scholarly journals Protection of River Sitnica From Urban Wastewaters

2021 ◽  
Vol 2 (2) ◽  
pp. 35-38
Author(s):  
Besime Sh. Kajtazi ◽  
Tania Floqi
Keyword(s):  
Wastewater Treatment ◽  
Urban Areas ◽  
Wastewater Treatment Plants ◽  
Ecological Status ◽  
Treatment Plant ◽  
Main River ◽  
Receiving Waters ◽  
European Standards ◽  
Water Strategy ◽  
Urban Wastewater Treatment

Wastewater treatment is a growing problem in Kosovo. Pollution from urban wastewaters poses the greatest pressure on Kosovo rivers and their better management represents an important area of improving their ecological status. Kosovo is lacking behind in terms of achieving certain goals and implementing European Environmental Directives, especially the Water Framework Directive and Urban Wastewater Treatment Directive. The lack of wastewater treatment prior to their discharges into receiving waters presents a gap in the water sector which needs to be addressed in order to meet European standards. Kosovo, as a country with a European perspective, must approach this issue as soon as possible. According to the reports of water utilities companies, the level of sewerage services in the country is 65% while the level of wastewater treatment is 0.7% [3]. The National Water Strategy [1] aims at protecting water resources through treating wastewater before returning to the nature. According to this strategy, a number of wastewater treatment plants and accompanying infrastructure for main cities should be build. River Sitnica is main river stretching in Kosovo valley, where main urban areas are located including capital Prishtina. With aim of protection the quality of river Sitnica, a study for collection of sewage and wastewater treatment plant for capital Prishtina was prepared and its findings will be presented in this article.

scholarly journals Removal of Nitrogen and Phosphorus from Thickening Effluent of an Urban Wastewater Treatment Plant by an Isolated Green Microalga

Plants ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1802
Author(s):  
Costanza Baldisserotto ◽  
Sara Demaria ◽  
Ornella Accoto ◽  
Roberta Marchesini ◽  
Marcello Zanella ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Synthetic Medium ◽  
Photosynthetic Pigment ◽  
Treatment Plant ◽  
Comparative Approach ◽  
Urban Wastewater ◽  
Nitrogen And Phosphorus ◽  
Wide Range ◽  
Urban Wastewater Treatment

Microalgae are photosynthetic microorganisms and are considered excellent candidates for a wide range of biotechnological applications, including the removal of nutrients from urban wastewaters, which they can recover and convert into biomass. Microalgae-based systems can be integrated into conventional urban wastewater treatment plants (WW-TP) to improve the water depuration process. However, microalgal strain selection represents a crucial step for effective phytoremediation. In this work, a microalga isolated from the effluent derived from the thickening stage of waste sludge of an urban WW-TP was selected and tested to highlight its potential for nutrient removal. Ammonium and phosphate abatements by microalgae were evaluated using both the effluent and a synthetic medium in a comparative approach. Parallelly, the isolate was characterized in terms of growth capability, morphology, photosynthetic pigment content and photosystem II maximum quantum yield. The isolated microalga showed surprisingly high biomass yield and removal efficiency of both ammonium and phosphate ions from the effluent but not from the synthetic medium. This suggests its clear preference to grow in the effluent, linked to the overall characteristics of this matrix. Moreover, biomass from microalgae cultivated in wastewater was enriched in photosynthetic pigments, polyphosphates, proteins and starch, but not lipids, suggesting its possible use as a biofertilizer.

scholarly journals Analysis of Combined Sewer Flow Storage Scenarios Prior to Wastewater Treatment Plant

2018 ◽  
Vol 25 (4) ◽  
pp. 619-630 ◽  
Author(s):  
Grażyna Sakson ◽  
Marek Zawilski ◽  
Agnieszka Brzezińska
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Storage Tank ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Real Time Control ◽  
Combined Sewer Overflows ◽  
Combined Sewer ◽  
Receiving Waters ◽  
Wet Weather

Abstract Combined sewer systems in cities are increasingly equipped with additional storage facilities or other installations necessary for keeping the wastewater treatment plants from overloading during wet weather and reducing combined sewer overflows into receiving waters. Effective methods for reducing such negative phenomena include the temporary storage of wet weather flow in an end-of-pipe separate tank or in a sewer system. In this paper, four scenarios of wastewater storage for the Group Wastewater Treatment Plant (GWWTP) in Lodz (Poland) have been analysed: a storage in a separate single tank located in GWWTP, a storage in the bypass channel in GWWTP, in-sewer storage, and a combination of the aforementioned variants, also with real time control (RTC) system introduced. The basic calculations were performed using the EPA’s SWMM software for the period of 5 years (2004-2008). The chosen solution - storage in a separate storage tank - has been verified based on the inflow dataset from the years 2009-2013. The specific volume of the separate storage tank should be at least 22 m3 per hectare of impervious catchment area, but it could be reduced if additional in-sewer storage with RTC were introduced. Both options allow the effective protection of receiving waters against discharge of untreated sewage during wet weather.

