Assessment of current environmental quality at cao bang cement factory in duyet trung commune, cao bang city, cao bang province

THAI NGUYEN UNIVERSITY
THAI NGUYEN UNIVERSITY OF AGRICULTURE AND FORESTRY
---------------------------------------------------

NGUYEN THI TRANG

Topic title:
“ASSESSMENT OF CURRENT ENVIRONMENTAL QUALITY
AT CAO BANG CEMENT FACTORY IN DUYET TRUNG COMMUNE,
CAO BANG CITY, CAO BANG PROVINCE”

BACHELOR THESIS

Mode of study : Full-time
Major

: Environmental Science and Management

Faculty

: International Training and Development Center

Batch

: 2010 - 2015

Thai Nguyen, 2015


2

THAI NGUYEN UNIVERSITY
THAI NGUYEN UNIVERSITY OF AGRICULTURE AND FORESTRY
---------------------------------------------------

NGUYEN THI TRANG

Topic title:
“ASSESSMENT OF CURRENT ENVIRONMENTAL QUALITY
AT CAO BANG CEMENT FACTORY IN DUYET TRUNG COMMUNE,
CAO BANG CITY, CAO BANG PROVINCE”

BACHELOR THESIS

Mode of study

: Full-time

Major

: Environmental Science and Management

Faculty

: International Training and Development Center

Class

: K42 AEP

Year

: 2010 – 2015

Supervisor

: Assoc.Prof. DO THI LAN

Thai Nguyen, 2015


3

Thai Nguyen University of Agriculture and Forestry
Degree program

Bachelor of Science in Environmental Science and
Management

Student name

Nguyen Thi Trang

Student ID

DTN1054120166
Assessment of current environmental quality at Cao Bang

Thesis title

Cement Factory in Duyet Trung commune, Cao Bang city,

Cao Bang province

Supervisor

Assoc.Prof. Do Thi Lan

Abstract
In recent years, environmental pollution is becoming worse. Environmental
protection is essential, especially for industrial areas. Cao Bang Cement Factory is
in Duyet Trung commune, Cao Bang province where the environment is being
polluted. Therefore, we have studied the establishment of “Assessment of current
environmental quality at Cao Bang Cement Factory in Duyet Trung commune, Cao
Bang city, Cao Bang province ". The aim of the study is to assess the current
sources of environmental pollution in Cao Bang cement factory and having
measures to protect the environment as well. Therefore, that citizen can study and
work in a safe and clean environment. In addition, this enables students to enhance
their knowledge, awareness, and responsibility for the environment. We conducted
to collect documents, take samples to analyze the environmental quality. Analyzing
criteria of environment in Cao Bang factory, we considered it as the basis of
evaluating the current state of the environment The results of analyzing air sampled
showed that all the targets are within the permissible limits except the noise in
cement works is quite high (86.1 dBA) exceeds 1.1 dBA. Moreover, analysis of
wastewater sampled in the factory in comparisons with QCVN 40:2011/BTNMT
(National technical regulation on industrial waste water) showed that pollutants in
waste water that are much smaller than the regulation allows. However, index


4
numbers are still quite high such as the percentage of Mn is 0.641 mg/l while
allowed standard is 1 mg/l. From results above, we can see that the environmental

quality is severely polluted, so we have increased the effective solutions to
minimize negative impacts on the environment, especially air environment.
Simultaneously, there are best solutions to minimize effects to local people as well
as workers.
Keywords

Environmental

quality,

Environmental

pollution,

Environmental protection, Citizen, Awareness, Assessment

Number of pages

pages

Date of submission

January 15, 2015



I

ACKNOWLEGDEMENT

Firstly, I would like to say thanks to Assoc.Prof. Do Thi Lan, my research
supervisors, enthusiastic encouragement and useful critiques of this research work. It
has contributed immensely to the evolution of my ideas to complete my project on
schedule.
Secondly, I would also like to extend my thanks to the technicians of Cao Bang
Environmental Protection Agency who help in offering me the resources related to
project.
Finally, I wish to thank my family for their support and encouragement
throughout my study. A special thanks to all those other persons who helped me in
completing this report. During the process of completing project, mistake is inevitable.
Thanks so much!


