Through the earth’s water cycle, the planet’s fresh Water and Ocean are inextricably linked. Ninety-seven percent of the earth’s water is in the ocean and the ocean supplies almost all the water that falls on land as rain and snow. Of the 3% that is fresh water, two thirds are frozen, one-third is groundwater and a mere 0.3% remains as accessible surface water.
Of available renewable freshwater resources, about 54% is already appropriated by humanity for various uses – irrigated agriculture (70%), industry (22%) and domestic use (8%), and water withdrawals are projected by 2025 to increase by 50% and 18% in the developing and developed world, respectively.
Integrated Water Resources Management (IWRM), which incorporates issues of equity, efficiency and environment, is widely accepted as the path forward towards sustainable use of our precious water resources, but much remains to be done to put IWRM concepts into action.
Currently, just under 900 million people lack access to safe water and over 2.7 billion lack access to basic sanitation.
The impacts of low access to water and sanitation represent a substantial drag on socioeconomic development in many countries.
As much as 40% of the world oceans are considered as ‘heavily affected’ by human activities, including pollution, depleted fisheries, loss of coastal habitats such as coral reefs, mangroves and sea grasses, and by aquatic invasive species.
River Bank Filtration ( RBF)
Why RBF:
- surface water as a source for drinking water is gradually increasing.
- groundwater generally has the advantage of a good hygienic and consistent quality compared to surface water.
- abstraction of river bank filtrate enhances the infiltration of river water compared to the natural situation.
- RBF facilities helps towards a sustainable water resources management.
- Maximum flood proof RBF system by sufficient elevation
- RBF systems for potable water supply is a sustainable alternative to
- direct abstraction of surface water
- followed by constant conventional post-treatment
CALA CASA SL appoints Memeco NV Group Rochem
CALA CASA CALA CASA is a SPANISH-based company, a Designer and Promotor for Energy and Seawater Desalination solutions collaborating closely with experts in the fields of research, design, technology and construction management. The firm was founded in 1989.
Our company CALA CASA is linked with Memeco NV Group Rochem and their team of experts involved in Patents and a continuous and ongoing effort in distinctively labelling innovative water treatment concepts.
The business Line Water Technology offers the full range of design, engineering, construction and supervision for delivering domestic and industrial water treatment plants.
Water For Everybody
Safe drinking water for everybody
Solar – Nanofiltration 7.200 Liter per Day
CALA CASA Group
NANOFILTRATION
NF processes are currently preferred over traditional treatment methods for the following reasons:
- No chemicals required (aside from cleaning)
- Constant product quality regardless of feed quality
- Compact plant size
- Capable of exceeding regulatory standards of water quality, achieving 90–100% pathogen removal
The basic operating principle of nano-filtration uses a pressure induced separation of solutes from a solvent through a semi permeable membrane.
The CALA CASA GROUP Membrane Filtrator
The System is used to produce drinking water by membrane filters. The clean water is forced by the pump pressure to overflow the membrane filter. The membrane filter separates ions, macromolecular, solids, organic compounds, viruses, colloid, bacteria, etc. out of the raw water resulting a stream of drinking water of high purity. The separated impurities are returned with the retentate back to the source.
Structure of the system
The system consists of a membrane filter module, an electrically operated pump, and a reservoir for the drinking water. In addition, the system has sensor for the monitoring of fluid flow in the pump. The dry running of the pump is prevented by a flow switch. The system pumps the drinking water produced into a water tank which is equipped with level sensor for monitoring the liquid level.
The pump generates a fluid flow until the upper level sensor switch is reached. The drinking water can be taken until the pump is switched on by reaching the lower level sensor again. The pure water occurs as a result of pressure in the filter chamber through the membrane filter.
The system presented here requires a cross flow respectively of 300 l/h that automatically keep the membrane filter clean.
The SOLAR WATER PURIFICATION SYSTEM
A simple self-sufficient water treatment system into practice. The compact, mobile water treatment and desalination systems are powered using integrated hybrid solar . This means that there are virtually no boundaries to using this system anywhere in the world.
This system can run approximately 12 hours continuously using sunlight and 24 hrs with battery. This system will use a solar / battery powered 12 or 24 volt system to supply its primary power needs. Whenever the sun in shinning, the solar system will always be recharging the battery, even when the water treatment system is working. This system comes as a turn-key package. It is designed for easy installation.
It seems ironic, but in flood situations one of the first things to worry about is the supply of drinking water. Flood water, particularly the waters that inundate cities, carries disease and microbes that can lead to diarrhoea, malaria and other life-threatening infections.
To help citizens get drinking water during natural disasters, CALA CASA GROUP developed a portable water filtration unit. Named the Globe Solar Water System, the mobile unit will run on either solar power or batteries and can produce around 7000 liters of water per day. Key to the development of the unit is its Disc filtration System.
With global climate change making floods more frequent, countries that lay in floodplains or near sea level will have to begin developing the critical infrastructure to combat these events. The CALA CASA water filtration system is an excellent first step forward.