CN111285502A - Sewage combined treatment equipment and treatment method - Google Patents
Sewage combined treatment equipment and treatment method Download PDFInfo
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- CN111285502A CN111285502A CN202010216227.5A CN202010216227A CN111285502A CN 111285502 A CN111285502 A CN 111285502A CN 202010216227 A CN202010216227 A CN 202010216227A CN 111285502 A CN111285502 A CN 111285502A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000010865 sewage Substances 0.000 title claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000004062 sedimentation Methods 0.000 claims abstract description 62
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 230000001112 coagulating effect Effects 0.000 claims abstract description 6
- 239000013049 sediment Substances 0.000 claims abstract description 6
- 239000010419 fine particle Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 38
- 239000010802 sludge Substances 0.000 claims description 29
- 238000005189 flocculation Methods 0.000 claims description 18
- 230000016615 flocculation Effects 0.000 claims description 18
- 239000003814 drug Substances 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 4
- 238000011001 backwashing Methods 0.000 claims description 3
- 238000006213 oxygenation reaction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 claims 4
- 230000008569 process Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 2
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- 239000002244 precipitate Substances 0.000 abstract 1
- 239000002352 surface water Substances 0.000 abstract 1
- 229920002401 polyacrylamide Polymers 0.000 description 10
- 239000000701 coagulant Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000001471 micro-filtration Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920000926 Galactomannan Polymers 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
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- 235000020188 drinking water Nutrition 0.000 description 1
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- 230000003311 flocculating effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
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- 229920001155 polypropylene Polymers 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to an ecological filtration treatment process technology for treating water quality of five types of inferior river channels or water quality of black and odorous river channels. The utility model provides a can carry out water purification's processing technology to surface water, increase pipe chute sediment and physics filtration technique on the basis of high-density sedimentation tank principle, add PAC earlier stage, PAM can adsorb the suspended particles of aquatic, play the effect of linking bridge between the granule, make the fine particle form than great wadding group, and the speed of sediment has been accelerated, at the sediment filtration through the inclined plate sedimentation tank, effectively get rid of coagulating impurity and precipitate, filter through cell body later stage fibre filter cloth, effectively get rid of aquatic SS suspended solid, clear water after the processing gets into the clear water pond, built-in aeration system, make the play water oxygen content improve greatly, aeration makes oxygen utilization ratio reach the highest before going out water.
Description
Technical Field
The invention belongs to the field of treatment of river sewage, and particularly relates to a multi-mode combined sewage treatment technology.
Background
The current social economy develops rapidly, people's living standard improves day by day, and environmental problem is also more and more severe, and the pollution of rivers and lakes not only influences the ecological balance of waters, threatens human drinking water safety too. The basic reasons of river and lake pollution, namely the water body pollutant carrying capacity exceeds the water purifying capacity of the river and lake pollution, the characteristics of high pollutant concentration and the like enable the water quality of the water body to be continuously deteriorated, various treatment schemes have little effect, a large amount of sewage is still directly discharged into the river and lake after source control and sewage interception, the difficulty of river and lake water area treatment and later maintenance is increased, and the purified water quality is difficult to maintain for a long time.
According to the policies of 'ten water items' and 'three-year action scheme for rural human settlements environment improvement' of the latest watershed water body treatment policy in the water environment market, the water quality treatment control of rivers, lakes and lakes is more strict, the proportion of the water section with the lost use function (inferior to V type) in the Jingjin Ji area is required to be reduced by about 15pct, and the long triangle and the bead triangle areas strive to eliminate the water body with the lost use function.
Aiming at the current water environment treatment policy, the company develops a microfiltration method for treating river water, and the microfiltration method has the main functions of reducing ammonia nitrogen elements in the water body, reducing metal elements and suspended pollutants in the water and improving turbidity. The product is optimized on the basis of the traditional process, adopts an efficient treatment method, is suitable for treating rural domestic sewage, town wastewater, river basin water and the like, and achieves the aims of treating wide areas and improving river water quality by one or more grades. . The amount of pollutants such as nitrogen, phosphorus, organic matters and the like entering rivers and lakes from a sewage discharge outlet is intelligently reduced, and meanwhile, the water transparency is improved, and the self-purification capacity of the water is improved.
