{"id":7132,"date":"2024-07-23T06:52:47","date_gmt":"2024-07-23T06:52:47","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=7132"},"modified":"2026-08-25T09:31:00","modified_gmt":"2026-08-25T09:31:00","slug":"how-do-we-treat-acrylic-wastewater-and-off-gases","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/pt\/how-do-we-treat-acrylic-wastewater-and-off-gases\/","title":{"rendered":"Acrylic Wastewater and Off-Gas Treatment Guide"},"content":{"rendered":"

Resposta r\u00e1pida:<\/strong> Acrylic-process wastewater and off-gas require source characterization before treatment selection. Flow, pH, COD, suspended solids, residual monomers, solvents, salts, variability, biodegradability, VOC load and discharge limits all affect the process train.<\/p>\n

O setor de \u00e9steres acr\u00edlicos tem amplas perspectivas de desenvolvimento e, ao mesmo tempo em que traz quest\u00f5es ambientais que n\u00e3o podem ser ignoradas, o processo de tratamento de \u00e1guas residuais de \u00e9steres acr\u00edlicos \u00e9 uma preocupa\u00e7\u00e3o inevit\u00e1vel. A seguir, a prote\u00e7\u00e3o ambiental da Liyuan lhe ajudar\u00e1 a entender o tratamento dessas \u00e1guas residuais industriais.<\/p>\n

As \u00e1guas residuais de acrilato cont\u00eam principalmente \u00e1cido ac\u00e9tico, \u00e1cido metacr\u00edlico, \u00e1cido acr\u00edlico, formalde\u00eddo, acetalde\u00eddo, \u00e1cido metilsulf\u00f4nico e alguns compostos arom\u00e1ticos e outras mat\u00e9rias org\u00e2nicas, sua demanda qu\u00edmica de oxig\u00eanio (COD) chega a dezenas de milhares de centenas de milhares de mg\/L, pertence \u00e0 alta concentra\u00e7\u00e3o de \u00e1guas residuais org\u00e2nicas, com alta concentra\u00e7\u00e3o, composi\u00e7\u00e3o complexa, caracter\u00edsticas t\u00f3xicas e prejudiciais, fortemente \u00e1cidas, com um certo grau de corrosividade.<\/p>\n

Atualmente, os seguintes tipos de m\u00e9todos s\u00e3o comumente usados no pa\u00eds e no exterior para o tratamento de \u00e1guas residuais de acrilato:<\/p>\n

(1) m\u00e9todos de tratamento biol\u00f3gico, ou seja, o uso de uma variedade de processos anaer\u00f3bicos, aer\u00f3bicos ou uma combina\u00e7\u00e3o de processos para lidar com essas \u00e1guas residuais, para que a DBO\/COD seja baixa, n\u00e3o seja f\u00e1cil para as \u00e1guas residuais bioqu\u00edmicas, pode ser adicionada a algumas das mat\u00e9rias org\u00e2nicas bioqu\u00edmicas f\u00e1ceis ou \u00e0 mistura de esgoto e \u00e0 dilui\u00e7\u00e3o do tratamento de \u00e1guas residuais.<\/p>\n

(2) M\u00e9todo de oxida\u00e7\u00e3o profunda, por meio de v\u00e1rios m\u00e9todos para produzir radicais hidroxila e rea\u00e7\u00e3o org\u00e2nica, oxida\u00e7\u00e3o direta de mat\u00e9ria org\u00e2nica como CO2, H2O e outras subst\u00e2ncias, ou como um meio de pr\u00e9-tratamento de tratamento bioqu\u00edmico, oxida\u00e7\u00e3o e decomposi\u00e7\u00e3o de org\u00e2nicos n\u00e3o biodegrad\u00e1veis em org\u00e2nicos prontamente biodegrad\u00e1veis, para melhorar a bioqu\u00edmica de \u00e1guas residuais, tais tecnologias s\u00e3o: tecnologia de microeletr\u00f3lise de ferro e carbono, oxida\u00e7\u00e3o de reagente Fenton, tecnologia de oxida\u00e7\u00e3o fotocatal\u00edtica, tecnologia de oxida\u00e7\u00e3o \u00famida, etc. A tecnologia de oxida\u00e7\u00e3o de ferro e carbono, a tecnologia de oxida\u00e7\u00e3o fotocatal\u00edtica, a tecnologia de oxida\u00e7\u00e3o \u00famida, etc.<\/p>\n

