Wastewater and process water treatment in the metal industry. Industrial waste water or circuit water in the metal industry can be broken down into many comprehensive, subject-specific areas. AWAS has developed various methods of treatment technology for the metal industry in the last 30 years. Generally we accept any environmental challenge and like to respond to individual problems.
Lead Pb, copper Cu, zinc Zn, tin Sn, manganese Mn, nickel Ni refinement Refinement of various non-ferrous metals
Precious metal refinement (Ag, Au, Pt, Pd)
Liquid electroplating waste
"Washer water" from blast furnaces
Waste water in this sector has a high concentration of heavy metals, oils and products in decomposition. The oils and emulgents lead to foam production at the water treatment plants. The treatment of these oils is very important.
When used as part of a wastewater treatment program, Remotox (calcium polysulfide) can effectively reduce and precipitate a wide range of heavy metals. This product has proven effective even when treating chelated and/or complexed metals. Its unique formulation also removes chromates and dichromates without preliminary reduction of the chromium to the trivalent state.
Water is essential component in the mining and steel industries. The main needs under this aspect are optimizing the management of the resources, improving productivity by treating available water for specific production process requirements and managing environmental risks by treating contaminated pond and underground mine water to remove suspended solids and in particular heavy metals (SS), arsenic and other contaminants for safe discharge into sensitive environment.
Metal finishing wastewater is a common application for ENCON Wastewater Evaporators. There are many types of wastewater generated in metal finishing. These include vibratory / tumbling wastewater, stamping wastewater, die casting wastewater and polishing wastewater. Metal Finishing wastewater cannot be simply flushed down the drain. Many companies choose to avoid the headaches of labor-intensive wastewater treatment technologies such as chemical treatment or filtration and simply pay to haul the wastewater. This...
Printing and Photo Processing Wastewater Treatment and Disposal. The printing industry and photographic processing produce a tremendous amount of waste water, from washing prints, cleaning between color changes, cleaning ink shipping containers and cleaning ink delivery systems. The wastewater produced is often contaminated with heavy metals and other highly toxic materials.
Manufacturing, metal fabrication and metal finishing require multiple washing processes to remove residue, oil, acids and other lubricants and contaminants before during and following various process steps. This generates large volumes of wastewater containing alkaline, acid solutions, heavy metal wastewaters, paint, plating residue wastewater, and other metal fabrication wastewaters. Wastewater and wash water from spills and floor cleaning must also be properly disposed. These manufacturing waste waters cannot...
Tracking the tiniest cracks – with H2O wastewater treatment. Heavy use, material fatigue and material faults can cause tiny cracks in plastic and metal parts. These are so small that they are invisible to the naked eye. But they can still be relevant to safety, e.g. on the wings of passenger jets. That’s why these parts are regularly checked for micro cracks. One way of doing this is the dye penetration process, where the part to be checked is first thoroughly cleaned. Applying a special dye and using...
TIGG specializes in providing equipment and services for removal of disinfection byproducts, metals, organics and solids in the municipal water treatment market using activated carbon and other media. In addition to treatment systems for the municipal water market, TIGG can design and fabricate tanks for surge protection and emergency water storage.
By TIGG, LLC
based in Oakdale, PENNSYLVANIA (USA).
Due to its ion exchange, flocculation, and sedimentation properties, bentonite is used in environmental protection for water clarification and sludge treatment. In water treatment systems, bentonite is a mineral type of clarifying agent, just like aluminium chlorohydrate, aluminium sulphate, ferrous sulphate, and iron chloride. However, since it is not soluble, it is the only agent capable of forming suspensions that remain stable over time. Further, bentonite “captures” metal pollutants, through an...
Voltammetric determination of many heavy metals is also possible in municipal or industrial wastewater. On account of the usually high organic load the sample is usually mineralized by means of UV digestion.
It is estimated that 23-28% of Sanitary Sewer Overflows (SSOs) are due to Fats, Oil and Grease (FOG). With significant growth in the commercial food sector on top of other high FOG producing industries such as metal processors, meat packers, cosmetic manufacturers and industrial laundry establishments, the need for publicly owned treatment plants (POTWs) and industries to regulate and monitor FOG is crucial to public health. Besides clogged sewer lines, high FOG levels also disrupt the effective operation of a...
Cyanides are used in a number of chemical synthesis and metallurgical processes (as simple salts or cyanide complexes). As a class, cyanides are highly toxic and must be destroyed or removed from wastewaters prior to discharge. The most common method for treating free or simple cyanide is alkaline chlorination. However, chlorination of cyanide results in highly toxic intermediates (e.g., cyanogen chloride) and, if organic material is present, chlorinated VOC’s. These compounds, together with the residual chlorine,...