Disclosure of Invention
The invention provides a microfiltration method for treating river sewage, reducing suspended organic matters and reducing ammonia nitrogen.
The technical problem to be solved by the invention is as follows: in order to overcome the phenomenon of black and odorous river channels or reduce the phenomenon of organic matter pollution.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method combining high-density flocculation and inclined plate precipitation is utilized to efficiently settle harmful impurities such as suspended organic matters, and an aeration oxygenation method is adopted at the tail end of discharge, so that the water quality transparency is effectively improved.
In particular, the invention provides a combined sewage treatment device. The equipment sequentially comprises a mixing tank (1), a high-density flocculation tank (2), a sedimentation tank (3), a filter tank (4) and an aeration tank (5) along the sewage treatment direction, wherein the mixing tank (1) is provided with a water inlet pipe, and one side of the aeration tank (5) is provided with a water outlet pipe; the method is characterized in that: the mixing tank (1) and the high-density flocculation tank (2) are both provided with dosing pipelines, PAC (PAC) agents are added into the mixing tank, and PAM (Polyacrylamide) agents are added into the high-density sedimentation tank.
Further, it is preferable that a part of the sludge at the bottom of the sedimentation tank (3) is returned to the mixing tank (1).
Further, preferably, a pretreatment tank (6) is arranged in front of the mixing tank for pretreating sewage, and a part of sludge at the bottom of the filtering tank (4) flows back to the mixing tank (1).
Furthermore, a plurality of layers of stirring paddles (7) are arranged in the mixing tank (1) to mix the added medicine; the high-density flocculation tank (2) is provided with a frame type stirring paddle (8) and a guide cylinder (9).
Further, the sedimentation tank (3) is an inclined plate sedimentation tank, an inclined plate area is arranged in the middle of the sedimentation tank, the bottom of the sedimentation tank is conical, a sludge suction pipe is arranged at the bottom of the conical and used for periodically cleaning sludge, and a part of sludge at the bottom of the sedimentation tank flows back to the mixing tank.
Furthermore, a filter frame (11) is arranged in the filter tank (4), fiber filter cloth is arranged on the periphery and the bottom of the filter frame (11), sewage overflows from the sedimentation tank and enters the outside of the filter frame, a water pumping pipe is arranged in the filter frame, and the sewage penetrating through the filter frame is pumped into the aeration tank by a water pumping pipeline; the bottom and the periphery of the filter frame are provided with backwashing devices (12) for periodically cleaning the filter cloth, and the bottom of the filter tank (4) is provided with a sludge suction pipe for periodically cleaning sludge and returning a part of the sludge at the bottom of the sedimentation tank to the mixing tank.
The invention also aims to provide a method for treating sewage by adopting the sewage combined treatment equipment, which comprises the following steps: adding PAC into sewage through a mixing tank, uniformly mixing, then entering a high-density flocculation tank, adding a PAM medicament, adsorbing suspended particles in water, and playing a role in bridging among the particles to enable fine particles to form larger floccules, so that the sedimentation speed is accelerated in the period; then overflowing into a sedimentation tank to effectively remove coagulating impurities and sediments; overflowing into a filter tank after the precipitation is finished, effectively removing SS suspended matters in water, allowing the treated clear water to enter a clear water tank, and discharging after aeration and oxygenation; and returning a part of sludge at the bottom of the sedimentation tank to the mixing tank.
Furthermore, a guide cylinder and stirring are adopted in the high-density flocculation tank for circulation, and internal circulation formed by high-speed stirring can reduce the addition of the PAM auxiliary agent.
Furthermore, the sedimentation tank is internally precipitated by an inclined tube.
Furthermore, a filter frame surrounded by fiber filter cloth is adopted in the filter tank for filtering, sewage is filtered from the outside to the inside of the filter frame, and the inside filtered water is sent to the aeration tank through a water pumping pipe.
Further, a part of the sludge at the bottom of the filtering tank is returned to the mixing tank for circular treatment.
