CN113979594A - Method for strengthening treatment of salt-containing wastewater by using ditch type oxidation pond - Google Patents

Method for strengthening treatment of salt-containing wastewater by using ditch type oxidation pond Download PDF

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CN113979594A
CN113979594A CN202111267696.0A CN202111267696A CN113979594A CN 113979594 A CN113979594 A CN 113979594A CN 202111267696 A CN202111267696 A CN 202111267696A CN 113979594 A CN113979594 A CN 113979594A
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layer
reservoir
activated carbon
zeolite
ditch
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CN113979594B (en
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范敬龙
热合曼江·吾甫尔
王海峰
李生宇
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Xinjiang Institute of Ecology and Geography of CAS
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Xinjiang Institute of Ecology and Geography of CAS
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
    • C12N1/20—Bacteria; Culture media therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B5/00—Artificial water canals, e.g. irrigation canals
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B5/00—Artificial water canals, e.g. irrigation canals
    • E02B5/08—Details, e.g. gates, screens
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/103—Naturals or landscape retention bodies, e.g. ponds
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • E03F5/105—Accessories, e.g. flow regulators or cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The invention discloses aThe method for strengthening treatment of salt-containing wastewater by using the ditch type oxidation pond comprises the artificial wetland and also comprises the following steps: s1: arranging a reservoir; s2: setting a water channel; s3: setting a dam in a gabion mesh construction mode for interception at a water outlet of the reservoir in S1; s4: activated carbon is filled in the lower layer gabion mesh and the middle layer gabion mesh, and zeolite is filled in the upper layer gabion mesh; s5: a rubber dam is arranged on the ditch, and a cobble layer, a zeolite layer, an activated carbon layer and a strong treatment layer are arranged in the rubber dam; s6: the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer are soaked by urea decomposition bacteria agent. Has the advantages that: according to the method for removing the organic pollutants in the salt-containing wastewater by using the artificial wetland, tests show that Hg in the wastewater is treated in 48 hours by the microbial inoculum in the artificial wetland ditch supported by the method of the step S6 in the ditch2+The total removal rate of the catalyst reaches 90 percent; as3+The removal rate of the wastewater is over 90 percent, and the wastewater can effectively absorb ammoniacal nitrogen and organic matters in the wastewater and increase dissolved oxygen in the water.

Description

Method for strengthening treatment of salt-containing wastewater by using ditch type oxidation pond
Technical Field
The invention relates to the technical field of water treatment, in particular to a method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond.
Background
With the continuous maturity of the sewage treatment technology of the artificial wetland, the corresponding technology is also applied to the sewage treatment engineering. Such as artificial reed bed wetlands, small-scale constructed wetlands with filler substrates, surface flow constructed wetlands, and the like. However, the implementation of the high-performance artificial wetland sewage treatment system in the arid region has strong regional characteristics and technical implementation difficulties due to the practical difficulties of discontinuity, irregular water inflow and the like in the geographical landscape background of the arid inland region. The constructed wetland constructed in the arid region can overcome the influence of uninterrupted water supply on plants. In addition, the artificial wetland recovered by sewage treatment can generate certain ecological value and economic value and can be recycled in a pretreatment system.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the technical defects and provide a treatment system for treating high-salt high-concentration organic wastewater, which can effectively remove salt in the organic wastewater, degrade organic matters, reduce the concentration of organic pollutants, reduce the workload of subsequent microbial treatment, improve the stability of a microbial treatment system and improve the treatment efficiency.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond comprises an artificial wetland and also comprises the following steps:
s1: the method comprises the following steps of arranging a reservoir, wherein the established reservoir is a rectangular reservoir with the side length of 4-8m, a sewage discharge outlet is established on one side of the reservoir, a water outlet is formed on the other side of the reservoir, and the depth of the reservoir is 1.5-3 m;
s2: the method comprises the following steps of arranging a water channel, manually excavating the water channel to enable the water channel to be S-shaped, tortuous, connecting one end of the downstream of the water channel with an artificial wetland, communicating one end of the upstream of the water channel with a water outlet of a reservoir, wherein the length of the water channel is 700-;
s3: setting a dam in a construction mode of a gabion mesh for interception at a water outlet of the reservoir in S1, wherein the height of the dam is 3/4 which is not less than the depth of the reservoir, the dam is built with 3 layers of gabion meshes which are divided into a lower layer, a middle layer and an upper layer, and the heights of the lower layer, the middle layer and the upper layer are equal;
s4: according to S3, activated carbon is filled in the lower layer gabion mesh and the middle layer gabion mesh, zeolite is filled in the upper layer gabion mesh, the specification of the activated carbon is 20-40mm, the specification of the zeolite is 1-3mm, a cylindrical bag with the diameter of 50cm and the length of 60cm is made of a net base cloth, the activated carbon or the zeolite is filled in the net base cloth bag, then the net base cloth bag is sealed, the filled net base cloth bag is filled in the gabion mesh, and the filling in the net base cloth bag is tightly pressed.
