Chemical substance wastewater treatment equipment and its application in oxyfluorfen wastewater treatment

Abstract

The present invention relates to the technical field of chemical sewage treatment, and discloses a chemical substance sewage treatment device and its application in oxyfluorfen sewage treatment. In the present invention, after agricultural sewage enters the interior of a primary filtering mechanism, the sewage is filtered and divided into filtered water and sludge, and the sludge forms sludge water in a pollutant leaching tank; the sludge water is pumped into a mud-water separation mechanism to separate the sludge water, and obtain sludge dry cake and separated water; the separated water obtained from the mud-water separation mechanism and the filtered water output from the drainage pipe can be pumped into a pre-regulating mechanism, and the pH value is adjusted to the pH value required by the electrode electrolysis mechanism in the pre-regulating mechanism, and after entering the electrode electrolysis mechanism, the filtered water passes through each anode plate and each cathode plate in turn to generate an electrochemical reaction, and the pollutants in the sewage and the separated water after the pH value is adjusted are electrolytically decomposed to obtain treated water; the treated water can be input into a discharge regulating mechanism, and discharged or input into the pollutant leaching tank after being adjusted to a neutral pH value.

Description

Technical Field

[0001] The invention relates to the technical field of chemical wastewater treatment, in particular to chemical wastewater treatment equipment and application thereof in oxyfluorfen wastewater treatment. Background Art

[0002] With the continuous development of environmental awareness, people pay more and more attention to sewage, especially agricultural sewage. Agricultural sewage is usually composed of precipitation or irrigation water flowing through farmland or water discharged through leakage from farmland. Due to the large-scale use of fertilizers and pesticides in current agricultural production, farmland runoff is sprayed with pesticides and fertilizers, and generally only a small amount is attached to or applied to crops. The vast majority of the rest remains in the soil and floats in the atmosphere, and then enters the surface water through rainfall and runoff, turning agricultural production activities that originally had very little impact into the main source of water pollution.

[0003] Among the many pollution sources of agricultural sewage, oxyfluorfen belongs to the diphenyl ether class of compounds and is a representative variety of diphenyl ether herbicides. It has a highly effective contact effect on grass weeds, sedges and some annual broadleaf weeds. It is currently widely used in soybean, peanut, rapeseed, vegetables and some economic crop fields. Oxyfluorfen can enter the body of target plants through the coleoptile and mesocytic axis during the budding stage. It has poor conductivity in target plants and mainly forces plants to release ethylene by destroying cell membranes, thereby accelerating plant cell aging, causing physiological disorders, and ultimately causing the leaves of the entire plant to wither and die. Oxyfluorfen can be used with other herbicides such as butachlor, alachlor, trifluralin, paraquat, glyphosate, etc. to expand the herbicidal spectrum of oxyfluorfen while improving its activity.

[0004] As a herbicide, oxyfluorfen can cause continuous pollution to water bodies if it is present in sediments such as bottom mud. Residues in sandy soils also put oxyfluorfen at risk of seeping into groundwater. Under natural field conditions, neither microbial activity nor photolysis has a significant degradation effect on high-residue herbicides in farmland soils. At present, the mainstream research on oxyfluorfen pollution treatment is mainly based on chemical means, such as electrode method, photo-Fenton oxidation method, etc., but they are inconsistent with direct agricultural wastewater treatment practices.

[0005] The wastewater generated by current farmland irrigation, especially the wastewater generated by paddy field irrigation, will carry some soil into rivers or sewage treatment equipment. The existing sewage treatment equipment can usually only treat the sewage in agricultural sewage harmlessly, and it is difficult to effectively treat the sludge, resulting in the sludge being still polluting and affecting environmental safety.

[0006] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0007] In view of the deficiencies of the prior art, the present invention provides a chemical substance wastewater treatment device and its application in oxyfluorfen wastewater treatment.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] Chemical substance wastewater treatment equipment, including: a primary filtering mechanism, a pollutant leaching tank, a mud-water separation mechanism, a pre-regulating mechanism, an electrode electrolysis mechanism and a discharge regulating mechanism; a liquid inlet is provided at the top of one side of the primary filtering mechanism, a rolling filtering unit is arranged inside the primary filtering mechanism, and the rolling filtering unit can filter the sewage entering the primary filtering mechanism into filtered water and sludge; a liquid storage tank is arranged directly below the rolling filtering unit, a liquid discharge pipe is arranged at the bottom of the liquid storage tank, and the filtered water entering the liquid storage tank can be directly transported from the liquid discharge pipe to the pre-regulating mechanism; the pollutant leaching tank is arranged below one side of the liquid inlet of the primary filtering mechanism, and when the rolling filtering unit rotates, the sludge can be introduced into the pollutant leaching tank; after the sludge enters the pollutant leaching tank, it can be stirred and mixed with the raw water again to form Sludge water, sludge water can enter the sludge-water separation mechanism, the sludge-water separation mechanism is used to separate the sludge water to obtain sludge dry cake and separation water; both sewage and separation water can flow into the pre-adjustment mechanism, and the pH value is adjusted to the pH value required by the electrode electrolysis mechanism inside the pre-adjustment mechanism; the electrode electrolysis mechanism includes a plurality of detachable anode plates and a plurality of cathode plates, and the anode plates and the cathode plates are arranged at intervals. The sewage and separation water after the pH value is adjusted can produce an electrochemical reaction when passing through each of the anode plates and each of the cathode plates in sequence, and the chemical pollutants in the sewage and separation water after the pH value is adjusted are treated to obtain treated water; the treated water can be input into the discharge adjustment mechanism, and discharged after adjusting to a neutral pH value or input into the pollutant leaching tank as raw water to be re-mixed with the sludge.

