{"id":9885,"date":"2026-03-19T16:38:24","date_gmt":"2026-03-19T14:38:24","guid":{"rendered":"https:\/\/vestelli-fi.kehityspalvelin.fi\/tuote\/small-treatment-plant-iisi-s6\/"},"modified":"2026-07-08T16:06:01","modified_gmt":"2026-07-08T13:06:01","slug":"small-treatment-plant-iisi-s6","status":"publish","type":"product","link":"https:\/\/vestelli-fi.kehityspalvelin.fi\/en\/tuote\/small-treatment-plant-iisi-s6\/","title":{"rendered":"Small treatment plant IISI S6"},"content":{"rendered":"<h3>The most reliable treatment plant<\/h3>\n<p>IISI S6 cleans all domestic wastewater from one household (1\u20136 people). The IISI continuous treatment plant is the most reliable treatment plant on the market. It has one water recirculation pump that periodically circulates water to a biofilter, which cleans the wastewater biologically. Below the biofilter is a fixed 3-compartment sedimentation tank that effectively separates solids. Phosphorus is precipitated chemically. Water flows through the treatment plant by gravity.     <\/p>\n<p>The need for maintenance is minimal and the IISI treatment plant can withstand long periods of downtime very well and is also well suited for use in leisure properties. It is easy and quick to install and fits into a small area on the plot. <\/p>\n<ul>\n<li>For the treatment of all domestic wastewater from one household (1\u20136 people)<\/li>\n<li>The most reliable treatment plant on the market<\/li>\n<li>Continuous process where water flows by gravity into the discharge sewer<\/li>\n<li>Sewer connection height as standard&lt; 75 cm, with extension piece&lt; Up to 125 cm<\/li>\n<li>Self-anchoring structure<\/li>\n<li>Compact size, integrated sedimentation tank and biofilter<\/li>\n<li>Corrosion-free tank made of high-quality homogeneous HD polyethylene casting<\/li>\n<li>CE marked<\/li>\n<\/ul>\n<p><strong><a href=\"\/wp-content\/uploads\/2024\/12\/IISI_S6_S10_Manuaali_FIN_2024.pdf\" target=\"_blank\" rel=\"noopener\">IISI S6\/S10 Installation, Operation and Maintenance Instructions<\/a> <\/strong><\/p>\n<p><strong><a href=\"\/wp-content\/uploads\/2021\/08\/IISI-S6_leikkauspiirustus.pdf\" target=\"_blank\" rel=\"noopener\">IISI S6 sectional drawing (PDF)<\/a> <\/strong><\/p>\n<p><strong><a href=\"\/wp-content\/uploads\/2023\/02\/IISI-S6-tuotekortti_2023.pdf\" target=\"_blank\" rel=\"noopener\">IISI S6 Product Card<\/a><\/strong><\/p>\n<p>The product is sold and delivered <strong>by Avalon Nordic Oy<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-avalon-nordic-logo\" src=\"\/wp-content\/uploads\/2026\/03\/avalon-nordic-logo_word-300x116.jpg\" alt=\"Avalon Nordic\" width=\"300\" height=\"116\"><\/p>\n<p><em>Vestelli Oy has acquired the entire share capital of Avalon Nordic Oy. <a href=\"\/en\/vestelli-oy-press-release-vestelli-oy-and-avalon-nordic-oy-join-forces\/\">Read more about the acquisition<\/a> <\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>IISI S6 cleans all domestic wastewater from one household (1\u20136 people). The IISI continuous treatment plant is the most reliable treatment plant on the market. It has one water recirculation pump that periodically circulates water to a biofilter, which cleans the wastewater biologically. Below the biofilter is a fixed 3-compartment sedimentation tank that effectively separates solids. Phosphorus is precipitated chemically. Water flows through the treatment plant by gravity.<\/p>\n","protected":false},"featured_media":9887,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[130,136],"product_tag":[],"class_list":["post-9885","product","type-product","status-publish","has-post-thumbnail","product_cat-small-treatment-plants","product_cat-wastewater-treatment-systems","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Small treatment plant IISI S6 | 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=\"Small treatment plant IISI S6 | Vestelli.fi\" \/>\n<meta property=\"og:description\" content=\"IISI S6 cleans all domestic wastewater from one household (1\u20136 people). The IISI continuous treatment plant is the most reliable treatment plant on the market. It has one water recirculation pump that periodically circulates water to a biofilter, which cleans the wastewater biologically. Below the biofilter is a fixed 3-compartment sedimentation tank that effectively separates solids. Phosphorus is precipitated chemically. 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