STUDY ON THE APPROPRIATE TECHNOLOGY FOR LATEX PROCESSING WASTEWATER TREATMENT

Transcription

1 STUDY ON THE APPROPRIATE TECHNOLOGY FOR LATEX PROCESSING WASTEWATER TREATMENT

2 Introduction of the Research Objectives To determine the approriate treatment approaches in terms of high treatment efficiency to meet Vietnamese effluent standards and oriented to wastewater reclaimation

3 Introduction of the Research Scope The main contents of the research include: To survey situation of some current latex processing wastewater treatment plants (WWTPs) in Dong Nai and Binh Duong provinces. Troubles during the pratical operation of the surveyed WWTPs will be found and the drawbacks of the current technology will be assessed. To study primary treatment unit operations (coagulation or DAF), biological treatment processes (Swim technology and Anamox process) and wastewater reclaimtion.

4 Introduction of the Research Content 1: Survey some current WWTPs Content 2: Research Study on primary treatment unit operations Assess treatment efficiency of WWTPs: -Sampling and analysis -SS, TKN, COD, BOD removal Questionaire survey: - Common troubles during operation -Trouble shooting -Energy consumption -Chemical consumption -O& M costs -WWTP management issues Coagulation: -Suitable coagulant doses -Optimum ph DAF: -Surface loading -Ratio Air to Solid (A/S)

5 Introduction of the Research Research Content 3: Study on Bead PVA reactor -Sludge loading -Effect of suspended solids on the performance Content 4: Study on Swim technology -COD loading -Coupled with Nitritation Content 5: Study on Anammox process -Nitrogen loading -SNAP process Content 6: Study on constructed for wastewater reclaimtion -Nitrogen surface loading -COD surface loading

6 Expected outcomes Number of Master Student thesis: 04 Number of Undergraduate s thesis: 04 Number of publications and patent application: National conference: At least two conferences International conference: At least one Domestic journal: Two (*) International journal: Two (*) Patent: 01 Note: (*) The first author is student

7 Laboratory current situation The Faculty laboratory is located C7 building with the total area of 510 m 2. The Faculty laboratory consists of three module-labs Faculty Manager Board Faculty Laboratory supervisor Trace organics Analysis Lab supervisor En. Engineering labsupervisor Water Quality Analysis Lab supervisor Organization chart of the laboratory of FF

8 Laboratory current situation The Trace Organics Laboratory has GC-MS, HPLC, Elisa and TOC-TN analyser for organic traces such as THMs, pesticides, anti-biotics, PCBs, etc.

9 Laboratory current situation Equipped with lab-scale reactors on physico-chemical operations and biological processes for water and WW treatment, air pollution control and SW disposal and recycling. Equipment for analysis of physico-chemical and biological parameters for wastewater, air and solid samples are available in this lab.

10 Laboratory current situation Water Quality Analysis lab has measurement instruments for water resources quality, wastewter characteristics and toxicity. Most of analysis instruments were invested by University Funding. Some of them were supported by JICA project and Ministry of Investment and Planning. All equipment have been used for research and training.

11 Supervision system Dr. Nguyen Phuoc Dan As Team Leader Prof. Furukawa Oversea experts Dr. Nguyen Ngoc Bich As co-advisor for 4 Master students Dr. Dang Viet Hung As supervisor for 02 Master students Dr. Le Hoang Nghiem As supervisor for Master student Dr. Bui Xuan Thanh As supervisor for Master student Mr. Nguyen Le As Lab Manager Ms. D. T.Thuy Phuong Master Student Mr. Phan The Nhat Master student Ms.L.T.Thuy Phuong Master student Undergraduate 1 Undergraduate 2 Undergraduate 3 Undergraduate 4

12 Research parners Name Position Organization Contact Director of Rubber Research Institute Dr. Nguyen Ngoc Bich Technology Center of Vietnam Mr. Vinh Mr. Le Thanh Trung Deputy Director Head of Environmental Management Office Dau Tieng Rubber Company Dong Nai Rubber Company

13 List of Master s thesis topics Study on bead PVA Anaerbic Filter for COD removal Study on swim bed technology using novel acrylic biomass carrier for BOD and nitrogen removal Study on constructed wetlands for reuse of the treated secondarily latex wastewater Study on nitritation using SWIM bed technology and Anammox process to removal nitrogen ammonia

