Industrial wastewater. Wastewater containing lead is extremely toxic. This metal is hazardous and has toxic and mutagenic effects on living organisms.
It has an extremely negative effect on the human reproductive system. For these reasons, the presence of lead is strictly limited in the wastewater of industrial facilities. When industrial wastewater is discharged into municipal sewage systems, the maximum permissible discharge (MPD) of lead should not exceed 0.1-0.05 mg / dm3, and the discharge into waterways should be less than 0.03 mg / dm3.
Industrial wastewater does not always contain lead. Significant concentrations of lead come from the production of sliding bearings and crystal glass.
Such wastewater contains many different metals and pollutants that are difficult to extract. The wastewater from sliding bearings production contains heavy metals (copper, zinc, nickel, tin), a wide range of organic impurities, particularly alkylsulfonic acid and a mixture of surfactants. The wastewater from crystal glass manufacturing contains glass colloidal particles and glass grinding pastes, as well as zinc and organic compounds. Thus, the wastewater from these processes are characterized by significant fluctuations in the concentrations of contaminants and the pH value.
Lead ions could be precipitated with the help of reagents in water solution in the form of hydroxides, sulfides and carbonates. Since lead hydroxides have a significant solubility (S = 1,0-0,95 mg/dm3), it is recommended to precipitate them in less soluble compounds as basic carbonate or lead sulfide.
Modern chemical methods of wastewater treatment are characterized by high consumption of reagents, complex treatment facilities and long duration of the process.
GlobeCore offers the AVS electromagnetic nano-mills for the industrial wastewater purification from lead. They were developed in the 1960-1970s. Even then they showed excellent results in the intensification of different technological processes.
Experiments confirmed the efficiency of the AVS for purification of wastewaters of different origins, which was achieved due to a number of effects and processes occurring in the operating chamber of the unit: the impact of electromagnetic field, electrolysis, intensive mixing, acoustic impact etc. The chemical reactions, which in traditional equipment would last minutes or hours, only last seconds or tens of seconds in the AVS.
The unit is compact and can be integrated into virtually any existing wastewater treatment line. With proper placement (serial or parallel) of multiple units, the processing rate is virtually unlimited.