illinois class 4 wastewater practice test

b. concentration c. sludge age What would be the most probable cause for gas leaking through the pressure relief valve on the digester's roof? (Time of day), Waste Treatment Ponds: How many stages are usually present in the rotating biological contactor process? Colorado uses the 2019 edition of standard, sequential examinations developed by the Association of Boards of Certification (ABC) for all classes of certificates, except Classes "S" and "T" which are custom exams. Please take this quiz and check how well do you know about CA water treatment plant operator! d. phosphate-free surfactant, Activated Sludge: The most common flow-measure device for wastewater is a_____, Wastewater Treatment Facilities: c. rotating feeder Residual Solids Management: When an electrolyte is dissolved in water to form an ion, the ion is said to be________, Basic Chemistry: All I used were the study guide modules 1 and 2 on this website https://royceu.com/Public/PracticeQuizes.aspx I kept doing them until I was getting scores above 90. ._3bX7W3J0lU78fp7cayvNxx{max-width:208px;text-align:center} Which one of the following best defines the term stray-current corrosion? Primary treatment is not required in which modified activated sludge process? Sludge Digestion & Solids Handling: Sludge Digestion & Solids Handling: c. sulfuric acid Given the following information: -aerobic digester dissolved oxygen level is at 3.5 mg/L. Usually, what is the % accuracy of a graduated cylinder and burette? Grade 4 Wastewater Certification Wastewater Extra Questions Grade 1 Wastewater certification review grade. 78 terms. What organism would most likely enhance the penetration of oxygen into the activated sludge, Rocks/Screens/Comminutors & Grit Removal: What is the most accurate measure of the organisms present in an aerator for treating incoming wastes? You have already completed the quiz before. d. mixing, Sludge Digestion & Solids Handling: The exam consists of 100 multiple choice questions. b. bleach b. nitrogen d. compost. 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? Rotating Biological Contactors: It doesn't appear in any feeds, and anyone with a direct link to it will see a message like this one. Safety: Which one of the following methods would not be used to feed DRY chemicals? If the sewer rate is $25 for the first 500ft and all wastewater generated over that amount is billed at the rate of $2.50 per 100ft3, how much would a customer generating 1200ft2 of wastewater be billed? Operators should use special precautions when placing anaerobically digested sludge on a drying bed because sludge contains what gas? Collection Class 3; Collection Class 4 - most advanced level Small wastewater system operators oversee wastewater systems serving fewer than 3,300 persons. Math guides, tutorials, tips, and practice quizzes. Which one of the following solids treatment methods can be classified as both stabilization and dewatering? 0000004525 00000 n a. nitrate I included the answers at the bottom of this page. A problem with odors from trickling filters may be solved by: ISAWWA offers a full range of online classes, all approved by the IEPA with RTC hours. Verified questions. d. have a density significantly greater than water, contain 20-25% nonvolatile inorganic matter. c. complex mix aeration Reliability can only . Approved Training Provider - Indiana, Illinois, Ohio, Delaware, Alabama, Maryland, Idaho, North Carolina, South Carolina, Virginia, West Virginia, Tennessee and Kentucky. What type of feeder would always feed a gas? d. low operating costs, as they are east to run, Secondary Treatment: When is the pH in a waste pond the highest? Activated Sludge: Ponds used in series after a trickling filter are sometimes called? Low-temperature water can be compensated for when using alum by______, Basic Chemistry: Sludge Digestion & Solids Handling: c. flammable oils 4 stages 4 g.async=!0,g.src=t,h.appendChild(g)} Wastewater Solids Processing: Bacteria in an anaerobic digester will effectively utilize: Name the solids treatment method that has a solids buildup which forms a blanket on the bottom and forces the water out due to compression? b. correct faulty plant operation Secondary clarifiers are usually located after: To go to the Class 2 & 3 Study Guide Click on above tab. 5,$>/SFZ=_Y;PA v UhK1.N7,#Fi__&5&h5mm>b8AE^dGP7\A6fS-/z%o%ND(uaheK^R`;tf![mIMv=X%[ej1v!OypyRO5Qje|=:"*!KUgJ}-*C_.