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Water & waste treatment within The Maltese Islands. Waste treatment in Malta Inside the premises of the S t.Antnin project, a family park has been built on top of construction waste to reduce pollution and land usage. This also shows how waste can be used to our advantage.
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Waste treatment in Malta Inside the premises of the St.Antnin project, a family park has been built on top of construction waste to reduce pollution and land usage. This also shows how waste can be used to our advantage.
The process • Waste is managed and compressed inside tents, these tents have a machine called a Bailor which compresses waste and feeds/carries it to the next tent. • The sorters will ultimately pick up a specific material from the conveyor belt, which will later be compressed and sold.
Bays • Bays are large stores which contain machinery which compresses the material into blocks, they are sorted accordingly by the MRF standard • Glass is not sorted in this plant but paper and plastic are sorted by hand accordingly, but metal is managed by magnets
Plastic • Types of plastics: • PeT soft plastics such as soft drink bottles • hdpe hard plastic such as washing liquid container • Plastic is ultimately sold according to the market price of oil, this is because plastic’s main material is oil.
Private companies can deposit their recycable waste directly to this plant in which the companies will benefit from lower tariff fees.(20 euro charge for each ton) • Waste is mainly sold to these countries each buying specific type of recyclable waste : Portugal, India, China, Japan, Italy, UK.
Organic waste process • Organic waste is filtered from the rest of the waste and sifted . • After this process is completed it is then mixed with water(H2O). • Later on, this substance is broken down inside digestion tanks in which this substance is held there for 28 days.
This process helps to gain gas from organic waste, which can be used for fuel later on. • After the gas is extracted, the wet compound is separated from the solid waste and delivered to the sewage treatment plant. • The remaining solid compound which is now compost is mixed with rubble and quarry waste and eventually used for landscaping purposes.
The Institute of Water Technology was established in 1993 with the mandate to undertake research, development, investigation education and international exchange in the field of water related issues. • The Institute's primary objective is the development of the Corporation's workforce, but it also provides training facilities for the private sector.
Pembroke R. O. Plant • Pembroke Reverse Osmosis Plant is a 55,000 m3 per day seawater reverse osmosis plant. This plant was built in 1993. The process involves the use of very high pressures to enable the production of potable water from sea water. • Apart from the Pembroke R.O plant, there are two more found in GharLapsi and Cirkewwa.
Cirkewwa reverse osmosis GharLapsi reverse osmosis
Reverse Osmosis • Reverse-Osmosis is a process through which filtered seawater is forced under very high pressure against permeable membranes. • The membranes are so fine that they can filter out molecules, including salt and some bacteria, purifying the source water to potable standards. • Because of the Reverse-Osmosis system, usage of water remained the same, however because of the electricity reduction, this lead to the depletion of pollution and less water is being wasted. • Before they used to dispose the water in the sea but now only nitric acid is added instead of formaldehyde which is carcinogenic.
The new type of water filters used. The Previous type of filters used.
Groundwater extraction • Groundwater production, however, is not enough to meet demand which means that the Corporation has to convert seawater into high-purity drinking water in its three Reverse Osmosis plants at Pembroke, Cirkewwa and GharLapsi and blend it with groundwater. • Moreover, the underground water table, is affected by illegal extraction, causing its salinity to rise to unacceptable levels, which has forced the Water Services Corporation to increase Reverse Osmosis water production.
The WSC’s Wastewater Operations Unit operates and maintains a large network of gravity and pressure sewage mains throughout the Islands. • A comprehensive preventive maintenance program ensures that the sewer mains remain in proper working order thereby avoiding many problems before they occur.
