Nitrification m Samenvattingen, Aantekeningen en Examens

A soil with a pH of 8.0, 10% exchangeable sodium, and 5 dS/m conductivity is: -saline, non-sodic -non-saline, non-sodic -non-calcareous -saline, sodic -non-saline, sodic correct answer: saline, non-sodic The most economical means of decreasing the soil pH from 7.0 to 4.5 in a non-calcareous soil is by the addition of: -neutral salts -gypsum -ferrous sulfate -nitrogen fertilizer -agricultural limestone correct answer: ferrous sulfate With the passage of time, the soil pH t...

1. In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? a. Ammonification b. Denitrification c. Nitrification d. Nitrogen fixation Answer is d. In nitrogen fixation, nitrogen is removed from the atmosphere by nitrogen-fixing bacteria and converted to ammonia 2. If enough H+ ions are added to pure water to raise the H+ concentration of the solution to ten times higher than the original concentration, what is the resulting OH- ...

CWEA Grade I Laboratory Analyst, questions and answers 2023 Chloride - Major anion found in many natural waters - Can impart salty taste in H2O What increases concentration of chloride in wastewater Chloride in human diet and softeners flushed into sanitary sewer system 2 most prevalent methods of measuring chloride argentometric and mercuric nitrate Argentometric Titration of sample with standard solution of silver nitrate (AgNO3) - Indicator: Chromate ions (CrO4) -...

CMMB 343 Practice Final Questions and answers rated A+ 2024 What bacteria is able to resist radiation to a great extent? A. Periblacter B. Deinoccous Radiodurans C. Micrococcus D. Spirocheate - correct answer B A bacteria was recently discovered, which of these microbial diversities would not be used to categorize the microorganism? A. Morphological B. Genetic C. Distribution D. Structure - correct answer C The discovery of nitrogen fixation and nitrification, and the mechanis...

BIO 250 Microbiology Final Exam Questions With Correct Answers | Latest Update 2023/2024 | Graded A+. In the nitrogen cycle, which of the following steps involves removal of nitrogen from the atmosphere by bacteria? a. Ammonification b. Denitrification c. Nitrification d. Nitrogen fixation Answer is d. In nitrogen fixation, nitrogen is removed from the atmosphere by nitrogen-fixing bacteria and converted to ammonia 2. If enough H+ ions are added to pure water to raise the H+ concentrat...

______ = BOD, lbs/day / MLVSS, lbs F/M ratio In a conventional activated sludge plant, oxygen demand is highest At the head end of the tank Air requirements in an activated sludge tank are governed by BOD and the desired removal efficiency, Volatile suspended solids concentration in the aerator, Suspended solids concentrations of the primary effluent It is not necessary to be a skilled microbiologist or to be able to identify or count individual species. Rather the operator nee...

Wastewater B Test Exam Questions And Answers (Verified And Updated ) Percent of volatile solids normally in sludge - answer70-80% D.O. levels in a primary clarifier - answer0.5-1.0 MG/L Why are precautionary measures needed around an aeration basin? - answerundertow and turbulence O.S.H.A. approved trench - answernarrow excavation in which the depth is greater than the width; the width must be less than 15 feet What causes bulking? - answer1. Excessive hydraulic loading, 2. Solids not p...

Essential elements for plants - ANSWER-C, H, O Macronutrients - ANSWER-N, P, K Micronutrient cations - ANSWER-Fe, Mn, Cu, Zn, Co Micronutrient Anions - ANSWER-B, Cl, Mo secondary elements - ANSWER-Ca, Mg, S Nitrogen - ANSWER-the most limiting factor for non-leguminous plants. Soil microbes also take up nitrogen, and soil nitrogen is usually caught in humus (main soil reservoir) denitirification - ANSWER-Conversion of nitrates into nitrogen gas (anaerobic conditions) Immobili...

What is TCEQ doing to control "point source" pollution of the Texas waterways? *Permitting of domestic wastewater plants *Permitting of industrial wastewater plants Describe proper design of force main wastewater lines. Minimum two fps velocity with the smallest pump operating alone. Minimum four inch diameter pipe with 150 psi rating. What is Standard Dimension Ratio? Ratio of outside pipe diameter (OD) to wall thickness (PVC) Describe proper design of gravity wastewa...

Class C Waste water Exam A-graded Final Certification Exam The Activated Sludge Process: A. requires preaeration B. requires Activated Carbon C. is an aerobic biological process. D. Usually precedes primary sedimentation. E. Requires 50% by volume old sludge to work effectively. C. Is an Aerobic biological process A complete mix activated sludge plant has a fast settling sludge and high amounts of pin floc leaving the clarifier. One way to correct this problem is to : A. Increas...