scholarly journals An optimal design strategy of decentralized storage tank locations for multi-objective control of initial rainwater quality

2020 ◽  
Vol 20 (6) ◽  
pp. 2069-2081
Author(s):  
Huifeng Li ◽  
Lijun Lu ◽  
Xiangfeng Huang ◽  
Haidong Shangguan ◽  
Zhongqing Wei
Keyword(s):  
Water Quality ◽  
Storage Tank ◽  
Pollution Prevention ◽  
Urban Pollution ◽  
Design Strategy ◽  
Storage Tanks ◽  
Element Analysis ◽  
Index Method ◽  
And Control ◽  
Rainwater Quality

Abstract In recent years, frequent non-point source pollution has raised serious challenges for urban water environmental management. The efficiency and cost of water quality storage tanks, which can prevent and control urban pollution effectively, are significantly affected by their locations. However, few studies have determined the location of decentralized storage tanks with consideration of the characteristics of initial rainwater quality, which has led to unsatisfactory or extravagant design. Therefore, a new design strategy is proposed to optimize the locations of water quality storage tanks using the InfoWorks ICM model in this study. It includes two basic steps. Firstly, the pollution severity of each node in the corresponding subcatchment is evaluated and ranked through the matter element analysis method and analytic hierarchy process. Secondly, all the nodes are precisely sorted by their excessive multiples using the single factor index method. Its application in the design of the decentralized storage tank locations in Fuzhou, China, proved that the proposed strategy can reduce the total volume of decentralized storage tanks to 0.38 times that of a terminal tank. The strategy presented in this study may also be useful in other research on storage tank design in urban pollution prevention and control systems.

scholarly journals The effect of household storage tanks/vessels and user practices on the quality of water: a systematic review of literature

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Musa Manga ◽  
Timothy G. Ngobi ◽  
Lawrence Okeny ◽  
Pamela Acheng ◽  
Hidaya Namakula ◽  
...  
Keyword(s):  
Systematic Review ◽  
Water Quality ◽  
Storage Tank ◽  
Grey Literature ◽  
Water Storage ◽  
Storage Tanks ◽  
Water Storage Tank ◽  
Hygiene Practices ◽  
Quality Of Water ◽  
Vessel Material

Abstract Background Household water storage remains a necessity in many communities worldwide, especially in the developing countries. Water storage often using tanks/vessels is envisaged to be a source of water contamination, along with related user practices. Several studies have investigated this phenomenon, albeit in isolation. This study aimed at developing a systematic review, focusing on the impacts of water storage tank/vessel features and user practices on water quality. Methods Database searches for relevant peer-reviewed papers and grey literature were done. A systematic criterion was set for the selection of publications and after scrutinizing 1106 records, 24 were selected. These were further subjected to a quality appraisal, and data was extracted from them to complete the review. Results and discussion Microbiological and physicochemical parameters were the basis for measuring water quality in storage tanks or vessels. Water storage tank/vessel material and retention time had the highest effect on stored water quality along with age, colour, design, and location. Water storage tank/vessel cleaning and hygiene practices like tank/vessel covering were the user practices most investigated by researchers in the literature reviewed and they were seen to have an impact on stored water quality. Conclusions There is evidence in the literature that storage tanks/vessels, and user practices affect water quality. Little is known about the optimal tank/vessel cleaning frequency to ensure safe drinking water quality. More research is required to conclusively determine the best matrix of tank/vessel features and user practices to ensure good water quality.

Kajian Status Mutu Air dan Identifikasi Sumber Pencemaran Sungai Cidurian Segmen Hilir Menggunakan Metode Indeks Pencemaran (IP)

2021 ◽  
Vol 20 (1) ◽  
pp. 22-29
Author(s):  
Novianti Novianti ◽  
Badrus Zaman ◽  
Anik Sarminingsih
Keyword(s):  
Water Quality ◽  
Good Condition ◽  
Pollution Index ◽  
Quality Standard ◽  
Sampling Point ◽  
Index Method ◽  
Pollution Management ◽  
Water Quality Status ◽  
And Control ◽  
Quality Status

