Deodorizing agent for tailing water of tailing pond and use method of deodorizing agent

Abstract

The invention relates to the technical field of tailing water treatment, in particular to a tailing pond tailing water deodorizing agent and a using method thereof, and the tailing pond tailing water deodorizing agent comprises the following raw materials in parts by mass: 1-5 parts of lime, 1-5 parts of polyaluminum chloride and 0.5-1 part of sodium dichloroisocyanurate. According to the invention, suspension liquid and part of organic matters in wastewater can be rapidly removed, and the growth environment of odor-producing microorganisms is destroyed.

Description

Technical Field

[0001] The invention relates to the technical field of tailings water treatment, in particular to a deodorizing agent for tailings water in a tailings pond and a use method thereof. Background Art

[0003] The tailings of non-ferrous metal mines contain a large amount of sulfate and other sulfur-containing substances in the flotation tailings water due to the high sulfur content of the original ore. In addition, during the flotation process, the addition of flotation agents such as xanthate, black medicine, and pine oil will cause many organic substances to remain in the flotation wastewater, which will be oxidized in the tailings pond and consume the oxygen in the water, causing an anaerobic environment in the water, and then forming a large number of anaerobic bacteria such as sulfate-reducing bacteria to breed. Under the action of biochemical reactions, hydrogen sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide and other foul-smelling gases are produced, causing the deterioration of the air in the tailings pond area and the surrounding environment.

[0004] At present, there are generally physical, chemical and biological methods for the treatment of malodorous gases. Physical methods include masking, dilution diffusion and adsorption, chemical methods include combustion, oxidation and absorption, and biological methods include biofilter deodorization and biotrickling filter. For example, the prior application with publication number CN110681253A discloses a method for treating methyl mercaptan odor, which is removed by chlorine dioxide oxidation reaction, UV high-efficiency photolysis purification reaction and ultraviolet synergistic chlorine dioxide advanced oxidation reaction. Although this method can remove methyl mercaptan odor, the process used is complicated, and the investment and operating costs are relatively high. For example, the prior application with publication number CN101591121A discloses a method for treating xanthate wastewater by combining membrane biodegradation and hydrogen peroxide oxidation, and uses membrane biodegradation and hydrogen peroxide two-stage treatment process to treat xanthate wastewater. After treatment, COD and xanthate removal rates reach 90% and 99% or more. Although this method is good at removing COD and xanthate, the membrane biological treatment method used has strict requirements on water quality, and the hydrogen peroxide used is a liquid hazardous chemical, which has high requirements for transportation and storage, and the processing cost is also high. For example, the prior application with publication number CN104189933A discloses a deodorant, including deodorant liquid A and deodorant liquid B, wherein, by mass percentage, the deodorant liquid A includes: bactericide 1% to 10%; stabilizer 2% to 8%; water 80% to 97%; deodorant liquid B includes: gelling agent 4% to 12%; acid-base regulator 1% to 10%; water 78% to 95%. The bactericide is selected from one of inorganic chlorine bactericide, organic chlorine bactericide and organic sulfur bactericide; the stabilizer is selected from one of diisocyanate, maleic anhydride, boric acid, borax, glutaraldehyde and persulfate; the gelling agent is selected from one of sodium carboxymethyl cellulose, alginate, polyethylene, polyvinyl alcohol, polyacrylamide and aluminosilicate; the acid-base regulator is selected from one of dilute hydrochloric acid, dilute sulfuric acid, citric acid, phosphate and sodium hydroxide. The composition is complex and the deodorization effect on non-ferrous metal tailings water is not good.

[0005] Due to the clear and single source of odor pollution in tailings water, combined with the large amount of tailings water and the wide area covered by the tailings pond, the masking method, dilution diffusion method, combustion method, absorption method and biological method are not suitable for the characteristics of the tailings water. The adsorption method requires the establishment of an adsorption device and the treatment time is relatively long. The oxidation method can oxidize the reducing substances in the wastewater. Commonly used oxidants include sodium hypochlorite, bleaching powder, hydrogen peroxide, potassium permanganate, etc. The addition of sodium hypochlorite and bleaching powder will introduce a large amount of chloride ions. When the tailings water is reused in production, it will have an adverse effect on the production indicators or system equipment. Potassium permanganate will introduce heavy metal manganese ions. Hydrogen peroxide is a hazardous chemical and its transportation and storage are relatively cumbersome.