(3) M\u00e9todo f\u00edsico-qu\u00edmico, incluindo coagula\u00e7\u00e3o, pr\u00e9-tratamento de precipita\u00e7\u00e3o, uso de evapora\u00e7\u00e3o, secagem, cristaliza\u00e7\u00e3o e outros m\u00e9todos para separar os poluentes nas \u00e1guas residuais de \u00e9steres acr\u00edlicos e na \u00e1gua para atingir o objetivo de purifica\u00e7\u00e3o das \u00e1guas residuais.<\/p>\n

Na aplica\u00e7\u00e3o do processo de tratamento de \u00e1guas residuais de acrilato, muitas vezes combinado com uma variedade de tecnologias, tratamento abrangente, para obter um tratamento eficaz das \u00e1guas residuais.<\/p>\n

O \u00e1cido acr\u00edlico \u00e9 uma importante mat\u00e9ria-prima qu\u00edmica, com o desenvolvimento da economia, promove o desenvolvimento de toda a ind\u00fastria, no processo de desenvolvimento trar\u00e1 uma grande quantidade de esgoto, a fim de evitar danos ao meio ambiente, a necessidade de usar os m\u00e9todos adequados de tratamento de \u00e1guas residuais da ind\u00fastria de \u00e1cido acr\u00edlico a serem descarregados ap\u00f3s o tratamento das normas. A seguir, a prote\u00e7\u00e3o ambiental da Liyuan lhe ajudar\u00e1 a entender o tratamento de esgoto do setor de acr\u00edlico.<\/p>\n

As \u00e1guas residuais da ind\u00fastria de \u00e1cido acr\u00edlico cont\u00eam \u00e1cido ac\u00e9tico, \u00e1cido metacr\u00edlico, \u00e1cido acr\u00edlico, formalde\u00eddo, acetalde\u00eddo e outras subst\u00e2ncias org\u00e2nicas, sua demanda qu\u00edmica de oxig\u00eanio (CODcr) \u00e9 de dezenas de milhares a mais de cem mil mg\/L, fortemente \u00e1cida, pertencente \u00e0s \u00e1guas residuais org\u00e2nicas de alta concentra\u00e7\u00e3o, caracterizada por alta concentra\u00e7\u00e3o, composi\u00e7\u00e3o complexa, t\u00f3xica e perigosa, etc., o m\u00e9todo tradicional de tratamento \u00e9 mais dif\u00edcil.<\/p>\n

Atualmente, os m\u00e9todos de tratamento de \u00e1guas residuais do setor de \u00e1cido acr\u00edlico s\u00e3o principalmente o m\u00e9todo bioqu\u00edmico, a oxida\u00e7\u00e3o catal\u00edtica \u00famida e o m\u00e9todo de incinera\u00e7\u00e3o. Devido ao fato de o esgoto conter subst\u00e2ncias t\u00f3xicas para os microrganismos e \u00e0 falta de nutrientes, o uso direto do tratamento bioqu\u00edmico desse tipo de efluente, especialmente para altas concentra\u00e7\u00f5es de efluentes de \u00e1cido acr\u00edlico, n\u00e3o tem um bom efeito. O m\u00e9todo de oxida\u00e7\u00e3o \u00famida catal\u00edtica n\u00e3o consegue degradar completamente a mat\u00e9ria org\u00e2nica nas \u00e1guas residuais da produ\u00e7\u00e3o de \u00e1cido acr\u00edlico, e h\u00e1 problemas de falha do catalisador e polui\u00e7\u00e3o secund\u00e1ria; a rea\u00e7\u00e3o da \u00e1gua ainda precisa de tratamento adicional, o que aumenta o custo do tratamento. O m\u00e9todo de incinera\u00e7\u00e3o tem os problemas de alto custo e grande investimento \u00fanico, o que dificulta sua promo\u00e7\u00e3o industrial.<\/p>\n

Para resolver os problemas acima, o tratamento de \u00e1guas residuais do setor de \u00e1cido acr\u00edlico por oxida\u00e7\u00e3o eletrocatal\u00edtica, o efluente no pool de ajuste abrangente para ajustar a qualidade da \u00e1gua, a quantidade de \u00e1gua e o pH, o efluente do pool de ajuste abrangente no pool de rea\u00e7\u00e3o anaer\u00f3bica pulsada, ap\u00f3s o tratamento anaer\u00f3bico, o efluente do pool de rea\u00e7\u00e3o anaer\u00f3bica pulsada no tratamento aer\u00f3bico do pool de oxida\u00e7\u00e3o de contato, as \u00e1guas residuais tratadas no segundo tanque de sedimenta\u00e7\u00e3o para a separa\u00e7\u00e3o de \u00e1gua-lama, podem atender aos padr\u00f5es das \u00e1guas residuais descarregadas.<\/p>\n

