The ability of bacterial cultures to create biofilm brings a possibility enhance biological wastewater treatment efficiency. Moreover, the Anammox and Nitrosomonas species grow within same layer enabled one-stage system for nitrogen removal be designed. Such system, with Kaldnes rings as carriers growth, was tested in technical pilot plant scale (2.1 m3) at Himmerfjärden Waste Water Treatment Plant (WWTP) Stockholm region. directly supplied supernatant originating from dewatering digested...

Volatile fatty acids (VFAs) production is attracting interest as a sustainable approach to maximize resource recovery from organic wastes. This study explored the interlink between long-term system resilience of VFA primary sludge (PS) and external waste (OW) without pH control microbial community dynamics well effect substrate variability. The elucidated practicality using VFA-rich effluent carbon source for wastewater denitrification. A 15 L bench-scale semi-continuous reactor was operated...

One-year (2004) comprehensive investigations in a semi-industrial pilot plant (5 m3) were carried out with the aim of assessing influence operational parameters on partial nitritation/Anammox system performance. In designed as moving-bed biofilm reactor, influent nitrogen load to Anammox reactor was progressively increased and stable bacterial culture obtained. Interaction between subsequent aerobic anaerobic conditions nitritation reactors, respectively, granted remove through nitrite...

A biofilm system with Kaldnes carrier was used in these studies to cultivate bacteria responsible for both partial nitritation and Anammox processes. Due co-existence of oxygen oxygen-free zones within the depth, processes can occur a single reactor. Oxygen that inhibits process is consumed outer layer this way are protected from oxygen. The impact concentration on nitrogen removal rates investigated pilot plant (2.1 m3), supplied reject water Himmerfjärden Waste Water Treatment Plant....

In a deammonification process applied in the moving bed biofilm reactor (MBBR) oxygen is crucial parameter for performance and efficiency. The objective of this study was to investigate different aeration strategies, characterised by ratio between non-aerated aerated phase times (R) dissolved concentrations (DO). series batch tests were conducted with variable DO (2, 3, 4 mg L−1) R values (0-continuous aeration; 1/3, 1, 3-intermittent aeration) but same initial ammonium concentration, volume...

A bacterial strain capable of growing on propachlor (2-chloro-N-isopropylacetanilide) was isolated from soil by using enrichment and isolation techniques. The isolated, designated GCH1, classified as a member the genus Pseudomonas. Washed-cell suspensions GCH1 accumulated N-isopropylacetanilide, acetanilide, acetamide, catechol. Pseudomonas grew with generation time 4.2 h rate substrate utilization 1.75 +/- 0.15 micromol h(-1). Gene expression did not require induction but subject to...

The city of Nowy Targ located in Poland's highland operates the WWTP with classic SBR technology. In winter some decrease process efficiency was observed. research described paper aimed at using computer simulation to adjust cycle length and structure order minimize effects low wastewater temperature on biological CNP removal. simulations performed 6 degrees C showed that switching from 8 hours extension aeration phase 2.75 5 will increase effectiveness nitrification phosphorus change...

Seeding of nitrifying bacteria into the activated sludge process was studied both theoretically and experimentally. A simple model developed for prediction effects seeding from a separate stage process. The purpose is to improve treatment results stability as well decrease volume requirements Pilot plant studies were carried out at Uppsala municipal wastewater in order evaluate seeding. One line supplied with supernatant dewatering digested nitrification gave an high fraction bacteria,...

Traditional nitrification/denitrification is not suitable for nitrogen removal when wastewater contains high concentrations of ammonium and low biodegradable carbon. Recently, a deammonification process was developed proposed as new technology treatment such streams. This relies on stable interaction between aerobic bacteria Nitrosomonas, that accomplish partial nitritation anaerobic Planctomycetales, which conduct the Anammox reaction. Simultaneous performance these two processes can lead...

Biological nitrogen removal in activated sludge processes is dependent on sufficient supplies of easily metabolized carbon compounds for the denitrifying bacterial population. An external source can increase denitrification rates and compensate deficiencies influent C/N ratio. Plant performance microbial adaptation were studied a pre-denitrifying pilot-scale plant with without ethanol. Total efficiency was 67 35% ethanol reference line, respectively. The process responded rapidly to but one...

