biogas slurry in livestock farms, which is treated by the biological carrier and a multistage ecological type treatment purification system, reaches the emission standard of the livestock and poultry breeding wastewater. The system is simple in running, low in unit construction cost, operating cost and management expenses, has a good wastewater treatment effect and provides an important guarantee for realization of ecological agriculture and production of nuisanceless agricultural products.
Description
Technical field
The utility model relates to a kind of system that administers aquaculture wastewater, especially relates to a kind of bio-carrier being combined the system that administers aquaculture wastewater with ecological reestablishment, belongs to field of environment engineering technology.
Background technology
Raising along with Chinese society rapid economy development and the per capita average incomes of urban and rural areas, wide variation have taken place in people's food consumption pattern, grain consumption quantity reduces per capita, animal products consumption quantity rises year by year, the consumption of meat, birds, beasts and eggs and milk is with nearly 10% speed increment every year on average, and the demand of animal products is increasing.In the livestock and poultry industry development; breed science practical technique utility ratio is not high; the tradition aquaculture model still exists; shortage to environmental protection consciousness; the movement that produces in the breeding process is handled and be can not get appropriate processing and utilization rationally; add the raising of large-scale degree in recent years; cause a large amount of fecal sewages concentrated relatively; surpassed the limit that local ecotope can carry; feces of livestock and poultry pollutes the main source that becomes the rural area pollution of area source; the influence that farm animal excrement causes environment and people become increasingly conspicuous to the contradiction of meat product consumption, have restricted whole herding industry development.
The livestock and poultry feces treatment process is more at present, and existing have following treatment processs to the livestock and poultry cultivation movement:
(1) solid-liquid separation.Most of organism in the excrement dirt be can remove by solid-liquid separation, wastewater treatment load and cost reduced.But also will further handling just, the liquid of separating and solid can reach relative national standards or regulation.The main method that adopts is that mechanical type is separated into master-screening and extruding at present.Also have employing to add the precipitation that flocculation agent is accelerated suspended substance in the waste water in waste water, reduce the suspended substance in the waste water, but add the cost that flocculation agent can increase wastewater treatment, the subsequent disposal that also can influence waste water that has increases intractability.
(2) efficient anaerobic is handled.It is the main method that feces of farm is handled that efficient anaerobic is handled.It mainly changes into biogas by anaerobic digestion with the organism in the animal excrement, produces clean energy, can obviously reduce organism and COD in the waste water.That application is more at present is methane-generating pit, AF (anaerobic filter) and UASB (up-flow anaerobic sludge blanket).
(3) aerobe is handled.Aerobe is handled general method for subsequent processing as Anaerobic Digestion.By aerobic treatment, can remove nitrogen, phosphorus, organism and other material in the water.The aerobic treatment method has varied, as biological filter, blodisc, biological fluidized bed, SBR (sequence intermittent activated sludge process) etc.At livestock and poultry farm wastewater characteristics and national regulation to plant's pollutant emission, SBR has to remove nitrogen, phosphorus and organic reactor simultaneously, and this is that other aerobic treatment method is incomparable.
The characteristic of aquaculture wastewater is relative newer research field with handling, compare with sanitary sewage with industrial sewage, the sewage that agricultural breeding produces has its unique characteristics, at first, adopt the treatment process investment of traditional industry sewage or sanitary sewage excessive, aquaculture can't be born, and the processing of these methods and not exclusively suitable aquaculture wastewater, can not guarantee the removal efficient of materials such as high concentration N, phosphorus; Secondly, mainly be nutritive ingredient in the aquaculture water, can directly or be made for thing through certain processing and absorb; Moreover the processing equipment of aquaculture wastewater also has the singularity of himself, and the volume of equipping, work reliability and economy, technical process all have the particular requirement that is different from other industry.Therefore, the ecotope engineering of the suitable China of development aquaculture wastewater processing just seems quite urgent.
