Waste disposal technology must take regional characteristics into account

Prof. Dang Kim Chi, former Vice Director of the Institute for Environmental Science and Technology speaks to the Viet Nam Government Portal on which waste disposal techniques are suitable for Vietnam.

Appropriate technology needed to treat solid waste

Vietnam seeks models of solid waste treatment technology

Waste disposal technology must take regional characteristics into account
Garbage awaiting process at the Ben Tre waste treatment plant in the southern province of Ben Tre. — VNA/VNS Photo

How many waste disposal techniques have been applied in Vietnam?

At present, there are three main waste disposal techniques which have been used in Vietnam. However, the most common and traditional is the dumping method. Vietnam has more than 450 waste dumping sites with size larger than one hectare. There are, however, countless small landfills scattered all over the country.

The second technique is incineration. Currently, Vietnam has about 285 incinerators, of which 76 per cent are small scale – with capacity of about five tonnes of waste per day and only 21 incinerators have the output of more than 50 tonnes per day.

The third technique is turning trash into electricity or to make compost. This technology is still fairly new to Vietnam, so it is still in the trial period and there's currently only one factory being built that is specialised in this operation.

Regrettably, waste in Vietnam is not separated at the source like in many foreign countries, hampering efforts to solve trash issues using modern technologies. For example, we couldn't ensure the quality of the trash that goes into the production of compost, so the resulting compost was not applicable for fruit trees, and could only be used in forestry, but the transport costs presents another problem.

About a decade ago, there was a plan to build a compost factory at the Nam Son landfill complex, some 20km from Hanoi, but after calculating its cost and effectiveness, the project was shelved.

What technology is the most suitable and easy to be applied in Vietnam?

The Government has always encouraged the use of the latest technology in waste treatment. Yet, before introducing any technology, we have to do the appraisal carefully, as each region and locality requires a different approach. For example, in urban areas or in delta regions, the most appropriate method is incineration. However in remote or mountainous regions, we can use the dumping method - of course we have to select the latest technology to ensure good hygiene and no contamination.

 

But whatever technology is selected, we have to take into consideration the waste components. Waste with high organic content could be made into fertiliser while urban waste, which frequently contains plastic and other hard-to-decompose materials, should be burned. Some technologies have been applied in Vietnam, for example the treatment of household waste by using incineration, with the heat produced in this process captured to be used in other purposes. This technology usually costs less as it uses less energy and the humidity and other nonflammable materials in the trash were sorted out beforehand.

However, the most challenging thing for Vietnam in using modern technology is our waste sorting activity is still very rudimentary. In other countries, in public places, there are at least three or five different containers available for people to put their waste into, recyclable plastic and nylon stuff will be separated from other trash that could be buried or burnt.

How do you respond to the idea that the Government should allow fair competition in waste treatment technology?

I can’t agree more. Each locality should select what technology they think is the most appropriate for them, effectiveness and cost-wise.

Furthermore, competition is a good way to encourage developers to come up with the most up-to-date technology with low cost yet high efficiency. Different investors with different approaches would compete with each other and the performance will be rated by a council.

What should Vietnam do to achieve sustainable and efficient management of solid waste, with a focus on sorting at source?

To achieve such a target, we need to consider waste as a natural resource which needs good management and good way to exploit its benefits to society at the least cost.

In the near future, we need to give priority to recycling technology in accordance with the principles of environment, economy and society. And of course, that technology should not create byproducts which are harmful and dangerous to the environment and the people.

Last but not least, the authorities should come up with specific rules on waste separation at source while launching mass communication campaigns to raise the general public’s awareness on keeping the environment clean.

VNS

 
 

Other News

.
VN government decree to sweep away spam calls
VN government decree to sweep away spam calls
SCI-TECH & ENVIRONMENTicon  22/08/2020 

Businesses in the fields of real estate, insurance and education will bear the biggest influences from the newly released decree on preventing spam messages and calls.

Flood season coming late, drought may hit Mekong Delta again next year
Flood season coming late, drought may hit Mekong Delta again next year
SCI-TECH & ENVIRONMENTicon  21/08/2020 

This year’s flood season in the Mekong Delta is likely to arrive late and if there is insufficient rain in the months to come, drought and saltwater intrusion may plague the region again during the next dry season, experts have warned.

Bluezone Covid-19 tracking app downloaded 20 million times
Bluezone Covid-19 tracking app downloaded 20 million times
SCI-TECH & ENVIRONMENTicon  21/08/2020 

Bluezone, a Bluetooth-based app that helps determine if a person has come in contact with a COVID-19 patient, has tracked 1,391 cases of people having close contact with an infected or suspected Covid-19 infection.

Hanoi river water remains polluted
Hanoi river water remains polluted
SCI-TECH & ENVIRONMENTicon  22/08/2020 

The quality of surface water in many lakes and rivers in the north has improved, but 15 monitoring areas of 185 that have been monitored remain heavily polluted, mainly on the Cau and Nhue-Day rivers.

Air quality improving in northern region
Air quality improving in northern region
SCI-TECH & ENVIRONMENTicon  20/08/2020 

Air quality in the north of the country is improving, according to the Vietnam Environment Administration.

