A subterranean irrigation system (100) has a plurality of fluid conduit (130) for applying a liquid from a source to an area of ground, to which said liquid is to applied while avoiding interference with the above-ground use of such area, wherein the fluid conduits (130) are connected (140; 500) relative to one another and wherein the plurality of fluid conduits (130) comprise a plurality of outlets to effect the distribution of the liquid to the ground area, wherein the plurality of outlets (600;621, 622, 623; 800; 821, 822, 823) are provided at an underside (602, 802) of a nose-shaped spout attachment (600, 800), wherein the spout attachment (600; 800) is attached at the side in the upper half of the fluid conduit (130; 230; 720) and wherein the underside (602; 802) comprises a rounded surface starting tangentially from the outer diameter of the fluid conduit (130; 230; 720) and ends in the nose-shaped free end of the spout attachment (600; 800).

Described herein is a method of controlling soil moisture, water accumulation and fertilizer distribution in land. Elevation location data for land areas are extracted from two or more pixels of a topographic image including topographic data. Each pixel represents a land area. Wetness indices for the land areas are determined from the elevation and location data, based on the slope between two or more defined areas of land and an upslope contributing area per unit contour length. At risk defined areas of land, e.g., those at risk of accumulating water are identified based on wetness indices. Water is transported from the at risk defined areas of land to another location. The transporting of water reduces the risk of accumulating water in the at risk defined areas of land and improves crop growth potential in those areas.

A mobile fabrication solution for onsite assemblage of earth drains for ground stabilization that includes a despooling carousel for uncoiling corrugated tubing from a stock supply, and for feeding the stock tubing into an extrusion head unit. The head unit contains counter-rotating wheels that grip and drive the tubing out through a collet into a filter sock and into a collection trough. One end of a stock supply of fabric filter sock is attached to the collet exteriorly of the head unit to the collet and is unrolled along the trough. When the corrugated tubing is ejected it fills the sock within the trough and may be cut to the desired length onsite, eliminating waste.

There is provided a plastic infiltration unit comprising: a top deck, at least one pillar extending from the top deck, wherein the at least one pillar includes a plurality of compartments, wherein at least one of the compartments is laterally enclosed, and wherein the top deck and the at least one pillar are produced in one piece. There is further provided a plastic base plate for use with a plastic infiltration unit. There is further provided a plastic infiltration unit side plate. There is yet further provided a plastic infiltration system for deployment underground comprising a plastic infiltration unit and a plastic base plate, wherein the at least one pillar of the plastic infiltration unit is received at the receiving location of the plastic base plate.

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.

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 low-profile fluid collection conduit includes an elongate outer cover having an upper portion and a lower portion generally opposite the upper portion, with the outer cover being much wider than it is tall and defining an interior volume. An elongate rigid spacer is fitted within the interior volume of the elongate outer cover, with the elongate spacer allowing the majority of the interior volume to be unfilled so as to permit the flow of fluid along and within the elongate outer cover. The collection conduit is used with a fluid-impermeable membrane as part of a landfill fluid collection and conveyance system.

A quick-fit self-priming drain pipe, comprises at least two pipes and at least a joint pipe for connecting several pipes. The surface of the pipe is surrounded with several endlong extended slots in the axial direction of the pipe. From the end face of the pipe, the slot comprises a trench hole and a slot opening from inside to outside. The outer surface at the end of the pipe is surrounded with several locating holes. The joint pipe has at least two through holes corresponding to one end of pipe, and its inner surface is surrounded with several locating pieces corresponding to the locating holes. Hereby, the construction operation is simplified, and the working efficiency and draining efficiency are increased greatly.

A soil densification system and method is disclosed. The presently disclosed soil densification system includes an air delivery probe or pipe that can be driven or otherwise installed into a soil mass. An inlet of the air delivery probe is supplied by an air compressor and an air storage tank, which are used for the rapid delivery of air impulses or bursts into the air delivery probe, whereas the air impulses or bursts are expelled out of an outlet of the air delivery probe and into the soil mass. The method of using the presently disclosed soil densification system includes the steps of inserting the end of the air delivery probe into the soil mass to any desired depth and then releasing an impulse or burst of air into the soil mass, thereby forming a densified region in the soil mass via the forces of the air impulse.

Fluid flow enhancing devices disclosed herein are adapted to enhance flow of fluid through subsurface watershed conduits, for example, culverts, drainpipe and the like. Such fluid flow enhancing devices advantageously enhance watershed runoff functionality in subsurface watershed conduits by altering watershed flow from a parabolic flow pattern to a rotational flow pattern while still accommodating fish passage requirements. This change in flow pattern beneficially provides turbulence that disrupts and flushes debris out of the subsurface watershed conduits. This disruption and flushing establishes a passive cleaning functionality within the subsurface watershed conduits that serves to clean the subsurface watershed conduits after suitable upstream water delivery event (e.g., heavy rain, controlled water release, etc.). In doing so, these fluid flow enhancing devices overcome one or more shortcomings associated with subsurface watershed conduits in a manner that overcomes drawbacks associated with conventional design and in-use considerations for such subsurface watershed conduits.