CN108423832B - Dog-tooth split type multi-connected ecological purification tank - Google Patents
Dog-tooth split type multi-connected ecological purification tank Download PDFInfo
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- CN108423832B CN108423832B CN201810280537.6A CN201810280537A CN108423832B CN 108423832 B CN108423832 B CN 108423832B CN 201810280537 A CN201810280537 A CN 201810280537A CN 108423832 B CN108423832 B CN 108423832B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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Abstract
The invention discloses a dog-tooth split type multi-connected ecological purification tank, which comprises a purification tank, a plurality of porous purification bricks, aquatic plants and a plurality of barrier strips, wherein a water inlet of the purification tank is communicated with a water channel, the bottom of the purification tank is provided with the plurality of barrier strips, and the plurality of barrier strips divide the bottom of the purification tank into a plurality of strip-shaped areas; the aquatic plants and the porous purification bricks are fixed among the plurality of barrier strips at intervals, a plurality of porous purification bricks are arranged between the adjacent barrier strips at intervals, and the two adjacent rows of porous purification bricks are arranged in a staggered manner. The invention integrates three water quality purification means of plant absorption, microbial degradation and photocatalytic removal into a whole to form a complementary purification mode, thereby effectively reducing the concentration of various pollutants in the water body and improving the water quality purification efficiency; the porous purification bricks are arranged in a dog-tooth staggered manner, and water flows in the purification tank in a curved manner, so that the hydraulic retention time of sewage in the purification tank is prolonged, the water passing amount in the porous purification bricks is increased, and the water quality purification efficiency is greatly improved.
Description
Technical Field
The invention relates to a split type multi-connected ecological purification tank for canine teeth, and belongs to the technical field of water environment protection.
Background
With the rapid development of social economy and the further improvement of agricultural intensification degree, the contradiction among agricultural ecological environment, natural resources and human sustainable development is increasingly prominent. In agricultural production, a great amount of pesticides and chemical fertilizers are used, agricultural wastes are unreasonably disposed, and pollutants enter downstream water bodies after rainwater washing, surface runoff and soil infiltration, so that nitrogen, phosphorus, pesticides, organic pollutants and the like in the water bodies seriously exceed standards, the water body environment quality is continuously deteriorated, a series of environmental problems such as wetland degradation, ecological system biological diversity reduction, red tide and the like are caused, and meanwhile, the water safety of people's life and industrial and agricultural production is also endangered, and the pollutants become important factors for restricting the sustainable development of agriculture and rural areas in China. Therefore, the drainage pollution caused by agricultural non-point source pollution is controlled by adopting an effective method and an effective device, and the method has urgent and long-term strategic significance for ensuring the water quality safety of rivers and lakes and the sustainable development of the social economy of the drainage basin.
The agricultural non-point source polluted water contains a lot of dissolved or suspended pollutants, the components are quite complex, and the biodegradability is poor. The traditional methods of adsorption, precipitation, electrolysis, coagulation and precipitation, breakpoint chlorination and the like can only remove one or two pollutants, and the complex water body can be purified and finished through the series connection of a plurality of procedures, so that the method not only occupies a large amount of effective cultivated land area, but also greatly improves the treatment cost, and is limited in use.
The biological purification technology is a commonly used technology for non-point source pollution at present, and mainly forms a microbial film on the surface of a filler by utilizing microorganisms, when sewage passes through the biological film, pollutants in a water body are adsorbed by the biological film, and the microorganisms decompose and metabolize the pollutants into small molecules through assimilation and dissimilation, absorb the pollutants and release carbon dioxide and oxygen, so that the water body purification effect is achieved. However, the microorganism has limited degradation types of pollutants, so that the efficiency of the method for purifying the single water quality is not high, the method has strict limitation on the environment, and the application range is limited.
The aquatic plant purification technology is also a common method in water pollution treatment, and the aquatic plants can absorb and decompose nutrients in water into carbon dioxide or oxygen in the growth process, so that the aquatic plant purification technology has a positive effect on water quality purification. However, water pollutants often contain a plurality of toxic substances, which have destructive effects on aquatic plants and can seriously affect the absorption and degradation effects of the aquatic plants on the water pollutants, so that the adoption of the aquatic plants has limited efficiency in removing the pollution to the surface sources.
