CN114014500A

CN114014500A - Modular infiltration dam assembly for river channel treatment

Info

Publication number: CN114014500A
Application number: CN202111350783.2A
Authority: CN
Inventors: 王梅娟; 廖书林; 杜小刚; 刘胜军; 韩艳; 郑香凤
Original assignee: Beijing Hui Heng Environmental Protection Engineering Co ltd
Current assignee: Beijing Hui Heng Environmental Protection Engineering Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-02-08

Abstract

The invention relates to the technical field of river channel treatment, in particular to a modular infiltration dam assembly for river channel treatment. The modularized percolation dam assembly anaerobic module does not need energy consumption, basically does not generate sludge, and simultaneously enables the river channel water body and biological filler to be in full contact reaction, thereby reducing pollutants to the maximum extent. The filler used in the invention has high cost performance and low replacement cost, the manufacturing, production and installation processes of the modular infiltration dam body component are simple, and the B/C ratio of water quality, namely BOD/COD, does not need to be considered in river course treatment, which represents biodegradability.

Description

Modular infiltration dam assembly for river channel treatment

Technical Field

The invention relates to the technical field of river channel treatment, in particular to a modular infiltration dam assembly for river channel treatment.

Background

At present, the treatment measures for black and odorous water rivers at home and abroad include physical, chemical and biological methods and biological-ecological methods which are popular in these years, the physical technology mainly comprises sewage interception and dredging, water regulation, aeration and oxygen charging, and the like. However, the physical method is often good in short-term effect, difficult to maintain the long-term water ecological environment effect, high in cost and easy to be limited by local water conservancy and hydrological conditions. The chemical technology for treating the black and odorous river channel mainly comprises chemical oxidation, chemical precipitation, enhanced flocculation and the like. The chemical method is a treatment method with better effect in the treatment of the polluted river channel, but because chemicals are toxic, even if the chemical treatment efficiency is extremely high, treatment managers need to carefully consider when selecting the treatment method due to the phenomena of secondary pollution and long-term pollution of the water body. The bioremediation technology is a method for restoring polluted river water environment to an ideal state by using the purification capacity of organisms, and the bioremediation technology for water treatment mainly comprises the following steps: microorganism enhancement method, aquatic plant restoration method and bottom mud biological oxidation method. The biological restoration is a method for restoring the original ecological system of the river channel by constructing the ecological system with complete river nutrition level. At present, the technologies used in black and odorous water at home and abroad mainly comprise the following: aeration ecological purification method, biological grid restoration technology and stable pond (oxidation pond) treatment technology. The black and odorous water body is very complicated in pollution condition, and the treatment effect of the traditional single treatment method is poor. Therefore, according to the specific conditions of the river, people pay attention to how to adopt the bioremediation technology to comprehensively treat the black and odorous rivers, effectively and radically treat the black and odorous water body, and improve the water quality of the rivers.

Disclosure of Invention

Technical problem to be solved

In view of the defects and shortcomings of the prior art, the invention provides a modular infiltration dam assembly for river channel treatment, which solves the technical problems that the water body condition of a river channel is complex, the conventional single method is difficult to realize radical treatment in all directions and the treatment effect is difficult to maintain for a long time.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that: a modular percolation dam assembly for river regulation is characterized in that a plurality of modular percolation dam assemblies which are continuously arranged are combined to form a continuous modular percolation dam, the modular percolation dam assembly is arranged in a river water body, and the modular percolation dam assembly comprises an anaerobic module and an aerobic module communicated with the anaerobic module; the width of the anaerobic module is equal to the width of the riverway, and the height of the anaerobic module is equal to the normal water level of the riverway water body;

the anaerobic module comprises: the dam comprises a dam body shell and a plurality of water baffles, wherein the dam body shell forms a closed area, the water baffles are used for prolonging the retention time of a water body in the dam body shell, and the water baffles are alternately arranged according to lower openings and upper openings to form a baffling channel;

a water inlet is formed in one side face of the dam body shell corresponding to the water flow direction in the river channel, and a water outlet is formed in the opposite side face of the dam body shell;

the plurality of water baffles are fixed in the dam body shell to form a baffling passage for the water body of the river channel to flow through; biological fillers for adsorbing pollutants in the river water body are arranged in the baffling passage, and meanwhile, microbial pollutant degradation reaction is carried out;

the aerobic modules are arranged in the water flow direction at the downstream of the water outlet and symmetrically arranged along the central line of the river course;

the biological filler is one or more of the following: coke, zeolite, and volcanic rock.

