CN212451051U

CN212451051U - Integrated chemical fiber sewage treatment device

Info

Publication number: CN212451051U
Application number: CN202020498528.7U
Authority: CN
Inventors: 王�忠; 陈诚; 钱进; 王旭东; 沈泽林
Original assignee: Jiangsu Shunwei Environmental Engineering Co ltd
Current assignee: Jiangsu Shunwei Environmental Engineering Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-02-02
Anticipated expiration: 2030-04-08

Abstract

The utility model discloses an integration chemical fiber sewage treatment plant, this internal baffle that is equipped with of device separates the device for ozone pre-oxidation pond, anaerobism pond, oxygen deficiency pond, catalytic oxidation pond, sedimentation tank, follow-up processing pond in proper order, be equipped with the baffle in the ozone pre-oxidation pond and separate ozone pre-oxidation pond for pre-oxidation pond and mixed reaction tank, be equipped with the baffle in the follow-up processing pond and separate follow-up processing pond for ozone oxidation pond, middle pond, activated carbon filtering pond, backwash pond and sludge impoundment, pre-oxidation pond and ozone oxidation pond bottom all are equipped with the aeration board, are equipped with a plurality of aeration holes on the aeration board, still are equipped with the ozone air inlet on the aeration board and wash the mouth, are equipped with a plurality of guide plates in pre-oxidation pond and the ozone oxidation pond and are located the aeration board top, supreme interval arrangement forms end to end. The utility model discloses in have energy consumption low, shock-resistant load, investment province, operation simple and stable, management convenience, effectual advantage such as.

Description

Integrated chemical fiber sewage treatment device

Technical Field

The utility model relates to a chemical fibre sewage treatment field especially relates to an integration chemical fibre sewage treatment plant.

Background

Chemical fiber is a main raw material of textile industry in China, has kept a rapid growth situation for years, and polyester staple fiber is an important one in chemical fiber products. With the development of the polyester staple fiber industry, polyester manufacturers are increasing continuously. The discharge amount of the waste water is increased, and the pollution to the water body is also large. With the increasing discharge of chemical fiber sewage, untreated or improperly treated chemical fiber sewage becomes one of the main causes of water quality deterioration of rivers and lakes, and the burden of municipal sewage treatment plants is increased.

The polyester staple fiber is mainly from machine cooling water and cleaning water of textile devices, has high organic matter concentration, large acidity and large water quality and water quantity change, and often contains pollutants such as PTA, acetaldehyde, EG, diethylene glycol, triethylene glycol, spinning oil and the like.

The existing sewage treatment process suitable for polyester staple fibers in chemical fiber plants generally adopts a physical-chemical-physical mixed treatment process which mainly adopts a biological method. Because the chemical fiber wastewater is acidic or alkaline, the chemical fiber wastewater must be neutralized before treatment so that the pH value is in a neutral range. The acid waste water is neutralized by adding alkali, the alkaline waste water is neutralized by adding acid, and the acid-alkali waste water can be mixed and neutralized in places with conditions. After the pH value of the wastewater is adjusted, pretreatment is needed to remove SS and oil substances, such as air flotation oil removal and coagulating sedimentation for removing suspended matters and partial organic matters. The pretreatment process can improve the biodegradability of the wastewater. The pretreated wastewater enters a biological treatment unit, anoxic-aerobic biological treatment is generally adopted, most organic matters and other pollutants are effectively removed, but B/C is still difficult to reach more than 0.3, so that the COD of the effluent exceeds the standard. Although some processes add Fenton, ultraviolet and other advanced oxidation processes, the processes are complex, the consumption of the medicament is large, and the utilization rate of the medicament, ultraviolet and the like is not high.

In the traditional process, compared with a suspended growth biological system represented by an activated sludge method, an attached growth biological system (such as a biofilm method and an aeration biological filter), the attached growth biological system has the advantages of small sludge yield and simple system structure, but with the improvement of effluent standard, especially the proposal of first-class A standard, a plurality of traditional processes in the prior art need to be continuously added with a deep treatment device.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an integration chemical fiber sewage treatment plant.

The utility model discloses an innovation point lies in the utility model provides a device is suitable for not suitable to build sewage treatment plant or sewage and is difficult to collect sewage treatment plant centralized processing's occasion, for example small-size enterprise, various receive geographical position limit or investment cost problem unsuitable occasion of managing to collect central sewage plant and handle. The method has the advantages of low energy consumption, impact load resistance, investment saving, simple and stable operation, convenient management, good effect and the like.

