Integrated equipment for in-situ remediation of black and odorous water body sediment

Abstract

The application discloses a black and odorous water body sediment in-situ remediation integrated device and relates to the technical field of water body remediation. The device comprises a biological catalysis system, an induction reaction system and a combined filler system which are sequentially connected. The water outlet of the combined filler system is connected 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 application operate simultaneously, the water power of the target water body can be increased, the dynamic circulation in the independent water area can be realized, the dissolved oxygen in the water can be increased, the overall water area can be comprehensively remediated, and the problems of water blackening and water quality repeatedly deteriorating in the process of treating the black and odorous water body can be solved.

Description

[0001] The application is a divisional application, the original application number is 201911393137.7, the application date is December 30, 2019, and the invention name is 'a black and odorous water body sediment in-situ remediation device and in-situ remediation method'. TECHNICAL FIELD

[0002] The application relates to the technical field of water body remediation, in particular to a black and odorous water body sediment in-situ remediation integrated device. BACKGROUND

[0003] At present, the mainstream methods for treating the sediment in the black and odorous river channel are as follows: (1) sediment dredging technology: the contaminated river channel is mechanically dredged, the sediment is dug out from the river bottom by using mechanical equipment, and is transferred to other places for ex-situ harmless treatment; (2) in-situ covering technology: a layer or multiple layers of clean coverings are laid on the surface of the contaminated sediment, so that the contaminated sediment is isolated from the upper water body, thereby preventing the migration of pollutants in the sediment to the water body. The two methods have the common advantages of quick effect, but also face the problems of high construction cost, damage to the original ecological system in the water body, easy secondary pollution and the like.

[0004] Chinese patent CN206502728U discloses an in-situ treatment device for black and odorous water body sediment, which comprises a sealing cover and an aeration device for aerating and disturbing the sediment in the sealing cover. The device can effectively treat the pollutants in the black and odorous water body and sediment, but can only treat a certain point for local in-situ remediation, cannot comprehensively remediate the entire water area, the water quality is easy to deteriorate repeatedly, and the remediation effect is difficult to maintain for a long time. SUMMARY

[0005] The application aims to provide a black and odorous water body sediment in-situ remediation integrated device. The device can comprehensively remediate the entire water area, and solves the problems of water body blackening and water quality deterioration in the process of treating the black and odorous water body.

[0006] In order to achieve the above application purposes, the application provides the following technical solutions:

[0007] The black and odorous water body sediment in-situ remediation integrated device comprises a biological catalysis system, an induction reaction system and a combined filler system which are sequentially connected; the water outlet of the combined filler system is connected with the water inlet of the biological catalysis system;

[0008] 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 induction reaction system is arranged at the mud-water junction at the bottom of the black and odorous water body;

[0009] The biological catalysis system comprises a plurality of biological catalysis boxes; each of the biological catalysis boxes is internally provided with a first water tank and a second water tank which are sequentially communicated; the first water tank is provided with a first aeration device; the second water tank is provided with a biological catalyst feeding device and a second aeration device; the inside of each of the biological catalysis boxes is further provided with a channel for placing a power equipment; the power equipment comprises a self-suction water pump, an oxygenation pump and a vortex fan;

[0010] The induced reaction system comprises a plurality of induced reaction boxes; each of the induced reaction boxes is provided with a third aeration device; the bottom of each of the induced reaction boxes is provided with a plurality of through holes;

[0011] The combined filler system comprises a plurality of combined filler boxes; the cavity of each of the combined filler boxes is vertically spaced apart and provided with two detachable circles of grilles, so as to divide the cavity of the combined filler box into three coaxial box bodies from inside to outside, namely an inner layer box body, a middle layer box body and an outer layer box body; the outer layer box body is filled with volcanic rocks, the middle layer box body is filled with zeolites, and the inner layer box body is filled with activated carbon;

[0012] The through holes in the bottom of the induced reaction box are provided with a sludge-water exchange sleeve; one end of the sludge-water exchange sleeve is inserted into the lower box body of the induced reaction box, and the other end is inserted into the bottom mud; the sidewall of the induced reaction box is provided with a plurality of first through holes;

[0013] The sludge-water exchange sleeve comprises an inner tube and an outer tube; the inner tube and the outer tube are both flower tubes; the porosity of the outer tube is greater than that of the inner tube.

[0014] Preferably, when the biological catalysis system comprises a plurality of biological catalysis boxes, the combination mode of the plurality of biological catalysis boxes is parallel or series.

[0015] Preferably, the first aeration device in the first water tank is communicated with the oxygenation pump;

[0016] The second aeration device in the second water tank is communicated with the vortex fan;

[0017] The third aeration device in the induced reaction box is communicated with the vortex fan.

[0018] Preferably, the combination mode of the plurality of induced reaction boxes in the induced reaction system is parallel or series.

