{"id":5665,"date":"2019-06-06T22:44:06","date_gmt":"2019-06-06T22:44:06","guid":{"rendered":"https:\/\/genesiswatertech.com\/?p=5665"},"modified":"2019-06-06T22:51:28","modified_gmt":"2019-06-06T22:51:28","slug":"how-to-choose-the-correct-biological-wastewater-treatment-process-for-your-application","status":"publish","type":"post","link":"https:\/\/genesiswatertech.com\/blog-post\/how-to-choose-the-correct-biological-wastewater-treatment-process-for-your-application\/","title":{"rendered":"How to Choose the Correct Biological Wastewater Treatment Process for Your Application","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5665\" class=\"elementor elementor-5665\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4ab477e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4ab477e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7e23ecb\" data-id=\"7e23ecb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-39e90ce elementor-widget elementor-widget-heading\" data-id=\"39e90ce\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Choose The Most Appropriate Biological Wastewater Treatment Process Based On Application<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section 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class=\"elementor-share-btn__text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__title\">\n\t\t\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bf6a613 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bf6a613\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-89431d4\" data-id=\"89431d4\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-22bc3f2 elementor-widget elementor-widget-image\" data-id=\"22bc3f2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"579\" height=\"390\" src=\"https:\/\/genesiswatertech.com\/wp-content\/uploads\/2019\/06\/Biological-Wastewater-Treatment.jpg\" class=\"attachment-large size-large wp-image-5666\" alt=\"biological wastewater treatment\" srcset=\"https:\/\/genesiswatertech.com\/wp-content\/uploads\/2019\/06\/Biological-Wastewater-Treatment.jpg 579w, https:\/\/genesiswatertech.com\/wp-content\/uploads\/2019\/06\/Biological-Wastewater-Treatment-300x202.jpg 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5fafd85 elementor-widget elementor-widget-text-editor\" data-id=\"5fafd85\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-size: medium;\">There is different discharge restrictions for wastewater produced by different sectors and industries. Treatment systems need to be designed around each individual application in order to specifically target and treat the pollutants produced by them. This is why it is important to choose the correct biological wastewater treatment process for secondary stage wastewater treatment.<\/span><\/p><p><span style=\"font-size: medium;\">When choosing treatment methods for wastewater systems, there are many options to choose from within the different treatment stages. Secondary stages typically consist of biological wastewater treatment systems, and those, in particular, have several different options. Careful considerations of multiple aspects need to be made to choose the most optimal solution for a particular application.<\/span><\/p><p><span style=\"font-size: medium;\">At the core of the biological wastewater treatment process, there are three general considerations and two that are specific to biological treatment. <\/span><\/p><p><span style=\"font-size: medium;\">The general considerations include :<\/span><\/p><ul><li><p><span style=\"font-size: medium;\">Occupied area or how much land the system will occupy on site;<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Construction costs, how much money will be required to build the system;<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Operating costs, the costs associated with the day to day use of the system <\/span><\/p><\/li><\/ul><p><span style=\"font-size: medium;\">The specific considerations are the hydraulic retention time (HRT) and sludge retention time (SRT). HRT refers to how long the effluent is exposed to the process. SRT however, is the length of time that a unit of sludge (or other bio media) is active within the reactor.<\/span><\/p><p><span style=\"font-size: medium;\">Treatment selection and design of biological wastewater treatment systems take all five of those criteria (and others) into account. Often during decision-making processes, weight values are given to each criterion and then points are given to each method for each of those criteria (often by way of a ranking system). The points are multiplied by the weights and the results are used to compare each option numerically. The weighting system is usually subject to change based on what criteria a company or municipal organization deems more important, so we won\u2019t go into that in this article.<\/span><\/p><p><span style=\"font-size: medium;\">Instead, we\u2019ll rank the options in comparison to one another under the assumption that all organic loads and flow rates are the same for each possible system. <br \/><\/span><\/p><p><i><span style=\"font-size: medium;\">We will discuss four biological wastewater treatment processes and the specific advantages and disadvantages of each below. <\/span><\/i><\/p><p><span style=\"font-size: medium;\"><b>Four Possible Biological Processes:<\/b><\/span><\/p><p><span style=\"font-size: medium;\"><i>Activated Sludge Process (ASP)<\/i><\/span><\/p><p><span style=\"font-size: medium;\">A suspended solids system that aerates a loose biological media and is then pumped to a clarifying tank to settle. Sludge from the clarifier is recirculated back into the reactor, called return activated sludge.