Water & Wastewater
Water is a key element of our social organizations. Ensuring the integrity and quality of our water resources while facilitating its management is therefore essential.
Water is also the common denominator for all known life forms. Preservation of this natural resource in the form of treatment is of utmost important to protect humans and the ecosystem from harmful and toxic elements found in potable water or wastewater.
To help protect the costly membranes from biofouling in a desalination process, the water is pre-treated with chlorine compounds which are hazardous to the membrane. The use of reduction agents is usually added in excess to minimize any risk to the membrane from the remaining chlorine.
In combination with spectral modeling, i.e., chemometrics, it is now possible with our UV-Vis spectrometer to determine both the sulfite and bisulfite concentrations from the reducing agent in real-time. This helps to monitor the chlorine reduction process and only add the required amount of reducing agent to save unnecessary chemical waste without compromising the water safety or risking damage to the delicate membranes.
Optimizing Cost and Reliability of Coagulation Step in Drinking Water
Drinking water plants use coagulant to remove the Natural Organic Matter (NOM) dissolved in raw water. The amount of NOM can vary depending on the weather or other conditions, and the coagulant injection flow must be adapted quickly to maintain the efficiency of the treatment.
With our online water analyzer measurement using UV254 absorbance and with no reagent required, we can automate the coagulant dosing by measuring the Dissolved Organic Carbon (DOC) in the water and adjusts the flow of coagulant in real time according to the organic matter content in the untreated water. This ensure a better control of the coagulant injection flow between the pollution peak and its detection.
Chemical Oxygen Demand (COD) Monitoring at WWTP
in Dairy Industry
Batch production at the dairy industry can induce variations of the incoming wastewater quality and properties which can affect the operation of the Wastewater Treatment Plant (WWTP) if they are not taken into account.
Most Chemical Oxygen Demand (COD) of the effluent at the dairy industry is due to whey and milk so the goal of the biological waste water treatment is to correct the pH, reduce the COD and turbidity of the effluent before any discharge.
With our online water analyzer measurement using UV254 absorbance and with no reagent required, monitoring the COD on raw wastewater enables the user to control the treatment plant operation efficiently and avoid organic overload.
Monitoring of Nitrate for Drinking Water Supply
An international airport has 2 water sources as it’s drinking water supply. One is from the local aquifer while another is from the public drinking water network. Unfortunately, the local groundwater has a Nitrate concentration that exceed the legal limit of 50mg/L.
To optimize the cost of mixing the 2 sources of water while meeting legal requirement, the airport automate the mixing of the 2 incoming water sources together with the installation of our online Nitrate analyzer.
With the direct measurement of our online Nitrate analyzer using UV spectrometry method, the control system is able to automatically adjusts the flow of the 2 water sources into the mixing tank based on the Nitrate reading. With no reagent required, self-cleaning function and minimum maintenance, the investment on our analyzer has provided the airport a profitable return within the 2 years of operation while ensuring that the Nitrate concentration of the water is below its legal limit.
Remote Online COD Monitoring of Wastewater Treatment
Sanitation companies are responsible for industrial wastewater collection and treatment from many industrial districts and industries. Depending on the volume and the pollution load of the effluent sent to their sewerage network, the sanitation company will then charge their clients accordingly.
Our online water analyzer measurement using UV254 absorbance can help to automate the analysis at the wastewater output of their clients. The analyzer can detect, quantify the discharges and monitor the COD load in real time at their client effluent.