Experience sharing on the basic exam for registered environmental engineers
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1. According to the syllabus for the basic examination for registered environmental engineers, there are a total of 15 courses in this basic examination: 9 courses related to general knowledge and 6 courses related to specialized knowledge. 2. In terms of the distribution of scores across the questions: a) There are 24 questions on advanced mathematics, which account for 20% of the total score for the morning session of the exam； b) The three core mechanics courses (theoretical mechanics, material mechanics, and fluid mechanics) account for 30 points and 25% of the total; thus, these four courses are the focus of the morning exams, making up 45% of the morning exam content. 3. From the perspective of professional fundamentals, each question is worth 2 points, and this is also a key area for scoring; one can focus on the questions related to their own field of specialization (wastewater, exhaust gases, solid waste) in order to earn more points on those topics they are more familiar with. Therefore, the professional foundation exam is the key to scoring well in the entire examination; answering one question correctly is equivalent to answering two questions correctly in the general foundation section. I passed the basic examination last year, with the following scores: 58 in the morning session and 76 in the afternoon session, for a total of 134 points. The passing score was 132 points. I scored well in the afternoon exam because I am relatively familiar with the subject matter; however, I hadn’t studied the general knowledge topics for three years, which is why my score in that section was lower. 4. Based on the exam questions I took, I personally think it’s necessary to carefully work through the examples and practice problems in the two review tutorials, trying to understand them thoroughly, as it is very helpful for the exam. 5. The two books I read before the exam were: \"Basic Examination (Volume 1) Review Tutorial for the Registered Environmental Engineer Practice Qualification Examination\" published by Tianjin University Press, and the book edited by Hao Jiming (which, in my opinion, is of poor quality). The above are purely based on personal experience and are for reference only; those who pass the basic exam are encouraged to add more information. Wish those taking the basic exam this year success in passing it! Actual questions from the 2008 Foundation Exam for Environmental Protection Engineers (Part 1 and Part 2): http://bbs.hcbbs.com/thread-274664-1-2.html. This post was last edited by chaochao on 2008-12-26 at 09:16
Who has some electronic simulation questions that they can share? I haven’t taken the exam yet, so I don’t know what the questions will look like: Q
Actual questions from the 2007 Certified Environmental Engineer exam. Actual questions from the 2007 Certified Environmental Engineer exam – Fluid Mechanics. 1. What is the ratio of the average cross-sectional flow velocity to the maximum flow velocity within that cross-section? Half 2. Given speed u, length l, and dynamic viscosity μ, find the formula for the dimensionless quantity: U²l/μ, Ul²/μ, Ul/μ. There’s another option that was forgotten; in these formulas, the 2 values represent squares. The answer is Ul/μ. 3. For a parallel pipeline system, Q=0.08 m³/s, d1=d2=200, L1=400, L2=800. What are the values of Q1 and Q2? A. Q1=0.047, Q2=0.033 B. Q1=0.053, Q2=0.037 C. D. The answer is A; options C and D can be ruled out since Q1+Q2 is not equal to 0.8. The formula for this question is in the morning exam manual. 4. How does the velocity of subsonic airflow change as the flow cross-section increases? Increase, decrease, unchanged, cannot be determined. Answer: Decrease. 5. What could be the speed range of subsonic gas at 250 m/s after passing through a converging cross-section? A: Greater than 250 m/s and less than or equal to 340 m/s. 6. For a prismatic open channel with a trapezoidal cross-section, the bottom width is 2 m, the slope coefficient is m=1.5, the water depth is h=1.5 m, n=0.025, and i=0.002. Determine the cross-sectional flow rate: A. 16.40 B. 10.31 C. 18.00 D. 21.10. I got 10.31 as my answer; I’m not sure if it’s correct. 7. For the small bridge’s opening, based on the principle of gravitational similarity, the opening is 24 m wide, the flow rate is 30 m3/s, and the flow rate scale is 30; determine the flow rate through the model. 