Tofu Wastewater Treatment with Variation of Air Rate in Aeration Suspension System

Authors

  • Rizka Novembrianto Environmental Engineering, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia
  • Restu Hikmah Ayu Murti Environmental Engineering, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia
  • Firra Rosariawari Environmental Engineering, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya 60294, Indonesia

DOI:

https://doi.org/10.11594/nstp.2022.2446

Keywords:

Tofu industry, suspended aeration, organic content

Abstract

There are many small-scale industries in Indonesia. It is also rare to find a tofu industry that has wastewater treatment. This contributes to water pollution and worsens river water quality if it is not treated first. This study aims to treat small-scale tofu industrial wastewater easily to reduce its organic content with a suspension aeration system. Modified seeding process with the addition of a small amount of Calcium Carbonate to raise the pH. The seeding process was carried out for 20 days with the highest MLSS value of 1136 mg/L. Furthermore, the acclimatization process was carried out for 11 days for reactor stability with a COD removal percentage of 83.15%. The running process was carried out in an aeration tank for 18 hours and continued with the best recirculation at 5 hours with an oxygen rate of 12 L/min. The best achievement in decreasing COD content was 89.79%, TSS was 74.14% and N-Total was 69.55%.

Downloads

Download data is not yet available.

Downloads

Published

19-05-2022

Conference Proceedings Volume

Section

Articles

How to Cite

Novembrianto , R. ., Murti, R. H. A. . ., & Rosariawari, F. . (2022). Tofu Wastewater Treatment with Variation of Air Rate in Aeration Suspension System. Nusantara Science and Technology Proceedings, 2022(24), 298-306. https://doi.org/10.11594/nstp.2022.2446

Share

Similar Articles

1-10 of 315

You may also start an advanced similarity search for this article.