CN109607949B - Large-scale chemical sewage treatment device and method - Google Patents
Large-scale chemical sewage treatment device and method Download PDFInfo
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- CN109607949B CN109607949B CN201811615109.0A CN201811615109A CN109607949B CN 109607949 B CN109607949 B CN 109607949B CN 201811615109 A CN201811615109 A CN 201811615109A CN 109607949 B CN109607949 B CN 109607949B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a large-scale chemical sewage treatment device, which comprises a denitrification device, an aerobic tank, a sedimentation tank, a liquid treatment tank and a sludge treatment device which are sequentially communicated; wherein, the sludge treatment device comprises: a primary sludge treatment unit comprising: the mud inlet is formed in the upper side wall of the first shell, the top of the first shell is of an arc-shaped structure, and a plurality of hard brush strips are arranged at intervals on the top of the first shell; first filter plate, its structure that is convex area sets up in the middle part of first casing, and the one end of first filter plate is connected with the lateral wall of first casing, and the other end and the riser of first filter plate are fixed, second plate body vertical fixation is in first casing to separate the lower part of first casing for mutually independent stock solution space and play mud space, the upper portion space intercommunication of mud space and first casing, the stock solution space is through the filtration pore of first filter plate and the upper portion space intercommunication of first casing. The invention can effectively dehydrate the sludge while treating the sewage.
Description
Technical Field
The invention relates to the field of sewage treatment devices. More specifically, the invention relates to a large-scale chemical wastewater treatment device and a method.
Background
The wastewater discharged by chemical enterprises in chemical industry parks has the characteristics of complex quality, high ammonia nitrogen content, high salinity, high content of toxic substances and the like, and belongs to typical organic toxic, harmful and nondegradable industrial wastewater. The wastewater discharged by chemical enterprises in the chemical industry park reaches the take-over standard after being pretreated in the factory and then is discharged into a sewage treatment plant in the chemical industry park for centralized treatment, so that the centralized treatment concept of the industrial wastewater advocated and encouraged at present is also met. In the sewage treatment process, a large amount of sludge is discharged, the water content of the sludge is high and reaches more than 97 percent, and the sludge is easy to decay. Chemical industry garden needs special mud storage point to save, and the subdivision is handled in batches, because the moisture content height of mud, consequently need occupy a large amount of spaces and save, and in summer, the temperature is high, and high moisture content leads to the speed that mud breeies the bacterium to show and rises, and the problem of corruption appears more easily in mud.
Disclosure of Invention
The invention aims to provide a large-scale chemical wastewater treatment device and method, which can effectively dehydrate sludge while treating wastewater.
To achieve these objects and other advantages in accordance with the present invention, there is provided a large-scale chemical wastewater treatment apparatus comprising a denitrification apparatus, an aerobic tank, a sedimentation tank, a liquid treatment tank, and a sludge treatment apparatus, which are sequentially communicated; wherein, the sludge treatment device comprises:
a primary sludge treatment unit comprising:
the mud inlet is formed in the upper side wall of the first shell, the top of the first shell is of an arc-shaped structure, and a plurality of hard brush strips are arranged at intervals on the top of the first shell;
the second plate body is vertically fixed in the first shell so as to divide the lower part of the first shell into a liquid storage space and a mud outlet space which are mutually independent, the mud outlet space is communicated with the upper space of the first shell, and the liquid storage space is communicated with the upper space of the first shell through a filter hole of the first filter plate;
the water filtering hammer is arranged at the upper part of the first shell, the radian of the upper part of the water filtering hammer is the same as that of the first filter plate, and the eccentric shaft penetrates through the lower part of the water filtering hammer to drive the water filtering hammer to rotate;
the scraper is fixed on the water filtering hammer through the rotating shaft, the scraper of the scraper extends out of the lower part of the water filtering hammer, and the upper part of the scraper is provided with an opening so that the scraper and the water filtering hammer do not interfere with each other;
the pair of push rods are respectively arranged at two sides of the water filtering hammer and can push the scraper to rotate;
when the upper part of the water filtering hammer rotates to the upper part of the first shell, the bristles at the lower part of the brush strip and the water filtering hammer are mutually extruded; when the push rod pushes the scraper to the longest length of the push rod, the water filtering hammer rotates to enable the scraper to scrape and send sludge on the first filter plate to the sludge outlet space, and when the push rod is retracted and the water filtering hammer rotates, the scraper does not contact with the first shell and contacts with the lower part of the hard brush strip;
a secondary sludge treatment unit comprising:
the rotary drum is driven to rotate around a shaft by a first motor, a plurality of water outlet holes are formed in the outer wall of the rotary drum, the total area of the water outlet holes accounts for 1/7-1/5 of the total area of the side wall of the rotary drum, the bottom of the rotary drum is of a circular truncated cone-shaped structure with the diameter gradually reduced, the lower portion of the rotary drum is provided with an opening, and a feeding hole is formed above the rotary drum;
the second shell is sleeved outside the rotary drum and is not contacted with the rotary drum;
the third shell is arranged between the second shell and the rotary drum, the third shell extends downwards from the top of the second shell to a round platform-shaped structure at the bottom of the rotary drum to form a centrifugal liquid storage space, and the third shell is not in contact with the rotary drum;
one end of the connecting pipe is connected with the lower part of the mud outlet space, and the other end of the connecting pipe is arranged above the rotary drum.
