CN112551811B - Sewage treatment system and sewage treatment process thereof - Google Patents
Sewage treatment system and sewage treatment process thereof Download PDFInfo
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- CN112551811B CN112551811B CN202011416683.0A CN202011416683A CN112551811B CN 112551811 B CN112551811 B CN 112551811B CN 202011416683 A CN202011416683 A CN 202011416683A CN 112551811 B CN112551811 B CN 112551811B
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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
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- 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
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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Abstract
The invention discloses a sewage treatment system, which comprises a sewage collecting tank, a primary filtering device, a pollutant adsorption tank and a disinfection tank which are arranged in sequence; a water delivery pipe is arranged between the sewage collecting tank and the input port of the primary filtering device; the water outlet of the primary filtering device is connected with the inlet of the pollutant adsorption tank; a filtering material is arranged in the pollutant adsorption tank; an adsorption area and a blocking area are sequentially arranged in the pollutant adsorption pool from an inlet to an outlet, and the sawdust, the coal and part of the building waste residue particles are mixed and then arranged in the adsorption area; the limestone particles and part of the construction waste residue particles are arranged in a blocking area, and the construction waste residue in the blocking area is positioned in gaps among the limestone particles; the disinfection tank is connected with the outlet of the pollutant adsorption tank. Through setting up pollutant adsorption tank and adsorbing the processing to the pollutant that easily produces the contaminated layer in the sewage, the sewage after having reduced the emission forms the contaminated layer on the river course.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a sewage treatment system and a sewage treatment process thereof.
Background
Sewage (sewage) is generally the effluent from life and production, which is contaminated to some extent, and which has lost its original function of use. The water is mixed with new substances or the water is deteriorated because of the change of external conditions, so that the original use function of the water cannot be maintained. The sewage mainly comprises domestic sewage, industrial wastewater and initial rainwater.
As urban domestic sewage is randomly discharged into a drainage ditch, serious water body pollution is caused, animals and plants in the water body disappear, the water body loses purification capacity, and the urban water body pollution is urgent. And the pollutants in the water body are easily adsorbed on the side parts of the river dykes and dams to form a white, white-like or gray pollution layer to influence the landscape of the river course, and when the water level of the river course is lower, the pollution layer on the vertical surfaces of the river dykes and dams is exposed to emit unpleasant odor. Through detection, the pollution layer contains high content of heavy metal elements such as cadmium, mercury, lead, chromium, arsenic, nickel, copper, zinc, cyanide and the like, and also contains toxic and harmful substances such as parasitic ova, pathogenic bacteria, organic pollutants and the like, and the removed pollution layer belongs to one of the dangerous solid wastes regulated by the state.
In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.
Disclosure of Invention
The invention mainly aims to provide a sewage treatment system and a sewage treatment process thereof, which have the characteristics of adsorbing sewage before being discharged into a river channel in advance and reducing a pollution layer formed by adsorption on a dam facade of the river channel.
In order to achieve the above purpose, the solution of the invention is:
a sewage treatment system comprises a sewage collecting tank, a primary filtering device, a pollutant adsorption tank and a disinfection tank which are arranged in sequence; a water delivery pipe is arranged between the sewage collecting tank and the input port of the primary filtering device;
the water outlet of the primary filtering device is connected with the inlet of the pollutant adsorption tank; the pollutant adsorption tank is internally provided with a filtering material, and the filtering material comprises sawdust, building waste residue particles, crushed coal and crushed limestone particles with the particle size of 50-100 mm; the particle size of the building waste residue particles is 5-25 mm; an adsorption area and a blocking area are sequentially arranged in the pollutant adsorption pool from an inlet to an outlet, and the sawdust, the coal and part of the building waste residue particles are mixed and then arranged in the adsorption area; the limestone particles and part of the building waste slag particles are arranged in the blocking area, and the building waste slag in the blocking area is positioned in gaps among the limestone particles; the disinfection tank is connected with the outlet of the pollutant adsorption tank.
