Water Environment Federation Bookstore. a. increase air in aeration system Water Treatment Practice Test - DEMO This 5 question practice test is a demo of the full, 100 question, practice test available to members. d. brown a. detergent b. NO2 _____? High suspended solids and BOD are most probably associated with which type of organisms? d. DO. WEF/ABC/C 2 EP Collection Systems Operators' Guide to Preparing for the Certification Examination. This test is designed to simulate the actual Wastewater exam as closely as possible. d. acids and alkalies, Activated Sludge: The passing grade is 70%. ._3K2ydhts9_ES4s9UpcXqBi{display:block;padding:0 16px;width:100%} What is the critical factor in any method to control the aeration tank? What do corbels provide in an anaerobic digester? Wastewater Certification practice tests, flashcards, study guides, and more. c. tapered aeration The demo is available to both certification programs and trainers to help prepare individuals for taking a computerized exam. What would be the most probable cause for gas leaking through the pressure relief valve on the digester's roof? It doesn't appear in any feeds, and anyone with a direct link to it will see a message like this one. c. add treatment chemicals acid fermentaters would predominate and pH would decrease, Sludge Digestion & Solids Handling: a.secondary clarification Basic Chemistry: decomposition of a material caused by an outside electric current, A shock load of toxic wastes coming into a plant can be treated or controlled with, {"cdnAssetsUrl":"","site_dot_caption":"Cram.com","premium_user":false,"premium_set":false,"payreferer":"clone_set","payreferer_set_title":"Wastewater Grade 4 Questions","payreferer_url":"\/flashcards\/copy\/wastewater-grade-4-questions-4642202","isGuest":true,"ga_id":"UA-272909-1","facebook":{"clientId":"363499237066029","version":"v12.0","language":"en_US"}}. Approved Training Provider - Indiana, Illinois, Ohio, Delaware, Alabama, Maryland, Idaho, North Carolina, South Carolina, Virginia, West Virginia, Tennessee and Kentucky. -all blowers are running. Safety: Class 2 Wastewater Test Questions fullexams com. The allowable frequency deviation above or below the value stamped on a motor's nameplate is_______%. Given the following information: -aerobic digester dissolved oxygen level is at 3.5 mg/L. Class I - Wastewater Class I - Operator Class I - Water Distribution Class II - Operator Class II - Water Distribution Class III - Water Treatment Class III - Water Distribution Class IV - Water Distribution Learning Excel Workbook Basics Function Basics More Training on Microsoft's website Puzzle Puzzle: KRWA is going to PIECES! The Association Certification of Boards doesnt take all of their questions from one book, there are usually several books that they take information from and then compile an exam. c/ dewatering If power to a Test Center is temporarily interrupted during an administration, your examination will be restarted. How do you calibrate a chemical feed pump? c. applying chlorine a) 346.2 b) 2229 Off GPM 7207 c) 3.23 33.4 in. b. pH return sludge/raw wastewater, Activated Sludge: The specific gravity standard for gases is_______, Basic Chemistry: You have already completed the quiz before. What do skirts provide in anaerobic digesters? At what concentration level should dissolved oxygen be maintained during the initial start up of a oxidation ditch? Maintenance: d. about the same volume as the grit being removed. -high surface turbulence. a. hair . . No sweat, as my boss says, "how you suppose to know what to study if you haven't taken the test before". A solids treatment dewatering process method would be" ABC wastewater exam class III : r/Wastewater. b. correct faulty plant operation ._1aTW4bdYQHgSZJe7BF2-XV{display:-ms-grid;display:grid;-ms-grid-columns:auto auto 42px;grid-template-columns:auto auto 42px;column-gap:12px}._3b9utyKN3e_kzVZ5ngPqAu,._21RLQh5PvUhC6vOKoFeHUP{font-size:16px;font-weight:500;line-height:20px}._21RLQh5PvUhC6vOKoFeHUP:before{content:"";margin-right:4px;color:#46d160}._22W-auD0n8kTKDVe0vWuyK,._244EzVTQLL3kMNnB03VmxK{display:inline-block;word-break:break-word}._22W-auD0n8kTKDVe0vWuyK{font-weight:500}._22W-auD0n8kTKDVe0vWuyK,._244EzVTQLL3kMNnB03VmxK{font-size:12px;line-height:16px}._244EzVTQLL3kMNnB03VmxK{font-weight:400;color:var(--newCommunityTheme-metaText)}._2xkErp6B3LSS13jtzdNJzO{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;margin-top:13px;margin-bottom:2px}._2xkErp6B3LSS13jtzdNJzO ._22W-auD0n8kTKDVe0vWuyK{font-size:12px;font-weight:400;line-height:16px;margin-right:4px;margin-left:4px;color:var(--newCommunityTheme-actionIcon)}._2xkErp6B3LSS13jtzdNJzO .je4sRPuSI6UPjZt_xGz8y{border-radius:4px;box-sizing:border-box;height:21px;width:21px}._2xkErp6B3LSS13jtzdNJzO .je4sRPuSI6UPjZt_xGz8y:nth-child(2),._2xkErp6B3LSS13jtzdNJzO .je4sRPuSI6UPjZt_xGz8y:nth-child(3){margin-left:-9px} d. flood the filter. All rights reserved. Name the solids treatment method that has a solids buildup which forms a blanket on the bottom and forces the water out due to compression? feathr("sprinkle", "page_view"); which one of the following wastewater solids would most likely never end up on a dedicated land disposal (DLD) site? b. Effluent Disposal: The standard for gases has a density of. What is the solids treatment method that uses a chemicals and mixes the recycled flow with the process residual flow in a reactor? Of the following, which is the least important nutrient in wastewater treatment for microorganisms to reproduce? @keyframes ibDwUVR1CAykturOgqOS5{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}._3LwT7hgGcSjmJ7ng7drAuq{--sizePx:0;font-size:4px;position:relative;text-indent:-9999em;border-radius:50%;border:4px solid var(--newCommunityTheme-bodyTextAlpha20);border-left-color:var(--newCommunityTheme-body);transform:translateZ(0);animation:ibDwUVR1CAykturOgqOS5 1.1s linear infinite}._3LwT7hgGcSjmJ7ng7drAuq,._3LwT7hgGcSjmJ7ng7drAuq:after{width:var(--sizePx);height:var(--sizePx)}._3LwT7hgGcSjmJ7ng7drAuq:after{border-radius:50%}._3LwT7hgGcSjmJ7ng7drAuq._2qr28EeyPvBWAsPKl-KuWN{margin:0 auto} If is not recommended to start up trickling filters in the _____(season) because bacteria are most ofter dormant at this time, Trickling Filters: Water Treatment Certification practice tests, flashcards, study guides, and more. One solids treatment thickening process would be: Waste Treatment Ponds: Basic Concepts. May 7th, 2018 - Revised March 2003 Illinois Environmental Protection Agency Wastewater Operator Certification If this is your first exam attempt . !function(f,e,a,t,h,r){if(!f[h]){r=f[h]=function(){r.invoke? .c_dVyWK3BXRxSN3ULLJ_t{border-radius:4px 4px 0 0;height:34px;left:0;position:absolute;right:0;top:0}._1OQL3FCA9BfgI57ghHHgV3{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;-ms-flex-pack:start;justify-content:flex-start;margin-top:32px}._1OQL3FCA9BfgI57ghHHgV3 ._33jgwegeMTJ-FJaaHMeOjV{border-radius:9001px;height:32px;width:32px}._1OQL3FCA9BfgI57ghHHgV3 ._1wQQNkVR4qNpQCzA19X4B6{height:16px;margin-left:8px;width:200px}._39IvqNe6cqNVXcMFxFWFxx{display:-ms-flexbox;display:flex;margin:12px 0}._39IvqNe6cqNVXcMFxFWFxx ._29TSdL_ZMpyzfQ_bfdcBSc{-ms-flex:1;flex:1}._39IvqNe6cqNVXcMFxFWFxx .JEV9fXVlt_7DgH-zLepBH{height:18px;width:50px}._39IvqNe6cqNVXcMFxFWFxx ._3YCOmnWpGeRBW_Psd5WMPR{height:12px;margin-top:4px;width:60px}._2iO5zt81CSiYhWRF9WylyN{height:18px;margin-bottom:4px}._2iO5zt81CSiYhWRF9WylyN._2E9u5XvlGwlpnzki78vasG{width:230px}._2iO5zt81CSiYhWRF9WylyN.fDElwzn43eJToKzSCkejE{width:100%}._2iO5zt81CSiYhWRF9WylyN._2kNB7LAYYqYdyS85f8pqfi{width:250px}._2iO5zt81CSiYhWRF9WylyN._1XmngqAPKZO_1lDBwcQrR7{width:120px}._3XbVvl-zJDbcDeEdSgxV4_{border-radius:4px;height:32px;margin-top:16px;width:100%}._2hgXdc8jVQaXYAXvnqEyED{animation:_3XkHjK4wMgxtjzC1TvoXrb 1.5s ease infinite;background:linear-gradient(90deg,var(--newCommunityTheme-field),var(--newCommunityTheme-inactive),var(--newCommunityTheme-field));background-size:200%}._1KWSZXqSM_BLhBzkPyJFGR{background-color:var(--newCommunityTheme-widgetColors-sidebarWidgetBackgroundColor);border-radius:4px;padding:12px;position:relative;width:auto} Post was not sent - check your email addresses! Sludge Digestion & Solids Handling: I included the answers at the bottom of this page. 98) Every day the operator of a small wastewater treatment plant should. ._12xlue8dQ1odPw1J81FIGQ{display:inline-block;vertical-align:middle} The most common imbalance in the operation of an anaerobic sludge digester is, Sludge Digestion & Solids Handling: Activated Sludge: Pre-Lab c. composting Which one of the following is the best type of valve to use to dampen a water hammer? Calculate the BOD given the information: Initial DO: 8.3. d. N2O. Math for Wastewater Treatment Operators Grades 3 amp 4 March 13th, 2009 - Math for Wastewater Treatment Operators Grades 3 amp 4 Practice Problems to Prepare for Wastewater Treatment Operator Certification Exams 1st Edition Catalog Roane State Community College April 30th, 2018 - Note The terms in which a course is normally Digestion is working properly if the volatile solids content of the raw sludge has been reduced by ___-___%, Sludge Digestion & Solids Handling: Disinfection: What condition will occur if sludge is not pumped out of primary clarifiers at regular intervals? VII. . 14 sec. What should be the color of an oxidation ditch that is working properly? Pass your test the first time! 58 0 obj << /Linearized 1 /O 60 /H [ 700 326 ] /L 100420 /E 48024 /N 15 /T 99142 >> endobj xref 58 13 0000000016 00000 n Water and Wastewater Courses For Operator Certification. Which one of the following types of substance is not soluble in water and has the potential of creating explosive conditions? How many stages are usually present in the rotating biological contactor process? 0000002075 00000 n c)Replenish chemical stock. ._3Z6MIaeww5ZxzFqWHAEUxa{margin-top:8px}._3Z6MIaeww5ZxzFqWHAEUxa ._3EpRuHW1VpLFcj-lugsvP_{color:inherit}._3Z6MIaeww5ZxzFqWHAEUxa svg._31U86fGhtxsxdGmOUf3KOM{color:inherit;fill:inherit;padding-right:8px}._3Z6MIaeww5ZxzFqWHAEUxa ._2mk9m3mkUAeEGtGQLNCVsJ{font-family:Noto Sans,Arial,sans-serif;font-size:14px;font-weight:400;line-height:18px;color:inherit} The ABC formula sheet is provided, and you must bring a non-programmable calculator. c. F/M ration c. trisodium phosphate b. primary clarification This 5 question practice test is a demo of the full, 100 question, practice test available to members. Wastewater Solids Processing: The clarity of a trickling filter's effluent is considered good when the "Secchi" disk can be read at a level of___ft, Basic Chemistry: Activated Sludge: Jake THESE ARE NOT DUPLICATE QUESTIONS FROM ANY STATE EXAM. 2017 Wastewater Treatment Operator Formula/Conversion Table Sedimentation and Flotation: Motor insulation material comes in four classes and the are based on_______, Maintenance: a. total solids d. temperature. Maintenance: How much of the solids should be wasted each week in the summer form a package wastewater treatment plant for the best quality? Verified questions. The full practice test is randomly generated from a database of hundreds of questions, meaning no two test are ever exactly the same. What do roller guides provide in an anaerobic digester? worked for me on the class IV. To see these classes - CLICK HERE. Residual Solids Management: Class 4 Wastewater IL 4.0 (1 review) Term 1 / 88 What do you do if a sewer line is plugged? Which one of the following methods would not be used to feed DRY chemicals? 