Preferably, the scraper is provided with a sliding groove along the height direction thereof, and the pushing end of the pushing rod is slidably arranged in the sliding groove.
Preferably, the upper portion of apopore is provided with first plate body, and its lower part is provided with the second plate body, first plate body is 60 with the lateral wall contained angle of rotary drum lower part, the second plate body is 20 with the lateral wall contained angle on rotary drum upper portion, the upper end of second plate body is 1-20mm with the distance of first plate body, first plate body is 1.5 times of second plate body length at least, just when first plate body from top to bottom sets up, its length shortens gradually.
Preferably, the bottom of the second shell is provided with a bottom frame; further comprising:
the first rod body penetrates through the upper part of the rotary drum from the lower part of the second shell and is driven by the stepping motor to rotate in a forward and reverse reciprocating manner by 360 degrees;
several gasbag, it is loop configuration, is fixed in on the first body of rod, and the gasbag that reaches between the several gasbag and below is connected with first trachea, first trachea is stainless steel material, first trachea is close to the setting of the first body of rod, and second trachea one end is connected with the first trachea of below, and its other end passes third casing lateral wall and is connected with quick inflator, the second trachea is made for flexible material.
Preferably, the rotating speed of the stepping motor is 500-800 rpm.
Preferably, the liquid in the liquid storage space and the centrate storage space is delivered to a liquid treatment reservoir.
Preferably, a hot air generator is arranged at the lower part of the second shell;
the lower part of the first rod body is provided with a plurality of stirring blades along the axial direction;
a plurality of air holes are formed in the upper part of the third shell along the axial direction, a heat insulation layer is arranged on the outer wall of the third shell, and a condensation plate is arranged on the inner wall of the third shell; and a downward inclined guide plate is arranged in the third shell and is arranged above the air holes along the circumferential direction, and a gap of 2-3mm is formed between the guide plate and the rotary drum.
The sewage treatment method of the large-scale chemical sewage treatment device comprises the following steps:
adjusting the pH value of sewage to 7.5-8.8 in an adjusting tank, sequentially sending the sewage into a denitrification device, an aerobic tank and a sedimentation tank for treatment, and pumping liquid in the sedimentation tank into a liquid treatment tank, wherein a first reflux pump is arranged between the aerobic tank and the denitrification device, and the reflux ratio of liquid flow returning from the aerobic tank to the denitrification device is 100-200%; a second reflux pump is arranged between the sedimentation tank and the aerobic tank, and the reflux ratio of the liquid flow returning from the sedimentation tank to the aerobic tank is 100-200%;
and step two, conveying the sludge in each tank body to a sludge treatment device, and separating the sludge from the water.
The invention at least comprises the following beneficial effects: large-scale chemical wastewater treatment device can effectively reduce COD index in the sewage, also can effectively get rid of nutrient substance such as nitrogen, phosphorus in the sewage, can effectual dehydration to subsequent mud, and mud can reach the moisture content and be below 15% after multistage dehydration and drying process.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of a large-scale chemical wastewater treatment plant;
FIG. 2 is a schematic view of the structure of a sludge treatment apparatus;
FIG. 3 is a schematic view of the construction of the squeegee;
fig. 4 is a schematic view of the squeegee as it moves to the top of the first housing.