S5: the method comprises the following steps that a rubber dam is arranged at the narrowest position of an S-shaped ditch after two turning positions, a cobble layer, a zeolite layer, an activated carbon layer and a strong treatment layer are arranged in the ditch at the upstream of the rubber dam in a layering mode from bottom to top, the cobble layer is laid to be 90-120cm thick, the zeolite layer is laid to be 50-60cm thick, the activated carbon layer is laid to be 25-30cm thick, the whole height of the strong treatment layer is 90-120cm, the strong treatment layer is artificial aquatic weeds which are fixed by fixed ropes on the water surface, the artificial aquatic weeds are tied on the ropes, and floating balls are arranged on the artificial weeds;
s6: in the step S5, before the cobble layer, the zeolite layer, the activated carbon layer and the strong processing layer are put into use, a urea decomposition bacterial agent is used for soaking for 1-3 hours in a normal-temperature outdoor environment, the urea decomposition bacterial agent is obtained by utilizing staphylococcus succinogenes (staphylococcus succinogenes, belonging to staphylococcus, moderately halophilic bacteria and capable of adapting to a water environment with high salt content) separated and obtained in a laboratory, the staphylococcus succinogenes urea decomposition bacterial agent is added into an NB culture medium, and after the fermentation is carried out for 24 hours in a fermentation tank, the staphylococcus succinogenes urea decomposition bacterial agent capable of being used in large quantities is obtained.
Furthermore, the material of the gabion mesh is hot-galvanized stainless steel wires, the diameter of the gabion mesh is 4mm, and the mesh size of the gabion mesh is 10 multiplied by 10 cm. The length of the gabion net is 5m, the height of a single layer is 0.5m, 3 layers are stacked, and the middle of the gabion net is fixed by an anti-corrosion steel wire buckle.
Furthermore, an aeration device is arranged inside or on the surface of the gabion mesh.
Further, the rib fabric in the step S4 is made of polyethylene, and the specification of the rib fabric is 180-200 meshes.
Furthermore, the floating ball is made of porous suspensible volcanic rocks.
Further, the NB medium comprises the following components: 8-15 g/L of peptone, 2-4 g/L of beef powder, 3-7 g/L of sodium chloride and pH of 7.2-7.8.
Furthermore, the cobblestone diameter of the cobblestone layer is 20-30cm, the zeolite specification in the zeolite layer is 1-3mm, and the activated carbon diameter in the activated carbon layer is 20-40 mm.
Compared with the prior art, the invention has the advantages that: according to the invention, organic pollutants in salt-containing wastewater are removed by a method of arranging a plurality of water treatment layers in the water channel, and through tests, the microorganism bacterium agent in the artificial wetland water channel prepared by the method of the S6 step in the water channel can treat Hg in the wastewater within 48h2+The total removal rate of the catalyst reaches 90 percent; wherein, As3+The removal rate of the wastewater is over 90 percent, ammonia nitrogen and organic matters in the wastewater can be effectively absorbed, the toxicity of hydrogen sulfide at the bottom of the pool can be effectively reduced, the pH value is adjusted, and the dissolved oxygen in the water is increased.
Drawings
FIG. 1 is a schematic structural diagram of a method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond.
Fig. 2 is a schematic view of the structure of the water reservoir of the present invention.
Fig. 3 is a schematic view of the cross-sectional structure a-a in fig. 1.
