CN116903171A - Multicomponent chemical wastewater treatment device - Google Patents

Abstract

The utility model provides a multicomponent chemical wastewater treatment device, including the setting tank, the filter and demulsification jar, setting tank side and sedimentation liquid adding pipe intercommunication of setting tank top and waste water inlet pipe intercommunication, setting tank bottom is through pipeline and filter one side intercommunication, set up slush pump and first solenoid valve on the pipeline between setting tank and the filter, the opposite side of filter is through the top intercommunication of pipeline and demulsification jar, set up the filtration pump on the connecting pipe between filter and the demulsification jar, connecting pipeline and demulsification jar between filter and the demulsification jar are connected one end and demulsification liquid adding pipe intercommunication, setting agitating unit in setting tank and the demulsification jar, setting up the hot plate in setting tank bottom, the demulsification jar lateral part sets up the observation window, demulsification jar bottom and the one end intercommunication of drain pipe set up the second solenoid valve on the drain pipe. The invention can effectively separate various solvents, recycle ions in the solvents, reduce pollution in the environment, and fully utilize resources.

Description

A multi-component chemical wastewater treatment device

Technical field

The invention belongs to the field of chemical wastewater treatment, specifically a multi-component chemical wastewater treatment device.

Background technique

With the continuous development of society, environmental pollution has become increasingly serious. As a heavily polluting industry, the treatment of its three wastes in the chemical industry is currently an important research direction. Because chemical wastewater contains wastewater generated from different workshops and different production lines, it contains a variety of different solvents and a large amount of metal ions. Currently, it is difficult for existing devices to completely purify it, resulting in the purified water after treatment may not be able to reach Discharge and recycling standards, and even if the standards are met, the current treatment methods can only recycle the treated water resources, but cannot recycle the organic solvents and metal ions contained in the chemical wastewater, resulting in the loss of resources. waste.

Contents of the invention

The present invention provides a multi-component chemical wastewater treatment device to solve the defects in the prior art.

The present invention is realized through the following technical solutions:

A multi-component chemical wastewater treatment device, including a settling tank, a filter and a demulsification tank. The top of the settling tank is connected to the wastewater inlet pipe, and the side of the settling tank is connected to the settling liquid adding pipe. The settling tank The bottom is connected to one side of the filter through a pipeline. A mud pump and a first solenoid valve are provided on the pipeline between the settling tank and the filter. The other side of the filter is connected to the top of the demulsification tank through a pipeline. , a filtrate pump is provided on the connecting pipeline between the filter and the demulsification tank, the connecting pipeline between the filter and the demulsification tank and one end of the demulsification tank are connected to the demulsification adding pipe, and the settling A stirring device is provided in the tank and the demulsification tank, an aeration plate is provided on the side of the settling tank and the bottom of the demulsification tank, a heating plate is provided on the bottom of the settling tank, and an observation window is provided on the side of the demulsification tank. The bottom of the demulsification tank is connected to one end of the liquid outlet pipe, and a second solenoid valve is provided on the liquid outlet pipe.

As a multi-component chemical wastewater treatment device as described above, at least two sedimentation liquid adding pipes are provided, and a third solenoid valve and a first one-way valve are provided on the sedimentation liquid adding pipes. One end of the pipe away from the sedimentation tank is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the bottom of the sedimentation liquid storage tank. A sedimentation liquid pump is provided on the connecting pipe.

A multi-component chemical wastewater treatment device as described above, a filter screen is arranged diagonally inside the filter, a fourth solenoid valve is arranged on the connecting pipeline between the filter and the demulsification tank, and the top of the filter is connected to The cleaning pipe is connected, and a second one-way valve is provided on the cleaning pipe. The side of the bottom of the filter close to the settling tank is connected to the top of the settling solids recovery tank through a pipeline. The pipe between the filter and the settling solids recovery tank A fifth solenoid valve and solid recovery pump are installed on the road.

As a multi-component chemical wastewater treatment device as described above, an oscillator is provided on the side of the filter screen in the filter.

A multi-component chemical wastewater treatment device as described above, a motor is arranged above the pipeline connecting the filter and the settled solid recovery tank, and the output shaft of the motor is fixed to the top center position of the inverted conical loose rotor. The inverted conical loose rotor is connected with a spiral pattern.

As a multi-component chemical wastewater treatment device as described above, an exhaust pipe is arranged on the top of the settling tank and the demulsification tank.

