Printing and dyeing wastewater processor
Technical Field
The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a printing and dyeing wastewater treatment machine.
Background
In sewage treatment, printing and dyeing wastewater has the characteristics of large water quantity, high organic pollutant content, deep chromaticity, large alkalinity, large water quality change and the like, belongs to industrial wastewater which is difficult to treat, and is discharged in four processes of printing and dyeing, desizing, scouring, bleaching and mercerizing wastewater, dyeing and printing wastewater, printing and soap lye wastewater, finishing wastewater, and printing and dyeing wastewater is mixed wastewater of the above various wastewater or comprehensive wastewater except bleaching wastewater.
The wastewater treatment is to treat the wastewater by using physical, chemical and biological methods, so that the wastewater is purified, pollution is reduced, the wastewater is recovered and reused, and water resources are fully utilized.
In order to save water resources and reduce production cost, the wastewater generated in the printing and dyeing process needs to be purified by specific sewage treatment equipment, but the following defects exist in the wastewater treatment process:
First, a part of large suspended matters such as miscellaneous cloth, thread ends, flocks and the like remain in the printing and dyeing wastewater discharge process, and the suspended matters easily block the pipeline, and the conventional grid can filter most suspended matters, but the suspended matters are accumulated for a long time to easily block the grid, so that the suspended matters are difficult to clean, and the wastewater discharge efficiency is also affected.
In the sewage pool, a hydrolysis acidification pool and a contact oxidation pool are used, the hydrolysis acidification pool is used for converting organic matters which are difficult to biodegrade into organic matters which are easy to biodegrade, the contact oxidation pool is used for providing a nutrient source to enable the organic matters in the sewage to be absorbed and degraded by microorganisms, so that the water quality is purified, and after the sewage flows into the pool, different kinds of liquid medicine are required to be poured frequently to promote the degradation process, but in the manual medicine pouring process, the ratio of the poured liquid medicine is difficult to grasp, labor is relied, and the labor cost is increased.
In addition, in the hydrolysis acidification tank, the amount of sludge is directly related to the rate of organic matter conversion, and once the amount of activated sludge in the sewage is too small, the biodegradability of the sewage can be affected, so that the subsequent contact oxidation treatment is not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a printing and dyeing wastewater treatment machine, which overcomes the defects of the prior art by mutually matching a trash discharging mechanism, a circulating medicine feeding mechanism and a sludge reflux mechanism, and effectively solves the problems that suspended matters are difficult to clean, the proportion of liquid medicine is difficult to grasp, and the biodegradability of sewage is affected by too little amount of activated sludge in a hydrolytic acidification tank.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The dyeing wastewater treatment machine comprises a wastewater treatment tank, wherein a sewage tank, a multistage hydrolysis acidification tank, a multistage contact oxidation tank and symmetrically distributed sedimentation tanks are respectively arranged in the wastewater treatment tank, a impurity removing mechanism is arranged in the sewage tank, and comprises a filter tank arranged at the top of one side inner wall of the sewage tank, a filter screen arranged on the inner wall of the filter tank, an impurity removing rod rotatably connected to the inner wall of the top of the filter tank, and a motor connected to the outer wall of one end of the impurity removing rod through a transmission assembly;
The center of the outer wall of the top of the wastewater treatment tank is provided with a circulating medicine feeding mechanism, and the circulating medicine feeding mechanism comprises an electric sliding rail arranged on the outer wall of the top of the wastewater treatment tank, a fixed plate arranged on a sliding block of the electric sliding rail, a liquid storage tank which is arranged on the outer wall of the top of the fixed plate and distributed at equal intervals, a shunt pipe connected to the bottom of the outer wall of one side of the liquid storage tank, a water pump connected to the outer wall of the shunt pipe, a liquid discharge pipe connected to the inner wall of a water outlet of the water pump and a spray head arranged on the outer wall of the bottom of the liquid discharge pipe;
The sedimentation tank top is provided with mud reflux mechanism, and mud reflux mechanism including install the mud return pump between two sedimentation tanks, connect in mud suction pipe on mud pump suction inlet inner wall, connect in mud return pump suction inlet inner wall on mud return pipe, install the mud pipe on mud return pipe outer wall.
Preferably, the filter screen is distributed on the inner wall of the filter tank in an inclined way.