Further, the sewage treatment system is provided with at least three pollutant adsorption tanks which are arranged in parallel, wherein one pollutant adsorption tank replaces the filtering material, and at least one pollutant adsorption tank can receive the sewage treated by the primary filtering device; and the other pollutant adsorption tanks are in a standing adsorption state.
Further, a plurality of pollutant adsorption tanks are sequentially connected in series, the pollutant adsorption tank at the head end is connected with the water outlet of the primary filtering device, and the pollutant adsorption tank at the tail end is connected with the disinfection tank.
Further, the preliminary filtering device comprises a fixed seat and a plurality of layers of horizontally arranged filter screen assemblies arranged on the frame body, wherein the upper part of the fixed seat is provided with a water inlet opening, and the side part of the fixed seat is provided with a plurality of slag outlets from top to bottom; each filter screen assembly comprises a filter screen belt and a rotating roller, and the filter screen belt is wound on the rotating roller; the filter screen components are arranged at intervals from top to bottom in sequence, and the mesh number of the filter screen belts of the filter screen components from top to bottom is increased in sequence; the outlet of the water delivery pipe of the sewage collecting tank is arranged above the uppermost filter screen assembly; each filter screen component is suspended outside the slag outlet, and the upper surface of each filter screen belt moves from the inner cavity of the fixed seat to the direction of the slag outlet; a slag removing brush which is contacted with the lower surface of the filter screen belt is arranged below each slag outlet; the lower end of the fixed seat is provided with a water outlet.
Further, the deslagging brush is provided with a brush seat fixed on the fixed seat and a brush head detachably arranged on the brush seat, a propping and limiting seat is arranged in the brush seat, a spring is arranged at the bottom of the propping and limiting seat, the brush head is clamped on the fixed seat, and the propping and limiting seat is used for propping the brush head towards the direction of the filter screen belt under the action of the spring; the brush head is provided with a T-shaped clamping seat, the brush seat is provided with a T-shaped clamping groove, and the T-shaped clamping seat is clamped on the T-shaped clamping groove.
Further, a hydrolysis acidification tank and a biological contact oxidation tank are arranged between the pollutant adsorption tank and the disinfection tank.
Furthermore, a collecting pool for collecting the solid wastes counted by the corresponding deslagging brushes is arranged on the outer wall of the fixed seat below each deslagging brush.
Furthermore, a collecting tank for collecting the solid wastes counted by the deslagging brushes is arranged on the outer wall of the fixed seat below the deslagging brush at the lowest part; and a detachable door plate is arranged on the collecting tank.
Further, the rotating rollers comprise a driving roller, a driven roller and two supporting rollers arranged in the middle of the filter screen belt, and the driving roller, the driven roller and the supporting rollers are all arranged on the fixed seat in a parallel rotating mode; all the driving rollers are arranged on the same side; all the driving rollers are provided with chain wheels, and two adjacent driving rollers are connected through chains; and the fixed seat is also provided with a driving motor for driving the driving roller to rotate.
Furthermore, all the driving rollers are wound on the same chain; and a tension chain wheel is arranged between two adjacent driving rollers.
Further, a rotational flow device is formed at the lower end of the fixed seat and comprises an inclined plane arranged at the bottom of an inner cavity of the fixed seat, a rotational flow pipe communicated with the lowest point of the inclined plane and a lower water barrel communicated with an outlet of the rotational flow pipe; the water outlet of the primary filtering device is formed in the middle of the lower end of the lower water barrel; the height from the inlet to the outlet of the cyclone tube is gradually reduced.
Further, the inclined surface has a first inclined surface and a second inclined surface, and the swirl pipe has a first swirl pipe and a second swirl pipe.
Furthermore, a generator is arranged in a water outlet of the primary filtering device, a rotating shaft of the generator is provided with a generating blade which can rotate under the impact of water flow, the generator is connected with a storage battery, and the storage battery is connected with a driving motor; the driving motor is also connected with a controller used for controlling the driving motor to rotate.
