Printing ink wastewater treatment equipment

Abstract

The utility model provides printing ink wastewater treatment equipment, and belongs to the technical field of wastewater treatment equipment. The printing ink wastewater treatment equipment comprises a coagulation part and a circulating mixing mechanism. The stirring assembly is installed at the top of the tank body, the bottom of the feeding bin communicates with a discharging pipe, the bottom end of the discharging pipe communicates with one side of the top of the tank body, and a discharging valve is arranged on the discharging pipe; the circulating pump is installed on the top of the tank body, one end of the first connecting pipe is communicated with the water inlet end of the circulating pump, the other end of the first connecting pipe is communicated with the bottom of one side of the tank body, the annular water outlet pipe is fixed in the tank body, and a plurality of water outlets are formed in the bottom of the outer surface of the annular water outlet pipe at equal intervals. The other end of the second connecting pipe hermetically penetrates through the top of the tank body and is communicated with the annular water outlet pipe; the bottom end of the discharging pipe is communicated with the annular water outlet pipe. The annular water outlet pipe is sprayed into the tank body through a plurality of water outlets, so that the mixing efficiency of the coagulant and the printing ink wastewater is improved, and the settling speed of colloid pollution is accelerated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wastewater treatment equipment, in particular to an ink wastewater treatment equipment. BACKGROUND

[0002] Now the whole world attaches great importance to the use of resources and environmental protection, water-based ink as the world recognized environmentally friendly printing ink, is very widely used, but due to the cleaning of the equipment, will produce a certain amount of wastewater. Water-based ink color changes in the chemical composition of its wastewater is quite complex, with high COD, high color, difficult to biodegrade characteristics, once into the water, will cause serious pollution to the water environment. Therefore, the wastewater treatment process and the type and characteristics of water-based ink have a very close relationship. At present, the main methods for treating water-based ink wastewater are SB process, electrolysis method, coagulation method, air flotation method, membrane bioreactor and biological contact oxidation method.

[0003] The coagulation method is to add a certain amount of reagent to the sewage, and after the reaction process of destabilization and bridging, the pollutants in the water are coagulated and settled. The pollutants in the water in colloidal state usually have negative charge, and the colloidal particles repel each other to form a stable mixed liquid. If the water contains opposite charged dielectric (i.e. coagulant), the colloidal particles in the sewage can change to electrically neutral and coagulate into large particles under the action of molecular attraction and then settle. This method is used for treating oil-containing wastewater, dyeing wastewater, scouring wastewater, etc. This method can be used independently or in combination with other methods, and is generally used as pretreatment, intermediate treatment and advanced treatment, etc.

[0004] Generally, the coagulation of wastewater is carried out in the coagulation tank. After adding the coagulant into the coagulation tank, the ink wastewater and the coagulant are mixed slowly, which leads to slow settling speed and poor settling effect of the colloidal substances in the ink wastewater, so that the coagulation time is prolonged, the production cost is increased, and the coagulation and settling speed of the wastewater is reduced. Practical new type content

[0005] In order to make up for the above shortcomings, the present application provides an ink wastewater treatment equipment, which aims to improve the slow mixing effect of sewage and coagulant, slow coagulation speed, and reduce the coagulation and settling speed of wastewater.

[0006] The ink wastewater treatment equipment provided by the embodiment of the present application comprises a coagulation part and a circulating mixing mechanism.

[0007] The coagulation part comprises a tank body, a stirring assembly and a feeding bin, the stirring assembly is installed on the top of the tank body, the bottom end of the stirring assembly is movably penetrated through the top of the tank body and extends into the tank body, a wastewater inlet pipe is communicated with the top of the tank body on one side, a water outlet pipe is communicated with the other side of the tank body, a valve is arranged on the water outlet pipe, a blowdown pipe is communicated with the bottom of the tank body, a discharge valve is arranged on the blowdown pipe, a discharge pipe is communicated with the bottom of the feeding bin, the bottom end of the discharge pipe is communicated with one side of the top of the tank body, and a discharge valve is arranged on the discharge pipe.