The photocatalysis technology is a green technology with important application prospect in the field of energy and environment, organic dirt can be thoroughly degraded into carbon dioxide and water under the irradiation of light, meanwhile, the photocatalysis material has no loss, and is considered as a revolutionary breakthrough in the field of environmental purification in the 21 st century by the environmental protection boundary. Meanwhile, the photocatalytic material has weak selectivity on pollutants in water, can carry out high-efficiency catalytic decomposition on most of pollutants which are difficult to degrade, and is a novel water treatment technology with application prospect.
Therefore, aiming at the various change trends of diversified pollutant types, difficult degradation, biotoxicity and the like in the current water environment treatment, a high-efficiency sewage purification device integrating microorganism, plant and photocatalytic coupling is urgently needed to be developed, so that the sewage purification and restoration of various polluted water bodies are effectively carried out, and the method has important significance for the water environment treatment in China.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide the canine-tooth split type multi-connected ecological purification tank, which can effectively decontaminate and purify polluted water bodies through the effective coupling of three methods of plant absorption, microbial degradation and photocatalytic removal and has the advantages of high purification efficiency, strong adaptability, small occupied area, convenience in maintenance and the like.
In order to achieve the purpose, the invention provides a dog-tooth split type multi-connected ecological purification tank which comprises a purification tank, a plurality of porous purification bricks, aquatic plants and a plurality of barrier strips, wherein a water inlet of the purification tank is communicated with a water channel, the bottom of the purification tank is provided with the barrier strips, and the barrier strips divide the bottom of the purification tank into a plurality of strip-shaped areas; the aquatic plant with porous purification brick interval is fixed in a plurality of between the blend stop, has a plurality ofly between the adjacent blend stop porous purification brick interval arrangement, adjacent two is listed as staggered arrangement between the porous purification brick.
Preferably, the porous purification brick comprises a porous photocatalytic layer positioned on the upper part and a microbial purification layer positioned on the lower part, wherein the surface of the porous photocatalytic layer is sequentially coated with an organic silicon resin layer and a nanocrystalline titanium dioxide film layer with photocatalytic performance; the microbial purification layer is a mixture at least comprising crushed stone, cement, sand and water.
Preferably, the aquatic plant is a leafy submerged plant, the root of the aquatic plant is planted in the soil between two adjacent barrier strips, and the growth height of the aquatic plant is lower than that of the porous purification brick.
Preferably, the purification tank is a cuboid with an open top, the purification tank is of a masonry concrete structure, the purification tank is arranged in the water channel, the left side and the right side of the purification tank are respectively provided with a water inlet and a water outlet which are communicated with the water channel, the depth of the purification tank is the same as that of the water channel, and the width of the purification tank is 3-4 times of that of the water channel.
Preferably, the barrier strips are of a masonry concrete structure, a plurality of barrier strips are arranged at the bottom of the purification tank at equal intervals perpendicular to the water flow direction, and the arrangement intervals among the barrier strips are 30-40 cm; the length of blend stop with the inside width of purification tank is the same, blend stop height is 30~40cm, thickness is 10~15 cm.
Preferably, the shape of the porous purification brick is a cuboid, the height of the porous purification brick is 100-120 cm, and the width of the porous purification brick is 30-40 cm; the material of the porous photocatalytic layer is foamed ceramic, the height of the porous photocatalytic layer is 40-50 cm, and the porous photocatalytic layer and the microbial purification layer are bonded into a whole by cement.
Preferably, the material of the porous photocatalytic layer is silicon carbide porous foamed ceramic, and the porosity is 15-20 PPI; the surface of the silicon carbide porous foamed ceramic is uniformly wrapped with an organic silicon resin layer with the thickness of 0.5-1 mm, and a nanocrystalline titanium dioxide film layer is adhered to the outer side of the organic silicon resin layer.
Preferably, the microorganism purification layer comprises crushed stone with the particle size of 0.3 cm-0.5 cm, cement, sand sieved by a 60-mesh sieve and water, wherein the mass ratio of the crushed stone, the cement, the sand and the water is 100: 15: 5: 10.
preferably, the lower parts of the porous purification bricks are inserted into the gap between two adjacent barrier strips in a manner of being vertical to the channel bed and are arranged at equal intervals in a manner of being vertical to the water flow direction, and the arrangement interval of two adjacent rows of the aquatic plants is equal to 2/3-1 times of the width of the porous purification bricks.
