A kind of inlet for stom water with peak clipping dirty removal capacities
Technical field
The present invention relates to a kind of inlet for stom water, especially relate to a kind of inlet for stom water with peak clipping dirty removal capacities.
Background technology
Rainwater is the important step of city and regional water circulation, and to improving the ecological environment, adjustment, supplementary regional water play a part very crucial.Along with raising and the economic fast development of the urbanization level, urban rainwater problem all the more outstanding, main manifestations is that Urban Flood Waterlogging takes place frequently, rainwater runoff pollution serious, urban water-body water quality deterioration, rainwater resource loss etc.Inlet for stom water is structure Storm Sewer System or combined sewer being collected rainwater, is again the first passage that city surface source pollution enters water body environment.Tradition inlet for stom water mainly comprises shutter grate, pit shaft and connecting pipe three part, and have discharging capacity strong, advantages of simple structure and simple is the conventional facility of rainwater-collecting.But inlet for stom water function singleness and very easily block, cannot recharge of groundwater, cannot dam to the large Initial Runoff of pollutant kind majority amount carried causes the deficiency such as water body environment pollution and Wastewater Treatment Plant's load increase to govern the further utilization of inlet for stom water always.
Research shows, inlet for stom water is the important channel that surface flow pollutant enters city.People's researchs such as MorrisonGM think that inlet for stom water is the potential source of city non-point source (not having the pollution sources in fixed discharge place), can contribute a large amount of runoff pollution loads; And appropriate design inlet for stom water can not only dam to Runoff contaminants effectively, flood can also be reduced.MemonFA etc. have carried out hydraulic analogy with regard to inlet for stom water to the control of Runoff, and result of study shows, carrying out improvement to rain inlet structure effectively can retain pollutant.The research of TenVeldhuisJAE etc. finds, the flood of 79% is shone into because inlet for stom water blocks, and only 5% due to catchment, and appropriate design inlet for stom water is one can effectively expand drainage system ability, reduces the strategy of flood probability.
Summary of the invention
Technical problem to be solved by this invention, just be to provide a kind of inlet for stom water with peak clipping dirty removal capacities, can effectively prevent inlet for stom water from blocking, dam early-stage rainwater and can cutting down flow mode, reduce the pollution load of Wastewater Treatment Plant, avoid water body environment to be subject to severe contamination.
Solve the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
A kind of inlet for stom water with peak clipping dirty removal capacities, comprise the rain covering waterproof wall-shaped pit shaft outfall to comb, pit shaft lower end is communicated with storm sewer, it is characterized in that: described waterproof wall-shaped pit shaft outfall is less than rain and combs, and described waterproof wall-shaped pit shaft is provided with macadam, permeable stainless steel hole wall layer outward successively.
On the basis of the above, the present invention can also improve further:
Described permeable stainless steel hole wall layer is provided with again grains of sand layer outward successively and contains non-woven fabrics permeable stainless steel sift platform hole wall layer.
The periphery that described rain is combed below is lined with pad, makes rain comb leave space with the end face of macadam.
Enclosed containing non-woven fabrics permeable stainless steel sift platform hole wall, just form a permeable stainless steel sift platform main body, rain on it is combed and is formed initial filter component, macadam forms just rain peak clipping scrubbing component, grains of sand layer and forms seepage flow component, porous stainless steel is sieved platform and is divided into Chu Yu initial filter district 2, first rain peak clipping scrubbing district 3, first rain vadose region 4 and storm-water drainage district 5 by described initial filter component, first rain peak clipping scrubbing component, seepage flow component and waterproof wall-shaped inlet for stom water, and initial filter component, first rain peak clipping scrubbing district, first rain vadose region, storm-water drainage district are interconnected.
Below the course of work of the present invention is described:
The present invention is with rainfall interception Initial Runoff for main purpose, and initial rainfall run-off equivalent is in 7 millimeters of amount of precipitations.When rainfall is less than 7 millimeters, first initial stage surface flow in water catchment area enters the Chu Yu initial filter district 2 of inlet for stom water, Large stone pollutant is retained by circular cast iron casting rain comb 21, then initial stage surface flow enters just rain peak clipping scrubbing district 3, first rain peak clipping scrubbing district 3 medium stone 31 is containing certain porosity, on the one hand initial stage surface flow is filtered, initial stage surface flow can be saved on the other hand, in addition the specific area that described rubble 31 is larger, can be the growing environment that all kinds of microbial growth provides good, organics removal can be played, nutriment, the object of all kinds of pollutant such as oils and heavy metal, reduce Initial Runoff to pollute.
The surface flow entering just rain peak clipping scrubbing district 3 diffuses into just rain vadose region 4 by permeable stainless steel hole wall 32 toward surrounding, the grains of sand 41 in first rain vadose region continue to carry out filtration to initial stage surface flow and retain, remove the effects such as Runoff contaminants, initial stage surface flow after the grains of sand 41 act on recharges underground, recharge of groundwater resource through the permeable stainless steel sift platform hole wall 42 containing non-woven fabrics.
