Hydraulic and earth engineering – Fluid control – treatment – or containment
Patent
1993-08-03
1996-04-30
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
210164, 210165, 405 36, E02B 1300
Patent
active
055119042
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to storm water or sewage disposal systems and more particularly to such systems that filter and discharge water into the ground.
BACKGROUND ART
Urban development necessarily covers a substantial proportion of the surface of the ground with buildings, adjacent parking areas and interconnecting roadways. Subsequent to a rainstorm the consequences of this development are manifested in higher peak runoff volumes, increased turbidity and pollution in runoff water, decreased water infiltration into the ground, increased pollution in receiving water bodies, flooding problems within waterways and even changes in the subsurface water level.
One study estimated that while 40% of rural rainfall was absorbed into the ground prior to urban development, as little as 10% of urban rainfall is now so absorbed.
Accordingly, the conveyance and disposition of increased and more polluted volumes of storm sewage is one of the major considerations that both a developer and an urban government must grapple with when contemplating urban development.
Storm sewage systems in the past have employed drainage wells to put storm water back into the ground. An example of this is shown in Austrian Patent No. AT-B-347 864. A filter is shown in this patent to avoid polluting the ground water. However, a long, vertical, tubular filter is disclosed which would easily plug-up, and in any event, the storm water would not be filtered uniformly because of the difference in static pressure or head from the bottom to the top of the filter.
German patent No. DE-U-8 236 344 shows a filter located in a well, but most of the filter is submerged and storm water is free to run over the top and bypass the filter. As a result, the filter would not be very effective.
DISCLOSURE OF INVENTION
According to the invention, there is provided a structure for filtering contaminated fluid comprising a surge basin for receiving the surface water and a filter funnel mounted to the surge basin. The funnel includes a top end having an intake opening for receiving the surface water from the surge basin, a central portion having sidewalls, and a bottom end having a discharge opening leading directly to the storm sewage receptor. A unitized filter means is positioned within the central portion of the funnel for removing contaminants from the surface water flowing therethrough. And the filter funnel includes filter support means positioned below a portion of the filter means for supporting the filter means in the filter funnel.
According to another aspect of the invention, there is provided a structure for filtering and discharging storm water into an aquifer characterized by a surge basin for receiving the storm water, a non-porous funnel tube mounted to the surge basin and disposed in a well hole leading to the aquifer, so that all storm water entering the aquifer passes through the funnel tube. The funnel tube has an intake opening and a discharge opening for discharging the storm water into the aquifer. A removable filter means is located in the funnel tube and extends transversely between the funnel tube sidewalls, so that all storm water entering the intake opening passes through the filter means to the discharge opening.
BRIEF DESCRIPTION OF DRAWINGS
This invention is illustrated in particular and in a preferred embodiments in which:
FIG. 1 is a perspective cross-sectional view of a structure for filtering a contaminated fluid;
FIG. 2 is a partial cross-sectional view of the structure of FIG. 1 located in a manhole;
FIG. 3 is a plan view of a bag containing filter material;
FIG. 4 is an elevational view, partly broken away, of the bag shown in FIG. 3;
FIG. 5 is a cross-sectional view of a filter basket for multiple filters;
FIG. 6 is a plan view of a filter basket for a singular filter material;
FIG. 7 is a cross-sectional view taken along lines "7--7" of in FIG. 6; and
FIG. 8 is a perspective view of a hook assembly.
MODES FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective cross-sectional view, of a structure f
REFERENCES:
patent: 122209 (1871-12-01), Ashman et al.
patent: 530816 (1894-12-01), Wright
patent: 1749878 (1930-03-01), Fleming
patent: 2048140 (1936-07-01), Renfrew et al.
patent: 2615526 (1952-10-01), Lane
patent: 3037631 (1962-06-01), Drehmann
patent: 4199272 (1980-04-01), Lacey
patent: 4419232 (1983-12-01), Arntyr et al.
patent: 4520852 (1985-06-01), Klein
patent: 4957389 (1990-09-01), Neathery
patent: 5037541 (1991-08-01), Ruey-Jang et al.
patent: 5284580 (1994-02-01), Shyh
patent: 5297367 (1994-03-01), Sainz
Lipsitz Barry R.
Taylor Dennis L.
LandOfFree
Storm water infiltration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Storm water infiltration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storm water infiltration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-624126