CN108104248A - A kind of initial rainwater discharge device and its application method based on Rainwater Quality control - Google Patents
A kind of initial rainwater discharge device and its application method based on Rainwater Quality control Download PDFInfo
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- CN108104248A CN108104248A CN201711376977.3A CN201711376977A CN108104248A CN 108104248 A CN108104248 A CN 108104248A CN 201711376977 A CN201711376977 A CN 201711376977A CN 108104248 A CN108104248 A CN 108104248A
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- rainwater
- solenoid valve
- turbidity
- rain
- rainfall
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
Abstract
The invention belongs to the technical fields such as urban rainwater resources utilization, sponge urban construction, provide a kind of initial rainwater discharge device and its application method based on Rainwater Quality control.The device is directly installed in existing collection rain pipeline, including external flow abandoning apparatus, automatic control circuit.Rainwater turbidity transducer in external flow abandoning apparatus is connected with collection rain pipe, diversion pipe respectively in water quality detection bucket above water quality detection bottom of the barrel and side, for collecting the first rain of detection, discharging the higher rainwater diversion of initial stage turbidity to sewage mouth.Automatic control circuit includes rainfall inductor, turbid ity signal transfer unit, power supply, socket, normally closed solenoid valve and normally open solenoid valve, is transferred for detecting rainfall information with turbid ity signal.The present invention can adapt to different condition of raining and city rainfall runoff difference scour law and carry out accurate abandoned stream, utmostly ensure to collect the preferable amount of rainfall of water quality；The characteristics of adaptable strong, high degree of automation, contamination control are stable, abandoned stream amount is accurate.
Description
Technical field
The invention belongs to the technical fields such as urban rainwater resources utilization, sponge urban construction, are related to a kind of based on rainwater water
The initial rainwater discharge device of Quality Control, for the collection and utilization of urban rainwater.
Background technology
China's shortage of water resources, and north and south is unevenly distributed.On the other hand, further speeding up with China's urbanization rate,
City water resource demand sharply increases, and is rationally to solve the shortage of China's city water resource and water demand using rainwater resource
The important content of this big contradiction of amount especially develops city collection rain device and carries out rainwater-collecting, purification and comprehensive utilization
It is the important step in China's sponge urban construction.During rainwater utilization, initial rainwater water quality inferiority is to influence rainwater resource
One of the biggest problem utilized (parking lots such as Zhang Yanjuan collection rain carwash field test [J] China soil and water conservation science, 2014,1
(1):109-113).In the early stage under the action of scouring effect, substantial amounts of pollutant is often carried in rainfall Initial Runoff, can be led
Runoff initial stage is caused to generate a higher pollutant concentration peak value, the rainwater that these initial stages contain a large amount of pollutants adds rainwater
The difficulty of Collection utilization.Precontamination object concentration is affected by many factors, such as rainwater-collecting area area, rainfall intensity and dry spell
Length etc. can all influence just rainwater matter.Research shows that initial rainwater carries substantial amounts of pollutional load, initial rainwater pollution compared with
To be serious, therefore, rainwater unconventional water resource controls initial rainwater to be particularly important the (such as Wang Qian during Collection utilization
Domestic typical urban rainfall runoff initial stage accumulates signature analysis [J] China Environmental Sciences, 2015,35 (6):1719-1725).Rain
Water is in the early stage under souring, and just major pollutants in the rain are total suspended particle (TSS), total nitrogen (TN), total phosphorus (TP), change
Learn oxygen demand (COD) and Heavy Metals (the roofing Initial Runoff reject amount discussion that the such as Meng Yingying are controlled based on pollutional load
[J] China water supply and drainage, 2010,26 (7):40-42.).For first rain most distinct feature is that TSS contents are high, water body is muddy, with
The passage of time, rainwater gradually become clear.
