A turbulating apparatus for a drywell includes a frusto-conical sidewall having an upstream inlet and an opposed downstream outlet. The sidewall has an inner surface on which a plurality of vanes are fixed and extend helically between the inlet and outlet. The apparatus hangs from a top of the drywell and turbulates water to prevent the aggregation of debris inside the drywell.

Systems, devices, and methods for providing nutrient removals in an up flow filtration storm water system for treating water to very high clean levels using filtration media. A filtration media can be supported by a screen above a floor in a vault allows for incoming storm water to pass into a void space above the floor into the screen and filtration media and then out an outlet to the vault. The filtration media can include recyclable and/or natural particles. Layers of river rocks can be placed on top of and below the filtration media. The captured debris can drop to the floor. The long lasting filtration media can be cleaned by being backwashed.

A removable catch basin filter insert includes a filter container is fitted into a catch basin in the ground at the location where the stormwater exits the gutter and enters the stormwater sewer system. The removable catch basin filter provides pollution capture from stormwater while being easily cleaned. A hinged cover is included at the top of the filter insert to allow the captured pollutants to be evacuated through the use of a vehicle or being tipped nearly upside down by a mechanical arm. A hinged trap door is included at the bottom of the filter insert to allow captured pollutants to be evacuated through the bottom of the device and into a container. By capturing the pollutants with the removable catch basin filter insert before the pollutants enter the mainline storm drain system, clean storm drain systems are provided allowing for cleaner waterways.

The subject of the application relates generally to the field of drainage elements, typically drainage channels, and covers thereof, as well as mixtures for production of such covers. Embodiments may include drainage element covers, meeting functional (water permeability, slip resistance, abrasion resistance, hygienic safety, strength, resistance to frost, etc.) as well as aesthetic requirements, and which would be suitable for applications in exteriors as well as interiors, and further propose a mixture for production of such drainage element covers. Functional and aesthetic requirements may be achieved by means of a mixture for producing drainage element covers, comprising aggregate and/or milled glass pulp and binder, and further comprising thixotropic additive.

A filtration apparatus for use with drainage structures and a method for installing the same are provided. The filtration apparatus has a first grate and a second grate, which, when installed and secured together, establish a filtration barrier between the inlet and bottom of a drainage structure for filtering stormwater runoff entering the drainage structure. The first grate and second grate are secured to internal walls of the drainage structure via anchoring members. The anchoring members allow each of the grates to rotate to facilitate transition of each grate from a hanging to a suspended position. A connecting member secures the first grate and the second grate together so that the grates bisect the cavity of the drainage structure.

The present invention relates to a device (1) for filtering storm water inside a storm drain. The device (1) comprises a filter unit (2), a metal capturing ballast unit (6), and a floating carrier (4) for carrying the filter unit and the metal capturing ballast unit (6). Whereby, in use, the device (1) is arranged in a floating condition in the storm water of the storm drain. The filter unit (2) is at least partially arranged above a surface (5) of the storm water, and the metal capturing ballast unit (6) is arranged below the surface (5) of the storm water. The metal capturing ballast unit (6) comprises a solid material for capturing metal and providing ballast.

Provided is a non-point pollutant source treatment apparatus. The non-point pollutant source treatment apparatus includes an inlet pipe for allowing initial polluted rain (raw) water to flow therethrough, a settling tank coupled to the inlet pipe and storing raw water flowing from the inlet pipe, a drain part disposed at one side of an inside of the settling tank directly under the inlet pipe, and coupled to a drain pipe so as to discharge raw water contained in the settling tank into the outlet pipe, a purifying member disposed at the other side of the settling tank and including purifying plates with inlet holes, a filtering part coupled to an upper portion of the settling tank and filtering foreign substances from raw water, and a backwashing tank coupled to an upper portion of the filtering part and including a purified water pipe.

A filtration system having a malleable compartment and a handle. The malleable compartment has a permeable fabric forming an exterior of the malleable compartment. The exterior at least partially faces a contaminated fluid. The permeable fabric has a pore size that defines the permeability of the fabric. The malleable compartment also has an interior that holds an interchangeable microfiltration medium. The microfiltration medium has a pore size that is smaller than the pore size of the permeable fabric. The filtration system also included a handle that is affixed to the malleable compartment.

A device for detecting the presence of hydrocarbon fluid in runoff water includes an outer canister and a cartridge situated within the outer canister. The cartridge includes a pre-filter, at least one containment vessel, a diffuser/separator member situated within the containment vessel, a hydrocarbon fluid accumulator and an electronic circuit. The diffuser/separator member slows the flow of runoff water entering the containment vessel so that oil in the runoff water separates from and rises to the surface of the water where it accumulates in the hydrocarbon fluid accumulator. A sensor situated in the hydrocarbon fluid accumulator detects the accumulated oil and sends a signal to the electronic circuit which, in turn, closes a valve and prevents water from flowing through an egress opening in the outer canister.

There is disclosed a water treatment apparatus for treating stormwater, the water treatment apparatus comprising a volume of filter media, a baffle and an inlet conduit. The baffle extends upwards from the volume of filter media and defines a pre-treatment zone on one side of the baffle and a treatment zone on an opposing side of the baffle. The inlet conduit opens into the pre-treatment zone and is separated from the treatment zone by the baffle. The baffle is configured to regulate a flow of stormwater received via the inlet conduit by controlling the passage of stormwater from the pre-treatment zone to the treatment zone.