{"id":10660,"date":"2026-07-08T16:14:04","date_gmt":"2026-07-08T13:14:04","guid":{"rendered":"https:\/\/vestelli-fi.kehityspalvelin.fi\/its-cold-now-be-careful-about-the-functionality-of-your-wastewater-system-even-in-winter\/"},"modified":"2026-07-08T16:14:04","modified_gmt":"2026-07-08T13:14:04","slug":"its-cold-now-be-careful-about-the-functionality-of-your-wastewater-system-even-in-winter","status":"publish","type":"post","link":"https:\/\/vestelli-fi.kehityspalvelin.fi\/en\/its-cold-now-be-careful-about-the-functionality-of-your-wastewater-system-even-in-winter\/","title":{"rendered":"It&#8217;s cold now! Be careful about the functionality of your wastewater system even in winter"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Normally, warm water enters the wastewater system at regular intervals, and thus also in winter, warm water helps the wastewater system to stay unfrozen. The conditions become challenging when the wastewater system is not in use (e.g. in holiday homes or detached houses during the holiday season).<\/span> <span style=\"font-weight: 400;\">Therefore, wastewater systems should always be designed and tested so that they function even in the most demanding conditions. This means well-designed structures and insulation.<\/span><\/p>\n<p>Read how the Biopurifier performed in the winter test.<!--more--><\/p>\n<p><img decoding=\"async\" class=\"size-medium wp-image-115 aligncenter\" src=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2017\/12\/Picture3-193x300.png\" alt=\"\" width=\"193\" height=\"300\" srcset=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2017\/12\/Picture3-193x300.png 193w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2017\/12\/Picture3-103x160.png 103w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2017\/12\/Picture3.png 318w\" sizes=\"(max-width: 193px) 100vw, 193px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">The structure of Vestell&#8217;s Biopurifier is designed so that the air trapped between the hollow-structured lid provides insulation and in addition, the process section is further separated from the rest of the tank by insulating it with a completely sealed insulating intermediate lid. These solutions keep the product in working order even in the harshest winter conditions. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">We wanted to conduct a winter test in the most difficult conditions, so that we could demonstrate the functionality of the Biopurifier even in extreme conditions. We were looking for a location where the following would be true: the device would not be used during the test period, the air blower would be in winter storage, but the device would still have water inside. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Our customer Markku Holopainen uses a Vestell Biopurifier 3 for gray wastewater in his vacation home in Kylm\u00e4koski, and Markku&#8217;s vacation home was a perfect fit for our test, as it was known that the apartment would not be used during the winter of 2018. In addition, the water in the Biopurifier had been left in for the winter and the air fan had been raised indoors to warm up.   <\/span><\/p>\n<p><span style=\"font-weight: 400;\">In terms of winter use, this aforementioned situation is the most challenging for the wastewater system. We wanted to highlight facts about how the Biopurifier works in winter conditions. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">For the winter test, we installed two separate sensors in the Biopurifier and recorded the readings of the outdoor temperature.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The first sensor (Sensor 1) is located under the plastic cover and measures the soil temperature.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The second sensor (Sensor 2) is located in the surface water inside the Biopurifier, below the insulation intermediate cover and frost insulation. This measures the surface water temperature and indicates whether the water remains thawed under all conditions. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\" wp-image-861 aligncenter\" src=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4-300x147.png\" alt=\"\" width=\"633\" height=\"310\" srcset=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4-300x147.png 300w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4-600x293.png 600w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4-768x375.png 768w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4-1024x500.png 1024w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4-760x371.png 760w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4-160x78.png 160w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/L\u00e4mp\u00f6tilat-4.png 1136w\" sizes=\"(max-width: 633px) 100vw, 633px\" \/><\/p>\n<p style=\"text-align: center;\">Figure 1: Temperatures as a graph (13.12.2017-25.3.2018)<\/p>\n<p><span style=\"font-weight: 400;\">The test revealed that outdoor temperatures varied between +3.0 \u00b0C and -19.0 \u00b0C (Outdoor temperature \u2013 gray line), averaging -8.8 \u00b0C. The average temperature inside the ground drops to about -1.6 \u00b0C below freezing (sensor 1 \u2013 blue line), and at its coldest, the temperature rose to as low as -7.4 \u00b0C. The surface water inside the Biopurifier remains above freezing at all times, averaging about +1.6 \u00b0C (sensor 2 \u2013 orange line).  <\/span><\/p>\n<p style=\"text-align: left;\"><b>Winter test result:<\/b> Thanks to the bio-purifier&#8217;s insulating structure, the device remains fully operational during winter use, even in the most challenging conditions.<\/p>\n<p><img decoding=\"async\" class=\" wp-image-479 aligncenter\" src=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3-300x186.png\" alt=\"\" width=\"529\" height=\"328\" srcset=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3-300x186.png 300w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3-600x372.png 600w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3-768x476.png 768w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3-1024x635.png 1024w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3-760x471.png 760w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3-160x99.png 160w, https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2018\/02\/Vestellin-bio-3.png 1202w\" sizes=\"(max-width: 529px) 100vw, 529px\" \/><\/p>\n<p><b><i>Note:<\/i><\/b> <i><span style=\"font-weight: 400;\">During the installation phase, frost insulation (e.g. Finnfoam) is installed on the Bio Purifier against the installation level reserved for it, creating a seamless insulation structure. You don&#8217;t need to do anything else and you will get tested, worry-free winter use &#8211; even in extreme conditions.<\/span><\/i><\/p>\n<p>There are thousands of biopurifier products in different parts of Finland. Experience in cold and demanding climates can be found in Lapland, the northernmost arm of Finland. The biopurifier remains in working order in winter use even in the most challenging conditions.  <\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Normally, warm water enters the wastewater system at regular intervals, and thus also in winter, warm water helps the wastewater system to stay unfrozen. The conditions become challenging when the wastewater system is not in use (e.g. in holiday homes or detached houses during the holiday season). Therefore, wastewater systems should always be designed and&hellip;<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22],"tags":[],"class_list":["post-10660","post","type-post","status-publish","format-standard","hentry","category-blog-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>It&#039;s cold now! Be careful about the functionality of your wastewater system even in winter | Vestelli.fi<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"It&#039;s cold now! Be careful about the functionality of your wastewater system even in winter | Vestelli.fi\" \/>\n<meta property=\"og:description\" content=\"Normally, warm water enters the wastewater system at regular intervals, and thus also in winter, warm water helps the wastewater system to stay unfrozen. The conditions become challenging when the wastewater system is not in use (e.g. in holiday homes or detached houses during the holiday season). 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