A sewage treatment process comprises the following steps:
(1) collecting sewage: collecting sewage into a sewage collecting tank through a pipe network;
(2) filtering and removing slag; deslagging sewage input from the sewage collecting tank by adopting a primary filtering device, and removing solid wastes in the sewage;
(3) multi-stage adsorption; adsorbing the sewage after filtering and deslagging by adopting a pollutant adsorption tank; the pollutant adsorption tank is internally provided with a filtering material, and the filtering material comprises sawdust, building waste residue particles, crushed coal and crushed limestone particles with the particle size of 50-100 mm; the particle size of the building waste residue particles is 5-25 mm; an adsorption area and a blocking area are sequentially arranged in the pollutant adsorption pool from an inlet to an outlet, and the sawdust, the coal and part of the building waste residue particles are mixed and then arranged in the adsorption area; the limestone particles and part of the construction waste residue particles are arranged in a blocking area, and the construction waste residue in the blocking area is positioned in gaps among the limestone particles; after the pollutant adsorption tank is used for a period of time, replacing new concerned materials, and using the replaced filter materials for producing sintered bricks;
(4) and (4) disinfecting and discharging, namely disinfecting the water treated in the pollutant adsorption tank through the disinfection tank, and discharging after detection.
After adopting the structure, the invention relates to a sewage treatment system and a sewage treatment process thereof, wherein the sewage treatment system comprises the following steps:
1. a primary filtering device is adopted to carry out primary filtering on solid pollutants in the sewage, such as paper scraps, leaves, plastic sheet bottles, zip-top cans and other sundries; adsorbing the sewage subjected to primary filtration by using a pollution adsorption tank, wherein pollutants in the sewage which are easily adsorbed on a dam and a river bed are adsorbed by sawdust, building waste residues and crushed coal, and a pollution layer is formed on the surface of a filtering material in an adsorption area; the blocking area plays a role in further adsorbing pollutants, and simultaneously blocks and supports the filtering material of the adsorption area. Therefore, pollutants in the sewage treated by the pollutant adsorption tank are greatly reduced, and the sewage treated by the disinfection tank is not easy to form a pollution layer in a river channel.
2. The sewage after the pollutant adsorption tank is treated can be treated through the hydrolysis acidification tank and the biological contact oxidation tank according to the sewage condition before the disinfection tank, so that the discharged sewage meets the discharge standard.
3. The pollutant adsorption tank carries out periodic replacement of the filtering material, the filtering material under replacement is used for manufacturing the baked brick, so that a pollution layer adsorbed on the filtering material is treated in the sintering process, waste residues generated after incineration of the pollution layer and other raw materials of the baked brick are used as the raw materials of the baked brick, the pollution layer is properly treated, and the environmental pollution is reduced.
4. Through setting up the filter screen subassembly of multilayer and top-down the mesh number crescent of filter screen, like this, follow carry in the sewage collecting pit to solid waste can be carried out the separation by multilayer filter screen subassembly in preliminary filter equipment's the sewage, and wherein great solid waste can the separation on the upper strata, and less solid waste can the separation at the upper surface of the filter screen subassembly of lower floor.
5. The solid waste collected to the upper surface of the filter screen assembly is conveyed out of the slag outlet along with the rotation of the filter screen belt on the rotating roller and then is brushed off by the slag removing brush. The brushed solid wastes can be independently collected through the collecting pools which correspond to the filter screen components one by one, or the brushed solid wastes on all the filter screen components can be collected through one large collecting pool and then are moved out at the same time; the solid waste with recovery value in the collecting tank is recovered and treated, and the solid waste which can be incinerated is sent to an incinerator for producing the baked bricks for treatment.
6. The rotational flow device enables the speed of water flow from top to bottom to be increased, so that sediment deposition at the bottom of the inner cavity of the fixing seat can be reduced, and meanwhile, the power generation blades can be driven to rotate at a high speed due to the increase of the speed of the water flow, so that the power generator generates power. The generated electric energy can be stored by the storage battery and can be used for the intermittent operation of the driving motor.
7. The driving roller is driven by the driving motor through the chain, so that the number of the motors is reduced, and the structure of the device is more compact.