Hover (bed) method is that the eutrophication that develops rapidly is is in recent years prevented and treated method, this method is utilized floating islands such as plastic foam, directly absorb in the water nutritive salt such as nitrogen phosphorus water surface planting humidogene and waterplant, the key factor that causes the wawter bloom generation with removal, also has simultaneously comparatively ideal landscape effect, " a kind of ecology absorption view floating bed device and method for treating landscape water body " disclosed as Chinese utility model patent CN1644533, and paper " flower flying saucer ecoscape chinampa technology and greening waterborne " (farming still. flower gardening, 2006C1): 46-47) introduced a kind of novel buoyant means " flower flying saucer ", can be implemented in the lake, reservoir, the pond, the various Lu Sheng flowers of plantation and economic plants comprise Cyclamen persicum in the pond, Sunflower Receptacle, chrysanthemum, water breaks, chrysanthemum warbler tail, Tang Gepu, Chinese rose etc., form so-called ecological floating island, the shortcoming of this method is that plant absorbing nitrogen phosphorus efficient is lower, required chinampa area is bigger, often account for more than 25% of the view water surface, also be difficult to the sudden algal bloom of reply simultaneously.Directly medication is namely at the blue-green algae raised growth, and the landscape water body turbidity adds medicament except algae and deposit fouling thing when significantly rising.This method can reach get instant result except the algae effect, but there is significant disadvantage the most, though be that the bottom is gone in the algae coagulative precipitation, but survival still, and general landscape water body is all more shallow, and water-bed illuminance also is enough to support the algal grown breeding, therefore can recover active again after after a while, again even more serious wawter bloom phenomenon appears in come-up; The phenomenon of liberating nitrogen, phosphorus in the water also can appear again after long-time in Chen Dian pollutent and algae in addition.The shading method also is the practical technique that is subjected to extensive concern recently, its principle is for utilizing the physics light screening material to cover the water body 1/3 above water surface, suppress the blue-green algae growth and breeding, its shortcoming is not have removal effect for nutritive salt such as nitrogen phosphorus in the water, required shading area is excessive simultaneously, has a strong impact on landscape effect.
Chinese patent CN101333041 discloses " ecological floating island and method of construction thereof ", patent disclosure a kind of ecological floating island and method of construction thereof, comprise unit, chinampa housing, housing lid, buoyancy aid filler, plantation cup and plantation pipe, buoyancy aid filler, the microorganism that grows on the buoyancy aid filler, plant and root system of plant three act synergistically down, form an optimum eubiosis, polluted-water is handled continuously, the ecological floating island of this utility model can stackedly be assembled in addition, and pollution treatment efficient is improved greatly.The shortcoming of this utility model is: plant absorbing nitrogen phosphorus efficient is lower, function singleness, only being planted in the microorganism that plant on the ecological floating island and root system of plant adhere to can absorb and conversion pollutant, general landscape water body is more shallow, there is pollutent and the algae of precipitation at the bottom, and water-bed illuminance also is enough to support the algal grown breeding.The phenomenon that also can occur again liberating nitrogen phosphorus in the water after the pollutent of precipitation and algae are long-time, and utilize waterplant to absorb nutritive substance, and the nutritive substance in leaking water by the results vegetation zone is the ecological restoring method of a kind of low consumption, efficient and environmental safety.
The utility model content
The purpose of this utility model is exactly to provide a kind of to move simple, unit construction cost, working cost and overhead charges are cheap, treatment effect is good a kind of bio-carrier is combined the system of improvement aquaculture wastewater with ecological reestablishment in order to overcome the defective that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, this system comprises settling tank, dilution aeration tank, diffusion cell, open air vegetation pond, hothouse plants pond and the fishpond that links to each other successively by pipeline.
Described dilution is provided with bio-carrier in the aeration tank, described bio-carrier is ecological cloth, the top of this ecology cloth is provided with sleeve, rope passes sleeve ecological cloth is suspended in the dilution aeration tank, the top of described ecological cloth is dense layer, the bottom is tectorium, and wherein, the bottom of ecological cloth cuts into strip.
Described dilution is provided with aeration tube in the aeration tank, this aeration tube be located at the gas blower of dilution outside the aeration tank and be connected.
Described diffusion cell is divided into the 1st grade～the 6th grade by the wall in the pond, the 1st grade of 1 meter thick filtering layer for being constituted by rubble or the slag of particle diameter 20～40mm, the 2nd～6 grade is the filtering layer that comprises bottom and upper strata, wherein bottom 20cm is thick, be that rubble or the slag of 20～40mm constitutes by particle diameter, upper strata 30cm is thick, is that rubble or the slag of 5～15mm constitutes by particle diameter; Plantation resistant water plant on the filtering layer of described diffusion cell.
The 1st grade of the diffusion cell with the 2nd grade between be connected by the perforation header, 3rd level with the 4th grade between by the perforation header be connected, the 5th grade with the 6th grade between be connected by the perforation header, the wall between the wall between the 2nd grade and the 3rd level and the 4th grade and the 5th grade is short other walls in the diffusion cell all.
Described perforation header evenly is laid at the bottom of the pond of diffusion cell.
The straight nogging of the Bian Biwei of described diffusion cell mixes structure, is concrete structure at the bottom of the pond of diffusion cell, all lays the antiseepage plastics film at the bottom of the Bian Bi of diffusion cell and the pond, and the bottom of the 2nd grade, the 4th grade and the 6th grade is provided with water shoot.
Described open air vegetation is provided with artificial ecological floating island in the pond, planting aquatic plants on the artificial ecological floating island.
