CN110963565A - Waste water treatment device combining activated sludge process and biofilm process - Google Patents
Waste water treatment device combining activated sludge process and biofilm process Download PDFInfo
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- CN110963565A CN110963565A CN201911422339.XA CN201911422339A CN110963565A CN 110963565 A CN110963565 A CN 110963565A CN 201911422339 A CN201911422339 A CN 201911422339A CN 110963565 A CN110963565 A CN 110963565A
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- 239000010802 sludge Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000006243 chemical reaction Methods 0.000 claims abstract description 52
- 238000004062 sedimentation Methods 0.000 claims abstract description 38
- 239000000945 filler Substances 0.000 claims abstract description 24
- 238000005273 aeration Methods 0.000 claims abstract description 15
- 238000005276 aerator Methods 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 abstract description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Images
Classifications
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- 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
- C02F3/02—Aerobic processes
- C02F3/08—Aerobic processes using moving contact bodies
-
- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
-
- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to a wastewater treatment device combining an activated sludge process and a biofilm process, which comprises a treatment tank, wherein a partition plate is fixed in the treatment tank, a wastewater inlet pipe is connected to a water distribution cavity, and a gap is formed between the lower end of the partition plate and the bottom wall of the treatment tank; the micropore aerator has been arranged to the reaction chamber bottom, the micropore aerator is connected with the aeration pipeline, the filling frame has been laid to the reaction chamber, the last combination filler that hangs of filling frame, one side subsides of treatment tank are equipped with the sedimentation tank, the reaction chamber upper end flushes with the upper end of sedimentation tank and constitutes the overflow mouth, sedimentation tank upper portion has the exhalant department, the height that highly is less than the overflow mouth of exhalant department, the bottom of sedimentation tank has the mud return line, be equipped with sludge pump and return switch on the mud return line, the bottom of treatment tank has the mud discharge port. Simple structure, take up an area of less, activated sludge concentration can reach 5 ~ 6g/l, and COD, BOD, ammonia nitrogen clearance reach more than 90%, and total nitrogen gets rid of more than efficiency 60%, and the running cost is low.
Description
Technical Field
The invention relates to a sewage treatment process, in particular to a wastewater treatment device combining an activated sludge process and a biofilm process.
Background
At present, the method for biologically treating sewage mainly comprises two methods: an activated sludge process and a biofilm process.
The activated sludge process is a biological wastewater treatment technology taking activated sludge as a main body, the BOD and suspended matter removal rate of the activated sludge process is high and reaches 90-95%, but the following technical defects exist: the sludge concentration of the activated sludge method is limited, and the activated sludge concentration of the aeration tank is generally 2-4 g/l; in addition, the activated sludge process has poor denitrification effect, the activated sludge in the aeration tank generally mainly comprises carbonized bacteria and nitrifying bacteria, and the activated sludge is difficult to form denitrifying bacteria in an aerobic state.
The biomembrane method is a wastewater biological treatment technology which is characterized in that a combined filler is arranged in an aeration tank, and a biomembrane is fully distributed on the combined filler, and mainly comprises the biomembrane on the combined filler, but the following defects still exist: the biological number of the biological membrane is limited, and the sludge concentration range is between 2 and 3 g/l; in addition, the sedimentation performance of the metabolic sloughed biological membrane is poor: the biomembrane dropped off by metabolism is broken, so that a large amount of suspended matters are carried by the effluent, and the quality of the effluent is influenced.
Disclosure of Invention
The invention aims to provide a wastewater treatment device and a wastewater treatment method combining an activated sludge process and a biofilm process, and aims to solve the problems of low sludge concentration, low treatment efficiency and poor sludge settling performance in the prior art by adopting the activated sludge process or the biofilm process alone.
