CN112679044A - System and method for treating glyphosate production wastewater - Google Patents
System and method for treating glyphosate production wastewater Download PDFInfo
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- CN112679044A CN112679044A CN202011565111.9A CN202011565111A CN112679044A CN 112679044 A CN112679044 A CN 112679044A CN 202011565111 A CN202011565111 A CN 202011565111A CN 112679044 A CN112679044 A CN 112679044A
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Abstract
The invention relates to a system and a method for treating glyphosate production wastewater, which comprises the following steps: anaerobic baffle reactor, movable plug body and sludge port. Set up movable cock body in anaerobism baffling board reactor, set up a plurality of holes that are used for waste water to pass through on the activity cock body, when the setting of activity cock body does not obstruct the waste water circulation, can reduce the solid sludge volume in the reaction chamber as required, move down to reaction chamber middle part position in the reaction chamber vertical direction near the water inlet through adjusting the activity cock body, make the interior solid sludge of reaction chamber discharge along the mud opening, reduce the solid sludge who is located the reaction chamber, with the waste water velocity in this reaction chamber of increase, reduce the dwell time of waste water in first reaction chamber, effectively alleviate the waste water treatment load in first reaction chamber, make it balanced with other reaction chamber waste water treatment loads, finally guarantee anaerobism baffling board reactor overall treatment waste water efficiency, the whole life of extension anaerobism baffling board reactor.
Description
Technical Field
The invention relates to the technical field of agricultural wastewater treatment, in particular to a treatment system and method for glyphosate production wastewater.
Background
The chemical name of the glyphosate is N-phosphonomethylglycine, and the glyphosate is used as a high-efficiency and low-toxicity herbicide; the waste water of glyphosate production has the characteristics of high concentration and serious pollution, the waste water contains methanol, formaldehyde, glyphosate and salts, the production of the waste water is from a methanol recovery process and a deacidification process of a glyphosate production process, the two waste waters are mixed to form the glyphosate waste water, the domestic glyphosate production capacity is about 60 ten thousand t/year, and the glyphosate waste water is still increased at a high speed at a growth speed of 10 percent per year, the main production processes of the glyphosate comprise a DIA method and a dimethyl ester method, and according to statistics, about 4.5 t of glyphosate mother liquor and 10 to 12t of phosphorus-containing waste water are generated per 1t of glyphosate produced.
As for the treatment of waste water from glyphosate production, which is a problem faced by glyphosate manufacturers, the current research reports on the technology of waste water treatment from glyphosate production indicate that the anaerobic baffle plate reactor (ABR) has obvious effect on the treatment of waste water from certain biochemical plants in Shanghai, the anaerobic baffle plate reactor is characterized in that a series of baffle plates vertically arranged are used in the reactor to divide the reactor into a plurality of reaction chambers connected in series, each reaction chamber can be regarded as a relatively independent upflow sludge bed system, the water flow flows around the baffle plates to increase the total length of the water flow in the reactor, and the baffle plates block and the sludge subside, so that microorganism solids are effectively retained in the reactor to effectively decompose the organic matters in the glyphosate waste water, however, in practical application, the first grid in the reactor needs to bear a local wastewater treatment load far greater than the average wastewater treatment load, so that the overall wastewater treatment efficiency of the anaerobic baffle plate reactor is reduced, and the overall anaerobic baffle plate reactor gradually fails in the past.
Disclosure of Invention
Therefore, the invention provides a system and a method for treating glyphosate production wastewater, which are used for solving the problem that the whole wastewater treatment efficiency of an anaerobic baffle plate reactor is reduced because a first grid in the reactor needs to bear a local wastewater treatment load which is far greater than an average wastewater treatment load in the prior art.
