Methods, apparatus, and systems are provided for detecting and removing microplastics from wastewater effluent. Both, automatic/remote and manual monitoring and sampling components are included to detect the presence of microplastics. The automatic monitoring and sampling component includes a TSS sensor and associated apparatus calibrated to account for non-plastic solids present in the wastewater and, thereby, more accurately determine the presence of microplastics. Efficient separation and removal of microplastics from wastewater effluent is performed by a specialized capture net apparatus having multiple sized mesh components and optional diffuser devices which perform size exclusion filtration of microplastics from the water. In an exemplary embodiment, the methods generally include diverting treated wastewater effluent from a wastewater treatment facility's main line into a wastewater sampling mechanism via an intake pipe, and then into a solids monitoring and separation mechanism which includes the specialized capture net apparatus.

The present invention relates to a real-time automatic analysis device for an organic contaminant in water, the device having: an analysis apparatus comprising a solid phase micro-extraction device and a gas chromatography/mass spectrometry analysis device that have been traditionally used; a heating block; a sample bottle; a discharge unit; and a control unit. While using an analysis apparatus, being traditionally used, as it is, the real-time automatic analysis device for an organic contaminant in water accurately and quickly identifies a point of generation of a high-concentration organic contaminant by supplying a sample consecutively and in real time, takes follow-up measures, and easily performs a sensory analysis as well as a chemical analysis.

A system for detecting the presence of E. coli and total coliform in a water sample includes a sample holder that holds smaller, divided volumes of the sample and a testing reagent. A plurality of light sources are disposed above sample holder. The divided sample volumes are are illuminated with first and second light sources emitting light at different wavelengths. A bundle of optical fibers is provided with having an input end located adjacent to the divided sample volumes and is configured to receive light passing through the sample volumes. Light is output from the bundle of optical fibers and is captured with a camera. Image processing software is provided and is configured to calculate a light intensity in first and second wavelength channels at different times and outputs a positive/negative indication for E. coli and total coliform for the water sample.

Systems and Methods for monitoring characteristics of a water sample taken from a water facility (WF), by using a first light source emitting light at a first wavelength, and an additional light source, emitting light at an additional wavelength which is distinctly different from the first wavelength; for each light source, performing a measurement of the water sample, using an optical sensor outputting updated sensor data and a spectral detector, outputting updated detector data; and determining adjustment properties for adjustment of an analysis model, used for ongoing determination of water characteristics such as the water turbidity level, based on comparison between the measurements for each of the light sources.

Technical solutions are described for predicting water quality of a water source over a forecast horizon and for multiple locations. An example computer-implemented method includes receiving a forecast horizon for across which to predict the water quality. The forecast horizon includes a plurality of time periods. The computer-implemented method also includes receiving one or more geographical locations at which to predict the water quality. The computer-implemented method also includes receiving a set of water quality measures for the water source. The computer-implemented method also includes determining predicted water quality measures for the geographical location at each of the plurality of time periods in the forecast horizon based on the water quality measures. The computer-implemented method also includes outputting one or more of the predicted water quality measures.

An analytical system and method for periodically monitoring an injection water distribution pipeline for the presence and concentration of formaldehyde or other aldehyde-functional biocide includes pumps, one of which provides a predetermined volume of injection water drawn from the pipeline at a sampling point and the other a predetermined volume of a reagent, preferably a buffered solution of dimedone, from a reagent storage vessel which are mixed and then heated in a chamber to a predetermined temperature to promote formation of any reaction products. The heated reaction mixture is passed to a detection cell and exposed to light of predetermined wavelength which, in accordance with the Hantzsch reaction, molecules having an aldehyde functional group that reacted with dimedone produce a fluorescence-emitting reaction product, the intensity of which is measured and compared to data previously obtained from standard aldehyde-containing solutions.

A gas-equilibrated, volatile-in-water detector comprises a gas-sensing chamber having an orifice closed by a hydrophobic, vapour-porous membrane, typically PTFE, sealed to the periphery of the orifice. Membrane is also sealed to an external wall of a surrounding enclosure and forms an entry point to a second gaseous enclosure external of the gas-sensing chamber. A PID or similar sensor generates a measurable current or voltage in response to the partial pressure of the analyte within the gas-sensing chamber without the sensor significantly altering such equilibrium partial pressure.

A concentration detecting section detects a concentration of urea water and outputs the detected value. A determining section determines whether the urea water is suitable by using the detected value. A temperature detecting section detects temperatures of detection targets. The detection targets have temperatures that are different from one another during operation of an engine. The determining section is adapted to calculate a temperature difference between temperatures of a particular detection target and another detection target and start determining whether the urea water is suitable when a determination start condition including that the temperature difference is within a reference range is satisfied. The reference range is defined as a range of temperature differences in which it is determined that the urea water is in a quiescent state, which is suitable for the determination.

Provided are a rapid detection method for a condition of landfill leachate polluting groundwater and an application thereof. The rapid detection method includes: carrying out fluorescence detection on groundwater in a specific region of a landfill, and determining whether the groundwater is polluted according to a ratio of fluorescence intensities at specific excitation/emission wavelengths in a specific fluorescence region. The rapid detection method provided by the solution establishes characteristic fluorescence spectrum regions, fluorescence intensities and regular characteristics thereof of organic matters in leachate-polluted groundwater of a landfill in a fluorescence spectrum region, and can achieve the rapid detection of a condition of landfill leachate polluting groundwater by means of a portable fluorescence detector on site. The detection method provided by the solution is characterized by rapid detection, no need of chemical reagents, simple operation, high detection sensitivity and lower cost.

A method of determining a concentration of phenol and/or a phenol derivative in a first solution. The method includes (a) subjecting a graphite pencil electrode system comprising a graphite pencil working electrode, a counter electrode, and a reference electrode to cyclic voltammetry in a second solution such that a surface of the graphite pencil working electrode is charged by the cyclic voltammetry to form a charged surface, (b) contacting the charged surface of the graphite pencil working electrode with the first solution for sufficient time to electropolymerize the phenol and/or the phenol derivative on the charged surface in open circuit fashion, and (c) determining the concentration of the phenol and/or the phenol derivative in the first solution, wherein the amount of the electropolymerized phenol and/or the electropolymerized phenol derivative formed on the charged surface correlates with the concentration of the phenol and/or the phenol derivative in the first solution.