CN113248045B - Agricultural wastewater treatment device and method based on multistage treatment - Google Patents
Agricultural wastewater treatment device and method based on multistage treatment Download PDFInfo
- Publication number
- CN113248045B CN113248045B CN202110538632.3A CN202110538632A CN113248045B CN 113248045 B CN113248045 B CN 113248045B CN 202110538632 A CN202110538632 A CN 202110538632A CN 113248045 B CN113248045 B CN 113248045B
- Authority
- CN
- China
- Prior art keywords
- wastewater
- rotating shaft
- water
- tank
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention provides a device and a method for treating agricultural wastewater based on multi-stage treatment, which comprises a regulating reservoir, a phosphorus removal sedimentation reservoir, a hydrolysis acidification reservoir and a CASS (cyclic activated sludge System) reservoir which are sequentially communicated through a water pipeline, wherein at least one medicament adding device is arranged on the water pipeline between the regulating reservoir and the phosphorus removal sedimentation reservoir, and the medicament adding device is also communicated with a medicament solution preparation container; the medicament adding device comprises a base arranged on the inner side wall of the infusion pipeline and a rotating shaft rotatably arranged on the base, a plurality of blades are uniformly arranged on the rotating shaft around the rotating shaft, and when water flows through the pipeline, the blades can be pushed to rotate the rotating shaft; the water wheel base is provided with a first infusion channel communicated with the medicine solution preparation container, the blades are provided with a plurality of liquid outlet holes, a second infusion channel communicated with the first infusion channel and the liquid outlet holes is arranged in the rotating shaft, and the mixing effect of the medicine and the waste water and the utilization rate of the medicine are improved by arranging the medicine adding device and the medicine solution preparation container.
Description
Technical Field
The invention relates to the technical field of agricultural wastewater treatment, in particular to a device and a method for treating agricultural wastewater based on multi-stage treatment.
Background
With the progress and development of society, the scale of high-salinity organic wastewater generated in the agricultural production industry is continuously enlarged, and if a large amount of high-salinity wastewater is directly discharged without treatment, the high-salinity organic wastewater not only causes great damage to the environment, but also hinders the economic development.
The waste water produced by the tuber mustard is one of high-salt organic waste water, and the existing treatment means of the high-salt organic waste water is mainly adopted: the process comprises the steps of residue and sundry removal, chemical phosphorus removal, hydrolytic acidification, anaerobic contact, CASS process treatment and the like, wherein alkali liquor and a phosphorus removing agent are added into a phosphorus removing pool in the chemical phosphorus removal process to respectively adjust the ph and the chemical phosphorus removal of the wastewater; at present, most of common means for adding alkali liquor and phosphorus removing agent are directly added into a phosphorus removing pool, and the method can not effectively mix the alkali liquor, the phosphorus removing agent and the wastewater; the production of the preserved szechuan pickle comprises the steps of pickling, elutriating, desalting, dehydrating, sterilizing, cooling and the like, and wastewater can be generated in each step; however, the nitrogen and phosphorus contents of the wastewater generated in each link are different, and each link is not continuous in time, so that the discharge amount of the wastewater is intermittent, and the nitrogen and phosphorus contents in the wastewater are different, so that the nitrogen and phosphorus contents in the wastewater after being mixed and homogenized in the adjusting tanks at different stages are different, and the input amounts of the alkali liquor and the phosphorus removing agent are different; the existing wastewater treatment device puts the alkali liquor and the phosphorus removing agent according to the amount of the wastewater, so that the utilization rate of the alkali liquor and the phosphorus removing agent and the phosphorus removing effect on the wastewater cannot reach the expected effect.
Disclosure of Invention
In view of the above problems, the present application provides a device and a method for treating agricultural wastewater based on multi-stage treatment, so as to solve at least one technical problem of the existing wastewater treatment device.
The invention provides a multistage treatment-based agricultural wastewater treatment device, which comprises a regulating reservoir, a phosphorus removal sedimentation reservoir, a hydrolysis acidification reservoir and a CASS (cyclic activated sludge System) reservoir which are sequentially communicated through a water pipeline, wherein at least one medicament adding device is arranged on the water pipeline between the regulating reservoir and the phosphorus removal sedimentation reservoir, and the medicament adding device is also communicated with a medicament solution preparation container; the medicament adding device comprises a base arranged on the inner side wall of the infusion pipeline and a rotating shaft rotationally arranged on the base, a plurality of blades are uniformly arranged on the rotating shaft around the rotating shaft, and when water flows through the pipeline, the blades can be pushed to rotate the rotating shaft; the water wheel base is provided with a first infusion channel communicated with the medicine solution preparation container, the blades are provided with a plurality of liquid outlet holes, and the rotating shaft is internally provided with a second infusion channel communicated with the first infusion channel and the liquid outlet holes.
