CN110759472A - River sewage treatment device - Google Patents
River sewage treatment device Download PDFInfo
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- CN110759472A CN110759472A CN201911129584.1A CN201911129584A CN110759472A CN 110759472 A CN110759472 A CN 110759472A CN 201911129584 A CN201911129584 A CN 201911129584A CN 110759472 A CN110759472 A CN 110759472A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/166—Nitrites
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a river sewage treatment device which comprises an ecological filter tank assembly, a biological filter tank for synchronously removing nitrogen and phosphorus from sewage and a purification and restoration unit for decomposing pollutants in water. According to the river sewage treatment device provided by the invention, the biological filter, the purification and restoration assembly and the ecological filter assembly are matched with each other, so that the water body is comprehensively purified and treated from the water surface to the water bottom, and simultaneously, plants and microorganisms in the water body are used for treating without adding extra chemical reagents, so that secondary pollution is avoided, too many mechanical equipment are not needed, the operation cost is increased, and aquatic plants for treating can be used as landscaping environment.
Description
Technical Field
The invention relates to the technical field of water body cleaning, in particular to a river sewage treatment device, and more particularly to an in-situ reinforced treatment device for a sewage outlet of an urban river.
Background
With the acceleration of the urbanization process and the improvement of the industrialization degree, the water pollution degree is increasingly intensified, and the seasonal or the black and odorous phenomenon and other serious problems occur in a plurality of water bodies such as urban rivers, lakes and reservoirs, and the water body is repaired to improve the water quality environment. The urban river channel is used as a water body for directly discharging urban production and domestic sewage, the pollution condition is more obvious, from the condition of on-site investigation of the urban river channel, the main sources of the existing river channel water pollution are pollution of non-interception sewage, runoff and mixed flow water, and from the data collection and on-site pollution investigation of the researched urban black and odorous river channel, the runoff pollution formed by the non-interception sewage and rainfall and the mixed flow of the non-rainy season sewage into the rainwater pipeline become important sources of the river channel water body pollution.
The key of city black and odorous river course water renovation work lies in intercepting dirty admission pipe, distribution of rain and sewage, the sewage discharge of control drain, but some drains do not possess and intercept dirty admission pipe condition, need handle the polluted water body of drain through setting up other modes such as integrated processing apparatus, constructed wetland, and investment cost is high, and area is big, and the management degree of difficulty is big. Therefore, in order to solve the problem of direct discharge of sewage at the sewage outlet, the in-situ treatment device and the method for sewage at the sewage outlet of the river channel, which have the advantages of small engineering quantity, low cost and convenience in management, need to be researched by combining the actual situation of the sewage outlet of the river channel in consideration of various factors such as water purification efficiency, landscape effect, environmental compatibility, convenience in implementation and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of high cost and poor purification effect in the existing urban black and odorous river treatment technology, so that the river sewage treatment device which is free of secondary pollution, low in operation cost and good in water purification effect is provided.
The invention provides a river sewage treatment device, which comprises,
the ecological filter assembly comprises at least one ecological filter for adsorbing nitrogen and phosphorus and improving sewage transparency, and the ecological filter is arranged on one side of the biological filter and communicated with the biological filter;
purify and restore subassembly, including at least one purification restoration unit that is used for decomposing aquatic pollutant, purify the restoration unit set up in on the ecological filter tank and with the ecological filter tank intercommunication.
