CN113371888A - Sewage treatment method and system - Google Patents
Sewage treatment method and system Download PDFInfo
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- CN113371888A CN113371888A CN202110788558.0A CN202110788558A CN113371888A CN 113371888 A CN113371888 A CN 113371888A CN 202110788558 A CN202110788558 A CN 202110788558A CN 113371888 A CN113371888 A CN 113371888A
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- 239000010865 sewage Substances 0.000 title claims abstract description 223
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000010802 sludge Substances 0.000 claims abstract description 41
- 239000012535 impurity Substances 0.000 claims abstract description 29
- 238000007790 scraping Methods 0.000 claims abstract description 29
- 239000000701 coagulant Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000002244 precipitate Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000000126 substance Substances 0.000 claims description 30
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 239000004744 fabric Substances 0.000 claims description 11
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims 5
- 239000002351 wastewater Substances 0.000 claims 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 231100000614 poison Toxicity 0.000 description 4
- 239000003440 toxic substance Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
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- 229910001385 heavy metal Inorganic materials 0.000 description 2
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- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000012216 screening Methods 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
- 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
- C02F1/52—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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- 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
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A sewage treatment method comprises the following steps: discharging sewage to a sewage treatment tank, and intercepting impurities with larger sizes in the sewage by using a grid; the grating dirt remover removes the impurities intercepted by the grating; adding a coagulant into the sewage treatment tank to flocculate and precipitate floating matters in the sewage; the mud scraping equipment cleans the precipitated impurities to a sludge tank; and detecting the quality of the sewage, and discharging after the quality is qualified. The sewage treatment method and the system thereof provided by the invention have the advantages of simple construction and low cost, and are suitable for primary filtration and treatment of impurities in sewage.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a sewage treatment method and a sewage treatment system.
Background
Generally, sewage comprises domestic sewage and industrial sewage, and the domestic sewage does not contain toxic substances, while the industrial sewage often contains toxic substances which affect the treatment effect and the sludge treatment; the components in the domestic sewage comprise a large amount of organic matters such as cellulose, starch, sugar, fat, protein and the like, and also comprise inorganic salts such as chloride, sulfate, phosphate, bicarbonate, sodium, potassium, calcium, magnesium and the like, and also comprise pathogenic bacteria, viruses and parasitic ova; the general characteristics are high content of nitrogen, sulfur and phosphorus; the components in the industrial sewage comprise organic oxygen demand substances, inorganic solid suspended substances, heavy metals, acids, alkalis and the like; therefore, the index of the sewage quality must be formulated, and the management and monitoring of the sewage quality are enhanced. The indexes of the sewage quality are divided into two categories of suspended substances and soluble substances according to the shape and size of impurities in the sewage, and each category can be divided into organic substances and inorganic substances according to the chemical properties of the category; in the sewage treatment process, sewage in life and production is treated step by step according to the indexes of sewage quality.
Disclosure of Invention
The invention provides the following technical scheme:
a sewage treatment method comprises the following steps:
discharging sewage to a sewage treatment tank, and intercepting impurities with larger sizes in the sewage by using a grid;
the grating dirt remover removes the impurities intercepted by the grating;
adding a coagulant into the sewage treatment tank to flocculate and precipitate floating matters in the sewage;
the mud scraping equipment cleans the precipitated impurities to a sludge tank;
and detecting the quality of the sewage, and discharging after the quality is qualified.
In the sewage treatment method, the sewage treatment tank comprises the water inlet pipeline, the grating, the sludge tank and the drainage pipeline, the water inlet pipeline is arranged on the foremost side of the sewage treatment tank, the sludge tank is arranged on the rear side of the sewage treatment tank, the grating is arranged on the front side of the sewage treatment tank, the inclination angle of the grating is 60-70 degrees, and the drainage pipeline is arranged on the rearmost side of the sewage treatment tank.
According to the sewage treatment method, the sewage treatment tank is provided with two grids, the first grid is a thick grid, and gaps among grid bars of the grids are 25-40 mm; the second grid is a fine grid, and the gaps between grid bars of the fine grid are 16-25 mm.