Compared with the prior art, the pollutant adsorption tank is arranged to adsorb pollutants which are easy to generate a pollution layer in sewage, so that the formation of the pollution layer on a river channel by the discharged sewage is reduced, and the influence of peculiar smell of the river channel and the attractiveness of the river channel is reduced.
Drawings
FIG. 1 is a schematic flow chart of a water treatment apparatus according to the present invention.
Fig. 2 is a perspective view of the preliminary filtering device and the pollutant adsorption tank in the present invention.
FIG. 3 is a cross-sectional view of a preliminary filtering apparatus of the present invention.
FIG. 4 is a cross-sectional view of another perspective primary filter arrangement according to the present invention.
Fig. 5 is a schematic structural view of a deslagging brush in the invention.
Fig. 6 is an exploded view of the deslagging brush of the present invention.
Fig. 7 is a partial view of a preliminary filtering apparatus.
FIG. 8 is a schematic view of a sprocket drive assembly.
Fig. 9 is a schematic view of a pollutant adsorption tank structure.
FIG. 10 is a flow chart of the steps of a wastewater treatment process.
In the figure:
a sewage collection tank 100; a hydrolysis acidification tank 200; a biological contact oxidation pond 300;
a disinfection tank 400; a preliminary filtering device 1; a fixed seat 11; a screen assembly 12;
a chain 13; a drive motor 14; a swirling device 15; a generator 16; the power generation blades 17;
a water inlet opening 111; a slag outlet 112; a water outlet 113; a collection tank 114;
a door panel 115; an inclined surface 116; swirl tube 117; a launch canister 118;
a filter mesh belt 121; a rotating roller 122; a first inclined surface 1161; a second inclined surface 1162;
a first swirl tube 1171; a second swirl tube 1172; a drive roller 1221; a driven roller 1222;
a support roller 1223; a sprocket 1224; a tension sprocket 1225; a water delivery pipe 2; a deslagging brush 3;
a brush holder 31; a brush head 32; abutting against the limiting seat 311; a spring 312;
a T-shaped card slot 313; a T-shaped card holder 321; a pollutant adsorption tank 4;
an adsorption zone 41; a blocking region 42.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by the specific embodiment.
As shown in fig. 1 to 3, a sewage treatment system according to the present invention includes a sewage collecting tank 100, a primary filtering device, a pollutant adsorbing tank 4, and a sterilizing tank 400, which are arranged in sequence; a water delivery pipe 2 is arranged between the sewage collecting tank 100 and the input port of the primary filtering device; the water outlet 113 of the primary filtering device is connected with the inlet of the pollutant adsorption tank 4; a filtering material is arranged in the pollutant adsorption tank 4, and the filtering material comprises sawdust, building waste residue particles, crushed coal and crushed limestone particles with the particle size of 50-100 mm; the particle size of the building waste residue particles is 5-25 mm; an adsorption area 41 and a blocking area 42 are sequentially arranged in the pollutant adsorption pool from an inlet to an outlet, and the sawdust, the coal and part of the building waste residue particles are mixed and then arranged in the adsorption area 41; the limestone particles and part of the construction waste slag particles are arranged in the blocking area 42, and the construction waste slag in the blocking area 42 is positioned in gaps among the limestone particles; the sterilizing tank 400 is connected to an outlet of the pollutant adsorbing tank 4.
Through pollutant adsorption tank 4 carries out periodic replacement filtering material, and filtering material under the replacement is used for making the baked brick, so adsorb the contaminated layer on filtering material and handle in sintering process, and the waste residue after the contaminated layer burns is regarded as the component material of baked brick together with other baked brick raw materials, has properly handled the contaminated layer, has reduced environmental pollution.
Preferably, the mass ratio of the sawdust (dry weight), the construction waste slag particles, the coal and the limestone particles is 10; the upper portion of the filter material stack in the blocking region 42 is higher than the upper portion of the filter material stack in the adsorption region 41. Preferably, the height of the blocking area 42 is 0.8-1 m, the height of the adsorption area 41 is 0.6-0.8 m, and the water surface of the pollutant adsorption tank 4 does not reach the top of the filter material in the adsorption area 41.
