CN114684976B

CN114684976B - Treatment device and treatment method for urban initial rainwater and black and odorous water body

Info

Publication number: CN114684976B
Application number: CN202210613233.3A
Authority: CN
Inventors: 张玉红; 王雨露; 刘小翠; 陈志华; 李飞涟; 姜志雄
Original assignee: Hunan CRRC Environmental Engineering Co Ltd
Current assignee: Hunan CRRC Environmental Engineering Co Ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-08-12
Anticipated expiration: 2042-06-01
Also published as: CN114684976A

Abstract

The invention discloses a treatment device for initial rainwater and black and odorous water in cities, which comprises a primary reaction area, a secondary reaction area and a multi-stage sedimentation area, wherein the primary reaction area comprises a primary reaction tank and a primary submersible stirrer, the primary submersible stirrer is arranged in the primary reaction tank, the secondary reaction area comprises a secondary reaction tank and a secondary submersible stirrer, the secondary submersible stirrer is arranged in the secondary reaction tank, the secondary reaction tank is communicated with the primary reaction tank, the multi-stage sedimentation area comprises a plurality of sedimentation tanks, the sedimentation tanks are linearly distributed, and the first sedimentation tank is communicated with the secondary reaction tank according to the distribution direction of the sedimentation tanks; the invention also provides a method for treating the initial rainwater and the black and odorous water body in the city. Compared with the prior art, the invention can be used for treating initial rainwater with large instantaneous discharge and black and odorous water with complex pollutant components.

Description

Treatment device and treatment method for urban initial rainwater and black and odorous water body

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a treatment device and a treatment method for urban initial rainwater and black and odorous water.

Background

Along with the increasing development speed of cities in China, the phenomena of initial rainwater pollution and black and odorous water bodies are increasingly serious. The term "initial rain" refers to rain at the beginning of rainfall. The initial rain water is generally defined as the rainfall at the initial stage of rainfall, which is 15min to 30min or 20mm to 30mm thick. In the early stage of rainfall, a large amount of acid gases, automobile exhaust, factory waste gas and other pollutant gases in the air are dissolved in the rainwater, and after the rainwater falls to the ground, roof and asphalt concrete roads and the like are washed, so that the initial rainwater contains a large amount of pollutants, such as SS (suspended solids), COD (chemical oxygen demand), BOD5 (biochemical oxygen demand) and other pollutant indexes, the numerical value is high, the water quality generally exceeds the allowable discharge limit value of a receiving water body, the water environment is polluted by directly discharging the initial rainwater, and the water environment is required to be effectively controlled to reduce the pollution. Therefore, it is necessary to treat the initial rainwater of the city.

The black and odorous water body is an extreme embodiment that the water environment suffers from organic pollution exceeding the self-purification capacity of the water environment, the main pollutants are COD, BOD5, SS, NH3-N (ammonia nitrogen) and TP (total phosphorus), the DO (dissolved oxygen) content in the water body is too low, and the DO is less than 2.0mg/L usually. The water body is obviously blackened and accompanied by odor, plankton in the water is basically absent, aquatic plants are seriously degraded, a food chain is broken and cannot form a complete biological community, the water body ecological system is unbalanced and collapsed, the water body is low in transparency and turbid, and the self-purification capacity is basically lost. The black and odorous water body is a serious water pollution phenomenon, which not only affects the living environment of surrounding residents, but also seriously affects the urban landscape image. Therefore, the black and odorous water body is treated, the long-term treatment and the long-term cleaning are realized, and the black and odorous water body is completely eliminated.

At present, domestic treatment of initial rainwater is still in an initial stage. The initial rainwater treatment mainly comprises three types, one type is to arrange a closure facility to close the initial rainwater in the rainfall period to a municipal sewage pipe network, but because the concentration of pollutants contained in the initial rainwater is higher and the water volume is large, the direct closure and discharge into the sewage pipe network can bring larger load to a sewage treatment plant, influence the normal operation of the sewage treatment plant to a certain extent and even cause the phenomenon that the quality of the outlet water does not reach the standard; the second type is that a large reservoir is built to collect initial rainwater, and the initial rainwater is directly discharged into a natural water body environment after simple gravity sedimentation treatment, or pollutants in the collected initial rainwater are intercepted by a concave green land intercepting system and an artificial wetland through a biological retention system and the like, and the initial treatment is carried out to reduce the concentration of the pollutants in the initial rainwater; the third type is that the existing domestic initial rainwater treatment device is used for separating pollutants in initial rainwater, but most devices have the problems of large occupied area, inconvenience in transportation and installation, long starting time, high operation and management requirements and the like, and the existing initial rainwater treatment device is not widely applied, so that the quality of the initial rainwater is not effectively treated, and a large amount of rainwater resources are wasted. Therefore, the treatment of the initial rainwater is finally aimed at purifying and recycling, so that the water resource is kept fresh, and the rainwater resource is fully utilized.

The prior domestic black and odorous water body treatment method mainly comprises three main types of physical treatment, chemical treatment and biological treatment. The treatment of black and odorous water, exogenous emission reduction and endogenous dredging are the basis and the premise, water purification is a staged means, and hydrodynamic improvement technology and ecological restoration are long-acting guarantee measures. Bioremediation treatment costs are high, and endogenous and exogenous pollution needs to be well controlled; wherein, the biological purification measure is adopted to have insignificant improvement effect on the severely polluted black and odorous water body. The physical and chemical treatment methods usually introduce polluted water bodies to a roadside treatment system, purify the water bodies by physical or chemical techniques and then discharge the purified water bodies into a receiving water body, and most of the treatment methods need large free land around the water bodies, so that the treatment cost is high, and the black and odorous water bodies cannot be fundamentally treated. The treatment of black and odorous water is a complex and long system project, and is generally carried out by synthesizing a plurality of treatment technical measures, and the black and odorous water is gradually eliminated in stages in a planned way, so that a good treatment effect can be obtained, and finally, the long-term treatment is realized.

In view of the above, the inventors of the present application have made intensive studies to obtain a device and a method for treating urban initial rainwater and black and odorous water.

Disclosure of Invention

The invention aims to provide a treatment device and a treatment method for urban initial rainwater and black and odorous water, which can be used for treating initial rainwater with large instantaneous discharge and black and odorous water with complex pollutant components.

The technical purpose of the invention is realized by the following technical scheme:

a treatment device for initial urban rainwater and black and odorous water comprises a primary reaction area, a secondary reaction area and a multi-stage sedimentation area, wherein the primary reaction area comprises a primary reaction tank and a primary submersible stirrer, the primary submersible stirrer is arranged in the primary reaction tank, the secondary reaction area comprises a secondary reaction tank and a secondary submersible stirrer, the secondary submersible stirrer is arranged in the secondary reaction tank, the secondary reaction tank is communicated with the primary reaction tank, the multi-stage sedimentation area comprises a plurality of sedimentation tanks, the sedimentation tanks are linearly distributed, and the first sedimentation tank is communicated with the secondary reaction tank according to the distribution direction of the sedimentation tanks; it throws the device to still include the flocculating agent, the flocculating agent is thrown the device and is corresponded the position setting of one-level reaction tank, the flocculating agent is thrown the device and is spilled the pipe including diluting case, first connecting pipe, second connecting pipe, medicine pump and cloth, dilute the case and include case body, loading hopper, stirring vane and agitator motor, stirring vane locates in the case body, agitator motor connects stirring vane, the loading hopper is located the top of case body, and with the inside intercommunication of case body, be equipped with the connector on the case body, first connecting pipe connects the connector with the medicine pump, the second connecting pipe is connected the medicine pump with cloth spills the pipe, cloth spills the pipe level and locates one-level reaction tank top, cloth spills the bottom of pipe and is equipped with a plurality of medicine mouths.

In a preferred embodiment, the first three sedimentation tanks are provided with corrugated inclined plates according to the distribution direction, and sludge hoppers are arranged in the other sedimentation tanks except the first sedimentation tank.

In a preferred embodiment, the dilution box further comprises a filter member, the filter member is disposed at the connecting port, the filter member comprises a mounting ring and a filter plate, the filter plate comprises a fixing ring and a filter screen, the filter screen is mounted on the fixing ring, the mounting ring is mounted on the inner wall of the box body and surrounds the connecting port, and the fixing ring is connected with the mounting ring and is concentrically arranged with the mounting ring.

In a preferred embodiment, the dilution box further comprises a cleaning part, the cleaning part comprises a driving motor, a driving wheel, a rotating ring and a knocking component, the driving wheel is connected with a driving shaft of the driving motor, the periphery of the driving wheel is attached to the outer annular surface of the rotating ring, the driving wheel is used for driving the rotating ring to rotate, the rotating ring is sleeved on the first connecting pipe and contacts with the side wall of the box body, a plurality of accommodating grooves are formed in the side surface, close to the box body, of the rotating ring, magnets are arranged in the accommodating grooves, the knocking component is located in a space surrounded by the mounting ring, the knocking component comprises a supporting seat, a rotating rod, a knocking block and an action block, the supporting seat is fixed on the inner wall of the box body, a pin shaft is arranged in the middle of the rotating rod, and penetrates through the supporting seat, strike the piece and locate the one end of dwang, and be located being close to of dwang one side of filter screen, the effect piece is located the other end of dwang, and locate being close to of dwang one side of swivel becket, the effect piece adopts magnetic material to make, be used for with magnet takes place the interact.

In a preferred embodiment, the filter screen comprises a first interlayer and a second interlayer which are parallel to each other.

In a preferred embodiment, the filter screen still includes vibration transmission spare, vibration transmission spare includes at least one strikes the gasbag and a plurality of vibration gasbag, strike the gasbag with a plurality of vibration gasbag intercommunication, the vibration gasbag by first intermediate layer with the centre gripping of second intermediate layer, strike gasbag protrusion in the surface of first intermediate layer, the position that strikes the gasbag setting corresponds and sets up one strike the subassembly, just the position that strikes the gasbag corresponds the position setting of the piece of striking that strikes the subassembly.

In a preferred embodiment, a settling chamber is arranged in the box body, the settling chamber is arranged below the mounting ring, a sewage discharge outlet is arranged at the bottom of the settling chamber, and a sewage discharge valve is arranged on the sewage discharge outlet.

In a preferred embodiment, a first limiting ring is arranged on the outer peripheral wall of the first connecting pipe, a first limiting groove is arranged on the inner side wall of the rotating ring, and the first limiting ring is matched with the first limiting groove.

A method for treating initial rainwater and black and odorous water in city comprises introducing water into a treatment device, wherein the treatment device comprises a first-stage reaction zone, a second-stage reaction zone and a multi-stage sedimentation zone, the first-stage reaction zone comprises a first-stage reaction tank and a first-stage submersible stirrer, the first-stage submersible stirrer is arranged in the first-stage reaction tank, the second-stage reaction zone comprises a second-stage reaction tank and a second-stage submersible stirrer, the second-stage submersible stirrer is arranged in the second-stage reaction tank, the second-stage reaction tank is communicated with the first-stage reaction tank, the multi-stage sedimentation zone comprises a plurality of sedimentation tanks, the sedimentation tanks are linearly distributed, the sedimentation tanks are communicated with the second-stage reaction tank according to the distribution direction, the treatment device further comprises a flocculating agent feeding device, and the flocculating agent feeding device is arranged corresponding to the position of the first-stage reaction tank, feeder apparatus is thrown to flocculating agent spills the pipe including diluting case, first connecting pipe, second connecting pipe, medicine pump and cloth, dilute the case and include case body, loading hopper, stirring vane and agitator motor, stirring vane locates in the case body, agitator motor connects stirring vane, the loading hopper is located the top of case body, and with the inside intercommunication of case body, be equipped with the connector on the case body, first connecting pipe is connected the connector with the medicine pump, the second connecting pipe is connected the medicine pump with the pipe is spilt to cloth, cloth spills the pipe level and locates one-level reaction tank top, the bottom that the pipe was spilt to cloth is equipped with a plurality of medicine mouths.

Compared with the prior art, the invention has the following advantages: (1) the invention has the functions of quickly condensing, flocculating and settling pollutants in initial rainwater and black and odorous water, and the formed precipitate is not easy to break and has good dehydration property; and the system has strong impact load of resisting water quality and water quantity, can continuously and stably run in and out water, and is suitable for treating initial rainwater with large instantaneous discharge and black and odorous water with complex pollutant components.

(2) The invention has the advantages of easy operation, simple structure, miniaturization, small occupied area, convenient transportation and movement and high conformity with the working conditions on site.

(3) The invention can be connected in parallel in multiple stages, the treatment scale can be flexibly combined, the treated effluent quality can be discharged into natural water bodies such as nearby rivers, lakes and the like, and can be reused for road spraying, green land irrigation, public toilet flushing and the like, thereby realizing the resource utilization of sewage.

Drawings

Fig. 1 is a schematic structural diagram of a treatment device for urban initial rainwater and black and odorous water bodies.

FIG. 2 is a schematic sectional view of A-A in FIG. 1 (without a flocculant addition device).

FIG. 3 is a schematic structural diagram of a flocculating agent adding device of a treatment device for urban initial rainwater and black and odorous water.

FIG. 4 is a schematic diagram of the longitudinal section structure of a dilution tank of a flocculating agent adding device of a treatment device for urban initial rainwater and black and odorous water bodies.

Fig. 5 is an enlarged structural view of a portion a in fig. 4.

Fig. 6 is a schematic structural view of a filter screen of a treatment device for urban initial rainwater and black and odorous water according to the present invention.

Fig. 7 is a schematic view of a split structure of a filter screen of the treatment device for urban initial rainwater and black and odorous water.

In the drawings

A primary reaction zone 1; a first-stage reaction tank 2; a primary submersible mixer 3; a secondary reaction zone 4; a secondary reaction tank 5; a secondary submersible mixer 6; a multistage settling zone 7; a sedimentation tank 8; a corrugated sloping plate 9; a sludge hopper 10; a flocculating agent adding device 11; a first connecting pipe 12; a first retainer ring 13; a second connection pipe 14; a drug pump 15; a distribution pipe 16; a dilution tank 17; a tank body 18; a settling chamber 19; a sewage draining exit 20; a waste valve 21; a connection port 22; a hopper 23; the stirring blade 24; a stirring motor 25; a mounting ring 26; a fixing ring 27; a filter screen 28; the first interlayer 29; a second interlayer 30; knocking the airbag 31; a vibrating air bag 32; a drive motor 33; a drive wheel 34; a rotating ring 35; a magnet 36; a support base 37; turning the rod 38; a knock block 39; and an action block 40.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example one

As shown in fig. 1 to 7, a processing apparatus of initial rainwater in city and black smelly water, including one-level reaction zone 1, second grade reaction zone 4 and multistage sedimentation zone 7, one-level reaction zone 1 includes one-level reaction tank 2 and one-level dive mixer 3, one-level dive mixer 3 locates in the one-level reaction tank 2, second grade reaction zone 4 includes second grade reaction tank 5 and second grade dive mixer 6, second grade dive mixer 6 locates in the second grade reaction tank 5, second grade reaction tank 5 intercommunication one-level reaction tank 2, multistage sedimentation zone 7 includes a plurality of

sedimentation tanks

8, 8 linear distributions of a plurality of sedimentation tanks, in a plurality of sedimentation tanks 8, according to its distribution direction, it is first sedimentation tank 8 intercommunication second grade reaction tank 5.

The invention has the following advantages: (1) the invention has the functions of quickly condensing, flocculating and settling pollutants in initial rainwater and black and odorous water, and the formed precipitate is not easy to break and has good dehydration property; and the system has strong impact load of resisting water quality and water quantity, can continuously and stably run in and out water, and is suitable for treating initial rainwater with large instantaneous discharge and black and odorous water with complex pollutant components.

When water treatment is carried out, water is firstly introduced into the primary reaction zone 1, the hydraulic retention time is about 3min, the primary submersible stirrer 3 is stirred, the stirring speed gradient is about 830s < -1 > (the water temperature is assumed to be 20 ℃), the stirring intensity belongs to a rapid and rapid mixing range (the mixing and stirring speed gradient is generally 500- > 1000 s < -1 >), and a proper amount of composite flocculant is added into the primary reaction zone 1 according to the water inlet quality characteristics;

the water passing through the first-stage reaction zone 1 enters the second-stage reaction zone 4, the hydraulic retention time is about 3min, the second-stage submersible stirrer 6 is used for stirring, the stirring speed gradient is about 590s < -1 > (the water temperature is assumed to be 20 ℃), and the stirring intensity is in a sharp and rapid mixing range.

After passing through the secondary reaction zone 4, the water enters a multi-stage sedimentation zone 7, which is set to 9 sedimentation zones in the embodiment, the effective sedimentation time in the sedimentation tank 8 is about 8min, the surface load is 7.7m3/m2 h, and in a plurality of sedimentation tanks 8, according to the distribution direction, the first three sedimentation tanks 8 are provided with 0.5m long-wave-shaped inclined plates, and the addition of the inclined plates has two purposes: firstly, the surface load of a precipitation functional area is improved; and the inclined plate has the function of flow guiding, so that the water flow energy can be reduced, the subsequent water flow impact is reduced, and the water flow is transited to a subsequent precipitation functional area in a slow and stable laminar flow state as much as possible.

Among the plurality of sedimentation tanks 8, the first sedimentation tank 8 is not provided with the sludge bucket 10, is provided with a longitudinal slope of 0.075-0.085 (avoiding the water inlet disturbance from the reaction zone to the sedimentation zone), and is provided with the sludge bucket 10 in the rest of the sediments. The adding point of the composite flocculant is only arranged in the first-stage reaction area 1, and the adding point of the medicament is not arranged in the second-stage reaction area 4.

In practical application, the treatment process is as follows: (1) the initial rainwater is collected through the ground and flows into a rainwater pipeline, one or more sets of treatment devices of the invention are arranged at the tail end of the rainwater pipeline, the initial rainwater sequentially enters a primary reaction zone 1, a secondary reaction zone 4 and a multi-stage sedimentation zone 7 in the rapid treatment device through a water inlet, and pollutants such as COD, BOD5, TP, SS and the like in the initial rainwater are removed. (2) The black and odorous water body is introduced into the treatment device through the lift pump, the black and odorous water body sequentially enters the primary reaction zone 1, the secondary reaction zone 4 and the multi-stage sedimentation zone 7 in the treatment device, and pollutants such as COD, BOD5, SS, NH3-N, TP and the like in the black and odorous water body are removed. The treated initial rainwater and the effluent of the black and odorous water body can be directly discharged into natural water bodies such as nearby rivers, lakes and the like; or the effluent part is stored in a clean water tank and is used for road spraying, green land irrigation, public toilet flushing and the like, so that the initial rainwater and the black and odorous water body are treated and recycled.

The present embodiment is further described below with reference to the drawings.

Treatment of initial rainwater: the main source rainwater of pollutants in the initial stage rainwater dissolves a large amount of polluting gases in the air, such as acid gas, automobile exhaust, factory waste gas and the like, and after the pollutants fall to the ground, the pollutants are contained in the initial stage rainwater due to scouring of roofs, asphalt concrete roads and the like, and the pollutants are high in concentration and large in variation range.

Comprehensively consider, adopt the processing apparatus of an urban initial stage rainwater and black smelly water of this embodiment to carry out experimental processing to initial stage rainwater, experimental effect is shown in the following table.

Initial rainwater purification test effect

Serial number	Index of pollutants	Quality of inlet water (mg/L)	Effluent water quality (mg/L)	Purification Rate (%)
					1	COD	≤180	≤80	≥55.5
2	BOD5	≤110	≤60	≥45.4
					3	SS	≤300	≤20	≥93.3
4	TP	≤3	≤0.5	≥83.3
					5	pH	6-9	6-9	/

The test results show that: by adopting the treatment device for the urban initial rainwater and the black and odorous water body to treat the initial rainwater, the pollutant index values of COD, BOD5, SS and TP in the effluent quality are respectively reduced by 55.5%, 45.4%, 93.3% and 83.3%, the degree of pollutants in the initial rainwater is greatly reduced, and the problem that the surface water environment is polluted by the initial rainwater can be effectively avoided; meanwhile, a basic water quality guarantee condition is provided for realizing the resource utilization of the rainwater.

Aiming at black and odorous water: the black and odorous water body is formed by serious organic pollution of the water body, when the aerobic decomposition oxygen consumption rate of organic matters in the water body is greater than the reoxygenation rate, the water body is anoxic, so that the organic matters are not completely degraded and the speed is reduced, and odorous substances such as hydrogen sulfide, ammonia, mercaptan and the like are generated in the anaerobic biodegradation process, and black and odorous substances are formed at the same time, so that the water body is black and odorous.

The pollutants in the black and odorous water body are mainly COD, BOD5, SS, NH3-N, TP, and DO (dissolved oxygen) content in the water body is less than 2.0 mg/L. The values of pollutant indexes in the black and odorous water body are shown in the following table, and the experimental treatment of the black and odorous water body is carried out by adopting the rapid treatment device and the rapid treatment method for the initial rainwater and the black and odorous water body in the city, and the experimental effect is shown in the following table.

Experimental effect of purifying black and odorous water body

Serial number	Index of pollutants	Quality of inlet water (mg/L)	Effluent water quality (mg/L)	Purification Rate (%)
					1	COD	≤120	≤50	≥58.3
2	BOD5	≤80	≤40	≥50.0
					3	SS	≤250	≤20	≥92.0
4	NH3-N	≤20	≤15	≥25.0
					5	DO	≤2.0	3.0~3.5	50.0~75.0
6	TP	≤6.0	≤0.5	≥91.6
					7	pH	6-9	6-9	/

The test results show that: by adopting the treatment device for the initial rainwater and the black and odorous water body in the city to treat the black and odorous water body, the index values of pollutants of COD, BOD5, SS and NH3-N, TP in the effluent quality are respectively reduced by 58.3%, 50.0%, 92.0%, 25.0% and 91.6%, and the degree of pollutants in the black and odorous water body is greatly reduced; meanwhile, the DO content is increased by 50.0-75.0%, the imbalance of water body oxygen supply and oxygen consumption is relieved, and the problem of black and odorous water body can be effectively solved.

The treatment device of city initial rainwater and black and odorous water body of this embodiment still includes that the flocculating agent adds feeder apparatus 11, flocculating agent adds feeder apparatus 11 and corresponds the position setting of one-level reaction tank 2, flocculating agent adds feeder apparatus 11 and spills pipe 16 including diluting case 17, first connecting pipe 12, second connecting pipe 14, medicine pump 15 and cloth, diluting case 17 includes case body 18, loading hopper 23, stirring vane 24 and agitator motor 25, stirring vane 24 locates in case body 18, agitator motor 25 connects stirring vane 24, loading hopper 23 locates the top of case body 18, and with the inside intercommunication of case body 18, be equipped with connector 22 on case body 18, first connecting pipe 12 is connected connector 22 with medicine pump 15, second connecting pipe 14 is connected medicine pump 15 with cloth spills pipe 16, the scattering pipe 16 is horizontally arranged above the primary reaction tank 2, and a plurality of medicine outlets are formed in the bottom of the scattering pipe 16. The flocculating agent is thrown and fed by a flocculating agent feeding device 11, when the flocculating agent is thrown and fed, the flocculating agent is thrown into a box body 18 through a feeding hopper 23 of a dilution box 17, water is simultaneously added into the dilution box 17, a stirring motor 25 is used for driving a stirring blade 24 to rotate, the flocculating agent in the box body 18 is stirred and mixed, after dilution and mixing are completed, the flocculating agent in the box body 18 is pumped out to a spreading pipe 16 through a medicine pump 15, the flocculating agent flows out through a plurality of medicine outlets on the spreading pipe 16 and falls into a primary reaction tank 2, the flocculating agent is thrown and fed, the flocculating agent can be automatically diluted and fed through the flocculating agent feeding device 11, the problems of low efficiency and high labor capacity caused by manual throwing are reduced, the working efficiency is effectively improved, and the work load of workers is reduced.

In order to effectively filter the liquid medicine, the dilution box 17 further comprises a filter element, the filter element is arranged at the connecting port 22, the filter element comprises a mounting ring 26 and a filter plate, the filter plate comprises a fixing ring 27 and a filter screen 28, the filter screen 28 is arranged on the fixing ring 27, the mounting ring 26 is arranged on the inner wall of the box body 18 and surrounds the connecting port 22, and the fixing ring 27 is connected with the mounting ring 26 and concentrically arranged with the mounting ring 26. Under above-mentioned structural configuration, the installation of filter can be convenient for, particularly, collar 26 can weld on the inner wall of case body 18, and solid fixed ring 27 and collar 26 can utilize the bolt to carry out fixed connection to can realize dismantling the setting of filter, when filter screen 28 needs to be changed after long-term the use, can realize changing conveniently.

Further, the dilution box 17 further comprises a cleaning part, the cleaning part comprises a driving motor 33, a driving wheel 34, a rotating ring 35 and a knocking component, the driving wheel 34 is connected with a driving shaft of the driving motor 33, the periphery of the driving wheel 34 is attached to the outer annular surface of the rotating ring 35, the driving wheel 34 is used for driving the rotating ring 35 to rotate, the rotating ring 35 is sleeved on the first connecting pipe 12 and is in contact with the side wall of the box body 18, a plurality of arrangement grooves are formed in the side surface, close to the box body 18, of the rotating ring 35, magnets 36 are arranged in the arrangement grooves, the knocking component is located in a space surrounded by the installation ring 26, the knocking component comprises a supporting seat 37, a rotating rod 38, a knocking block 39 and an action block 40, the supporting seat 37 is fixed on the inner wall of the box body 18, and a pin shaft is arranged in the middle of the rotating rod 38, the round pin axle passes supporting seat 37, strike the piece 39 and locate the one end of dwang 38, and be located being close to of dwang 38 one side of filter screen 28, effect piece 40 is located the other end of dwang 38, and locate being close to of dwang 38 one side of swivel becket 35, effect piece 40 adopts magnetic material to make, be used for with magnet 36 takes place interact. Under the above structure setting, when the filter screen 28 needs to be cleaned, the driving motor 33 is started, the driving motor 33 drives the driving wheel 34 to rotate, the driving wheel 34 drives the rotating ring 35 to rotate, the rotating ring 35 enables the magnet 36 to generate circular motion in the rotating process, when the magnet 36 is close to the action block 40, attraction is formed on the action block 40, the action block 40 moves towards the direction close to the action block 40, when the action block 40 moves towards the magnet 36, the knocking block 39 moves towards the direction close to the filter screen 28, knocking is formed on the filter screen 28, in the continuous rotating process of the magnet 36, a state close to the action block 40 and a state far from the action block 40 are generated continuously, so that the knocking block 39 generates continuous knocking action, the filter screen 28 is knocked continuously, impurities on the filter screen 28 are knocked off, and the filter screen 28 is cleaned.

In order to make the rotating lever 38 restore the position in time after one stroke is completed to prepare for the next stroke, the connecting structure between the rotating lever 38 and the support base 37 may be set to a structure having a restoring force, for example, a torsion spring is provided on the lower pin shaft, for making the stroke piece 39 restore the position after one stroke occurs.

Further, the filter screen 28 includes a first interlayer 29 and a second interlayer 30 which are parallel to each other.

In order to further improve the cleaning effect, the filter screen 28 further comprises a vibration transmission part, the vibration transmission part comprises at least one knocking air bag 31 and a plurality of vibration air bags 32, the knocking air bag 31 is communicated with the plurality of vibration air bags 32, the vibration air bags 32 are clamped by the first interlayer 29 and the second interlayer 30, the knocking air bags 31 protrude out of the surface of the first interlayer 29, one knocking component is correspondingly arranged at the position where the knocking air bag 31 is arranged, and the position where the knocking air bag 31 is arranged corresponds to the position of the knocking block 39 of the knocking component. Under the above structure, the knocking block 39 knocks the knocking airbag 31 during the motion, when the knocking airbag 31 knocks, the knocking airbag 31 is compressed, since the knocking airbag 31 and the vibrating airbag 32 are communicated, when the knocking airbag 31 is compressed, the vibrating airbag 32 expands, and during the continuous knocking process of the knocking airbag 31, the knocking airbag 31 continuously generates a compression state, so that the vibrating airbag 32 continuously generates an expansion state, and thus the distance between the first interlayer 29 and the second interlayer 30 continuously changes, that is, the first interlayer 29 and the second interlayer 30 generate vibration, and impurities adhered to the first interlayer 29 and the second interlayer 30 shake off. Through the arrangement of the knocking air bag 31 and the vibrating air bag 32, the vibration effect is improved, on one hand, the vibration area is enlarged, and on the other hand, the vibration strength can be improved

In order to collect impurities shaken off from the filter screen 28, a settling chamber 19 is arranged in the box body 18, the settling chamber 19 is arranged below the mounting ring 26, a sewage discharge outlet 20 is arranged at the bottom of the settling chamber 19, and a sewage discharge valve 21 is arranged on the sewage discharge outlet 20.

In order to accurately limit the position of the rotating ring 35, a first limiting ring 13 is arranged on the outer peripheral wall of the first connecting pipe 12, a first limiting groove is formed in the inner side wall of the rotating ring 35, and the first limiting ring 13 is matched with the first limiting groove.

Example two:

as shown in fig. 1 to 7, a method for treating urban initial rainwater and black and odorous water comprises the following steps of introducing water into a treatment device, the treatment device comprises a first-stage reaction zone 1, a second-stage reaction zone 4 and a multi-stage sedimentation zone 7, wherein the first-stage reaction zone 1 comprises a first-stage reaction tank 2 and a first-stage submersible stirrer 3, the primary submersible mixer 3 is arranged in the primary reaction tank 2, the secondary reaction zone 4 comprises a secondary reaction tank 5 and a secondary submersible mixer 6, the secondary submersible mixer 6 is arranged in the secondary reaction tank 5, the secondary reaction tank 5 is communicated with the primary reaction tank 2, the multistage settling zone 7 comprises a plurality of settling ponds 8, the settling ponds 8 are linearly distributed, and the first settling pond 8 is communicated with the secondary reaction pond 5 in the settling ponds 8 according to the distribution direction.

Among the plurality of sedimentation tanks 8, according to the distribution direction thereof, corrugated inclined plates 9 are arranged in the first three sedimentation tanks 8, and sludge hoppers 10 are arranged in the remaining sedimentation tanks 8 except the first sedimentation tank 8.

Also comprises a flocculating agent adding device 11, the flocculating agent adding device 11 is arranged corresponding to the position of the primary reaction tank 2, the flocculating agent adding device 11 comprises a dilution tank 17, a first connecting pipe 12, a second connecting pipe 14, a medicine pump 15 and a distributing pipe 16, the dilution tank 17 comprises a tank body 18, a hopper 23, a stirring blade 24 and a stirring motor 25, the stirring blade 24 is arranged in the box body 18, the stirring motor 25 is connected with the stirring blade 24, the loading hopper 23 is arranged at the top of the box body 18, and is communicated with the interior of the box body 18, a connecting port 22 is arranged on the box body 18, the first connection pipe 12 connects the connection port 22 and the medicine pump 15, the second connection pipe 14 connects the medicine pump 15 and the dispensing pipe 16, the scattering pipe 16 is horizontally arranged above the primary reaction tank 2, and a plurality of medicine outlets are formed in the bottom of the scattering pipe 16.

Dilution box 17 still includes and filters the piece, filter and locate connector 22 department, filter and include collar 26 and filter, the filter includes solid fixed ring 27 and filter screen 28, filter screen 28 install in gu fixed ring 27 is last, collar 26 install in on the inner wall of case body 18, and encircle connector 22, gu fixed ring 27 is connected collar 26, and with collar 26 sets up with one heart.

The dilution box 17 further comprises a cleaning part, the cleaning part comprises a driving motor 33, a driving wheel 34, a rotating ring 35 and a knocking component, the driving wheel 34 is connected with a driving shaft of the driving motor 33, the periphery of the driving wheel 34 is attached to the outer annular surface of the rotating ring 35, the driving wheel 34 is used for driving the rotating ring 35 to rotate, the rotating ring 35 is sleeved on the first connecting pipe 12 and is in contact with the side wall of the box body 18, a plurality of arrangement grooves are formed in the side surface, close to the box body 18, of the rotating ring 35, magnets 36 are arranged in the arrangement grooves, the knocking component is located in a space surrounded by the installation ring 26, the knocking component comprises a supporting seat 37, a rotating rod 38, a knocking block 39 and an action block 40, the supporting seat 37 is fixed on the inner wall of the box body 18, a pin shaft is arranged in the middle of the rotating rod 38, the round pin axle passes supporting seat 37, strike the piece 39 and locate the one end of dwang 38, and be located being close to of dwang 38 one side of filter screen 28, effect piece 40 is located the other end of dwang 38, and locate being close to of dwang 38 one side of swivel becket 35, effect piece 40 adopts magnetic material to make, be used for with magnet 36 takes place interact.

The filter screen 28 comprises a first interlayer 29 and a second interlayer 30 parallel to each other.

Filter screen 28 still includes vibration transmission spare, vibration transmission spare includes at least one hits gasbag 31 and a plurality of vibration gasbag 32, hit gasbag 31 with a plurality of vibration gasbag 32 intercommunications, vibration gasbag 32 quilt first intermediate layer 29 with the centre gripping of second intermediate layer 30, hit gasbag 31 protrusion in the surface of first intermediate layer 29, the position correspondence that hits gasbag 31 and set up one hit the subassembly, just the position that hits gasbag 31 corresponds the position setting of the piece 39 that hits of beating the subassembly.

The box body 18 is internally provided with a settling chamber 19, the settling chamber 19 is arranged below the mounting ring 26, the bottom of the settling chamber 19 is provided with a sewage discharge outlet 20, and the sewage discharge outlet 20 is provided with a sewage discharge valve 21.

Be equipped with first spacing ring 13 on the periphery wall of first connecting pipe 12, be equipped with first spacing groove on the inside wall of rotating ring 35, first spacing ring 13 with first spacing groove cooperatees.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

The foregoing description of the embodiments is provided to facilitate an understanding and use of the invention and it will be apparent to those skilled in the art that various modifications to the embodiments and the generic principles defined herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. A treatment device for urban initial rainwater and black and odorous water bodies is characterized by comprising a first-stage reaction zone, a second-stage reaction zone and a multi-stage sedimentation zone, wherein the first-stage reaction zone comprises a first-stage reaction tank and a first-stage submersible stirrer, the first-stage submersible stirrer is arranged in the first-stage reaction tank, the second-stage reaction zone comprises a second-stage reaction tank and a second-stage submersible stirrer, the second-stage submersible stirrer is arranged in the second-stage reaction tank, the second-stage reaction tank is communicated with the first-stage reaction tank, the multi-stage sedimentation zone comprises a plurality of sedimentation tanks, the sedimentation tanks are linearly distributed, and the first sedimentation tank is communicated with the second-stage reaction tank according to the distribution direction of the sedimentation tanks; the device comprises a primary reaction tank, a first connecting pipe, a second connecting pipe, a chemical pump and a distributing pipe, and is characterized by further comprising a flocculating agent feeding device, wherein the flocculating agent feeding device is arranged at a position corresponding to the primary reaction tank and comprises a dilution box, a first connecting pipe, a second connecting pipe, the chemical pump and the distributing pipe, the dilution box comprises a box body, a feeding hopper, a stirring blade and a stirring motor, the stirring blade is arranged in the box body, the stirring motor is connected with the stirring blade, the feeding hopper is arranged at the top of the box body and is communicated with the interior of the box body, a connecting port is arranged on the box body, the first connecting pipe is connected with the connecting port and the chemical pump, the second connecting pipe is connected with the chemical pump and the distributing pipe, the distributing pipe is horizontally arranged above the primary reaction tank, and a plurality of chemical outlets are arranged at the bottom of the distributing pipe; the dilution box further comprises a filter element, the filter element is arranged at the connecting port, the filter element comprises a mounting ring and a filter plate, the filter plate comprises a fixing ring and a filter screen, the filter screen is mounted on the fixing ring, the mounting ring is mounted on the inner wall of the box body and surrounds the connecting port, and the fixing ring is connected with the mounting ring and is arranged concentrically with the mounting ring; the dilution box further comprises a cleaning part, the cleaning part comprises a driving motor, a driving wheel, a rotating ring and a knocking component, the driving wheel is connected with a driving shaft of the driving motor, the periphery of the driving wheel is attached to the outer ring surface of the rotating ring, the driving wheel is used for driving the rotating ring to rotate, the rotating ring is sleeved on the first connecting pipe and is in contact with the side wall of the box body, a plurality of placing grooves are formed in the side surface, close to the box body, of the rotating ring, magnets are arranged in the placing grooves, the knocking component is located in the space surrounded by the installing ring and comprises a supporting seat, a rotating rod, a knocking block and an action block, the supporting seat is fixed on the inner wall of the box body, a pin shaft is arranged in the middle of the rotating rod and penetrates through the supporting seat, and the knocking block is arranged at one end of the rotating rod, the action block is arranged at the other end of the rotating rod and at one side of the rotating rod close to the rotating ring, and is made of a magnetic material and used for interacting with the magnet; the filter screen comprises a first interlayer and a second interlayer which are parallel to each other; the filter screen is still including vibration transmission spare, vibration transmission spare includes at least one strikes gasbag and a plurality of vibration gasbag, strike the gasbag with a plurality of vibration gasbag intercommunications, the vibration gasbag quilt first intermediate layer with the centre gripping of second intermediate layer, strike gasbag protrusion in first intermediate layer's surface, the position correspondence that strikes the gasbag setting sets up one strike the subassembly, just the position correspondence of striking the gasbag strike the position setting of piece of subassembly.

2. The device for treating urban initial rainwater and black and odorous water according to claim 1, wherein corrugated inclined plates are arranged in the first three sedimentation tanks according to the distribution direction of the sedimentation tanks, and sludge hoppers are arranged in the other sedimentation tanks except the first sedimentation tank.

3. The device for treating the initial urban rainwater and the black and odorous water body according to claim 1, wherein a settling chamber is arranged inside the box body and is arranged below the mounting ring, a sewage draining outlet is arranged at the bottom of the settling chamber, and a sewage draining valve is arranged on the sewage draining outlet.

4. The device for treating urban initial rainwater and black and odorous water according to claim 1, wherein a first limiting ring is arranged on the outer peripheral wall of the first connecting pipe, a first limiting groove is arranged on the inner side wall of the rotating ring, and the first limiting ring is matched with the first limiting groove.

5. A method for treating initial rainwater and black and odorous water in cities is characterized by comprising the following steps of introducing water into a treatment device, wherein the treatment device comprises a first-stage reaction zone, a second-stage reaction zone and a multi-stage sedimentation zone, the first-stage reaction zone comprises a first-stage reaction tank and a first-stage submersible stirrer, the first-stage submersible stirrer is arranged in the first-stage reaction tank, the second-stage reaction zone comprises a second-stage reaction tank and a second-stage submersible stirrer, the second-stage submersible stirrer is arranged in the second-stage reaction tank, the second-stage reaction tank is communicated with the first-stage reaction tank, the multi-stage sedimentation zone comprises a plurality of sedimentation tanks, the sedimentation tanks are linearly distributed, and according to the distribution direction of the sedimentation tanks, the first sedimentation tank is communicated with the second-stage reaction tank, the treatment device further comprises a flocculating agent adding device, and the flocculating agent adding device is arranged corresponding to the position of the first-stage reaction tank, the flocculant adding device comprises a dilution tank, a first connecting pipe, a second connecting pipe, a pesticide pump and a dispersing pipe, wherein the dilution tank comprises a tank body, a feeding hopper, stirring blades and a stirring motor, the stirring blades are arranged in the tank body, the stirring motor is connected with the stirring blades, the feeding hopper is arranged at the top of the tank body and is communicated with the interior of the tank body, a connecting port is arranged on the tank body, the first connecting pipe is connected with the connecting port and the pesticide pump, the second connecting pipe is connected with the pesticide pump and the dispersing pipe, the dispersing pipe is horizontally arranged above the primary reaction tank, and a plurality of pesticide outlets are formed in the bottom of the dispersing pipe; the dilution box further comprises a filter element, the filter element is arranged at the connecting port, the filter element comprises a mounting ring and a filter plate, the filter plate comprises a fixing ring and a filter screen, the filter screen is mounted on the fixing ring, the mounting ring is mounted on the inner wall of the box body and surrounds the connecting port, and the fixing ring is connected with the mounting ring and is arranged concentrically with the mounting ring; the dilution box further comprises a cleaning part, the cleaning part comprises a driving motor, a driving wheel, a rotating ring and a knocking component, the driving wheel is connected with a driving shaft of the driving motor, the periphery of the driving wheel is attached to the outer ring surface of the rotating ring, the driving wheel is used for driving the rotating ring to rotate, the rotating ring is sleeved on the first connecting pipe and is in contact with the side wall of the box body, a plurality of placing grooves are formed in the side surface, close to the box body, of the rotating ring, magnets are arranged in the placing grooves, the knocking component is located in the space surrounded by the installing ring and comprises a supporting seat, a rotating rod, a knocking block and an action block, the supporting seat is fixed on the inner wall of the box body, a pin shaft is arranged in the middle of the rotating rod and penetrates through the supporting seat, and the knocking block is arranged at one end of the rotating rod, the action block is arranged at the other end of the rotating rod and at one side of the rotating rod close to the rotating ring, and is made of a magnetic material and used for interacting with the magnet; the filter screen comprises a first interlayer and a second interlayer which are parallel to each other; the filter screen is still including vibration transmission spare, vibration transmission spare includes at least one strikes gasbag and a plurality of vibration gasbag, strike the gasbag with a plurality of vibration gasbag intercommunications, the vibration gasbag quilt first intermediate layer with the centre gripping of second intermediate layer, strike gasbag protrusion in first intermediate layer's surface, the position correspondence that strikes the gasbag setting sets up one strike the subassembly, just the position correspondence of striking the gasbag strike the position setting of piece of subassembly.