Given the following information: -aerobic digester dissolved oxygen level is at 3.5 mg/L. Discussion of water and wastewater treatment processes and technology. There are 22 individual lesson modules included in this course. The most common imbalance in the operation of an anaerobic sludge digester is, Sludge Digestion & Solids Handling: This 5 question practice test is a demo of the full, 100 question, practice test available to members. 0000004525 00000 n
Safety: Thanks for your reply! d. preaeration. a. reducing the number if weeds Safety: a. screw feeder c. green Disinfection: Wastewater sources & characteristics: When is the pH in a waste pond the lowest? c. a biological process All rights reserved. c. hypochlorite acid Wastewater Solids Processing: Secondary Treatment: Need-to-Know Criteria outline the content that will be covered on the 2017 ABC standardized exams. Press question mark to learn the rest of the keyboard shortcuts, https://royceu.com/Public/PracticeQuizes.aspx. H2SO4. a. gravity b. correct faulty plant operation In a primary clarifier, the expected performance for removing settleable solids is 90-95% removal. Saprophytic microorganisms are also called: Sludge Digestion & Solids Handling: illinois class 4 wastewater practice test. Which chemical in the following list is the strongest disinfectant? 100:5:1 a. heat treatment WasteWater Operator Certification, Grade 2 Learn with flashcards, games, and more for free. What do roller guides provide in an anaerobic digester? the floating cover on an anaerobic should be inspected how often? Sludge Digestion & Solids Handling: c. sludge digester . Rotating biological contactors are adversely affected by temperatures below_____degree F. Rotating Biological Contactors: Equilibrium system and stress factors d. plunger feeder, Solids removal from secondary effluent: feathr("fly", "5e558ae66f594e4be753166e");
If a single stage or primary tank has foam in the supernatant due to an "organic overload" in the digester, what is the best solution? c. temperature a.complete mix aeration Read more ISBN-10 1583217282 ISBN-13 978-1583217283 Edition Spi Publisher Sludge Digestion & Solids Handling: Math questions include the method to solve. What is the only acceptable breathing device to wear while handling chlorine leaks? a.secondary clarification Wastewater Treatment Operator Certification Exam - 4 Practice Problems Water and Wastewater Courses 6.18K subscribers Subscribe 86K views 5 years ago For practice exams:. c. carbon in organic matter Sludge Digestion & Solids Handling: Sludge Digestion & Solids Handling: Class 2 wastewater operator certification examination. /Length 9 0 R
Enhanced Biological (Nutrient) Control: c. secondary sludge Please select the correct language below. IX. Always pour the acid into the water. You must sign in or sign up to start the quiz. <<
True. Study Guide . Given the following information: -aerobic digester dissolved oxygen level is at 3.5 mg/L. The course is designed to prepare operators for the Grade 2, 3, and 4 Alabama Wastewater Certification Exams. %PDF-1.4
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d. scum, Residual Solids Management: The major gas produced by aerobic decomposition is:_______. What term describes the condition that exists when the source of the water supply is below the centerline of the pump? Chlorine gas has a specific gravity of, Rocks/Screens/Comminutors & Grit Removal: I got a book from WEF and studied a few online resources recommended on here. c. flammable oils Microorganisms that are methane fermenters will only produce in the pH range of, Sludge Digestion & Solids Handling: Sample Question. How much of the solids should be wasted each week in the summer form a package wastewater treatment plant for the best quality? -pH is 7.2. d)Test start standby pimps, motors and generators. Wastewater Grade 2 t/f. Is the following substances likely to serve as an oxidant or a reductant: A scuba diver wears a diving mask with a face plate that bulges outward with a radius of curvature of 0.5m0.5 \mathrm{~m}0.5m. There is thus a convex spherical surface between the water and the air in the mask. 0000002075 00000 n
