About
Johkasou-STP
Packaged Wastewater Treatment Plant
01. WHAT IS JOHKASOU?
Johkasou is a single-tank purification system used to treat wastewater. The Japanese government has certified it as a third-party technology as effective in water treatment, tank durability, and manufacturing quality.
Johkasou is a reliable, cost-effective, space-efficient, and easy-to-maintain wastewater treatment system that consumes low power.
STP stands for Sewage Treatment Plant, which refers to the system’s function of treating and purifying wastewater. On the other hand, Johkasou is a Japanese word that means “purification tank.” It refers to a decentralized wastewater treatment system that uses microorganisms to clean wastewater.
Johkasou STP is a simple and compact sewage treatment system that treats wastewater from homes, schools, offices, and industries.
Jokasou Sewage Treatment Systems typically use a combination of physical and biological to treat sewage (black and gray water). Black water collects from toilets, and gray water from kitchens, bathrooms, laundry, etc.
In cities, most areas use large public sewage systems to clean wastewater. But in places where fewer people live, like villages or remote areas, building a big sewage system can be expensive and unnecessary. That’s where Johkasou becomes a smart and cost-effective solution.
Johkasou systems are popular not just in Japan but also in other countries like Indonesia, Bangladesh, India, Sri Lanka, and other countries in Asia and Africa.
These places use Johkasou technology because it is affordable, easy to install, and helps improve sanitation in areas without access to public sewer systems.
This system is especially helpful in areas where building large sewer lines is not practical. It is also good for protecting the environment by treating wastewater properly before releasing it.
As Japan’s population decreases, Johkasou systems are becoming even more important. They offer a reliable way to manage wastewater while keeping costs low. With their growing use in other countries, Johkasou technology is helping more communities around the world stay clean and healthy.
3D IMAGE OF FRP BASED SEWAGE TREATMENT PLANT (STP)
CUT MODEL OF PACKAGED TYPE STP
The Johkasou cut model gives a clear and detailed view of how modern sewage treatment systems are designed and function. With our cut model of packaged type STP, engineers and clients can easily understand the internal structure, biological process, and durability of these systems. From the Johkasou STP module to the compact Johkasou 3D model, and from the FRP STP image to the packaged type FRP STP model, every 3D representation helps visualize sustainable wastewater solutions with accuracy and clarity.
HOW TO WORK JOHKASOU?
WHY YOU NEED A JOHKASOU?
Johkasou, also known as “package treatment plants” or “onsite wastewater treatment systems,” can be a great solution for wastewater management for several reasons:
Cost-effective
Johkasou systems are generally more affordable compared to centralized wastewater treatment plants.
Versatility
Johkasou systems can be used in various settings, including residential homes, commercial buildings, and remote areas.
Environmental benefits
These systems employ advanced treatment technologies that effectively remove pollutants and contaminants from wastewater.
Energy efficiency
Johkasou systems are designed to be energy-efficient, with low power consumption.
Reliability and maintenance
These systems are designed to be reliable and require minimal maintenance
Flexibility in installation
Johkasou systems can be installed in areas where conventional sewer systems are not feasible, such as areas with high groundwater levels or limited space.
Water conservation
Johkasou systems often include features like water recycling and reuse options.
Odor control
These systems are designed to minimize odors associated with wastewater treatment. They incorporate odor control mechanisms.
Quick installation and scalability
Johkasou systems can be installed relatively quickly compared to centralized treatment plants.
Compliance with regulations
Johkasou systems are designed to meet or exceed local regulations and standards for wastewater treatment.
Reducing strain on centralized infrastructure
This can be particularly advantageous in areas with limited infrastructure capacity or in situations where the existing infrastructure is aging or in need of repair
Long lifespan
Johkasou systems are built to last, with durable materials and components. With proper maintenance and regular servicing, these systems can have a long lifespan
WHY JOHKASOU STP IS A SMART CHOICE FOR WASTEWATER TREATMENT?
Johkasou STP is not just about cleaning water—it also helps the planet and improves life for everyone. Here’s why it’s a smart choice:
- Reduces Pressure on Centralized Sewage Systems: Johkasou cleans wastewater right where it’s made. This means big sewage plants don’t have to work as hard. It also saves energy and reduces pollution, which helps protect the Earth.
- Saves Water: This system recycles water, which is super important in places where water is hard to find. It helps us use water wisely and makes sure we don’t waste it.
- Makes Communities Stronger: Johkasou lets people take care of their own wastewater. This makes communities more independent and ready to deal with challenges like more people moving in or changes in the weather.
- Helps the Planet: By using Johkasou, local areas can do their part to help the Earth. When communities handle their wastewater, they contribute to global efforts to keep the environment healthy.