The process of the invention uses PAC (inorganic polymer coagulant, polyaluminium chloride) and water to mix in a mixing tank at the earlier stage, then PAM (polyacrylamide) is added and mixed in a high-density sedimentation tank efficiently and fully, then flocculation is carried out, suspended particles in water are adsorbed, a link bridge effect is carried out among the particles, fine particles form a larger floccule, the sedimentation speed is accelerated during the process, coagulating impurities and sediments are effectively removed through sedimentation and filtration in an inclined tube sedimentation tank, SS (suspended substances) in water is effectively removed through filtration of fiber filter cloth in a tank body at the later stage, the treated clear water enters a clear water tank, and an aeration system is arranged in the clear water tank.
The invention can bond and gather the colloidal particles in the water together in the water treatment process through the combined action of different flocculation agents, so that the impurities generate substances of coagulation and flocculation. When the ground water is used as a water source, turbidity and bacteria are removed. After coagulating sedimentation, the turbidity is generally less than 10 degrees.
One of the main cores of the method is the combination of a high-density sedimentation method, the method adopts the water body load of 20 times, the high-speed circulation in a high-density sedimentation tank ensures that the dosage of PAM (polyacrylamide) added for coagulation assistance is greatly reduced, and the water body is fully contacted with the medicament. The coagulant aid is a chemical agent which is matched with a coagulant to enable solid suspended matters gathered in water to be rapidly settled. Mainly water-soluble organic polymers such as galactomannans, partially hydrolyzed polyacrylamides, and the like.
Specifically, one of the main cores of the method is the combination of an inclined tube sedimentation tank method, the laminar flow principle is utilized through an inclined plate, the treatment capacity of the sedimentation tank is improved, the particle sedimentation distance is shortened, the sedimentation time is shortened, the sedimentation area of the sedimentation tank is increased, and the treatment efficiency is improved. The overflow rate of this type of sedimentation tank can reach 36m3/(m2H) is 7-10 times higher than the treatment capacity of a common sedimentation tank, and is novel efficient sedimentation equipment.
The weaving process is twill weaving process and features that the filter cloth has high impact strength, less shedding of surface fiber, no shedding of fiber and no damage of filter cloth during reverse flushing or dirt sucking. The height of the fibers on the surface of the filter cloth is 10-12 mm, and the fibers can ensure that impurities attached to the filter cloth completely fall off during backflushing or dirt pumping, so that the service life is prolonged. The polyester, the polypropylene and the cellulose have very smooth surfaces, are not hydrophilic, are corrosion resistant, and are ideal raw materials due to hydrochloric acid, the effluent quality is good and stable, reaches the first-class A water discharge standard, and the filter cloth is not blocked.
The scheme of the invention has the beneficial effects that:
() Through adding different medicaments to carry out adsorption and coagulating sedimentation, and simultaneously adopting the stirring with the guide cylinder, the effect of full high-density sedimentation is achieved, and the dosage of the medicaments is also saved.
(2) In the fiber filtering method, sewage is filtered from the inner part of the outer net, so that sludge adsorbed on the filter cloth is conveniently treated.
(3) The invention adopts the combination of high-density flocculation, inclined plate sedimentation and fiber filtration methods to reduce the concentration of suspended organic matters in the water body, increase the dissolved oxygen amount in the water body of the riverway, improve the transparency, effectively improve the biological micro-ecosystem of the water body and restore the biological diversity of the water body. Meanwhile, the implementation process of the scheme is mature, the equipment is simple, and the treatment effect is better in water treatment practice.
Description of the drawings:
FIG. 1 is a schematic flow diagram of the process of the present invention.
FIG. 2 is a schematic view of a treatment apparatus of the present invention.
Detailed Description
In order to better understand the invention, the contents of the invention are further clarified below with reference to examples to embody the functions of the invention. However, the present invention is not limited to the following examples.
