Constructed wetland for efficiently treating combined pollution containing sulfate radicals and heavy metal ions

Abstract

The utility model discloses a constructed wetland for efficiently treating combined pollution containing sulfate radicals and heavy metal ions, which comprises a wetland pool, a stepped treatment component and a re-treatment component, and the stepped treatment component comprises a first mounting cavity, a second mounting cavity and a third mounting cavity which are arranged in the wetland pool in a downward stepped manner. According to the constructed wetland for efficiently treating combined pollution containing sulfate radicals and heavy metal ions disclosed by the utility model, the first net rack, the second net rack and the third net rack are arranged in the wetland pool in a downward stepped manner, so that sewage introduced by a sewage pipe can be circularly filtered and absorbed for three times through a planting layer, a sand layer and a gravel layer in the wetland pool; according to the sewage treatment device, heavy metal ions in sewage are uniformly and efficiently absorbed and fixed, meanwhile, the concentration of sulfate ions in the sewage is reduced, and the first net rack, the second net rack and the third net rack which are movably mounted can also be conveniently lifted and disassembled, so that the convenience of exchange of internal materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial wetlands, in particular to an artificial wetland capable of efficiently treating composite pollution containing sulfate radicals and heavy metal ions. Background Art

[0002] Artificial wetlands are swamp-like surfaces that are artificially constructed and controlled. Sewage and sludge are distributed in a controlled manner on the artificially constructed wetlands. In the process of sewage and sludge flowing in a certain direction, the technology mainly utilizes the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms to treat sewage and sludge.

[0003] The existing artificial wetlands mostly use single-cycle absorption treatment to absorb sulfate ions and heavy metal ions in sewage. Single-cycle absorption treatment is not convenient to form a stepped absorption structure, and thus cannot ensure the uniformity and efficiency of the absorption of sulfate ions and heavy metal ions in sewage. Therefore, we propose an artificial wetland that can efficiently treat complex pollution containing sulfate and heavy metal ions. Utility Model Content

[0004] The main purpose of the utility model is to provide an artificial wetland for efficiently treating composite pollution containing sulfate radicals and heavy metal ions, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions, comprising a wetland pool, a stepped treatment component and a complex treatment component, wherein the stepped treatment component comprises a first installation cavity, a second installation cavity and a third installation cavity arranged in a downward stepped manner in the wetland pool, and a first grid, a second grid and a third grid movably installed in the first installation cavity, the second installation cavity and the third installation cavity, respectively; a water outlet is also provided on one side of the bottom of the first installation cavity, the second installation cavity and the third installation cavity; a planting layer, a sand layer and a gravel layer are respectively arranged in the first grid from top to bottom; a first partition is movably installed between the planting layer, the sand layer and the gravel layer in the first grid; the complex treatment component comprises a fourth installation cavity opened at the bottom of the wetland pool, and a fourth grid movably installed in the fourth installation cavity, and the fourth grid has the same structure as the first grid; a zeolite layer, a ceramsite layer and an activated carbon layer are respectively arranged in the fourth grid from top to bottom.

[0007] Preferably, the structures arranged inside the second grid and the third grid are the same as that of the first grid, and the bottoms of the first grid, the second grid and the third grid are all hollow structures.

[0008] Preferably, the step processing assembly further comprises a first support platform fixedly mounted at the bottom of the first installation cavity, the second installation cavity and the third installation cavity, and the first support platform is a U-shaped structure.

[0009] Preferably, the stepped treatment assembly further comprises a sewage pipe fixedly installed on the outer side of the upper end of the wetland pool, and a plurality of branches arranged and fixedly installed on the upper end of the sewage pipe.

[0010] Preferably, the complex treatment component also includes a second partition movably installed between the zeolite layer, the expanded clay layer and the activated carbon layer in the fourth grid, and a second support platform fixedly installed at the bottom of the fourth installation cavity, and the second support platform has the same structure as the first support platform.

[0011] Preferably, the complex processing assembly further includes a water outlet extending through the outside of the fourth installation cavity.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, the first grid, the second grid and the third grid arranged in a downward step in the wetland pool can filter and absorb the sewage introduced into the sewage pipe three times through the planting layer, the sand layer and the gravel layer inside, so as to evenly and efficiently absorb and fix the heavy metal ions in the sewage, and at the same time reduce the concentration of sulfate ions in the sewage, and the first grid, the second grid and the third grid installed movably can also be conveniently lifted and disassembled, thereby improving the convenience of replacing the internal materials;

[0014] 2. In the utility model, the fourth grid movably installed in the fourth installation cavity at the bottom of the third installation cavity can filter and absorb the sewage after three filtration and absorption again through the zeolite layer, expanded clay layer and activated carbon layer inside it which have strong adsorption capacity for heavy metal ions and sulfate ions, thereby increasing the adsorption capacity of the wetland and improving the removal efficiency of pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is the disassembly diagram of the first, second, third and fourth grid frames of the utility model;

[0017] Figure 3 It is a side sectional view of the utility model;

[0018] Figure 4 It is a side sectional view of the first grid of the utility model;

[0019] Figure 5 It is a side sectional view of the fourth grid of the utility model.

