DF-770 阳离子混凝剂（无机）

DF-770 是一种无机阳离子混凝剂的水溶液，可有效增加工业废水处理过程中通常产生的沉淀金属化合物的粒径。

推荐使用 DF-770 作为金属被氢氧化物、硫化物、二硫代氨基甲酸盐（DF-610、DF-640 和 DF-657）、硫酸亚铁和硼氢化钠沉淀的废水的处理化学品。当与阴离子聚合物结合使用时，该产品进一步提高了沉降速率。它适用于采用重力澄清或膜微滤的连续流动工艺，或在浓缩物的批量处理中增强沉降和过滤。

应用

根据具体应用，DF-770 的最佳浓度是通过广口瓶测试确定的，以实现快速沉降和出色的液体透明度。各种废水污染物的浓度，如悬浮固体、总溶解固体、COD、BOD 以及油和油脂，都对 DF-770 的最佳用量有影响。DF-770 在很宽的 pH 范围内（4.0 到 11.0）都有效。

DF-770 的添加由体积进料控制，与废水进料速率成正比。DF-770 可以在金属沉淀步骤之前、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-770 通常与高分子量阴离子聚合物结合使用，后者在 DF-770 之后添加到后续反应罐中。

当与膜微滤结合使用时，不推荐添加阴离子聚合物。

建议进行实验室评估以确定使用 DF-770 的最佳条件。Duraflow 将提供现场技术支持以协助可处理性研究。

好处

• 增加废水处理中沉淀颗粒的尺寸
• 结合阴离子聚合物进一步提高沉降速率
• 实现极好的液体透明度

物理数据（典型）
外观：透明液体
密度：10 lbs./gal
pH：2-5
水中溶解度：完全
冰点：-13°F
闪点：不适用
粘度：<100 cps @ 72°F
稳定性：稳定正常条件下
比重（H2O = 1）：1.19

DF-770 is an aqueous solution of inorganic cationic coagulant, effective for increasing the particle size of precipitated metal compounds typically produced in industrial wastewater treatment processes.

DF-770 is recommended as a treatment chemical for effluents where the metals have been precipitated by hydroxide, sulfide, dithiocarbamates (DF-610, DF-640, and DF-657), ferrous sulfate, and sodium borohydride. The product further enhances settling rates when used in combination with anionic polymer. It is suitable for use in continuous flowing processes that employ gravity clarification or membrane microfiltration or to enhance the settling and filtration in batch treatment of concentrates.

Applications

Depending on the specific application, the optimum concentration of DF-770 to achieve rapid settling and superb liquid clarity, is determined by jar testing. The concentration of the various wastewater contaminants, such as suspended solids, total dissolved solids, COD, BOD, and oil and grease, all have an impact on the optimum DF-770 dosage. DF-770 is effective over a wide pH range (4.0 to 11.0).

Addition of DF-770 is controlled by volumetric feed, proportional to the wastewater feed rate. DF-770 can be added prior to, during, or after the metal precipitation step. The optimum addition location is a function of the waste composition and the equipment available to perform the precipitation.

When used in a gravity settling system, DF-770 is usually used in combination with a high molecular weight anionic polymer, which is added in a subsequent reaction tank after the DF-770.

Addition of anionic polymer is not recommended when used in combination with membrane microfiltration.

Laboratory evaluation is recommended to determine the optimum conditions for use of the DF-770. Duraflow will provide onsite technical support to assist with the treatability study.