scholarly journals ANÁLISE DA EFICIÊNCIA DO TRATAMENTO ANAERÓBIO DA MANIPUEIRA

2021 ◽  
Vol 12 (4) ◽  
pp. 30-37
Author(s):  
Danielle Florindo Pereira ◽  
Debora Yukie Pereira Ishida ◽  
Júlio Kazuya Itimura Omori ◽  
Alexandre Teixeira de Souza
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Anaerobic Treatment ◽  
Domestic Sewage ◽  
Effluent Treatment ◽  
Total Volatile ◽  
Anaerobic Reactor ◽  
Total Solids ◽  
Volatile Solids

In the processes of industrialization of cassava flour (Minihot esculenta), there is the generation of an effluent called manipueira, which requires treatment before being released into the water body. The objective of this work was to evaluate the efficiency of effluent degradation by an anaerobic reactor, using as substrate, manipueira of a flour producing industry, and, as inoculum, two distinct sludges, one from an anaerobic reactor of ascending flow (RAFA) of domestic sewage treatment plant, and another from the activated sludge system of effluent treatment of a grain producing industry. The efficiency of the process was evaluated by the physicochemical parameters: COD, BOD, total solids (TS), total volatile solids (STV), fixed total solids (STF), pH, turbidity and cyanide. Throughout the treatment there was a significant removal of Cyanide in the effluent, that is, one of the major problems of the effluent can be solved effectively via anaerobic treatment.

Influence of flocculation conditions in the performance of an experimental domestic sewage treatment plant consisting of an anaerobic expanded bed reactor followed by dissolved air flotation

2003 ◽  
Vol 48 (6) ◽  
pp. 285-293
Author(s):  
R.G. Penetra ◽  
M.A.P. Reali ◽  
J.R. Campos
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Expanded Bed ◽  
Mean Velocity ◽  
Dissolved Air Flotation ◽  
Anaerobic Reactor ◽  
Air Flotation ◽  
Dissolved Air

This paper presents the results of a study performed with an experimental domestic sewage treatment plant (240 m3.d-1 flow) consisting of expanded bed anaerobic reactor (EBAR) followed by dissolved air flotation (DAF) unit. For the flotation step, the anaerobic reactor effluent was previously coagulated with 50 mgFeCl3.l-1 and flocculated under different conditions (mean velocity gradient, Gf, and flocculation time, Tf). The Gf values were from 60 to 100 s-1 associated with 13 and 20 min Tf values. During the tests, the following operational conditions of the flotation unit were maintained: chemical addition (50 mgFeCl3.l-1), 18% recirculation rate associated with a pressure of 450 ± 10 kPa in the saturation chamber and overflow rate of 180 m3.mÐ2.d-1. Temperature ranged from 23.8¡C to 30.01/4C. Best results were achieved for Gf = 80 s-1 and Tf = 20 min. For these conditions, the DAF unit removal efficiencies were: 94.4% for chemical oxygen demand (with 53 mg.l-1 COD residual), 87% for phosphorus (with 0.80 mgP.l-1 residual), 96.7% for total suspended solids (with 9 mg.l-1 TSS residual) and 96.4% for turbidity (with 12.9 NTU residual), when the anaerobic reactor effluents have worst quality during the whole day.

An improved small sewage treatment plant for biological purification of wastewater

1994 ◽  
Vol 29 (12) ◽  
pp. 23-29 ◽  
Author(s):  
G. Voigtländer ◽  
E.-P. Kulle
Keyword(s):  
Energy Supply ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Septic Tank ◽  
Additional Energy ◽  
Anaerobic Reactor ◽  
Step Process ◽  
Operational Costs ◽  
Aerobic Reactor

The paper presents a small sewage treatment plant (package plant) operating without additional energy. Purification of sewage is achieved in a three-step process: sedimentation tank, anaerobic reactor and wastewater pond or aerobic reactor. The efficiency of the anaerobic reactor - in contrast to the efficiency of a common septic tank - is significantly increased by using fixed biomass systems. Further degradation of sewage compounds by adhering microorganisms occurs in pond or aerobic reactor. The bed for the aerobic biomass is made of a semipermeable plastic film and arranged in order to ensure simultaneous supply of oxygen. The three pilot plants are showing different results. The main aims of research i.e. lowering of operational costs, energy supply, minimizing of maintenance expenditure and cleaning work, reliability of degradation efficiency have been achieved so far for the anaerobic reactor.

Treatment of Rural Domestic Sewage by Solar Ozonic Ecological Sewage Treatment Plant

2014 ◽  
Vol 955-959 ◽  
pp. 3393-3399 ◽  
Author(s):  
Wei Zheng ◽  
Yan Ming Yang ◽  
Yun Long Li ◽  
Jian Qiu Zheng
Keyword(s):  
Municipal Wastewater ◽  
Operating Cost ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Design Parameters ◽  
Small Scale ◽  
Municipal Wastewater Treatment ◽  
Average Percentage