Furthermore, a plurality of partition plates for dividing the biological filter into a first reaction zone, a second reaction zone and a third reaction zone are arranged in the biological filter at intervals;
the first reaction zone is positioned in the center of the biological filter, the reaction zone is an anaerobic reaction zone, although the phosphorus accumulating bacteria are aerobic bacteria, the movement capacity is very weak, the proliferation is slow, the phosphorus accumulating bacteria are superior to other aerobic bacteria in competition of utilizing organic matters, so that the phosphorus accumulating bacteria become the dominant flora in the reaction zone, the reaction zone has the main functions of releasing phosphorus, increasing the concentration of P in sewage, and absorbing soluble organic matters by microbial cells to enable BOD in the sewage to be absorbed by the microbial cells5Decrease in concentration, in addition, NH3-N is partially removed by cell synthesis to make NH in the wastewater3Decrease in-N concentration, but NO3-no change in N content;
the second reaction area is positioned at two sides of the first reaction area, the reaction area is an anoxic reaction area, the sewage passing through the first reaction area enters the reaction area, and the denitrifying bacteria utilize organic matters in the sewage as carbon sources to carry a large amount of NO into the sewage3-N and NO2Reduction of-N to N2Released to the air, hence BOD5Decrease in concentration, NO3The N concentration decreases substantially, while the phosphorus changes little;
the third reaction zone is positioned at one side of the second reaction zone far from the first reaction zone, the reaction zone is an aerobic reaction zone, organic matters in the reaction zone are biochemically degraded by microorganisms and continuously descend, and organic nitrogen is aminated and then nitrified to ensure that NH is generated3The N concentration drops significantly, but NO is produced as a result of the nitration process3The concentration of N is increased, P is also decreased at a higher speed along with the excessive intake of the phosphorus accumulating bacteria, and the reaction zone carries out nitration and phosphorus absorption reactions;
the first reaction zone is communicated with the second reaction zone and the third reaction zone in sequence to form a broken line type flow channel;
one end of the partition board is fixed on one side bank of the river channel, and the other end of the partition board extends into the river channel and has a gap with the other side bank of the river channel.
Furthermore, a mud-water separator for separating silt and sewage is arranged in the first reaction zone;
a plurality of float type surface aerators for aeration and oxygenation are arranged in the third reaction zone at intervals.
Furthermore, the purification and restoration unit comprises a net-shaped bracket arranged on the water surface, two sides of the net-shaped bracket are respectively fixed on two banks of the river channel, planting base discs are arranged in meshes of the net-shaped bracket, emergent aquatic plants are planted in the planting base discs, and screening of the plants is performed according to actual conditions, wherein the plants comprise canna, saxifraga, aquatic iris, calamus and the like, and the purification and restoration unit has a water purification effect and can play a role in landscape; the lower part of the planting basal disc is hung with a carbon fiber biological rope, and a micropore aeration device is arranged below the carbon fiber biological rope.
Furthermore, the carbon fiber biological rope is formed by bundling 10000-;
the micropore aeration device comprises a micropore aeration pipe and a conical tower-shaped support, wherein the micropore aeration pipe is wound on the conical tower-shaped support, and the conical tower-shaped support is fixed on the net-shaped bracket through an iron wire.
Preferably, the first filler unit is a sponge iron-AT-PVF composite filler and is formed by uniformly filling attapulgite composite hydrophilic polyurethane foam cut into 1.5cm multiplied by 1.5cm and sponge iron with the particle size of 2-5 cm according to the weight ratio of 1: 4-50.
Furthermore, a gravel group layer is arranged at the bottom layer of the ecological filter tank, and the living environment of aquatic organisms is improved by locally changing the flow state of a river water body, so that a habitat is provided for the aquatic organisms; the gravel group layer is provided with the submerged plant layer, so that purification effects of intercepting suspended matters, absorbing nitrogen and phosphorus, improving transparency and the like are achieved.
Preferably, the gravel group layer is formed by tiling irregular large-angle limestone, basalt, granite or cobblestones which are rough in surface, porous and 0.5-1m in diameter, 3-4 gravels form a gravel group, adjacent gravels are meshed with each other, and the distance between the adjacent gravel groups is 3-4 m;
iron wire cage grids are arranged on the surface of the gravel group layer, a plurality of second spherical carrier boxes are arranged in the iron wire cage grids AT intervals, second filler units which are composed of fillers and can adsorb microbial membranes formed by microbial communities are arranged in the second spherical carrier boxes, the microbial membranes are used for decomposing pollutants, and the second filler units are sponge iron-AT-PVF composite fillers.