[0019] Preferably, the induced reaction box is provided with a horizontal baffle, so as to divide the induced 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; the horizontal baffle is provided with a plurality of through holes; the third aeration device inside the induced reaction box is arranged on the upper surface of the horizontal baffle.

[0020] Preferably, an air filling hole is provided on the lower side wall of the induction reaction chamber.

[0021] Preferably, the combination of several combined packing boxes in the combined packing system is in parallel or in series; several second through holes are provided on the side wall of the combined packing box.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention utilizes a biocatalytic system to add a biocatalyst to the water body while simultaneously aerating and oxygenating the water to enhance the activity of the biocatalyst. The aerated and oxygenated water, induced by the biocatalyst, is thoroughly mixed with bottom sediment in the induced reaction system. The biocatalyst in the water degrades pollutants in the bottom sediment, achieving sediment remediation. The water flowing out of the induced reaction tank enters a combined packing system for filtration, removing impurities and ammonia nitrogen pollutants, providing clean water for the biocatalytic system and improving the catalytic efficiency of the biocatalyst. The device provided by this invention operates three systems simultaneously, increasing the hydrodynamics of the target water body, achieving dynamic circulation within an independent water area, increasing dissolved oxygen, and enabling comprehensive remediation of the entire water body. This solves the problems of water re-blackening and repeated water quality deterioration during the treatment of black and odorous water bodies. The device provided by this invention provides a suitable living environment for microorganisms, inducing the return of indigenous microorganisms, improving the aquatic ecosystem, and achieving in-situ remediation of bottom sediment in black and odorous water bodies. Simultaneously, it also solves the problems of large engineering volume, high cost, secondary pollution, and difficulties in subsequent sediment treatment associated with off-site treatment technologies (sediment dredging).

[0024] In addition, the device provided by the present invention is a split device, which can adjust the number and combination of boxes in each system according to changes in actual conditions; the device provided by the present invention is simple, convenient to transport, and suitable for the remediation of bottom sediment in aquatic bodies such as aquaculture ponds, park landscape ponds, and small lakes and wetlands. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the biocatalytic box provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the induction reaction chamber provided in an embodiment of the present invention;

[0028] Figure 3 Structure diagram of the combined filler box provided by the embodiment of the present application is shown in the figure;

[0029] Figure 4 Structure diagram of the sludge exchange sleeve in the embodiment of the present application is shown in the figure;

[0030] Figure 5 The schematic diagram of the integrated equipment for in-situ remediation of black and odorous water body sediment in the embodiment 1 of the present application is shown in the figure;

[0031] Figure 6 The schematic diagram of the integrated equipment for in-situ remediation of black and odorous water body sediment in the embodiment 2 of the present application is shown in the figure;

[0032] In the figure, 1 is an oxygenation pump; 2 is a self-priming water pump outlet pipeline; 3 is a self-priming water pump; 4 is a vortex fan; 5 is a self-priming water pump inlet pipeline; 6 is a biological catalyst feeding device; 7 is a second water tank; 8 is a vortex fan exhaust pipeline; 9 is a second aeration device; 10 is a straight-flow submersible pump; 11 is a second water tank self-flow drainage pipeline; 12 is a first water tank; 13 is a water outlet of the induction reaction box; 14 is a water inlet of the induction reaction box; 15 is a first through hole; 16 is a micro-porous aeration disc air inlet hole; 17 is an air inlet hole; 18 is an inner tube; 19 is an outer tube; 20 is an induction reaction box; 21 is a detachable inner ring grid; 23 is a pipe material; 24 is a water outlet of the combined filler box; 25 is a detachable outer ring grid; 26 is a water inlet of the combined filler box; 27 is a second through hole. DETAILED DESCRIPTION

[0033] The present application provides an integrated equipment for in-situ remediation of black and odorous water body sediment, which comprises a biological catalysis system, an induction reaction system and a combined filler system which are sequentially connected; the water outlet of the combined filler system is connected with the water inlet of the biological catalysis system.

[0034] The integrated equipment for in-situ remediation of black and odorous water body sediment provided by the present application comprises a biological catalysis system, which is used for adding biological catalysts to the water body and aerating the water body to improve the activity of the biological catalysts. In the present application, the biological catalysis system comprises a plurality of biological catalysis boxes, and when the biological catalysis system comprises a plurality of biological catalysis boxes, the combination mode of the plurality of biological catalysis boxes is preferably parallel or series. As an embodiment of the present application, the biological catalysis system comprises 1 biological catalysis box, 2 parallel biological catalysis boxes or 2 series biological catalysis boxes. In the present application, when the integrated equipment for in-situ remediation of black and odorous water body sediment is used, the biological catalysis system is arranged on land, preferably on the shore of the target water body.

[0035] In the present application, the shape of the biological catalytic tank is preferably columnar, more preferably cuboid; the length x width x height of the cuboid-shaped biological catalyst is preferably 1500 mm x 1200 mm x 1400 mm. In the present application, the tank body material of the biological catalytic tank is preferably stainless steel.

