A tailings pond tailings water deodorizing agent and method of use thereof

Abstract

The present application relates to tailing water treatment technical field, especially to a kind of tailing pond tailing water deodorization reagent and its using method, tailing pond tailing water deodorization reagent includes the following raw materials and mass ratio: lime 1~5 parts, polyaluminium chloride 1~5 parts, sodium dichloroisocyanurate 0.5~1 part.The present application is conducive to quickly removing suspended solids in wastewater and part of organic matter, destroys the growth environment of odor-producing microorganisms.

Description

Technical Field

[0001] This invention relates to the field of tailings water treatment technology, and in particular to a deodorizing agent for tailings water in tailings ponds and its application method. Background Technology

[0002] Because the raw ore of non-ferrous metal mines has a high sulfur content, the flotation tailings water also contains a large amount of sulfate and other sulfur-containing substances. In addition, the addition of flotation reagents such as xanthate, black reagent, and pine oil during the flotation process will leave a lot of organic matter in the flotation wastewater. Oxidation in the tailings pond consumes oxygen in the water, creating an anaerobic environment. This leads to the proliferation of a large number of sulfate-reducing bacteria and other anaerobic bacteria. Under the action of biochemical reactions, malodorous gases such as hydrogen sulfide, methanethiol, dimethyl sulfide, dimethyl disulfide, and carbon disulfide are produced, causing the deterioration of the air in and around the tailings pond area.

[0003] Currently, methods for treating odorous gases generally include physical, chemical, and biological methods. Physical methods include masking, dilution-diffusion, and adsorption; chemical methods include combustion, oxidation, and absorption; and biological methods include biofilter deodorization and biotrickling filter deodorization. For example, a prior application (CN110681253A) discloses a method for treating methanethiol odor, which removes the odor through chlorine dioxide oxidation, UV high-efficiency photolysis purification, and UV-synergistic chlorine dioxide advanced oxidation. While this method can remove methanethiol odor, the process is complex, and the investment and operating costs are high. Another prior application (CN101591121A) discloses a method for treating xanthate wastewater using a combined membrane biodegradation and hydrogen peroxide oxidation process. This method employs a two-stage treatment process of membrane biodegradation and hydrogen peroxide oxidation to treat the xanthate wastewater, achieving COD and xanthate removal rates of over 90% and 99%, respectively. While this method effectively removes COD and xanthate, the membrane biological treatment method it employs has stringent requirements for water quality. The hydrogen peroxide used is a liquid hazardous chemical, posing significant transportation and storage requirements, and resulting in high treatment costs. For example, prior application CN104189933A discloses a deodorizing agent comprising deodorizing liquid A and deodorizing liquid B. Deodorizing liquid A, by mass percentage, comprises: 1%–10% bactericide; 2%–8% stabilizer; and 80%–97% water. Deodorizing liquid B comprises: 4%–12% gelling agent; 1%–10% pH adjuster; and 78%–95% water. The bactericide is selected from one of inorganic chlorine bactericides, organic chlorine bactericides, and organic sulfur bactericides; 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, seaweed gum, 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.

[0004] Because the source of odor pollution from tailings water is clear and singular, and considering the large volume and extensive area of ​​tailings water in tailings ponds, methods such as masking, dilution and diffusion, combustion, absorption, and biological treatment are unsuitable for the characteristics of this type of tailings water. Adsorption requires the establishment of adsorption devices and has a long treatment time. Oxidation can oxidize reducing substances in wastewater, and commonly used oxidants include sodium hypochlorite, bleaching powder, hydrogen peroxide, and potassium permanganate. However, the addition of sodium hypochlorite and bleaching powder introduces a large amount of chloride ions, which can adversely affect production indicators or system equipment when tailings water is reused in production. Potassium permanganate introduces heavy metal manganese ions, and hydrogen peroxide is a hazardous chemical, making transportation and storage quite complicated.