Reference numerals
101, a first shell, 102, a mud inlet, 103, hard brush strips, 104, a first filter plate, 105 risers, 106 liquid storage spaces, 107 mud outlet spaces, 108 water filtering hammers, 109 scraping plates, 110 push rods, 201 rotating drums, 202, a first motor, 203 water outlet holes, 204, a second shell, 205, a third shell, 206 centrifugal liquid storage spaces, 207 connecting pipes, 208, a first plate body, 209, a second plate body, 210 bottom frames, 211, a first rod body, 212 air bags, 213, a first air pipe, 214, a second air pipe, 215 a quick inflation device, 216, a stepping motor, 217 stirring blades, 218 air holes and 219 guide plates.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 2 to 4, the invention provides a large-scale chemical wastewater treatment device, which comprises a denitrification device, an aerobic tank, a sedimentation tank, a liquid treatment tank and a sludge treatment device which are sequentially communicated; wherein, the sludge treatment device comprises:
a primary sludge treatment unit comprising:
the mud inlet 102 is arranged on the upper side wall of the first shell 101, the top of the first shell 101 is of an arc-shaped structure, and a plurality of hard brush strips 103 are arranged at intervals on the top of the first shell;
the aperture of the first filter plate 104 is set to be smaller than the particle size of the minimum sludge, in this embodiment, the aperture of the first filter plate 104 is set to be 0.1mm, the first filter plate is arranged in the middle of the first shell 101 in an arc-shaped band, one end of the first filter plate 104 is connected with the side wall of the first shell 101, the other end of the first filter plate 104 is fixed to the vertical plate 105, the second plate 209 is vertically fixed in the first shell 101 to divide the lower part of the first shell 101 into a liquid storage space 106 and a sludge outlet space 107 which are independent of each other, the sludge outlet space 107 is communicated with the upper space of the first shell 101, and the liquid storage space 106 is communicated with the upper space of the first shell 101 through the filter holes of the first filter plate 104;
the water filtering hammer 108 is arranged at the upper part of the first shell 101, the radian of the upper part of the water filtering hammer 108 is the same as that of the first filter plate 104, and an eccentric shaft penetrates through the lower part of the water filtering hammer 108 to drive the water filtering hammer to rotate;
a scraper 109 fixed on the water filtering hammer 108 through a rotating shaft, wherein the scraper of the scraper 109 extends out of the lower part of the water filtering hammer 108, and the upper part of the scraper is provided with an opening so that the scraper 109 and the water filtering hammer 108 do not interfere with each other;
a pair of push rods 110 respectively arranged at two sides of the water filtering hammer 108 and arranged to push the scraper 109 to rotate;
when the upper part of the draining hammer 108 rotates to the upper part of the first casing 101, the bristles at the lower part of the brush strip and the draining hammer 108 are mutually extruded; when the upper part of the water filtering hammer 108 rotates to the first filter plate 104 of the first shell 101, the sludge can be squeezed, so that the water in the sludge is separated and enters the liquid storage space 106; when the push rod 110 pushes the scraper 109 to the longest length of the push rod 110, the water filtering hammer 108 rotates, so that the scraper 109 scrapes and sends the sludge on the first filter plate 104 to the sludge outlet space 107, and when the push rod 110 retracts and the water filtering hammer 108 rotates, the scraper 109 does not contact with the first shell 101 and contacts with the lower part of the hard brush strip 103.
A secondary sludge treatment unit comprising:
the rotary drum 201 is driven to rotate around a shaft by a first motor 202, a plurality of water outlet holes 203 are formed in the outer wall of the rotary drum 201, the total area of the water outlet holes 203 accounts for 1/7-1/5 of the total area of the side wall of the rotary drum 201, the bottom of the rotary drum 201 is of a truncated cone-shaped structure with gradually reduced diameter, the lower portion of the rotary drum 201 is open, and a feeding hole is formed above the rotary drum 201;
the second shell 204 is sleeved outside the rotary drum 201 and is not in contact with the rotary drum 201;
a third housing 205 arranged between the second housing 204 and the rotary drum 201, wherein the third housing 205 extends from the top of the second housing 204 to the bottom of the rotary drum 201 to form a centrifugate storage space 206 at the position of the circular truncated cone-shaped structure, and the third housing 205 is not in contact with the rotary drum 201;
one end of the connection pipe 207 is connected to the lower portion of the sludge discharge space 107, and the other end thereof is disposed above the drum 201.