The submerged plant layer comprises ecological bags and submerged plants planted in the ecological bags, the ecological bags are arranged on the iron wire cage grids at intervals, soil, sand mixture or natural soil and river sand are filled in the bags according to the proportion of 2:1, the height of the bags is 20cm-30cm, the submerged plants are screened according to actual conditions, and one or more of potamogeton sericea, potamogeton perforata, cauliflower, hypsizygus marmoreus, calamus, sowthistle herb, hornworts aurantiaca, waterweed, waterplantain, watercress watermifolius or hydrilla verticillata can be selected.
Preferably, a layer of nylon gauze is arranged outside the wire cage grids, so that the second spherical carrier box and the ecological bag are prevented from losing along with the water body, and the impact of the water body on a gravel group layer is reduced.
Furthermore, still include and permeate water and separate the net groove, permeate water and separate the net groove set up in on the ecological filter and cover the water inlet of ecological filter, permeate water and separate net groove aperture and be 0.03mm ~ 0.8mm, can hold back thick rubbish and floaters such as fallen leaves in separating the net groove, the rubbish that gets off is held back in the inslot is regularly cleared up. Permeate water and separate the dirty basket of storage that sets up in the screen groove and be used for holding back floater in the sewage that comes from the river course drain, through the setting of storing up dirty basket, the great impurity of volume falls in storing up dirty basket, and the dirty basket of river course salvage personnel accessible of keeping a public place clean regularly clears up the impurity that stores up in dirty basket, guarantees to store up the dirty basket of storage dirty effect.
The technical scheme of the invention has the following advantages:
1. the in-situ strengthening treatment device provided by the invention carries out the purification treatment of total extinguishment on the water body from the water surface to the water bottom through the mutual matching of the biological filter, the purification and restoration component and the ecological filter component, simultaneously uses the plants and the microorganisms in the water body for treatment, does not need to add extra chemical reagents, does not cause secondary pollution, does not need too much mechanical equipment to increase the operation cost, and the plants for treatment can also be used as landscaping environment.
2. The biological filter provided by the invention is divided into an anaerobic reaction area, an anoxic reaction area and an aerobic reaction area according to the oxygen content by a mud-water separator and a buoy surface aerator, wherein main bacterial colonies of different reaction areas are different due to different oxygen contents, sewage firstly enters the anaerobic reaction area, and phosphorus accumulation bacteria in the main body of the anaerobic reaction area accumulate and release phosphorus in the sewage; then the sewage enters an anoxic reaction zone, the sewage provides nutrients for heterotrophic facultative denitrifying bacteria in the main body of the anoxic reaction zone, denitrification reaction is carried out, phosphorus is removed, and the over-high concentration of nitrate in water caused by the subsequent nitrification reaction in the aerobic reaction zone is avoided; then the sewage enters an aerobic reaction zone and is subjected to nitrification and phosphorus absorption reaction by autotrophic aerobic nitrifying bacteria of the main body.
3. The application provides a purify the restoration unit through the emergent aquatic plant that has the water purification effect with adsorb through carbon fiber and filler and come the microbial community combined action, the pollutant in the water purification body to can intercept partial floater, the micropore aeration equipment of lower part setting can provide oxygen for the emergent aquatic plant, the submerged plant in microbial community and the below ecological filter.
4. Because mud-water separator and biological filter among the biological filter and the aeration opportunity among the unit is restoreed in the purification turn over the water, the ecological filter that this application provided, gravel crowd layer and benthophyte cooperation can play the effect of fixed submarine silt, and benthophyte can also play the effect of clarifying the water in purifying the water simultaneously, settles the filler adsorbable microbial community in the carrier box on gravel crowd layer surface and purifies submarine pollutant.
5. The application provides a permeate water and separate the net groove, can intercept most by the large-scale rubbish and the floater of river course blowdown mouth outflow, prevent that these large-scale rubbish from getting into other systems of this application and causing the influence.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a river sewage treatment device provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of the biofilter of FIG. 1;
FIG. 3 is a schematic diagram of the configuration of the decontamination remediation unit of FIG. 1;
fig. 4 is a schematic structural view of the ecological filter tank in fig. 1.