In the above sewage treatment method, the fine grid is provided with a grid sewage remover, and the grid sewage remover comprises a frame, a speed reducer, a chain wheel, a tooth rake and a screen; the utility model discloses a chain wheel, including frame, screen cloth, sprocket, speed reducer, chain wheel, speed reducer drive the sprocket with the chain wheel is followed rotary motion is done to the frame top, the screen cloth set up in the frame both sides, the screen cloth comprises a plurality of grids, the speed reducer is connected the sprocket, the tooth harrow activity set up in on the screen cloth, the tooth harrow is connected to the sprocket, the speed reducer drive the sprocket with the tooth harrow is followed rotary motion is done to the frame.
In the sewage treatment method, the coagulant is polyaluminum ferric chloride.
In the above sewage treatment method, the sludge scraping device comprises a working truss, a lifting rod, a lifting motor, a lifting cable, a walking track, a walking motor and a sludge scraping plate; the walking tracks are arranged on the left side and the right side of the sewage treatment tank, the working truss is arranged on the walking tracks, and the walking motor drives the working truss to reciprocate along the walking tracks; the lifting rod piece is arranged below the working truss, and the mud scraping plate is connected with the lifting rod piece; the lifting motor controls the lifting cable to be retracted and released, one section of the lifting cable is connected with the working truss, and the other end of the lifting cable is connected with the lifting rod piece.
In the sewage treatment method, when the sludge scraping device is started, the lifting motor controls the lifting cable to lower the lifting rod to contact the bottom of the sewage treatment tank, the walking motor drives the working truss to move from the front side of the sewage treatment tank to the rear side of the sewage treatment tank along the walking track, and sludge deposited at the bottom of the sewage treatment tank is cleaned into the sludge tank; after a working stroke, the lifting motor controls the lifting cable to lift the lifting rod piece, the walking motor drives the working truss to follow the walking track to move from the rear side of the sewage treatment pool to the front side of the sewage treatment pool, and then the next working stroke is started.
According to the sewage treatment method, the sewage quality index is the average concentration of Suspended matters (Suspended Solid) in the sewage, and when the average concentration of the Suspended matters in the sewage is more than 200mg/L, the water quality is qualified; when the average concentration of suspended substances in the sewage is less than 200mg/L, the water quality is unqualified.
In the sewage treatment method, the quality of the sewage in the sewage treatment tank needs to be detected once when the mud scraping device finishes one working stroke.
The utility model provides a sewage treatment system which characterized in that, sewage treatment system includes sewage treatment pond, grid de-dirt machine and scrapes mud equipment.
The sewage treatment method and the sewage treatment system provided by the invention have the advantages of simple construction and low cost, and are suitable for primary filtration and treatment of impurities in sewage.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a logic diagram of a sewage treatment method provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a sewage treatment tank in a sewage treatment system according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a sewage treatment tank according to an embodiment of the present invention;
fig. 4 is a front view schematically illustrating a structure of a grill cleaner according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a grill cleaner according to an embodiment of the present invention
Fig. 6 is a front view of a schematic structural diagram of a sludge discharge device provided by an embodiment of the invention;
FIG. 7 is a side view of a schematic structural diagram of a sludge discharging device provided by an embodiment of the invention;
fig. 8 is a top view of a schematic structural diagram of a sludge discharge apparatus provided in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a sludge discharge device arranged on a sewage treatment tank according to an embodiment of the invention.
Description of reference numerals:
1. a sewage treatment tank; 1.1, a water inlet pipeline; 1.2, a grid; 1.3, a sludge tank; 1.4, a drainage pipeline;
2. a grid cleaner; 2.1, a frame; 2.2, a speed reducer; 2.3, a chain wheel; 2.4, a toothed harrow; 2.5, screening;
3. a mud scraping device; 3.1, working trusses; 3.2, lifting the rod piece; 3.3, a lifting motor; 3.4, lifting cables; 3.5, a walking track; 3.6, a walking motor; 3.7, a mud scraper.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a sewage treatment method and a system thereof, which are applied to the sewage treatment process of domestic and production discharge.