II

TABLE OF CONTENTS

PART I: INTRODUCTION .........................................................................................1
1.1. Background and rationale.....................................................................................1
1.2. Objectives of study ...............................................................................................2
1.2.1. To assess the current environment ................................................................2
1.2.2. To analize the sites which are exited and limited in manegement of
environmental quality..............................................................................................2
1.2.3. To propose the solutions in environmental protection. .................................2
1.3. Significations of the study ....................................................................................3
1.3.2. Practical significance.....................................................................................3
PART II: LITERATURE REVIEW............................................................................5
2.1. Scientific basis of topics .......................................................................................5
2.1.1. Theoretical basis ............................................................................................5
2.1.2. Scientific basis...............................................................................................7

2.2. Factual basis .........................................................................................................9
2.2.1. Status of research on the quality of air in the world......................................9
2.2.2. Status of research on the quality of air in Vietnam .....................................10
2.2.3. Current environment in Cao Bang province................................................11
2.2.4. Overall assessment overview ......................................................................12
PART III: METHODOLOGY ...................................................................................13
3.1. Subjects and study area ......................................................................................13
3.1.1. Research subject ..........................................................................................13
3.1.2. Scope of study .............................................................................................13
3.2. Location and time ...............................................................................................13
3.3. Contents ..............................................................................................................13


III
3.4. Research Methodologies ....................................................................................13
3.4.1. Methods of collecting secondary data ........................................................13
3.4.2. Methods of sampling and laboratory analysis.............................................14
3.4.3. Methods of data processing .........................................................................15
3.4.4. Integrated approach, comparing ..................................................................15
PART IV: RESULTS ..................................................................................................16
4.1. General information about Cao Bang Cement ...................................................16
4.1.1. Natural Conditions.......................................................................................16
4.2. Basic information about factory .........................................................................19
4.2.1. The information about operation .................................................................19
4.2.2. Overview of scale, performance, and activities related to environment. ....20
4.3. Current environment at Cao Bang Cement ........................................................25
4.3.1. Air environment...........................................................................................28
4.3.2. Water environment ......................................................................................30
4.3.3. Solid waste...................................................................................................33
4.4. Environmental protection of the cement factory in Cao Bang...........................34

4.4.2. Exited measures in environmental protection in the operation of plan.......44
4.5. Proposed solutions to reduce environmental pollution for Cao Bang Cement
factory........................................................................................................................44
4.5.1. Management Solutions ................................................................................44
4.5.2. Technical Solutions .....................................................................................46
4.5.3. Propaganda and education solutions. ..........................................................47
PART V: CONCLUSION AND PETITION.............................................................48
5.1. Conclusion ..........................................................................................................48
BIBLIOGRAPHY .............................................................Error! Bookmark not defined.


IV

LIST OF TABLES
Table 3.1: Locations where monitor air quality at Cao Bang Cement Factory..............14
Table 4.1. Gaseous components .....................................................................................26
Table 4.2. Identify sources of negative impacts on the environment and subjected
to impact in the production phase ................................................................27
Table 4.3. the monitoring result of air environment in factory’s area ...........................28
Table 4.4. The monitoring result of air environment surrounding factory’s area ..........29
Table 4.5. The analysized result of wastewater of factory.............................................31
Table 4.6. The analysized result of water quality of the factory ....................................32
Table 4.7. The components of solid waste from living activities...................................33


V

LIST OF FIGURES
Figure 4.1. Geographic location of Cao Bang Cement Factory ...................................16
Figure 4.2. Raw grinding system KMP 60-5................................................................37

Figure 4.3. Precipitator’s system JLMC 82-9 ..............................................................40


1

PART I. INTRODUCTION
1.1. Background and rationale
Nowadays, the environment is the top concern of all countries and the
international community. Along with the development of society, the environment is
being polluted by the devastation and development of human, especially the problem
of air pollution. Humanity has polluted the atmosphere severely, causing a negative
impact to the people, to the ecosystem as well as the lives of other creatures.
In recent years, economy is growing faster bring about sources of
environmental pollutants. Vietnam is a developing country but there are no measures
to protect the environment properly, thus causing great pressure on the environment.
Pollution in major industrial parks, factories and big cities is becoming increasingly
serious, having negative impact to the landscape and human health. Therefore,
environmental protection is a top priority of the Party and State which are interested in
strategic socio-economic development in the period of industrialization and
modernization of the country.
Cao Bang province is raising economy with the decreasing proportion of
agriculture, increasing proportion of industry, construction, trade and services, the rate
of urban development as well as industrialization are taking place very quickly.
Cao Bang is one of the provinces where economic growth is high with many
areas such as metallurgical industry, Ferromanganese production, and cement
production, mining ... These activities have adverse effect to environmental quality in
Cao Bang.