Put silver carp and variegated carp in the described fishpond in a suitable place to breed, the floating duckweed of the water surface in fishpond is put pasture and water in a suitable place to breed in the water of fishpond.
Use system of the present utility model to carry out the method that aquaculture wastewater handles to be: aquaculture wastewater is met the purifying water body of " aquaculture wastewater emission standard " successively after the purification through settling tank, dilution aeration tank, diffusion cell, open air vegetation pond, hothouse plants pond and fishpond, specifically may further comprise the steps:
(1) aquaculture wastewater enters settling tank, and the suspended particle in the aquaculture wastewater is deposited in the settling tank, and the hydraulic detention time of aquaculture wastewater in settling tank is: summer 24～48h, winter 96～120h;
(2) aquaculture wastewater that flows out from settling tank enters the dilution aeration tank, aquaculture wastewater is diluted by clear water in the dilution aeration tank and is handled by aeration, summer, the weight ratio of aquaculture wastewater and clear water was 1: 0.5, winter, the weight ratio of aquaculture wastewater and clear water was 1: 2, through the hydraulic detention time of the aquaculture wastewater after the dilution in the dilution aeration tank was:
(3) aquaculture wastewater that flows out from the dilution aeration tank enters the diffusion cell, and the hydraulic detention time of aquaculture wastewater in the diffusion cell is: summer 24～27h, winter 40～44h;
(4) aquaculture wastewater that flows out from the diffusion cell enters the open air vegetation pond, and the aquaculture wastewater hydraulic detention time in the plant pond in the open is: summer 24～48h, winter 48～72h;
(5) aquaculture wastewater that flows out from the open air vegetation pond enters the hothouse plants pond, and the hydraulic detention time of aquaculture wastewater in the hothouse plants pond is: summer 48～72h, 96～120h;
(6) aquaculture wastewater that flows out from the hothouse plants pond enters the fishpond, and the residence time of aquaculture wastewater in the fishpond is: summer 5～10h, winter 20～25h;
(7) flow out the purifying water body that meets " aquaculture wastewater emission standard " from the fishpond.
The utility model combines bio-carrier and ecological reestablishment, and livestock and poultry cultivation movement or aquaculture wastewater are implemented innoxious, recycling treatment and recycle.
Owing to still contain a large amount of suspended particles in the aquaculture wastewater, therefore need carry out precipitation process to aquaculture wastewater, in order to avoid too much particulate matter enters phytoremediation system jams pipeline, can alleviate the post-processed load simultaneously.The hydraulic detention time of aquaculture wastewater in settling tank is preferably: summer 31h, winter 104h.
Because the discharging of aquaculture wastewater is to concentrate on a certain period, for guaranteeing the steady running of phytoremediation system, must make aquaculture wastewater enter the phytoremediation system equably by adjusting, CODcr, BODS in the aquaculture wastewater, TP isoconcentration are very high, thereby need dilute and be adjusted to proper concn to guarantee the needs of plant-growth; Therefore, after settling tank, set up the dilution aeration tank.Aquaculture wastewater after dilution is preferably at the hydraulic detention time of dilution in the aeration tank: summer 8h, winter 13h.
Described dilution is being hung ecological cloth by rope in the aeration tank, the rope two ends are fixed in the stake or hook of bank or pool wall, thereby ecological cloth suspension is installed in water body or treating pond surface (but also layering is installed), if span is bigger, on rope, ball float can be installed, keep buoyancy.The tectorium of ecological cloth is conducive to algal grown, and dense layer is conducive to fungus grown.The water sealing can also be reserved in the bottom of ecological cloth, was conducive to the control of current.
Described ecological cloth is formed by the multifunctional fibrous material braiding.By unique knitting skill and surface treatment, make it have long-pending, the meticulous three-dimensional surface structure of huge biological surface in contact and suitable surface adsorption electric charge, can develop that biomass is huge, species are abundant, active high microflora, and the metabolism efficient degradation pollutants in waste water by microorganism.Bio-carrier essence is a kind of carrier of immobilized microorganism technique.Immobilized microorganism technique namely is that microorganism is fixed on the biotechnology that makes its highly dense on the carrier and keep its bioactive functions.At present, the application in immobilized microorganism technique water environment treatment field, its principle is removed pollutants in sewage for assemble and breed the microflora of certain biomass at carrier by the metabolism of microorganism.
The ecological cloth that the utility model is selected for use is handled aquaculture wastewater or other water body, can provide huge and suitable attaching surface for microflora, increasing biomass, enriching aspect such as species diversity and have more advantage than common bio-carrier, ability and efficient by this advantage strengthening system degradable organic pollutant simultaneously, thus reach the purpose of efficiently purifying waste water.