[0005] Therefore, those skilled in the art are dedicated to developing a tailings dam tailings water deodorizing agent and its application method, which can quickly remove suspended solids and some organic matter from wastewater and destroy the growth environment of odor-producing microorganisms. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a tailings dam tailings water deodorizing agent and its application method, which can quickly remove the suspension and some organic matter in the wastewater and destroy the growth environment of odor-producing microorganisms.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0008] A tailings dam tailings water deodorizing agent, comprising the following raw materials and their mass ratios:

[0009] 1 to 5 parts lime, 1 to 5 parts polyaluminum chloride, and 0.5 to 1 part sodium dichloroisocyanurate.

[0010] The beneficial effects of adopting the above scheme are as follows: lime can neutralize acidic wastewater, increase the pH value of the water body, and combine with phosphorus in the wastewater through chemical reaction to form insoluble mineral precipitates, thereby achieving the effect of phosphorus removal and reducing the phosphorus load on the water body. The addition of lime changes the acid-base balance of the water body and reacts with colloidal particles and metal ions in suspended solids to generate precipitates with a high specific gravity, which promotes the rapid settling and fixation of suspended solids, thereby achieving the removal of suspended solids. The alkaline properties of lime can destroy the cell structure and metabolic processes of microorganisms, thereby achieving the effect of killing microorganisms. It can also change the activity and stability of toxic substances by adjusting the oxidation-reduction potential of the water body, promoting the oxidation, reduction and precipitation of certain toxic substances, and reducing their degree of harm to the aquatic environment.

[0011] Polyaluminum chloride (PAC) is used as a coagulant to quickly coagulate suspended solids and colloidal substances in wastewater, forming larger flocs that settle down, removing suspended solids, colloids, algae and other impurities from the water, thereby purifying the water quality. At the same time, PAC can remove bacteria, odors, fluoride, aluminum, chromium, oil, turbidity, heavy metal salts and radioactive pollutants.

[0012] Sodium dichloroisocyanurate has a high effective chlorine content and strong disinfection and sterilization effects. It keeps the water clear and bright, removes adhering substances, and can quickly kill various bacteria, viruses and other microorganisms, eliminate pollutant molecules such as hydrogen sulfide in the water, and eliminate their color and odor.

[0013] By mixing the three raw materials in an appropriate ratio, it has multiple functions, including rapidly removing suspended solids and sulfate ions from wastewater, oxidizing hydrogen sulfide and some organic matter, disinfecting microorganisms and destroying the growth environment of odor-producing microorganisms. The deodorization effect is significant, the method of application is simple, the engineering modification is small, and the investment and operating costs are low. It has great reference value for the deodorization treatment of tailings water in non-ferrous metal mines.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the mass concentration of the deodorizing agent added to the tailings water is 0.01 kg / m³. 3 Up to 0.3 kg / m 3 .

[0016] The beneficial effects of adopting the above-mentioned further solutions are: the appropriate concentration of deodorizing agent improves the deodorization and disinfection effect of tailings water, while avoiding excessive chloride ion content.

[0017] A method for deodorizing tailings water in tailings ponds, using the tailings water deodorizing agent described above, includes the following steps:

[0018] S100. The tailings water is pumped from the top into the first mixing tank, the second mixing tank and the third mixing tank respectively;

[0019] S200. When the water in the first, second, and third mixing tanks exceeds two-thirds of the volume, stirring begins, and lime, polyaluminum chloride, and sodium dichloroisocyanurate are uniformly added to the first, second, and third mixing tanks respectively to prepare a reagent with a mass concentration of 5% to 20%.

[0020] S300. The reagent prepared in step S200 is introduced into the tailings water from the bottom of the mixing tank through a dosing pump for disinfection and deodorization.

[0021] The beneficial effects of adopting the above-mentioned further scheme are as follows: Since the wastewater in the tailings pond is discharged periodically, when the wastewater develops an odor, the chemicals are added. The various chemicals are first dissolved and prepared to a suitable concentration before being introduced into the tailings water, which increases the dissolution rate of the chemicals and improves the deodorization and disinfection of the tailings water.