[0036] In the present application, the inside of the biological catalytic tank is provided with a first water tank 12 and a second water tank 7 which are sequentially communicated; the first water tank 12 and the second water tank 7 are preferably arranged at the bottom of the biological catalytic tank; the materials of the first water tank 12 and the second water tank 7 are independently preferably glass steel; the shapes of the first water tank 12 and the second water tank 7 are independently preferably columnar, more preferably cuboid; the length x width x height of the cuboid-shaped first water tank 12 is preferably 1000 mm x 600 mm x 1000 mm; the length x width x height of the cuboid-shaped second water tank 7 is preferably 1000 mm x 600 mm x 1000 mm; the horizontal distance of the first water tank 12 and the second water tank 7 is preferably 0.1-0.2 m.

[0037] In the present application, 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 application, the first aeration device is preferably arranged at the bottom of the first water tank 12; the first aeration device is preferably a microporous aeration disc. In the present application, the number of microporous aeration discs is preferably 4; the connection mode of the 4 microporous aeration discs is preferably two rows and two columns, horizontally distributed side by side; the material of the microporous aeration disc is preferably polyethylene (PE); the diameter of the air inlet pipeline of the microporous aeration disc is preferably 25 mm, and the diameter of the air disc is preferably 215 mm.

[0038] As an embodiment of the present application, the first aeration device in the first water tank 12 is communicated with an oxygenation air pump 1 through an oxygenation air pump exhaust pipeline, and oxygen is supplied to the first aeration device by the oxygenation air pump 1 to increase the oxygen content in the water body.

[0039] In the present application, the power of the oxygenation air pump 1 is preferably 180 W, and the working voltage is preferably 220 V. As an embodiment of the present application, the oxygenation air pump 1 is arranged at the top inside the biological catalytic tank.

[0040] As an embodiment of the present application, the first water tank 12 further comprises a water inlet arranged at the top of the first water tank 12 for introducing clean water. In the present application, the source of the clean water is the water discharged from the combined filler tank.

[0041] In the present application, the clean water is injected into the first water tank 12 through the self-priming water pump outlet pipeline 2 by using the self-priming water pump 3. In the present application, the power of the self-priming water pump 3 is preferably 1500W, and the working voltage is preferably 220V. In the present application, the material of the self-priming water pump outlet pipeline 2 is preferably PE, and the inner tube diameter of the self-priming water pump outlet pipeline 2 is preferably 40mm. As an embodiment of the present application, the self-priming water pump 3 is arranged at the top inside the biological catalytic tank.

[0042] As an embodiment of the present application, the first water tank 12 further comprises a straight-flow submersible pump 10 arranged at the bottom of the first water tank 12, which is used to guide the first water in the first water tank 12 into the second water tank 7. In the present application, the power of the straight-flow submersible pump 10 is preferably 550W, and the working voltage is preferably 220V.

[0043] In the present application, the second water tank 7 is provided with a second aeration device 9 to aerate and oxygenate the water in the second tank, thereby providing a suitable living environment for microorganisms. In the present application, the second aeration device 9 is preferably arranged at the bottom of the second water tank 7; the second aeration device 9 is preferably a micro-porous aeration disc. In the present application, the number of the micro-porous aeration discs is preferably 4; the connection mode of the 4 micro-porous aeration discs is preferably two rows and two columns, horizontally distributed side by side; the material of the micro-porous aeration disc is preferably polyethylene (PE); the air inlet pipeline diameter of the micro-porous aeration disc is preferably 25mm, and the air disc diameter is preferably 215mm.

[0044] As an embodiment of the present application, the second aeration device 9 is connected to the vortex air blower 4 through the vortex air blower exhaust pipeline 8, and air is supplied to the second aeration device 9 by using the vortex air blower 4 to increase the oxygen content in the water. In the present application, the power of the vortex air blower 4 is preferably 1500W, and the working voltage is preferably 220V. In the present application, the material of the vortex air blower exhaust pipeline 8 is preferably PE, and the inner tube diameter of the vortex air blower exhaust pipeline 8 is preferably 40mm. As an embodiment of the present application, the vortex air blower 4 is arranged at the top inside the biological catalytic tank.

[0045] In the present application, the second water tank 7 is provided with a biological catalyst feeding device 6, and biological catalysts are added to the water in the second water tank 7. In the present application, the material of the box body of the biological catalyst feeding device 6 is preferably stainless steel; the biological catalyst feeding device 6 is preferably a cube, and the edge length of the cube-shaped biological catalyst feeding device 6 is preferably 200 mm. As an embodiment of the present application, the feeding port of the biological catalyst feeding device 6 is arranged at the bottom of the biological catalyst feeding device 6, and biological catalysts are added to the second water tank 7 through the feeding port of the biological catalyst feeding device 6. In the present application, the biological catalyst feeding device 6 is preferably arranged at the upper part of the second water tank 7, and more preferably at one of the upper corners of the second water tank 7.