Urban rainwater mainly has roofing, road, wherein three kinds of permeability ground confluence medium, surface runoff Rainwater Quality most
Difference, for permeability surface runoff rainwater substantially based on infiltration, collectable rainwater is extremely limited.Urban roof rainwater catchment system
It is more convenient, pollution level is low, utility value is high.With the fast development in city, Urban roof area also increased dramatically, roofing
Rainwater catchment system potentiality are very huge.Current Urban roof rainwater-collecting is mainly defeated by initial rainwater discharge, rainwater-collecting, rainwater
It send and is formed with rainwater storage system.Initial rainwater discharge is the first step that Rainwater Resources utilize, and the first rain of water quality inferiority is filled by abandoned stream
Abandoned stream is put to Municipal sewage conduct, so as to ensure the water quality of later collection rainwater.More initial rainwater discharge device is applied at present
There are mainly two types of modes：Abandoned stream device based on rain time and the flow abandoning apparatus based on rainfall flow.Based on rain time abandoned stream
Device is simple in structure, is mainly made of the abandoned stream bucket and floating ball of a constant volume, when the floating ball in abandoned stream bucket with the raising of water level and
It gradually rises, when water level reaches design water level, floating ball is also risen at the top of abandoned stream bucket, has blocked the water inlet of abandoned stream device, from
And just rain retention is completed, rainwater afterwards, which just changes its course, is flowed into rainwater-collecting unit.This initial rainwater discharge device is simple in structure, installation
It is convenient, it is most widely used, but it cannot carry out effective abandoned stream according to rainfall intensity and the contaminated degree of roofing, and abandoned stream amount is permanent
It is fixed, different condition of raining can not be tackled and rained the first rain of the first pollutional loads of formed difference, when especially rainfall comes,
It is often formed and pollutes more serious first rain, the rainwater of later collection can be caused by still carrying out initial rainwater discharge according to setting water level
Water quality deterioration.
Second of common initial rainwater discharge device carries out abandoned stream according to rainwater flow.Its principle was dropped based on general rainfall initial stage
Raininess degree is larger, for example mechanical turnover panel initial rainwater discharge device is exactly one of which abandoned stream mode (Yang Xiao etc., the first rain separator of turnover plate type
Design [J], water resource and Hydraulic Projects journal, 2010,21 (60):121-124), which makes turnover panel using hydraulic action
Automatic turning, so as to carry out early-stage rainwater stream abandoning processing.When not raining, turnover panel is in obliquity, after rainfall starts, initial stage rain
Water rains from turnover panel is discharged to municipal dirty drainage pipeline.When rainfall increases, turnover panel under gravity and water pressure collective effect from
Dynamic overturning so that turnover panel lower end discharge outlet is closed, and rain collecting pool water level lifting, the rainwater collected is flowed into water storage by collection port
Pond.When rainfall is reduced, rain collecting pool water level decreasing, turnover panel can be restored to initial angled position under the effect of gravity again, and the later stage is few
Measuring rainwater also can be by abandoned stream.The apparatus structure is simple, can be automatically performed abandoned stream action.
Although the initial rainwater discharge utensil of both the above form has the characteristics of simple in structure, easy to use, cannot be real
The now accurate abandoned stream of first rain, can not flexibly be corresponded to according to different condition of raining, and then can not ensure later collection rainwater
Water quality, therefore, the initial rainwater discharge device that different characteristics of rainfall and different rain drop erosion conditions are tackled in exploitation is utility rainwater
The key link of water quality.
The content of the invention
For some problems existing for above-mentioned existing initial rainwater discharge device, the present invention provides a kind of according to Rainwater Quality feature
The initial rainwater discharge device of accurate abandoned stream is carried out, makes it is suitable for the initial rainwater discharges in rain water collecting system under various condition of raining to fill
It puts.The existing collection rain device change of initial rainwater discharge device based on Rainwater Quality control is few, and mobility is high, before having application well
Scape.
In order to achieve the above object, the technical scheme is that：
A kind of initial rainwater discharge device based on Rainwater Quality control, the device are directly installed in existing collection rain pipeline, including
External flow abandoning apparatus, automatic control circuit.
The external flow abandoning apparatus includes water quality detection bucket, rainwater turbidity transducer, diversion pipe, collection rain pipe.The rainwater
Turbidity transducer is mounted in water quality detection bucket, modular assembly.Water quality detection bottom of the barrel has a perforate, and connection collection rain pipe is used
It is detected in the collection of initial rainwater.One upper lateral part of water quality detection bucket has a perforate, connects diversion pipe, for by initial stage turbidity compared with
High rainwater diversion to sewage mouth is discharged.
