Operation Optimization Analysis of Circulating Water Treatment in Thermal Power Plants

2013 ◽  
Vol 726-731 ◽  
pp. 1895-1900
Author(s):  
Lian Qing Yin ◽  
Zhi Wei Ai ◽  
Cui Jiao
Keyword(s):  
Water Treatment ◽  
Power Plants ◽  
Thermal Power ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Poor Quality ◽  
Circulating Water ◽  
Large Water

According to reclaimed water in the sewage treatment plant is poor , quality of circulating water is difficult to control, which caused the water tower water quantity and large water treatment medicament consumption and so on,we made an analysis.

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

Assessment of Environmental Quality of Soil Fertilized Grapefruit Trees with Municipal Sewage Sludge

2013 ◽  
Vol 671-674 ◽  
pp. 2736-2741
Author(s):  
Yin An Ming ◽  
Tao Tao
Keyword(s):  
Sewage Sludge ◽  
Environmental Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Land Application ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Limiting Factor

To reuse municipal sewage sludge safely, experiment was carried out on grapefruit trees fertilized with composted sludge from Shiweitou Sewage Treatment Plant in Xiamen City of China, and a method was introduced of how to assess the environmental quality of grapefruit trees soil fertilized with sludge by Set Pair Analysis (SPA) model. The results showed that the soil in the surface layer (0-15cm) and the deeper layer (15-30cm) was less clean, and the environment of soil was not polluted. Thus it was feasible to use sludge as fruit fertilizer. The maximum service life of sludge for continuous land application was estimated by taking Cd as the limiting factor, which would provide scientific guide and technical support for safe land application of sludge.

scholarly journals Industrial experiment on electrodialized separation of highly concentrated multicomponent technological solutions at thermal power plants

2019 ◽  
Vol 124 ◽  
pp. 01029
Author(s):  
A. A. Filimonova ◽  
N. D. Chichirova ◽  
A. A. Chichirov ◽  
A. I. Minibaev
Keyword(s):  
Water Treatment ◽  
Anion Exchange ◽  
Power Plants ◽  
Thermal Power ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Wash Water ◽  
Production Cycle ◽  
Thermal Power Plants ◽  
Alkaline Waste

The main sources of highly concentrated multicomponent technological solutions at thermal power plants (TPPs) are water treatment plants. Analysis of operation of the ion-exchange water treatment plant at the Nizhnekamsk Thermal Power Plant-1 showed that half of alkali supplied to regeneration of the anion-exchange alkali filters is not used, but is discharged for neutralization and then to wastewater. Due to the fact that the cost of alkali used in technological processes is quite high, it is economically feasible to process the alkaline waste with the alkali extraction and its reuse in the production cycle. The article presents the experimental results on the electro-membrane separation of alkaline waste regeneration solutions and wash water after anion-exchange filter regeneration. The revealed differences in the selectivity of various ion transfer through the electrodialysis apparatus membranes, depending on time and amount of transmitted electricity, allowed us to establish the possibility of obtaining an alkaline solution purified from impurities.

scholarly journals MBBR+two-stage AO in upgrading and rebuilding project Of a sewage treatment plant in north China

2019 ◽  
Vol 136 ◽  
pp. 06031
Author(s):  
Shen Dongmei ◽  
Yu Cairui ◽  
Gao Yulan ◽  
Song Xinwei ◽  
Chu Jingsong
Keyword(s):  
High Efficiency ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Oxidation Ditch ◽  
Effluent Quality ◽  
Second Stage ◽  
The North ◽  
Filter Process

A sewage treatment plant is located in the middle of Inner Mongolia. There is a large amount of slaughtering wastewater in the influent with high COD, SS, low annual temperature, poor nitrogen removal effect, and the effluent quality is only grade B. In order to solve the above problems, A\A\O-MBBR + high efficiency sedimentation tank continuous sand filter process was adopted to establish a new anaerobic tank and a first stage AO-MBBR bioreactor. The selection tank and partial oxidation ditch were transformed into the second stage A pool (anoxic pool), and the remaining part of the existing oxidation ditch was transformed into the second stage O pond (aerobic pool), which further removed phosphorus and reduced the SS in the sewage, and solved the problem of low temperature biological treatment in winter in the north of China. The quality of the effluent reached level A after the upgrading.

scholarly journals Differences in the ASM model caused by data structure

2018 ◽  
Vol 45 ◽  
pp. 00036
Author(s):  
Zbigniew Kowalewski
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Municipal Sewage ◽  
Insufficient Amount ◽  
The Usa ◽  
Plant Monitoring ◽  
Model Family

The process of designing and exploiting municipal sewage treatment plants has become much simpler and more efficient thanks to mathematical modeling. The ASM model family is able to simulate the operation of existing or designed objects in a satisfactory manner. The basic problem in Poland is the insufficient amount of data for simulations coming from plant monitoring. It is provided to create unstable model results with difficulties in calibration and validation. The aim of this article is to confirm how the amount of data and its completeness will affect the quality of the simulation performed in the ASM model. The study object is a sewage treatment plant located in Chicago in the USA. It is a sewage treatment plant operating with activated sludge technology, with regular monitoring of the quality of raw and treated wastewater. For modeling, a variant of the ASM model built into the BioWin 5.2 software was used.

