Aquaculture wastewater treatment agent and aquaculture wastewater treatment process

Abstract

The invention relates to the technical field of wastewater treatment, and in particular to an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process. The invention comprises the following steps: step 1: using a treatment device to perform oscillation filtration on wastewater to obtain wastewater supernatant; step 2: introducing ozone into the wastewater supernatant filtered in step 1 to kill microorganisms in the wastewater supernatant, filtering the wastewater supernatant again to remove precipitates therein; step 3: the treatment device adds a corresponding volume of treatment agent into the wastewater supernatant according to the volume of the wastewater supernatant, and continuously oscillates to promote a mixed reaction between the wastewater supernatant and the treatment agent; and step 4: filtering the wastewater supernatant after the mixed reaction in step 3 to remove precipitates therein to complete the treatment of aquaculture wastewater. The invention is used for simplifying wastewater treatment steps and reducing the requirements of wastewater treatment on operation sites.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process. Background Art

[0002] Aquaculture is one of the important sources of food in the world. With its rapid development, the problem of aquaculture wastewater discharge has become increasingly prominent. Wastewater generated during the breeding process contains pollutants such as leftover bait, feces, and chemicals. If it is discharged directly without treatment, it will cause serious pollution to the water environment, causing eutrophication, pathogen transmission and other problems, destroying the ecological balance and endangering human health. Therefore, the research and development and application of aquaculture wastewater treatment technology has become the key to the sustainable development of the industry.

[0003] The main characteristics of aquaculture wastewater include high organic matter content, high nitrogen and phosphorus content, and pathogen and antibiotic residues. Leftover bait and feces lead to high organic matter concentrations in wastewater, while nitrogen and phosphorus in feed are not fully absorbed and are discharged with wastewater, further increasing the risk of eutrophication of water bodies. In addition, antibiotics and pathogens used in the breeding process may remain in the wastewater, increasing environmental and health risks. These characteristics make the treatment of aquaculture wastewater difficult and require the comprehensive use of multiple technical means.

[0004] In order to reduce the impact of aquaculture on the environment, wastewater treatment technology is particularly important. Through effective treatment, the concentration of pollutants in wastewater can be significantly reduced, the damage to water bodies can be reduced, and at the same time, the recycling of water resources can be achieved, and the sustainability of the aquaculture industry can be improved. At present, the commonly used aquaculture wastewater treatment technologies mainly include physical treatment, biological treatment, chemical treatment and ecological treatment.

[0005] Physical treatment technology is the first step in wastewater treatment, mainly removing suspended matter and large organic particles in wastewater through filtration, sedimentation and other methods. For example, screen filtration can remove larger solid particles, while sedimentation tanks use gravity to settle suspended matter, thereby reducing the solid load in wastewater. These technologies are simple to operate and low in cost, but they can usually only be used as pretreatment methods and cannot completely remove soluble pollutants.

[0006] Chemical treatment technology mainly removes pollutants from wastewater by adding chemical agents. For example, coagulation and sedimentation technology adds coagulants to aggregate fine particles into large particles, which is convenient for precipitation and separation; oxidation technology uses strong oxidants such as ozone and hydrogen peroxide to decompose organic matter and kill pathogens. Chemical treatment technology has significant effects, but it may cause secondary pollution and has high operating costs. Therefore, it is usually used as an auxiliary means in combination with other technologies.

[0007] Existing chemical or physical treatment technologies often require a high area of ​​operating site due to the complicated procedures. Summary of the invention

[0008] In order to solve the above problems, the present invention provides an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process, which are used to simplify the wastewater treatment steps and reduce the requirements of the wastewater treatment on the operation site.

