CN1876977A - Water flow quality-divided discharge method for urban river rain and sewage mixed flow pipe network - Google Patents
Water flow quality-divided discharge method for urban river rain and sewage mixed flow pipe network Download PDFInfo
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- CN1876977A CN1876977A CN200610061376.9A CN200610061376A CN1876977A CN 1876977 A CN1876977 A CN 1876977A CN 200610061376 A CN200610061376 A CN 200610061376A CN 1876977 A CN1876977 A CN 1876977A
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Abstract
The invention relates to a water flow quality-divided discharge method of an urban river rain and sewage mixed flow pipe network, which comprises the following steps: a diversion pipeline is arranged at the outlet of the original drain pipe; the section of the diversion pipeline close to the drainage network pipe is provided with a monitoring area, and a water quality monitoring sensor is arranged in the monitoring area; the sensor is connected and transmits the monitored water flow quality data to the digital data processor; the processor processes the data to form river water quality parameters, and then the river water quality parameters are compared with the diversion critical value to control the selective diversion mechanism to determine that the water flow is discharged from a rainfall flood discharge pipe or a sewage discharge pipe of the diversion pipeline. The method can automatically identify and shunt according to the water quality: the guarantee accords with the rainfall flood delivery pipe entering river course of river water quality control target's rainfall flood, otherwise, pollutes the water and gets into the blow off pipe. Therefore, the viability of the river is protected, the flood discharge capacity of the river is exerted, and the harmony between the river and the ecological environment is kept; the system has remote monitoring and control capability for recycling urban river water quality and water resources.
Description
Technical field
The present invention relates to the method that contaminated water flow is administered in urban rainwater and the sewage mixed flow river course, particularly the water body of the dirty mixed flow pipe network of urban river rain is implemented to divide the method for matter discharging.
Background technology
At present, known city rivers pollution is administered mode and the measures such as physics, chemistry, biology of mainly containing: as cutting off from point source and pollution of area source source, contaminated streamflow biodegrade, chemical degradation being improved water quality, sewage is sent into Wastewater Treatment Plant or the like, meet different management objectives requirements to ensure streamflow water quality.
Wherein, contaminated for preventing water quality of river, most important also is that the most basic measure is to cut off the pollution source that enters the river.
Because people are restricted by developing stage to things understanding and behavior, in China, in a large amount of city rivers, it originally only is the pipe network mouth that imports the river course for surface rain, its uniqueness is destroyed, becomes the pipe network mouth of rainwater and sewage mixed flow, becomes the sewage mouth of polluted river.Therefore, there are three kinds of situations in the water quality by this class pipe network mouth inflow river course: based on contaminant water; Based on rainwater; Rainwater sewage mixed flow, but water quality meets the situation of water quality of river management specific objective.The river course also becomes three kinds of situations: sewage draining passage; Flood discharge channel; Rainwater sewage mixed flow road.
People make great efforts to build Wastewater Treatment Plant and the sewage of pollution of area source, and sanitary sewage especially is sent to the pipe network of Wastewater Treatment Plant.
Because the pollution of area source of urban river has the very big dispersiveness and the complexity of transmission pipeline network, take to disperse to cut dirty mode, Storm Sewer Network and sewage network are thoroughly separated, have difficulty greatly: time-consuming, expensive, difficulty is produced effects.In developed country's urban river, also often be finally to have 10～20% sewage to enter the river course by Storm Sewer Network.
Carry polluted-water in order to cut off to the river, so the existing method of people is to flow both sides along the river, gutter network interface at rainwater sewage mixed flow, build the centralized dirty system that cuts, rainwater and sewage are together held back, or send into Wastewater Treatment Plant in the lump, or be discharged to lower reaches of river region and waters in the lump.
But the both produces such problem: at first, cut off the river at this regional rainwater feed channel, influence the viability in river, the reduction river provides various available potentiality to the adjusting power and the river of ecological environment for people, for this reason, the people even the water intaking separately of not stinting replenish water body to the river course, to improve the river aforementioned capabilities; Secondly, the water yield of rainwater sewage mixed flow proposes more requirement for the production disposal ability of Wastewater Treatment Plant, enlarges the consumption to land resources, financial resource and manpower.