scholarly journals Causes of polytrophism of three lakes in the Wdzydze Landscape Park

2011 ◽  
Vol 11 (3) ◽  
pp. 97-103
Author(s):  
Jerzy Jańczak ◽  
Wojciech Maślanka ◽  
Kamil Nowiński
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Compounds ◽  
Lake Water Quality ◽  
Nitrogen And Phosphorus ◽  
Quality Of Water ◽  
Quality Of Waters ◽  
Lake Inflows

Causes of polytrophism of three lakes in the Wdzydze Landscape ParkIn the lakes Cheb and Słupino, located in the Wdzydze Landscape Park the quality of waters has been deteriorating in recent years. In the hydrologic year 2009 the quality of water was examined three times. Monthly measurements on the lake inflows and outflows were carried out 12 times to determine biogenic loads. In 2010 the supplementary measurements of biogenic loads were taken in the streams five times. According to Vollenweider's criterion, the loads of nitrogen and phosphorus compounds are too big, the heaviest to Lake Cheb. The discharge from the new sewage treatment plant is directed by the inflows into this lake. A similar situation takes place in the inflow to Lake Schodno. Paradoxically, in some catchments the construction of the sewage treatment plant may result in the deterioration of lake water quality.

scholarly journals Effects of precipitation on the amount and quality of raw sewage entering a sewage treatment plant in Wodzisław Śląski

2017 ◽  
Vol 34 (1) ◽  
pp. 85-93 ◽  
Author(s):  
Krzysztof Chmielowski ◽  
Piotr M. Bugajski ◽  
Grzegorz Kaczor
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Precipitation Intensity ◽  
Descriptive Statistics ◽  
Mean Values ◽  
Sewage Contamination ◽  
Basic Parameters ◽  
Research Period

Abstract The study presents the effects of precipitation on the amount and quality of raw sewage entering a sewage treatment plant in Wodzisław Śląski. It covers a six-year period between January 2010 and December 2015. The research period was divided into seven classes of precipitation intensity. The classes were characterized for their basic descriptive statistics of the raw sewage entering the investigated sewage treatment plant (STP). Data obtained from the collected material and derived from an analysis indicated a considerable influence of precipitation on the amount of sewage entering the investigated facility. Mean amount of sewage entering the STP was by 10.5% (884.9 m3·d-1) greater in B class and by 69.6% (6,153.9 m3·d-1) greater in G class than during dry weather. Individual classes of precipitation intensity were compared for their mean values of raw sewage contamination. Precipitation intensity was found to significantly affect concentrations of the investigated parameters of raw sewage contamination. Basic parameters of sewage contamination (BOD5, CODCr, total suspended solids) were determined and their basic descriptive statistics, such as median, mean, minimum and maximum value, standard deviation and coefficient of variation were calculated.

The Transformation of Heavy Metal Be in Activated Sludge Process

2012 ◽  
Vol 178-181 ◽  
pp. 633-636 ◽  
Author(s):  
Feng Chen ◽  
Xiu Lian Zhu ◽  
Wei Yu
Keyword(s):  
Heavy Metal ◽  
Activated Sludge ◽  
Sewage Treatment ◽  
Great Influence ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Urban Land Use ◽  
Huge Number ◽  
Sludge Treatment

Municipalsludge is refers to the product of sewage treatment plant, facing the huge number of municipalsludge, the disposal of the municipalsludge has aroused wide attention of all countries. Many studies consider that urban land use of the municipalsludge is the most effective method, However heavy metal accumulats in the sludge and the environment of the risk with agricultural appears day after day.The purpose of this study is: analysis the transfermation of heavy metals in the activated sludge system of various structures. put forward the solution of reducing heavy metal exceeded in the activated sludge treatment process.It appears that the coagulation can make colloid stabilized and sedimentation, can control the input of the heavy metal effectively; Adsorption of activated sludge to heavy metal is very fast, in 30 min basic reached adsorption balance, probably 80% or more;The change from oxygen to aerobic have great influence on Heavy metal biological adsorption;An aerobic digestion processes can reduce the volume and quality of sludge, but there is no enrichment role to heavy metal in sludge.

scholarly journals Examine Design Considerations for Sustainable Management of an Overloaded Sewage Treatment Plant in a Residential Campus

2019 ◽  
Vol 8 (4S2) ◽  
pp. 104-107
Keyword(s):  
Water Treatment ◽  
Sustainable Management ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Recycled Water ◽  
Cost Of Construction ◽  
Great Step ◽  
Centralized System

The era is now facing water scarcity and the available water is being depleted at a faster rate to meet the needs of the growing population. At this juncture, it is essential to use the reduce-reuse-recycle strategy. Reducing excessive usage of water for essential needs and reusing the recycled water for non-consumptive purposes can be a great step in the conservation of water. The waste water from various sources can be collected and treated using an STP. In most of the cases, water treatment requires a centralized system of control and operation. The STP should be designed by considering the inflow characteristics, objective of the water treatment and availability of resources. There are various operational and managerial constraints while designing an STP. In case of overloaded condition of available STP, either some modification has to be done to prevent the decrease in efficiency of the obtained output or a new plant has to be constructed. In this case study, we have analyzed three different approaches to solve the issue of an overloaded STP. The results based on various criteria including cost of construction and maintenance have been discussed.

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