scholarly journals Application of alternative carriers without protected surface in moving bed biofilm reactor for domestic wastewater treatment

2022 ◽  
Author(s):  
Bruno de Oliveira Freitas ◽  
Luan de Souza Leite ◽  
Maria Teresa Hoffmann ◽  
Antonio Wagner Lamon ◽  
Luiz Antonio Daniel
Keyword(s):  
Wastewater Treatment ◽  
Dissolved Inorganic Carbon ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Biofilm Reactor ◽  
Cod Removal ◽  
Moving Bed ◽  
Corrugated Tube ◽  
Domestic Wastewater Treatment ◽  
Protected Surface

Abstract Biological reactors with immobilized biomass on free carriers have provided new perspectives for wastewater treatment, once they reduce the system size and increase the treatment capacity. In this study, the performance of three Moving Bed Biofilm Reactors (MBBR) using different carriers (with and without protected surface area) were evaluated for domestic wastewater treatment in continuous flow. Each MBBRs (i.e., R1, R2, and R3) was filled at a ratio of 50% with high-density polyethylene carriers with different characteristics: both R1-K1 and R2-Corrugated tube with protected surface and R3-HDPE flakes without protected surface. Chemical oxygen demand (COD) removal of 80 ± 5.0, 80 ± 3.5, and 78 ± 2.4% was achieved by R1, R2, and R3, respectively. The oxygen uptake by biofilm attached on the carriers was 0.0079 ± 0.0013, 0.0033 ± 0.0015, and 0.0031 ± 0.0026 μg DO·mm−2 for the K1, corrugated tube, and HDPE flakes, respectively. No significant differences were observed between the performance of the three MBBRs in terms of physico-chemical parameters (alkalinity, pH, and dissolved inorganic carbon) and COD removal. Results showed that the carrier type and its characteristics (total area and with/without protected area) did not affect the organic matter removal. Thus, the carrier without a protected surface in MBBR could be a promising low-cost option for domestic wastewater treatment.

scholarly journals Removal of nutrients and organic pollutants from domestic wastewater treatment by sponge-based moving bed biofilm reactor

2019 ◽  
Vol 25 (5) ◽  
pp. 652-658
Author(s):  
Huynh Tan Nhut ◽  
Nguyen Tri Quang Hung ◽  
Tran Cong Sac ◽  
Nguyen Huynh Khanh Bang ◽  
Tran Quang Tri ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Treatment Plan ◽  
Domestic Wastewater ◽  
Biofilm Reactor ◽  
Organic Load ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Domestic Wastewater Treatment ◽  
Load Rate ◽  
Organic Load Rate

This study evaluates the efficiency of domestic wastewater treatment via Sponge-Based Moving Bed Biofilm Reactor (S-MBBR). The laboratory-based treatment plan uses polyurethane sponge with a specific surface area was 260 m<sup>2</sup>/m<sup>3</sup> as a carrier. The treatment plan operated under four different organic load rate: OLR1 = 0.4 kg BOD/m<sup>3</sup>.day; OLR2 = 0.6 kg BOD/m<sup>3</sup>.day; OLR3 = 0.8 kg BOD/m<sup>3</sup>.day; and OLR4 = 1.0 kg BOD/m<sup>3</sup>.day. During 80 d of the experiment, the highest treatment efficiency was at the organic load rate of 0.4 kg BOD/m<sup>3</sup>.day, with COD, SS, TN and TP were found to be 85.0 ± 12.9%, 85.7 ± 5.3%, 68.9 ± 1.7%, and 40.3 ± 0.2%, respectively. In which, the influent SS concentration were from 117.3 to 126.0 mg/L, the effluent concentration were in ranged 18.0 to 34.22 mg/L, respectively. The values of influent and effluent COD were 298.8 ± 12.88 and 44.8 ± 3.78 mg/L in turn. The OLR1 influent TN, TP concentrations were respectively 47.9 ± 2.11 and 3.6 ± 0.15 mg/L; the effluent TN, TP concentration were 14.9 ± 0.18 and 2.2 ± 0.06 mg/L, respectively. The study suggests that the effluent is within the allowable limits of National technical regulation on domestic wastewater (Column B1), indicating the applicability of S-MBBR for the domestic wastewater treatment plant.