[0010] Preferably, the rolling filter unit includes a central drum and a plurality of filter fins, and the plurality of filter fins are evenly arranged around the outer side of the central drum; each of the filter fins can filter the sewage entering from the liquid inlet, and the sewage can impact each of the filter fins, driving the central drum and each of the filter fins to rotate.

[0011] Preferably, a rejection plate is provided on the top of the isolation plate between the pollutant leaching tank and the liquid storage tank, and each of the filter fins can pass through the rejection plate once every rotation during the rotation around the central drum; when the filter fin passes through the rejection plate, the rejection plate can reject the attached sludge intercepted on the surface of the filter fin and introduce it into the pollutant leaching tank.

[0012] Preferably, a stirring mechanism is provided inside the pollutant leaching tank, a transfer pipe is provided between the pollutant leaching tank and the mud-water separation mechanism, and the transfer pipe is connected to the lifting pump; after the sludge enters the pollutant leaching tank, it can be re-stirred and mixed with water by the stirring mechanism to form sludge water, and the pollutants contained in the sludge are diffused into the water, and the sludge water is input into the mud-water separation mechanism through the transfer pipe by the working lifting pump.

[0013] Preferably, the stirring mechanism includes a stirring cage and a stirring drive motor, a plurality of connecting rods are arranged inside the stirring cage, and each of the connecting rods is provided with a plurality of stirring blades; an axis of the connecting rod and a plane where the plurality of stirring blades arranged on the connecting rod are located have an angle, and along the axis direction of the connecting rod, the angle between the plurality of stirring blades arranged on the connecting rod and the connecting rod increases from small to large and then decreases from large to small; the stirring drive motor can drive the stirring cage and the plurality of connecting rods to rotate synchronously, and the stirring drive motor can be started for a certain period of time as the rolling filter unit rotates.

[0014] Preferably, the mud and water separation mechanism includes a supporting filter belt, a pressing filter belt, a filter belt driving unit and a plurality of guide rods. The supporting filter belt and the pressing filter belt can gradually reduce the distance between the supporting filter belt and the pressing filter belt under the guidance of the guide rods respectively; the filter belt driving unit can synchronously drive the supporting filter belt and the pressing filter belt to rotate, and after the sludge water falls on the supporting filter belt, it can follow the supporting filter belt and the pressing filter belt to move, and under the pressure provided by the gradually reducing distance between the supporting filter belt and the pressing filter belt, the sludge water is separated, and the sludge dry cake is retained on the pressing filter belt and then collected, and the separated water is collected through the supporting filter belt and then input into the pre-regulation mechanism.

[0015] Preferably, the filter belt drive unit includes a filter belt drive motor, a load-bearing drive roller and a pressing drive roller, and a driving gear and a driven gear are respectively connected to the same side of the load-bearing drive roller and the pressing drive roller, and the driving gear and the driven gear are meshed with each other; the load-bearing drive roller can drive the load-bearing filter belt to rotate by friction, and the pressing drive roller can drive the pressing filter belt to rotate by friction, and the output shaft of the filter belt drive motor is coaxially fixed with the driving gear.

[0016] Preferably, the pre-regulation mechanism includes a pre-regulation tank, a pre-regulation pump and an acid tank, and a pH detector and an agitator are arranged inside the pre-regulation tank; after the sewage and separated water enter the pre-regulation tank, the pre-regulation pump can extract acid from the acid tank and inject it into the pre-regulation tank under the detection of the pH detector and the stirring of the agitator, so as to adjust the pH value of the sewage and separated water to the pH value required by the electrode electrolysis mechanism; the discharge adjustment mechanism includes a discharge adjustment tank, a discharge adjustment pump and an alkaline tank, and a pH detector and an agitator are also arranged inside the discharge adjustment tank; after the treated water enters the discharge adjustment tank, the discharge adjustment pump can extract alkaline solution from the alkaline tank and inject it into the discharge adjustment tank under the detection of the pH detector and the stirring of the agitator, so as to adjust the pH value of the treated water to neutral.

[0017] Preferably, the electrode electrolysis mechanism also includes a treatment cylinder, a plurality of the anode plates and a plurality of the cathode plates are arranged inside the treatment cylinder, and the number of the anode plates is greater than the number of the cathode plates; the liquid inlet of the treatment cylinder is arranged at the bottom end, and the liquid discharge port of the treatment cylinder is arranged at the top end, and the adjacent anode plates and the cathode plates and the sewage and separation water after adjusting the pH value inside the adjacent anode plates and the cathode plates together constitute an electrolytic cell, which electrolyzes the sewage and separation water after adjusting the pH value to decompose pollutants.