2. oxidation pond Lab-Getting Trendy WasteWater Operator Certification, Grade 2 Learn with flashcards, games, and more for free. Basic Chemistry: b. complete mix aeration b. CO2 Activated Sludge Module 3 . b. vibrating trough b. decanter ABC standardized exams are administered with an ABC Formula/Conversion Table containing mathematical formulas and common abbreviations that may be present on the exam. Microbiology. The following are approved as reference sources for the 2017 ABC standardized wastewater treatment operator exams. This makes it harder to write exams. what would happen if too much sludge was added to an anaerobic digester? All occupied trenches 4 or more feet deep must provide exits at. (a) Where does the fish appear to be? By measuring the pump output. Statistics from 2019 HERE. CA Grade 4 amp 5 Wastewater Math Part 2 of 3 YouTube. Perfect for water distribution operators taking their D-1, D-2, D3 Operator exams (DI-DIII.) Basic Chemistry: c. temperature Solids removal from secondary effluent: Incoming Wastewater Testing Monitoring of influent wastewater is an important component of operating an activated sludge plant. True. @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} If there is a leak from a valve on a sulfur dioxide tank and the lead is found using ammonia, what color will the vapor fumes be? What is WEF? Hydrogen Sulfide will exist in a system depending on the presence or absence of_____. If an induction motor is rated at 40 amps for a full-load current, what will be the most probable starting sequence amps required? 8 0 obj Approx. 14/08/2014 Rotating Biological Contactors: 0000001315 00000 n Odor Control: How often should the liquid level be checked on a digester to prevent overfilling? Grease should be cleaned from walkaways with a stiff brush and c. volatile-acid-alkalinity ratio name the laboratory glassware that can be used to heat liquids in an open flame? When is the pH in a waste pond the lowest? Rotating Biological Contactors: Sludge Digestion & Solids Handling: The solids treatment method usually dewaters solids by mixing them with a bulking agent and then waiting for biological stabilization to occur? That may seem obvious but, too many people take the certification exam with little or no preparation. WasteWater Operator Certification, Grade 2, Wastewater Treatment Facilities: What is the name of the solids treatment method that maintains a certain pH for at least 2 hrs, then with the final product which can then be applied directly to land is called______. Wastewater Solids Processing: d. phosphate-free surfactant, Activated Sludge: Basic Chemistry: How often should the mainshaft bearings be greased in a rotating biological contactor unit? H}Wr8[$HB$"&.ZO*JJ4p8(To>|H^sGGrB*G*f%G. Saprophytic microorganisms are also called: Sludge Digestion & Solids Handling: Flashcards. a. polishing pond Regarding waste pond lab sampling, which parameter is sampled at the influent of the pond? The exam consists of 100 multiple choice questions. Virtual Water workshops meet from 1:00 p.m. to 4:00 p.m. What class of fire involves sodium and magnesium? The small wastewater system certificate is a "hybrid" certificate, combining both wastewater treatment and wastewater collection expertise for communities that serve fewer than 3,300 persons. Residual Solids Management: Find out how you can intelligently organize your Flashcards. Classes and seminars for water and Wastewater Certification. b. cyanide b. they can handle a large range of flows