CN109607967B - Textile wastewater treatment system - Google Patents

Textile wastewater treatment system Download PDF

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Publication number
CN109607967B
CN109607967B CN201910027880.4A CN201910027880A CN109607967B CN 109607967 B CN109607967 B CN 109607967B CN 201910027880 A CN201910027880 A CN 201910027880A CN 109607967 B CN109607967 B CN 109607967B
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flocculation
stirring
tank
hydraulic
stirring chamber
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CN109607967A (en
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金娜
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叶江波
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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
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/5281Installations for water purification using chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/30Nature of the water, waste water, sewage or sludge to be treated from the textile industry
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage

Abstract

The invention relates to the technical field of spinning. Aim at provides a weaving effluent disposal system that purifying effect is good. The technical scheme adopted by the invention is as follows: a textile wastewater treatment system comprises a flocculation precipitation device, a biological contact oxidation device and an activated carbon adsorption device which are sequentially communicated and arranged in the sequence of wastewater treatment; the flocculation and precipitation device comprises a flocculation and precipitation tank, wherein the flocculation and precipitation tank consists of a cylindrical stirring chamber and a hydraulic flocculation tank which is arranged on one side of the stirring chamber and is provided with an opening at the top; the lower part of the stirring chamber, which is close to one side of the hydraulic flocculation tank, is provided with an overflowing hole and is communicated with the inside of the hydraulic flocculation tank through the overflowing hole; the invention integrates flocculation precipitation treatment, biodegradation treatment and activated carbon adsorption treatment, and has excellent treatment effect on textile wastewater. And in the process of flocculation and precipitation treatment, mechanical stirring and hydraulic flocculation are combined, so that the stability of the whole flocculation process is ensured, and the wastewater treatment effect is further improved.

Description

Textile wastewater treatment system
Technical Field
The invention relates to the technical field of spinning, in particular to a spinning wastewater treatment system.
Background
The textile printing and dyeing wastewater has complex components, often contains a plurality of dyes, has high chroma, strong toxicity and poor degradability, and is one of the industrial wastewater which is difficult to treat. At present, the main methods for treating textile printing and dyeing wastewater in the prior art are as follows: physical and chemical treatment methods. The physical treatment method is a method for treating wastewater by physical methods such as flocculation, adsorption and the like, and common devices comprise: coagulation devices, activated carbon adsorption devices, and the like. The biochemical treatment method is to utilize aerobic microorganisms to carry out oxidative degradation on organic matters in wastewater, and the conventional devices comprise: the microorganism contacts the oxidation pond. Among the two treatment modes, the physical treatment method has a better treatment effect on water-insoluble dyes, textile fiber scraps and the like in the wastewater, and the biochemical treatment method has a better treatment effect on soluble organic matters in the wastewater, so that the two modes are often mixed and applied in the prior art to obtain a better wastewater treatment effect. However, long-term practice proves that the existing coagulation device, the active carbon adsorption device, the microorganism contact oxidation pond and the like have certain defects and need to be improved.
Disclosure of Invention
The invention aims to provide a textile wastewater treatment system with a good purification effect.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a textile wastewater treatment system comprises a flocculation precipitation device, a biological contact oxidation device and an activated carbon adsorption device which are sequentially communicated and arranged in the sequence of wastewater treatment;
the flocculation and precipitation device comprises a flocculation and precipitation tank, wherein the flocculation and precipitation tank consists of a cylindrical stirring chamber and a hydraulic flocculation tank which is arranged on one side of the stirring chamber and is provided with an opening at the top; the lower part of the stirring chamber, which is close to one side of the hydraulic flocculation tank, is provided with an overflowing hole and is communicated with the inside of the hydraulic flocculation tank through the overflowing hole; a stirring mechanism is arranged in the stirring chamber, and a flocculation water inlet pipe and a dosing pipe are arranged at the top of the stirring chamber; a plurality of vertical flocculation partition plates are arranged in the hydraulic flocculation tank along the length direction of the hydraulic flocculation tank, the flocculation partition plates extend along the front and back direction of the hydraulic flocculation tank, one of the front and back sides of each flocculation partition plate is fixedly connected with the hydraulic flocculation tank, an overflowing notch is formed between the other side of each flocculation partition plate and the hydraulic flocculation tank, and overflowing notches corresponding to two adjacent flocculation partition plates are staggered; the flocculation partition plate divides the interior of the hydraulic flocculation tank into a plurality of galleries which are parallel to each other, and two adjacent galleries are communicated with each other through a flow passage gap; and a flocculation water outlet pipe is arranged at the upper part of the tank wall of one side of the hydraulic flocculation tank, which is far away from the stirring chamber, and is communicated with the biological contact oxidation device through the flocculation water outlet pipe.
