Heavy Metals Wastewater Treatment System (Chrome Removal): Chromium is present in the wastewaters of a number of industries, including: stainless steel manufacturing, protective coatings on metal, magnetic tapes, chrome plating, tanneries, textile dyes production, pigments and paint production, production of cement, paper, rubber, etc. Chromium is typically precipitated in two steps: reduction and precipitation.
Textile wastewater typically has high pH, high organic pollution, high salt concentration (in most cases sulphate), toxicity and colour. The composition of the wastewater varies per production process: desizing, scouring, dyeing and finishing produce completely different wastewater qualities.
POTATO CHIP MANUFACTURE V-FOLD operating on waste slurry from settler and DAF (sludges mixed in a balance tank). BEEF & LAMB SLAUGHTERHOUSE V-FOLD operating on waste slurry from DAF (sludge float pumped to a balance tank before pumping to V-FOLD). CHICKEN SLAUGHTERHOUSE V-FOLDs operating on waste activated slurry from DAF.
V-Fold fed directly from clarifier underflow via slurry pump with additional polyelectrolyte dosing at a tannery ("chrome sludge"). V-Fold fed directly from a clarifier underflow via slurry pump with additional polyelectrolyte dosing at a winery.
During the chemical production process, the solid-liquid separation requires such features as high handling capacity, large separation factor, optimized screw structure, good machine corrosion resistance, closed separation environment, etc. During the chemical reaction process, centrifuge for chemical industry can rapidly complete separate, reduce the time of side reaction or reverse reaction, and effectively increase the yield rate of reaction.
The kind of waste water from tanneries has a high salt content that can be diluted, but is hard to eliminate. They can also have a high organic load due to the high dirtiness, including blood, sand and manure. The water itself from these industries can vary a lot from a company to another depending on its actividad. However, a common characteristic is the high content of materials in suspension due to fibres and precipitated proteins.