A method of absorbing falling precipitation to prevent the falling precipitation from reaching an area for an activity includes spreading a sufficient amount of a water absorbent including superabsorbent granules over the area prior to or during the falling precipitation so that the superabsorbent granules can absorb the water before the falling precipitation can reach the area wherein the activity can immediately occur after the falling precipitation stops and the water absorbent is removed. Another method of absorbing falling precipitation to prevent the falling precipitation from reaching an area for an activity includes placing an application bag over the area prior to or during the falling precipitation, wherein the application bag includes a sufficient amount of superabsorbent granules inside a casing, wherein the superabsorbent granules can absorb the falling precipitation before the falling precipitation can reach the area, and wherein the activity can immediately occur after the falling precipitation stops and the application bag is removed.

An elevator pit having a waterproof cement floor and method for installing the same. The elevator pit includes a jack casing and a drainage pit installed within the elevator pit. A trench is formed in exposed ground surface and defines a channel having a first end positioned at an area that is susceptible to water accumulation within the elevator pit and a second end terminating at the drainage pit. A perforated conduit extends within the channel with an end terminating at the drainage pit. A layer of gravel is disposed over the exposed ground surface and trench at a predetermined height to cover the perforated conduit. A layer of waterproof cement is provided over the ground surface at a predetermined height to cover the gravel, channel and perforated conduit to form the waterproof cement floor which extends across an entire periphery of the elevator pit.

The invention provides a modular rain garden system comprising a plurality of preformed channel sections 310 and two end panels 320. The channel section 310 and end panels 320 are configured to form a trough 300 when assembled to receive rainwater runoff. At least one end of the channel section has an engaging profile configured to engage with another channel section or one of the end panels. Divider panels 330 are provided to separate the trough into compartments, to provide additional strength or rigidity to the trough or to control or limit the flow of water between compartments. The side walls 312 of the channel sections, the end panel 320 and the divider panels 330 are corrugated by means of projections or grooves 313, 321 and 331 respectively to increase the strength and load-bearing capability of the components.

A system, methodology, and programming logic for active stormwater controls to optimize sizing and design of Hydromodification Management (HM) structural Best Management Practices (BMPs) to achieve optimal flow duration control. Control logic enables the controlled release of stormwater from a BMP in a manner most akin to pre-development flow duration curves. Inputs to this logic include: flow duration curves based on continuous hydrologic simulation for pre- and post-development conditions; real-time measurement of water level within the BMP; and real-time measurement of discharge entering the BMP. This control logic can interact with control logic for other stormwater management objectives, such as harvest and reuse, infiltration, and combined sewer overflow prevention, and respective inputs, such as real-time weather forecast data, precipitation gage data, downstream flow gauge data, and water quality data, to meet those design objectives as well. New HM BMPs can be optimized to be smaller and, thus, more feasible to implement. Existing stormwater facilities designed for flood control or other management objectives can be retrofitted to provide hydromodification control as well. When utilized with real-time flow and water level monitoring equipment and data, the flow release logic can be adaptively adjusted without physical retrofit of the BMP's outlet.

A system and method for treating contaminated water are provided. The system can include one or more collecting basins for collecting water, such as rain water, runoff water, etc. The system can further include one or more containment basins, one or more polishing basins, and a pumping system for moving water through the system. The containment basins and polishing basins can utilize techniques for reducing a contaminant concentration in the water. The system can further include a source for adding process water to the system and combining it with the collected water to form a system water in order to reduce a contaminant concentration in the system water and accommodate higher volumes of collected water and/or higher pollutant concentrations therein. The system can also include an ultraviolet emitting device and/or a heating device for reducing the level of living bacteria in the system water.

A system and method for treating contaminated water are provided. The system can include one or more collecting basins for collecting water, such as rain water, runoff water, etc. The system can further include one or more containment basins, one or more polishing basins, and a pumping system for moving water through the system. The containment basins and polishing basins can utilize techniques for reducing a contaminant concentration in the water. The system can further include a source for adding process water to the system and combining it with the collected water to form a system water in order to reduce a contaminant concentration in the system water and accommodate higher volumes of collected water and/or higher pollutant concentrations therein. The system can also include an ultraviolet emitting device and/or a heating device for reducing the level of living bacteria in the system water.

The invention pertains to a float switch apparatus for use in activating one or a series of pumps. The float switch apparatus has particular use in combination with sump pump vessels. The apparatus includes an electrical chamber which is sealed from the vessel atmosphere and contains at least one switch controlling the activation of at least one pump, configured to pump liquid from the vessel. Within the electrical chamber there is a magnetic activation device which slides vertically along one wall of the chamber. On the opposing side of the chamber there is a magnetic coupling head which couples to the activation device magnetically through the coupling wall. The coupling head is mounted on top of a float rod having a float mechanism at the bottom thereof. The entire float switch apparatus is mounted in the vessel such that when the water reaches a predetermined level the float moves the float rod vertically and thus the coupling head is moved vertically. Since the coupling head is coupled to the magnetic activation device in the sealed electrical chamber, the activation device is also moved vertically and activates at least one switch for controlling the activation of a pump. The liquid in the vessel in then pumped out and the float rod moves down vertically in response. At a predetermined point the magnetic activation device no longer activates the switch controlling the pump and the pump is turned off. This device allows the electrical components of the float switch apparatus to remain sealed from the vessel atmosphere.

An example system includes a valve between a suction pipe extending into a sewage pit and a vacuum pipe connected to a sewer system. The vacuum pipe has vacuum pressure. The valve is controllable to open to allow content to flow from the sewage pit, through the suction pipe, and into the vacuum pipe. A sensor is configured to detect the vacuum pressure in the vacuum pipe. The valve is controllable to open for a duration that is based, at least in part, on the vacuum pressure in the vacuum pipe.

An example apparatus is for use in a system that includes a sewage pit, a suction pipe in the sewage pit, and a valve between the suction pipe and a vacuum pipe that connects to a sewer system. The apparatus includes a controller configured to perform operations that include: detecting a vacuum pressure in the vacuum pipe, determining that the vacuum pressure in the vacuum pipe is below a predefined pressure, and preventing the valve from opening in response to determining that the vacuum pressure in the vacuum pipe is below the predefined pressure.

An underground charging pile for new energy vehicle has a green plant, a buried pit, and a charging pile. The buried pit has a water storage device having two water storage tanks, each tank is communicated with the buried pit, a group of propulsion springs are fixed to the two water storage tanks, the two propulsion springs are fixedly provided with a pushing, an upper end of the charging pile is fixedly provided with a cover plate, a bottom of the charging pile is fixedly provided with a supporting plate, a lifting rod is fixed between a lower of the supporting plate and a lower of the buried pit, a water spraying device is arranged to two side walls of the buried pit.