[0046] As an embodiment of the present application, the second water tank 7 further comprises a water outlet arranged at the bottom of the second water tank 7, for outputting the water in the second water tank. In the present application, when the biological catalyst system comprises a plurality of parallel biological catalyst tanks, the water in the second water tank 7 is introduced into the induction reaction system through the water outlet of the second water tank 7; when the biological catalyst system comprises a plurality of serial biological catalyst tanks, the water in the second water tank 7 in the previous biological catalyst tank is introduced into the first water tank 12 in the next biological catalyst tank, and so on, and the water in the second water tank 7 in the last biological catalyst tank is introduced into the induction reaction system through the water outlet of the second water tank 7.

[0047] As an embodiment of the present application, the inside of the biological catalyst tank is further provided with a channel for placing power equipment; the self-suction water pump 3, the oxygen-increasing pump 1 and the vortex fan 4 mentioned above all belong to power equipment. As an embodiment of the present application, the channel is arranged at one of the upper corners of the biological catalyst tank; the size of the channel is preferably 300 mm x 300 mm x 1200 mm.

[0048] The integrated equipment for in-situ remediation of black and odorous water body sediment provided by the present application comprises an induction reaction system connected to the water outlet of the biological catalyst system, for degrading pollutants in the sediment. In the present application, the water outlet of the biological catalyst system is the water outlet of the second water tank 7. In the present application, when the integrated equipment for in-situ remediation of black and odorous water body sediment is used, the induction reaction system is arranged at the bottom of the black and odorous water body, preferably at the interface between the sediment and water at the bottom of the water body; the bottom of the induction reaction tank is preferably provided with a support for fixing the induction reaction tank at the bottom of the water body. In the present application, the induction reaction system comprises a plurality of induction reaction tanks, and when the induction reaction system comprises a plurality of induction reaction tanks, the combination mode of the plurality of induction reaction tanks is preferably parallel or serial. As an embodiment of the present application, the biological catalyst system comprises 1 induction reaction tank, 2 parallel induction reaction tanks or 2 serial induction reaction tanks.

[0049] In the present application, the shape of the induction reaction box is preferably cylindrical, more preferably cubic; the edge length of the cubic induction reaction box is preferably 500 mm. In the present application, the material of the box body of the induction reaction box is preferably stainless steel.

[0050] As an embodiment of the present application, the induction reaction box further comprises a water inlet 14 arranged at the top of the induction reaction box for introducing the second water body discharged by the biological catalysis system. In the present application, the water inlet 14 of the induction reaction box is preferably a circular hole with a diameter of 40 mm. In a specific embodiment of the present application, the water outlet of the second water tank 7 in the biological catalysis system is connected to the water inlet 14 of the induction reaction box through a second water tank gravity drainage pipeline 11. In the present application, the material of the second water tank gravity drainage pipeline 11 is preferably PE, and the inner pipe diameter is preferably 40 mm.

[0051] As an embodiment of the present application, the induction reaction box further comprises a horizontal baffle, 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 present application, the distance between the horizontal baffle and the bottom of the induction reaction box is preferably 200 mm; the material of the horizontal baffle is preferably stainless steel. In the present application, a plurality of through holes are preferably arranged in the horizontal baffle; the number of the through holes is preferably 16, which are evenly distributed in 4 rows and 4 columns; the through holes are preferably circular holes with a diameter of 10 mm, which facilitate the passage of water.

[0052] In the present application, the upper surface of the horizontal baffle is provided with a third aeration device 21 for aerating and oxygenating the water in the induction reaction box, thereby improving the catalytic efficiency of microorganisms. In the present application, the third aeration device 21 is preferably a microporous aeration disc. In the present application, the number of the microporous aeration discs is preferably 2; the two microporous aeration discs are preferably placed on the diagonal line of the horizontal baffle; the material of the microporous aeration disc is preferably polyethylene (PE); the diameter of the air inlet pipeline of the microporous aeration disc is preferably 25 mm, and the diameter of the air disc is preferably 215 mm.

[0053] As an embodiment of the present application, the third aeration device 21 in the induction reaction box is connected to the vortex fan 4 in the biological catalysis tank through a pipe material to realize aeration. In the present application, the material of the pipe material is preferably PE, the inner pipe diameter of the pipe material is preferably 40 mm, and the outer pipe diameter is preferably 50 mm. As an embodiment of the present application, a microporous aeration disc air inlet hole 16 is arranged on the side wall of the upper box body of the induction reaction box for passing through the pipe material. In the present application, the microporous aeration disc air inlet hole 16 is preferably a circular hole with a diameter of 32 mm.