[0018] The invention discloses an application of a chemical substance wastewater treatment equipment in oxyfluorfen.

[0019] Compared with the prior art, the present invention provides a chemical wastewater treatment device and its application in oxyfluorfen wastewater treatment, which has the following beneficial effects:

[0020] 1. For this type of chemical wastewater treatment equipment, after the wastewater enters the primary filtering mechanism, it is filtered by the rolling filtering unit to separate the wastewater into filtered water and sludge. The filtered water is directly transported to the pre-regulating mechanism by pumping, and the sludge can be stirred and mixed with the raw water again in the pollutant leaching tank to form sludge water; the sludge water is pumped into the sludge-water separation mechanism, and the sludge water is separated by the sludge-water separation mechanism to obtain sludge dry cake and separated water; the separated water obtained from the sludge-water separation mechanism and the filtered water output from the drainage pipe can be pumped into the pre-regulating mechanism, and the pH value is adjusted to the pH value required by the electrode electrolysis mechanism inside the pre-regulating mechanism. The wastewater and separated water after the pH value adjustment enter the electrode electrolysis mechanism. After the decomposition mechanism, when passing through each anode plate and each cathode plate in sequence, an electrochemical reaction occurs in the electrolytic cell composed of the sewage and separated water after the pH value is adjusted inside the adjacent anode plates and cathode plates, and the pollutants in the sewage and separated water after the pH value is adjusted are electrolytically decomposed to obtain treated water; the treated water can be input to the discharge adjustment mechanism, and discharged after adjustment to a neutral pH value or input to the pollutant leaching tank as raw water to be re-mixed with the sludge, so that the sewage and sludge in the agricultural sewage can be fully treated, the sludge that cannot be fully treated in conventional water treatment equipment can be effectively treated, and the agricultural sewage using pesticides and fertilizers can be effectively treated.

[0021] 2. This chemical substance wastewater treatment equipment can filter the wastewater entering from the liquid inlet through each filter fin, and the wastewater can impact each filter fin, driving the central drum and each filter fin to rotate. In the process of the filter fin rotating downward under the impact, the sludge can be effectively guided along the filter fin to the inside of the pollutant leaching tank, and when the filter fin passes through the rejection plate, the rejection plate can remove the attached sludge intercepted on the surface of the filter fin and introduce it into the pollutant leaching tank, which can fully separate the sewage and the sludge and avoid the sludge remaining on the surface of the filter fin, so as to ensure that the filtering effect of the filter fin can maintain the initial state, effectively ensuring the effectiveness of the separation of sewage and sludge by this chemical substance wastewater treatment equipment.

[0022] 3. In this chemical wastewater treatment equipment, the stirring drive motor can drive the several stirring blades provided on each connecting rod to rotate by driving the entire stirring cage to rotate. Since the axis of the connecting rod and the plane where the several stirring blades provided on the connecting rod are located have an angle, along the axis direction of the connecting rod, the angle between the several stirring blades provided on the connecting rod and the connecting rod increases from small to large, and then from large to small. The stirring blades with different directions can be used to stir the inside of the pollutant leaching tank in different directions, so as to fully ensure that after the sludge enters the pollutant leaching tank, it can be re-stirred and mixed with water by the stirring mechanism to form sludge water, and the pollutants contained in the sludge can be diffused into the water to improve the mixing and diffusion efficiency, so as to effectively treat the pollutants in the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the chemical substance wastewater treatment equipment of the present invention;

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the primary filtering mechanism, the pollutant leaching tank and the mud-water separation mechanism of the present invention;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the pre-adjustment mechanism, electrode electrolysis mechanism and discharge adjustment mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the primary filtering mechanism and the pollutant leaching tank of the present invention;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the stirring mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the primary filtering mechanism and the pollutant leaching tank of the present invention;

[0029] Figure 7 It is a three-dimensional structural schematic diagram of the mud-water separation mechanism of the present invention;

[0030] Figure 8 It is a cross-sectional schematic diagram of the mud-water separation mechanism of the present invention;

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the electrode electrolysis mechanism of the present invention.

[0032] In the figure: 1. primary filtering mechanism; 11. liquid inlet; 12. rolling filtering unit; 121. central roller; 122. filtering fins; 13. liquid storage tank; 14. liquid discharge pipe; 15. rejecting plate; 2. pollutant leaching tank; 21. stirring mechanism; 211. stirring cage; 212. stirring drive motor; 213. connecting rod; 214. stirring blade; 22. transfer pipe; 23. lifting pump; 3. mud-water separation mechanism; 31. bearing filter belt; 32. pressing filter belt; 33 , filter belt drive unit; 331, filter belt drive motor; 332, load-bearing drive roller; 333, pressing drive roller; 334, driving gear; 335, driven gear; 34, guide rod; 4, pre-adjustment mechanism; 41, pre-adjustment tank; 42, pre-adjustment pump; 43, acid tank; 5, electrode electrolysis mechanism; 51, anode plate; 52, cathode plate; 53, processing cylinder; 6, discharge adjustment mechanism; 61, discharge adjustment tank; 62, discharge adjustment pump; 63, alkaline tank. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0034] As introduced in the background technology, in order to solve the deficiencies existing in the prior art and the above technical problems, the present application proposes a chemical substance wastewater treatment equipment and its application in oxyfluorfen wastewater treatment.

