A major problem related to the batik industry is the discharge of wastewater produced during the soaking, boiling, and rinsing steps without proper treatment. This gives rise to large volumes of water and chemicals such as waxes, dyes, and fixing agents like silicate, resulting in a high pH, chemical oxygen demand (CODCr), total suspended solids (TSS), and heavy metals production which has created adverse environmental effects. An effective and economical treatment is introduced for batik textile wastewater containing high levels of silicate and organic pollutants using 3 steps treatment process.
Technology Features, Specifications and Advantages
Batik textile production often lead to wastewater production during soaking, boiling and rinsing steps. These effluents have threaten aquatic organisms due to toxicities and non-degradability. A novel machinery has been invented to efficiently reduce the toxic wastewater produced by the Batik industry. Considering the chemical properties of batik effluents, an efficient and economical treatment process was established to treat batik wastewater containing not only high levels of Si and chemical oxygen demand (COD), but also potentially toxic heavy metals. Effluents from the boiling and soaking steps in the batik process, was treated under acidic conditions. This process removed ~78‑95% of COD and ~45‑50% of Si, depending on the solution pH. In the second stage, heavy metals and almost 90% of the Si are removed from the liquid phase. During this step also, about 70% of COD was removed in the sludge. The sludge was composed mainly of silicate solids and wax with polymeric properties. The final step is to remove the remaining COD to
A novel machinery has been invented to efficiently reduce the toxic wastewater produced by the Batik industry. Considering the chemical properties of batik effluents, an efficient and economical treatment process was established to treat batik wastewater. This technology is an economical and effective treatment option which complies with Standard A. The unit is relatively easy to operate, with durable design and compact size. Potential reuse of sludge in building materials.