Preferably, an air floatation machine is arranged on the outer wall of the top of the wastewater treatment tank, and the air floatation machine is connected between the sewage tank and the multistage hydrolysis acidification tank.
Preferably, the inner walls of the multistage hydrolysis acidification tank and the multistage contact oxidation tank are provided with a stirrer.
Preferably, the inner walls of the sedimentation tanks which are symmetrically distributed are connected with mud pumping pipes with pump bodies, and one ends of the mud pumping pipes are connected with mud cake dryers.
Preferably, a clean water tank is arranged on the outer wall of one end of the wastewater treatment tank, and the clean water tank can be connected with the outer calandria net through a pipeline.
Preferably, a rubber belt is arranged in the filter screen, and scraping blades are welded on the outer wall of the impurity removing rod.
Preferably, the outer wall of one end of the liquid discharge pipe is connected with a positioning rod in a sliding manner, and the positioning rod is arranged on the outer wall of the top of the wastewater treatment tank.
Preferably, electromagnetic valves are arranged on the outer walls of the shunt tubes which are distributed equidistantly.
Preferably, the outer wall of one end of the sludge discharge pipe is arranged in the multistage hydrolysis acidification tank.
The beneficial effects of the invention are as follows:
1. According to the printing and dyeing wastewater treatment machine, as the motor rotates, the impurity removing rod can rotate in the filter tank continuously, and the scraping blade on the outer wall of the impurity removing rod can remove larger suspended matters on the surface of the filter screen, so that the electric impurity removing function is added on the basis of filtering of the filter screen, the suspended matters can be prevented from blocking the filter screen, the suspended matters can be removed rapidly, and the sewage discharge efficiency is ensured;
2. According to the printing and dyeing wastewater treatment machine, the spray heads can move above the multistage hydrolysis acidification tank and the multistage contact oxidation tank along with the electric slide rail, different liquid medicines can be sprayed into the multistage hydrolysis acidification tank and the multistage contact oxidation tank through the mutual matching of the liquid storage tank, the shunt pipes, the water pump and the liquid discharge pipe, and the multistage hydrolysis acidification tank is matched according to the requirements, does not need manual intervention, has high automation degree, and promotes the conversion efficiency of the multistage hydrolysis acidification tank for converting organic matters which are difficult to biodegrade into organic matters which are easy to biodegrade and the biodegradation efficiency of the multistage contact oxidation tank;
3. The printing and dyeing wastewater treatment machine is characterized in that a sludge reflux pump is arranged in a sedimentation tank, part of sludge in the sedimentation tank can flow back into a multistage hydrolysis acidification tank at the front end along a sludge suction pipe and a sludge reflux pipe through suction of the sludge reflux pump, so that the amount of activated sludge in the sedimentation tank is supplemented, the conversion rate of biodegradable organic matters in the hydrolysis acidification tank is promoted, the biodegradability of sewage is improved for an organic matter process which is easy to be biodegraded, and the subsequent contact oxidation treatment is facilitated.
Drawings
FIG. 1 is a schematic diagram of the whole structure of a printing and dyeing wastewater treatment machine according to the present invention;
FIG. 2 is a schematic view of a impurity removal mechanism of a printing and dyeing wastewater treatment machine according to the present invention;
FIG. 3 is a schematic diagram of a circulating drug delivery mechanism of a printing and dyeing wastewater treatment machine according to the present invention;
FIG. 4 is a schematic diagram of a circulating drug delivery mechanism of a printing and dyeing wastewater treatment machine according to the second embodiment of the invention;
fig. 5 is a schematic diagram of a sludge recirculation mechanism of a printing and dyeing wastewater treatment machine according to the present invention.