In order to solve the problems, the activated sludge process and biofilm process combined wastewater treatment device adopts the following technical scheme:
the waste water treatment device combining the activated sludge method and the biomembrane method comprises a treatment tank, wherein a vertically arranged partition plate is fixed in the treatment tank to divide the treatment tank into a left water distribution cavity and a right reaction cavity, a waste water inlet pipe is connected to the water distribution cavity, and a strip-shaped interval is arranged between the lower end of the partition plate and the bottom wall of the treatment tank to communicate the bottom of the water distribution cavity with the bottom of the reaction cavity; the bottom of the reaction chamber is provided with a microporous aerator which is connected with an aeration pipeline, a filler frame is arranged in the reaction chamber above the microporous aerator at intervals along the horizontal direction, a combined filler is hung on the filler frame, one side of the treatment tank is attached with a sedimentation tank, the upper end of the corresponding side of the reaction chamber is flush with the upper end of the sedimentation tank to form an overflow port for water in the reaction chamber to overflow and flow into the sedimentation tank, the upper part of the sedimentation tank is provided with a water outlet for discharging standard water after sedimentation, the height of the water discharge port is lower than that of the overflow port, the bottom of the sedimentation tank is provided with a sludge return pipeline which is communicated with the bottom of the reaction chamber so as to discharge settled sludge into the reaction chamber, a sludge pump and a return switch are arranged on the sludge return pipeline, a channel for introducing activated sludge is arranged on the treatment tank or the sedimentation tank, and the bottom of the treatment tank is provided with a sludge discharge port.
Furthermore, a sludge discharge pipe is connected to the sludge return pipeline, and an emptying switch is arranged on the sludge discharge pipe.
Furthermore, a triangular overflow weir type water tank is arranged at the upper end edge of the reaction cavity, and the triangular overflow weir type water tank forms the overflow port.
Furthermore, the bottom of the reaction cavity is provided with a water collecting pit which is concave downwards, and the sludge discharge port is arranged at the lower part of the water collecting pit.
Furthermore, the bottom of the sedimentation tank is a conical tank structure with a central position which is concave downwards, and the sludge return pipeline is connected with the bottom of the conical tank.
The invention has the following beneficial effects: compared with the prior art, the activated sludge process and biofilm process combined wastewater treatment device has the following beneficial effects:
1. the sludge concentration in the treatment tank can reach 5-6g/l, and the biomass is increased by 1.5 times compared with a single activated sludge method; compared with a single biofilm method, the biofilm method is increased by 1.5-2 times, and the effective crowding of the treatment pool is correspondingly reduced by 50 percent.
2. In addition, the combined filler has better sedimentation effect for replacing a fallen biological film: the good adsorption effect of the zoogloea in the activated sludge enables the dropped biological membrane to be effectively settled, and the effluent suspended matters are few;
3. the biological membrane has a certain denitrification function: biofilm hanging shapeAfter the end, the microorganisms located inside the membrane are in an anoxic state, and can metabolize NOx in the aeration tank into N2Realize denitrogenation, rationally adjust carbon nitrogen ratio, total nitrogen clearance can reach more than 60%.
Simple structure takes up an area of less, and active sludge concentration can reach 5 ~ 6g/l in the device, and COD, BOD, ammonia nitrogen clearance are up to more than 90%, and total nitrogen gets rid of more than efficiency 60%, is particularly useful for high concentration organic waste water, and the running cost is low.
In addition, when in actual use, activated sludge is firstly put into the treatment tank, wastewater enters the water distribution cavity from the wastewater inlet pipe and then enters the reaction cavity through intervals, the interval is mainly set because the wastewater is directly introduced into the treatment tank by the existing water pipe, and the wastewater can generate short flow phenomenon when entering the treatment tank, so that the wastewater cannot be fully treated; in addition, the wastewater enters the sedimentation tank through the overflow port after being treated, so that the water at the overflow part can be guaranteed to have enough time for sedimentation, the settled water reaching the standard is directly discharged, and the sludge at the bottom can enter the reaction cavity again through the sludge return pipeline for recycling.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings needed to be used in the embodiment will be briefly described as follows:
FIG. 1 is a schematic structural view of a wastewater treatment device combining an activated sludge process and a biofilm process according to an embodiment of the present invention;
description of reference numerals: 1-a treatment tank; 2-a separator; 3-a reaction chamber; 4-water distribution cavity; 5-a wastewater inlet pipe; 6-water inlet switch; 7-a microporous aerator; 8-an aeration pipeline; 9-aeration switch; 10-a packing frame; 11-a sedimentation tank; 12-an overflow port; 13-a drain pipe; 14-a drain switch; 15-sludge return line; 16-a reflux switch; 17-a sludge pump; 18-sludge discharge pipe; 19-a drain switch; 20-an emptying pipe; 21-an emptying switch; 22-a sump; 23-activated sludge; 24-a combination filler; 25-interval.
