THAI NGUYEN UNIVERITY UNIVERSITY OF AGRICULTURE AND FORESTRY LE THI THU THAO ASSESSING THE PERFORMANCE OF WASTEWATER TREATMENT IN LUYEN THEP FACTORY-THAI NGUYEN IRON AND STEEL JOIN SOCK CORPORATION BACHELOR THESIS Study Mode: Full-time Major: Environmental Science and Management Faculty: International Training and Development Center Batch: 2011-2015 Thai Nguyen September, 2015 Thai Nguyen University of Agriculture and Forestry Degree Program: Bachelor of Environmental Science and Management Student name: Le Thi Thu Thao Student ID: DTN 1153110147 Assessing performance the wastewater treatment in Luyen Thesis Title: Thep factory-Thai Nguyen Iron and Steel Join Sock Corporation Supervisor: Assoc Prof - Dr Do Thi Lan Abstract: The environment is where people live and work So, the environment has been a serious problem of society It is not only a problem of a country but also is a global problem It requires that we must take action to protect the environment One of the most of the sources of pollution influence on the environment is that waste-water including domestic waste-water and industrial waste-water Currently, the development of science and technology have helped human achieve the great achievements in the fields of social life Besides, speed socioeconomic development increasingly more advanced Industrialized socialization entails not only economic growth but also the causes of increasing amounts of waste increase In addition, the amount of municipal waste, waste from agricultural by production generated in large quantities when the harvest season All this trash had the common characteristic is that it was unclassified In Vietnam, every day, big cities and urban areas in the country have over 9100m3 of waste discharged including the amount of municipal waste more than i 75.4%, the rate of collection is only about 40%-50% and it is pre-treated The collection and treatment of solid waste is not thorough causing negative impact on the environment: stinks, pollution of surface water, underground water, soil pollution, pathogens and the spread of disease Industrial Thai Nguyen Iron and Steel were the main supplier for market about raw materials in steel industry Besides, the steelmaking process also releases large amount of waste causing environmental pollution So, through the process “Assessing the performance of waste-water treatment in Luyen Thep factory-Thai Nguyen Iron and Steel Join Sock Corporation” From there, we can give some solution appropriate to deal with minimize the environmental pollution problem in factory Key words Performance treatment, rain-water overflowing, domestic waste-water, industrial waste-water, processes treatment Number of pages 54 pages Date of submission 30/9/2015 ii ACKNOWLEDGMENTS Practice is the participatory process to learn, observe, study and manipulate application of knowledge learned into practice the work of environmental management of the factory Internship report is an opportunity for students to present on issues of their interest in the course of practice, as well as an important document to help teachers examine and evaluate the learning process and results practice of each student To complete this internship report during practice at Luyen Thep Luu Xa factory-Thai Nguyen Iron and Steel Join Sock Corporation I wish to express my thanks to: - Associate Professor - Dr Do Thi Lan lecturer of Environmental Science - Nong Lam University direct teacher's guide me in this internship She instructed during practice and build reports - Ms Nguyen Van Bao - Manager, working at Department of Engineering Technology and Luyen Thep Luu Xa factory - Thai Nguyen Iron and Steel Join Sock Corporation and everyone in factory interested, helped and facilitated They enabling for me exposed to environmental work of factory during the practice, and helped me in the process of implementing the report I sincerely thank you!!! Student Le Thi Thu Thao iii TABLE OF CONTENTS ACKNOWLEDGMENTS iii TABLE OF CONTENTS iv LIST OF TABLES LIST OF FIGURES LIST OF ABBREVIATIONS PART I: INTRODUCTION 1.1 Research rationable 1.2 Research’s objectives 1.2.1 Request of topic 1.3 Research question and hypotheses 1.4 Limitations 1.5 Definitions PART II: LITERATURE OVERVIEW 11 2.1 The legal basis 