scholarly journals Sewage Treatment System Planning for Dianchi Urban Wetland Park in Kunming

2021 ◽  
Vol 245 ◽  
pp. 02019
Author(s):  
Yan-Sheng Wu ◽  
Yan Li ◽  
Xiong Gao ◽  
Jie Pan ◽  
Ning Wang ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Water System ◽  
Treatment System ◽  
Design Parameters ◽  
Dianchi Lake ◽  
Lake Basin ◽  
Ecological Protection ◽  
Wetland Treatment ◽  
Urban Wetland ◽  
Plateau Lake

Dianchi Lake urban wetland park in Kunming is an important component of Dianchi lakeside wetlands, it is of great significance to the urban development and ecological protection of Kunming. To solve the problem of non-point source pollution of Dianchi Lake basin, the Dianchi Lake Pan-Asian International Urban Wetland Park is taken as an example, the rapid artificial infiltration treatment system and the comprehensive constructed wetland treatment system were designed for Dianchi Lake urban wetland park, and various design parameters and its influencing factors have been analyzed. After the deep treatment by the treatment system, the water quality reached the standards of landscape water. The planning of water system for Dianchi Lake urban wetland park provides a reference for designing plateau lake urban wetland parks.

Innovative Water Treatment Design for Turning Wastewater Treatment Effluent Into Boiler Makeup Water

2003 ◽  
Author(s):  
Donald J. Castro ◽  
R. Peter Stasis
Keyword(s):  
Reverse Osmosis ◽  
Potable Water ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Water System ◽  
Treatment System ◽  
Makeup Water ◽  
Pinellas County ◽  
Pre Treatment

The Pinellas County Resource Recovery Facility (PCRRF) is a 3,150 tons per day mass burn facility located in Pinellas Park, Florida. Due to local water use restrictions and increasing costs for potable water supplies in central Florida, Pinellas County has continuously sought to reduce potable water usage at its facilities. The PCRRF’s boiler makeup water system represented a prime target. Accordingly, a makeup water pre-treatment system using reclaimed water from a sewage treatment plant as its source, has been installed upstream of the existing reverse osmosis membrane and mixed bed polishing demineralizers. The pre-treatment system consists of a micro-filtration module, followed by a reverse osmosis module, which results in an overall configuration of micro-filtration, two stage reverse osmosis, and polishing demineralization. The system has been operational for approximately six months, and is producing excellent quality makeup water for the facility boilers. This paper will describe the pre-treatment process and its operational results to date.

Rural Water Environment and Domestic Wastewater Treatment Control Technique Analysis of Dianchi Lake Basin

2013 ◽  
Vol 864-867 ◽  
pp. 1634-1638
Author(s):  
Bing Feng Xu ◽  
Yue Xue ◽  
Yan Feng ◽  
Guo Juan Wu
Keyword(s):  
Sewage Treatment ◽  
Water Environment ◽  
Domestic Wastewater ◽  
Control Technique ◽  
Dianchi Lake ◽  
Lake Basin ◽  
Treatment Techniques ◽  
Rural Water ◽  
Environment Control ◽  
Four Levels

The eutrophication problem of Dianchi Lake has been more and more serious. Based on the current situation of rural water environment,this paper carried out a survey of Dianchi Lake Basin rural water environment, in order to explore the proper technique for the local sewage pollution control. According to the water environment management requirements, this paper suggested the rural sewage treatment techniques and the treatment degree should be divided into four levels, provided a basis for Dianchi Lake Basin rural water environment control.

Treatment of Rural Domestic Sewage by Solar Ozonic Ecological Sewage Treatment Plant

2014 ◽  
Vol 955-959 ◽  
pp. 3393-3399 ◽  
Author(s):  
Wei Zheng ◽  
Yan Ming Yang ◽  
Yun Long Li ◽  
Jian Qiu Zheng
Keyword(s):  
Municipal Wastewater ◽  
Operating Cost ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Design Parameters ◽  
Small Scale ◽  
Municipal Wastewater Treatment ◽  
Average Percentage

The process technique and design parameters of project of Solar Ozonic Ecological Sewage Treatment Plant (short for SOESTP) which consists of anaerobic reactor, horizontal subsurface flow (HSSF) constructed wetlands(CWs) and the combination of solar power and ozone disinfection are described, the paper further examines the removal efficiency for treating rural domestic sewage, running expense and recycling ability of product water. The results show that the average percentage removal values of CODcr，BOD5，SS，TN，NH3-N，TP range from 95.6% to 98.0%, 96.0% to 98.7%, 93.1% to 96.1%, 97.0% to 98.9%, 96.9% to 99.5%, 98.2% to 99.6%, respectively, the reduction of fecal coliform (FC) reaches 99.9%, the effluent quality meets the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB18918-2002）. The running cost of SOESTP is 0.063yuan/ m3, saves much more than traditional sewage treatment, and the ozone water obtained from the reservoir will be an ideal choice for disinfection .The system has characteristics of easy manipulation, low operating cost, achieving advanced water, energy conservation and environment protection, is thought to be very suitable for use as the promotion of rural small - scale sewage treatment.

