In-situ running water ecological restoration method

Abstract

The invention discloses an in-situ running water ecological restoration method which comprises the following steps: detecting the BOD5 / COD ratio of an environmental water body, and judging the biodegradability of a target environment; sampling an environmental water body, and performing cyclic screening for multiple times through a microbial environment screening device to obtain a compound microbial system; uniformly mixing the compound microorganism bacterium system with a photosynthetic bacterium system in proportion to obtain a mixed bacterium system; according to the preset proportion of the water volume of the environmental water body to the compound microbial system, the mixed microbial system is put into the environmental water body by adopting flow pushing and making equipment; aquatic plants and / or emergent aquatic plants are built and planted in the environmental water body, and stink restoration of the environmental water body is achieved 15-20 days after building is completed. According to the method, the pollution treatment cost can be reduced, the treatment time is shortened, and the environmental resistance of an in-situ ecological system is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of running water ecological restoration, and relates to an in-situ running water ecological restoration method. Background Art

[0002] Black and smelly river water in cities and towns is a water body with a black bottom and a foul odor. It is an extreme state of water pollution. The main reasons for its occurrence are: the discharge of organic pollutants, untreated pesticides, fertilizer wastewater, and domestic and industrial wastewater and rainwater mixed into the river to cause river pollution. Black and smelly river water can easily cause the death of animals and plants, and cannot be irrigated. When the bottom sediment of the water body is seriously polluted, over time, the concentration of pollutants deposited in the bottom sediment will far exceed the concentration in the overlying water body.

[0003] Among the relevant technologies, most of them use mechanical methods to treat river channels, which consumes a lot of manpower and material resources. Not only does it take a long time to treat, but it also has limited effects on ecological restoration. Summary of the invention

[0004] The purpose of the present invention is to provide an in-situ living water ecological restoration method, which can reduce the pollution treatment cost, shorten the treatment time, and improve the environmental resistance of the in-situ ecosystem.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An in-situ living water ecological restoration method comprises the following steps:

[0007] S1. Detect the BOD5 / COD ratio of environmental water to determine the biodegradability of the target environment;

[0008] S2, sampling environmental water and performing multiple rounds of screening through a microbial environmental screening device to obtain a composite microbial strain;

[0009] S3, mixing the composite microbial system and the photosynthetic bacteria system in proportion to obtain a mixed bacteria system;

[0010] S4. According to the preset ratio of the water volume of the environmental water body to the composite microbial bacterial system, the mixed bacterial system is released into the environmental water body by using a flow-pushing device;

[0011] S5. Plant aquatic plants and / or emergent plants in the environmental water body, and achieve odor remediation of the environmental water body within 15-20 days after the construction is completed;

[0012] Among them, the microbial environment screening device includes a tank body, a sleeve body arranged on the outer side of the upper part of the tank body, and a cover body arranged on the sleeve body. The bottom of the tank body is provided with a discharge port, the top of the sleeve body is provided with an annular groove, the annular groove is located on the outer side of the tank body, and the cover body is provided with a liquid inlet guiding the tank body.

[0013] Furthermore, the composite microbial system and the photosynthetic bacteria system are mixed at a ratio of 1:0.8-1.5.

[0014] Furthermore, the composite microbial system and the photosynthetic bacteria system are mixed in a ratio of 1:1.

[0015] Furthermore, the preset ratio is to use 0.8-3 kg of the composite microbial system for 1 cubic meter of environmental water.

[0016] Furthermore, the preset ratio is 1±0.1 kg of the composite microbial strain for 1 cubic meter of environmental water.

[0017] Furthermore, between steps S3 and S4, there is also a step S31: adding ecological restoration agents to the environmental water body in proportion.

[0018] Furthermore, 2-3 kg of the ecological restoration agent is used for 1 cubic meter of environmental water.

[0019] Furthermore, the ecological restoration agent includes 40-50 parts of porous coal gangue, 25-35 parts of biochar, 15-18 parts of calcium peroxide, 3-6 parts of ferrous sulfate and 4-8 parts of calcium chloride.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The in-situ living water ecological restoration method of the present invention is mainly aimed at the treatment of black and smelly phenomena in connected water systems, such as environmental water bodies polluted by aquaculture tail water. Based on the principle of relieving environmental oxygen debt, oxygenation and degradation of organic matter are carried out. Because the composite microbial system selected from the environmental water body is mixed with the photosynthetic bacteria system, the composite microbial system degrades the organic matter in the environmental water body, and the photosynthetic bacteria system replenishes oxygen, and aquatic plants and emergent plants produce oxygen and replenish oxygen. After the system is completed, turbidity and odor can be significantly reduced within 15-20 days, thereby realizing the black and smelly restoration of the water environment in the operating area. The entire treatment process is short in time, does not require complicated manpower and mechanical operations, effectively reduces pollution treatment costs, and improves the environmental resistance of the in-situ ecosystem. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative work, among which:

[0023] Figure 1 Schematic diagram of the structure of the microbial environment screening device according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 10-tank body; 11-discharging port;

[0026] 20- sleeve body; 21- annular groove;

[0027] 30-cover body; 31-liquid inlet. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0030] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] As described in the background technology, black and smelly river water in cities and towns is a water body with a black bottom and a foul odor. It is an extreme state of water pollution. The main reasons for its occurrence are: the discharge of organic pollutants, untreated pesticides, fertilizer wastewater, and domestic and industrial wastewater and rainwater mixed into the river to cause river pollution. Black and smelly river water can easily cause the death of animals and plants, and cannot be irrigated. When the bottom sediment of the water body is seriously polluted, over time, the concentration of pollutants deposited in the bottom sediment will far exceed the concentration in the overlying water body. In the relevant technology, most of them use mechanical methods to treat the river, which consumes a lot of manpower and material resources. Not only does it take a long time to process, but it also has limited effects on ecological restoration.

[0032] Based on this, the inventors have created an in-situ living water ecological restoration method of the present application to solve the above-mentioned technical problems.

[0033] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0034] Example

[0035] An in-situ living water ecological restoration method comprises the following steps.

[0036] S1. Detect the BOD5 / COD ratio of environmental water to determine the biodegradability of the target environment. Here, it should be noted that the BOD5 / COD index is the ratio of the 5-day biochemical oxygen demand to the chemical oxygen demand, which is an indicator of the biodegradability of sewage.

[0037] S2. Sampling environmental water and performing multiple cycles of screening through a microbial environmental screening device to obtain a composite microbial strain. Here, the microbial environmental screening device is used to set a target environmental background value and perform multiple cycles of screening in a small space, and finally obtains a composite microbial strain with activity and strong functionality as a functional microbial strain, so that when it is put into the environmental water, it can achieve the degradation of organic matter in the environmental water.

[0038] S3, mixing the composite microbial system and the photosynthetic bacteria system in proportion to obtain a mixed bacteria system.

[0039] S4. According to the preset ratio of the water volume of the environmental water body to the composite microbial bacterial system, the mixed bacterial system is released into the environmental water body by using the flow-pushing device. For example, in the flow-pushing device, the water body is jetted through the rotation of the flow-pushing turbine, and the top is connected with an aeration device. By using the Bernoulli principle, the air is sprayed through the water circulation to increase the dissolved oxygen content in the environmental water body and fully mix the mixed bacterial system with the environmental water body.

[0040] S5. Plant aquatic plants and / or emergent plants in the environmental water body, and the odor of the environmental water body will be restored within 15-20 days after the construction is completed.

[0041] See also Figure 1 The microbial environment screening device comprises a tank body 10, a sleeve body 20 sleeved on the upper outer side of the tank body 10, and a cover body 30 covered on the sleeve body 20. The bottom of the tank body 10 is provided with a discharge port 11, the top of the sleeve body 20 is provided with an annular groove 21, the annular groove 21 is located on the outer side of the tank body 10, and the cover body 30 is provided with a liquid inlet 31 leading to the tank body 10. In the microbial environment screening device, the tank body 10 has a volume of 1L for filling and screening nutrient solution, and the target strain will be screened out in the tank body 10. The top of the sleeve body 20 can be a retention layer of cotton and rock consumables with high porosity, which is mainly used to retain the target strain / bacterial system. The annular groove 21 has a volume of 0.5L, which is a water bath insulation layer for controlling the environmental temperature and generating a biological bacterial film for convenient purification and cultivation. The cover body 30 has a volume of 0.5L. After the water flows into the liquid inlet 31, it flows out from the outlet 11, and is adjusted by the peristaltic pump, and sprays from the upper spray port. The spray range and angle are adjusted through the cover 30. Pure oxygen can be added during the process to adjust the dissolved oxygen content. The tank 10 can be built with temperature and pH probes, and finally the quantitative control of dissolved oxygen, ambient temperature, and pH of the nutrient solution can be completed. Implementation measures: ① Obtaining the target sample in the environment; ② Preparing the nutrient solution and adjusting the screening parameters; ③ Placing the target sample in the tank 10 and mixing it; ④ Placing the interception layer sample on the top of the tank 10; ⑤ Starting spraying through the peristaltic pump; ⑥ According to the biochemical reaction activity, after screening for 3 to 5 days, remove the interception sample for purification and culture; ⑦ Successful acquisition of the target strain / bacterial line.