In the large chemical sewage treatment device, after sewage is treated, sludge is pumped into the sludge treatment device, the sludge is continuously extruded by the rotation of the water filtering hammer 108, the separation of the sludge and water is accelerated, water drops enter the liquid storage space 106 through the first filter plate 104, when the upper part of the water filtering hammer 108 rotates to the top of the first shell 101, the sludge adhered to the water filtering hammer 108 is cleaned by the hard brush strips 103, the sludge falls onto the first filter plate 104, the cleaned water filtering hammer 108 extrudes the sludge again, after repeated times, the push rod 110 is started to push the scraper 109 out, the water filtering hammer 108 is rotated again, the scraper 109 can fully scrape the sludge on the first filter plate 104 and convey the sludge to the sludge outlet space 107, as shown in fig. 4, when the scraper 109 rotates to the top of the first shell 101, the hard brush strips 103 and the scraper 109 rub with each other to remove the sludge on the surface of the other, the cleaning effect is achieved, dewatering of newly entered sludge is waited, the sludge entering the sludge outlet space 107 is conveyed to the secondary sludge treatment unit through a sludge pump, the sludge enters the rotary drum 201 for centrifugal separation, moisture is thrown out of the water outlet holes 203 of the rotary drum 201 and enters the centrifugal liquid storage space 206, in order to prevent part of the sludge from being thrown out of the rotary drum 201, the first plate body 208 and the second plate body 209 are arranged, the gap between the first plate body 208 and the second plate body 209 is small, liquid mobility can well enter the centrifugal liquid storage space 206 along the first plate body 208, the rough friction force of the surface area of sludge particles is large, mobility difference is caused, and the sludge is finally intercepted by the first plate body 208 and the second plate body 209, so that separation of the sludge and.
In one embodiment, the scraper 109 is provided with a sliding slot along the height direction thereof, and the pushing end of the pushing rod 110 is slidably disposed in the sliding slot.
In one embodiment, a first plate 208 is disposed on the upper portion of the water outlet hole 203, a second plate 209 is disposed on the lower portion of the water outlet hole, an included angle between the first plate 208 and the side wall of the lower portion of the rotary drum 201 is 60 °, an included angle between the second plate 209 and the side wall of the upper portion of the rotary drum 201 is 20 °, a distance between the upper end of the second plate 209 and the first plate 208 is 1-20mm, the first plate 208 is at least 1.5 times the length of the second plate 209, and the length of the first plate 208 is gradually shortened when the first plate 208 is disposed from top to bottom.
In one embodiment, the bottom of the second shell 204 is provided with a bottom frame 210; further comprising:
a first rod 211 penetrating from the lower part of the second shell 204 to the upper part of the rotary drum 201 and driven by a stepping motor 216 to rotate forward and backward by 360 degrees;
According to the large-scale chemical sewage treatment device, the first rod body 211 and the air bag 212 are arranged, the air bag 212 is inflated layer by layer from bottom to top, sludge can be dispersed in different spaces in the height direction of the rotary drum 201, the advantages of sludge dispersion and higher dehydration efficiency are achieved, after dehydration is completed, the air bag 212 is deflated, so that the sludge on the air bag 212 finally enters the bottom of the second shell 204 for subsequent drying steps, the moisture content of the sludge can be reduced to 20% before the subsequent drying steps are performed, and the moisture content can be below 15% after drying treatment.
In one embodiment, the rotation speed of the step motor 216 is 500-800 rpm.
In one embodiment, the fluid in the reservoir space 106 and the centrate reservoir space 206 is delivered to a fluid processing reservoir.
In one embodiment, a hot air generator is disposed at the lower part of the second shell 204;
the lower part of the first rod body 211 is provided with a plurality of stirring blades 217 along the axial direction;
a plurality of air holes 218 are axially formed in the upper part of the third shell 205, an insulating layer is formed on the outer wall of the third shell 205, and a condensing plate is formed on the inner wall of the third shell 205; a guide plate 219 which inclines downwards is arranged above the air hole 218 in the third shell 205 along the circumferential direction, and a gap of 2-3mm is formed between the guide plate 219 and the rotary drum 201.