Preferentially, the water inlet weir and the water outlet weir are included, the thickness of each of the water inlet weir and the water outlet weir is 15-20 cm, the width of each of the water inlet weir and the water outlet weir is equal to the width of the water channel, and the height of each of the water inlet weir and the water outlet weir is 15-20 cm higher than the height of the barrier strip; the water inlet weir and the water outlet weir are respectively arranged at the water inlet and the water outlet of the purification tank; the water inlet weir and the water outlet weir are made of brick-stone concrete.
The invention achieves the following beneficial effects:
1. the invention integrates the three water quality purification means of plant absorption, microbial degradation and photocatalytic removal into a whole, fully exerts the advantages of the three different types of purification means, forms a complementary purification mode, can effectively reduce the concentration of various pollutants in the water body, improves the water quality purification efficiency and has strong adaptability;
2. the porous purification bricks are arranged in a dog-tooth staggered manner, and water flows in the purification tank in a curved manner, so that the hydraulic retention time of sewage in the purification tank is prolonged, the water passing amount in the porous purification bricks is increased, and the water quality purification efficiency is greatly improved.
3. The submerged plants and the porous purification bricks are arranged at intervals, so that the hydraulic retention time of the sewage is further prolonged, and the uniform arrangement of the plants and the purification bricks is favorable for uniformly and stably removing various pollutants. Meanwhile, the porous purification bricks can support submerged plants, so that the plants are prevented from lodging and growing in water flow, the flow area of the plants is increased, and the absorption efficiency of the plants to pollutants is improved. The submerged plants also play a supporting and protecting role for microorganisms attached to the perforated bricks, on one hand, oxygen released by plant photosynthesis is beneficial to the growth of the microorganisms, and on the other hand, the damage of water flow to the biological membrane caused by the impact of the microorganisms is also avoided.
4. The porous purification brick adopts an up-down combined structure, wherein the porous catalysis layer is positioned on the upper shallow water layer, so that the porous purification brick is beneficial to receiving sunlight irradiation and improving photocatalysis efficiency; and the biological purification layer is positioned on the deep water layer at the bottom, so that the sunlight irradiation intensity is low, and the normal growth of microorganisms is facilitated.
5. The porous purification bricks are movably inserted, the putting quantity and the putting distance can be freely adjusted according to the water passing quantity and the pollutant concentration in the ditch, and meanwhile, the porous purification bricks can be taken out, maintained and replaced at regular time, and the porous purification bricks are convenient to maintain and high in adaptability.
6. The purification tank is directly connected in series in the ditch, so that the occupied area is small, the construction is convenient, and the cost is low.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a sectional view taken along line A-A of the present invention;
FIG. 3 is a schematic view of a porous purification brick.
The figure is marked with the meaning, 1 is a purifying pool; 2 is an aquatic plant; 3 is a porous purification brick; 4 is a barrier strip; 5 is a ditch; 6 is the water flow direction; 7 is a farmland; 8 is a weir; 9 is an effluent weir; 10 a porous photocatalytic layer; 11 is a microbial decontamination layer; 12 is a trench bed; 13 is soil; 14 is the water surface.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A dog-tooth split type multi-connected ecological purification tank comprises a purification tank 1, a plurality of porous purification bricks 3, aquatic plants 2 and a plurality of barrier strips 4, wherein a water inlet of the purification tank 1 is communicated with a water channel 5, the bottom of the purification tank 1 is provided with the barrier strips 4, and the bottom of the purification tank 1 is divided into a plurality of strip-shaped areas by the barrier strips 4; the aquatic plant 2 with porous purification brick 3 interval is fixed in a plurality of between blend stop 4, have a plurality of between adjacent blend stop 4 porous purification brick 3 interval arrangement, adjacent two are staggered arrangement between the porous purification brick 3.
Further, the porous purification brick 3 comprises a porous photocatalytic layer 10 positioned on the upper part and a microbial purification layer 11 positioned on the lower part, wherein the surface of the porous photocatalytic layer 10 is sequentially coated with an organic silicon resin layer and a nanocrystalline titanium dioxide film layer with photocatalytic performance; the microbial purification layer 11 is a mixture including at least crushed stone, cement, sand, and water.
Furthermore, the aquatic plant 2 is a leafy submerged plant, the root of the aquatic plant 2 is planted in the soil 13 between two adjacent barrier strips 4, and the growth height of the aquatic plant 2 is lower than that of the porous purification brick 3.