2

Cao Bang Cement factory has operated for a long time (1997) with outdated
the equipment and operating facilities. Although the operation of the plant are
bringing socioeconomic benefits, the negative impact on the environment is still
not inevitable. Therefore, the review of the status of ambient air quality in Cao
Bang Province is very interesting.
Stemming from these problems and realizing the importance of the evaluation of
the current environmental quality with the adoption by consensus of the managing board
of the University, the board of directors of International Development and Training
Centers - Thai Nguyen University of Agriculture and Forestry, along with the direct
guidance of Asso Prof. Do Thi Lan, I conduct research project “Assessment of Current
Environmental Quality at Cao Bang Cement Factory in Duyet Trung Commune, Cao
Bang City, Cao Bang Province” to support the management of environmental protection
of Government in Cao Bang city, which proposed some measures in protecting and
improving the environment towards the sustainable development.
1.2. Research’s objectives
1.2.1. To assess the current environment
1.2.2. To analize the sites which are exited and limited in manegement of
environmental quality
1.2.3. To propose the solutions in environmental protection.
1.3. Research questions
- What is an overview of Cao Bang Factory?
- What is current situation of air and water environment in Cao Bang Cement
Factory?
- What can human do to reduce impacts on human and environment?


3
1.4. Significations of the study
1.4.1. Learning and scientific research significance
- To apply the knowledge in to practice

- To enhance the knowledge in real life
- To supplement experiences in work after the graduation
1.4.2. Practical significance
- To assess the impacts of Cao Bang Cement Factory on ambient environment.
- To evaluate the efficiency of waste treatment system.
- To suggest the solutions to manage, to reduce and to treat environmental
pollutions.
1.5. Limitations
- Due to limitation of time and resources, this study mainly foucues on the air
and water environment in Cao Bang Cement Factory
- The measurement and sampling time is only done 2 times/ year. So, the
samples cannot in reflect the entire of pollution
- The study solely mentions to the wastewater and air of Cao Bang Cement
Factory in short term of early 6 months in 2014
1.6. Definitions
This study assesses the status of wastewater and air environment of Cao Bang
Cement Factory on early 6 months in 2014 peroids in order to determine the impact of
wastewater and emission to the environment. Therefore, a number of solutions are
propose to mitigate the effects to the environment surrounding the factory.


4


5

PART II. LITERATURE REVIEW
2.1. Scientific basis of topics
2.1.1. Theoretical basis
2.1.1.1. The definition of environment

Environmental management is an activity in the field of social management, with
adjustable impact of human activities based on a systematic approach with information
coordination skills for environmental issues related to humans, derived from the
quantitative point of view towards sustainable development and rational use of natural
resources (Nguyen Ngoc Nong et al, 2006) [11].
Governmental management in environmental protection is a specific content in
governmental management. It is the use of management tools based on science,
economics, law to organize actions to ensure a balance between economic
development - social, and environmental protection, including synthesis of legal
measures, policy, technical, social appropriate to protect the environmental quality of
life and economic sustainable development of the national society (Environmental
Science General Le Van Khoa, 2001 ) [9].
- Environment definition
In section 1 of Article 3- Environmental Protection Law on November 29, 2005
states: "Environmental factors including natural and man-made material surrounding
human life affecting production, the survival, and development of human beings and
other creatures "[7].
- Environmental components:


6
Environmental components are the physical elements that constitute the
environment such as soil, water, air, sound, light, organisms, ecosystems and other
physical forms.
- Environmental function
Environment is the living space of humans and other creatures.
Environment provides the necessary resources for life and human production
activities.
Environment is a place containing the human waste generated by life and its
manufacturing operations.

