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BAŞİSKELE GÜBRETAŞ SECONDARY SCHOOL /ELİF KUŞCUOĞLU

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The students are diving into a great hands-on engineering! for a filtration-based water WE PREPARED

A Multi-Stage Bio-Filter

The students evaluated a gravity-fed filtration system designed to remove sediment and organic pollutants from a simulated runoff sample.

WE FOUND THAT ;

* Effective Retention: The vertical column successfully cleared the water's turbidity, specifically targeting larger debris like leaf litter and sand.

* Structural Success: The layering of activated charcoal was pivotal in neutralizing odors, while the coarse gravel provided a sturdy base that prevented the filter media from compacting too tightly.

* Trapping Efficiency: The fine-weave cloth at the outlet was highly effective at catching micro-sediments that bypassed the upper layers.

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This study highlights the critical role of sustainable land use in protecting groundwater resources. Additionally, the project aims to raise awareness about water pollution and promote environmental sustainability.

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Station 1: Water Desalination / Junior High School of Moudros, Lemnos GR / Christos Koukoumis, Zoi Partsia, Matina Stampoulidou, Theodora Lymperi 

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Station 1: Water Desalination / Junior High School of Moudros, Lemnos GR / Christos Koukoumis, Zoi Partsia, Matina Stampoulidou, Theodora Lymperi 

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Teacher Miguel Aljustrel, Chemystry teacher, carried out the water filtration as part of the "Science in the 1st Cycle" project..

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STATION ONE -  Water Scarcity Solutions Lab | Sand Filter

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STATION ONE -  Water Scarcity Solutions Lab | Sand Filter

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Our team modeled a sand/stones filter using reused plastic bottles to explore how people can improve water quality in dry regions with simple materials.

How it works
Dirty water is poured from the top and passes through different layers: mesh, gravel, sand and cloth/cotton. Each layer traps particles of different sizes, and gravity moves the water through the filter.

Results

The filtered water was visibly clearer than the original muddy water.

Large debris was stopped by the mesh and gravel.

Finer particles were retained by the sand and cloth layers.

The system works without electricity, only using gravity.

Limitations
The water looks cleaner but is not drinkable, because microorganisms and dissolved substances are not removed. The filter also needs cleaning after several uses.

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TEACHERS: Aglaia Mantzana, Agathi Anagnostou Students: Michaela, Vaggelis, Eleni, Panagiotis, Alexandra, Sofia 

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TEACHERS: Aglaia Mantzana, Agathi Anagnostou Students: Michaela, Vaggelis, Eleni, Panagiotis, Alexandra, Sofia 

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STATION ONE - COTTON AS WATER PURIFICATION MATERIAL

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STATION ONE - COTTON AS WATER PURIFICATION MATERIAL

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Team one prepares the wastewater for the desalination exploration with cotton as a filter.

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Team in station one uses waste water in a bottle with cotton to observe if the water will be partly desalinated. The water is cleaner but it is brown.

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In this STE(A)M activity, pupils designed and tested a simple water filter using a plastic bottle, cotton, sand and gravel. They built the filter in layers, poured dirty water through it and observed how the water became clearer. After testing, pupils discussed improvements and redesigned the filter, learning through trial and error. The activity helped them understand filtration, problem-solving and the engineering design process in a hands-on and collaborative way.

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We are starting the water cycle study and in March we will visit the local wastewater treatment plant - the Barreiro ETAR.

Teacher: Helena Pires

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Station 2: Pollution - Blocking Barrier / Junior High School of Moudros, Lemnos GR / Christos Koukoumis, Zoi Partsia, Matina Stampoulidou, Theodora Lymperi 

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Station 2: Pollution - Blocking Barrier / Junior High School of Moudros, Lemnos GR / Christos Koukoumis, Zoi Partsia, Matina Stampoulidou, Theodora Lymperi 

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Station 2 – Pollution-Blocking Barrier Challenge

Students built a floating barrier using corks, straws and mesh to stop trash in a mini-river.

most floating waste was successfully trapped.
What worked: corks kept the barrier floating and the mesh stopped small plastics.
What failed: some trash escaped from the sides.
Improvement: better side sealing and a V-shaped design to guide waste more effectively.

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STATION ONE - SAND AS WATER PURIFICATION METHOD

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STATION ONE - SAND AS WATER PURIFICATION METHOD

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TEAM two used sand as a desalination form and threw away the first water as it was slightly brown at first.

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Our local wastewater treatment plant, Portugal

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Our local wastewater treatment plant, Portugal

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Virtual visit to our local wastewater treatment plant

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Águas de Portugal | Virtual tour generated by Panotour

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A capacidade de planeamento e de execução, a experiência na gestão (Virtual tour generated by Panotour)

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Students created a short comic to raise awareness about water conservation. Through characters and everyday situations, they showed how small daily actions, such as turning off taps and using water responsibly, can make a big difference. The activity helped students combine creativity, environmental awareness and problem-solving skills.

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The materials used in bottle two

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The desalination methods and the results. The sand desalination method is more effective as the water is transparent and clean.

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Students exchange teams and they observe the results from using cotton and sand as desalination and water purification methods. They discuss about the effectiveness of sand as a method for purifying water and they are amazed by its water purification power. Water may not be drinkable as it might need other methods of purification as well, such as boiling or using water purification tablets.

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STATION TWO - materials for building a pollution barrier 

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STATION TWO - materials for building a pollution barrier 

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Students collected reusable material for building the water pollution barrier: a big plastic bowl, plastic caps, soil, thick cotton, and pipe cleaners.

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Aina, Olivia, Martí 1 and Martí 2 @ CEIP Na Caragol, Mallorca, Spain started designing a small river and a Trash Barrier. Teacher: Iolanda Carrillo Flores

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CEIP Na Caragol, Mallorca, Spain. STATION 2 Water Trash Barrier Testing. Teacher: Iolanda Carrillo Flores

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CEIP Na Caragol, Mallorca, Spain. STATION 2 Water Trash Barrier Testing. Teacher: Iolanda Carrillo Flores

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Aina, Olivia, Martí B, Martí M and Blai put their barrier design to the test. Check out the result!

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Leo, Lluís, Carme, Chloe, Júlia, Aina, Irene, Toni and Daniela are testing a Simple Desalination System based on the Water Cycle.

CEIP Na Caragol, Artà, Mallorca, Spain.

Teacher: Iolanda Carrillo Flores

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Station One Sand Filter Antalya Science Art Center

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Station One Sand Filter Antalya Science Art Center

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SAND FİLTER

In this activity, we created a sand filter using cotton, sand, and gravel. The gravel trapped large dirt particles, the sand filtered smaller particles, and the cotton helped make the water clearer. After filtration, the water looked cleaner and clearer, but it was not completely transparent. The best results were achieved when cotton and sand were used together. To improve the filter, more layers could be added, finer sand could be used, or different filter materials such as activated carbon could be tested. This activity helped us understand how water filtration works.

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STATION Two: The STEAM construction of the water pollution barrier

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STATION Two: The STEAM construction of the water pollution barrier

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What worked well: Students created the water pollution barrier and the construction was successful as the big objects were obstructed from entering the barrier.

Limitations: Soil, sand and tiny particles entered the water barrier.

Improvement: A thicker barrier might have better sealing effects for the small particles.