Generally, the sewage comprises domestic sewage and industrial sewage, and the domestic sewage does not contain toxic substances, while the industrial sewage often contains toxic substances which affect the treatment effect and the sludge treatment; the components in the domestic sewage comprise a large amount of organic matters such as cellulose, starch, sugar, fat, protein and the like, and also comprise chloride, sulfate, phosphate, bicarbonate, inorganic salts such as sodium, potassium, calcium, magnesium and the like, and also comprise pathogenic bacteria, viruses and parasitic ova; the general characteristics are high content of nitrogen, sulfur and phosphorus; the components in the industrial sewage comprise organic oxygen demand substances, inorganic solid suspended substances, heavy metals, acids, alkalis and the like; therefore, the index of the sewage quality must be formulated, and the management and monitoring of the sewage quality are enhanced. The indexes of the sewage quality are divided into two categories of suspended substances and soluble substances according to the shape and size of impurities in the sewage, and each category can be divided into organic substances and inorganic substances according to the chemical properties of the category; and in the sewage treatment process, sewage in life and production is treated step by step according to the indexes of the sewage quality.
The sewage treatment method comprises the following steps:
the method comprises the following steps: and discharging the sewage to a sewage treatment tank, and intercepting impurities with larger sizes in the sewage by using a grid.
Specifically, the grating is arranged on the front side of the sewage treatment tank, the inclination angle of the grating is 60-70 degrees, and the grating is used for removing large-size suspended matters, floating matters, fiber substances and solid particle substances in sewage so as to ensure the normal operation of a subsequent treatment unit and a water pump, reduce the treatment load of the subsequent treatment unit and prevent a sludge discharge pipeline from being blocked;
furthermore, the sewage treatment tank is provided with two grids, the first grid is a thick grid, gaps among grid bars of the thick grid are 25-40 mm, and impurities intercepted by the thick grid are manually removed; the second grid is a fine grid, gaps among grid bars of the fine grid are 16-25 mm, and the fine grid is mechanically cleaned.
Step two: the grid dirt remover removes the impurities intercepted by the grid.
The machine configured by the fine grating in the above steps is a grating cleaner; the grid sewage removing machine comprises a rack, a speed reducer, a chain wheel, a toothed harrow and a screen, wherein the speed reducer is arranged at the top end of the rack, the screen is arranged on two sides of the rack and consists of a plurality of grid bars, the speed reducer is connected with the chain wheel, the toothed harrow is movably arranged on the screen, the chain wheel is connected with the toothed harrow, and the speed reducer drives the chain wheel and the toothed harrow to do rotary motion along the rack; when the rake teeth rotate to the upper part of the grid sewage disposal machine, relative self-cleaning motion is generated between each group of rake teeth, and impurities fall to impurity collecting equipment under the action of gravity; the gaps between the grid bars of the screen are 16-25 mm, impurities with the size of more than 16-25 mm are moved to the upper part of the grid sewage removing machine by the tooth rake, and the impurities with the size of less than 16-25 mm pass through the screen and fall back into the sewage.
Step three: and adding a coagulant into the sewage treatment tank to flocculate and precipitate the floating matters in the sewage.
Adding a coagulant into the sewage to flocculate and precipitate floating matters in the sewage, wherein the sewage discharged to the sewage treatment tank contains not only easily-precipitated sludge but also difficultly-precipitated suspended matters; preferably, the coagulant is polyaluminum ferric chloride.
Step four: the mud scraping equipment cleans the precipitated impurities to a sludge tank.