Environment mitigates the adverse effects of natural and human-beings on earth.
Environment storages and provides information to human.
- The concept of environmental protection:
Environmental protection activities are to keep the environment healthy and
clean; prevent and limit adverse impacts on the environment and respond to
environmental incidents; pollution and degradation, restore and improve the
environment; extract, use and save natural resources properly; protect biodiversity.
2.1.1.2. The concept of environmental pollution
- According to the World Health Organization: "Environmental pollution is the
transfer of energy or waste to environment which likely causes harming to human
health, development or degrading organisms or reducing environmental quality ".
- According to section 6 of Article 3- Environmental Protection Law in 2005:
"Environmental pollution is the transformation of the components of the
environment, which are not consistent with environmental standards, adversely
affecting human beings." [7]


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+ Air pollution: "Air pollution is the presence of a foreign substance or an
significant change in the composition of the air making the air not clean or causing
unpleasant smell , reducing visibility (due to dust).
+ Water pollution: "Water pollution is a negative change in the term of the
physical - chemistry - biology properties of water, with the presence of foreign
substances in liquid, solid leading water become toxic to humans and animals. "
+ Soil pollution: "Soil pollution is a result of human activities altering the
ecological factors beyond the ecological limits of the living communities in the soil."
+ Noise pollution: "Noise is a combination of pitched sounds of different
frequencies, orderly arrangement, causing uncomfortable feeling to the listener, affect
the process of working, resting people. In another way, it is the sound of untimely,
improper loosening, audible magnitude too large to overcome tolerance to humans.

(According to water environmental protection laws, 1993).
2.1.2. Scientific basis
2.1.2.1. Legal documents
- Environmental Protection Act 2005 by the National Assembly of the Socialist
Republic of Vietnam XI 8th session on 29/11/2005 authorized at 01/07/2006.
- Directive 36 CT / TW in strengthening environmental protection during the
period of industrialization and modernization of the country.
- Decree No. 21/2008/ND-CP dated 28 May 02, 2008, on the change and
adjustment of some articles of Decree No. 80/2006 dated 09 May 08, 2006 of the
Government on detailed regulations and guiding a number of articles of Environmental
Protection Law.


8
- Decree No. 117/2009 / ND-CP on handling of administrative violations in the
field of environmental protection. Decree takes effect from the date of 01/03/2010.
- Water resource No. 17/2012/QH13 by the National Assembly of the Socialist
Republic of Vietnam in 21/06/2012
- Decree No. 29/2011/ND-CP on strategic environmental assessment,
environmental impact assessment, and environmental protection engagement in 28
28/04/2011.
- Decree No. 59/2007 / ND-CP of the Government dated 09/04/2007 regarding
solid waste management. .
- Decision No. 12/2011 / TT-BTNMT dated 14/04/2011 by the Ministry of
Natural Resources and Environment on harmful waste management.
2.1.2.2. National Standard
- QCVN 40:2011/BTNMT: National technical regulation on industrial waste water.
- QCVN 08:2008/BTNMT: National Technical Regulation on surface water
- QCVN 26: 2010 / BTNMT: National Technical Regulation on noise at the time
from 6 hours to 21 hours (according to the equivalent sound level)

- Decision No. 22/2006 / Director-BTNMT 18/12/2006 by the Ministry of
Natural Resources and Environment compulsory environmental Standard.
- QCVN 05:2013/BTNMT: National technical regulation on ambient air quality
1-hour average .
- QCVN 06:2009/BTNMT: National Technical Regulation on hazardous
substances in ambient air for 1 hour


9
- QCVN 26:2010/BTNMT: National Technical Regulation on noise, the time
from 6 hours to 21 hours (according to the equivalent sound level)...
- TCVN 7365:2003: National Technical Regulation on ambient air quality – The
limitation of concentration of dust and air pollutants in cement zone.
2.2. Factual basis
2.2.1. Status of research on the quality of air in the world.
Air pollution continues to receive a great deal of interest worldwide due to its
negative impacts on human health and welfare. Several studies reported significant
correlations between air pollution and certain diseases including shortness of breath,
sore throat, chest pain, nausea, asthma, bronchitis and lung cancer (Dockery and Pope,
1994; U.S. EPA 1999a, U.S. EPA 1999b; Jeff and Hans 2004; Clean Air 2007). The
World Health Organization state that 2.4 million people die each year from causes
directly attractable to air pollution (World Health Organization 2007). In addition to its
negative health impacts, air pollution is known to cause injuries to animals, forests and
vegetation, and aquatic ecosystem. Its impacts on metals, structures, leather, rubber,
and fabrics include cracks, soiling, deterioration, and erosion (Boul et al., 1994).
Cement industry is a potential anthropogenic source of air pollution. It is a major
contributor to dust, nitrogen oxides (NOx), sulfur oxides (SOx), an carbon monoxide
(CO) in metropolitan areas. Furthermore, it contributes about 5% of the global CO2,
the famous greenhouse gas (Ian and David, 2002). In cement industries, dust is emitted
from stock piles, quarrying, transportation of raw materials, kilns operation, clinker

cooling and milling (European Integrated Pollution Prevention and Control Bureau
2001).