Description of reference numerals:
1-biological filter; 11-a first reaction zone; 12-a second reaction zone; 13-a third reaction zone; 14-a mud-water separator; 15-a float-type surface aerator; 16-a separator;
2-purifying and repairing the unit; 21-a mesh tray; 22-planting a basal disc; 23-emergent aquatic plants; 24-carbon fiber bio-rope; 25-a first spheroidal carrier case; 26-a microporous aeration device; 27-iron wire;
3-an ecological filter tank; 31-gravel group; 32-ecological bag, 33-submerged plant; 34-a second spheroidal carrier case;
4-water permeable mesh separating groove; 5-river sewage draining exit.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific implementation of the river sewage treatment device shown in fig. 1 applied to the in-situ treatment of the urban river sewage discharge outlet comprises,
the biological filter comprises an ecological filter assembly and a biological filter 1 for removing nitrogen and phosphorus from sewage, wherein the ecological filter assembly comprises two ecological filters 3 for adsorbing nitrogen and phosphorus and improving sewage transparency, and the ecological filters 3 are arranged on one side of the biological filter 1 and are communicated with each other;
purify and restore subassembly, including two purification restoration units 2 that are used for decomposing aquatic pollutant, purification restoration unit 2 set up in ecological filter 3 go up and with ecological filter 3 intercommunication.
Biological filter 1 is located river drain 5 under, and biological filter 1, purify the width of restoreing unit 2 and ecological filter 3 and the river course width of river drain 5 department the same.
As shown in fig. 2, a plurality of partition boards 16 for dividing the biological filter into a first reaction zone 11, a second reaction zone 12 and a third reaction zone 13 are arranged at intervals in the biological filter 1;
the first reaction zone 11 is located in the center of the biological filter 1, the reaction zone is an anaerobic reaction zone, although the phosphorus accumulating bacteria are aerobic bacteria, the movement capacity of the phosphorus accumulating bacteria is weak, the proliferation is slow, the phosphorus accumulating bacteria are more dominant than other aerobic bacteria in competition of utilizing organic matters, so that the phosphorus accumulating bacteria become the dominant flora in the reaction zone, the reaction zone has the main function of releasing phosphorus, the concentration of P in sewage is increased, and soluble organic matters are absorbed by microbial cells to ensure that BOD in the sewage is increased5Decrease in concentration, in addition, NH3-N is partially removed by cell synthesis to make NH in the wastewater3Decrease in-N concentration, but NO3-no change in N content;
the second reaction zone 12 is positioned at two sides of the first reaction zone 11, the reaction zone is an anoxic reaction zone, the sewage passing through the first reaction zone 11 enters the reaction zone, and the denitrifying bacteria utilize organic matters in the sewage as carbon sources to carry a large amount of NO into the sewage3-N and NO2Reduction of-N to N2Released to the air, hence BOD5Decrease in concentration, NO3The N concentration decreases substantially, while the phosphorus changes little;
the third reaction zone 13 is located on the side of the second reaction zone 12 far away from the first reaction zone 11, the reaction zone is an aerobic reaction zone, organic matters in the reaction zone are biochemically degraded by microorganisms and continuously descend, and organic nitrogen is aminated and then nitrified to ensure that NH is generated3The N concentration drops significantly, but NO is produced as a result of the nitration process3The concentration of N is increased, P is also decreased at a higher speed along with the excessive intake of the phosphorus accumulating bacteria, and the reaction zone carries out nitration and phosphorus absorption reactions;
the first reaction zone 11 is communicated with the second reaction zone 12 and the third reaction zone 13 in sequence to form a broken line type flow channel;
one end of the partition plate 16 is fixed on one side bank of the river channel, and the other end of the partition plate extends into the river channel and has a gap with the other side bank of the river channel.
A mud-water separator 14 for separating silt and sewage is arranged in the first reaction zone 11;
a plurality of float type surface aerators 15 for aeration and oxygenation are arranged in the third reaction zone 13 at intervals.