As shown in the figure: 1. a reservoir; 2. a sewage draining outlet; 3. a water outlet; 4. a dam; 5. a rubber dam; 6. a cobble layer; 7. a zeolite layer; 8. an activated carbon layer; 9. a strong treatment layer; 10. a floating ball; 11. artificial aquatic weeds; 12. a pond; 13. a ditch.
Detailed Description
The following further illustrates embodiments of the present invention.
A method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond comprises an artificial wetland and also comprises the following steps:
s1: the method comprises the following steps of arranging a reservoir, wherein the established reservoir is a rectangular reservoir with the side length of 4-8m, a sewage discharge outlet is established on one side of the reservoir, a water outlet is formed on the other side of the reservoir, and the depth of the reservoir is 1.5-3 m;
s2: the method comprises the following steps of arranging a water channel, manually excavating the water channel to enable the water channel to be S-shaped, tortuous and winding, connecting one end of the downstream of the water channel with an artificial wetland, communicating one end of the upstream of the water channel with a water outlet of a reservoir, wherein the length of the water channel is 700-;
s3: setting a dam in a construction mode of a gabion mesh for interception at a water outlet of the reservoir in S1, wherein the height of the dam is 3/4 which is not less than the depth of the reservoir, the dam is built with 3 layers of gabion meshes which are divided into a lower layer, a middle layer and an upper layer, and the heights of the lower layer, the middle layer and the upper layer are equal;
s4: according to S3, activated carbon is filled in the lower layer gabion mesh and the middle layer gabion mesh, zeolite is filled in the upper layer gabion mesh, the activated carbon is 20-40mm in diameter and 1-3mm in zeolite specification, the filling method is that a cylindrical bag with the diameter of 50cm and the length of 60cm is made of a net base cloth, the activated carbon or zeolite is filled in the net base cloth bag, then the net base cloth bag is sealed, the filled net base cloth bag is filled in the gabion mesh, the filling in the net base cloth bag is tightly pressed, the dam is arranged to be beneficial to raising the water level, the filling filled in the 3 layers of gabion meshes of the dam is beneficial to achieving the natural aeration effect, and water is effectively filtered primarily.
S5: the method is characterized in that a rubber dam is arranged at the narrowest part of an S-shaped water channel after two turning positions, a cobble layer, a zeolite layer, an activated carbon layer and a strong treatment layer are arranged in the water channel at the upstream of the rubber dam in a layered mode from bottom to top, the cobble layer is laid with the thickness of 90-120cm, the zeolite layer is laid with the thickness of 50-60cm, the activated carbon layer is laid with the thickness of 25-30cm, the whole height of the strong treatment layer is 90-120cm, the strong treatment layer is artificial aquatic weeds which are fixed by fixed ropes on the water surface, the artificial aquatic weeds are tied on the ropes, floating balls are arranged on the artificial weeds, the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer which are arranged in the water channel also play a role in artificially creating the wet land, waste water is effectively treated, and a pond for storing water can be arranged on the water channel between the rubber dam and the artificial wet land for storing water level;
s6: in the step S5, before the cobble layer, the zeolite layer, the activated carbon layer and the strong processing layer are put into use, a urea decomposition bacterial agent is used for soaking for 1-3 hours in a normal-temperature outdoor environment, the urea decomposition bacterial agent is obtained by utilizing staphylococcus succinogenes (staphylococcus succinogenes, belonging to staphylococcus, moderately halophilic bacteria and capable of adapting to a water environment with high salt content) separated and obtained in a laboratory, the staphylococcus succinogenes urea decomposition bacterial agent is added into an NB culture medium, and after the fermentation is carried out for 24 hours in a fermentation tank, the staphylococcus succinogenes urea decomposition bacterial agent capable of being used in large quantities is obtained.