Preferably, as shown in fig. 9, the bottom of the adsorption area 41 of the pollutant adsorption tank 4 has a gradient with a gradually higher height from the inlet to the outlet, so as to facilitate the adsorption of pollutants in the sewage. In addition, a hydrolysis acidification tank 200 and a biological contact oxidation tank 300 are arranged between the pollutant adsorption tank 4 and the disinfection tank 400.
Preferably, the sewage treatment system is provided with at least three pollutant adsorption tanks 4 which are arranged in parallel, wherein one pollutant adsorption tank 4 replaces the filtering material, and at least one pollutant adsorption tank 4 can receive the sewage treated by the primary filtering device; the other pollutant adsorption tanks 4 are in a standing adsorption state. Therefore, the whole system can be in a working state all the time, and the working efficiency is improved. Preferably, the pollutant adsorption tanks 4 are sequentially connected in series, the pollutant adsorption tank 4 at the head end is connected with the water outlet 113 of the primary filtering device, and the pollutant adsorption tank 4 at the tail end is connected with the disinfection tank 400. Therefore, the sewage treated by the pollutant adsorption tank 4 is treated by the hydrolysis acidification tank 200 and the biological contact oxidation tank 300 before the disinfection tank 400 according to the sewage condition, so that the discharged sewage meets the discharge standard.
In addition, as shown in fig. 3 and 4, the preliminary filtering device includes a fixing base 11 and a plurality of layers of horizontally arranged filter screen assemblies 12 arranged on the frame body, the upper portion of the fixing base 11 is provided with a water inlet 111, and the side portion of the fixing base 11 is provided with a plurality of slag outlets 112 from top to bottom; each filter screen assembly 12 comprises a filter screen belt 121 and a rotating roller 122, wherein the filter screen belt 121 is wound on the rotating roller 122; the filter screen components 12 are arranged at intervals from top to bottom in sequence, and the mesh numbers of the filter screen belts 121 of the filter screen components 12 from top to bottom are increased in sequence; the outlet of the water delivery pipe 2 of the sewage collecting tank 100 is arranged above the uppermost layer of the filter screen assembly 12; each filter screen assembly 12 is suspended outside the slag outlet 112, and the upper surface of each filter screen belt 121 moves from the inner cavity of the fixing base 11 to the direction of the slag outlet 112; a slag removing brush 3 which is contacted with the lower surface of the filter screen belt 121 is arranged below each slag outlet 112; the lower end of the fixed seat 11 is provided with a water outlet 113.
In this way, the solid wastes collected to the upper surface of the screen assembly 12 are transported out of the slag hole 112 with the rotation of the screen belt 121 on the rotating roller 122 and then brushed down by the slag removing brush 3. The brushed solid wastes can be separately collected by the collecting tanks 114 which are in one-to-one correspondence with the filter screen assemblies 12, or the brushed solid wastes on all the filter screen assemblies 12 can be collected by one large collecting tank 114 and then removed at the same time; the solid waste in the collection tank 114, which has a recycling value, is subjected to a recycling process, and the solid waste that can be incinerated is sent to an incinerator for clinker production to be treated.
In addition, as shown in fig. 5 and fig. 6, the deslagging brush 3 has a brush holder 31 fixed on the fixed seat 11 and a brush head 32 detachably disposed on the brush holder 31, a propping limiting seat 311 is disposed in the brush holder 31, a spring 312 is disposed at the bottom of the propping limiting seat 311, the brush head 32 is clamped on the fixed seat 11, and the propping limiting seat 311 descends the brush head 32 to prop against the filter screen belt 121 under the action of the spring 312; the brush head 32 is provided with a T-shaped clamping seat 321, the brush seat 31 is provided with a T-shaped clamping groove 313, and the T-shaped clamping seat 321 is clamped on the T-shaped clamping groove 313. Through setting up removable slag removal brush 3, can effectively reduce filter screen area 121's loss to can not appear lengthening with time, filter screen area 121 because by the stifled condition of inefficiency. And meanwhile, the detachable arrangement is convenient for the installation and maintenance of operators.
Preferably, a collecting tank 114 for collecting the solid wastes counted by the corresponding deslagging brushes 3 is arranged on the outer wall of the fixed seat 11 below each deslagging brush 3. A collecting tank 114 for collecting the solid wastes counted by the deslagging brush 3 is arranged on the outer wall of the fixed seat 11 below the deslagging brush 3 at the lowest part; the collecting tank 114 is provided with a detachable door panel 115. The brushed solid wastes can be separately collected through the collecting tanks 114 corresponding to the screen assemblies 12 one by one, or the brushed solid wastes on all the screen assemblies 12 can be collected through one large collecting tank 114 and then removed out at the same time.
Preferably, the rotating rollers 122 comprise a driving roller 1221, a driven roller 1222 and two supporting rollers 1223 arranged in the middle of the filter screen belt 121, and the driving roller 1221, the driven roller 1222 and the supporting rollers 1223 are all rotatably arranged on the fixed base 11 in parallel; all the driving rollers 1221 are arranged on the same side; all the drive rollers 1221 are provided with chain wheels 1224, and two adjacent drive rollers 1221 are connected through a chain 13; the fixed seat 11 is further provided with a driving motor 14 for driving the driving roller 1221 to rotate. All the driving rollers 1221 are wound on the same chain 13; a tension sprocket 1225 is provided between the adjacent two drive rollers 1221. The driving motor 14 drives the driving roller 1221 through the chain 13, thereby reducing the number of motors and making the structure of the device more compact.
Preferably, a cyclone device 15 is formed at the lower end of the fixed seat 11, and the cyclone device 15 comprises an inclined plane 116 arranged at the bottom of the inner cavity of the fixed seat 11, a cyclone pipe 117 communicated with the lowest point of the inclined plane 116, and a lower water drum 118 communicated with the outlet of the cyclone pipe 117; the water outlet 113 of the preliminary filtering device is formed in the middle of the lower end of the lower water drum 118; the height of the swirl tube 117 from the inlet to the outlet decreases gradually. The rotational flow device 15 increases the speed of the water flow from top to bottom, which is beneficial to reducing the sediment deposition at the bottom of the inner cavity of the fixed seat 11, and meanwhile, the rotational flow device can drive the power generation blades 17 to rotate at a high speed due to the increase of the water flow speed, so that the power generator 16 generates power. The generated electric energy can be stored by a storage battery for intermittent operation of the driving motor 14. In addition, the inclined surface 116 has a first inclined surface 1161 and a second inclined surface 1162, and the swirl tube 117 has a first swirl tube 1171 and a second swirl tube 1172, and the swirl tube 117 is disposed between the first inclined surface 1161 and the second inclined surface 1162. The rotational flow device 15 increases the speed of the water flow from top to bottom, which is beneficial to reducing the sediment deposition at the bottom of the inner cavity of the fixed seat 1111. The inclined surface 116116 on the bottom of the inner cavity of the fixing seat 1111 can prevent accumulation of dirt and bacterial growth caused by long-term water accumulation on the bottom.
Preferably, a generator 16 is arranged in a water outlet 113 of the primary filtering device, a rotating shaft of the generator 16 is provided with a power generation blade 17 which can rotate under the impact of water flow, the generator 16 is connected with a storage battery, and the storage battery is connected with a driving motor 14; the driving motor 14 is further connected with a controller for controlling the rotation of the driving motor 14. By utilizing the power generation device, a part of kinetic energy of water can be converted into electric energy to be stored in the storage battery; the driving motor 14 is provided with electric energy when needed, so that the energy-saving and environment-friendly effects are achieved.