[0008] In the implementation process, during use, the ink wastewater is introduced into the tank body through the wastewater inlet pipe, the stirring assembly is started, the coagulant is poured into the feeding bin, the discharge valve is opened, the coagulant is introduced into the discharge pipe through the feeding bin, and then introduced into the tank body, the coagulant and the ink wastewater are fully mixed through the stirring of the stirring assembly, so as to improve the coagulation and sedimentation speed of the ink wastewater, after full mixing, the stirring assembly is closed, the colloidal pollution in the ink wastewater is coagulated into large particles under the action of the coagulant and then sinks, the valve is opened, the coagulated water is discharged through the water outlet pipe for next step processing, then the discharge valve is opened, and the colloidal particles in the tank body are discharged through the blowdown pipe. The circulating pump is started, the wastewater mixture in the tank body is pumped out through the first connecting pipe, introduced into the annular water outlet pipe through the second connecting pipe, and then sprayed into the tank body through the plurality of water outlets of the annular water outlet pipe, so as to increase the mixing efficiency of the coagulant and the ink wastewater and accelerate the sedimentation speed of the colloidal pollution. At the same time, when the coagulant is added, the circulating pump is closed, the discharge valve is opened, the coagulant is introduced into the annular water outlet pipe through the discharge pipe, and then output from the annular water outlet pipe, so as to increase the contact area of the coagulant with the ink wastewater, and when the coagulant addition is completed, the discharge valve is closed, and then the circulating pump is started for efficient mixing.

[0009] In a specific embodiment, a filter screen plate is detachably arranged in the feeding bin.

[0010] In the implementation process, when the coagulant is solid, the coagulant can be poured onto the filter screen plate, water is added for pre-mixing of the coagulant, and then the coagulant is introduced into the annular water outlet pipe through the discharge pipe. If the coagulant is a liquid coagulant, the liquid coagulant can also be filtered through the filter screen plate.

[0011] In a specific embodiment, the upper feeding bin is a transparent bin.

[0012] In a specific embodiment, a scale line is arranged outside the upper feeding bin.

[0013] In the implementation process, the upper feeding bin is transparent, which facilitates observation of the water level of the coagulant in the bin and accurate determination of the volume of the coagulant added.

[0014] In a specific embodiment, a one-way valve is arranged below the discharge valve.

[0015] In the implementation process, if the coagulant is discharged from the discharge pipe into the annular water outlet pipe and is discharged from the water outlet at the bottom of the annular water outlet pipe, if the circulating pump is mistakenly started, the liquid pressure in the annular pipe will be high when the circulating pump is mistakenly operated. The one-way valve can prevent the liquid from flowing back from the discharge pipe to the inside of the upper feeding bin, so as to prevent the liquid from overflowing from the upper feeding bin.

[0016] In a specific embodiment, the stirring assembly includes a motor, a stirring rod, and stirring blades. The motor is installed at the top of the tank body, the top end of the stirring rod is fixedly connected to the output end of the motor, the bottom end of the stirring rod is movably penetrated through the top of the tank body and extends into the tank body, and all the stirring blades are fixedly arranged at both sides of the stirring rod.

[0017] In the implementation process, the motor is started, the motor rotates to make the stirring rod rotate, and all the stirring blades rotate, so as to realize stirring of the ink wastewater and the coagulant and make the coagulant fully mix with the ink wastewater.

[0018] In a specific embodiment, the coagulation part includes support legs fixedly arranged at both sides of the bottom of the tank body.

[0019] In the implementation process, the support legs are used to support the tank body.

[0020] In a specific embodiment, pipe clamps are equidistantly arranged on the annular water outlet pipe, and all the pipe clamps are fixedly arranged on the inner wall of the tank body.

[0021] In the implementation process, the pipe clamps are used to fix the annular water outlet pipe to the inner wall of the tank body. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings only illustrate some of the embodiments of the present application, and should not be considered as a limitation of the scope. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0023] Figure 1 is a structural schematic diagram of an ink wastewater treatment equipment provided by the embodiments of the present application;

[0024] Figure 2 is a structural schematic diagram of a circulating mixing mechanism provided by the embodiments of the present application;

[0025] Figure 3 is a structural schematic diagram of a connection relationship between a feeding bin and a discharging pipe provided by the embodiments of the present application;

[0026] Figure 4 is a structural schematic diagram of a stirring assembly provided by the embodiments of the present application.

