CN215439979U - Improved organic wastewater circulating treatment system - Google Patents
Improved organic wastewater circulating treatment system Download PDFInfo
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- CN215439979U CN215439979U CN202121745077.3U CN202121745077U CN215439979U CN 215439979 U CN215439979 U CN 215439979U CN 202121745077 U CN202121745077 U CN 202121745077U CN 215439979 U CN215439979 U CN 215439979U
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Abstract
The utility model relates to an improved organic wastewater circulating treatment system which comprises an overflow tank, a dissolved air floatation device, a single-valve sand filter, a flushing water tank, a central transmission mud scraping device, a stacked screw type dehydrator and a PAM (polyacrylamide) dosing device, wherein the overflow tank is connected with the dissolved air floatation device through a wastewater lifting pump, the dissolved air floatation device is connected with the single-valve sand filter through an air floatation water outlet lifting pump, the single-valve sand filter is connected with the central transmission mud scraping device, and the PAM dosing device is respectively connected with the dissolved air floatation device and the stacked screw type dehydrator. The side wall of the interior of the sewage treatment tank is cleaned, the overall treatment effect is good, and the operation is stable and reliable.
Description
Technical Field
The utility model relates to a wastewater treatment system, in particular to an organic wastewater treatment system.
Background
With the advance of industrial structure adjustment and 'forest paper integration' engineering construction, wood pulping in China is developed rapidly. According to statistics of relevant departments, the capacity of self-made wood pulp in China in 2010 reaches more than 700 million, and the capacity of the wood pulp is further improved along with implementation of a batch of integrated forest paper projects which are successively newly built and expanded. The pulping and papermaking industry is one of industries with serious water pollution, wood pulping is an important component of the pulping and papermaking industry, the consumption of wood chips in the pulping industry in China is about 1200 ten thousand at present, wood chip washing is a necessary process in the pulping process, and washing wastewater is one of pollution sources discharged by wastewater. The wood chip washing water amount in the wood pulping process depends on the concentration of wood chips in a washing machine (generally 4-6%), the corresponding water consumption is about 24-14 m/t wood chips, the CODCr of waste water reaches 1200-2500 mg/L, the BOD5 reaches 350-600 mg/L, the SS reaches 1000-1500 mg/L, the pH value is 6.2-6.5, and the chroma is 500-800 times. The conclusion of the system study is as follows: 1) the water quantity of the wood chip washing water is relatively large, but the concentration of pollutants in the wood chip washing water is not very high, the water quality requirement of the wood chip washing water in the production process is not too high, and impurities such as silt, bark, fine wood chips and the like in the waste water need to be removed, so that the wood chip washing water can be used for the wood chip washing process again; meanwhile, the dissolubility substance in the washing water is not too high, the wood chip washing water can be recycled, but the dissolubility substance in the wood chip washing water needs to be removed after the wood chip washing water is recycled to a certain degree, otherwise, the washing efficiency of the wood chips is influenced. 2) The waste water mainly contains suspended matters with small specific gravity, suspended matters with large specific gravity and soluble substances. The small-specific-gravity suspended substance mainly comprises bark, wood chips and fibers, the large-specific-gravity suspended substance mainly comprises silt and dust, and the soluble substance mainly comprises clay particles, fine wood chips, wood dust and hemicellulose which are hydrolyzed to generate saccharides and acid substances and substances such as tannin and the like dissolved out from the bark. If the substances are not classified and separated, the subsequent effective utilization and treatment are influenced, and potential secondary pollution problems exist. 3) The traditional water treatment technology is adopted to realize standard discharge and has difficulty. The CODCr is higher and the BOD5/CODCr is lower, belonging to high-concentration and difficult-to-biodegrade wastewater, and the wastewater has complex components and stronger biotoxicity; in addition, the water quality is acidic, and the pH value of the wastewater is generally regulated by mixing the wastewater with the alkaline pulping middle section wastewater in a homogenizing tank at the front end of the wastewater treatment process so as to be beneficial to subsequent biological treatment. The emission standard is difficult to reach by the common secondary biological treatment.
At present, the research on the wood chip washing wastewater is relatively less, especially the research on the treatment technology in the paper making industry is less, and the wood chip washing water and the pulping and paper making wastewater are mixed for biochemical treatment. However, the problem that the wood chip washing water interferes the water treatment system, so that the normal water treatment effect is influenced, and simultaneously, a certain amount of biochemical sludge is discharged after biochemical treatment. In addition, traditional mud scraper in use discovers that the mud scraper can only scrape mud from the bottom of equipment such as a sedimentation tank and a wastewater treatment tank in the mud scraping process, and cannot clean the side wall, so that the use practicability is poor.
