Diameter must equal .25 cm or please don’t answer! The specific gravity of the particles being...
ENVIRONMENTAL ENGINEERING, please show all work and clearly circle your answer. A settling tank is being designed to remove suspended particles through Type 1 settling. The density of the particle is 1045 kg/m23 and the density of the water is 1020 kg/m2. The diameter of the particles is 0.2 mm and the temperature is 25* C. Assuming laminar conditions, find the settling velocity, vi, for the particles. If the overflow rate is 65 m2/d m2, what is the percentage of...
Question #2 (25 points) A water treatment facility has 4 primary sedimentation tanks that operate in parallel. Each tank has the following dimensions: L: 55m, (length), W: 10.7m (width) and H: 3.0 m (depth) The tank each have a design capacity of 0.4 m”/s. Answer the following questions, a. What is the overflow rate (m/h)? b. What is the hydraulic detention time (h)? c. For spherical particles with a density of sand (2.65g/cm²), what is the smallest particle that is...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...