CN110963657A - In-situ remediation device and in-situ remediation method for black and odorous water body sediment - Google Patents

In-situ remediation device and in-situ remediation method for black and odorous water body sediment Download PDF

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CN110963657A
CN110963657A CN201911393137.7A CN201911393137A CN110963657A CN 110963657 A CN110963657 A CN 110963657A CN 201911393137 A CN201911393137 A CN 201911393137A CN 110963657 A CN110963657 A CN 110963657A
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water
box
induction reaction
water body
tank
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CN110963657B (en
Inventor
张家兴
李红军
霍兴阳
杨星
孙万林
朱鸣一
孙红林
李伯
李九智
宋绚臻
王齐
葛绘锋
王凯垒
周志军
吴义平
吴亚松
郝凯波
陈涛
王江涛
刘冬冬
倪锁阳
张学萌
侯志广
张旭雷
李敬华
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Hebei Jiuhua Prospecting Mapping Co ltd
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Hebei Jiuhua Prospecting Mapping Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/02Biological treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention relates to the technical field of water body remediation, in particular to an in-situ remediation device and an in-situ remediation method for black and odorous water body sediment. The invention provides an in-situ remediation device for black and odorous water body sediment, which comprises a biological catalysis system, an induction reaction system and a combined filler system which are sequentially communicated; the water outlet of the combined filler system is communicated with the water inlet of the biological catalysis system; the biological catalysis system is arranged on land; the induction reaction system and the combined filler system are arranged at the bottom of the black and odorous water body. The three systems in the device provided by the invention operate simultaneously, so that the hydrodynamic force of the target water body can be increased, the dynamic circulation in an independent water area is realized, the dissolved oxygen in water is increased, the whole water area can be comprehensively repaired, and the problems of water body blackness returning and water quality repeated deterioration in the black and odorous water body treatment process are solved.

Description

In-situ remediation device and in-situ remediation method for black and odorous water body sediment
Technical Field
The invention relates to the technical field of water body remediation, in particular to an in-situ remediation device and an in-situ remediation method for black and odorous water body sediment.
Background
At present, the main methods for treating the bottom mud in the black and odorous river include the following methods: (1) the sediment dredging technology comprises the following steps: carrying out mechanical dredging on the polluted river channel, digging out bottom mud from the river bottom by adopting mechanical equipment, and transferring the bottom mud to other places for ex-situ harmless treatment; (2) in-situ covering technology: one or more layers of clean covering materials are paved on the surface of the polluted bottom sediment to isolate the polluted bottom sediment from the upper water body, so that the migration of pollutants in the bottom sediment to the water body is prevented. The two methods have the common advantages of quick response, but simultaneously face the problems of high construction cost, damage to the original ecological system in the water body, easy secondary pollution and the like.
Chinese patent CN206502728U discloses an in situ treatment device of black and odorous water body bed mud, including the sealed cowling with be arranged in carrying out the aeration disturbance's aeration equipment to the bed mud in the sealed cowling, the device can effectively administer the pollutant in black and odorous water body and the bed mud, but can only carry out local normal position to certain point and restore, can't restore comprehensively to whole waters, quality of water easily worsens repeatedly, the repair effect is difficult to keep for a long time.
Disclosure of Invention
The invention aims to provide an in-situ remediation device for bottom mud of a black and odorous water body, which can be used for comprehensively remedying the whole water area and solves the problems of black water body and repeated deterioration of water quality in the black and odorous water body treatment process.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides an in-situ remediation device for black and odorous water body sediment, which comprises a biological catalysis system, an induction reaction system and a combined filler system which are sequentially communicated; the water outlet of the combined filler system is communicated with the water inlet of the biological catalysis system;
when in use, the biological catalysis system is arranged on land; the induction reaction system and the combined filler system are arranged at the bottom of the black and odorous water body;
the biological catalysis system comprises a plurality of biological catalysis boxes; a first water tank 12 and a second water tank 7 which are communicated in sequence are arranged in each biological catalysis tank; a first aeration device is arranged in the first water tank 12; a biocatalyst feeding device 6 and a second aeration device 9 are arranged in the second water tank 7;
the induction reaction system comprises a plurality of induction reaction boxes; a third aeration device 21 is arranged in each induction reaction box; the bottom of each induction reaction box is provided with a plurality of through holes;
the combined packing system comprises a plurality of combined packing boxes; the cavity of each combined stuffing box is provided with two rings of detachable grids at intervals along the vertical direction, the cavity of each combined stuffing box is divided into three coaxial boxes, namely an inner box, a middle box and an outer box from inside to outside; volcanic rock is filled in the outer layer box body, zeolite is filled in the middle layer box body, and activated carbon is filled in the inner layer box body;
a water inlet 26 is arranged on the side wall of the combined stuffing box; and a water outlet 24 is formed in the top or the bottom of the inner layer box body in the combined stuffing box.
Preferably, when the biocatalytic system comprises a plurality of biocatalytic tanks, the plurality of biocatalytic tanks are combined in parallel or in series;
a channel for placing power equipment is also arranged in each biological catalysis box; the power equipment comprises a self-priming water pump 3, an oxygenation air pump 1 and a vortex fan 4.
Preferably, a first aeration device in the first water tank 12 is communicated with the oxygen-increasing air pump 1;
the second aeration device 9 in the second water tank 7 is communicated with the vortex fan 4;
the third aeration device 21 in the induction reaction box is communicated with the vortex fan 4.