[0054] As an embodiment of the present application, the inducement reaction box further comprises a plurality of first through holes 15 arranged on the side wall of the inducement reaction box, which are preferably arranged on the side wall of the upper box of the inducement reaction box, facilitating the exchange of water between the inside and outside of the box. In the present application, the first through holes 15 are preferably water guide round holes with a diameter of 10 mm, and the arrangement of the plurality of first through holes 15 is preferably 3 rows and 12 columns on each side wall.

[0055] As an embodiment of the present application, the inducement reaction box further comprises a water outlet 13 arranged on the side wall of the inducement reaction box, which is more preferably arranged on the side wall of the upper box of the inducement reaction box, for outputting the third water in the inducement reaction box. In the present application, when the inducement reaction system comprises a plurality of parallel inducement reaction boxes, the water in the inducement reaction boxes is introduced into the combined filler system through the water outlet 13; when the inducement reaction system comprises a plurality of serial inducement reaction boxes, the water in the previous inducement reaction box is introduced into the next inducement reaction box, and so on, and the water in the last inducement reaction box is introduced into the combined filler system through the water outlet 13. In the present application, the water outlet 13 is preferably a round hole with a diameter of 40 mm.

[0056] As an embodiment of the present application, the side wall of the lower box of the inducement reaction box is provided with an air inlet hole 17 for inflating the lower box. The water power of the lower box is increased, the exchange of water between the inside and outside of the inducement reaction box is accelerated, and the effect of the biological catalyst on the sludge is promoted. In the present application, the air inlet hole 17 is preferably arranged on the opposite side of the water outlet hole in the inducement reaction box described above. In the present application, the air inlet hole 17 is preferably a round hole with a diameter of 32 mm; the distance between the air inlet hole 17 and the bottom of the inducement reaction box is preferably 100 mm.

[0057] In the present application, the bottom of the inducement reaction box is provided with a plurality of through holes, which are preferably round holes with a diameter of 30 mm, and the distance between two adjacent through holes is preferably 20 mm. As an embodiment of the present application, a sludge-water exchange sleeve such as a pipe is arranged in the through hole. Figure 4As shown, one end of the sludge-water exchange sleeve is inserted into the lower box of the induction reaction box, and the other end is inserted into the sludge. As an embodiment of the present application, the total length of the sludge-water exchange sleeve is preferably 300 mm, and the length ratio of the sludge-water exchange sleeve inside the induction reaction box and the length outside the box is preferably 1:2. The present application can increase the contact space of the sludge and the water body, and promote the degradation of the biological catalyst to the sludge. In the present application, the sludge-water exchange sleeve preferably comprises an inner tube 18 and an outer tube 19, the outer diameter of the outer tube 19 is preferably 30 mm, and the inner diameter of the outer tube 19 is preferably 12 mm; the inner diameter of the inner tube 18 is preferably 20 mm, and the outer diameter of the inner tube 18 is preferably 8 mm; the materials of the inner tube 18 and the outer tube 19 are independently PE; the inner tube 18 and the outer tube 19 are preferably both flower tubes; the porosity of the outer tube 19 is preferably greater than that of the inner tube 18. The present application uses the sludge-water exchange sleeve to prevent the pipe from being blocked, so that the water flow passes smoothly.

[0058] The black and odorous water body sludge in-situ remediation integrated equipment provided by the present application comprises a combined filler system in communication with the water outlet 13 of the induction reaction system, which is used to filter impurities and ammonia nitrogen pollutants in the water body, provide clean water body for the biological catalyst system, and improve the catalytic efficiency of the biological catalyst. In the present application, the combined filler system comprises a plurality of combined filler boxes; when the combined filler system comprises a plurality of combined filler boxes, the combined mode of the plurality of combined filler boxes is preferably parallel or series. In the present application, when the black and odorous water body sludge in-situ remediation integrated equipment is used, the combined filler system is arranged at the bottom of the black and odorous water body; the straight line distance between the combined filler system and the induction reaction system is preferably 15-30 m; the bottom of the combined filler box is preferably provided with a support for fixing the combined filler box at the bottom of the water body.

[0059] In the present application, the shape of the combined filler box is preferably columnar, and more preferably cubic; the edge length of the cubic combined filler box is preferably 500 mm. In the present application, the box material of the combined filler box is preferably stainless steel.

[0060] In the present application, a plurality of second through holes 27 are arranged on the side wall of the combined filler box, which can enable the water body outside the box to enter the inside of the combined filler box. In the present application, the second through hole 27 is preferably a water guide circular hole with a diameter of 10 mm, and the arrangement mode of the plurality of through holes is preferably 3 rows and 12 columns of through holes arranged on each side wall.

