CN115057587A - Wastewater treatment system and wastewater treatment method for rhinestone - Google Patents

Wastewater treatment system and wastewater treatment method for rhinestone Download PDF

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Publication number
CN115057587A
CN115057587A CN202210755820.6A CN202210755820A CN115057587A CN 115057587 A CN115057587 A CN 115057587A CN 202210755820 A CN202210755820 A CN 202210755820A CN 115057587 A CN115057587 A CN 115057587A
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sludge
ditch
tank
collecting
wastewater
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CN115057587B (en
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周宇
赵刚
叶卫
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Hubei Yuxing Crystal Jewelry Co ltd
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Hubei Yuxing Crystal Jewelry Co ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a wastewater treatment system and a wastewater treatment method for a rhinestone, and belongs to the technical field of rhinestones. The device comprises a biochemical treatment device, a polishing wastewater pretreatment device, a circular grinding wastewater pretreatment device and a neutralization reaction tank, wherein the polishing wastewater pretreatment device and the circular grinding wastewater pretreatment device respectively comprise a collection ditch, a sedimentation tank, a clean water tank, a sludge collection tank, a filter press, a sludge ditch and a walking sludge pump; the collecting ditch is connected with the settling basin, the settling basin overflows to the clean water basin, the clean water of the clean water basin is recycled, the sludge ditch is connected with the sludge collecting basin, the settling basin and the sludge collecting basin are both connected with the filter press, the filtrate outlet of the filter press of the grinding and polishing wastewater pretreatment device is connected with the neutralization reaction tank, the filtrate outlet of the filter press of the circular grinding wastewater pretreatment device is connected with the neutralization reaction tank and the clean water basin, and the neutralization reaction tank is connected with the biochemical treatment device.

Description

Wastewater treatment system and wastewater treatment method for rhinestone
Technical Field
The invention belongs to the technical field of rhinestones, and particularly relates to a wastewater treatment system and a wastewater treatment method of a rhinestone.
Background
The rhinestone is an ornament accessory with wide application, and is mainly applied to the fields of ornaments, artware, clothes, shoes and the like. The water drill manufacturing process mainly comprises two steps of a front step and a rear step, wherein the first part of the front step is the water drill shape manufacturing (two ends are semi-finished products with sharp parts), the first part of the front step is realized mainly by automatic control of equipment (a full-automatic grinding and polishing machine), the second part of the rear step is the subsequent processing of the semi-finished products, and the process mainly comprises the working procedures of plastic sucking, circular grinding and the like. A large amount of waste water is generated in the grinding and polishing process, and the waste water contains a cleaning agent for cleaning the bead blank, a component of a rhinestone (the main component is silicon dioxide and contains a small amount of other components), a component of a grinding and polishing roller, lubricating oil and the like; similarly, the circular grinding process generates a large amount of waste water containing a cleaning agent for cleaning the rhinestones (for cleaning off the rosin, the grinding residues, and the like), components of the rhinestones, components of the circular grinding discs, components of the plastic suction discs (the plastic suction discs are ground together in the circular grinding), glue, lubricating oil, and the like. In the prior art, grinding and polishing wastewater (alkalescence) and circular grinding wastewater (alkalescence) are mixed and then sent to a biochemical treatment device for treatment, and the mixed wastewater meets the standard and then sent to a municipal wastewater treatment plant for treatment. The applicant found that water drilling wastewater is significantly different from conventional industrial wastewater: firstly, the main component is silicon dioxide, and the possibility of recycling is realized; secondly, the solid content is high, and the method is not suitable for directly feeding the solid content into a biochemical treatment device; thirdly, the main component of the plastic sucking disc is PVC, so that the possibility of recycling exists; fourth, the amount of wastewater is large, and the treatment capacity of the biochemical treatment device needs to be large.
Disclosure of Invention
In order to solve the above problems, the present invention provides a wastewater treatment system and a wastewater treatment method for rhinestones, and applicants find that solid matters in polishing and circular grinding wastewater have a strong adsorption capacity and are very easy to be settled by a flocculant, clear water (pH of about 7.5) obtained by settling wastewater by the flocculant can be recycled, main pollutants are adsorbed in sludge, filtrate (pH of 10, which is higher) obtained by filter-pressing sludge is neutralized and then sent to a biochemical treatment device, the amount of the filtrate is small, and the requirement on the treatment capacity of the biochemical treatment device is low. Wherein, the waste water of the circular mill contains a large amount of PVC solid matters, the sedimentation speed (the flocculation speed of the PVC is higher) and the adsorption capacity to pollutants are changed (impurities after adsorption are not easy to enter into filtrate after filter pressing), partial PVC can be recovered, and the filter pressing which meets the requirements can be recycled. The technical scheme is as follows:
on one hand, the embodiment of the invention provides a wastewater treatment system of a rhinestone, which comprises a biochemical treatment device, a grinding and polishing wastewater pretreatment device, a circular grinding wastewater pretreatment device and a neutralization reaction tank 8, wherein the grinding and polishing wastewater pretreatment device and the circular grinding wastewater pretreatment device respectively comprise a collection ditch, a sedimentation tank, a clean water tank, a sludge collection tank, a filter press, a sludge ditch parallel to the collection ditch and a walkable sludge pump capable of reciprocating in the collection ditch and delivering sludge into the sludge ditch, the water inlet end of the collection ditch of the grinding and polishing wastewater pretreatment device is used for collecting the grinding and polishing wastewater, and the water inlet end of the collection ditch of the circular grinding wastewater pretreatment device is used for collecting the circular grinding wastewater; the play water end of collecting the ditch is connected with the sedimentation tank that corresponds, the sedimentation tank overflow to the clean water basin that corresponds, the clear liquid retrieval and utilization in clean water basin, the play water end of mud ditch is connected with the mud collecting pit that corresponds, the bottom of sedimentation tank and mud collecting pit all are connected with the pressure filter that corresponds through the pipeline of taking pressure filtration pump and valve group, the filtrating export of the pressure filter of waste water pretreatment devices is thrown in the mill passes through the pipeline and is connected with neutralization reaction tank 8, the filtrating export of pressure filter of circle mill waste water pretreatment devices passes through the pipeline and is connected with neutralization reaction tank 8 and the clean water basin that corresponds, neutralization reaction tank 8 is connected with biochemical treatment device.