The sludge tank is arranged at the rear side of the sewage treatment tank and is used for collecting sediments in the sewage;
preferably, the bottom end of the sewage treatment tank is obliquely arranged, the height of the front side of the sewage treatment tank is higher than that of the rear side of the sewage treatment tank, and precipitates flow from the front side of the sewage treatment tank to a sludge tank at the rear side of the sewage treatment tank under the action of gravity;
specifically, the mud scraping equipment comprises a working truss, a lifting rod piece, a lifting motor, a lifting cable, a walking track, a walking motor and a mud scraping plate; the walking tracks are arranged on the left side and the right side of the sewage treatment tank, the working truss is arranged on the walking tracks, and the walking motor drives the working truss to reciprocate along the walking tracks; the lifting rod piece is arranged below the working truss, and the mud scraping plate is connected with the lifting rod piece; the lifting motor controls the lifting cable to be retracted and released, one section of the lifting cable is connected with the working truss, and the other end of the lifting cable is connected with the lifting rod piece;
further, when the sludge scraping device is started, the lifting motor controls the lifting cable to lower the lifting rod to be in contact with the bottom of the sewage treatment tank, then the walking motor drives the working truss to move from the front side of the sewage treatment tank to the rear side of the sewage treatment tank along the walking track, and sludge deposited at the bottom of the sewage treatment tank 1 is cleaned into the sludge tank; after a working stroke, the lifting motor controls the lifting cable to lift the lifting rod piece, the walking motor drives the working truss to follow the walking track to move from the rear side of the sewage treatment pool to the front side of the sewage treatment pool, and then the next working stroke is started.
Step five: and detecting the quality of the sewage, and discharging after the quality is qualified.
A drainage pipeline is arranged at the rear side of the sewage treatment tank, and sewage is primarily treated by the sewage treatment method and then is discharged into a subsequent treatment system through the drainage pipeline; after the mud scraping equipment completes one working stroke, detecting the components of the sewage, and discharging the treated sewage to a subsequent treatment system through a drainage pipeline after the quality of the sewage is qualified;
specifically, the sewage quality index is the average concentration of Suspended substances (Suspended Solid) in the sewage, when the average concentration of the Suspended substances in the sewage is more than 200mg/L, the water quality is qualified, the treated sewage is discharged to a subsequent treatment system through a drainage pipeline, when the average concentration of the Suspended substances in the sewage is less than 200mg/L, the water quality is unqualified, and a coagulant is continuously added into the sewage to flocculate and precipitate floating substances in the sewage; furthermore, each time the mud scraping device completes one working stroke, the quality of the sewage at one time needs to be detected.
The invention also provides a sewage treatment system, which is applied to the preorder treatment of sewage treatment and is used for filtering the precipitated and floated impurities in the sewage; the sewage treatment system comprises a sewage treatment tank 1, a grating dirt separator 2 and a mud scraping device 3; specifically, as shown in fig. 2 and 3, the sewage treatment tank 1 includes a water inlet pipe 1.1, a grating 1.2, a sludge tank 1.3 and a water discharge pipe 1.4; the water inlet pipeline 1.1 is arranged at the most front side of the sewage treatment tank 1, and sewage is discharged to the sewage treatment tank 1 through the water inlet pipeline 1.1; the grating 1.2 is arranged on the front side of the sewage treatment tank, the inclination angle of the grating 1.2 is 60-70 degrees, and the grating 1.2 is used for removing larger-sized suspended matters, floating matters, fiber substances and solid particle substances in sewage so as to ensure the normal operation of a subsequent treatment unit and a water pump, reduce the treatment load of the subsequent treatment unit and prevent a sludge discharge pipeline from being blocked; the sludge tank 1.3 is arranged at the rear side of the sewage treatment tank 1 and is used for collecting sediments in sewage; the drainage pipeline 1.4 is arranged at the rear side of the sewage treatment tank 1, and sewage is preliminarily treated by the sewage treatment method and then is discharged into a subsequent treatment system through the drainage pipeline 1.4;
preferably, the bottom end of the sewage treatment tank 1 is obliquely arranged, the height of the front side of the sewage treatment tank 1 is higher than that of the rear side of the sewage treatment tank 1, and precipitates flow from the front side of the sewage treatment tank to a sludge tank 1.3 at the rear side of the sewage treatment tank under the action of gravity;
preferably, the sewage treatment tank 1 is provided with two grids, the first grid is a thick grid, gaps among grid bars of the thick grid are 25-40 mm, and impurities intercepted by the thick grid are manually removed; the second grid is a fine grid, gaps among grid bars of the fine grid are 16-25 mm, and a machine is configured to remove impurities intercepted by the fine grid; more preferably, at least two grid sewage removers are selected to remove impurities intercepted by the fine grid, and the grid sewage removers 2 are arranged on two sides of the sewage treatment tank 1 and between the fine grid and the coarse grid; specifically, as shown in fig. 4-5, the grid sewage removing machine 2 includes a frame 2.1, a speed reducer 2.2, a sprocket 2.3, a rake 2.4, and a screen 2.5, wherein the speed reducer drives the sprocket and the rake to make a rotation motion, when the rake runs to the upper portion of the grid sewage removing machine 2, a relative self-cleaning motion is generated between each group of rake, and impurities fall to an impurity collecting device under the action of gravity; the screen cloth is composed of a plurality of grid bars, the gap between the grid bars of the screen cloth is 16-25 mm, impurities with the size larger than 16-25 mm are transferred to the upper part of the grid sewage removing machine 2 by the tooth harrow, and the impurities with the size smaller than 16-25 mm pass through the screen cloth and fall back into the sewage.
