scholarly journals AN EFFICIENT APPROACH TO MANAGE DOMESTIC WASTEWATER IN SMART CITY

2020 ◽  
Vol XLIV-4/W3-2020 ◽  
pp. 391-398
Author(s):  
A. Taouraout ◽  
A. Chahlaoui ◽  
D. Belghyti ◽  
I. Taha ◽  
M. Lachhab
Keyword(s):  
Smart City ◽  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Acceptable Solution ◽  
Organic Matters ◽  
Human Waste ◽  
Ecological Sanitation ◽  
Limit Value ◽  
Domestic Wastewater Treatment

Abstract. The adoption of an ecological sanitation system, meeting the requirements hygienic and sanitary, constitutes a feasible and technically and economically acceptable solution in the future smart city. This new sanitation concept has the advantage of solving the problems of pathogens of human waste at source, thus offering the possibility of reusing them after treatment (recycling) in order to improve the standard of living of the population and protect the environment. The aim of this study is to evaluate the efficiency of a vertical Multi-Soil-Layering system (MSL) system to treat domestic wastewater under three hydraulic loading rates: 250 L/m2/day, 350 L/m2/day and 500 L/m2/day, in Moroccan conditions. To do this, a vertical MSL system measuring 20cm × 60cm × 78cm (L × W × H) was designed to treat domestic wastewater and his performance was investigated. The results showed high removal of organic matters and nutrients under the three hydraulic loads tested; the performance averages recorded are upper than 84 % for organic matters, 83.1 ± 7.2 % for ammonium and 72.4 ± 14.1 % for orthophosphate. The quality of the treated wastewater was evaluated according to Moroccan reject limit value. Consequently, this system could be considered an effective solution to be adopted for decentralized domestic wastewater treatment in Moroccan conditions.

scholarly journals Ecological sanitation a new approach to protect public health and environment in rural areas of Morocco

2021 ◽  
Vol 319 ◽  
pp. 01065
Author(s):  
Aziz Taouraout ◽  
Abdelkader Chahlaoui ◽  
Khadija Ouarrak ◽  
Hicham Aaziz ◽  
Driss Belghyti
Keyword(s):  
Constructed Wetland ◽  
Rural Areas ◽  
Domestic Wastewater ◽  
Organic Pollution ◽  
Pilot Scale ◽  
Ecological Sanitation ◽  
Limit Value ◽  
Soil Layering ◽  
Almost All

Wastewater and human excreta are threatening the quality of groundwater and watercourses in rural areas of Morocco. The new sanitation approach that has advantage to solve the problems of pathogens of human waste at source and offering the possibility of reusing them after treatment is called Ecological Sanitation (EcoSan) could be an alternative solution to the conventional one. It is in this perspective that our study made an investigation on economic, ecological, sustainable sanitation techniques adapted to the Moroccan context. Indeed, a survey was carried out at Dayet Ifrah village to assess the population appreciation of the EcoSan structures installed. Survey results showed that these structures have been generally accepted by almost all users and non-users (95%). On the other hand, a pilot-scale system composed by two types of filters (vertical constructed wetland and vertical Multi-Soil-Layering) have been installed in order to treat domestic wastewater coming from a single household and their performance was evaluated. The filters showed good performance to remove organic pollution (> 84.5%) and orthophosphate (> 68%). The reduction of ammonium were 84.5% and 35.3% for vertical Multi-Soil-Layering and vertical constructed wetland, respectively. The quality of the wastewater treated was evaluated in accordance with the standard of the rejection limit value adopted by Morocco.

Application of treated wastewater for cultivation of carnations

2013 ◽  
Vol 8 (3-4) ◽  
pp. 457-460 ◽  
Author(s):  
I. Petousi ◽  
N. Stavroulaki ◽  
M. Fountoulakis ◽  
M. Papadimitriou ◽  
E.I. Stentiford ◽  
...  
Keyword(s):  
Plant Growth ◽  
Domestic Wastewater ◽  
The Other ◽  
Treated Wastewater ◽  
Potted Plants ◽  
Quality Water ◽  
Water Scarce ◽  
Micro Elements ◽  
Positive Effect

The reuse of domestic wastewater for irrigation of floriculture crops is a very promising option in water-scarce areas. On the other hand, there are concerns about the effect of that kind low-quality water on plant growth. The present work examined the effect of irrigation with several type of treated domestic wastewater on production of carnations. Potted plants were irrigated with primary treated, secondary treated and tertiary treated wastewater as well as with water and water with fertilizer. The results shown that carnations can be irrigated with treated wastewater as the growth and quality of plant is equal or better compared with water. Furthermore, it was found that nutrients and micro-elements contained in treated wastewater had as a result positive effect on characteristics of carnations.

