Kurita Water Industries. has filed a patent for a sampling device used in coagulation treatment systems. The device includes a sampling tank, a coagulation sensor, and a water sending pipe that transfers a portion of the treated water from the coagulation reaction tank to the sampling tank. This invention aims to improve the efficiency and accuracy of water treatment processes. GlobalData’s report on Kurita Water Industries gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Kurita Water Industries, Reverse osmosis and nano-filtration was a key innovation area identified from patents. Kurita Water Industries's grant share as of September 2023 was 20%. Grant share is based on the ratio of number of grants to total number of patents.
Sampling device for coagulation treatment device with coagulation sensor
A recently filed patent (Publication Number: US20230295022A1) describes a sampling device for a coagulation treatment device used in water treatment processes. The device includes a sampling tank, a coagulation sensor, and a water sending pipe. The coagulation sensor is installed inside the sampling tank and is positioned below the expected water level height but above half the water level height. An overflow part is provided inside the sampling tank to determine the water level height, and any excess water retained in the tank overflows and is discharged. The water sending pipe sends a portion of the water from the coagulation reaction tank to the sampling tank. The patent also describes a coagulation treatment device that incorporates this sampling device, along with a sealed-type coagulation reaction tank and a solid-liquid separation tank.
The coagulation treatment device further includes a flocculant adding device that adds the flocculant to the water to be treated. The adding device has an adding part and a control part. The control part adjusts the amount of flocculant added based on the measurement results of the coagulation sensor in the sampling device. The solid-liquid separation tank in the coagulation treatment device is equipped with a mixing chamber and a floating separation chamber in the flowing direction of the water. Additionally, a pressurized water supply part supplies pressurized water with gas pressurized and dissolved to the mixing chamber.
The patent also describes a water treatment method that utilizes the coagulation treatment device. The method involves introducing water to be treated into a sealed-type coagulation reaction tank and then transferring the treated water to a solid-liquid separation tank. During this process, a portion of the water from the coagulation reaction tank is sent to a sampling tank. A coagulation sensor in the sampling tank measures the coagulation state of the water while flocculation is being separated. Based on the measurement results, the method includes a control step where the adding amount of the flocculant is adjusted. The sampling tank has an overflow part to determine the water level height, and any excess water overflows and is discharged. The retention time of the water inside the sampling tank during the measurement step is adjusted to be within a range of 1 to 30 minutes.
Overall, this patent presents a sampling device, coagulation treatment device, and water treatment method that aim to improve the efficiency and effectiveness of coagulation treatment processes in water treatment systems.
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