Johkasou STP isn’t just a water-cleaning system. It saves energy, protects water, and helps the environment. Plus, it gives communities the power to take care of their own water needs. It’s a smart, simple, and sustainable solution for everyone.
KEY FEATURES OF A DAIKI AXIS JOKASOU STP
Applications
- Daiki Axis Johkasou STP is an onsite, compact-designed packaged type Sewage Treatment Plant (STP)
- Effectively used for both black water and gray water.
- Residential homes, educational institutions, hospitals, parks, and public toilets.
- Small businesses or commercial buildings.
- Hotels, motels, resorts.
- Remote or isolated areas without access to centralized sewerage systems.
Physical Features
- Compactness. Daiki Axis Jokasou systems are compact and designed for on-site wastewater treatment.
- Durable Material. The Daiki Axis STP Module is made of Fiber-reinforced plastic (FRP), which is very durable, non-corrosive, and easily refurbished.
- Lightweight. Because of the FRP material, the module is very lightweight.
- Simple Design. The Daiki Axis Johkasou STP design is very simple and easy to operate type.
- Guarantee. The production and operation are guaranteed by the Japanese government.
Types of Johkasou
- BMR-Based: When the treated water parameter requires very high discharge guidelines.
- MBBR-Based: Can be used to maintain standard discharge parameters.
ADVANTAGES OF DAIKI AXIS JOHKASOU STP
- No Daily Sludge: Daiki Axis Johkasou’s Accumulated sludge is so limited that it should be removed from the tank periodically (once every 6–12 months), depending on the situation
- No Noise: Daiki Axis Johkasou’s packaged technology operates silently, providing a noise-free solution. The noise level is less than 42 decibels (dB).
- No odor: Johkasou’s packaged technology ensures an odor-free system, enhancing user experience.
- Customized capacity: As per customers’ demand and site conditions, size can be customized.
- No need for an equalization tank: Daiki Axis Johkasou’s 1st chamber itself works as an equalization tank, so there is no need for an additional one.
- 1-Day Installation: Just connect inlet/outlet pipes and electric cables! It can be installed in 1 day if the site is prepared before.
- Shock flow control: The Johkasou separation chamber controls its shock flow.
- High treatment performance: Daiki Axis Johkasou-treated water complies with all kinds of discharge parameters set by DOE & ECR.
- Nitrogen Treatment: While traditional methods rely on chemicals for nitrogen treatment, Johkasou anaerobically decomposes organic matter. Which naturally produces ammonia through Denitrification (Nitric acid (Nitrate)is turned into nitrogen gas). so it controls the need for additional chemical usage and makes it cost-effective.
- 50% less energy cost: By gravity flow & only small blower air, water always flows inside Johkasou STP, and treated again and again, Johkasou requires 50% less energy.
- No need for operators: Unlike conventional wastewater treatment systems, Daiki Axis Johkasou does not require an operator to constantly monitor them.
- Quick Maintenance: The structure of the Johkasou is simple, and its equipment is user-friendly. Therefore, it is easy for operation & maintenance.
- Japanese government-certified product: All of the Johkasou
HOW DOES JOHKASOU STP REDUCE WATER POLLUTION?
Johkasou STP treats wastewater before releasing it. It removes harmful chemicals and solid waste. Clean water goes back into the environment safely. This reduces pollution in rivers and lakes. Johkasou helps protect aquatic life and ecosystems. It stops bad water from spreading. Treated water can be used again. Johkasou keeps our water sources clean. It’s good for people and nature too.
HOW AFFORDABLE IS JOHKASOU-STP FOR WASTEWATER MANAGEMENT?
Johkasou-STP is a budget-friendly choice for managing wastewater. It cleans water right where it is produced, avoiding the need for expensive pipes or big treatment systems. The system uses less energy, which helps save on electricity bills. Its strong and reliable design means fewer repairs, which lowers maintenance costs. Johkasou also allows water to be reused, which is especially helpful in areas with limited water. This makes it an affordable and eco-friendly way to handle wastewater effectively.
HISTORY & BACKGROUND OF SEWAGE TREATMENT PLANT
Water is absolutely necessary for the survival of all living things and one of the most essential sources of economic activities as well. But currently the world is facing a serious water problem due to population growth and economic development. One of water problems is water pollution. In areas where sewerage and Johkasou (STP) are not widely covered, human-waste and miscellaneous wastewater is discharged directly into rivers and the ocean. If this goes on, water will continue to be contaminated. “Johkasou(STP)”can contribute to the solution of these problems.
EMERGENCE OF WASTEWATER TREATMENT ISSUES IN JAPAN
During the Meiji Era (1868–1912), Japan faced severe epidemics caused by untreated sewage. To address this, a law was enacted in 1900 to improve sanitation, but it excluded proper treatment of human waste, leaving the problem unsolved. By the 1950s to 1970s, rapid economic growth brought unprecedented environmental pollution, including serious water contamination, which led to significant health problems known as “pollution diseases.