[0022] Furthermore, in step S300, the tailings dam has a floating vessel, and each dosing pump output is connected to a dosing pipe. The other end of the dosing pipe is installed on the floating vessel, and the floating vessel moves the dosing pipe to spray the agent to various locations in the tailings dam.

[0023] The beneficial effects of adopting the above-mentioned further scheme are: the floating vessel operates during centralized chemical dosing. Since the new sewage has no odor, chemical dosing is only done after the tailings water develops an odor. The floating vessel sprays the appropriate concentration of deodorizing agent at various locations in the tailings pond, so that the deodorizing agent and tailings water are evenly mixed, thereby improving the efficiency of deodorization and disinfection of tailings water.

[0024] Furthermore, step S300 also includes a mixing and stirring device, with the output end of each drug delivery tube connected to the mixing and stirring device.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the mixing and stirring device is conducive to mixing multiple raw materials evenly.

[0026] Furthermore, the pH value of the tailings water after chemical treatment is 9-11.

[0027] The beneficial effects of adopting the above-mentioned further solutions are: the tailings water has an alkaline pH value, which destroys the living environment of microorganisms and improves the efficiency of tailings water disinfection.

[0028] Furthermore, the dosage t in step S300 is...

[0029]

[0030] Where s represents the water area at the dosing location, in meters (m²). 2 ;

[0031] h represents the average water depth at the dosing location, in meters (m).

[0032] c1 represents the dosage per unit water volume, expressed in kg / m³. 3 ;

[0033] v represents the dosage of the dosing pump, in meters (m³). 3 / kg

[0034] c2 represents the actual concentration of the raw material in the mixing tank, in kg / m³. 3 .

[0035] The beneficial effects of adopting the above-mentioned further scheme are: by precisely controlling the amount of chemicals added at one time, the time of each addition is inversely proportional to the amount of chemicals added and directly proportional to the area and depth of the water body, so that the deodorizing agent in the tailings water is maintained at an appropriate concentration.

[0036] Furthermore, step S300 also includes:

[0037] S210. Obtain the foul-smelling tailings water from the original tailings pond;

[0038] S220. Obtain the fresh tailings water from the most recent discharge into the tailings dam;

[0039] S230. Mix the odorous tailings water obtained in step S210 with the new tailings water obtained in step S220 to form mixed tailings water;

[0040] S240. The odor concentration of the mixed tailings water in step S230 is detected by the detection component. When the odor concentration reaches the set value, the dosing information is transmitted to the dosing pump.

[0041] The beneficial effects of adopting the above-mentioned further solution are as follows: Since tailings wastewater is discharged into the tailings dam periodically and in one go, the wastewater initially discharged into the tailings dam has no odor. However, after the wastewater has been stored for a period of time, microorganisms will decompose the substances in the wastewater, forming odors that pollute the environment. If the tailings dam deodorizing agent is discharged into the tailings dam in advance, the discharge of wastewater will cause the premature decomposition of the deodorizing agent (mainly chloride ion volatilization), reducing the subsequent deodorizing effect of the tailings dam. Furthermore, the wastewater in the tailings dam has a complex composition, containing heavy metals, ammonia nitrogen, cyanide, flotation reagents and their decomposition products, etc. During the wastewater treatment process, it is necessary to first undergo flocculation and sedimentation before adding deodorizing agents. This allows the agents to exert their best effect while reducing the consumption of deodorizing agents. Based on this, the optimal time to add deodorizing agents to the tailings dam is when a large amount of odor is about to be generated in the tailings dam, which can reduce the consumption of agents and reduce the generation of odors.