In order to realize the purpose of the utility model, the technical proposal of the utility model is that: an integrated chemical fiber sewage treatment device comprises a device body, wherein a clapboard is arranged in the device body to sequentially divide the device into an ozone pre-oxidation tank, an anaerobic tank, an anoxic tank, a contact oxidation tank, a sedimentation tank and a subsequent treatment tank, the inside of the ozone pre-oxidation tank is provided with a clapboard to divide the ozone pre-oxidation tank into the pre-oxidation tank and a mixed reaction tank, the inside of the subsequent treatment tank is provided with a clapboard to sequentially divide the subsequent treatment tank into the ozone oxidation tank, an intermediate water tank, an activated carbon filter tank, a backwashing tank and a sludge tank, the pre-oxidation tank, the mixed reaction tank, the anaerobic tank, the anoxic tank, the contact oxidation tank, the sedimentation tank, the ozone oxidation tank, the intermediate water tank and the activated carbon filter tank are sequentially communicated, a water outlet pipeline of a water outlet of the activated carbon filter tank is communicated with the backwashing tank, a sludge pipeline is arranged between the sedimentation tank and the sludge tank, the bottom of the preoxidation tank and the ozone oxidation tank are both provided with aeration plates, the bottoms of the aeration plates, the preoxidation tank and the ozone oxidation tank are both provided with intervals, the aeration plates are provided with a plurality of aeration holes, the aeration plates are also provided with ozone air inlets and flushing ports, the ozone air inlets are communicated with an ozone generating device through ozone pipelines, the flushing ports are communicated with a backwashing tank through flushing pipelines, a plurality of guide plates are arranged in the preoxidation tank and the ozone oxidation tank and are positioned above the aeration plates, and the guide plates are arranged from bottom to top at intervals to form baffling channels which are connected end to end. The use of aeration board makes the aeration more even, and the use of guide plate makes the contact time of ozone and sewage prolong greatly, also makes whole pond not have the oxidation dead angle, has improved the utilization ratio of ozone greatly. The bottom of the aeration plate is provided with a washing port, and washing water comes from water in a backwashing pool. When the aeration is uneven and the aeration hole is partially blocked, the flushing water can be flushed into the lower part of the aeration plate under pressure, so that the problem that the aeration hole is easily blocked in the intermittent operation of ozone for a long time can be effectively solved, and the long-term stability of the aeration effect is kept.

Further, the aeration plate is made of a titanium alloy material. And the ozone corrosion resistance.

Furthermore, an automatic dosing device and an online pH meter are arranged on the pre-oxidation tank. The dosage can be adjusted according to the pH value measured by a pH meter.

Further, the free end of the guide plate inclines upwards, and the included angle between the guide plate and the horizontal plane is 5 degrees. Plays a role in guiding the flow of ozone bubbles.

Further, air stripping devices are arranged on the sludge pipeline and the sludge return pipeline.

Furthermore, the contact oxidation tank is communicated with the sedimentation tank through a water distribution pipe, inclined plate packing is arranged in the sedimentation tank, and the area of the water distribution pipe in the sedimentation tank is positioned below the inclined plate packing. The water distribution is more even, and the utilization ratio of swash plate packing is higher.

The utility model has the advantages that:

1. the utility model provides a device is suitable for unsuitable construction sewage treatment plant or sewage are difficult to collect sewage treatment plant centralized processing's occasion, for example small-size enterprise, various receive geographical position limit or investment cost problem unsuitable occasion of managing to collect central sewage treatment plant and handle. The method has the advantages of low energy consumption, impact load resistance, investment saving, simple and stable operation, convenient management, good effect and the like.

2. The utility model discloses in through ozone reinforcing preoxidation technique, improved the B/C of sewage for sewage is degraded more easily. The baffling channel technology greatly prolongs the contact time of ozone and sewage, and ensures that the whole ozone oxidation tank has no oxidation dead angle, thereby greatly improving the utilization rate of ozone. In addition, a plurality of flushing ports are arranged at the bottom of the aeration disc. When the aeration is uneven and the aeration holes are partially blocked, the ozone aeration device can be washed, so that the problem that the aeration holes are easy to block in the intermittent operation of ozone for a long time can be effectively solved, and the long-term stability of the aeration effect is kept.

3. And the ozone-enhanced pre-oxidation technology is also added at the rear part of the precipitated effluent, so that the sewage is further decolorized, the COD of the sewage is further reduced under the contact of high-efficiency ozone, and the excellent odor removal effect is achieved. The technology can improve the problem of unbalanced nutrition caused by water quantity change of the system by increasing the B/C of the incoming water, and is favorable for stable standard reaching of the outgoing water.