In the figure: 1. a wastewater treatment tank; 2. a impurity removing mechanism; 21. a filtering tank; 22. a filter screen; 23. a trash removal rod; 24. a motor; 3. a circulating medicine feeding mechanism; 31. an electric slide rail; 32. a fixing plate; 33. a liquid storage tank; 34. a shunt; 35. a water pump; 36. a liquid discharge pipe; 37. a spray head; 4. a sludge reflux mechanism; 41. a sludge reflux pump; 42. a suction pipe; 43. a sludge return pipe; 44. a mud pipe; 5. a sewage pool; 6. a multistage hydrolysis acidification tank; 7. a multistage contact oxidation pond; 8. a sedimentation tank; 9. a clean water tank; 10. an air floatation machine; 11. a stirrer; 12. a mud pumping pipe; 13. a mud cake dryer; 14. a rubber belt; 15. a wiper blade; 16. and a positioning rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
1-2, A dyeing wastewater treatment machine, including waste water treatment pond 1, waste water treatment pond 1 is inside to be provided with effluent water sump 5, multistage hydrolysis-acidification tank 6, multistage contact oxidation tank 7 and symmetric distribution's sedimentation tank 8 respectively, and effluent water sump 5 is inside to be provided with trash discharging mechanism 2, trash discharging mechanism 2 includes following parts:
Impurity removing mechanism 2: the impurity removing mechanism 2 comprises a filter tank 21 arranged at the top of the inner wall of one side of the sewage tank 5, a filter screen 22 arranged on the inner wall of the filter tank 21, an impurity removing rod 23 rotatably connected to the inner wall of the top of the filter tank 21, and a motor 24 connected to the outer wall of one end of the impurity removing rod 23 through a transmission assembly.
In this embodiment, along with the rotation of the motor 24, the impurity removing rod 23 continuously rotates in the filtering tank 21, and the scraping blade 15 on the outer wall of the impurity removing rod 23 can remove larger suspended matters on the surface of the filtering net 22, so that the electric impurity removing function is added on the basis of filtering the filtering net 22, the suspended matters can be prevented from blocking the filtering net 22, the suspended matters can be quickly cleaned, and the sewage discharge efficiency is ensured.
In a second embodiment, referring to fig. 3-4, a printing and dyeing wastewater treatment machine, a circulating medicine feeding mechanism 3 is arranged in the center of the outer wall of the top of a wastewater treatment tank 1, and the circulating medicine feeding mechanism 3 comprises the following components:
and (3) a circulating medicine feeding mechanism: the circulating medicine feeding mechanism 3 comprises an electric sliding rail 31 arranged on the outer wall of the top of the wastewater treatment tank 1, a fixed plate 32 arranged on a sliding block of the electric sliding rail 31, a liquid storage tank 33 arranged on the outer wall of the top of the fixed plate 32 and distributed equidistantly, a shunt tube 34 connected to the bottom of the outer wall of one side of the liquid storage tank 33, a water pump 35 connected to the outer wall of the shunt tube 34, a liquid discharge pipe 36 connected to the inner wall of a water outlet of the water pump 35, and a spray head 37 arranged on the outer wall of the bottom of the liquid discharge pipe 36.
In this embodiment, the spray head 37 can move above the multistage hydrolysis acidification tank 6 and the multistage contact oxidation tank 7 along with the electric slide rail 31, and can spray different liquid medicines into the multistage hydrolysis acidification tank 6 and the multistage contact oxidation tank 7 through the mutual cooperation of the liquid storage tank 33, the shunt pipe 34, the water pump 35 and the liquid discharge pipe 36, so that the automatic degree is high, the manual intervention is not needed according to the required proportion, and the conversion efficiency of the multistage hydrolysis acidification tank 6 for converting the organic matters which are difficult to be biodegraded into the organic matters which are easy to be biodegraded and the biodegradation efficiency of the multistage contact oxidation tank 7 are promoted.
In the third embodiment, referring to fig. 5, in a printing and dyeing wastewater treatment machine, a sludge backflow mechanism 4 is arranged at the top of a sedimentation tank 8, and the sludge backflow mechanism 4 comprises the following components:
Sludge recirculation mechanism 4: the sludge reflux mechanism 4 comprises a sludge reflux pump 41 arranged between the two sedimentation tanks 8, a sludge suction pipe 42 connected to the inner wall of a sludge suction port of the sludge reflux pump 41, a sludge reflux pipe 43 connected to the inner wall of a sludge discharge port of the sludge reflux pump 41, and a sludge discharge pipe 44 arranged on the outer wall of the sludge reflux pipe 43.
In this embodiment, a sludge reflux pump 41 is disposed in the sedimentation tank 8, and a part of sludge in the sedimentation tank 8 can flow back into the front-end multistage hydrolytic acidification tank 6 through a sludge suction pipe 42 and a sludge reflux pipe 43 by sucking the sludge reflux pump 41, so as to supplement the amount of activated sludge in the sedimentation tank 8, promote the conversion rate of biodegradable organic matters in the hydrolytic acidification tank, improve the biodegradability of sewage for the biodegradable organic matter process, and facilitate the subsequent contact oxidation treatment.