[0042] Based on this, the odorous tailings water from the existing tailings pond is mixed with the most recently discharged tailings water to form mixed tailings water. This mixture is then used for inoculation, ensuring that the mixed tailings water contains microorganisms, and the mixing of tailings water promotes rapid microbial reproduction. When the detection component detects a large amount of odor generated exceeding the set value, it indicates that the mixed tailings water has begun to produce a large amount of malodorous gas. However, the time it takes for the new tailings water in the tailings pond to produce malodorous gas is relatively slow. When a large amount of odor is detected in the mixed tailings water, it indicates that malodorous gas is about to be generated in the tailings pond. At this point, adding deodorizing agents is the optimal time.

[0043] Furthermore, 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. The detection body is mounted on the horizontal detection tube.

[0044] The detection body includes a first detection body, the lower end of which is conical and connected to and communicates with the horizontal detection tube. The upper end of the first detection body is sequentially connected to a second detection body, a third detection body, and a measuring tube, and the third detection body is conical. An odor gas detection sensor is also installed on the measuring tube.

[0045] A float is provided inside the horizontal detection tube. The float has a water-permeable hole. A plug ball for sealing the lower end of the first detection body is connected to the upper side of the float via a connecting rod. A plug block for sealing the measuring tube is connected to the upper end of the plug ball via a connecting rod.

[0046] The beneficial effect of adopting the above-mentioned further solution is that when the horizontal detection tube is filled with discharged sewage, the float and the blocking ball float up, making the first detection body communicate with the horizontal detection tube, and causing the blocking block to float up and block the sewage in the measuring tube;

[0047] When there is only a small amount of sewage in the horizontal detection tube, the float and the blocking ball move downwards, causing the blocking ball to block the lower end of the first detection body, and causing the blocking block to move downwards to discharge the sewage in the measuring tube into the second and third detection bodies.

[0048] For the reasons mentioned above, the detection device automatically acquires the original odorous tailings water and the new tailings water, mixes them, and then automatically detects the gas concentration of the mixed tailings water. Specifically, when the wastewater is discharged into the tailings dam, the detection pipe assembly is connected to the discharge pipe. The second detection pipe is filled with wastewater, and the float, the blocking ball, and the blocking block rise synchronously. The blocking block seals the measuring pipe, causing the measuring pipe to be filled with the previously discharged wastewater. The wastewater in the second detection pipe enters the second and third detection bodies, replacing the previous wastewater with new wastewater.

[0049] After the sewage discharge is completed, the float, the plug, and the plug move down synchronously, so that the plug seals the lower side of the first detection body. The sewage from the previous discharge in the measuring tube enters the second and third detection bodies and mixes with it, forming a mixture of the previous sewage and the current sewage in the second and third detection bodies.

[0050] Since the previous wastewater has already undergone a discharge cycle, it contains microorganisms. When these microorganisms enter the second and third detection bodies and mix with the new wastewater, the new wastewater is inoculated. The microorganisms will multiply and produce odors. However, the wastewater newly entering the tailings pond contains fewer microorganisms, and the time it takes for it to produce odors is relatively slower compared to the third detection body.

[0051] When the odor sensor detects the generation of odor, it indicates that a large amount of odorous gas has begun to be produced in the third detection body. However, the generation of odorous gas in tailings ponds is relatively slow. When the odor sensor detects the generation of odor, it indicates that odorous gas is about to be generated in the tailings pond. At this time, adding deodorizing agents is the best time. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the deodorization device according to a specific embodiment of the present invention;

[0053] Figure 2 This is a schematic diagram of the detection component structure in Embodiment 3 of the present invention. Figure 1 ;

[0054] Figure 3 This is a schematic diagram of the detection component structure in Embodiment 3 of the present invention. Figure 2 .