14 Flow direction Swimming motion Attachment De- attachment Dominate fast growing (high activity) bacteria on BF Suspended sludge was mainly composed of well settling sludge

15 Support filament Fringe yam:made up of hydrophilic acrylic composite and with high porosity at the surface Sludge can attach to BF easily and quickly. Good removal efficiency can be obtained soon. Long food chain Sludge production was reduced. Fiber Anaerobic zone Aerobic zone Nitrification and denitrification can be achieved simultaneously

16 Less sludge production the settling tank could be omitted in treating low loading rates wastewater With higher intensity and durability service life was longer. It was possible for BF to treat wastewater, such as high COD con. and high loading rates, low loading rates in short HRT and high SS conc. It was easy for management. Remarkable wastewater treatment performance can be attained in BF process

17 BF Reactor P 2 P 1 Effl uen t P1 : Influent pump P2 : Aeration pump Reactor Available volume Cross section Height Packing material T-A 21. 6L cm 1 640cm Biofringe

18 3rd generation reactor

19 50 L anammox reactor Effluent Volume. 50 L Temp 30 ~ 40 o C HRT.. 24 ~ 8 h Sampling port Influent Up- flow column reactor 1 7, 000cm 3 of polyester non- woven biomass carrier (packing ratio 40%, 35%)

20 Start up 3 months later 4 months later

21 Start up After 3 months

22 Partial Nitritation Reactor Schematic diagram of reactor system (1) Influent tank (2) NaHCO 3 solution (3) ph controller (4) Bicarbonate pump (5) Influent pump (6) Air-flow meter (7) Reactor (8) Air pump (9) Heater (10) Effluent Working Volume: 5 L Acryl resin fiber as biomass carrier (BIOFIX; NET Co., Ltd.; Japan) Advantages: - Light, durable, cheap - Retention of much biomass

23 Constructed weland Nước vào Sỏi Mực nước Cát Nước ra Lớp lót Đá Lọc Nitrát hoá, khử nitrát Phân hủy hữu hoá cơ Hấp thụ, hấp phụ, trao đổi ion

24 Supervion system A Faculty member who is a doctor from Department of Environmental Engineering will be designated as a main supervisor of two Master Students and undergraduate students. A doctor, coming from the Institute of Vietnamese Rubber Institute, will be a Co-advisor of all master students. An advisor will be responsible for the following tasks: (i) Guide on set-up and revise the detail proposal of Master students, (ii) Review literatures that the students collected, (iii) Guide on analysis experiment data and check experiment results (iv) Monitor and remind students their implementation of action plans they proposed.

25 Supervion system Each master s student will be responsible to supervise an undergraduate student on: (i) guide on analysis methods, (ii) set-up the plan of experiment runs, (iii) Check and analysis on the experimental results and (iv) guide him/her on writing thesis.

26 Actions to achieve the goals To facilitate master s students to work full-time in their lab. The Faculty laboratory will (i) provide a desk for each master student, (ii) Assign a research assistant to help us to set-up reactors, procurement of equipment, chemicals, glasswares and electricity/water facilities, etc.

27 Actions to achieve the goals To designate a master s student as a lab manager of his research group and co-advisor for a undergraduate student; To request the master s students to do the progress report for each three months of experiments. The progress reports will be presented as academic seminars in which staff members and students will be invited to attend. To request each master s student as the main author to write at least an academic paper that will be submitted to the international and national journals/conference.

28 Schedule for Research

29 Work Progress The following works were completed: 05 latex processing wastewater treatment plants: 03 in Dong Nai and 02 in Binh Duong were surveyed The draft research proposal was amended and accepted by Prof.Furukawa, who is a Japanese research partner Thesis topic and scope of each topic for 04 master students were fixed; Literature review for concerned research is being prepared by Master students;

30 Work Progress The following analysis equipment were procured: DO meter and accessories of GC-MS for gas analysis; 04 reactors are being manufactured. They will be finished on 15 Oct. The following equipment used for reactors will be procured: Wastewater pumps and air pumps; Each student is being prepared own proposal for her/his research topic they will defence their proposal in the end of the next November.

31 Pictures on Survey

32 Pictures on Survey

33 Pictures on Survey