8. One water pump, driven initially by a belt; flow rate of 0.0735 m3/s, shaft speed of 1420 revolutions per minute, power of 3.3 KW, and head of 14.65 meters. Now it operates on its own when powered directly; the shaft speed is 1450. What are the flow rate, head, and power respectively? A has a power of 3.5KW. The head is 15.28, I think, and the flow rate is 0.075. There is a question that involves calculating the seepage coefficient K for a deep well; the influence radii R used for these calculations are 2000r0 and 3000r0 respectively, and it is necessary to find the ratio of K values. 2007 Actual Questions for the Certified Environmental Engineer Exam -- Microbiology 11. What is the internal structure that affects enzyme activity? 1. Catalytic group ； 2. Active groups ； 3. Substrate ； 4. Polypeptide chain Answer: 4. Polypeptide chain 12. Which bacteria convert organic macromolecules into organic acids during anaerobic processes? A: Fermenting bacteria ； B: Hydrogen- and acetate-producing bacteria ； C: Methanogens ； D: Homologous acetogenic bacteria. Answer: A. 13. Which of the following non-prokaryotic organisms plays a role in wastewater treatment? A: Indicator organism ； B: Predating bacteria, organic matter? ； C: Promote precipitation ； D: It seems to be breathing to release oxygen? Answer 14: During the four stages of microbial growth, capsule formation occurs in which stage? A. Lag phase ； B. Log phase ； C. Stable phase ； D. Decline phase. Answer: C. 15. Calculation of the generation cycle of microorganisms – I can’t remember the parameters; I chose 23 generations. From the actual questions in the 2007 Environmental Protection Engineer Examination – Environmental Monitoring and Planning. 17. A noise source is located 16 meters away from residential houses, and a noise level of 80 dB was measured 2 meters away from the source. A machine is 20 m away from residential houses, and a noise level of 74 dB was measured 5 m from the machine. The noise level measured at the residential housing area is ( ). A、124db B、62db C、65db D、154db. The correct answer is C, 65. Explanation: 74 – 20lg(20/5) = 62db; 80 – 20lg(16/2) = 62db; 62 + 10lg2 = 65. 18. For an ammonia solution with a concentration of 0.1 mol/l, Kb = 1.77*10^-5. So what is its pH value? 11, 12, 13, 14 Answers: 11. Explanation: Determine the concentration of OH, and then use 14 – lg-. 19. In atmospheric monitoring, if pollution sources are distributed evenly, what sampling method can be used? Options: grid layout, concentric circle layout, fan-shaped layout, and one more I can’t remember. Answer: Grid spacing 20; list other impurities that may affect the spectrophotometric measurement of ammonia nitrogen in water using Nessler’s reagent: 1. KI ； 2.CO2 ； 3. Chroma ； 4. Ferrous ions ； 5. Hydroxides ； 6. Sulfides ； 7. Chlorophenols ； 8. Aldehyde ； 9. The same ； 10. Turbidity: A, (124678); B, (13568.10); C, (23589.10); D, (3.4.6.8.9.10). The answer is: D. 21. Which of the following is not an API monitoring parameter? A. CO; B. TSP; C. SO2; D. O3. There is disagreement regarding the answer: all of them are considered API parameters, but many people choose D. There are those who agree to choose A. 22. To prepare 1000 milliliters of a 0.1 mol/L Cr(Ⅶ) solution, the molecular weight of potassium dichromate is 294.2 and that of chromium is 52. How much potassium dichromate is required? 23. There is a problem related to calculating the concentration of suspended solids in wastewater samples. First, the weighing flask and filter paper are weighed to determine their constant mass, which is M1. Then, 100 mL of the water sample is filtered and placed in the weighing flask. After drying and cooling, the mass is M2. What is the concentration of suspended solids in the wastewater? What type of toxicity is primarily tested in the experiment of administering it to 24 rats via gastric infusion for 48 hours? Acute toxicity 25. There is also a question related to scenario analysis; choose D: Static scenario. 26. Which of the following, together with the environmental baseline values, can reflect human pollution of the environment? (I’m not sure if that’s how it’s expressed; it seems not.) 1. Environmental baseline value. 2. Environmental background value. 3. Forgot. 4. Current measured value. Answer: 27. When evaluating using the environmental quality index, it is not necessary to take into account... Options include local environmental quality, the number of times pollutants exceed the allowable levels, and the number of pollutants that exceed these limits, etc. 28, 29, 30, 31, 32………… Real exam questions from the 2007 Environmental Protection Engineer Examination – Pollution Control. 