Domestic wastewater treatment in waste stabilization ponds for irrigation in Mendoza, Argentina: policies and challenges

2002 ◽  
Vol 45 (1) ◽  
pp. 127-132 ◽  
Author(s):  
O.R. Vélez ◽  
G.E. Fasciolo ◽  
A.V. Bertranou
Keyword(s):  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Water Shortages ◽  
Waste Stabilization Ponds ◽  
Domestic Wastewater Treatment ◽  
Waste Stabilization ◽  
Agricultural Applications ◽  
Agricultural Use ◽  
Domestic Effluents ◽  
Set Up

Arid areas call for imaginative water management solutions to avoid the dangers of water shortages. Growing demands of water for domestic and industrial uses decrease the availability of water for agriculture. It therefore becomes necessary to set up a policy for the use of domestic effluents. For the province of Mendoza, Argentina, with 1,500,000 inhabitants, a master plan was designed as of 1991 for the treatment of domestic effluents and subsequent disposal for irrigation. The guidelines set up by WHO for the use of wastewater in agricultural applications were taken into consideration. At present, the Province of Mendoza has available projects which are either complete, in execution or in the bidding process, entailing secondary treatment capacity with reuse of 320,000 cubic metres/day and an estimated possible irrigation area of 10,000 hectares. With this infrastructure, some strategic lines of action are recommended to establish a policy for the agricultural use of wastewater: (a) to program the use of treated wastewater to avoid discharges to irrigation flows; (b) to develop an institutional scheme for the efficient and safe use of these waters; and (c) develop scientific and technologic know-how to accompany the updated policies.

scholarly journals AN ANAEROBIC-AEROBIC BIOLOGICAL TREATMENT OF WASTEWATER AT THE LOW-PRODUCTIVITY PLANT

2020 ◽  
pp. 122-131
Author(s):  
L.A. Fesik ◽  
◽  
N.V. Sorokina ◽  
E.А. Geraskina ◽  
T.S. Airapetian ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Local Treatment ◽  
Experimental Studies ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Trophic Chain ◽  
Biological Purification ◽  
The Law

Abstract. The urgency of the problem of local biological treatment of domestic wastewater from housing in non-canalized areas with improving the quality of treated wastewater to the level of requirements for discharge into fishery bodies of water is considered. The analysis of the state of local wastewater treatment is given. Existing technological schemes and methods of local sewage, which are used for sewage treatment, are considered. The results of theoretical and experimental studies of a complex of a local anaerobic-aerobic biological treatment of domestic wastewater from housing in non-canalized areas at the low-productivity plants are presented. The results of theoretical and experimental researches of complex of local anaerobic-aerobic biological purification of domestic wastewater of habitation in non-canalized areas at the low-productivity plants are given. On the basis of the analysis of work and embodiment of low-productivity plants, used in home and foreign practice of local treatment of domestic wastewater the expediency of application flowing multistage anaerobic-aerobic biological purification of domestic wastewater with use of communities of attached and free-swimming microorganisms is shown. The proposed low-productivity plant, which includes a three-stage aerobic biological treatment of anaerobically treated wastewater is described. The use of ruff fillers for the retention of hydrobionts gives the opportunity to clear salvo discharge, rapid restoration of the activity of the ruff fillers (for example, in power outages). The ruff fillers make it possible to organize an appropriate trophic chain of hydrobionts, which dramatically reduces the amount of excess biomass and the removal of suspensions in treated wastewater. Using the experiments in laboratory conditions and at real industrial treatment plant of a new design there were received parameters of work of stages of anaerobic and aerobic biological purification, the law of nitrification and denitrification processes, the law of specific speed of oxidation of organic pollution in specific conditions of anaerobic-aerobic technology; the opportunity of reception of quality of treated wastewater at the level of the requirements of the specifications for dump of drains in fishing reservoirs is proved.

Composting of sewage sludge in a rotating vessel

1995 ◽  
Vol 32 (11) ◽  
pp. 121-125 ◽  
Author(s):  
M. Fürhacker ◽  
R. Haberl
Keyword(s):  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Domestic Wastewater ◽  
Control Programme ◽  
Domestic Wastewater Treatment ◽  
Inorganic Content ◽  
Plant Test ◽  
Agricultural Use ◽  
Intensive Control

Composting of sewage sludge can enhance its quality and suitability for agricultural use. In this work the optimal conditions for composting sewage sludge of small domestic wastewater treatment plants in a rotating vessel with the aim of sanitary safety were investigated. An intensive control programme with regard to viruses, bacteria and parasites was carried out that showed that the hygienic quality was satisfactory. A second aspect was the investigation of a possible reduction of hazardous organic and inorganic pollutants. The amount of inorganic micropollutants was low and did not change based on inorganic content. Based on inorganic residues, losses of 15.7% of the AOX and 25% of the EOX could be found. Relatively high decreasing rates of detergent concentrations could be measured. Only 31.1% of the original load of anionic detergents (measured as MBAS), 38.7% of the cationic and 57.4% of the non-ionic detergents could be detected in the end material. For PAH concentration reduction between 31.5% of fluoranthene and 90.6% benzo(a)pyrene can be reported. All values are based on the inorganic residues. The quality of the resulting compost showed in the plant test a growth rate which qualified the compost to be used to increase soil quality.