A multi-component chemical wastewater treatment device as described above, the observation window is hollow inside, the observation window is located in the demulsification tank and has an opening on one side, and a barrier mesh is provided in the opening. A transparent plate is provided on the side away from the barrier mesh plate, and a first floating ball and a second floating ball are provided in the hollow cavity in the observation window.

As a multi-component chemical wastewater treatment device as described above, the stirring device is a microwave stirrer, and the microwave stirrer is arranged on the side of the settling tank and the demulsification tank.

As a multi-component chemical wastewater treatment device as described above, the liquid outlet pipe is provided with an adsorber and a liquid outlet pump.

A multi-component chemical wastewater treatment device as described above, the other end of the liquid outlet pipe is connected to the top of the high-density organic solvent recovery tank, the mixed water phase recovery tank and the low-density organic solvent recovery tank through pipelines. , a sixth solenoid valve is respectively provided on the connecting pipelines between the liquid outlet pipe and the high-density organic solvent recovery tank, the mixed water phase recovery tank and the low-density organic solvent recovery tank.

The advantage of the present invention is that the present invention can effectively separate various solvents into a high-density organic solvent layer insoluble in water, a water phase layer mixed with water-soluble organic solvents, and a low-density organic solvent layer insoluble in water, and then It is convenient to operate and recycle them separately, and at the same time, the ions in them can be recycled, which not only protects the environment and reduces pollution, but also achieves full utilization of resources.

Description of the drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a schematic structural diagram of the present invention;

FIG. 2 is a partial enlarged view of part I in FIG. 1 .

Reference signs: 1. Settling tank; 2. Filter; 3. Demulsification tank; 4. Wastewater inlet pipe; 5. Settlement adding pipe; 6. First solenoid valve; 7. Filtrate pump; 8. Demulsifier. Adding pipe; 9. Aeration plate; 10. Heating plate; 11. Liquid outlet pipe; 12. Second solenoid valve; 13. Third solenoid valve; 14. First one-way valve; 15. Connecting pipe; 16. Settlement Liquid storage tank; 17. Sedimentation liquid pump; 18. Filter; 19. Fourth solenoid valve; 20. Cleaning pipe; 21. Second one-way valve; 22. Sedimentation solid recovery tank; 23. Fifth solenoid valve; 24 , Solid recovery pump; 25. Oscillator; 26. Motor; 27. Loose rotor; 28. Exhaust pipe; 29. Barrier mesh; 30. Transparent plate; 31. First float; 32. Second float ; 33. Microwave stirrer; 34. Adsorber; 35. Liquid discharge pump; 36. High-density organic solvent recovery tank; 37. Mixed water phase recovery tank; 38. Low-density organic solvent recovery tank; 39. Sixth solenoid valve ; 40. Mud pump; 41. Observation window.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