Summary of the invention
Technical problem to be solved by this invention is, in order to overcome in the existing pollution of harnessing a river, dispersion to pollution of area source cuts the dirty and concentrated weakness that dirty system exists of cutting, the method of the current branch matter discharging of the dirty mixed flow pipe network of a kind of urban river rain is provided, the pipe network outlet current of rainwater sewage mixed flow will be made, realize that three kinds of water bodys go out stream and select: walk the water body that river course and rainwater sewage mix though sewage is walked sewage conduct, rainwater, but water quality can reach water quality of river management and functional objective, also walks the river course.
The technical solution adopted for the present invention to solve the technical problems is: the method for the current branch matter discharging of the dirty mixed flow pipe network of a kind of urban river rain is provided, may further comprise the steps:
S1: the outlet section at original gutter is provided with shunt conduit, and described shunt conduit is provided with rain flood delivery pipe that is communicated with the river course and the blow-off pipe that is communicated with sewage disposal system;
S2: described shunt conduit is being provided with monitoring section near in the tube connector of described gutter; Several water quality monitoring sensors are set in described monitoring section, are used to monitor the current water quality of incoming flow;
S3: described monitoring sensor is connected to digital data processor, and some the current water quality datas that will monitor are sent to described digital data processor; Processor is handled some described water quality datas, forms comprehensive parameters of river water quality;
S4: be set with the shunting threshold in the described digital data processor, described digital data processor will contrast from parameters of river water quality and the described shunting threshold of step S3, and selects to determine that by described digital data processor control shunting selection mechanism current are from big vast delivery pipe of rain or blow-off pipe discharging.
Current at the dirty mixed flow pipe network of urban river rain of the present invention divide in the method for matter discharging, be provided with the decanting zone in the tube connector of described shunt conduit, described decanting zone is located between the outlet of described monitoring section and described gutter, is used for the impurity of sedimentation from the current of described gutter.
Current at the dirty mixed flow pipe network of urban river rain of the present invention divide in the method for matter discharging, and described shunting threshold is the threshold that meets the water quality of river management objectives; Described shunting selection mechanism is the electrically operated valve that is arranged in the described blow-off pipe;
Described step S4 may further comprise the steps:
S4-1: when described parameters of river water quality was higher than described shunting threshold, described digital data processor was controlled described electrically operated valve and is opened, and current discharge from described blow-off pipe;
S4-2: when described parameters of river water quality was less than or equal to described shunting threshold, described digital data processor was controlled described electrically operated valve and is closed, and current are discharged from described rain flood delivery pipe.
Divide among the described step S2 of method of matter discharging at the current of the dirty mixed flow pipe network of urban river rain of the present invention, form described decanting zone by first overflow weir and second overflow weir at interval is set, the height of described second overflow weir is higher than described first overflow weir.
Divide among the described step S2 of method of matter discharging at the current of the dirty mixed flow pipe network of urban river rain of the present invention, by described second overflow weir and the 3rd overflow weir the described monitoring section of formation is set at interval, the height of described second overflow weir is higher than described the 3rd overflow weir.
Current at the dirty mixed flow pipe network of urban river rain of the present invention divide in the method for matter discharging, are provided with the stream weir plate that overflows in the described rain flood delivery pipe, and described blow-off pipe is arranged on described the 3rd overflow weir and the and overflows between the stream weir plate.
Current at the dirty mixed flow pipe network of urban river rain of the present invention divide in the method for matter discharging, are provided with the desilting tube that is communicated with described blow-off pipe in bottom, described decanting zone, and the foreign material of described decanting zone arrive described blow-off pipe by described desilting tube and discharge.
Current at the dirty mixed flow pipe network of urban river rain of the present invention divide in the method for matter discharging, and described desilting tube is communicated in described monitoring section bottom simultaneously, and the foreign material of the accumulation of described monitoring section are discharged to described blow-off pipe by described desilting tube.
