pH monitoring Articles | Environmental XPRT

Creating Models to Better Understand Lagoons - Case Study

For the last several years researchers from Scripps Institution of Oceanography have been running a shore-based seawater CO2 and pH monitoring system in the Agua Hedionda Lagoon in Carlsbad, California next to the Carlsbad ...

Feb. 5, 2021

By Precision Measurement Engineering, Inc. (PME)

Critical evaluation and further development of methods for testing ecotoxicity at multiple pH using Daphnia magna and Pseudokirchneriella subcapitata

To meet the requirements of risk assessment legislature regarding the ecotoxicity of ionizing compounds, the present study attempts to establish easy, robust methods for testing ecotoxicity at various pH levels. An overview is given of the buffering methods in the literature. This is supplemented by a series of experiments where toxicity and ability to stabilize pH of eight common buffering ...

May 15, 2012

By John Wiley & Sons, Ltd.

Basic protocol of BM respirometry measurements and applications for activated sludge process management and energy optimization

Introduction The use of the BM advanced respirometry system enables the user to get the precise calculation of the operating parameters and limit set points that any activated sludge actually needs within the framework of an energy optimization. For that reason, the proper use of this respirometry is more than justified; and not only because of getting the parameters for a good process ...

Nov. 19, 2014

By SURCIS, S.L.

Ph and total solids control for concrete producers

Fortrans Inc. manufactures a self-contained pH control and monitoring system that uses CO2 gas to neutralize high pH process water and lower total suspended solids in process water produced at ready mixed concrete plants. The Model 5000S pH Control and Monitoring System offers precise pH control, monitoring of pH and lowers “Total Suspended Solids” of process water contained in pits, ...

Apr. 1, 2010

By Fortrans, Inc.

Inhibition of unwanted nitrification

Respirometer The respirometer utilized in this study corresponds to the BM-Advance model, with the following main features: Compact analyzer, with very low maintenance and user friendly operation Direct oxygen measurements from a maintenance-free oxygen sensor No oxygenation restriction during test performance Full control and results by means a powerful software already loaded in the PC ...

Jan. 19, 2016

By SURCIS, S.L.

Total ammonia determination through online ammonium ion and pH monitoring - Case Study

Industrial grade ammonium ion selective membrane and application engineered solid state conductive polymer reference can withstand the rigors of industrial process lines Ammonium calibration system has been optimized to yield reproducible results in a variety of wastewater systems Ammonia gas resistant pH sensor delivers the accuracy needed for total ammonia computation via a PLC or DCS from ...

Jan. 1, 2004

By Advanced Sensor Technologies, Inc. (ASTI)

Modular treatment system neutralizes process water

A self-contained pH control and monitoring sys- tem for ready mixed operations yields clean water for recycling or permitted discharge to the environment. Fortrans' Model 5000S uses car- bon dioxide gas to neutralize high-pH process water, offering precise alkalinity monitoring and control of water in pits, settling basins and other containment areas, as it lowers total suspended solids. ...

Aug. 1, 2009

By Fortrans, Inc.

Monitoring pH and ORP in a SHARON reactor

This paper analyses the valuable information provided by the on-line measurements of pH and oxidation reduction potential (ORP) in a continuous single high ammonia removal over nitrite (SHARON) reactor. A laboratory-scale SHARON reactor equipped with pH, ORP, electric conductivity and dissolved oxygen (DO) probes has been operated for more than one year. Nitrogen removal over nitrite has been ...

Jan. 1, 2011

By IWA Publishing

A system to determine and control the acid etching strength of a given process solution - Case Study

High HF and High Acid (Low pH) resistant pH and Fluoride Element Custom Engineered reference system for acid etching media Menu driven Ion Selective Industrial transmitter and controller for ion sensor calibration and process control outputs and alarms (all values controlled in ppm) The Problem A metal etching company needed to control the power of its fluoride etching bath. The quality ...

Jan. 1, 2004

By Advanced Sensor Technologies, Inc. (ASTI)

High performance cost effective replacement pH & ORP sensors for MyronL pH & ORP monitors & controllers - Case Study

Competitively Priced High Performance Solid-State pH & ORP Sensors that can retrofit almost any existing Myron L Company pH/ORP Transmitter and Controller Virtually maintenance-free, solid-state conductive polymer reference system minimizes cleaning requirements, and allows for aggressive chemical and mechanical cleaning Thick-wall, break-resistant, high performance 8 millimeter MUGG pH ...