By sewage aeration is handled, to alleviate the processing pressure of follow-up plant purification system.
The antiseepage plastics film is selected HDPE (high density polyethylene(HDPE)) anti seepage membrane or common plastic film for use.Aquaculture wastewater enters the 1st grade from the entrance of diffusion cell, enter the 2nd grade by the perforation header between the 1st grade and the 2nd grade, flow through from the top of the wall between the 2nd grade and the 3rd level again, enter 3rd level, flow into the 4th grade by the perforation header between 3rd level and the 4th grade again, the wall top between the 4th grade and the 5th grade is flow through again, enter the 5th grade, at last, flow into the 6th grade by the perforation header between the 5th grade and the 6th grade, flow out from the outlet of diffusion cell.
Sewage is purified through the effect of matrix in resistant water plant and the filtering layer in the diffusion cell in a certain direction in the flow process.The system that it is mainly formed by high-performance bio carrier matrix, microorganism, plant gives full play to all kinds of biologies and hydrobiological effect, and sewage is finished a series of scavenging process, reaches the purpose of pollutant removal.The nutritive substance of resistant water plant in can the absorbing and filtering layer, this makes sewage be purified to a certain extent, and can give filtering layer oxygenation, the rhizosphere microflora of resistant water plant and the enzyme mineralising organism of can also degrading.Both utilize the competitive influence between the biology, brought into play its biochemical antgonistic action again; Both utilize resistant water plant transporting oxygen to enter in water and the settling and played a role, taken full advantage of the different purification function of each level of root system miniature organism monoid again.
The open air vegetation pond is the simplest treating pond of structure, multi-functional composite artificial ecological floating island carrier is installed, the environmental protection of artificial ecological floating island carrier, make simple, economical and practical, can planting aquatic plants on the artificial ecological floating island carrier, and utilize waterplant to absorb nutritive substance, and be a kind of low consumption by the nutritive substance of results vegetation zone in leaking water, the ecological restoring method of efficient and environmental safety, can effectively improve the water quality of eutrophication water, improve landscape value, for environment, Sustainable development economic and society has great importance, and it is continual that aquaculture water is obtained, can be applicable to the water conditioning in environmental protection and view waters, greenery patches.Utilize artificial ecological floating island that polluted water is purified, remove macrobead suspended matter in the water, remove nitrogen by the waterplant on the artificial ecological floating island and adsorbing base effect, phosphorus plays the effect of shading simultaneously.The utility model utilizes the plot as the open air vegetation pond.Soil structures is adopted in the plant pond.For not influencing the water quality in adjacent river, the membrane seepage prevention measure is taked on open air vegetation pool side slope.As preferably, the aquaculture wastewater hydraulic detention time in the plant pond in the open is: summer 40h, winter 68h.
The area in hothouse plants pond is relevant with flooding velocity, eutrophication degree, way of supplying water, plant treatment ability and root growth etc.The flowers of the different levels of planting in the hothouse plants pond, nursery stock or vegetables.The cultivation bed in described hothouse plants pond adopts soil structures substantially, and as preferably, the hydraulic detention time of aquaculture wastewater in the hothouse plants pond is: summer 68h, winter 113h.
Put silver carp and variegated carp in the fishpond in a suitable place to breed, the floating duckweed of the water surface in fishpond is put pasture and water in a suitable place to breed in the water of fishpond, and as preferably, the residence time of aquaculture wastewater in the fishpond is: summer 7h, winter 23h.
Like this aquaculture wastewater handle with the cycle of a circulation do not continue via the high-performance bio carrier with ecological reestablishment improvement and must purify, the water body discharging meets the emission standard in " aquaculture wastewater emission standard " after the processing before aquaculture wastewater is all through one, wherein, in the aquaculture wastewater after treatment, CODcr is 400mg/l, NH3-H is 80mg/l, SS is 200mg/l, aquaculture wastewater does not after treatment cause secondary pollution to farm crop and near resident's orthobiosis water, does not influence fish, the shrimp aquaculture of downstream river course.When water quality obtained in various degree improvement, waterplant was to the absorption of nutritive substance and transform and also realized sewage recycling and innoxious use.
Compared with prior art, the utlity model has following advantage and beneficial effect:
The first, the utility model adopts ecological cloth as bio-carrier in the dilution aeration tank, has following function:
(1) have function vector: the ecological cloth at Sewage treatment systems, adopted unique knitting skill.Than plankton, the set microorganism will exceed much the degradation efficiency of nutrition (organic pollutant), and in this, the bacterial flora that plays nitrification is exactly a good example.If form stable symbiosis group, the efficient that the bacterium that plays nitrification helps through nitrification just can increase several times to tens times, just follows this rule as Nitromonas etc.Preferable condition has been created in the formation that ecological cloth is this symbiotic relationship.