According to the large chemical sewage treatment device, after sludge enters the bottom of the third shell 205, the residual moisture in the sludge is evaporated by hot air of the hot air generator, the hot steam has low density and moves upwards to pass through the air holes 218 of the third shell 205, most of the hot steam is separated by the guide plate 219 and cannot move upwards, and the hot steam is condensed into liquid drops on the condensing plate through heat exchange.
The invention also provides a method for treating sewage by using the large-scale chemical sewage treatment device, which comprises the following steps as shown in figure 1:
adjusting the pH value of sewage to 7.5-8.8 in an adjusting tank, sequentially sending the sewage into a denitrification device, an aerobic tank and a sedimentation tank for treatment, and pumping liquid in the sedimentation tank into a liquid treatment tank, wherein a first reflux pump is arranged between the aerobic tank and the denitrification device, and the reflux ratio of liquid flow returning from the aerobic tank to the denitrification device is 100-200%; a second reflux pump is arranged between the sedimentation tank and the aerobic tank, and the reflux ratio of the liquid flow returning from the sedimentation tank to the aerobic tank is 100-200%;
and step two, conveying the sludge in each tank body to a sludge treatment device, and separating the sludge from the water.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. The large-scale chemical sewage treatment device is characterized by comprising a denitrification device, an aerobic tank, a sedimentation tank, a liquid treatment tank and a sludge treatment device which are sequentially communicated; wherein, the sludge treatment device comprises:
a primary sludge treatment unit comprising:
the mud inlet is formed in the upper side wall of the first shell, the top of the first shell is of an arc-shaped structure, and a plurality of hard brush strips are arranged at intervals on the top of the first shell;
the filter plate comprises a first filter plate, a second filter plate and a third filter plate, wherein the first filter plate is arranged in the middle of a first shell in an arc-shaped belt structure, one end of the first filter plate is connected with the side wall of the first shell, the other end of the first filter plate is fixed with a vertical plate, the vertical plate is vertically fixed in the first shell so as to divide the lower part of the first shell into a liquid storage space and a mud outlet space which are mutually independent, the mud outlet space is communicated with the upper space of the first shell, and the liquid storage space is communicated with the upper space of the first shell through a filter hole of the first filter plate;
the water filtering hammer is arranged at the upper part of the first shell, the radian of the upper part of the water filtering hammer is the same as that of the first filter plate, and the eccentric shaft penetrates through the lower part of the water filtering hammer to drive the water filtering hammer to rotate;
the scraper is fixed on the water filtering hammer through the rotating shaft, the scraper of the scraper extends out of the lower part of the water filtering hammer, and the upper part of the scraper is provided with an opening so that the scraper and the water filtering hammer do not interfere with each other;
the pair of push rods are respectively arranged at two sides of the water filtering hammer and can push the scraper to rotate;
when the upper part of the water filtering hammer rotates to the upper part of the first shell, the bristles at the lower part of the brush strip and the water filtering hammer are mutually extruded; when the push rod pushes the scraper to the longest length of the push rod, the water filtering hammer rotates to enable the scraper to scrape and send sludge on the first filter plate to the sludge outlet space, and when the push rod is retracted and the water filtering hammer rotates, the scraper does not contact with the first shell and contacts with the lower part of the hard brush strip;
a secondary sludge treatment unit comprising:
the rotary drum is driven to rotate around a shaft by a first motor, a plurality of water outlet holes are formed in the outer wall of the rotary drum, the total area of the water outlet holes accounts for 1/7-1/5 of the total area of the side wall of the rotary drum, the bottom of the rotary drum is of a circular truncated cone-shaped structure with the diameter gradually reduced, the lower portion of the rotary drum is provided with an opening, and a feeding hole is formed above the rotary drum;
the second shell is sleeved outside the rotary drum and is not contacted with the rotary drum;
the third shell is arranged between the second shell and the rotary drum, the third shell extends downwards from the top of the second shell to a round platform-shaped structure at the bottom of the rotary drum to form a centrifugal liquid storage space, and the third shell is not in contact with the rotary drum;
one end of the connecting pipe is connected with the lower part of the mud outlet space, and the other end of the connecting pipe is arranged above the rotary drum.