The process technique and design parameters of project of Solar Ozonic Ecological Sewage Treatment Plant (short for SOESTP) which consists of anaerobic reactor, horizontal subsurface flow (HSSF) constructed wetlands(CWs) and the combination of solar power and ozone disinfection are described, the paper further examines the removal efficiency for treating rural domestic sewage, running expense and recycling ability of product water. The results show that the average percentage removal values of CODcr，BOD5，SS，TN，NH3-N，TP range from 95.6% to 98.0%, 96.0% to 98.7%, 93.1% to 96.1%, 97.0% to 98.9%, 96.9% to 99.5%, 98.2% to 99.6%, respectively, the reduction of fecal coliform (FC) reaches 99.9%, the effluent quality meets the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB18918-2002）. The running cost of SOESTP is 0.063yuan/ m3, saves much more than traditional sewage treatment, and the ozone water obtained from the reservoir will be an ideal choice for disinfection .The system has characteristics of easy manipulation, low operating cost, achieving advanced water, energy conservation and environment protection, is thought to be very suitable for use as the promotion of rural small - scale sewage treatment.

scholarly journals Study on technical standard of small complete domestic sewage treatment plant

2021 ◽  
Vol 766 (1) ◽  
pp. 012076
Author(s):  
Huang Jin ◽  
Zhang Xiaoxin ◽  
Sun Youfeng ◽  
Huang Xia ◽  
Wang Guanjun
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Technical Standard

The determination of heavy metals in domestic sewage treatment plant wastes

1973 ◽  
Vol 2 (4) ◽  
pp. 473-482 ◽  
Author(s):  
J. C. Van Loon ◽  
J. Lichwa ◽  
D. Ruttan ◽  
J. Kinrade
Keyword(s):  
Heavy Metals ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Domestic Sewage

scholarly journals Identification of Eco-friendly Practices in the Industries of EGREE Region for Sustainable Development, Andhra Pradesh, India

2021 ◽  
Vol 4 (1) ◽  
pp. 33
Author(s):  
Teki Surayya ◽  
Gudivada Rajendra Prasad ◽  
Arigela Srinivasa Rao ◽  
Jetti Srinivasa Ravisankar ◽  
Matcha Johar Khrisna ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Working Conditions ◽  
Small And Medium Enterprises ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Effluent Treatment ◽  
Coal Consumption ◽  
Estuarine Ecosystem ◽  
Godavari River

This study has been conceived with the basic objective to investigate the role played by industries in the East Godavari River Estuarine Ecosystem (EGREE) region to reduce the level of industrial pollution and other eco-friendly initiatives taken for eco-friendly and sustainable development. Effluent treatment systems prevalent in the majority of the studied industries are in working conditions. 57% of industries' effluent treatment plants are working conditions, 29% of the industries are using landing filling methods for disposal of agro-based waste. There is a strong common understanding among the EGREE region industries to lower the CO2 footprint by substituting coal consumption with bio-fuel. In some companies like ITC, biofuel consumption is 80%, and the remaining 20% is Coal. Government and policymakers have to make provision for industrial waste disposal, especially for small and medium enterprises (SME).  Waste transporting cost is high for SME. Effluent treatment plant (ETP) and sewage treatment plant (STP) conditions to be verified by the pollution control board periodically

scholarly journals Performance of sewage treatment plant with septic tank, anaerobic filter and constructed wetland with Typha spp

2019 ◽  
Vol 14 (7) ◽  
pp. 1
Author(s):  
Paulo Fortes Neto ◽  
Nara Lucia Perondi Fortes ◽  
Elizabeth Da Costa Neves Fernandes de Almeida Duarte ◽  
Rita Do Amaral Fragoso ◽  
Ana Catarina Marcos Henriques ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Constructed Wetland ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Climatic Conditions ◽  
Effluent Treatment ◽  
Septic Tank ◽  
Anaerobic Filter ◽  
Before And After

  The study reports the performance of a sanitary effluent treatment constituted by a septic tank, anaerobic filter and constructed wetland. The study monitored nutrient’s, carbonaceous material’s and thermotolerant coliform’s (CT) removal efficiency during 12 months. The treatment system included a septic tank, an anaerobic filter and a horizontal subsurface flow constructed wetland cultivated with Typha spp. Effluent samples were monthly collected before and after the septic tank, anaerobic filter and wetland. The removal efficiency for N-NH+4 was 37.6%, 66.3% for total P, 37% for COD, 54% for BOD and 99.4% for CT. The anaerobic filter and wetland were more efficient than the septic tank. P-total reduction was higher in the constructed wetland than in the anaerobic filter. Climatic conditions influenced the evaluated constituent’s removal being the highest values during hot months.

Study on Treatment of Wastewater with High-Concentration Sulfate by IC Anaerobic Reactor

2015 ◽  
Vol 737 ◽  
pp. 649-652
Author(s):  
Ming Li ◽  
Shuai Wang ◽  
De Chen Shan ◽  
Li Wei ◽  
Wen Jia Yin
Keyword(s):  
Removal Rate ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
High Concentration ◽  
Anaerobic Reactor ◽  
Two Stages ◽  
Reducing Bacteria ◽  
Artificial Water

In this study, IC anaerobic reactor was made to deal with the wastewater with high-concentration sulfate, the sludge from sewage treatment plant was put into two cells of IC reactor to domesticate sulfur-reducing bacteria (SRB), artificial water was made to simulate the wastewater with high-concentration SO42−. In order to remove the SO42− efficiently, two stages were designed in this study: sludge domestication stage and concentration strengthening stage. In sludge domestication stage, SRB could grow normally, the removal rate of SO42− was between 34.14% and 36.2%;in concentration strengthening stage, removal rate of SO42− was between 26% and 26.86%,demonstrating that SRB could grow and remove SO42− in such high-concentration SO42−( 38000 mg/L ) wastewater.

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