[0009] In order to achieve the above object, the technical solution of the present invention is as follows: a process for treating aquaculture wastewater, comprising:

[0010] Step 1: Use a treatment device to perform shock filtration on the wastewater to obtain the wastewater supernatant;

[0011] Step 2: introducing ozone into the wastewater supernatant after filtering in step 1 to kill microorganisms in the wastewater supernatant, and filtering the wastewater supernatant again to remove the precipitate therein;

[0012] Step 3: The treatment device adds a corresponding volume of treatment agent into the wastewater supernatant according to the volume of the wastewater supernatant, and continuously shakes to promote the mixing reaction between the wastewater supernatant and the treatment agent;

[0013] Step 4: filtering the wastewater supernatant after the mixed reaction in step 3 to remove the precipitate therein, thereby completing the treatment of the aquaculture wastewater;

[0014] The treatment device includes a treatment pool, in which an oscillating component and a filtering component are arranged. The oscillating component is used to generate oscillations, and the oscillations are transmitted to the wastewater to make the wastewater level fluctuate. The filtering component includes a plurality of filter screens, and the mesh size of the filter screens decreases from top to bottom. The filter screens divide the treatment pool into a plurality of chambers, and the output ends of the chambers are each provided with a receiving component, and the receiving component is used to receive the wastewater in the corresponding chamber.

[0015] The treatment device also includes an ozone generator, and the output end of the ozone generator is connected to the treatment tank. A solenoid valve is provided at the connection point between the ozone generator and the treatment tank. The ozone generator is used to generate ozone, which is used to disinfect wastewater and drive the movement of wastewater.

[0016] Furthermore, a screen is provided at the output end of the chamber, and the mesh size of the screen is larger than that of the upper filter and smaller than that of the lower filter.

[0017] Furthermore, the oscillation component includes a sonic vibrator, which is used to generate oscillations, and the oscillations are transmitted to the wastewater to cause fluctuations in the wastewater liquid level.

[0018] Furthermore, the receiving component includes a reaction pool, the output end of the chamber is connected to the reaction pool, and a throttle valve is provided at the connection point between the chamber and the reaction pool.

[0019] Furthermore, a drug administration component is provided in the reaction pool, and the drug administration component includes a detection chamber, which is connected to the reaction pool, a drug storage box is provided above the detection chamber, the bottom wall of the drug storage box is higher than the reaction pool, the output end of the drug storage box is connected to a channel, and the output end of the channel is connected to the reaction pool, a placement groove is provided in the side wall of the detection chamber away from the reaction pool, a trigger tube is slidably fitted in the placement groove, the trigger tube passes through the channel and closes the channel, holes are symmetrically provided on the trigger tube, the holes are used to keep the drug storage box connected to the reaction pool, a first piston and a second piston are arranged in sequence on the inner side wall of the trigger tube from bottom to top, and the first piston and the second piston are both slidably fitted with the inner side wall of the trigger tube, a test gas is provided under the first piston, a test liquid is provided between the first piston and the second piston, and the second piston is also used to close the hole.

[0020] Furthermore, in step 1, before the wastewater is introduced into the treatment device, the wastewater is introduced into an activated sludge tank, and the organic matter and nutrients in the wastewater are decomposed by the microorganisms in the activated sludge tank.

[0021] Furthermore, an adsorption chamber is provided in the screen, the adsorption chamber is communicated with the outside, and activated carbon is provided in the adsorption chamber.

[0022] Furthermore, a through groove is provided on a side wall of the placement groove away from the detection cavity, and the through groove is used to expose the position of the trigger tube.

[0023] Furthermore, a plurality of heat-conducting sheets are provided on one side wall of the placement slot close to the detection cavity, and the heat-conducting sheets are evenly arranged vertically, and a heat-insulating layer is provided on the side where the heat-conducting sheets are close to each other.

[0024] Furthermore, the raw materials of the treatment agent used in the above-mentioned aquaculture wastewater treatment process include polyvinyl amide, aluminum sulfate, potassium permanganate and ethylenediaminetetraacetic acid;

[0025] The treatment agent is a plurality of spherical particles, which are composed of a core made of ethylenediaminetetraacetic acid, a middle layer made of polyvinyl amide and aluminum sulfate, and an outer layer made of potassium permanganate from the inside to the outside, and an isolation layer is provided between the core and the middle layer and between the middle layer and the outer layer, and the isolation layer is made of a water-soluble material;

[0026] The steps for making the middle layer are: selecting citric acid, sodium bicarbonate, polyethylene glycol, microcrystalline cellulose and aluminum sulfate, mixing and sieving, pressing the mixed powder into pills, air-drying the pills, and evenly placing them in polyvinyl amide powder to complete the making of the middle layer.

