Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Device and process for comprehensive utilization and resourceful treatment of ammonium sulfate wastewater containing heavy metals
The invention provides a process for comprehensive utilization and resourceful treatment of ammonium sulfate wastewater containing heavy metals. The process comprises the following steps: crushing a calcium sulfate filter cake containing heavy metals, magnesium hydroxide and calcium hydroxide, reacting with sulfuric acid or hydrochloric acid, and controlling the reaction pH value to reduce the content of heavy metals and the content of impurities such as calcium hydroxide and magnesium hydroxide in the calcium sulfate solid to reach the standard of the calcium sulfate solid; the invention further provides a device for purifying the ammonium sulfate wastewater containing the heavy metals and the byproduct calcium sulfate. The device comprises a first reaction device, a first filtering device, a second reaction device, a second filtering device, a first pH adjusting device, a first heavy metal filtering device, a second pH adjusting device, a magnesium hydroxide filtering device, a preheater, a steam stripping deamination device, a second heavy metal filtering device, a wastewater pH adjusting device, a sulfuric acid storage tank, a lime slurry storage tank, an ammonium sulfate wastewater storage tank and an alkaline solution storage tank, according to the invention, the resourceful treatment of the ammonium sulfate wastewater containing heavy metals and magnesium is realized.
本发明提供一种含重金属硫酸铵废水的综合利用及资源化处理工艺，将含重金属、氢氧化镁、氢氧化钙的硫酸钙滤饼先破碎再与硫酸或盐酸反应，控制反应pH，从而降低硫酸钙固体中的重金属含量、氢氧化钙、氢氧化镁等杂质的含量以实现硫酸钙固体达标；本发明还提供一种含重金属的硫酸铵废水及副产硫酸钙净化的装置，包括第一反应装置、第一过滤装置、第二反应装置、第二过滤装置、第一调pH装置、第一重金属过滤装置、第二调pH装置、氢氧化镁过滤装置、预热器、汽提脱氨装置、第二重金属过滤装置、废水调pH装置、硫酸贮罐、石灰浆液贮罐、硫酸铵废水贮罐和碱溶液贮罐；本发明实现了含重金属含镁的硫酸铵废水的资源化处理。
Device and process for comprehensive utilization and resourceful treatment of ammonium sulfate wastewater containing heavy metals
The invention provides a process for comprehensive utilization and resourceful treatment of ammonium sulfate wastewater containing heavy metals. The process comprises the following steps: crushing a calcium sulfate filter cake containing heavy metals, magnesium hydroxide and calcium hydroxide, reacting with sulfuric acid or hydrochloric acid, and controlling the reaction pH value to reduce the content of heavy metals and the content of impurities such as calcium hydroxide and magnesium hydroxide in the calcium sulfate solid to reach the standard of the calcium sulfate solid; the invention further provides a device for purifying the ammonium sulfate wastewater containing the heavy metals and the byproduct calcium sulfate. The device comprises a first reaction device, a first filtering device, a second reaction device, a second filtering device, a first pH adjusting device, a first heavy metal filtering device, a second pH adjusting device, a magnesium hydroxide filtering device, a preheater, a steam stripping deamination device, a second heavy metal filtering device, a wastewater pH adjusting device, a sulfuric acid storage tank, a lime slurry storage tank, an ammonium sulfate wastewater storage tank and an alkaline solution storage tank, according to the invention, the resourceful treatment of the ammonium sulfate wastewater containing heavy metals and magnesium is realized.
本发明提供一种含重金属硫酸铵废水的综合利用及资源化处理工艺，将含重金属、氢氧化镁、氢氧化钙的硫酸钙滤饼先破碎再与硫酸或盐酸反应，控制反应pH，从而降低硫酸钙固体中的重金属含量、氢氧化钙、氢氧化镁等杂质的含量以实现硫酸钙固体达标；本发明还提供一种含重金属的硫酸铵废水及副产硫酸钙净化的装置，包括第一反应装置、第一过滤装置、第二反应装置、第二过滤装置、第一调pH装置、第一重金属过滤装置、第二调pH装置、氢氧化镁过滤装置、预热器、汽提脱氨装置、第二重金属过滤装置、废水调pH装置、硫酸贮罐、石灰浆液贮罐、硫酸铵废水贮罐和碱溶液贮罐；本发明实现了含重金属含镁的硫酸铵废水的资源化处理。
Device and process for comprehensive utilization and resourceful treatment of ammonium sulfate wastewater containing heavy metals
一种含重金属硫酸铵废水的综合利用及资源化处理的装置及工艺
LI XIAOQING (Autor:in)
08.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
C01C
Ammoniak
,
AMMONIA
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
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