Further, the medicament feeding device comprises an outer tube coaxially arranged with the rotating shaft, connecting flanges are arranged at two ends of the outer tube, and the base is arranged on the inner side wall of the outer tube.
Furthermore, a guide hole capable of being communicated with the rotating shaft is formed in the base in the direction from the circumferential side wall of the outer tube to the rotating shaft, a pressing rod is arranged in the guide hole in a guiding mode, a cam corresponding to the end portion of the pressing rod is arranged on the circumferential side wall of the rotating shaft, an elastic piece capable of pressing the pressing rod to the rotating shaft is arranged in the guide hole, and a piezoelectric piece is arranged at the end portion, far away from the rotating shaft, of the guide hole.
Furthermore, the adjusting tank is also provided with a plurality of water inlet pipelines, the water inlet pipelines are sequentially connected with wastewater output ports of different procedures of tuber mustard production, and each water inlet pipeline is provided with a flow sensor.
The device further comprises a control device, a water pump is arranged between the medicine solution preparation container and the medicine adding device, and the control device is connected with the flow sensors, the water pump and the piezoelectric element.
Further, the control device is one of a single chip microcomputer and a programmable logic controller.
Further, in order to enable the wastewater treatment device provided by the invention to better treat wastewater, the invention also provides a multistage treatment-based agricultural wastewater treatment method, which comprises the following steps:
step one, removing residues and sundries from waste water generated in the production of tuber mustard, and then conveying the waste water into an adjusting tank, and mixing the waste water with high salinity and the waste water with low salinity in the adjusting tank;
secondly, preparing a medicine solution with a proper concentration in a medicine solution preparation container, mixing the wastewater in a wastewater regulating reservoir, conveying the wastewater in the regulating reservoir to a dephosphorization sedimentation tank through a water pump, and adding the prepared liquid medicine into the wastewater through a medicament adding device when the wastewater passes through a water conveying pipeline;
and step three, treating the wastewater by sequentially passing the wastewater through a hydrolysis acidification tank and a CASS tank so as to enable the wastewater to meet the discharge standard.
Further, before the step one, the method further comprises the following steps: the control device acquires the amount of the wastewater generated in each process by acquiring the detection values of the flow sensors arranged on the plurality of water inlet pipelines of the regulating reservoir, so that the concentration of nitrogen and phosphorus in the wastewater mixed in the regulating reservoir is acquired.
Further, in step two, the water pump conveys the drug solution that the drug solution preparation container was interior to dispose to the blade and flows out through the play liquid hole on the blade, and waste water can promote the pivot to rotate when passing through the blade to can improve the mixed effect of drug solution and waste water.
Further, in step two, can promote the pivot and rotate when waste water passes through the blade, the cam on the pivot through and when leaving the pressure arm, under the cooperation of elastic component, can promote the pressure arm and reciprocate to press the piezoelectric element to make the piezoelectric element produce voltage, the big more the rivers of waste water the voltage that the piezoelectric element can produce is big more, can detect the flow size of waste water.
Furthermore, in the second step, the control device can control the power of the water pump according to the concentration of nitrogen and phosphorus in the wastewater and the wastewater flow detected by the medicament adding device, and control the addition amount of the medicament.
And further, a fourth step is carried out after the third step, and the wastewater obtained in the third step is further filtered by a filter.
Further, the filter comprises a first filter layer, a second filter layer and a third filter layer; the first filter layer is an adsorptive flexible net; the second filter layer is a filter paper layer; the third filter layer is used for filtering by a microporous tube.
Furthermore, the adsorptive flexible net is formed by adding activated carbon powder into silk threads of a pure cotton filter screen in the winding and weaving process of the pure cotton filter screen, so that the adsorptive flexible net can better perform an adsorptive action while filtering. Pore size of the adsorptive flexible web
0.25-0.68mm, and the specific surface area S of the activated carbon powder is 455-870m2And the surface coverage eta of the activated carbon powder on a pure cotton filter screen is 85-96 percent. The surface coverage of the activated carbon powder on the pure cotton filter screen refers to the ratio of the area of the surface of the pure cotton filter screen covered by the activated carbon powder to the total area of the surface of the pure cotton filter screen.
Further, in order to further improve the filtering effect, the pore diameter of the adsorptive flexible net
The specific surface area S of the active carbon powder and the surface coverage eta of the active carbon powder on the pure cotton filter screen satisfy the following empirical relationship:
wherein alpha is a relation coefficient and has a value range of 2.61-4.92.
Further, the thickness d of the filter paper layer is 1.32-1.56 mm.