[0061] In the application, the inside of the combined filler tank is spaced apart in vertical direction by two detachable circle gratings: detachable outer circle grating 25 and detachable inner circle grating 22; the cavity of the combined filler tank is divided into three coaxial tanks from inside to outside: inner layer tank, middle layer tank and outer layer tank. In the application, the linear distance between the detachable outer circle grating 25 and the side wall of the combined filler tank is preferably equal to the linear distance between the detachable outer circle grating 25 and the detachable inner circle grating 22. In the application, the detachable outer circle grating 25 and the detachable inner circle grating 22 are preferably provided with uniformly distributed fine holes, and the aperture of the fine holes is smaller than the particle size of the filler. In the application, the filler filled in the outer layer tank is volcanic rock, the filler filled in the middle layer tank is zeolite, and the filler filled in the inner layer tank is activated carbon. The filling amount of the filler in each layer tank of the combined filler tank in the application is not particularly limited, and it is appropriate to fill each layer tank. In the application, 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 application, the volcanic rock mainly filters impurities in the water body, and the zeolite and activated carbon mainly adsorb ammonia nitrogen pollutants in the water body.

[0062] In the application, the side wall of the combined filler tank is provided with a water inlet 26 of the combined filler tank; the top or bottom of the inner layer tank of the combined filler tank is provided with a water outlet 24 of the combined filler tank, and the above-mentioned arrangement can make the water entering the combined filler tank pass through the filtration and adsorption of volcanic rock, zeolite and activated carbon in turn, reduce the suspended solids in the water body, and provide clean water for the biological catalysis system. In the application, the water inlet 26 of the combined filler tank is preferably a circular hole with a diameter of 40 mm.

[0063] In the application, the water outlet 24 of the combined filler tank is preferably a circular hole with a diameter of 40 mm, which is used to output the filtered clean water. In the application, when the combined filler system includes multiple parallel combined filler tanks, the water outlet 24 of the combined filler tank is preferably connected with a self-suction water pump 3 in the biological catalysis tank through a pipe material 23, so as to deliver the filtered water in the combined filler tank to the biological catalysis tank; when the combined filler system includes multiple series combined filler tanks, the water in the previous combined filler tank is introduced into the next combined filler tank, and so on, and the filtered water in the last combined filler tank is introduced into the biological catalysis tank through the water outlet 24 of the combined filler tank and the pipe material 23. In the application, one end of the pipe material 23 is preferably inserted into the inner layer tank of the combined filler tank through the water outlet 24 of the combined filler tank, and the depth of the pipe material 23 inserted into the inner layer tank is preferably 300 mm, and the outer diameter of the pipe material 23 is preferably 40 mm; the material of the pipe material 23 is preferably PE; and there is no filler activated carbon inside the pipe material 23.

[0064] As an embodiment of the present application, the structural diagram of the biological catalysis tank is shown in the figure Figure 1 As shown in the figure, the biological catalysis tank is a cuboid tank, a lower channel is arranged at the top of the biological catalysis tank, a self-suction water pump 3, an oxygenation pump 1 and a vortex fan 4 are placed in the lower channel; a first water tank 12 and a second water tank 7 are placed side by side at the bottom of the biological catalysis tank, four microporous aerators are independently arranged at the bottom of the first water tank 12 and the second water tank 7; a water inlet is arranged at the top of the first water tank 12, the water body sucked by the self-suction water pump 3 is introduced into the first water tank 12 through the water inlet of the first water tank 12; the microporous aerator in the first water tank 12 is in communication with the oxygenation pump 1; a direct-current submersible pump 10 is further arranged at the bottom of the first water tank 12, for conveying the water body in the first water tank 12 to the second water tank 7; the microporous aerator in the second water tank 7 is in communication with the vortex fan 4; a biological catalyst feeding device 6 is arranged at one of the upper corners of the second water tank 7, for feeding biological catalyst into the water body; a water outlet is arranged at the bottom of the second water tank 7, for outputting the water body subjected to aeration and oxygenation and feeding of biological catalyst.

[0065] As an embodiment of the present application, the structural diagram of the combined filler tank is shown in the figure Figure 2 As shown in the figure, the combined filler tank is a cuboid tank, a water inlet 14 of the combined filler tank is arranged at the center of the top of the combined filler tank, in communication with the water outlet of the second water tank 7 through a second water tank self-flow drainage pipeline 11, for introducing the water body discharged from the biological catalysis tank and added with biological catalyst; a horizontal baffle is arranged inside the combined filler tank, for dividing the combined filler tank into an upper tank body and a lower tank body; two microporous aerators are arranged on the upper surface of the horizontal baffle, in communication with the vortex fan 4 of the biological catalysis tank through microporous aerator air inlets 16 arranged on the side wall of the upper tank body; three rows of 12 columns of first through holes 15 are arranged on the side wall of the upper tank body, for water exchange between the inside and outside of the tank body; an air charging hole 17 is arranged on the side wall of the lower tank body, for air charging of the lower water body; a water outlet is arranged on the side wall of the upper tank body opposite to the air charging hole 17, for outputting the water body; a mud-water exchange sleeve is arranged at the bottom of the combined filler tank, for increasing the contact space of the bottom mud and the water body, and improving the catalysis effect of the biological catalyst on the water body.