(2) has certain biofiltration effect.
(3) have synchronous dephosphorization denitrogenation function: ecological cloth is two different knitted parts up and down, the top of ecological cloth is dense layer, the bottom is the characteristics of tectorium, from designing the effective control that has realized oxygen transfer rate, thereby has formed comparatively desirable " aerobic-facultative-anaerobism " microenvironment.This design has guaranteed that the nitrification and denitrification effect might carry out simultaneously, makes ecological cloth have denitrogenation dephosphorizing function preferably.
The second, the utility model is after disposing of sewage through the bio-carrier in the dilution aeration tank, successively through diffusion cell, open air vegetation pond, hothouse plants pond and fishpond, carry out ecological reestablishment, the resistant water plant of different levels or the collocation of waterplant can beautify plant environment simultaneously in decontamination, and putting in a suitable place to breed of the floating cultivation of vegetables, herbage and fish can also be created certain economic benefits for the pig farm.
Three, the utility model adopts the pleuston purification system to come sewage or the natural pond liquid for the treatment of scale plant.Reach on the basis of state sewage emission standard guarantee handling back water quality, gather materials on the spot as far as possible, the utility model be meet local, economical and practical, purify scheme cheaply.
Four, the utility model provides the biologic treating technique of high-efficiency low energy consumption for rural area livestock and poultry cultivation sewage, and purification process and equipment are simple.Make the water outlet of plant's natural pond liquid (in line sewage is after methane-generating pit is handled) behind bio-carrier and multi-stage ecological type treatment and purification system of serious rice-nutrient reach livestock and poultry cultivation sewage drainage standard.
Five, the utility model operation is simple, and unit construction cost, working cost and overhead charges are cheap, and good sewage processing effect is for the realization of the ecological agriculture and the production of non-polluted farm product provide important assurance.
Description of drawings
Fig. 1 is the structural representation of aquaculture wastewater purification system of the present utility model;
Fig. 2 is the structural representation of dilution aeration tank;
Fig. 3 is the structural representation of ecological cloth;
Fig. 4 is the structural representation of diffusion cell;
Fig. 5 is the structural representation in open air vegetation pond.
Among the figure, 1 is settling tank, and 2 are the dilution aeration tank, 3 is the diffusion cell, and 4 is the open air vegetation pond, and 5 is the hothouse plants pond, 6 is the fishpond, and 7 is pipeline, and 8 is resistant water plant, 9 is filtering layer, and 10 are the perforation header, and 11 is aeration tube, 12 is gas blower, and 13 is ecological cloth, and 14 are the antiseepage plastics film, 15 is artificial ecological floating island, and 16 is waterplant.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment 1
A kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, as shown in Figure 1, this system comprises settling tank 1, dilution aeration tank 2, diffusion cell 3, open air vegetation pond 4, hothouse plants pond 5 and the fishpond 6 that links to each other successively by pipeline 7.
The structure of dilution aeration tank 2 as shown in Figure 2, dilution is provided with bio-carrier and aeration tube 11 in the aeration tank 2, this aeration tube 11 gas blower 12 outer with being located at dilution aeration tank 2 is connected, by to the sewage aeration processing, to alleviate the processing pressure of follow-up plant purification system.Bio-carrier is ecological cloth 13, the structure of ecological cloth 13 as shown in Figure 3, the top of this ecology cloth 13 is provided with sleeve, rope passes sleeve ecological cloth 13 is suspended in the dilution aeration tank 2, the rope two ends are fixed in the stake or hook of bank or pool wall, thereby ecological cloth 13 suspensions are installed in water body or treating pond surface (but also layering is installed), if span is bigger, on rope, ball float can be installed, keep buoyancy.The top of ecological cloth 13 is dense layer, and the bottom is tectorium, and the bottom of ecological cloth 13 cuts into strip.Wherein tectorium is conducive to algal grown, and dense layer is conducive to fungus grown.The water sealing can also be reserved in the bottom of ecological cloth 13, was conducive to the control of current.