Example 1: a sewage combined treatment device comprises a pretreatment tank 6, a mixing tank 1, a high-density flocculation tank 2, a sedimentation tank 3, a filtration tank 4 and an aeration tank 5 in sequence along the sewage treatment direction, wherein the mixing tank 1) is provided with a water inlet pipe, and one side of the aeration tank 5 is provided with a water outlet pipe; the utility model discloses a river course is in the pretreatment tank 6 from river course center extraction water source, buffer pool 6 promotes to mixing tank 1 by the immersible pump after carrying out the preliminary treatment, effect and coagulant PAC intensive mixing through the rapid stirrer in the mixing tank 1, then get into the high-density flocculation basin of high-density structure, its inside frame stirring rake that is provided with the draft tube, the promotion effect through the mixer, carry out the manifold cycles in the draft tube, with coagulant aid PAM intensive mixing, produce flocculent alum blossom, then overflow to in sedimentation tank 3, sedimentation tank 3 is the inclined plate sedimentation tank, when passing through the inclined plate sedimentation tank, there is sufficient hydraulic retention time, utilize water laminar flow principle, rivers flow in the pipe, flocculate is subsided to the pipe wall inboard because of its dead weight reason, after a period of use, need wash the pipe chute. Most organic suspended impurities in the settled sewage are removed, and then the sewage overflows into a filtering tank 4, a filtering frame 11 is arranged in the filtering tank 4, a water pipe for pumping and filtering water is arranged in the filtering frame 11, the water is pumped into an aeration tank, and the SS (suspended solid) of the effluent passing through the fiber filter cloth can be reduced to 10 mg/L. Finally, the dissolved oxygen can be rapidly and effectively increased in water by aerating the water body through the aeration tank 5 before water outlet. Sludge generated by sedimentation in the inclined plate sedimentation tank and activated sludge dropped from the filter cloth in the filter tank partially flow back to the mixing tank through the sewage pump to be circulated and used as an attachment point for coagulation of a flocculating constituent, and most of the sludge is compressed and discharged.
A plurality of layers of stirring paddles 7 are arranged in the mixing tank 1 to mix the added medicine; the high-density flocculation tank 2 is provided with a frame type stirring paddle 8 and a guide cylinder 9.
The sedimentation tank 3 is a sloping plate sedimentation tank, the middle part of the sedimentation tank is provided with a sloping plate area, the bottom of the sedimentation tank is conical, and the conical bottom is provided with a sludge suction pipe for regularly cleaning sludge and returning part of sludge at the bottom of the sedimentation tank to the mixing tank.
A filter frame 11 is arranged in the filter tank 4, fiber filter cloth is arranged on the periphery and the bottom of the filter frame 11, sewage overflows from the sedimentation tank and enters the outside of the filter frame, a water pumping pipe is arranged in the filter frame, and the water pumping pipe pumps the sewage penetrating through the filter frame into the aeration tank; the bottom and the periphery of the filter frame are provided with backwashing devices 12 for periodically cleaning the filter cloth, and the bottom of the filter tank 4 is provided with a sludge suction pipe for periodically cleaning sludge and returning a part of the sludge at the bottom of the sedimentation tank to the mixing tank.
When the water treatment device disclosed by the invention is used for treating river sewage, the dosage of the medicament can be reduced by at least 1/4, the SS (suspended solid) can be reduced to below 10mg/L, and the treated water quality reaches the first-level standard.
Finally, it should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A sewage combined treatment device comprises a mixing tank (1), a high-density flocculation tank (2), a sedimentation tank (3), a filter tank (4) and an aeration tank (5) in sequence along a sewage treatment direction, wherein the mixing tank (1) is provided with a water inlet pipe, and one side of the aeration tank (5) is provided with a water outlet pipe; the method is characterized in that: mix pond (1) and high-density flocculation basin (2) all be provided with the medicine pipeline, add PAC medicament in mixing the pond, add PAM medicament in high-density sedimentation tank, with partly mud backward flow to mixing pond (1) of sedimentation tank (3) bottom.
2. The integrated wastewater treatment plant according to claim 1, wherein: a pretreatment tank (6) is arranged in front of the mixing tank to pretreat the sewage, and a part of sludge at the bottom of the filtering tank (4) flows back to the mixing tank (1).
3. The integrated wastewater treatment plant according to claim 1, wherein: a plurality of layers of stirring paddles (7) are arranged in the mixing tank (1) to mix the added medicine; the high-density flocculation tank (2) is provided with a frame type stirring paddle (8) and a guide cylinder (9).
