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.

A microfluidic lab-on-a-chip (LOC) device, microfluidic systems, and associated methodology are described that allow for intelligently collecting environmental DNA (eDNA) and their associated metadata. Optical spectroscopy is integrated with filtration membranes on the microfluidic device. The microfluidic LOC device and systems can be used for selectively capturing targeted species based on optical characteristics and for recording relevant metadata on eDNA acquired by the filtration membranes.

Systems and methods relate to measuring ammonium bisulfide concentration in a fluid sample. The system includes an electrolytic conductivity cell, a temperature sensor and an analyzer. Logic of the analyzer determines the ammonium bisulfide concentration based on signals received from the conductivity cell and the temperature sensor that are coupled to monitor the fluid.

Disclosed herein are fluid chemistry systems comprising fluid chemistry manifolds. The fluid chemistry manifolds can comprise an inlet, two flow paths in fluid communication with the inlet, one or more probe apertures, and an outlet in fluid communication with the two flow paths. The one or more probe apertures can be configured to receive at least a portion of a corresponding fluid chemistry probe. The probe can be configured to detachably attach to the one or more probe apertures and fluidly communicate with the flow path. The probe can include one or more of a pH sensor, an oxidation reduction potential (ORP) sensor, and a total dissolved solids (TDS) sensor. The systems can also comprise an adjustable valve configured to selectively permit a predetermined amount of fluid flow through the at least one of the two flow paths.

A microbiological screening device, in particular for the collection and concentration of organic and inorganic matter present in a liquid, said device comprising a plurality of hollow tubular sections arranged one following the other, and mutually connected, to define a main hollow tubular body adapted to allow the flowing of a fluid between a first end thereof and a second end thereof, opposite to said one first end thereof, wherein every hollow tubular section comprises a filtering mesh or net arranged substantially transversely to the longitudinal extension direction thereof and including a plurality of through holes.

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.

An apparatus for determining total hardness in a fluid stream utilizing an ion exchange column in a monovalent cationic form having an inlet and an outlet, where one or more monovalent ion selective electrodes are positioned either at an inlet, outlet, or at both locations simultaneously. The monovalent cation selective electrodes are in electrical communication with one another, and in fluid communication with one or more valves incorporated within a fluid path in order to introduce feed water/softened water to the monovalent cation selective electrodes. Additionally, one blending valve may be incorporated in the ion exchange column to allow a fraction of the feed (hard) water to mix with a fraction of the softened water. In this manner, the blending valve may be utilized to adjust the hardness of the water at the output.

A sample of water is tested for silica and phosphate content in a single apparatus. In the test method, a first sample of the water is colorimetrically analyzed in a reaction chamber rusing a “molybdenum blue” test in which silica and phosphate in the sample are complexed with a first reagent. The phosphate complexes are then optically inactivated by a second reagent and the color of the silica complexes is intensified with a third reagent. From this, the silica content is calculated. A further sample is colorimetrically analyzed without using the second reagent, so that a combined silica and phosphate content of the further sample is obtained. A value of the silica content is subtracted from the value of the combined silica and phosphate content, resulting in a phosphate content for the sample. The silica content and the phosphate content of the sample are reportable.

A water quality monitor for a swimming pool is disclosed. The water quality monitor has a base having a first end and a second end, a removable cover coupled to and enclosing the first end of the base, a flow cell jar extending from the second end of the base, and a sensor probe connected to the second end of the base and extending downwardly into the flow cell jar. The sensor probe is configured to measure a plurality of water quality parameters. The monitor further includes a debris filter provided in a fluid flow path between an inlet and a first side of the base, and a controller configured to provide a connection between the water quality monitor and a cloud storage system using a wireless network. The measured plurality of water quality parameters are transmitted through the wireless network to the cloud storage system.

A system for product water output. The system includes a controller, a first conductivity sensor in communication with the controller, a first product valve downstream from the first conductivity sensor and in communication with the controller, a second product valve downstream from the first product valve and in communication with the controller, a second conductivity sensor downstream from the second product valve and in communication with the controller, and a divert valve downstream from the first conductivity sensor and upstream from the first product valve and in communication with the controller.