Further, the wastewater treatment system of the rhinestone in the embodiment of the present invention further includes a flocculant adding device 9, and the flocculant adding device 9 is connected with the water inlet ends of the two collecting ditches through a pipeline with a control valve.
Wherein, the collecting groove in the embodiment of the invention is arranged along the front and back direction; the walking sludge pump comprises a walking vehicle 71 which can move in the collecting ditch, a plurality of walking wheels 72 at the bottom of the walking vehicle 71, two steel wire rope traction structures 73 at the front end and the rear end of the collecting ditch, a vertical dredging pump 74 which is vertically arranged on the walking vehicle 71, two guide plates 75 at the left side and the right side of the walking vehicle 71 and a sludge discharge pipe 76 at the outlet of the vertical dredging pump 74, the guide plate 75 is provided in the front-rear direction and is located at the adjacent inner side of the trench wall of the corresponding side, the traveling wheels 72 are provided in the left-right direction, the upper side of the walking vehicle 71 is a cone bucket-shaped structure with a big top and a small bottom, the pump inlet 77 at the bottom of the vertical desilting pump 74 is fixed at the bottom of the cone bucket-shaped structure and penetrates through the walking vehicle 71 downwards, the hopper walls on the left side and the right side of the cone-shaped structure are provided with V-shaped notches 78 which are open towards the corresponding side ditch walls, and the steel wire ropes of the two steel wire rope traction structures 73 on the front end and the rear end are respectively connected with the front side and the rear side of the walking vehicle 71 and are respectively wound and unwound; the sludge discharging pipe 76 is located above the corresponding collecting ditch and the corresponding sludge ditch, and the other end of the sludge discharging pipe is located right above the corresponding sludge ditch.
Specifically, the number of the traveling wheels 72 in the embodiment of the present invention is four, the four traveling wheels 72 are arranged in a rectangular shape, two traveling wheels 72 are arranged side by side in the front and back direction on both the left and right sides of the traveling vehicle 71, a fixing plate 79 is arranged between the V-shaped notch 78 and the guide plate 75 on the same side along the left and right direction, and the traveling wheels 72 are arranged on the lower side of the corresponding fixing plate 79; the front and rear ends of the guide plate 75 are bent inward in such a manner as to extend outward relative to the corresponding side of the traveling vehicle 71.
Specifically, the walking vehicle 71 in the embodiment of the present invention includes a front bucket wall on the front side, a rear bucket wall on the rear side, a left bucket wall on the left side, and a right bucket wall on the right side, where the front bucket wall is obliquely downward from front to rear, the rear bucket wall is obliquely downward from rear to front, the left bucket wall is obliquely downward from left to right, the right bucket wall is obliquely downward from right to left, the front bucket wall, the rear bucket wall, the left bucket wall, and the right bucket wall enclose a cone-shaped structure, the bottoms of the front bucket wall and the rear bucket wall are intersected, the middle of the intersection line of the front bucket wall and the rear bucket wall is provided with a pump inlet 77, the left bucket wall and the right bucket wall are both provided with V-shaped notches 78, the V-shaped notches 78 are arranged in the left-right direction, and the tips of the V-shaped notches 78 are opposite to the pump inlet 77.
Preferably, a grille 10 is disposed in the collecting channel of the embodiment of the present invention between the water inlet end thereof and the wire rope towing structure 73 on the corresponding side.
Preferably, the polishing wastewater pretreatment device in the embodiment of the present invention further includes a pre-settling trench 18; the water inlet end of the pre-settling ditch 18 is used for collecting polishing wastewater, the water outlet end of the pre-settling ditch is communicated with the water inlet end of the corresponding collecting ditch, the pre-settling ditch and the corresponding collecting ditch share one ditch wall, and the pre-settling ditch and the corresponding sludge ditch are respectively positioned at two sides of the corresponding collecting ditch; the collecting ditch and the sludge ditch corresponding to the collecting ditch are arranged side by side and share a ditch wall, and the sludge ditch of the grinding and polishing wastewater pretreatment device and the collecting ditch of the circular grinding wastewater pretreatment device are arranged side by side and share a ditch wall.