Further, the purification tank 1 is a cuboid with an open top, the purification tank 1 is of a masonry concrete structure, the purification tank 1 is arranged in the water channel 5, a water inlet and a water outlet are formed in the left side and the right side of the purification tank 1 respectively and communicated with the water channel 5, the depth of the purification tank 1 is the same as that of the water channel 5, and the width of the purification tank 1 is 3-4 times of that of the water channel 5.
Furthermore, the barrier strips 4 are of a masonry concrete structure, the barrier strips 4 are arranged at the bottom of the purification tank 1 at equal intervals perpendicular to the water flow direction 6, and the arrangement intervals among the barrier strips 4 are 30-40 cm; the length of barrier strip 4 with the inside width of purification tank 1 is the same, barrier strip 4 is highly 30~40cm, and thickness is 10~15 cm.
Further, the shape of the porous purification brick 3 is a cuboid, the height is 100-120 cm, and the width is 30-40 cm; the porous photocatalytic layer 10 is made of foamed ceramic, the height of the porous photocatalytic layer 10 is 40-50 cm, and the porous photocatalytic layer 10 and the microorganism purification layer 11 are bonded into a whole by cement.
Further, the porous photocatalytic layer 10 is made of silicon carbide porous foamed ceramic, and the porosity is 15-20 PPI; the surface of the silicon carbide porous foamed ceramic is uniformly wrapped with an organic silicon resin layer with the thickness of 0.5-1 mm, and a nanocrystalline titanium dioxide film layer is adhered to the outer side of the organic silicon resin layer.
Further, the microorganism purification layer 11 in the invention comprises crushed stone with a particle size of 0.3 cm-0.5 cm, cement, sand sieved by a 60-mesh sieve and water, wherein the mass ratio of the crushed stone, the cement, the sand and the water is 100: 15: 5: 10.
furthermore, in the invention, the lower parts of the plurality of porous purification bricks 3 are inserted into the gap between two adjacent barrier strips 4 perpendicular to the channel bed 12 and are arranged at equal intervals in the direction perpendicular to the water flow direction 6, and the arrangement interval of two adjacent rows of the aquatic plants 2 is equal to 2/3-1 times of the width of the porous purification bricks 3.
Further, the water inlet weir 8 and the water outlet weir 9 are included, the thickness of each of the water inlet weir 8 and the water outlet weir 9 is 15-20 cm, the width of each of the water inlet weir 8 and the water outlet weir 9 is equal to the width of a water channel, and the height of each of the water inlet weir 8 and the water outlet weir 9 is 15-20 cm higher than the height of the barrier strip 4; the water inlet weir 8 and the water outlet weir 9 are respectively arranged at the water inlet and the water outlet of the purification tank 1; the water inlet weir 8 and the water outlet weir 9 are both made of brick-stone concrete.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The canine-tooth split type multi-connected ecological purification tank is characterized by comprising a purification tank (1), a plurality of porous purification bricks (3), aquatic plants (2) and a plurality of barrier strips (4), wherein a water inlet of the purification tank (1) is communicated with a water channel (5), the barrier strips (4) are arranged at the bottom of the purification tank (1), and the bottom of the purification tank (1) is divided into a plurality of strip-shaped areas by the barrier strips (4); the aquatic plants (2) and the porous purification bricks (3) are fixed among the plurality of barrier strips (4) at intervals, a plurality of porous purification bricks (3) are arranged among the adjacent barrier strips (4) at intervals, and the porous purification bricks (3) in two adjacent rows are arranged in a staggered manner;
the barrier strips (4) are of a masonry concrete structure, the barrier strips (4) are arranged at the bottom of the purification tank (1) at equal intervals perpendicular to the water flow direction (6), and the arrangement intervals among the barrier strips (4) are 30-40 cm; the length of the barrier strip (4) is the same as the width of the interior of the purification tank (1), the height of the barrier strip (4) is 30-40 cm, and the thickness of the barrier strip is 10-15 cm;
the porous purification brick (3) comprises a porous photocatalytic layer (10) positioned on the upper part and a microbial purification layer (11) positioned on the lower part, wherein the surface of the porous photocatalytic layer (10) is sequentially coated with an organic silicon resin layer and a nanocrystalline titanium dioxide film layer with photocatalytic performance; the microorganism purification layer (11) is a mixture at least comprising broken stones, cement, sand and water;
the aquatic plants (2) are leafy submerged plants, the roots of the aquatic plants (2) are planted in soil (13) between two adjacent barrier strips (4), and the growth height of the aquatic plants (2) is lower than that of the porous purification bricks (3);
the purifying pool (1) is a cuboid with an open top, the purifying pool (1) is of a masonry concrete structure, the purifying pool (1) is arranged in a water channel (5), the left side and the right side of the purifying pool (1) are respectively provided with a water inlet and a water outlet which are communicated with the water channel (5), the depth of the purifying pool (1) is the same as that of the water channel (5), and the width of the purifying pool (1) is 3-4 times of that of the water channel (5);
the material of the porous photocatalytic layer (10) is silicon carbide porous foam ceramic, and the porosity is 15-20 PPI; the surface of the silicon carbide porous foamed ceramic is uniformly coated with an organic silicon resin layer with the thickness of 0.5-1 mm, and a nanocrystalline titanium dioxide film layer is adhered to the outer side of the organic silicon resin layer;
a plurality of the lower parts of the porous purification bricks (3) are inserted into the gap between two adjacent barrier strips (4) in a way of being vertical to the channel bed (12) and are arranged in a way of being vertical to the water flow direction (6) at equal intervals, and the arrangement intervals of two adjacent rows of the aquatic plants (2) are equal to 2/3-1 times of the width of the porous purification bricks (3).
