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A platform for research: civil engineering, architecture and urbanism
Method for efficiently recovering phosphorus in sludge
The invention provides a method for efficiently recovering phosphorus in sludge, and belongs to the technical field of sludge recovery. Comprising the following steps: S1, conditioning and dehydrating; s2, dehydration filtrate treatment; s3, carrying out heat drying; s4, sludge incineration; s5, incineration fly ash treatment; and S6, burning the bottom slag. The invention provides the method for efficiently recovering phosphorus in the sludge, and the whole process has four advantages: 1) the phosphorus in the sludge dewatering filtrate is adsorbed by the biochar to obtain a phosphorus-rich carbon-based composite phosphate fertilizer; the method comprises the following steps of (1) carrying out acid dissolution on fly ash and bottom slag, (2) carrying out dechlorination treatment on combustion fly ash and bottom slag to prepare bricks, ceramic particles and building materials, (3) adsorbing phosphorus in acid-dissolved fly ash and bottom slag lixivium by biochar to obtain a phosphorus-rich carbon-based composite phosphate fertilizer, and (4) carrying out iron/aluminum salt flocculation on a separation liquid after biochar adsorption to form a phosphorus-rich iron/aluminum-based composite phosphate fertilizer.
本发明提出了一种污泥中磷高效回收方法，属于污泥回收技术领域。包括以下步骤：S1.调理脱水；S2.脱水滤液处理；S3.热干化；S4.污泥焚烧；S5.焚烧飞灰处理；S6.焚烧底渣。本发明提出了一种污泥中磷高效回收方法，整个过程中有四大优势：1）生物炭吸附污泥脱水滤液中的磷，获得富磷的碳基复合磷肥；2）燃烧飞灰和底渣经过脱氯处理，用于制砖，制陶粒，制备建材；3）生物炭吸附酸溶后飞灰和底渣浸出液当中的磷，获得富磷的碳基复合磷肥；4）生物炭吸附后的分离液，经过铁/铝盐絮凝，形成富磷的铁/铝基复合磷肥。
Method for efficiently recovering phosphorus in sludge
The invention provides a method for efficiently recovering phosphorus in sludge, and belongs to the technical field of sludge recovery. Comprising the following steps: S1, conditioning and dehydrating; s2, dehydration filtrate treatment; s3, carrying out heat drying; s4, sludge incineration; s5, incineration fly ash treatment; and S6, burning the bottom slag. The invention provides the method for efficiently recovering phosphorus in the sludge, and the whole process has four advantages: 1) the phosphorus in the sludge dewatering filtrate is adsorbed by the biochar to obtain a phosphorus-rich carbon-based composite phosphate fertilizer; the method comprises the following steps of (1) carrying out acid dissolution on fly ash and bottom slag, (2) carrying out dechlorination treatment on combustion fly ash and bottom slag to prepare bricks, ceramic particles and building materials, (3) adsorbing phosphorus in acid-dissolved fly ash and bottom slag lixivium by biochar to obtain a phosphorus-rich carbon-based composite phosphate fertilizer, and (4) carrying out iron/aluminum salt flocculation on a separation liquid after biochar adsorption to form a phosphorus-rich iron/aluminum-based composite phosphate fertilizer.
本发明提出了一种污泥中磷高效回收方法，属于污泥回收技术领域。包括以下步骤：S1.调理脱水；S2.脱水滤液处理；S3.热干化；S4.污泥焚烧；S5.焚烧飞灰处理；S6.焚烧底渣。本发明提出了一种污泥中磷高效回收方法，整个过程中有四大优势：1）生物炭吸附污泥脱水滤液中的磷，获得富磷的碳基复合磷肥；2）燃烧飞灰和底渣经过脱氯处理，用于制砖，制陶粒，制备建材；3）生物炭吸附酸溶后飞灰和底渣浸出液当中的磷，获得富磷的碳基复合磷肥；4）生物炭吸附后的分离液，经过铁/铝盐絮凝，形成富磷的铁/铝基复合磷肥。
Method for efficiently recovering phosphorus in sludge
一种污泥中磷高效回收方法
XU GUOREN (author) / XU ZHICHAO (author)
2024-01-12
Patent
Electronic Resource
Chinese
IPC:
C05G
Mischungen aus Düngemitteln, die als einzelne von verschiedenen Unterklassen der Klasse C05 umfasst werden
,
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05
/
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
C04B
Kalk
,
LIME
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