[0055] The attached diagram lists the components represented by each number as follows:

[0056] 1. Inlet pump; 2. First mixing tank; 3. Second mixing tank; 4. Third mixing tank; 5. Tailings dam; 6. Dosing pump; 7. Floating vessel; 8. Dosing pipe; 9. Mixing device; 10. First detection pipe; 11. Horizontal detection pipe; 12. Second detection pipe; 13. First detection body; 14. Second detection body; 15. Third detection body; 16. Measuring tube; 17. Odor gas detection sensor; 18. Float; 19. Blocking ball; 20. Blocking block. Detailed Implementation

[0057] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0058] In the description of this invention, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "inner," "outer," "circumferential," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] A tailings dam tailings water deodorizing agent, comprising the following raw materials and their mass ratios:

[0062] The deodorizing agent consists of 1-5 parts lime, 1-5 parts polyaluminum chloride, and 0.5-1 part sodium dichloroisocyanurate. The final concentration of the deodorizing agent after addition to the tailings water is 0.01 kg / m³. 3 Up to 0.3 kg / m 3 .

[0063] like Figure 1 As shown, a method for deodorizing tailings water in a tailings dam, using the tailings water deodorizing agent described above, includes the following steps:

[0064] S100. The tailings water is fed into the first mixing tank 2, the second mixing tank 3, and the third mixing tank 4 from the top through the inlet pump 1. Specifically, the tailings water will be discharged into the tailings dam 5, and the inlet pump 1 will pump the tailings water in the tailings dam 5 into the upper part of the first mixing tank 2, the second mixing tank 3, and the third mixing tank 4.

[0065] S200. When the water in the first mixing tank 2, the second mixing tank 3, and the third mixing tank 4 exceeds two-thirds of the volume, stirring is started to reduce subsequent precipitation of the reagents. Lime, polyaluminum chloride, and sodium dichloroisocyanurate are then uniformly added to the first mixing tank 2, the second mixing tank 3, and the third mixing tank 4 respectively to prepare a reagent with a mass concentration of 5% to 20%.

[0066] Also includes:

[0067] S210. Obtain the foul-smelling tailings water from the original tailings pond;

[0068] S220. Obtain the fresh tailings water from the most recent discharge into the tailings dam;

[0069] S230. Mix the odorous tailings water obtained in step S210 with the new tailings water obtained in step S220 to form mixed tailings water;

[0070] S240. The odor concentration of the mixed tailings water in step S230 is detected by the detection component. When the odor concentration reaches the set value, the dosing information is transmitted to the dosing pump 6.

[0071] When the detection component detects a large amount of odor in the mixed tailings water, it indicates that odor is about to develop in the new tailings water in the tailings dam. The dosing pump 6 then adds deodorizing agent to the new tailings water in the tailings dam based on the dosing information transmitted by the detection component.

[0072] S300. The reagent prepared in step S200 is introduced into the tailings water from the bottom of the mixing tank through the dosing pump 6 for disinfection and deodorization. The pH value of the tailings water after dosing is 9~11.

[0073] Specifically, the tailings dam includes a floating hull 7, with each dosing pump 6 connected to a dosing pipe 8 at its output end. The other end of the dosing pipe 8 is mounted on the floating hull 7. The floating hull 7 moves the dosing pipe 8 to spray the chemicals to various locations within the tailings dam 5, improving the uniformity of mixing between the chemicals and the tailings water. A mixing and stirring device 9 is also included, with the output end of each dosing pipe 8 connected to the input of the mixing and stirring device 9.

[0074] Among them, the dosage t is

[0075]

[0076] Where s represents the water area at the dosing location, in meters (m²). 2 ;

[0077] h represents the average water depth at the dosing location, in meters (m).

[0078] c1 represents the dosage per unit water volume, expressed in kg / m³. 3 ;

[0079] v represents the dosage of the dosing pump, in meters (m³). 3 / kg

[0080] c2 represents the actual concentration of the raw material in the mixing tank, in kg / m³. 3 .