Feasibility of contact aeration method for small-scale domestic wastewater treatment system in rural China

2012 ◽  
Vol 7 (2) ◽  
Author(s):  
T. Kuyama ◽  
M. Mizuochi ◽  
H. Koyanagi ◽  
T. Wako
Keyword(s):  
Wastewater Treatment ◽  
Rural Areas ◽  
Wastewater Treatment Plants ◽  
Rural China ◽  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Small Scale ◽  
Billing System ◽  
Domestic Wastewater Treatment ◽  
Treatment Facilities

This study examines the feasibility of the contact aeration method for utilisation in small-scale domestic wastewater treatment facilities in various rural areas of China, where the national government starts to address the water pollution issue. Three pilot facilities using the contact aeration method with different capacities were constructed, operated and monitored in Chongqing city and Jiangsu province. In order to evaluate the feasibility of the constructed facilities, the quality of treated wastewater and the operational cost were monitored. Results obtained from the monitoring showed that BOD and COD effluent concentrations achieved quality targets in all facilities. As for the other pollutants, quality targets were met for most of the period. Operational costs of facilities bettered those set for the facility in the town of Baiyang and new village of Zhaojia, but exceeded them for the facility in the village of Dongbei. The main reasons for the differences were the electricity billing system and operational system for each facility. In order to promote small-scale aeration-based domestic wastewater treatment plants in rural China in the future, the issue of what constitutes efficient facility maintenance first needs to be addressed.

scholarly journals STUDI PENGOLAHAN LIMBAH CAIR DOMESTIK DENGAN BIOFILTER MEDIA IJUK

2021 ◽  
Vol 8 (2) ◽  
pp. 360
Author(s):  
I Wayan Eka Parama Putra ◽  
I Gede Herry Purnama
Keyword(s):  
Domestic Wastewater ◽  
Primary Data ◽  
Test Results ◽  
Average Value ◽  
Domestic Wastewater Treatment ◽  
Laboratory Test Results ◽  
Quasi Experimental ◽  
Parameter Values ◽  
System Effectiveness

ABSTRAK Hotel di kawasan pariwisata merupakan salah satu sumber penghasil limbah cair domestik. Pengolahan limbah cair domestik dilakukan untuk mencegah terjadinya pencemaran lingkungan. Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan ijuk sebagai media biofilter untuk mengolah limbah cair domestik dari hotel. Desain penelitian yang digunakan adalah kuasi eksperimental. Data yang digunakan pada penelitian ini adalah data primer dari hasil pengujian laboratorium. Pada penelitian ini parameter yang akan diteliti adalah BOD5, COD, TDS, dan pH. Berdasarkan sampel yang diambil di salah satu hotel di Kota Denpasar, nilai rata-rata parameternya antara lain: BOD5 sebesar 86,71 mg/L, COD sebesar 122,3 mg/L, TDS sebesar 529 mg/L, dan pH 8. Sebelum diuji dilakukan seeding selama 2 minggu untuk menumbuhkan bakteri di dalam reaktor. Efektivitas sistem yang diperoleh selama 5 minggu pengujian memiliki nilai rata-rata sebesar 33,05%, dengan persentase efektivitas penurunan parameter pencemar antara lain: BOD sebesar 46,47%, COD sebesar 39,88%, TDS sebesar 12,81%. Terdapat beberapa faktor yang mempengaruhi kinerja reaktor seperti: air limbah yang dipergunakan memiliki kualitas yang fluktuatif, cara penyusunan media biofilter, dan kondisi lingkungan saat penelitian dilakukan. Kata Kunci: Ijuk, Biofilter, Air Limbah Domestik ABSTRACT Hotels in tourism areas are a source of domestic wastewater. Domestic wastewater treatment is carried out to prevent environmental pollution. This study aims to determine the effectiveness of using palm fiber as a biofilter medium to treat domestic wastewater from hotels. The research design used was quasi experimental. The data used in this study are primary data from laboratory test results. In this study, the parameters to be studied are BOD2, COD, TDS, and pH. Based on samples taken at a hotel in Denpasar City, the average parameter values include: BOD5 of 86.71 mg/L, COD of 122.3 mg/L, TDS of 529 mg/L, and pH of 8. Before being tested, seeding was carried out for 2 weeks to grow bacteria in the reactor. The system effectiveness obtained during the 5 weeks of testing has an average value of 33.05%, with the percentage of effectiveness of decreasing pollutant parameters, among others: BOD of 46.47%, COD of 39.88%, TDS of 12.81%. There are several factors that affect the performance of the reactor, such as: the quality of the wastewater used is fluctuating, the way the biofilter media is prepared, and the environmental conditions when the research is carried out. Keywords: Palm Fibers, Biofilter, Domestic Wastewater

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.

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