11 2.2 Practical basis 12 2.3 The research situation of water pollution in the world and Vietnam 13 2.3.1 Research situation of water pollution in the world 13 2.3.2 Research situation of water pollution in Vietnam 15 2.4 Environmental situation of steel production in the world and Vietnam 18 2.4.1 Environmental situation of steel production in the world 18 2.4.2 Environmental situation of steel production in Vietnam 19 PART III: METHODS 21 3.1 The research methodology 21 3.1.1 Methods of data collection, analysis and synthesis of secondary documents 21 3.1.2 Methods of collecting and processing of data and documents 21 3.2.3 Methods sampling and analysis 21 iv 3.4 Monitoring Parameters 22 PART IV: RESULTS AND DISCUSSION 25 4.1 Introduce to Luyen Thep-Luu Xa factory-Thai Nguyen Iron and Steel Join Sock Corporation 25 4.1.1 General information 25 4.1.2 Summary process and status operations of factory 26 4.1.3 The demand of production and activities 27 4.1.4 Production area 28 4.1.5 The apparatus of factory 31 4.2 Natural conditions and environment factory 32 4.2.1 Conditions about geography and geology 32 4.2.2 Conditions about meteorology-hydrology 32 4.3 Status of wastewater in factory 36 4.3 Wastewater treatment technology 40 4.3.1 For domestic wastewater 40 4.3.2 For rain-water overflowing 42 4.3.3 For industrial wastewater 43 4.4 Results of measuring and analyzing of wastewater 45 PART V: DISCUSSION AND CONCLUSION 50 5.1 Discussion 50 5.2 Conclusion 50 REFERENCE 52 APPENDICES 55 v LIST OF TABLES Table 4.1- The average temperature in months of year 33 Table 4.2- Average humidity air in months 34 Table 4.3- The system of flow on the characteristics of surface 37 Table 4.4- Weight and concentration of domestic wastewater 39 Table 4.5- Results of measuring and analyzing industrial wastewater 45 Table 4.6- Results of measuring and analyzing domestic wastewater 48 LIST OF FIGURES Figure 4.1- Geographical location of Luyen Thep-Luu Xa factory………………………… 24 Figure 4.2- Diagram sampling location…………………………………………………… 25 Figure 4.3- The location of diagram contiguous side of Luyen Thep factory……………… 29 Figure 4.4- Diagram of the overall factory premises……………………………………… 30 Figure 4.5- The organization of diagram in factory …………………………… ………… 31 Figure 4.6- Structure of septic tanks………………………………………………… …… 41 Figure 4.7- Diagram treatment systems and electric furnace wastewater ………… …… 43 Figure 4.8- Diagram treatment systems and casting machines wastewater………… 44 Figure 9- Diagram of cooling water cyclic 2nd…………………………………… …… 44 Figure 4.10- The indicator of BOD5 ……………………………………… 47 Figure 4.11- The indicator of COD 47 Figure 4.12- The indicator of TSS 48 LIST OF ABBREVIATIONS MONRE: Ministry of Natural Resources and Environment LEP: Law on Environmental Protection EIA: Environmental Impact Assessment TVA: Tennessee Valley Authority SIWI: International Water Institute FAO: Food and Agriculture Organization UNICEF: United Nations Educational Scientific and Cultural Organization BOD: Biochemical Oxygen Demand COD: Chemical Oxygen Demand TSS: Total Suspended Solids PART I: INTRODUCTION 1.1 Research rationable Currently, waste-water treatment is hotly issue and emerge in Vietnam According to the forecast of world economic organizations, Vietnam will be one of the countries had speed of economic rapid development in the world and it is forecast to be 7% in the next decade However, the economic growth quickly and strongly will also create pressure challenge impact to come environment After over 30 years of implementing the process of industrialization and modernization, Vietnam has industrial zones, export processing zones and high-tech zones in 57/64 provinces, attracting tens of thousands of construction projects plant with all sorts of career Besides, producing a large volume of products to serve the domestic demand and exports, industrial establishments also consumes a huge amount of natural resources and energy, and emissions into the environment the corresponding amounts of waste (liquid, gas, solid and sludge) Inside, waste-water is often issue most concerned because it often has heavy traffic, pollution concentrations highly and contaminated components difficult to handle Iron and Steel Industrial Zone - Thai Nguyen is the important industrial area in the Northern of province The waste-water treatment here is an important step, which affects directly or indirectly the lives of neighboring residential areas, ecosystems and biodiversity The performance evaluation of waste-water treatment at the plant of industrial Gang Thep - Thai Nguyen helps us have a look overall level of impact on the environment, propose some management measures, waste-water treatment to be better water Dredging sewers often improve drainage to avoid flooding occurred in the factory area, while limiting the pathogenic microorganisms 4.3.3 For industrial wastewater Industrial wastewater of plant mainly is leaked/is lost during recirculation (cooling devices), and the cyclic water tanks, waste water treatment system production include: Tank cooling Pump of cooling electric furnace Electric furnace Collect system Tower cooling Push pump Supplementary water Water filter Figure 7- Diagram treatment systems and electric furnace wastewater Presentation technology diagram: Cooling water oven according to the system path to sedimentation tank then pumped the cooling tower to lowering temperature, to ensure the input temperature of cooling water equipment, pumping systems including: + Smelting furnace: pumps (55 kW, 220 m3/h) + Super high capacity furnace: pumps (132 kW, 600 m3/h) After that, water is pumped into the cyclic system (includes pump: 55 kW, 050 m3/h), then the water is pumped back to the cooling device During cooling and cyclic a part of the water evaporates by heat and partly loss from the recirculation tank discharge into the sewage system general, industrial water will be added to industry water 43 + The average volume of waste water resulting from production: Approximately 605 m3/day + Water exhaust method: underground exhaust or be discharged into the doors including No.1 and No.2 Water tank of crystallize filter Pump of cooling water Crystallize filter Tower cooling Supplementary water Figure 8- Diagram treatment systems and casting machines wastewater Tower cooling 2nd Pump of cooling filter Cooling filter Clarifier 2nd Tower cooling Push pump Supplementary water Figure 9- Diagram of cooling water cyclic 2nd + Presentation technological diagram: Motor pump 160KW suck water from crystallizing tank fed into the casting system consists of molds (4 box crystallization) Crystallization box have road input and output 44 Input: Through crystallize filter (crystallize liquid steel) then the water flows through pipes into the cooling system by the cooling fan for cooling water at a temperature less than 270C Output: Thanks to the fan of the cooling system lowering temperature of water line through the heat of crystallize mold box free fall into the tank There is industrial water tank supplementary water the 1st in tank It makes the tank temperature reaches the target of the specifications of the casting machine Waste water after cooling the crystalline also has the pressure on the cooling tower, after cooled turbochargers used circulation Water let out 2nd of continuous casting machine through the sedimentation tank in the workshops Pump pressurized for the cooling tower and chiller Then, it increased pressure and used cyclic Industrial wastewater was back cyclic flow into the system of Luyen Thep Luu Xa factory arae and flow into Cam Gia streams Then, it flows into Cau River 4.4 Results of measuring and analyzing of wastewater Table 4.5 - Results of measuring and analyzing industrial wastewater No Analysis Indicators Results Unit Before After treatment (C1) treatment (C2) Performance QCVN treatment 40:2011/ (%) MORNE * pH - 7,2 6,9 4,1 5,0 - 9,0 * BOD5 mg/l 15 11 26,7 50 * COD mg/l 36,5 29,5 19,2 150 * TSS mg/l 13,6 11,1 18,4 100 * As mg/l 0,0052 0,0043 17,3 - * Cd mg/l [...]