scholarly journals Shortcut nitrification/partial nitritation start-up for reject water treatment in a SBR

2017 ◽  
Vol 22 ◽  
pp. 00121
Author(s):  
Mateusz Muszyński-Huhajło ◽  
Stanisław Miodoński
Keyword(s):  
Water Treatment ◽  
Partial Nitritation ◽  
Reject Water ◽  
Start Up

How biomass growth mode affects ammonium oxidation start-up and NOB inhibition in the partial nitritation of cold and diluted reject water

2017 ◽  
Vol 40 (6) ◽  
pp. 673-682 ◽  
Author(s):  
V. Kouba ◽  
P. Svehla ◽  
M. Catrysse ◽  
L. Prochazkova ◽  
H. Radechovska ◽  
...  
Keyword(s):  
Growth Mode ◽  
Biomass Growth ◽  
Ammonium Oxidation ◽  
Partial Nitritation ◽  
Reject Water ◽  
Start Up

Startup and performance of a novel single-stage partial nitritation/anammox system for reject water treatment

2021 ◽  
Vol 321 ◽  
pp. 124432
Author(s):  
Yunzhi Qian ◽  
Yanmei Ding ◽  
Huaji Ma ◽  
Yongzhi Chi ◽  
Hongying Yuan ◽  
...  
Keyword(s):  
Water Treatment ◽  
Single Stage ◽  
Partial Nitritation ◽  
Reject Water ◽  
And Performance

Rapid start-up of one-stage deammonification MBBR without addition of external inoculum

2016 ◽  
Vol 74 (11) ◽  
pp. 2541-2550 ◽  
Author(s):  
Linda Kanders ◽  
Daniel Ling ◽  
Emma Nehrenheim
Keyword(s):  
Wastewater Treatment Plants ◽  
Full Scale ◽  
Anammox Bacteria ◽  
Operational Mode ◽  
Bacterial Populations ◽  
Reject Water ◽  
One Stage ◽  
Start Up ◽  
Laboratory Reactor ◽  
Set Up

In recent years, the anammox process has emerged as a useful method for robust and efficient nitrogen removal in wastewater treatment plants (WWTPs). This paper evaluates a one-stage deammonification (nitritation and anammox) start-up using carrier material without using anammox inoculum. A continuous laboratory-scale process was followed by full-scale operation with reject water from the digesters at Bekkelaget WWTP in Oslo, Norway. A third laboratory reactor was run in operational mode to verify the suitability of reject water from thermophilic digestion for the deammonification process. The two start-ups presented were run with indigenous bacterial populations, intermittent aeration and dilution, to favour growth of the anammox bacterial branches. Evaluation was done by chemical and fluorescence in situ hybridization analyses. The results demonstrate that anammox culture can be set up in a one-stage process only using indigenous anammox bacteria and that a full-scale start-up process can be completed in less than 120 days.

scholarly journals Cost and financial sustainability of a household-based water treatment and storage intervention in Zambia

2007 ◽  
Vol 5 (3) ◽  
pp. 385-394 ◽  
Author(s):  
Anyana Banerjee ◽  
Deborah A. McFarland ◽  
Ritu Singh ◽  
Robert Quick
Keyword(s):  
Water Treatment ◽  
Water System ◽  
Financial Loss ◽  
Household Water Treatment ◽  
Safe Water ◽  
Start Up ◽  
Household Water ◽  
Before And After ◽  
Program Costs ◽  
And Behavior

Providing safe water to >1 billion people in need is a major challenge. To address this need, the Safe Water System (SWS) - household water treatment with dilute bleach, safe water storage, and behavior change - has been implemented in >20 countries. To assess the potential sustainability of the SWS, we analyzed costs in Zambia of “Clorin” brand product sold in bottles sufficient for a month of water treatment at a price of $0.09. We analyzed production, marketing, distribution, and overhead costs of Clorin before and after sales reached nationwide scale, and analyzed Clorin sales revenue. The average cost per bottle of Clorin production, marketing and distribution at start-up in 1999 was $1.88 but decreased by 82% to $0.33 in 2003, when >1.7 million bottles were sold. The financial loss per bottle decreased from $1.72 in 1999 to $0.24 in 2003. Net program costs in 2003 were $428,984, or only $0.04 per person-month of protection. A sensitivity analysis showed that if the bottle price increased to $0.18, the project would be self-sustaining at maximum capacity. This analysis demonstrated that efficiencies in the SWS supply chain can be achieved through social marketing. Even with a subsidy, overall program costs per beneficiary are low.

scholarly journals Úsporné odstraňování dusíku procesem anammox z kalových a splaškových odpadních vod

Entecho ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 1-5
Author(s):  
Vojtěch Kouba ◽  
Jan Bartáček
Keyword(s):  
Nitrogen Removal ◽  
Low Temperatures ◽  
Municipal Wastewater ◽  
Pilot Scale ◽  
Main Stream ◽  
Excess Sludge ◽  
Partial Nitritation ◽  
Loading Rates ◽  
Reject Water ◽  
Nitrite Oxidizing Bacteria

