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DF-675 重金属沉淀剂

DF-675 重金属沉淀剂

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DF-675
重金属沉淀剂

DF-675 是一种金属沉淀剂水溶液,可有效沉淀工业废水中常见的重金属化合物。

当金属与抑制金属氢氧化物形成的螯合剂络合时,DF-675 特别有效。DF-675 在油、油脂、润滑液、肥皂和清洁剂的浓度很高的情况下也很有效。

将 DF-675 与阳离子聚合物结合使用可进一步提高沉降速率。它可以与澄清或膜微滤一起使用,以及在浓缩物的批量处理中改善沉降或过滤。

应用

根据具体应用,DF-675 实现完全金属去除、快速沉降和极好的液体透明度的最佳浓度由广口瓶测试确定。各种废水污染物的浓度,如金属浓度、螯合物浓度、悬浮固体、总溶解盐、COD、BOD 以及油和油脂,都会影响 DF-675 的最佳用量。DF-675 在很宽的 pH 范围内(4.0 到 10.0)有效。

DF-675 的添加由体积进料控制,与废水进料速率成正比。DF-675 可以在 pH 调节步骤之前、之中或之后添加。最佳添加位置取决于废物成分和可用于进行沉淀的设备。

当用于重力沉降系统时,DF-675 通常与高分子量阳离子聚合物结合使用,后者在 DF-675 之后添加到后面的反应罐中。

建议进行实验室评估以确定使用 DF-675 的最佳条件。DFLOW LLC 将提供现场技术支持以协助可处理性研究。

DF-675 还被证明可以去除痕量的锑、砷、钼、硒和钒。有时可用于与铜、镍、锌、银和铅共沉淀。

好处
  • 对重金属化合物的沉淀非常有效
  • 当螯合剂抑制金属氢氧化物的形成时非常有效
  • 与阳离子聚合物结合使用时可提高沉降速率
  • 实现完全金属去除、快速沉降和极好的液体透明度
  • 在很宽的 pH 范围内(4.0 到 10.0)有效。

物理数据(典型)
外观:棕色液体
密度:9.6 磅/加仑
比重(H2O = 1: 1.45
pH:1.5
水中溶解度:完全
闪点:不适用
稳定性:在正常条件下稳定

DF-675
Heavy Metal Precipitant

DF-675 is an aqueous solution of metal precipitant, effective for the precipitation of heavy metal compounds typically found in industrial wastewater.

DF-675 is particularly effective when the metals are complexed with chelating agents that inhibit the formation of metal hydroxides. DF-675 is also effective where there is a significant concentration of oils, greases, lubricating fluids, soaps and detergents.

Use DF-675 in combination with cationic polymer to further enhance settling rates. It can be used with clarification or membrane microfiltration as well as to improve settling or filtration in batch treatment of concentrates.

Applications

Depending on the specific application, the optimum concentration of DF-675 to achieve complete metal removal, rapid settling and superb liquid clarity is determined by jar testing. The concentration of the various wastewater contaminants, such as metal concentration, chelate concentration, suspended solids, total dissolved salt, COD, BOD, and oil and grease, all affect the optimum DF-675 dosage. DF-675 is effective over a wide pH range (4.0 to 10.0).

Addition of DF-675 is controlled by volumetric feed, proportional to the wastewater feed rate. DF-675 can be added prior to, during, or after the pH adjustment step. The optimum addition location depends on the waste composition and the equipment available to perform the precipitation.

When used in a gravity settling system, DF-675 is usually used in combination with a high molecular weight cationic polymer, which is added in a later reaction tank after the DF-675.

Laboratory evaluation is recommended to determine the optimum conditions for use of the DF-675. Dflow LLC will provide on site technical support to assist with the Treatability study.

DF-675 has also been demonstrated to remove trace quantities of Antimony, Arsenic, Molybdenum, Selenium, and Vanadium. Sometimes it can be used for co-precipitation with copper, nickel, zinc, silver, and lead.

  • cationic polymers
  • Achieves complete metal removal, rapid settling and superb liquid clarity
  • Effective over a wide pH range (4.0 to 10.0).

Physical Data (Typical)
Appearance: Brown liquid
Density: 9.6 lbs/gal
Specific gravity (H2O = 1: 1.45
pH: 1.5
Solubility in water: Complete
Flash point: Not applicabe
Stability: Stable under normal conditions




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