Preferably, the combination mode of a plurality of induction reaction boxes in the induction reaction system is parallel connection or series connection; the side wall of the induction reaction box is provided with a plurality of first through holes 15.
Preferably, a horizontal baffle is arranged in the induction reaction box to divide the induction reaction box into an upper box body and a lower box body; the height ratio of the upper box body to the lower box body is 3: 2; a plurality of through holes are formed in the horizontal baffle; the third aeration device 21 inside the induction reaction box is arranged on the upper surface of the horizontal baffle plate.
Preferably, the side wall of the lower box body of the induction reaction box is provided with an aeration hole 17.
Preferably, a mud-water exchange sleeve is arranged in a through hole at the bottom of the induction reaction box; one end of the mud-water exchange sleeve is inserted into the lower box body of the induction reaction box, and the other end of the mud-water exchange sleeve is inserted into the bottom mud.
Preferably, the combination mode of a plurality of combined stuffing boxes in the combined stuffing system is parallel connection or series connection; the side wall of the combined stuffing box is provided with a plurality of second through holes 27.
Preferably, the particle size of the volcanic rock is 8-10 mm, the particle size of the zeolite is 6-8 mm, and the particle size of the activated carbon is 4-6 mm.
The invention also provides an in-situ remediation method of the black and odorous water body sediment based on the device in the technical scheme, which comprises the following steps:
disposing the biocatalytic system on land; the induction reaction system and the combined filler system are arranged at the bottom of the black and odorous water body;
introducing the clean water into the first water tank 12, and carrying out aeration and oxygenation to obtain a first water body;
introducing the first water body into a second water tank 7, adding a biocatalyst into the first water body by using a biocatalyst feeding device 6 in the second water tank 7, and activating the biocatalyst to obtain a second water body;
introducing the second water body into an induction reaction box, mixing the second water body with the bottom sludge entering through a through hole in the bottom of the induction reaction box, and catalyzing the bottom sludge by using a biocatalyst in the second water body under an aeration condition to obtain repaired bottom sludge and a third water body;
introducing the third water body into the combined stuffing box from a water inlet on the side wall of the combined stuffing box, and sequentially filtering by volcanic rock, zeolite and activated carbon to obtain a clean water body; and introducing the clean water body into the first water tank 12 for cyclic restoration.
The invention provides an in-situ remediation device for black and odorous water body sediment, which comprises a biological catalysis system, an induction reaction system and a combined filler system which are sequentially communicated; the water outlet of the combined filler system is communicated with the water inlet of the biological catalysis system; when in use, the biological catalysis system is arranged on land; the induction reaction system and the combined filler system are arranged at the bottom of the black and odorous water body. According to the invention, a biological catalyst is added into the water body by using a biological catalysis system, and aeration and oxygenation are carried out on the water body, so that the activity of the biological catalyst is improved; the water body induced by aeration and biological catalyst is fully mixed with the bottom mud in the induction reaction system, and the biological catalyst in the water body degrades pollutants in the bottom mud to realize bottom mud remediation; the water body flowing out of the induction reaction box enters the combined filler system for filtering, impurities and ammonia nitrogen pollutants in the water body are removed, a clean water body is provided for the biological catalysis system, and the improvement of the catalysis efficiency of the biocatalyst is facilitated. The three systems in the device provided by the invention operate simultaneously, so that the hydrodynamic force of a target water body can be increased, the dynamic circulation in an independent water area is realized, the dissolved oxygen in water is increased, the whole water area can be comprehensively repaired, and the problems of blackness of the water body and repeated deterioration of water quality in the treatment process of the black and odorous water body are solved; the device provided by the invention can provide a suitable living environment for microorganisms, induce the native microorganisms to return, perfect the water ecosystem and realize the in-situ remediation of the bottom mud of the black and odorous water body; meanwhile, the problems of large project amount, high cost, secondary pollution and difficult subsequent treatment of the sediment in a remote treatment technology (sediment dredging) are solved.
In addition, the device provided by the invention is a split type device, and the number and the combination mode of the box bodies in each system can be adjusted according to the change of actual conditions; the device provided by the invention is simple and convenient, is convenient to transport, and is suitable for repairing the bottom mud of the water body in water areas such as culture ponds, park landscape ponds, small lake wetlands and the like.
Drawings
FIG. 1 is a schematic structural diagram of a biocatalytic tank provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an induction reaction chamber provided in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a packing box assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a mud-water exchange sleeve according to an embodiment of the present invention;
fig. 5 is a schematic view of an in-situ remediation device for black and odorous water body bottom sediment in embodiment 1 of the present invention;
fig. 6 is a schematic view of an in-situ remediation device for black and odorous water body bottom sediment according to embodiment 2 of the present invention;
wherein, 1-an oxygen increasing air pump; 2-water outlet pipeline of self-priming water pump; 3, a self-priming water pump; 4-a vortex fan; 5-water inlet pipe of self-priming pump; 6-a biocatalyst delivery device; 7-a second water tank; 8-a vortex fan exhaust duct; 9-a microporous aeration disc of the second water tank; 10-a direct current submersible pump; 11-a second tank gravity drainage pipe; 12-a first water tank; 13-water outlet of the induction reaction box; 14-a water inlet of the induction reaction box; 15-water guide round holes of the induction reaction box; 16-air inlet holes of the microporous aeration disc; 17-a gas-filled hole; 18-inner pipe of mud-water exchange sleeve; 19-a mud-water exchange sleeve outer pipe; 20-induction reaction box; 21-a microporous aeration disc of the induction reaction box; 22-detachable inner ring grating; 23-a pipe; 24-water outlet of the combined stuffing box; 25-detachable outer ring grating; 26 water inlet of combined stuffing box; 27-water guiding round hole of combined stuffing box.