The structure of diffusion cell 3 as shown in Figure 4, diffusion cell 3 is divided into the 1st grade～the 6th grade by the wall in the pond, the 1st grade of 1 meter thick filtering layer 9 for being constituted by rubble or the slag of particle diameter 20～40mm, the 2nd～6 grade is the filtering layer 9 that comprises bottom and upper strata, wherein bottom 20cm is thick, be that rubble or the slag of 20～40mm constitutes by particle diameter, upper strata 30cm is thick, is that rubble or the slag of 5～15mm constitutes by particle diameter; Plantation resistant water plant 8 on the filtering layer 9 of diffusion cell 3.The 1st grade of diffusion cell 3 with the 2nd grade between be connected by perforation header 10,3rd level with the 4th grade between by the perforation header 10 be connected, the 5th grade with the 6th grade between be connected by perforation header 10, the wall between the wall between the 2nd grade and the 3rd level and the 4th grade and the 5th grade is short other walls in diffusion cell 3 all.The caliber of perforation header 10 is 10cm, and the aperture of perforation header 10 is 100mm, and perforation header 10 is the 10cm spacing and evenly lays.The straight nogging of the Bian Biwei of diffusion cell 3 mixes structure, is concrete structure at the bottom of the pond of diffusion cell 3, and the bottom of all laying 14, the 2 grades of antiseepage plastics films, the 4th grade and the 6th grade at the bottom of the Bian Bi of diffusion cell 3 and the pond is provided with water shoot.Diffusion cell 3 structures are implemented to dig dark 0.8 meter, 0.4 meter of fill.Antiseepage plastics film 14 is selected 0.25～0.35 HDPE (high density polyethylene(HDPE)) anti seepage membrane or common plastic film for use.
The structure in open air vegetation pond 4 is provided with artificial ecological floating island 15 as shown in Figure 5 in the open air vegetation pond 4, planting aquatic plants 16 on the artificial ecological floating island 15.The utility model utilizes the plot as open air vegetation pond 4.Soil structures is adopted in open air vegetation pond 4, and slope coefficient 1.5 digs dark 0.8 meter, 0.4 meter of fill, and 0.8 meter of the depth of water, for not influencing the water quality in adjacent river, open air vegetation pond 4 side slopes are taked the membrane seepage prevention measure.
The cultivation bed in hothouse plants pond 5 adopts soil structures substantially, digs dark 0.3 meter, 0.4 meter of fill, and the depth of water is 0.5 meter in the greenhouse, and the total area in hothouse plants pond 5 is 423m
2
Put silver carp and variegated carp in the fishpond 6 in a suitable place to breed, the floating duckweed of the water surface in fishpond 6 is put pasture and water in a suitable place to breed in 6 water of fishpond.
In the present embodiment, the volume of settling tank 1 is 45m
3The volume of dilution aeration tank 2 is 15m
3, the volume of diffusion cell 3 is 52m
3Open air vegetation pond cubic capacity 90m
3, the total area in hothouse plants pond 5 is 423m
2, the cubic capacity in fishpond 6 is 30m
3
Use system of the present utility model to carry out the method that aquaculture wastewater handles to be: aquaculture wastewater is met the purifying water body of " aquaculture wastewater emission standard " successively after the purification through settling tank 1, dilution aeration tank 2, diffusion cell 3, open air vegetation pond 4, hothouse plants pond 5 and fishpond 6, specifically may further comprise the steps:
(1) aquaculture wastewater enters settling tank 1, and the suspended particle in the aquaculture wastewater is deposited in the settling tank 1, and the hydraulic detention time of aquaculture wastewater in settling tank 1 is: summer 31h, winter 104h;
(2) aquaculture wastewater that flows out from settling tank 1 enters the dilution aeration tank 2, aquaculture wastewater is diluted by clear water in dilution aeration tank 2 and is handled by aeration, summer, the weight ratio of aquaculture wastewater and clear water was 1: 0.5, winter, the weight ratio of aquaculture wastewater and clear water was 1: 2, aquaculture wastewater after dilution at the hydraulic detention time of dilution in the aeration tank 2 is: summer 8h, winter 13h;
(3) aquaculture wastewater that flows out from dilution aeration tank 2 enters the diffusion cell 3, and the hydraulic detention time of aquaculture wastewater in diffusion cell 3 is: summer 25h, winter 42h;
(4) 3 aquaculture wastewaters that flow out enter the open air vegetation pond 4 from the diffusion cell, and the aquaculture wastewater hydraulic detention times in the plant pond 4 in the open is: summer 40h, winter 68h;
(5) 4 aquaculture wastewaters that flow out enter the hothouse plants pond 5 from the open air vegetation pond, and the hydraulic detention time of aquaculture wastewater in hothouse plants pond 5 is: summer 68h, 113h;
(6) 5 aquaculture wastewaters that flow out enter the fishpond 6 from the hothouse plants pond, and the residence time of aquaculture wastewater in fishpond 6 is: summer 7h, winter 23h;
(7) 6 flow out the purifying water body meet " aquaculture wastewater emission standard " from the fishpond.
Owing to still contain a large amount of suspended particles in the aquaculture wastewater, therefore need carry out precipitation process to aquaculture wastewater, in order to avoid too much particulate matter enters phytoremediation system jams pipeline 7, can alleviate the post-processed load simultaneously.