[0027] In the figure, 10 is a coagulation part, 110 is a tank body, 120 is a stirring assembly, 121 is a motor, 122 is a stirring rod, 123 is a stirring blade, 130 is a wastewater inlet pipe, 140 is a water outlet pipe, 150 is a blowdown pipe, 160 is a feeding bin, 161 is a filter screen plate, 162 is a scale line, 170 is a discharging pipe, 171 is a discharging valve, 172 is a one-way valve, 180 is a supporting leg, 20 is a circulating mixing mechanism, 210 is a circulating pump, 220 is a first connecting pipe, 230 is a second connecting pipe, 240 is an annular water outlet pipe, and 241 is a water outlet. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0030] Please refer to Figures 1-4 The present application provides an ink wastewater treatment equipment, which comprises a coagulation part 10 and a circulating mixing mechanism 20.

[0031] The coagulation part 10 mixes the ink wastewater and the coagulant, and then makes the mixed ink wastewater to be precipitated and discharged for next treatment. The circulating mixing mechanism 20 mixes the ink wastewater and the coagulant more fully, and improves the efficiency of the colloidal particle precipitation.

[0032] Please refer to Figure 1 , Figure 3 and Figure 4 The coagulation part 10 includes a tank body 110, a stirring assembly 120 and a feeding bin 160. The stirring assembly 120 is installed on the top of the tank body 110, and the bottom end of the stirring assembly 120 penetrates through the top of the tank body 110 and extends into the tank body 110. A wastewater inlet pipe 130 is connected to the top of one side of the tank body 110. A water outlet pipe 140 is connected to the other side of the tank body 110, and a valve is arranged on the water outlet pipe 140. A sewage discharge pipe 150 is connected to the bottom of the tank body 110, and a discharge valve is arranged on the sewage discharge pipe 150. A discharge pipe 170 is connected to the bottom of the feeding bin 160, and the bottom end of the discharge pipe 170 is connected to one side of the top of the tank body 110. A discharge valve 171 is arranged on the discharge pipe 170. In use, the ink wastewater is introduced into the tank body 110 through the wastewater inlet pipe 130, and the stirring assembly 120 is started. Then the coagulant is poured into the feeding bin 160, the discharge valve 171 is opened, and the coagulant is introduced into the discharge pipe 170 through the feeding bin 160 and then into the tank body 110. The coagulant and the ink wastewater are mixed fully by the stirring assembly 120 to improve the coagulation and sedimentation speed of the ink wastewater. After the mixing, the stirring assembly 120 is closed, the colloidal pollutants in the ink wastewater are coagulated into large particles under the action of the coagulant, the valve is opened, and the coagulated water is discharged through the water outlet pipe 140 for next treatment. Then the discharge valve is opened, and the colloidal particles in the tank body 110 are discharged through the sewage discharge pipe 150.

[0033] In this embodiment, the coagulant can be aluminum sulfate, basic aluminum chloride, ferrous sulfate or ferric chloride.

[0034] In the specific setting, a filter screen plate 161 is detachably arranged in the feeding bin 160. Specifically, limit plates are symmetrically arranged in the feeding bin 160, and the filter screen plate 161 is located on the limit plates, facilitating the replacement and cleaning of the filter screen plate 161. When the coagulant is solid, the coagulant is poured onto the filter screen plate 161, water is added for pre-mixing of the coagulant, and then the coagulant is introduced into the annular water outlet pipe 240 through the discharge pipe 170. If the coagulant is a liquid, the precipitate in the liquid coagulant can also be filtered through the filter screen plate 161.

[0035] Further, the feeding bin 160 is a transparent bin. Specifically, the feeding bin 160 can be made of corrosion-resistant plastic material. The feeding bin 160 is provided with a scale line 162 on the outside. The feeding bin 160 is transparent, which can facilitate observation of the internal coagulant water level and use, and can also understand the precise volume of coagulant added this time according to the scale line 162.

[0036] In a specific arrangement, the discharge pipe 170 is provided with a one-way valve 172 below the discharge valve 171. If the discharge pipe 170 is discharged to the annular water outlet pipe 240 from the water outlet 241 at the bottom of the annular water outlet pipe 240, if the circulating pump 210 is mistakenly started, i.e. misoperation, the liquid pressure circulating to the annular pipe inside is large, and the one-way valve 172 can prevent the liquid from flowing back to the inside of the feeding bin 160, causing the liquid to overflow from the feeding bin 160.