[0027] Technical principles and beneficial effects of the above scheme:

[0028] This scheme achieves the effect of filtering and separating the wastewater by shaking it and simultaneously obtaining the supernatant liquid of the wastewater. At the same time, ozone gas is used to guide the separation of the supernatant liquid of the wastewater from the lower impurities, and the supernatant liquid of the wastewater is disinfected and sterilized simultaneously. Compared with the existing technology, this scheme separates impurities in the wastewater by ozone gas, which can to a certain extent avoid the problem of impurities in the wastewater clogging the filter net and causing weak filtering effect. At the same time, since this scheme can carry out multiple steps in the wastewater treatment process simultaneously, it greatly reduces the space occupied by the wastewater treatment equipment in the traditional wastewater treatment process, reduces the requirements for the operation site area of ​​wastewater treatment, and enables this scheme to meet the needs of small and medium-sized aquaculture farmers, which is conducive to the later promotion and application of the scheme.

[0029] The design of the treatment agent in this solution, through the design of multiple layers of chemical agents, allows this solution to complete multiple steps of wastewater treatment with only one delivery. At the same time, the design of the isolation layer in this solution also allows the operator to adjust the release time interval of the middle layer or core drug by adjusting the material and thickness of the isolation layer, thereby achieving precise delivery of the agent. Compared with the existing technology, this solution is convenient and fast, greatly reducing the operator's operating steps, simplifying the wastewater treatment process, and improving wastewater treatment efficiency.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of an embodiment of an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process of the present invention;

[0032] Figure 2 It is an axonometric diagram of a treatment device of an embodiment of an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process of the present invention;

[0033] Figure 3 A top view of a treatment device of an embodiment of an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process of the present invention;

[0034] Figure 4 for Figure 3 Middle AA section;

[0035] Figure 5 It is a cross-sectional schematic diagram of a treatment tank in a treatment device of an embodiment of an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process of the present invention;

[0036] Figure 6 for Figure 4 The enlarged view of point B in the middle;

[0037] Figure 7 for Figure 4 Enlarged view of point C in the middle;

[0038] Figure 8 It is a schematic cross-sectional view of an aquaculture wastewater treatment agent and an aquaculture wastewater treatment process embodiment of the present invention.

[0039] The figure marks in the drawings of the specification include: 1. treatment tank; 11. chamber; 12. filter; 2. reaction tank; 3. detection chamber; 4. channel; 41. rubber pad; 5. medicine storage box; 6. trigger tube; 61. placement groove; 62. through groove; 63. ether; 64. first piston; 65. insulation layer; 66. heat conductive sheet; 67. test liquid; 68. second piston; 7. screen; 71. activated carbon; 8. treatment agent; 81. potassium permanganate; 82. isolation layer; 83. polyvinyl amide; 84. aluminum sulfate; 85. ethylenediaminetetraacetic acid. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The following is further described in detail through specific implementation methods:

[0044] Embodiment 1:

[0045] As attached Figure 1 -Attached Figure 8 Shown: A process for treating aquaculture wastewater, comprising:

[0046] Step 1: Use a treatment device to perform shock filtration on the wastewater to obtain the wastewater supernatant;

[0047] Step 2: introducing ozone into the wastewater supernatant after filtering in step 1 to kill microorganisms in the wastewater supernatant, and filtering the wastewater supernatant again to remove the precipitate therein;

[0048] Step 3: The treatment device adds a corresponding volume of treatment agent 8 into the wastewater supernatant according to the volume of the wastewater supernatant, and continuously shakes to promote the mixing reaction between the wastewater supernatant and the treatment agent 8;

[0049] Step 4: filtering the wastewater supernatant after the mixed reaction in step 3 to remove the precipitate therein, thereby completing the treatment of the aquaculture wastewater;

[0050] The treatment device includes a treatment pool 1, in which an oscillation component and a filtering component are arranged. The oscillation component is used to generate oscillations, which are transmitted to the wastewater to cause the wastewater level to fluctuate. The oscillation component includes an acoustic wave vibrator, which is used to generate oscillations, which are transmitted to the wastewater to cause the wastewater liquid level to fluctuate. The acoustic wave vibrator is fixedly connected to the bottom wall of the reaction pool 2 by bolts.