Esse m\u00e9todo de tratamento de \u00e1guas residuais do setor de \u00e1cido acr\u00edlico por meio do tratamento bioqu\u00edmico anaer\u00f3bico antes da adi\u00e7\u00e3o do dispositivo de oxida\u00e7\u00e3o por hidrogena\u00e7\u00e3o el\u00e9trica e do reator anaer\u00f3bico de pulso em vez do pool de rea\u00e7\u00e3o anaer\u00f3bica tradicional, o processo de tratamento \u00e9 simples, a capacidade de tratamento \u00e9 grande e a efici\u00eancia do tratamento foi bastante aprimorada.<\/p>\n

Caracter\u00edsticas da fonte de g\u00e1s residual de \u00e1cido acr\u00edlico<\/p>\n

Os gases residuais de \u00e1cido acr\u00edlico s\u00e3o provenientes principalmente da produ\u00e7\u00e3o e do uso de \u00e1cido acr\u00edlico e seus derivados. Esses gases de exaust\u00e3o geralmente cont\u00eam compostos org\u00e2nicos vol\u00e1teis (VOCs), como mon\u00f4mero acr\u00edlico, acrilato de metila, acrilato de etila e assim por diante. As principais caracter\u00edsticas do escapamento acr\u00edlico incluem:<\/p>\n

Composi\u00e7\u00e3o complexa: o g\u00e1s de escape pode conter uma variedade de \u00e1cido acr\u00edlico e seus derivados, que t\u00eam propriedades qu\u00edmicas e toxicidade diferentes.<\/p>\n

Flutua\u00e7\u00e3o da concentra\u00e7\u00e3o: Devido a mudan\u00e7as nas atividades de produ\u00e7\u00e3o, a concentra\u00e7\u00e3o de \u00e1cido acr\u00edlico e seus derivados no g\u00e1s de exaust\u00e3o tamb\u00e9m pode flutuar, aumentando a dificuldade de tratamento.<\/p>\n

Nocivo: O \u00e1cido acr\u00edlico e seus derivados s\u00e3o potencialmente prejudiciais \u00e0 sa\u00fade humana e ao meio ambiente, e suas emiss\u00f5es precisam ser rigorosamente controladas.<\/p>\n

Processo de tratamento de g\u00e1s residual de \u00e1cido acr\u00edlico<\/p>\n

O processo de tratamento de g\u00e1s residual acr\u00edlico geralmente inclui as seguintes etapas:<\/p>\n

Coleta de g\u00e1s de exaust\u00e3o: Coletar o g\u00e1s residual acr\u00edlico gerado durante o processo de produ\u00e7\u00e3o por meio de dutos e instala\u00e7\u00f5es, como capelas de coleta de ar, para evitar que seja emitido diretamente na atmosfera.<\/p>\n

Pr\u00e9-tratamento: Pr\u00e9-tratamento do g\u00e1s de escape coletado, como remo\u00e7\u00e3o de poeira, remo\u00e7\u00e3o de n\u00e9voa, etc., para remover part\u00edculas s\u00f3lidas e got\u00edculas de l\u00edquido no g\u00e1s de escape e fornecer condi\u00e7\u00f5es favor\u00e1veis para o tratamento subsequente.<\/p>\n

Tratamento de adsor\u00e7\u00e3o: Adsor\u00e7\u00e3o de subst\u00e2ncias acr\u00edlicas no g\u00e1s de exaust\u00e3o usando adsorventes como o carv\u00e3o ativado para purificar o g\u00e1s de exaust\u00e3o. O carv\u00e3o ativado tem uma \u00e1rea de superf\u00edcie espec\u00edfica alta e excelente desempenho de adsor\u00e7\u00e3o, o que pode remover com efic\u00e1cia os VOCs do g\u00e1s residual.<\/p>\n

Oxida\u00e7\u00e3o catal\u00edtica: Sob a a\u00e7\u00e3o de um catalisador espec\u00edfico, os VOCs no g\u00e1s de exaust\u00e3o passam por uma combust\u00e3o oxidativa sem chama em uma temperatura de igni\u00e7\u00e3o mais baixa, oxidando e decompondo-se em CO2 e H2O e liberando uma grande quantidade de energia t\u00e9rmica. A tecnologia de oxida\u00e7\u00e3o catal\u00edtica tem as vantagens de alta efici\u00eancia de processamento e baixo consumo de energia, o que \u00e9 um m\u00e9todo eficaz para tratar o g\u00e1s residual acr\u00edlico.<\/p>\n

