Clean water filter device from rice husk

Engineer Luong Van To, born in 1939, in Hai Duong, there was an initiative to make the device to filter water from rice husk material by separating silicon oxide (SiO ₂ ) from rice husk to create high-quality porous porcelain, making products. pure water.

Water filter for his family To be used is a small, white, cylindrical porous ceramic filter in a plastic food filter jar mounted on the wall. Mr. To said, this device can filter river and lake water into clean water with a filtration rate of 0.7 liters / minute, pressure of pumping water reaches 3 liters / minute. This clean water has no side effects due to the use of chemicals, ensuring the ability to kill bacteria (within a 12-month warranty period), keeping trace elements beneficial to the body in natural water sources.

The device also has the ability to deodorize the polluted water source, remove dioxin when connecting a filter bottle with activated carbon filter.

The idea of ​​equipment came into existence in 1993, when he was an engineer in the Department of Air Conditioning and Thermal Equipment, Hanoi University of Technology was sent to India to study a new Energy class. Here, he registered the topic of using rice husks to get activated carbon. In 10 years since 1994, when the topic was accepted and appreciated at the time of studying in India, he continued to study documents of the world about rice husk and made thousands of experiments with this material. to get SiO ₂ to make high quality porous porcelain.

In order to check the effectiveness and safety of the water purification device for his manufacture, Hai Duong Preventive Medical Center has taken water samples from Bach Dang lake, a heavily polluted place in Hai Duong city to handle through your filtering device. The results showed that the treated lake water meets hygiene standards for microbiological criteria.

Mr. To said, the type of porous porcelain he made has high durability (can be used 10 to 20 years) and the micro-filter hole, smaller than the filter hole of American equipment 10 times, of Japan 4 times. The product cost is VND 220,000 / device, and can replace the filter core for only VND 70,000 / core. On the other hand, the maintenance of the filter core is quite simple, just use a clean cloth or a clean washcloth as a white filter, with the original filter speed. Meanwhile, with the capacity of water filtration, US and Japanese core products are being sold on the market at a price of up to 1.6 million VND but 6 months have to be replaced or cleaned very successfully.

He also said that during the Hai Duong Technical Innovation Contest in 2006, his product won the second prize (without first prize) and he continued to bring products to participate in the national competition.