For the convenience of students studying and carrying, it has been divided into two volumes.
Volume 1 consists of the text and practice problems for each subject, and Volume 2 consists of CBT past exam questions and explanations for past exam questions from previous years.

PART 00.
Basic Concepts of Environmental Engineering
Chapter 01.
Units and dimensions
Chapter 02.
Fundamentals of Engineering

PART 01.
Introduction to Air Pollution
Chapter 01.
The nature of the atmosphere
Chapter 02.
Historical events of air pollution
Chapter 03.
Types of air pollutants
Chapter 04.
Sources of air pollutants
Chapter 05.
Photochemical reactions in the atmosphere
Chapter 06.
Damage from air pollutants
Chapter 07.
Atmospheric stability
Chapter 08.
Air pollution modeling
Chapter 09.
Atmospheric thermodynamics

PART 02.
Combustion Engineering
Chapter 01.
Combustion theory
Chapter 02.
Types and features of combustion devices
Chapter 03.
Combustion calculation
Chapter 04.
Equivalence ratio and combustion thermochemistry
Chapter 05.
chemical reaction rate equation
Chapter 06.
Correction according to changes in the state of exhaust gas (temperature, pressure, etc.)

PART 03.
Air pollution prevention technology
Chapter 01.
Hazardous gas treatment technology
Chapter 02.
Dust collection and removal technology
Chapter 03.
Efficiency and pass rate
Chapter 04.
Ventilation and ventilation

PART 04.
Air Pollution Process Testing Standards
Chapter 01.
General Test Methods (General Chemical Analysis)
Chapter 02.
Sampling method
Chapter 03.
Device analysis method
Chapter 04.
Emission gas testing methods (test methods by item)
Chapter 05.
Emission Gas Testing Method (Test Method by Item, Metal Substances)
Chapter 06.
Emission Gas Testing Method (Test Method by Item, Volatile Organic Compounds)
Chapter 07.
Continuous automatic measurement method of exhaust gas
Chapter 08.
Analysis of emissions into the atmosphere

PART 06.
Practical CBT past exam questions and previous year's exam answers

Article CBT past questions 1
Article CBT past questions 2
Article CBT past questions 3 times
Article CBT past questions 4 times
Article CBT past questions 5 times
Article CBT past questions 6
Article CBT past questions 7
Article CBT past questions 8
Article CBT past questions 9
10 Past Questions from the CBT (1st Exam in 2025)
Article CBT Past Questions 11th (2nd Exam in 2025)
12th CBT exam questions (3rd exam in 2025)
2022 1st and 2nd Air Environment Engineer Exams
2021 1st, 2nd, and 4th Air Environment Engineer Exams
2020 1st and 2nd Integrated, 3rd and 4th Air Environment Engineer Exams

1st CBT mock exam for the Air Environment Industry Engineer
2nd CBT mock exam for the Air Environment Industry Engineer
3rd CBT mock exam for the Air Environment Industry Engineer
4th CBT mock exam for the Air Environment Industry Engineer
5 CBT mock exams for the Air Environment Industry Engineer exam
6th CBT mock exam for the Air Environment Industry Engineer
2020 1st and 2nd Integrated, 3rd Air Environment Industry Engineer Exam

Since its first publication in 2015, this book has been widely known as the most beloved textbook for atmospheric environmental engineering exam takers nationwide.

Based on my experience of teaching water quality environment certification in the field for over 20 years, I provide students taking the atmospheric environment (industrial) engineer exam with a condensed written exam preparation course, and I also considered the smooth connection to practical exam preparation.

For non-majors and beginners, the book provides detailed explanations of the fundamental concepts of environmental engineering (basic engineering calculations, engineering terminology, etc.), and provides detailed explanations of practice problems for each unit carefully selected from important past exam questions to enhance the completeness of learning and understanding.

We have significantly reduced the amount of study and memorization required for vague and unfamiliar subjects related to the fair examination standards, thereby helping to alleviate anxiety.

We are presenting the ability to pass the exam economically and efficiently by minimizing the trial and error of memorizing past exam questions without any background knowledge of the theory and resulting in wasteful and disappointing final results.

- An efficient and systematic study guide for passing the exam
Most test prep books do not reflect recent trends and instead cover all the types of questions that have appeared in the past, leaving a lot to study.
This textbook boldly discards past exam questions and focuses solely on current exam questions, easing your burden and helping you pass the exam with ease.

- From basic concepts to detailed technology of environmental engineering
Written by a current professional instructor, this book covers the basic concepts of environmental engineering (basic engineering calculations, stoichiometry, engineering terminology, etc.) in detail so that even non-majors or beginners can understand them easily and quickly, and the complete understanding of each unit is enhanced through solutions to practice problems for each sub-unit.

- Reflecting the latest revised exam criteria and fair examination criteria
This is a revised exam book based on the latest exam criteria that will be applied from 2026, and has significantly reduced the amount of study and memorization required by examinees who feel unfamiliar with the fair exam criteria regardless of whether they are majoring or not, thereby eradicating the risk of failing.

- Practical CBT exam questions and explanations, past year's exam questions and explanations
We have carefully selected the latest actual questions from past CBT exams and provided detailed explanations for difficult questions to enhance learners' ability to adapt to written exams.

* 12 sets of past questions and explanations for the Air Quality Engineer CBT and the past 3 years
* 6 sets of past questions and explanations for the Air Quality Industry Engineer CBT and previous year's 2020 exam questions and explanations

- Author-direct video lecture service in operation

We are currently providing direct lectures by the author of the atmospheric environment (industry) engineer course through "Mulsam.com," a specialized video lecture site for environmental certifications.
The video lectures for the written and practical exams for the Atmospheric Environment Engineer and Industrial Engineer, which utilize this book as a study guide, will greatly enhance the learning experience of test takers.

- A smooth community between teacher Choi Hyuk-jae and test takers
While existing test-taking book authors neglect communication with their readers, this author runs a specialized community for water quality/atmospheric environment (industrial) engineers and has always been with test-takers.
If you search for "Mul-Teacher" on a portal site, you can receive close mentoring from the author through cafes and online video lecture sites.

[Naver Cafe] Teacher Mul and Teacher Gong's Environmental Certification Classroom https://cafe.naver.com/msenv
Moolssem.com Environment/Safety Online Education Site https://www.moolssem.com