Current at the dirty mixed flow pipe network of urban river rain of the present invention divide in the method for matter discharging, and the outlet opening of described desilting tube is positioned at the top of the valve of described blow-off pipe, and the conveyance capacity that goes out head piece of described desilting tube comes flow less than the minimum sewage of Drain pipe network; And described desilting tube has the hydraulic gradient of the maximum sand grain of enough carrying under one's arms.
Current at the dirty mixed flow pipe network of urban river rain of the present invention divide in the method for matter discharging, described digital data processor is connected with the remote control center communication, described remote control center is in flood period, when needing, control described digital data processor and control the valve open of blow-off pipe, participate in drainning off floodwaters.
The invention has the beneficial effects as follows:, obtain data one, by water quality monitoring sensor monitors current water quality; And, obtain parameters of river water quality, and contrast with the shunting threshold by the digital data processor processing, analyze, can discern water quality automatically, shunt by water quality, regulate water body and flow to, strictness prevents that the polluted-water that does not meet river function and management objectives from entering the river course; Two, ensure that fully rainwater enters the river course in water body up to standard and the zone, section; Three, reasonably recycling water resource, protection river are protected the viability in river to the influence power of ecological environment; Four, can make river water become the part of city good environment in a short time; Five,, can realize urban river water quality, water resource is recycling and control flood and drain flooded fields integrated remote monitoring and control because system is had the data-signal remote control ability.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the generalized section of one embodiment of the present of invention.
Fig. 2 is the generalized section of the A part monitoring section of Fig. 1 according to the I-I hatching.
Fig. 3 is shunt conduit of the present invention and river channel cross section schematic diagram.
Fig. 4 is the river profile schematic diagram.
Fig. 5 is the schematic diagram of the shunt conduit of another embodiment of adopting of the present invention.
The specific embodiment
The method of the current branch matter discharging of the dirty mixed flow pipe network of urban river rain of the present invention is in the dirty mixed flow pipe network outfall of urban river rain (calling gutter in the following text) current branch matter exhaust system to be set, and realizes that current divide the matter discharging.Below in conjunction with accompanying drawing and the structure that the current of a specific embodiment divide the matter exhaust system, the present invention is made further implementation.
Outlet section at existing gutter is provided with shunt conduit.Shown in Figure 1 as the vertical section signal.In Fig. 1, the tube connector A of shunt conduit, blow-off pipe B, rain flood delivery pipe C pipe communicates, and D partly is a digital data processor independently, also can be controlled by digital remote data processing centre.
Three internal diameters of A pipe, B pipe, C pipe, all big than original gutter 30 external diameters, not only because the A bore is big, can entangles the external diameter of existing gutter, and take sealing, leak-proof measure easily; And ensure 10 mouthfuls of steel pipes not Yin Nei establish device, increase resistance, reduce original pipeline drainability.A, B, C bore size will require further to calculate to determine according to resistance coefficient and conveyance capacity.
The D part, promptly digital data processor with A, B two parts, is connected by digital data transmission line respectively.Obtain the water quality data of A pipe, the electrically operated valve of control B pipe opens and closes state and degree.
A tube portion in Fig. 1 is provided with three overflow weir and is respectively first overflow weir 1, second overflow weir 2 and the 3rd overflow weir 3.Between first overflow weir 1 and second overflow weir 2, form the decanting zone 5 of sewage foreign material, impurity; Between second overflow weir 2 and the 3rd overflow weir 3, form monitoring section 6, some sensors 7 are set in this monitoring section 6, with monitoring water quality.Second overflow weir 2 is higher than first overflow weir 1 and the 3rd overflow weir 3.
At the decanting zone 5 and monitoring section 6 steel pipes 10 tops of steel pipe 10A tube portion, for top cover 11 formulas, can open, so that cleaning deposit and maintenance, sensor installation 7.In actual engineering, the inspection shaft formula can be made in top cover 11 outsides of steel pipe 10A part.
