A sump overflow protection system for use in a building having a floor and a drainage field for collecting water from the perimeter of the building. The sump overflow protection system includes a portion of the floor proximal an opening of a sump crock having a first level defining a base and wherein the rest of the bottom floor generally has a second level higher than the first level of the basin surface of the floor and communicates water overflowing the sump crock to an outlet coupled to a building drainage outlet separate from the sump crock and to be located in the basin surface of the floor and spaced a predetermined distance from the sump crock.

The present invention describes a system (1) enabling treating water from a water tank (3), which water tank (3) is arranged in a water distribution architecture also comprising one or more user units (8), said system (1) also enabling recycling of water or discarding of water not suitable to recycle, said system (1) comprising a water distribution unit (2), at least one water treating unit (6) and a sensor unit (7) arranged for measurement of at least water quality, said water distribution unit (2) comprising one common user unit inlet 9 connectable via piping to said one or more user units (8) on their used water output side; said water distribution unit (2) further comprising a contaminated water outlet (10); and said water distribution unit (2) further comprising at least one water recirculation port (1000) connectable via piping to the water tank (3) to enable flowing water between the water distribution unit (2) and the water tank (3); and wherein said at least one water treating unit (6) enables to treat water to increase the water quality thereof and where the sensor unit (7) is connected to a control unit, which, based on the measurement of the water quality, is arranged to decide if water should be recycled to the water tank (3) from the water distribution unit (2) or should be discarded via the contaminated water outlet (10) from the water distribution unit (2).

A method for measuring TOC in test water is disclosed. Test water is injected into a combustion tube, which is controlled to be heated in a state of flowing carrier air generated by discharging stored water filled in a combustion gas or carrier air storage tank. After the drying process, temperature in the combustion tube is increased, and the dried organic carbon is burned. Combustion gas is guided to the combustion gas storage tank. An inside of the combustion tube is purified due to high pressure steam generated by injecting pure water and organic carbon removed in the purification process is burned and oxidized. The generated combustion gas is guided to the combustion gas storage tank and is pushed into an infrared meter to measure a carbon dioxide gas concentration. Otherwise, the generated combustion gas is guided to the infrared meter to measure the carbon dioxide gas concentration.

A multi-location time-division water quality monitoring system includes a water quality sensing apparatus and a management station. An unmanned vehicle of the water quality sensing apparatus can receive a task instruction from a controlled module through a wireless transmission module, and can fly to and from sensing location in cooperation with the positioning module and based on preset flight paths. After reaching the sensing location, the unmanned vehicle executes a tack of collecting water quality parameter data through the water quality sensing module, and transmits the water quality parameter data to the management station or a background server. The management station can automatically control a washing machine to clean the water quality sensing module, and control a power supplement apparatus to supplement the unmanned vehicle with power, so that an on-site operator can use single water quality sensing apparatus to monitor multiple sensing locations, to monitoring wide environment.

The present disclosure discloses a PEX-A pipe, the pipe wall of the PEX-A pipe includes a PEX-A antibacterial layer, a PEX-A main body layer, and an anti-ultraviolet (UV) layer that are sequentially attached from inside to outside. The anti-UV layer is attached to the outer side of the PEX-A main body layer to enhance the weather resistance and aging resistance and prolong the service life of the pipe. The PEX-A antibacterial layer is attached to the inner side of the PEX-A main body layer to inhibit the growth and reproduction of bacteria in water in the pipe and improve the quality of drinking water.

A method for identifying and analyzing dissolved organic nitrogen of different sources in wastewater includes extracting DON in wastewater to obtain a DON extract, detecting mass spectrum peaks in the DON extract, pre-processing the spectral data of the wastewater sample; constructing a network relationship of the substance reaction in the wastewater sample; screening the substance reaction relationship of DON; and determining different sources of DON.

The invention is based on a method, particularly a locally fixed method, for measuring a contamination of drinking water by microorganisms (16) in a drinking water conduit (12).

It is proposed that a contamination of drinking water is predicted in at least one prediction procedure (88) by means of at least one contamination risk parameter, and an actual contamination of drinking water is measured in at least one measuring procedure (90).

A water hygiene improving system and method are provided which may include and utilize one or more water hygiene improving devices which may be coupled to a building water supply network at any number of locations so that water passing through each water hygiene improving device is returned to the building water supply network. The water hygiene improving device may include one or more membrane filtration systems and optionally one or more bioreactors. The system and method include a new and innovative approach for surviving or improving water hygiene within the whole water supply network of new or existing buildings, for prevention of their contamination with legionella or other pathogens, general limitation of biofilm growth and their negative effects on water hygiene, also at point of use (POU), and water distribution within new or existing buildings by limitation of incoming nutrients, bacteria and other microorganisms at point of entry (POE) of buildings or at other locations of the water supply network within the building.

A method and system for computing a stable index value of a regulated substance by computing a virtual value of the substance based on the value of a freely marketed product of the substance. Particularly the invention may be applied to develop a stable investment instrument for investing in fresh water.

A monitoring system and method for any type of fluid system. Exemplary fluid systems include: sanitary and/or storm sewer systems; hydrological power generation, heating and cooling systems; energy exploration, excavation and transmission, specifically hydraulic fracturing known as “fracking”. The system and method utilize chemical sensors and other detection devices, a power source and circuitry to communicate with hand-held devices and/or other local or remote data terminals. Since sewers and other water infrastructure are often used to dispose, transport, store and transform liquids or other materials in addition to human waste and/or waste fluids from other human activity, monitoring effluent and chemical composition of liquids can provide data useful for a wide range of purposes.