Detailed Description
In order to make the technical purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are further described below with reference to the accompanying drawings and specific embodiments.
The specific embodiment of the wastewater treatment device combining the activated sludge process and the biofilm process according to the present invention is shown in fig. 1, and the treatment device comprises a treatment tank 1, in the present embodiment, wastewater enters the treatment tank 1 to be treated, all other structures are arranged on the treatment tank 1, the structure is a square structure, and a steel material or steel concrete structure is adopted, however, in other embodiments, the treatment tank 1 may also be a circular or polygonal structure, or the specific shape thereof is not limited, and the material is not specifically limited, and those skilled in the art can design the treatment device at will according to actual needs.
The upper end opening of treatment tank 1 is in order to let in activated sludge 23 in the treatment tank 1, treatment tank 1 internal fixation has the baffle 2 of erectting the arrangement, be used for separating into about treatment tank 1 and controlling two spaced cavitys, be left water distribution chamber 4 and right side reaction chamber 3 respectively, in addition, this baffle 2 is the rectangle plate structure, be formed with the interval 25 of rectangular shape between the lower extreme of baffle 2 and the diapire of treatment tank 1, the length of interval 25 is unanimous with baffle 2 front and back width, can communicate the bottom in water distribution chamber 4 and the bottom in reaction chamber 3 like this, make things convenient for waste water to flow into reaction chamber 3 from water distribution chamber 4 bottom, make the inside structure that forms similar linker of treatment tank 1. A wastewater inlet is correspondingly arranged at the upper part of the water distribution cavity 4, a wastewater inlet pipe 5 is connected at the wastewater inlet, and a water inlet switch 6 is connected on the wastewater inlet pipe 5. Rectangular shape interval 25 that sets up, in the actual work process, mainly because current adoption water pipe directly lets in waste water to handling pond 1, waste water can take place the short current phenomenon when getting into to handle pond 1, lead to the unable abundant processing of waste water, and set up interval 25 and then can avoid this problem completely, waste water is when the bottom that gets into reaction chamber 3 through long banding interval 25, nearly everywhere is the same on its velocity of flow interval 25's the cross-sectional area, and get into reaction chamber 3 through the bottom, the reaction time of increase waste water that can be reasonable, guarantee waste water treatment's completeness.
In addition, the wastewater treatment device also comprises a plurality of microporous aerators 7 arranged at the bottom of the reaction chamber 3, and in the embodiment, the structure and the working principle of the microporous aerators 7 are the same as those of the existing microporous aerators 7, which will not be described in detail. The microporous aerator 7 is connected with an aeration pipeline 8, after the aeration pipeline 8 communicates each microporous aerator 7, the right side wall of the clapboard 2 extends upwards to the upper part of the treatment tank 1, and an aeration switch 9 is arranged at the air inlet end of the aeration pipeline 8.
Meanwhile, the suspension type combined filler is arranged in the reaction cavity 3 above the microporous aerator 7 at intervals 25 along the horizontal direction, and particularly, the filler frame 10 for suspending the combined filler 24 is fixed in the reaction cavity, so that the wastewater can be in full contact reaction with a biological membrane formed on the combined filler 24. The structure and the working principle of the stuffing frame 10 are basically the same as those in the prior art, and are not specifically described.
In addition, a sludge discharge pipe 18 is connected to the return line, and a discharge switch 19 is provided on the sludge discharge pipe 18, so that the excess sludge in the sedimentation tank 11 can be directly discharged. Meanwhile, a sludge discharge port is arranged at the bottom of the reaction chamber 3 and is connected with a vent pipe 20, and a vent switch 21 is arranged on the vent pipe 20 and is used for venting the sludge at the bottom of the reaction chamber 3 to the outside. In other embodiments, the sludge discharge pipe 18 may not be provided, and the sludge may be discharged directly through the sludge discharge port.
In this embodiment, a triangular weir type water tank is provided along the upper end of the reaction chamber 3, and the triangular weir type water tank forms the overflow port 12. And set up the basin of triangle overflow weir formula, in actual work in-process, can guarantee the velocity of flow control and the stability of velocity of flow of the rivers that overflow. Of course, in other embodiments, a U-shaped groove or other groove-shaped structures may be directly adopted.