The invention provides a treatment system for glyphosate production wastewater, which comprises:
the anaerobic baffle plate reactor provides a reaction site for decomposing organic matters in the glyphosate production wastewater, a movable plug body for controlling the amount of solid sludge in the reaction chamber is arranged in the reaction chamber close to the water inlet in the anaerobic baffle plate reactor, and a plurality of holes for wastewater to pass through are formed in the movable plug body;
a sludge through hole matched with the movable plug body is formed in the bottom wall of the reaction chamber, close to the water inlet, in the anaerobic baffle plate reactor, and a valve is installed at the sludge through hole;
the regulating tank is communicated with the water inlet of the anaerobic baffle plate reactor and is used for receiving the glyphosate production wastewater and regulating the nutrient content in the glyphosate production wastewater;
the biogas receiving tank is communicated with the gas outlet of the anaerobic baffle plate reactor and is used for receiving biogas generated in the anaerobic baffle plate reactor;
and the oxidation reactor is communicated with a water outlet of the anaerobic baffle plate reactor, is used for receiving the wastewater after anaerobic treatment of the anaerobic baffle plate reactor and is used for secondarily decomposing organic matters in the wastewater.
Preferably, the anaerobic baffle reactor is internally and symmetrically provided with frame bodies for limiting the movable plug body in a reaction chamber close to the water inlet, and the two frame bodies are respectively and fixedly connected with the symmetrical side walls in the reaction chamber.
Preferably, the frame body is composed of a frame plate and frame strips, the frame strips are integrally formed and connected to two ends of the frame plate, and the side wall of the movable plug body is in close contact with the frame body.
Preferably, a driving assembly for driving the movable plug body to move in the reaction chamber along the vertical direction is arranged at the upper end of the reaction chamber, close to the water inlet, in the anaerobic baffle plate reactor.
Preferably, drive assembly includes the support frame, install the motor on the support frame, the stiff end of the flexible loop bar of output hub connection of motor, the flexible end fixed connection transition screw rod's of flexible loop bar one end, the other end of transition screw rod pass the reaction chamber upper wall with the activity cock body rotates to be connected, reaction chamber upper wall perforation department be provided with the internal thread of transition screw rod looks adaptation, transition screw rod and reaction chamber upper wall perforation department threaded connection.
Preferably, the transition screw rod and with the movable stopper body rotate the one end fixedly connected with of being connected connect the round handle, set up in the movable stopper body with connect the cavity of round handle looks adaptation, connect the round handle rotate connect in the cavity.
Preferably, a mudguard is rotatably connected to the lower end of the baffle plate in the anaerobic baffle plate reactor and close to the water inlet.
Preferably, the fender is a rubber plate, and the lower end of the fender and the side facing the water flow introduction direction are arc-shaped wall surfaces.
Preferably, just be provided with the oxygen coil pipe in the oxidation reactor, the oxygen coil pipe is circular pipe, evenly seted up the venthole along the annular on the oxygen coil pipe, the inlet end joint of oxygen coil pipe in the inlet port of oxidation reactor, fixedly connected with T shape connecting plate on the lateral wall of oxygen coil pipe, the diaphragm of T shape connecting plate with oxidation reactor's inside wall fixed connection.
The invention provides a method for treating glyphosate production wastewater, which comprises the following steps:
step 1: introducing glyphosate production wastewater into the regulating reservoir, adding nutrient substances which are easy for anaerobic microorganism propagation into the regulating reservoir, and introducing the glyphosate production wastewater after blending into the anaerobic baffle reactor from the regulating reservoir;
step 2: in the anaerobic baffle plate reactor, the movable plug body is adjusted to move downwards to the middle position of the reaction chamber in the vertical direction in the reaction chamber close to the water inlet, so that solid sludge in the reaction chamber is discharged along the sludge through hole, the solid sludge in the reaction chamber is reduced, and the flow speed of wastewater in the reaction chamber is increased, the temperature in the anaerobic baffle plate reactor is 35 ℃, and the wastewater participates in microbial anaerobic fermentation in the process of flowing around the baffle plate in the anaerobic baffle plate reactor, so that organic matters in the wastewater are effectively decomposed;
and step 3: step 2, methane decomposed in the anaerobic baffle plate reactor enters the methane receiving tank, decomposed waste water is introduced into the oxidation reactor under the action of pump force, oxygen is introduced into the oxidation reactor at the same time, and secondary oxidative decomposition is carried out on organic matters in the waste water, so that macromolecular organic matters are further reduced;
and 4, step 4: and detecting the CODcr value of the wastewater discharged from the oxidation reactor, discharging the wastewater after the CODcr value is qualified, and continuously performing circular treatment in a treatment system if the CODcr value is unqualified.
