The Optimized Model of Town Sewage Structure Charge and its Computing

2013 ◽  
Vol 726-731 ◽  
pp. 1190-1193
Author(s):  
Zhang E Peng ◽  
Jian Ping Luo ◽  
Xia Zhang
Keyword(s):  
Minimum Spanning Tree ◽  
Sewage Treatment ◽  
Local Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Pipe Network ◽  
Long Distance ◽  
Sewage Pipe ◽  
Planning And Design ◽  
Shortest Distance

In reference to international regional sewage pipe network and sewage treatment plant planning, the actual situation of China's villages and small town was investigated. According to the costs data from presented sewage pipe and sewage treatment plant construction system, the model on the sewage pipe network and sewage treatment plant charge was obtained. Then the model was simplified to be calculating the shortest distance between the wastewater treatment plant and the effluent discharge point. The suitable computing method for the shortest distance is building the minimum spanning tree. The software for computing was written with prim algorithm. The computing results can be used as a planning and design reference of sewage pipe network. The model method can be used for design program to select long-distance transmission or local treatment of the sewage.

Frequency Constant Pressure Control System Based on PLC

2013 ◽  
Vol 579-580 ◽  
pp. 798-803
Author(s):  
Qi Zhu ◽  
Zhi Wen Feng
Keyword(s):  
Wastewater Treatment ◽  
Control System ◽  
Constant Pressure ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Pressure Control ◽  
Pipe Network ◽  
Pumping Station ◽  
Pressure Control System

Sewage pumping station is pumping station import at the sewage treatment plant. Its role is to collect the wastewater from the sewage pipe network to subsequent wastewater treatment process facilities. The water level is usually low in sewage collection pipe network. And many wastewater treatment facilities is based on elevation settings. So it is necessary to use lift pump to improve lift of the collected sewage, using high gravity sewage errands subsequent process in order to reduce energy consumption. The traditional way of pumping generally has the shortcomings: the waste of power resources, low efficiency, poor reliability, low degree of automation, which seriously affects the urban sewage treatment capacity. This paper, views pump station control system at the sewage treatment plant as the background, researches frequency control constant pressure control system based on PLC, realizes the energy efficient, automated and reliable direction of development of the sewage pumping station.

Reducing nutrient enrichment of waterways through public education: a tale of two cities

2000 ◽  
Vol 27 (4) ◽  
pp. 351-358 ◽  
Author(s):  
Jonathon Howard ◽  
Daryl McGregor
Keyword(s):  
Public Education ◽  
Nutrient Enrichment ◽  
Sewage Treatment ◽  
Local Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Community Support ◽  
Cost Effective ◽  
Murray Darling Basin ◽  
Phosphorus Loads

Eutrophication of waterways, expressed as excess growth of cyanobacteria, is frequently caused by excessive inputs of phosphorus. Human activities are often the origin of such nutrient enrichment and so many governments have addressed the issue by implementing a range of technological, legislative and biological measures. By contrast, Australia has taken a different approach and also relied heavily on public education. This paper compares the success of two of these ‘Phoswatch’ public education programmes. One campaign occurred within the Murray-Darling Basin in a country town called Albury-Wodonga. The other occurred within the Hawkesbury-Nepean Basin in the western suburbs of Sydney. The campaigns were evaluated using a series of community surveys and by monitoring phosphorus loads at a sewage treatment plant. The Albury-Wodonga campaign was the most effective of the two campaigns with increases in the number of people reporting a range of behaviours and these resulted in a decrease in phosphorus loads entering the local treatment plant. The comparison suggests that clear simple messages, a diversity of media exposure, and some form of feedback are critical to programme success. It is concluded that campaigns such as Phoswatch can provide a long term, cost effective way of addressing eutrophication by focusing on the problem at source and creating community support for an integrated strategy.

scholarly journals Local treatment of leachate from MSW landfills using soil plant - system

2019 ◽  
pp. 321-334
Author(s):  
Lars Thörneby ◽  
William Hogland ◽  
Erling Alm ◽  
Anders Lind´en ◽  
Hans Dahl ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Conventional Treatment ◽  
Environmental Concern ◽  
Sewage Treatment ◽  
Local Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Removal Efficiencies ◽  
Municipal Sewage Treatment Plant