When current enter decanting zone 5, because the height of second overflow weir 2 is higher than first overflow weir 1, thereby cause the original flow velocity of current to slow down, the carry under one's arms ability of silt and impurity of current significantly reduces, and forms effective decanting zone 5.First overflow weir 1 except constituting decanting zones 5 with second overflow weir 2 is common, and for the current that enter from pipe network system, plays energy dissipating effect in early stage.Understandable, more decanting zone can be set according to the situation of incoming flow water quality, thereby form multistage sedimentation, effectively impurity in the current or foreign material etc. are carried out sedimentation.The setting of decanting zone is the sedimentation foreign material effectively, guarantee the monitoring of environmental in the monitoring section, to obtain monitored data more accurately and reliably.
The length spacing and the discrepancy in elevation that are provided with between second overflow weir 2 and first overflow weir 1 and the 3rd overflow weir 3 are done corresponding calculating and design according to sediment transport capacity formula and sand grain sedimentation formula.Because hydraulic gradient, flow velocity and flow that each pipe network pipeline gradient difference, current enter are all inequality, the silt of carrying under one's arms is formed also different with foreign material, be that external boundary condition changes, so, it is respective change that the distance that first overflow weir 1 and second overflow weir are 2 is calculated, and the height of second overflow weir 2 also has corresponding result of calculation.Simultaneously, each size is accepted or rejected the requirement that also must take into account conveyance capacity, thereby, for each weir plate height and distance each other, need be optimized as the case may be.For this reason, each accompanying drawing can only be signal and relative scale.Only under concrete object of construction production condition, each facility just has the specific design size.
Can depending on the circumstances or the needs of the situation above second overflow weir 2, the trashrack device be set in addition.
Fig. 2 is the sectional drawing of the monitoring section 6 in the A pipe.
When current second overflow weir 2 of overflowing, because the existence of the 3rd overflow weir 3, but be formed with relatively stable depth of water water body and monitoring of environmental at monitoring section 6.
At this monitoring section 6, the leading indicator of monitoring water quality can comprise: BOD (biochemical oxygen demand (BOD)), COD (COD), SS value (suspended material value), pH value, total nitrogen, total phosphorus or the like.Which mensuration project is finally arranged, determine according to these water quality of river management objectives.
Water quality monitoring sensor 7 can be on-line real time monitoring.Therefore, 5 have conduit 8 in the decanting zone, are fixed on steel pipe 10 walls, and an end is connected with sensor mounting seat 9, and the other end is drawn steel pipe 10 top covers 11, are connected with D partial data signal processor.
The 3rd overflow weir 3 is lower than second overflow weir 2, and both spacings and the discrepancy in elevation have certain drop to guarantee current, and the turbulent flow that forms very fast flow velocity and generation sufficient intensity is design conditions, ensures that current are difficult at this monitoring section 6 sedimentations taking place.
Simultaneously, because water quality monitoring sensor mounting seat 9 is at steel pipe 10 sidewalls, be 1/2 height of the 3rd overflow weir 3, sensor 7 has stable monitored water body, is difficult for meeting with the monitoring of environmental problem.
The B tube portion is a blow-off pipe in Fig. 1, is connected with the blow-off line of sewage disposal system, is provided with electrically operated valve 12, is controlled by digital data processor D.In the present embodiment, described electrically operated valve 12 is selected the emission direction of current as shunting selection mechanism.Certainly, also can in rain flood delivery pipe, electrically operated valve be set, perhaps in blow-off pipe and rain flood delivery pipe, electrically operated valve be set simultaneously; Perhaps realize the shunting of current with other forms of shunting selection mechanism.
The C tube portion is a rain flood delivery pipe in Fig. 1, is connected with the river course, be provided with second overflow weir 2 with the high the stream weir plate 4 that overflows.The overflow height of stream weir plate 4 of the of C tube portion joins with A tube portion second overflow weir 2 height correlations, the height that overflows stream weir plate 4, and apart from the calculating of the minimum range of second overflow weir 2, according to two far fringe conditionss, one, B pipe electrically operated valve 12 is in the full open state; Its two: during the full section overcurrent of A tube portion, after current were crossed second overflow weir 2, current may be crossed the B pipe.Thereby the height and distance that overflows stream weir plate 4 needs to satisfy following requirement: prevent to flow through the water body that comes from the A tube portion, in instantaneous state, cross the B pipe, directly enter the C pipe, flow in the river course, become barrier one.
