Granular Aerobic Sludge Cultivation in The Sequencing Batch Reactor Milani Yolanda Salim (a), Rositayanti Hadisoebroto (a*) dan Ratnaningsih (a)
a) Department of Environmental Engineering, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia
rositayanti[at]trisakti.ac.id
Abstract
The utilization of wastewater treatment technology today is not only to meet quality standards but also for reuse and recycling functions. One of them is by using granular active sludge (GAS) technology in wastewater treatment. Granular activated sludge (GAS) is a relatively new technology for wastewater treatment and has many promising features, The application of Granular Activated Sludge (GAS) is a new strategy in wastewater treatment because Granular Activated Sludge (GAS) has several advantages over wastewater treatment with conventional activated sludge. Various references mention the advantages of this technology found in the ability of rapid deposition of biomass, due to its large density, thereby reducing the need for land for deposition. Granular activated sludge (GAS) has a compact and strong microbial structure, good settling properties, and high biomass retention, bringing operational advantages. The ability of aerobic granular sludge to remove particulate organic matter from wastewater is due to the incorporation of the biofilm matrix and the growth activity of protozoa covering the surface. In this study, Granular Activated Sludge (GAS) was made using sewage sludge from a sewage treatment plant after the aeration unit process. The activated sludge was seeded for 30 days with stirring at 20 rpm to create uniform conditions in the reactor and obtained an MLSS of 6720 mg/l. After the seeding process was completed, a jar test was carried out to determine the dose of xanthan gum in the mud. The formation of GAS was carried out in a sequential batch reactor (SBR) by adding xanthan gum to the sewage sludge as much as 35 mg/l after the jar test. The size of the GAS obtained was 1.8 mm after the granulation process was completed on day 29 with slow stirring in the reactor. when compared with sludge from water treatment plants obtained 0.6 - 1.2 mm. Processing technology using GAS is generally widely used in Sequencing Batch Reactor (SBR) reactors. This paper i
Keywords: granular active sludge- sequencing batch reactor
Topic: Symposium on Energy and Environmental Science and Engineering