Compared with the prior art, the invention has the advantages that the movable plug body is arranged in the anaerobic baffle plate reactor, the movable plug body is provided with a plurality of holes for wastewater to pass through, the anaerobic baffle plate reactor uses a series of baffle plates which are vertically arranged in the reactor to divide the reactor into a plurality of reaction chambers which are connected in series, each reaction chamber can be regarded as a relatively independent upflow sludge bed system, wastewater flows around the baffle plates to increase the total length of the water flow flowing in the reactor, and microorganism solids are effectively intercepted in the reactor by the blocking of the baffle plates and the settling action of sludge, so that organic matters in glyphosate wastewater are effectively decomposed, the arrangement of the movable plug body does not obstruct the circulation of wastewater, the amount of solid sludge in the reaction chambers can be reduced as required, and the bottom wall of the reaction chamber in the anaerobic baffle plate reactor and close to a water inlet is provided with a sludge port which is matched with the movable plug body, a valve is arranged at the sludge through hole, the movable plug body is adjusted to move downwards to the middle position of the reaction chamber in the vertical direction in the reaction chamber close to the water inlet, so that solid sludge in the reaction chamber is discharged along the sludge through hole, the solid sludge in the reaction chamber is reduced, the flow speed of wastewater in the reaction chamber is increased, the retention time of wastewater in the first reaction chamber is reduced, the wastewater treatment load in the first reaction chamber is effectively reduced, the wastewater treatment load is balanced with the wastewater treatment load of other reaction chambers, the overall wastewater treatment efficiency of the anaerobic baffle plate reactor is finally ensured, and the overall service life of the anaerobic baffle plate reactor is prolonged;
the adjusting tank is communicated with a water inlet of the anaerobic baffle plate reactor and is used for receiving the glyphosate production wastewater and adjusting the nutrient content in the glyphosate production wastewater, the glyphosate production wastewater is introduced into the adjusting tank, nutrient substances which are easy to propagate by anaerobic microorganisms are added into the adjusting tank, and the glyphosate production wastewater after being blended is introduced into the anaerobic baffle plate reactor 1 from the adjusting tank;
the methane receiving tank is communicated with the air outlet of the anaerobic baffle plate reactor and is used for receiving methane generated in the anaerobic baffle plate reactor;
and the oxidation reactor is communicated with a water outlet of the anaerobic baffle plate reactor, is used for receiving the wastewater after anaerobic treatment of the anaerobic baffle plate reactor and secondarily decomposing organic matters in the wastewater, and simultaneously introduces oxygen into the oxidation reactor under the action of pump force to secondarily oxidize and decompose the organic matters in the wastewater so as to further reduce macromolecular organic matters.
Furthermore, frame bodies for limiting the movable plug bodies are symmetrically arranged in the reaction chamber close to the water inlet in the anaerobic baffle plate reactor, and the two frame bodies are fixedly connected with the symmetrical side walls in the reaction chamber respectively. The frame body is arranged to limit the moving range of the movable plug body, and the movable plug body can conveniently slide on the frame body under the action of external force.
Furthermore, the frame body is composed of a frame plate and frame strips, the frame strips are connected to two ends of the frame plate in an integrated forming mode, the side wall of the movable plug body is in close contact with the frame body, the movable plug body can slide between the frame plate under the action of external force, and the frame strips play a role in limiting the sliding range of the movable plug body.
Furthermore, the upper end of the reaction chamber, which is close to the water inlet, in the anaerobic baffle reactor is provided with a driving assembly for driving the movable plug body to move in the reaction chamber along the vertical direction, and the movable plug body can be driven to move in the reaction chamber along the vertical direction through the work of the driving assembly.