Preferably, the bottom of each gallery and the bottom of the stirring chamber are provided with a flocculation sludge discharge pipe which is communicated with a sludge discharge main pipe; each flocculation sludge discharge pipe is provided with a sludge discharge electromagnetic valve.
Preferably, a plurality of vertical sieve plates are arranged at the bottom in each gallery along the length direction of the gallery, and the sieve plates divide the gallery into a plurality of sedimentation partitions; the bottom of each settling subarea of the corridor is provided with a flocculated sludge discharge pipe.
Preferably, a vertical flow-around column is arranged in each settling partition of the gallery.
Preferably, the bypass flow column is gradually reduced from bottom to top.
Preferably, the circumferential surface of the streaming column is provided with spiral flow guide teeth extending along the length direction of the streaming column.
Preferably, except one gallery close to the stirring chamber in the hydraulic flocculation tank, the streaming columns in two adjacent sedimentation subareas in the other galleries are staggered with each other.
Preferably, the stirring mechanism comprises a stirring motor fixedly arranged at the center of the top of the stirring chamber, and the output end of the stirring motor is connected with the upper end of the stirring shaft; the lower end of the stirring shaft vertically extends into the stirring chamber, and the lower part of the stirring shaft is provided with spiral stirring teeth; and a plurality of vertical stirring through holes are uniformly formed in the spiral stirring teeth.
Preferably, a section of the stirring shaft above the spiral stirring teeth is also provided with a refining conical disc, and the refining conical disc is coaxially sleeved outside the stirring shaft and is fixedly connected with the stirring shaft; the material refining conical disc is provided with a plurality of strip-shaped dispersing through holes which are uniformly distributed in an annular shape around the stirring shaft.
Preferably, the inner side wall of the stirring chamber is further provided with a turbulence strip extending along the circumferential direction of the stirring chamber, and the turbulence strip is wavy.
The beneficial effects of the invention are concentrated and expressed as follows: the flocculation precipitation treatment, the biodegradation treatment and the activated carbon adsorption treatment are integrated, and the treatment effect on the textile wastewater is excellent. And in the process of flocculation and precipitation treatment, mechanical stirring and hydraulic flocculation are combined, so that the stability of the whole flocculation process is ensured, and the wastewater treatment effect is further improved. Specifically, in the primary use process of the flocculation and sedimentation collecting device, a certain amount of clear water is added into the flocculation and sedimentation tank to enable the inside of the flocculation and sedimentation tank to reach the rated starting water level; textile wastewater and flocculation medicament get into the agitator chamber through flocculating the inlet tube respectively with adding the pencil, open agitating unit and carry out high-speed stirring to waste water and medicament, can impel the quick formation of flocculating the nuclear. After the flocculation nuclei are formed, the mixture enters the hydraulic flocculation tank through the overflowing hole, liquid is formed into larger flocculating constituents and is precipitated in the flowing process of the circuitous and tortuous galleries, and supernatant is led into a subsequent biological contact oxidation device and an active carbon adsorption device through the flocculation water outlet pipe to be sequentially subjected to biodegradation treatment and adsorption treatment. Compared with the traditional device, the flocculation sedimentation device of the invention can rapidly cause the early stage of flocculation through stirring, improve the flocculation speed, and prevent large-particle flocculants from being scattered through stirring by combining with hydraulic flocculation, and the flocculation device has large flocculated particles and good sedimentation effect, and can realize continuous treatment of wastewater with large wastewater