[0051] The filter assembly includes a plurality of filter screens 12, and the mesh number of the filter screens 12 decreases from top to bottom. The filter screens 12 divide the treatment pool 1 into a plurality of chambers 11, and the output ends of the chambers 11 are provided with receiving components, and the receiving components are used to receive the wastewater in the corresponding chambers 11. The receiving components include a reaction pool 2, and the output ends of the chambers 11 are connected to the reaction pool 2, and the connection points between the chambers 11 and the reaction pool 2 are provided with throttle valves, and the output ends of the chambers 11 are provided with screens 7, and the mesh number of the screens 7 is between the upper and lower filter screens 12, and an adsorption chamber is provided in the screen 7, and the adsorption chamber is connected to the outside, and activated carbon 71 is provided in the adsorption chamber;

[0052] The treatment device also includes an ozone generator (not shown in the figure), and the output end of the ozone generator is connected to the bottom wall of the treatment tank 1 and the input ends of all chambers 11, and a water-gas separation membrane is provided at the connection between the ozone generator and the bottom wall of the treatment tank 1, and a solenoid valve is provided at the connection between the ozone generator and the treatment tank 1. The ozone generator is used to generate ozone, and the ozone is used to disinfect the wastewater and drive the wastewater to move.

[0053] The reaction pool 2 is provided with a drug administration component, which includes a detection chamber 3, which is connected to the reaction pool 2, a drug storage box 5 is provided above the detection chamber 3, the bottom wall of the drug storage box 5 is higher than the reaction pool 2, the output end of the drug storage box 5 is connected with a channel 4, and the output end of the channel 4 is connected with the reaction pool 2, a placement groove 61 is opened in the side wall of the detection chamber 3 away from the reaction pool 2, a trigger tube 6 is slidably fitted in the placement groove 61, the trigger tube 6 passes through the channel 4 and closes the channel 4, and a rubber pad 41 is bonded and fixed on the channel 4, and the rubber pad 41 is used to reduce the processing In order to reduce the risk of the drug 8 falling off from the gap between the channel 4 and the trigger tube 6, the trigger tube 6 is symmetrically provided with holes, which are used to keep the drug storage box 5 connected with the reaction pool 2. The inner wall of the trigger tube 6 is sequentially arranged with a first piston 64 and a second piston 68 from bottom to top, and the first piston 64 and the second piston 68 are both slidably matched with the inner wall of the trigger tube 6. A test gas is provided under the first piston 64, and the test gas is ether 63. A test liquid 67 is provided between the first piston 64 and the second piston 68, and the second piston 68 is also used to close the hole.

[0054] A through groove 62 is provided on one side wall of the placement groove 61 away from the detection cavity 3, and the through groove 62 is used to expose the position of the trigger tube 6. A plurality of heat-conducting sheets 66 are provided on one side wall of the placement groove 61 close to the detection cavity 3, and the heat-conducting sheets 66 are evenly arranged vertically. A heat-insulating layer 65 is provided on the side where the heat-conducting sheets 66 are close to each other. In this embodiment, the material of the heat-conducting sheets 66 is copper, and the material of the heat-insulating layer 65 is rubber.

[0055] The specific implementation process is as follows: when aquaculture wastewater is treated by this scheme, the aquaculture wastewater is introduced into the treatment device, and the treatment device is started at the same time. The sonic vibrator works to generate sound waves, and the sound waves are transmitted to the wastewater in the treatment tank 1, causing the wastewater to vibrate. At this time, by changing the frequency of the sound waves, the frequency of the wastewater oscillation can be adjusted synchronously, thereby changing the frequency height of the wastewater liquid level oscillation, etc. As the wastewater liquid level oscillates, part of the wastewater liquid level rises. When the raised wastewater liquid level is higher than the bottom filter 12, part of the wastewater enters the bottom chamber 11, and the impurities in the wastewater with a particle size larger than the sieve holes of the bottom filter 12 are blocked by the bottom filter 12 and cannot enter the chamber 11, thereby realizing the separation of impurities. At the same time, if the impurities are attached to the filter 12, they will be separated from the filter 12 under the impact of subsequent wastewater and the action of gravity, and return to the bottom of the treatment tank 1.