scholarly journals PENGHILANGAN POLUTAN ORGANIK DAN PADATAN TERRSUSPENSI DI DALAM AIR LIMBAH DOMESTIK DENGAN PROSES MOVING BED BIOFILM REACTOR (MBBR)

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Nusa Idaman Said ◽  
Teguh Iman Santoso
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Retention Time ◽  
Domestic Wastewater ◽  
Biofilm Reactor ◽  
Cod Removal ◽  
Aeration Tank ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Cod Removal Efficiency

One of the alternative technologies that could be used for domestic waste water treatment is the Moving Bed Biofilm Reactor (MBBR). MBBR in principle is activated sludge that is increased by adding media in to the reactor, so there are two treatments process happened inside, suspended growth and attached growth. This research is using bioball as a media which has surface area of ±210 m2/m3 by 20% volume of reactor volume. Wastewater treatment by MBBR uses variations of Hydraulic Retention time (HRT) 12, 8, 6, and 4 hours, then the parameters measured were BOD, COD, TSS, temperature, and pH. Result of the study shows that within HRT for 12 hours in aeration tank, removal efficiency of COD is 81,37%, BOD is 82,4%, and TSS is 90,05%. HRT for 8 hours, COD removal efficiency is 88,72%, BOD is 89,7%, and TSS is 92,06%. HRT for 6 hours, COD removal efficiency is 85,48%, BOD is 80,15%, and TSS is 94,85%. HRT for 4 hours, COD removal efficiency is 81,07%, BOD is 87,88%, and TSS is 94,86%. With a retention time of 4 hours, the effluent results domestic wastewater treatment using MBBR has met quality standards in accordance with KEPMEN LH no. 112 of 2003 on Domestic Wastewater Quality Standard and Jakarta Governor Regulation no. 122 of 2005 on Domestic Wastewater Management in Special Province of Jakarta. Keywords: Domestic wastewater, MBBR, bioball.

scholarly journals Aerobic Brickbat Grit Sand (ABGS) Purifier is the Alternative Solution: Tackling the Problem of Rural Wastewater Treatment in India

2018 ◽  
Vol 13 (3) ◽  
pp. 457-464
Author(s):  
PRIYANAND AGALE ◽  
PARAG SADGIR
Keyword(s):  
Wastewater Treatment ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Alternative Solution ◽  
Domestic Wastewater Treatment ◽  
Zigzag Pattern ◽  
Important Barrier ◽  
Removal Of Contaminants ◽  
College Of Engineering ◽  
Rural Wastewater

Rural wastewater treatment is mostly ignored in developing and undeveloped countries. The most important barrier for addressing to this problem is cost of treatment and simplified technology. Aerobic Brickbat Grit Sand (ABGS) purifier consists of four stages. Wastewater flows gravitationally through partition walls in zigzag pattern with brick bats filter; Pebble sand filter and charcoal and grit filter which facilitate removal of contaminants from domestic wastewater. In the present study, experimental model for domestic wastewater treatment was setup in the Environmental Engineering laboratory at Government College of Engineering Aurangabad, Maharashtra. Physiochemical analysis was done in August and September of 2016 the percentage removal of contaminants results shows Biological Oxygen Demand (BOD) 92% - 87%, Chemical Oxygen Demand (COD) 93 - 89%, Total Suspended Solids( TSS) 80 - 78% and Turbidity 95 - 85%. The process is considered eco-friendly and easy to install technology for domestic wastewater treatment with use of locally available material. ABGS purifier is decentralized approach of domestic wastewater treatment. Hence ABGS as an alternative solution to tackle over the problem of rural wastewater treatment.