4. The integrated wastewater treatment plant according to any of claims 1-2, wherein: the sedimentation tank (3) is an inclined plate sedimentation tank, an inclined plate area is arranged in the middle of the sedimentation tank, the bottom of the sedimentation tank is conical, a sludge suction pipe is arranged at the bottom of the conical and used for regularly cleaning sludge, and a part of sludge at the bottom of the sedimentation tank is refluxed to the mixing tank.
5. The integrated wastewater treatment plant according to any of claims 1-2, wherein: a filter frame (11) is arranged in the filter tank (4), fiber filter cloth is arranged on the periphery and the bottom of the filter frame (11), sewage overflows from the sedimentation tank and enters the outside of the filter frame, a water pumping pipe is arranged in the filter frame, and the sewage penetrating through the filter frame is pumped into the aeration tank by a water pumping pipeline; the bottom and the periphery of the filter frame are provided with backwashing devices (12) for periodically cleaning the filter cloth, and the bottom of the filter tank (4) is provided with a sludge suction pipe for periodically cleaning sludge and returning a part of the sludge at the bottom of the sedimentation tank to the mixing tank.
6. A method for treating sewage by using the sewage combined treatment apparatus according to any one of claims 1 to 5, characterized in that: adding PAC into sewage through a mixing tank, uniformly mixing, then entering a high-density flocculation tank, adding a PAM medicament, adsorbing suspended particles in water, and playing a role in bridging among the particles to enable fine particles to form larger floccules, so that the sedimentation speed is accelerated in the period; then overflowing into a sedimentation tank to effectively remove coagulating impurities and sediments; overflowing into a filter tank after the precipitation is finished, effectively removing SS suspended matters in water, allowing the treated clear water to enter a clear water tank, and discharging after aeration and oxygenation; and returning a part of sludge at the bottom of the sedimentation tank to the mixing tank.
7. The method of treating wastewater according to claim 6, wherein: and a guide cylinder and stirring are adopted in the high-density flocculation tank for circulation, and the PAM auxiliary agent can be reduced by forming internal circulation through high-speed stirring.
8. The method of claim 6, wherein the settling is performed by inclined tube settling.
9. The method of treating wastewater according to claim 6, wherein: the filtering tank is internally filtered by a filtering frame surrounded by fiber filter cloth, sewage is filtered from the outside to the inside of the filtering frame, and the filtered water inside the filtering frame is delivered to the aeration tank through a water pumping pipe.
10. The method of treating wastewater according to claim 6, wherein: and returning a part of the sludge at the bottom of the filtering tank to the mixing tank for circular treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010216227.5A CN111285502A (en) | 2020-03-25 | 2020-03-25 | Sewage combined treatment equipment and treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010216227.5A CN111285502A (en) | 2020-03-25 | 2020-03-25 | Sewage combined treatment equipment and treatment method |
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| CN111285502A true CN111285502A (en) | 2020-06-16 |
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| CN202010216227.5A Pending CN111285502A (en) | 2020-03-25 | 2020-03-25 | Sewage combined treatment equipment and treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112811726A (en) * | 2020-12-31 | 2021-05-18 | 北京邦源环保科技股份有限公司 | Advanced sewage treatment device and application thereof |
| CN116535035A (en) * | 2023-05-05 | 2023-08-04 | 江苏科易达环保科技股份有限公司 | Photovoltaic power supply's water treatment system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| KR20050048548A (en) * | 2005-02-19 | 2005-05-24 | 김동진 | Waste water tretment process from food waste filtrates |
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| CN112811726A (en) * | 2020-12-31 | 2021-05-18 | 北京邦源环保科技股份有限公司 | Advanced sewage treatment device and application thereof |
| CN116535035A (en) * | 2023-05-05 | 2023-08-04 | 江苏科易达环保科技股份有限公司 | Photovoltaic power supply's water treatment system |
| CN116535035B (en) * | 2023-05-05 | 2024-05-14 | 江苏科易达环保科技股份有限公司 | Photovoltaic power supply's water treatment system |
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Application publication date: 20200616 |