As shown in fig. 1, the purifying and restoring unit 2 includes a net-shaped bracket 21 disposed on the water surface, two sides of the net-shaped bracket 21 are respectively fixed on two sides of the river, planting base discs 22 are disposed in meshes of the net-shaped bracket 21, emergent aquatic plants 23 are planted in the planting base discs 22, and screening of plants including canna, saxifrage, aquatic iris, calamus and the like is performed according to actual conditions, so that the purifying and restoring unit has a water purifying effect and a landscape effect; a carbon fiber biological rope 24 is hung at the lower part of the planting basal disc 22, and a micropore aeration device 26 is arranged below the carbon fiber biological rope 24.
The carbon fiber biological rope 24 is formed by bundling 10000-;
the microporous aeration device 26 comprises a microporous aeration pipe and a conical tower-shaped bracket, wherein the microporous aeration pipe is wound on the conical tower-shaped bracket, and the conical tower-shaped bracket is fixed on the reticular bracket 21 through an iron wire 27.
The first filler unit is sponge iron-AT-PVF composite filler and is formed by uniformly filling attapulgite composite hydrophilic polyurethane foam cut into 1.5cm multiplied by 1.5cm and sponge iron with the particle size of 2-5 cm according to the weight ratio of 1: 4-50.
As shown in fig. 3, the bottom layer of the ecological filter 3 is provided with a gravel group 31 layer, and the living environment of aquatic organisms is improved by locally changing the flow state of a river water body, so that a habitat is provided for the aquatic organisms; and the gravel group 31 layer is provided with a submerged plant 33 layer, so that the purification effects of intercepting suspended matters, absorbing nitrogen and phosphorus, improving transparency and the like are achieved.
Wherein the gravel group 31 layer is formed by tiling irregular large-edge-angle limestone, basalt, granite or cobblestones with rough and porous surfaces and the diameter of 0.5-1m, 3-4 gravels form the gravel group 31, adjacent gravels are meshed with each other, and the distance between the adjacent gravel groups 31 is 3-4 m;
an iron wire cage grid is arranged on the surface of the gravel group 31, a plurality of second spherical carrier boxes 34 are arranged in the iron wire cage grid AT intervals, second filler units which are composed of fillers and can adsorb microbial membranes to form the microbial membranes are arranged in the second spherical carrier boxes 34, the microbial membranes are used for decomposing pollutants, and the second filler units are sponge iron-AT-PVF composite fillers.
The submerged plant 33 layer comprises ecological bags 32 and submerged plants 33 planted in the ecological bags 32, the ecological bags 32 are arranged on the iron wire cage grids at intervals, soil, sand mixtures or natural soil and river sand are filled in the bags according to the proportion of 2:1, the height of the bags is 20cm-30cm, the submerged plants are screened according to actual conditions, and one or more of potamogeton sericea, potamogeton perforatum, cauliflower, glaucocalyx hybridus, calamus marmoreus, hornworts, plantago asiatica, watermifoil or hydrilla verticillata can be selected.
A layer of nylon gauze is arranged outside the iron wire cage grids, so that the second spherical carrier box 34 and the ecological bag 32 are prevented from losing along with the water body, and the impact of the water body on the 31 layers of gravel groups is reduced.
As shown in figure 1, the ecological filter further comprises a permeable screen separation groove 4, the permeable screen separation groove 4 is arranged on the ecological filter and covers a water inlet of the ecological filter, the aperture of the permeable screen separation groove 4 is 0.03 mm-0.8 mm, coarse garbage, fallen leaves and other floaters can be intercepted in the permeable screen separation groove 4, and the garbage intercepted in the groove is cleaned regularly. Permeate water and separate the dirty basket of storage that sets up in the wire groove 4 and be used for holding back floater in the sewage that comes from the river course drain, through the setting of storing up dirty basket, the great impurity of volume falls in storing up dirty basket, and the dirty basket of river course salvage personnel accessible of keeping a public place clean regularly clears up the impurity that stores up in dirty basket, guarantees to store up the dirty basket of storage dirty effect.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A river sewage treatment device is characterized by comprising,
the ecological filter assembly comprises at least one ecological filter for adsorbing nitrogen and phosphorus and improving sewage transparency, and the ecological filter is arranged on one side of the biological filter and communicated with the biological filter;
purify and restore subassembly, including at least one purification restoration unit that is used for decomposing aquatic pollutant, purify the restoration unit set up in on the ecological filter tank and with the ecological filter tank intercommunication.