scholarly journals Domestic wastewater treatment with household-scale constructed wetland system using water fern plant (Azolla pinnata)

2021 ◽  
Vol 894 (1) ◽  
pp. 012032
Author(s):  
A Magfhira ◽  
P Kinasih ◽  
D Salsabila ◽  
E Marchella ◽  
M F Fachrul
Keyword(s):  
Wastewater Treatment ◽  
Plant Growth ◽  
Chemical Oxygen Demand ◽  
Biochemical Oxygen Demand ◽  
Aquatic Environment ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Azolla Pinnata ◽  
Domestic Wastewater Treatment

Abstract The purpose of writing this scientific paper is to analyze more deeply the management of the quality of the aquatic environment, especially regarding the treatment of domestic wastewater on a household scale. Domestic wastewater treatment with a constructed land system using Air Fern (Azolla pinnata) is expected to reduce concentration parameters such as BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), and Ammonia. The growth rate of Air Fern (Azolla pinnata) after acclimatization is quite good so that it can reduce BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand) and Ammonia, which are a source of nutrients for plant growth so that it can be used as a promising material for plant growth. It can be used as a promising material for plant growth domestic wastewater treatment. The analysis was carried out using the blended concept, a combination of virtual, online, and laboratory/field activities (offline/outside the network) while still paying attention to health protocols. The priority of this literature study research is to provide input for the government in the form of alternative solutions for managing the quality of the aquatic environment, especially regarding domestic wastewater treatment on a household scale. In addition, this research also supports the international Sustainable Development Goals (SDGs) program: Goal 6: Access to Clean Water and Sanitation” in point 3, namely “Improving water quality by reducing pollution, eliminating waste disposal, and minimizing the disposal of chemicals and hazardous materials, halving the proportion of untreated wastewater and substantially increasing recycling and safe reuse globally”. This research can contribute to appropriate technology in environmental biotechnology, namely wastewater treatment with a system that has simple technology, low cost, energy-saving and is environmentally friendly, which can create a level of hygiene and comfort for the community and maintain environmental sustainability future.

scholarly journals Chemically Enhanced Primary

2019 ◽  
Vol 4 (4) ◽  
pp. 115-123
Author(s):  
Mona Mohamed Amin Abdel Fatah ◽  
Ghada A. Al Bazedi
Keyword(s):  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Primary Treatment ◽  
Settling Time ◽  
Cod Removal ◽  
Secondary Treatment ◽  
Turbidity Removal ◽  
Treatment Processes ◽  
Domestic Wastewater Treatment ◽  
High Turbidity

The Chemically enhanced process is considered to be a physicochemical technology for domestic wastewater treatment. The objective of this paper is to improve the efficiency of primary treatment processes and reducing the Hazardous Material and cost of the secondary treatment stage either by eliminating a biological treatment, where conditions and standards allow or by reducing the secondary treatment requirements. Analysis of physicochemical parameters as well as the treatment efficiency of aluminum sulfate (alum), ferric chloride (FeCl3), lime (CaO), and seawater was used. The effect of pH and the coagulant dosages were studied as well as mixing and settling time. Conditions were optimized according to the removal efficiencies measured in terms of reduction in the concentration of total suspended solids (TSS), biological oxygen demand (BOD5), and chemical oxygen demand (COD). The optimum COD removal % was achieved at a settling time of 20 minutes, while at pH~6, alum gave a high turbidity % removal of approximately 90% at the dose of 70 mg/l. FeCl3 gave a high turbidity % removal of approximately 95% at the dose of 40 mg/l. Turbidity removal and TSS removal gave a similar pattern at a settling time of 10-20 minutes, where best results were achieved. The results also showed that at pH~4, FeCl3 gave high COD% removal of approximately 90% at the dose of 40 mg/l. By studying the effect of stirrers’ speed (rpm), the results showed that an increase in the mixing intensity, above 80 rpm decreases the removals of COD, Turbidity and TSS when using alum as a coagulant.

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