33. Pretreatment is carried out before sludge filtration; the method used for this pretreatment is chemical treatment ； Heat treatment ； I can’t remember the other two options; most people chose the chemical treatment method. 34. During waste incineration, the actual amount of air used for combustion is usually expressed as a multiple m of the theoretical amount of air required, and this value is known as the air ratio or excess air coefficient. If the excess oxygen content in the flue gases is 6%, determine the excess air coefficient m for this incineration system (assuming the CO content in the flue gases is 0, but the oxygen content is 79%). (A) 1.00 (B) 0.79 (C) 1.40 (D) 1.60 Answer: C, 1.40. 35. Assume that air consists only of 21% oxygen and 79% nitrogen. When a fuel burns in dry air, the flue gas contains 10% CO2, 4% O2, and 1% CO, as measured. So, what is the air excess coefficient? 1.15 1.04 1.22 1.18 The answer to this question is 1.18; it is Example 36 from the book on air pollution control. 36. Other ways in which biofilms contribute to wastewater treatment include slowing down the aging of biofilms, facilitating their removal, and promoting the formation of new biofilms. 37. Calculation of the oxygen demand for solid waste: Calculate the amount of oxygen required to oxidize 1000 kg of organic matter. Given: the chemical composition is (C6H7O2(OH)3)5; after the reaction, 400 KG remain with a composition of (C6H7O2(OH)3)2. The amount of oxygen required is 708 KG. This is the original question from page 767 of the book. 38. Wastewater is discharged into a river; the maximum flow rate of this wastewater is 10,000 m3/d, with a BOD5 value of 20 mg/L. The water temperature is 20°C. The minimum flow rate of the river is 0.5 m3/s, and the dissolved oxygen level is saturated at a temperature of 20°C. There are no organic substances present in the water. The wastewater mixes instantaneously with the river water, and the oxygen consumption rate constant K1 is 0. 434/d, K1′=0.1/d; calculate the BOD5 concentration of river water after 2d. A. 2.44mg/L B. 2.78mg/L C. 1.50mg/L D. 2.05mg/L The question is flawed; the exam manual specifies that k=0.434k’, yet the value given in the question is 10 times different, so this question is incorrect. There is no answer. 39. Ignoring biosynthesis and based solely on theoretical calculations, how much organic matter (expressed in terms of COD) is required for facultative denitrifying bacteria to completely reduce 1 g of nitrate nitrogen in wastewater to nitrogen gas? (A) 1.72 mg (B) 2.86 mg (C) 2.02 mg (D) 3.86 mg 40. When 0.1 mg of nitrate is reduced to nitrogen gas, how much organic matter is consumed (expressed in terms of COD)? 41. A wastewater treatment plant has a treatment capacity of 10,000 m3/day. The hydraulic retention time in the aeration tank is 6 hours, and the sludge concentration is 400 mg MLSS/L. The sludge concentration at the bottom of the secondary sedimentation tank is 8,000 mg MLSS/L. Assuming that the SS levels in the inlet and outlet water can be ignored, calculate the amount of excess sludge that needs to be removed from the bottom of the secondary sedimentation tank per day in order to maintain a sludge age of 15 days in the activated sludge system. (A) 45.0 m3/day (B) 53.3 m3/day (C) 83.3 m3/day (D) 120.0 m3/day. Answer: C. 83.3
41. The main mechanisms by which anionic organic polymer flocculants remove colloidal particles from water are: a) compression of the double electric layer, b) electrical neutralization, c) adsorption and bridging, d) precipitation and trapping. The correct answer is C.
42. A wastewater treatment plant treats 10,000 tons of wastewater per day, with a BOD level of 20 mg/L. Meanwhile, a river contributes 0.5 tons of wastewater per second. Assuming complete mixing, calculate the BOD level after two days. The sample used for testing consists of 300 ml, of which 200 ml is raw water. The dissolved oxygen levels before and after incubation are 8.37 mg/L and 1.38 mg/L respectively, while the dissolved oxygen levels before and after dilution are 8.85 mg/L and 8.78 mg/L respectively. Calculate the BOD5. This is a similar type of question found in the practice tests for the second volume of Tian Da’s textbook; you can use those as a reference for calculations.
43. For electrostatic precipitators, one has a removal efficiency of 70% and another has 90%. What is the combined removal efficiency when they are used in series? ( ) 90%, 99%, or between 90% and 98%.
