Cheer Tsang's Individual Contribution Page

Spring 2017 Contributions

In Spring 2017, I will be continuing my work on the Sensor Development subteam. First, we will be working on improving the calibration curve for the solids concentration photosensor. Next, we will design a fluidized bed submersible solids submersible detector, which will be a probe submerged in the floc blanket that measures the floc blanket concentration. The final task we will work on is developing a Floc Hopper solids interface level detector, which will measure the depth of the sludge within the floc hopper. 

Fall 2016 Contributions

In Fall 2016, I became a new member of the AguaClara Sensor Development team. We worked with the program ProCoDa to optimize a pressure-vent. Our goal was to quantitively measure the amount of biogas produced by anaerobic reactors in order to assess the efficiency of anaerobic reactors. We will measure gas volume by using air pumps to displace water, and using water displacement measurements to calculate the amount of gas. We completed fabrication of four biogas sensors for the Anaerobic Fluidized Bed (AFB) subteam. We also worked on building a photosensor to measure the solids concentration within the AFB reactors. Using an LED and shining it through the AFC reactor pipes, we calculated a calibration curve by determining the relationship between the solids concentration and the intensity of light. We will need to modify this calibration curve in the future.