The present invention provides a storm water pretreatment chamber. The storm water pretreatment chamber includes: a base, an inlet sidewall, a first sidewall, a second sidewall, a filter sidewall, a handle, a first locking mechanism, a second locking mechanism, a first lifting cable, and a second lifting cable. Methods of treating storm water are also provided.

A system for cleanup of coal ash mixed with water from an original settling pond comprises a dredge configured to lift the coal ash mixed with water from beneath the water level, a transport line configured to receive the coal ash mixed with water from the dredge and move the coal ash mixed with water out of the original settling pond, and at least one designed dewatering cell configured to receive the coal ash mixed with water from the transport line. A bulk solids handler is configured to remove the coal ash from the dewatering cell after a predetermined portion of the water has been removed, and a conveyor is configured to receive the removed coal ash from the bulk solids handler and transport the coal ash to a predetermined delivery point.

Laundry, industrial or food processing wastewater is purified to the degree that it can be reused. Water quality is ensured through the final process of reverse osmosis (“RO”) which removes dissolved contaminants such as mineral hardness, soils and residual detergents. The process combines a ceramic tubular cross-flow membrane filter to remove the suspended solids, oils and greases ahead of the RO. The RO process employs high temperature, low fouling membranes. This enables the RO process to operate sustainably, i.e. without fouling, plugging or membrane degradation.

A method and apparatus for the separation of gas and liquid-solid slurry under pressure, and passage of the liquid-solid slurry to an atmospheric discharge.

An automatic sampling device (autosampler) is provided for continuous water sample collection and visual inspection for the presence of particulate solids in water sources. The autosampler is capable of collecting larger water samples, over a longer period of time, than typical inline monitoring and sampling methods. This provides more accurate information regarding the presence and concentration of particulate solids in the water sample as compared to most inline methods. More particularly, the autosampler includes a plurality of plastic pellet and powder capture nets (P3CNs), each of which is designed with nested nets for catching and retaining particulate solids of sequentially diminishing particle size along the flow path of the water sample. This enables easy determination of the presence of particulate solids, as well as a quick assessment of the different sizes of particulate solids present in the water samples by visual inspection of the P3CNs.

A method and an apparatus for receiving manure from a vacuum truck, as that manure is collected from alleys of a dairy barn, includes receiving the manure in a mixing basin. The received manure is diluted in the mixing basin with a jet of water discharging a sufficient volume of water to form a sand-laden manure flow having a velocity of over 3 feet per second and dilute the received manure into a sand-laden manure suspension of less than seven percent manure solids. The resulting sand laden manure suspension is conducted into a vestibule of a sand settling lane to slow the flow of the sand laden manure suspension to enter a sand settling lane at a velocity of less than 1.25 feet per second. Sand is collected in the sand settling lane. Gravity urges the sand from the sand-laden manure suspension as it flows through the sand settling lane.

An apparatus for removing sediment from a pond includes: a handle; a vacuum unit connected to the handle, said vacuum unit having a first opening adapted for receiving material sucked into said opening and a second opening for material sucked into said vacuum unit to exit at a point outside said pond, said vacuum unit being submersible, supported by at least one wheel, and having an aperture for receiving a mixture from a bottom of the pond; a hose associated with said second opening; and a storage container, said storage container having a body and a storage film cartridge adapted to be positioned in said body, said cartridge having storage film therein, said storage film being permeable to water and having a mesh, and a sealing mechanism having an actuator operably connected to said cartridge, wherein actuation of said actuator rotates said cartridge causing said storage film to seal.

A system for cleaning feed water of variable quality, the system comprising an inlet for selectively delivering feed water to one or other of at least two feed chambers, each feed chamber having a delivery pipe for delivering feed water to a reverse osmosis or nanofiltration; a pump to deliver the feed water from one of the chambers through its associated delivery pipe to the reverse osmosis or nanofiltration to create a concentrated feed stream and a product water stream; return pipes for selectively returning the concentrated feed stream to one or other of the at least two feed chambers; a product water outlet for removal of the product water; and means for switching the delivery of the concentrated feed stream between the selectable return pipes upon detection of a predetermined reduction in efficiency within one or another of the feed chambers.

Systems and methods can support an autonomous pool skimming system. The pool skimming system may have a body with two or more hulls. Two or more paddlewheels may be coupled to the body. An independent motor may drive each paddlewheel. The motors may be independently controllable to support steering. The pool skimming system may have one or more processing units, two or more distance sensors, one or more solar cells, and a power supply operable to power the processing units and the motors from energy supplied by the solar cells. One or more processing modules may configure the processing units to plan and execute a traversal path across the surface of a body of water, such as a swimming pool, to collect debris into a removable basket. A portion of the traversal path may be established according to signals from distance sensors.

A saturated layer stormwater filtering system with down-flow layered multimedia filters is disclosed. The filtering system may include an upflow pretreatment chamber and a subsequent filtration chamber. It also includes a snorkel pipe as an adjustable head control or internal baffles. The system incorporates gravity powered partially saturated stormwater media filters to harness the potential energy of stormwater from downspouts and pumped flows from stormwater catchments to drive the polluted stormwater in a hydraulically controlled fashion by gravity through a series of filter media layers.