45. In a certain city, the coal consumption in 2004 was 3,000 tons, with a sulfur content of 3%. Of this sulfur, 15% ends up in the combustion residues. According to air quality regulations, the SO2 emissions in 2010 were 90 tons. Calculate how much less coal needs to be used on average each year. A) 15 tons, B) 9 tons, C) 7.5 tons, D) 10.5 tons. Answer: D, 10.5 tons. Calculation: 3,000 * 3% * 0.85 * 2/6 = 10.5 tons. Specific emissions: 153 tons in 2004 – 142.5 tons in 2005 – 132 tons in 2006 – 121.5 tons in 2007 – 111 tons in 2008 – 100.5 tons in 2009 – 90 tons in 2010.
46. Before and after noise control measures were implemented in a factory, the mixing time was 4.5 seconds and 1.2 seconds respectively. What is the decrease in decibels? Calculation formula: Noise reduction amount = 10lg(T1/T2) = 5.74, (T1=4.5, T2=1.2). 47. If a soundproof wall reduces the intensity of sound at 800 Hz by 38 decibels (the exact figure is uncertain), then what will be the reduction in sound intensity when sound at 1200 Hz passes through it? 48. During the self-purification process, which of the following is an indication that water quality is improving? A: Rotifers appear; the other options seem to be decreased dissolved oxygen and increased organic matter... 49. What discharge standards should be followed for wastewater entering a secondary sewage treatment plant? Level 1, Level 2, Level 3, Level 4. Answer: Level 3. 50. It’s a multiple-choice question regarding the calculation of the maximum concentration at the ground level; all parameters are given. It’s also a question involving the superposition of three electromagnetic fields: E1=15, E2=20, E3=25. The resulting field strength is most likely to be one of the following: A15, B25, C35, D60. 51. There’s another question related to the nitrate digestion process: NO3– → NO2– → N2. The answer is A. I think it’s supposed to be that NO3 is directly denitrified to form N2, but that seems incorrect. 52. The effective height of the chimney and the wind speed are given; the concentration on the ground axis at a distance of 500 meters is calculated to be A=22.7 micrograms per cubic meter. This is also an example from a book on air pollution control. 53. Why does China regulate the agricultural use of sludge composting? Answer: To prevent the accumulation of heavy metals. Real questions from the 2007 Environmental Protection Engineer Examination – Laws and Regulations. 56. In which year was the Law of the People’s Republic of China on the Prevention and Control of Environmental Pollution by Solid Wastes implemented? A: April 1, 1997 B: C: April 1, 2005 D: Answer: C. 57. Is there still production of leaded gasoline, which is explicitly prohibited? 1. Immediately cease its illegal activities, and impose a fine of 20,000 to 200,000 (I chose this one; it was a random selection). 2. Immediately cease its illegal activities, and confiscate all illegal gains as well as the equipment and materials used for production. 3. Immediately cease its illegal activities, with a fine of up to 500,000 at most. 4. I forgot; it definitely isn’t this one. The provisions in laws and regulations regarding the handling of leaded gasoline are as follows: B orders that such activities be stopped, and any illegal gains as well as the leaded gasoline produced and sold must be confiscated. 58. Noise… Which of the following is not covered by this law? A. Factories… B. Transportation… C. The workers themselves… D…. 59. A large steel (coal-fired) enterprise was established before January 1, 1997, but it was not registered at that time. The registration was successful on February 1, 1997. So, which of the following standards should this company follow? Yes, I will; I won’t do it. 1. Comprehensive emission standards for air pollutants. 2. Industrial furnaces and kilns. . . Standard 3. I think so. . . . . Trial Standard 4: “Emission Standards for the Iron and Steel Industry”. In accordance with the principle of non-overlapping application of standards, industry-specific standards take precedence; therefore, the “Emission Standards for the Iron and Steel Industry” should be adopted. 60. Feel free to provide further details! This post was last edited by youngor on 2008-9-28 11:37.]
41. The main mechanisms by which anionic organic polymer flocculants remove colloidal particles from water are: a) compression of the double electric layer, b) electrical neutralization, c) adsorption and bridging, d) precipitation and trapping. The correct answer is C.
