Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Treatment method for tin smelting acidic wastewater and intermediate slag
The invention discloses a tin smelting waste acid sewage and intermediate slag treatment method which comprises the following specific steps: (1) adding limestone into tin smelting waste acid sewage to adjust the pH value to 10-11, and carrying out solid-liquid separation to obtain first arsenic-containing gypsum slag and first filtrate; and (2) carrying out oxidation reaction on the first filtrate, adding ferric salt, carrying out stirring reaction, carrying out solid-liquid separation to obtain second arsenic-containing gypsum slag and second filtrate, and discharging or recycling the second filtrate, and (3) uniformly mixing the first arsenic-containing gypsum slag, the second arsenic-containing gypsum slag and pyrite, and feeding the mixture into a fuming furnace for treatment. The method provided by the invention not only can realize stable up-to-standard discharge or cyclic utilization of the acidic wastewater, but also can realize harmless utilization of the intermediate slag.
本发明公开了一种锡冶炼污酸污水及中间渣的处理方法，包括以下具体步骤：(1)在锡冶炼污酸污水加入石灰石调节pH值至10‑11后，固液分离得第一含砷石膏渣和第一滤液；(2)将所述第一滤液进行氧化反应，并加入铁盐搅拌反应后，固液分离得第二含砷石膏渣和第二滤液，所述第二滤液外排或循环利用即可；(3)将所述第一含砷石膏渣、所述第二含砷石膏渣和黄铁矿混匀后送入烟化炉处理即可；本发明方法既可以实现污酸污水稳定达标排放或循环利用，还能实现中间渣的无害化利用。
Treatment method for tin smelting acidic wastewater and intermediate slag
The invention discloses a tin smelting waste acid sewage and intermediate slag treatment method which comprises the following specific steps: (1) adding limestone into tin smelting waste acid sewage to adjust the pH value to 10-11, and carrying out solid-liquid separation to obtain first arsenic-containing gypsum slag and first filtrate; and (2) carrying out oxidation reaction on the first filtrate, adding ferric salt, carrying out stirring reaction, carrying out solid-liquid separation to obtain second arsenic-containing gypsum slag and second filtrate, and discharging or recycling the second filtrate, and (3) uniformly mixing the first arsenic-containing gypsum slag, the second arsenic-containing gypsum slag and pyrite, and feeding the mixture into a fuming furnace for treatment. The method provided by the invention not only can realize stable up-to-standard discharge or cyclic utilization of the acidic wastewater, but also can realize harmless utilization of the intermediate slag.
本发明公开了一种锡冶炼污酸污水及中间渣的处理方法，包括以下具体步骤：(1)在锡冶炼污酸污水加入石灰石调节pH值至10‑11后，固液分离得第一含砷石膏渣和第一滤液；(2)将所述第一滤液进行氧化反应，并加入铁盐搅拌反应后，固液分离得第二含砷石膏渣和第二滤液，所述第二滤液外排或循环利用即可；(3)将所述第一含砷石膏渣、所述第二含砷石膏渣和黄铁矿混匀后送入烟化炉处理即可；本发明方法既可以实现污酸污水稳定达标排放或循环利用，还能实现中间渣的无害化利用。
Treatment method for tin smelting acidic wastewater and intermediate slag
一种锡冶炼污酸污水及中间渣的处理方法
WAN YONGGUANG (Autor:in) / YUAN HAIBIN (Autor:in) / XU WANLI (Autor:in) / TANG DUZUO (Autor:in) / LIU QINGDONG (Autor:in) / ZHANG ZHANG (Autor:in) / QIU WENSHUN (Autor:in)
23.05.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
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