【Characteristics of Epofloc】
Epofloc instantly resolves your wastewater treatment problems.
The points listed below make Epofloc an outstanding option.

Various types of wastewater generated by plants should be turned into clean water before being discharged into rivers and the sea. This is where Epofloc, a heavy-metal scavenger produced by Miyoshi Oil & Fat, comes into play. Epofloc offers many features not found in other products of its kind.
Environmental efforts have become a vital component in the growth of businesses, such as the fact that the Sustainable Development Goals have become a matter of course in recent years. We present the properties of Epofloc in an easy-to-understand format so that not only those in charge of wastewater treatment, but also others, may adequately comprehend this product.

The following points make Epofloc an outstanding option.
Point 1: Epofloc works with the types of heavy metal considered to be most harmful.

Epofloc can be used for such heavy metals as chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), selenium (Se), silver (Ag), cadmium (Cd), mercury (Hg), and lead (Pb). This product can be harnessed at most sites where wastewater containing heavy metals must be treated.

This is another point that makes Epofloc an outstanding option.
Point 2: Epofloc can significantly reduce costs.

There are three typical methods by which wastewater with heavy metals is treated, namely, the alkali coagulation precipitation, sodium sulfide, and heavy-metal-scavenger addition. Whereas the alkali coagulation precipitation method uses alkali to turn metals into hydroxides for coagulation and precipitation and the sodium sulfide method uses sodium sulfide to generate metal sulfides that are insoluble in water for coagulation and precipitation, the Epofloc-based heavy-metal-scavenger addition method uses a scavenger (Epofloc) to form chelate bonds* with the metal ions to create a compound that is insoluble in water for coagulation and precipitation. The direct reaction between Epofloc and the metal ions gives rise to a high degree of reactivity. This enables large flocs (clusters) that settle easily in wastewater to form and settle rapidly.

*Chelate bonds: Derived from the Greek word chela, which means “pincerlike claw of a crab.” In other words, a chelate bond is one that “pinches metal ions like the pincerlike claw of a crab.”

Because one can reduce the amount of auxiliary agents used to enhance settleability, the amount of auxiliary agents used is approximately 40% less (according to our research) than what is used with the commonly employed alkali coagulation precipitation method. Moreover, because the amount of sludge generated when using Epofloc is less, the cost of disposal is reduced. The total cost incurred for the treatment of wastewater can be substantially decreased.

This is another point that makes Epofloc an outstanding option.
Point 3: Epofloc makes the management of sludge simple.

Epofloc reacts well, even with low concentrations of heavy metals. Treatment can be safely performed without having to re-elute the generated sludge. Because there is virtually no risk of re-elution caused by changes in pH (hydrogen ion concentration), any sludge generated from the treatment of wastewater can be more easily managed.

Most heavy metals that are known to be harmful can be treated in this way, and the costs are substantially reduced. Epofloc offers the best of all worlds in that any sludge generated from the treatment of wastewater can be managed easily. Whether you have an environment in which a new wastewater treatment system is needed or another treatment agent is being used, the installation of just a tank and a pump is all you need when introducing Epofloc to enable you to easily replace your existing system as it is currently set up.

Treatment testing method based on the use of Epofloc

When the use of Epofloc in a heavy-metal treatment plan is investigated, treatment testing should be conducted using actual wastewater. As long as you have a beaker, an agitator, and a stirring bar, you can perform treatment testing on your own and easily check the effectiveness of Epofloc.

The basic steps for treatment are as outlined in steps (1) through (6) below.
The conditions, such as the type of auxiliary agent and amount to be added, are set based on the facility in question.

Testing method

(1) Setting of the amount of Epofloc to be added

The amount of Epofloc to be added is set.

*Care should be exercised because an incorrect amount could render the addition of Epofloc ineffective.

(2) Addition of Epofloc

The mixture is agitated rapidly (for approximately 10 to 20 min).

Large flocs are generated in approximately 5 to 10 min.

(3) Addition of an auxiliary agent

An auxiliary agent is added, and the mixture is agitated rapidly (for approximately 10 to 20 min).

*The ratio of Epofloc to the auxiliary agent is normally between 1:3 and 1:10.

*Auxiliary agent: Examples include a ferric chloride solution, poly-iron, aluminum sulfate, and PAC.

(4) The pH adjustment

The pH is adjusted to the treatment level (between 5 and 9).

(5) Addition of a polymer coagulant flocculant

A polymer flocculant is added. The mixture is agitated slowly (for approximately 1–5 min) before allowing to stand.

(6) Standing of the mixture

The mixture is agitated slowly and allowed to stand before the treated water is separated from the sludge that accumulates at the bottom of the beaker.

Testing is performed to determine the amount of Epofloc to be added.

Actual wastewater is used to determine the optimal amount of Epofloc to be added.
1. The amount of Epofloc to be added (such as 10, 20, or 30 mg/L) is set.
2. A beaker test is conducted according to the testing method described above.
3. The concentration of heavy-metal ions in the supernatant resulting from step (6) of the treatment process (letting it stand) (or after filtration) is measured.
4. The relationship between the amount of Epofloc added and the concentration of heavy-metal ions is graphed.

5. The amount added, which should be no more than the target treatment value, is the required amount to be added
(When the target treatment value is not reached, the amount of Epofloc added is increased.)


  • The amount of Epofloc added varies according to the concentration of heavy-metal ions in the wastewater.
  • Although a ferric chloride solution was used as the auxiliary agent in this test, you can also use poly-iron, aluminum sulfate, or PAC. In addition, you should consider progressively adding 3–10 times the amount of Epofloc that is added, such as adding 30, 50, or 200 mg/L of Epofloc.
  • Although the optimal treatment pH level for Epofloc is 7 or 8, it is possible that a better outcome can be achieved with a pH level of 5, which is in the acidic range, or a pH level of 9 or 10, which is in the alkaline range. The level should be investigated accordingly.
  • Where the pH level of raw water is less than 4, the pH level should be adjusted to raise it to 4 or higher before adding Epofloc.

If you have difficulties determining the amount of Epofloc to be added or the method of treatment to be implemented, feel free to inquire with us.

In addition, we provide one-stop solutions to the needs of our clients by offering — among other options — Eporous, a chelating resin for wastewater treatment that selectively absorbs heavy metals, and Eporva, a liquid chelating agent for the treatment of fly ash that works by immobilizing harmful heavy metals contained in fly ash generated at garbage incineration plants and other waste incineration facilities.