Caixa de acr\u00edlico para tratamento de g\u00e1s residual<\/p>\n

A seguir, apresentamos um caso de tratamento de g\u00e1s residual de \u00e1cido acr\u00edlico:<\/p>\n

Hist\u00f3rico do caso: Uma f\u00e1brica de produtos qu\u00edmicos produz uma grande quantidade de gases de exaust\u00e3o de acr\u00edlico durante a produ\u00e7\u00e3o de resina acr\u00edlica, e a emiss\u00e3o direta desses gases de exaust\u00e3o na atmosfera ter\u00e1 um s\u00e9rio impacto no meio ambiente e na sa\u00fade humana. Para resolver esse problema, a f\u00e1brica de produtos qu\u00edmicos usou adsor\u00e7\u00e3o de carv\u00e3o ativado + oxida\u00e7\u00e3o catal\u00edtica no processo de tratamento de gases de escape.<\/p>\n

Processo de tratamento:<\/p>\n

Coleta de g\u00e1s de exaust\u00e3o: O g\u00e1s de exaust\u00e3o do \u00e1cido acr\u00edlico gerado durante o processo de produ\u00e7\u00e3o \u00e9 coletado de forma abrangente por meio de um sistema de coleta de ar altamente eficiente.<\/p>\n

Pr\u00e9-tratamento: O g\u00e1s de escape coletado \u00e9 despoeirado e desemba\u00e7ado para remover as part\u00edculas s\u00f3lidas e as got\u00edculas de l\u00edquido.<\/p>\n

Adsor\u00e7\u00e3o de carv\u00e3o ativado: O g\u00e1s de exaust\u00e3o pr\u00e9-tratado \u00e9 enviado para a torre de adsor\u00e7\u00e3o de carv\u00e3o ativado para tratamento de adsor\u00e7\u00e3o. A torre de adsor\u00e7\u00e3o de carv\u00e3o ativado \u00e9 preenchida com adsorvente de carv\u00e3o ativado com alta \u00e1rea de superf\u00edcie espec\u00edfica, que pode adsorver com efic\u00e1cia subst\u00e2ncias de \u00e1cido acr\u00edlico no g\u00e1s residual.<\/p>\n

Oxida\u00e7\u00e3o catal\u00edtica: Quando a adsor\u00e7\u00e3o do carv\u00e3o ativado est\u00e1 saturada, a dessor\u00e7\u00e3o \u00e9 realizada por ar quente ou vapor para dessorver as subst\u00e2ncias acr\u00edlicas adsorvidas no carv\u00e3o ativado. O g\u00e1s residual org\u00e2nico de alta concentra\u00e7\u00e3o dessorvido \u00e9 ent\u00e3o enviado para o dispositivo de oxida\u00e7\u00e3o catal\u00edtica para tratamento de oxida\u00e7\u00e3o catal\u00edtica. Sob a a\u00e7\u00e3o do catalisador, os VOCs passam por uma combust\u00e3o oxidativa sem chama em uma temperatura mais baixa e se decomp\u00f5em oxidativamente em CO2 e H2O.<\/p>\n

Emiss\u00e3o de g\u00e1s residual: Ap\u00f3s o tratamento de oxida\u00e7\u00e3o catal\u00edtica, o g\u00e1s residual \u00e9 resfriado e filtrado e, em seguida, descarregado na atmosfera. Nesse momento, as subst\u00e2ncias acr\u00edlicas no g\u00e1s residual foram basicamente removidas de forma limpa, atendendo aos requisitos de emiss\u00f5es de prote\u00e7\u00e3o ambiental.<\/p>\n

Ao adotar o processo de tratamento de g\u00e1s residual de adsor\u00e7\u00e3o de carv\u00e3o ativado + oxida\u00e7\u00e3o catal\u00edtica, a f\u00e1brica de produtos qu\u00edmicos resolveu com sucesso o problema da emiss\u00e3o de g\u00e1s residual de \u00e1cido acr\u00edlico e contribuiu positivamente para a prote\u00e7\u00e3o ambiental.<\/p>","protected":false},"excerpt":{"rendered":"

Acrylate wastewater treatment process Acrylic ester industry has a very broad development prospects, while bringing environmental issues can not be ignored, the acrylic ester wastewater treatment process is inevitable concern.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[143],"tags":[],"class_list":["post-7132","post","type-post","status-publish","format-standard","hentry","category-uv-light-curing-series"],"yoast_head":"\nAcrylic Wastewater and Off-Gas Treatment Guide<\/title>\n<meta name=\"description\" content=\"Plan acrylic wastewater and off-gas treatment from measured flow, composition, variability, biodegradability, VOC load, safety and discharge requirements.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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