[0056] During this process, the user adjusts the frequency of vibration transmitted to the wastewater by the sonic vibrator according to the filtering requirements to change the height to which the wastewater can rise, so as to adjust the amount of wastewater that can pass through the filter mesh 12, while operating the ozone generator and opening the solenoid valve connected to the corresponding chamber 11 according to the filtering requirements.

[0057] The ozone generator generates ozone gas and pumps the ozone gas into the corresponding chamber 11. As the airflow flows in the chamber 11, the wastewater in the chamber 11 is driven to flow, thereby entering the reaction tank 2. In this process, as the ozone contacts the wastewater, the ozone gas disinfects and decolorizes the wastewater to achieve further treatment of the wastewater and kill microorganisms in the wastewater. Due to the action of the filter 12, the wastewater in the chamber 11 is mostly in the form of droplets, thereby increasing the contact surface between the ozone gas and the wastewater and shortening the action time required for the ozone gas to achieve the disinfection and sterilization effect, thereby improving the processing capacity of the treatment device.

[0058] At the same time, according to the actual situation of the wastewater, such as when the concentration of pollutants in the wastewater is high or the efficiency of wastewater treatment is required to be high, the user can simultaneously open the solenoid valve corresponding to the bottom of the treatment tank 1, so that the ozone gas synchronously flows out from the bottom of the treatment tank 1 and acts on the wastewater in the treatment tank 1, thereby treating the wastewater in advance and reducing the content of pollutants in the wastewater. At the same time, since the density of ozone gas is lower than that of wastewater, the ozone gas moves upward, thereby further driving the fluctuation of the wastewater liquid level, improving the efficiency of wastewater passing through the filter 12, and thus improving the efficiency of wastewater treatment.

[0059] When the wastewater enters the reaction tank 2, the filter screen 12 prevents the impurities entering the chamber 11 from following the treated wastewater into the reaction tank 2 and affecting the subsequent treatment of the wastewater.

[0060] After the wastewater enters the reaction tank 2, since the reaction tank 2 and the detection chamber 3 are connected, part of the wastewater enters the detection chamber 3. Due to the communicating vessel principle, at this time, the wastewater liquid level in the reaction tank 2 is flush with the liquid level in the detection chamber 3, so that the liquid level in the detection chamber 3 can reflect the liquid level of the wastewater in the reaction tank 2 to a certain extent. Since the size of the reaction tank 2 is known, the volume of the wastewater is obtained according to the size of the reaction tank 2 and the liquid level of the wastewater in the reaction tank 2. According to the volume of the wastewater, the user can roughly calculate the required content of the treatment agent 8. At this time, the user moves the trigger tube 6 upward or downward through the through groove 62 according to the ratio of the wastewater to the treatment agent 8, and then adjusts the relative position of the trigger tube 6 and the detection chamber 3, and then adjusts the trigger condition. As the liquid level in the detection chamber 3 rises, when the wastewater reaches the height of the trigger tube 6, the wastewater absorbs the temperature in the detection chamber 3, thereby The temperature of the ether 63 in the trigger tube 6 drops. Due to the principle of thermal expansion and contraction, the volume of the ether 63 gas drops rapidly. Under the action of air pressure and gravity, the test liquid 67 drives the first piston 64 and the second piston 68 to move downward. With the movement of the second piston 68, the hole is gradually exposed, thereby connecting the channel 4 between the medicine storage box 5 and the reaction tank 2. At this time, under the action of gravity, the treatment agent 8 inside the medicine storage box 5 enters the reaction tank 2 through the channel 4 under the action of gravity, and reacts with the wastewater in the reaction tank 2, thereby further treating the wastewater in the reaction tank 2. After observing that the treatment agent 8 enters the reaction tank 2, the user can adjust the throttle valve to reduce the amount of wastewater entering the reaction tank 2, thereby avoiding a large amount of subsequent wastewater from pouring into the reaction tank 2, causing a serious imbalance in the ratio of wastewater to the treatment agent 8, thereby affecting the treatment effect of the wastewater.