[0035] Embodiment 1:

[0036] Please refer to Figure 1-Figure 9, chemical substance wastewater treatment equipment, including: a primary filtering mechanism 1, a pollutant leaching tank 2, a mud-water separation mechanism 3, a pre-regulating mechanism 4, an electrode electrolysis mechanism 5 and a discharge regulating mechanism 6; a liquid inlet 11 is opened at the top of one side of the primary filtering mechanism 1, and a rolling filtering unit 12 is arranged inside the primary filtering mechanism 1, and the rolling filtering unit 12 can filter the sewage entering the primary filtering mechanism 1 into filtered water and sludge; a liquid storage tank 13 is arranged directly below the rolling filtering unit 12, and a drainage pipe 14 is arranged at the bottom of the liquid storage tank 13, and the filtered water entering the liquid storage tank 13 can be directly transported from the drainage pipe 14 to the pre-regulating mechanism 4; the pollutant leaching tank 2 is arranged below one side of the liquid inlet 11 of the primary filtering mechanism 1, and when the rolling filtering unit 12 rotates, the sludge can be introduced into the pollutant leaching tank 2; after the sludge enters the pollutant leaching tank 2, it can be re-contaminated with raw water The sludge water is formed by stirring and mixing, and the sludge water can enter the sludge-water separation mechanism 3, which is used to separate the sludge water to obtain sludge dry cake and separation water; both the sewage and the separation water can flow into the pre-adjustment mechanism 4, and the pH value is adjusted inside the pre-adjustment mechanism 4 to the pH value required by the electrode electrolysis mechanism 5; the electrode electrolysis mechanism 5 includes a plurality of detachable anode plates 51 and a plurality of cathode plates 52, and the plurality of anode plates 51 and the plurality of cathode plates 52 are arranged at intervals. The sewage and the separation water after the pH value is adjusted can produce an electrochemical reaction when passing through each anode plate 51 and each cathode plate 52 in sequence, and the chemical pollutants in the sewage and the separation water after the pH value is adjusted are treated to obtain treated water; the treated water can be input into the discharge adjustment mechanism 6, and discharged after adjusting to a neutral pH value or input into the pollutant leaching tank 2 as raw water to be re-mixed with the sludge.

[0037] When in use, this chemical substance wastewater treatment equipment can be set at the tail end of the main main stream of the farmland drainage channel (the front end where it flows into the river), or it can be set in the process of treating rural domestic water as a link in the treatment of rural domestic water. It is mainly used for the treatment of agricultural wastewater (not suitable for the purification of domestic water and industrial water). This chemical substance wastewater treatment equipment collects sewage from the liquid inlet 11 opened at the top of one side of the primary filter mechanism 1. After the sewage enters the interior of the primary filter mechanism 1, it is filtered by the rolling filter unit 12 to filter the sewage entering the primary filter mechanism 1 into filtered water and sludge. The filtered water can first enter the liquid storage tank 1 3, and is directly transported to the pre-regulating mechanism 4 through the discharge pipe 14 arranged at the bottom of the liquid storage tank 13 by pumping. When the rolling filter unit 12 rotates, the sludge is introduced into the pollutant leaching tank 2 arranged at one side below the liquid inlet 11 of the primary filtering mechanism 1. After the sludge enters the pollutant leaching tank 2, it is stirred and mixed with the raw water again to form sludge water; the sludge water is pumped into the sludge-water separation mechanism 3, and the sludge water is separated by the sludge-water separation mechanism 3 to obtain sludge dry cake and separated water; the separated water obtained from the sludge-water separation mechanism 3 and the filtered water output from the discharge pipe 14 can both be pumped into the pre-regulating mechanism 4, and in the pre-regulating mechanism 4 The pH value is adjusted internally to the pH value required by the electrode electrolysis mechanism 5 (acid is used inside the pre-adjustment mechanism 4, and in this embodiment, dilute hydrochloric acid is used to adjust the pH value to about 2). After the sewage and separated water after the pH value is adjusted enter the electrode electrolysis mechanism 5, when they pass through each anode plate 51 and each cathode plate 52 in sequence, an electrochemical reaction occurs inside the electrolytic cell composed of the sewage and separated water after the pH value is adjusted inside the adjacent anode plates 51 and cathode plates 52, and the pollutants inside the sewage and separated water after the pH value is adjusted are electrolytically decomposed (in actual use, the anode plate is an iron plate, and the cathode plate is a carbon electrode, and an electrochemical reaction occurs inside the electrolytic cell to adjust the pH value. The organic pollutants in the sewage and separated water after the pH value is adjusted are treated, and oxyfluorfen can be treated in a targeted manner) to obtain treated water; the treated water can be input into the discharge regulating mechanism 6 (alkaline solution is used inside the discharge regulating mechanism 6, and lime water is used in this embodiment to adjust the pH to about 7), and after adjusting to a neutral pH value, it is discharged or input into the pollutant leaching tank 2 as raw water to be re-mixed with the sludge, so that both the sewage and the sludge in the agricultural sewage can be fully treated, and the sludge that cannot be fully treated in conventional water treatment equipment can be fully treated, and the agricultural sewage using pesticides and fertilizers can be effectively and fully treated.

