{"id":3495,"date":"2026-03-30T21:55:50","date_gmt":"2026-03-30T19:55:50","guid":{"rendered":"https:\/\/janisch-schulz.com\/kleinklaeranlagen\/"},"modified":"2026-04-01T16:17:24","modified_gmt":"2026-04-01T14:17:24","slug":"nature-based","status":"publish","type":"post","link":"https:\/\/janisch-schulz.com\/en\/nature-based\/","title":{"rendered":"Nature-based outperforms technology"},"content":{"rendered":"<div  class='flex_column av-74esnr-5cf7bd65e938da5602e4c63006b2bbd8 av_one_fourth  avia-builder-el-0  el_before_av_three_fourth  avia-builder-el-first  first flex_column_div  '     ><\/div>\n<div  class='flex_column av-5cpmnb-4a4d7930c19fab142c06187486b667dc av_three_fourth  avia-builder-el-1  el_after_av_one_fourth  avia-builder-el-last  flex_column_div  '     ><section  class='av_textblock_section av-4uhrjb-8c14e5fe68b1ecdf9170b01f1ff882dd '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h2 data-section-id=\"10xn957\" data-start=\"64\" data-end=\"93\">Nature-based outperforms technology<\/h2>\n<h3 data-section-id=\"lsvdbp\" data-start=\"94\" data-end=\"179\">Why constructed wetlands lead in performance and operational reliability<\/h3>\n<p data-start=\"181\" data-end=\"759\">Constructed wetlands are among the most effective systems for decentralized wastewater treatment. In addition to very good effluent quality, they are particularly characterized by high process stability and above-average reliability in complying with regulatory limit values. A solid basis for this is provided by the <a href=\"https:\/\/www.wasser.sachsen.de\/download\/KKAAbschlussbericht.pdf\">study \u201cOperational and performance efficiency of fully biological small wastewater treatment plants up to 50 PE\u201d<\/a> (German, BDZ, IWS 2014), conducted with the participation of the Leipzig University of Applied Sciences, which comparatively evaluated different plant types.<\/p>\n<\/div><\/section><br \/>\n<div  class='av-post-metadata-container av-lwayue2x-c695518714a09cf0b0936b8b5d440b7f av-metadata-container-align-left  avia-builder-el-3  el_after_av_textblock  el_before_av_post_metadata  av-metadata-container-1'><div class='av-post-metadata-container-inner'><span class=\"av-post-metadata-content av-post-metadata-meta-content\"><span class=\"av-post-metadata-content av-post-metadata-author\"  itemprop=\"author\" ><span class=\"av-metadata-before av-metadata-before-author\">von<\/span><span class=\"av-post-metadata-author-link\" ><a href=\"https:\/\/janisch-schulz.com\/en\/author\/manu\/\"  rel=\"author\">Manuel Schmelzle<\/a><\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\">\/<\/span><span class=\"av-post-metadata-content av-post-metadata-published time\"><span class=\"av-post-metadata-published time-date\" >30. March 2026 21:55<\/span><\/span><\/span><\/div><\/div><br \/>\n<div  class='av-post-metadata-container av-lwaywp9s-06bd6d9277a229caecbe0ee624491bd5 av-metadata-container-align-left  avia-builder-el-4  el_after_av_post_metadata  el_before_av_image  av-metadata-container-2'><div class='av-post-metadata-container-inner'><span class=\"av-post-metadata-content av-post-metadata-meta-content\"><span class=\"av-post-metadata-content av-post-metadata-category\"><span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/janisch-schulz.com\/en\/constructed-wetlands\/\" >Constructed Wetlands<\/a><\/span>, <span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/janisch-schulz.com\/en\/domesticwastewater\/\" >Domestic Wastewater<\/a><\/span>, <span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/janisch-schulz.com\/en\/naturebasedsolutions\/\" >Nature-based solutions<\/a><\/span><\/span><\/span><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mluunmqv-a3b9bacc7c52b77cf5db4b3f4233f59b\">\n.avia-image-container.av-mluunmqv-a3b9bacc7c52b77cf5db4b3f4233f59b img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-mluunmqv-a3b9bacc7c52b77cf5db4b3f4233f59b .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-mluunmqv-a3b9bacc7c52b77cf5db4b3f4233f59b av-styling- avia-align-center  avia-builder-el-5  el_after_av_post_metadata  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3459 avia-img-lazy-loading-not-3459 avia_image ' src=\"https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/2017-leipzig-kka-abschlussbericht-csb-literatur.png\" alt='' title='2017-leipzig-kka-abschlussbericht-csb-literatur'  height=\"821\" width=\"1252\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/2017-leipzig-kka-abschlussbericht-csb-literatur.png 1252w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/2017-leipzig-kka-abschlussbericht-csb-literatur-300x197.png 300w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/2017-leipzig-kka-abschlussbericht-csb-literatur-1030x675.png 