BaoCao kyoto 21 07 08 eng 2

Các quá trình về xử lý bằng đất Tưới nước: Tưới bằng nước thải, quá trình xử lý bằng đất được áp dụng phổ biến nhất hiện nay, bao gồm việc tưới nước thải vào đất và để đáp ứng các yêu cầu sinh trưởng của cây cối. Dòng nước thải khi đi vào đất sẽ được xử lý bằng những quá trình vật lý, hoá học và sinh học. Dòng nước thải đó có thể dùng tưới cho các loại cây bằng cách phun mưa hoặc bằng các kỹ thuật tưới bề mặt như là làm ngập nước hay tưới theo rãnh, luống. Có thể tưới cho cây trồng với tốc độ tiêu thụ từ 2,5 7,5 cm tuần. Thấm nhanh vào đất : Theo phương pháp này, dòng nước thải được đưa vào đất với tốc độ lớn (10 210 cm tuần) bằng cách rải đều trong các bồn chứa hoặc phun mưa. Việc xử lý xảy ra khi nước chảy qua nền đất (đất dưới mặt) ở những nơi mà nước ngầm có thể dùng để đảo ngược lại gradient thủy lực và bảo vệ nước ngầm hiện có ở những nơi chất lượng nước ngầm không đáp ứng với chất lượng mong đợi nước được phục hồi quay trở lại bằng cách dùng bơm để hút nước đi, hoặc là những đường tiêu nước dưới mặt đất, hoặc tiêu nước tự nhiên.

ENVIRONMENTAL MANAGEMENT BASED ON COMMUNITY’S ACTIVITIES: A CASE STUDY AT DAM RONG LAKE, THUAN PHUOC WARD, DANANG CITY, VIETNAM Dr Tran Van Quang Department of Envinronment Danang University of Technology Danang University • DEPARTMENT OF ENVIRONMENT, DANANG UNIVERITY OF TECHNOLOGY • GRADUATE SCHOOL OF GLOBAL ENVIRONMENTAL STUDIES, KYOTO UNIVERSITY STUDYING SITE: Dam Rong Lake, Thuan Phuoc Ward, Danang City (1 STUDYING SITE: cont.) Hanoi DaNang Square: 1,259 km2 Population: 752,493 people Ho Chi Minh City Thuan Phuoc Ward Square: 110ha Population: 16,570 Average Income: 600-700$ (1 STUDYING SITE: cont.) Dam Rong Lake Square: 1.2 Deep: 1.2-1.3m Bottom mud: 0.5-0.6m Âu Dock thuyền Kênh Canal thoát nước Basin area: 210 Ha Population: 62,000 people Sewarage quantity: 6000m3/day.nigh The role of the lake: - Rain water regulation - A landscape of the City Hồ Dam Đầm Rong Rong lake INTRODUCTION 2.1 Problems of Dam Rong Lake - Water is polluted by organic matters, nitrogen - Air is polluted by bad smell from the lake all year round • DEPARTMENT OF ENVIRONMENT, DANANG UNIVERITY OF TECHNOLOGY • GRADUATE SCHOOL OF GLOBAL ENVIRONMENTAL STUDIES, KYOTO UNIVERSITY (2 INTRODUCTION: cont.) 2 The reasons - Non-treatment drainage without treatment flows directly in to the lakes It causes bad smell, especially, in dry season - Solid Wastes from the households around the lake (nylon bags, organic waste etc) • DEPARTMENT OF ENVIRONMENT, DANANG UNIVERITY OF TECHNOLOGY • GRADUATE SCHOOL OF GLOBAL ENVIRONMENTAL STUDIES, KYOTO UNIVERSITY (2.3 INTRODUCTION: cont.) 2.3 Suggested Solutions - Build new sewerage system to collect drainage - Collect bottom mud ⇒both of the solutions are not available (do not have budget) and low effect - Or some people even said that we should fill in this lake (the important role of the lake is rain water storaged) - Flow water hyacinth They have done but mosquito appear to much The problems of the lake has not been solved yet • Department of Enviroment, Danag University of Technology • Graduate Scool of Global Enviromental Studies, Kyoto University OUR RESEARCH A STUDY OF ENVIRONMENTAL MANAGEMENT BASED ON COMMUNITY RESEARCHING SITE: DAM RONG LAKE AREA, THUAN PHUOC WARD, DANANG CITY, VIETNAM HOST  Trường Mơi trường tồn cầu Đại học Kyoto  Khoa Môi trường Trường Đại học Bách khoa    Trường Tiểu học Võ Thị Sáu UBND Phường Thuận Phước Department of Natural Resource and Environment 3.1 TARGET LONG TERM TARGET To plan a model of environmental management based local community To find out a environmental technology method to control and solve water polutted Recent Target To raise community awareness about environmental protection; to call on community activities and responsibility for environmental protection activities at the area To conduct (determine) the possibility in control water pollution problem by environmental technology 3.2 DEVELOP SOLUTIONS 3.2.1 Call on local government’ supports and Community’s cooperation: Discuss with local government, meeting with the local community people Local government To learn well policies, regulation, system etc can be applied Community Develop some solutions Control pollution Scientific orgnizations Introduce and apply the environmental method to solve the problems of the lake (Technique, operation) (3 