[0038] For further information, please refer to Figure 1-Figure 2 , Figure 6The rolling filter unit 12 includes a central drum 121 and a plurality of filter fins 122, and the plurality of filter fins 122 are evenly arranged around the outer side of the central drum 121; each filter fin 122 can filter the sewage entering from the liquid inlet 11, and the sewage can impact each filter fin 122, driving the central drum 121 and each filter fin 122 to rotate.

[0039] A rejection plate 15 is arranged on the top of the isolation plate between the pollutant leaching tank 2 and the liquid storage tank 13. When each filter fin 122 rotates around the central drum 121, it can pass through the rejection plate 15 once every rotation. When the filter fin 122 passes through the rejection plate 15, the rejection plate 15 can reject the attached sludge intercepted on the surface of the filter fin 122 and introduce it into the pollutant leaching tank 2.

[0040] When in use, each filter fin 122 can filter the sewage entering from the liquid inlet 11, and the sewage can impact each filter fin 122, driving the central drum 121 and each filter fin 122 to rotate. In the process of the filter fin 122 rotating downward under the impact, the sludge can be effectively guided along the filter fin 122 to the inside of the pollutant leaching tank 2, and when the filter fin 122 passes through the rejection plate 15, the rejection plate 15 can remove the attached sludge intercepted on the surface of the filter fin 122 and introduce it into the pollutant leaching tank 2, which can fully separate the sewage and the sludge while avoiding the sludge remaining on the surface of the filter fin 122, so as to ensure that the filtering effect of the filter fin 122 can maintain the initial state, effectively ensuring the effectiveness of the chemical wastewater treatment equipment in separating sewage and sludge.

[0041] For further information, please refer to Figure 1-Figure 2 , Figure 4-Figure 6 A stirring mechanism 21 is provided inside the pollutant leaching tank 2, a transfer pipe 22 is provided between the pollutant leaching tank 2 and the mud-water separation mechanism 3, and the transfer pipe 22 is connected to the lifting pump 23; after the sludge enters the pollutant leaching tank 2, it can be stirred and mixed with water again by the stirring mechanism 21 to form sludge water, and the pollutants contained in the sludge are diffused into the water, and the sludge water is input into the mud-water separation mechanism 3 through the transfer pipe 22 by the working lifting pump 23.

[0042] The stirring mechanism 21 includes a stirring cage 211 and a stirring drive motor 212. A plurality of connecting rods 213 are arranged inside the stirring cage 211, and each connecting rod 213 is provided with a plurality of stirring blades 214. The axis of the connecting rod 213 and the plane where the plurality of stirring blades 214 arranged on the connecting rod 213 are located have an angle. Along the axis direction of the connecting rod 213, the angle between the plurality of stirring blades 214 arranged on the connecting rod 213 and the connecting rod 213 increases from small to large and then decreases from large to small. The stirring drive motor 212 can drive the stirring cage 211 and the plurality of connecting rods 213 to rotate synchronously, and the stirring drive motor 212 can be started for a certain period of time as the rolling filter unit 12 rotates.

[0043] The stirring drive motor 212 can drive the several stirring blades 214 provided on each connecting rod 213 to rotate by driving the entire stirring cage 211 to rotate. Since the axis of the connecting rod 213 and the plane where the several stirring blades 214 provided on the connecting rod 213 are located have an angle, along the axis direction of the connecting rod 213, the angle between the several stirring blades 214 provided on the connecting rod 213 and the connecting rod 213 increases from small to large, and then from large to small. The stirring blades 214 with different directions can be used to stir the inside of the pollutant leaching tank 2 in different directions, so as to fully ensure that after the sludge enters the pollutant leaching tank 2, it can be stirred and mixed with water again by the stirring mechanism 21 to form sludge water, so as to improve the mixing and diffusion efficiency of the pollutants contained in the sludge into the water, and effectively treat the pollutants in the sludge.