2. The large chemical wastewater treatment device according to claim 1, wherein the scraper is provided with a chute along a height direction thereof, and a pushing end of the pushing rod is slidably disposed in the chute.
3. The large chemical wastewater treatment device according to claim 1, wherein a first plate body is arranged at the upper part of the water outlet hole, a second plate body is arranged at the lower part of the water outlet hole, the included angle between the first plate body and the side wall at the lower part of the rotary drum is 60 degrees, the included angle between the second plate body and the side wall at the upper part of the rotary drum is 20 degrees, the distance between the upper end of the second plate body and the first plate body is 1-20mm, the length of the first plate body is at least 1.5 times that of the second plate body, and the length of the first plate body is gradually shortened when the first plate body is arranged from top to.
4. The large chemical wastewater treatment device according to claim 1, wherein a bottom frame is provided at the bottom of the second housing; further comprising:
the first rod body penetrates through the upper part of the rotary drum from the lower part of the second shell and is driven by the stepping motor to rotate in a forward and reverse reciprocating manner by 360 degrees;
several gasbag, it is loop configuration, is fixed in on the first body of rod, and the gasbag that reaches between the several gasbag and below is connected with first trachea, first trachea is stainless steel material, first trachea is close to the setting of the first body of rod, and second trachea one end is connected with the first trachea of below, and its other end passes third casing lateral wall and is connected with quick inflator, the second trachea is made for flexible material.
5. The large-scale chemical wastewater treatment device according to claim 4, wherein the rotation speed of the stepping motor is 500-800 rpm.
6. The large chemical wastewater treatment apparatus according to claim 1, wherein the liquid in the liquid storage space and the centrifugate storage space is transferred to the liquid treatment tank.
7. The large chemical wastewater treatment apparatus according to claim 4, wherein a hot air generator is provided at a lower portion of the second housing;
the lower part of the first rod body is provided with a plurality of stirring blades along the axial direction;
a plurality of air holes are formed in the upper part of the third shell along the axial direction, a heat insulation layer is arranged on the outer wall of the third shell, and a condensation plate is arranged on the inner wall of the third shell; and a downward inclined guide plate is arranged in the third shell and is arranged above the air holes along the circumferential direction, and a gap of 2-3mm is formed between the guide plate and the rotary drum.
8. The method for treating sewage by using the large-scale chemical sewage treatment device according to claim 1, comprising the steps of:
adjusting the pH value of sewage to 7.5-8.8 in an adjusting tank, sequentially sending the sewage into a denitrification device, an aerobic tank and a sedimentation tank for treatment, and pumping liquid in the sedimentation tank into a liquid treatment tank, wherein a first reflux pump is arranged between the aerobic tank and the denitrification device, and the reflux ratio of liquid flow returning from the aerobic tank to the denitrification device is 100-200%; a second reflux pump is arranged between the sedimentation tank and the aerobic tank, and the reflux ratio of the liquid flow returning from the sedimentation tank to the aerobic tank is 100-200%;
and step two, conveying the sludge in each tank body to a sludge treatment device, and separating the sludge from the water.
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| CN201811615109.0A CN109607949B (en) | 2018-12-27 | 2018-12-27 | Large-scale chemical sewage treatment device and method |
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| CN206244631U (en) * | 2016-11-28 | 2017-06-13 | 浙江科力尔环保设备有限公司 | A kind of sludge condensation and dehydrating integrated machine |
| CN107285585A (en) * | 2017-08-25 | 2017-10-24 | 深圳市花蘑菇网络科技有限公司 | A kind of sludge treatment equipment |
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| CN101993183A (en) * | 2009-08-14 | 2011-03-30 | 伊普国际有限公司 | Sludge dewatering device |
| CN203768177U (en) * | 2014-01-24 | 2014-08-13 | 王胜初 | Integrated sewage treatment system |
| CN104743751A (en) * | 2015-03-30 | 2015-07-01 | 杭州拓瑞博科技有限公司 | A/O (anaerobic/aerobiotic) sewage treatment process device and technique thereof |
| CN206244631U (en) * | 2016-11-28 | 2017-06-13 | 浙江科力尔环保设备有限公司 | A kind of sludge condensation and dehydrating integrated machine |
| CN107285585A (en) * | 2017-08-25 | 2017-10-24 | 深圳市花蘑菇网络科技有限公司 | A kind of sludge treatment equipment |
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