Common Issues in Enterprises Generating Domestic Wastewater
High Construction Costs for Three-Compartment Septic Tanks: A significant obstacle for startups due to substantial initial investment.
Strong Odors in Surrounding Areas: Necessitating isolation measures, exhaust fans, and sometimes chemical deodorization—leading to high expenses.
Unstable Microbial Systems in Treatment Processes: Resulting in effluent not meeting government standards, particularly concerning BOD, total nitrogen, ammonia (NH₄⁺), and coliform levels.
Complex Treatment Systems with Multiple Devices: Leading to high maintenance and repair costs, including equipment like various pumps (collection, equalization, return sludge, waste sludge, drainage, chemical dosing), mixers, chemical mixers, sludge scrapers, and air blowers.
Additional Challenges for Businesses:
High Treatment Costs per Cubic Meter: Ranging from 8,000 to 12,000 VND, encompassing electricity, chemicals, labor, and equipment maintenance.
Complex Systems Difficult to Operate Without Expertise.
Large Construction Areas and Extended Installation Times.
Expenses for Sludge Collection, Treatment, and Periodic Septic Tank Pumping.
Wastewater Treatment Can Be Much More Costly with the Wrong Solution
In contrast, all of the above issues will not occur at your domestic wastewater treatment station if you choose a better technology solution – a modern biological on-site domestic wastewater treatment technology!
Introduction to the Modern Biological Wastewater Treatment Technology – Jokaso
Since the 1970s, on-site wastewater treatment technology (Jokaso) has been widely applied in Japan to treat domestic wastewater directly at the source, right from individual households. Over time, the Jokaso on-site domestic wastewater treatment units have been continuously improved and have now become an essential household device commonly used in almost every Japanese home.
.jpg)
The modern on-site domestic wastewater treatment module was designed and installed by Dai Nam Environmental Solutions for a project.
However, applying the Jokaso technology directly to domestic wastewater treatment systems in Vietnam is not yet fully suitable due to the following reasons:
- The climatic conditions in Vietnam differ significantly from those in Japan.
- The environmental regulations in Vietnam are not identical to Japanese standards (for example: the standard for Ammonia (NH4⁺) in Japan is 20 mg/L, while in Vietnam it ranges from 5–10 mg/L (Column A → B)).
Therefore, in order to effectively apply the Jokaso on-site domestic wastewater treatment technology in Vietnam, Dai Nam Environmental Solutions has flexibly improved and adapted the treatment system’s process to match local conditions — and this improved version has been successfully implemented in various projects we have carried out.
Here is the treatment process of on-site domestic wastewater used in one of our projects:
Jokaso Domestic Wastewater Treatment Process Diagram
Our on-site domestic wastewater treatment technology is perfectly suited for customers in locations where domestic wastewater is generated, such as:
- Office buildings and high-rise towers
- High-rise apartment buildings and residential areas
- Villas and resort complexes
- Hospitals, medical centers, and general clinics
- Companies, factories, and warehouses
- Restaurants and hotels
Why are these the ideal customers targeted by Dai Nam?
Buildings — including hotels, office towers, and apartments — generate domestic wastewater from daily activities such as bathing, washing, cooking, cleaning, and toilet use.
This type of wastewater often contains high concentrations of BOD, COD, SS, and coliform, which must be properly treated before being discharged into the environment. This is essential to minimize environmental pollution and protect the quality of our living surroundings.
.png)
Become a Pioneer in Installing Japan's Jokaso Domestic Wastewater Treatment System
So, what are the benefits and values that our on-site Jokaso wastewater treatment technology brings to you?
TECHNOLOGICAL BENEFITS
Modern biological treatment technology: Utilizes naturally occurring microorganisms that are safe for humans and the environment. No chemicals are used during treatment, except for chlorine used for post-treatment disinfection.
The system is simple in design, using durable materials that are easy to operate and maintain.
The treatment process produces no sludge, significantly reducing the cost of sludge transportation compared to traditional activated sludge systems.
The system operates stably and consistently meets Vietnam’s national standard QCVN 14:2008 on domestic wastewater, at any time.
The wastewater treatment units are pre-fabricated in modular form, allowing for flexible and fast installation.
This technology can handle strict discharge standards, especially for wastewater with a high organic load.
Construction time is significantly shorter compared to conventional technologies, as most components are pre-assembled in the factory. Installation time ranges from 5 to 7 days when using our pre-fabricated composite integrated system.
COST-SAVING BENEFITS
Saves land area for construction: no need to build septic tanks, equalization tanks, or sludge holding tanks.
Low investment and operational costs: The modular treatment system has a low initial investment, and the system only requires two air blowers—no complex pump networks.
Extremely low operating cost, with a treatment cost of under 2,000 VND per cubic meter.
Significantly reduces sludge collection and treatment costs compared to traditional systems.
No septic tank pumping required, saving ongoing maintenance costs.
LIFESTYLE BENEFITS
The system produces no odor, making it possible to use the surface area above the tank as a parking space.
Treated water can be reused for non-potable purposes such as watering plants, floor cleaning, and general sanitation in factories and offices.
So Many Benefits — It's Easy to Make the Right Choice, Isn’t It?
WHY SHOULD YOU CHOOSE ĐẠI NAM’S SERVICES?
Dai Nam Environmental Solutions is committed to providing a 24-month warranty on all domestic wastewater treatment systems for our valued customers.
Book a consultation today!
As a special offer, we’re giving our customers exclusive gifts including:
FREE SUPPORT for preparing discharge permit documentation and biannual environmental monitoring reports for 24 months — at no additional cost.