4. The chemical fiber sewage recycling always has the problem of chromaticity, the utility model discloses in strengthen the decoloration through ozone, in addition the active carbon adsorption process of back end for sewage chromaticity reaches the retrieval and utilization requirement.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Example 1: as shown in figures 1 and 2, an integrated chemical fiber sewage treatment device comprises a device body 1, a clapboard is arranged in the device body 1 to divide the device into an ozone preoxidation tank 2, an anaerobic tank 3, an anoxic tank 4, a contact oxidation tank 5, a sedimentation tank 6 and a subsequent treatment tank 7 in sequence, the clapboard is arranged in the ozone preoxidation tank 2 to divide the ozone preoxidation tank 2 into a preoxidation tank 8 and a mixed reaction tank 9, the subsequent treatment tank 7 is provided with a clapboard to divide the subsequent treatment tank 7 into an ozone oxidation tank 10, a middle water tank 11, an activated carbon filter tank 12, a backwashing tank 13 and a sludge tank 14, the preoxidation tank 8, the mixed reaction tank 9, the anaerobic tank 3, the anoxic tank 4, the contact oxidation tank 5, the sedimentation tank 6, the ozone oxidation tank 10, the middle water tank 11 and the activated carbon filter tank 12 are communicated in sequence, a water outlet pipeline of a water outlet of the activated carbon filter tank 12 is provided with a, a sludge pipeline 15 is arranged between the sedimentation tank 13 and the sludge tank 14, a sludge return pipeline 16 is arranged between the sedimentation tank 13 and the anaerobic tank 3, an air stripping device 23 is arranged on the sludge pipeline 15 and the sludge return pipeline 16, the contact oxidation tank 5 is communicated with the sedimentation tank 14 through a water distribution pipe 24, an inclined plate filler 25 is arranged in the sedimentation tank 14, and the region of the water distribution pipe 24 in the sedimentation tank 14 is positioned below the inclined plate filler 25. The bottom of the pre-oxidation tank 8 and the ozone oxidation tank 10 is provided with an aeration plate 17, the aeration plate 17 is made of titanium alloy, the aeration plate 17 and the pre-oxidation tank 8 are provided with intervals, the bottom of the ozone oxidation tank 10 is provided with a plurality of aeration holes 18, the aeration plate 17 is further provided with an ozone air inlet 19 and a flushing port 20, the ozone air inlet 19 is communicated with an ozone generating device through an ozone pipeline, the flushing port 20 is communicated with a backwashing tank 13 through a flushing pipeline 21, a plurality of guide plates 22 are arranged above the aeration plate 17 in the pre-oxidation tank 8 and the ozone oxidation tank 10, the guide plates 22 are arranged from bottom to top at intervals to form baffling channels connected end to end, the free end parts of the guide plates 22 incline upwards, the included angles of the guide plates 22 and the horizontal plane are 5 degrees, and the pre-oxidation tank 8 is provided.

When the device works, sewage enters the pre-oxidation tank 8 from a main water inlet, ozone is conveyed to the ozone inlet 19 of the aeration plate 17 at the bottom of the pre-oxidation tank 8 through an ozone pipeline, ozone micro-bubbles are released by the aeration plate 17 and react with pollutants such as aldehydes, phenols, benzenes and the like in the sewage after contacting the sewage, so that macromolecular substances are oxidized and decomposed into smaller inorganic substances or organic substances, the toxicity of the micromolecular substances can be greatly reduced, the biodegradability (namely B/C) of the sewage can be increased, and the subsequent biological treatment is facilitated; the pre-oxidation tank 8 is provided with a dosing point, the PH of the inlet water can be monitored according to an on-line PH meter arranged in the pre-oxidation tank 8, a dosing pump is controlled to dose the chemicals, the PH of the inlet water is adjusted, and the PH range is controlled to be 6-9; a washing port 20 is provided at the bottom of the aeration plate 17, and washing water is supplied from the backwashing tank 13. When the aeration is uneven and the aeration holes 18 are partially blocked, the washing water can be flushed under pressure into the lower part of the aeration plate 17, so that the problem that the aeration holes 18 are easily blocked in the intermittent operation of ozone for a long time can be effectively solved, and the long-term stability of the aeration effect is kept. In the pre-oxidation tank 8, a plurality of guide plates inclined by 5 degrees are arranged, so that ozone bubbles can be guided conveniently. The baffle forms baffling passageway can prolong the reaction time of ozone and water, reducible ozone's use amount, also can reduce the remaining concentration of ozone, reduce the residual amount of ozone in the air. Sewage enters the mixed reaction tank 9 from the pre-oxidation tank 8, and ozone and pollutants in water fully react in the mixed reaction tank 9, so that the utilization rate of ozone is increased; the wastewater in the mixed reaction tank 9 enters an anaerobic tank 3, biological fillers are arranged in the anaerobic tank 3, microorganisms are fully distributed on the fillers, hydrolysis, acidification, acetic acid production and methanation are synchronously performed, phosphorus-accumulating bacteria complete the step of releasing phosphorus, and part of COD is also removed in the step. The wastewater in the anaerobic tank 3 enters an anoxic tank 4, and a porous aeration disc at the bottom of the anoxic tank 4 is used for air stirring; organic nitrogen in the sewage is converted into ammonia nitrogen, NO2-N, NO3-N is converted into N2; part of the BOD is removed in the tank; the wastewater in the anoxic tank 4 enters a contact oxidation tank 5, and a microporous aerator at the bottom of the contact oxidation tank 5 is used for oxygen supply and aeration; ammonia nitrogen in the sewage is converted into NO2-N, NO3-N through nitrification; further decomposing the organic matters into inorganic matters to remove BOD pollutants; the microorganisms such as phosphorus accumulating bacteria can be excessive and exceed the physiological needs in quantity, take phosphorus from sewage, store the phosphorus in the bacteria in a polymerized form, form high-phosphorus sludge, discharge the sludge out of a system and achieve the effect of removing phosphorus from the sewage. The sewage in the contact oxidation tank 5 is uniformly distributed by a water distribution pipe 24 and enters a sedimentation tank 6, and the sludge and the water are separated by using an inclined pipe filler 25; the water after mud-water separation enters an ozone oxidation tank 10, and sludge is deposited at the bottom; the gas stripping device 23 lifts sludge at the bottom, part of the sludge enters the sludge tank, and part of the sludge flows back to the anaerobic tank 3; and (3) the sewage enters the ozone oxidation tank 10, pollutants in the sewage further react with ozone, the chromaticity, COD and peculiar smell are further removed, and the disinfection and sterilization are also completed in the step. Sewage enters an intermediate water tank 11 from an ozone oxidation tank 10, the intermediate water tank 11 is provided with a liquid level meter, the liquid level meter controls starting and stopping of an intermediate water pump of the intermediate water tank, and effluent of the intermediate water pump is pumped into an activated carbon filter 12. Filtered water is directly fed into a water consumption point, part of water enters the backwashing pool 13, the backwashing pool 13 is provided with a liquid level meter, the water supplementing electromagnetic valve is opened for automatic water supplementing when the liquid level is low, and the water supplementing electromagnetic valve is closed when the liquid level is high. The outlet of the backwashing pool is provided with a flushing pipeline 21 to the pre-oxidation pool 8 and the ozone oxidation pool 10, and the flushing pipeline 21 is provided with a manual valve.