Further, the micropore pipe is a ceramic micropore pipe.
Compared with the prior art, the agricultural wastewater treatment device and method based on multi-stage treatment have the following advantages and effects:
1. according to the agricultural wastewater treatment device and method based on multistage treatment, the medicament adding device is arranged on the water conveying pipeline between the regulating tank and the dephosphorization sedimentation tank and is communicated with the medicament solution preparation container, so that a medicament to be added can be dissolved into a medicament solution with a certain concentration through the medicament solution preparation container, the medicament solution is added into wastewater through the plurality of liquid outlet holes in the blades when the wastewater flows through the pipeline, and the blades can push the rotating shaft to rotate under the pushing of the wastewater, so that the medicament solution can be uniformly added into the wastewater, the mixing effect of the medicament and the wastewater is improved, and the utilization rate of the medicament is improved.
2. According to the agricultural wastewater treatment device and method based on multistage treatment, the cam is arranged on the rotating shaft, and the pressing rod and the piezoelectric element are arranged in a matching manner, so that the rotating speed of the rotating shaft can be determined according to the voltage value generated by the piezoelectric element, the flow rate of wastewater is obtained, the power of the water pump is controlled according to the flow rate of the wastewater, the adding amount of a medicament is controlled, and the utilization rate of the medicament is further improved.
3. According to the agricultural wastewater treatment device and method based on multistage treatment, the adjusting tank is provided with the plurality of water inlet pipelines which correspond to the preserved szechuan pickle production processes one by one, and the plurality of water inlet pipelines are respectively provided with the flow sensor, so that the wastewater amount generated by each process is obtained, the nitrogen and phosphorus concentration and the pH value of the wastewater mixed in the adjusting tank can be obtained, the amount of added medicament can be controlled in a targeted manner, and the utilization rate of the medicament is further improved.
4. The invention provides a device and a method for treating agricultural wastewater based on multi-stage treatment, wherein a filter comprises a first filter layer, a second filter layer and a third filter layer; the first filter layer is an adsorptive flexible net; the second filter layer is a filter paper layer; the third filter layer is a microporous tube filter; thereby better treating the agricultural wastewater.
5. The invention provides a device and a method for treating agricultural wastewater based on multi-stage treatment, wherein the aperture of the adsorptive flexible net is arranged
The empirical relationship between the specific surface area S of the activated carbon powder and the surface coverage eta of the activated carbon powder on the pure cotton filter screen is satisfied, so that the adsorptive flexible net can better play the dual functions of adsorption and filtration, the synergistic effect is achieved, and the agricultural wastewater can be better treated.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof, which proceeds with reference to the accompanying drawings.
FIG. 1 is a schematic view showing the overall structure of an agricultural wastewater treatment apparatus based on multistage treatment according to the present invention.
Fig. 2 is a schematic structural view of a medicament adding device in the agricultural wastewater treatment device based on multi-stage treatment provided by the invention.
FIG. 3 is a schematic view of a part of an enlarged structure at A in the agricultural wastewater treatment device based on multi-stage treatment provided by the invention.
FIG. 4 is a schematic view of a part of an enlarged structure at B in the agricultural wastewater treatment device based on multi-stage treatment provided by the invention.
FIG. 5 is a schematic view of a cross-sectional structure at C-C in the agricultural wastewater treatment device based on multi-stage treatment.
Fig. 6 is a schematic view of the blade of fig. 2 in a view direction D.
FIG. 7 is a flow chart schematically illustrating a method for treating agricultural wastewater based on multi-stage treatment according to the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features in the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
A multistage treatment-based agricultural wastewater treatment device, referring to fig. 1-6, as a specific implementation manner, the device comprises an adjusting tank 1, a phosphorus removal sedimentation tank 2, a hydrolysis acidification tank 3 and a CASS tank 4 which are sequentially communicated through a water pipeline 5, wherein at least one medicament adding device 6 is arranged on the water pipeline between the adjusting tank 1 and the phosphorus removal sedimentation tank 2, and the medicament adding device 6 is also communicated with a medicament solution preparation container 60; the medicament adding device 6 comprises a base 61 arranged on the inner side wall of the infusion pipeline and a rotating shaft 62 rotatably arranged on the base 61, a plurality of blades 63 are uniformly arranged on the rotating shaft 62 around the rotating shaft, and when water flows through the pipeline, the blades 63 can be pushed to rotate the rotating shaft 62; the water wheel base 61 is provided with a first infusion channel 610 communicated with the medicine solution preparation container 60, the blade 63 is provided with a plurality of liquid outlet holes 630, and the rotating shaft 62 is provided with a second infusion channel 621 communicated with the first infusion channel 610 and the liquid outlet holes 630.