1030w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/2017-leipzig-kka-abschlussbericht-csb-literatur-768x504.png 768w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/2017-leipzig-kka-abschlussbericht-csb-literatur-705x462.png 705w\" sizes=\"(max-width: 1252px) 100vw, 1252px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-mndlpso7-49eab68e02313eda070ac1293f50c06d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><em>Figure: mean COD in treated wastewater outflows by treament type<\/em><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-2lbrqj-395592430543c79fe600c1683897ce80 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3 data-section-id=\"1ndy7b2\" data-start=\"761\" data-end=\"807\"><\/h3>\n<h3 data-section-id=\"1ndy7b2\" data-start=\"761\" data-end=\"807\">Effluent quality is consistently high.<\/h3>\n<p data-start=\"738\" data-end=\"1254\">The results show that constructed wetlands achieve the best effluent values, particularly for chemical oxygen demand (COD). Not only is the median of the measured values low, but the variability is also small. Particularly noteworthy are the results demonstrating that high treatment performance is reliably achieved even under unfavorable operating conditions. Thus, constructed wetlands not only deliver good average results but also ensure effluent quality during peak loads and non-steady-state operating phases.<\/p>\n<p data-start=\"1256\" data-end=\"1621\">A key advantage lies in the very low probability of exceeding regulatory limits. Compared to technical small-scale treatment plants, constructed wetlands show significantly fewer outliers. These systems are less sensitive to hydraulic and organic load fluctuations and maintain the required effluent standards even under irregular feeding or partial load operation.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mndlxnqv-296ac030c4da123ce9a66d33fbb158f1\">\n.avia-image-container.av-mndlxnqv-296ac030c4da123ce9a66d33fbb158f1 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-mndlxnqv-296ac030c4da123ce9a66d33fbb158f1 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-mndlxnqv-296ac030c4da123ce9a66d33fbb158f1 av-styling- avia-align-center  avia-builder-el-8  el_after_av_textblock  el_before_av_textblock '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3456 avia-img-lazy-loading-not-3456 avia_image ' src=\"https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Uberschreibtungshaufigkeit-PKA.png\" alt='' title='\u00dcberschreibtungsh\u00e4ufigkeit PKA'  height=\"520\" width=\"773\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Uberschreibtungshaufigkeit-PKA.png 773w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Uberschreibtungshaufigkeit-PKA-300x202.png 300w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Uberschreibtungshaufigkeit-PKA-768x517.png 768w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Uberschreibtungshaufigkeit-PKA-705x474.png 705w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-mndlr4x5-7317515e71eeb3c17cdf28164a136ae7 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h3 data-section-id=\"z5k062\" data-start=\"2141\" data-end=\"2188\">Process stability and technical robustness<\/h3>\n<p data-start=\"1667\" data-end=\"2077\">The reasons for this high operational reliability lie in the inherent properties of constructed wetlands. The interaction of filtration, adsorption, and biological degradation processes within the filter body creates a highly resilient treatment system. The vegetated soil filter acts simultaneously as a hydraulic and biological buffer, while the biofilm in the root zone ensures stable degradation processes.<\/p>\n<p data-start=\"2079\" data-end=\"2466\">In contrast, technical small-scale treatment plants depend on functioning aeration, control systems, and mechanical components. As a result, they are more sensitive to operational disturbances, failures, or improper handling. Constructed wetlands, on the other hand, operate largely without active mechanical equipment and therefore exhibit significantly lower susceptibility to failure.<\/p>\n<h3 data-section-id=\"gow0jh\" data-start=\"3214\" data-end=\"3254\">Advantages in permitting and energy consumption<\/h3>\n<p data-start=\"2517\" data-end=\"2754\">This results in clear advantages for planning and permitting. Constructed wetlands provide high verifiability of compliance with regulatory limits, reduce the risk of operational disturbances, and enable long-term stable plant operation.<\/p>\n<p data-start=\"2756\" data-end=\"2946\">In addition, nature-based systems have significantly lower energy demand per cubic meter of treated wastewater or can even operate entirely without electricity under gravity flow conditions.