[et_pb_section fb_built=”1″ admin_label=”Breadcrumbs” _builder_version=”4.21.0″ _module_preset=”default” background_color=”#363636″ custom_margin=”10px||0px||false|false” custom_padding=”0px||0px||false|false” saved_tabs=”all” global_colors_info=”{}” global_module=”2946″ theme_builder_area=”post_content”][et_pb_row _builder_version=”4.18.0″ _module_preset=”default” custom_padding=”15px||15px||false|false” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.18.0″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][lwp_divi_breadcrumbs font_icon=”E||divi||400″ link_color=”#ffffff” separator_color=”#ffffff” current_text_color=”#ffffff” _builder_version=”4.18.0″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/lwp_divi_breadcrumbs][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ theme_builder_area=”post_content” _builder_version=”4.23.1″ _module_preset=”default” custom_padding=”0px||||false|false” hover_enabled=”0″ sticky_enabled=”0″][et_pb_row _builder_version=”4.23.1″ _module_preset=”default” theme_builder_area=”post_content”][et_pb_column _builder_version=”4.23.1″ _module_preset=”default” type=”4_4″ theme_builder_area=”post_content”][et_pb_text _builder_version=”4.23.1″ _module_preset=”default” theme_builder_area=”post_content” hover_enabled=”0″ sticky_enabled=”0″]<\/p>\n
[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.23.1″ _module_preset=”default” column_structure=”1_2,1_2″ theme_builder_area=”post_content”][et_pb_column _builder_version=”4.23.1″ _module_preset=”default” type=”1_2″ theme_builder_area=”post_content”][et_pb_image src=”https:\/\/astfilters.com\/aquatic-systems\/wp-content\/uploads\/sites\/3\/2015\/12\/bbf-filter-configuration.jpg” _builder_version=”4.23.1″ _module_preset=”default” theme_builder_area=”post_content” title_text=”bbf-filter-configuration” show_in_lightbox=”on” hover_enabled=”0″ sticky_enabled=”0″][\/et_pb_image][\/et_pb_column][et_pb_column _builder_version=”4.23.1″ _module_preset=”default” type=”1_2″ theme_builder_area=”post_content”][et_pb_text _builder_version=”4.23.1″ _module_preset=”default” theme_builder_area=”post_content” hover_enabled=”0″ sticky_enabled=”0″]Bubble Bead\u00ae<\/sup> Filters have an \u201chourglass\u201d shaped internal geometry with a constricted washing throat, although some models may appear to be cylindrical. These filters contain no moving parts for agitation of the bead bed.<\/p>\n During continuous filtration, water from the rearing tank enters the unit at the bottom through a slotted inlet pipe, passes upward through the bead bed which floats in the upper filtration chamber, and exits through a slotted discharge pipe at the top.<\/p>\n The inlet pipe also serves as the sludge discharge line during backwashing. The filter is equipped with an air inlet below the center of the washing throat. Four valves (inlet, sludge, air, and discharge) control the filter\u2019s operation. Check valves are sometimes used on the air inlet and water outlet lines to simplify backwashing.[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"