42. A wastewater treatment plant treats 10,000 tons of wastewater per day, with a BOD level of 20 mg/L. Meanwhile, a river contributes 0.5 tons of wastewater per second. Assuming complete mixing, calculate the BOD level after two days. The sample used for testing consists of 300 ml, of which 200 ml is raw water. The dissolved oxygen levels before and after incubation are 8.37 mg/L and 1.38 mg/L respectively, while the dissolved oxygen levels before and after dilution are 8.85 mg/L and 8.78 mg/L respectively. Calculate the BOD5. This is a similar type of question found in the practice tests for the second volume of Tian Da’s textbook; you can use those as a reference for calculations.
43. For electrostatic precipitators, one has a removal efficiency of 70% and another has 90%. What is the combined removal efficiency when they are used in series? ( ) 90%, 99%, or between 90% and 98%.
45. In a certain city, the coal consumption in 2004 was 3,000 tons, with a sulfur content of 3%. Of this sulfur, 15% ends up in the combustion residues. According to air quality regulations, the SO2 emissions in 2010 were 90 tons. Calculate how much less coal needs to be used on average each year. A) 15 tons, B) 9 tons, C) 7.5 tons, D) 10.5 tons. Answer: D, 10.5 tons. Calculation: 3,000 * 3% * 0.85 * 2/6 = 10.5 tons. Specific emissions: 153 tons in 2004 – 142.5 tons in 2005 – 132 tons in 2006 – 121.5 tons in 2007 – 111 tons in 2008 – 100.5 tons in 2009 – 90 tons in 2010.
46. Before and after noise control measures were implemented in a factory, the mixing time was 4.5 seconds and 1.2 seconds respectively. What is the decrease in decibels? Calculation formula: Noise reduction amount = 10lg(T1/T2) = 5.74, (T1=4.5, T2=1.2). 47. If a soundproof wall reduces the intensity of sound at 800 Hz by 38 decibels (the exact figure is uncertain), then what will be the reduction in sound intensity when sound at 1200 Hz passes through it? 48. During the self-purification process, which of the following is an indication that water quality is improving? A: Rotifers appear; the other options seem to be decreased dissolved oxygen and increased organic matter... 49. What discharge standards should be followed for wastewater entering a secondary sewage treatment plant? Level 1, Level 2, Level 3, Level 4. Answer: Level 3. 50. It’s a multiple-choice question regarding the calculation of the maximum concentration at the ground level; all parameters are given. It’s also a question involving the superposition of three electromagnetic fields: E1=15, E2=20, E3=25. The resulting field strength is most likely to be one of the following: A15, B25, C35, D60. 51. There’s another question related to the nitrate digestion process: NO3– → NO2– → N2. The answer is A. I think it’s supposed to be that NO3 is directly denitrified to form N2, but that seems incorrect. 52. The effective height of the chimney and the wind speed are given; the concentration on the ground axis at a distance of 500 meters is calculated to be A=22.7 micrograms per cubic meter. This is also an example from a book on air pollution control. 53. Why does China regulate the agricultural use of sludge composting? Answer: To prevent the accumulation of heavy metals. Real questions from the 2007 Environmental Protection Engineer Examination – Laws and Regulations. 56. In which year was the Law of the People’s Republic of China on the Prevention and Control of Environmental Pollution by Solid Wastes implemented? A: April 1, 1997 B: C: April 1, 2005 D: Answer: C. 57. Is there still production of leaded gasoline, which is explicitly prohibited? 1. Immediately cease its illegal activities, and impose a fine of 20,000 to 200,000 (I chose this one; it was a random selection). 2. Immediately cease its illegal activities, and confiscate all illegal gains as well as the equipment and materials used for production. 3. Immediately cease its illegal activities, with a fine of up to 500,000 at most. 4. I forgot; it definitely isn’t this one. The provisions in laws and regulations regarding the handling of leaded gasoline are as follows: B orders that such activities be stopped, and any illegal gains as well as the leaded gasoline produced and sold must be confiscated. 58. Noise… Which of the following is not covered by this law? A. Factories… B. Transportation… C. The workers themselves… D…. 59. A large steel (coal-fired) enterprise was established before January 1, 1997, but it was not registered at that time. The registration was successful on February 1, 1997. So, which of the following standards should this company follow? Yes, I will; I won’t do it. 1. Comprehensive emission standards for air pollutants. 2. Industrial furnaces and kilns. . . Standard 3. I think so. . . . . Trial Standard 4: “Emission Standards for the Iron and Steel Industry”. In accordance with the principle of non-overlapping application of standards, industry-specific standards take precedence; therefore, the “Emission Standards for the Iron and Steel Industry” should be adopted. 60. Feel free to provide further details! This post was last edited by youngor on 2008-9-28 11:37.]