2. The split type multi-connected ecological purification tank for canine teeth as claimed in claim 1, wherein: the shape of the porous purification brick (3) is a cuboid, the height is 100-120 cm, and the width is 30-40 cm; the material of the porous photocatalytic layer (10) is foamed ceramic, the height of the porous photocatalytic layer (10) is 40-50 cm, and the porous photocatalytic layer (10) and the microorganism purification layer (11) are bonded into a whole by cement.
3. The split type multi-connected ecological purification tank for canine teeth as claimed in claim 1, wherein: the microbial purification layer (11) comprises crushed stone with the particle size of 0.3 cm-0.5 cm, cement, sand sieved by a 60-mesh sieve and water, wherein the mass ratio of the crushed stone to the cement to the sand to the water is 100: 15: 5: 10.
4. the split type multi-connected ecological purification pool for the canine teeth as claimed in claim 1, comprising an inlet weir (8) and an outlet weir (9), wherein the thickness of each of the inlet weir (8) and the outlet weir (9) is 15-20 cm, the width of each of the inlet weir (8) and the outlet weir (9) is equal to the width of a canal, and the height of each of the inlet weir (8) and the outlet weir (9) is 15-20 cm higher than the height of the barrier strip (4); the water inlet weir (8) and the water outlet weir (9) are respectively arranged at the water inlet and the water outlet of the purification tank (1); the water inlet weir (8) and the water outlet weir (9) are both made of brick-stone concrete.
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| CN201810280537.6A CN108423832B (en) | 2018-04-02 | 2018-04-02 | Dog-tooth split type multi-connected ecological purification tank |
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| CN111943312A (en) * | 2020-08-06 | 2020-11-17 | 河海大学 | Laminated double helical optical rotation catalytic purifier suitable for high-concentration wastewater |
| CN113754184B (en) * | 2021-08-25 | 2023-05-30 | 湖北省水利水电规划勘测设计院 | Ecological purification treatment gallery for water quality of river and lake life sewage discharge outlet |
| CN114956305B (en) * | 2021-11-19 | 2023-09-12 | 广州城建职业学院 | Ecological reconstruction method of drainage ditch of culture pond and straw carrier brick |
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| CN203319775U (en) * | 2013-06-06 | 2013-12-04 | 惠州市东江园林工程有限公司 | Ecological management structure for micro-polluted river channel |
| CN203451288U (en) * | 2013-08-30 | 2014-02-26 | 武汉大学 | Compound ecological ditch for treating surface source sewage in village |
| CN105130004A (en) * | 2015-09-30 | 2015-12-09 | 河海大学 | Multi-layer seepage type photocatalysis and ecological purification coupled bank revetment |
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| US8673615B2 (en) * | 2010-07-23 | 2014-03-18 | Krebs & Sisler L.P. | Enhanced photosynthesis and photocatalysis water treatment/biomass growth process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203319775U (en) * | 2013-06-06 | 2013-12-04 | 惠州市东江园林工程有限公司 | Ecological management structure for micro-polluted river channel |
| CN203451288U (en) * | 2013-08-30 | 2014-02-26 | 武汉大学 | Compound ecological ditch for treating surface source sewage in village |
| CN105130004A (en) * | 2015-09-30 | 2015-12-09 | 河海大学 | Multi-layer seepage type photocatalysis and ecological purification coupled bank revetment |
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