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STUDY ON THE APPROPRIATE TECHNOLOGY FOR LATEX PROCESSING WASTEWATER TREATMENT
STUDY ON THE APPROPRIATE TECHNOLOGY FOR LATEX PROCESSING
WASTEWATER TREATMENT
Objectives To determine the approriate treatment approaches in terms of
high treatment efficiency to meet Vietnamese effluent standards and oriented to wastewater reclaimation
Introduction of the Research
Introduction of the Research
ScopeThe 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.
Introduction of the Research
Content 1:
Survey some current WWTPs
Content 2:
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)
Research
Introduction of the Research
Content 3:
Study on Bead PVA reactor
Content 4:
Study on Swim technology
-Sludge loading-Effect of suspended solids on the performance
-COD loading-Coupled with Nitritation
-Nitrogen loading-SNAP process
-Nitrogen surface loading-COD surface loading
Research
Content 5:
Study on Anammox process
Content 6:
Study on constructed for wastewater reclaimtion
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
Expected outcomes
Laboratory current situation
The Faculty laboratory is located C7 building with the total area of 510 m2.
The Faculty laboratory consists of three module-labs
Organization chart of the laboratory of FF
Faculty Manager Board
Faculty Laboratorysupervisor
En. Engineering labsupervisor
Water Quality Analysis Lab supervisor
Trace organics Analysis Lab supervisor
The Trace Organics Laboratory has GC-MS, HPLC, Elisa and TOC-TN analyser for organic traces such as THMs, pesticides, anti-biotics, PCBs, etc.
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.
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.
Laboratory current situation
Supervision system
Dr. Nguyen Phuoc DanAs Team Leader
Dr. Dang Viet HungAs supervisor for 02
Master students
Dr. Le Hoang NghiemAs supervisor for Master student
Mr. Nguyen LeAs Lab Manager
Mr. Phan The NhatMaster student
Ms. D. T.Thuy PhuongMaster Student
Ms.L.T.Thuy PhuongMaster student
Undergraduate 1 Undergraduate 2 Undergraduate 3 Undergraduate 4
Prof. FurukawaOversea experts
Dr. Bui Xuan ThanhAs supervisor for Master student
Dr. Nguyen Ngoc BichAs co-advisor for 4
Master students
Research parners
Name Position Organization Contact
Dr. Nguyen Ngoc BichDirector of Technology Center
Rubber Research Institute of Vietnam
Mr. Vinh Deputy DirectorDau Tieng Rubber Company
Mr. Le Thanh TrungHead of Environmental Management Office
Dong Nai Rubber Company
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
Flow direction
Attachment
De- attachment
Swimming motion
Dominate fast growing (high activity) bacteria on BFSuspended sludge was mainly composed of well settling sludge
Anaerobic zone
Fiber
Aerobic zone
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.
Nitrification and denitrificationcan be achieved simultaneously
Less sludge production → the settling tank could be omitted in treating low loading rates wastewaterWith 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 wastewatertreatment performancecan be attained in BF process
P1
P2
Effluent P1 ： Influent
pumpP2 ： Aerationpump
Reactor T－AAvailable volume 21 . 6L
Cross section 1 00×1 32cmHeight 1 640cm
Packing material Biofringe
BF Reactor
3rd generation reactor
Effluent
Influent
Sampling port
50 L anammox reactor
Volume……. 50 LTemp………30 ~ 40oCHRT………. . 24 ~ 8 h
• Up- flow column reactor• 1 7, 000cm3 of polyester non- woven biomass
carrier (packing ratio 40%, 35%)
Start up 3 months later 4 months later
Start up After 3 months
Partial Nitritation Reactor
7.50
1 2 3 4 5 6 7
8
9
10
Schematic diagram of reactor system(1) Influent tank (2) NaHCO3 solution (3) pH controller (4) Bicarbonate pump (5) Influent pump (6) Air-flow meter(7) Reactor (8) Air pump (9) Heater (10) Effluent
Acryl resin fiber as biomass carrier(BIOFIX; NET Co., Ltd.; Japan)
Advantages:- Light, durable, cheap- Retention of much biomass
Working Volume: 5 L
CCCCCCCCCCC CCCCCC
Nước vào
Lớp lót
Đá
Mực nước
Sỏi Nước ra
Nitrát hoá, khử nitrát hoá
Hấp thụ, hấp phụ, trao đổi ion
Lọc Phân hủy hữu cơ
Cát
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.
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.
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.
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.
Schedule for Research
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;
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.
Pictures on Survey
Pictures on Survey
Pictures on Survey