PROTECTING THE WATER ENVIRONMENT BY THE WIDESPREAD JOHKASOU(STP)
Since the 1950s, Japan has seen rapid economic growth, leading to increased demand for flush toilets. In areas without sewer systems, individual treatment septic tanks (Johkasou) were introduced to treat wastewater from toilets. Later, combined Johkasou systems were developed to treat both human waste and other wastewater, helping to solve the water pollution problem. Today, Johkasou continues to play a vital role in environmental protection and sanitation in Japan. Many regions worldwide still lack adequate wastewater treatment, and by installing Johkasou, we can help improve environmental conditions and contribute to a sustainable future.
BANGLADESH’S URGENT NEED FOR WASTEWATER TREATMENT
Bangladesh, with over 700 rivers, relies heavily on its waterways for livelihoods and ecosystems. However, rapid urbanization, industrial growth, and poor wastewater management have severely polluted rivers like the Buriganga, now biologically “dead,” and others such as the Shitalakhya, Turag, and Balu. Only about 405 rivers remain active, with many at risk due to pollution and encroachment. Immediate solutions, like Johkasou systems, are essential to protect rivers, restore aquatic life, and ensure safe wastewater discharge in compliance with DoE & ECR standards.
In Bangladesh, treating wastewater is a big problem. As cities grow and factories expand, more wastewater is being created, but there aren’t enough systems to clean it properly. This leads to dirty water polluting rivers and lakes, which is harmful to people and for the environment.
- Not Enough Treatment Plants: Bangladesh doesn’t have enough sewage treatment plant (STP) or water treatment plant (WTP) to clean the wastewater from homes and factories. Many cities don’t have proper systems, so dirty water often ends up in rivers and ponds without being treated.
- Factory Wastewater: Factories like textile and leather industries produce a lot of dirty water and gray water with harmful chemicals. Many factories don’t use effluent treatment plant (ETP) to clean this water before releasing it into the environment. This makes the water unsafe for fish, animals, and people.
- High Costs: Building and running treatment plants is expensive. Many towns and factories can’t afford modern systems, so they don’t treat their wastewater properly. But there also a technology name Johkasou STP is less costly than others which already discussed in previous.
- Weak Rules: Although there are laws to stop pollution, they are not enforced strictly. Many factories break the rules and release dirty water without treating it.
There are some rules in place for apartments and factories to manage wastewater. If everyone follows these rules, the amount of wastewater can be significantly reduced within a few years. Bangladesh needs more STP, WTP, and ETP to handle wastewater. The government should enforce laws better and support industries in building treatment systems. Teaching people about wastewater problems can also help. By working together, we can protect our water and environment for the future.
JOHKASOU: ADVANCED WASTEWATER TREATMENT SOLUTIONS FOR BANGLADESH
At Daiki Axis Bangladesh, we proudly offer advanced Japanese Johkasou technology—a revolutionary solution for domestic and industrial wastewater treatment. Johkasou in Japanese language means, ‘Purification tank.’ This proven wastewater treatment system has been developed and perfected in Japan over 56 years. Approved by the Japanese government, Johkasou systems currently treat over 26% of Japan’s sewage. With over 8 million units in Japan and millions more worldwide, Johkasou technology has a strong track record of transforming wastewater management on a global scale. As a fully owned subsidiary of Daiki Japan, we are dedicated to providing high-quality Johkasou systems to meet your wastewater treatment needs.
ARE YOU READY TO TRANSFORM YOUR WASTEWATER MANAGEMENT?
At Daiki Axis Bangladesh, we use Johkasou STP technology to provide easy and green ways to clean wastewater. Our system helps solve wastewater problems and keeps the environment safe by saving water and energy.
WHY YOU CHOOSE DAIKI AXIS BANGLADESH?
As a subsidiary of Daiki Japan, we bring the expertise and innovation of Japanese wastewater treatment technology to Bangladesh. Our commitment to quality ensures that each Johkasou system meets the specific needs of the Bangladeshi environment and supports a sustainable future. Contact with us today to find out how our smart wastewater solutions can work for you. Let’s work together for a cleaner, more sustainable future in Bangladesh!
UNIQUE 13 SALES POINT OF JOHKASOU STP.
WHERE CAN THE JOHKASOU WASTEWATER MANAGEMENT SYSTEM BE INSTALLED?
Apartment
Hospital
Hotel
Factories
Office
School
committed to the mission to “protect the environment and change the future," improve the lives of workers and contribute to the development of society by continuously developing as “eco-creation and development companies.
– Daiki Axis Bangladesh