Specifically, wherein the medicament adding device 6 can be set to be a plurality of, the medicament solution preparation container 60 is also correspondingly provided with a plurality of medicaments, different medicaments are respectively added through the plurality of medicament adding devices 6, for example, medicaments such as alkali liquor, polyferric sulfate, polyacrylamide and the like can be added through the medicament adding device 6, the effects of adjusting the ph value of the wastewater and chemically removing phosphorus are achieved, and meanwhile tiny suspended matters and colloidal impurities in the wastewater can be removed.
Further, referring to fig. 2, as a preferred embodiment, the medicament adding device 6 includes an outer tube 6a coaxially disposed with the rotating shaft 62, both ends of the outer tube 6a are provided with connecting flanges 6a1, and the base 61 is disposed on the inner side wall of the outer tube 6 a. When in use, the pipeline connecting device can be connected with pipelines at two ends through flanges.
Further, referring to fig. 2, 3, and 4, as a specific embodiment, a guide hole 612 capable of communicating with the rotation shaft is provided in the direction from the circumferential side wall of the outer tube 6a to the rotation shaft 62 on the base 61, a pressing rod 64 is guided in the guide hole 612, a cam 623 corresponding to an end of the pressing rod 64 is provided on the circumferential side wall of the rotation shaft 62, an elastic member 65 capable of pressing the pressing rod 64 to the rotation shaft 62 is provided in the guide hole 612, and a piezoelectric member 66 is provided at an end of the guide hole 612 away from the rotation shaft 62.
Specifically, referring to fig. 2 to fig. 6, as a specific embodiment, the specific structure of the medicament adding device 6 is as follows: comprises a cylindrical outer pipe 6a and a base 61 arranged on the inner side wall of the outer pipe, wherein the base 61 is provided with a cylindrical step through hole 61a, wherein the step through hole 61a is a three-step hole with sequentially reduced aperture 61a-1, 61a-2 and 61a-3, wherein the rotating shaft 62 is arranged in the step through hole in a penetrating way and comprises a cylindrical rod body 62a and two step parts 62b arranged at the end part of the rod body, two impellers are arranged at the other end of the rod body, the two step parts 62b are arranged at intervals and are in rotating fit with the step hole 61a-1, a sealing element placing groove 62b-1 is arranged on the outer peripheral surface of each step part 62b, a sealing element is arranged in each sealing element placing groove, so that the step part 62b is in sealing fit with the circumferential inner side wall of the step part 61a-1, and one side of the step through hole 61a close to the step part 61a-1 is provided with an end cover; thrust bearings 100 are arranged between the end cover and the step part close to the end cover and between the other step part and the bottom surface of the 61a-1, the cams are arranged on the rod body and are positioned inside the 61a-2 when the rotating shaft is arranged in the step through hole 61a, one end of the first liquid conveying channel 610 penetrates through the outer tube 6a, the other end of the first liquid conveying channel 610 is communicated with the inside of the 61a-1, and the other end of the first liquid conveying channel 610 is positioned between the two step parts 62b when the rotating shaft is arranged in the step through hole 61 a; the pivot is from keeping away from step portion 62 b's one end is provided with the blind hole along its axial, radially is provided with the second blind hole of intercommunication blind hole between two step portion 62b along the pivot, blind hole and second blind hole constitute jointly second infusion passageway 621, the pivot is kept away from step portion 62 b's tip is provided with the external screw thread, and a plurality of blades pass through the external screw thread setting in the pivot.
The guide hole 612 is communicated with the guide hole 61a-2, as a preferred embodiment, the guide hole 612 is arranged along the radial direction of the rotating shaft, one end of the guide hole 612, which is far away from the rotating shaft, is provided with a threaded hole 6120 which is expanded outwards, a locking piece 67 is connected in the threaded hole, a through hole for the thrust rod 64 to pass through is arranged on the locking piece, the pressing rod is provided with a thrust step 641, the elastic piece 65 is a pressure spring which is sleeved on the pressing rod 64, one end of the pressure spring is pressed against the thrust step 641, and the other end of the pressure spring is pressed against the locking piece 67.
The tip of pivot has fixed cover 631 through threaded connection, is provided with cavity 6310 in the fixed cover, and the blade evenly sets up on the circumference lateral wall of fixed cover 631, is provided with on the fixed cover circumference lateral wall one to correspond with the blade and with a plurality of liquid way holes 6312 of the inside intercommunication of blade, goes out liquid hole 630 on every blade and is linked together with the liquid way hole 6312 that corresponds, and is concrete, goes out liquid hole 630 and sets up on the downstream face of blade.