Dynamic simulation for upgrading of wastewater treatment plants—an assessment of treatment plant performance with regard to the EC-directive concerning urban wastewater treatment

1998 ◽  
Vol 37 (9) ◽  
pp. 73-79
Author(s):  
A. Sintic ◽  
T. Rolfs ◽  
M. Freund ◽  
E. Dorgeloh
Keyword(s):  
Wastewater Treatment ◽  
Dynamic Simulation ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
German Law ◽  
Plant Performance ◽  
Municipal Wastewater Treatment ◽  
Urban Wastewater ◽  
Urban Wastewater Treatment

This paper shows how the dynamic simulation of municipal wastewater treatment plants can be used for assessing the performance of a plant under different legal requirements. In this study, the situation is described, when it was uncertain, how the requirements of the German law (ARA-V 1991) would be adapted to the requirements given by the EC-directive concerning urban wastewater treatment (EC directive, 1991). The requirements of these two are compared to each other. A simulation study is described, in which the future results of a plant to be extended are calculated for the period of one year. It is shown that, concerning the effluent concentrations of ammonia and total nitrogen, this plant will be able to meet both laws.

scholarly journals Circular Economy in Wastewater Treatment Plant–Challenges and Barriers

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 614 ◽  
Author(s):  
Ewa Neczaj ◽  
Anna Grosser
Keyword(s):  
Wastewater Treatment ◽  
Circular Economy ◽  
Wastewater Treatment Plants ◽  
Smart Cities ◽  
Treatment Plant ◽  
Current Trends ◽  
Important Player ◽  
Ecologically Sustainable ◽  
Urban Wastewater Treatment ◽  
Near Future

The urban wastewater treatment plants can be an important part of circular sustainability due to integration of energy production and resource recovery during clean water production. Currently the main drivers for developing wastewater industry are global nutrient needs and water and energy recovery from wastewater. The article presents current trends in wastewater treatment plants development based on Circular Economy assumptions, challenges and barriers which prevent the implementation of the CE and Smart Cities concept with WWTPs as an important player. WWTPs in the near future are to become “ecologically sustainable” technological systems and a very important nexus in SMART cities.

Temporal variations and trends in loads of commonly used pharmaceuticals to large wastewater treatment plants in Sweden, a case study (Ryaverket)

2016 ◽  
Vol 73 (12) ◽  
pp. 3049-3056 ◽  
Author(s):  
N. Paxéus ◽  
K. Bester ◽  
Haitham El-taliawy
Keyword(s):  
Wastewater Treatment ◽  
Large Scale ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Quality Standards ◽  
Temporal Variations ◽  
Chemical Analyses ◽  
Receiving Waters ◽  
The Eu

Abstract Loads of individual commonly used analgesics (ibuprofen, diclofenac), antibiotics (sulfamethoxazole, trimethoprim), β-blockers (atenolol, metoprolol, sotalol, propranolol) and neuroleptics (carbamazepine, citalopram) to a large-scale operating wastewater treatment plant (WWTP) in Sweden (Ryaverket) were studied by monitoring concentrations and flows during a 9-year period (2006–2015). Variations in loads due to sampling and possible errors in chemical analyses were estimated to be below 40%. The variations in loads were analyzed and discussed in terms of the design of collecting wastewater system as an integrated part of the water treatment at the WWTP as well as the prescription and use of individual pharmaceuticals. Trend analysis in daily loads of individual pharmaceuticals indicated an increase for diclofenac, no significant changes for ibuprofen and metoprolol and a decrease for the other pharmaceuticals. The latter was ascribed to a decrease in their prescription and use. The increase in loads of diclofenac was ascribed to its growing topical use not requiring prescription. In view of future regulations by the EU, growing loads of diclofenac to WWTPs and its low removal rates in WWTPs may require an upgrade of WWTPs to achieve quality standards for diclofenac in receiving waters.

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

Sludge minimization by disintegration at different wastewater treatment plants

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
Luchien Luning ◽  
Paul Roeleveld ◽  
Victor W.M. Claessen
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Anaerobic Digestion ◽  
Sewage Sludge ◽  
New Technologies ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Biological Degradation ◽  
Ongoing Research ◽  
Sludge Minimization

In recent years new technologies have been developed to improve the biological degradation of sewage sludge by anaerobic digestion. The paper describes the results of a demonstration of ultrasonic disintegration on the Dutch Wastewater Treatment Plant (WWTP) Land van Cuijk. The effect on the degradation of organic matter is presented, together with the effect on the dewatering characteristics. Recommendations are presented for establishing research conditions in which the effect of sludge disintegration can be determined in a more direct way that is less sensitive to changing conditions in the operation of the WWTP. These recommendations have been implemented in the ongoing research in the Netherlands supported by the National Institute for wastewater research (STOWA).

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