Further, drive assembly includes the support frame, install the motor on the support frame, the stiff end of the flexible loop bar of output hub connection of motor, the flexible end fixed connection transition screw rod's of flexible loop bar one end, the other end of transition screw rod passes the reaction chamber upper wall and is connected with the rotation of activity cock body, reaction chamber upper wall perforation department is provided with the internal thread with transition screw rod looks adaptation, transition screw rod and reaction chamber upper wall perforation department threaded connection, work through the motor, it is rotatory to drive flexible loop bar, flexible loop bar is rotatory to drive the transition screw rod and carries out or upper or lower displacement at the reaction chamber upper wall, flexible loop bar self shortens thereupon simultaneously or extends, drive the displacement that the activity cock body goes on or goes up or down from this.
Furthermore, transition screw rod and with the activity cock body rotate the one end fixedly connected with of being connected connect the round handle, set up in the activity cock body and connect the cavity of round handle looks adaptation, connect the round handle and rotate to connect in the cavity, the transition screw rod is radially doing the relative rotation with the junction of activity cock body under the exogenic action, axial position relatively fixed, make the transition screw rod can drive the displacement that the activity cock body goes on or goes up or down at rotatory in-process from this.
Further, just be close to the baffling board lower extreme of water inlet and rotate in the anaerobism baffling board reactor and be connected with the fender, the setting of fender is used for cooperating activity cock body work and uses, and solid mud is along mud opening exhaust in-process in the reaction chamber for the fender keeps parallel with the baffling board, prevents that solid mud from getting into the gap that the baffling board formed, and at waste water entering in-process, under the rivers effort, the fender forms certain angle with the baffling board, so that rivers pass through smoothly.
Furthermore, the fender is a rubber plate, and the lower end of the fender and the side facing the water flow inlet direction are arc-shaped wall surfaces. The rubber plate can closely contact with the bottom wall of the anaerobic baffle reactor, so that solid sludge is prevented from entering a gap formed by the baffle, and the fender and the baffle form a certain angle under the action of water flow by the arc-shaped avoidance design, so that the water flow can smoothly pass through the baffle.
Furthermore, an oxygen coil is arranged in the oxidation reactor, the oxygen coil is a circular pipe, air outlet holes are uniformly formed in the oxygen coil along the annular shape, the air inlet end of the oxygen coil is clamped in the air inlet port of the oxidation reactor, a T-shaped connecting plate is fixedly connected to the side wall of the oxygen coil, a transverse plate of the T-shaped connecting plate is fixedly connected with the inner side wall of the oxidation reactor, the oxygen coil is used for uniformly introducing oxygen into wastewater in the oxidation reactor, so that the oxygen is fully contacted with the wastewater, and the aerobic decomposition of organic matters is facilitated, fix the oxygen coil pipe in oxidation reactor through T shape connecting plate, oxygen is discharged by the venthole along circular tubulose oxygen coil pipe, and the multichannel air current that the discharge is even and form in waste water plays the effect that promotes the inner loop to waste water, further increases oxygen and waste water and fully contacts, is favorable to carrying out the organic matter aerobic decomposition.
Drawings
FIG. 1 is a schematic diagram of the configuration of a glyphosate production wastewater treatment system according to the present invention;
FIG. 2 is a top view of the movable plug body of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of the invention at B of FIG. 1;
FIG. 5 is a top view of the oxygen coil of the present invention.