[0081] Example 1

[0082] A copper mine had foul-smelling tailings water with a pH range of 5-6. The tailings water was deodorized using lime, polyaluminum chloride, and sodium dichloroisocyanurate. The dosage ratios, amounts, and deodorization effects of the three agents are shown in Table 1. After treatment, the odor of the tailings water samples was significantly reduced. The odor of samples #5 and #6 was mainly that of disinfectant, not the foul smell of tailings water.

[0083]

[0084] Table 1. Deodorization effect of different drug ratios and dosages

[0085] Table 1 shows that when the lime dosage is 0.1 kg / m³,3 Up to 0.3 kg / m 3 The dosage of polyaluminum chloride is 0.1 kg / m³. 3 Up to 0.3 kg / m 3 The dosage of sodium dichloroisocyanurate is 0.1 kg / m³. 3 The deodorizing effect is best at this time.

[0086] Example 2

[0087] The aforementioned copper mining company uses lime, polyaluminum chloride, and sodium dichloroisocyanurate to deodorize tailings water, with a mass ratio of 1:1:1 and a designed dosage of 0.1 kg / m³. 3 The dosing method is shore-side mixing followed by floating vessel delivery. Three mixing tanks are installed near the tailings dam edge, each for mixing three different chemicals. Each tank has an inlet pipe and pump to draw water from the tailings dam to dissolve the chemicals. Dosing pumps and pipes are then installed, and the chemicals, after being thoroughly mixed, are discharged from their respective pipes and pumped into the floating vessel's dosing position. The mixing tanks are 0.5m x 1m in size, with a daily dosing capacity of 4 tons at a 10% concentration, occurring every 10 minutes, with each dosing session using 27.78 kg of chemicals. During mixing, the liquid level is maintained at 2 / 3 of the tank's height. The three chemicals are delivered to the floating vessel's dosing position via the pumps. After dosing, the odor in the tailings dam water at that location is significantly reduced, with the odor threshold decreasing from 12 to 1.5.

[0088] Example 3

[0089] like Figure 1 , Figure 2 and Figure 3 As shown, the difference between Embodiment 3 and Embodiment 1 lies only in that, in step S240, the detection device automatically acquires the original odorous tailings water and the new tailings water, 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 assembly. Figure 2 This is a schematic diagram of the detection components when no wastewater is being discharged. Figure 3 This is a schematic diagram of a detection assembly for discharging wastewater into a tailings dam. Specifically, the detection pipe assembly includes a first detection pipe 10, a horizontal detection pipe 11, and a second detection pipe 12 connected in sequence, with the detection body mounted on the horizontal detection pipe 11.

[0090] The detection body includes a first detection body 13, which is cylindrical with a conical lower end connected to and communicating with a horizontal detection tube 11. A second detection body 14, a third detection body 15, and a measuring tube 16 are sequentially connected to the upper end of the first detection body 13, with the third detection body 15 being 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 gases.

[0091] A float 18 is provided inside the horizontal detection tube 11. The float 18 has water-permeable holes. A blocking ball 19 for sealing the lower end of the first detection body 10 is connected to the upper side of the float 18 via a connecting rod. The blocking ball 19 can be made of rubber. A blocking block 20 for sealing the measuring tube 16 is connected to the upper end of the blocking ball 19 via a connecting rod.

[0092] The highest liquid level in the first detection tube 10 is lower than the highest liquid level in the measuring tube 16, and the lowest liquid level in the second detection tube 12 is located in the middle of the horizontal detection tube 11.

[0093] When the horizontal detection tube 11 is filled with discharged sewage, the float 18 and the plug 19 float up, making the first detection body 13 communicate with the horizontal detection tube 11, and causing the plug 20 to float up and block the sewage in the measuring tube 16.

[0094] When there is only a small amount of sewage in the horizontal detection tube 11, the float 18 and the blocking ball 19 move downward, causing the blocking ball 19 to block the lower end of the first detection body 13, and causing the blocking block 20 to move downward to discharge the sewage in the measuring tube 16 into the second detection body 14 and the third detection body 15.