Landfill leachate is identified as an environmental concern, as it contains both eutrophicating and hannful substances. Collection and treatment of leachate is therefore a necessity and most landfills in Sweden treat the leachate before discharge into any recipient. More and more landfills changes to local treatment and at Moskogen and Hedeskoga landfills Soil-Plant (SP) systems were designed to replace the conventional treatment of leachate at the municipal sewage treatment plant. Installed in 1998, the SP-system at Moskogen have removal efficiency today for some key parameters of about: 97% for BOD; 41 % for COD; and for NH4-N 99%. The SP-system at Hedeskoga was planted with cuttings (Salix) in the spring of 1999 and the system was put into operation in the summer and the removal efficiencies for pollutants in the ponds was in July for: BOD 80%; COD 65%; Tot-N 87%; and NH4-N 94%.

scholarly journals Characterization and prediction of odours from municipal sewage treatment plant

2018 ◽  
Vol 2017 (3) ◽  
pp. 762-769 ◽  
Author(s):  
Weifang Li ◽  
Weihua Yang ◽  
Jiayin Li
Keyword(s):  
Hydrogen Sulfide ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Methyl Mercaptan ◽  
Long Distance ◽  
Odour Activity Value ◽  
Odour Concentration ◽  
Municipal Sewage Treatment Plant

Abstract One of the causes of public discomfort and complaint about odour in China is the nuisance odour, generated from the municipal sewage treatment plants. With the ability to be dispersed over a long distance, the odours can affect a large number of people. With the aim of identifying the compounds contributing the most to the overall odour emanating from municipal sewage treatment plant, and developing a prediction model for sensory odour concentration based on the compound odour activity value (OAV), odour samples from 2 days were collected at a municipal sewage treatment plant in Tianjin in the months of October and November 2013. Odour concentrations (OCs) were measured by the triangular odour bag method. Chemical components were quantified by gas chromatography–mass spectrometry. According to the analysis of odour emission characteristics, it was found that hydrogen sulfide and methyl mercaptan were the key odorants responsible for the overall odour. To understand the interrelationship of these two odorants, 10 groups of a binary mixture of hydrogen sulfide and methyl mercaptan, representing different levels of odour concentration and intensity, were prepared in the laboratory. OCs were regressed against OAV using multivariate linear regression. A statistically significant positive correlation was found between single-compound OAV and odour concentration (by both SPSS and Minitab software). Furthermore, the models were validated by field monitoring data, which showed the odour prediction concentration had a good fit to the measured concentration by using Minitab software. Lastly, the Austal 2000 model system was used for the simulation of the odour emission dispersion into the surrounding area. This study provides an effective way to predict the odour emission condition in municipal sewage treatment plant.

Monitoring and Analysis of Historic Building Vibration Influenced by Blasting in Complex Urban Environment

2013 ◽  
Vol 423-426 ◽  
pp. 1558-1562 ◽  
Author(s):  
Jun Ma ◽  
Long Fa Luan ◽  
Xin Han Li ◽  
Jian Guo Wang ◽  
Qi Hang Li
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Vertical Direction ◽  
Municipal Sewage ◽  
Pipe Network ◽  
Vibration Signals ◽  
Historic Building ◽  
Network Project ◽  
Attenuation Laws

This article is based on TengChong County municipal sewage treatment plant supporting pipe network project, monitored and analyze the vibration influence on the historic building taiji bridage by the Pipe-jacking blasting construction. Via regression analysis of velocity in vertical direction of measuring points on the basis of monitoring data, obtained the attenuation laws toward taij bridage direction. The vibration signals were decomposed into IMF components by using HilbertHuang transform (HHT),analyzed the several IMF components could be acquired the timefrequency characteristics of the vibration signals. These will provide references to the similar projects.

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.

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.

Properties of Nocardiaform Actinomycetes Isolated from a Sewage Treatment Plant of Southern Part of Miyagi.

2000 ◽  
Vol 36 (4) ◽  
pp. 161-171
Author(s):  
KENITSU KONNO ◽  
NAOKI ABE ◽  
YOSHIRO SATO ◽  
KOJI AKAMATSU ◽  
MAKOTO ABE ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant
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