The automatic control circuit transfers for detecting rainfall information with turbid ity signal, is passed including rainfall inductor, turbid ity signal
Pass unit, power supply, socket, normally closed solenoid valve and normally open solenoid valve.The socket is arranged in circuit box.The rainfall sensing
Device and rainwater turbidity transducer are connected by circuit with turbid ity signal transfer unit, and rainfall inductor rest on the ground to feel
Rainfall is answered, for detecting rainwater turbidity in real time, turbid ity signal transfer unit is arranged in circuit box rainwater turbidity transducer, according to
The rainwater turbidity information control socket that rainwater turbidity transducer measures is connected with power supply, is supplied to normally closed solenoid valve, normally open solenoid valve
Electricity, that is, control normally closed solenoid valve, normally open solenoid valve opening and closing, and then control rainwater whether abandoned stream.
In the case where not powering, normally closed solenoid valve is closed for normally closed solenoid valve, normally open solenoid valve, and normally open solenoid valve is opened
When, rainwater is flowed into through collecting rain pipe in water quality detection bucket.In the case of normally closed solenoid valve, normally open solenoid valve power supply, normally closed solenoid valve
It opens, when normally open solenoid valve is closed, rainwater directly enters collection rain collector unit or rainwater purification unit through existing drainage pipeline.
The application method of the above-mentioned initial rainwater discharge device based on Rainwater Quality control, comprises the following steps：
After sensing rainfall generation by rainfall inductor, start rainwater turbidity transducer progress rainwater turbidity and monitor in real time,
When Rainwater Quality turbidity is higher, the diversion pipe solenoid valve that rain water drainage bucket is flowed on diversion pipe is opened, and first rain directly passes through dirt
The mouth of a river enters abandoned stream bucket, and then flows to city planting ductwork.With the propulsion of rainfall duration, rainwater is detected according to rainwater turbidity transducer
Turbidity, Rainwater Quality haze reduction flow to abandoned stream bucket solenoid closure on diversion pipe, rainwater pass through pipeline flow into collection rain collect it is single
Member or rainwater purification unit.
Step 1：The threshold value of rainwater turbidity transducer is set, collection requirement is met according to Rainwater Quality or subsequent purification will
Seek design threshold size.
Step 2：After rainfall inductor obtains rainfall signal, entire flow abandoning apparatus unit is triggered, normally open solenoid valve is opening
State, normally closed solenoid valve are in off state, and rainwater, which passes through, collects rain pipe arrival water quality detection bucket, the rainwater turbidity in water quality detection bucket
Sensor monitors Rainwater Quality in real time, judges rainfall moderate rain water turbidity：
If the threshold value that the rainwater turbidity of first rain sets if more than rainwater turbidity transducer, the first rain in water quality detection bucket is through leading
Flow tube abandoned stream is drained into sewage mouth in municipal wastewater pipeline.With the progress of rainfall, rainwater turbidity continuously decreases, when rainwater turbidity
When the turbidity that sensor monitors in real time is not more than threshold value, Rainwater Quality meets collection requirement or subsequent purification requirement, turbidity letter
Number transfer unit output signal, control socket are connected with power supply, to normally closed solenoid valve, normally open solenoid valve power supply, normally closed solenoid valve
It opens, while normally open solenoid valve is closed, follow-up rainwater directly enters rainwater-collecting unit or rainwater purification list through existing pipeline
Member.
If the rainwater turbidity of first rain is not more than the threshold value of rainwater turbidity transducer setting, turbid ity signal transfer unit 9 exports
Signal, control socket are connected with power supply, are powered to normally closed solenoid valve, normally open solenoid valve, normally closed solenoid valve is opened, while normally opened electricity
Magnet valve is closed, and follow-up rainwater enters rainwater-collecting unit or rainwater purification unit.
Step 3：When rainfall inductor senses rain stopping time, turbid ity signal transfer unit output information, socket breaks with power supply
It opens, normally closed solenoid valve, normally open solenoid valve power-off, normally open solenoid valve are opened, and normally closed solenoid valve is closed, and then whole device is restored to
Holding state.