treatment capacity. Through the preferred bypass flow post that sets up, make liquid produce the vortex at the in-process that flows, improved the collision probability of flocculating constituent and impurity, further improved the flocculation effect. In the process of hydraulic flocculation, the vortex should be larger than the formed flocculating constituent to avoid crushing the formed flocculating constituent, but the too large vortex can excessively lose the flowing hydraulic power and reduce the flocculation speed. For this reason, the present invention preferably adopts a large-bottom and small-top arrangement, so that the bottom layer and the upper layer generate vortex with proper size, which is exactly matched with the distribution relationship of large granular floccules on the bottom layer and small granular floccules on the upper layer. Through the arrangement, the further flocculation of the flocculating constituent is not influenced, and unnecessary hydraulic loss can be prevented.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a flocculation precipitation device;
FIG. 3 is a top view of the structure shown in FIG. 2;
FIG. 4 is a schematic structural view of a bypass flow column;
FIG. 5 is a schematic structural view of a refining cone disc;
FIG. 6 is a schematic view of a preferred turbulation bar configuration;
FIG. 7 is a schematic view of the structure of a biological contact oxidation apparatus;
FIG. 8 is an enlarged view of portion A of FIG. 7;
FIG. 9 is a schematic structural view of an activated carbon adsorption unit;
fig. 10 is an enlarged view of a portion B in fig. 9.
Detailed Description
The textile wastewater treatment system shown in the figures 1-10 comprises a flocculation precipitation device 1, a biological contact oxidation device 2 and an activated carbon adsorption device 3 which are sequentially communicated and arranged in the sequence of wastewater treatment. The flocculation precipitation device 1 is used for performing flocculation precipitation treatment on the wastewater after adding a flocculation reagent into the wastewater, so that suspended matters, impurities and the like in the wastewater are basically removed. The flocculating agent comprises the following components: aluminum sulfate, aluminum chloride, ferric sulfate, ferric chloride, polyaluminum sulfate, polyferric chloride, polyferric sulfate and the like, and workers can reasonably select the type of the textile wastewater. The biological contact oxidation device 2 leads aerobic microorganisms to be in contact with the water body, thereby degrading residual organic matters in the water body. The activated carbon adsorption device 3 utilizes the adsorption principle of activated carbon to further remove harmful substances in the water body. The flocculation precipitation device 1, the biological contact oxidation device 2, the activated carbon adsorption device 3 and the like can adopt conventional equipment sold in the market, and the three devices are combined, so that the device has the advantages of three treatment modes of flocculation precipitation treatment, microbial degradation treatment and activated carbon adsorption treatment, and has a good purification effect on wastewater.
However, the flocculation precipitation apparatus 1, the biological contact oxidation apparatus 2 and the activated carbon adsorption apparatus 3 according to the present invention may be further modified individually or simultaneously.
In the case of the flocculation apparatus 1, the present invention is more preferably such that, as shown in fig. 2 and 3, the flocculation apparatus 1 comprises a flocculation tank consisting of a cylindrical stirring chamber 4 and a hydraulic flocculation vat 5 with an open top disposed on one side of the stirring chamber 4, wherein, as shown in the figure, the stirring chamber 4 is located on the left side and the hydraulic flocculation vat 5 is located on the right side, and the reverse is true. The lower part of the stirring chamber 4 close to one side of the hydraulic flocculation tank 5 is provided with an overflowing hole 6 which is communicated with the inside of the hydraulic flocculation tank 5 through the overflowing hole 6. The water mixed and primarily flocculated in the mixing chamber 4 can flow into the hydraulic flocculation tank 5 through the overflowing hole 6.
