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 system and method for monitoring or detecting a level of biofilm growth in a fluid system and controlling operating parameters of the fluid system based a measured level of growth. The monitoring system and method comprises a dye injection system for periodically injecting dye into a portion of fluid from the fluid system, passing the portion of fluid though a narrow lumen tube to achieve laminar flow and using a light source and optical sensor to detect a transmission or emission indicating a level of biofilm growth in the tube corresponding to a level of growth on components in the fluid system. Information based upon the measurements or calculations made by the monitoring system may be used to manually or automatically alter various operating parameters to control the fluid system and aid in maintaining stable operation of the fluid system within preferred specifications.

A filter for treating a fluid in a piping, in particular a piping included in a water supply network, includes: a main body having at least one internal chamber and a filtering element for treating the fluid, the filtering element having at least one magnetic element housed at least partially in the chamber and adapted to intercept and trap the ferrous impurities that are present in the fluid to be treated. At least one magnetic detector is associated with the main body for detecting the magnetic field generated by the at least one magnetic element. A control unit is associated with the at least one magnetic detector, the control unit being adapted to process the magnetic field information received from the at least one magnetic detector and to provide an indication about the quantity of impurities that have accumulated on the filtering element.

A device for cell culture comprising: a main body (11); said main body (11) comprises a plurality of circular portions (21-23); said device comprises a plurality of caps (51-53); each of said plurality of caps (51-53) comprises a base structure (58) having a circular hole (57), housing an upper slide (54) and an elastomeric layer (56) secured to said slide (54); said elastomeric layer (56) has a rectangular hole (59); said plurality of caps (51-53) being adapted to cooperate with said plurality of circular portions (21-23); each of said plurality of circular portions (21-23) each comprise an inlet hole (64-66) and an outlet hole (67-69) aligned with the long side of said rectangular hole (59), to perfuse the culture chamber (12-14) located in said rectangular hole (59) of said elastomeric layer (56).

The present invention relates to a mobile system for continuous, automatic, online monitoring of water quality and particle sampling in a drinking water distribution network, comprising: a mobile unit provided with means for supplying, from at least a selected one of the plurality of points in the drinking water distribution network, a corresponding, selected influent fluid sample stream; means for discharging a corresponding, selected effluent fluid sample stream; for each selected influent fluid sample stream, a respectively associated continuous monitor module.

A method of managing ionization for biofouling control in a water intake system that includes channeling a supply water stream through an electrochemical cell, monitoring at least one parameter of the supply water stream, determining an ion concentration threshold for the supply water stream based on the at least one parameter, and controlling the electrochemical cell such that ions are discharged into the supply water stream. The electrochemical cell is controlled such that an ion concentration of a treated water stream discharged from the electrochemical cell is greater than the ion concentration threshold.

The present invention relates to a system for monitoring fouling issues in a drinking water distribution network, said drinking water distribution network comprising a water mass flow meter having a water inlet and a water outlet, said water mass flow meter being located at a customer, wherein upstream from said water mass flow meter a filter device is positioned, said filter device being provided with a pre-pressure sensor and a post-pressure sensor.

The present disclosure generally relates to compositions and uses of sulfidogenesis inhibitor compounds of Formulae 1 and 2 for preventing sulfidogenesis, i.e., the reduction reaction of a sulfur-containing compound by sulfur-utilizing prokaryotes that produce sulfide species such as hydrogen sulfide, during enhanced oil recovery processes. A method for inhibiting or decreasing microbial sulfide production by sulfur-utilizing prokaryotes includes addition of an effective amount of sulfidogenesis inhibitor compounds of Formulae 1 and 2 to the fluid that is injected into a sulfidogenic reservoir system during enhanced oil recovery. For example, the compounds can be used as sulfidogenesis inhibitors in a water injection system for use in a hydrocarbon extraction system or a hydrocarbon production system. Thus, these compositions can be effectively used as inhibitors of biogenic hydrogen sulfide generation in oilfield fluids.

A closed conduit system for use in a water supply system includes a recirculating unit configured to connect to an isolated section between a first point and a second point of the water supply system. The recirculating unit includes a first filter unit defining a first closed circuit including the isolated section and adapted to perform a first treatment. A second filter unit defines a second closed circuit including the isolated section and is adapted to perform a second treatment. At least one pump is capable of generating a flow of water through the first and the second closed circuit, and a valve selectively controls flow through either the first or the second closed circuit.

In a geothermal plant, alternately injecting an acid composition and a caustic composition removes or inhibits scale build-up.