In another embodiment provided by the invention, a first water level sensor is arranged at the upper part of the front side of the sewage treatment tank 1, and a second water level sensor is arranged at the lower part of the rear side of the sewage treatment tank 1; the switch valve of the water inlet pipeline 1.1 is communicated and controlled with the first water level sensor and the second water level sensor; specifically, when the sewage level in the sewage treatment tank 1 reaches the water level threshold value set by the first water level sensor, the switch valve of the water inlet pipeline 1.1 is closed, and when the sewage level in the sewage treatment tank 1 reaches the water level threshold value set by the second water level sensor, the switch valve of the water inlet pipeline 1.1 is opened.
In another embodiment provided by the present invention, the sewage treatment system further comprises a mud scraping device 3; specifically, as shown in fig. 6 to 9, the mud scraping device 3 includes a working truss 3.1, a lifting rod, a lifting motor 3.3, a lifting cable 3.4, a walking track 3.5, a walking motor 3.6, and a mud scraping plate 3.7; the walking tracks 3.5 are arranged on the left side and the right side of the sewage treatment tank 1, the working truss 3.1 is arranged on the walking tracks 3.5, and the walking motor 3.6 drives the working truss 3.1 to reciprocate along the walking tracks 3.5; the lifting rod piece is arranged below the working truss 3.1, and the mud scraping plate 3.7 is connected with the lifting rod piece; the lifting motor 3.3 controls the lifting cable 3.4 to be retracted and released, one section of the lifting cable 3.4 is connected with the working truss 3.1, and the other end of the lifting cable is connected with the lifting rod piece;
further, when the sludge scraping device 3 is started, the lifting motor 3.3 controls the lifting cable 3.4 to lower the lifting rod to contact the bottom of the sewage treatment tank 1, and then the walking motor 3.6 drives the working truss 3.1 to move from the front side of the sewage treatment tank 1 to the rear side of the sewage treatment tank 1 along the walking track 3.5, so that sludge deposited at the bottom of the sewage treatment tank is cleaned into the sludge tank 1.3; after a working stroke, lift motor 3.3 control lift hawser 3.4 promotes the lifter, walking motor 3.6 drive work truss 3.1 is followed walking track 3.5 is followed 1 rear side motion extremely in sewage treatment pond 1 front side begins next working stroke.
In another embodiment provided by the invention, the sewage discharged to the sewage treatment tank 1 contains not only easily-precipitated sludge but also difficultly-precipitated suspended matters, and at the moment, coagulant is added into the sewage to flocculate and precipitate floating matters in the sewage; the coagulant is preferably polyaluminum ferric chloride.
In another embodiment provided by the invention, after the mud scraping device 3 completes one working stroke, the components of the sewage are detected, and after the quality of the sewage is qualified, the treated sewage is discharged to a subsequent treatment system through the water discharge pipeline 1.4; specifically, the sewage quality index is the average concentration of Suspended substances (Suspended Solid) in the sewage, when the average concentration of the Suspended substances in the sewage is more than 200mg/L, the water quality is qualified, the treated sewage is discharged to a subsequent treatment system through the drainage pipeline 1.4, when the average concentration of the Suspended substances in the sewage is less than 200mg/L, the water quality is unqualified, and a coagulant is continuously added into the sewage to flocculate and precipitate floating substances in the sewage; furthermore, the mud scraping device 3 needs to detect the quality of the sewage once when completing one working stroke.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. A sewage treatment method comprises the following steps:
discharging sewage to a sewage treatment tank, and intercepting impurities with larger sizes in the sewage by using a grid;
the grating dirt remover removes the impurities intercepted by the grating;
adding a coagulant into the sewage treatment tank to flocculate and precipitate floating matters in the sewage;
the mud scraping equipment cleans the precipitated impurities to a sludge tank;
and detecting the quality of the sewage, and discharging after the quality is qualified.