The width of the anaerobic module is L (m), the height of the anaerobic module is H (m), and the length of the anaerobic module isB and m, the water storage volume V of the anaerobic module is L B H (m)³)；

The water inflow of the anaerobic module is Q (m)³H), the porosity of the biological filler in the anaerobic module is epsilon, and the retention time of the riverway water body in the anaerobic module is HRT (V & epsilon/Q & h);

the biological filler has the capacity of filtering and removing specified pollutant components of eta (mg/kg), the concentration of pollutants in the river water body is C (mg/L), and the density of the biological filler is rho (g/cm)³) And the removal rate of the anaerobic module is E ═ η V ═ ρ/(Q × C24).

The water baffles are continuously and vertically arranged at the top and the bottom in the dam body shell, and the water baffles and the dam body shell are arranged in the same width.

When the biological filler is coke, zeolite and volcanic rock, the proportion is 1: 1: 1, mixing and setting; the biological filler fills the deflection passages to allow water to seep through the filler between the deflection passages.

Preferably, the coke has a particle size of 10-30 mm and a density of 1.4-1.6 g/cm³The dissolubility rate is not more than 3.5 percent;

preferably, the zeolite has a particle size of 20-30 mm, a porosity of 60% or more, and a density of 2-2.2 g/cm³；

Preferably, the particle size of the vesuvianite is 20-30 mm, the porosity is more than 70%, and the density is 1.5-1.7 g/cm³。

The aerobic module is a non-closed area and comprises galvanized steel pipe fixing piles continuously arranged along the center line in the water flow direction at the bottom of the river channel.

The aerobic module further comprises an aerator pipe, and the aerator pipe is parallel to the bottom of the river channel and is fixedly arranged on the galvanized steel pipe fixing pile.

The aerobic module also comprises aeration discs, and the aeration discs are continuously arranged on the aeration pipe to form continuous water circulation in a river water body in cooperation with the aeration pipe.

The aerobic module also comprises a fan assembly, and the fan assembly is communicated with the aeration pipe; the fan subassembly outside is equipped with waterproof construction, and the fan subassembly that is equipped with waterproof construction installs under water in the river course, perhaps the fan subassembly sets up on the river course bank slope.

The setting height of the water inlet is lower than the normal water level of the river channel water body; the top of the upper opening water baffle and the bottom of the lower opening water baffle are both lower than the water inlet;

the water outlet is arranged at a height lower than the top of the upper opening water baffle and higher than the bottom of the lower opening water baffle.

The dam body shell is made of glass fiber reinforced plastic.

(III) advantageous effects

The invention has the beneficial effects that: the invention discloses a modular infiltration dam assembly for river regulation, which comprehensively regulates river water bodies through an anaerobic module and an aerobic module which are continuously arranged. The modularized percolation dam assembly does not need energy consumption, basically does not generate sludge, and simultaneously enables the river channel water body and the biological filler to be in full contact reaction, thereby reducing pollutants to the maximum extent. The filler used in the invention has high cost performance and low replacement cost, the manufacturing, production and installation processes of the modular infiltration dam body component are simple, and the B/C ratio of water quality, namely BOD/COD, does not need to be considered in river course treatment, which represents biodegradability.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

[ description of reference ]

1: a water inlet;

2: a dam body shell;

3: a water baffle;

4: a water outlet;

5: fixing the galvanized steel pipe pile;

6: an aeration disc;

7: an aeration pipe.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 1.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The invention discloses a modular percolation dam assembly for river regulation. The modularized percolation dam assemblies are arranged in a river water body, and one or more modularized percolation dam assemblies can be arranged according to the actual requirement of the river.

The modular infiltration dam assembly includes an anaerobic module and an aerobic module. The anaerobic module comprises a dam body shell 2 forming a closed area and a plurality of water baffles 3 arranged in the dam body shell 2. The aerobic module is connected with the anaerobic module, and the aerobic module comprises a galvanized steel pipe fixing pile 5 fixedly arranged at the bottom of the river channel, an aeration pipe 7 fixedly arranged on the galvanized steel pipe fixing pile 5, and a plurality of aeration discs 6 fixedly arranged on the aeration pipe 7.

The dam body shell 2 is arranged at the bottom of the river channel and is of a closed cubic structure, the width of the dam body shell 2 is equal to the width of the river channel, the height of the dam body shell is the same as the normal water level, and the length of the dam body shell is set according to the actual size and the requirement of the river channel. The normal water level is obtained after long-term observation of the water level at a certain place of the river, and in one year or a plurality of years, 50% of the water level is equal to or exceeds the elevation value of the water level, and the value is obtained according to the hydrological data of the local river.