It can be understood that, can promote the pivot through the blade and rotate when waste water flows to can overcome the resistance motion of pressure spring and piezoelectric element through cam drive press lever, but can hinder the pivot when the resistance of pressure spring is too big and rotate, thereby the precision of influence detection waste water flow, in order to reduce the influence to detecting the precision as far as, guide bar, guiding hole and spring set up through following mode of setting: the cam height h1, the spring elastic coefficient k, the radius r1 of the guide hole 612, the depth h2 of the guide hole 612 and the depth h3 of the threaded hole 6120, wherein 5N is more than or equal to k h1-2 pi r1 (h2-h3) mu and more than or equal to 3N, 10N is more than or equal to k h1-2 pi r1 (h2-h3) mu and wherein mu is a friction factor, and the adjustment coefficient is in a value range of 0.186-8.763; through the limiting mode, the flow of the wastewater can be accurately measured, so that the dosage of the added medicine can be accurately controlled, and the utilization rate of the medicine is improved.
Further, the adjusting tank 1 is also provided with a plurality of water inlet pipelines 7, the water inlet pipelines 7 are sequentially connected with waste water output ports of different procedures of tuber mustard production, and each water inlet pipeline 7 is provided with a flow sensor 71.
Further, the drug solution preparing device comprises a control device 9, a water pump 8 is arranged between the drug solution preparing container 60 and the drug adding device 6, and the control device 9 is connected with the plurality of flow sensors 71, the water pump 8 and the piezoelectric element 66.
Example two
Further, referring to fig. 7, as a specific embodiment, the present invention also provides a method for treating agricultural wastewater based on multi-stage treatment, which is a method for treating tuber mustard wastewater using the apparatus for treating agricultural wastewater based on multi-stage treatment, comprising the following steps:
step one, removing residues and sundries from waste water generated in the production of tuber mustard, then conveying the waste water into an adjusting tank 1, and mixing the waste water with high salinity and the waste water with low salinity in the adjusting tank.
Step two, preparing a medicine solution with a proper concentration in a medicine solution preparation container 60, mixing the wastewater in a wastewater regulating reservoir, conveying the wastewater in the regulating reservoir to a dephosphorization sedimentation tank 2 through a water pump, and adding the prepared liquid medicine into the wastewater through a medicine adding device 6 when the wastewater passes through a water pipeline.
Step three, the wastewater is sequentially treated by a hydrolysis acidification tank 3 and a CASS tank 4, so that the wastewater meets the discharge standard; specifically, referring to fig. 1, after passing through a phosphorus removal sedimentation tank, the wastewater passes through a hydrolysis acidification tank 3, macromolecular and nondegradable organic matters are degraded into micromolecular organic matters by hydrolytic bacteria and acidification bacteria in the hydrolysis acidification tank, and then ammonia nitrogen, residual organic matters and a small amount of total phosphorus in the wastewater are removed by a CASS tank; certainly, an anaerobic contact tank and an anaerobic sedimentation tank 10 can be arranged between the hydrolysis acidification tank and the CASS tank, sludge containing strains is arranged in the anaerobic contact tank, and the COD in the wastewater is removed by treating the wastewater with anaerobic microorganisms; then inputting the wastewater into an anaerobic sedimentation tank, flocculating and settling the wastewater, and adding a proper amount of polymeric ferric sulfate and polyacrylamide into the anaerobic sedimentation tank, wherein as a preferred embodiment, a drug solution preparation container 60 and the drug adding device 6 can be arranged between the water pipelines of the anaerobic contact tank and the anaerobic sedimentation tank to feed the polymeric ferric sulfate and the polyacrylamide, and the effect of improving the utilization rate of the drug can be achieved.
Before the step one, the method further comprises the following steps: the control device acquires the amount of wastewater generated in each process by acquiring the detection values of the flow sensors 71 arranged on the plurality of water inlet pipelines of the regulating reservoir 1, so that the concentration of nitrogen and phosphorus in the wastewater mixed in the regulating reservoir is acquired.
In the second step, the water pump 8 conveys the drug solution in the drug solution preparation container 60 to the blades to flow out through the liquid outlet holes 630 on the blades, and the wastewater can push the rotating shaft to rotate when passing through the blades 63, so that the mixing effect of the drug solution and the wastewater can be improved.
In the second step, when the wastewater passes through the blade 63, the rotating shaft can be pushed to rotate, and when the cam 623 on the rotating shaft passes through and leaves the pressing rod, the pressing rod can be pushed to press the piezoelectric element in a reciprocating manner under the cooperation of the elastic element, so that the piezoelectric element generates voltage, and the larger the water flow of the wastewater is, the larger the voltage which can be generated by the piezoelectric element is, and the flow of the wastewater can be detected.