“Make in Vietnam” Awards to honor VN digital technology solutions
“Make in Vietnam” Awards to honor VN digital technology solutions
SCI-TECH & ENVIRONMENTicon  20/08/2020 

The Ministry of Information and Communications (MIC) and the Vietnam Chamber of Commerce and Industry (VCCI) on August 19 launched the “Make in Vietnam” Awards. 

Dialogue looks at Vietnam - EU maritime economic cooperation
Dialogue looks at Vietnam - EU maritime economic cooperation
SCI-TECH & ENVIRONMENTicon  20/08/2020 

A dialogue with the theme “Sustainable Maritime Development: Sharing Vietnam and EU’s Perspectives” took place in Hanoi on August 19 with over 150 in attendance.

Information and Communications Ministry sets eight key programs for the new period
Information and Communications Ministry sets eight key programs for the new period
SCI-TECH & ENVIRONMENTicon  19/08/2020 

“The ICT industry can create a pair of wings for the country to fly. One wing is digital technology and the other is communication," Information and Communications Minister Nguyen Manh Hung said.

HCM City to charge fee for sewerage to reduce flooding
HCM City to charge fee for sewerage to reduce flooding
SCI-TECH & ENVIRONMENTicon  21/08/2020 

HCM City Department of Construction has proposed to collect fees on discharged water in an effort to deal with the severe flooding problem in the area.

Western sea dyke needs urgent protection
Western sea dyke needs urgent protection
SCI-TECH & ENVIRONMENTicon  19/08/2020 

Many sections of the western sea dyke in Ca Mau and Kien Giang provinces in the Mekong Delta have seriously eroded and could collapse at any time if prompt protective measures are not taken.

High-tech trash bins wow Hanoians
High-tech trash bins wow Hanoians
SCI-TECH & ENVIRONMENTicon  22/08/2020 

If they were to ever think about trash, most people would picture a load of waste thrown. New style trash bins, developed from human creativity, can also be used for storage and contribute to beautifying city streets.

Vietnam takes the lead in ASEAN’s digital evolution
Vietnam takes the lead in ASEAN’s digital evolution
SCI-TECH & ENVIRONMENTicon  19/08/2020 

With its great potential in IT, Vietnam as ASEAN chair has been making efforts together with other member states in boosting the application of high technologies to adapt to the Fourth Industrial Revolution, which is sweeping regionwide.

Time to ensure security of water sources, safety of dams and lakes: experts
Time to ensure security of water sources, safety of dams and lakes: experts
SCI-TECH & ENVIRONMENTicon  20/08/2020 

Vietnam has recorded outstanding socio-economic development and has been lauded for it by the international community, but along with progress, the country is facing challenges with water management and security, an official has said.

Food donated to save zoo animals in HCM City
Food donated to save zoo animals in HCM City
SCI-TECH & ENVIRONMENTicon  18/08/2020 

Saigon Zoo has received tonnes of fruits and vegetables from donors across the country to feed the zoo animals after a recent plea from the managers.

Vietnam aims to be among top 30 countries for Global Cybersecurity Index
Vietnam aims to be among top 30 countries for Global Cybersecurity Index
SCI-TECH & ENVIRONMENTicon  17/08/2020 

By 2030 Vietnam will be listed as one of the top 30 countries for the International Telecommunication Union’s (ITU) Global Cybersecurity Index, targeted the national digital transformation program. 

Ben Tre province repairs eroded riverbank section
Ben Tre province repairs eroded riverbank section
SCI-TECH & ENVIRONMENTicon  16/08/2020 

The Mekong Delta province of Ben Tre is restoring a section along the banks of Ba Lai river that eroded when a temporary dam was removed along the banks.

Bluezone helps saves resources to fight against Covid-19
Bluezone helps saves resources to fight against Covid-19
SCI-TECH & ENVIRONMENTicon  16/08/2020 

If this app is deployed on a large scale enough, Bluezone will help save huge social resources and cost to fight Covid-19 epidemic in Vietnam, as well as help the economy resume operation under the new normal state.

5G network testing licences for Viettel, VNPT and MobiFone extended
5G network testing licences for Viettel, VNPT and MobiFone extended
SCI-TECH & ENVIRONMENTicon  16/08/2020 

The Telecommunications Department said that the Vietnam Post and Telecommunications Group’s (VNPT) license to test the 5G technology has expired and it has asked for extension. 

Ministry proposes solutions to raise Vietnam’s e-Government rankings
Ministry proposes solutions to raise Vietnam’s e-Government rankings
SCI-TECH & ENVIRONMENTicon  14/08/2020 

In its recent report on the UN’s e-government rankings, the Ministry of Information and Communications has proposed that Prime Minister direct and assign key tasks to ministries, branches and localities to implement a number of solutions

Make-in-Vietnam blockchain platform debuts to assist digital transformation
Make-in-Vietnam blockchain platform debuts to assist digital transformation
SCI-TECH & ENVIRONMENTicon  14/08/2020 

The Ministry of Information and Communications, on August 13, held a ceremony to debut the akaChain blockchain platform, as part of a programme introducing “Make in Vietnam” digital platforms.

 
 
 
Leave your comment on an article

OR QUICK LOGIN