The basic principle of the present apparatus is the brightest based on total suspended particle concentration (TSS) feature in first rain pollutional load
Aobvious, rainfall initial stage reaches certain peak value with the propulsion of rainfall duration and the increasing of rainfall intensity, the increase of TSS concentration.Mesh
The preceding technology on turbidity transducer in water quality monitoring is more mature, can carry out the real-time monitoring of water quality, and turbidity with
There is good linear relationship again between TSS, can react the concentration of graininess pollutant in water body.Based on above-mentioned basic principle and
Thinking, we design the initial rain flow removing device based on Rainwater Quality control.Such as in catchment early period of origination, rainwater passes through pipeline
Flow to water turbidity sensor, the first rain of sensor monitoring in real time, when turbidity not up to will using Rainwater Quality higher than given threshold
When asking, rainwater is by overflowing to just rain collecting vessel, and be flowed into municipal sewage pipe network.When rainwater turbidity is less than given threshold,
Turbidity transducer transmission telecommunications number then controls solenoid valve to open, starts to collect rainwater to relay.The present apparatus and existing just rain
Flow abandoning apparatus is compared, although the construction of existing apparatus is opposite, existing apparatus cannot correspond to different condition of raining, be difficult to tackle not
Feature, which is washed away, with first rain carries out accurate abandoned stream.
The invention has the advantages that for other initial rainwater discharge devices that compare, have the beneficial effect that：1) present apparatus is complete
Realization automatically controls, and does not have personnel's maintenance cost, can tackle rainfall this very random process.2) present apparatus is adapted to not
With condition of raining and city rainfall runoff difference scour law and accurate abandoned stream is carried out, takes into full account follow-up rainwater-collecting, processing
Using the water balance of system, utmostly ensure to be collected into the sufficient and preferable amount of rainfall of water quality, compensate for existing abandoned stream dress
Put the shortcomings such as excessive, abandoned stream amount is difficult to control, pollutant catabolic gene effect is unstable, adaptable strong, the degree of automation
The features such as height, contamination control are stable, abandoned stream amount is accurate.
Description of the drawings
Fig. 1 is the initial rainwater discharge device structure diagram based on Rainwater Quality control；
Fig. 2 is the initial rainwater discharge device circuit control principle figure based on Rainwater Quality control；
In figure：1 water quality detection bucket；2 rainwater turbidity transducers；3 diversion pipes；4 collection rain pipes；5 normally closed solenoid valves；6 normally opened electricity
Magnet valve；7 rainfall inductors；8 circuit box；9 turbid ity signal transfer units；10 sockets.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described.
A kind of initial rainwater discharge device based on Rainwater Quality control, the device are directly installed in existing collection rain pipeline, including
External flow abandoning apparatus, automatic control circuit.One perforate, connection collection rain pipe are arranged at 1 bottom of water quality detection bucket in the external flow abandoning apparatus
4.One upper lateral part of water quality detection bucket 1 has a perforate, connects diversion pipe 3, valve is set on diversion pipe.In the automatic control circuit
Socket 10 is arranged in circuit box 8；Rainfall inductor 7 and rainwater turbidity transducer 2 are transferred single by circuit and turbid ity signal
Member 9 connects, and rainfall inductor 7 rest on the ground to sense rainfall, and rainwater turbidity transducer 2 is turbid for detecting rainwater in real time
Degree.Turbid ity signal transfer unit 9 is arranged in circuit box 8, and the rainwater turbidity information measured according to rainwater turbidity transducer 2 controls
Socket 10 is connected with power supply, control rainwater whether abandoned stream, be specially：Socket 10 is connected with normally closed solenoid valve 5, normally open solenoid valve 6,
When turbid ity signal transfer unit 9 controls socket 10 to be connected with power supply, normally closed solenoid valve 5, normally open solenoid valve 6 are powered, and work as turbidity
When signal transfer unit 9 controls socket 10 with power supply disconnection, normally closed solenoid valve 5, normally open solenoid valve 6 power off.
The application method of the above-mentioned initial rainwater discharge device based on Rainwater Quality control, comprises the following steps：
Step 1：The threshold value of rainwater turbidity transducer 2 is set, collection requirement or subsequent purification are met according to Rainwater Quality
It is required that design threshold size.