<\/p>\n<p data-start=\"2948\" data-end=\"3241\">The results of the study are consistent with more than 30 years of experience of Janisch &amp; Schulz. In practice, it is evident that constructed wetlands demonstrate their strengths under real operating conditions over the medium and long term, delivering consistently reliable effluent quality.<\/p>\n<p data-start=\"3243\" data-end=\"3281\">Do you find this information relevant?<\/p>\n<p data-start=\"3283\" data-end=\"3361\">\u2026 then subscribe to our <a href=\"https:\/\/janisch-schulz.com\/en\/newsletter\/\" target=\"_blank\" rel=\"noopener\">Newsletter<\/a> and don\u2019t miss any of our new publications.<\/p>\n<h3 data-start=\"3363\" data-end=\"3376\">See you soon!<\/h3>\n<hr data-start=\"4042\" data-end=\"4045\" data-is-last-node=\"\" data-is-only-node=\"\" \/>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mluuqg76-9762ee7703785026bdd5e84698fcefc9\">\n.avia-image-container.av-mluuqg76-9762ee7703785026bdd5e84698fcefc9 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-mluuqg76-9762ee7703785026bdd5e84698fcefc9 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-mluuqg76-9762ee7703785026bdd5e84698fcefc9 av-styling- av-img-linked avia-align-center  avia-builder-el-10  el_after_av_textblock  el_before_av_hr '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><a href=\"https:\/\/janisch-schulz.com\/so-geht-pflanzenklaeranlage-heute-bepflanzte-terrassen-zur-schmutzwasseraufbereitung-als-attraktives-element-moderner-und-nachhaltiger-architektur\/\" class='avia_image '  aria-label='Pr\u00fbfwert\u00fbberchreitung'><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3453 avia-img-lazy-loading-not-3453 avia_image ' src=\"https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Prufwertuberchreitung.png\" alt='' title='Pr\u00fbfwert\u00fbberchreitung'  height=\"552\" width=\"769\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Prufwertuberchreitung.png 769w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Prufwertuberchreitung-300x215.png 300w, https:\/\/janisch-schulz.com\/wp-content\/uploads\/2026\/03\/Prufwertuberchreitung-705x506.png 705w\" sizes=\"(max-width: 769px) 100vw, 769px\" \/><\/a><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-minhiqc4-6ee9884a464aa452bb9ba77569f8c61d\">\n#top .hr.hr-invisible.av-minhiqc4-6ee9884a464aa452bb9ba77569f8c61d{\nheight:50px;\n}\n<\/style>\n<div  class='hr av-minhiqc4-6ee9884a464aa452bb9ba77569f8c61d hr-invisible  avia-builder-el-11  el_after_av_image  el_before_av_hr '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mhxkwsey-c50c6e22699abe5a86f9c99e66ef64aa\">\n#top .hr.hr-invisible.av-mhxkwsey-c50c6e22699abe5a86f9c99e66ef64aa{\nheight:150px;\n}\n<\/style>\n<div  class='hr av-mhxkwsey-c50c6e22699abe5a86f9c99e66ef64aa hr-invisible  avia-builder-el-12  el_after_av_hr  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Nature-based systems deliver more reliable results: constructed wetlands not only achieve very good effluent quality, but also maintain it significantly more consistently than technical small-scale wastewater treatment plants. Studies show a lower probability of exceeding regulatory limits and a higher rate of simultaneous compliance with all limit values \u2013 a decisive advantage for safe operation and permitting.<\/p>\n","protected":false},"author":3,"featured_media":3459,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Nature-based outperforms technology","_seopress_titles_desc":"Why constructed wetlands lead in performance and operational reliability","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","iawp_total_views":22,"footnotes":""},"categories":[29,7,30],"tags":[],"class_list":["post-3495","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-constructed-wetlands","category-domesticwastewater","category-naturebasedsolutions"],"_links":{"self":[{"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/posts\/3495","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/comments?post=3495"}],"version-history":[{"count":3,"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/posts\/3495\/revisions"}],"predecessor-version":[{"id":3684,"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/posts\/3495\/revisions\/3684"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/media\/3459"}],"wp:attachment":[{"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/media?parent=3495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/categories?post=3495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/janisch-schulz.com\/en\/wp-json\/wp\/v2\/tags?post=3495"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}