[0044] For further information, please refer to Figure 1-Figure 2 , Figure 7-Figure 8 The mud-water separation mechanism 3 includes a supporting filter belt 31, a pressing filter belt 32, a filter belt driving unit 33 and a plurality of guide rods 34. The supporting filter belt 31 and the pressing filter belt 32 can gradually reduce the distance between the supporting filter belt 31 and the pressing filter belt 32 under the guidance of each guide rod 34; the filter belt driving unit 33 can synchronously drive the supporting filter belt 31 and the pressing filter belt 32 to rotate. After the sludge water falls on the supporting filter belt 31, the supporting filter belt 31 and the pressing filter belt 32 can move, and under the pressure provided by the gradually reduced distance between the supporting filter belt 31 and the pressing filter belt 32, the sludge water is separated, and the sludge dry cake is retained on the pressing filter belt 32 and then collected. The separated water is collected through the supporting filter belt 31 and then input into the pre-regulation mechanism 4.

[0045] The filter belt drive unit 33 includes a filter belt drive motor 331, a load-bearing drive roller 332 and a pressing drive roller 333. A driving gear 334 and a driven gear 335 are respectively connected to the same side of the load-bearing drive roller 332 and the pressing drive roller 333. The driving gear 334 and the driven gear 335 are meshed with each other. The load-bearing drive roller 332 can drive the load-bearing filter belt 31 to rotate by friction, and the pressing drive roller 333 can drive the pressing filter belt 32 to rotate by friction. The output shaft of the filter belt drive motor 331 is coaxially fixed with the driving gear 334.

[0046] Thereby, the filter belt driving motor 331 can rotate by driving the active gear 334, and since the bearing driving roller 332 can drive the bearing filter belt 31 to rotate by friction, the pressing driving roller 333 can drive the pressing filter belt 32 to rotate by friction, so that the bearing filter belt 31 and the pressing filter belt 32 can rotate synchronously, and after the sludge water falls on the bearing filter belt 31, it can move with the bearing filter belt 31 and the pressing filter belt 32, and under the pressure provided by the gradually shrinking distance between the bearing filter belt 31 and the pressing filter belt 32, the sludge water is separated, and the sludge dry cake is retained on the pressing filter belt 32 and then collected, and the separated water is collected through the bearing filter belt 31 and then input into the pre-regulation mechanism 4.

[0047] For further information, please refer to Figure 1 , Figure 3 The pre-regulation mechanism 4 includes a pre-regulation tank 41, a pre-regulation pump 42 and an acid tank 43, and a pH detector and a stirrer are arranged inside the pre-regulation tank 41; after the sewage and separated water enter the pre-regulation tank 41, the pre-regulation pump 42 can extract acid from the acid tank 43 and inject it into the pre-regulation tank 41 under the detection of the pH detector and the stirring of the stirrer, so as to adjust the pH value of the sewage and separated water to the pH value required by the electrode electrolysis mechanism 5; the discharge adjustment mechanism 6 includes a discharge adjustment tank 61, a discharge adjustment pump 62 and an alkaline tank 63, and a pH detector and a stirrer are also arranged inside the discharge adjustment tank 61; after the treated water enters the discharge adjustment tank 61, the discharge adjustment pump 62 can extract alkaline solution from the alkaline tank 63 and inject it into the discharge adjustment tank 61 under the detection of the pH detector and the stirring of the stirrer, so as to adjust the pH value of the treated water to neutral.

[0048] Thus, the pH value of the sewage and the separated water can be adjusted to the pH value required by the electrode electrolysis mechanism 5 through the pre-adjustment mechanism 4. After the electrode electrolysis mechanism 5 completes the electrolytic treatment of pollutants, the discharge adjustment mechanism 6 adjusts the pH value of the treated water to neutral so that the treated water can meet the discharge standards for discharge or be recycled to the pollutant leaching tank 2 for reuse.

[0049] For further information, please refer to Figure 1 , Figure 3 , Fig. 9The electrode electrolysis mechanism 5 also includes a treatment tank 53, a plurality of anode plates 51 and a plurality of cathode plates 52 are arranged inside the treatment tank 53, and the number of anode plates 51 is greater than the number of cathode plates 52; the liquid inlet of the treatment tank 53 is arranged at the bottom, and the liquid outlet of the treatment tank 53 is arranged at the top. The adjacent anode plates 51 and cathode plates 52 and the sewage and separated water after adjusting the pH value inside the adjacent anode plates 51 and cathode plates 52 together constitute an electrolytic cell, and the sewage and separated water after adjusting the pH value are electrolyzed to decompose pollutants, so as to pass the anode plate 51 to the cathode plate 52. The electrode plate is an iron plate, and the cathode plate is a carbon electrode. An electrochemical reaction occurs inside the electrolytic cell to treat the sewage after adjusting the pH value and the organic pollutants in the separated water, and can specifically treat oxyfluorfen. After the anode plate is fully used, it can be replaced in time. The liquid inlet of the treatment cylinder 53 is set at the bottom, and the liquid discharge port of the treatment cylinder 53 is set at the top, so that a plurality of anode plates 51 and a plurality of cathode plates 52 can be fully immersed, ensuring the full use of the plurality of anode plates 51 and a plurality of cathode plates 52.