[0061] After the treatment agent 8 enters the reaction tank 2, part of the ozone gas that pushes the wastewater into the reaction tank 2 also follows the wastewater into the reaction tank 2, disturbing the wastewater in the reaction tank 2, thereby promoting the mixing of the wastewater and the treatment agent 8. At the same time, the vibration generated by the sonic vibrator can also be transmitted to the reaction tank 2 through the connection position between the treatment tank 1 and the reaction tank 2, and then transmitted to the wastewater inside the reaction tank 2, further promoting the mixing of the wastewater and the treatment agent 8, and improving the wastewater treatment efficiency.

[0062] At this time, the user can simultaneously discharge the liquid in the reaction tank 2. As the wastewater in the reaction tank 2 is discharged, the liquid level of the wastewater in the reaction tank 2 drops. When the wastewater liquid level is lower than the trigger tube 6, the heat at the position of the ether 63 can no longer be transferred to the wastewater. As time goes by, the temperature of the ether 63 rises, gradually pushing the first piston 64 and the second piston 68 to recover, closing the channel 4 and cutting off the supply of the treatment agent 8.

[0063] In the present embodiment, the design of the activated carbon 71 can adsorb impurities in the wastewater when the wastewater passes through the screen 7, thereby further purifying the wastewater. At the same time, the design of the heat conductive sheet 66 in the present embodiment, due to its high thermal conductivity, can quickly transfer the heat of the ether 63 to the wastewater, thereby rapidly reducing the temperature of the wastewater and improving the reaction speed of the dosing component. At the same time, the design of the thermal insulation layer 65 can avoid the vertical transfer of heat to a certain extent. When the wastewater has not reached the set position, the movement of the first piston 64 and the second piston 68 is triggered, thereby causing the treatment agent 8 to be released in advance, affecting the effect of wastewater treatment.

[0064] Embodiment 2:

[0065] As attached Figure 1 As shown, the difference from Example 1 is that in step 1, before the wastewater is introduced into the treatment device, the wastewater is introduced into an activated sludge tank, and the organic matter and nutrients in the wastewater are decomposed by the microorganisms in the activated sludge tank. The decomposition of the microorganisms in the activated sludge tank is used to pre-treat the wastewater, thereby reducing the content of organic matter and nutrients in the wastewater, thereby reducing the difficulty of subsequent wastewater treatment and improving the quality of wastewater treatment.

[0066] Embodiment 3:

[0067] As attached Figure 1 As shown, the difference from Example 2 is that the raw materials of the treating agent 8 used in the aquaculture wastewater treatment process include polyvinyl amide 83, aluminum sulfate 84, potassium permanganate 81 and ethylenediaminetetraacetic acid 85;

[0068] The treatment agent 8 is a plurality of spherical particles, which are composed of a core made of ethylenediaminetetraacetic acid 85, a middle layer made of polyvinyl amide 83 and aluminum sulfate 84, and an outer layer made of potassium permanganate 81 from the inside to the outside. An isolation layer 82 is provided between the core and the middle layer and between the middle layer and the outer layer. The isolation layer 82 is made of a water-soluble material, and the isolation layer 82 is polyvinyl alcohol.

[0069] The steps for making the middle layer are: select citric acid, sodium bicarbonate, polyethylene glycol, microcrystalline cellulose and aluminum sulfate 84, mix and sieve, press the mixed powder into pills, air-dry the pills, and evenly put them into polyvinyl amide 83 powder to complete the making of the middle layer.

[0070] The specific implementation process is as follows: when preparing the treatment agent 8 used in this scheme, the ethylenediaminetetraacetic acid 85 powder is sieved to make it into a powder with a fine and uniform texture, and then a tablet press is used to press a certain amount of ethylenediaminetetraacetic acid 85 powder into a number of dense small balls of equal size, and polyvinyl alcohol is wrapped around the outside of the ethylenediaminetetraacetic acid 85 balls as an isolation layer 82.