4 inside rabbling mechanisms that are provided with of teeter chamber, the effect of rabbling mechanism lies in stirring textile wastewater and flocculating agent to the flocculating nucleus is formed fast. The stirring structure has more specific structures, such as: the stirring mechanism can adopt a rod type stirring paddle, a fan blade stirring paddle and the like as long as the effect of mixing the flocculating agent and the wastewater can be achieved. However, in order to improve the mixing effect, it is preferable that the stirring mechanism includes a stirring motor fixedly disposed at the top center of the stirring chamber 4, and an output end of the stirring motor is connected to an upper end of the stirring shaft 20. The lower end of the stirring shaft 20 vertically extends into the stirring chamber 4, and the lower part of the stirring shaft 20 is provided with spiral stirring teeth 21. Spiral stirring tooth 21 is last evenly to be provided with a plurality of vertical stirring through-holes 22, and spiral stirring tooth 21 and stirring through-hole 22 can promote the vertical plug flow of stirring in-process, make the mixture degree of consistency better. In addition, in order to further improve the stirring uniformity, a turbulence strip 25 extending along the circumferential direction of the stirring chamber 4 is further disposed on the inner side wall of the stirring chamber 4, the turbulence strip 25 can further disturb the stirring in the stirring chamber 4, and as shown in fig. 1, the turbulence strip 25 is in a circular ring shape surrounding the inner wall of the stirring chamber 4. But more preferably, as shown in fig. 6, the turbulence strips 25 are wavy, so that the turbulence effect is better.
And a flocculation water inlet pipe 7 and a dosing pipe 8 are arranged at the top of the stirring chamber 4. As the adding port of the textile wastewater and the flocculating agent, in order to further improve the uniformity of the feeding, a material homogenizing conical disc 23 is further arranged outside one section of the stirring shaft 20 above the spiral stirring teeth 21, and the material homogenizing conical disc 23 is coaxially sleeved outside the stirring shaft 20 and is fixedly connected with the stirring shaft 20. The material homogenizing conical disc 23 is provided with a plurality of strip-shaped dispersing through holes 24, and the dispersing through holes 24 are uniformly distributed around the stirring shaft 20 in an annular shape. In the feeding process, the stirring shaft 20 continuously drives the refining conical disc 23 to rotate, the wastewater and the flocculating agent fall on the refining conical disc 23, and are uniformly dispersed into the stirring chamber 4 after being preliminarily mixed by the refining conical disc 23.
As shown in fig. 3, a plurality of vertical flocculation baffles 9 are arranged in the hydraulic flocculation tank 5 along the length direction of the hydraulic flocculation tank 5, the flocculation baffles 9 extend along the front and back direction of the hydraulic flocculation tank 5, one of the front and back sides of each flocculation baffle 9 is fixedly connected with the hydraulic flocculation tank 5, an overflow notch 10 is formed between the other side of each flocculation baffle and the hydraulic flocculation tank 5, and the overflow notches 10 corresponding to two adjacent flocculation baffles 9 are staggered with each other, so that a circuitous flow channel is formed. The flocculation baffle 9 divides the inside of the hydraulic flocculation tank 5 into a plurality of galleries 11 which are parallel to each other, and the two adjacent galleries 11 are communicated with each other through the overflow notch 10, namely, a flow passage in the hydraulic flocculation tank 5 is formed by connecting the plurality of galleries 11 with each other, and the connecting position of the galleries 11 is at the overflow notch 10. And a flocculation water outlet pipe 12 is arranged on the upper part of the tank wall of the hydraulic flocculation tank 5 at one side far away from the stirring chamber 4 and is communicated with the biological contact oxidation device 2 through the flocculation water outlet pipe 12.
