Activated Sludge Treatment System and Wastewater B Exam Solutions, Exams of Nursing

Download Activated Sludge Treatment System and Wastewater B Exam Solutions and more Exams Nursing in PDF only on Docsity! Texas Wastewater B exam-With 100% verified solutions 2024-2025 Tutor verified Primary Clarifiers In an activated sludge treatment system, primary treatment processes include the: Removal of Inorganic material from grit In a washing grit remover, the grit is moved slowly by screw conveyors up an inclined channel in order to? 90% or above An efficient primary clarifier is expected to remove ? of the influent settleable solids. Adequate DO at surface at all times Proper operation of a facultative pond system requires that:, True The amount of organic matter removed by a trickling filter is mostly dependent on the recirculation ratio Bulking In an activated sludge treatment plant, a Sludge Volume Index (SVI) of 180 would indicate Reseed The AB, Remove sludge from FC The purpose of returning the solids from the bottom of the clarifier to the aeration tank in the activated sludge process is to Free swimmer rotifers stalked ciliates Microscopic examination of a good-settling sludge should show a predominance of: Dissolved oxygen (DO) or oxygen obtained from food materials such as sulfate or nitrate When nitrification takes place in the activated sludge process, facultative bacteria use Primary clarifiers In an activated sludge process, the results of a mixed liquor settling test indicate that the supernatant of the mixed liquor sample is clear, but the supernatant of the plant effluent sample is turbid. These test results indicate that the problem is occurring in the? Low C02 high Methane One indication that an anaerobic digestion facility is improving would be? False The terms "low rate" and "high rate" when used in reference to the anaerobic digester refer to the rate of stabilization of the raw sludge? Control odor, Reduce BOD ,Control foaming, Aid in sludge Besides disinfection, chlorination can be used in wastewater treatment processes to? 450ml If released to atmospheric pressure, one part liquid chlorine will expand to about? Biological treatment for the removal of biodegradable organic wastes under aerobic conditions. The extended air activated sludge treatment process:? Next to Air Gap When a potable water supply is used to provide clean water to water seals on a wastewater pump, the installation should be made Points of change in alignment, grade, or size of sewer, at the intersection of all sewers and the end of all sewer lines In a wastewater collection system, manholes should be placed To be less, or same. In the contact stabilization system of activated sludge treatment, the detention time in the contact zone is designed to ? other types of activated sludge treatment. Employers that have hazardous chemicals in their workplaces are required Under the OSHA Hazard Communication Standard, an annual meeting to explain the Law and the company's written policy must be held for Methane and hydrogen sulfide A combustible atmosphere,Methane & Hydrogen Sulfide To frost over A leaking gas chlorine container? 19.5% The definition of an oxygen-deficient atmosphere is one that contains less than ______ percent oxygen? Precision and Accuracy Reliable laboratory results are obtained primarily through None in 24 hr A 24-hour composite sample was tested for chlorine residual and found to contain none. These results indicate that? Health of floc return sludge flow rate, bulking In an activated sludge treatment plant, the 30-minute settleability test indicates? Toxicity of water by exposing living organisms to plant effluent Biomonitoring Planning, PM, records, analysis Achieving work goals for an individual works best when they are? Listen, trust, respect, understanding, empathy, and resolution One element of being an effective communicator is to? Facility operations, type and amount of discharge, and the condition of the receiving waters. The permit requirements for a particular wastewater treatment plant are based on? Remove harmful pollutants before the wastewater is discharged The most important consideration when implementing a comprehensive pretreatment program within a municipal wastewater collection system is to,? Wastewater collection In most pressure sewer systems, the pumping units or grinder pumps at each residence are considered to be? Turns Pump Off What is the function of the bottom float in a lift station?