Detailed Description
The invention provides an in-situ remediation device for black and odorous water body sediment, which comprises a biological catalysis system, an induction reaction system and a combined filler system which are sequentially communicated; and the water outlet of the combined filler system is communicated with the water inlet of the biological catalysis system.
The in-situ remediation device provided by the invention comprises a biological catalysis system, and is used for adding a biological catalyst into a water body, and simultaneously carrying out aeration and oxygenation on the water body to improve the activity of the biological catalyst. In the present invention, the biocatalytic system comprises a plurality of biocatalytic tanks, and when the biocatalytic system comprises a plurality of biocatalytic tanks, the combination of the plurality of biocatalytic tanks is preferably in parallel or in series. As an example of the present invention, the biocatalytic system comprises 1 biocatalytic tank, 2 biocatalytic tanks in parallel or 2 biocatalytic tanks in series. In the present invention, when the in-situ remediation device is used, the biocatalytic system is disposed on land, preferably on the bank of a target body of water.
In the present invention, the shape of the biocatalytic tank is preferably columnar, more preferably rectangular parallelepiped; the length x width x height of the rectangular parallelepiped biocatalyst is preferably 1500mm x 1200mm x 1400 mm. In the invention, the box body material of the biological catalysis box is preferably stainless steel.
In the invention, a first water tank 12 and a second water tank 7 which are communicated in sequence are arranged in the biological catalysis tank; the first water tank 12 and the second water tank 7 are preferably arranged at the bottom of the biological catalysis tank; the first water tank 12 and the second water tank 7 are independently and preferably made of glass fiber reinforced plastics; the shapes of the first water tank 12 and the second water tank 7 are independent, preferably columnar, and more preferably rectangular; the length x width x height of the rectangular parallelepiped first water tank 12 is preferably 1000mm x 600mm x 1000 mm; the length x width x height of the rectangular second water tank 7 is preferably 1000mm x 600mm x 1000 mm; the horizontal distance between the first water tank 12 and the second water tank 7 is preferably 0.1-0.2 m.
In the invention, the first water tank 12 is provided with a first aeration device for aerating and oxygenating the water in the first tank body to provide a suitable living environment for microorganisms. In the present invention, the first aeration means is preferably provided at the bottom of the first water tank 12; the first aeration device is preferably a microporous aeration disc. In the present invention, the number of the micro-porous aeration disks is preferably 4; the connection mode of the 4 microporous aeration disks is preferably two rows and two columns which are horizontally distributed in parallel; the microporous aeration disc is preferably made of Polyethylene (PE); the diameter of an air inlet pipeline of the microporous aeration disc is preferably 25mm, and the diameter of the air disc is preferably 215 mm.
As an embodiment of the invention, the aeration device in the first water tank 12 is communicated with the oxygen-increasing air pump 1 through an air outlet pipeline of the oxygen-increasing air pump, and oxygen is delivered into the aeration device by the oxygen-increasing air pump 1, so that the oxygen content in the water body is increased. In the present invention, the power of the oxygen-increasing air pump 1 is preferably 180W, and the working voltage is preferably 220V. As an embodiment of the invention, the oxygen increasing air pump 1 is arranged on the top of the inside of the biological catalysis box.
As an embodiment of the present invention, the first water tank 12 further includes a water inlet disposed at the top of the first water tank 12 for introducing clean water. In the invention, the source of the clean water body is the water body discharged by the combined stuffing box. In the present invention, it is preferable to inject the clean water into the first water tank 12 through the outlet pipe 2 of the self-priming pump 3 by using the self-priming pump. In the invention, the power of the self-priming water pump 3 is preferably 1500W, and the working voltage is preferably 220V. In the invention, the material of the self-priming pump water outlet pipeline 2 is preferably PE, and the inner pipe diameter of the self-priming pump water outlet pipeline 2 is preferably 40 mm. As an embodiment of the invention, the self-priming water pump 3 is arranged at the top of the inside of the biological catalysis tank.
As an embodiment of the present invention, the first water tank 12 further includes a direct current submersible pump 10 disposed at the bottom of the first water tank 12 for guiding the first water body in the first water tank 12 into the second water tank 7. In the present invention, the power of the dc submersible pump 10 is preferably 550W, and the operating voltage is preferably 220V.
In the invention, a second aeration device 9 is arranged in the second water tank 7 to aerate the water in the second tank body so as to provide a suitable living environment for microorganisms. In the present invention, the second aeration device 9 is preferably provided at the bottom of the second water tank 7; the second aeration device 9 is preferably a microporous aeration disk. In the present invention, the number of the micro-porous aeration disks 9 is preferably 4; the connection mode of the 4 microporous aeration disks is preferably two rows and two columns which are horizontally distributed side by side; the material of the microporous aeration disc 9 is preferably Polyethylene (PE); the diameter of an air inlet pipeline of the microporous aeration disc 9 is preferably 25mm, and the diameter of an air disc is preferably 215 mm.
As an embodiment of the invention, the second aeration device 9 is communicated with the vortex fan 4 through a vortex fan exhaust pipeline 8, and the vortex fan 4 is used for conveying air into the second aeration device 9 to increase the oxygen content in the water body. In the present invention, the power of the vortex fan 4 is preferably 1500W, and the working voltage is preferably 220V. In the present invention, the material of the exhaust duct 8 of the vortex fan is preferably PE, and the inner diameter of the exhaust duct 8 of the vortex fan is preferably 40 mm. As an embodiment of the invention, the vortex fan 4 is arranged on the top of the inside of the biological catalysis box.