Key topics that may appear in the case study section of the Environmental Impact Assessment Engineer exam in 2008 – Part 1: Issues that can arise in any case study related to any industry: 1. Whether the construction project is in line with industrial policies (candidates should pay attention to the new list of guidelines for industrial policies). For industries with specific requirements, relevant regulations must be specified (these will be summarized over time). For projects without such special requirements, these points should also be addressed when answering the questions. The following viewpoints can be referred to: 2. Site selection for projects. For such projects, attention should be paid to the regulations regarding site selection in specific industries (such as waste treatment and disposal industries) ； ) as well as projects and areas prohibited from construction by laws and regulations. (No specific summary content available yet) 3. Issues related to applicable standards: Based on the project characteristics and environmental features provided in the case study. Identify the appropriate quality standards and emission standards. 4. Key environmental sensitive areas and conservation targets: It is necessary to be aware of which targets need to be given attention during environmental impact assessments, which are the conservation targets that require careful consideration, as well as the degree of protection required for these targets. Generally, environment-sensitive targets include residential areas, schools, hospitals, nature reserves, scenic spots, cultural heritage sites, water source protection areas, rivers, reservoirs, protected farmland, and habitats for rare animals and plants. These sensitive sites have their environmental function requirements and the environmental standards to be implemented specified in relevant regulations or plans. 5. The main environmental impact issues of the project should be addressed by considering three aspects: 1) The main environmental problems during the project’s construction phase: these generally include noise, dust, wastewater, and soil erosion ； 2) Major environmental issues during the operation period: When answering questions, it is necessary to take into account the specific conditions of the project; these typically include issues related to air quality, water, noise, and solid waste. 3) Major environmental issues during the decommissioning period: These are relevant to certain industries, with water pollution being the main concern in most cases. 6) Key issues in project evaluation: Based on the project analysis and the identified major environmental issues, other factors also need to be considered. 7) Topics for the assessment in the environmental impact assessment engineer exam: Answers should be formulated by referring to the methods outlined in books related to points 5 and 6. 8) Main environmental protection measures for the environmental impact assessment engineer exam: Specific measures should be determined based on the various environmental issues present in the project; at the same time, it is important to be familiar with the general measures mentioned in relevant books. 9) How to facilitate public participation in environmental impact assessments for the environmental impact assessment engineer exam: It is necessary to define the objectives of public participation according to the characteristics of the project, carry out targeted activities to enhance the effectiveness of environmental impact assessments, and raise public awareness of environmental issues through such activities. (1) Time: Public participation is carried out during the project feasibility study phase. (2) Organizer: Project construction unit ； Coordinating parties: The administrative department in charge of environmental protection, and the environmental impact assessment agencies. (3) Participation aspects: site selection for the project, construction plan, environmental impact, etc. (4) Job responsibilities: Make the information specified in environmental impact assessment documents public to alleviate residents’ concerns. Public opinions can be sought through surveys, seminars, hearings, etc., and experts can be organized to review those opinions. Convene representatives of affected residents, local *** officials, and relevant management personnel for a symposium to hear their opinions and suggestions on aspects such as the project plan and environmental protection requirements. Consultation and complaint hotlines can also be established, allowing residents to stay informed about pollution levels and file complaints about illegal activities at any time. 10 Environmental Risk Assessment Questions Last edited by youngor on 2008-9-28 11:37]
Thank you, I’m also planning to take the foundation exam this year
Thank you! I have an exam too! I just don’t have time to review it; it will be very helpful once I read it.
It seems that the professional foundation courses are relatively easy to score on, while the public foundation courses are far too difficult.
During the learning process, there are opportunities to seek advice from various teachers
Are there any basic review materials? That would be the best
I searched for a long time before I finally found it; it’s very helpful for preparing for exams. Thank you!
I’m asking the original poster for help – I haven’t started reviewing at all yet. I plan to read a lot these days; could you highlight the key points?