scholarly journals RESEARCH OF WASTEWATER TERTIARY TREATMENT / TRETINIO NUOTEKŲ VALYMO TYRIMAI

2018 ◽  
Vol 10 (0) ◽  
pp. 1-6
Author(s):  
Nino Tabatadze ◽  
Rasa Vaiškūnaitė ◽  
Aušra Mažeikienė
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Foam Glass ◽  
Ammonium Nitrogen ◽  
Tertiary Treatment ◽  
Small Individual ◽  
Water Problem ◽  
Household Wastewater ◽  
Individual Household ◽  
Wastewater Tertiary Treatment

Small individual household wastewater treatment plants not always operate well. Consequently, the concentrations of ammonium nitrogen and phosphate phosphorus are exceeded. The aim of the work was to found the most effective material for wastewater tertiary treatment and propose environmentally friendly ways to solve fresh water problem. Three filter fillings (foam-glass, zeolite and biochar) were tested. As a result, we have got a following conclusion, foam-glass removed phosphate phosphorus most effectively (efficacy – 14−91%) and against ammonium nitrogen, comparatively effective was zeolite (efficacy – 29−100%). Santrauka Individualaus buitinių nuotekų valymo įrenginiai ne visada dirba efektyviai. Dėl to fiksuojami nitratų azoto, amonio azoto, bendrojo azoto, bendrojo fosforo ir fosfatų fosforo koncentracijų išvalytose nuotekose viršijimai. Darbo tikslas surasti efektyvias medžiagas tretiniam nuotekų valymui ir pasiūlyti šiai problemai spręsti aplinkai draugiškas technologijas, kad išvalytos nuotekos nepakenktų aplinkos kokybei. Buvo tirti trys filtro užpildai (pustiklis, ceolitas, bioanglis). Gauti rezultatai ir išvados, kad pustiklis efektyviau (efektyvumas – 14−91%) šalina iš nuotekų fosfatų fosforą, o ceolitas – amonio azotą (efektyvumas – 29−100 %).

scholarly journals EXPERIMENTAL STUDY OF TERTIARY TREATMENT OF WASTEWATER USING ZEOLITE

2020 ◽  
Author(s):  
Nino Tabatadze ◽  
Rasa Vaiškūnaitė ◽  
Aušra Mažeikienė
Keyword(s):  
Wastewater Treatment Plants ◽  
Filter Material ◽  
Ammonium Nitrogen ◽  
Tertiary Treatment ◽  
Small Individual ◽  
Water Problem ◽  
Household Wastewater ◽  
Filtering Efficiency ◽  
Individual Household ◽  
Wastewater Tertiary Treatment

Small individual household wastewater treatment plants not always operate well. Consequently, the concentrations of ammonium nitrogen and phosphate phosphorus are exceeded. The aim of the work was to examine the zeolite as a wastewater tertiary treatment material and propose environmentally friendly ways to solve fresh water problem. During experiment zeolite filter material was tested. In the article is analyzed zeolite filtering efficiency of nutrient removal from wastewater. Zeolite filler most effective was against ammonium nitrogen (99.9–10.1%) and relatively less effective against phosphate phosphorus (51.2–4.9%).

scholarly journals Improving and upgrading an existing activated sludge with a compact MBBR – disc filters parallel line for municipal wastewater treatment in touristic alpine areas

2020 ◽  
Vol 15 (2) ◽  
pp. 515-527
Author(s):  
L. Desa ◽  
P. Kängsepp ◽  
L. Quadri ◽  
G. Bellotti ◽  
K. Sørensen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Oxygen Demand ◽  
Parallel Line ◽  
Ammonium Nitrogen ◽  
Biofilm Reactor ◽  
Municipal Wastewater Treatment ◽  
Yearly Average

Abstract Many wastewater treatment plants (WWTP) in touristic areas struggle to achieve the effluent requirements due to seasonal variations in population. In alpine areas, the climate also determines a low wastewater temperature, which implies long sludge retention time (SRT) needed for the growth of nitrifying biomass in conventional activated sludge (CAS). Moreover, combined sewers generate high flow and dilution. The present study shows how the treatment efficiency of an existing CAS plant with tertiary treatment can be upgraded by adding a compact line in parallel, consisting of a Moving Bed Biofilm Reactor (MBBR)-coagulation-flocculation-disc filtration. This allows the treatment of influent variations in the MBBR and a constant flow supply to the activated sludge. The performance of the new 2-step process was comparable to that of the improved existing one. Regardless significant variations in flow (10,000–25,000 m3/d) and total suspended solids (TSS) (50–300 mg/L after primary treatment) the effluent quality fulfilled the discharge requirements. Based on yearly average effluent data, TSS were 11 mg/L, chemical oxygen demand (COD) 27 mg/L and total phosphorus (TP) 0.8 mg/L. After the upgrade, ammonium nitrogen (NH4-N) dropped from 4.9 mg/L to 1.3 mg/L and the chemical consumption for phosphorus removal was reduced.