[0006] Therefore, those skilled in the art are committed to developing a deodorizing agent for tailings water in a tailings pond and a method of using the agent to quickly remove suspended liquid and some organic matter in the wastewater and destroy the growth environment of odor-producing microorganisms. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a deodorizing agent for tailings water in a tailings pond and a method for using the agent, which can quickly remove suspended liquid and some organic matter in wastewater and destroy the growth environment of odor-producing microorganisms. The technical solution of the present invention to solve the above technical problems is as follows: A deodorizing agent for tailings water in a tailings pond, comprising the following raw materials and mass proportions: 1 to 5 parts of lime, 1 to 5 parts of polyaluminium chloride, and 0.5 to 1 part of sodium dichloroisocyanurate.

[0009] The beneficial effects of adopting the above scheme are: lime can neutralize acidic sewage, increase the pH value of the water body, and combine with phosphorus in the sewage through chemical reactions to form insoluble mineral precipitates, thereby achieving the effect of removing phosphorus and reducing the phosphorus load of the water body. The addition of lime changes the acid-base balance of the water body, and reacts with colloidal particles, metal ions, etc. in the suspended matter to generate precipitates with a higher specific gravity, which promotes the rapid sedimentation and fixation of the suspended matter, thereby achieving the removal of the suspended matter. The alkaline characteristics of lime can destroy the cell structure and metabolic process of microorganisms, thereby achieving the effect of killing microorganisms. It can also change the activity and stability of toxic substances by adjusting the redox potential of the water body, promote the oxidation, reduction and precipitation of certain toxic substances, and reduce their degree of harm to the water environment. Polyaluminium chloride is used as a coagulant, which can quickly coagulate suspended solids and colloidal substances in sewage, form larger alum flowers and precipitate them, remove suspended solids, colloids, algae and other impurities in the water, thereby purifying the water quality. At the same time, polyaluminium chloride can remove bacteria, deodorize, remove fluorine, aluminum, chromium, oil, turbidity, heavy metal salts, and radioactive pollutants; Sodium dichloroisocyanurate has a high effective chlorine content and has a strong disinfection and sterilization effect. It keeps the water clear and shiny, removes adhesions, and can quickly kill various germs, viruses and other microorganisms, eliminate pollutant molecules such as hydrogen sulfide in the water, and eliminate its color and odor; By mixing the three raw materials in appropriate proportions, it has the multiple functions of quickly removing suspended solids and sulfate ions in wastewater, oxidizing hydrogen sulfide and some organic matter, disinfecting microorganisms and destroying the growth environment of odor-producing microorganisms. The deodorization effect is remarkable, the agent is simple to use, the engineering transformation is small, and the investment and operation cost is low. It has a good reference significance for the deodorization of tailings water in non-ferrous metal mines.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the mass concentration of the deodorant added to the tailings water is 0.01 kg / m 3 Up to 0.3 kg / m 3 .

[0012] The beneficial effect of adopting the above further scheme is that the deodorizing agent of appropriate concentration improves the deodorizing and disinfecting effect of tailings water, while avoiding excessive chloride ion content.

[0013] A method for deodorizing tailings water in a tailings pond, which is applied to the above-mentioned deodorizing agent for tailings water in a tailings pond, comprises the following steps: S100. The tailings water is introduced into the first stirring tank, the second stirring tank and the third stirring tank from the upper end through the water inlet pump; S200. When the water in the first stirring tank, the second stirring tank and the third stirring tank exceeds two-thirds of the volume, stirring is started, and lime, polyaluminium chloride and sodium dichloroisocyanurate are uniformly added to the first stirring tank, the second stirring tank and the third stirring tank, respectively, to form a reagent with a mass concentration of 5% to 20%; S300. Use a dosing pump to inject the agent prepared in step S200 from the bottom of the stirring tank into the tailings water for disinfection and deodorization.