2. The river sewage treatment device according to claim 1, wherein a plurality of partition plates for dividing the biological filter into a first reaction zone, a second reaction zone and a third reaction zone are arranged at intervals in the biological filter, and the first reaction zone is positioned in the center of the biological filter; the second reaction zone is positioned at two sides of the first reaction zone; the third reaction zone is positioned on one side of the second reaction zone far away from the first reaction zone; the first reaction zone is communicated with the second reaction zone and the third reaction zone in sequence to form a broken line type flow channel.
3. The river sewage treatment device of claim 2, wherein a sludge-water separator for separating silt and sewage is arranged in the first reaction zone; a plurality of float type surface aerators for aeration and oxygenation are arranged in the third reaction zone at intervals.
4. The river sewage treatment device according to claim 1, wherein the purification and remediation unit comprises a net-shaped bracket arranged on the water surface, two sides of the net-shaped bracket are respectively fixed on two banks of the river, a planting base plate is arranged in meshes of the net-shaped bracket, emergent aquatic plants are planted in the planting base plate, a carbon fiber biological rope is hung on the lower portion of the planting base plate, and a micro-pore aeration device is arranged below the carbon fiber biological rope.
5. The river sewage treatment device according to claim 4, wherein the carbon fiber biological rope is formed by bundling 10000-15000 micro fibrils of 5-10 micrometers, a plurality of first spherical carrier boxes are arranged on the carbon fiber biological rope at intervals from top to bottom, and first filler units arranged in the carbon fiber biological rope and the first spherical carrier boxes can adsorb microbial groups to form a microbial film which is used for decomposing pollutants;
the micropore aeration device comprises a micropore aeration pipe and a conical tower-shaped support, wherein the micropore aeration pipe is wound on the conical tower-shaped support, and the conical tower-shaped support is fixed on the net-shaped bracket through an iron wire.
6. The river sewage treatment device of claim 1, wherein the bottom layer of the ecological filter tank is provided with a gravel group layer, and a submerged plant layer is arranged on the gravel group layer.
7. The river sewage treatment device of claim 6, wherein the gravel group layer is formed by tiling gravel with rough surface, multiple holes and irregular large edge angles with the diameter of 0.5-1m, 3-4 gravel groups are formed by the gravel, adjacent gravel groups are meshed with each other, and the distance between the adjacent gravel groups is 3-4 m;
iron wire cage net is arranged on gravel crowd layer surface, the interval sets up a plurality of spherical carrier boxes of second in the iron wire cage net, set up the second filler unit that the adsorbable microbial community that comprises the filler forms the microbial membrane in the spherical carrier box of second, the microbial membrane is used for decomposing pollutants.
8. The river sewage treatment device of claim 7, wherein the submerged plant layer comprises ecological bags and submerged plants planted in the ecological bags, and the ecological bags are arranged on the wire cage grids at intervals.
9. The river sewage treatment device according to any one of claims 1 to 8, further comprising a water-permeable screen groove, wherein the water-permeable screen groove is arranged on the ecological filter tank and covers the water inlet of the ecological filter tank, and a sewage storage basket for intercepting floaters in sewage from a sewage outlet of a river is arranged in the water-permeable screen groove.
10. The river sewage treatment device of claim 2, wherein one end of the partition is fixed to one side of the river bank, and the other end of the partition extends into the river bank and has a gap with the other side of the river bank;
the first reaction zone is an anaerobic reaction zone; the second reaction zone is an anoxic reaction zone; the third reaction zone is an aerobic reaction zone.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117142659A (en) * | 2023-10-27 | 2023-12-01 | 广州市藏绿环保工程技术有限公司 | Rural domestic sewage treatment's compound ecological filtering pond |
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