If the primary sedimentation unit to a wastewater treatment plant has an H2S odor, what would be the most likely solution? Monitor electrical equipment E.coli Test Operate safety equipment . Maintenance: Campus Box 1075 - Southern Illinois Univ. The current imbalance between legs of polyphase motors should never exceed____%, Maintenance: Sludge Digestion & Solids Handling: Sludge Digestion & Solids Handling: View the 2020-2021 wastewater exam summary statistics of quarterly exam results HERE. The full practice test is randomly generated from a database of hundreds of questions, meaning no two test are ever exactly the same. d. composting, Wastewater Solids Processing: b. primary clarification This class addresses all the test topics and provides the operators with all the study material necessary to prepare for the exam. Virtual Wastewater and Math Review workshops meet from 1:00 p.m. to 3:00 p.m. Class K Study Guide Industrial Wastewater Operator Certification . 1. f.FeathrBoomerang=r;var g=e.createElement(a),
Approved Environment, Inc. offers 50 online continuing education (CE) courses for water and wastewater. The Wastewater Operator Certification Program is intended to protect public health, environmental quality, and the financial investment of wastewater facilities. Determine the percentage volatile suspended solids of a sample given the following data. This makes it harder to write exams. THESE ARE TO HELP YOU LEARN AND APPLY THE CONCEPTS THAT WILL HELP YOU PASS A STATE EXAM. by coe1069, This course includes the following lessons: System Design and Layout, Distribution Piping, Water Storage, Fire Hydrants and Valves, Water Meters, Pumps and Motors, Cross-Connection Control, Disinfection, Corrosion Control, Water Quality, Water Main Installation and Backfilling, Safety, Regulations, Hydraulics Sludge Digestion & Solids Handling: When the pump is not running, the water rises in 3 min. b. they can handle a large range of flows a. nitrate Wastewater Class 2 multiple choice. Disinfection: that is they must test what they are supposed to test. c. acids and alkalies The plant engineer estimates the machine has a useful life of 5 years and no salvage value. I had the same problem with my ABC exam for my industrial license. b. an anaerobic digester what % of the dissolved solids in wastewater are inorganics, Wastewater sources & characteristics: High suspended solids and BOD are most probably associated with which type of organisms? @keyframes _1tIZttmhLdrIGrB-6VvZcT{0%{opacity:0}to{opacity:1}}._3uK2I0hi3JFTKnMUFHD2Pd,.HQ2VJViRjokXpRbJzPvvc{--infoTextTooltip-overflow-left:0px;font-size:12px;font-weight:500;line-height:16px;padding:3px 9px;position:absolute;border-radius:4px;margin-top:-6px;background:#000;color:#fff;animation:_1tIZttmhLdrIGrB-6VvZcT .5s step-end;z-index:100;white-space:pre-wrap}._3uK2I0hi3JFTKnMUFHD2Pd:after,.HQ2VJViRjokXpRbJzPvvc:after{content:"";position:absolute;top:100%;left:calc(50% - 4px - var(--infoTextTooltip-overflow-left));width:0;height:0;border-top:3px solid #000;border-left:4px solid transparent;border-right:4px solid transparent}._3uK2I0hi3JFTKnMUFHD2Pd{margin-top:6px}._3uK2I0hi3JFTKnMUFHD2Pd:after{border-bottom:3px solid #000;border-top:none;bottom:100%;top:auto} The best operation performance for an anaerobic digester is when it is feed d. 8 stages, Rotating Biological Contactors: Hb```f``d30 P9eVcrV),VA`}. Collection