Russian scientists design drinking water treatment plant for arctic settlements – science & space

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NOVOSIBIRSK, June 24. / TASS /. Experts from the Novosibirsk State University of Architecture and Civil Engineering (“Sibstrin”) have produced a compact, block-modulated drinking water treatment plant for remote Arctic settlements. By using it, arctic regions will be able to solve the problem of access to drinking water, which is currently transported to many regions, Professor Evgeny Voitov told TASS.

Drinking water is a big problem in the Russian arctic regions. The Arkhangelsk region is among the regions with the most problematic sources of drinking water, the National Accounts Chamber said, adding that residents of small, hard-to-reach settlements suffer the most.

“Our product is a compact potable water treatment system, which can be installed in shiftworker towns in the Arctic. It can be used by personnel and visitors to Northern Sea Route destinations, border areas, ”the scientist said. “We are aware of the water problems there, but traditional treatment approaches are not sufficient for these areas.”

According to him, such systems can be transported easily by any means of transport available in the Arctic: land, sea or air.

Vitaly Vasilyev, general manager of the Rosa (“dew”) company in Novosibirsk, which manufactures and serves the Sibstrin water treatment systems, said such systems have been installed in the 14 settlements in Yakutia and in Dikson (Krasnoyarsk region). The company produces the systems in an industrial-logistics park near Novosibirsk.

The company, he explained, makes the system so that anyone can maintain it. “Of course, it all depends on the state of the water there and for what purpose it will be treated. Thus, we use an appropriate mode. [of treatment]. The most effective treatment is electrochemical treatment – this is what we used in Yakutia. In this case, you only need a mild saline solution and about an hour to instruct a user, ”he told TASS.

The company is currently working on a new block-module station for an arctic city. The work will be completed in August and the station will be commissioned in September.

Processing technology

The development is based on a three-stage water purification technology, invented and patented by the specialists at Sibstrin. First, the initial river or groundwater is electrocoagulated and aluminum hydroxide flakes form in it. They absorb impurities. After that, the purified water enters the clarifier reactor loaded with fine-grained sand. The clarifier is a tank for cleaning coarse substances – corrosion products, aluminum suspensions and impurities formed in the fine-grained suspended layer. In the third stage, the water is treated through special filters with active granular materials (for example, activated burnt rock or charcoal. After passing through them, the water is finally purified). After disinfection, the water can be used for cooking and drinking.

“In the clarifiers, the cleaning is done from the bottom up, and in addition, we have a loading layer expanded at 12%. In this way, we eliminate the non-functional, so-called dead, areas where the loading grains come into contact. Any observer will think that the sand does not move, its grains do not move chaotically, as happens in the backwashing process, but it is an efficient filtration process in a stationary layer. let’s increase dirt capacity, ie time Using this technology, we increase filtration speed and productivity by half compared to conventional filters, ”said Voitov.

With increased filtration speed and reduced unit size, it can be placed inside a modular unit to be transported to hard-to-reach northern areas. In particular, it is not necessary to deliver reagents to the North for the chemical coagulation of water.

At the same time, Sibstrin scientists recommend innovative technologies for the manufacture of filter fillings. Currently, quartz sand is used in filters. This sand is mined in the mountain crystal pit of the Sverdlovsk region. However, the extraction of this material is very expensive.

“We recommend a new filter material – the so-called burnt rock. It is the rock that is formed by the natural underground firing of inter-carbon inclusions – sandstone, clay,” explained the scientist.

Such rocks are mined in the Kiselevsk of Kuzbass. They have many technological advantages and are still a new material for filters. “In addition, we have developed a new filter material based on burnt rock -” active pink sand “, which replaces expensive imported materials for reagentless water purification from iron, manganese and others. heavy metals, “he concluded.

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