The material of the gabion net is hot-galvanized stainless steel wires, the specification is 4mm in diameter, and the specification of meshes of the gabion net is 10 multiplied by 10 cm. The length of the gabion net is 5m, the height of a single layer is 0.5m, 3 layers are stacked, and the middle of the gabion net is fixed by an anti-corrosion steel wire buckle. Furthermore, can be equipped with artifical aeration equipment inside the gabion net or on the surface increase, increase aeration equipment on the gabion net and can effectively increase the dissolved oxygen of aquatic, provide oxygen for the water treatment microorganism, improve the treatment effect to water. The ribbed fabric in the step S4 is made of polyethylene and has the specification of 180-200 meshes. The floating ball is made of porous suspensible volcanic rocks. The NB medium comprises the following components: 8-15 g/L of peptone, 2-4 g/L of beef powder, 3-7 g/L of sodium chloride and pH of 7.2-7.8. The cobblestone diameter of the cobblestone layer is 20-30cm, the zeolite specification in the zeolite layer is 1-3mm, and the activated carbon diameter in the activated carbon layer is 20-40 mm.
Tests show that the Hg of the microbial inoculum is within 48 hours2+The total removal rate of the catalyst reaches 90 percent; within 48h, As3+The removal rate of (2) is also 90% or more. The zeolite, activated carbon and artificial aquatic weed have unique adsorption, screening, cation and anion exchange and catalytic performances due to the fact that the zeolite, activated carbon and artificial aquatic weed have a plurality of uniform tubular pore canals with large inner surface area. Can absorb ammonia nitrogen and organic matters in the wastewater, effectively reduce the toxicity of hydrogen sulfide at the bottom of the pool, adjust the pH value, increase the dissolved oxygen in the water, and then slowly release the dissolved oxygen in the form of microbubbles, thereby preventing the water quality from deteriorating. After the strengthening treatment, purified water is discharged into the artificial wetland, and because the water flow in the channel of the arid area is easy to be interrupted, plants mainly comprising reed, water wax and tamarix chinensis are planted in the artificial wetland, and the sewage is further purified by the absorption of the plants.
The first embodiment is as follows:
a method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond comprises an artificial wetland and also comprises the following steps:
s1: the method comprises the following steps of arranging a reservoir, wherein the established reservoir is a rectangular reservoir with the side length of 4m, a drain outlet is established on one side of the reservoir, a water outlet is formed on the other side of the reservoir, and the depth of the reservoir is 1.5 m;
s2: the method comprises the following steps of arranging a water channel, wherein the water channel is excavated artificially, so that the water channel is S-shaped, bent and curved, the downstream end of the water channel is connected with an artificial wetland, the upstream end of the water channel is communicated with a water outlet of a reservoir, the length of the water channel is 700m, and the bending rate of a river bank line of the water channel is 1: 2.0;
s3: setting a dam in a gabion mesh construction mode for interception at a water outlet of the reservoir in S1, wherein the dam is set to be 3/4 the height of which is not less than the depth of the reservoir;
s4: according to S3, activated carbon is filled in the lower layer gabion mesh and the middle layer gabion mesh, zeolite is filled in the upper layer gabion mesh, the specification of the activated carbon is 20mm, the specification of the zeolite is 1mm, a cylindrical bag with the diameter of 50cm and the length of 60cm is manufactured by using a net cloth, the activated carbon or the zeolite is filled in the net cloth bag, then the net cloth bag is sealed, the filled net cloth bag is filled in the gabion mesh, and the filler in the net cloth bag is tightly pressed.
S5: a rubber dam is arranged at the narrowest position of the S-shaped ditch after two turning positions, a cobble layer, a zeolite layer, an activated carbon layer and a strong treatment layer are arranged in the upstream ditch of the rubber dam in a layering manner from bottom to top, the paving thickness of the cobble layer is 90cm, the paving thickness of the zeolite layer is 50cm, the paving thickness of the activated carbon layer is 25cm, and the overall height of the strong treatment layer is 90 cm;
s6: and S5, before the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer are put into use, soaking the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer for 1 hour in an outdoor environment at normal temperature by using a urea decomposition bacterium microbial inoculum.