<\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Occupied Area: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Second largest<\/i><\/span><span style=\"font-size: medium;\"><i><b> HRT:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Second lowest, 4-10 hours<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Construction Costs: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Second highest<\/i><\/span><span style=\"font-size: medium;\"><i><b> SRT:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Lowest<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Operational Costs: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Low<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i>Sequencing Batch Reactor (SBR)<\/i><\/span><\/p><p><span style=\"font-size: medium;\">A version of an ASP that does not have a separate clarifying tank. Instead, after a sufficiently long retention time, the solution is allowed to settle and the resulting supernatant is pumped to tertiary treatment.<\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Occupied Area: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Second smallest<\/i><\/span><span style=\"font-size: medium;\"><i><b> HRT:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Second highest, 6-12 hours<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Construction Costs: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Second lowest<\/i><\/span><span style=\"font-size: medium;\"><i><b> SRT: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Similar to OD<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Operational Costs: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Low<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i>Oxidation Ditch (OD)<\/i><\/span><\/p><p><span style=\"font-size: medium;\">Another version of ASP that moves the effluent around an elliptical or circular channel for an extended aeration cycle.<\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Occupied Area:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Largest <\/i><\/span> <span style=\"font-size: medium;\"><i><b>HRT:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Highest, 12-24 hours<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Construction Costs:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Highest<\/i><\/span> <span style=\"font-size: medium;\"><i><b>SRT: <\/b><\/i><\/span><span style=\"font-size: medium;\"><i>Similar to SBR<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Operational Costs:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Low<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><a href=\"https:\/\/genesiswatertech.com\/blog-post\/the-moving-bed-biofilm-reactor-sewage-plant-the-who-what-when-where-why-and-how\/\" target=\"_blank\" rel=\"noopener\">Moving Bed Biofilm Reactor (MBBR)<\/a><\/i><\/span><\/p><p><span style=\"font-size: medium;\">A fixed film system that uses a biofilm that has adhered to small specialized carriers that are moved about the reactor by aeration bubbles. Like the ASP, MBBR is followed by a clarification step.<\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Occupied Area:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Smallest <\/i><\/span> <span style=\"font-size: medium;\"><i><b>HRT:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Lowest, 1-5 hours<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Construction Costs:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Lowest<\/i><\/span> <span style=\"font-size: medium;\"><i><b>SRT:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Highest<\/i><\/span><\/p><p><span style=\"font-size: medium;\"><i><b>Operational Costs:<\/b><\/i><\/span> <span style=\"font-size: medium;\"><i>Low<\/i><\/span><\/p><table border=\"1\" width=\"622\" cellspacing=\"0\" cellpadding=\"7\"><colgroup> <col width=\"82\" \/> <col width=\"93\" \/> <col width=\"188\" \/> <col width=\"201\" \/> <\/colgroup><tbody><tr valign=\"TOP\"><td bgcolor=\"#ffffff\" width=\"82\"><p align=\"CENTER\"><span style=\"font-size: medium;\"><b>Process<\/b><\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"93\"><p align=\"CENTER\"><span style=\"font-size: medium;\"><b>Type<\/b><\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"188\"><p align=\"CENTER\"><span style=\"font-size: medium;\"><b>Advantages<\/b><\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"201\"><p align=\"CENTER\"><span style=\"font-size: medium;\"><b>Disadvantages<\/b><\/span><\/p><\/td><\/tr><tr valign=\"TOP\"><td bgcolor=\"#ffffff\" width=\"82\"><p align=\"CENTER\"><span style=\"font-size: medium;\">ASP<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"93\"><p align=\"CENTER\"><span style=\"font-size: medium;\">Suspended Solid<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"188\"><ul><li><p><span style=\"font-size: medium;\">Common and conventional<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Reduced odor<\/span><\/p><\/li><\/ul><\/td><td bgcolor=\"#ffffff\" width=\"201\"><ul><li><p><span style=\"font-size: medium;\">Sludge recirculation<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Bad for shock loads and toxic shock<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Bad sludge settling<\/span><\/p><\/li><\/ul><\/td><\/tr><tr valign=\"TOP\"><td bgcolor=\"#ffffff\" width=\"82\"><p align=\"CENTER\"><span style=\"font-size: medium;\">SBR<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"93\"><p align=\"CENTER\"><span style=\"font-size: medium;\">Suspended Solid<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"188\"><ul><li><p><span style=\"font-size: medium;\">No separate clarifier tank<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Remote operation<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Operation flexibility<\/span><\/p><\/li><\/ul><\/td><td bgcolor=\"#ffffff\" width=\"201\"><ul><li><p><span style=\"font-size: medium;\">Sludge recirculation<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Frequent sludge disposal<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Higher energy consumption<\/span><\/p><\/li><\/ul><\/td><\/tr><tr valign=\"TOP\"><td bgcolor=\"#ffffff\" width=\"82\"><p align=\"CENTER\"><span style=\"font-size: medium;\">Ox. Ditch<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"93\"><p align=\"CENTER\"><span style=\"font-size: medium;\">Suspended Solid<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"188\"><ul><li><p><span style=\"font-size: medium;\">Low sludge yield<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Can handle shock loads<\/span><\/p><\/li><\/ul><\/td><td bgcolor=\"#ffffff\" width=\"201\"><ul><li><p><span style=\"font-size: medium;\">Sludge recirculation<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Can be noisy and odiferous<\/span><\/p><\/li><\/ul><\/td><\/tr><tr valign=\"TOP\"><td bgcolor=\"#ffffff\" width=\"82\"><p align=\"CENTER\"><span style=\"font-size: medium;\">MBBR<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"93\"><p align=\"CENTER\"><span style=\"font-size: medium;\">Dynamic Fixed Film<\/span><\/p><\/td><td bgcolor=\"#ffffff\" width=\"188\"><ul><li><p><span style=\"font-size: medium;\">Once through process<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Self-regulating<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Great for system upgrades<\/span><\/p><\/li><li><p><span style=\"font-size: medium;\">Can handle load and toxicity fluxes<\/span><\/p><\/li><\/ul><\/td><td bgcolor=\"#ffffff\" width=\"201\"><ul><li><p><span style=\"font-size: medium;\">May need longer startup period<\/span><span style=\"font-size: medium;\"> if biological seeding is not used<\/span><\/p><\/li><\/ul><\/td><\/tr><\/tbody><\/table><p><span style=\"font-size: medium;\">Each of these treatment methods has a variety of pros and cons that can make them good or bad for a particular application. All four are low cost in terms of operation, but construction costs were higher for reactors that required more land area, the oxidation ditch being the highest in that regard. As for the retention times, MBBR was better on both accounts, having higher sludge retention without sacrificing hydraulic retention like the SBR and oxidation ditch methods. MBBR is a very strong contender for consideration, especially if the unit comes from a company with well-designed carrier media. In many cases, comparing reduction rates of an MBBR unit with lower active surface area media with that of other treatments can show MBBR with lower removal efficiency. Therefore, MBBR can also be considered as an add-on process to be used with some form of activated sludge process to improve the treatment efficiency of the entire system. <\/span><\/p><p><span style=\"font-size: medium;\">What you see above are guidelines that may be considered when making a decision on a <a href=\"https:\/\/www.environmental-expert.com\/products\/gwt-moving-bed-biofilm-reactor-mbbr-wastewater-treatment-system-558872\" target=\"_blank\" rel=\"noopener\">biological wastewater treatment process<\/a>. Inevitably, the manner in which deciding factors are weighted is entirely dependent on what the involved company feels is more important, and design companies can always provide more detailed information that can aid in decision making. <\/span><\/p><p><span style=\"color: #333333;\"><span style=\"font-size: medium;\"><i><b>Do you need some assistance in deciding on a biological wastewater treatment process for your municipal or commercial\/industrial wastewater treatment application? <br \/><\/b><\/i><\/span><\/span><\/p><p><span style=\"color: #333333;\"><span style=\"font-size: medium;\"><i><b>Contact Genesis Water Technologies, Inc. at 1-877-267-3699 within the USA, reach out to our local offices worldwide or contact us via email at <\/b><\/i><\/span><\/span><a href=\"https:\/\/www.genesiswatertech.com\/contact\"><span style=\"color: #000080;\"><span lang=\"zxx\"><u><span style=\"color: #1155cc;\"><span style=\"font-size: medium;\"><i><b>customersupport@genesiswatertech.com<\/b><\/i><\/span><\/span><\/u><\/span><\/span><\/a><span style=\"color: #333333;\"><span style=\"font-size: medium;\"><i><b> to speak with one of our knowledgeable specialists to discuss your application.<\/b><\/i><\/span><\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>How to Choose The Most Appropriate Biological Wastewater Treatment Process Based On Application Share on facebook Facebook Share on twitter Twitter Share on linkedin LinkedIn &hellip;<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[96,92,110,97,93],"tags":[],"class_list":{"0":"post-5665","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-industrial-wastewater-reuse","7":"category-industrial-wastewater-treatment","8":"category-moving-bed-biofilm-reactor-mbbr","9":"category-municipal-wastewater-reuse","10":"category-municipal-wastewater-treatment","11":"entry"},"yoast_head":"<!-- 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