The two opposite sides of the dam body shell 2 are correspondingly provided with a water inlet 1 and a water outlet 4, and the sizes of the water inlet 1 and the water outlet 4 are determined according to the current state of a river channel, namely water quality and water quantity.

Be provided with a plurality of breakwater 3 in the dam body shell 2, two adjacent breakwaters 3 are the fixed top and the bottom that set up at dam body shell 2 of vertical direction in proper order, set gradually and leave the passageway that is used for passing through rivers on the relative direction of the breakwater 3 of top and bottom, and the continuous vertical direction setting of a plurality of breakwater 3 equidistant is at the top and the bottom of dam body shell 2 to form the baffling route that water supply flow reciprocates from top to bottom and passes through.

Optionally, the water inlet 1 of this embodiment is disposed at a position 10cm downward from the normal water level of the river water body, the water outlet 4 is disposed at a position 20cm lower than the top end of the upper opening water baffle 3, and the width of the deflection passage is 20 cm.

The baffling passageway forms the filler district that sets up in succession between the passageway, is equipped with filler in the filler district, and the whole baffling passageway of filler packing to make rivers slowly ooze through the filler between the baffling passageway, the baffling passageway is reciprocal from top to bottom to be set up, the dwell time of extension water and with the reaction time of filler, reach abundant filterable effect. The water body of the river channel enters the interior of the dam body shell 2 from the water inlet 1, sequentially seeps out from the filler regions among the baffling passages, and finally flows out from the water outlet 4 to enter the aerobic module.

Preferably, the filling material in the filling material area adopts zeolite, coke and activated carbon, and the filling material ratio is 1: 1: 1, free phosphorus and ammonia nitrogen in the water body can be reduced through the adsorption and filtration of the filler.

Preferably, the dam body shell 2 is made of glass fiber reinforced plastic, and the glass fiber reinforced plastic is light and hard in weight, non-conductive, stable in chemical performance, high in mechanical strength and corrosion-resistant, and is suitable for being arranged in a river channel for a long time.

Preferably, the water baffles 3 are made of a water-impermeable material, such as PVC.

The aerobic module is communicated with the dam body shell 2, the aerobic module is a non-closed area, water in the river channel seeps out through the dam body shell 2 and enters the aerobic module, the aerobic module is arranged at the bottom of the river channel at the downstream of the water outlet of the anaerobic module along the center line of the river channel, and the galvanized steel pipe fixing piles 5 are perpendicular to the bottom of the river channel and are continuously arranged along the center line of the river channel to serve as supporting members of the aerobic module. The aeration pipe 7 is parallel to the bottom of the river channel and is fixedly arranged on the galvanized steel pipe fixing pile 5 as a connecting passage for aeration. A plurality of aeration dish 6 sets gradually on aeration pipe 7, and aeration dish 6 is to aeration oxygenation change water ecological environment in the river course water, forms continuous rivers circulation, increases the dynamic circulation of water, promotes upper and lower layer water exchange, and dissolved oxygen increases rapidly in the water short-term, forms the oxygen boosting and lives the rivers, provides sufficient oxygen for the microbial decomposition in the water.

The aerobic module also comprises a fan component, and the fan component is communicated with the aeration pipe 7 and is used for ventilating the aeration pipe 7. The outside of fan subassembly is equipped with waterproof construction, and the fan subassembly that is equipped with waterproof construction installs under water in the river course, perhaps the fan subassembly sets up on the river course bank slope.

The invention provides a modular percolation dam assembly which comprises an anaerobic module and an aerobic module. The anaerobic modules and the aerobic modules can be flexibly combined and arranged according to the actual condition of the water quality of the river channel according to a certain quantity.

The invention discloses a modular infiltration dam assembly for river regulation, which comprehensively regulates river water bodies through an anaerobic module and an aerobic module which are continuously arranged. The anaerobic module of the modularized percolation dam assembly does not need energy consumption and does not generate sludge, and simultaneously, the river water body and the biological filler can be in full contact reaction, and pollutants are reduced to the maximum extent.

The filler used in the invention has high cost performance and low replacement cost, the manufacturing, production and installation processes of the modularized percolation dam body component are simple, and the B/C ratio (BOD/COD, representing biodegradability) of water quality does not need to be considered in river course treatment.