The sensor 7 of A pipe monitoring section 6 is connected with D in Fig. 1.The data that sensor 7 is gathered are transferred to the D digital data processor, and this digital data signal processor is connected with electrically operated valve 12 switches of B pipe again.Because there are three kinds of states in the current of gutter 30 source: sewage is that dirty mixed flow shape of main shape, rain and rainwater are main shape, in order reasonably to shunt the current of three kinds of states, be set with the shunting threshold among the described digital data processor D, to handle from the water quality of river data of online monitoring sensor, obtain parameters of river water quality, and, determine rain flood delivery pipe or the blow-off pipe discharging of current from shunt conduit with the parameters of river water quality and the contrast of described shunting threshold that obtain.Parameters of river water quality can be defined as: some main water quality index in the effluent flowing water matter management objectives, and through comprehensive, the integrated value of formation.The main project that comprises in the effluent flowing water matter management objectives for example: the project indicators such as BOD, COD, SS value, pH value, total nitrogen, total phosphorus, through comprehensive wherein one or some, the integrated value of formation.
The shunting threshold can be defined as: effluent flowing water matter management objectives form, the maximum value of the parameters of river water quality that the river is allowed to carry.Described shunting threshold can be used with management objectives according to difference according to different rivers and set different thresholds.For example, set different values in the different management objectives of same river different times.Perhaps in dry season or flood season, perhaps bigger, the less formation different surface of amount of precipitation runoff period, set different value or the like.
The cooperation of A, B, C pipe each several part and digital data processor D:
Water body flows into from A pipe 5 left sides, decanting zone in Fig. 1.Set: B pipe electrically operated valve 12 original states are to be in the unlatching shape.
When water body flows into A pipe decanting zone 5, sedimentation foreign material in advance; Water body after sedimentation flows into monitoring section 6, each monitoring sensor 7 monitoring image data, and the water quality of river data are sent to digital data processor handle, obtain parameters of river water quality, as long as the parameters of river water quality that the data of gathering form surpasses the threshold of initial setting, digital data processor just can not instruct B pipe electrically operated valve 12 to close; At this moment, the water body that exceeds standard flows into the B pipe as sewage.
When the parameters of river water quality of the water body that flows into the A pipe is lower than the threshold of initial setting, digital data processor will send instruction to the electrically operated valve 12 of B pipe, with valve closing; At this moment, water body up to standard will flow to the C pipe as available.
Otherwise when the parameters of river water quality of water body exceeds threshold once more gradually, digital data processor will instruct B pipe electrically operated valve 12 to open once more, and water body flows into sewage conduct.
Enter B pipe water body outlet:
Special-purpose sewage pipe 13 is buried in the riverbed of the polluted river of administering at need 14 times underground, sees Fig. 3.Enter B pipe water body, flow into special-purpose sewage pipe 13,,, deliver to Wastewater Treatment Plant by pumping plant to downstream regulating reservoir 18.
Entering C pipe water body flows to:
Enter C pipe water body and flow into the river course, see Fig. 3.From Fig. 3 as seen, the sewage by the B pipe flows out enters the sewage pipe 13 of the 14 times special uses in riverbed.The water body that only meets the water quality management target call enters the river course by the C pipe.
Circulating water pipe 15, also 14 times in the riverbed, by water pump, extract river water storage pond 16 water bodys, make it to rise to upper level or the special-purpose circulating water pipe 15 that goes of upstream inpoundment district more.