In the invention, a biocatalyst putting device 6 is arranged in the second water tank 7, and the biocatalyst is added into the water body in the second tank body. In the invention, the box body of the biocatalyst feeding device 6 is preferably made of stainless steel; the biocatalyst dosing device 6 is preferably a cube, and the side length of the cube shaped biocatalyst dosing device 6 is preferably 200 mm. As an embodiment of the present invention, the feeding port of the biocatalyst feeding device is disposed at the bottom of the biocatalyst feeding device, and the biocatalyst is fed into the second water tank through the feeding port. In the present invention, the biocatalyst feeding means 6 is preferably provided at an upper portion of the second tank, and more preferably at an upper corner of the second tank.
As an embodiment of the present invention, the second water tank 7 further includes a water outlet disposed at the bottom of the second water tank 7, and is used for outputting the water in the second tank. In the invention, when the biological catalysis system comprises a plurality of biological catalysis boxes connected in parallel, the water in the second water tank 7 is introduced into the induction reaction system through the water outlet; when the biological catalysis system comprises a plurality of biological catalysis boxes connected in series, the water in the second water tank 7 in the former biological catalysis box is introduced into the first water tank 12 in the latter biological catalysis box, and so on, and the water in the second water tank 7 in the last biological catalysis box is introduced into the induction reaction system through the water outlet.
As an embodiment of the invention, the inside of the biological catalysis box is also provided with a channel for placing power equipment; the self-priming water pump 3, the oxygenation air pump 1 and the vortex fan 4 all belong to power equipment. As an embodiment of the present invention, the channel is provided at an upper corner of the biocatalytic tank; the dimensions of the channels are preferably 300mm x 1200 mm.
The in-situ remediation device provided by the invention comprises an induced reaction system communicated with the water outlet of the biocatalysis system and used for degrading pollutants in the bottom mud. In the invention, the water outlet of the biological catalysis system is the water outlet of the second water tank 7. In the invention, when the in-situ remediation device is used, the induction reaction system is arranged at the bottom of the black and odorous water body, preferably at the muddy water junction at the bottom of the water body; the bottom of the induction reaction box is preferably provided with a support for fixing the induction reaction box at the bottom of the water body. In the present invention, the induction reaction system includes a plurality of induction reaction chambers, and when the induction reaction system includes a plurality of induction reaction chambers, the combination manner of the plurality of induction reaction chambers is preferably parallel or serial. As an embodiment of the present invention, the biocatalytic system comprises 1 induction reaction tank, 2 induction reaction tanks in parallel or 2 induction reaction tanks in series.
In the present invention, the shape of the induction reaction chamber is preferably a column, more preferably a cube; the side length of the square induction reaction box is preferably 500 mm. In the present invention, the material of the housing of the induction reaction chamber is preferably stainless steel.
As an embodiment of the invention, the induction reaction box further comprises a water inlet 14 arranged at the top of the induction reaction box and used for introducing the second water body discharged by the biological catalysis system. In the present invention, the water inlet 14 is preferably a circular hole with a diameter of 40 mm. In the specific embodiment of the invention, the water outlet of the second water tank 7 in the biological catalysis system is communicated with the water inlet 14 of the induction reaction tank through a second water tank self-flowing water discharge pipeline 11. In the invention, the material of the second tank artesian drainage pipe 11 is preferably PE, and the inner pipe diameter is preferably 40 mm.
As an embodiment of the invention, the induction reaction box also comprises a horizontal baffle plate which divides the induction reaction box into an upper box body and a lower box body; the height ratio of the upper box body to the lower box body is preferably 3: 2. In a specific embodiment of the invention, the distance between the horizontal baffle plate and the bottom of the induction reaction box is preferably 200 mm; the material of the horizontal baffle is preferably stainless steel. In the invention, a plurality of through holes are preferably arranged in the horizontal baffle, the number of the through holes is preferably 16, and the arrangement mode is preferably 4 rows and 4 columns which are uniformly distributed; the through hole is preferably a round hole with the diameter of 10mm, so that the water body can conveniently pass through the through hole.
In the invention, the upper surface of the horizontal baffle is provided with a third aeration device 21 for carrying out aeration and oxygenation on the water body in the induction reaction box, thereby improving the catalytic efficiency of microorganisms. In the present invention, the third aeration device 21 is preferably a micro-porous aeration disk. In the present invention, the number of the micro-porous aeration disks 21 is preferably 2; the 2 microporous aeration discs are preferably arranged on the diagonal line of the horizontal baffle; the material of the microporous aeration disc 21 is preferably Polyethylene (PE); the diameter of an air inlet pipeline of the microporous aeration disc 21 is preferably 25mm, and the diameter of an air disc is preferably 215 mm.
As an embodiment of the invention, the third aeration device 21 in the induction reaction box is communicated with the vortex fan 4 in the biological catalysis box through a pipe to realize aeration. In the present invention, the material of the pipe is preferably PE, the inner diameter of the pipe is preferably 40mm, and the outer diameter of the pipe is preferably 50mm, as an embodiment of the present invention, the sidewall of the upper box of the induction reaction box is provided with a micro-porous aeration disc air inlet 16 for passing through the pipe. In the invention, the air inlet holes 16 of the microporous aeration disc are preferably round holes with the diameter of 32 mm.