Wherein, the polishing wastewater pretreatment device in the embodiment of the invention comprises a first collecting ditch 11, a first sedimentation tank 12, a first clean water tank 13, a first sludge collecting tank 14, a first filter press 15, a first sludge ditch 16 parallel to the first collecting ditch 11, and a first walkable sludge pump 17 which can reciprocate in the first collecting ditch 11 and send sludge into the first sludge ditch 16, the water inlet end of the first collecting ditch 11 is used for collecting polishing waste water, the water outlet end of the first collecting ditch is connected with a first sedimentation tank 12, the first sedimentation tank 12 overflows to a first clean water tank 13, the liquid in the first clean water tank 13 is sent to a grinding and polishing process for reuse, the water outlet end of the first sludge ditch 16 is connected with a first sludge collecting tank 14, the bottom of the first sedimentation tank 12 and the first sludge collecting tank 14 are both connected with a first filter press 15 through pipelines with a pressure filter pump and a valve group, and the filtrate outlet of the first filter press 15 is connected with the neutralization reaction tank 8 through a pipeline; the circular grinding wastewater pretreatment device comprises a second collecting ditch 21, a second sedimentation tank 22, a second clean water tank 23, a second sludge collecting tank 24, a second filter press 25, a second sludge ditch 26 parallel to the second collecting ditch 21, and a second walkable sludge pump 27 which can reciprocate in the second collecting ditch 21 and send sludge into the second sludge ditch 26, the water inlet end of the second collecting channel 21 is used for collecting the circular grinding wastewater, and the water outlet end thereof is connected with the second sedimentation tank 22, the second sedimentation tank 22 overflows to a second clean water tank 23, the liquid in the second clean water tank 23 is sent to the circular grinding process for reuse, the water outlet end of the second sludge ditch 26 is connected with a second sludge collecting tank 24, the bottom of the second sedimentation tank 22 and the second sludge collecting tank 24 are both connected with a second filter press 25 through pipelines with a pressure filter pump and a valve group, the filtrate outlet of the second filter press 25 is connected with the neutralization reaction tank 8 and the second clean water tank 23 through pipelines and valve sets.
In another aspect, an embodiment of the present invention further provides a wastewater treatment method, where the method includes:
and (3) pretreating grinding and polishing wastewater as follows:
s101: the first collecting channel 11 collects the grinding and polishing wastewater and adds a flocculating agent;
s102: the sludge at the bottom of the first collecting channel 11 is sent to a first sludge channel 16 by a first walkable sludge pump 17;
s103: the sludge in the first sludge ditch 16 is sent to the first sludge collecting tank 14 for storage;
s104: the wastewater in the first collection ditch 11 is sent to a first sedimentation tank 12 for sedimentation;
s105: clear water in the first sedimentation tank 12 is sent to a first clear water tank 13 for storage;
s106: the sludge at the bottom of the first settling tank 12 is intermittently sent to a first filter press 15;
s107: the sludge in the first sludge collecting tank 14 is sent to a first filter press 15;
s108: the filtrate of the first filter press 15 is sent to a neutralization reaction tank 8, and the filter residue is sent out as solid waste;
s109: supplementing or not supplementing clear water in the first clear water tank 13 and sending the clear water to a grinding and polishing procedure for recycling;
pretreatment of circular grinding wastewater, as follows:
s201: the second collecting channel 21 collects the circular mill wastewater and adds a flocculating agent;
s202: the sludge at the bottom of the second collecting channel 21 is sent to a second sludge channel 26 by a second walkable sludge pump 27;
s203: the sludge in the second sludge ditch 26 is sent to the second sludge collecting tank 24 for storage;
s204: the wastewater in the second collection ditch 21 is sent to a second sedimentation tank 22 for sedimentation;
s205: the clean water in the second sedimentation tank 22 is sent to a second clean water tank 23 for storage;
s206: the sludge at the bottom of the second settling tank 22 is intermittently sent to a second filter press 25;
s207: the sludge in the second sludge collecting tank 24 is sent to a second filter press 25;
s208: filter residues obtained by filter pressing the sludge in the second sludge ditch 26 through the second filter press 25 are used for recovering PVC, and the filter residues obtained by filter pressing the sludge in the second sedimentation tank 22 through the second filter press 25 are sent out as solid waste; detecting the pH value of the filtrate, if the pH value is less than 7.8, sending the filtrate to a second clean water tank 23, and if the pH value is more than or equal to 7.8, sending the filtrate to a neutralization reaction tank 8;
s209: supplementing or not supplementing clear water in the second clear water tank 23 and sending to the round grinding process for recycling;
alkaline wastewater pretreatment as follows:
s301: adding acid into the neutralization reaction tank 8 to adjust the pH value of the wastewater to 6.8-7.5;
s302: sending the neutralized wastewater to a biochemical treatment device for biochemical treatment;
wherein, in steps S101 and S201, the flocculant is polyaluminium chloride; in step S102, the first walkable sludge pump 17 intermittently moves back and forth; in step S202, the second walkable sludge pump 27 intermittently reciprocates.
Wherein, in step S101, the dosage of the flocculating agent is 150-250g/m 3 Waste water; in step S201, the dosage of the flocculating agent is 70-120g/m 3 And (4) waste water.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: the embodiment of the invention provides a wastewater treatment system and a wastewater treatment method for a rhinestone, and the applicant finds that solid matters in grinding, polishing and circular grinding wastewater have strong adsorption capacity and are very easy to be settled by a flocculating agent, clear water (pH is about 7.5) obtained after wastewater is settled by the flocculating agent can be recycled, main pollutants are adsorbed in sludge, filtrate (with higher pH value which can reach 10) obtained after sludge filter pressing is neutralized and then is sent to a biochemical treatment device, the amount of the filtrate is less, and the requirement on the treatment capacity of the biochemical treatment device is lower. In the prior art, filter-pressing filtrate is generally clear liquid and has good water quality, but in the patent, the filter-pressing filtrate is polluted liquid instead of the polluted liquid due to the adsorption capacity of solid substances and cannot be recycled. Wherein, the waste water of the circular mill contains a large amount of PVC solid matters, the sedimentation speed (the flocculation speed of the PVC is higher) and the adsorption capacity to pollutants are changed (impurities after adsorption are not easy to enter the filtrate after filter pressing), partial PVC can be recovered, and the filter pressing filtrate which meets the requirements can be recycled. In addition, the invention adopts the combination of the sludge ditch, the walking sludge pump and the collecting ditch, can quickly reduce the solid content of the wastewater (simultaneously recover the PVC and realize the sedimentation during the conveying), reduces the burden of the sedimentation process, and improves the speed of wastewater treatment to ensure the normal operation of water drilling processing. More sludge at the bottom of the collecting channel can be sucked out by a walking sludge pump with a special structure. The cost of wastewater treatment is low.