Disclosure of Invention
The purpose of the utility model is as follows: the utility model aims to overcome the defects in the prior art and provides an improved organic wastewater circulating treatment system which has the advantages of clean inner side wall of a wastewater treatment tank, good overall treatment effect, and stable and reliable operation.
The technical scheme is as follows: in order to solve the technical problems, the utility model provides an improved organic wastewater circulating treatment system which comprises an overflow trough, a dissolved air flotation device, a single-valve sand filter, a flushing water tank, a central transmission mud scraping device, a screw-stacking type dehydrator and a PAM (polyacrylamide) dosing device, wherein the overflow trough is connected with the dissolved air flotation device through a wastewater lifting pump, the dissolved air flotation device is connected with the single-valve sand filter through an air-floating water outlet lifting pump, the single-valve sand filter is connected with the central transmission mud scraping device, the PAM dosing device is respectively connected with the dissolved air flotation device and the screw-stacking type dehydrator, the upper part of the single-valve sand filter is connected with the flushing water tank, one side of the flushing water tank is connected with the overflow trough, one end of the central transmission mud scraping device is connected with the dissolved air flotation device through a supernatant lifting pump, the central transmission mud scraping device comprises a sewage treatment tank and a sludge transfer tank, the sewage treatment box is internally provided with a cavity, the upper end of the sludge transfer box is communicated with the middle part of the lower end of the sewage treatment box, the lower part of one side of the sludge transfer box is provided with a slag outlet, the slag outlet is provided with a spiral conveying mechanism, the lower part of one end of the spiral conveying mechanism is provided with a sludge discharge pipe, the lower end of a scraping motor is connected with the upper end of the sewage treatment box, the scraping motor is connected with a scraping rotating shaft through a speed reducing mechanism, the lower ends of a plurality of groups of bearing seat supports are connected with the lower end of the inside of the sludge transfer box, the lower ends of the bearing seat supports are connected with the upper end of the bearing seat support, the lower end of the scraping rotating shaft is rotatably connected with the upper end of the bearing seat, the scraping rotating shaft is rotatably arranged inside the sewage treatment box, two groups of box bottom scraping rods are symmetrically arranged at the lower sides of the left end and the right end of the scraping rotating shaft, a plurality of box bottom scraping rods are fixedly arranged at the lower ends of the scraping box bottom, and two groups of auxiliary connecting rods are symmetrically arranged at the upper sides of the left end and the left end of the scraping shaft, two groups of side scrapers are respectively and fixedly installed at the bottom of the equidirectional box scraping rod and the outer end of the auxiliary connecting rod, and the outer ends of the side scrapers are tightly attached to the inner side end of the sewage treatment box.
Furthermore, a self-cleaning slag removal device is connected to one side of the overflow groove, the bottom of the dissolved air floatation device is connected with the self-cleaning slag removal device through a slag discharge pump, a dissolved air tank and an air compressor are connected to one side of the dissolved air floatation device, and the air compressor controls the dissolved air tank to add air to the dissolved air floatation device.
Furthermore, a reinforcing rib is arranged between the scraping rotating shaft and the box bottom scraping rod.
Has the advantages that: compared with the prior art, the utility model has the following remarkable advantages: the utility model has reasonable integral structure arrangement, classifies and removes large-specific-gravity suspended matters, small-specific-gravity suspended matters and soluble substances in wood processing wastewater, maintains the balance of a digestion system in the washing process, ensures the quality stability of wood chips after washing, effectively reduces the fresh water consumption of wood processing and reduces the discharge amount of wood chip washing wastewater by recycling the wastewater treatment, realizes the classification reduction and the high-efficiency utilization of wastes from the source, adopts an improved central transmission mud scraping device, starts a scraping motor, drives a scraping rotating shaft to rotate through a speed reducing mechanism at the output end of the scraping motor, drives two groups of box bottom scraping rods to rotate through the rotating scraping rotating shaft, then drives the box bottom scraping rods at the lower end to rotate through the rotating box bottom scraping rods, completely scrapes the sludge at the lower end inside the sewage treatment box through the rotating box bottom scraping rods, and then the box bottom scraping rods are matched with the auxiliary connecting rods, drive two sets of side scrapers and rotate, later strike off the mud of the inside lateral wall adhesion of sewage treatment incasement portion through pivoted side scraper clean, then mud drops to mud transfer incasement portion, discharges through mud transfer case, and this system operates steadily reliably, accords with the in-service use requirement.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of the central transmission mud scraping device in the utility model.