[0014] The beneficial effect of adopting the above further scheme is: since the sewage in the tailings pond is discharged at regular intervals, the dosage is started when the sewage starts to smell, and the various originally dissolved substances are first configured into appropriate concentrations and then introduced into the tailings water, thereby increasing the dissolution rate of the agents and improving the deodorization and disinfection of the tailings water.

[0015] Further, in step S300, a floating vessel is provided in the tailings pond, and the output end of each dosing pump is connected to a drug delivery pipe, and the other end of the drug delivery pipe is installed on the floating vessel. The floating vessel drives the drug delivery pipe to move and spray the agent to various positions in the tailings pond.

[0016] The beneficial effect of adopting the above further scheme is that the floating vessel operates during centralized dosing. Since new sewage has no odor, the drug is added only after the tailings water has an odor. The floating vessel is used to spray the deodorant of appropriate concentration at each location in the tailings pond, so that the deodorant and tailings water are evenly mixed, thereby improving the deodorization and disinfection efficiency of the tailings water.

[0017] Furthermore, in step S300, a mixing and stirring device is also included, and the output end of each drug delivery tube is connected to the mixing and stirring device.

[0018] The beneficial effect of adopting the above further solution is that the mixing and stirring device is conducive to mixing a variety of mixed raw materials evenly.

[0019] Furthermore, the pH value of the tailings water after dosing is 9~11.

[0020] The beneficial effect of adopting the above further scheme is that the pH value of the tailings water is alkaline, which destroys the living environment of microorganisms and improves the disinfection efficiency of the tailings water.

[0021] Further, the dosage t in step S300 is Where s is the water area at the dosing location, in m 2 ; h is the average water depth at the dosing location, in m; c1 is the dosage per unit water, in kg / m 3 ; v is the dosage of the dosing pump, in m 3 / kg; c2 is the actual raw material concentration in the stirring tank, in kg / m 3 .

[0022] The beneficial effect of adopting the above further scheme is that by accurately controlling the single dosage, the single dosage time is inversely proportional to the dosage and proportional to the water area and water depth, so that the deodorant in the tailings water is maintained at an appropriate concentration.

[0023] Furthermore, before step S300, the following steps are also included: S210. Obtaining the smelly tailings water from the original tailings pond; S220. Obtain new tailings water discharged into the tailings pond most recently; S230. Mixing the odorous tailings water obtained in step S210 and the new tailings water obtained in step S220 to form mixed tailings water; S240. Detect the odor concentration of the mixed tailings water in step S230 through the detection component. When the odor concentration reaches the set value, transmit the dosing information to the dosing pump.

[0024] The beneficial effect of adopting the above further scheme is: since the tailings wastewater is discharged into the tailings pond on a regular basis, the wastewater just discharged into the tailings pond does not have a bad smell. After the wastewater is temporarily stored for a period of time, the microorganisms will decompose the substances in the wastewater to form odor to pollute the environment. If the deodorant of the tailings pond is discharged into the tailings pond in advance, the discharge of wastewater will cause the deodorant discharged in advance to decompose in advance (mainly the volatilization of chloride ions), reducing the deodorization effect of the subsequent tailings pond. In addition, the wastewater composition in the tailings pond is complex, containing heavy metals, ammonia nitrogen, cyanide, flotation agents and their decomposition products and other substances. In the process of sewage treatment, it is necessary to first undergo self-flocculation and precipitation before adding the deodorant, so that the agent can play the best effect and reduce the consumption of the deodorant. Based on this, the best time to add the deodorant to the tailings pond is to add the deodorant when a large amount of odor is about to be generated in the tailings pond, which can reduce the consumption of the agent and reduce the generation of odor.

[0025] Based on this, the odorous tailings water in the original tailings pond is mixed with the new tailings pond water discharged most recently to form mixed tailings water, and the inoculation is completed, so that the mixed tailings water contains microorganisms and the mixture of tailings water is conducive to the rapid reproduction of microorganisms. When the detection component detects a large amount of odor and exceeds the set value, it means that the mixed tailings water has begun to produce a large amount of odorous gas. However, the new tailings water in the tailings pond produces odorous gas slowly. When a large amount of odor is detected in the mixed tailings water, it indicates that odorous gas is about to be produced in the tailings pond. At this time, it is the best time to add deodorizing agents.