Drawings
FIG. 1 is a schematic block diagram of a water treatment system for a water drill according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a wastewater treatment system of a water drill according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of the combination of the walking vehicle and the vertical dredging pump;
fig. 4 is a schematic view of the structure of the roof of the traveling vehicle.
In the figure: 11 a first collecting ditch, 12 a first settling pond, 13 a first clean water pond, 14 a first sludge collecting pond, 15 a first filter press, 16 a first sludge ditch, 17 a first walking sludge pump and 18 a pre-settling ditch;
21 a second collecting channel, 22 a second sedimentation tank, 23 a second clean water tank, 24 a second sludge collecting tank, 25 a second filter press, 26 a second sludge channel and 27 a second walking sludge pump;
71 traveling vehicles, 72 traveling wheels, 73 steel wire rope traction structures, 74 vertical desilting pumps, 75 guide plates, 76 sludge discharge pipes, 77 pump inlets, 78V-shaped notches and 79 fixing plates;
8 a neutralization reaction tank, 9 a flocculating agent adding device and 10 grids.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 2, embodiment 1 provides a wastewater treatment system for a rhinestone, which includes a biochemical treatment device, a polishing wastewater pretreatment device, a circular polishing wastewater pretreatment device, a neutralization reaction tank 8 (adding acid), and the like. The grinding and polishing wastewater pretreatment device and the circular grinding wastewater pretreatment device respectively comprise a collection ditch, a sedimentation tank, a clean water tank, a sludge collection tank, a filter press, a sludge ditch parallel to the collection ditch, a walkable sludge pump and the like, wherein the walkable sludge pump can reciprocate in the collection ditch and convey sludge into the sludge ditch, the water inlet end of the collection ditch of the grinding and polishing wastewater pretreatment device is used for collecting grinding and polishing wastewater, and the water inlet end of the collection ditch of the circular grinding wastewater pretreatment device is used for collecting circular grinding wastewater. The water outlet end of the collecting channel is connected with the corresponding sedimentation tank, clear water in the sedimentation tank overflows to the corresponding clear water tank, and clear water in the clear water tank is recycled. The water outlet end of the sludge ditch (the water inlet end of the sludge ditch is closed) is connected with a corresponding sludge collecting tank, and the bottom of the sedimentation tank (periodically or when a certain amount of sludge is obtained, the sludge is output) and the sludge collecting tank are both connected with a corresponding filter press through pipelines with a pressure filter pump and a valve group. A filtrate outlet (the pH value of the wastewater is about 10) of a filter press of the polishing wastewater pretreatment device is connected with the neutralization reaction tank 8 through a pipeline, and a filtrate outlet (the water quality of the wastewater is better than that of the filtrate of the polishing wastewater pretreatment device, the pH value is 7.5-9, and the filtrate recycling meeting the requirements) of the filter press of the circular polishing wastewater pretreatment device is connected with the neutralization reaction tank 8 and a corresponding clean water tank through a pipeline. The neutralization reaction tank 8 is connected with a biochemical treatment device, and the wastewater treated by the biochemical treatment device is sent to a municipal wastewater treatment plant. Wherein, the sedimentation tank in this embodiment comprises one or more sedimentation tanks connected in series.
Further, referring to fig. 1-2, the wastewater treatment system of the rhinestone in the embodiment of the present invention further includes a flocculant adding device 9, and the flocculant adding device 9 is connected with the water inlet ends of the two collecting ditches through a pipeline with a control valve.
For convenience of description, the collecting groove is arranged along the front and back direction; of course, the collecting channels may also be arranged in other directions. Referring to fig. 2-4, the sludge pump includes a traveling vehicle 71 (a rectangular structure arranged in the front-back direction) capable of moving in the collection channel, a plurality of traveling wheels 72 at the bottom of the traveling vehicle 71, two wire rope traction structures 73 (output wires are arranged in the front-back direction) at the front end and the rear end of the collection channel (the water inlet end and the water outlet end of the collection channel), a vertical dredging pump 74 (a motor is located above the liquid level) vertically arranged on the traveling vehicle 71, two guide plates 75 (for guiding the traveling vehicle 71 in the front-back direction) at the left side and the right side of the traveling vehicle 71, a sludge discharge pipe 76 at the outlet of the vertical dredging pump 74, and the like. The guide plate 75 is disposed in the front-back direction, is located at the adjacent inner side of the trench wall of the corresponding side, and may be a vertically disposed rectangular plate. The traveling wheels 72 are disposed in the left-right direction. The upper side of the walking vehicle 71 is a cone bucket-shaped structure with a large upper part and a small lower part so as to collect more sludge, a pump inlet 77 (the bottom and the periphery of the pump can pump the sludge) at the bottom of the vertical desilting pump 74 is fixed at the bottom of the cone bucket-shaped structure and downwards penetrates through the walking vehicle 71, and the bucket walls at the left side and the right side of the cone bucket-shaped structure are provided with V-shaped notches 78 (which are convenient for collecting the sludge and arranging the walking wheels 72) which are corresponding to the openings of the side ditch walls. The wire ropes of the two wire rope traction structures 73 at the front and rear ends are respectively connected with the front and rear sides of the traveling vehicle 71 and are respectively wound and unwound to allow the traveling vehicle 71 to reciprocate in the front and rear directions. The sludge discharge pipe 76 is located above the corresponding collection trench and sludge trench, and the other end thereof is located right above the corresponding sludge trench, and is disposed in the left-right direction.
