A storm water runoff and erosion control device includes a rigid frame covered by a layer of mesh material. The frame defines an interior space that is filled with filtration material. The device may be configured as a wattle having an elongated frame with a triangular cross-section. The wattle may be extended along the contour of a hill to reduce erosion, or it may be placed at the entrance to a drainage inlet to slow the velocity of, and filter sediment and contaminants from, water entering the inlet. Alternatively, the device may be a compact filter that is a cube, cylinder, sphere, or other suitable geometry. A plurality of these compact filters may be placed in the basin of a storm water drain, and piled sufficiently high to cover the outlet from the basin. Thus, all the water in the basin must pass through the compact filters before exiting.

Stormwater runoff and erosion control devices include carpets or blankets, wattles, and compact drainage filters. A carpet or blanket is a sheet of mesh material having a border formed of a different material than the mesh material. Wattles and compact drainage filters include mesh material supported by a rigid frame. In preferred embodiments, the mesh material includes biochar or activated carbon. Blankets and carpets may be positioned above or suspended below drainage grates in a storm water runoff system, and held in place by magnets. Wattles may be placed on hillsides, or between concrete barriers and drainage grates. Compact drainage filters may be placed at the outlets of catchment basins.

Stormwater runoff and erosion control devices include carpets or blankets, wattles, and compact drainage filters. A carpet or blanket is a sheet of mesh material having a border formed of a different material than the mesh material. Wattles and compact drainage filters include mesh material supported by a rigid frame. In preferred embodiments, the mesh material includes biochar or activated carbon. Blankets and carpets may be positioned above or suspended below drainage grates in a storm water runoff system, and held in place by magnets. Wattles may be placed on hillsides, or between concrete barriers and drainage grates. Compact drainage filters may be placed at the outlets of catchment basins.

A soil drainage device includes a host, at least one water collecting assembly and a piping unit. The host includes a host housing for receiving a control module and an air pump. The water collecting assembly includes an assembly housing defining a water collecting chamber and a water reservoir chamber, and having an upper penetrating bore and a plurality of openings for entering of water into the water collecting chamber through a filter unit. The water flows into and is stored in the water reservoir chamber. At least one air conducting pipe is disposed to introduce compressed air from the air pump into the water reservoir chamber to form a pressure so as to force water flow out of the water reservoir chamber through a water draining pipe.

A soil drainage device includes a host, at least one water collecting assembly and a piping unit. The host includes a host housing for receiving a control module and an air pump. The water collecting assembly includes an assembly housing defining a water collecting chamber and a water reservoir chamber, and having an upper penetrating bore and a plurality of openings for entering of water into the water collecting chamber through a filter unit. The water flows into and is stored in the water reservoir chamber. At least one air conducting pipe is disposed to introduce compressed air from the air pump into the water reservoir chamber to form a pressure so as to force water flow out of the water reservoir chamber through a water draining pipe.

A collection tank for mounting in a bed of gravel particles under a floor of a building for collecting ground water from an area under the floor has a tank body including a lower tank portion and an upper tank portion. The lower tank portion defines a container for collected water with an open top. The upper tank portion has an outer wall upstanding from the open top of the lower tank portion, in which the outer wall is perforated with holes for passage of ground water into the tank body. Each of the holes extends radially through the outer wall of the upper tank portion at an upward slope so as to minimize entry of surrounding gravel particles into the tank body through the holes.

A collection tank for mounting in a bed of gravel particles under a floor of a building for collecting ground water from an area under the floor has a tank body including a lower tank portion and an upper tank portion. The lower tank portion defines a container for collected water with an open top. The upper tank portion has an outer wall upstanding from the open top of the lower tank portion, in which the outer wall is perforated with holes for passage of ground water into the tank body. Each of the holes extends radially through the outer wall of the upper tank portion at an upward slope so as to minimize entry of surrounding gravel particles into the tank body through the holes.

Methods, apparatus, and systems involving wastewater treatment systems are provided. The descriptions include a wastewater conduit with a pair of curved infiltrative surfaces. These curved infiltrative surfaces pass wastewater from within the conduit to outside of the conduit.

Methods, apparatus, and systems involving wastewater treatment systems are provided. The descriptions include a wastewater conduit with a pair of curved infiltrative surfaces. These curved infiltrative surfaces pass wastewater from within the conduit to outside of the conduit.

A process and associated system for the improved reclamation of disturbed lands (e.g., mined lands) is disclosed. In particular, the system including a dewatering cyclone, a screw classifier, and a dewatering apparatus (e.g. a dewatering belt) arranged in series to enable rapid and cost effective dewatering of slurries containing dilute clay and sand tailings to create an improved engineered reclamation material (ERM). The ERM formed by the controlled combining of dewatered sand tailings with dilute clay slurry and with a flocculant and overburden. The ratio of clay:sand:overburden of the ERM may be achieved by balancing the solid content (Cw) and water content (1Cw) materials of the clay slurry, sand tailings and overburden. In some embodiments, the system may include at least one additional component, such as, for example, static screen(s), centrifuge(s), vibrating screens, drum screens, belt screens, belt filters, and/or other liquid-solid separation devices.