The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. An integrated chemical fiber sewage treatment device is characterized by comprising a device body, wherein a partition plate is arranged in the device body to sequentially divide the device into an ozone pre-oxidation tank, an anaerobic tank, an anoxic tank, a contact oxidation tank, a sedimentation tank and a subsequent treatment tank, the ozone pre-oxidation tank is internally provided with a partition plate to divide the ozone pre-oxidation tank into the pre-oxidation tank and a mixed reaction tank, the subsequent treatment tank is internally provided with a partition plate to divide the subsequent treatment tank into the ozone oxidation tank, an intermediate water tank, an activated carbon filter tank, a backwashing tank and a sludge tank, the pre-oxidation tank, the mixed reaction tank, the anaerobic tank, the anoxic tank, the contact oxidation tank, the sedimentation tank, the ozone oxidation tank, the intermediate water tank and the activated carbon filter tank are sequentially communicated, a water outlet branch pipe and the backwashing tank are communicated with each other on a water outlet pipeline of the activated carbon filter tank, a sludge pipeline is arranged between the sedimentation tank and the, the bottom of the preoxidation tank and the ozone oxidation tank are both provided with aeration plates, the bottoms of the aeration plates, the preoxidation tank and the ozone oxidation tank are both provided with intervals, the aeration plates are provided with a plurality of aeration holes, the aeration plates are also provided with ozone air inlets and flushing ports, the ozone air inlets are communicated with an ozone generating device through ozone pipelines, the flushing ports are communicated with a backwashing tank through flushing pipelines, a plurality of guide plates are arranged in the preoxidation tank and the ozone oxidation tank and are positioned above the aeration plates, and the guide plates are arranged from bottom to top at intervals to form baffling channels which are connected end to end.

2. The integrated chemical fiber sewage treatment device of claim 1, wherein the aeration plate is made of a titanium alloy material.

3. The integrated chemical fiber sewage treatment device according to claim 1, wherein an automatic chemical feeding device and an online pH meter are arranged on the pre-oxidation tank.

4. The integrated chemical fiber sewage treatment device of claim 1, wherein the free end of the guide plate is inclined upwards, and the included angle between the guide plate and the horizontal plane is 5 degrees.

5. The integrated chemical fiber sewage treatment device of claim 1, wherein the sludge pipeline and the sludge return pipeline are provided with air stripping devices.

6. The integrated chemical fiber sewage treatment device of claim 1, wherein the contact oxidation tank and the sedimentation tank are communicated through a water distribution pipe, inclined plate packing is arranged in the sedimentation tank, and the area of the water distribution pipe in the sedimentation tank is positioned below the inclined plate packing.