In the figure: the system comprises a 1-anaerobic baffle reactor, a 2-movable plug body, a 3-sludge through port, a 4-regulating tank, a 5-biogas receiving tank, a 6-oxidation reactor, a 7-frame body, a 701-frame plate, a 702-frame strip, an 8-driving assembly, a 801-supporting frame, an 802-motor, a 803-telescopic loop bar, an 804-transition screw rod, a 9-connecting round handle, a 10-mudguard, an 11-oxygen coil pipe, a 12-air outlet and a 13-T-shaped connecting plate.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
Referring to fig. 1, which is a schematic structural diagram of a system for treating glyphosate industrial wastewater according to the present invention, the system for treating glyphosate industrial wastewater comprises:
an anaerobic baffle plate reactor 1, which provides a reaction site for decomposing organic matters in glyphosate production wastewater, a movable plug body 2 for controlling the amount of solid sludge in the reaction chamber is arranged in the reaction chamber close to a water inlet in the anaerobic baffle plate reactor 1, as shown in figure 2, a plurality of holes for wastewater to pass through are arranged on the movable plug body 2, a series of baffle plates vertically arranged are used in the anaerobic baffle plate reactor 1 to divide the reactor into a plurality of reaction chambers connected in series, each reaction chamber can be regarded as a relatively independent upflow sludge bed system, wastewater water flows around the baffle plates to increase the total length of the water flow flowing in the reactor, and the baffle plates block and the sludge sedimentation effect, microbial solids are effectively retained in the reactor, so that the organic matters in the glyphosate wastewater are effectively decomposed, the movable plug body 2 is arranged to reduce the amount of solid sludge in the reaction chamber as required while not obstructing the circulation of wastewater, a sludge through hole 3 matched with the movable plug body 2 is arranged in the anaerobic baffle plate reactor 1 and on the bottom wall of the reaction chamber close to the water inlet, a valve is arranged at the sludge through hole 3, the movable plug body 2 is adjusted to move downwards to the middle position of the reaction chamber in the vertical direction in the reaction chamber close to the water inlet, so that the solid sludge in the reaction chamber is discharged along the sludge through hole 3, the solid sludge in the reaction chamber is reduced to increase the flow rate of wastewater in the reaction chamber, the retention time of wastewater in the first reaction chamber is reduced, the wastewater treatment load in the first reaction chamber is effectively reduced, the wastewater treatment load is balanced with that of other reaction chambers, and the wastewater treatment efficiency of the anaerobic baffle plate reactor 1 is finally ensured, the service life of the whole anaerobic baffle reactor 1 is prolonged;
the adjusting tank 4 is communicated with a water inlet of the anaerobic baffle plate reactor 1 and is used for receiving glyphosate production wastewater and adjusting the nutrient content in the glyphosate production wastewater, the glyphosate production wastewater is introduced into the adjusting tank 4, nutrient substances which are easy to propagate by anaerobic microorganisms are added into the adjusting tank 4, and then the mixed glyphosate production wastewater is introduced into the anaerobic baffle plate reactor 1 from the adjusting tank 4;
the methane receiving tank 5 is communicated with the air outlet of the anaerobic baffle reactor 1 and is used for receiving methane generated in the anaerobic baffle reactor 1;
and the oxidation reactor 6 is communicated with a water outlet of the anaerobic baffle reactor 1, is used for receiving the wastewater subjected to anaerobic treatment by the anaerobic baffle reactor 1 and secondarily decomposing organic matters in the wastewater, and is introduced into the oxidation reactor 6 under the action of pump force, and simultaneously introduced into the oxidation reactor 6 to secondarily oxidize and decompose the organic matters in the wastewater, so that macromolecular organic matters are further reduced.
Referring to fig. 3, specifically, frame bodies 7 for limiting the movable plug body 2 are symmetrically arranged in a reaction chamber close to the water inlet in the anaerobic baffled reactor 1, and the two frame bodies 7 are respectively and fixedly connected with symmetrical side walls in the reaction chamber. The frame body 7 is arranged to limit the range of motion of the movable plug body 2, and at the same time, the movable plug body 2 slides on the frame body 7 under the action of external force.
Referring to fig. 3, specifically, the frame 7 is composed of a frame plate 701 and a frame strip 702, the frame strip 702 is integrally connected to two ends of the frame plate 701, a side wall of the movable plug 2 is in close contact with the frame 7, the movable plug 2 can slide between the frame plates 701 under the action of an external force, and the frame strip 702 limits the sliding range of the movable plug 2.
Referring to fig. 3, specifically, a driving assembly 8 for driving the movable plug 2 to move in the reaction chamber in the vertical direction is disposed at the upper end of the reaction chamber near the water inlet in the anaerobic baffle reactor 1, and the movable plug 2 can be driven to move in the reaction chamber in the vertical direction by the operation of the driving assembly 8.