Detailed Description
The utility model is further described below with reference to the figures and examples.
As shown in fig. 1 and 2, the improved organic wastewater recycling treatment system of the present invention comprises an overflow tank 1, a dissolved air flotation device 2, a single-valve sand filter 3, a flushing water tank 4, a central transmission mud scraping device 5, a stacked screw dehydrator 6, and a PAM dosing device 7, wherein the overflow tank 1 is connected with the dissolved air flotation device 2 through a wastewater lift pump, the dissolved air flotation device 2 is connected with the single-valve sand filter 3 through an air-float water lift pump, the single-valve sand filter 3 is connected with the central transmission mud scraping device 5, the PAM dosing device 7 is respectively connected with the dissolved air flotation device 2 and the stacked screw dehydrator 6, the upper portion of the single-valve sand filter 3 is connected with the flushing water tank 4, one side of the flushing water tank 4 is connected with the overflow tank 1, one end of the central transmission mud scraping device 5 is connected with the dissolved air flotation device 2 through a supernatant lift pump, the central transmission mud scraping device 5 comprises a sewage treatment tank 8 and a sludge transfer tank 9, a cavity is arranged in the sewage treatment box 8, the upper end of the sludge transfer box 9 is communicated with the middle part of the lower end of the sewage treatment box 8, a slag hole is arranged at the lower part of one side of the sludge transfer box 9, a spiral conveying mechanism 10 is arranged at the slag hole, a sludge discharge pipe 11 is arranged at the lower part of one end of the spiral conveying mechanism 10, the lower end of a scraping motor 12 is connected with the upper end of the sewage treatment box 8, the scraping motor 12 is connected with a scraping rotating shaft 14 through a speed reducing mechanism 13, the lower ends of a plurality of groups of bearing seat supports 15 are connected with the lower end of the inside of the sludge transfer box 9, the lower end of a bearing seat 16 is connected with the upper end of the bearing seat support 15, the lower end of the scraping rotating shaft 14 is rotatably connected with the upper end of the bearing seat 16, the scraping rotating shaft 14 is rotatably arranged in the sewage treatment box 8, two groups of box bottom scraping rods 17 are symmetrically arranged at the lower sides of the left end and the right end of the scraping rotating shaft 14, and a reinforcing rib 24 is arranged between the scraping shaft 14 and the box bottom scraping rods 17, the lower end of a box bottom scraping rod 17 is fixedly provided with a plurality of groups of box bottom scraping blades 18, two groups of auxiliary connecting rods 19 are symmetrically arranged on the upper sides of the left end and the right end of a scraping rotating shaft 14, two groups of side scraping plates 20 are respectively and fixedly arranged at the outer ends of the box bottom scraping rod 17 and the auxiliary connecting rods 19 in the same direction, the outer ends of the side scraping plates 20 are tightly attached to the inner side end of a sewage treatment box 8, one side of an overflow groove 1 is connected with a self-cleaning type deslagging device 21, the bottom of a dissolved air floatation device 2 is connected with the self-cleaning type deslagging device 21 through a slag discharge pump, one side of the dissolved air floatation device 2 is connected with a dissolved air tank 22 and an air compressor 23, and the air compressor 23 controls the dissolved air tank 22 to add air to the dissolved air floatation device 2. The utility model has reasonable integral structure arrangement, classifies and removes large-specific-gravity suspended matters, small-specific-gravity suspended matters and soluble substances in wood processing wastewater, maintains the balance of a digestion system in the washing process, ensures the quality stability of wood chips after washing, effectively reduces the fresh water consumption of wood processing and reduces the discharge amount of wood chip washing wastewater by recycling the wastewater treatment, realizes the classification reduction and the high-efficiency utilization of wastes from the source, adopts an improved central transmission mud scraping device, starts a scraping motor, drives a scraping rotating shaft to rotate through a speed reducing mechanism at the output end of the scraping motor, drives two groups of box bottom scraping rods to rotate through the rotating scraping rotating shaft, then drives the box bottom scraping rods at the lower end to rotate through the rotating box bottom scraping rods, completely scrapes the sludge at the lower end inside the sewage treatment box through the rotating box bottom scraping rods, and then the box bottom scraping rods are matched with the auxiliary connecting rods, drive two sets of side scrapers and rotate, later strike off the mud of the inside lateral wall adhesion of sewage treatment incasement portion through pivoted side scraper clean, then mud drops to mud transfer incasement portion, discharges through mud transfer case, and this system operates steadily reliably, accords with the in-service use requirement.