As a first preferred embodiment of the invention, the length of a river channel is about 2000m, the width of the water surface is 8-15 m, the water depth is about 2m, the water quality before treatment is poor V type, 2 modularized percolation dam assemblies are arranged in the river channel to form an anaerobic + aerobic + anaerobic + aerobic region, and a first percolation dam assembly is provided, wherein the width of an aerobic module is 8m, and the length of the aerobic module is 10 m. Be equipped with 3 breakwaters 3 in the dam body shell 2, in order to form 4 filler regions, the river course water gets into modularization filtration dam subassembly by

water inlet

1, 4 filler regions permeate in proper order, get into good oxygen module by terminal delivery port 4, good oxygen module adopts bottom aeration equipment, set up ABS aeration dish 6, the interval of aeration dish 6 is 2m, arrange along the river course central line, aeration zone length is 50m, the fan adopts the 2.2kw air-blower, second infiltration dam subassembly scale is the same with first infiltration dam subassembly specification, after setting up continuous modularization filtration dam subassembly, quality of water can be superior to V class water, water quality data see the following table.

Index of pollutants	Quality of raw water	Water quality after setting up modularization infiltration dam	Removal rate
				NH3-N(mg/L)	2.5	1.8	28％
TP(mg/L)	0.5	0.35	30％
				COD(mg/L)	45	35	22.22％

As a second preferred embodiment of the present invention, the biological fillers placed between the baffles are zeolite and volcanic rock, the layer thickness of the zeolite layer and the volcanic rock layer is 50cm, each layer of fillers is placed by taking a gabion module as a unit, 4 layers of gabion modules are placed between every 2 water baffles 3, the size of each gabion module unit is 1 × 0.5m, and the gabion modules are convenient to use and replace the fillers at the later stage. An openable cover plate is arranged at the top of the percolation dam so as to be convenient for replacing the gabion module. River water enters the percolation dam from the water inlet 1 and enters the first filtering area after entering the percolation dam, the water passes through the first zeolite filtering layer, the first volcanic stone filtering layer, the second zeolite filtering layer and the second volcanic stone filtering layer from top to bottom and enters the second filtering area from the baffling passage, the water flow direction in the second filtering area respectively passes through the third zeolite filtering area, the third volcanic stone filtering area, the fourth zeolite filtering area and the fourth volcanic stone filtering area from bottom to top and then enters the third filtering area, the distribution condition of a packing layer of the third filtering area is consistent with that of the first filtering area, the arrangement mode of the packing layer of the fourth filtering area is consistent with that of the second filtering area, and the tail end of the fourth packing area is provided with a water outlet 4.

The preferred particle size of the zeolite is 20-30 mm, the porosity is more than 60%, the density is 2-2.2 g/cm3, the adsorption removal capacity of the zeolite per unit mass on ammonia nitrogen can reach more than 2000mg/kg, and the removal capacity on total phosphorus can reach more than 700 mg/kg.

The particle size of the vesuvianite is preferably 20-30 mm, the porosity is more than 70%, the density is 1.5-1.7 g/cm3, the adsorption removal capacity of the vesuvianite of unit mass on ammonia nitrogen can reach 300mg/kg, and the removal capacity on total phosphorus can reach more than 1000 mg/kg.

In a third preferred embodiment of the present invention, the width of the anaerobic module is L (m), the height of the anaerobic module is H (m), the length of the anaerobic module is B (m), and the water storage capacity V ═ L × (B) × (m) of the anaerobic module is H³) (ii) a The water inflow of the anaerobic module is Q (m)³H), the porosity of the biological filler in the anaerobic module is epsilon, and the retention time HRT (HRT) of the riverway water body in the anaerobic module is V epsilon/Q (h).

L is the river course width, and B is confirmed according to river course quality of water, and H is confirmed according to the river course normal water level, and interim project river course surface of water width is 10m, and normal water level 2m, and the river course quality of water current situation is poor V class water, and B sets up to 1.5m, and the zeolite of this embodiment and volcanic rock adsorption scrubbing performance parameter see the following table.

Adsorption decontamination capability table for zeolite and vesuvianite

The pipe diameter of the water inlet pipe 1 is DN50, and the daily water inflow of the percolation dam is 160m³And d. The retention time HRT is V epsilon/Q, V is the volume of the packing area, Q is the inflow, the total HRT of the percolation dam is 0.45d (10.8h), the HRT of each packing area is 2.7h, the removal rate E is eta 1V 1 rho/(Q C24), wherein C is the concentration of the inflow pollutants (unit: mg/L), and the removal rates of ammonia nitrogen and total phosphorus are calculated and shown in the following table:

index of pollutants	Quality of raw water	Water quality after setting up modularization infiltration dam	Removal rate
				NH3-N(mg/L)	4	1.8	55％
TP(mg/L)	0.6	0.38	36.60％

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.

