Expanded Granular Sludge Bed (EGSB), Its application and working principle on Effluent Treatment in Textile Wet Processing
| Main Author: | Abrar Ahmed, Md. Naim Khan |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2021
|
| Online Access: |
https://zenodo.org/record/4756686 |
Daftar Isi:
- In textile industries, chemical processing requires to the colouration of the textile substrate includes 4- processing steps being known as pre-treatments, dyeing or printing, finishing (Yang et al., 2018). The textile industry recognizes the high pollution industry. Every step of chemical processing produces a huge amount of wastewater. The wastewater from printing and dyeing is distinguished by ordinary bio-degradability, high PH, intricate compositions, high chrominance, high turbidity and is emitted in large volume (Xu et al., 2018). The treatment process of such effluent includes physical, chemical and biological technologies. Considering the high removal efficiency, the common treatment method includes physical adsorption and chemical oxidation etc. These treatment processes are expensive, energy-intensive, besides that needs some more steps to prepare the absorbent and decomposes by- product (Yang et al., 2018). On the other hand, the biological process consumes lower cost, lower energy consumptions and lofty efficiency are thought an undertaking selection for ample industrial applications. The biological sludge treatment mainly divided into two processes being known as an aerobic and anaerobic process. In aerobic activated sludge process air is circulated for the decompositions of the sludge. Whereas in anaerobic activated sludge treatment, the process is carried out by microorganisms. In anaerobic sludge treatments, as the name implies for the metabolism of these organisms do not use free oxygen. Despite the anaerobic process is slower than the aerobic process, some anaerobic process feature with limited energy consumptions, excellent efficiency, bio- gas productivity alongside improved stability (Xu et al., 2018). Many types of research have been published for the development of the anaerobic process. In the interest of content, here the recent process of an anaerobic textile effluent treatment system i.e. expanded granular sludge bed has summarized with details.