Effluent treatment with colloidal ferroferrihydrol (FFH) is considered, which is made by anodic distillation of steel turnings or stamping wastes. It is shown that this technology has advantages over traditional reagent technology.The ecological situation in the world has deteriorated, and there are tightened specifications for industrial organizations and a growth in the market for ecological engineering. At the start of the 21st century the volume was 900 billion US dollars, while the forecast for 2005 is 1200 billion US dollars. The leaders in this market are the USA, Japan, and Germany [1].It is becoming increasingly important to devise technology for minimizing and treating industrial wastes, which in the USA are called maximally attainable, i.e., technically and financially accessible and providing solution to particular tasks within given parameters and without excessive expense [2].The specifications of environmental protection organizations for industrial effluents amount particularly to standardizing the residual pollutants in water sent to the drains. There are various methods of treating industrial effluents, in particular galvanic processes and the production of printed-circuit boards to remove heavy metals and the corresponding pollution [3].The commonest method is the reagent one. The metals are chemically precipitated by processing the effluents with alkali, carbonates, sulfides, or ferrous sulfate, which has various advantages. For example, alkali treatment is comparatively simple and reliable, and also allows one to monitor the pH automatically. However, the method has substantial shortcomings: some metals have amphoteric properties and one cannot select a pH range in which all the ions of heavy metals can be precipitated together to the required MPC; chelating agents in the solution hinder the isolation of the metals, carbonates complicate the solution of recycling the precipitate; considerable areas are required to accommodate the cumbersome reagent equipment and in some cases to separate the flows of effluent, as they have to accommodate purification stations, which involve a large volume of building work; and the consumption of reagents is also large, so their production and use involve major ecological problems.Ion-exchange method: this enables one to purify effluents down to the MPC, but it has various shortcomings: it is effective only at low concentrations of heavy-metal ions; it does not resolve the recycling problem; it requires the preliminary separation of organic substances; and it involves considerable capital investment and working costs (high cost of reagent per unit of removed metal).Ion exchange is favorable only if there are regional centers for exchanging the ion-exchange materials, since regenerating those materials at an ordinary plant is impossible.Electrodialysis and reverse osmosis: these are little used because of the equipment complexity and the expensive operation.Electrocoagulation: this is a second after reagent treatment as regards frequency of use in the CIS, but ...