[0037] In a specific arrangement, the stirring assembly 120 includes a motor 121, a stirring rod 122, and stirring blades 123. The motor 121 is installed on the top of the tank body 110. Specifically, the motor 121 is bolted to the top of the tank body 110. The top end of the stirring rod 122 is fixedly connected to the output end of the motor 121. Specifically, the top end of the stirring rod 122 is welded to the output end of the motor 121. The bottom end of the stirring rod 122 is movably penetrated through the top of the tank body 110 and extends into the inside of the tank body 110. All the stirring blades 123 are equidistantly fixed to the two sides of the stirring rod 122. Specifically, all the stirring blades 123 are equidistantly bolted to the two sides of the stirring rod 122. When the motor 121 is started, the rotation of the motor 121 causes the stirring rod 122 to rotate, further realizing the rotation of the stirring blades 123, thereby realizing the stirring of the ink wastewater and the coagulant to make the coagulant fully mixed with the ink wastewater.

[0038] In a specific arrangement, the coagulation part 10 includes support legs 180 fixed to the bottom of the tank body 110 on both sides. Specifically, the support legs 180 are provided with four, and the four support legs 180 are welded to the bottom of the tank body 110 on both sides. The support legs 180 are used to support the tank body 110.

[0039] Please refer to Figure 1 and Figure 2The circulating mixing mechanism 20 comprises a circulating pump 210, a first connecting pipe 220, a second connecting pipe 230 and a ring-shaped water outlet pipe 240. The circulating pump 210 is installed on the top of the tank body 110, in particular, the circulating pump 210 is installed on the top of the tank body 110 by bolts. One end of the first connecting pipe 220 is in communication with the water inlet end of the circulating pump 210, and the other end of the first connecting pipe 220 is in communication with the bottom of one side of the tank body 110. In particular, a first through hole is formed in one side of the tank body 110, the other end of the first connecting pipe 220 is in communication with the tank body 110 through the first through hole, and a first annular sealing gasket is arranged in the first through hole. The ring-shaped water outlet pipe 240 is fixed in the tank body 110, and a plurality of water outlets 241 are equidistantly arranged on the bottom of the outer surface of the ring-shaped water outlet pipe 240. One end of the second connecting pipe 230 is in communication with the water outlet end of the circulating pump 210, and the other end of the second connecting pipe 230 is in sealing communication with the ring-shaped water outlet pipe 240 through the top of the tank body 110. The bottom end of the discharge pipe 170 is in communication with the ring-shaped water outlet pipe 240. When the circulating pump 210 is started, the circulating pump 210 draws the wastewater mixture in the tank body 110 out through the first connecting pipe 220, and then the wastewater mixture enters the ring-shaped water outlet pipe 240 through the second connecting pipe 230. The wastewater mixture is sprayed into the tank body 110 through the plurality of water outlets 241 of the ring-shaped water outlet pipe 240, thereby increasing the mixing efficiency of the coagulant and the ink wastewater and accelerating the sedimentation speed of the colloidal pollution. When the coagulant is added, the circulating pump 210 is closed first, and the discharge valve 171 is opened, so that the coagulant enters the ring-shaped water outlet pipe 240 through the discharge pipe 170, and then the coagulant is output from the ring-shaped water outlet pipe 240, thereby increasing the contact area of the coagulant with the ink wastewater. When the coagulant feeding is completed, the discharge valve 171 is closed first, and then the circulating pump 210 is started for efficient mixing.

[0040] In a specific arrangement, pipe clamps are equidistantly arranged on the ring-shaped water outlet pipe 240, and all the pipe clamps are fixed to the inner wall of the tank body 110. In particular, all the pipe clamps are fixed to the inner wall of the tank body 110 by screws.

[0041] The working principle of the ink wastewater treatment equipment is as follows:

[0042] In use, the ink wastewater is introduced into the tank 110 through the wastewater inlet pipe 130, the stirring assembly 120 is started, then the coagulant is poured into the feeding bin 160, the discharge valve 171 is opened, the coagulant is introduced into the discharge pipe 170 through the feeding bin 160, and then into the tank 110, the coagulant and the ink wastewater are fully mixed by the stirring of the stirring assembly 120, so as to improve the coagulation and sedimentation speed of the ink wastewater, after fully mixing, the stirring assembly 120 is closed, the colloidal pollution in the ink wastewater is coagulated into large particles under the action of the coagulant and then sinks, the valve is opened, the coagulated water is discharged through the water outlet pipe 140 for next step processing, then the discharge valve is opened, the colloidal particles in the tank 110 are discharged through the blowdown pipe 150. The circulating pump 210 is started, the circulating pump 210 draws the wastewater mixture in the tank 110 out through the first connecting pipe 220, and then into the annular water outlet pipe 240 through the second connecting pipe 230, the annular water outlet pipe 240 is sprayed into the tank 110 through the plurality of water outlets 241, the mixing efficiency of the coagulant and the ink wastewater is increased, and the sedimentation speed of the colloidal pollution is accelerated. At the same time, when the coagulant is added, the circulating pump 210 is closed first, the discharge valve 171 is opened, the coagulant is introduced into the annular water outlet pipe 240 through the discharge pipe 170, and then the coagulant is output from the annular water outlet pipe 240, the contact area of the coagulant with the ink wastewater is increased, and at the same time, when the coagulant feeding is finished, the discharge valve 171 is closed first, and then the circulating pump 210 is started for efficient mixing.

[0043] It should be noted that the specific model and specifications of the motor 121 and the circulating pump 210 need to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0044] The power supply of the motor 121 and the circulating pump 210 and its principle are clear to those skilled in the art, and will not be described in detail here.

[0045] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope of the claims.

Claims

1. An ink wastewater treatment apparatus characterized by comprising: The utility model provides a coagulation part (10), the coagulation part (10) includes jar body (110), stirring subassembly (120) and upper bin (160), the stirring subassembly (120) is installed on the jar body (110) top, and the stirring subassembly (120) bottom end mobilely penetrates the jar body (110) top and extends to the jar body (110) inside, the jar body (110) one side top is connected with waste water inlet pipe (130), the jar body (110) other side is connected with water outlet pipe (140), is provided with valve on the water outlet pipe (140), the jar body (110) bottom is connected with blowdown pipe (150), is provided with discharge valve on the blowdown pipe (150), the upper bin (160) bottom is connected with discharge pipe (170), the discharge pipe (170) bottom end with the jar body (110) top one side is connected, is provided with the discharge valve (171) on the discharge pipe (170). The utility model provides a circulating mixing mechanism (20), the circulating mixing mechanism (20) includes circulating pump (210), first connecting pipe (220), second connecting pipe (230) and annular water outlet pipe (240), the circulating pump (210) is installed on the jar body (110) top, the first connecting pipe (220) one end with the circulating pump (210) water inlet end is connected, the first connecting pipe (220) other end with the jar body (110) one side bottom is connected, the annular water outlet pipe (240) is fixed in the jar body (110) inside, and the annular water outlet pipe (240) outer surface bottom equidistantly is provided with a plurality of water outlets (241), the second connecting pipe (230) one end with the circulating pump (210) water outlet is connected, and the second connecting pipe (230) other end sealedly penetrates the jar body (110) top and is connected with the annular water outlet pipe (240), the discharge pipe (170) bottom end with the annular water outlet pipe (240) is connected. The upper bin (160) is detachably provided with a filter screen plate (161) inside.

2. The ink wastewater treatment apparatus according to claim 1, characterized by The upper bin (160) is provided with a scale line (162) outside.

3. The ink wastewater treatment apparatus according to claim 2, characterized by The upper bin (160) is a transparent bin.

4. The ink wastewater treatment apparatus according to claim 3, characterized by The discharge pipe (170) is provided with a one-way valve (172) below the discharge valve (171).

5. The ink wastewater treatment apparatus according to claim 1, characterized by The stirring subassembly (120) includes a motor (121), a stirring rod (122), and stirring blades (123). The motor (121) is installed on the top of the jar body (110). The top end of the stirring rod (122) is fixedly connected with the output end of the motor (121). The bottom end of the stirring rod (122) penetrates the top of the jar body (110) and extends into the jar body (110). All the stirring blades (123) are equidistantly fixed on both sides of the stirring rod (122).

6. The ink wastewater treatment apparatus according to claim 1, characterized by The coagulation part (10) includes support legs (180) fixed to the bottom of the jar body (110) on both sides.

7. An ink waste treatment apparatus according to claim 6, wherein The annular water outlet pipe (240) is equidistantly sleeved with pipe clamps, and all the pipe clamps are fixed to the inner wall of the jar body (110).

8. The ink wastewater treatment apparatus according to claim 7, characterized by ​

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