Compute the depreciation schedule using: (a) Straight-line depreciation (b) Sum-of-years'-digits depreciation (c) Double declining balance depreciation (assume any remaining depreciation is claimed in the last year). The most common flow-measure device for wastewater is a_____, Wastewater Treatment Facilities: How ofter should the drive bearings be greased in a rotating biological contactor unit? what would be the best solution if the volatile-acid-to-alkalinity ratio increased to 0.3 in a digester due to pumping thin sludge? THESE ARE TO HELP YOU LEARN AND APPLY THE CONCEPTS THAT WILL HELP YOU PASS A STATE EXAM. If the head works in a wastewater treatment plant had an H2S odor, what would be the most likely solution? ._38lwnrIpIyqxDfAF1iwhcV{background-color:var(--newCommunityTheme-widgetColors-lineColor);border:none;height:1px;margin:16px 0}._37coyt0h8ryIQubA7RHmUc{margin-top:12px;padding-top:12px}._2XJvPvYIEYtcS4ORsDXwa3,._2Vkdik1Q8k0lBEhhA_lRKE,.icon._2Vkdik1Q8k0lBEhhA_lRKE{border-radius:100%;box-sizing:border-box;-ms-flex:none;flex:none;margin-right:8px}._2Vkdik1Q8k0lBEhhA_lRKE,.icon._2Vkdik1Q8k0lBEhhA_lRKE{background-position:50%;background-repeat:no-repeat;background-size:100%;height:54px;width:54px;font-size:54px;line-height:54px}._2Vkdik1Q8k0lBEhhA_lRKE._1uo2TG25LvAJS3bl-u72J4,.icon._2Vkdik1Q8k0lBEhhA_lRKE._1uo2TG25LvAJS3bl-u72J4{filter:blur()}.eGjjbHtkgFc-SYka3LM3M,.icon.eGjjbHtkgFc-SYka3LM3M{border-radius:100%;box-sizing:border-box;-ms-flex:none;flex:none;margin-right:8px;background-position:50%;background-repeat:no-repeat;background-size:100%;height:36px;width:36px}.eGjjbHtkgFc-SYka3LM3M._1uo2TG25LvAJS3bl-u72J4,.icon.eGjjbHtkgFc-SYka3LM3M._1uo2TG25LvAJS3bl-u72J4{filter:blur()}._3nzVPnRRnrls4DOXO_I0fn{margin:auto 0 auto auto;padding-top:10px;vertical-align:middle}._3nzVPnRRnrls4DOXO_I0fn ._1LAmcxBaaqShJsi8RNT-Vp i{color:unset}._2bWoGvMqVhMWwhp4Pgt4LP{margin:16px 0;font-size:12px;font-weight:400;line-height:16px}.icon.tWeTbHFf02PguTEonwJD0{margin-right:4px;vertical-align:top}._2AbGMsrZJPHrLm9e-oyW1E{width:180px;text-align:center}.icon._1cB7-TWJtfCxXAqqeyVb2q{cursor:pointer;margin-left:6px;height:14px;fill:#dadada;font-size:12px;vertical-align:middle}.hpxKmfWP2ZiwdKaWpefMn{background-color:var(--newCommunityTheme-active);background-size:cover;background-image:var(--newCommunityTheme-banner-backgroundImage);background-position-y:center;background-position-x:center;background-repeat:no-repeat;border-radius:3px 3px 0 0;height:34px;margin:-12px -12px 10px}._20Kb6TX_CdnePoT8iEsls6{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;margin-bottom:8px}._20Kb6TX_CdnePoT8iEsls6>*{display:inline-block;vertical-align:middle}.t9oUK2WY0d28lhLAh3N5q{margin-top:-23px}._2KqgQ5WzoQRJqjjoznu22o{display:inline-block;-ms-flex-negative:0;flex-shrink:0;position:relative}._2D7eYuDY6cYGtybECmsxvE{-ms-flex:1 1 auto;flex:1 1 auto;overflow:hidden;text-overflow:ellipsis}._2D7eYuDY6cYGtybECmsxvE:hover{text-decoration:underline}._19bCWnxeTjqzBElWZfIlJb{font-size:16px;font-weight:500;line-height:20px;display:inline-block}._2TC7AdkcuxFIFKRO_VWis8{margin-left:10px;margin-top:30px}._2TC7AdkcuxFIFKRO_VWis8._35WVFxUni5zeFkPk7O4iiB{margin-top:35px}._1LAmcxBaaqShJsi8RNT-Vp{padding:0 2px 0 4px;vertical-align:middle}._2BY2-wxSbNFYqAy98jWyTC{margin-top:10px}._3sGbDVmLJd_8OV8Kfl7dVv{font-family:Noto Sans,Arial,sans-serif;font-size:14px;font-weight:400;line-height:21px;margin-top:8px;word-wrap:break-word}._1qiHDKK74j6hUNxM0p9ZIp{margin-top:12px}.Jy6FIGP1NvWbVjQZN7FHA,._326PJFFRv8chYfOlaEYmGt,._1eMniuqQCoYf3kOpyx83Jj,._1cDoUuVvel5B1n5wa3K507{-ms-flex-pack:center;justify-content:center;margin-top:12px;width:100%}._1eMniuqQCoYf3kOpyx83Jj{margin-bottom:8px}._2_w8DCFR-DCxgxlP1SGNq5{margin-right:4px;vertical-align:middle}._1aS-wQ7rpbcxKT0d5kjrbh{border-radius:4px;display:inline-block;padding:4px}._2cn386lOe1A_DTmBUA-qSM{border-top:1px