In the paper, extension of mathematical model partial nitritation-anammox process in a moving bed biofilm reactor (MBBR) is presented. The was calibrated with set kinetic, stoichiometric and parameters, whose values were taken from literature batch tests. validated data obtained from: laboratory experiments, pilot-scale MBBR for reject water deammonification operated at Himmerfjärden wastewater treatment mainstream Hammarby Sjöstadsverk research facility, Sweden. Simulations conducted...

The wastewater treatment plant (WWTP) in Nowy Targ, Poland, is the largest Europe based on classical sequencing batch reactor (SBR) technology. was completed April 1995 as one of essential elements a program for protection water quality Czorsztyn Reservoir. process technology designed application to typical municipal with separate unit treat tannery containing chromium. Experience from operation showed that inflow WWTP included increasing chromium concentrations, caused by poor management...

An attractive method for post-denitrification may be the use of sand filters. In this paper, a description and evaluation are given full scale studies continuous filter combined removal suspended solids, phosphorus nitrogen. Experiments were performed using methanol as carbon source denitrification ferric chloride an improved removal. The studied was DynaSand marketed by Nordic Water Products AB. has surface area 4.7 m2 maximum possible bed height 6 m. consisted with 1.2-2 mm grain size....

Nowadays, as the effluent water regulations become more stringent, there is a need to treat wastewater in most efficient manner and according sustainability principles. One of possibilities meet this challenge treatment side streams, which are usually returned main influent Wastewater Treatment Plants (WWTP) increasing total load. Following processes occurring natural ecosystems new biological technology - combination partial nitritation Anammox for nitrogen-rich supernatant coming from...

Many earlier publication presented the lowest temperature of 10°C as feasible for nitrification process. The article evaluates long-term experience with biological nitrogen removal at low temperatures (between 2 and 10°C), studied four wastewater treatment plants operated SBR-technology: Holbaek (Denmark), Nowy Targ (Poland), Nynäshamn Skaulo (Sweden). Influence if loads COD/N ratio on rate was studied. Despite operation during 3–4 months year good relation between load specific has been...

Research Article| December 01 2011 Characteristics of natural organic matter and formation chlorination by-products at Masaka waterworks H. M. Kalibbala; Kalibbala 1Department Civil & Environmental Engineering, College Design, Art Technology, Makerere University, P.O. Box 7062, Kampala, Uganda E-mail: hkalibbala@tech.mak.ac.ug Search for other works by this author on: This Site PubMed Google Scholar Rose Kaggwa; Kaggwa 2External Services, National Water Sewerage Corporation, 7053, O....

Research Article| August 01 1998 Strategies for improvement of sludge quality and process performance sequencing batch reactor plant treating municipal tannery wastewater M. Kabacinski; Kabacinski *Water Sewage Works, ul. Polna 51, 34-400 Nowy Targ, Poland Search other works by this author on: This Site PubMed Google Scholar B. Hultman; Hultman **Division Water Resources Engineering, Royal Institute Technology, S-100 44 Stockholm, Sweden E. Plaza; Plaza J. Trela Sci Technol (1998) 38 (4-5):...

The wastewater treatment plant (WWTP) in Nowy Targ, Poland, is the largest Europe based on classical sequencing batch reactor (SBR) technology. was completed April 1995 as one of essential elements a program for protection water quality Czorsztyn Reservoir. process technology designed application to typical municipal with separate unit treat tannery containing chromium. Experience from operation showed that inflow WWTP included increasing chromium concentrations, caused by poor management...

Advanced process technology has been implemented at newly built wastewater treatment plants in Central and Eastern Europe. The plant (WWTP) Nowy Targ, Poland, the largest Europe based on sequencing batch reactor (SBR) technology, shown that constructed must be integrated into system of water, wastewater, sludge management city region. A significant supply tannery with increasing chromium concentrations influent to WWTP resulted many operational problems related mainly treatment. Evaluation...

Biological nitrogen removal in activated sludge processes is dependent on sufficient supplies of easily metabolized carbon compounds for the denitrifying bacterial population. An external source can increase denitrification rates and compensate deficiencies influent C/N ratio. Plant performance microbial adaptation were studied a pre-denitrifying pilot-scale plant with without ethanol. Total efficiency was 67 35% ethanol reference line, respectively. The process responded rapidly to but one...

The article presents two aspects of sludge management: regional planning and product recovery. introduction these elements can reduce the cost, close ecocycle make management more sustainable. A spreadsheet program to optimize location different facilities is presented. simple example shows potential model. brief comparison formal problems concerning disposal in Poland Sweden also discussed. Requirements phosphorus recovery recycling phosphate industry fractionation combination with a new...