:

Domestic wastewater contains both solid and dissolved pollutants including faecal matter, paper, urine, sanitary items, food residues and a variety of other contaminants. The sewer network usually receives wastewaters from office and commercial properties and from industrial premises. Rainwater from roofs and roads may also drain into the sewer network. 

The combined flow from these various sources travels through the sewer system and ultimately to a ‘sewage works’ where it receives treatment before discharge of the treated effluent to a stream, river, estuary or the sea.

Collecting and treating wastewater has been even more beneficial to human health than the health service because it stopped water-borne diseases such as cholera and typhoid.Treatment of sewage is essential to ensure that the receiving water into which the effluent is ultimately discharged is not significantly polluted. 

That is why, we realize a great important of sewage treatment plants. We decided to visit the sewage treatment plants in our neighbourhoods to compare the proecess of sewage treatment in our countries as well as to get to know the process of cleansing sewage works.

If you want to know something more about it, take a short tour with us:

In Poland:

In Germany

Sewage Treatment Plant in Germany by etwinning

In Spain

we visited the Hidalgo Sewage Treatment Plant

http://www.teidagua.es/ESP/26_1047.asp

WAYS OF WATER PURIFICATION

A visit to the Voivodship Inspectorate of Environment Protection in Katowice, the Częstochowa Branch

During the visit we had the opportunity to visit chemical and biological laboratories. We took samples of water from three sources (school faucet, the main spring of the Warta River and the second spring of the Warta River near our school). We conducted tests of all the three samples for electrolytic conductivity and pH. The results will be used to analysis conducted at the school. We also got to know the specificity of work in the laboratories as well as the equipment used there.

COLLABORATIVE WORK TO BUILD THE WATER ROBOT:

We constructed a robot to measure the quality of water, its transparency, sonic, colour and temaperature. It is very important for the oxygen in the water which is essential for the functioning of aquatic organisms and life. Oxygen dissolved in the water comes from the atmosphere and photosynthesis done by plants with the participation of light. Oxygen also plays a key role in natural water purification processes.

Our robot is able to measure the level of oxygen and check water quality so that appropriate steps can be taken to maintain a good quality of water. We also specially programmed the robot and steered it to receive the needed data.

We have sent the instructions to construct the robot from Germany to Poland, from Poland to Spain and from Spain to Germany. We used Lego Digital Designer to follow the steps sent by the partners. We programmed the robot to be able to get the data which we needed to check the qualiy of water. We used smartphones to steer our robot.

Our task: Bricks for the robot.Developing modules for sensors. With all the modules we will have the same robot. LXF files for Lego designer only. Use the different views.

Steps in Lego Digital Designer:

Take a look at the results of our work:

In Germany:

In Poland:

In Spain

Spanish students designed three robtos. An Arduino robot is to measure the temperature of the water for diabetic people. Its sensors ( acoustic and visual ones) prevent them from being burnt. Diabetics can't feel when the temperature is too hot. The second robot is to measure the light in the sea. If you are sinking without realising it is getting darker and darker, the Arduino Robot sensors warn you with light and sound. They measure the sunlight in the water.  The last robot is looking for water in African desert.

3D PHYSICS SIMULATOR  - GOLEMS

With the usage of exceeding the educational standards physics simulation 3D programme -golems, we created robots used to purify water.

This robot is specifically designed to protect the aquatic environment. It is equipped with pumps - sponges that filter out contaminated water and a neutralizer of bacteria and germs, so that it can protect people from all diseases. It also has a clarifier that gives water a crystalline colour, and a bubbler that by producing bubbles of high boiling point prepares the water to be directly drunk from seas, lakes and oceans. It also has the absorber of dirt, which  sucks all the dirt both from the seabed and water surface. This robot is actually designed to clean water that is necessary for life.

Aquatic robot from eTwinning on Vimeo.

Our robot moves on water powered by flames of fire. It helps to clean up rubbish from the water, pulling them into a special container. The vehicle can be used to purify water reservoirs and tanks. So as to it is very helpful in environment protection.

Purifying robot przez kukjustina

WATERBORNE DISEASES

We are deepening our knowledge about "waterborne diseases", especially Typhoid Fever. it's evident that there are the best beaches and water from aquifers, springs... in Canary Islands and rivers in Poland and Germany, but if we pollute them , they will become harmful for our health. We should be careful when we drink contaminated water from a pond, etc. Typhoid Fever is an infection due to Salmonella typhi bacterium, which is caught by Ingestion of water contaminated with feces of an infected person and the symptoms are sustained fever up to 40 °C (104 °F), profuse sweating; diarrhea and delirium. If it lasts four weeks, it can affect your liver and cause your death. People who suffer from Typhoid Fever sometimes develop a rash called "rose spots", small red spots on their abdomen and chest.

Our first steps in programming in Scratch