[0066] As an embodiment of the present application, the structural diagram of the combined filler tank is shown in the figure Figure 3As shown, the combined filler box is a cubic box, and a water inlet 26 of the combined filler box is arranged on the side wall of the combined filler box and is communicated with the water outlet 13 of the induction reaction box through a pipe material to introduce the water discharged from the induction reaction box; three rows of 12 columns of second through holes 27 are further arranged on the side wall of the combined filler box, which is more conducive to the water in the river channel entering the combined filler box; the cavity of the combined filler box is spaced apart in the vertical direction and is provided with a detachable outer ring grid 25 and a detachable inner ring grid 22, so that the cavity of the combined filler box is divided into three coaxial boxes from inside to outside, namely an inner layer box, a middle layer box and an outer layer box; the outer layer box is filled with volcanic rocks with a particle size of 8-10 mm; the middle layer box is filled with zeolites with a particle size of 6-8 mm; and the inner layer box is filled with activated carbon with a particle size of 4-6 mm; a water outlet 24 of the combined filler box is arranged on the top of the inner layer box, one end of a pipe material 23 is inserted into the inner layer box through the water outlet 24 of the combined filler box, the other end of the pipe material 23 is connected with the self-suction water pump 3 of the biological catalysis box, and the water filtered by the combined filler box is transported to the biological catalysis box.

[0067] The application also provides a method for in-situ remediation of black and odorous water body sediment based on the above-mentioned technical solutions, which comprises the following steps:

[0068] 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;

[0069] Clean water is introduced into the first water tank 12 to perform aeration and oxygenation to obtain a first water body;

[0070] The first water body is introduced into the second water tank 7, biological catalysts are added into the first water body by using the biological catalyst feeding device 6 in the second water tank 7, the biological catalysts are activated, and a second water body is obtained;

[0071] The second water body is introduced into the induction reaction box and mixed with the sediment introduced through the through hole at the bottom of the induction reaction box, under the condition of aeration, the biological catalysts in the second water body catalyze the sediment to obtain a remediated sediment and a third water body; the third water body is introduced into the combined filler box through the water inlet 26 of the combined filler box on the side wall of the combined filler box, and is filtered by volcanic rocks, zeolites and activated carbon in sequence to obtain clean water; and the clean water is introduced into the first water tank 12 to perform cyclic remediation.

[0072] In the application, the introduction rate of the clean water into the first water tank 12 is preferably 0.5-0.8 m / s.

[0073] After obtaining the first water body, the present application passes the first water body into the second water tank 7, adds biological catalyst into the first water body by using the biological catalyst feeding device 6 in the second water tank 7, activates the biological catalyst, and obtains the second water body. In the present application, the passing rate of the first water body into the second water tank 7 is preferably 1.0 m 3 / L. In the present application, the activation is preferably carried out under the condition of aeration. The present application does not have special limitation on the source of the biological catalyst, and the biological catalyst known by those skilled in the art can be used. In the present application, the biological catalyst is essentially a biological protease, which is a mixed preparation of oxidation-reduction enzymes and transfer enzymes, and can promote the oxidation-reduction reaction of the sediment and catalyze the material transformation in the sediment. In the present application, the adding amount of the biological catalyst is preferably 200-500 ppm.

[0074] After obtaining the second water body, the present application passes the second water body into the induction reaction tank, mixes with the sediment entering through the bottom hole of the induction reaction tank, and carries out the catalysis of the biological catalyst in the second water body to the sediment under the condition of aeration, to obtain the repaired sediment and the third water body. In the present application, the passing rate of the second water body into the induction reaction tank is preferably 1.5-2.0 m 3 / h.

[0075] After obtaining the third water body, the third water body is passed into the combined filler tank through the water inlet on the side wall of the combined filler tank, filtered by the volcanic rock, zeolite and activated carbon in turn, to obtain the clean water body; and the clean water body is passed into the first water tank 12 for cyclic repair. As a specific embodiment of the present application, the third water body is discharged from the water outlet 13 of the induction reaction tank, passed into the combined filler tank through the water inlet 26 of the combined filler tank, filtered by the volcanic rock, zeolite and activated carbon in turn, and the clean water body is discharged from the water outlet 24 of the combined filler tank; and the clean water body is passed into the first water tank 12 through the water inlet of the first water tank for cyclic repair.

[0076] The technical solutions in the present application will be described clearly and completely in combination with the embodiments in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0077] Embodiment 1

[0078] The schematic diagram of the black and odorous water body sediment in-situ repair integrated equipment provided by the present embodiment is shown in Figure 5As shown, the biological catalysis tank is placed on the bank, the induction reaction tank and the combined filler tank are placed on the bottom of the river water body; the water outlet of the biological catalysis tank is communicated with the water inlet of the induction reaction tank; the water outlet of the induction reaction tank is communicated with the water inlet of the combined filler tank; the water outlet of the combined filler tank is communicated with the water inlet of the biological catalysis tank.

