Conceivable applications

Non-Electric SIPHON TANK (NEST) can consistently produce high quality filtered water without replacing filter media. High quality filtered water would be available for drinking, industrial use and emergency.

This is achieved by our patented technology, so-called ‘Siphon Washing Technology’. This technology creates twin vertical and horizontal vortices that cause sand particles to be kneaded each other in a three-dimensional washing action to remove hard sludge layer on the surface of particles.
In addition, NEST can operate without use of electricity. This equipment will enable to access to safe water even in areas where electricity is not supplied.

Competitive advantages

1. Movable for emergency and disaster areas
Non-Electric SIPHON TANK is easy to transport and is simple to operate. Since it is portable unit, it can be installed anywhere and anytime to provide clean water.

2. No need for filter media replacement
Filter media can be used semi-permanently without replacement, because of Siphon Washing Technology. Therefore, there is no need to dispose used filter media as industrial waste. SHIPON TANK is “earth-friendly” filtration device that significantly contributes to a response to ISO14000.

3. Amount of backwashing water can be dramatically reduced
Since MST efficiently removes suspended substances by Siphon Washing Technology and conducts backwashing only for rinsing away the suspended substances, the amount of backwashing water can be significantly reduced, compared with the conventional sand filtration devices.

4. Prevention of fixation of filter media
When sewage and water with high content of organic matters are treated by the conventional filter tanks, filter media usually cannot filter and may stop functioning properly. However, MOBILE SIPHON TANK can prevent the fixation and keep media always in a clean condition by our Siphon Washing Technology (washing is conducted for only 1 minute in every single day.

Performance

NEST can be used as a backup unit in emergency (i.e. natural disaster) during a power failure when water purification facilities are damaged and the operation is stopped by the disaster.
Also, NEST has made a huge contribution to non-polluting and zero-emission equipment development, because it does not need any electrical resources to operate.

Technical maturity / Past record of introduction

Nihon Genryo conducted a formulation survey to explore the possibility of sustainable drinking water supply in Niassa of the northern part of Mozambique in 2013. With Next, this project conducted hearing investigations in 3 provinces and also conducted pilot demonstrations in 4 places. Result of the demonstrations shows that NEST can significantly reduce turbidity of raw water. The quantitative results are as shown below;

Lake water             From 10.9 NTU to 0.58 NTU
River water             From 11.0 NTU to 0.91 NTU
Spring water           From 7.25 NTU to 0.80 NTU
Shallow well water  From 297 NTU to 0.43 NTU

Conceivable risk

The following materials have to be removed in advance, because surface water is preferable as raw water for the device, such as river, spring and lake water;

– Agricultural chemicals
– Heavy Metals
– Fluorine
– Sea water

Information on patent related to this technology

“Siphon Washing Technology” has patents in 33 countries.
(Ex: Japanese patent No. 3020452, 3020464, 3919098 and so on)

Modality of business transaction

Partnership
We are looking for business partners which specializes in the field of water treatment and/or assembly.

Export of product
We would like to sell our products directly or through distributors.

1. Introduction of Non-Electric Siphon Tank

2. Water Turbidity Treated by Non-Electric Siphon Tank