{"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><span style=\"color: #002e5d\">The most reliable treatment plant<\/span><\/h3>\n<p><span style=\"color: #000000\">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.     <\/span><\/p>\n<p><span style=\"color: #000000\">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. <\/span><\/p>\n<ul>\n<li><span style=\"color: #000000\">For the treatment of all domestic wastewater from one household (1\u20136 people)<\/span><\/li>\n<li><span style=\"color: #000000\">The most reliable treatment plant on the market<\/span><\/li>\n<li><span style=\"color: #000000\">Continuous process where water flows by gravity into the discharge sewer<\/span><\/li>\n<li><span style=\"color: #000000\">Sewer connection height as standard&lt; 75 cm, with extension piece&lt; Up to 125 cm<\/span><\/li>\n<li><span style=\"color: #000000\">Self-anchoring structure<\/span><\/li>\n<li><span style=\"color: #000000\">Compact size, integrated sedimentation tank and biofilter<\/span><\/li>\n<li><span style=\"color: #000000\">Corrosion-free tank made of high-quality homogeneous HD polyethylene casting<\/span><\/li>\n<li><span style=\"color: #000000\">CE marked<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #00a3e0\"><strong><a style=\"color: #00a3e0\" href=\"https:\/\/kauppa.vestelli.fi\/wp-content\/uploads\/sites\/4\/2025\/05\/IISI_S6_S10_Manuaali_FIN_2024.pdf\" target=\"_blank\" rel=\"noopener\">IISI S6\/S10 Installation, Operation and Maintenance Instructions<\/a> <\/strong><\/span><\/p>\n<p><span style=\"color: #00a3e0\"><strong><a style=\"color: #00a3e0\" href=\"https:\/\/kauppa.vestelli.fi\/wp-content\/uploads\/sites\/4\/2025\/05\/IISI-S6_leikkauspiirustus.pdf\" target=\"_blank\" rel=\"noopener\">IISI S6 sectional drawing (PDF)<\/a> <\/strong><\/span><\/p>\n<p><span style=\"color: #00a3e0\"><strong><a style=\"color: #00a3e0\" href=\"https:\/\/kauppa.vestelli.fi\/wp-content\/uploads\/sites\/4\/2025\/05\/IISI-S6-tuotekortti_2023.pdf\" target=\"_blank\" rel=\"noopener\">IISI S6 Product Card<\/a><\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"elementor-element elementor-element-4156a4f6 elementor-widget elementor-widget-text-editor\" data-id=\"4156a4f6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n<p><span style=\"color: #000000\"><strong>Delivery time<\/strong> : approx. <span data-sheets-value=\"{\"1\":2,\"2\":\"n. 3\u20137 arkip\u00e4iv\u00e4\u00e4\"}\" data-sheets-userformat=\"{\"2\":13311,\"3\":{\"1\":2,\"2\":\"0\",\"3\":1},\"4\":{\"1\":2,\"2\":11982760},\"5\":{\"1\":[{\"1\":2,\"2\":0,\"5\":{\"1\":2,\"2\":0}},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"6\":{\"1\":[{\"1\":2,\"2\":0,\"5\":{\"1\":2,\"2\":0}},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"7\":{\"1\":[{\"1\":2,\"2\":0,\"5\":{\"1\":2,\"2\":0}},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"8\":{\"1\":[{\"1\":2,\"2\":0,\"5\":{\"1\":2,\"2\":0}},{\"1\":0,\"2\":0,\"3\":3},{\"1\":1,\"2\":0,\"4\":1}]},\"9\":1,\"10\":1,\"11\":4,\"12\":0,\"15\":\"Oxygen\",\"16\":8}\">5\u20138<\/span> business days<\/span><\/p>\n<p><span style=\"color: #000000\"><strong>Delivery method<\/strong> : Home delivery. The shipment will be delivered to the delivery address provided by the customer. The shipping company will contact the customer and agree on a delivery time or a place where the shipment can be left safely.  <\/span><\/p>\n<p><span style=\"color: #000000\"><strong>Delivery area<\/strong> : The delivery area is the entire mainland of Finland, excluding the archipelago areas behind ferry and ferry connections. You can inquire about deliveries outside the delivery area from our customer service. <\/span><\/p>\n<p><span style=\"color: #000000\"><strong>Freight<\/strong> : \u20ac300<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>The product is sold and delivered <strong>by Avalon Nordic Oy<\/strong><\/p>\n<p><img decoding=\"async\" class=\"alignleft wp-image-885\" src=\"https:\/\/kauppa.vestelli.fi\/wp-content\/uploads\/sites\/4\/2025\/05\/avalon-nordic-logo_word-300x116.jpg\" alt=\"\" width=\"300\" height=\"116\"><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><em>Vestelli Oy has acquired the entire share capital of Avalon Nordic Oy. Read more: <a href=\"https:\/\/www.vestelli.fi\/blogi\/\">https:\/\/www.vestelli.fi\/blogi\/<\/a> <\/em><\/p>\n<\/div>\n<\/div>\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 v28.4 - 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=\"Delivery time : approx. 5\u20138 business days Delivery method : Home delivery. The shipment will be delivered to the delivery address provided by the customer. The shipping company will contact the customer and agree on a delivery time or a place where the shipment can be left safely.  Delivery area : The delivery area is the entire mainland of Finland, excluding the archipelago areas behind ferry and ferry connections. You can inquire about deliveries outside the delivery area from our customer service. Freight : \u20ac300 &nbsp; The product is sold and delivered by Avalon Nordic Oy &nbsp; &nbsp; &nbsp; &nbsp; Vestelli Oy has acquired the entire share capital of Avalon Nordic Oy. Read more: https:\/\/www.vestelli.fi\/blogi\/\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/en\/tuote\/small-treatment-plant-iisi-s6\/\" \/>\n<meta property=\"og:site_name\" content=\"Vestelli.fi\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-08T13:06:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2026\/03\/3626322-Pienpuhdistamo-IISI-S6_1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" 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