Because the discharging of aquaculture wastewater is to concentrate on a certain period, for guaranteeing the steady running of phytoremediation system, must make aquaculture wastewater enter the phytoremediation system equably by adjusting, CODcr, BODS in the aquaculture wastewater, TP isoconcentration are very high, thereby need dilute and be adjusted to proper concn to guarantee the needs of plant-growth; Therefore, after settling tank 1, set up dilution aeration tank 2.
3 entrance enters the 1st grade from the diffusion cell through the aquaculture wastewater aquaculture wastewater of dilution behind the aeration, enter the 2nd grade by the perforation header 10 between the 1st grade and the 2nd grade, flow through from the top of the wall between the 2nd grade and the 3rd level again, enter 3rd level, flow into the 4th grade by the perforation header 10 between 3rd level and the 4th grade again, wall between the 4th grade and the 5th grade top is flow through again, enter the 5th grade, at last, flow into the 6th grade by the perforation header 10 between the 5th grade and the 6th grade, 3 outlet is flowed out from the diffusion cell.
Sewage is purified through the effect of matrix in resistant water plant 8 and the filtering layer 9 in diffusion cell 3 in a certain direction in the flow process.The system that it is mainly formed by high-performance bio carrier matrix, microorganism, plant gives full play to all kinds of biologies and hydrobiological effect, and sewage is finished a series of scavenging process, reaches the purpose of pollutant removal.Resistant water plant 8 can the absorbing and filtering layer nutritive substance in 9, this makes sewage be purified to a certain extent, and can give filtering layer 9 oxygenation, the rhizosphere microflora of resistant water plant 8 and the enzyme mineralising organism of can also degrading.Both utilize the competitive influence between the biology, brought into play its biochemical antgonistic action again; Both utilize resistant water plant 8 transporting oxygen to enter in water and the settling and played a role, taken full advantage of the different purification function of each level of root system miniature organism monoid again.
Open air vegetation pond 4 is the simplest treating ponds of structure, multi-functional composite artificial ecological floating island 15 carriers are installed, artificial ecological floating island 15 carrier environmental protections, make simple, economical and practical, can planting aquatic plants 16 on artificial ecological floating island 15 carriers, and utilize waterplant 16 to absorb nutritive substance, and be a kind of low consumption by the nutritive substance of results vegetation zone in leaking water, the ecological restoring method of efficient and environmental safety, can effectively improve the water quality of eutrophication water, improve landscape value, for environment, Sustainable development economic and society has great importance, and it is continual that aquaculture water is obtained, can be applicable to the water conditioning in environmental protection and view waters, greenery patches.Utilize 15 pairs of polluted water of artificial ecological floating island to purify, remove macrobead suspended matter in the water, remove nitrogen by the waterplant 16 on the artificial ecological floating island 15 and adsorbing base effect, phosphorus plays the effect of shading simultaneously.
The area in hothouse plants pond 5 is relevant with flooding velocity, eutrophication degree, way of supplying water, plant treatment ability and root growth etc.The flowers of the different levels of planting in the hothouse plants pond 5, nursery stock or vegetables.
Like this aquaculture wastewater handle with the cycle of a circulation do not continue via the high-performance bio carrier with ecological reestablishment improvement and must purify, the water body discharging meets the emission standard in " aquaculture wastewater emission standard " after the processing before aquaculture wastewater is all through one, wherein, in the aquaculture wastewater after treatment, CODcr is 400mg/l, NH3-H is 80mg/l, SS is 200mg/l, aquaculture wastewater does not after treatment cause secondary pollution to farm crop and near resident's orthobiosis water, does not influence fish, the shrimp aquaculture of downstream river course.When water quality obtains in various degree improvement, the absorption of 16 pairs of nutritive substances of waterplant and transform and also realized sewage recycling and innoxious use.
Difference from Example 1 is that the volume of settling tank 1 is 40m
3The volume of dilution aeration tank 2 is 10m
3The hydraulic detention time of aquaculture wastewater in settling tank 1 is: summer 24h, winter 96h.Aquaculture wastewater after dilution at the hydraulic detention time of dilution in the aeration tank 2 is: summer 5h, winter 12h.The hydraulic detention time of aquaculture wastewater in diffusion cell 3 that flows out from dilution aeration tank 2 is: summer 24h, winter 41h.The aquaculture wastewater hydraulic detention times in the plant pond 4 in the open is: summer 24h, winter 48h.The hydraulic detention time of aquaculture wastewater in hothouse plants pond 5 is: summer 24, winter 48h.The residence time of aquaculture wastewater in fishpond 6 is: summer 5h, winter 20h.
