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Liquid mixed chelating agent for hazardous waste landfill standards and preparation method thereof
The invention provides a liquid mixed chelating agent for hazardous waste landfill standards and a preparation method of the liquid mixed chelating agent, and relates to the technical field of chelating agents. The liquid mixed chelating agent for the hazardous waste landfill standard is prepared from the following raw materials in parts by weight: 40-50 parts of an organic chelating agent, 60-80 parts of potassium dimethyl dithiocarbamate, 15-25 parts of dipotassium phosphate, 6-8 parts of sodium lignin sulfonate, 10-20 parts of cement, 4-8 parts of sodium humate, 20-30 parts of composite bentonite, 2-4 parts of a stabilizer and 2-4 parts of a defoaming agent. The composite bentonite is prepared from the following raw materials in parts by weight: 20-40 parts of bentonite, 20-30 parts of polyacrylamide, 6-8 parts of ferroferric oxide, 10-16 parts of calcium carbonate, 4-6 parts of activated carbon and 40-50 parts of a solvent. According to the method, the long-term solidification problem of the organic chelating agent is solved, dipotassium hydrogen phosphate can be used as a buffer agent to adjust the PH of the leachate, operation is easy, rapid reaction can be achieved, long-term stability can be achieved, metal such as lead can reach the standard for a long time, and soluble salt and organic matter can reach the standard for a long time.
本发明提供一种用于危废填埋标准的液体混配螯合剂及其制备方法，涉及螯合剂技术领域。该用于危废填埋标准的液体混配螯合剂包括以下重量份的原料：有机螯合剂40‑50份、福美钾60‑80份、磷酸氢二钾15‑25份、木质素磺酸钠6‑8份、水泥10‑20份、腐殖酸钠4‑8份、复合膨润土20‑30份、稳定剂2‑4份、消泡剂2‑4份；所述复合膨润土包括以下重量份的原料制成：膨润土20‑40份、聚丙烯酰胺20‑30份、四氧化三铁6‑8份、碳酸钙10‑16份、活性炭4‑6份、溶剂40‑50份。本发明，弥补了有机螯合剂的长期固化问题，磷酸氢二钾可作为缓冲剂调节浸出液PH，操作简单，既能迅速反应，又能长期稳定，且能长期使铅等金属长期达标，且使可溶性盐、有机质达标。
Liquid mixed chelating agent for hazardous waste landfill standards and preparation method thereof
The invention provides a liquid mixed chelating agent for hazardous waste landfill standards and a preparation method of the liquid mixed chelating agent, and relates to the technical field of chelating agents. The liquid mixed chelating agent for the hazardous waste landfill standard is prepared from the following raw materials in parts by weight: 40-50 parts of an organic chelating agent, 60-80 parts of potassium dimethyl dithiocarbamate, 15-25 parts of dipotassium phosphate, 6-8 parts of sodium lignin sulfonate, 10-20 parts of cement, 4-8 parts of sodium humate, 20-30 parts of composite bentonite, 2-4 parts of a stabilizer and 2-4 parts of a defoaming agent. The composite bentonite is prepared from the following raw materials in parts by weight: 20-40 parts of bentonite, 20-30 parts of polyacrylamide, 6-8 parts of ferroferric oxide, 10-16 parts of calcium carbonate, 4-6 parts of activated carbon and 40-50 parts of a solvent. According to the method, the long-term solidification problem of the organic chelating agent is solved, dipotassium hydrogen phosphate can be used as a buffer agent to adjust the PH of the leachate, operation is easy, rapid reaction can be achieved, long-term stability can be achieved, metal such as lead can reach the standard for a long time, and soluble salt and organic matter can reach the standard for a long time.
本发明提供一种用于危废填埋标准的液体混配螯合剂及其制备方法，涉及螯合剂技术领域。该用于危废填埋标准的液体混配螯合剂包括以下重量份的原料：有机螯合剂40‑50份、福美钾60‑80份、磷酸氢二钾15‑25份、木质素磺酸钠6‑8份、水泥10‑20份、腐殖酸钠4‑8份、复合膨润土20‑30份、稳定剂2‑4份、消泡剂2‑4份；所述复合膨润土包括以下重量份的原料制成：膨润土20‑40份、聚丙烯酰胺20‑30份、四氧化三铁6‑8份、碳酸钙10‑16份、活性炭4‑6份、溶剂40‑50份。本发明，弥补了有机螯合剂的长期固化问题，磷酸氢二钾可作为缓冲剂调节浸出液PH，操作简单，既能迅速反应，又能长期稳定，且能长期使铅等金属长期达标，且使可溶性盐、有机质达标。
Liquid mixed chelating agent for hazardous waste landfill standards and preparation method thereof
一种用于危废填埋标准的液体混配螯合剂及其制备方法
ZHONG QIJUN (author) / ZHOU WEIHUA (author) / CHEN QIAN (author) / WANG XIAODONG (author)
2021-04-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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