Specifically, referring to fig. 3 to 4, the number of the traveling wheels 72 in the embodiment of the present invention is four, the four traveling wheels 72 are arranged in a rectangular shape, two traveling wheels 72 are respectively arranged on the left and right sides of the traveling vehicle 71 in parallel, a fixing plate 79 (four in total, arranged in a rectangular shape) is arranged between the V-shaped notch 78 and the guide plate 75 on the same side in the left-right direction, and the traveling wheels 72 are arranged on the lower side of the corresponding fixing plate 79. Both front and rear ends of the guide plate 75 are bent inward with respect to the outward extension of the corresponding side of the traveling vehicle 71.
Specifically, referring to fig. 3 to 4, the walking vehicle 71 in the embodiment of the present invention includes a front wall, a rear wall, a left wall and a right wall, the front wall is disposed obliquely downward from front to rear, the rear wall is disposed obliquely downward from rear to front, the left wall is disposed obliquely downward from left to right, the right wall is disposed obliquely downward from right to left, and the front wall, the rear wall, the left wall and the right wall enclose a cone-shaped structure. The bottom of the front bucket wall is crossed with the bottom of the rear bucket wall, the middle of the crossed line of the front bucket wall and the rear bucket wall is provided with a pump inlet 77, and the left bucket wall and the right bucket wall are both provided with V-shaped notches 78. The V-shaped notch 78 is arranged in the left-right direction, and its tip end faces the pump inlet 77 and its outer side is open.
Preferably, referring to fig. 1, a grating 10 (mainly for preventing floating objects from passing through) is arranged in the collecting channel of the embodiment of the present invention between the water inlet end of the collecting channel and the steel wire rope traction structure 73 on the corresponding side.
Preferably, referring to fig. 1, the polishing wastewater pretreatment device in the embodiment of the present invention further includes a pre-settling trench 18. The settling capacity of the grinding and polishing wastewater is weaker than that of the circular grinding wastewater, and the wastewater needs to be automatically flocculated and then added with a flocculating agent for flocculation. The pre-settling ditch 18 has a water inlet end for collecting polishing wastewater, a water outlet end communicated with the water inlet end of the corresponding collecting ditch (first collecting ditch 11), and a ditch wall shared by the pre-settling ditch and the corresponding collecting ditch (first collecting ditch 11), wherein the pre-settling ditch and the corresponding sludge ditch (first sludge ditch 16) are respectively positioned at two sides of the corresponding collecting ditch (first collecting ditch 11). The collecting channel and the corresponding sludge channel are arranged side by side and share a channel wall, and the sludge channel (the first sludge channel 16) of the polishing wastewater pretreatment device and the collecting channel (the second collecting channel 21) of the circular grinding wastewater pretreatment device are arranged side by side and share a channel wall.
The polishing wastewater pretreatment device in the embodiment of the invention comprises a first collecting channel 11, a first settling tank 12, a first clean water tank 13, a first sludge collecting tank 14, a first filter press 15, a first sludge channel 16 parallel to the first collecting channel 11, a first walkable sludge pump 17 which can reciprocate in the first collecting channel 11 and send sludge into the first sludge channel 16, and the like. The water inlet end of the first collecting ditch 11 is used for collecting polishing wastewater, the water outlet end of the first collecting ditch is connected with a first settling pond 12, the first settling pond 12 overflows to a first clean water pond 13, liquid in the first clean water pond 13 is sent to a polishing process for recycling, the water outlet end of a first sludge ditch 16 is connected with a first sludge collecting pond 14, the bottom of the first settling pond 12 and the first sludge collecting pond 14 are both connected with a first filter press 15 through pipelines with a pressure filter pump and a valve group, and the filtrate outlet of the first filter press 15 is connected with a neutralization reaction pond 8 through a pipeline. The circular grinding wastewater pretreatment device comprises a second collecting channel 21, a second sedimentation tank 22, a second clean water tank 23, a second sludge collecting tank 24, a second filter press 25, a second sludge channel 26 parallel to the second collecting channel 21, a second walkable sludge pump 27 and the like which can reciprocate in the second collecting channel 21 and send sludge into the second sludge channel 26, the water inlet end of the second collecting channel 21 is used for collecting circular mill wastewater, the water outlet end of the second collecting channel is connected with the second settling pond 22, the second settling pond 22 overflows to the second clean water pond 23, liquid in the second clean water pond 23 is sent to the circular mill process for recycling, the water outlet end of the second sludge channel 26 is connected with the second sludge collecting pond 24, the bottom of the second settling pond 22 and the second sludge collecting pond 24 are both connected (gated) with the second filter press 25 through pipelines with a pressure filter pump and a valve group, and the filtrate outlet of the second filter press 25 is connected with the neutralization reaction pond 8 and the second clean water pond 23 through pipelines and the valve group (gated according with requirements).
Wherein the length of the first collecting groove 11 and the second collecting groove 21 is not less than 30 m.
Pumps, valves and/or flow meters and the like are arranged among pipelines among the structures according to requirements.
Example 2
Referring to fig. 1 to 2, example 2 provides a wastewater treatment method using the wastewater treatment system of the rhinestone disclosed in example 1, the method comprising:
and (3) pretreating grinding and polishing wastewater as follows:
s101: the first collecting channel 11 collects the polishing wastewater and adds a flocculating agent.
