Les m\u00e9thodes de pr\u00e9traitement des eaux us\u00e9es comprennent principalement des m\u00e9thodes physiques, chimiques et biologiques. Les m\u00e9thodes sp\u00e9cifiques sont les suivantes :<\/p>\n\n\n\n
1. Pr\u00e9traitement physique<\/p>\n\n\n\n
1.1 Tamis : \u00c9liminer les grosses particules (telles que les d\u00e9chets de plastique et de papier) par interception.<\/p>\n\n\n\n
1.2 Les dessableurs : La gravit\u00e9 est utilis\u00e9e pour s\u00e9parer les impuret\u00e9s inorganiques telles que le gravier et la terre.<\/p>\n\n\n\n
1.3 Trappe \u00e0 graisse : Il \u00e9limine les huiles flottantes en utilisant la diff\u00e9rence de densit\u00e9 entre l'huile et l'eau.<\/p>\n\n\n\n
1.4 Flottation : Utilise des microbulles pour absorber les particules en suspension \u00e0 la surface de l'eau.<\/p>\n\n\n\n
1.5 Coagulation et s\u00e9dimentation : Ajouts Les coagulants tels que le chlorure de polyaluminium (PAC) provoquent la pr\u00e9cipitation des solides en suspension.<\/p>\n\n\n\n
2. Pr\u00e9traitement chimique<\/p>\n\n\n\n
2.1 Neutralisation : Ajuster le pH dans une fourchette appropri\u00e9e (par exemple, 6,8-9,0).<\/p>\n\n\n\n
2.2 Coagulation : \u00c9limine les solides en suspension par des m\u00e9canismes tels que la compression de la double couche et le pontage par adsorption.<\/p>\n\n\n\n
3. Pr\u00e9traitement biologique<\/p>\n\n\n\n
3.1 Pr\u00e9a\u00e9ration : D\u00e9compose les polluants organiques par oxyg\u00e9nation.<\/p>\n\n\n\n
3.2 Filtration biotrickling : Utilise des micro-organismes pour d\u00e9composer les polluants.<\/p>\n\n\n\n
4. Autres m\u00e9thodes sp\u00e9ciales<\/p>\n\n\n\n
4.1 Adsorption : Le charbon actif adsorbe les polluants organiques (par exemple, les COV).<\/p>\n\n\n\n
4.2 Oxydation catalytique par voie humide : D\u00e9compose par oxydation les polluants organiques (par exemple, les hydrocarbures aromatiques polycycliques) \u00e0 des temp\u00e9ratures et des pressions \u00e9lev\u00e9es.<\/p>","protected":false},"excerpt":{"rendered":"
Wastewater pretreatment methods primarily include physical, chemical, and biological methods. The specific methods are as follows: 1. Physical Pretreatment 1.1 Screens: Remove large particles (such as plastic and paper scraps) through interception. 1.2 Grit Chambers: Use gravity to separate inorganic impurities such as gravel and soil. 1.3 Grease Trap: Removes floating oil by utilizing the…<\/p>","protected":false},"author":1,"featured_media":2123,"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,"footnotes":""},"categories":[1,32],"tags":[558,559,557,226,356,556,66,553,555,423],"class_list":["post-2122","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-categorized","category-waste-water-treatment-news","tag-biological-pretreatment","tag-biotrickling-filtration","tag-chemical-pretreatment","tag-coagulation-and-sedimentation","tag-flotation","tag-grease-trap","tag-grit-chambers","tag-neutralization","tag-physical-pretreatment","tag-wastewater-pretreatment"],"_links":{"self":[{"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/posts\/2122","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=2122"}],"version-history":[{"count":1,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/posts\/2122\/revisions"}],"predecessor-version":[{"id":2124,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/posts\/2122\/revisions\/2124"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/media\/2123"}],"wp:attachment":[{"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/media?parent=2122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/categories?post=2122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.luckywwtp.com\/fr\/wp-json\/wp\/v2\/tags?post=2122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}