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In Jordan, new cement plants are being constructed in Badia (a region that
receives less than 150 mm of rain annually). However, only few studies were
conducted to assess the air quality in the country. The Royal Scientific Association
have monitored PM10 and PM2.5 in Alhashemeiah, a town where most of Jordan
industries are concentrated during the interval March, 2000 through February 2001
(Asi et al., 2001). The results showed that PM10 and PM2.5 have exceeded the
Jordanian 24 hour standard of 120 µg/m3 during 20 days out of 50 days constitute the
whole sampling period. Hussein et al.(2010) measured the submicron particle number
concentrations un the urban/suburban atmosphere of Amman-Jordan during the spring
of 2009 and found that during the morning rush hours the number concentrations were
as high as 120 x 103 and 75 x 103 at the urban and suburban sites during weekly
workdays.
Special attention has to be paid to any proposed activities in arid regions in order
to minimize the environmental consequences of dust accumulated on shrubs and herbs,
which may lead to their death, and thereby destroy the fragile ecosystem there in.
2.2.2. Status of research on the quality of air in Vietnam
Vietnam has about 90 cement companies, of which approximately 30
members of total Vietnam Cement Corporation, 5 joint venture and more than 50
small companies. Environmental pollution caused by cement plants is causing a
problem is the public best interest. In recently, December 2012, Dai Viet – Dung
Quat Cement Factory located in central Binh Dong Commune, Binh Son District,
Quang Ngai Province had to suspend operations due to environmental pollutants
serious impact on the lives of the people's health. ( />Hoa Binh Cement Factory project (now is the Vinh Son cement plant) which
is belong to Trung Son Cement limited Company, is builted in Trung Son
commune, Thanh Lap commune (Luong Son) from 2008 to 2010. Report on

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environmental impact assessment of the project is the provincial people's
Committee approved Decision No. 1390 / QD-UBND in 27/06/2008 ... However, in
the course of activity, factory has discharged environmental pollution prolonged
pressing of the population in the area.
Discharged from the sewage through electrostatic precipitator system is one of
the causes of Vinh Son cement plant caused environmental pollution in Trung Son
commune, Thanh Lap commune (Luong Son). ( />According to the results of regular monitoring of agency of the environmental
Protection in Ho Chi Minh City on the air pollution of the city, 98% of samples testing
do not follow the standards, always at highly hazardous to human health, including the
amount of dust generated from smoke, dust is causing serious air pollution in the area.
The main reason is because emissions from vehicle traffic regularly.
Manufacturing operations of industrial plants located in the suburban area or
located in the inner city such as the Tan Binh Industrial Zone, Ha Tien cement factory,
... and a lot of establishments producing industrial and handicraft industry is also the
leading cause of air pollution. ( />2.2.3. Current environment in Cao Bang province
In general, the atmosphere are now relatively clean, air pollution concentrated
locally at some points, such as metallurgical plant, the construction sector, a number of
handicraft production industrial and crowded intersections passing vehicles. The point
has exceeded the target pollution regulation is not concentrated but dispersed scattered
in the province. Environmental air quality is now declining trend worsens.
According to the observation results from 2006 to 2010, the concentration of
pollutants in the air at the center of the districts, the most densely populated areas are
under Vietnam’s Regulation, suspended dust is increasing, especially in the gas


12
stations along the route under construction. Dust concentration tends to decrease at the

end of 2009, and increased again around the average value in 2010.
Generally, SO2 concentrations in the province is much lower than normative.
SO2 arising mainly caused from the transport, some plants which generate SO2
emissions, have been scattered but not concentrated.
The monitoring results showed that the concentration of SO2 in the atmosphere
around the province are lower than Standard in Vietnam. The concentration of SO2 at
the center of the districts is not much volatility. The concentration of SO2 in the city
has tended to increase in two years.
Through evaluation report on environmental impact of Cao Bang province in 2010,
forecasting air pollution by 2020 the province of Cao Bang will depend largely on the
scope and scale of development zones industrial, urban and transport. During the
construction phase of the infrastructure of industrial zones, residential zones, border
economic zones, roads ... atmosphere will be quite heavy pollution by dust and noise.
2.2.4. Overall assessment overview
Through science, theoretical, and practical basis of research’s results on
environmental quality in the world and Vietnam. The implementation of the project:
“Assessment of current environmental quality at Cao Bang Cement Factory in
Duyet Trung Commune, Cao Bang City, Cao Bang Province” is a necessity for both
living species and environment.