The reaction chamber 3 has a sump 22 recessed downward at the bottom thereof, and the sludge discharge port is provided at the lower portion of the sump 22. Therefore, the sludge at the bottom of the reaction cavity 3 can be conveniently accumulated in the water collecting pit 22, and the discharge is convenient. Of course, in other embodiments, the catch pit 22 may not be provided, and the catch pit 22 may also be provided as an arc-shaped pit, which is not particularly limited.
Meanwhile, the sedimentation tank 11 is of an upper column and lower cone structure, the bottom of the sedimentation tank 11 is of a cone-shaped groove structure with a central position which is concave downwards, and the sludge return pipeline 15 is connected to the bottom of the cone-shaped groove. Therefore, the sludge in the settled sludge can be conveniently settled to the bottom of the tank along the wall surface of the conical tank.
In the actual working process of the wastewater treatment device, before the device runs, after a certain amount of aerobic activated sludge 23 is added into the treatment tank 1, the water inlet switch 6 is opened, wastewater enters the water distribution cavity 4 through the wastewater inlet pipe 5, and the wastewater uniformly enters the reaction cavity 3 from the bottom of the water distribution cavity 4. And opening an aeration switch 9 on an aeration pipeline 8, and aerating the wastewater through a microporous aerator 7 at the bottom of the reaction cavity 3. The wastewater is fully contacted and reacted with the activated sludge 23 and the biological film on the combined filler 24 in the reaction cavity 3, so that the purification effect of pollutants is realized. The mixed liquid enters the sedimentation tank 11 through a triangular overflow weir type water tank at the upper part of the reaction cavity 3, and the activated sludge 23 and the wastewater are effectively settled and separated in the sedimentation tank 11. The drain switch 14 on the drain pipe 13 is opened. Discharging the water reaching the standard. And opening a return switch 16 on the sludge return pipeline 15, starting a sludge pump 17, and returning the activated sludge 23 to the reaction chamber 3 for recycling. In addition, a discharge switch 19 on a sludge discharge pipe 18 is periodically opened to discharge excess sludge. When the reaction chamber 3 needs to be emptied during maintenance, the emptying switch 21 on the emptying pipe 20 can be opened to discharge the reaction chamber 3.
In the present embodiment, the combined filler 24 specification is preferably a specific surface area: 2360m2/m3Porosity 97%, monolithic diameter 150mm, average platelet spacing 100mm, combined packing structure form: clamping piece type, acid and alkali resistance. The length of the single comb combined filler 24 is 3000-3500mm, the suspension distance is 160mm, the number of the combined fillers 24 accounts for 65-70% of the volume of the pool, and the film hanging can be completed within three weeks after the device is started. Of course, in other embodiments, the specification of the combined filler 24 may be arbitrarily selected according to actual needs, and is not particularly limited.
Preferably, the inoculation concentration of the aerobic activated sludge 23 is 800-1500 mg/l. The control range of the sludge reflux ratio is 40-100%.
In the actual treatment process, the sludge concentration assay data is as shown in table one:
watch 1
The COD index of the inlet water and the outlet water of the device is shown in the table II:
watch two
The ammonia nitrogen indexes of inlet water and outlet water of the device are as shown in the third table:
watch III
The total nitrogen indexes of inlet water and outlet water of the device are as shown in the fourth table:
watch four
And (3) comprehensive analysis: the sludge concentration in the reaction cavity 3 can reach 5-6g/l, the wastewater treatment capacity per unit volume is increased by 1.5-2 times, the membrane hanging period time of the activated sludge 23 culture and the combined filler 24 is short, only about two weeks is needed, the biomembrane metabolized and fallen off by the combined filler 24 is mixed with the activated sludge 23, the sedimentation performance is greatly improved, and the effluent suspended matters are effectively controlled. An anoxic environment can be formed inside the biological membrane on the combined filler 24, a better denitrification effect can be realized, the removal rate of COD, BOD and ammonia nitrogen is up to more than 90%, and the total nitrogen removal efficiency is more than 60%. In conclusion, the device has the advantages of simple process structure, reasonable construction cost, high treatment efficiency, stable operation and convenient maintenance, and is suitable for treating organic wastewater with higher concentration.
