Page 24 - Agricultural innovation

3.6. Shrimp Farming Model in Huetronics in Thua Thien Hue Province
3.6.1. General inforation

The shrimp farming industry in the Mekong Delta, especially in localities such as provinces of Ca Mau,
Bac Lieu, etc., has helped Vietnam’s shrimp export output increase sharply, farmers’ incomes have been
greatly improved, compared with rice cultivation. However, after a few years of farming, farmers often
fail due to total losss or the yield drops sharply. The main cause is environmental pollution. During
the farming process, most of the excess organic matter from the feed remains in the water source. In
addition, the amount of chemicals and antibiotics used in the farming process is also deposited in the
bottom of the pond without treatment. The bottom of the pond is also the place where the bottom sludge
layer is formed due to the long-term accumulation of organic substances, residues, and is the habitat of
rotten microorganisms, or microorganisms that produce toxic gases such as NH , NO , H , H S, CH ,
2
2
3
4
2
and pathogenic microorganisms (vibrio spp., aeromonas, E�coli, pseudomonas, proteus, staphylococcus).
All of the above chemicals, antibiotics and microorganisms are piled up in a shrimp pond, creating
favorable conditions for disease-carrying organisms to multiply and develop. This is very dangerous,
especially when shrimp ponds are often reared at high densities, compressing large amounts of shrimp
into a small living area full of pathogens, and as a result, farming efficiency drops sharply in the
following seasons. Meanwhile, to replace this water source, farmers often discharge dirty water into
the environment and get new water from the sea. However, the inlet and outlet water systems of shrimp
farming are mixed. One household pours out the wastewater while the other takes it in. Therefore,
shrimp farmers have spent relatively big money to treat the pond environment, but the results are not
as expected. On the other hand, the overuse of chemicals to disinfect water such as chlorine, iodin,
potassium, etc. can lead to environmental degradation and cause drug resistance to bacteria, viruses,
pathogenic microorganisms.
To solve the water problem for shrimp farming, Huetronics Company has applied ultrasonic
electrochemical technology as well as other integrated solutions to raise high-tech shrimp with
guaranteed productivity and quality in many localities in the Mekong Delta.

3.6.2. Model development
Established in 1989, Huetronics is a long-time unit operating in the field of manufacturing and trading
electronic and information technology products in Vietnam. This is a pioneer in Vietnam in research
and application of biotechnology, physics, production of electronic equipment, high-tech equipment
applied to clean agricultural production.
New technologies have been researched, developed and transferred by Huetronics to farmers in
localities in the country, including advanced electrochemical-ultrasonic processes applied to water
treatment for aquaculture; nano ALK active ingredient controls pH, alkalinity, dissolved CO and
2
macronutrients; HEM application for water treatment, livestock and plant care; highly active mineral
(HAM) maintains and improves the health of intensively cultured shrimp; PSB system of photosynthetic
purple bacteria application to ensure the best quality of shrimp farming environment.
The most prominent is the advanced electrochemical-ultrasonic technology, which is good at treating
water with salinity above 3 parts per thousand. This technology both creates nano-level microbubbles
and generates many free radicals with the following features: strongly oxidizes pollutants, without the
use of chemicals.
Specifically, salt water with a concentration varying from 5g/L to 30g/L flows slowly through
the pair of electrode plates to create an anolyte electrochemically activated solution containing air

Agricultural Innovation Review in CLV Countries 17