[0020] Reference numerals:

[0021] 100. Wetland pool;

[0022] 200, step treatment assembly; 201, first installation cavity; 202, second installation cavity; 203, third installation cavity; 204, first grid; 205, second grid; 206, third grid; 207, water inlet; 208, planting layer; 209, sand layer; 210, gravel layer; 211, first partition; 212, first support platform; 213, sewage pipe; 214, branch pipe;

[0023] 300, complex treatment assembly; 301, fourth installation cavity; 302, fourth grid; 303, zeolite layer; 304, ceramsite layer; 305, activated carbon layer; 306, second partition; 307, second support platform; 308, water outlet. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] Embodiment 1:

[0026] like Figure 1-4 As shown, the present embodiment provides an artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions, comprising a wetland pool 100, a step treatment component 200 and a complex treatment component 300, wherein the step treatment component 200 comprises a first installation cavity 201, a second installation cavity 202 and a third installation cavity 203 arranged in a downward step manner in the wetland pool 100, and a first grid 204, a second grid 205 and a third grid 206 movably installed in the first installation cavity 201, the second installation cavity 202 and the third installation cavity 203, respectively, a water outlet 207 is also provided on one side of the bottom of the first installation cavity 201, the second installation cavity 202 and the third installation cavity 203, and a planting layer 208, a sand layer 209 are respectively arranged in the first grid 204 from top to bottom. 09 and gravel layer 210, a first partition 211 is movably installed between the planting layer 208, the sand layer 209 and the gravel layer 210 in the first grid 204, the structure arranged inside the second grid 205 and the third grid 206 is the same as the first grid 204, and the bottoms of the first grid 204, the second grid 205 and the third grid 206 are all hollow structures, the step treatment component 200 also includes a first support platform 212 fixedly installed at the bottom of the first installation cavity 201, the second installation cavity 202 and the third installation cavity 203, and the first support platform 212 is a U-shaped structure, the step treatment component 200 also includes a sewage pipe 213 fixedly installed on the outer side of the upper end of the wetland pool 100, and a plurality of branches 214 arranged and fixedly installed at the upper end of the sewage pipe 213.

[0027] Specifically, an artificial wetland is a ground similar to a swamp that is artificially constructed and controlled. Sewage and sludge are controlledly distributed on the artificially constructed wetland. In the process of sewage and sludge flowing in a certain direction, the sewage and sludge are treated mainly by the physical, chemical and biological synergistic effects of soil, artificial media, plants and microorganisms. The first grid 204, the second grid 205 and the third grid 206 arranged in a downward step in the wetland pool 100 can filter and absorb the sewage introduced into the sewage pipe 213 three times through the planting layer 208, the sand layer 209 and the gravel layer 210 therein, so as to evenly and efficiently absorb and fix the heavy metal ions in the sewage, and at the same time reduce the concentration of sulfate ions in the sewage. The first installation cavity 201, the second installation cavity 205 and the third installation cavity 206 in the wetland pool 100 are arranged in a downward step. The first grid 204, the second grid 205 and the third grid 206 movably installed in the second installation cavity 202 and the third installation cavity 203 can also be conveniently lifted and disassembled, thereby improving the convenience of replacing internal materials. The water inlet 207 opened on one side of the first installation cavity 201, the second installation cavity 202 and the third installation cavity 203 is mainly used for outflow circulation after sewage absorption. The first support platform 212 fixedly installed at the bottom of the first installation cavity 201, the second installation cavity 202 and the third installation cavity 203 is mainly used to reserve space at the bottom of the first installation cavity 201, the second installation cavity 202 and the third installation cavity 203, thereby making it easier to flow out of sewage after absorption. The multiple groups of branch pipes 214 fixedly installed at the upper end of the sewage pipe 213 are mainly used to ensure that the sewage is evenly passed into the wetland pool 100.

[0028] Embodiment 2:

[0029] Based on the first embodiment, Figure 3 and Figure 5 As shown, the complex treatment component 300 includes a fourth installation cavity 301 opened at the bottom end of the wetland pool 100, and a fourth grid 302 movably installed in the fourth installation cavity 301, and the fourth grid 302 has the same structure as the first grid 204, and the fourth grid 302 is also provided with a zeolite layer 303, a ceramsite layer 304 and an activated carbon layer 305 from top to bottom, respectively. The complex treatment component 300 also includes a second partition plate 306 movably installed between the zeolite layer 303, the ceramsite layer 304 and the activated carbon layer 305 in the fourth grid 302, and a second support platform 307 fixedly installed at the bottom of the fourth installation cavity 301, and the second support platform 307 has the same structure as the first support platform 212. The complex treatment component 300 also includes a water outlet 308 opened through the outside of the fourth installation cavity 301.