As an embodiment of the present invention, the induction reaction tank further includes a plurality of first through holes 15 disposed on a side wall of the induction reaction tank, and the first through holes 15 are preferably disposed on a side wall of an upper tank body of the induction reaction tank, so as to facilitate water exchange between the inside and the outside of the tank body. In the present invention, the first through hole 15 is preferably a water guide circular hole with a diameter of 10mm, and the arrangement of the plurality of through holes is preferably that 3 rows and 12 columns of through holes are arranged on each side wall.
As an embodiment of the present invention, the induction reaction tank further includes a water outlet 13 disposed on a side wall of the induction reaction tank, and the water outlet 13 is more preferably disposed on a side wall of an upper tank body of the induction reaction tank, and is configured to output a third water body in the induction reaction tank. In the invention, when the induction reaction system comprises a plurality of induction reaction tanks connected in parallel, the water in the induction reaction tanks is introduced into the combined filler system through the water outlet 13; when the induction reaction system comprises a plurality of induction reaction boxes connected in series, the water in the previous induction reaction box is introduced into the next induction reaction box, and so on, and the water in the last induction reaction box is introduced into the combined filler system through the water outlet 13. In the present invention, the water outlet 13 is preferably a circular hole with a diameter of 40 mm.
As an embodiment of the invention, the side wall of the lower box body of the induction reaction box is provided with an aeration hole 17 for aerating the lower box body. The hydrodynamic force of the lower box body is increased, the exchange of the external water body and the internal water body of the induction reaction box is accelerated, and the action effect of the biocatalyst and the bottom mud is promoted. In the present invention, the aeration hole 17 is preferably provided at the opposite side of the outlet hole in the induction reaction tank as described above. In the present invention, the aeration hole 17 is preferably a circular hole with a diameter of 32 mm; the distance from the aeration hole 17 to the bottom of the induction reaction tank is preferably 100 mm.
In the invention, the bottom of the induction reaction box is provided with a plurality of through holes, the through holes are preferably round holes with the diameter of 30mm, and the distance between two adjacent through holes is preferably 20 mm. As an embodiment of the invention, a mud-water exchange sleeve is arranged in the through hole, as shown in FIG. 4, one end of the mud-water exchange sleeve is inserted into the lower box body of the induction reaction box, and the other end of the mud-water exchange sleeve is inserted into the bottom mud. As an embodiment of the invention, the total length of the mud-water exchange sleeve is preferably 300mm, and the ratio of the length of the mud-water exchange sleeve inside the induction reaction tank to the length of the tank body outside is preferably 1: 2. By adopting the arrangement, the contact space of the bottom mud and the water body can be enlarged, and the degradation of the bottom mud by the biocatalyst agent is promoted. In the present invention, the mud-water exchange sleeve preferably comprises an inner pipe 18 and an outer pipe 19, the outer diameter of the outer pipe 19 is preferably 30mm, and the inner diameter of the outer pipe 19 is preferably 12 mm; the inner diameter of the inner pipe 18 is preferably 20mm, and the outer diameter of the inner pipe 18 is preferably 8 mm; the inner tube 18 and the outer tube 19 are independently made of PE; the inner tube 18 and the outer tube 19 are preferably both floral tubes; the porosity of the outer tube is preferably greater than the porosity of the inner tube. The invention adopts the mud-water exchange sleeve to prevent the blockage in the pipe and ensure that water flow smoothly passes through the pipe.
The in-situ remediation device comprises a combined filler system communicated with the water outlet 13 of the induction reaction system, and is used for filtering impurities and ammonia nitrogen pollutants in a water body, providing a clean water body for a biological catalysis system, and improving the catalysis efficiency of a biological catalyst. In the present invention, the packing system comprises a plurality of packing boxes; when the packing system includes a plurality of packing boxes, the packing boxes are preferably arranged in parallel or in series. In the invention, when the in-situ remediation device is used, the combined filler system is arranged at the bottom of the black and odorous water body; the linear distance between the combined packing system and the induction reaction system is preferably 15-30 m; the bottom of the combined stuffing box is preferably provided with a bracket for fixing the combined stuffing box at the bottom of the water body.
In the present invention, the shape of the packing box is preferably cylindrical, and more preferably cubic; the side length of the square combined stuffing box is preferably 500 mm. In the invention, the box body material of the combined stuffing box is preferably stainless steel.
In the invention, the side wall of the combined stuffing box is provided with a plurality of second through holes 27, so that water outside the box body can enter the inside of the combined stuffing box. In the present invention, the second through hole 27 is preferably a water guiding circular hole with a diameter of 10mm, and the arrangement of the plurality of through holes is preferably that 3 rows and 12 columns of through holes are arranged on each side wall.
In the invention, two rings of detachable grids are arranged in the combined stuffing box at intervals along the vertical direction: a detachable outer ring grating 25 and a detachable inner ring grating 22; the cavity of the combined stuffing box is divided into three coaxial box bodies, namely an inner layer box body, a middle layer box body and an outer layer box body from inside to outside in sequence. In the present invention, the linear distance between the detachable outer ring grating 25 and the side wall of the combined stuffing box is preferably equal to the linear distance between the detachable outer ring grating 25 and the detachable inner ring grating 22 on the same horizontal plane. In the present invention, the detachable outer ring grid 25 and the detachable inner ring grid 22 are preferably provided with uniformly distributed fine holes, and the pore diameter of the fine holes is smaller than the particle size of the filler. In the invention, the filler filled in the outer layer box body is volcanic rock, the filler filled in the middle layer box body is zeolite, and the filler filled in the inner layer box body is activated carbon. The filling amount of the filling material of each layer of the box body in the combined filling box is not particularly limited, and the filling material of each layer of the box body is preferably filled. In the invention, the particle size of the volcanic rock is preferably 8-10 mm, the particle size of the zeolite is preferably 6-8 mm, and the particle size of the activated carbon is preferably 4-6 mm. In the invention, the volcanic rock mainly filters impurities in the water body, and the zeolite and the activated carbon mainly adsorb ammonia nitrogen pollutants in the water body.