Class 3; Collection Class 4 - most advanced level Small wastewater system operators oversee wastewater systems serving fewer than 3,300 persons. No worry. By the way, please keep in mind these problems are for anyone who is pursuing the first two certification levels. The most important factor in the high-rate process of anaerobic digestion is: ._1EPynDYoibfs7nDggdH7Gq{margin-bottom:8px;position:relative}._1EPynDYoibfs7nDggdH7Gq._3-0c12FCnHoLz34dQVveax{max-height:63px;overflow:hidden}._1zPvgKHteTOub9dKkvrOl4{font-family:Noto Sans,Arial,sans-serif;font-size:14px;line-height:21px;font-weight:400;word-wrap:break-word}._1dp4_svQVkkuV143AIEKsf{-ms-flex-align:baseline;align-items:baseline;background-color:var(--newCommunityTheme-body);bottom:-2px;display:-ms-flexbox;display:flex;-ms-flex-flow:row nowrap;flex-flow:row nowrap;padding-left:2px;position:absolute;right:-8px}._5VBcBVybCfosCzMJlXzC3{font-family:Noto Sans,Arial,sans-serif;font-size:14px;font-weight:400;line-height:21px;color:var(--newCommunityTheme-bodyText)}._3YNtuKT-Is6XUBvdluRTyI{position:relative;background-color:0;color:var(--newCommunityTheme-metaText);fill:var(--newCommunityTheme-metaText);border:0;padding:0 8px}._3YNtuKT-Is6XUBvdluRTyI:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;border-radius:9999px;background:var(--newCommunityTheme-metaText);opacity:0}._3YNtuKT-Is6XUBvdluRTyI:hover:before{opacity:.08}._3YNtuKT-Is6XUBvdluRTyI:focus{outline:none}._3YNtuKT-Is6XUBvdluRTyI:focus:before{opacity:.16}._3YNtuKT-Is6XUBvdluRTyI._2Z_0gYdq8Wr3FulRLZXC3e:before,._3YNtuKT-Is6XUBvdluRTyI:active:before{opacity:.24}._3YNtuKT-Is6XUBvdluRTyI:disabled,._3YNtuKT-Is6XUBvdluRTyI[data-disabled],._3YNtuKT-Is6XUBvdluRTyI[disabled]{cursor:not-allowed;filter:grayscale(1);background:none;color:var(--newCommunityTheme-metaTextAlpha50);fill:var(--newCommunityTheme-metaTextAlpha50)}._2ZTVnRPqdyKo1dA7Q7i4EL{transition:all .1s linear 0s}.k51Bu_pyEfHQF6AAhaKfS{transition:none}._2qi_L6gKnhyJ0ZxPmwbDFK{transition:all .1s linear 0s;display:block;background-color:var(--newCommunityTheme-field);border-radius:4px;padding:8px;margin-bottom:12px;margin-top:8px;border:1px solid var(--newCommunityTheme-canvas);cursor:pointer}._2qi_L6gKnhyJ0ZxPmwbDFK:focus{outline:none}._2qi_L6gKnhyJ0ZxPmwbDFK:hover{border:1px solid var(--newCommunityTheme-button)}._2qi_L6gKnhyJ0ZxPmwbDFK._3GG6tRGPPJiejLqt2AZfh4{transition:none;border:1px solid var(--newCommunityTheme-button)}.IzSmZckfdQu5YP9qCsdWO{cursor:pointer;transition:all .1s linear 0s}.IzSmZckfdQu5YP9qCsdWO ._1EPynDYoibfs7nDggdH7Gq{border:1px solid transparent;border-radius:4px;transition:all .1s linear 0s}.IzSmZckfdQu5YP9qCsdWO:hover ._1EPynDYoibfs7nDggdH7Gq{border:1px solid var(--newCommunityTheme-button);padding:4px}._1YvJWALkJ8iKZxUU53TeNO{font-size:12px;font-weight:700;line-height:16px;color:var(--newCommunityTheme-button)}._3adDzm8E3q64yWtEcs5XU7{display:-ms-flexbox;display:flex}._3adDzm8E3q64yWtEcs5XU7 ._3jyKpErOrdUDMh0RFq5V6f{-ms-flex:100%;flex:100%}._3adDzm8E3q64yWtEcs5XU7 .dqhlvajEe-qyxij0jNsi0{color:var(--newCommunityTheme-button)}._3adDzm8E3q64yWtEcs5XU7 ._12nHw-MGuz_r1dQx5YPM2v,._3adDzm8E3q64yWtEcs5XU7 .dqhlvajEe-qyxij0jNsi0{font-size:12px;font-weight:700;line-height:16px;cursor:pointer;-ms-flex-item-align:end;align-self:flex-end;-webkit-user-select:none;-ms-user-select:none;user-select:none}._3adDzm8E3q64yWtEcs5XU7 ._12nHw-MGuz_r1dQx5YPM2v{color:var(--newCommunityTheme-button);margin-right:8px;color:var(--newCommunityTheme-errorText)}._3zTJ9t4vNwm1NrIaZ35NS6{font-family:Noto Sans,Arial,sans-serif;font-size:14px;line-height:21px;font-weight:400;word-wrap:break-word;width:100%;padding:0;border:none;background-color:transparent;resize:none;outline:none;cursor:pointer;color:var(--newRedditTheme-bodyText)}._2JIiUcAdp9rIhjEbIjcuQ-{resize:none;cursor:auto}._2I2LpaEhGCzQ9inJMwliNO,._42Nh7O6pFcqnA6OZd3bOK{display:inline-block;margin-left:4px;vertical-align:middle}._42Nh7O6pFcqnA6OZd3bOK{fill:var(--newCommunityTheme-button);color:var(--newCommunityTheme-button);height:16px;width:16px;margin-bottom:2px} 2019 Association of Boards of Certification. se&{1k">N0{5yur-;5Y5#[ !q& kH'U!p_,JjrDGM&tv.~Qsn,3u}L>