The present invention provides a thought and a method, and a method and a way for implementing the technical scheme are many, the above is only a preferred embodiment of the present invention, it should be noted that, for a person skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the present invention, and the improvements and modifications should be regarded as the protection scope of the present invention, and each component not explicitly described in the embodiment can be implemented by the prior art.
Claims (3)
1. An improved organic wastewater circulating treatment system is characterized in that: it comprises an overflow trough (1), a dissolved air floatation device (2), a single valve sand filter (3), a flushing water tank (4), a central transmission mud scraping device (5), a stacked screw type dewatering machine (6) and a PAM dosing device (7), wherein the overflow trough (1) is connected with the dissolved air floatation device (2) through a wastewater lift pump, the dissolved air floatation device (2) is connected with the single valve sand filter (3) through an air floatation water outlet lift pump, the single valve sand filter (3) is connected with the central transmission mud scraping device (5), the PAM dosing device (7) is respectively connected with the dissolved air floatation device (2) and the stacked screw type dewatering machine (6), the flushing water tank (4) is connected with the upper part of the single valve sand filter (3), the overflow trough (1) is connected with one side of the flushing water tank (4), one end of the central transmission mud scraping device (5) is connected with the dissolved air floatation device (2) through a supernatant lifting pump, the central transmission mud scraping device (5) comprises a sewage treatment box (8) and a sludge transfer box (9), wherein a cavity is arranged inside the sewage treatment box (8), the upper end of the sludge transfer box (9) is communicated with the middle part of the lower end of the sewage treatment box (8), a slag outlet is arranged on the lower part of one side of the sludge transfer box (9), a spiral conveying mechanism (10) is arranged at the slag outlet, a mud discharge pipe (11) is arranged on the lower part of one end of the spiral conveying mechanism (10), the lower end of a scraping motor (12) is connected with the upper end of the sewage treatment box (8), the scraping motor (12) is connected with a scraping rotating shaft (14) through a speed reducing mechanism (13), the lower ends of a plurality of groups of bearing seat supports (15) are connected with the inner lower end of the sludge transfer box (9), the lower ends of bearing seats (16) are connected with the upper end of the bearing seat supports (15), the lower end of the scraping rotating shaft (14) is rotatably connected with the upper end of the bearing seats (16), and scrape that pivot (14) rotatable setting is inside sewage treatment case (8), two sets of bottom of the case scrape pole (17) symmetry and install and scrape pivot (14) left and right sides both ends downside, bottom of the case scrape pole (17) lower extreme fixed mounting have multiunit bottom of the case doctor-bar (18), two sets of auxiliary connecting rod (19) symmetry are installed and are scraped pivot (14) left and right sides both ends upside, the equidirectional bottom of the case scrape pole (17) and auxiliary connecting rod (19) outer end fixed mounting respectively have two sets of side scrapers (20), and side scraper (20) outer end pastes tightly with the inside side of sewage treatment case (8).
2. The improved organic wastewater recycling treatment system according to claim 1, characterized in that: the automatic gas filling device is characterized in that a self-cleaning type deslagging device (21) is connected to one side of the overflow groove (1), the bottom of the dissolved gas floatation device (2) is connected with the self-cleaning type deslagging device (21) through a deslagging pump, a dissolved gas tank (22) and an air compressor (23) are connected to one side of the dissolved gas floatation device (2), and the air compressor (23) controls the dissolved gas tank (22) to add gas to the dissolved gas floatation device (2).
3. The improved organic wastewater recycling treatment system according to claim 1, characterized in that: and a reinforcing rib (24) is arranged between the scraping rotating shaft (14) and the box bottom scraping rod (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745077.3U CN215439979U (en) | 2021-07-29 | 2021-07-29 | Improved organic wastewater circulating treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121745077.3U CN215439979U (en) | 2021-07-29 | 2021-07-29 | Improved organic wastewater circulating treatment system |
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| Publication Number | Publication Date |
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| CN215439979U true CN215439979U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121745077.3U Active CN215439979U (en) | 2021-07-29 | 2021-07-29 | Improved organic wastewater circulating treatment system |
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| CN (1) | CN215439979U (en) |
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2021
- 2021-07-29 CN CN202121745077.3U patent/CN215439979U/en active Active
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