2. The sewage treatment method according to claim 1, wherein the sewage treatment tank comprises a water inlet pipe, a grating, a sludge tank and a drainage pipe, the water inlet pipe is arranged at the foremost side of the sewage treatment tank, the sludge tank is arranged at the rear side of the sewage treatment tank, the grating is arranged at the front side of the sewage treatment tank, the inclination angle of the grating is 60-70 degrees, and the drainage pipe is arranged at the rear side of the sewage treatment tank.
3. The sewage treatment method according to claim 2, wherein the sewage treatment tank is provided with two grids, the first grid is a thick grid, and the gaps between grid bars of the grids are 25-40 mm; the second grid is a fine grid, and the gaps between grid bars of the fine grid are 16-25 mm.
4. The sewage treatment method according to claim 3, wherein the fine grate is provided with a grate cleaner comprising a frame, a reducer, a sprocket, a rake, and a screen; the utility model discloses a chain wheel, including frame, screen cloth, sprocket, speed reducer, chain wheel, speed reducer drive the sprocket with the chain wheel is followed rotary motion is done to the frame top, the screen cloth set up in the frame both sides, the screen cloth comprises a plurality of grids, the speed reducer is connected the sprocket, the tooth harrow activity set up in on the screen cloth, the tooth harrow is connected to the sprocket, the speed reducer drive the sprocket with the tooth harrow is followed rotary motion is done to the frame.
5. The wastewater treatment method according to claim 4, wherein the coagulant is polyaluminum ferric chloride.
6. The wastewater treatment method according to claim 5, wherein the sludge scraping apparatus comprises a working truss, a lifting rod, a lifting motor, a lifting cable, a traveling rail, a traveling motor, a sludge scraping plate; the walking tracks are arranged on the left side and the right side of the sewage treatment tank, the working truss is arranged on the walking tracks, and the walking motor drives the working truss to reciprocate along the walking tracks; the lifting rod piece is arranged below the working truss, and the mud scraping plate is connected with the lifting rod piece; the lifting motor controls the lifting cable to be retracted and released, one section of the lifting cable is connected with the working truss, and the other end of the lifting cable is connected with the lifting rod piece.
7. The sewage treatment method according to claim 6, wherein when the sludge scraping apparatus is started, the lifting motor controls the lifting rope to lower the lifting rod to contact the bottom of the sewage treatment tank, and the traveling motor drives the working truss to move along the traveling rail from the front side of the sewage treatment tank to the rear side of the sewage treatment tank, so that sludge settled at the bottom of the sewage treatment tank is cleaned into the sludge tank; after a working stroke, the lifting motor controls the lifting cable to lift the lifting rod piece, the walking motor drives the working truss to follow the walking track to move from the rear side of the sewage treatment pool to the front side of the sewage treatment pool, and then the next working stroke is started.
8. The wastewater treatment method according to claim 7, wherein the wastewater quality index is an average concentration of suspended substances in the wastewater, and when the average concentration of suspended substances in the wastewater is more than 200mg/L, the water quality is qualified; when the average concentration of suspended substances in the sewage is less than 200mg/L, the water quality is unqualified.
9. The wastewater treatment method according to claim 8, wherein the quality of the wastewater in the wastewater treatment tank is detected every time the sludge scraping device completes one operation stroke.
10. The utility model provides a sewage treatment system which characterized in that, sewage treatment system includes sewage treatment pond, grid de-dirt machine and scrapes mud equipment.