Referring to fig. 3, specifically, the driving assembly 8 includes a supporting frame 801, a motor 802 is installed on the supporting frame 801, an output end of the motor 802 is connected to a fixed end of a telescopic rod 803, the telescopic end of the telescopic rod 803 is fixedly connected to one end of a transition screw 804, the other end of the transition screw 804 passes through an upper wall of the reaction chamber to be rotatably connected to the movable plug 2, an internal thread adapted to the transition screw 804 is disposed at a perforation of the upper wall of the reaction chamber, the transition screw 804 is in threaded connection with a perforation of the upper wall of the reaction chamber, the telescopic rod 803 is driven to rotate by the operation of the motor 802, the telescopic rod 803 rotates to drive the transition screw 804 to rotate and perform displacement on the upper wall of the reaction chamber or upward or downward, and the telescopic rod 803 shortens or extends to drive the movable plug 2 to perform displacement on the upper wall of the reaction chamber or downward, it will be understood by those skilled in the art that the fixed end and the telescopic end of the telescopic rods 803 are kept relatively fixed in the radial direction and are extended or shortened only in the axial direction under the action of an external force, so as to prevent the idle rotation during the rotation.
Referring to fig. 3, specifically, a connecting round handle 9 is fixedly connected to one end of the transition screw 804, which is rotatably connected to the movable plug body 2, a cavity matched with the connecting round handle 9 is formed in the movable plug body 2, the connecting round handle 9 is rotatably connected to the cavity, the connection point between the transition screw 804 and the movable plug body 2 rotates relatively in the radial direction under the action of an external force, and the axial position is relatively fixed, so that the transition screw 804 can drive the movable plug body 2 to move up or down in the rotating process.
Referring to fig. 4, specifically, a mudguard 10 is rotatably connected to the lower end of the baffle plate in the anaerobic baffle plate reactor 1 and close to the water inlet, the mudguard 10 is arranged to cooperate with the movable plug body 2 for use, and in the process of discharging solid sludge in the reaction chamber along the sludge through hole 3, the mudguard 10 is kept parallel to the baffle plate, so that the solid sludge is prevented from entering a gap formed by the baffle plate, and in the process of entering wastewater, the mudguard 10 forms a certain angle with the baffle plate under the action of water flow, so that water flow can pass smoothly.
Referring to fig. 4, specifically, the fender 10 is a rubber plate, and a lower end of the fender 10 facing a water flow direction is an arc-shaped wall surface. The rubber plate can be in close contact with the bottom wall of the anaerobic baffle reactor 1, so that solid sludge is prevented from entering a gap formed by the baffle, and the arc-shaped avoidance design facilitates that the mudguard 10 and the baffle form a certain angle under the action of water flow, so that the water flow can smoothly pass through the baffle.
Referring to fig. 5, specifically, an oxygen coil 11 is disposed in the oxidation reactor 6, the oxygen coil 11 is a circular tube, air outlets 12 are uniformly formed in the oxygen coil 11 along an annular shape, an air inlet end of the oxygen coil is clamped in the air inlet end of the oxidation reactor 6, a T-shaped connecting plate 13 is fixedly connected to a side wall of the oxygen coil 11, a transverse plate of the T-shaped connecting plate 13 is fixedly connected to an inner side wall of the oxidation reactor 6, the oxygen coil 11 is used for uniformly introducing oxygen into the wastewater in the oxidation reactor 6 to fully contact the oxygen with the wastewater, so as to facilitate decomposition of organic matters with oxygen, the oxygen coil 11 is fixed in the oxidation reactor 6 through the T-shaped connecting plate 13, the oxygen is discharged from the air outlets 12 along the circular tube-shaped oxygen coil 11, the discharged oxygen is uniform, and multiple paths of air flows formed in the wastewater play a role in pushing internal circulation of the wastewater, further increase the full contact of oxygen and wastewater, and is favorable for the aerobic decomposition of organic matters.