In the second step, the control device can control the power of the water pump 8 and the addition amount of the medicament according to the concentration of nitrogen and phosphorus in the wastewater and the wastewater flow detected by the medicament adding device 6.
And step four is carried out after the step three, and the wastewater obtained in the step three is subjected to one-step filtration treatment by adopting a filter.
The filter comprises a first filter layer, a second filter layer and a third filter layer; the first filtering layer is an adsorptive flexible net; the second filter layer is a filter paper layer; the third filter layer is a microporous tube filter.
The adsorptive flexible net is formed by adding activated carbon powder into silk threads of a pure cotton filter screen in the winding and weaving process of the pure cotton filter screen, and can better perform an adsorption effect while filtering. The absorbent flexible webPore diameter of
0.25-0.68mm, and the specific surface area S of the activated carbon powder is 455-870m2And the surface coverage eta of the active carbon powder on the pure cotton filter screen is 85-96 percent. The surface coverage of the activated carbon powder on the pure cotton filter screen refers to the ratio of the area of the pure cotton filter screen surface covered by the activated carbon powder to the total area of the pure cotton filter screen surface.
In order to further improve the filtering effect, the pore diameter of the adsorptive flexible net
The specific surface area S of the activated carbon powder and the surface coverage eta of the activated carbon powder on a pure cotton filter screen satisfy the following empirical relationship:
wherein alpha is a relation coefficient and has a value range of 2.61-4.92.
The thickness d of the filter paper layer is 1.32-1.56 mm. The micropore pipe is a ceramic micropore pipe.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features and the technical features (but not limited to) having similar functions disclosed in the present application are mutually replaced to form the technical solution.
Claims (7)
1. The agricultural wastewater treatment device based on multi-stage filtration is characterized by comprising a regulating tank (1), a phosphorus removal sedimentation tank (2), a hydrolysis acidification tank (3) and a CASS (Cyclic activated sludge System) tank (4) which are sequentially communicated through a water pipeline (5), wherein at least one medicament adding device (6) is arranged on the water pipeline between the regulating tank (1) and the phosphorus removal sedimentation tank (2), and the medicament adding device (6) is also communicated with a medicament solution preparation container (60); the medicament adding device (6) comprises a base (61) arranged on the inner side wall of the infusion pipeline and a rotating shaft (62) rotatably arranged on the base (61), a plurality of blades (63) are uniformly arranged on the rotating shaft (62) around the rotating shaft, and when water flows through the pipeline, the blades (63) can be pushed to rotate the rotating shaft (62); the base (61) is provided with a first transfusion channel (610) communicated with the medicine solution preparation container (60), the blade (63) is provided with a plurality of liquid outlet holes (630), and the rotating shaft (62) is internally provided with a second transfusion channel (621) communicated with the first transfusion channel (610) and the liquid outlet holes (630); the medicament adding device (6) comprises an outer tube (6 a) which is coaxial with the rotating shaft (62), two ends of the outer tube (6 a) are provided with connecting flanges (6 a 1), and the base (61) is arranged on the inner side wall of the outer tube (6 a); the base (61) is provided with a guide hole (612) capable of being communicated with the rotating shaft from the circumferential side wall of the outer tube (6 a) to the rotating shaft (62), a pressing rod (64) is arranged in the guide hole (612) in a guiding mode, a cam (623) corresponding to the end portion of the pressing rod (64) is arranged on the circumferential side wall of the rotating shaft (62), an elastic piece (65) capable of pressing the pressing rod (64) to the rotating shaft (62) is arranged in the guide hole (612), and a piezoelectric piece (66) is arranged at the end portion, far away from the rotating shaft (62), of the guide hole (612).
2. The agricultural wastewater treatment device based on multistage filtration of claim 1, wherein the adjusting tank (1) is further provided with a plurality of water inlet pipelines (7), the water inlet pipelines (7) are sequentially connected with wastewater outlets of different processes of tuber mustard production, and each water inlet pipeline (7) is provided with a flow sensor (71).
3. The agricultural wastewater treatment device based on multistage filtration of claim 2, further comprising a control device (9), wherein a water pump (8) is arranged between the drug solution preparation container (60) and the drug dosing device (6), and the control device (9) is connected with the plurality of flow sensors (71), the water pump (8) and the piezoelectric element (66).