[0026] Further, in step S240, the detection assembly includes a detection body and a detection tube assembly, the detection tube assembly includes a first detection tube, a horizontal detection tube, and a second detection tube connected in sequence, and the detection body is installed on the horizontal detection tube; The detection body comprises a first detection body, the lower end of which is conical and connected to and communicated with the horizontal detection tube, the upper end of which is sequentially connected to a second detection body, a third detection body and a measuring tube, and the third detection body is conical, and a malodorous gas detection sensor is also installed on the measuring tube; A floating block is arranged in the horizontal detection tube, and the floating block has a water permeable hole. The upper side of the floating block is connected to a blocking ball for blocking the lower end of the first detection body through a connecting rod, and the upper end of the blocking ball is connected to a blocking block for blocking the measuring tube through a connecting rod.

[0027] The beneficial effect of adopting the above further solution is that when the level detection tube is filled with discharged sewage, the floating block and the blocking ball float up so that the first detection body is connected with the level detection tube, and the blocking block floats up to block the sewage in the measuring tube; When there is only a small amount of sewage in the horizontal detection tube, the floating block and the blocking ball move downward so that the blocking ball blocks the lower end of the first detection body, and the blocking block moves downward to discharge the sewage in the measuring tube into the second detection body and the third detection body.

[0028] Based on the above reasons, the detection device automatically obtains the original smelly tailings water and the new tailings water and mixes them, and then automatically detects the gas concentration of the mixed tailings water. Specifically, when the sewage is discharged to the tailings pond, the detection tube assembly is connected to the discharge pipe, the second detection tube is filled with sewage, the floating block, the blocking ball and the blocking block float up synchronously, the blocking block blocks the measuring tube so that the measuring tube is filled with the sewage discharged last time, and the sewage in the second detection tube enters the second detection body and the third detection body to replace the previous sewage with new sewage; When the sewage is discharged, the floating block, the blocking ball and the blocking block move downward synchronously, so that the blocking ball seals the lower side of the first detection body, and the previous sewage in the measuring tube enters the second detection body and the third detection body to mix, and a mixture of the previous sewage and this sewage is formed in the second detection body and the third detection body.

[0029] Since the last sewage has gone through a discharge cycle, it contains microorganisms. When the microorganisms enter the second and third test bodies and mix with the new sewage, the new sewage is inoculated, the microorganisms will multiply and produce odor, while the new sewage entering the tailings pond has less microorganisms and the time to produce odor will be slower than that in the third test body.

[0030] When the odor gas sensor detects the generation of odor, it means that a large amount of odor gas has begun to be generated in the third detection body. However, the time for the generation of odor gas in the tailings pond is relatively slow. When the odor gas sensor detects the generation of odor, it means that the tailings pond is about to generate odor gas. At this time, it is the best time to add deodorizing agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a deodorizing device according to a specific embodiment of the present invention; Figure 2 The structure of the detection component of the third embodiment of the present invention is shown in FIG. Figure 1 ; Figure 3 Schematic diagram of the structure of the detection component of the third embodiment of the present invention Figure 2 .

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Inlet pump; 2. First stirring tank; 3. Second stirring tank; 4. Third stirring tank; 5. Tailings pond; 6. Dosing pump; 7. Floating boat; 8. Drug delivery pipe; 9. Mixing and stirring device; 10. First detection tube; 11. Horizontal detection tube; 12. Second detection tube; 13. First detection body; 14. Second detection body; 15. Third detection body; 16. Measuring tube; 17. Malodorous gas detection sensor; 18. Floating block; 19. Blocking ball; 20. Blocking block. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] A deodorizing agent for tailings water in a tailings pond, comprising the following raw materials and mass proportions: 1~5 parts of lime, 1~5 parts of polyaluminium chloride, 0.5~1 parts of sodium dichloroisocyanurate. The mass concentration of the deodorant added to the tailings water is 0.01 kg / m 3 Up to 0.3 kg / m 3 .