b)>c^\!rA[6GOE;5N8&6\ciu2k d. settleable solids, Activated Sludge: How often should the oil in the chain casing be changed? Illinois Rural Water Association 3305 Kennedy Road; PO Box 49 Taylorville, IL 62568 Phone: 217-287-2115 Fax: 217-824-8638 Email: ilrwa@ilrwa.org Grease should be cleaned from walkaways with a stiff brush and A solids treatment thickening process method would be If the sewer rate is $25 for the first 500ft and all wastewater generated over that amount is billed at the rate of $2.50 per 100ft3, how much would a customer generating 1200ft2 of wastewater be billed? They helped me pass the level 4 wastewater operator test in New Mexico. 98) Every day the operator of a small wastewater treatment plant should. !function(f,e,a,t,h,r){if(!f[h]){r=f[h]=function(){r.invoke? These practice questions and answers are brought to you free of charge by RoyCEU.com. a. incineration a. Waste Treatment Ponds: Class 2 Wastewater Test Questions fullexams com. Which one of the following types of substances can be toxic to wastewater plants using biological systems and may adversely affect potable water supplies downstream? Which method would not be used to feed LIQUID chemicals? 2,380 Gal./Min. c)Replenish chemical stock. Basic Chemistry: What is the recommended withdrawal of chlorine in pounds from a 100 or 150 lb cylinder in a 24-hr period such that freezing does not occur? which one of the following wastewater solids would most likely never end up on a dedicated land disposal (DLD) site? Edwardsville, Illinois 62026-1075 (618) 650-2030 . Wastewater Certification Information By State October 30, 2018 We have many people contact us regarding Wastewater Operator Certification in many states. The examinations consist of multiple choice questions and essay questions designed to test your knowledge of the wastewater facilities for which you are seeking certification. c. F/M ration d. about the same volume as the grit being removed. Loading Rates. Smith, Michael Abbott. Basic Chemistry: Edwardsville, IL 62026-1075 (618) 650-2030 7. What is the most accurate measure of the organisms present in an aerator for treating incoming wastes? Sludge Digestion & Solids Handling: 0000001180 00000 n
b. toxic gases c. 100:10:3 (b) What is the magnification of the image of the fish? These questions are similar to, but not the same as, the questions you are likely to encounter on your certification exam. 8 0 obj
An atmosphere is defined as oxygen deficient if it contains less than what % oxygen by volume? b. mineral oils b. filter presses The exam questions were developed by experts in the wastewater field. d. COD, Trickling Filters: c. sludge drying bed or pond b. toxic gases what type of waste solids would most likely be sent to a rendering reclamation? WEF/ABC/C 2 EP Wastewater Operators' Guide to Preparing for the Certification Examination. Class 3 & 4 Pre-Test Class 3 & 4 Study Guides include 2 pretests with answers, Class 3 size plants general knowledge information, and Class 3 & 4 Math questions. Upgrade to Combined Grade 7 - Massachusetts Wastewater Treatment Plant Operator. d. remove sludge from grit channel, Odor Control: temperature favoring the growth of a particular species of algae. 0000000700 00000 n
Edwardsville, IL 62026-1075 (618) 650-2030 . Contact Andrea Rhodes d. 100:12:5, Trickling Filters: d. N2O. What type of protozoa is typically associated with a poor treatment process and a young bio-solids age? trailer
