Water for life

 

Water for life is a proposed joint venture between Sweden and Freetown, Sierra Leone. The intention is in providing an existing high-quality water filtration solution to the existing water supply (Nobody drinks direct from the tap) and the elimination of plastic water drinking bags.


The Sierra Leone Government is desperately seeking a sustainable solution to these issues, primarily in Freetown. We are privileged to have the former Vice President of Sierra Leone, Mr Andrew Tuary as the project’s political liaison agent.


We intend to offer internships in cooperation funded via SIDA under the “Minor Field Studies” programme. focusing on recruiting from groups in Sweden and Sierra Leone, who are restricted by health and/or have limited access to the employment markets. last but not least, seek out other market opportunities and projects which are sustainable, inclusive and delivered within an ethical framework.


A “Feasibility study and SWOT analysis” has been completed and funded at a cost of 130000SEK

Three reasons why ACT® is the sustainable choice for your household


Thanks to its low operating costs and long lifetime, ACT® is economical in the long-run.

The value of your property increases with a sustainable bio-treatment plant.

No costly chemicals or service needed.


How does it work?



ACT® treats the wastewater (graywater and blackwater) in one to three steps depending on your needs and the circumstances at your property.

In the first step called ProACT®, sludge is being degraded by microorganisms. Thanks to structures in the tank, there is a lot of surface for microorganisms to grow on. The oxygen level in the tank is low. This results in degradation of the sludge and minimizes the need of emptying the tank.




After being treated in the ProACT® the sewage is pumped gradually to the next main step of the system, InterACT®. Here, the wastewater is exposed to an even higher amounts of microorganisms and to natural aquatic plants which contributes with even more biological surface for the microorganisms to grow on. The plants as well as the microorganisms feed on nutrients in the wastewater. Since the plants in turn nourish a variety of insects, ACT® takes part in a natural ecological cycle and actively contributes to increased biodiversity.



In some cases, an additional treatment step, ReACT®, is required to achieve extra reduction of phosphorus. In ReACT® phosphorus is bound in a filter material consisting mainly of lime. When the filter material is saturated with phosphorus it can be returned to the ecological cycle as a fertilizer on farmland.

ACT® is a very robust system requiring electricity only to power a water pump and an air pump. A micro-computer of industrial quality together with a static level meter in the ProACT® ensures stable operation and monitoring of the system.


ACT NaturalTM – a natural way to treat wastewater

ACT NaturalTM is designed to as far as possible imitate nature ́s own way of purifying wastewater. This means, among other things, that the system does not require any addition of chemicals. Instead, the system uses natural microorganisms and aquatic plants.


Ecological and Sustainable

ACT NaturalTM meets the authorities’ requirements on water purification, has a low level of energy consumption, and uses no chemicals. Above all this, the system takes part in a natural ecological cycle and by bringing nutrients back into the food chain, actively contributes to increased biodiversity.


Easy and very reliable

Unlike conventional wastewater systems ACT NaturalTM requires no sludge removals. In the initial ProACTTM the sludge is instead degraded into a form that can be treated by the micro-organisms and the plants in the system.

There is no need for replenishing of chemicals and very limited supervision of the system is required. The fact that ACT NaturalTM contains only very few moving parts secures the system’s efficiency and reliability.


Technical description

The ACT NaturalTM system treats wastewater (i.e. gray- water + blackwater) in two main steps, combined with one of two alternative steps to achieve additional phosphorus reduction.


ProACTTM

In the first step the wastewater is treated in an oxygen- free process. Here, the organic matter is dissolved. Then, the wastewater is led to a separate chamber where the dissolved organic matter is exposed to a large amounts of microorganisms in a bio-bed culture. The water is then transported to a distribution well mounted in the center and exposed to a second bio-bed. In this way the ProACTTM reduces the sewage sludge biologically instead of separating it for eventual sludge removals. This is one of several unique qualities in the ACT NaturalTM system.


Outlet



Recirculation to ProACTTM Tank



Inlet

InterACTTM


Recirculation from InterACTTM Tank

From the outlet of the InterACTTM, a part of the purified water is led back to the ProACTTM to enhance the nitrogen removal. Through this recirculation of the treated water, the nitrates are further reduced to gaseous nitrogen in the oxygen-free environment of the ProACTTM. In the two main steps ProACTTM and InterACTTM organic matters and nitrogen is treated at a purification level that meets the strict requirements on wastewater treatment from the Swedish authorities.


ReACTTM

A certain reduction of phosphorus is taking place in the two main steps. However, if an enhanced reduction of phosphorus is essential, the specific “phosphorus-trap” ReACTTM is recommended. ReACTTM consists of a tank containing a natural phosphorus-adsorbing material Polonite®. ReACTTM guarantees a phosphorus-reduction of at least 90 %.

After the phosphorus is accumulated in ReACTTM it is fully recyclable from the material and can be used to cultivate your fields!



FlorActTM

As an alternative to ReACTTM regarding enhanced phosphorus-reduction, we offer an after-treatment through a bed of plants, FlorACTTM, built as shallow pond with bio-beds and aquatic plants.

Control System

The ACT NaturalTM system is controlled by a micro- computer. This device contains everything needed to control and monitor the system and in case of an abnormal condition it generates an alarm.

After being treated in the ProACTTM the sewage is pumped gradually to the next main step, the InterACTTM. Here the water is exposed to an aerobic process where circulation is ensured through an air pump that creates a natural swirled water flow (Vortex flow) while the water is optimally oxygenated. Since the organic matter is lighter than water, it rises and is exposed to another bio-bed. The microorganisms in the bio-bed convert the organic matter into plant available nutrients. On top of the bio-bed there is a bed of plants consisting of a specific set of aquatic plants that through its roots absorb nutrients.

The water is then transported to a distribution well in the centre of the tank, where it passes through a second bio-bed. On top of this there is a layer of Leca balls and plants. Together with the bio-bed these plants account for another step in the biological purification process.


Acquiring a new sewage treatment system

When upgrading your onsite sewage water treatment, there are several things to consider. As a property owner, it is not always easy to understand what applies in your municipality and how the installation works. We will guide you through three important steps you must go through. Thereafter, your biological sewage water treatment is ready for use and you can expect a high purification rate for decades. 


Step 1: Purification demands
The purification demands depend on the distance to sensitive water streams and the type of soil you have on your property. If you do not already know what demands applies to your property, we can find it out for you.


Step 2: Get permission
Before installing a new sewage water treatment you need permission from the authorities. We gladly assist you in filling out the application form.

Step 3: Installation

We are happy to visit you in order to advice you regarding the best solution for your property