Proces částečná nitritace-anammox odstraňuje amoniakální dusík z odpadních vod s polovičními náklady na aeraci, až o 80 % nižší produkcí přebytečného kalu a bez spotřeby organického substrátu. Jde o zavedený proces pro odstraňování dusíku z kalových vod z anaerobní fermentace, a podobně koncentrovaných a teplých odpadních vod. Na tyto vody se částečná nitritace-anammox aplikuje již déle než deset let, a to např. pod názvy ANAMMOX®, ANITA™ Mox, DEMON®, nebo TERRAMOX®. Optimalizované provozy těchto technologií dusík běžně odstraňují při zatížení 0,5–2,3 kg∙m–3∙d–1 (30–35 °C). Současnou výzvou pro výzkum je implementace částečné nitritace-anammox do hlavního proudu studené splaškové odpadní vody, přičemž konkrétními problémy jsou (i) potlačení nežádoucích nitratačních mikroorganismů (NOB) a (ii) adaptace mikroorganismů anammox na nízké teploty. Náš výzkum jsme začali s jednostupňovým procesem, a poté nitritaci a anammox rozdělili do dvou reaktorů. Prezentujeme strategii, která v laboratorním měřítku NOB účinně potlačila i při 12 °C a dále i v pilotním měřítku při 13–30 °C. Dále ukazujeme, že anammox je možné na nízké teploty adaptovat studenými šoky. Tyto výsledky umožní rozšířit úsporné odstraňování dusíku i do hlavního proudu splaškové odpadní vody na ČOV. English: Partial nitritation-anammox (PN/A) process removes nitrogen from wastewater with 50% reduction of aeration costs, 80% less excess sludge and no consumption of organic carbon. PN/A is an established process for the removal of nitrogen from reject water from anaerobic digestion and other similarly warm and concentrated streams. On such wastewater, PN/A has been applied in full scale for over 10 years under names such as ANAMMOX®, ANITA™ Mox, DEMON® or TERRAMOX®, whose optimized installations consistently achieve nitrogen removal loading rates of 0,5–2,3 kg∙m–3∙d–1. The current challenge for research is to implement PN/A into the main stream of cold municipal wastewater, the specific challenges being (i) suppression of undesirable nitrite oxidizing bacteria (NOB) and (ii) adaptation of anammox microorganisms to low temperatures. Our initial experiences with one-stage PN/A in the main stream led us to the separation of PN/A in two subsequent reactors. Subsequently, we developed a strategy for NOB suppression in partial nitritation even under 12 °C, which we then successfully tested in the pilot scale. Furthermore, we found that anammox can be adapted to low temperatures using cold shocks. In sum, these results will enable extending the savings for nitrogen removal into the main stream of wastewater at WWTP.

METHODS FOR DETERMINING ORGANIC MATTER AND COLOUR IN WATER

2010 ◽  
Vol 2 (5) ◽  
pp. 5-8
Author(s):  
Ramunė Albrektienė ◽  
Mindaugas Rimeika
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Organic Compounds ◽  
Wave Length ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Filtration ◽  
Humic Matter ◽  
Sand Filters ◽  
Start Up

The article examines different methods for determining organic matter and colour in water. Most of organic compounds in water have a humic substance. These substances frequently form complexes with iron. Humic matter gives water a yellow-brownish colour. Water filtration through conventional sand filters does not remove colour and organic compounds, and therefore complicated water treatment methods shall be applied. The methods utilized for organic matter determination in water included research on total organic carbon, permanganate index and the bichromate number of UV absorption of 254 nm wave length. The obtained results showed the greatest dependence between water colour and permanganate index. However, UV adsorption could be used for organic matter determination during the operation of a water treatment plant and the start-up of plants as easy and fast methods.

Treatment of Landfill Leachate by Anammox Process

2020 ◽  
pp. 1169-1191
Author(s):  
Grzegorz Cema ◽  
Adam Sochacki
Keyword(s):  
Nitrogen Removal ◽  
Landfill Leachate ◽  
Inorganic Compounds ◽  
Complex Mixture ◽  
Short Review ◽  
Special Focus ◽  
Ammonia Content ◽  
Partial Nitritation ◽  
Reject Water ◽  
Anammox Process

In most cases, the anammox process is used for nitrogen removal from reject water coming from dewatering of digested sludge. However, there are more industrial streams suitable for treatment by partial nitritation/anammox process. The landfill leachate may be a good example of such wastewater. Generally, landfilling is the most used solution for treatment of urban solid wastes. The problem with landfill leachate production and management is one of the most important issues associated with the sanitary landfills. These streams are highly contaminated wastewater with a complex mixture of organic and inorganic compounds and characterized by a high ammonia content and low biodegradable organic fraction matter. The objective of this chapter is the short characteristic of landfill leachate and a short review of its treatment methods with special focus on nitrogen removal by partial nitritation/anammox process.

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