4. A method for treating agricultural wastewater based on multi-stage filtration, which is characterized in that the method for treating agricultural wastewater based on multi-stage filtration uses the device for treating agricultural wastewater based on multi-stage filtration as claimed in any one of claims 1 to 3, and comprises the following steps:
step one, removing residues and sundries from waste water generated in the production of tuber mustard, then conveying the waste water into an adjusting tank (1), and mixing the waste water with high salinity and the waste water with low salinity in the adjusting tank;
secondly, preparing a medicine solution with a proper concentration in a medicine solution preparation container (60), mixing the wastewater in a wastewater regulating reservoir, conveying the wastewater in the regulating reservoir to a dephosphorization sedimentation tank (2) through a water pump, and adding the prepared liquid medicine into the wastewater through a medicine adding device (6) when the wastewater passes through a water pipeline;
step three, the wastewater is sequentially treated by a hydrolysis acidification tank (3) and a CASS tank (4), so that the wastewater meets the discharge standard; in the second step, when the wastewater passes through the blades (63), the rotating shaft is pushed to rotate, and when the cam (623) on the rotating shaft passes through and leaves the pressing rod, the pressing rod is pushed to press the piezoelectric element in a reciprocating manner under the coordination of the elastic element, so that the piezoelectric element generates voltage, and the larger the water flow of the wastewater is, the larger the voltage generated by the piezoelectric element is, and the flow rate of the wastewater can be detected.
5. The method for treating agricultural wastewater based on multistage filtration according to claim 4, further comprising the following steps before the first step: the control device acquires the amount of wastewater generated in each process by acquiring the detection values of the flow sensors (71) arranged on the plurality of water inlet pipelines of the regulating reservoir (1), so that the concentration of nitrogen and phosphorus in the wastewater mixed in the regulating reservoir is acquired.
6. The method for treating agricultural wastewater based on multistage filtration as claimed in claim 5, wherein in the second step, the water pump (8) pumps the drug solution disposed in the drug solution preparation container (60) out through the liquid outlet holes (630) on the blades, and the wastewater pushes the rotating shaft to rotate when passing through the blades (63), thereby improving the mixing effect of the drug solution and the wastewater.
7. The method for treating agricultural wastewater based on multistage filtration according to claim 6, wherein in the second step, the control device controls the power of the water pump (8) according to the concentration of nitrogen and phosphorus in the wastewater and the wastewater flow detected by the chemical adding device (6), and controls the addition amount of the chemical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538632.3A CN113248045B (en) | 2021-05-18 | 2021-05-18 | Agricultural wastewater treatment device and method based on multistage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110538632.3A CN113248045B (en) | 2021-05-18 | 2021-05-18 | Agricultural wastewater treatment device and method based on multistage treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113248045A CN113248045A (en) | 2021-08-13 |
| CN113248045B true CN113248045B (en) | 2021-12-07 |
Family
ID=77182332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110538632.3A Active CN113248045B (en) | 2021-05-18 | 2021-05-18 | Agricultural wastewater treatment device and method based on multistage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113248045B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113968647B (en) * | 2021-12-27 | 2022-03-29 | 广东新泰隆环保集团有限公司 | Multiple combination formula sewage treatment device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5085399A (en) * | 1987-09-30 | 1992-02-04 | Toto Ltd. | Automatically operating valve for regulating water flow and faucet provided with said valve |
| JP2008249002A (en) * | 2007-03-30 | 2008-10-16 | Fujikin Inc | Piezoelectric element driving control valve |
| CN201427886Y (en) * | 2009-04-21 | 2010-03-24 | 廖一 | Pipeline type chemical dosing device |
| CN103073159A (en) * | 2013-01-30 | 2013-05-01 | 南京绿岛环境工程有限公司 | Treatment process for tuber mustard waste water |
| CN103101984A (en) * | 2013-02-06 | 2013-05-15 | 常涛 | System for quantitatively adding medicament by water delivery pipeline |
| CN203173870U (en) * | 2012-12-26 | 2013-09-04 | 宇昊丹 | Waste water treatment equipment |
| CN203880209U (en) * | 2014-06-17 | 2014-10-15 | 瑞安市米勒卫浴有限公司 | Light-emitting device of LED faucet with flow indicating function |
| CN106830448A (en) * | 2017-04-25 | 2017-06-13 | 苏州高精特专信息科技有限公司 | Paper-making sewage treatment installation |