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I just challenged the Water Treatment level 1 exam this Monday and noticed there were questions regarding distribution on it as well. Which one the following types of substances is corrosive and may interfere with biological treatment Rotating biological contactors have all the following advantages except: Which one of the following is not a major solids treatment method? Another guy told me thats what he uses instead of the sacramento. Where is the best place to collect scum from wastewater plants that use aerobic digesters? Class 4E On-Site Wastewater Certification Exam . 4 Residual Solids Management: Approx. A pond that depends on fermentation, is odorous, and is used mainly for processing industrial wastes is classified as, Waste Treatment Ponds: Sedimentation and Flotation: What is the critical factor in any method to control the aeration tank? What is the proper emergency chlorine kit for a 1-ton chlorine cylinder? 100:2:1 What is the odor detection limit of chlorine gas? Southern Illinois Univ. return sludge/raw wastewater, Activated Sludge: If you want more practice problems, click here . Sedimentation and Flotation: ._2FKpII1jz0h6xCAw1kQAvS{background-color:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.1),0 2px 3px 0 rgba(0,0,0,.2);transition:left .15s linear;border-radius:57%;width:57%}._2FKpII1jz0h6xCAw1kQAvS:after{content:"";padding-top:100%;display:block}._2e2g485kpErHhJQUiyvvC2{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;-ms-flex-pack:start;justify-content:flex-start;background-color:var(--newCommunityTheme-navIconFaded10);border:2px solid transparent;border-radius:100px;cursor:pointer;position:relative;width:35px;transition:border-color .15s linear,background-color .15s linear}._2e2g485kpErHhJQUiyvvC2._3kUvbpMbR21zJBboDdBH7D{background-color:var(--newRedditTheme-navIconFaded10)}._2e2g485kpErHhJQUiyvvC2._3kUvbpMbR21zJBboDdBH7D._1L5kUnhRYhUJ4TkMbOTKkI{background-color:var(--newRedditTheme-active)}._2e2g485kpErHhJQUiyvvC2._3kUvbpMbR21zJBboDdBH7D._1L5kUnhRYhUJ4TkMbOTKkI._3clF3xRMqSWmoBQpXv8U5z{background-color:var(--newRedditTheme-buttonAlpha10)}._2e2g485kpErHhJQUiyvvC2._1asGWL2_XadHoBuUlNArOq{border-width:2.25px;height:24px;width:37.5px}._2e2g485kpErHhJQUiyvvC2._1asGWL2_XadHoBuUlNArOq ._2FKpII1jz0h6xCAw1kQAvS{height:19.5px;width:19.5px}._2e2g485kpErHhJQUiyvvC2._1hku5xiXsbqzLmszstPyR3{border-width:3px;height:32px;width:50px}._2e2g485kpErHhJQUiyvvC2._1hku5xiXsbqzLmszstPyR3 ._2FKpII1jz0h6xCAw1kQAvS{height:26px;width:26px}._2e2g485kpErHhJQUiyvvC2._10hZCcuqkss2sf5UbBMCSD{border-width:3.75px;height:40px;width:62.5px}._2e2g485kpErHhJQUiyvvC2._10hZCcuqkss2sf5UbBMCSD ._2FKpII1jz0h6xCAw1kQAvS{height:32.5px;width:32.5px}._2e2g485kpErHhJQUiyvvC2._1fCdbQCDv6tiX242k80-LO{border-width:4.5px;height:48px;width:75px}._2e2g485kpErHhJQUiyvvC2._1fCdbQCDv6tiX242k80-LO ._2FKpII1jz0h6xCAw1kQAvS{height:39px;width:39px}._2e2g485kpErHhJQUiyvvC2._2Jp5Pv4tgpAsTcnUzTsXgO{border-width:5.25px;height:56px;width:87.5px}._2e2g485kpErHhJQUiyvvC2._2Jp5Pv4tgpAsTcnUzTsXgO ._2FKpII1jz0h6xCAw1kQAvS{height:45.5px;width:45.5px}._2e2g485kpErHhJQUiyvvC2._1L5kUnhRYhUJ4TkMbOTKkI{-ms-flex-pack:end;justify-content:flex-end;background-color:var(--newCommunityTheme-active)}._2e2g485kpErHhJQUiyvvC2._3clF3xRMqSWmoBQpXv8U5z{cursor:default}._2e2g485kpErHhJQUiyvvC2._3clF3xRMqSWmoBQpXv8U5z ._2FKpII1jz0h6xCAw1kQAvS{box-shadow:none}._2e2g485kpErHhJQUiyvvC2._1L5kUnhRYhUJ4TkMbOTKkI._3clF3xRMqSWmoBQpXv8U5z{background-color:var(--newCommunityTheme-buttonAlpha10)} b. complete mix aeration a. thickening a. oils and greases GLOSSARY OF WASTEWATER WORDS 22-28 . The process that uses heat to selectively destroy undesirable organisms is called: Disinfection:
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