[0050] Embodiment 2:

[0051] The application of the chemical wastewater treatment equipment in oxyfluorfen uses the chemical wastewater treatment equipment of Example 1. When the chemical wastewater treatment equipment treats agricultural wastewater containing oxyfluorfen, it includes the following steps:

[0052] S1. Install the chemical wastewater treatment equipment at the tail end of the main stream of the farmland drainage canal;

[0053] S2, introducing agricultural sewage from irrigation or precipitation into the farmland drainage channel into the chemical substance sewage treatment equipment from the liquid inlet 11;

[0054] S3, after the sewage enters the primary filter mechanism 1, it is filtered by the rolling filter unit 12 to separate the sewage into filtered water and sludge;

[0055] S4, when the rolling filter unit 12 rotates, the sludge is introduced into the pollutant leaching tank 2 arranged below one side of the liquid inlet 11 of the primary filter mechanism 1. After the sludge enters the pollutant leaching tank 2, it is stirred and mixed with the raw water again to form sludge water;

[0056] S5, the sludge water is pumped into the sludge-water separation mechanism 3, and the sludge water is separated by the sludge-water separation mechanism 3 to obtain sludge dry cake and separated water;

[0057] S6, the separated water obtained from the mud-water separation mechanism 3 and the filtered water output from the drain pipe 14 can be pumped into the pre-regulation mechanism 4, and the pH value is adjusted inside the pre-regulation mechanism 4 to the pH value required by the electrode electrolysis mechanism 5;

[0058] S7, after the pH-adjusted sewage and separated water enter the electrode electrolysis mechanism 5, an electrochemical reaction occurs when the sewage and separated water pass through each anode plate 51 and each cathode plate 52 in sequence, and the pollutants in the pH-adjusted sewage and separated water are electrolyzed and decomposed to obtain treated water;

[0059] S8. The treated water is input to the discharge regulating mechanism 6, and after being adjusted to a neutral pH value, it is discharged or input into the pollutant leaching tank 2 as raw water to be remixed with the sludge, or discharged.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Chemical substance wastewater treatment equipment, characterized in that: include: A primary filtering mechanism (1), a pollutant leaching tank (2), a mud-water separation mechanism (3), a pre-regulation mechanism (4), an electrode electrolysis mechanism (5) and a discharge regulation mechanism (6); A liquid inlet (11) is provided at the top end of one side of the primary filtering mechanism (1), and a rolling filtering unit (12) is provided inside the primary filtering mechanism (1), and the rolling filtering unit (12) can filter the sewage entering the primary filtering mechanism (1) into filtered water and sludge; A liquid storage tank (13) is arranged directly below the rolling filter unit (12), and a liquid discharge pipe (14) is arranged at the bottom end of the liquid storage tank (13), so that the filtered water entering the liquid storage tank (13) can be directly transported from the liquid discharge pipe (14) to the pre-regulation mechanism (4); The pollutant leaching tank (2) is arranged below one side of the liquid inlet (11) of the primary filtering mechanism (1), and when the rolling filtering unit (12) rotates, sludge can be introduced into the pollutant leaching tank (2); After the sludge enters the pollutant leaching tank (2), it can be stirred and mixed with the raw water again to form sludge water, and the sludge water can enter the sludge-water separation mechanism (3). The sludge-water separation mechanism (3) is used to separate the sludge water to obtain sludge dry cake and separated water; Both sewage and separated water can flow into the pre-regulation mechanism (4), and the pH value is adjusted inside the pre-regulation mechanism (4) to the pH value required by the electrode electrolysis mechanism (5); The electrode electrolysis mechanism (5) comprises a plurality of detachable anode plates (51) and a plurality of cathode plates (52), wherein the plurality of anode plates (51) and the plurality of cathode plates (52) are arranged at intervals, and the sewage and the separated water after the pH value is adjusted can generate an electrochemical reaction when passing through each of the anode plates (51) and each of the cathode plates (52) in sequence, thereby treating the chemical pollutants in the sewage and the separated water after the pH value is adjusted to obtain treated water; The treated water can be input into the discharge regulating mechanism (6), and then discharged after being adjusted to a neutral pH value, or input into the pollutant leaching tank (2) as raw water to be remixed with the sludge; A stirring mechanism (21) is arranged inside the pollutant leaching tank (2), and the stirring mechanism (21) comprises a stirring cage (211) and a stirring drive motor (212). A plurality of connecting rods (213) are arranged inside the stirring cage (211), and each of the connecting rods (213) is provided with a plurality of stirring blades (214); The axis of the connecting rod (213) and the plane where the plurality of stirring blades (214) arranged on the connecting rod (213) are located have an included angle, and along the axis direction of the connecting rod (213), the included angle between the plurality of stirring blades (214) arranged on the connecting rod (213) and the connecting rod (213) increases from small to large and then decreases from large to small; The stirring drive motor (212) can drive the stirring cage (211) and a plurality of the connecting rods (213) to rotate synchronously, and the stirring drive motor (212) can be started for a certain period of time as the rolling filter unit (12) rotates.

