1. Eaux us\u00e9es contenant du soufre : Il s'agit des eaux us\u00e9es de chaulage et des eaux us\u00e9es de lavage correspondantes g\u00e9n\u00e9r\u00e9es au cours du processus de chaulage de l'\u00e9pilation \u00e0 l'aide de la m\u00e9thode chaux-alcali. Les eaux us\u00e9es de chaulage contiennent des prot\u00e9ines, de la chaux, du sulfure de sodium et des solides en suspension, avec une DCOcr totale de 28%, un S2- total de 92% et un SS total de 75%.<\/p>\n\n\n\n
2. Eaux us\u00e9es de d\u00e9graissage : Il s'agit des eaux us\u00e9es g\u00e9n\u00e9r\u00e9es au cours du processus de d\u00e9graissage dans le secteur du tannage et de la transformation des fourrures, o\u00f9 des agents tensioactifs sont utilis\u00e9s pour traiter la graisse des peaux brutes, et des eaux us\u00e9es de lavage correspondantes. Les eaux us\u00e9es de d\u00e9graissage pr\u00e9sentent des niveaux \u00e9lev\u00e9s de graisse, de DCOcr et de DBO5.<\/p>\n\n\n\n
3. Eaux us\u00e9es contenant du chrome : Il s'agit de la liqueur de chrome r\u00e9siduaire et des eaux us\u00e9es de lavage correspondantes g\u00e9n\u00e9r\u00e9es au cours des processus de tannage et de retannage du chrome. Le principal polluant des eaux us\u00e9es de tannage au chrome est le m\u00e9tal lourd Ce3+, avec une concentration massique d'environ 3-4 q, et un pH faiblement acide.<\/p>\n\n\n\n
4. Eaux us\u00e9es globales : terme g\u00e9n\u00e9ral d\u00e9signant tous les types d'eaux us\u00e9es g\u00e9n\u00e9r\u00e9es par les entreprises de traitement du cuir et de la fourrure ou les zones de traitement centralis\u00e9es qui sont directement ou indirectement d\u00e9vers\u00e9es dans des projets de traitement des eaux us\u00e9es globales (telles que les eaux us\u00e9es de traitement et les eaux us\u00e9es domestiques provenant de la zone de l'usine).<\/p>","protected":false},"excerpt":{"rendered":"
1. Sulfur-containing wastewater: This refers to the liming wastewater and corresponding washing wastewater generated during the liming process of hair removal using the lime-alkali method. Lime-liming wastewater contains protein, lime, sodium sulfide, and suspended solids, with total CODcr at 28%, total S2- at 92%, and total SS at 75%. 2. Degreasing wastewater: This refers to…<\/p>","protected":false},"author":1,"featured_media":1875,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1,32],"tags":[756,755,754],"class_list":["post-2279","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-categorized","category-waste-water-treatment-news","tag-chromium-containing-wastewater","tag-degreasing-wastewater","tag-tanning-wastewater-treatment"],"_links":{"self":[{"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/posts\/2279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/comments?post=2279"}],"version-history":[{"count":1,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/posts\/2279\/revisions"}],"predecessor-version":[{"id":2280,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/posts\/2279\/revisions\/2280"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/media\/1875"}],"wp:attachment":[{"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/media?parent=2279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/categories?post=2279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/tags?post=2279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}