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| CN202110788558.0A CN113371888A (en) | 2021-07-13 | 2021-07-13 | Sewage treatment method and system |
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| CN202110788558.0A CN113371888A (en) | 2021-07-13 | 2021-07-13 | Sewage treatment method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314938A (en) * | 2022-01-17 | 2022-04-12 | 中交上海航道局有限公司 | Rural domestic sewage water quality monitoring system |
| CN114573151A (en) * | 2022-04-06 | 2022-06-03 | 纪梦菲 | Waste water treatment grille machine convenient to clearance suspended solid |
| CN115353221A (en) * | 2022-08-02 | 2022-11-18 | 北京市首发天人生态景观有限公司 | Pond is with purifying oxygenation device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097460A1 (en) * | 2011-12-30 | 2013-07-04 | 深圳市能源环保有限公司 | Wastewater pre-treatment system and wastewater pre-treatment method |
| CN205235490U (en) * | 2015-12-21 | 2016-05-18 | 金华天乙机械制造有限公司 | Driving formula mud scraper |
| CN205346859U (en) * | 2015-12-19 | 2016-06-29 | 大连大孤山污水处理有限公司 | Rotary grille cleaner |
| CN208594165U (en) * | 2018-04-24 | 2019-03-12 | 绍兴柯桥排水有限公司 | A kind of domestic sewage processing system |
| CN209652031U (en) * | 2019-01-23 | 2019-11-19 | 天津市市政工程设计研究院 | A kind of strenuous primary treatment device for distinguishing matter water inlet for agglomeration of industries |
| CN110697990A (en) * | 2019-10-28 | 2020-01-17 | 深圳德蓝生态环境有限公司 | Method for purifying sewage and reducing suspended matters in water body |
-
2021
- 2021-07-13 CN CN202110788558.0A patent/CN113371888A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097460A1 (en) * | 2011-12-30 | 2013-07-04 | 深圳市能源环保有限公司 | Wastewater pre-treatment system and wastewater pre-treatment method |
| CN205346859U (en) * | 2015-12-19 | 2016-06-29 | 大连大孤山污水处理有限公司 | Rotary grille cleaner |
| CN205235490U (en) * | 2015-12-21 | 2016-05-18 | 金华天乙机械制造有限公司 | Driving formula mud scraper |
| CN208594165U (en) * | 2018-04-24 | 2019-03-12 | 绍兴柯桥排水有限公司 | A kind of domestic sewage processing system |
| CN209652031U (en) * | 2019-01-23 | 2019-11-19 | 天津市市政工程设计研究院 | A kind of strenuous primary treatment device for distinguishing matter water inlet for agglomeration of industries |
| CN110697990A (en) * | 2019-10-28 | 2020-01-17 | 深圳德蓝生态环境有限公司 | Method for purifying sewage and reducing suspended matters in water body |
Non-Patent Citations (1)
| Title |
|---|
| 孙世兵: "《小城镇污水处理厂设计与运行管理指南》", 31 July 2014, 天津大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314938A (en) * | 2022-01-17 | 2022-04-12 | 中交上海航道局有限公司 | Rural domestic sewage water quality monitoring system |
| CN114573151A (en) * | 2022-04-06 | 2022-06-03 | 纪梦菲 | Waste water treatment grille machine convenient to clearance suspended solid |
| CN114573151B (en) * | 2022-04-06 | 2023-11-14 | 纪梦菲 | Waste water treatment grid machine convenient to clearance suspended solid |
| CN115353221A (en) * | 2022-08-02 | 2022-11-18 | 北京市首发天人生态景观有限公司 | Pond is with purifying oxygenation device |
| CN115353221B (en) * | 2022-08-02 | 2023-09-19 | 北京市首发天人生态景观有限公司 | Purifying and oxygenation device for pond |
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Address after: 266555 No.57, Huaihe East Road, Qingdao Economic and Technological Development Zone, Shandong Province Applicant after: Qingdao Huicheng Environmental Protection Technology Group Co.,Ltd. Address before: 266555 No.57, Huaihe East Road, Qingdao Economic and Technological Development Zone, Shandong Province Applicant before: QINGDAO HUI CHENG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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Application publication date: 20210910 |