Luận văn Thạc sĩ - Chưa phân loại | Hanoi University of Science, VNU

INFORMATION ON MASTER’THESIS
1. Full name: VO THI MINH ANH

2. Sex: Female

3. Date of birth: April 1st, 1976

4. Place of birth: Ha Noi

5. Admission decision number:

Dated

6. Changes in academic process: adjust staff master's thesis (Decision No. 1823/QD-SDH
05/10/2012 and Decision 3212/QD-SDH date 08/24/2012).
7. Official thesis title: “Technology assessment of wastewater treatment systems in a
number of hospitals in Hanoi and solutions to improve treatment efficiency”.
8. Major: Environmental Science

9. Code:60 85 02.

10. Supervisors: Assoc.Prof. Tran Thi Hong, The Hanoi University of Science, Vietnam
National University, Hanoi
11. Summary of the finding of the thesis: file attached.
12. Practical applicability:
- The basis of conformity assessment of technology wastewater treatment systems in
hospital.
- Hospitals can apply one of the measures proposed to improve the performance of
wastewater treatment system of each hospital
13. Further research directions: no
14. Thesis-related publications: no

Date:
Signature:

Full name: Vo Thi Minh Anh


TECHNOLOGY ASSESSMENT OF WASTEWATER TREATMENT
SYSTEMS IN A NUMBER OF HOSPITALS IN HANOI AND SOLUTIONS
TO IMPROVE TREATMENT EFFICIENCY

INTRODUCTION
Hospital wastewater arising from many different sources during the
operation of the hospital, such as: blood, body fluids, patient clothes, towels,
blankets for the beds, washing the medical supplies, laboratory, surgical, obstetric,
hygiene, cleaning, cleaning the prevention…Characteristics of the wastewater is
more impurities, organic matter, nutrients and especially the germs. Most types of
wastewater must be treated and disinfected before being discharged into the
environment.
The country now has about 44% of hospital medical wastewater treatment
system (76.5% of the central hospitals; 53% of provincial hospitals and 37% of
district hospitals). However, wastewater treatment systems in many hospitals are
designed for a long time ago, treatment technology do not meet environmental
standards and need to be repaired, upgraded to suit scale development, health care
needs of the people and meet the standards, national technical standards on
environment. Besides, the number of patients and the number of hospital beds
increasing due to population growth or a number of hospitals, health care facilities
improve service capacity to meet the health care needs resulting in a wastewater
treatment discharge increased, wastewater at a number of hospitals has exceeded the
design capacity of the treatment system. This caused remarkable impact on the
quality of wastewater after treatment. Thus, the conduct of research, performance

evaluation process, wastewater treatment technology suitable hospital work is
essential.
Therefore, we have chosen the theme: "Technology assessment of
wastewater treatment systems in a number of hospitals in Hanoi and solutions to
improve treatment efficiency”

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The object is evaluate the effectiveness of medical waste water treatment
system of wastewater treatment in a hospital in Hanoi as a basis for proposing
solutions to increase the performance of the system
CONTENT
Review of the literature on hospital wastewater treatment, environmental
technology assessment.
Survey of the current situations of wastewater treatment systems in 10
hospitals in Hanoi.
Technology assessment of wastewater treatment system at Hanoi Obstetrics
and Gynaecology Hospital and Viet Duc Hospital.
To propose solutions improve operational efficiency for wastewater
treatment systems and apply the proposed test at Hanoi Obstetrics and Gynaecology
Hospital. Evaluate the proposed test.
METHODS
Overview of data collection methods
Field survey methods and sampling
Empirical research methods and analysis
Data processing
Methods of analysis and evaluation technology
RESULTS AND DISCUSSION
The study was conducted to survey current situations of wastewater

treatment systems in 10 hospitals and to assess the suitability of technologies
applied in two systems in Hanoi Obstetrics and Gynaecology Hospital and Viet Duc
hospital, which formed the basis for proposing solutions to improve the
performance of these systems. The results are as follows:
Of the 10 regional hospitals in Hanoi, 9 had wastewater treatment systems
and all of the 9 systems were operating. 8/10 hospitals had wastewater collection

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systems which collected medical wastewater only. Wastewater treatment systems
under modules were mainly applied in these hospitals (6/10)
Results of the assessment of the appropriateness of technologies applied in
wastewater treatment systems in Hanoi Obstetrics and Gynaecology Hospital and
Viet Duc hospital showed that:
-

Wastewater treatment system in Viet Duc hospital relatively well treated

chemical, physical and microbiological parameters: COD removal efficiency was
67.4%, BOD 60.4%, SS 71.2%, ammonium 54%, coliform 99.99%. Except for
BOD (58.5 mg/L), all parameters met National Discharge Standards (QCVN
28:2010/MONRE), column B. Meanwhile, some indicators in the discharge from
wastewater treatment system of Hanoi Obstetrics and Gynaecology Hospital did not
meet national discharge standards which were COD, BOD and ammonium, with the
removal efficiency of 52.9%, 55%, and 4.78%, respectively.
-

The cost for treating 1m3 of wastewater (including chemicals, electricity and

labor cost) was 3,872 VND/m3 and 3,953 VND/m3

in Hanoi Obstetrics and

Gynaecology Hospital and Viet Duc Hospital, respectively.
-

Two systems were underground, tight systems which had less secondary

impacts on the environment and occupational safety.
-

These systems were suitable the urban area situation, did not affect

communities and they were not influenced by regional weather conditions
Solutions were proposed based on above data to improve the operational
efficiency of wastewater treatment systems in hospitals in general and in Hanoi
Obstetrics and Gynaecology Hospital and Viet Duc Hospital in particular with
regard to management and operation.
These solutions were tested in Hanoi Obstetrics and Gynaecology Hospital.
The result illustrated that removal efficiency of COD, BOD and SS increased (from
52.9 to 76.1%, from 55 to 72.4% andfrom 5 to 73.3%, respectively). COD in the
discharge met QCVN 28:2010/MONRE, column B for medical wastewater. The
treatment cost for 1m3 water was 4,289 VND.

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Currently, Viet Duc Hospital is certified as completing radically
environmental pollution treatment and is out of the list of seriously environmental

polluting sources under Decision 64/2003/QD-TTg April 22, 2003 on approving
“Plan thoroughly treating the basis cause serious environmental pollution”
promulgated by Prime Minister .

Keywords: technology assessment, treatment system, hospital wastewater.

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