A sewage treatment process comprises the following steps:
(1) collecting sewage: collecting the sewage into a sewage collecting tank 100 through a pipe network;
(2) filtering and removing slag; a primary filtering device is adopted to remove slag from the sewage input from the sewage collecting tank 100, and solid wastes in the sewage are removed;
(3) multi-stage adsorption; adsorbing the sewage after filtering and deslagging by adopting a pollutant adsorption tank 4; a filtering material is arranged in the pollutant adsorption tank 4, and the filtering material comprises sawdust, building waste residue particles, crushed coal and crushed limestone particles with the particle size of 50-100 mm; the particle size of the building waste residue particles is 5-25 mm; an adsorption area 41 and a blocking area 42 are sequentially arranged in the pollutant adsorption pool from an inlet to an outlet, and the sawdust, the coal and part of the building waste residue particles are mixed and then arranged in the adsorption area 41; the limestone particles and part of the construction waste slag particles are arranged in the blocking area 42, and the construction waste slag in the blocking area 42 is positioned in gaps among the limestone particles; after the pollutant adsorption tank 4 is used for a period of time, replacing new filter materials, and using the replaced filter materials for producing sintered bricks;
(4) and (4) disinfecting and discharging, namely disinfecting the water treated by the pollutant adsorption tank 4 through a disinfection tank 400, and discharging after detection.
Compared with the prior art, the pollutant adsorption tank 4 is arranged to adsorb pollutants which are easy to generate a pollution layer in sewage, so that the pollution layer formed on a river channel by the discharged sewage is reduced, and the peculiar smell of the river channel and the influence on the attractiveness of the river channel are reduced.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (5)
1. A sewage treatment system is characterized by comprising a sewage collecting tank, a primary filtering device, a pollutant adsorption tank and a disinfection tank which are arranged in sequence; a water delivery pipe is arranged between the sewage collecting tank and the input port of the primary filtering device;
the water outlet of the primary filtering device is connected with the inlet of the pollutant adsorption tank; the pollutant adsorption tank is internally provided with a filtering material, and the filtering material comprises sawdust, building waste residue particles, crushed coal and crushed limestone particles with the particle size of 50-100 mm; the particle size of the building waste residue particles is 5-25 mm; an adsorption area and a blocking area are sequentially arranged in the pollutant adsorption pool from an inlet to an outlet, and the sawdust, the coal and part of the building waste residue particles are mixed and then arranged in the adsorption area; the limestone particles and part of the construction waste residue particles are arranged in a blocking area, and the construction waste residue in the blocking area is positioned in gaps among the limestone particles; the disinfection tank is connected with the outlet of the pollutant adsorption tank;
the primary filtering device comprises a fixed seat and a plurality of layers of horizontally arranged filter screen assemblies arranged on a frame body, wherein the upper part of the fixed seat is provided with a water inlet opening, and the side part of the fixed seat is provided with a plurality of slag outlets from top to bottom; each filter screen assembly comprises a filter screen belt and a rotating roller, and the filter screen belt is wound on the rotating roller; the filter screen components are arranged at intervals from top to bottom in sequence, and the mesh number of the filter screen belts of the filter screen components from top to bottom is increased in sequence; the outlet of the water delivery pipe of the sewage collecting tank is arranged above the uppermost filter screen assembly; each filter screen component is suspended outside the slag outlet, and the upper surface of each filter screen belt moves from the inner cavity of the fixed seat to the direction of the slag outlet; a slag removing brush which is contacted with the lower surface of the filter screen belt is arranged below each slag outlet; the lower end of the fixed seat is provided with a water outlet;
the deslagging brush is provided with a brush seat fixed on the fixed seat and a brush head detachably arranged on the brush seat, a propping and limiting seat is arranged in the brush seat, a spring is arranged at the bottom of the propping and limiting seat, the brush head is clamped on the fixed seat, and the propping and limiting seat descends under the action of the spring to prop the brush head towards the direction of the filter screen belt; the brush head is provided with a T-shaped clamping seat, the brush seat is provided with a T-shaped clamping groove, and the T-shaped clamping seat is clamped on the T-shaped clamping groove;
the rotating rollers comprise a driving roller, a driven roller and two supporting rollers arranged in the middle of the filter screen belt, and the driving roller, the driven roller and the supporting rollers are all arranged on the fixed seat in a parallel rotating mode; all the driving rollers are arranged on the same side; all the driving rollers are provided with chain wheels, and two adjacent driving rollers are connected through chains; the fixed seat is also provided with a driving motor for driving the driving roller to rotate;
a collecting tank for collecting the solid wastes counted by the corresponding slag removing brushes is arranged on the outer wall of the fixed seat below each slag removing brush;
the collecting tank is provided with a detachable door plate;
a swirling device is formed at the lower end of the fixed seat and comprises an inclined plane arranged at the bottom of an inner cavity of the fixed seat, a swirling tube communicated with the lowest point of the inclined plane and a lower water barrel communicated with an outlet of the swirling tube; the water outlet of the primary filtering device is formed in the middle of the lower end of the lower water barrel; the height from the inlet to the outlet of the cyclone tube is gradually reduced;
the inclined surface is provided with a first inclined surface and a second inclined surface, and the cyclone tube is provided with a first cyclone tube and a second cyclone tube;
a generator is arranged in a water outlet of the primary filtering device, a rotating shaft of the generator is provided with a generating blade capable of rotating under the impact of water flow, the generator is connected with a storage battery, and the storage battery is connected with a driving motor; the driving motor is also connected with a controller for controlling the driving motor to rotate.