When rainfall is greater than 7 millimeters, the initial stage surface flow part entering just rain peak clipping scrubbing district 3 recharges underground through first rain vadose region 4, and another part, with the increase of flow mode, fills up rubble 31 hole gradually, enters just rain overflow place 33.The Initial Runoff liquid level of rain overflow place originally 33, with time neat mutually containing waterproof wall-shaped pit shaft outfall 51 level, now reaches the peak clipping scrubbing effect to 7 millimeters of early-stage rainwater run-offs.
When flow path surface increases further, the good surface flow of water quality enters waterproof wall-shaped pit shaft outfall 51, and the surface flow entering waterproof wall-shaped pit shaft outfall 51 enters in city planting ductwork system through storm sewer 53.
The technology of the present invention is by carrying out appropriate design to traditional inlet for stom water, first initial rainfall runoff enters just rain peak clipping scrubbing district 3 and first rain vadose region 4, enter in waterproof wall-shaped pit shaft outfall 51 again, this will be conducive to reducing the pollution loading amount and flow mode that enter waterproof wall-shaped pit shaft outfall 51.Not removing only the pollutant in rainfall runoff by arranging just rain peak clipping scrubbing district 3 and initial rainfall run-off is regulated and stored, supplementing groundwater resources, improve the peak clipping dirty removal capacities of inlet for stom water.
Beneficial effect: structure of the present invention is simple, reasonable in design, by the improvement of structure effective and reasonable abandoned stream process is carried out to initial rainfall runoff, have to reduce and enter the pollution loading amount of drainage pipeline networks, alleviate the processing pressure of Wastewater Treatment Plant, cut down runoff flood peak amount, delay runoff peak value time of occurrence, recharge of groundwater resource, improves the advantages such as water body environment, contribute to the extensive use of described inlet for stom water and first rain peak clipping method for separating polluted particles, the technology of the present invention has very high practical value.
Accompanying drawing explanation
Fig. 1 is structure cross-sectional schematic of the present invention;
Fig. 2 is the top view of Fig. 1.
In figure: 1-rain comb pad, 2-Chu Yu initial filter district, 21-rain is combed, 3-is rain peak clipping scrubbing district just, 31-macadam, 32-permeable stainless steel hole wall layer, 33-is rain overflow area just, 4-is rain vadose region just, 41-grains of sand layer, and 42-is containing non-woven fabrics permeable stainless steel sift platform hole wall layer, 5-storm-water drainage district, 51-waterproof wall-shaped pit shaft outfall, the waterproof wall-shaped pit shaft of 52-, 53-storm sewer.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described:
Refer to Fig. 1 and Fig. 2, the inlet for stom water with peak clipping dirty removal capacities of the present invention, comprise the circular cast iron casting rain covering waterproof wall-shaped pit shaft 52 outfall 51 and comb 21, waterproof wall-shaped pit shaft 52 lower end is communicated with storm sewer 53, the diameter of the outfall 51 of waterproof wall-shaped pit shaft 52 is less than circular cast iron casting rain and combs 21 diameters, and outfall should be arranged in central authorities below rain comb, so just can reach the object of initial filter.In addition, the periphery below circular cast iron casting rain comb 21 is lined with pad 1, makes rain comb leave space with the end face of macadam, forms just rain overflow area 33.
Waterproof wall-shaped pit shaft 52 is outer to be provided with macadam 31, permeable stainless steel hole wall layer 32, grains of sand layer 41 successively and to contain non-woven fabrics permeable stainless steel sift platform hole wall layer 42.
Enclosed containing non-woven fabrics permeable stainless steel sift platform hole wall layer 42, formed a permeable stainless steel sift platform main body, the rain on it is combed and formed initial filter component, macadam forms first rain peak clipping scrubbing component, grains of sand layer forms seepage flow component.
Porous stainless steel is sieved platform and is divided into Chu Yu initial filter district 2, first rain peak clipping scrubbing district 3, first rain vadose region 4 and storm-water drainage district 5 by initial filter component, first rain peak clipping scrubbing component, seepage flow component and waterproof wall-shaped inlet for stom water, and initial filter component, first rain peak clipping scrubbing district, first rain vadose region, storm-water drainage district are interconnected.
Structure of the present invention is simple, reasonable in design, by the improvement of this structure effective and reasonable abandoned stream process is carried out to initial rainfall runoff, have to reduce and enter the pollution loading amount of drainage pipeline networks, alleviate the processing pressure of Wastewater Treatment Plant, cut down runoff flood peak amount, delay runoff peak value time of occurrence, recharge of groundwater resource, improves the advantages such as water body environment, contribute to the extensive use of described inlet for stom water and first rain peak clipping method for separating polluted particles, the technology of the present invention has very high practical value.