[0039] like Figure 1 As shown, a method for deodorizing tailings water in a tailings pond is applied to the deodorizing agent for tailings water in a tailings pond as described above, comprising the following steps: S100. The tailings water is respectively introduced from the upper end into the first stirring tank 2, the second stirring tank 3 and the third stirring tank 4 through the water inlet pump 1. Specifically, the tailings water will be discharged into the tailings pond 5, and the water inlet pump 1 pumps the tailings water in the tailings pond 5 into the upper ends of the first stirring tank 2, the second stirring tank 3 and the third stirring tank 4.

[0040] S200. When the water in the first stirring tank 2, the second stirring tank 3 and the third stirring tank 4 exceeds two-thirds of the volume, stirring is started to reduce subsequent reagent precipitation, and lime, polyaluminium chloride and sodium dichloroisocyanurate are uniformly added to the first stirring tank 2, the second stirring tank 3 and the third stirring tank 4 respectively to prepare a reagent with a mass concentration of 5% to 20%.

[0041] Also includes: S210. Obtaining the smelly tailings water from the original tailings pond; S220. Obtain new tailings water discharged into the tailings pond most recently; S230. Mixing the odorous tailings water obtained in step S210 and the new tailings water obtained in step S220 to form mixed tailings water; S240. Detect the odor concentration of the mixed tailings water in step S230 through the detection component. When the odor concentration reaches the set value, transmit the dosing information to the dosing pump 6.

[0042] When the detection component detects that a large amount of odor is generated in the mixed tailings water, it indicates that the new tailings water in the tailings pond is about to generate odor. The dosing pump 6 adds deodorizing agent to the new tailings water in the tailings pond according to the dosing information transmitted by the detection component.

[0043] S300. The agent configured in step S200 is introduced into the tailings water from the bottom of the stirring tank through the dosing pump 6 for disinfection and deodorization. The pH value of the tailings water after dosing is 9 to 11. Specifically, the tailings pond has a floating boat 7, and each dosing pump 6 is connected to a drug delivery pipe 8 at its output end, and the other end of the drug delivery pipe 8 is installed on the floating boat 7. The floating boat 7 drives the drug delivery pipe 8 to move and spray the agent to various positions in the tailings pond 5 to improve the mixing uniformity of the agent and the tailings water. A mixing and stirring device 9 is also included, and each drug delivery pipe 8 output end is connected to the mixing and stirring device 9 input end.

[0044] Among them, the dosage t is Where s is the water area at the dosing location, in m 2 ; h is the average water depth at the dosing location, in m; c1 is the dosage per unit water, in kg / m 3 ; v is the dosage of the dosing pump, in m 3 / kg; c2 is the actual raw material concentration in the stirring tank, in kg / m 3 .

[0045] Embodiment 1 In a copper mining enterprise, the tailings water smells bad, and the pH range is 5-6. Lime, polyaluminium chloride and sodium dichloroisocyanurate are used to deodorize the tailings water. The dosing ratio, dosage and deodorization effect of the three agents are shown in Table 1. After the treatment of the tailings water samples, the odor of the tailings water is significantly reduced. The smell of 5# and 6# water samples is mainly the smell of disinfectant, not the smell of tailings water.

[0046] Table 1 Deodorization effect of different agent ratios and dosages It can be seen from Table 1 that when the lime dosage is 0.1 kg / m 3 Up to 0.3 kg / m 3 , the dosage of polyaluminium chloride is 0.1kg / m 3 Up to 0.3 kg / m 3 The dosage of sodium dichloroisocyanurate is 0.1 kg / m 3 The deodorizing effect is best when