[0071] Then, citric acid, sodium bicarbonate, polyethylene glycol, microcrystalline cellulose and aluminum sulfate 84 in appropriate proportions are mixed and sieved, and a tablet press is used again to press them into a number of dense and equal-sized spheres. The diameter of the spheres made of aluminum sulfate 84 is much smaller than the diameter of the spheres made of ethylenediaminetetraacetic acid 85 powder. Then, the aluminum sulfate 84 spheres are mixed into the vinylamide powder, and the mixture of the two is covered on the outer surface of the ethylenediaminetetraacetic acid 85 spheres, and the ethylenediaminetetraacetic acid 85 spheres are completely wrapped to form an intermediate layer, and the aluminum sulfate 84 spheres are adjusted to be more evenly distributed in the intermediate layer, and the intermediate layer is repeatedly pressed to make it tightly wrapped around the outside of the ethylenediaminetetraethylamine spheres, and a layer of polyvinyl alcohol is wrapped around the outside again to form an isolation layer 82, and then the potassium permanganate 81 powder is wrapped around the outside of the intermediate layer again to complete the preparation of the treatment agent 8.

[0072] During the preparation of the treating agent 8 particles, the proportions of each layer are adjusted according to the specific state of the wastewater, and the weight is monitored in a timely manner to ensure that the proportions of different raw materials are within a reasonable range.

[0073] During use, potassium permanganate 81 powder first contacts with wastewater, and potassium permanganate 81 powder acts on the remaining organic matter, microorganisms and heavy metal ions in the wastewater, and purifies the wastewater to a certain extent through oxidation and decomposition. As potassium permanganate 81 powder is consumed, the middle layer is gradually exposed, so that polyvinyl amide 83 can act on the wastewater, so that polyvinyl amide 83 can act on the water, and at the same time, aluminum sulfate 84 spheres are also in contact with the wastewater synchronously. At this time, citric acid and sodium bicarbonate are dissolved in the wastewater and react with each other to produce a large amount of carbon dioxide. The aluminum sulfate 84 spheres quickly disintegrate and release the aluminum sulfate 84 powder therein. The carbon dioxide drives the wastewater to fluctuate, thereby promoting the combination of aluminum sulfate 84 and polyvinyl amide 83 powder with impurities in the wastewater, and then more quickly generating precipitation. At the same time, carbon dioxide can also promote the separation of polyvinyl amide 83 powder from the treatment agent 8, further accelerating the mixing of polyvinyl amide 83 with impurities in the wastewater. As the middle layer reacts, the core is gradually exposed, and then ethylenediaminetetraethylamine reacts with the heavy metal ions in the wastewater, thereby further treating the wastewater.

[0074] Compared with the prior art, the treatment agent 8 in this scheme does not need to be added multiple times, and can autonomously proceed to the next treatment step after the reaction of the previous substance is completed, further reducing human participation in the wastewater treatment process. At the same time, the design of the isolation layer 82 in this scheme enables the release time interval of the agent in the middle layer or core to be achieved by adjusting the material and thickness of the isolation layer 82 during the preparation of the treatment agent 8, thereby more accurately adjusting and controlling the application time of the agent.

[0075] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A process for treating aquaculture wastewater, characterized in that: include: Step 1: Use a treatment device to perform shock filtration on the wastewater to obtain the wastewater supernatant; Step 2: introducing ozone into the wastewater supernatant after filtering in step 1 to kill microorganisms in the wastewater supernatant, and filtering the wastewater supernatant again to remove the precipitate therein; Step 3: The treatment device adds a corresponding volume of treatment agent (8) into the wastewater supernatant according to the volume of the wastewater supernatant, and continuously shakes to promote mixing reaction between the wastewater supernatant and the treatment agent (8); Step 4: filtering the wastewater supernatant after the mixed reaction in step 3 to remove the precipitate therein, thereby completing the treatment of the aquaculture wastewater; The treatment device comprises a treatment pool (1), wherein an oscillating component and a filtering component are arranged in the treatment pool (1), wherein the oscillating component is used to generate oscillations, and the oscillations are transmitted to the wastewater to cause the wastewater level to fluctuate, and the filtering component comprises a plurality of filter screens (12), wherein the mesh size of the filter screens (12) decreases from top to bottom, and the filter screens (12) divide the treatment pool (1) into a plurality of chambers (11), and the output ends of the chambers (11) are each provided with a receiving component, and the receiving component is used to receive the wastewater in the corresponding chamber (11); The treatment device also includes an ozone generator, and the output end of the ozone generator is connected to the treatment tank (1), and a solenoid valve is provided at the connection point between the ozone generator and the treatment tank (1). The ozone generator is used to generate ozone, and the ozone is used to disinfect the wastewater and drive the wastewater to move.