S102: the sludge at the bottom of the first collecting chute 11 is sent to the first sludge chute 16 by the first walkable sludge pump 17.
S103: the sludge in the first sludge pit 16 is sent to the first sludge collecting tank 14 for storage.
S104: the wastewater in the first collection groove 11 is sent to a first sedimentation tank 12 for sedimentation.
S105: the clean water in the first sedimentation tank 12 is sent to a first clean water tank 13 for storage, and the clean water meets the reuse standard through detection.
S106: the sludge at the bottom of the first settling tank 12 is intermittently sent to a first filter press 15.
S107: the sludge from the first sludge collecting tank 14 is sent to a first filter press 15.
S108: the filtrate (pH value of 9-10) of the first filter press 15 is sent to a neutralization reaction tank 8, and the filter residue is sent out as solid waste.
S109: the first clean water tank 13 is supplied with or without clean water and sent to the polishing process for reuse.
Pretreatment of circular grinding wastewater, as follows:
s201: the second collecting channel 21 collects the circular mill wastewater and adds a flocculant.
S202: the sludge at the bottom of the second collecting chute 21 is sent to the second sludge chute 26 by the second walkable sludge pump 27.
S203: the sludge in the second sludge pit 26 is sent to the second sludge collecting tank 24 for storage.
S204: the waste water in the second collection groove 21 is sent to a second sedimentation tank 22 for sedimentation.
S205: the clean water in the second sedimentation tank 22 is sent to a second clean water tank 23 for storage, and the clean water meets the reuse standard through detection.
S206: the sludge in the bottom of the second settling tank 22 is intermittently sent to the second filter press 25, and when the sludge in the second settling tank 22 is sent to the second filter press 25, the sludge in the second sludge collecting tank 24 is temporarily stopped being sent to the second filter press 25.
S207: the sludge from the second sludge collecting tank 24 is sent to a second filter press 25.
S208: filter residues (detected to contain more PVC and a small amount of silicon dioxide) obtained by filter pressing the sludge in the second sludge ditch 26 through the second filter press 25 are used for recovering PVC, and filter residues (detected to contain more silicon dioxide and other pollutants and not beneficial to PVC recovery) obtained by filter pressing the sludge in the second sedimentation tank 22 through the second filter press 25 are sent out as solid wastes. And (3) detecting the pH value (usually 7.5-9.0) of the filtrate, if the pH value is less than 7.8 (can float up and down by 0.1 according to requirements), sending the filtrate to a second clean water tank 23 (the filtrate meets the recycling standard through detection), and if the pH value is more than or equal to 7.8, sending the filtrate to a neutralization reaction tank 8 (the filtrate does not meet the recycling standard through detection).
S209: the second clean water tank 23 is supplemented or not supplemented with clean water and sent to the circular grinding process for reuse.
Alkaline wastewater pretreatment as follows:
s301: and adding acid into the neutralization reaction tank 8 to adjust the pH value of the wastewater to 6.8-7.5.
S302: and (4) conveying the neutralized wastewater to a biochemical treatment device for biochemical treatment.
Wherein, in steps S101 and S201, the flocculant is polyaluminium chloride or the like. In step S102, the first walkable sludge pump 17 intermittently moves back and forth; in step S202, the second walkable sludge pump 27 intermittently reciprocates. Specifically, the length of the collecting channel is 40-60m, the flow rate of the vertical desilting pump 74 is 0.05-0.1 time of the flow rate of the waste water, and the walking sludge pump moves back and forth for 5-8 times/24 h.
Wherein, in step S101, the dosage of the flocculating agent is 150-250g/m 3 Waste water; the grinding and polishing wastewater has weaker flocculation and sedimentation capability and needs more flocculating agent. In step S201, the dosage of the flocculating agent is 70-120g/m 3 The flocculation settling capacity of the waste water and the circular grinding waste water is stronger, and the effect of adding less flocculating agent is multiple: firstly, reduce the residue of the flocculating agent in the PVC, secondly can collect ditch 21 department at the second and separate most PVC earlier, thirdly even add a smaller amount of flocculating agent, still can let the clear liquid accord with the standard of recycling in second sedimentation tank department 22, reducible cost.
In the embodiment of the present invention, "first" and "second" are used only for distinguishing purposes, and have no other special meaning.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The wastewater treatment system of the rhinestone comprises a biochemical treatment device and is characterized by further comprising a grinding and polishing wastewater pretreatment device, a round grinding wastewater pretreatment device and a neutralization reaction tank (8), wherein the grinding and polishing wastewater pretreatment device and the round grinding wastewater pretreatment device respectively comprise a collection ditch, a sedimentation tank, a clear water tank, a sludge collection tank, a filter press, a sludge ditch parallel to the collection ditch and a walkable sludge pump capable of reciprocating in the collection ditch and delivering sludge into the sludge ditch, the water inlet end of the collection ditch of the grinding and polishing wastewater pretreatment device is used for collecting the grinding and polishing wastewater, and the water inlet end of the collection ditch of the round grinding wastewater pretreatment device is used for collecting the round grinding and polishing wastewater; the play water end of collecting the ditch is connected with the sedimentation tank that corresponds, the sedimentation tank overflow to the clean water basin that corresponds, the clear liquid retrieval and utilization in clean water basin, the play water end of mud ditch is connected with the mud collecting pit that corresponds, the bottom of sedimentation tank and mud collecting pit all are connected with the pressure filter that corresponds through the pipeline of taking pressure filtration pump and valve group, the filtrating export of the pressure filter of the useless pretreatment of water device is thrown in the mill passes through the pipeline and is connected with neutralization reaction pond (8), the filtrating export of the pressure filter of useless pretreatment of water device of round mill passes through the pipeline and is connected with neutralization reaction pond (8) and the clean water basin that corresponds, neutralization reaction pond (8) are connected with biochemical treatment device.