>(P@&iGl/W"-vZe0}[T]]M AWw4q:;) x~H60qg;05?R52NQD* oqIyyydw/5[yU f[Wo3Z0/=y_avd67!@vP1[ =7$F5]X\. a. improve housekeeping The full practice test is randomly generated from a database of hundreds of questions, meaning no two test are ever exactly the same. c. secondary sludge The color of the bio-film on a rotating biological contactor undergoing nitrification would appear? Classes will Start September 7, 2021 and meet twice per week (Tues & Thurs) for six weeks, ending on October 14, 2021. Practice Tests. c. vacuum filters b. improve operations before digester 10 PPM. + Student Resources. a. heavy metals High suspended solids and BOD are most probably associated with which type of organisms? The best operation performance for an anaerobic digester is when it is feed Which type of feeder would most likely feed clear solutions? 0000001026 00000 n -the tank is exhibiting high rates of foaming. Class 2 wastewater operator certification examination. Please select the correct language below. Please sign in to share these flashcards. The most common pathogen identified in waterborne disease outbreaks in the United States is_______, Water and Wastewater Microbiology" Its a 2 year old post and have then since passed my 3 and ready to take my 4 next year. Enhanced Biological (Nutrient) Control: f. white, Odor Control: 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? The industrial Class Kand 10 -WR (general) exam has a total of 14 questions, 7 multiple choice and 7 short answer/essay. Royceu.com is where you wanna go. ._2ik4YxCeEmPotQkDrf9tT5{width:100%}._1DR1r7cWVoK2RVj_pKKyPF,._2ik4YxCeEmPotQkDrf9tT5{display:-ms-flexbox;display:flex;-ms-flex-align:center;align-items:center}._1DR1r7cWVoK2RVj_pKKyPF{-ms-flex-pack:center;justify-content:center;max-width:100%}._1CVe5UNoFFPNZQdcj1E7qb{-ms-flex-negative:0;flex-shrink:0;margin-right:4px}._2UOVKq8AASb4UjcU1wrCil{height:28px;width:28px;margin-top:6px}.FB0XngPKpgt3Ui354TbYQ{display:-ms-flexbox;display:flex;-ms-flex-align:start;align-items:flex-start;-ms-flex-direction:column;flex-direction:column;margin-left:8px;min-width:0}._3tIyrJzJQoNhuwDSYG5PGy{display:-ms-flexbox;display:flex;-ms-flex-align:center;align-items:center;width:100%}.TIveY2GD5UQpMI7hBO69I{font-size:12px;font-weight:500;line-height:16px;color:var(--newRedditTheme-titleText);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.e9ybGKB-qvCqbOOAHfFpF{display:-ms-flexbox;display:flex;-ms-flex-align:center;align-items:center;width:100%;max-width:100%;margin-top:2px}.y3jF8D--GYQUXbjpSOL5.y3jF8D--GYQUXbjpSOL5{font-weight:400;box-sizing:border-box}._28u73JpPTG4y_Vu5Qute7n{margin-left:4px} For an examinee or testing client unfamiliar with the Association of Boards of Certification's computerized exams, Experience ABC's Computerized Exams gives a closer look. If the manometer indicates the gas pressure in a digester is below normal, what would be the most probable cause? d. plunger feeder, Solids removal from secondary effluent: that is they must test what they are supposed to test. Mixed liquor is a combination of what 3 things? I did my collection lvl4 and treatment lvl4, failed both, 8 year in the industry, tough exam. Tightened down to a drip. Which method would not be used to feed LIQUID chemicals? Sorry, your blog cannot share posts by email. What is the critical factor in any method to control the aeration tank? The passing grade is 70%. d. preaeration. During the exam, . a. incinerated material This test is designed to simulate the actual Wastewater exam as closely as possible. 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. ._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} Which organism wold most probably be associated with moderate sludge age and effluent water quality, Wastewater sources & characteristics: How ofter should the drive bearings be greased in a rotating biological contactor unit? Water and Wastewater Microbiology" 2019 Association of Boards of Certification.

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