Difference from Example 1 is that the volume of settling tank 1 is 50m
3The volume of dilution aeration tank 2 is 20m
3The hydraulic detention time of aquaculture wastewater in settling tank 1 is: summer 24h, winter 120h.Aquaculture wastewater after dilution at the hydraulic detention time of dilution in the aeration tank 2 is: summer 10h, winter 15h.The hydraulic detention time of aquaculture wastewater in diffusion cell 3 that flows out from dilution aeration tank 2 is: summer 26h, winter 44h.The aquaculture wastewater hydraulic detention times in the plant pond 4 in the open is: summer 48h, winter 72h.The hydraulic detention time of aquaculture wastewater in hothouse plants pond 5 is: summer 72h, winter 120h.The residence time of aquaculture wastewater in fishpond 6 is: summer 10h, winter 25h.
Claims (9)
1. one kind bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that this system comprises settling tank, dilution aeration tank, diffusion cell, open air vegetation pond, hothouse plants pond and the fishpond that links to each other successively by pipeline.
2. according to claim 1ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that, described dilution is provided with bio-carrier in the aeration tank, described bio-carrier is ecological cloth, and the top of this ecology cloth is provided with sleeve, and rope passes sleeve ecological cloth is suspended in the dilution aeration tank, the top of described ecological cloth is dense layer, the bottom is tectorium, and wherein, the bottom of ecological cloth cuts into strip.
3. according to claim 1ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that described dilution is provided with aeration tube in the aeration tank, this aeration tube be located at the gas blower that dilutes outside the aeration tank and be connected.
4. according to claim 1ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that, described diffusion cell is divided into the 1st grade～the 6th grade by the wall in the pond, the 1st grade of 1 meter thick filtering layer for being constituted by rubble or the slag of particle diameter 20～40mm, the 2nd～6 grade is the filtering layer that comprises bottom and upper strata, wherein bottom 20cm is thick, be that rubble or the slag of 20～40mm constitutes by particle diameter, upper strata 30cm is thick, is that rubble or the slag of 5～15mm constitutes by particle diameter; Plantation resistant water plant on the filtering layer of described diffusion cell.
5. according to claim 4ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that, the 1st grade of the diffusion cell with the 2nd grade between be connected by the perforation header, 3rd level with the 4th grade between by the perforation header be connected, the 5th grade with the 6th grade between be connected by the perforation header, the wall between the wall between the 2nd grade and the 3rd level and the 4th grade and the 5th grade is short other walls in the diffusion cell all.
6. according to claim 5ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that described perforation header evenly is laid at the bottom of the pond of diffusion cell.
7. according to claim 4ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that, the straight nogging of the Bian Biwei of described diffusion cell mixes structure, it is concrete structure at the bottom of the pond of diffusion cell, all lay the antiseepage plastics film at the bottom of the Bian Bi of diffusion cell and the pond, the bottom of the 2nd grade, the 4th grade and the 6th grade is provided with water shoot.
8. according to claim 1ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that described open air vegetation is provided with artificial ecological floating island in the pond, planting aquatic plants on the artificial ecological floating island.
9. according to claim 1ly a kind of bio-carrier is combined the system that administers aquaculture wastewater with ecological reestablishment, it is characterized in that put silver carp and variegated carp in the described fishpond in a suitable place to breed, the floating duckweed of the water surface in fishpond is put pasture and water in a suitable place to breed in the water of fishpond.
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| CN 201320123893 CN203144243U (en) | 2013-03-18 | 2013-03-18 | System for treating breeding wastewater through combination of biological carrier and ecological restoration technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445302A (en) * | 2017-07-26 | 2017-12-08 | 中国科学院水生生物研究所 | The Intensive Farm of Pig Raising waste water multi-stage ecological agricultural consumption pool and its method |
| CN108675552A (en) * | 2018-05-21 | 2018-10-19 | 湖南骁睿农业生态科技有限公司 | A kind of sink concentrates the scrap concrete and tail water administering method of cultured fishes |
| CN110092534A (en) * | 2019-04-19 | 2019-08-06 | 王涛 | A kind of biodegradable sanitary wastewater processing system and its application method |
-
2013
- 2013-03-18 CN CN 201320123893 patent/CN203144243U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445302A (en) * | 2017-07-26 | 2017-12-08 | 中国科学院水生生物研究所 | The Intensive Farm of Pig Raising waste water multi-stage ecological agricultural consumption pool and its method |
| CN108675552A (en) * | 2018-05-21 | 2018-10-19 | 湖南骁睿农业生态科技有限公司 | A kind of sink concentrates the scrap concrete and tail water administering method of cultured fishes |
| CN110092534A (en) * | 2019-04-19 | 2019-08-06 | 王涛 | A kind of biodegradable sanitary wastewater processing system and its application method |
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