发信人: Q66 (NextStop), 信区: Environmental
标 题: PE Environmental-分享
关键字: PE ENVIRONMENTAL 环境
发信站: BBS 未名空间站 (Wed May 27 11:41:07 2015, 美东)
今年四月份考的。下面简单分享一下我复习的经验，仅供参考。
1.资料
1) EN Reference Manual: 这个最好把后面的index打印出来到时候好查。还有
summarize里面的一些你觉得重要的公式
2) PE. Env. Sample questions & solutions(NCEES):多做几遍。第一遍可以直接看答
案。第二，第三遍要不看答案自己做出来，就是看到题，知道是哪一类知识，要用哪些
公式。
可以把这里面的一些公式summarize在一个sheet上。
ps:自己做跟看答案真心不一样。还是多动手吧。
3)Practical Design Calculations for Groundwater and Soil Remediation:这个大
概看一下，把一些公式记一下。
4)Wastewater Engineering Treatment and Reuse :这一本我在考试的时候用很多，我
一般直接去看index，然后再去找。蛮有用的。
5)Hazardous Waste Management :这个用了一些。不算太多。
6）Air Pollution Control : A Design Approach 这一本感觉没啥用。但是air在
manual里面也讲的不多。所以，我当时就带上了。找到的信息不是很多。
7)自己准备的binder
- unit conversion:常用的 （比如 MGD to cfs, gpm to cfs）你自己在做题过程中
看到的那些单位转换，都可以记下来。
- 常用公式 & 将公式简化(有些题，有两个公式，其实可以自己花时间将这几个公式
简化成一个，把单位转换也算进去，这样很快)
ld/d= (mg/l) *(MGD)*8.34这个很常用到。
Concentration in ppm to Concentration in ug/m3 or mg/m3.自己总结，都有
一步到位的公式。
note:有些公式你可以试着记起来。
- 一些参数:比如hardness那个conversion factor (appendix 22C)
- 一些常用的appendix ：这个在你做题中，或者是看reference中，看到的，可以总
结在sheet上面
- regulation: 比如ACGIH 的5 CATEGORIES Ａ１－Ａ５（ＣＡＲＣＩＮＯＧＥＮＳ）
, Subtitle D, FEDERAL REGULATION, RCRA ( 这次考了一些D001, D002, D003...），
CFR.
note:自己总结一些。到时候考试的时候方便查。
2. 复习
每天基本坚持看1-2个小时(weekday),weekend的话，周六全天，周日也是两个小时。或
者是周天看书总结，周末做题。
3.考试时间
基本是3个小时考完，因为不会的我直接跳过。还是蛮紧的感觉。
4.以下是我当时考完记下的一些内容
Morning
1. first-order kinetic, two different concentration, to get the time for
the concentration reduction.
2. cadmium removal, lime amount needed
3. Federal regulation for stomwater control: Clean Air Act
4. PH=13, what code for ? RCRA D002 (Ref: haz)
RCRA ：ignitability , corrosivity (ph), reactivity, toxicity.
5. the storage day for large generator: 90 days
6. CT value calculation : wastewater treatment (solution: 27 of 27)
7. oxyegen demand indicator: BOD?
8. Wastewater into a river: mixed concentration
9. retardation, time for concentration migration in groundwater, retarded
velocity
10. Rectangular Weirs: flow (Water Resource)
11. component EW data in a table, to get Alkalinity and hardness
12. Tank size needed: backwash water, sludge amount
13. municipal solid waste: # of location
14. biosolid dewatering
15. radiation shielding (light metal): gamma, alpha,
16. the fate of hydrophobic pollutant – adsorption to the soil???
17. Reynold number -
Afternoon
1. Building downwash: in the dispersion model, how the building downwash
affect the concentration for the receptor near the fence. With downwash, the
concentration in the fenceline will increase or decrease?
Further, most of the changes did not impact concentrations predicted
by the model. One change that was not expected, but that has the potential
to increase concentrations, was a change to the way dispersion is simulated
for stack plumes that are influenced by building downwash. The change has
not been widely publicized, which is puzzling considering the potential
implications resulting from an increase in model-predicted concentrations
for some facilities.
2. Gaussian distribution: 1 km, class D with known Q and wind speed. (
check the figure)
3. So2 control : best method for SO2 control.
4. Medical waste gas: what gas release from medical waste incineration
• HCl, SO2 – acid gas
• NOX
• CO – incomplete combustion
Medical waste incinerators can emit significant quantities of pollutants to
the atmosphere. These pollutants include: (1) particulate matter (PM), (2)
metals, (3) acid gases, (4) oxides of nitrogen (NOx), (5) carbon monoxide (
CO), (6) organics, and (7) various other materials present in medical wastes
, such as pathogens, cytotoxins, and radioactive diagnostic materials
5. Sound pressure level: sound pressure is known
6. Greenhouse gas:
7. Superfund
8. CSRF in series- what is the overall convention rate
9. ESP: deutich equation
10. Minimum brake horsepower
11. Baghouse: material for different temperature, 375 F
12. NOSHA: REL
13. Personal protection facility
14. PV=n.R.T, different V, different T,
15. critical path
16. ppm to ug/m3
17. Institutional control
18. air sparging, SVE methods
19. packing depth Z=HTU *NTU
20. what is riparian zone?
21. two components with different pressures, % mixture pressure
22. What is MACT rule dealing with?
23. A large city with a few high Ozone and CO days in a year.
Nonattainment area. What is the most possible contributing source.
24. A question related to baghouse design. A similar question can be
found in Air Pollution Control.
25. With known sulfur content, ask you how much SO2 will be emitted.
26. Emissions from coal, lb/mmbtu x mmbtu
27. What facility uses tetrachloroethylene?
28. A few questions regarding to Phase I.
29. A unknown gas, not harmful to skin. What protection is needed?
30. Given some parameter in a table, what protection to choose?
31. Calculate how much NH3 need to reduce NO2.
32. PM emissions calculation using gr/scfm x scfm
33. How to reduce the PM collection in a baghouse? To add a cyclone in
the front.
34. # of baghouse
35. VOC pollutant
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Friday, June 12, 2015
PE Environmental
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