[0042] The in-situ living water ecological restoration method of the present invention is mainly aimed at the treatment of black and smelly phenomena in connected water systems, such as environmental water bodies polluted by aquaculture tail water. Based on the principle of relieving environmental oxygen debt, oxygenation and degradation of organic matter are carried out. Because the composite microbial system selected from the environmental water body is mixed with the photosynthetic bacteria system, the composite microbial system degrades the organic matter in the environmental water body, and the photosynthetic bacteria system replenishes oxygen, and aquatic plants and emergent plants produce oxygen and replenish oxygen. After the system is completed, turbidity and odor can be significantly reduced within 15-20 days, thereby realizing the black and smelly restoration of the water environment in the operating area. The entire treatment process is short in time, does not require complicated manpower and mechanical operations, effectively reduces pollution treatment costs, and improves the environmental resistance of the in-situ ecosystem.

[0043] In another embodiment, the composite microbial system and the photosynthetic bacteria system are mixed at a ratio of 1:0.8-1.5. Preferably, the composite microbial system and the photosynthetic bacteria system are mixed at a ratio of 1:1. It has been verified in practice that less photosynthetic bacteria system is required while ensuring the oxygen production demand for the environmental water body.

[0044] In another embodiment, the preset ratio is 0.8-3 kg of the composite microbial system for 1 cubic meter of environmental water. Preferably, the preset ratio is 1±0.1 kg of the composite microbial system for 1 cubic meter of environmental water. Here, it should be noted that the ratio of the composite microbial system can be increased accordingly according to the budget, and the more composite microbial system invested, the faster the effect is usually.

[0045] In another embodiment, between steps S3 and S4, there is further included step S31: adding an ecological restoration agent to the environmental water body in proportion. Here, adding the ecological restoration agent can preliminarily treat the environmental water body, thereby reducing the processing load of the composite microbial system and improving the processing efficiency. Preferably, 2-3 kg of the ecological restoration agent is used for 1 cubic meter of environmental water.

[0046] In another embodiment, the ecological restoration agent includes 40-50 parts of porous coal gangue, 25-35 parts of biochar, 15-18 parts of calcium peroxide, 3-6 parts of ferrous sulfate and 4-8 parts of calcium chloride. Porous coal gangue has a solidifying effect on microorganisms, is an excellent carrier of microorganisms, helps the reproduction of microorganisms, and can continuously maintain the activity of functional microorganisms. Calcium peroxide can be used to improve surface water quality, treat heavy metal particle wastewater and control red tide. Ferrous sulfate and calcium chloride, as flocculants, can help remove impurities such as suspended matter, turbidity and color in water.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An in-situ living water ecological restoration method, characterized in that: The following steps are involved: S1. Detect the BOD5 / COD ratio of environmental water to determine the biodegradability of the target environment; S2, sampling environmental water and performing multiple rounds of screening through a microbial environmental screening device to obtain a composite microbial strain; S3, mixing the composite microbial system and the photosynthetic bacteria system in proportion to obtain a mixed bacteria system; S4. According to the preset ratio of the water volume of the environmental water body to the composite microbial bacterial system, the mixed bacterial system is released into the environmental water body by using a flow-pushing device; S5. Plant aquatic plants and / or emergent plants in the environmental water body, and achieve odor remediation of the environmental water body within 15-20 days after the construction is completed; Among them, the microbial environment screening device includes a tank body, a sleeve body arranged on the outer side of the upper part of the tank body, and a cover body arranged on the sleeve body. The bottom of the tank body is provided with a discharge port, the top of the sleeve body is provided with an annular groove, the annular groove is located on the outer side of the tank body, and the cover body is provided with a liquid inlet guiding the tank body.

2. The in-situ living water ecological restoration method according to claim 1, characterized in that: The composite microbial system and the photosynthetic bacteria system are mixed at a ratio of 1:0.8-1.

5.

3. The in-situ living water ecological restoration method according to claim 2, characterized in that: The composite microbial system and the photosynthetic bacteria system are mixed in a ratio of 1:

1.

4. The in-situ living water ecological restoration method according to claim 1, characterized in that: The preset ratio is that 0.8-3 kg of the composite microbial strain is used for 1 cubic meter of environmental water.

5. The in-situ living water ecological restoration method according to claim 4, characterized in that: The preset ratio is that 1±0.1 kg of the composite microbial strain is used for 1 cubic meter of environmental water.

6. An in-situ living water ecological restoration method according to any one of claims 1 to 5, characterized in that: Also included between steps S3 and S4 is step S31: adding ecological restoration agents to the environmental water body in proportion.

7. The in-situ living water ecological restoration method according to claim 6, characterized in that: 2-3 kg of the ecological restoration agent is used for 1 cubic meter of environmental water.

8. The in-situ living water ecological restoration method according to claim 7, characterized in that: The ecological restoration agent comprises 40-50 parts of porous coal gangue, 25-35 parts of biochar, 15-18 parts of calcium peroxide, 3-6 parts of ferrous sulfate and 4-8 parts of calcium chloride.

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