[0047] Embodiment 2 The above copper mining enterprise uses lime, polyaluminium chloride and sodium dichloroisocyanurate to deodorise the tailings water. The mass ratio of the three agents is 1:1:1, and the designed dosage is 0.1kg / m 3 , the dosing method is shore mixing-floating boat transportation dosing. Three dosing stirring tanks are set up near the tailings water of the tailings pond, which are used for mixing three kinds of reagents respectively. Water inlet pipes and water inlet pumps are set up to pump water from the tailings pond to dissolve the reagents. Dosing pumps and dosing pipes are set up. After the reagents are mixed evenly, they are discharged from their respective dosing pipes and pumped to the dosing position of the floating boat. The size of the mixing tank is ∅0.5m×1m, 4t of dosing is done every day, the dosing concentration is 10%, the dosing frequency is once every 10min, and 27.78kg of dosing is done each time. During stirring, the liquid level is kept at 2 / 3 of the height of the mixing tank. The three reagents are transported to the dosing position of the floating boat by the dosing pump. After the dosing, the stench of the tailings water at the location is significantly reduced, and the odor threshold is reduced from 12 to 1.5.

[0048] Embodiment 3 like Figure 1 , Figure 2 and Figure 3As shown, the difference between the third embodiment and the first embodiment is that, in step S240, the detection device automatically obtains the original odorous tailings water and the new tailings water and mixes them, and then automatically detects the gas concentration of the mixed tailings water. Specifically, the detection component includes a detection body and a detection tube component. Figure 2 This is a schematic diagram of the detection components when no sewage is discharged. Figure 3 The schematic diagram of the detection assembly when discharging sewage into the tailings pond is shown in FIG. Specifically, the detection tube assembly includes a first detection tube 10 , a horizontal detection tube 11 , and a second detection tube 12 connected in sequence, and the detection body is installed on the horizontal detection tube 11 .

[0049] The detection body includes a first detection body 13, which is cylindrical and has a conical lower end connected to and communicated with the horizontal detection tube 11. The upper end of the first detection body 13 is sequentially connected to a second detection body 14, a third detection body 15 and a measuring tube 16, and the third detection body 15 is conical. An odor gas detection sensor 17 is also installed on the measuring tube 16. The odor gas detection sensor 17 is mainly used to detect the concentration of sulfur dioxide and hydrogen sulfide gas.

[0050] A float 18 is arranged in the horizontal detection tube 11. The float 18 has a water-permeable hole. The upper side of the float 18 is connected to a blocking ball 19 for sealing the lower end of the first detection body 10 through a connecting rod. The blocking ball 19 can be made of a rubber ball. The upper end of the blocking ball 19 is connected to a blocking block 20 for sealing the measuring tube 16 through a connecting rod.

[0051] The highest liquid level of the first detection tube 10 is lower than the highest liquid level of the measuring tube 16, and the lowest liquid level of the second detection tube 12 is located in the middle of the horizontal detection tube 11; When the level detection tube 11 is filled with discharged sewage, the floating block 18 and the blocking ball 19 float up to connect the first detection body 13 with the level detection tube 11, and the blocking block 20 floats up to block the sewage in the measuring tube 16; When there is only a small amount of sewage in the horizontal detection tube 11, the floating block 18 and the blocking ball 19 move downward so that the blocking ball 19 blocks the lower end of the first detection body 13, and the blocking block 20 moves downward to discharge the sewage in the measuring tube 16 into the second detection body 14 and the third detection body 15.

[0052] In this scheme, when sewage is discharged to the tailings pond, the detection tube assembly is connected to the discharge pipe, the second detection tube 12 is filled with sewage, the floating block 18, the blocking ball 19 and the blocking block 20 float up synchronously, the blocking block 20 blocks the measuring tube so that the measuring tube 16 is filled with the sewage discharged for the first time, and the sewage in the second detection tube 12 enters the second detection body 14 and the third detection body 15 to replace the previous sewage with the sewage discharged for the second time.

[0053] When the second sewage is discharged, the floating block 18, the blocking ball 19 and the blocking block 20 move downward synchronously, so that the blocking ball 20 seals the lower side of the first detection body 13, and the first sewage in the measuring tube 16 enters the second detection body 14 and the third detection body 15 to mix, and a mixture of the first sewage and the second sewage is formed in the second detection body 14 and the third detection body 15.