A New Sewage Treatment System with Fluidized Pellet Bed Separator

1993 ◽  
Vol 27 (11) ◽  
pp. 185-192 ◽  
Author(s):  
Tatsuhiko Suzuki ◽  
Norihito Tambo ◽  
Genzo Ozawa
Keyword(s):  
Molecular Weight ◽  
Biological Treatment ◽  
Membrane Filter ◽  
Sewage Treatment ◽  
Treatment System ◽  
Organic Substances ◽  
Treatment Rate ◽  
Treated Water ◽  
Biological Filter ◽  
Sewage Treatment System

A new sewage treatment system which is composed of a fluidized pellet bed separator, aerobic biological filter and micro–membrane filter was studied. In the newly proposed system, at the first stage, higher molecular weight organic substances and suspended matter are removed by way of chemical coagulation and flocculation. For the operation, a new fluidized pellet bed separator with high separation rate of 200-300 m/day is introduced to improve the treatment rate. A large percentage of organ ic substances are removed by the new coagulation/flocculation process. Hence, the total BOD load to be applied to the following biological treatment becomes very low. In addition to this, the organic substances in the effluent from the fluidized pellet bed separator are on lylower molecular weight substances which are easily biologically decomposed. Therefore easily decomposing and lower concentration pollutants enable use of a simple biological treatment p rocess such as aerobic biological filter with as short a detention time as 1 hour. Finally, effluent from the biological filter is treated by a micro-membrane filter. By the membrane process, suspended matte rs in the biologically treated water can be removed completely. Phosphate concentration of the treated water is very low, which is caused by aluminum coagulation in the first step and biological intake of the nutrient in the second step followed by complete sol id liquid separation in the third step.

scholarly journals Is It Possible to Restore a Heavily Polluted, Shallow, Urban Lake?

2020 ◽  
Vol 10 (11) ◽  
pp. 3698
Author(s):  
Jolanta Grochowska ◽  
Renata Augustyniak ◽  
Michał Łopata ◽  
Renata Tandyrak
Keyword(s):  
Bottom Sediment ◽  
Sediment Resuspension ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Water Reservoir ◽  
Dry Weight ◽  
Municipal Sewage ◽  
Lake Basin ◽  
Phosphorus Inactivation

The research was carried out on Karczemne Lake, a water reservoir located in Kartuzy (northern Poland, Pomeranian Lake District). Monitoring of the water and bottom sediment of Karczemne Lake showed a very high level of contamination of the reservoir by a long-term inflow of untreated municipal sewage. The trophic status index of total phosphorus (TP) was unusually high at 101, and the TP content in the bottom sediments—31 mg g−1 (dry weight)—was the highest value recorded worldwide in a lake. Based on the monitoring results, to achieve constant improvement of the water quality, we recommend a completely new, safe and economically justified method of bottom sediment removal and management. A very important aspect of this method is the prevention of uncontrolled sewage discharge back into the lake basin. Removed sediment with interstitial water will be pumped through a pipeline and transported to a sewage treatment plant. In the sediment mining field in which the sludge will be removed, the first phase of phosphorus inactivation will be carried out to chemically precipitate pollutants distributed in the water column as a result of sediment resuspension. After the deepening of the entire lake basin, the method of phosphorus inactivation will be carried out on the entire surface of the lake as the next stage of restoration. A supporting activity will be biomanipulation. Before the restoration is started, the municipal sewerage system will be modernized.

scholarly journals An Interdisciplinary Approach to the Sustainability of a Gravity-Fed Water System in the Peruvian Andes

2019 ◽  
Vol 14 (3) ◽  
pp. 49-60
Author(s):  
Riley Orabona Wagner ◽  
Sydney Hsu ◽  
John Nicholas Kick ◽  
Sofia Bisogno ◽  
Camille Heubner ◽  
...  
Keyword(s):  
Water System ◽  
Interdisciplinary Approach ◽  
Design Parameters ◽  
Small Scale ◽  
Development Projects ◽  
Peruvian Andes ◽  
Princeton University ◽  
Future Success ◽  
Local Partnerships ◽  
Engineers Without Borders

This paper analyzes the methods utilized by the Princeton University Chapter of Engineers Without Borders to ensure the sustainability of a gravity-fed water system in rural northwestern Peru. While similar small scale development projects consider sustainability in their design process, some do not recognize the importance of an interdisciplinary approach to sustainability. This team, however, is inherently interdisciplinary in nature due to its unique subteam structure, which subsequently affects its approach to sustainability. By examining the technical, social, and financial considerations of the project conducted by the Princeton University Chapter of Engineers Without Borders, this paper argues for a three-pronged approach to sustainability. As can be seen through thoughtful design parameters, strong local partnerships, and strategic financial mechanisms, the project displays promise of future success with regards to sustainability. The main objective of the Princeton Chapter of Engineers Without Borders in this partnership is to ensure that the community has the knowledge, tools, and resources necessary to maintain the water system in a self-sufficient manner at the completion of the chapter’s involvement.

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