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PART III. METHODOLOGY
3.1. Subjects and study area
3.1.1. Research subject
The quality of air, water and soil at the Cao Bang Cement Factory in Duyet
Trung commune, Cao Bang city, Cao Bang province
3.1.2. Scope of study
At the Cao Bang Cement Factory in Duyet Trung commune, Cao Bang city, Cao

Bang province
3.2. Location and time
- Location of study: At the Cao Bang Cement Factory in Duyet Trung
commune, Cao Bang city, Cao Bang province
- Duration of conduct: From Sep, 2014 to Dec, 2014.
3.3. Contents
- Natural and social conditions in Duyet Trung commune, Cao Bang city, Cao
Bang province.
- Current ambient environment in Duyet Trung commune, Cao Bang city, Cao
Bang province.
- Current state of environmental protection and analyzing the limitation of factory.
- To put forward a great many ideas to improve the environment.
3.4. Research Methodologies
3.4.1. Methods of collecting secondary data
- To collect the documentation and data on natural conditions, socio-economic
conditions in local.


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- To collect the documentation and data on environmental monitoring of factory
at Agency of Environmental Protection
- Regulation documents in environmental management
- Environmental Standard in Vietnam
- Process of producing
3.4.2. Methods of sampling and laboratory analysis
We are taken 6 samples to analyze and evaluate the environmental quality: 2
samples of water, and 4 samples of air.
The date: 25/04/2014
Table 3.1: Locations where monitor air quality at Cao Bang Cement Factory
Symbology of samples

Location

Coordinate (X; Y)

NMCS-33-01

Water provided to
production

(2503274 , 0555578)

NTCS-33-01

Waste water

(2503430 , 0555550)

12A1/CS/2014-43

At the area crushes Clinker

(2503299 , 0555624)

12B1/CS/2014-44

At the cement plant

(2503231 , 0555707)

12C1/CS/2014-44

At the residential quarters
where are in front of
factory, along with
Highways 4

(2503316 , 0555588)

12D1/CS/2014-45

At the sidewalk of
Highways 4 far from 300m

(2503316 , 0555588)

Methods of sampling, sample preservation, measurement and analysis are
performed by center of environmental analysis and monitoring - Environmental
Protection Agency comply with the ISO, NTR in the environmental analysis
equipment dedicated.


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The ISO, NTR in the environmental analysis including:
- QCVN 040:2011/BTNMT: National technical regulation on industrial waste water.
- QCVN 08:2008/BTNMT: National Technical Regulation on surface water
- QCVN 26: 2010 / BTNMT: National Technical Regulation on noise at the time
from 6 hours to 21 hours (according to the equivalent sound level)
- Decision No. 22/2006 / Director-BTNMT 18/12/2006 by the Ministry of
Natural Resources and Environment compulsory environmental ISO.

- QCVN 05:2013/BTNMT: National technical regulation on ambient air quality
1-hour average
- QCVN 06:2009/BTNMT: National Technical Regulation on hazardous
substances in ambient air for 1 hour
- QCVN 26:2010/BTNMT: National Technical Regulation on noise, the time
from 6 hours to 21 hours (according to the equivalent sound level)...
- TCVN 7365:2003: National Technical Regulation on Air in the workplace limit of Concentration of dust and air pollutant for cement plant
3.4.3. Methods of data processing
- Collecting and interpreting data of hydrometeorology, socioeconomic and
environment in area.
3.4.4. Integrated approach, comparing
Synthesis of data collected, compared to the Viet Nam Technical Regulation and
Viet

Nam

Standards

TCVN

7365:2003,

QCVN

05:2013/BTNMT,

QCVN

06:2009/BTNMT, QCVN 26:2010/BTNMT, QCVN 40:2011/BTNMT, QCVN
08:2008/BTNMT. Then concluding the environmental quality surrounding area of

factory for suggests the solutions in environmental protection.