2. The wastewater treatment system of the water drill according to claim 1, characterized in that the wastewater treatment system of the water drill further comprises a flocculant adding device (9), and the flocculant adding device (9) is connected with the water inlet ends of the two collecting ditches through a pipeline with a control valve.
3. The water drill wastewater treatment system according to claim 1, wherein the collection trench is provided in a front-rear direction; the sludge pump capable of walking comprises a walking vehicle (71) capable of moving in a collection ditch, a plurality of walking wheels (72) at the bottom of the walking vehicle (71), two steel wire rope traction structures (73) at the front end and the rear end of the collection ditch, a vertical desilting pump (74) vertically arranged on the walking vehicle (71), two guide plates (75) at the left side and the right side of the walking vehicle (71) and a sludge discharge pipe (76) at the outlet of the vertical desilting pump (74), wherein the guide plates (75) are arranged in the front and the rear direction and are positioned at the adjacent inner sides of the ditch walls of the corresponding sides, the walking wheels (72) are arranged in the left and right direction, the upper side of the walking vehicle (71) is of a cone bucket-shaped structure with a big top and a small bottom, a pump inlet (77) at the bottom of the vertical desilting pump (74) is fixed at the bottom of the cone bucket-shaped structure and downwards penetrates through the walking vehicle (71), the bucket walls at the left side and the right side of the cone bucket-shaped structure are provided with V-shaped notches (78) corresponding to the ditch walls, the steel wire ropes of the two steel wire rope traction structures (73) at the front end and the rear end are respectively connected with the front side and the rear side of the walking vehicle (71) and are respectively wound and unwound; the sludge discharge pipe (76) is positioned above the corresponding collection ditch and the corresponding sludge ditch, and the other end of the sludge discharge pipe is positioned right above the corresponding sludge ditch.
4. The waste water treatment system of the water drill according to claim 3, characterized in that the number of the walking wheels (72) is four, the four walking wheels (72) are arranged in a rectangular shape, the left side and the right side of the walking vehicle (71) are respectively provided with two walking wheels (72) in parallel, a fixing plate (79) is arranged between the V-shaped notch (78) and the guide plate (75) at the same side along the left-right direction, and the walking wheels (72) are arranged at the lower side of the corresponding fixing plate (79); the front end and the rear end of the guide plate (75) extend outwards and bend inwards relative to the corresponding side of the walking vehicle (71).
5. The wastewater treatment system of the water drill according to claim 3, wherein the walking vehicle (71) comprises a front bucket wall on the front side, a rear bucket wall on the rear side, a left bucket wall on the left side and a right bucket wall on the right side, the front bucket wall is arranged from front to back and obliquely downwards, the rear bucket wall is arranged from back to front and obliquely downwards, the left bucket wall is arranged from left to right and obliquely downwards, the right bucket wall is arranged from right to left and obliquely downwards, the front bucket wall, the rear bucket wall, the left bucket wall and the right bucket wall enclose a cone-shaped bucket structure, the front bucket wall intersects with the bottom of the rear bucket wall at the middle of the intersection line, a pump inlet (77) is arranged at the middle part of the intersection line, V-shaped notches (78) are arranged on the left bucket wall and the right bucket wall, and the V-shaped notches (78) are arranged along the left and right direction, and the tips of the V-shaped notches (78) are opposite to the pump inlet (77).
6. A system for treating waste water from a water drill according to claim 3, characterized in that a grating (10) is arranged in the collecting gutter between the water inlet end thereof and the wire rope pulling structure (73) on the corresponding side.
7. The rhinestone wastewater treatment system according to claim 1, wherein the polishing wastewater pretreatment device further comprises a pre-settling channel (18); the water inlet end of the pre-settling ditch (18) is used for collecting polishing wastewater, the water outlet end of the pre-settling ditch is communicated with the water inlet end of the corresponding collecting ditch, the pre-settling ditch and the corresponding collecting ditch share one ditch wall, and the pre-settling ditch and the corresponding sludge ditch are respectively positioned at two sides of the corresponding collecting ditch; the collecting ditch and the sludge ditch corresponding to the collecting ditch are arranged side by side and share a ditch wall, and the sludge ditch of the grinding and polishing wastewater pretreatment device and the collecting ditch of the circular grinding wastewater pretreatment device are arranged side by side and share a ditch wall.
8. The wastewater treatment system of a rhinestone according to claim 1, wherein the polishing wastewater pretreatment device comprises a first collection trench (11), a first sedimentation tank (12), a first clean water tank (13), a first sludge collection tank (14), a first filter press (15), a first sludge trench (16) parallel to the first collection trench (11), and a first walkable sludge pump (17) capable of reciprocating in the first collection trench (11) and sending sludge into the first sludge trench (16), wherein the first collection trench (11) has a water inlet end for collecting polishing wastewater and a water outlet end connected to the first sedimentation tank (12), the first sedimentation tank (12) overflows to the first clean water tank (13), the first clean water tank (13) has a liquid sent to a polishing process for reuse, and the first sludge trench (16) has a water outlet end connected to the first sludge collection tank (14), the bottom of the first sedimentation tank (12) and the first sludge collection tank (14) are both connected with a first filter press (15) through pipelines with a filter press pump and a valve group, and a filtrate outlet of the first filter press (15) is connected with the neutralization reaction tank (8) through a pipeline;
the circular grinding wastewater pretreatment device comprises a second collection ditch (21), a second sedimentation tank (22), a second clean water tank (23), a second sludge collection tank (24), a second filter press (25), a second sludge ditch (26) parallel to the second collection ditch (21) and a second walkable sludge pump (27) which can reciprocate in the second collection ditch (21) and send sludge into the second sludge ditch (26), wherein the water inlet end of the second collection ditch (21) is used for collecting circular grinding wastewater, the water outlet end of the second collection ditch is connected with the second sedimentation tank (22), the second sedimentation tank (22) overflows to the second clean water tank (23), liquid in the second clean water tank (23) is sent to the circular grinding process for recycling, the water outlet end of the second sludge ditch (26) is connected with the second sludge collection tank (24), and the bottom of the second sedimentation tank (22) and the second sludge collection tank (24) are connected with the second filter press (25) through a filter pump and a pipeline of a group under pressure, and a filtrate outlet of the second filter press (25) is connected with the neutralization reaction tank (8) and the second clean water tank (23) through a pipeline and a valve group.