solid var(--newCommunityTheme-widgetColors-lineColor);margin-top:10px}._2Zdkj7cQEO3zSGHGK2XnZv{display:inline-block}.wzFxUZxKK8HkWiEhs0tyE{font-size:12px;font-weight:700;line-height:16px;color:var(--newCommunityTheme-button);cursor:pointer;text-align:left;margin-top:2px}._3R24jLERJTaoRbM_vYd9v0._3R24jLERJTaoRbM_vYd9v0._3R24jLERJTaoRbM_vYd9v0{display:none}.yobE-ux_T1smVDcFMMKFv{font-size:16px;font-weight:500;line-height:20px}._1vPW2g721nsu89X6ojahiX{margin-top:12px}._pTJqhLm_UAXS5SZtLPKd{text-transform:none} c. increase mixing Three Aeration Tanks, Each @ 100 ft. Long, 25 ft. the clarifier is hydraulically overloaded, Effluent Disposal: d. positive displacement. how much surface area of a rotating biological contactor is immerses in the wastewater? Monitor electrical equipment E.coli Test Operate safety equipment . Safety: The course is designed to prepare operators for the Grade 2, 3, and 4 Alabama Wastewater Certification Exams. Another name for a waste stabilization pond is, Wastewater sources & characteristics: Back to CCWP - Steps to becoming certified. b. oils and greases The Wastewater Operator Certification Program is intended to protect public health, environmental quality, and the financial investment of wastewater facilities. These practice tests are a great study tool to add to your Water Distribution Operator Exam studying process. Wastewater Grade 2 t/f. And what online studies did you use? c. rotating feeder how often should the thermal valves be dismantled for service? TABLE OF CONTENTS . Sludge Digestion & Solids Handling: Usually, what is the % accuracy of a graduated cylinder and burette? Wastewater Treatment Operator Certification Exam - 4 Practice Problems Water and Wastewater Courses 6.18K subscribers Subscribe 86K views 5 years ago For practice exams:. When the pump is not running, the water rises in 3 min. DO Pool Chemistry Because water samples sometimes require repeat or backup tests, the amount of sample that should collected for samples that are preserved and transported for any particular analysis should be at least____times the amount for those analysis, Effluent Disposal: d. 100:12:5, Trickling Filters: a bacteria sample must be mailed so that the lab analysis can begin no later than. I just challenged the Water Treatment level 1 exam this Monday and noticed there were questions regarding distribution on it as well. They helped me pass the level 4 wastewater operator test in New Mexico. Class 4 Study Guide Wastewater Operator Certification . Flow Patterns. To help you study for your wastewater treatment operator certification exam, here are four practice problems. /Filter /FlateDecode Southern Illinois Univ. Wastewater Solids Processing: b. food entering the process (solids) What is the odor detection limit of chlorine gas? This course compiles 14 individual lessons into one course to make 16 hours. Approx. The color of the bio-film on a rotating biological contactor that has high sulfur concentrations would appear, Secondary Treatment: Residual Solids Management: a. Waste Treatment Ponds: My score on the exam was a B+ for the level one, my score for other exams have been much better. 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What is the ultimate measure of effective chlorination? $32 c. $36 d. $42.50 Activated Sludge Module 1 . Hb```f``d30 P9eVcrV),VA`}. Class 2 wastewater operator certification examination. a.complete mix aeration Edwardsville, IL 62026-1075 (618) 650-2030 7. Just wanted to make sure Im looking at the right tests/guides. typically, how often should sediment and drip traps be drained in cold water? 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