The utilization of water body up to standard in the river course:
In the river course that need are administered, be provided with in addition: circulating water pipe 15 roads; Some short dykes and dams 17 of regulating, the reservoir 16 in formation water reserve and downstream is seen Fig. 4.By water pump and circulating water pipe 15, reservoir 16 water bodys are risen to the pool, upstream step by step or directly from the downstream; Under the water body spontaneous current,, form the human landscape then by the water reserve.Go round and begin again, it is recycling to form water body.The river course downstream area is built reservoir 16, with the needs in seepage, evaporation and the cyclic process of satisfying circulating water body.As shown in Figure 4, build up some steps, adjustable dam in the river course, form adjustable water reserve; And, excavate darker reservoir 16 near place, river mouth, downstream, to store the more water body that meets management objectives, to satisfy the river dry season seepage of river water body and evaporation and the requirement that forms circulating water body.River course and water reserve, reservoir 16, special-purpose circulating water pipe 15 behind the supporting water pump facility, form together and ensure that water resource recycles system in the river course.Make streamflow become an ingredient of city good environment.
The PIPE DIAMETER CALCULATION of special-purpose soil pipe shown in Fig. 4, after should satisfying upstream and downstream zones sewage and compiling, the needs of total blowdown flow.Special-purpose soil pipe downstream is provided with regulating reservoir 18, and at regulating reservoir 18, pumping plant is sent into Wastewater Treatment Plant's pipe network to sewage, becomes the part of urban sewage treatment system.Pumping plant also is provided with the pipe 19 that drains off floodwaters, and the river course flood peak comes interim, participates in drainning off floodwaters, and joins with the downstream, river course.
Whole system in the river course based on the utilization of flood period of rainwater:
When the arriving of river flood, when needing, can be under remote data processing center control, the B pipe electrically operated valve 12 of gutter network interface is opened fully, makes blow-off pipe participate in drainning off floodwaters, and improves river flood carrying capacity and flood control standard.
The present invention will make urban river that water is arranged; The water that reaches water quality management and functional objective is arranged; Having can be for the water of repetitive cycling utilization.And make sewage under less body water amount, be transported to Wastewater Treatment Plant, improve the efficient of disposing of sewage, reduce the sewerage treatment integrated cost.
The present invention combines river engineering technology and environmental protection technology, and city rivers pollution is administered new alternative plan and mode.
As shown in Figure 5, it is the schematic diagram of another embodiment of shunt conduit, for the ease of the foreign material of decanting zone 5 can in time be removed, 5 bottom is provided with the desilting tube E that is communicated with described blow-off pipe B in the decanting zone, the foreign material of described decanting zone 5 arrive described blow-off pipe B by described desilting tube E and discharge, and other structures and a last embodiment are basic identical.Described desilting tube E is communicated in described monitoring section 6 bottoms simultaneously, and the foreign material of the accumulation of described monitoring section 6 are discharged to described blow-off pipe B by described desilting tube E.Understandable, a plurality of desilting tube E also can be set, be connected with the bottom of decanting zone 5 respectively with monitoring section 6.
The outlet opening of described desilting tube E is positioned at the top of the valve of described blow-off pipe B, and the conveyance capacity that goes out head piece of described desilting tube E comes flow less than the minimum sewage of Drain pipe network; And described desilting tube E has the hydraulic gradient of the maximum sand grain of enough carrying under one's arms.The internal diameter that can design desilting tube E according to actual conditions with and gradient, guarantee suitable conveyance capacity and hydraulic gradient.
The foreign material of decanting zone 5 and monitoring section 6 and desilting tube E, when the electrically operated valve 12 of blow-off pipe B is opened, be subjected to the drag force effect, automatically be drained among the blow-off pipe B, thereby can in time the foreign material of decanting zone 5 and monitoring section 6 be discharged, make can be not long-term in the pipeline the accumulation foreign material, influence whole system operation.Understandable, also independent valve can be set in the described desilting tube E, the row of control becomes silted up.When the foreign material of decanting zone 5 or monitoring section 6 were stacked into to a certain degree, by-pass valve control was opened, and arranges silt.The control of described valve can also can be controlled by digital data processor D by manually control.
