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...

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...

Grade 3 wastewater Guide Rated A+ Svl Ans- How well activated sludge mls compact. Volume in milliliters occupied by 1 gram of activated sludge mixed liquor after 30 min of settling. Conventional activated sludge Ans- Mcrt 15 days, f-m .2-.4, org. Loading 20-40, mlss 1500-3000, aerator det. Time 4-8 hrs, return rate 25-50% Complete mix activated sludge Ans- Mcrt 5-15, f-m .2-.6, org. Loading 50-120, mlss 3000-6000, aerator det. Time 3-5, return rate 25-100% Step feed aeration activated ...

WasteWater Operator class C exam practice review questions and answers with certified solutions When Chlorine is combined with water what type of pipe should be used? A. Ductile iron B. Asbestos concrete C. PVC D. Carbon Steel C. PVC A good settling sludge would consist of what type of protozoa? A. Rotifers and nematodes B. Amoebas and Flagellates C. Stalked ciliates and mastagoria D. Free swimmers and stalk ciliates D. Free swimmers and stalk ciliates What is Phenolphylein used for in ...