TH57697A - This instrument continuously and automatically analyzes the concentration of solutions in liquids using a specialized ion detector. - Google Patents

Abstract

DC60 (02/05/45) This invention is a continuous automatic instrument for analyzing the concentration of dissolved substances in liquids using a specialized ion detector. It integrates electrodes for measuring specific ions in liquids with an automatic voltage measurement and control system. Software has been developed to process and convert the instrument into a ion concentration meter. Related components are included to enable automatic analysis and operation. This analyzer can be used to measure dissolved substances in liquids such as water, including dissolved hydrogen sulfide, chloride, fluoride, and water hardness. It provides fast and accurate results comparable to laboratory analysis. It is suitable for monitoring and controlling the quality of liquids such as water in water treatment processes, wastewater, and industrial production processes. This allows for continuous and rapid quality control of production processes, reducing product and chemical losses, and preventing environmental impacts. The analyzer is designed to be durable, easy to maintain, and inexpensive. This system integrates electrode rods for measuring specific ions in liquids with an automatic voltage measurement and control device. Software has been developed to process and control the measurement, transforming it into an ion concentration meter. Related components are integrated to enable automated analysis and operation. This analyzer can be used to measure dissolved substances in liquids such as water, including dissolved hydrogen sulfide, chloride, fluoride, and water hardness. It provides fast and accurate results comparable to laboratory analysis, making it suitable for monitoring and controlling the quality of liquids such as water in water treatment plants, wastewater, and industrial production processes. This allows for continuous and rapid quality control of production processes, reducing product and chemical losses, and preventing environmental impacts. The analyzer is designed to be durable, easy to maintain, and inexpensive.

Claims (3)

1) The continuous automatic liquid concentration analyzer using a specific ion probe consists of: - A voltage meter and controller (1) which receives the voltage signal from the specific ion probe (2) and sends an electrical signal to control the operation of the relay and sends an electrical signal to record data with a data logger. The processing system of the voltage signal from the specific ion probe inside the meter and controller uses the KALMAN-Type Filtration Technique, which processes the voltage from the probe continuously, and the electrical signal values of the probe over time are also processed. - A container for the liquid to be analyzed (3) to flow through continuously, which is made of polyethylene acrylate plastic to keep the liquid sample fresh at all times. The liquid flows in through the side at the bottom left and out through the side at the top left, where a PT 100 temperature probe (4) is inserted at the top to continuously monitor the temperature of the sample. The sample of the liquid is drawn through a peristaltic pump (6) via a plastic tubing into the detection system at the lower right channel - a three-way valve (5) which switches the direction of the plastic tubing so that the sample of the liquid or the standard solution of the ion is drawn by the peristaltic pump (6) - the peristaltic pump (6) draws the sample of the liquid and the chemical solution together for further reaction. The pump rotates and compresses the tubing against the curved platform (7), which is pressed down by a platform clamp (8) on top. The sample of the liquid and the chemical solution then flow through the mixing unit (9), which is made of polymethyl acrylate plastic. The mixed solution then flows through the dedicated ion detector housing (10), which is also made of polymethyl acrylate plastic, and is discharged out through the right side of the detector housing. 2) The continuous automatic operation of the liquid concentration analyzer as per claim 1 begins with a liquid sample, such as water, flowing through the bottom of a continuous flow-through container. 3) A sample of the liquid is then drawn by a peristaltic pump (6) along with the chemical solution through a plastic tubing into the mixing unit (9). The sample of the liquid is also drawn by the pump (6) through a three-way valve (5). Once the sample of the liquid and the chemical solution are mixed, this mixture flows through the specific ion detector (2), which is located inside the detector housing (10). A potential difference is generated at the specific ion detector as the mixture reacts electrochemically with the detector. This potential difference is then transmitted through a signal line to the spectrometer (1), where the measured potential difference is related to the concentration of the specific ion in the solution. In order for the spectrometer to accurately measure the concentration of the ions in the liquid, it is necessary to calibrate the instrument (1) by using a standard solution with a known concentration of the specific ion for analysis instead of the sample of the liquid. By rotating the handle of the three-way valve (5) in the opposite direction, the peristaltic pump (6) draws a standard solution of known concentration of that ion through the plastic tubing located at the bottom of valve (5), instead of a sample of the liquid, into the chemical solution. When the standard solution mixed with the chemical solution flows through the specific ion detector (2), the resulting electrical potential difference at the specific ion detector is measured by the voltage meter and controller (1). The resulting electrical potential difference is then used to calculate and adjust the concentration of that ion according to the concentration of the ion in the standard solution. Once the concentration of the ion is adjusted by the voltage meter (1) according to the concentration of the standard solution of that ion, the quantification of the ion in the liquid sample can be performed by rotating the handle of valve (5) in the opposite direction, and the peristaltic pump (6) draws the sample of the liquid through the plastic tubing, instead of the standard solution, into the chemical solution.