9. A method of treating wastewater using the wastewater treatment system of the water drill according to claim 8, wherein the method comprises:
and (3) pretreating grinding and polishing wastewater as follows:
s101: the first collecting ditch (11) collects the grinding and polishing wastewater and adds a flocculating agent;
s102: the sludge at the bottom of the first collecting channel (11) is sent to a first sludge channel (16) by a first walkable sludge pump (17);
s103: the sludge in the first sludge ditch (16) is sent to a first sludge collecting tank (14) for storage;
s104: the wastewater in the first collection ditch (11) is sent to a first sedimentation tank (12) for sedimentation;
s105: clear water in the first sedimentation tank (12) is sent to a first clear water tank (13) for storage;
s106: the sludge at the bottom of the first sedimentation tank (12) is intermittently sent to a first filter press (15);
s107: the sludge in the first sludge collecting tank (14) is sent to a first filter press (15);
s108: the filtrate of the first filter press (15) is sent to a neutralization reaction tank (8), and the filter residue is sent out as solid waste;
s109: supplementing or not supplementing clear water in the first clear water tank (13) and sending the clear water to a grinding and polishing procedure for recycling;
pretreatment of circular grinding wastewater, as follows:
s201: the second collecting channel (21) collects the circular mill wastewater and adds a flocculating agent;
s202: the sludge at the bottom of the second collecting channel (21) is sent to a second sludge channel (26) by a second walkable sludge pump (27);
s203: the sludge in the second sludge ditch (26) is sent to a second sludge collecting tank (24) for storage;
s204: the wastewater in the second collection ditch (21) is sent to a second sedimentation tank (22) for sedimentation;
s205: clear water in the second sedimentation tank (22) is sent to a second clear water tank (23) for storage;
s206: the sludge at the bottom of the second sedimentation tank (22) is intermittently sent to a second filter press (25);
s207: the sludge in the second sludge collecting tank (24) is sent to a second filter press (25);
s208: filter residues obtained by filter pressing the sludge in the second sludge ditch (26) through a second filter press (25) are used for recovering PVC, and the filter residues obtained by filter pressing the sludge in the second sedimentation tank (22) through the second filter press (25) are sent out as solid wastes; detecting the pH value of the filtrate, if the pH value is less than 7.8, sending the filtrate to a second clean water tank (23), and if the pH value is more than or equal to 7.8, sending the filtrate to a neutralization reaction tank (8);
s209: supplementing or not supplementing clear water in a second clear water tank (23) and sending the clear water to the round grinding process for recycling;
alkaline wastewater pretreatment as follows:
s301: adding acid into the neutralization reaction tank (8) to adjust the pH value of the wastewater to 6.8-7.5;
s302: sending the neutralized wastewater to a biochemical treatment device for biochemical treatment;
wherein, in steps S101 and S201, the flocculant is polyaluminium chloride; in step S102, the first walkable sludge pump (17) intermittently reciprocates; in step S202, the second walkable sludge pump (27) intermittently reciprocates back and forth.
10. The wastewater treatment method according to claim 9, wherein the amount of the flocculant used in step S101 is 150-250g/m 3 Waste water; in step S201, the dosage of the flocculating agent is 70-120g/m 3 And (4) waste water.
CN202210755820.6A 2022-06-30 2022-06-30 Waste water treatment system and waste water treatment method for water drill Active CN115057587B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214060156U (en) * 2020-11-12 2021-08-27 湖北麻城市嘉丰石材有限公司 Recycling device for large-size cutting wastewater
CN113800678A (en) * 2021-09-15 2021-12-17 佛山市高明贝斯特陶瓷有限公司 Ceramic edging slag non-medicine separation and recovery method
CN215250022U (en) * 2021-04-13 2021-12-21 麻城市天福石业有限公司 Recycling system for stone plate processing wastewater
CN215250023U (en) * 2021-04-13 2021-12-21 麻城市福兴石材工艺制品有限公司 Stone material waste water's cyclic utilization system
CN215232680U (en) * 2021-04-13 2021-12-21 麻城市福兴石材工艺制品有限公司 Settling pond for stone wastewater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214060156U (en) * 2020-11-12 2021-08-27 湖北麻城市嘉丰石材有限公司 Recycling device for large-size cutting wastewater
CN215250022U (en) * 2021-04-13 2021-12-21 麻城市天福石业有限公司 Recycling system for stone plate processing wastewater
CN215250023U (en) * 2021-04-13 2021-12-21 麻城市福兴石材工艺制品有限公司 Stone material waste water's cyclic utilization system
CN215232680U (en) * 2021-04-13 2021-12-21 麻城市福兴石材工艺制品有限公司 Settling pond for stone wastewater
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