2. The aquaculture wastewater treatment process according to claim 1, characterized in that: The output end of the chamber (11) is provided with a screen (7), and the mesh number of the screen (7) is larger than that of the upper filter (12) and smaller than that of the lower filter (12).

3. The aquaculture wastewater treatment process according to claim 2, characterized in that: The oscillation component includes a sonic vibrator, which is used to generate oscillations. The oscillations are transmitted to the wastewater to cause fluctuations in the wastewater liquid level.

4. The aquaculture wastewater treatment process according to claim 3, characterized in that: The receiving component comprises a reaction pool (2), the output ends of the chambers (11) are in communication with the reaction pool (2), and a throttle valve is provided at the connection points between the chambers (11) and the reaction pool (2).

5. The aquaculture wastewater treatment process according to claim 4, characterized in that: A drug administration component is arranged in the reaction pool (2), the drug administration component comprises a detection chamber (3), the detection chamber (3) is connected with the reaction pool (2), a drug storage box (5) is arranged above the detection chamber (3), the bottom wall of the drug storage box (5) is higher than the reaction pool (2), the output end of the drug storage box (5) is connected with a channel (4), and the output end of the channel (4) is connected with the reaction pool (2), a placement groove (61) is opened in the side wall of the detection chamber (3) away from the reaction pool (2), a trigger tube (6) is slidably fitted in the placement groove (61), and the trigger tube (6) passes through the channel ( 4) and closes the channel (4), the trigger tube (6) is symmetrically provided with holes, the holes are used to keep the medicine storage box (5) and the reaction pool (2) connected, the inner wall of the trigger tube (6) is sequentially arranged with a first piston (64) and a second piston (68) from bottom to top, and the first piston (64) and the second piston (68) are both slidably matched with the inner wall of the trigger tube (6), a test gas is provided below the first piston (64), a test liquid (67) is provided between the first piston (64) and the second piston (68), and the second piston (68) is also used to close the hole.

6. The aquaculture wastewater treatment process according to claim 5, characterized in that: In step 1, before the wastewater is introduced into the treatment device, the wastewater is introduced into an activated sludge tank, and the organic matter and nutrients in the wastewater are decomposed by the microorganisms in the activated sludge tank.

7. The aquaculture wastewater treatment process according to claim 6, characterized in that: An adsorption chamber is arranged in the screen (7), the adsorption chamber is communicated with the outside, and activated carbon (71) is arranged in the adsorption chamber.

8. The aquaculture wastewater treatment process according to claim 7, characterized in that: A through groove (62) is provided on a side wall of the placement groove (61) away from the detection cavity (3), and the through groove (62) is used to expose the position of the trigger tube (6).

9. The aquaculture wastewater treatment process according to claim 8, characterized in that: A plurality of heat conducting sheets (66) are provided on a side wall of the placement groove (61) close to the detection cavity (3), and the heat conducting sheets (66) are evenly arranged vertically. A heat insulating layer (65) is provided on the side where the heat conducting sheets (66) are close to each other.

10. The treating agent (8) used in the aquaculture wastewater treatment process according to any one of claims 1 to 9, characterized in that: The raw materials include polyvinyl amide (83), aluminum sulfate (84), potassium permanganate (81) and ethylenediaminetetraacetic acid (85); The treatment agent (8) is a plurality of spherical particles, which are composed of a core made of ethylenediaminetetraacetic acid (85), a middle layer made of polyvinyl amide (83) and aluminum sulfate (84), and an outer layer made of potassium permanganate (81) from the inside to the outside, and an isolation layer (82) is provided between the core and the middle layer and between the middle layer and the outer layer, and the isolation layer (82) is made of a water-soluble material; The steps for making the middle layer are as follows: citric acid, sodium bicarbonate, polyethylene glycol, microcrystalline cellulose and aluminum sulfate (84) are selected, mixed and sieved, the mixed powder is pressed into pills, the pills are air-dried, and then evenly placed in polyvinyl amide (83) powder to complete the making of the middle layer.

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