Example two:
a method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond comprises an artificial wetland and also comprises the following steps:
s1: the method comprises the following steps of arranging a reservoir, wherein the established reservoir is a rectangular reservoir with the side length of 8m, a drain outlet is established on one side of the reservoir, a water outlet is formed on the other side of the reservoir, and the depth of the reservoir is 3 m;
s2: the method comprises the following steps of arranging a water channel, wherein the water channel is excavated artificially, so that the water channel is S-shaped, bent and curved, the downstream end of the water channel is connected with an artificial wetland, the upstream end of the water channel is communicated with a water outlet of a reservoir, the length of the water channel is 1200m, and the bending rate of a river bank line of the water channel is 1: 3.0;
s3: setting a dam in a gabion mesh construction mode for interception at a water outlet of the reservoir in S1, wherein the dam is set to be 3/4 the height of which is not less than the depth of the reservoir;
s4: according to S3, activated carbon is filled in the lower layer gabion mesh and the middle layer gabion mesh, zeolite is filled in the upper layer gabion mesh, the activated carbon is 40mm in diameter and 3mm in size, a cylindrical bag 50cm in diameter and 60cm in length is made of a net base cloth, the activated carbon or zeolite is filled in the net base cloth bag, then the net base cloth bag is sealed, the filled net base cloth bag is filled in the gabion mesh, and the filler in the net base cloth bag is tightly pressed.
S5: a rubber dam is arranged at the narrowest position of the S-shaped ditch after two turning positions, a cobble layer, a zeolite layer, an activated carbon layer and a strong treatment layer are arranged in the upstream ditch of the rubber dam in a layering manner from bottom to top, the paving thickness of the cobble layer is 120cm, the paving thickness of the zeolite layer is 60cm, the paving thickness of the activated carbon layer is 30cm, and the overall height of the strong treatment layer is 120 cm;
s6: and S5, before the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer are put into use, soaking the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer for 3 hours at normal temperature in an outdoor environment.
Example three:
a method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond comprises an artificial wetland and also comprises the following steps:
s1: the method comprises the following steps of arranging a reservoir, wherein the established reservoir is a rectangular reservoir with the side length of 5m, a drain outlet is established on one side of the reservoir, a water outlet is formed on the other side of the reservoir, and the depth of the reservoir is 2 m;
s2: the method comprises the following steps of arranging a water channel, wherein the water channel is excavated artificially to be S-shaped, bent and curved, the downstream end of the water channel is connected with an artificial wetland, the upstream end of the water channel is communicated with a water outlet of a reservoir, the length of the water channel is 900m, and the bending rate of a river bank line of the water channel is 1: 2.5;
s3: setting a dam in a gabion mesh construction mode for interception at a water outlet of the reservoir in S1, wherein the dam is set to be 3/4 the height of which is not less than the depth of the reservoir;
s4: according to S3, activated carbon is filled in the lower layer gabion mesh and the middle layer gabion mesh, zeolite is filled in the upper layer gabion mesh, the specification of the activated carbon is 30mm, the specification of the zeolite is 2mm, a cylindrical bag with the diameter of 50cm and the length of 60cm is made of a net bottom cloth, the activated carbon or the zeolite is filled in the net bottom cloth bag, then the net bottom cloth bag is sealed, the filled net bottom cloth bag is filled in the gabion mesh, and the filler in the net bottom cloth bag is tightly pressed.
S5: the rubber dam is arranged at the narrowest position of the S-shaped ditch after two turning positions, a cobble layer, a zeolite layer, an activated carbon layer and a strong treatment layer are arranged in the upstream ditch of the rubber dam in a layering mode from bottom to top, the paving thickness of the cobble layer is 110cm, the paving thickness of the zeolite layer is 55cm, the paving thickness of the activated carbon layer is 27cm, and the overall height of the strong treatment layer is 110 cm;
s6: and S5, before the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer are put into use, soaking the cobble layer, the zeolite layer, the activated carbon layer and the strong treatment layer for 2 hours in an outdoor environment at normal temperature by using a urea decomposition bacterium microbial inoculum.
