luận văn survey and evaluate the wastewater treatment system of coc hoa plant thai nguyen iron and steel joint stock company

THAI NGUYEN UNIVERSITY UNIVERSITY OF AGRICULTURE AND FORESTRY DUONG THI HA SURVEY AND EVALUATE THE WASTEWATER TREATMENT SYSTEM OF COC HOA PLANT-THAI NGUYEN IRON AND STEEL JOINT STOCK COMPANY BACHELOR THESIS Study Mode : Full-time Major : Environmental Science And Management Faculty : Advanced Education Program Office Batch : 2014 - 2018 Type: On-the-Job Training(OJT) Thai nguyen, September 2018 h Thai Nguyen University of Agriculture and Forestry Degree Program Bachelor of environmental Science and Management Student ID DTN1454290011 Survey and evaluate the wastewater treatment system of Coc Thesis Title hoa plant -Thai Nguyen Iron and Steel Joint Stock Company Supervisors Assoc Prof Dr Phan Dinh Binh Supervisor’s signature Abstract: Coc Hoa Factory is a member of Thai Nguyen Iron and Steel Joint Stock Company, an important chain of iron and steel production line located in the industrial production area of the company The main products of the factory are coke - the main raw material in the iron-steel production cycle But coke production is one of the major environmental pollutants of the entire iron and steel production process Assessment and select the wastewater treatment technology for the production processes being applied nowadays which is a very necessary issue for the plant.This study reviews waste water characterization of iron and steel industry and treatment procedures involved in these industries The production of iron from its ores involves powerful reduction reaction in blast furnaces Cooling waters are inevitably contaminated with products especially ammonia and cyanide Production of coke from coal in coking plants also requires water cooling and the use of water in by-products separation Contamination of waste streams includes gasification products such as benzene, i h naphthalene, anthracene, cyanide, ammonia phenols, cresols together with an array of more complex organic compounds known collectively as Poly Aromatic Hydrocarbons (PAH) Keywords Wastewater treatment system, cochoa plant, coke production Number of papers 56 Date of submission 15/09/2018 ii h ACKNOWLEDGEMENT This thesis has been greatly conducted from the support as well as assistance of many people whom I would sincerely like to give deep thanks and acknowledgements here To achieve results like today, I would like to express sincere gratitude to School Leadership and teachers at Training and Development International Center - Thai Nguyen University of Agriculture and Forestry imparted for me the knowledge as well as facilitating learning and help me during the learning process in schools In particular we would like to express deep gratitude to Assoc Prof Phan Dinh Binh - who has oriented research, guidance, help and create the best conditions for me to complete this research I would like to sincerely thanks Dr Dao Dai Duong - Head of technical technology and the uncle, aunt, brother, sister officer of Coc Hoa plant - Thai Nguyen Iron and Steel Joint Stock Company for providing me very useful documents and knowledge about wastewater treatment system of plant, wholeheartedly induct guide and help me throughout the process internship I would like to sincerely thank ! Thai Nguyen, September 2018 iii h luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company TABLE OF CONTENT ACKNOWLEDGEMENT iii TABLE OF CONTENT iv LIST OF FIGURES vi LIST OF TABLES vii CHAPER I INTRODUCTION 1.1.Rationale 1.2 Specific Objectives 1.3 Contents of work 1.4 Profile of the cooperating agency .3 1.5 Activities Error! Bookmark not defined 1.6.Timeline .5 CHAPTER II LITERATURE REVIEW 2.1 The basics of the environment 2.2 Legal bases .11 2.2.1 Rationale Error! Bookmark not defined 2.2.2 Coached Error! Bookmark not defined 2.3.Situation of water pollution .12 2.3.1 Status of water pollution in the world 12 2.3.2.Situation of water pollution in Vietnam .14 2.3.3.Situation of water pollution in Thai Nguyen province 15 2.3.4.Situation of coke production environment in the world and Vietnam 15 luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company h iv luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company CHAPTER III STATUS OF THE CONSIDERED ISSUE AT THE TRAINING AGENCY……………………………………… 18 3.1 Overview of factory .18 3.1.1.General introduction .18 3.1.2 Personnel diagram of Coc hoa Factory thai nguyen .19 3.1.3 Production capacity of the plant: 19 3.1.4 Process technology of the plant 20 3.2 Satus of water environment – Wastewater treatment technology of plant .22 3.2.1 Satus of water environment 22 3.2.2.Wastewater treatment measures 24 3.3 Evaluation of wastewater treatment of Coc hoa Factory .29 3.3.1 Some methods sampling and Determination factor in steel industry 29 3.3.2 Methodology……………………………………………………………… ….31 3.3.3 Results 31 CHAPTER IV DISCUSSION AND LESSON LEARNDED 34 4.1.Discussion 34 4.1.1.Restriction when operating the wastewater treatment system 35 4.1.2 Solutions to problems occurring during the operation of the system .37 4.1.3 Suggested measures to minimize pollution to the plant 37 4.2 Lesson .38 CHAPTER V CONCLUSION .40 REFERENCES 41 luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company h v luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company LIST OF FIGURES Figure : Map about water reserves in the world.