Jul. 1, 2008

By Advanced Sensor Technologies, Inc. (ASTI)

Analytical Technology Helps Britannia Food Ingredients Ensure Safe Wastewater Disposal

Britannia Food Ingredients Ltd. is a speciality fats company for the chocolate, confectionery, biscuit and snack food industries. The company are specialists in providing the demanding fat formulations found within chocolate, ice cream, bakery and snack food products. Located at Goole, East Riding of Yorkshire, England, the business was formed in 1996 and produces a range of oils and fats ...

Mar. 5, 2013

By Analytical Technology, Inc. (ATI)

BM Respirometry applied to a novel control strategy of nitrification in a wastewater biological treatment

In wastewater treatment plants, the biological nitrogen removal (BNR) has acquired critical importance, which makes that in the majority of the cases the overall process control largely depends on the control of this treatment. The normal aerobic process of nitrification is performed by specific aerobic living microorganisms and a lack of information on their bioactivity may be cause of confusion ...

Apr. 6, 2016

By SURCIS, S.L.

Determination of trace amounts of mercury (II) by catalytic kinetic method in environmental samples

A highly selective and sensitive, spectrophotometric method is developed for the determination of Mercury(II) in environmental waters samples, based on indicator reaction of potassium hexacyanoferrate(II) and 2-methylpyrazine (2-Mepz), catalysed by Hg(II). The reaction was monitored spectrophotometrically at pH = 3.50 ± 0.02 and 25.0 ± 0.1°C by measuring the change in absorbance over time at 447 ...

Apr. 19, 2010

By Inderscience Publishers

High temperature agitated slurry copper ore mixtures - Case Study

High Temperature Agitated Slurry Copper Ore Mixtures Agitated heavy slurry mixtures are endured by the sensor by use of a strong break resistant thick-wall pH glass element (nearly unbreakable under ordinary mining slurries use) Build up on reference element is minimized by solid state reference system, which also allows for aggressive chemical and mechanical cleaning Retrofit sensor can ...

Dec. 28, 2020

By Advanced Sensor Technologies, Inc. (ASTI)

$Groundwater monitoring around hydraulic fracturing sites in Colorado - Case study$

Groundwater monitoring around hydraulic fracturing sites in Colorado - Case study

Hydraulic fracturing or ‘Fracking’ has become more prevalent and controversial in the US in recent years. More than 90 percent of new wells in the US are completed using this method. While it is endorsed by some as a game-changer that promises an increase in the nation’s economy due to energy independence, job creation, and lower energy prices; others are calling for a temporary ...

Jan. 18, 2017

By OTT HydroMet

Real-time process dynamics monitoring in Anammox reactors

Process dynamics in Anammox systems were evaluated through continuous monitoring of pH, oxidation reduction potential (ORP) and conductivity in two separate newly started-up sequencing batch reactors, one seeded with an enriched Anammox sludge and the other seeded with mixed activated sludge. The pH and ORP profiles exhibited characteristic patterns depending on the process dynamics during ...

Jul. 23, 2014

By IWA Publishing

Using biofilms for monitoring metal contamination in lotic ecosystems: The protective effects of hardness and pH on metal bioaccumulation

Biofilms can make good bioindicators and biomarkers, offering a convenient tool to monitor metal contamination in streams that results from mine tailing sites. Biofilm metal content (Cu, Zn, Cd, Pb) as well as diatom diversity and the presence of teratologies (diatom abnormalities) were determined for biofilms from rivers with a variety of physico‐chemical properties across a metal ...

Oct. 28, 2015

By John Wiley & Sons, Ltd.

NOx treatment system and pH sensors for high nitric low process media - Case Study

NOx Treatment System and pH Sensors for High Nitric Low Process Media High Acid – Wide Range pH Sensor for aggressive acid media Deep Insertion Distance from Hardware Interface Point Retrofit to Existing pH Transmitter for cost savings The Problem A catalyst manufacturer, in order to prevent the pollution of the atmosphere through the byproduct of its process, had to eliminate ...

Jan. 1, 2004

By Advanced Sensor Technologies, Inc. (ASTI)

How can I measure the pH of food?

Measuring pH in food is a useful indicator of consistency over batches for quality control but can also be used to monitor foods where the pH changes over time – for example in yogurt production, brewing or to test the freshness of foods. Standard pH electrodes will often struggle when used in food samples, as the reference junction becomes blocked the reaction time will get slower and ...

Aug. 28, 2015

By Camlab Limited

Clean Marine Case Study

EGC unit complete with 2 fans and 5 exhaust gas connec-tions, pumps with variable frequency drive, filters, cooler, NaOH dosage system, gas (SO2/CO2) and water (PAH , turbidity, pH, flow) analyzers, temperature and pressure monitoring, valves, flow meters, exhaust dampers (bypass), switchboard, PLC, Documentation and Certification, Services during planning, installation and ...

May 1, 2019

By Vortex Ecological Technologies Ltd.