Claims

1. A modularization infiltration dam subassembly for river course is administered, and a plurality of modularization infiltration dam subassembly that lays in succession makes up and forms continuous modularization infiltration dam, modularization infiltration dam subassembly sets up in the river course water, its characterized in that: the modular percolation dam assembly comprises an anaerobic module and an aerobic module communicated with the anaerobic module; the width of the anaerobic module is equal to the width of the riverway, and the height of the anaerobic module is equal to the normal water level of the riverway water body;

the anaerobic module comprises: the dam body comprises a dam body shell (2) forming a closed area and a plurality of water baffles (3) for prolonging the retention time of a water body in the dam body shell (2), wherein the water baffles (3) are alternately arranged according to lower openings and upper openings to form a baffling channel;

a water inlet (1) is formed in one side face of the dam body shell (2) corresponding to the direction of water flow in a river channel, and a water outlet (4) is formed in the opposite side face;

the water baffles (3) are fixed in the dam body shell (2) to form a baffling passage for the water body of the river channel to flow through; biological fillers for adsorbing pollutants in the river water body are arranged in the baffling passage, and meanwhile, microbial pollutant degradation reaction is carried out;

the aerobic modules are arranged in the water flow direction at the downstream of the water outlet (4) and symmetrically arranged along the central line of the river course towards two sides;

2. The modular infiltration dam assembly for river remediation of claim 1, wherein: the width of the anaerobic module is L (m), the height of the anaerobic module is H (m), the length of the anaerobic module is B (m), and the water storage capacity of the anaerobic module is V L B H (m)³)；

3. The modular infiltration dam assembly for river remediation of claim 1, wherein: the water baffles (3) are continuously and vertically arranged at the top and the bottom in the dam body shell (2), and the water baffles (3) and the dam body shell (2) are arranged in the same width.

4. The modular infiltration dam assembly for river remediation of claim 1, wherein: when the biological filler is coke, zeolite and volcanic rock, the proportion is 1: 1: 1, mixing and setting; the biological filler is filled in the baffling passages, so that water flows through the filler among the baffling passages to seep out;

the coke has a particle size of 10-30 mm and a density of 1.4-1.6 g/cm³The dissolubility rate is not more than 3.5 percent;

the zeolite has a particle size of 20-30 mm, a porosity of more than 60%, and a density of 2-2.2 g/cm³；

The volcanic rock has a particle size of 20-30 mm, a porosity of more than 70%, and a density of 1.5-1.7 g/cm³。

5. A modular infiltration dam assembly for river remediation according to any one of claims 1 to 4 wherein: the aerobic module is a non-closed area and comprises galvanized steel pipe fixing piles (5) which are continuously arranged along the center line of the river bottom in the water flow direction.

6. The modular infiltration dam assembly for river remediation of claim 5, wherein: the aerobic module further comprises an aeration pipe (7), and the aeration pipe (7) is parallel to the bottom of the river channel and is fixedly arranged on the galvanized steel pipe fixing pile (5).

7. The modular infiltration dam assembly for river remediation of claim 6, wherein: the aerobic module also comprises aeration discs (6), and the aeration discs (6) are continuously arranged on the aeration pipe (7) to form continuous water circulation in the river water body by matching with the aeration pipe (7).

8. The modular infiltration dam assembly for river remediation of claim 6, wherein: the aerobic module also comprises a fan component, and the fan component is communicated with an aerator pipe (7); the fan subassembly outside is equipped with waterproof construction, and the fan subassembly that is equipped with waterproof construction installs under water in the river course, perhaps the fan subassembly sets up on the river course bank slope.

9. The modular infiltration dam assembly for river remediation of claim 1, wherein: the setting height of the water inlet (1) is lower than the normal water level of the river water body;

the top of the upper opening water baffle (3) and the bottom of the lower opening water baffle (3) are both lower than the water inlet (1);

the water outlet (4) is arranged at a height lower than the top of the upper opening water baffle (3) and higher than the bottom of the lower opening water baffle (3).

10. The modular infiltration dam assembly for river remediation of claim 1, wherein: the dam body shell (2) is made of glass fiber reinforced plastic.