[0030] Specifically, the fourth grid 302 movably installed in the fourth installation cavity 301 at the lower end of the wetland pool 100 can filter and absorb the sewage after three filtration and absorption through the zeolite layer 303, expanded clay layer 304 and activated carbon layer 305 inside, which have strong adsorption capacity for heavy metal ions and sulfate ions, so as to increase the adsorption capacity of the wetland and improve the removal efficiency of pollutants. The second support platform 307 fixedly installed at the bottom of the fourth installation cavity 301 is also used to reserve space at the bottom of the fourth installation cavity 301, so as to facilitate the discharge of sewage through the outer water outlet 308 after absorption.

[0031] The working principle and use process of this utility model:

[0032] After the sewage in the sewage pipe 213 is uniformly transported to the inside of the first grid frame 204 in the wetland pool 100 through the multiple branches 214 at the top, the reeds, cattails, etc. planted in the planting layer 208 in the first grid frame 204 will absorb the heavy metal ions in the sewage, thereby reducing the concentration of sulfate ions. At the same time, the sand layer 209 and the gravel layer 210 at the bottom of the planting layer 208 can also filter and adsorb the metal ions in the sewage. After the sewage is absorbed and filtered in the first grid frame 204, it will also pass through the bottom The water flows through the water outlet 207 to the second grid 205 and the third grid 206 at the lower end, and continuously absorbs the heavy metal ions and sulfate ions in the sewage. The sewage flowing out of the third installation cavity 203 will eventually flow to the inside of the fourth grid 302 in the fourth installation cavity 301, and then pass through the zeolite layer 303, the expanded clay layer 304 and the activated carbon layer 305 inside the fourth grid 302 again, and absorb and adsorb the heavy metal ions and sulfate ions in the sewage again, thereby improving the purification effect of the sewage.

[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions, comprising a wetland pool (100), a step treatment component (200) and a complex treatment component (300), characterized in that: The step treatment assembly (200) comprises a first installation cavity (201), a second installation cavity (202) and a third installation cavity (203) arranged in a downward step manner in a wetland pool (100), and a first grid frame (204), a second grid frame (205) and a third grid frame (206) movably installed in the first installation cavity (201), the second installation cavity (202) and the third installation cavity (203), respectively; a water outlet (207) is also provided on one side of the bottom of the first installation cavity (201), the second installation cavity (202) and the third installation cavity (203); and a planting layer (207) is also provided in the first grid frame (204) from top to bottom. 08), a sand layer (209) and a gravel layer (210), a first baffle (211) is movably installed between the planting layer (208), the sand layer (209) and the gravel layer (210) in the first grid (204), the complex treatment component (300) comprises a fourth installation cavity (301) opened at the bottom of the wetland pool (100), and a fourth grid (302) movably installed in the fourth installation cavity (301), and the fourth grid (302) has the same structure as the first grid (204), and a zeolite layer (303), a ceramsite layer (304) and an activated carbon layer (305) are respectively arranged from top to bottom in the fourth grid (302).

2. The artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions according to claim 1, characterized in that: The structures arranged inside the second grid (205) and the third grid (206) are the same as those of the first grid (204), and the bottoms of the first grid (204), the second grid (205) and the third grid (206) are all hollow structures.

3. The artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions according to claim 1, characterized in that: The step processing assembly (200) further comprises a first support platform (212) fixedly installed at the bottom of the first installation cavity (201), the second installation cavity (202) and the third installation cavity (203), and the first support platform (212) is a U-shaped structure.

4. The artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions according to claim 1, characterized in that: The stepped treatment assembly (200) further comprises a sewage pipe (213) fixedly installed on the outer side of the upper end of the wetland pool (100), and a plurality of branches (214) arranged and fixedly installed on the upper end of the sewage pipe (213).

5. The artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions according to claim 1, characterized in that: The complex treatment component (300) also includes a second partition (306) movably installed between the zeolite layer (303), the expanded clay layer (304) and the activated carbon layer (305) in the fourth grid (302), and a second support platform (307) fixedly installed at the bottom of the fourth installation cavity (301), and the second support platform (307) has the same structure as the first support platform (212).

6. The artificial wetland for efficiently treating composite pollution containing sulfate and heavy metal ions according to claim 1, characterized in that: The reprocessing assembly (300) further comprises a water outlet (308) extending through the outside of the fourth installation cavity (301).

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