Referring to fig. 2, the filter screen 22 is inclined by 30 ° and distributed on the inner wall of the filter tank 21, a rubber belt 14 is provided inside the filter screen 22, and a wiper blade 15 is welded on the outer wall of the impurity removing rod 23.
Referring to fig. 1, an air floatation machine 10 is installed on the top outer wall of the wastewater treatment tank 1, and the air floatation machine 10 is connected between the sewage tank 5 and the multistage hydrolysis-acidification tank 6.
Referring to fig. 1, the inner walls of the multistage hydrolysis acidification tank 6 and the multistage contact oxidation tank 7 are provided with a stirrer 11.
Referring to fig. 1, the inner walls of symmetrically distributed sedimentation tanks 8 are all connected with a mud pumping pipe 12 with a pump body, and one end of the mud pumping pipe 12 is connected with a mud cake dryer 13.
Referring to fig. 1, a clean water tank 9 is installed on the outer wall of one end of the wastewater treatment tank 1, and the clean water tank 9 can be connected with an outer pipe network through a pipeline.
Referring to fig. 4, a positioning rod 16 is slidably coupled to an outer wall of one end of the drain pipe 36, and the positioning rod 16 is installed on a top outer wall of the wastewater treatment tank 1.
Referring to fig. 4, solenoid valves are mounted on the outer walls of the equally spaced shunt tubes 34.
Referring to fig. 1, an outer wall of one end of the sludge discharge pipe 44 is disposed inside the multistage hydrolysis-acidification tank 6.
Working principle: firstly, sewage discharged from a printing and dyeing mill filters larger suspended matters through a filter tank 21, automatically flows into a sewage tank 5 to play a role in uniform water quality, along with the rotation of a motor 24, a trash removing rod 23 continuously rotates in the filter tank 21, the larger suspended matters on the surface of a filter screen 22 can be removed by a scraping blade 15 on the outer wall of the trash removing rod 23, the sewage is pumped into an air flotation machine 10 through a lifting pump in the sewage tank 5, and colloid, suspended matters and oil in the sewage can be greatly reduced through the treatment of the air flotation machine 10;
The treated sewage automatically flows into a subsequent multistage hydrolysis acidification tank 6 for organic matter degradation, biological denitrification and dephosphorization and other treatments, the multistage hydrolysis acidification tank 6 is a technology for converting organic matters which are difficult to be biodegraded into organic matters which are easy to be biodegraded so as to improve the biodegradability of the sewage, the subsequent contact oxidation treatment is facilitated, and meanwhile, a stirrer 11 is arranged in the tank to play a role of mixing with water so as to prevent sludge sedimentation;
The sewage flows into the multistage contact oxidation pond 7 from the back, organic matters in the sewage are absorbed and degraded by microorganisms through providing a nutrient source, so that the water quality is purified, an aeration pipe can be adopted for aeration of the system, all wind sources adopt a fan for supplying air, meanwhile, a nitrifying liquid reflux pump can be matched in the pond to hydrolyze nitrifying liquid into an acidification pond so as to promote the degradation of the organic matters in the hydrolysis acidification pond, in the process, a spray head 37 can move along with an electric slide rail 31 above the multistage hydrolysis acidification pond 6 and the multistage contact oxidation pond 7, and under the action of a water pump 35, liquid medicine in a liquid storage tank 33 can spray different liquid medicines into the multistage hydrolysis acidification pond 6 and the multistage contact oxidation pond 7 through a shunt pipe 34 and a liquid discharge pipe 36;
The sewage automatically flows into the sedimentation tank 8 after flowing, a sludge reflux pump 41 is arranged in the sedimentation tank 8, part of sludge in the sedimentation tank 8 can flow back into the front-end multistage hydrolysis acidification tank 6 along a sludge suction pipe 42 and a sludge reflux pipe 43 by sucking of the sludge reflux pump 41, the activated sludge in the sedimentation tank 8 is supplemented by a sludge discharge pipe 44, a sludge suction pipe 12 is additionally arranged in the system, redundant sludge can be discharged into a mud cake dryer 13 for dehydration treatment, supernatant in the sedimentation tank 8 finally flows into a clean water tank 9, and a pipe network is discharged outside the clean water tank 9.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.