| JP2017215278A (en) * | 2016-06-02 | 2017-12-07 | 株式会社日立ハイテクソリューションズ | Detector of ultrasonic flowmeter |
| RU2656038C1 (en) * | 2017-07-21 | 2018-05-30 | федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" | Device for adjustment of the monitoring gas flow |
| CN109336216A (en) * | 2018-10-23 | 2019-02-15 | 林海辉 | A kind of big flow sterilizing unit |
| CN111133239A (en) * | 2017-09-25 | 2020-05-08 | 株式会社富士金 | Valve device, flow rate adjusting method, fluid control device, flow rate controlling method, semiconductor manufacturing device, and semiconductor manufacturing method |
-
2021
- 2021-05-18 CN CN202110538632.3A patent/CN113248045B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5085399A (en) * | 1987-09-30 | 1992-02-04 | Toto Ltd. | Automatically operating valve for regulating water flow and faucet provided with said valve |
| JP2008249002A (en) * | 2007-03-30 | 2008-10-16 | Fujikin Inc | Piezoelectric element driving control valve |
| CN201427886Y (en) * | 2009-04-21 | 2010-03-24 | 廖一 | Pipeline type chemical dosing device |
| CN203173870U (en) * | 2012-12-26 | 2013-09-04 | 宇昊丹 | Waste water treatment equipment |
| CN103073159A (en) * | 2013-01-30 | 2013-05-01 | 南京绿岛环境工程有限公司 | Treatment process for tuber mustard waste water |
| CN103101984A (en) * | 2013-02-06 | 2013-05-15 | 常涛 | System for quantitatively adding medicament by water delivery pipeline |
| CN203880209U (en) * | 2014-06-17 | 2014-10-15 | 瑞安市米勒卫浴有限公司 | Light-emitting device of LED faucet with flow indicating function |
| JP2017215278A (en) * | 2016-06-02 | 2017-12-07 | 株式会社日立ハイテクソリューションズ | Detector of ultrasonic flowmeter |
| CN106830448A (en) * | 2017-04-25 | 2017-06-13 | 苏州高精特专信息科技有限公司 | Paper-making sewage treatment installation |
| RU2656038C1 (en) * | 2017-07-21 | 2018-05-30 | федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный авиационный технический университет" | Device for adjustment of the monitoring gas flow |
| CN111133239A (en) * | 2017-09-25 | 2020-05-08 | 株式会社富士金 | Valve device, flow rate adjusting method, fluid control device, flow rate controlling method, semiconductor manufacturing device, and semiconductor manufacturing method |
| CN109336216A (en) * | 2018-10-23 | 2019-02-15 | 林海辉 | A kind of big flow sterilizing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113248045A (en) | 2021-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sheng et al. | Removal of Trace Pharmaceuticals from Water using coagulation and powdered activated carbon as pretreatment to ultrafiltration membrane system | |
| Bjorge et al. | Performance assessment of electrospun nanofibers for filter applications | |
| EP1031372B1 (en) | Method for inhibiting growth of bacteria or sterilizing around separating membrane | |
| JP5172082B2 (en) | Treatment method of treated water | |
| US9856160B2 (en) | Biological two-stage contaminated water treatment system | |
| CN113248045B (en) | Agricultural wastewater treatment device and method based on multistage treatment | |
| CN101462811A (en) | Biological treatment method and apparatus for organic containing water | |
| Daels et al. | The use of electrospun flat sheet nanofibre membranes in MBR applications | |
| TW201300330A (en) | Method for treatment of organic substance-containing water drainage and device for treatment of organic substance-containing water drainage | |
| BR112020017168A2 (en) | SYSTEMS AND METHODS FOR TREATING LITTLE ENVIRONMENTAL IMPACT OF CONTAMINATED FLUID | |
| CN102209689A (en) | Water treatment device and water treatment method | |
| CN102381804A (en) | Process for recycling printing and dyeing wastewater | |
| Cui et al. | A new efficient technology for refractory phenol-formaldehyde resin wastewater treatment | |
| CN102976549B (en) | Water treatment method and water treatment device | |
| Kuczman et al. | Influence of hydraulic retention time on the anaerobic treatment of cassava starch extraction effluent using a one-phase horizontal reactor | |
| ES2912572T3 (en) | Method and system for anaerobic treatment of wastewater with organic load | |
| JP2016123920A (en) | Wastewater treatment apparatus and method | |
| Razavi et al. | Industrial wastewater treatment by using of membrane | |
| Pachauri et al. | Removal of amoxicillin in wastewater using adsorption by powdered and granular activated carbon and oxidation with hydrogen peroxide | |
| Zsirai et al. | Biological treatment and thickening with a hollow fibre membrane bioreactor | |
| KR101461592B1 (en) | Wastewater Disposal Apparatus with Turbulence Wings | |
| US20150368130A1 (en) | Process for purification treatment of wastewater and apparatus for purification treatment of wastewater | |
| CN207435142U (en) | A kind of adjusting anaerobism integrated pond of parts cleaning waste water | |
| JP7173718B2 (en) | Wastewater treatment method and wastewater treatment equipment | |
| Barceló et al. | Treating emerging contaminants (pharmaceuticals) in wastewater and drinking water treatment plants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |