The Status and Development of Water Treatment Technology for Supercritical Unit

2014 ◽  
Vol 940 ◽  
pp. 52-58
Author(s):  
Guo Hua Lu ◽  
Qiao Ling Peng ◽  
Yang Mei ◽  
Zheng Feng Li ◽  
Shun An Cao
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Power Plants ◽  
Present Situation ◽  
Field Investigation ◽  
Feed Water ◽  
Treatment Technology ◽  
The Status ◽  
Treatment Technologies ◽  
Development Prospects

The paper is to study the water treatment technologies for supercritical unit to improve its steam-water quality and ensure safe and economical operation. Based on lots of domestic and foreign literature and field investigation in some typical power plants, the paper summaries present situation and development prospects of the technology and system process of water treatment for supercritical unit, and also compared the technologies, including make-up water, condensate water and feed-water treatment, from theoretical and technical prospective.

Discussion on Feed-Water Treatment Technology of Supercritical Unit

2015 ◽  
Vol 1092-1093 ◽  
pp. 831-837
Author(s):  
Guo Hua Lu ◽  
Qiao Ling Peng ◽  
Shun An Cao
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Ph Value ◽  
Operating Efficiency ◽  
Feed Water ◽  
Low Oxygen ◽  
Treatment Technology ◽  
Water Steam ◽  
Water Treatment Technology ◽  
Steam System

The oxygenated feed-water treatment technology of supercritical unit can effectively decrease the corrosion of water-steam system, and thus steam-water quality and operating efficiency are greatly promoted. In view of modes of feed-water treatment technology for supercritical unit, the characteristics of oxide film in thermal system under AVT and OT conditions are compared; and then, the principle of oxygenated feed-water treatment technology was elaborated. Besides, the oxygenated conditions, controlling of water quality, advantages, the relation between formation of oxide scale and oxygen plus are analyzed. Finally, the paper introduced weak oxiding feed-water treatment technology, with the principle of low oxygen and high pH value.

KONDISI KUALITAS AIR SUMUR PENDUDUK DI WILAYAH GENANGAN SEMBURAN LUMPUR SIDOARJO

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Satmoko Yudo
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Environmental Damage ◽  
Well Water ◽  
Treatment Technology ◽  
Treatment Technologies ◽  
Alternative Water ◽  
The Impact ◽  
Mud Flow

Sidoardjo mudflow has been occuring since 2006. This disaster is the first incident in Indonesia which has such a broad impact, like the settlements, fields, roads and other buildings submerged, resulting in enormous losses. Besides damaging the existing infrastructure in the area, the mud flow is also causing environmental damage, particularly contamination of ground water community. To find out how much the impact of the mud flow to the water quality community, carried out observations and surveys of well water quality conditions of the communities around the location of the mud puddles. In this paper provided an alternative drinking water treatment technology can be applied in this area. Keywords: Lapindo mud, environmental degradation, pollution of well water quality, alternative water treatment technologies

Feed-Water Treatment Technology of Supercritical Unit

2014 ◽  
Vol 1081 ◽  
pp. 103-109
Author(s):  
Guo Hua Lu ◽  
Qiao Ling Peng ◽  
Shun An Cao
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Ph Value ◽  
Operating Efficiency ◽  
Feed Water ◽  
Low Oxygen ◽  
Treatment Technology ◽  
Water Steam ◽  
Water Treatment Technology ◽  
Steam System

The oxygenated feed-water treatment technology of supercritical unit can effectively decrease the corrosion of water-steam system, and thus the steam-water quality and the operating efficiency are greatly promoted. In view of the mode of feed-water treatment for supercritical unit, the characteristics of oxide film in thermal system under AVT and OT conditions are compared; and then, the principle of oxygenated feed-water treatment technology was elaborated. Besides, the oxygenated conditions, controlling of water quality, advantages, the relation between the formation of oxide scale and oxygen plus are analyzed and discussed. Finally, the paper introduced weak oxiding feed-water treatment technology for supercritical unit, with the principle of low oxygen and high pH value.

scholarly journals Treatment Method Assessment of the Impact on the Corrosivity and Aggressiveness for the Boiler Feed Water

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1965 ◽  
Author(s):  
Skoczko ◽  
Szatyłowicz
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Saturation Index ◽  
Treatment Plant ◽  
High Water ◽  
Feed Water ◽  
Exchange Cation ◽  
Boiler Water ◽  
The Impact ◽  
Boiler Feed Water

The aim of the study was the assessment of corrosivity and aggressiveness for boiler feed water. The negative effects of water corrosivity and aggressiveness may include silting up of the steel water supply system and the destruction of boiler equipment touched or washed by such water. They may cause the whole industrial production system to fail or be destroyed. That is why it was important to reach a high water purification level, including the calculation of water aggressiveness and corrosivity indicators. The carried out test showed that the simple system used before the modernization of the industrial water treatment plant is not sufficient to reach clean and stable water. The authors proposed modernization, including additional processes to improve boiler water quality, and designed new devices for water treatment. As a result of the new idea, groundwater taken as raw water was treated in individual and complex processes, such as pre-aeration, filtration, ion exchange (cation and anion exchange resigns), extra aeration, and extra degassing. The conducted research included chemical analyses of raw and treated water. In the conducted studies, the indirect method of water aggressiveness and corrosivity assessment was applied using mathematical calculation of the Langelier Saturation Index (LSI), the Ryznar Stability Index (RI), the Larson–Skold Index (LI), and the Singley Index (SI). The results proved that the new proposed processes for the boiler feed water treatment station allow reaching a high water quality and low level of water aggressiveness and corrosion.

Development of a predictive model to determine the temporal variability in mine feed water quality towards informing and forecasting plant operating strategy – a South African coal mine water treatment plant case study

2016 ◽  
Vol 11 (3) ◽  
pp. 621-633
Author(s):  
J. Nathoo ◽  
E. Hong Gay ◽  
N. Hussain
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Coal Mine ◽  
Mine Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Feed Water ◽  
Unsteady State ◽  
Mine Water Treatment ◽  
Brine Treatment

The feed water quality associated with mine water treatment is typically characterised by a dynamic variability resulting from the fact that the final feed water to the water treatment plant (WTP) can be an amalgamation of water streams emanating from a number of sources. Consequently, the ability to deal with the dynamic nature of the feed water quality towards successful and sustainable mine water treatment goes beyond a proactive approach and requires a systemic, predictive approach. This paper discusses the development of an unsteady state mass balance model on a surface dam located on a coal mine towards predicting the dynamic fluctuations in total dam volume and its total dissolved solids (TDS) concentration in the feed water to a NuWater 20 MLD mobile WTP, comprising chemical conditioning, ultrafiltration and reverse osmosis (RO). The unsteady state mass balance, incorporated water entering the dam via the opencast pits, underground compartments, seasonal rainfall and the RO brine return. Water leaving the dam comprised the feed water to the WTP, partial brine treatment, surface evaporation and seepage. Validation of the model using actual data over an 8-month period showed excellent results. The model showed that without water treatment, the dam would overflow in 218 days. Although the dam's volume could be sustained at the ideal volume by treating 14.2 MLD, its TDS would exceed the maximum environmental limit in 197 days. Consequently, the combination of a 13.2 MLD WTP with a 1 MLD brine treatment plant provided the optimal water treatment strategy to sustainably maintain the dam's TDS concentration and volume within acceptable limits over the 5-year investigation period. This paper demonstrates the importance of using a predictive methodology for forecasting feed water characteristics and as an early warning system for most water treatment systems that are subjected to dynamic conditions.

Pipe material and water quality in a holistic view

2001 ◽  
Vol 1 (3) ◽  
pp. 1-10
Author(s):  
T. Hedberg
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Distribution Networks ◽  
Pipe Material ◽  
Treatment Technology ◽  
Water And Wastewater Treatment ◽  
Holistic View ◽  
General Terms ◽  
Research Activities

The new trends in societies towards sustainable development have necessitated a new way of thinking regarding water treatment, the distribution of drinking water and wastewater treatment. A process of implementing new European water directives is ongoing and the consequences and need for coordination of these changes are discussed. Raw water qualities, water treatment technology and drinking water quality have impacts on water quality deterioration in the distribution networks that negatively affect the possibilities for recycling sewage sludge containing valuable nutrients. Measures for coping with these issues are discussed in general terms and suggestions for future strategies and research activities are given.

TECHNOLOGIES OF WATER TREATMENT ON THE EXAMPLE OF THE LLC «KRASNODARVODOKANAL»: ANALYSIS AND RECOMMENDATIONS

2020 ◽  
Author(s):  
Н.К. Стрижов ◽  
А.В. Дубакова ◽  
А.А. Лазарев
Keyword(s):  
Water Treatment ◽  
Sodium Hypochlorite ◽  
Radiation Safety ◽  
Raw Material ◽  
Treatment Technology ◽  
Multi Stage ◽  
State Of Water ◽  
Treatment Technologies ◽  
Water Tanks ◽  
Industry Sectors

Дан анализ состояния водоснабжения населения и отраслей пищевой промышленности чистой водой и рекомендации по совершенствованию существующих технологий водоподготовки в Краснодаре. Рассмотрены технологии многоступенчатой очистки воды в хозяйственных, бытовых и производственных целях: водоподготовка, восстановление электродных пакетов к установкам получения гипохлорита натрия, очистка резервуаров питьевой воды. Проведены исследования воды на водозаборе Ново-Западный по показателям качества: микробиологическим, органолептическим и обобщенным, по содержанию неорганических и органических веществ, а также радиационной безопасности. Предложены рекомендации по технологии водоподготовки и восстановлению электродных пакетов к установкам получения гипохлорита натрия. Установлено, что качество воды является основным условием для определения количества реагента-очистителя: коагулянта, перманганата калия, озона, гипохлорита натрия. The analysis of the state of water supply to the population and food industry sectors with clean water and recommendations for improvement of existing water treatment technologies in Krasnodar are given. The issues of multi-stage water treatment for domestic and industrial purposes, where water acts as a raw material: the technology of water treatment at intakes, the restoration of electrode bags in installations for the production of sodium hypochlorite and the cleaning of drinking water tanks are considered. Studies of water in the Novo-Zapadny water intake were carried out according to quality indicators: microbiological, organoleptic and generalized, according to the content of inorganic and organic substances, as well as radiation safety. Recommendations on water treatment technology and restoration of electrode packages for installations for the production of sodium hypochlorite, are offered. It is determined that water quality is the main condition for determining the amount of the reagent-purifier: coagulant, potassium permanganate, ozone, sodium hypochlorite.

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