In the process of flocculation and precipitation collection treatment, the invention combines mechanical stirring and hydraulic flocculation, ensures the stability of the whole flocculation process and further improves the wastewater treatment effect. Specifically, in the primary use process of the flocculation and sedimentation collecting device 1, a certain amount of clear water is added into a flocculation and sedimentation tank to enable the inside of the flocculation and sedimentation tank to reach a rated starting water level; textile wastewater and flocculation medicament are respectively through flocculating inlet tube 7 and adding in 8 entering teeter chambers 4 of pencil, open agitating unit and carry out high-speed stirring to waste water and medicament, can impel the quick formation of flocculating nucleus. After the flocculation nuclei are formed, the mixture enters the hydraulic flocculation tank 5 through the overflowing hole 6, liquid is formed into larger flocculating constituents and is precipitated in the flowing process of the circuitous and tortuous gallery 11, and supernatant is led into the subsequent biological contact oxidation device 2 and the active carbon adsorption device 3 through the flocculation water outlet pipe 12 to be sequentially subjected to biodegradation treatment and adsorption treatment. Compared with the traditional device, the flocculation precipitation device 1 of the invention can rapidly nucleate in the early stage of flocculation by stirring, improve the flocculation speed, and prevent large-particle flocculants from being scattered by stirring by combining with hydraulic flocculation, and the flocculation device has large particles and good precipitation effect, can realize continuous treatment of wastewater and has large wastewater treatment capacity.
In order to discharge sludge settled at the bottom of the flocculation settling tank, the bottom of each gallery 11 and the bottom of the stirring chamber 4 are provided with flocculation sludge discharge pipes 13, and the flocculation sludge discharge pipes 13 are communicated with a sludge discharge main pipe 14. Each flocculation sludge discharge pipe 13 is provided with a sludge discharge electromagnetic valve 15, the sludge discharge electromagnetic valves 15 are switched on and off at regular intervals, sludge is discharged in sequence at regular intervals, and the discharged sludge can be guided into a sludge dewatering machine for subsequent treatment. In order to ensure the smoothness of sludge discharge, a plurality of vertical sieve plates 16 are arranged at the bottom in each gallery 11 along the length direction of the gallery 11, and the sieve plates 16 divide the gallery 11 into a plurality of sedimentation partitions 17. The bottom of each settling subarea 17 of the corridor 11 is provided with a flocculated sludge discharge pipe 13.
On the basis, in order to further improve the flocculation effect in the hydraulic flocculation tank 5, a vertical flow-around column 18 is arranged in each settling subarea 17 of the gallery 11. Through the preferably arranged circumfluence column 18, the liquid generates vortex in the flowing process, the collision probability of the flocculating constituent and impurities is improved, and the flocculation effect is further improved. In the process of hydraulic flocculation, the vortex should be larger than the formed flocculating constituent to avoid crushing the formed flocculating constituent, but the too large vortex can excessively lose the flowing hydraulic power and reduce the flocculation speed. For this purpose, the bypass flow column of the present invention is preferably arranged to be larger at the bottom and smaller at the top, that is, the bypass flow column 18 is gradually smaller from the bottom to the top as shown in fig. 4. So that the liquid in the lower layer and the liquid in the upper layer can generate vortex with proper size after flowing through the bypass flow column 18, the vortex in the upper layer is smaller, and the vortex in the lower layer is larger. The distribution relationship is exactly matched with the distribution relationship that large granular flocculating constituents are on the bottom layer and small granular flocculating constituents are on the upper layer. Through the arrangement, the invention can not influence the further flocculation of the flocculating constituent, but also prevent unnecessary hydraulic loss and ensure the flocculation speed. Furthermore, in order to improve the ability of the bypass column 18 to excite the vortex, a spiral guide vane 19 extending along the length direction of the bypass column 18 is arranged on the peripheral surface of the bypass column 18. In addition, except for one gallery 11 close to the stirring chamber 4 in the hydraulic flocculation tank 5, the flow surrounding columns 18 in the two adjacent sedimentation subareas 17 in the other galleries 11 are mutually staggered, and the mutually staggered flow surrounding columns 18 can ensure that liquid generates vortex at each position in the whole flow section, so that flocculation at each position is more balanced.