Referring to fig. 1, a method for treating glyphosate production wastewater comprises the following steps:
step 1: introducing glyphosate production wastewater into the regulating reservoir 4, adding nutrient substances which are easy to propagate anaerobic microorganisms into the regulating reservoir 4, and introducing the regulated glyphosate production wastewater into the anaerobic baffle reactor 1 from the regulating reservoir 4;
step 2: in the anaerobic baffle plate reactor 1, the movable plug body 2 is adjusted to move downwards to the middle position of the reaction chamber in the vertical direction in the reaction chamber close to the water inlet, so that solid sludge in the reaction chamber is discharged along the sludge through hole 3, the solid sludge in the reaction chamber is reduced, the flow speed of wastewater in the reaction chamber is increased, the temperature in the anaerobic baffle plate reactor 1 is 35 ℃, and the wastewater participates in microbial anaerobic fermentation in the process of flowing around the baffle plate in the anaerobic baffle plate reactor 1, so that organic matters in the wastewater are effectively decomposed;
and step 3: step 2, the biogas decomposed in the anaerobic baffle reactor 1 enters the biogas receiving tank 5, the decomposed wastewater is introduced into the oxidation reactor 6 under the action of pump force, and meanwhile, oxygen is introduced into the oxidation reactor 6 to carry out secondary oxidative decomposition on organic matters in the wastewater, so that macromolecular organic matters are further reduced;
and 4, step 4: and detecting the CODcr value of the wastewater discharged from the oxidation reactor 6, discharging the wastewater after the CODcr value is qualified, and continuously performing circular treatment in a treatment system after the CODcr value is unqualified.
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The glyphosate wastewater is treated by using the system and the process, wherein:
the temperature in the anaerobic baffle reactor is 35 ℃, and after detection,
the initial CODcr mass concentration of the glyphosate wastewater is as follows: 9000mg/L
After the glyphosate wastewater is treated by the system, the CODcr mass concentration is as follows: 170mg/L
The removal rate is: 98.1 percent.
Example 2
The glyphosate wastewater is treated by using the system and the process, wherein:
the temperature in the anaerobic baffle reactor is 35 ℃, and after detection,
the initial CODcr mass concentration of the glyphosate wastewater is as follows: 8000mg/L
After the glyphosate wastewater is treated by the system, the CODcr mass concentration is as follows: 160mg/L
The removal rate is: 98.0 percent.
Example 3
The glyphosate wastewater is treated by using the system and the process, wherein:
the temperature in the anaerobic baffle reactor is 35 ℃, and after detection,
the initial CODcr mass concentration of the glyphosate wastewater is as follows: 7000mg/L
After the glyphosate wastewater is treated by the system, the CODcr mass concentration is as follows: 130mg/L
The removal rate is: 98.1 percent.
Comparative example
The glyphosate wastewater is treated by using an anaerobic baffle reactor in the prior art, wherein the selected process parameters are the same as those in the embodiment.
Through detection, the removal rate of the glyphosate wastewater is as follows: 95.0 percent.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A system for treating waste water generated in glyphosate production is characterized by comprising:
the device comprises an anaerobic baffle plate reactor (1) for providing a reaction site for decomposing organic matters in glyphosate production wastewater, wherein a movable plug body (2) for controlling the amount of solid sludge in the reaction chamber is arranged in the anaerobic baffle plate reactor (1) and in a reaction chamber close to a water inlet, and a plurality of holes for wastewater to pass through are formed in the movable plug body (2);
a sludge through hole (3) matched with the movable plug body (2) is formed in the bottom wall of the reaction chamber, close to the water inlet, in the anaerobic baffle plate reactor (1), and a valve is installed at the sludge through hole (3);
the regulating tank (4) is communicated with the water inlet of the anaerobic baffle reactor (1) and is used for receiving the glyphosate production wastewater and regulating the content of nutrients in the glyphosate production wastewater;
the biogas receiving tank (5) is communicated with the gas outlet of the anaerobic baffle reactor (1) and is used for receiving biogas generated in the anaerobic baffle reactor (1);
and the oxidation reactor (6) is communicated with the water outlet of the anaerobic baffle reactor (1) and is used for receiving the wastewater after the anaerobic treatment of the anaerobic baffle reactor (1) and secondarily decomposing organic matters in the wastewater.
2. The system for treating the glyphosate production wastewater according to claim 1, wherein frames (7) for limiting the movable plug body (2) are symmetrically arranged in the reaction chamber close to the water inlet in the anaerobic baffled reactor (1), and the two frames (7) are respectively and fixedly connected with the symmetrical side walls in the reaction chamber.