Step 2：After rainfall inductor 7 obtains rainfall signal, entire flow abandoning apparatus unit is triggered, normally open solenoid valve 6 is opened,
Normally closed solenoid valve 5 is closed, and rainwater passes through along 1. direction collects 4 arrival water quality detection bucket 1 of rain pipe, and the rainwater in water quality detection bucket 1 is turbid
Degree sensor 2 monitors Rainwater Quality in real time, judges rainfall moderate rain water turbidity：
If the threshold value that the rainwater turbidity of first rain sets if more than rainwater turbidity transducer 2, the first rain warp in water quality detection bucket 1
3 abandoned stream of diversion pipe is drained into sewage mouth in municipal wastewater pipeline.With the progress of rainfall, rainwater turbidity continuously decreases, and works as rainwater
When the turbidity that turbidity transducer 2 monitors in real time is not more than threshold value, Rainwater Quality meets collection requirement or subsequent purification requirement, turbid
It spends signal transfer unit 9 and exports signal, control socket 10 is connected with power supply, powers to normally closed solenoid valve 5, normally open solenoid valve 6, collects
Normally closed solenoid valve 5 on rain pipe 4 is opened, while normally open solenoid valve 6 is closed, and follow-up rainwater enters rainwater-collecting unit along 2. direction
Or rainwater purification unit.
If the rainwater turbidity of first rain is not more than the threshold value that rainwater turbidity transducer 2 is set, turbid ity signal transfer unit 9 exports
Signal, control socket 10 are connected with power supply, power to normally closed solenoid valve 5, normally open solenoid valve 6, the normally closed solenoid valve on collection rain pipe 4
5 open, while normally open solenoid valve 6 is closed, and follow-up rainwater enters rainwater-collecting unit or rainwater purification unit along 2. direction.
Step 3：When rainfall inductor 7 senses the rain stopping time, the solenoid valve 6 for collecting rainwater direction is closed, and is connected just rain and is abandoned
The solenoid valve 5 in stream direction is opened, and then whole device is restored to holding state.
Claims (2)
1. a kind of initial rainwater discharge device based on Rainwater Quality control, it is characterised in that the initial rainwater discharge device includes external abandoned stream
Device, automatic control circuit；
The external flow abandoning apparatus includes water quality detection bucket (1), rainwater turbidity transducer (2), diversion pipe (3), collection rain pipe (4)；
The rainwater turbidity transducer (2) is mounted in water quality detection bucket (1), modular assembly；Water quality detection bucket (1) bottom has out
Hole, connection collection rain pipe (4) detect for the collection of initial rainwater；One upper lateral part of water quality detection bucket (1) has a perforate, connection
Diversion pipe (3), for the higher rainwater diversion of initial stage turbidity to sewage mouth to be discharged；
The automatic control circuit transfers for detecting rainfall information with turbid ity signal, is transferred including rainfall inductor (7), turbid ity signal
Unit (9), power supply, socket (10), normally closed solenoid valve (5) and normally open solenoid valve (6)；The socket (10) is arranged on circuit box 8
It is interior；The rainfall inductor (7) and rainwater turbidity transducer (2) are connected by circuit with turbid ity signal transfer unit (9),
Rainfall inductor (7) rest on the ground to sense rainfall, and rainwater turbidity transducer (2) is turbid for detecting rainwater turbidity in real time
Degree signal transfer unit (9) is arranged in circuit box 8, and the rainwater turbidity information measured according to rainwater turbidity transducer (2) controls
Socket (10) is connected with power supply, the opening and closing of control normally closed solenoid valve (5), normally open solenoid valve (6), and then controls whether rainwater is abandoned
Stream；
Normally closed solenoid valve (5), normally open solenoid valve (6) be not in the case where powering, and normally closed solenoid valve (5) is closed, normally open solenoid valve
(6) when opening, rainwater is flowed into through collecting rain pipe (4) in water quality detection bucket (1)；Normally closed solenoid valve (5), normally open solenoid valve (6) power supply
In the case of, normally closed solenoid valve (5) is opened, and when normally open solenoid valve (6) is closed, rainwater directly enters collection rain through existing drainage pipeline
Collector unit or rainwater purification unit.
