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Title: Flow rate analysis of wastewater inside reactor tanks on tofu wastewater treatment plant
Authors: Mamat
Sintawardani, N
Astuti, J T
Nilawati, D
Wulan, D R
Sriwuryandari, L
Sembiring, T
Jern, Ng Wun
Keywords: Wastewater treatment plants
Wastewater flow
Issue Date: 2017
Source: Mamat, Sintawardani, N., Astuti, J. T., Nilawati, D., Wulan, D. R., Muchlis, et al. (2017). Flow rate analysis of wastewater inside reactor tanks on tofu wastewater treatment plant. IOP Conference Series: Earth and Environmental Science, 60, 012023-.
Series/Report no.: IOP Conference Series: Earth and Environmental Science
Conference: IOP Conference Series: Earth and Environmental Science
Abstract: The research aimed to analyse the flow rate of the wastewater inside reactor tanks which were placed a number of bamboo cutting. The resistance of wastewater flow inside reactor tanks might not be occurred and produce biogas fuel optimally. Wastewater from eleven tofu factories was treated by multi-stages anaerobic process to reduce its organic pollutant and produce biogas. Biogas plant has six reactor tanks of which its capacity for waste water and gas dome was 18 m3 and 4.5 m3, respectively. Wastewater was pumped from collecting ponds to reactors by either serial or parallel way. Maximum pump capacity, head, and electrical motor power was 5m3/h, 50m, and 0.75HP, consecutively. Maximum pressure of biogas inside the reactor tanks was 55 mbar higher than atmosphere pressure. A number of 1,400 pieces of cutting bamboo at 50-60 mm diameter and 100 mm length were used as bacteria growth media inside each reactor tank, covering around 14,287 m2 bamboo area, and cross section area of inner reactor was 4,9 m2. In each reactor, a 6 inches PVC pipe was installed vertically as channel. When channels inside reactor were opened, flow rate of wastewater was 6x10-1 L.sec-1. Contrary, when channels were closed on the upper part, wastewater flow inside the first reactor affected and increased gas dome. Initially, wastewater flowed into each reactor by a gravity mode with head difference between the second and third reactor was 15x10-2m. However, head loss at the second reactor was equal to the third reactor by 8,422 x 10-4m. As result, wastewater flow at the second and third reactors were stagnant. To overcome the problem pump in each reactor should be installed in serial mode. In order to reach the output from the first reactor and the others would be equal, and biogas space was not filled by wastewater, therefore biogas production will be optimum.
DOI: 10.1088/1755-1315/60/1/012023
Research Centres: Nanyang Environment and Water Research Institute 
Rights: © 2017 The Author(s) (Published under licence by IOP Publishing Ltd). Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:NEWRI Conference Papers

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