Bay City Techno Co. Ltd has developed a
revolutionary system in processingcontaminated sea, river, lake, pond water.
fresh mineral water without using chemicals
processing unit or units can be delivered in containers or on trucks as a mobile unit
if in remote areas the electricity power is provided through solar panels and wind turbines
low energy consumption (rotary piston pump &RO membrane)
obtained drinking water can be bottled and put on the market as mineral water
Japanese process system
does not use chemicals
and isthe only process who can
treat contaminated/pollutedwater
mineral level quality water.
According to a 2007 World Health Organization report, 1.1 billion people lack access to an improved drinking water supply,88% of the 4 billion annual cases of diarrheal disease are attributed to unsafe water and inadequate sanitation and hygiene;and 1.8 million people die from diarrheal diseases each year. The WHO estimates that 94% of these diarrheal cases arepreventable through modifications to the environment, including access to safe water.
Bay City Techno Co. Ltd
company has found the solution
Development of a Compact and Easily Transported And Installed Water Purification Unit
A breakthrough water purification process and unit has been developed to bring good news to peopleliving in areas with a problematic water supply not only in Japan but also throughout the world. Thismobile water purification unit named the “Drinking Water Supply SystemDWSScan produce clean,safe water from seawater, river water or lake water in areas, which lack water supply infrastructure,areas, which suffer from a chronic water shortage due to droughtor other reasons and disaster hit, andother areas where a water shortage is being experienced. Japanese companyhas developed the DWSS.There are two types, One is the truck loading type which can be easily transported anywhere on a truckwhile the other is the container type which can be installed in a single day without foundation work. Bothtypes have been developed based on the concept that "the unit must be compact and readily transportedand installed”. In fact, the container type has two versions, I.e. 20 feet long and 40 feet long offeringdifferent storage capacities. The 40 feet version can produce 40tons of drinking water (1 ton is, 1000liters) from seawater. Assuming that one person requires five liters of water per day the version can meetthe daily water requirement of 8,000 people. If the srcinal water does not contain salt, the output of thisversion is doubled to 80 tons a day, serving 16,000 people.The DWSS uses a rotary piston pump, which produces high pressurewith littleelectricity. Power is independently generated using such eco-friendlypower-generating source like sunlight (PV power generation) or wind. CO2 orother unwanted gases are not produced. Bacillus Nattois used in pre-treatmentprocess prior to the filtration of the water by RO(reverse osmosis) membrane.The wastewater from the desalination process of seawater can be recycled.
To obtain fresh water from seawater by means of RO membrane filtration, very high pressure is requiredto push the seawater through the membrane. Conventionally, the pump generate such high pressureconsumes a lot of electricity. The rotary piston pump used for the DWSS is a type of small light weightpump and can efficiently generate high pressure with much less electricity. It is not easy to obtain thehigh pressure required for the desalination using ordinary pumpsand the amount of power consumptionis huge. Because the rotary piston pump has a smaller area to push, it can generate high pressure withless energy. The lower power consumption allows the use of an eco-friendly power generation systemconsisting of solar panels on the roof of the container or two small wind power turbines. The system cangenerate electricity 24 hours a day with the right conditions and can store the surplus electric energy.Because of this independent power generating system, the DWSS can be used anywhere in the world.Another characteristics of the DWSS is the use of bacillus nattoas the coagulant at the initial stage ofwater treatment. Prior to the filtration using a RO membrane there is a pre-treatment process of two-stepfiltration. The first step aims at separating the sludge components from the water and facilitating thesedimentation. Bacillus nattois used as the coagulant at this step. In the past ozone was used in the pre-treatment process but it was discovered that the use of Bacillusnattowould greatly improve theefficiency of the sludge component removal at the first step.
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