Karakterisasi dan Pemilihan Alat Pengendali Limbah Sandblasting di Bengkel Blasting Industri Konstruksi Kapal

Abstract

Sandblasting waste from the blasting process of ship construction has a high potential to pollute the air and a negative impact to the environment or human health. The sandblasting waste from the blasting process of the ship construction industry has not been well managed, evidenced by the concentration of sandblasting waste that exceeds the quality standard that is equal to 6654,54 mg/m3. Therefore, it is necessary to characterize sandblasting waste and to select and apply an appropriate sandblasting waste control device. Identification of characteristics begins with taking particulate samples in locations with high volume air sampler (HVAS) equipment, taking as many as 8 sample points. Identification of sandblasting waste characteristics including concentration, diameter and heavy. Each analysis method used includes gravimetry, scanning electron microscopy (SEM) and atomic absorbtion spectrophotometry (AAS). The average value of sandblasting waste is 6654.54 mg / m3, the size of sandblasting waste is 1.75 to 63.03 μm. The measured heavy metal content is Fe and Al with an average content of 1.64 and 2.29 mg/m3. Control technology that can use for sandblasting waste are gravity settling chamber or cyclone for preremoval and bag filter or scrubber or electrostatic precipitator as an advance removal.