Does anyone have any available technology for treating wastewater generated from approx 10 households?
We are actively looking for these micro sewage treatment stations to be provided to remote areas.
To areas that are disconnected from any municipal network, especially in Africa and Asia.
The Solution should be economical from both a Capex and Opex standpoints and easy to install in existing buildings/homes. Looking forward to see what solution are available in the market. Share technology details as well, to check the feasibility of the technology.
Im interested in this question too. Its my view that distributed sewage treatment is the best way to provide sanitation and retain water in its natural catchment. However, in my experience any packaged treatment solution will benefit from a light-touch remote monitoring service via mobile wireless connection, the service will connect with an expert assiatant who will be able to guide and develop confidence witin the community beneffiting from the facility to understand why and how they should look after it. It wont come as a surprise to learn that we have developed such a capability on our WaterWorX platform.
Hello Laurent - there are many options available and best practices for evaluating them for site suitability, cost of installation and difficulty of O&M - email us if we can help?
Dear Laurent - I'm from Voltas Water Solutions, a JV between Dow & Voltas, part of the Tata Group. We do exactly such units for home & commercial use, and are today present in India and the subcontinent, with extended arms in Middle East & Africa.
Will be happy to connect and tell you more about these products, that are energy-efficient, odour-free and very easy to install, yet do not compromise on the outlet quality. Please reach out to vws@voltaswater.com and let's talk more.
Laurent, for the past 30 years the Hannah Family has been providing packaged fixed film wastewater systems that offer very low life cycle costs because they are easy to operate and extremely energy efficient. With more than 1000 systems shipped we’ve worked with remote Canadian First Nations communities as well as sites in Africa and the US as well as Central and South America. Feel free to contact me with your specific requirements and I'll do my best to help you david.mains@hannahequipment.com David
At Island Water Technologies we provide low-complexity, low-cost, solar powered solutions for domestic wastewater treatment. For more information see our websites below
Already very good suggestions have been offered. One that is still missing is known as ROOT ZONE TREATMENT. It works on the principle of pre treating sewage in a septic tank or Imhoff Tank and allowing the effluent to flow laterally through a natural or prepared bed of soil over which plants like reeds are planted on normal top soil. The roots of the plants and the soil removes organic matter from the effluent which comes out clean and odourless at the other end. It can be used for any purpose other than drinking.
In Package Sewage Treatment Plants for10 household, a modified septic tank as an alternative to a septic tank/fosse septique. The reasons being that despite having plenty of land in which you can install a new septic tank and vertical sand filter, If you do not want to use up too much land, because to use the land for building a new house in a couple of years time. Also sand filters that take the output of septic tanks can often clog up in only a few years, meaning you have to remove all the sand and have it replaced. The sand used in these filters is special filtration sand and quiet expensive.
Biological Wastewater systems from BioKube treat black and grey sewage water. The purified wastewater is safe to reuse. UV and after treatment remove E-coli and Nematodes. Main use is wastewater from villages, hotels, resorts, mines, oil camps and individual houses.
(More than 10,I think small village)
Small villages and remote communities often lack access to wastewater treatment plants with fully developed primary and secondary treatment capabilities. The design and development of new wastewater treatment plants for small communities and remote villages is time and resource intensive. Compared to other issues, wastewater is often seen as a secondary issue and access to funding is not always available or seen as to expensive for a small community.
Water sources are sometimes contaminated with organic or septic matter. Citizens may therefore be confronted with a decline of water quality, pollution of local lakes and rivers, resulting in higher costs for importing of drinking water.
Today, cost-effective small-scale sewage treatment plants for up to 50 inhabitants exist. Using a modular, turnkey construction system, the newest generation of small-scale community sewage treatment plants combines, multi-stage treatment systems and units such as:
· Sequencing-Batch-Reactor (SBR) Processing
· Membrane Reactor using Ultrafiltration
· Continuous-Batch-Reactor (CBR) Processing
· Short-Time-Batch-Reactor (STBR) Processing
· Biofilm Method using growth bodies from plastic
We have a Phyco-remediation solution to use the sewage to grow Diatom algae and fish.
If total wastewater flow from 10 households is about 5,000 liters per day ( sewage plus grey water), you would require a pond of about 150,000 liters ( 30 days storage / retention time). The pond can be 2 meters deep, so area would be 75 sq meters.
No equipment or power supply is required, so the pond can be close by or away from the households.
Pond need not be cemented, plastic sheet lining can be used if required.
Natural ponds too can be used.
Capex would be the cost of the pond, sewer pipe to the pond and pumping if required i.e., if gravity flow is not possible.
Land should not be a problem in remote area, so this type of solution may be best suited, rather than an engineered solution requiring power supply, etc.
Diatoms can be grown using our product Nualgi. 1 liter of Nualgi can treat 1 to 2 million liters of sewage, the total cost of Nualgi would be about $ 100 per liter.
If fish can be grown in the pond, the income from sale of fish would help recoup the cost and you may make a profit or the treated water can be used for irrigation.
This can be used together with other technologies, such as
septic tanks - the overflow can go into the ponds for final treatment ;
anaerobic treatment / biogas - the sludge can be put into the ponds to use the nutrients, N and P in the sludge.
The basic principle is that sewage is digested food and contains nutrients, N and P. These should be put to use to grow food, since sewage is mainly water, growing fish is the best solution.
If a technological solution is required then the best option is a Rotating Biological Contactor (RBC) but the best low tech answer is to use septic tanks. If the effluent requires further treatment then direct it to a reed bed and or pond. Always look for a natural solution before employing systems which require spares and maintenance.
This system can be modifyed to any fluid retention scale weather it be small,medium or large
We have designed a fluid retention device which can be used for large holding tanks, flood defence, land retention, aqueducts and we are in the process of designing a self sufficient desalination tank for warm countries by using solar panels, water turbines .
The system which we have designed is totally concrete free, can be installed on any terrain above ground, faster to install and requires minimal skill and machinery/plant.
Benefits of using Neptune's products No Concrete required - Up to 40% cheaper than concrete Situated above ground for easy access Fast installation Low maintenance Minimal ground preparation Environmentally friendly 95% recyclable. We use recycled products where possible. Will last over 75 years Cladding can be installed to imitate grass, stone or other landscape effects. Solar panels to be installed around the system, this would pay for itself in the long run and or to be used as a backup to generate electricity.
BOSAQ is specialized in MBR technology for remote and extreme areas. Our most remote/extreme area is Antarctica where we have designed and operate a small MBR for treating grey and black water from about 30-40 people for the Belgian 'zero'-emission station Princess Elisabeth. The water coming out of the reactor is reused in the system. Simplicity of the systems we provide is crucial as remote areas do not provide a way for easy maintenance and demand simplicity in design. The system in Antarctica is solely running on solar power and has a low capex cost. If you are interested please contact us at info@bosaq.com.