... Xa factory- Thai Nguyen Iron and Steel Join Sock Corporation Luyen ThepLuu Xa factory Figure 4 2- Geographical location of Luyen Thep – Luu Xa factory 4.1.1 General information - Facility Name: Branch Thai Nguyen Iron and Steel Join Sock Corporation – Luyen Thep Luu Xa factory - Address: Cam Gia Ward - Thai Nguyen City - Factory Manager: Mr Nguyen Minh Hanh - Geographical location: LuyenThep Luu Xa factory. ..Under the guidance directly by Associate Professor - Dr Do Thi Lan I studied the topic "Assessing the performance the wastewater treatment in Luyen ThepLuu Xa factory- Thai Nguyen Iron and Steel Join Sock Corporation " 1.2 Research’s objectives -Determining the performance of wastewater treatment at Luyen Thep Luu Xa factory - Research situation of environment in factory - Proposing solutions to increase... Iron and Steel Join Sock Corporation Steel Vietnam was established on 21/11/1946 includes 1,000 employees, including 20 engineers, 100 middle-level cadres to be trained in the country and foreign The factory was built on the main ground, the center of the Thai Nguyen Steel and Iron with original design included two smelting furnaces Martin with a total designed capacity of 100,000 tons of steel bars/year... maximizing equipment capabilities, the technology Continuing innovation management works and efforts engage further implementation of investment projects to expand production period II of the Thai Nguyen Iron and Steel Join Sock Corporation Step by step raise the quality of the staff and improve the life income for workers Building Party organizations and political organizations more powerful, maintain... sampling before sampling it - Sampling location: wastewater treatment system of Luyen Thep - Luu Xa factory, water sampling before and after treatment - Preservation of samples: Samples must be forwarded to the laboratory to avoid these biochemical reactions occur falsify results - Scope of Research: Area sewage treatment Luyen Thep - Luu Xa factory - Thai Nguyen Iron and Steel Industrial 21 - Time... technology of factory with other businesses steel production in the country By the July 2009 Thai Nguyen Iron and Steel Company perform equalizations and establishment Thai Nguyen Iron and Steel Company 4.1.3 The demand of production and activities Water use in the manufacture of the whole plant and fire hydrant water are taken from water source of energy enterprises + The demand use water production of factory: ... – Thai Nguyen City - Geographic Coordinates: 21033’15,2N; 105052’32,9E; 25 - Area: 46 848 m2 - Phone number: 0280 3832 431 Fax: 0280 3832 431; - The management agency: Corporation Thai Nguyen Iron and Steel; - Type of business: Enterprise 51% Joint Stock in state-owned capital 4.1.2 Summary process and status operations of factory Luyen Thep Luu Xa factory is a member unit of the Thai Nguyen Iron and. .. increase efficiency of wastewater treatment to achieve effective highest wastewater treatment 1.2.1 Request of topic - Assessing the true state of the processor performance of the wastewater treatment zones at the plant and the environmental situation of the Luyen Thep factory - Propose solutions to increase efficiency of wastewater treatment - The results of analysis of environmental quality parameters... Contiguous with Can Thep factory + West: Contiguous the road of the company + North: Contiguous the road of the company 28 Workshop of LuyenThep Factory Can Thep Factory The road of company Scrap yard Stockpile Can Thái Trung Factory Figure 4 3- The location of diagram contiguous side of Luyen Thep factory 29 Houses mechanical repairs Canteen workers Continuous Casting Machine Mix furnace pig -iron Treatment. .. organizations more powerful, maintain sustainable development of the units and the company (Thai Nguyen Iron and Steel Corporation factory, 2013) 19 In parallel with the renewing the work of executive management, in recent years, Luyen Thep factory has also focused on launched emulation movements and they promoted technical innovations in order to lower production costs and enhance competitiveness competitive ... performance the wastewater treatment in Luyen ThepLuu Xa factory- Thai Nguyen Iron and Steel Join Sock Corporation " 1.2 Research’s objectives -Determining the performance of wastewater treatment at Luyen. .. Diagram of sampling locations 24 PART IV: RESULTS AND DISCUSSION 4.1 Introduce to Luyen Thep- Luu Xa factory- Thai Nguyen Iron and Steel Join Sock Corporation Luyen ThepLuu Xa factory Figure 2-... of Luyen Thep – Luu Xa factory 4.1.1 General information - Facility Name: Branch Thai Nguyen Iron and Steel Join Sock Corporation – Luyen Thep Luu Xa factory - Address: Cam Gia Ward - Thai Nguyen