In the invention, a water inlet 26 is arranged on the side wall of the combined stuffing box; the water outlet 24 is arranged at the top or the bottom of the inner layer box body in the combined stuffing box, and by adopting the arrangement, the water body entering the combined stuffing box can be filtered and adsorbed by volcanic rock, zeolite and active carbon in sequence, so that suspended matters in the water body are reduced, and clean water body is provided for a biological catalysis system. In the present invention, the water inlet 26 is preferably a circular hole having a diameter of 40 mm.
In the present invention, the water outlet 24 is preferably a round hole with a diameter of 40mm, and is used for outputting the filtered clean water. In the invention, when the combined packing system comprises a plurality of combined packing boxes connected in parallel, a water outlet 24 of each combined packing box is preferably connected with a self-priming water pump 3 in a biological catalysis box through a pipe 23, and a water body filtered by the combined packing boxes is conveyed into the biological catalysis box; when the combined packing system comprises a plurality of combined packing boxes connected in series, the water body in the former combined packing box is introduced into the latter combined packing box, and so on, and the water body filtered by the last combined packing box is introduced into the biological catalysis box through the water outlet 24 and the pipe 23. In the invention, one end of the pipe 23 preferably penetrates into the inner box body of the combined stuffing box through the water outlet 24, the depth of the pipe 23 inserted into the inner box body is preferably 300mm, and the outer diameter of the pipe 23 is preferably 40 mm; the material of the pipe 23 is preferably PE; no filler activated carbon is present inside the tube 23.
As an embodiment of the present invention, a schematic structural diagram of the biocatalysis tank is shown in fig. 1, the biocatalysis tank is a rectangular box, a lower channel is arranged at the top of the biocatalysis tank, and a self-priming water pump 3, an oxygenation air pump 1 and a vortex fan 4 are arranged in the lower channel; a first water tank 12 and a second water tank 7 are arranged at the bottom of the biological catalysis tank side by side, and four microporous aeration discs are independently arranged at the bottoms of the first water tank 12 and the second water tank 7; a water inlet is formed in the top of the first water tank 12, and water sucked by the self-priming water pump 3 is introduced into the first water tank 12 from the water inlet; the microporous aeration disc 9 in the first water tank 12 is communicated with the oxygen-increasing air pump 1; the bottom of the first water tank 12 is also provided with a direct-current submersible pump 10 which is used for conveying the water in the first water tank 12 to the second water tank 7; a microporous aeration disc in the second water tank 7 is communicated with the vortex fan 4; a biocatalyst throwing device 6 is arranged at one upper vertex angle of the second water tank 7 and is used for throwing the biocatalyst into the water body; and a water outlet is formed in the bottom of the second water tank 7 and used for outputting a water body which is aerated and added with a biocatalyst.
As an embodiment of the present invention, a schematic structural diagram of the induction reaction tank provided by the present invention is shown in fig. 2, the induction reaction tank is a cubic tank, a water inlet 14 is arranged at the center of the top of the induction reaction tank, and is communicated with a water outlet of the second tank through a second water tank gravity flow drainage pipe 11, and is introduced into a water body which is discharged from the biological catalysis tank and is added with a biological catalyst; a horizontal baffle is arranged inside the induction reaction box to divide the induction reaction box into an upper box body and a lower box body; two microporous aeration discs 21 are arranged on the upper surface of the horizontal baffle plate, and the microporous aeration discs 21 are communicated with a vortex fan 4 of the biological catalysis box through microporous aeration disc air inlet holes 16 arranged on the side wall of the upper box body; the side wall of the upper box body is provided with 3 rows and 12 columns of air guide round holes 15 for water body exchange inside and outside the box body; an inflation hole 17 is formed in the side wall of the lower box body and used for inflating the lower water body; a water outlet is arranged on the side wall of the upper box body opposite to the air charging hole 17 to output water; the bottom of the induction reaction box is provided with a mud-water exchange sleeve, so that the contact space between the bottom mud and the water body is improved, and the catalytic effect of the biocatalyst on the water body is improved.
As an embodiment of the present invention, a schematic structural diagram of a combined stuffing box provided by the present invention is shown in fig. 3, the combined stuffing box is a cubic box, a water inlet 26 is arranged on a side wall of the combined stuffing box, and is communicated with a water outlet 13 of the induction reaction box through a pipe, and water discharged by the induction reaction box is introduced; the side wall of the combined stuffing box is also provided with 3 rows and 12 columns of air guide round holes 27, which is more beneficial for the water body in the river channel to enter the combined stuffing box; the cavity of the combined stuffing box is provided with a detachable outer ring grid 25 and a detachable inner ring grid 22 at intervals along the vertical direction, the cavity of the combined stuffing box is divided into three coaxial boxes, namely an inner box, a middle box and an outer box from inside to outside; volcanic rocks with the particle size of 8-10 mm are filled in the outer layer box body; zeolite with the particle size of 6-8 mm is filled in the middle layer box body; the inner layer box body is filled with 4-6 mm of active carbon; the top of the inner layer box body is provided with a water outlet 24, one end of a pipe 23 is inserted into the inner layer box body through the water outlet 24, the other end of the pipe 23 is connected with a self-priming water pump 3 of the biological catalysis box, and water filtered by the combined stuffing box is conveyed into the biological catalysis box.