3. The glyphosate production wastewater treatment system according to claim 2, wherein the frame body (7) is composed of a frame plate (701) and a frame strip (702), the frame strip (702) is integrally connected to two ends of the frame plate (701), and the side wall of the movable plug body (2) is in close contact with the frame body (7).
4. The system for treating the glyphosate production wastewater according to claim 2, wherein a driving assembly (8) for driving the movable plug body (2) to displace in the reaction chamber along the vertical direction is arranged at the upper end of the reaction chamber in the anaerobic baffle reactor (1) near the water inlet.
5. The glyphosate production wastewater treatment system according to claim 4, wherein the drive assembly (8) comprises a support frame (801), a motor (802) is mounted on the support frame (801), an output end of the motor (802) is connected with a fixed end of a telescopic loop bar (803), the telescopic end of the telescopic loop bar (803) is fixedly connected with one end of a transition screw (804), the other end of the transition screw (804) penetrates through the upper wall of the reaction chamber to be rotatably connected with the movable plug body (2), an internal thread matched with the transition screw (804) is arranged at a perforation of the upper wall of the reaction chamber, and the transition screw (804) is in threaded connection with the perforation of the upper wall of the reaction chamber.
6. The system for treating the glyphosate production wastewater according to claim 5, wherein a connecting round handle (9) is fixedly connected to one end of the transition screw (804) which is rotatably connected with the movable plug body (2), a cavity matched with the connecting round handle (9) is formed in the movable plug body (2), and the connecting round handle (9) is rotatably connected in the cavity.
7. The system for treating the glyphosate production wastewater according to claim 2, wherein a mudguard (10) is rotatably connected to the lower end of the baffle plate in the anaerobic baffle plate reactor (1) and close to the water inlet.
8. The system for treating the glyphosate production wastewater according to claim 7, wherein the mudguard (10) is a rubber plate, and the lower end of the mudguard (10) and the side facing the water flow inlet direction are arc-shaped wall surfaces.
9. The system for treating glyphosate production wastewater according to claim 1, wherein an oxygen coil (11) is arranged in the oxidation reactor (6), the oxygen coil (11) is a circular pipe, air outlet holes (12) are uniformly formed in the oxygen coil (11) along an annular shape, an air inlet end of the oxygen coil is clamped in an air inlet port of the oxidation reactor (6), a T-shaped connecting plate (13) is fixedly connected to the side wall of the oxygen coil (11), and a transverse plate of the T-shaped connecting plate (13) is fixedly connected with the inner side wall of the oxidation reactor (6).
10. A treatment method of glyphosate production wastewater is characterized by comprising the following steps:
step 1: introducing glyphosate production wastewater into the regulating tank (4), adding nutrient substances which are easy to propagate anaerobic microorganisms into the regulating tank (4), and introducing the regulated glyphosate production wastewater into the anaerobic baffle reactor (1) from the regulating tank (4);
step 2: in the anaerobic baffle plate reactor (1), the movable plug body (2) is adjusted to move downwards to the middle position of the reaction chamber in the vertical direction in the reaction chamber close to the water inlet, so that solid sludge in the reaction chamber is discharged along the sludge through hole (3), the solid sludge in the reaction chamber is reduced, the flow speed of wastewater in the reaction chamber is increased, the temperature in the anaerobic baffle plate reactor (1) is 35 ℃, and the wastewater participates in microbial anaerobic fermentation in the process of flowing around the baffle plate in the anaerobic baffle plate reactor (1) so that organic matters in the wastewater are effectively decomposed;
and step 3: step 2, methane decomposed in the anaerobic baffle reactor (1) enters the methane receiving tank (5), decomposed waste water is introduced into the oxidation reactor (6) under the action of pump force, oxygen is introduced into the oxidation reactor (6) at the same time, and secondary oxidative decomposition is carried out on organic matters in the waste water, so that macromolecular organic matters are further reduced;
and 4, step 4: and (3) detecting the CODcr value of the wastewater discharged from the oxidation reactor (6), discharging the wastewater in a qualified manner, and continuously performing circular treatment in a treatment system if the wastewater is not qualified.
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