2. using the application method of the initial rainwater discharge device described in claim 1 based on Rainwater Quality control, it is characterised in that with
Lower step：
Step 1：The threshold value of rainwater turbidity transducer (2) is set, collection requirement is met according to Rainwater Quality or subsequent purification will
Seek design threshold size；
Step 2：After rainfall inductor (7) obtains rainfall signal, entire flow abandoning apparatus is triggered, normally open solenoid valve (6) is open shape
State, normally closed solenoid valve (5) are in off state, and rainwater reaches water quality detection bucket (1) by collection rain pipe (4), and water quality detection bucket (1) is interior
Rainwater turbidity transducer (2) Rainwater Quality is monitored in real time, judge rainfall moderate rain water turbidity：
If the threshold value that the rainwater turbidity of first rain sets if more than rainwater turbidity transducer (2), the first rain warp in water quality detection bucket (1)
Diversion pipe (3) abandoned stream is drained into sewage mouth in municipal wastewater pipeline；With the progress of rainfall, rainwater turbidity continuously decreases, and works as rainwater
When the turbidity that turbidity transducer (2) monitors in real time is not more than threshold value, Rainwater Quality meets collection requirement or subsequent purification requirement,
Turbid ity signal transfer unit (9) exports signal, and control socket (10) is connected with power supply, normally closed solenoid valve (5), normally open solenoid valve
(6) it is powered, normally closed solenoid valve (5) is opened, while normally open solenoid valve (6) is closed, and follow-up rainwater directly enters rain through existing pipeline
Water collector unit or rainwater purification unit；
If the rainwater turbidity of first rain is not more than the threshold value of rainwater turbidity transducer (2) setting, turbid ity signal transfer unit (9) output
Signal, control socket (10) are connected with power supply, and normally closed solenoid valve (5), normally open solenoid valve (6) are powered, and follow-up rainwater enters rainwater
Collector unit or rainwater purification unit；
Step 3：When rainfall inductor (7) senses the rain stopping time, turbid ity signal transfer unit (9) output information, socket (10) with
Power supply disconnects, and normally closed solenoid valve (5), normally open solenoid valve (6) power-off, normally open solenoid valve (6) are opened, and normally closed solenoid valve (5) is closed,
Whole device is restored to holding state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711376977.3A CN108104248A (en) | 2017-12-19 | 2017-12-19 | A kind of initial rainwater discharge device and its application method based on Rainwater Quality control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711376977.3A CN108104248A (en) | 2017-12-19 | 2017-12-19 | A kind of initial rainwater discharge device and its application method based on Rainwater Quality control |
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Family
ID=62210201
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108939625A (en) * | 2018-09-05 | 2018-12-07 | 上海市绿化管理指导站 | Early period rainwater purification system and method |
| CN109594638A (en) * | 2019-01-24 | 2019-04-09 | 杭州长德自控设备有限公司 | Rain sewage diversion device and method |
| CN110183036A (en) * | 2019-05-20 | 2019-08-30 | 北京都润生态环境工程有限公司 | A kind of rainwater detects purification system automatically |
| CN110241907A (en) * | 2019-06-19 | 2019-09-17 | 上海上涵自动化科技有限公司 | A kind of storm-water system and method |
| CN111068369A (en) * | 2019-12-20 | 2020-04-28 | 仇爽 | Movable thickener |
| CN111593632A (en) * | 2019-02-21 | 2020-08-28 | 潘振建 | Intelligent sponge road |
| CN114687411A (en) * | 2022-04-11 | 2022-07-01 | 南华大学 | Domestic water tank for removing hardness of underground water and water supply control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108939625A (en) * | 2018-09-05 | 2018-12-07 | 上海市绿化管理指导站 | Early period rainwater purification system and method |
| CN109594638A (en) * | 2019-01-24 | 2019-04-09 | 杭州长德自控设备有限公司 | Rain sewage diversion device and method |
| CN111593632A (en) * | 2019-02-21 | 2020-08-28 | 潘振建 | Intelligent sponge road |
| CN110183036A (en) * | 2019-05-20 | 2019-08-30 | 北京都润生态环境工程有限公司 | A kind of rainwater detects purification system automatically |
| CN110241907A (en) * | 2019-06-19 | 2019-09-17 | 上海上涵自动化科技有限公司 | A kind of storm-water system and method |
| CN111068369A (en) * | 2019-12-20 | 2020-04-28 | 仇爽 | Movable thickener |
| CN114687411A (en) * | 2022-04-11 | 2022-07-01 | 南华大学 | Domestic water tank for removing hardness of underground water and water supply control method thereof |
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Application publication date: 20180601 |