[0054] Since the first sewage has gone through a discharge cycle, it contains microorganisms. When the microorganisms enter the second detection body 14 and the third detection body 15 and mix with the second sewage, the second sewage is inoculated, and the microorganisms will multiply and produce odor. The sewage newly entering the tailings pond has a small content of microorganisms, and the time for producing odor will be slower than that in the third detection body 15.

[0055] When the odor gas sensor 17 detects the generation of a large amount of odor (reducing the impact of the original tailings water odor), it means that a large amount of odor gas has begun to be generated in the third detection body 15. However, the time for the generation of odor gas in the tailings pond is relatively slow. When the odor gas sensor detects the generation of odor, it indicates that the tailings pond is about to generate odor gas. At this time, it is the best time to add deodorizing agents, which can reduce the amount of agents added and reduce the generation of odor.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A deodorizing agent for tailings water in a tailings pond, characterized in that: Including the following raw materials and mass proportions: 1 to 5 parts of lime, 1 to 5 parts of polyaluminium chloride, and 0.5 to 1 part of sodium dichloroisocyanurate.

2. The deodorizing agent for tailings water in a tailings pond according to claim 1, characterized in that: The mass concentration of deodorant added to tailings water is 0.01 kg / m 3 Up to 0.3 kg / m 3 .

3. A method for deodorizing tailings water in a tailings pond, applied to the deodorizing agent for tailings water in a tailings pond according to any one of claims 1 or 2, characterized in that: The following steps are involved: S100. The tailings water is introduced into the first stirring tank, the second stirring tank and the third stirring tank from the upper end through the water inlet pump; S200. When the water in the first stirring tank, the second stirring tank and the third stirring tank exceeds two-thirds of the volume, stirring is started, and lime, polyaluminium chloride and sodium dichloroisocyanurate are uniformly added to the first stirring tank, the second stirring tank and the third stirring tank, respectively, to form a reagent with a mass concentration of 5% to 20%; S300. Use a dosing pump to inject the agent prepared in step S200 from the bottom of the stirring tank into the tailings water for disinfection and deodorization.

4. The method for deodorizing tailings water in a tailings pond according to claim 3, characterized in that: In step S300, there is a floating boat in the tailings pond, and the output end of each dosing pump is connected to a drug delivery pipe, and the other end of the drug delivery pipe is installed on the floating boat. The floating boat drives the drug delivery pipe to move and spray the agent to various positions in the tailings pond.

5. The method for deodorizing tailings water in a tailings pond according to claim 4, characterized in that: In step S300, a mixing and stirring device is also included, and the output end of each drug delivery tube is connected to the mixing and stirring device.

6. The method for deodorizing tailings water in a tailings pond according to claim 3, characterized in that: The pH value of tailings water after adding chemicals is 9~11.

7. The method for deodorizing tailings water in a tailings pond according to claim 3, characterized in that: Before step S300, the method further includes: S210. Obtaining the smelly tailings water from the original tailings pond; S220. Obtain new tailings water discharged into the tailings pond most recently; S230. Mixing the odorous tailings water obtained in step S210 and the new tailings water obtained in step S220 to form mixed tailings water; S240. Detect the odor concentration of the mixed tailings water in step S230 through the detection component. When the odor concentration reaches the set value, transmit the dosing information to the dosing pump.

8. The method for deodorizing tailings water in a tailings pond according to claim 7, characterized in that: In step S240, the detection assembly includes a detection body and a detection tube assembly, the detection tube assembly includes a first detection tube, a horizontal detection tube, and a second detection tube connected in sequence, and the detection body is installed on the horizontal detection tube; The detection body comprises a first detection body, the lower end of which is conical and connected to and communicated with the horizontal detection tube, the upper end of which is sequentially connected to a second detection body, a third detection body and a measuring tube, and the third detection body is conical, and a malodorous gas detection sensor is also installed on the measuring tube; A floating block is arranged in the horizontal detection tube, and the floating block has a water permeable hole. The upper side of the floating block is connected to a blocking ball for blocking the lower end of the first detection body through a connecting rod, and the upper end of the blocking ball is connected to a blocking block for blocking the measuring tube through a connecting rod.

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