Identification of pathogen bacteria and protozoa in treated urban wastewaters discharged in the Ebro River (Spain): water reuse possibilities

2013 ◽  
Vol 68 (3) ◽  
pp. 575-583 ◽  
Author(s):  
R. Mosteo ◽  
M. P. Ormad ◽  
P. Goñi ◽  
J. Rodríguez-Chueca ◽  
A. García ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Water Reuse ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Research Work ◽  
Municipal Wastewater Treatment ◽  
Tertiary Treatment ◽  
Salmonella Spp ◽  
Free Living ◽  
Municipal Wastewater Treatment Plants

The aim of this research work is to identify the presence of pathogens, bacteria and protozoa, in different treated urban wastewaters and to relate biological pollution with the processes used in wastewater treatment plants. A study of the possibilities for water reuse is carried out taking into account bacterial and parasite composition. The analysed bacteria and protozoa are: Enterococcus faecalis, Pseudomonas aeruginosa, Staphylococcus aureus, Clostridium perfringens (spore), Salmonella spp., Legionella spp., helminths eggs, Giardia, Cryptosporidium spp. and free-living amoebae (FLA). The selected municipal wastewater treatment plants (MWTPs) are located in Navarra (Spain) and the main difference between them is the use of natural lagoons as tertiary treatment in some plants. The results concerning bacteriological identification showed contamination of mainly faecal origin, and the use of natural lagoons as tertiary treatment in some MWTPs produced an important disinfection effect. Moreover, pathogen parasites such as Giardia and Cryptosporidium were not detected in the samples studied although FLA were identified in all cases.

scholarly journals PENGGUNAAN MEDIA SERAT PLASTIK PADA PROSES BIOFILTER TERCELUP UNTUK PENGOLAHAN AIR LIMBAH RUMAH TANGGA NON TOILET

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Nusa Idaman Said
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Low Cost ◽  
Domestic Wastewater ◽  
Treated Water ◽  
Household Wastewater ◽  
Individual Household ◽  
Plan Study ◽  
Show Difference

Water pollution in the big cities in Indonesia, especially in DKI Jakarta has shown serious problems. One of the potential sources of water pollution is domestic wastewater that is wastewater from kitchens, laundry, bathing and toilets. These problems have become more serious since the spreads of sewerage systems are still low, so that domestic, institutional and commercial wastewater causes severe water pollution in many rivers or shallow ground water. Based on the fact that the progress of development of sewerage system is still low, it is important to develop low cost technology for individual house hold or semi communal wastewater treatment such as using anaerobic and aerobic submerged biofilter. This paper describes the pilot plan study of individual household wastewater treatment using anaerobic and aerobic submerged biofilter using plastic fiber media. The raw wastewater in this experiment was from household wastewater. Results of experiment shows that under operating condition 12-24 hours hydraulic retention time, the treated water was physically very clear, and according on chemical analysis the removal efficiency of BOD is 73.24 – 94.92 %, COD 65.80 – 90.76 %, total suspended solids (TSS) 95.60 – 97.69 %, and detergent (MBAS) 56.80 – 88.51 %, respectively. Compared to attempt by using charcoal media, the quality of treated water did not show  difference significantly.  Kata Kunci  : Limbah domestik non toilet, biofilter anaerob-aerob, media serat palstik.

scholarly journals Prediction of Wastewater Quality at a Wastewater Treatment Plant Inlet Using a System Based on Machine Learning Methods

Processes ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 85
Author(s):  
Barbara Wodecka ◽  
Jakub Drewnowski ◽  
Anita Białek ◽  
Ewa Łazuka ◽  
Joanna Szulżyk-Cieplak
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Ammonium Nitrogen ◽  
Support Vector ◽  
Process Conditions ◽  
Wastewater Quality

One of the important factors determining the biochemical processes in bioreactors is the quality of the wastewater inflow to the wastewater treatment plant (WWTP). Information on the quality of wastewater, sufficiently in advance, makes it possible to properly select bioreactor settings to obtain optimal process conditions. This paper presents the use of classification models to predict the variability of wastewater quality at the inflow to wastewater treatment plants, the values of which depend only on the amount of inflowing wastewater. The methodology of an expert system to predict selected indicators of wastewater quality at the inflow to the treatment plant (biochemical oxygen demand, chemical oxygen demand, total suspended solids, and ammonium nitrogen) on the example of a selected WWTP—Sitkówka Nowiny, was presented. In the considered system concept, a division of the values of measured wastewater quality indices into lower (reduced values of indicators in relation to average), average (typical and most common values), and upper (increased values) were adopted. On the basis of the calculations performed, it was found that the values of the selected wastewater quality indicators can be identified with sufficient accuracy by means of the determined statistical models based on the support vector machines and boosted trees methods.

scholarly journals Operating household wastewater treatment plants in the light of binding quality standards for wastewater discharged to water bodies or to soil

2017 ◽  
Vol 32 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Bartosz Jawecki ◽  
Katarzyna Pawęska ◽  
Marcin Sobota
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Quality Standards ◽  
Adverse Impact ◽  
Treatment Efficiency ◽  
Legal Requirements ◽  
Household Wastewater

Abstract The study presents the legal requirements concerning the quality of wastewater discharged to waterbodies and to soil after treatment in household wastewater treatment plants located in agglomerations or outside them. The procedure of stopping the operation of a household treatment plant that doesn’t meet the statutory wastewater treatment efficiency was presented. The decision ordering to stop the use of a household wastewater treatment plant has to be preceded by a decision ordering to take measures to limit its adverse impact on the environment. The clarification procedure has to determine the adverse impact on the environment in a doubtless manner and it has to be reflected in the documentation. The assessment of adverse impact should take into account the binding standards of use of the environment. Stopping the operation of a household wastewater treatment plant may result in issuing a decision ordering the user to connect to the sanitary sewage system.

scholarly journals The Influence of Household Wastewater Treatment Plants with Drainage System on the Quality of Groundwater in the Lublin Province, Poland

2021 ◽  
Vol 22 (3) ◽  
pp. 18-39
Author(s):  
Krzysztof Jóżwiakowski ◽  
Michał Marzec ◽  
Agnieszka Listosz ◽  
Magdalena Gizińska-Górna ◽  
Agnieszka Micek ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Drainage System ◽  
Household Wastewater
Sign in / Sign up

Export Citation Format

Share Document