A multi-component chemical wastewater treatment device, including a settling tank 1, a filter 2 and a demulsification tank 3. The top of the settling tank 1 is connected to the wastewater inlet pipe 4, and the side of the settling tank 1 is connected to the settling liquid adding pipe. 5 is connected, the bottom of the settling tank 1 is connected to one side of the filter 2 through a pipeline, a mud pump 40 and a first solenoid valve 6 are provided on the pipeline between the settling tank 1 and the filter 2, the filter 2 The other side is connected to the top of the demulsification tank 3 through a pipeline. A filtrate pump 7 is provided on the connecting pipeline between the filter 2 and the demulsification tank 3. Between the filter 2 and the demulsification tank 3 One end of the connecting pipeline and the demulsification tank 3 is connected to the demulsification adding pipe 8, a stirring device is provided in the settling tank 1 and the demulsification tank 3, and an aeration is provided on the side of the settling tank 1 and the bottom of the demulsification tank 3 As mentioned in Table 9, the bottom of the settling tank 1 is provided with a heating plate 10, and the side of the demulsification tank 3 is provided with an observation window 41. The bottom of the demulsification tank 3 is connected to one end of the liquid outlet pipe 11, and the liquid outlet pipe A second solenoid valve 12 is provided on 11. During use, the present invention detects the components of the wastewater sample to be processed in advance, thereby selecting the corresponding sedimentation liquid and adding it through the sedimentation liquid adding pipe 5 to sediment the corresponding metal ions that can produce insoluble salts, and at the same time, the sedimentation liquid is realized through the stirring device Rapid mixing with wastewater, heating by the heating plate 10 accelerates the reaction process and accelerates the discharge of gases in the wastewater. At the same time, the dissolved gases in the wastewater and the gases generated by the reaction are discharged from the wastewater through the aeration plate 9. After the settlement is completed, the mud pump is turned on. 40 and the first solenoid valve 6 pass the precipitated insoluble salt particles and wastewater through the filter 2 to leave the insoluble salt particles, and then turn on the filtrate pump 7, and drive the wastewater filtered out by the filter 2 through the filtrate pump 7 to send it to the demulsifier. In the tank 3, since most of the mixed wastewater has formed an emulsion, in the present invention, the filtered wastewater is introduced into the demulsification tank 3 and the demulsification liquid is added through the demulsification liquid adding pipe 8. The rapid mixing of the demulsification liquid and the wastewater is achieved through the stirring device. The heating plate 10 accelerates the reaction process and accelerates the discharge of gas in the waste water. At the same time, the dissolved gas in the waste water and the gas generated by the reaction are discharged from the waste water through the aeration plate 9. After the demulsification is completed, it is left to wait for stratification. Due to the multi-component composition There are many organic solvents in the solvent, which are generally divided into three layers. From bottom to top, they are a high-density organic solvent layer that is insoluble in water, a water phase layer that is mixed with water-soluble organic solvents, and a low-density organic solvent layer that is insoluble in water. , through the observation window, you can conveniently observe the boundary position between the two adjacent layers after the three layers are statically separated, and then open the second solenoid valve 12 to sequentially mix the water-insoluble high-density organic solvent layer and the water-soluble organic solvent. The aqueous phase layer and the water-insoluble low-density organic solvent layer are discharged and stored separately. The water-insoluble high-density organic solvent and the water-insoluble low-density organic solvent are enriched to a specified amount and separated by distillation to recover a single pure organic solvent. For recycling and use, water mixed with organic solvents dissolved in water is first distilled to obtain a single pure organic solvent, and then the remaining aqueous solution is evaporated. The water phase is heated and evaporated to condense and recover it. After evaporation, the water dissolves and salts are precipitated, which is recovered and the components are detected and utilized. Conventional aqueous solutions containing sodium and potassium amide can be used in fertilizer production, thereby achieving full recycling of resources.

Specifically, at least two sedimentation liquid adding pipes 5 are provided in this embodiment. A third solenoid valve 13 and a first one-way valve 14 are provided on the sedimentation liquid adding pipe 5 . The sedimentation liquid adding pipe 5 is far away from the One end of the settling tank 1 is connected to one end of the connecting pipe 15 , and the other end of the connecting pipe 15 is connected to the bottom of the settling liquid storage tank 16 . A settling liquid pump 17 is provided on the connecting pipe 15 . The sedimentation agent is added to the wastewater through at least two sedimentation liquid adding pipes 5 arranged from top to bottom at different heights to accelerate the sedimentation efficiency. At the same time, the first one-way valve 14 prevents the sedimentation tank 1 from adding sedimentation liquid at multiple points in a small amount. The wastewater is poured back into the sedimentation liquid adding pipe 5 to ensure that the sedimentation operation proceeds normally.

Specifically, the filter 2 in this embodiment is provided with a filter screen 18 obliquely, a fourth solenoid valve 19 is provided on the connecting pipeline between the filter 2 and the demulsification tank 3, and the top of the filter 2 is connected to the cleaning pipe. 20 is connected, a second one-way valve 21 is provided on the cleaning pipe 20, and the side of the bottom of the filter 2 close to the settling tank 1 is connected to the top of the settled solids recovery tank 22 through a pipeline, and the filter 2 is connected to the settled solids recovery tank 22. A fifth solenoid valve 23 and a solid recovery pump 24 are provided on the pipeline between the recovery tanks 22 . The obliquely arranged filter screen 18 can increase the filtering area of the filter screen 18, thereby improving the filtration efficiency. At the same time, after the filtration is completed, the first solenoid valve 6 and the fourth solenoid valve 19 are closed, and then high-pressure water is added through the cleaning pipe 20 for flushing and cleaning. , simultaneously open the fifth solenoid valve 23 and the solid recovery pump 24 to send the insoluble salt filtered by the filter 1 to the settled solid recovery tank 22 with the water flow for recycling, so as to avoid the accumulation of insoluble salt in the filter 2 and causing pipeline blockage.