In view of the biological contact oxidation apparatus 2, the present invention is more preferably such that, as shown in fig. 7 and 8, the biological contact oxidation apparatus 2 includes a biological treatment tank 26, and a biological treatment inlet pipe 27 is provided at an upper portion of one side of the biological treatment tank 26 and communicates with the flocculation settling apparatus 1 through the biological treatment inlet pipe 27. The lower part of the other side of the biological treatment tank 26 is provided with a biological treatment water outlet pipe 28, and is communicated with the activated carbon adsorption device 3 through the biological treatment water outlet pipe 28. A plurality of horizontal biological culture boxes 29 with top openings are uniformly arranged in the biological treatment box 26 along the vertical direction, as shown in fig. 7, the number of the biological culture boxes 29 is three, and actually, the number of the biological culture boxes can be more. One side of the biological culture box 29 is fixedly connected with the inner wall of the biological treatment box 26, a water drop gap 30 is formed between the other side of the biological culture box 29 and the biological treatment box 26, the water body on the upper layer falls into the lower layer from the water drop gap 30, the water drop gaps 30 corresponding to two adjacent biological culture boxes 29 are mutually staggered, and a roundabout flow path is formed on the whole. The biological culture box 29 is filled with a biological attachment medium 31, microorganisms are distributed on the biological attachment medium 31, the biological attachment medium 31 is used for attachment of the microorganisms, the biological attachment medium 31 should have a large attachment surface area, and the common biological attachment medium 31 can be stainless steel wire coils, plastic fiber bundles and the like.
In the process of biodegradation treatment, the flocculated and precipitated water enters a biological treatment tank 26 through a biological treatment water inlet pipe 27, sequentially flows through biological culture boxes 29 and finally enters an activated carbon adsorption device 3 through a biological treatment water outlet pipe 28; during the process of flowing through biological growth box 29, the water can be sufficiently contacted with the microorganisms distributed on biological attachment medium 31, so as to remove the harmful components contained therein. In the process that the water body falls from the upper layer biological culture box 29 to the lower layer biological culture box 29 in the biological contact oxidation device 2, the oxygen content in the water body can be greatly improved, so that the purification effect of aerobic microorganisms on the water body is better. In addition, in order to further ensure sufficient oxygen content in the water, aerobic microorganisms are provided with high activity. As shown in fig. 8, a splash plate 32 is disposed at the lower part of the side wall of the biological culture box 29 corresponding to the drop notch 30, and a plurality of splash ribs 33 with semicircular cross sections are disposed on the splash plate 32. The splash plate 32 and the splash convex edge 33 which are preferably arranged can fully splash into splash in the falling process of the water body, so that the oxygen content is further ensured, and the organic matters in the wastewater can be fully purified.
As shown in fig. 9 and 10, the activated carbon adsorption device 3 of the present invention includes an adsorption cylinder 34 arranged vertically, and is in the shape of an elongated cylinder. An adsorption water inlet pipe 35 is arranged at the center of the bottom of the adsorption cylinder 34, the adsorption water inlet pipe 35 is communicated with the biological contact oxidation device 2 through a water conveying pipeline 36, a water pump 37 and a check valve 38 are arranged on the water conveying pipeline 36, the water pump 37 is used for pumping water in the biological contact oxidation device 2 into the adsorption cylinder 34, and the check valve 38 is used for preventing the water from flowing back. The upper part of one side of the adsorption cylinder 34 is provided with a tail end water outlet pipe 39, water discharged from the tail end water outlet pipe 39 can be directly discharged, and certainly, the adsorption cylinder can be reconnected with subsequent equipment when special treatment is needed.