Finally, it should be noted that: the above embodiments are merely illustrative and not restrictive of the technical solutions of the present invention, and any equivalent substitutions and modifications or partial substitutions made without departing from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. The waste water treatment device combining the activated sludge method and the biomembrane method is characterized by comprising a treatment tank, wherein a vertically arranged partition plate is fixed in the treatment tank to divide the treatment tank into a left water distribution cavity and a right reaction cavity; the bottom of the reaction chamber is provided with a microporous aerator which is connected with an aeration pipeline, a filler frame is arranged in the reaction chamber above the microporous aerator at intervals along the horizontal direction, a combined filler is hung on the filler frame, one side of the treatment tank is attached with a sedimentation tank, the upper end of the corresponding side of the reaction chamber is flush with the upper end of the sedimentation tank to form an overflow port for water in the reaction chamber to overflow and flow into the sedimentation tank, the upper part of the sedimentation tank is provided with a water outlet for discharging standard water after sedimentation, the height of the water discharge port is lower than that of the overflow port, the bottom of the sedimentation tank is provided with a sludge return pipeline which is communicated with the bottom of the reaction chamber so as to discharge settled sludge into the reaction chamber, a sludge pump and a return switch are arranged on the sludge return pipeline, a channel for introducing activated sludge is arranged on the treatment tank or the sedimentation tank, and the bottom of the treatment tank is provided with a sludge discharge port.
2. The combined activated sludge process and biofilm process wastewater treatment plant as claimed in claim 1, wherein a sludge discharge pipe is connected to the sludge return line, and a blow-down switch is arranged on the sludge discharge pipe.
3. The combined activated sludge process and biofilm process wastewater treatment plant as claimed in claim 1, wherein the upper edge of said reaction chamber is provided with a triangular overflow weir type water tank, said triangular overflow weir type water tank constituting said overflow port.
4. The combined activated sludge process and biofilm process wastewater treatment apparatus as claimed in any of claims 1 to 3, wherein the reaction chamber has a sump recessed downward at a bottom thereof, and the sludge discharge port is provided at a lower portion of the sump.
5. The combined activated sludge process and biofilm process wastewater treatment plant as claimed in any of claims 1 to 3, wherein the bottom of the sedimentation tank is a cone-shaped tank structure with a downward concave central position, and the sludge return line is connected to the bottom of the cone-shaped tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911422339.XA CN110963565A (en) | 2019-12-31 | 2019-12-31 | Waste water treatment device combining activated sludge process and biofilm process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911422339.XA CN110963565A (en) | 2019-12-31 | 2019-12-31 | Waste water treatment device combining activated sludge process and biofilm process |
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| CN110963565A true CN110963565A (en) | 2020-04-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385437A (en) * | 2022-08-12 | 2022-11-25 | 福建省闽环智能科技有限公司 | Composite water treatment equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223972A (en) * | 1998-11-19 | 1999-07-28 | 昆明金京田科贸有限责任公司 | Technology and apparatus for treatment of sewage by double baffle type biological process |
| CN212024894U (en) * | 2019-12-31 | 2020-11-27 | 刘士军 | Activated sludge process and biofilm process combined wastewater treatment device |
-
2019
- 2019-12-31 CN CN201911422339.XA patent/CN110963565A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223972A (en) * | 1998-11-19 | 1999-07-28 | 昆明金京田科贸有限责任公司 | Technology and apparatus for treatment of sewage by double baffle type biological process |
| CN212024894U (en) * | 2019-12-31 | 2020-11-27 | 刘士军 | Activated sludge process and biofilm process combined wastewater treatment device |
Non-Patent Citations (1)
| Title |
|---|
| 李轶, 翟剑峰, 阮晓红: "复合生物反应器工艺对化纤废水的处理研究", 环境污染治理技术与设备, no. 02, 26 April 2001 (2001-04-26), pages 91 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115385437A (en) * | 2022-08-12 | 2022-11-25 | 福建省闽环智能科技有限公司 | Composite water treatment equipment |
| CN115385437B (en) * | 2022-08-12 | 2023-09-12 | 福建省闽环智能科技有限公司 | Composite water treatment equipment |
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