Preferably, an oscillator 25 is provided on the side of the filter screen 18 in the filter 2 . The oscillator 25 can prevent insoluble salt particles from clogging the filter screen 18 during the filtration operation, and can also accelerate the separation of the insoluble salt particles from the filter screen 18 during cleaning, making it easier to use.

Preferably, a motor 26 is provided above the communication pipeline between the filter 2 and the settled solid recovery tank 22, and the output shaft of the motor 26 is fixedly connected to the top center position of the inverted conical loosening rotor 27. The inverted cone A spiral pattern is provided on the type loosening rotor 27. When the insoluble salt particles become hardened, the high-pressure water cannot quickly disperse them. The present invention uses the motor 26 to drive the loosening rotor 27 to rotate, thereby quickly destroying the hardened insoluble salt particle layer, and coupled with the flushing of high-pressure water, the insoluble salt particles can be washed away. Salt particles quickly return water.

More specifically, exhaust pipes 28 are provided on the tops of the settling tank 1 and the demulsification tank 3 described in this embodiment. Direct emission of the gas generated after aeration may pollute the environment. The exhaust gas is recovered through the exhaust pipe 28 and then discharged after detection and treatment to ensure a green environment.

More specifically, since if the three layers of solutions are all colorless, it is difficult to distinguish the boundaries of adjacent layers with the naked eye. In order to overcome the above problems, the observation window 41 described in this embodiment is provided with a hollow interior. The observation window 41 is located at the emulsion breaking point. An opening is provided on one side of the tank 3 and a barrier mesh 29 is provided in the opening. A transparent plate 30 is provided on the side of the observation window 41 away from the barrier mesh 29. A first floating ball 31 is provided in the hollow cavity in the observation window 41. and the second float 32. In the present invention, the density of the first floating ball 31 is 0.9g/cm ³ and the density of the first floating ball 31 is 1.05g/cm ³ . Since the main component in the wastewater is water, the density of the organic solvent methanol ethanol dissolved in water is All are smaller than water (i.e. 1.0g/cm ³ ). Common organic solvents that are insoluble in water have a density lower than water. The density of organic solvents that are insoluble in water is generally between 0.7-0.9g/cm ³ . Common organic solvents that are insoluble in water have a density higher than water. The density is naturally greater than 1.0g/cm ³ . However, the density of common organic solvents soluble in water is less than 1.0g/cm ³ when mixed with water. However, since water accounts for a large proportion, the water phase of the organic solvents soluble in water is mixed. The density is between 0.95-1.0g/ ^cm3 , so the first floating ball 31 can be suspended at the boundary of the water phase layer of mixed water-soluble organic solvent and the low-density organic solvent layer insoluble in water, and the second floating ball 32 It can be suspended at the boundary between the water-insoluble high-density organic solvent layer and the water phase layer of the mixed water-soluble organic solvent, so that the convenient position can be easily distinguished. At the same time, the first floating ball 31 and the second floating ball 32 can be placed on Bright colors make it easier to see.

Furthermore, the stirring device described in this embodiment is a microwave stirrer 33, which is provided on the sides of the settling tank 1 and the demulsification tank 3. The microwave stirrer 33 is more efficient than traditional mechanical stirring and can accelerate particle movement, thereby accelerating settling and demulsification operations.

Furthermore, the liquid outlet pipe 11 described in this embodiment is provided with an adsorber 34 and a liquid outlet pump 35. The adsorber 34 can decolorize the solution and adsorb fine particles, thereby ensuring subsequent solvent recovery to obtain a high-purity solvent.

