Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing ceramsite from sludge in sewage plant
The invention discloses a method for preparing ceramsite by using sludge in a sewage plant, which comprises the following steps: step 1, dewatering municipal sludge, adding a certain amount of cationic polyacrylamide sludge dewatering agent into the sludge, mixing and stirring, and carrying out filter pressing and drying treatment by using a high-pressure membrane filter press to obtain the municipal sludge; 2, selecting raw materials, namely selecting a certain amount of dewatered sludge, kaolin, black clay, pulverized coal ash and plant ash in the step 1, and crushing and grinding; the plant ash and the adhesive are added into the raw materials of the prepared ceramsite, and the plant ash can be fully mixed with the sludge, so that the adhesive property of the ceramsite is effectively improved, the hardness of the prepared ceramsite is improved, and the phenomenon that the ceramsite is dispersed due to water loss in the sintering process is effectively avoided; meanwhile, the plant ash in the ceramsite contains higher potassium carbonate, so that when the ceramsite is used as a fertilizer, the potash fertilizer required by crops can be increased, and the use of the ceramsite prepared from the sludge in agricultural fertilizers is improved.
本发明公开了一种污水厂利用污泥制备陶粒的方法，包括以下步骤：步骤一：城市污泥脱水处理，在污泥中添加一定量阳离子聚丙烯酰胺污泥脱水剂，混合搅拌，再通过高压隔膜压滤机进行压滤、干燥处理获得城市污泥；步骤二：原料的选取，选取一定量的步骤一的脱水污泥、高岭土、黑粘土、煤粉灰和草木灰进行粉碎和粉磨。本发明通过在制备的陶粒的原料中添加了草木灰和粘接剂，草木灰能够与污泥进行充分的混合，有效的提高了陶粒的粘接性能，增加的制备陶粒的硬度，有效的避免了在烧结的过程中陶粒因失水散开，同时陶粒的中的草木灰具有较高的碳酸钾，在作为肥料时，能够增加农作物需要的钾肥，提高污泥制备的陶粒在农业肥料上的使用。
Method for preparing ceramsite from sludge in sewage plant
The invention discloses a method for preparing ceramsite by using sludge in a sewage plant, which comprises the following steps: step 1, dewatering municipal sludge, adding a certain amount of cationic polyacrylamide sludge dewatering agent into the sludge, mixing and stirring, and carrying out filter pressing and drying treatment by using a high-pressure membrane filter press to obtain the municipal sludge; 2, selecting raw materials, namely selecting a certain amount of dewatered sludge, kaolin, black clay, pulverized coal ash and plant ash in the step 1, and crushing and grinding; the plant ash and the adhesive are added into the raw materials of the prepared ceramsite, and the plant ash can be fully mixed with the sludge, so that the adhesive property of the ceramsite is effectively improved, the hardness of the prepared ceramsite is improved, and the phenomenon that the ceramsite is dispersed due to water loss in the sintering process is effectively avoided; meanwhile, the plant ash in the ceramsite contains higher potassium carbonate, so that when the ceramsite is used as a fertilizer, the potash fertilizer required by crops can be increased, and the use of the ceramsite prepared from the sludge in agricultural fertilizers is improved.
本发明公开了一种污水厂利用污泥制备陶粒的方法，包括以下步骤：步骤一：城市污泥脱水处理，在污泥中添加一定量阳离子聚丙烯酰胺污泥脱水剂，混合搅拌，再通过高压隔膜压滤机进行压滤、干燥处理获得城市污泥；步骤二：原料的选取，选取一定量的步骤一的脱水污泥、高岭土、黑粘土、煤粉灰和草木灰进行粉碎和粉磨。本发明通过在制备的陶粒的原料中添加了草木灰和粘接剂，草木灰能够与污泥进行充分的混合，有效的提高了陶粒的粘接性能，增加的制备陶粒的硬度，有效的避免了在烧结的过程中陶粒因失水散开，同时陶粒的中的草木灰具有较高的碳酸钾，在作为肥料时，能够增加农作物需要的钾肥，提高污泥制备的陶粒在农业肥料上的使用。
Method for preparing ceramsite from sludge in sewage plant
一种污水厂利用污泥制备陶粒的方法
LIU YUAN (Autor:in) / CAI QUANSHENG (Autor:in) / FU XIAOQIANG (Autor:in)
29.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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