Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fly ash detoxification treatment method and equipment
The invention belongs to the technical field of fly ash treatment, and relates to a fly ash detoxification treatment method and equipment. The fly ash detoxification treatment method comprises: uniformly mixing fly ash and biogas residues, forcibly stirring to obtain premixed mortar, heating and stirring the premixed mortar for 0.5-1 hour at 100-180 DEG C under a closed condition to obtain heatedmortar, and performing solid-liquid separation on the heated mortar to obtain a liquid and a solid; treating the liquid with sewage until the liquid reaches the standard, and discharging the treated liquid; and pyrolyzing the solid at 400-600 DEG C to obtain pyrolyzed residues, wherein the pyrolyzed residues are used as solid wastes for landfill or used as inorganic materials for preparing ceramics or sintered bricks. According to the method, detoxification of the fly ash can be implement by using the biogas residues, and stable solidification of heavy metal is implemented, so that dioxin substances in the fly ash are thoroughly eliminated, and secondary pollution is avoided; and efficient dehydration of the biogas residues and synergistic resource utilization of dehydration products can be implemented by using the fly ash, so that the problem of low-cost treatment of the fly ash and the biogas residues is solved.
本发明属于飞灰处理技术领域，涉及一种飞灰脱毒处理方法及设备。所述飞灰脱毒处理方法包括：将飞灰和沼渣混合均匀后强制搅拌得预混灰浆，将预混灰浆在密闭条件下于100～180℃下加热搅拌处理0.5～1h得加热灰浆，将加热灰浆经固液分离得到液体和固体；所述液体经污水处理至达标后排放；所述固体于400～600℃下热解得到热解残渣，所述热解残渣作为固体废弃物填埋或者作为无机材料用于制备陶瓷或烧结砖。本发明不仅能够利用沼渣实现飞灰脱毒，实现重金属稳定固化，彻底消除飞灰中的二噁英类物质，避免二次污染，而且还能够利用飞灰实现沼渣高效脱水以及脱水产物协同资源化利用，解决飞灰与沼渣低成本处理难题。
Fly ash detoxification treatment method and equipment
The invention belongs to the technical field of fly ash treatment, and relates to a fly ash detoxification treatment method and equipment. The fly ash detoxification treatment method comprises: uniformly mixing fly ash and biogas residues, forcibly stirring to obtain premixed mortar, heating and stirring the premixed mortar for 0.5-1 hour at 100-180 DEG C under a closed condition to obtain heatedmortar, and performing solid-liquid separation on the heated mortar to obtain a liquid and a solid; treating the liquid with sewage until the liquid reaches the standard, and discharging the treated liquid; and pyrolyzing the solid at 400-600 DEG C to obtain pyrolyzed residues, wherein the pyrolyzed residues are used as solid wastes for landfill or used as inorganic materials for preparing ceramics or sintered bricks. According to the method, detoxification of the fly ash can be implement by using the biogas residues, and stable solidification of heavy metal is implemented, so that dioxin substances in the fly ash are thoroughly eliminated, and secondary pollution is avoided; and efficient dehydration of the biogas residues and synergistic resource utilization of dehydration products can be implemented by using the fly ash, so that the problem of low-cost treatment of the fly ash and the biogas residues is solved.
本发明属于飞灰处理技术领域，涉及一种飞灰脱毒处理方法及设备。所述飞灰脱毒处理方法包括：将飞灰和沼渣混合均匀后强制搅拌得预混灰浆，将预混灰浆在密闭条件下于100～180℃下加热搅拌处理0.5～1h得加热灰浆，将加热灰浆经固液分离得到液体和固体；所述液体经污水处理至达标后排放；所述固体于400～600℃下热解得到热解残渣，所述热解残渣作为固体废弃物填埋或者作为无机材料用于制备陶瓷或烧结砖。本发明不仅能够利用沼渣实现飞灰脱毒，实现重金属稳定固化，彻底消除飞灰中的二噁英类物质，避免二次污染，而且还能够利用飞灰实现沼渣高效脱水以及脱水产物协同资源化利用，解决飞灰与沼渣低成本处理难题。
Fly ash detoxification treatment method and equipment
一种飞灰脱毒处理方法及设备
YU GUANGWEI (Autor:in) / WANG YU (Autor:in) / WANG YIN (Autor:in)
29.01.2021
Patent
Elektronische Ressource
Chinesisch
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