2. The wastewater treatment system according to claim 1, wherein the wastewater treatment system comprises at least three pollutant adsorption tanks arranged in parallel, wherein one of the pollutant adsorption tanks is used for replacing the filtering material, and at least one pollutant adsorption tank can receive wastewater treated by the primary filtering device; and the other pollutant adsorption tanks are in a standing adsorption state.
3. The wastewater treatment system according to claim 1, wherein a plurality of pollutant adsorption tanks are sequentially arranged in series, the pollutant adsorption tank at the head end is connected with the water outlet of the primary filtering device, and the pollutant adsorption tank at the tail end is connected with the disinfection tank.
4. The sewage treatment system of claim 1, wherein a hydrolysis acidification tank and a biological contact oxidation tank are further arranged between the pollutant adsorption tank and the disinfection tank.
5. A wastewater treatment process using the wastewater treatment system according to any one of claims 1 to 3, further comprising the steps of:
(1) collecting sewage: collecting sewage into a sewage collecting tank through a pipe network;
(2) filtering and removing slag; deslagging sewage input from the sewage collecting tank by adopting a primary filtering device, and removing solid wastes in the sewage;
(3) multi-stage adsorption; adsorbing the sewage after filtering and deslagging by adopting a pollutant adsorption tank; the pollutant adsorption tank is internally provided with a filtering material, and the filtering material comprises sawdust, building waste residue particles, crushed coal and crushed limestone particles with the particle size of 50-100 mm; the particle size of the building waste residue particles is 5-25 mm; an adsorption area and a blocking area are sequentially arranged in the pollutant adsorption pool from an inlet to an outlet, and the sawdust, the coal and part of the building waste residue particles are mixed and then arranged in the adsorption area; the limestone particles and part of the construction waste residue particles are arranged in a blocking area, and the construction waste residue in the blocking area is positioned in gaps among the limestone particles; after the pollutant adsorption tank is used for a period of time, replacing a new concern material, and using the replaced filter material for producing a baked brick;
(4) and (4) disinfecting and discharging, namely disinfecting the water treated in the pollutant adsorption tank through the disinfection tank, and discharging after detection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011416683.0A CN112551811B (en) | 2020-12-07 | 2020-12-07 | Sewage treatment system and sewage treatment process thereof |
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| CN202011416683.0A CN112551811B (en) | 2020-12-07 | 2020-12-07 | Sewage treatment system and sewage treatment process thereof |
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| CN108947107A (en) * | 2018-07-02 | 2018-12-07 | 芜湖智权大数据运营有限公司 | Sewage disposal device |
| CN210287092U (en) * | 2019-08-06 | 2020-04-10 | 云南水佩科技有限公司 | Multi-medium filtering sewage treatment device capable of operating in stages |
| CN211546221U (en) * | 2020-01-10 | 2020-09-22 | 甘肃蓝碧青环保科技有限公司 | Sewage treatment degassing unit |
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