The upper portion and the lower part in the adsorption cylinder 34 are provided with two-layer and adsorption cylinder 34 matched with coarse filtration layer 40, be provided with vertical spiral helicine parting bead 41 in the adsorption cylinder 34 between the coarse filtration layer 40, the adsorption cylinder 34 inner chamber between the coarse filtration layer 40 forms spiral rising's rivers passageway under parting bead 41's effect. The water flow channel is filled with activated carbon particles 42. The coarse filter layer 40 includes an inner stainless steel mesh support layer 43, a non-woven fabric layer 44, a mesh fabric layer 45, and an outer stainless steel mesh support layer 46 in this order in a direction away from the activated carbon particles.
In the process of activated carbon adsorption treatment, under the pumping action of the water pump 37, water enters the adsorption cylinder 34 from the adsorption water inlet pipe 35, passes through the adsorption cylinder 34 from bottom to top, and is discharged from the tail end water outlet pipe 39. Compare with the traditional mode of intaking on, the mode of intaking down not only can make water more even with the active carbon contact, and be favorable to the impurity of bottom to subside the discharge. In addition, the spiral water flow channel is arranged in the adsorption cylinder 34, so that the contact stroke of the water body and the activated carbon is prolonged, the adsorption effect of the activated carbon on harmful substances is further improved, and the water outlet cleanliness of the tail end water outlet pipe 39 is greatly improved. In addition, the special structure of the coarse filtering layer 40 can not only fully remove impurities and block textile, but also has excellent supporting strength, and reduces the times of overhaul and maintenance.
Certainly, in order to facilitate replacement of the activated carbon particles 42, a side wall of the adsorption cylinder 34 is provided with a sealing access door 47, the position of the sealing access door 47 corresponds to the water flow channel, the sealing access door 47 can be opened or closed to realize sealing, the structure is simple, and reference can be made to arrangement of various sealing doors in the prior art, which is not described herein again. In order to discharge the impurities in the adsorption cylinder 34, an impurity cleaning pipe 48 is arranged at the lower part of one side of the adsorption cylinder 34, an impurity discharging valve is arranged on the impurity cleaning pipe 48, and the position of the impurity cleaning pipe 48 is lower than the coarse filtering layer 40 below.

Claims (4)

1. A textile wastewater treatment system is characterized in that: comprises a flocculation precipitation device (1), a biological contact oxidation device (2) and an active carbon adsorption device (3) which are arranged in sequence according to the wastewater treatment;
the flocculation precipitation device (1) comprises a flocculation precipitation tank, and the flocculation precipitation tank consists of a cylindrical stirring chamber (4) and a hydraulic flocculation tank (5) which is arranged at one side of the stirring chamber (4) and is provided with an opening at the top; the lower part of one side of the stirring chamber (4) close to the hydraulic flocculation tank (5) is provided with an overflowing hole (6) and is communicated with the inside of the hydraulic flocculation tank (5) through the overflowing hole (6); a stirring mechanism is arranged in the stirring chamber (4), and a flocculation water inlet pipe (7) and a dosing pipe (8) are arranged at the top of the stirring chamber (4); a plurality of vertical flocculation baffles (9) are arranged in the hydraulic flocculation tank (5) along the length direction of the hydraulic flocculation tank (5), the flocculation baffles (9) extend along the front and back direction of the hydraulic flocculation tank (5), one of the front and back sides of each flocculation baffle (9) is fixedly connected with the hydraulic flocculation tank (5), an overflowing notch (10) is formed between the other side of each flocculation baffle and the corresponding hydraulic flocculation tank (5), and the overflowing notches (10) corresponding to two adjacent flocculation baffles (9) are staggered; the flocculation partition plate (9) divides the interior of the hydraulic flocculation tank (5) into a plurality of galleries (11) which are parallel to each other, and the two adjacent galleries (11) are communicated with each other through an overflowing notch (10); a flocculation water outlet pipe (12) is arranged at the upper part of the tank wall of one side of the hydraulic flocculation tank (5) far away from the stirring chamber (4), and is communicated with the biological contact oxidation device (2) through the flocculation water outlet pipe (12);