Furthermore, the other end of the liquid outlet pipe 11 in this embodiment is connected to the top of the high-density organic solvent recovery tank 36, the mixed water phase recovery tank 37, and the low-density organic solvent recovery tank 38 through pipelines. A sixth solenoid valve 39 is respectively provided on the connecting pipelines between the liquid outlet pipe 11 and the high-density organic solvent recovery tank 36, the mixed water phase recovery tank 37, and the low-density organic solvent recovery tank 38. When the present invention is used, the sixth solenoid valve 39 corresponding to the high-density organic solvent recovery tank 36, the mixed water phase recovery tank 37 and the low-density organic solvent recovery tank 38 is opened in sequence to receive the high-density organic solvent layer insoluble in water, mixed with The aqueous phase layer of water organic solvent and the low-density organic solvent layer insoluble in water facilitate subsequent recovery and treatment respectively.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be used Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A multicomponent chemical wastewater treatment device is characterized in that: including setting up slush pump (40) and first solenoid valve (6) on the pipeline between settling cask (1) and filter (2), the opposite side of filter (2) is through the top intercommunication of pipeline and demulsification jar (3), connecting pipeline between filter (2) and demulsification jar (3) sets up filtration pump (7), connecting pipeline and demulsification jar (3) between filter (2) and demulsification jar (3) connect one end and demulsification liquid and add pipe (8) intercommunication, set up agitating unit in settling cask (1) and the demulsification jar (3), settling cask (1) lateral part and demulsification jar (3) bottom set up aeration board (9) the top intercommunication of demulsification jar (3), setting up heating plate (10) lateral part (1) and demulsification jar (3), the connecting pipe between filter (2) and demulsification jar (3) sets up drain pump (7), the liquid outlet pipe (11) is provided with a second electromagnetic valve (12).

2. A multi-component chemical wastewater treatment apparatus according to claim 1 and wherein: the sedimentation liquid adding pipe (5) at least is provided with two sedimentation liquid adding pipes, a third electromagnetic valve (13) and a first one-way valve (14) are arranged on the sedimentation liquid adding pipe (5), one end of the sedimentation liquid adding pipe (5) away from the sedimentation tank (1) is communicated with one end of a connecting pipe (15), the other end of the connecting pipe (15) is communicated with the bottom of a sedimentation liquid storage tank (16), and a sedimentation liquid pump (17) is arranged on the connecting pipe (15).

3. A multi-component chemical wastewater treatment apparatus according to claim 1 and wherein: the filter is characterized in that a filter screen (18) is obliquely arranged in the filter (2), a fourth electromagnetic valve (19) is arranged on a connecting pipeline of the filter (2) and the demulsification tank (3), the top of the filter (2) is communicated with a cleaning pipe (20), a second one-way valve (21) is arranged on the cleaning pipe (20), one side, close to the sedimentation tank (1), of the bottom of the filter (2) is communicated with the top of the sedimentation solid recovery tank (22) through a pipeline, and a fifth electromagnetic valve (23) and a solid recovery pump (24) are arranged on a pipeline between the filter (2) and the sedimentation solid recovery tank (22).

4. A multi-component chemical wastewater treatment apparatus according to claim 3 and wherein: an oscillator (25) is arranged at the side part of the filter screen (18) in the filter (2).

5. A multi-component chemical wastewater treatment apparatus according to claim 3 and wherein: the filter (2) and the sedimentation solid recovery tank (22) are communicated with a motor (26) arranged above the pipeline, and an output shaft of the motor (26) is fixedly connected with the top center position of a round conical loosening rotary head (27).

6. A multi-component chemical wastewater treatment apparatus according to claim 1 and wherein: and exhaust pipes (28) are arranged at the tops of the sedimentation tank (1) and the demulsification tank (3).

7. A multi-component chemical wastewater treatment apparatus according to claim 1 and wherein: the internal cavity of observation window (41) department set up, one side opening that observation window (41) are located demulsification jar (3) sets up and sets up separation otter board (29) in the opening, one side that keeps away from separation otter board (29) of observation window (41) sets up transparent plate (30), set up first floater (31) and second floater (32) in the cavity in observation window (41).

8. A multi-component chemical wastewater treatment apparatus according to claim 1 and wherein: the stirring device is a microwave stirrer (33), and the microwave stirrer (33) is arranged at the side parts of the sedimentation tank (1) and the demulsification tank (3).

9. A multi-component chemical wastewater treatment apparatus according to claim 1 and wherein: an absorber (34) and a liquid outlet pump (35) are arranged on the liquid outlet pipe (11).

10. A multi-component chemical wastewater treatment plant according to claim 1 or 9, characterized in that: the other end of the liquid outlet pipe (11) is respectively communicated with the tops of the high-density organic solvent recovery tank (36), the mixed water phase recovery tank (37) and the low-density organic solvent recovery tank (38) through pipelines, and a sixth electromagnetic valve (39) is respectively arranged on connecting pipelines of the liquid outlet pipe (11) and the high-density organic solvent recovery tank (36), the mixed water phase recovery tank (37) and the low-density organic solvent recovery tank (38).