REAL ACTIVITIES: cont.) b At the Thuan Phuoc Ward + Collect community opinion + Establish Environmental Protection Board + Meeting and discussion to find so some p the solution + Solid waste collection(every week tuần) (3 REAL ACITVITIES: cont.) 3.3.2 Science solution: Apply eco-technology method a Purpose Do experiment and find a right eco-technology solution to help reducing water pollution Prove the possibility to control the pollution problems of eco-technology method It would help to call on the supports from local government, community, government organizations etc for solving the problems of the lake b Eco-technology methods: Wet land filter system Floating filter system Increase the self-clean ability of eco-system Notice: The pollution cannot be reduce if we not apply eco-technology solution Wet land filter module Floating filter module Collect floating waste, mud (supply more oxygen for oxygenation process: self-clean ability) 3.4 RESULTS 3.4.1 Community awareness has been raised up Community people attend to collect waste; make net for solid waste collection…positively 3.4.2 Get the supports of local government Provide budget to make fence around the lake and collect bottom mud; have plan to build eco-park for community people 3.4.3 Results after applied eco-technology Hiện trạng mơi trường ngày 16/2 (3.4.3 The results: cont.) • Environment became better • Water quality is better • Bring back economic effective nesses (can collect some kinds of water insect (artemi) for feeding fishes) Fishing Collect Artemi 3.5 REMAINING PROBLEMS Water quality is still polluted (organic matters, nitrate etc.) floating mud from bottom mud (thick bottom mud) driannage bring mud into the lake Bad smell is remained in dry season Because of organic waste is disintegrated CONCLUSIONS AND SUGGESTIONS 4.1 CONCLUSION: a The results from Environmental Education Acitvities: - The awareness of the community about environmental issues has been raised up For example: - The citizens here not throw gabbage in to the lake or public areas; they have arranged a couple day in a month to collect solid wastes, clean up the road, public areas in their ward - The local government has developed some activities to improve the environment of this ward - The cooperation between government and the community has been established It would help to solve the environmental problems here easier • DEPARTMENT OF ENVIRONMENT, DANANG UNIVERITY OF TECHNOLOGY • GRADUATE SCHOOL OF GLOBAL ENVIRONMENTAL STUDIES, KYOTO UNIVERSITY (4 CONCLUTIONS AND SUGGESTIONS: cont.) b.The results from applying Eco-Technology : - This method (floating filter and wet land filter module) is suitalbe in order to control the pollution of the lake Envinronment has been improved (water quality is better, ecosystem is recovered…) 4.2 SUGGESTIONS: - It is very necessary to continue developed solutions (environmental education and environmental technology method in larger areas) • DEPARTMENT OF ENVIRONMENT, DANANG UNIVERITY OF TECHNOLOGY • GRADUATE SCHOOL OF GLOBAL ENVIRONMENTAL STUDIES, KYOTO UNIVERSITY (4.2 SUGGESTION:cont.) - Supply boat, waste collection basket, basket for the community - Apply eco-technology solution in larger area: - Find out more economical effects: ex: food for feeding fish (artemi) - Find a fund for community activities… - Cooperate with gorvernment organizations in infrastructure improment project THANK YOU FOR YOUR ATTENTION MƠ HÌNH TIẾP CẬN Develop the measures Reduce complainC¶nh quan đô thị, giảm than phiền Management & Khai thác Tạo việc làm cho cộng đồng Các dịch vụ phát triển Quản lý & Vận hành Kiểm soát tốt ô nhiễm (Chủ thực hồ) Nộp ngân sách Cùng tham gia Cộng đồng Quản lý nhà nớc Thu thuế & phí dịch vụ Ngòi kinh ... 1 ,25 9 km2 Population: 7 52, 493 people Ho Chi Minh City Thuan Phuoc Ward Square: 110ha Population: 16,570 Average Income: 600-700$ (1 STUDYING SITE: cont.) Dam Rong Lake Square: 1 .2 Deep: 1 .2- 1.3m... operation) 3 .2 DEVELOP…: cont.) 3 .2. 2 Developing steps 1st step Introduce about our solutions 2nd step Explain and teach the community people how to apply 3rd step Develop the sollutions 3 .2. 3 Applying... public area… Apply eco-technology to reduce the polution of the lake (3 .2 DEVELOP…: cont.) 3 .2. 4 Developing time - 20 06 -2 007 - Propagandize about environmental issues in order to raise up the community