flocculation sludge discharge pipes (13) are arranged at the bottom of each gallery (11) and the bottom of the stirring chamber (4), and the flocculation sludge discharge pipes (13) are communicated with a sludge discharge main pipe (14); each flocculation sludge discharge pipe (13) is provided with a sludge discharge electromagnetic valve (15);
a plurality of vertical sieve plates (16) are arranged at the bottom of each gallery (11) along the length direction of the gallery (11), and the sieve plates (16) divide the gallery (11) into a plurality of sedimentation partitions (17); the bottom of each settling subarea (17) of the corridor (11) is provided with a flocculated sludge discharge pipe (13);
a vertical flow surrounding column (18) is arranged in each settling subarea (17) of the gallery (11);
the bypass flow column (18) is gradually reduced from bottom to top;
the circumferential surface of the streaming column (18) is provided with spiral flow guide teeth (19) extending along the length direction of the streaming column (18);
except one gallery (11) close to the stirring chamber (4) in the hydraulic flocculation tank (5), the circumfluence columns (18) in two adjacent settling subareas (17) in the other galleries (11) are mutually staggered.
2. The textile wastewater treatment system of claim 1, wherein: the stirring mechanism comprises a stirring motor fixedly arranged at the center of the top of the stirring chamber (4), and the output end of the stirring motor is connected with the upper end of the stirring shaft (20); the lower end of the stirring shaft (20) vertically extends into the stirring chamber (4), and the lower part of the stirring shaft (20) is provided with spiral stirring teeth (21); a plurality of vertical stirring through holes (22) are uniformly arranged on the spiral stirring teeth (21).
3. The textile wastewater treatment system of claim 2, wherein: a section of the stirring shaft (20) above the spiral stirring teeth (21) is also provided with a refining conical disc (23), and the refining conical disc (23) is coaxially sleeved outside the stirring shaft (20) and is fixedly connected with the stirring shaft (20); a plurality of strip-shaped dispersing through holes (24) are formed in the refining conical disc (23), and the dispersing through holes (24) are annularly and uniformly distributed around the stirring shaft (20).
4. The textile wastewater treatment system of claim 3, wherein: the inner side wall of the stirring chamber (4) is further provided with turbulence strips (25) extending along the circumferential direction of the stirring chamber (4), and the turbulence strips (25) are wavy.
CN201910027880.4A 2019-01-11 2019-01-11 Textile wastewater treatment system Active CN109607967B (en)

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CN2743334Y (en) * 2004-12-03 2005-11-30 谭奇峰 Flow guide micro swing flocculation reaction pond
CN201116291Y (en) * 2007-10-16 2008-09-17 河北建设集团安装工程有限公司 Advanced wastewater treatment device
CN101591123A (en) * 2009-07-03 2009-12-02 江苏大学 A kind of printing and dyeing wastewater treatment system
CN203976586U (en) * 2014-07-02 2014-12-03 山东国瑞环保产业有限公司 Printing and dyeing wastewater treatment system
CN105753121A (en) * 2016-04-11 2016-07-13 武汉理工大学 Adjustable novel water treatment coagulating reaction system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2743334Y (en) * 2004-12-03 2005-11-30 谭奇峰 Flow guide micro swing flocculation reaction pond
CN201116291Y (en) * 2007-10-16 2008-09-17 河北建设集团安装工程有限公司 Advanced wastewater treatment device
CN101591123A (en) * 2009-07-03 2009-12-02 江苏大学 A kind of printing and dyeing wastewater treatment system
CN203976586U (en) * 2014-07-02 2014-12-03 山东国瑞环保产业有限公司 Printing and dyeing wastewater treatment system
CN105753121A (en) * 2016-04-11 2016-07-13 武汉理工大学 Adjustable novel water treatment coagulating reaction system

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