[0079] Embodiment 2

[0080] The schematic diagram of the integrated equipment for in-situ remediation of black and odorous water body sediment provided by the embodiment is shown in Figure 6 As shown, the biological catalysis tank is placed on the bank, two induction reaction tanks and two combined filler tanks are placed on the bottom of the river water body alternately; the water outlet of the biological catalysis tank is communicated with the water inlet of the first induction reaction tank;

[0081] the first water outlet of the first induction reaction tank is communicated with the water inlet of the second induction reaction tank, the water outlet of the second induction reaction tank is communicated with the first water inlet of the second combined filler tank;

[0082] the second water outlet of the first induction reaction tank is communicated with the water inlet of the first combined filler tank, the water outlet of the first combined filler tank is communicated with the second water inlet of the second combined filler tank;

[0083] the water outlet of the second combined filler tank is communicated with the water inlet of the biological catalysis tank;

[0084] Among them, a communication water pipe is further arranged between the first induction reaction tank and the first combined filler tank, and a communication water pipe is further arranged between the second induction reaction tank and the second combined filler tank, which can increase the water exchange between the induction reaction tank and the combined filler tank.

[0085] The above only is the preferred embodiment of the present application, it should be pointed out, for ordinary skilled in the art, without departing from the principles of the present application, can also make several improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. An integrated equipment for in-situ remediation of sediment in black and odorous water bodies, characterized in that: It includes a biocatalytic system, an induced reaction system, and a combined packing system connected in sequence; the outlet of the combined packing system is connected to the inlet of the biocatalytic system. In use, the biocatalytic system is installed on land; the induction reaction system and the combined packing system are installed at the bottom of the black and odorous water body; the induction reaction system is installed at the mud-water interface at the bottom of the black and odorous water body. The biocatalytic system includes several biocatalytic boxes; each biocatalytic box is equipped with a first water tank (12) and a second water tank (7) connected in sequence; the first water tank (12) is equipped with a first aeration device; the second water tank (7) is equipped with a biocatalyst dispensing device (6) and a second aeration device (9); each biocatalytic box is also equipped with a channel for placing power equipment; the power equipment includes a self-priming water pump (3), an oxygen pump (1) and a vortex blower (4); The induced reaction system includes several induced reaction chambers (20); each induced reaction chamber (20) is provided with a third aeration device (21); and each induced reaction chamber (20) has several through holes at its bottom. The combined packing system includes several combined packing boxes; each combined packing box has two detachable grids spaced vertically in its cavity, dividing the cavity of the combined packing box into three coaxial boxes, which are, from the inside out, an inner box, a middle box, and an outer box; the outer box is filled with volcanic rock, the middle box is filled with zeolite, and the inner box is filled with activated carbon. A mud-water exchange sleeve is provided in the through hole at the bottom of the induction reaction tank (20); one end of the mud-water exchange sleeve is inserted into the lower box of the induction reaction tank (20), and the other end is inserted into the bottom mud; a number of first through holes (15) are provided on the side wall of the induction reaction tank (20); The mud-water exchange sleeve includes an inner tube (18) and an outer tube (19); both the inner tube (18) and the outer tube (19) are perforated tubes; the porosity of the outer tube (19) is greater than that of the inner tube (18).

2. The integrated equipment for in-situ remediation of black and odorous water body sediment as described in claim 1, characterized in that, When the biocatalytic system includes multiple biocatalytic boxes, the multiple biocatalytic boxes are combined in parallel or in series.

3. The integrated equipment for in-situ remediation of black and odorous water body sediment as described in claim 2, characterized in that, The first aeration device in the first water tank (12) is connected to the oxygen pump (1); The second aeration device (9) in the second water tank (7) is connected to the vortex blower (4); The third aeration device (21) in the induction reaction chamber (20) is connected to the vortex blower (4).

4. The integrated equipment for in-situ remediation of black and odorous water body sediment as described in claim 1, characterized in that, The induction reaction system consists of several induction reaction boxes (20) connected in parallel or in series.

5. The integrated equipment for in-situ remediation of black and odorous water body sediment according to claim 1 or 4, characterized in that, The induction reaction chamber (20) is provided with a horizontal baffle, which divides the induction reaction chamber (20) into an upper chamber and a lower chamber. The height ratio of the upper chamber and the lower chamber is 3:

2. The horizontal baffle is provided with several through holes. The third aeration device (21) inside the induction reaction chamber (20) is provided on the upper surface of the horizontal baffle.

6. The integrated equipment for in-situ remediation of black and odorous water body sediment as described in claim 5, characterized in that, An air filling hole (17) is provided on the lower side wall of the induction reaction chamber (20).

7. The integrated equipment for in-situ remediation of black and odorous water body sediment as described in claim 1, characterized in that, The combined packing system consists of several combined packing boxes connected in parallel or in series; several second through holes (27) are provided on the side wall of the combined packing box.

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