The present invention and the embodiments thereof have been described above, and the description is not restrictive, and the embodiments shown in the detailed description are only a part of the embodiments of the present invention, not all embodiments, and the actual configuration is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A method for strengthening treatment of salt-containing wastewater by using a ditch type oxidation pond comprises an artificial wetland, and is characterized by also comprising the following steps:
s1: the method comprises the following steps of arranging a reservoir, wherein the established reservoir is a rectangular reservoir with the side length of 4-8m, a sewage discharge outlet is established on one side of the reservoir, a water outlet is formed on the other side of the reservoir, and the depth of the reservoir is 1.5-3 m;
s2: the method comprises the following steps of arranging a water channel, manually excavating the water channel to enable the water channel to be S-shaped, tortuous, connecting one end of the downstream of the water channel with an artificial wetland, communicating one end of the upstream of the water channel with a water outlet of a reservoir, wherein the length of the water channel is 700-;
s3: setting a dam in a construction mode of a gabion mesh for interception at a water outlet of the reservoir in S1, wherein the height of the dam is 3/4 which is not less than the depth of the reservoir, the dam is built with 3 layers of gabion meshes which are divided into a lower layer, a middle layer and an upper layer, and the heights of the lower layer, the middle layer and the upper layer are equal;
s4: according to S3, activated carbon is filled in the lower layer gabion mesh and the middle layer gabion mesh, zeolite is filled in the upper layer gabion mesh, the specification of the activated carbon is 20-40mm, the specification of the zeolite is 1-3mm, the filling method comprises the steps that a cylindrical bag with the diameter of 50cm and the length of 60cm is made of a net base cloth, the activated carbon or the zeolite is filled in the net base cloth bag, then the net base cloth bag is sealed, the filled net base cloth bag is filled in the gabion mesh, and the filling in the net base cloth bag is tightly pressed;
s5: the method comprises the following steps that a rubber dam is arranged at the narrowest position of an S-shaped water channel after two turning positions, a cobble layer, a zeolite layer, an activated carbon layer and a strong treatment layer are arranged in the water channel at the upstream of the rubber dam in a layered mode from bottom to top, the cobble layer is laid to be 90-120cm thick, the zeolite layer is laid to be 50-60cm thick, the activated carbon layer is laid to be 25-30cm thick, the whole height of the strong treatment layer is 90-120cm, the strong treatment layer is artificial aquatic weeds which are fixed by fixed ropes on the water surface, the artificial aquatic weeds are tied on the ropes, and floating balls are arranged on the artificial weeds;
s6: in the step S5, before the cobble layer, the zeolite layer, the activated carbon layer and the strong processing layer are put into use, a urea decomposition bacterial agent is used for soaking for 1-3 hours in a normal-temperature outdoor environment, the urea decomposition bacterial agent is obtained by utilizing Staphylococcus succinogenes (Staphylococcus succinogenes, belonging to Staphylococcus, moderately halophilic bacteria and being capable of adapting to a water environment with high salt content) separated and obtained in a laboratory, the Staphylococcus succinogenes urea decomposition bacterial agent is added into an NB culture medium, and after the fermentation is carried out for 24 hours in a fermentation tank, the Staphylococcus succinogenes urea decomposition bacterial agent capable of being used in large quantities is obtained.
2. The method for the enhanced treatment of saline wastewater by using the ditch-type oxidation pond according to claim 1, wherein the material of the gabion mesh is hot-galvanized stainless steel wire with the diameter of 4mm, and the mesh size of the gabion mesh is 10 x 10 cm; the length of the gabion net is 5m, the height of a single layer is 0.5m, 3 layers are stacked, and the middle of the gabion net is fixed by an anti-corrosion steel wire buckle.
3. The method for the enhanced treatment of the saline wastewater by the ditch-type oxidation pond according to claim 2, wherein aeration devices are arranged inside or on the surface of the gabion mesh.
4. The method as claimed in claim 1, wherein the ribbing cloth in the step S4 is made of polyethylene and has a specification of 180-200 meshes.
5. The method for the enhanced treatment of salt-containing wastewater by using the ditch-type oxidation pond as claimed in claim 1, wherein the floating ball is made of porous suspendable volcanic rock.
6. The method for the enhanced treatment of saline wastewater by using the ditch-type oxidation pond as claimed in claim 1, wherein the NB medium comprises the following components: 8-15 g/L of peptone, 2-4 g/L of beef powder, 3-7 g/L of sodium chloride and pH of 7.2-7.8.
7. The method for the enhanced treatment of the salt-containing wastewater by the ditch-type oxidation pond according to claim 1, wherein the cobble diameter of the cobble layer is 20-30cm, the zeolite specification in the zeolite layer is 1-3mm, and the activated carbon diameter in the activated carbon layer is 20-40 mm.
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