( Internet ) .12 Figure 2: Personnel diagram of CocHoa factory Thai Nguyen……………………….19 Figure 3:Diagram of production technology of coke factory (Soure: Coc Hoa factory's environment report, 2017) 20 Figure 4:Diagram of wastewater treatment technology.(Soure: Coc Hoa factory's environment report, 2017) 26 Figure 5: The pH in wastewater before and after treatment is compared with QCVN 32 Figure 6: The BOD and COD concentration in wastewater before and after treatment is compared with QCVN 33 Figure 7:The phenol concentration in wastewater before and after treatment is compared with QCVN 33 Figure 8:The concentration of TSS in wastewater before and after treatment is compared with QCVN 34 luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company h vi luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company LIST OF TABLES Table 1: C values of pollution factors in wastewater from steel industry, which are the basis for calculating maximum permissible value .9 Table 2: Methods for sampling and determination of factors in wastewater from steel industry .29 Table 3: Analysis results of wastewater after the process of wastewater treatment 31 luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company h vii luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company CHAPER I INTRODUCTION 1.1.Rationale In recent years, the global environment has changed in a negative way, seriously affecting the socio-economic development of the country, causing ecological imbalance on the earth Sustainable development is therefore of particular concern in many countries and organizations around the world Environmental protection has become a global issue According to the United Nations (UNEP), the world's air pollution and water pollution is constantly increasing, environmental protection is a national policy and is becoming an important issue, in the socio-economic development strategy Nearly 80 countries, accounting for 40% of the world's population, have been in serious water shortages since the mid-1990s About 1.1 billion people not have safe water Our country is in the process of speeding up the process of industrialization modernization with increasing speed Export-processing zones shall be newly built and expanded to develop economic development (Citation from:’’ The United Nations World Water Development Report 2015’’.) In the industries, iron and steel metallurgy industry is an important economic sector of our country, supplying raw materials for the country's construction, bridges of roads are increasingly expanded and enhanced In large part thanks to the steel industry day Besides the strong development contributing greatly to the economic development but causing a considerable impact on the environment luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company h luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company Especially the water environment is increasingly seriously polluted from the sewage of the steel plant bad influence on the environment in general and the water environment in particular In Vietnam, the lack of uniformity in management together with the rapid development of steel plants, metallurgy which have had negative impacts on the environment in the local and will need fees great for many years to deal with the consequences Thai Nguyen Iron and Steel Joint Stock Company was established in 1959 and underwent 50 years of construction and development So far, the company's steel production is increasing and the scale of its production has been expanded and growing after being equitized on July 1, 2009 In parallel with that development, industrial production of the Company also polluted the environment, negatively affecting the surrounding environment, affecting the community The environmental pollution caused by sewage is at an alarming rate From the urgent requirements set forth in environmental protection Thai Nguyen Iron and Steel Factory has applied many measures to minimize and limit pollution in general and water pollution in particular In order to assess the wastewater treatments systems for finding the best model which can applied at the plant I conducted the research:“Survey and evaluate the wastewater treatment system of Coc hoa plant -Thai Nguyen Iron and Steel Joint Stock Company’’ luan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.companyluan.van.survey.and.evaluate.the.wastewater.treatment.system.of.coc.hoa.plant.thai.nguyen.iron.and.steel.joint.stock.company h