The invention also provides an in-situ remediation method for the black and odorous water body sediment based on the device, which comprises the following steps:
disposing the biocatalytic system on land; the induction reaction system and the combined filler system are arranged at the bottom of the black and odorous water body;
introducing the clean water into the first water tank 12, and carrying out aeration and oxygenation to obtain a first water body;
introducing the first water body into a second water tank 7, adding a biocatalyst into the first water body by using a biocatalyst feeding device 6 in the second water tank 7, and activating the biocatalyst to obtain a second water body;
introducing the second water body into an induction reaction box, mixing the second water body with the bottom sludge entering through a through hole in the bottom of the induction reaction box, and catalyzing the bottom sludge by using a biocatalyst in the second water body under an aeration condition to obtain repaired bottom sludge and a third water body;
introducing the third water body into the combined stuffing box from a water inlet on the side wall of the combined stuffing box, and sequentially filtering by volcanic rock, zeolite and activated carbon to obtain a clean water body; and introducing the clean water body into the first water tank 12 for cyclic restoration.
According to the invention, clean water is introduced into the first water tank 12 for aeration and oxygenation to obtain a first water body. In the invention, the feeding speed of the clean water body is preferably 0.5-0.8 m/s. In the present invention, the oxygen content of the first water body is preferably 6 mg/L.
After the first water body is obtained, the first water body is introduced into the second water tank 7, so that the water treatment device is beneficial toAdding a biocatalyst into the first water body by using a biocatalyst feeding device 6 in a second water tank 7, and activating the biocatalyst to obtain a second water body. In the present invention, the feeding rate of the first water body into the second water tank 7 is preferably 1.0m3And L. In the present invention, the activation is preferably performed under aeration conditions. The source of the biocatalyst is not particularly limited in the present invention, and any biocatalyst known to those skilled in the art may be used. In the invention, the biological catalyst is essentially a biological protease which is a mixed preparation of a redox enzyme and a transfer enzyme and can promote the oxidation-reduction reaction of the substrate sludge and catalyze the material conversion in the substrate sludge. In the invention, the dosage of the biocatalyst is preferably 200-500 ppm.
After the second water body is obtained, the second water body is introduced into the induction reaction box and mixed with the bottom sludge entering through the through hole at the bottom of the induction reaction box, and the biological catalyst in the second water body catalyzes the bottom sludge under the aeration condition to obtain the repaired bottom sludge and the third water body. In the invention, the feeding speed of the second water body into the induction reaction box is preferably 1.5-2.0 m3/h。
After a third water body is obtained, introducing the third water body into the combined filler box from a water inlet on the side wall of the combined filler box, and sequentially filtering by volcanic rock, zeolite and activated carbon to obtain a clean water body; and introducing the clean water body into the first water tank 12 for cyclic restoration. As a specific embodiment of the present invention, the third water body is discharged from the water outlet 13, and is introduced into the combined stuffing box through the water inlet 26 on the side wall of the combined stuffing box, and is sequentially filtered by volcanic, zeolite and activated carbon, and is discharged from the water outlet 24 as a clean water body; and introducing the clean water body into the first water tank 12 from the water inlet of the first water tank for cyclic restoration.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the 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.
Example 1
The schematic diagram of the in-situ remediation device for black and odorous water bottom mud provided by this embodiment is shown in fig. 5, where the biocatalysis tank is placed on the bank, and the induction reaction tank and the combined stuffing box are placed at the bottom of the river water body; the water outlet of the biological catalysis box is communicated with the water inlet of the induction reaction box; the water outlet of the induction reaction box is communicated with the water inlet of the combined stuffing box; and the water outlet of the combined stuffing box is communicated with the water inlet of the biological catalysis box.
Example 2
The schematic diagram of the in-situ remediation device for black and odorous water bottom mud provided by this embodiment is as shown in fig. 6, the biocatalysis tank is placed on the bank, and the two induction reaction tanks and the two combined stuffing tanks are alternately placed at the bottom of the river water body; the water outlet of the biological catalysis box is communicated with the water inlet of the first induction reaction box;
the first water outlet of the first induction reaction box is communicated with the water inlet of the second induction reaction box, and the water outlet of the second induction reaction box is communicated with the first water inlet of the second combined packing box;
the second water outlet of the first induced reaction box is communicated with the water inlet of the first combined stuffing box, and the water outlet of the first combined stuffing box is communicated with the second water inlet of the second combined stuffing box;
the water outlet of the second combined stuffing box is communicated with the water inlet of the biological catalysis box;
wherein, still be provided with a water pipe between an induction reaction case and the combination stuffing box, still be provided with a water pipe between No. two induction reaction cases and the combination stuffing box of No. two, can increase the water exchange between induction reaction case and the combination stuffing box.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. An in-situ remediation device for black and odorous water body sediment is characterized by comprising a biological catalysis system, an induction reaction system and a combined filler system which are sequentially communicated; the water outlet of the combined filler system is communicated with the water inlet of the biological catalysis system;
when in use, the biological catalysis system is arranged on land; the induction reaction system and the combined filler system are arranged at the bottom of the black and odorous water body;
the biological catalysis system comprises a plurality of biological catalysis boxes; a first water tank (12) and a second water tank (7) which are communicated in sequence are arranged in each biological catalysis tank; a first aeration device is arranged in the first water tank (12); a biocatalyst feeding device (6) and a second aeration device (9) are arranged in the second water tank (7);
the induction reaction system comprises a plurality of induction reaction boxes; a third aeration device (21) is arranged in each induction reaction box; the bottom of each induction reaction box is provided with a plurality of through holes;
the combined packing system comprises a plurality of combined packing boxes; the cavity of each combined stuffing box is provided with two rings of detachable grids at intervals along the vertical direction, the cavity of each combined stuffing box is divided into three coaxial boxes, namely an inner box, a middle box and an outer box from inside to outside; volcanic rock is filled in the outer layer box body, zeolite is filled in the middle layer box body, and activated carbon is filled in the inner layer box body;
a water inlet (26) is arranged on the side wall of the combined stuffing box; and a water outlet (24) is formed in the top or the bottom of the inner layer box body in the combined stuffing box.