[0095] In this scheme, when sewage is discharged into the tailings dam, the detection pipe assembly is connected to the discharge pipe. The second detection pipe 12 is filled with sewage. The float 18, the blocking ball 19 and the blocking block 20 float up simultaneously. The blocking block 20 blocks the measuring pipe, so that the measuring pipe 16 is filled with the sewage discharged for the first time. The sewage in the second detection pipe 12 enters the second detection body 14 and the third detection body 15 to replace the sewage discharged for the second time.

[0096] After the second sewage discharge is completed, the float 18, the plug ball 19 and the plug 20 move down synchronously, so that the plug 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, forming a mixture of the first sewage and the second sewage in the second detection body 14 and the third detection body 15.

[0097] Since the first wastewater has already undergone a discharge cycle, it contains microorganisms. When the microorganisms enter the second and third detection bodies 14 and mix with the second wastewater, the second wastewater is inoculated. The microorganisms will multiply and produce odor. The newly entered wastewater in the tailings pond has a lower microbial content, and the time it takes for it to produce odor is slower than that in the third detection body 15.

[0098] When the odor gas sensor 17 detects a large amount of odor (reducing the impact of the original tailings water odor), it indicates that a large amount of odorous gas has begun to be generated in the third detection body 15. However, the generation of odorous gas in the tailings pond is relatively slow. When the odor gas sensor detects the generation of odor, it indicates that odorous gas is about to be generated in the tailings pond. At this time, adding deodorizing agents is the best time, which can reduce the amount of agents used and reduce the generation of odor.

[0099] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0100] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for using a deodorizing agent for tailings water in a tailings dam, characterized in that, Includes the following steps: S100. The tailings water is pumped from the top into the first mixing tank, the second mixing tank and the third mixing tank respectively; S200. When the water in the first, second, and third mixing tanks exceeds two-thirds of the volume, stirring begins, and lime, polyaluminum chloride, and sodium dichloroisocyanurate are uniformly added to the first, second, and third mixing tanks respectively to prepare a reagent with a mass concentration of 5% to 20%. S300. The reagent prepared in step S200 is introduced into the tailings water from the bottom of the mixing tank using a dosing pump for disinfection and deodorization; step S300 also includes the following steps before: S210. Obtain the foul-smelling tailings water from the original tailings pond; S220. Obtain the fresh tailings water from the most recent discharge into the tailings dam; S230. Mix the odorous tailings water obtained in step S210 with the new tailings water obtained in step S220 to form mixed tailings water; S240. The odor concentration of the mixed tailings water in step S230 is detected by the detection component. When the odor concentration reaches the set value, the dosing information is transmitted to the dosing pump. The detection component 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. The detection body is installed on the horizontal detection tube. The detection body includes a first detection body, the lower end of which is conical and connected to and communicates with the horizontal detection tube. The upper end of the first detection body is sequentially connected to a second detection body, a third detection body, and a measuring tube, and the third detection body is conical. An odor gas detection sensor is also installed on the measuring tube. A float is provided inside the horizontal detection tube. The float has a water-permeable hole. A plug ball for sealing the lower end of the first detection body is connected to the upper side of the float via a connecting rod. A plug block for sealing the measuring tube is connected to the upper end of the plug ball via a connecting rod.

2. The method of using the tailings dam tailings water deodorizing agent according to claim 1, characterized in that: In step S300, the tailings dam has a floating vessel, and each dosing pump output is connected to a delivery pipe. The other end of the delivery pipe is installed on the floating vessel. The floating vessel moves the delivery pipe to spray the agent to various locations in the tailings dam.

3. The method of using the tailings dam tailings water deodorizing agent according to claim 2, characterized in that: Step S300 also includes a mixing and stirring device, with the output end of each drug delivery tube connected to the mixing and stirring device.

4. The method of using the tailings dam tailings water deodorizing agent according to claim 3, characterized in that: The pH value of tailings water after chemical treatment is 9-11.

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