2. The chemical wastewater treatment equipment according to claim 1, characterized in that: The rolling filter unit (12) comprises a central drum (121) and a plurality of filter fins (122), wherein the plurality of filter fins (122) are evenly arranged around the outer side of the central drum (121); Each of the filter fins (122) can filter sewage entering from the liquid inlet (11), and the sewage can impact each of the filter fins (122), thereby driving the central drum (121) and each of the filter fins (122) to rotate.

3. The chemical wastewater treatment equipment according to claim 2, characterized in that: A rejection plate (15) is provided at the top of the isolation plate between the pollutant leaching tank (2) and the liquid storage tank (13), and each of the filter fins (122) can pass through the rejection plate (15) once per rotation when rotating around the central drum (121); When the filter fin (122) passes through the rejection plate (15), the rejection plate (15) can reject the attached sludge intercepted on the surface of the filter fin (122) and introduce it into the pollutant leaching tank (2).

4. The chemical wastewater treatment equipment according to claim 1, characterized in that: A transfer pipe (22) is provided between the pollutant leaching tank (2) and the mud-water separation mechanism (3), and the transfer pipe (22) is connected to a lift pump (23); After the sludge enters the pollutant leaching tank (2), it can be stirred and mixed with water again by the stirring mechanism (21) to form sludge water, so that the pollutants contained in the sludge are diffused into the water, and the sludge water is input into the sludge-water separation mechanism (3) through the transfer pipe (22) by the working lifting pump (23).

5. The chemical wastewater treatment equipment according to claim 1, characterized in that: The mud-water separation mechanism (3) comprises a load-bearing filter belt (31), a pressing filter belt (32), a filter belt driving unit (33) and a plurality of guide rods (34); the load-bearing filter belt (31) and the pressing filter belt (32) can gradually reduce the distance between the load-bearing filter belt (31) and the pressing filter belt (32) under the guidance of each of the guide rods (34); The filter belt drive unit (33) can synchronously drive the supporting filter belt (31) and the pressing filter belt (32) to rotate. After the sludge water falls onto the supporting filter belt (31), it can follow the supporting filter belt (31) and the pressing filter belt (32) to move, and under the pressure provided by the gradually reduced distance between the supporting filter belt (31) and the pressing filter belt (32), the sludge water is separated, and the sludge dry cake is retained on the pressing filter belt (32) and then collected. The separated water passes through the supporting filter belt (31) and is then input into the pre-regulation mechanism (4).

6. The chemical wastewater treatment equipment according to claim 5, characterized in that: The filter belt drive unit (33) comprises a filter belt drive motor (331), a load-bearing drive roller (332) and a pressing drive roller (333); a driving gear (334) and a driven gear (335) are respectively connected to the same side of the load-bearing drive roller (332) and the pressing drive roller (333); the driving gear (334) and the driven gear (335) are meshed with each other; The load-bearing driving roller (332) can drive the load-bearing filter belt (31) to rotate by friction, and the pressing driving roller (333) can drive the pressing filter belt (32) to rotate by friction. The output shaft of the filter belt driving motor (331) is coaxially fixed with the driving gear (334).

7. The chemical wastewater treatment equipment according to claim 1, characterized in that: The pre-regulation mechanism (4) comprises a pre-regulation tank (41), a pre-regulation pump (42) and an acid tank (43), wherein a pH detector and a stirrer are arranged inside the pre-regulation tank (41); After the sewage and the separated water enter the pre-adjustment tank (41), the pre-adjustment pump (42) can extract acid from the acid tank (43) and inject it into the pre-adjustment tank (41) under the detection of the pH detector and the stirring of the stirrer, so as to adjust the pH value of the sewage and the separated water to the pH value required by the electrode electrolysis mechanism (5); The discharge adjustment mechanism (6) comprises a discharge adjustment tank (61), a discharge adjustment pump (62) and an alkaline tank (63), and a pH detector and a stirrer are also arranged inside the discharge adjustment tank (61); After the treated water enters the discharge adjustment tank (61), the discharge adjustment pump (62) can extract alkaline solution from the alkaline tank (63) and inject it into the discharge adjustment tank (61) under the detection of the pH detector and the stirring of the stirrer, so as to adjust the pH value of the treated water to neutral.

8. The chemical wastewater treatment equipment according to claim 1, characterized in that: The electrode electrolysis mechanism (5) further comprises a processing tank (53), a plurality of anode plates (51) and a plurality of cathode plates (52) are arranged inside the processing tank (53), and the number of the anode plates (51) is greater than the number of the cathode plates (52); The liquid inlet of the treatment tank (53) is arranged at the bottom, and the liquid outlet of the treatment tank (53) is arranged at the top. The adjacent anode plate (51) and the cathode plate (52) and the sewage and separated water after adjusting the pH value inside the adjacent anode plate (51) and the cathode plate (52) together constitute an electrolytic cell, and the pollutants in the sewage and separated water after adjusting the pH value are electrolyzed and decomposed.

9. Application of the chemical substance wastewater treatment equipment according to any one of claims 1 to 8 in oxyfluorfen wastewater treatment.

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