2. The in situ repair apparatus of claim 1, wherein when the biocatalytic system comprises a plurality of biocatalytic tanks, the plurality of biocatalytic tanks are combined in parallel or in series;
a channel for placing power equipment is also arranged in each biological catalysis box; the power equipment comprises a self-priming water pump (3), an oxygenation air pump (1) and a vortex fan (4).
3. The in situ remediation device of claim 2, wherein the first aeration device in the first water tank (12) is in communication with the oxygen aeration pump (1);
a second aeration device (9) in the second water tank (7) is communicated with the vortex fan (4);
and a third aeration device (21) in the induction reaction box is communicated with the vortex fan (4).
4. The in-situ remediation device of claim 1 wherein the combination of the plurality of induction reaction chambers in the induction reaction system is in parallel or in series; the side wall of the induction reaction box is provided with a plurality of first through holes (15).
5. The in-situ repair device according to claim 1 or 4, wherein a horizontal baffle is arranged in the induction reaction box to divide the induction reaction box into an upper box body and a lower box body; the height ratio of the upper box body to the lower box body is 3: 2; a plurality of through holes are formed in the horizontal baffle; and a third aeration device (21) inside the induction reaction box is arranged on the upper surface of the horizontal baffle plate.
6. The in situ repair device according to claim 5, wherein the lower box side wall of the induction reaction box is provided with an air filling hole (17).
7. The in-situ repair device according to claim 1 or 5, wherein a mud-water exchange sleeve is arranged in the through hole at the bottom of the induction reaction tank; one end of the mud-water exchange sleeve is inserted into the lower box body of the induction reaction box, and the other end of the mud-water exchange sleeve is inserted into the bottom mud.
8. The in situ remediation device of claim 1 wherein a plurality of said packing boxes in said packing system are arranged in parallel or in series; the side wall of the combined stuffing box is provided with a plurality of second through holes (27).
9. The in-situ remediation device of claim 1 or 8 wherein the volcanic rock has a particle size of 8-10 mm, the zeolite has a particle size of 6-8 mm, and the activated carbon has a particle size of 4-6 mm.
10. An in-situ remediation method for black and odorous water body sediment based on the device of any one of claims 1 to 9, comprising the following steps:
disposing the biocatalytic system on land; the induction reaction system and the combined filler system are arranged at the bottom of the black and odorous water body;
introducing the clean water body into the first water tank (12), and carrying out aeration and oxygenation to obtain a first water body;
introducing the first water body into a second water tank (7), adding a biocatalyst into the first water body by using a biocatalyst feeding device (6) in the second water tank (7), and activating the biocatalyst to obtain a second water body;
introducing the second water body into an induction reaction box, mixing the second water body with the bottom sludge entering through a through hole in the bottom of the induction reaction box, and catalyzing the bottom sludge by using a biocatalyst in the second water body under an aeration condition to obtain repaired bottom sludge and a third water body;
introducing the third water body into the combined stuffing box from a water inlet on the side wall of the combined stuffing box, and sequentially filtering by volcanic rock, zeolite and activated carbon to obtain a clean water body; and introducing the clean water body into the first water tank (12) for cyclic restoration.
CN201911393137.7A 2019-12-30 2019-12-30 In-situ restoration device and in-situ restoration method for black and odorous water body substrate sludge Active CN110963657B (en)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
CN102531201A (en) * 2012-02-06 2012-07-04 宁波天韵生态治理工程有限公司 Method and device for utilizing microorganism in-situ circulation cultivation to treat water body pollution
CN106348548A (en) * 2016-11-14 2017-01-25 天津市环境保护科学研究院 Black and odorous water/eutrophicated water treatment method and device, and application thereof
CN206538269U (en) * 2017-01-26 2017-10-03 广东中微环保生物科技有限公司 A kind of black smelly water-bed mud synchronization prosthetic device
CN211688752U (en) * 2019-12-30 2020-10-16 河北九华勘查测绘有限责任公司 In-situ repair device for black and odorous water body sediment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102531201A (en) * 2012-02-06 2012-07-04 宁波天韵生态治理工程有限公司 Method and device for utilizing microorganism in-situ circulation cultivation to treat water body pollution
CN106348548A (en) * 2016-11-14 2017-01-25 天津市环境保护科学研究院 Black and odorous water/eutrophicated water treatment method and device, and application thereof
CN206538269U (en) * 2017-01-26 2017-10-03 广东中微环保生物科技有限公司 A kind of black smelly water-bed mud synchronization prosthetic device
CN211688752U (en) * 2019-12-30 2020-10-16 河北九华勘查测绘有限责任公司 In-situ repair device for black and odorous water body sediment

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