Claims (10)
1. the current of the dirty mixed flow pipe network of urban river rain divide the method for matter discharging, it is characterized in that, may further comprise the steps:
S1: the outlet section at original gutter is provided with shunt conduit, and described shunt conduit is provided with rain flood delivery pipe that is communicated with the river course and the blow-off pipe that is communicated with sewage disposal system;
S2: described shunt conduit is being provided with monitoring section near in the tube connector of described gutter; Several water quality monitoring sensors are set in described monitoring section, are used to monitor the current water quality of incoming flow;
S3: described monitoring sensor is connected to digital data processor, and some the current water quality datas that will monitor are sent to described digital data processor; Processor is handled some described water quality datas, forms comprehensive parameters of river water quality;
S4: be set with the shunting threshold in the described digital data processor, described digital data processor will contrast from parameters of river water quality and the described shunting threshold of step S3, and selects to determine that by described digital data processor control shunting selection mechanism current are from big vast delivery pipe of rain or blow-off pipe discharging.
2. the current of the dirty mixed flow pipe network of urban river rain according to claim 1 divide the method for matter discharging, it is characterized in that, be provided with the decanting zone in the tube connector of described shunt conduit, described decanting zone is located between the outlet of described monitoring section and described gutter, is used for the impurity of sedimentation from the current of described gutter.
3. the current of the dirty mixed flow pipe network of urban river rain according to claim 2 divide the method for matter discharging, it is characterized in that described shunting threshold is the threshold that meets the water quality of river management objectives; Described shunting selection mechanism is the electrically operated valve that is arranged in the described blow-off pipe;
Described step S4 may further comprise the steps:
S4-1: when described parameters of river water quality was higher than described shunting threshold, described digital data processor was controlled described electrically operated valve and is opened, and current discharge from described blow-off pipe;
S4-2: when described parameters of river water quality was less than or equal to described shunting threshold, described digital data processor was controlled described electrically operated valve and is closed, and current are discharged from described rain flood delivery pipe.
4. the method for dividing the matter discharging according to the current of claim 2 or the dirty mixed flow pipe network of 3 described urban river rain, it is characterized in that, in described step S2, form described decanting zone by first overflow weir and second overflow weir at interval is set, the height of described second overflow weir is higher than described first overflow weir.
5, the current of the dirty mixed flow pipe network of urban river rain according to claim 4 divide the method for matter discharging, it is characterized in that, in described step S2, by described second overflow weir and the 3rd overflow weir the described monitoring section of formation is set at interval, the height of described second overflow weir is higher than described the 3rd overflow weir.
6, the current of the dirty mixed flow pipe network of urban river rain according to claim 5 divide the method for matter discharging, it is characterized in that, be provided with the stream weir plate that overflows in the described rain flood delivery pipe, and described blow-off pipe is arranged on described the 3rd overflow weir and the and overflows between the stream weir plate.
7, the current of the dirty mixed flow pipe network of urban river rain according to claim 6 divide the method for matter discharging, it is characterized in that, be provided with the desilting tube that is communicated with described blow-off pipe in bottom, described decanting zone, the foreign material of described decanting zone arrive described blow-off pipe by described desilting tube and discharge.
8, the current of the dirty mixed flow pipe network of urban river rain according to claim 7 divide the method for matter discharging, it is characterized in that, described desilting tube is communicated in described monitoring section bottom simultaneously, and the foreign material of the accumulation of described monitoring section are discharged to described blow-off pipe by described desilting tube.
9, the current of the dirty mixed flow pipe network of urban river rain according to claim 8 divide the method for matter discharging, it is characterized in that, the outlet opening of described desilting tube is positioned at the top of the valve of described blow-off pipe, and the conveyance capacity that goes out head piece of described desilting tube comes flow less than the minimum sewage of Drain pipe network; And described desilting tube has the hydraulic gradient of the maximum sand grain of enough carrying under one's arms.
10, the current of the dirty mixed flow pipe network of urban river rain according to claim 9 divide the method for matter discharging, it is characterized in that, described digital data processor is connected with the remote control center communication, described remote control center is in flood period, when needing, control described digital data processor and control the valve open of blow-off pipe, participate in drainning off floodwaters.
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