Sungai Cidurian adalah salah satu sungai yang mengalir di Kabupaten Tangerang dan Kabupaten Serang yang melintasi 17 (tujuh belas) kecamatan dan 2 (dua) kabupaten dengan panjang 67,5 Km. Kajian dilakukan untuk menganalisis status kualitas air Sungai Cidurian pada segmen hilir agar dapat mengetahui kondisi dan tingkat status mutu airnya sehingga dapat mengambil kebijakan pengelolaan dan pengendalian pencemaran dengan tepat. Penelitian dilakukan pada saat musim kemarau dan musim hujan. Nilai status mutu air dianalisis dengan Metode Indeks Pencemaran (IP) yang perhitungannya mengacu pada KepMen LH No. 115 Tahun 2003 tentang Pedoman Penentuan Status Mutu Air.  Hasilnya menunjukan pada 4 (empat) lokasi titik sampling memperlihatkan rata-rata nilai Indeks Pencemaran (IP) pada hilir sungai dalam kondisi baik dan cemar ringan berdasarkan Baku Mutu Kelas II PP 22/2021, untuk nilai Indeks Pencemaran (IP) terendah sebesar 0,66 dan tertinggi sebesar 1,56. ABSTRACTThe Cidurian River is one of the rivers that flows in Tangerang Regency and Serang Regency which crosses 17 (seventeen) sub-districts and 2 (two) districts with a length of 67.5 Km. The study was carried out to analyze the water quality status of the Cidurian River in the downstream segment in order to know the condition and level of the water quality status so that it could take appropriate pollution management and control policies. The research was conducted during the dry season and the rainy season. The value of water quality status was analyzed by using the Pollution Index Method (IP), the calculation refers to the Minister of Environment Decree No. 115 of 2003 concerning Guidelines for Determining Water Quality Status. The results show that at 4 (four) sampling point locations, the average Pollution Index (IP) value in the downstream river is in good condition and lightly polluted based on the Class II PP 22/2021 Quality Standard, for the lowest Pollution Index (IP) value of 0, 66 and the highest of 1.56.

Prevention and Control of Water Pollution Based on Ecosystem Management (EM): A Case Study of Poyang Lake

2013 ◽  
Vol 295-298 ◽  
pp. 1575-1579 ◽  
Author(s):  
Qi Yong Yang ◽  
Xin Hua Zhang ◽  
Zhong Wei Wu
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Ecosystem Management ◽  
Prevention And Control ◽  
Poyang Lake ◽  
Pollution Prevention ◽  
Lake Basin ◽  
Poyang Lake Basin ◽  
Pollution Prevention And Control ◽  
And Control

The water quality monitoring revealed that the water quality in Poyang Lake is increasely degenerating in the past several years and the deterioration reasons were analyzed. The increasingly serious water pollution indicated that there were inherent drawbacks in current environmental management system of China. Therefore, the typical models of water pollution prevention and control in developed countries and China were researched. The explorations of water pollution prevention and control based on ecosystem management for Poyang Lake were reviewed, especially the practice of Mountain-River-Lake (MRL) Program in Poyang Lake Basin. At last, the challenges of water pollution prevention and control in Poyang Lake Basin was put forword such as law and policy, organization structure, participation mechanism. The researches indicated that the multiplicity and complexity of nature, humanities, society and economy in Poyang Lake determined its importance and necessity to implement ecosystem-based water environment management. In the future construction of water pollution prevention model based on integrated ecosystem management is an inevitable trend for Poyang Lake basin.

Steel Storage Tank Shell Settlement Assessment Based on Finite Element and API Standard 653 Analyses

2008 ◽  
Author(s):  
Mohamed R. Chebaro ◽  
Nader Yoosef-Ghodsi ◽  
Howard K. Yue
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Storage Tank ◽  
Field Data ◽  
Specific Information ◽  
Storage Tanks ◽  
Element Analysis ◽  
Fea Model ◽  
Actual Field ◽  
Allowable Settlement

API Standard 653 addresses issues related to the inspection, repair, alteration and reconstruction of steel storage tanks built according to API Standard 650 or API 12C to help maintain tank integrity. Although the standard covers three types of tank settlement, namely edge, bottom and shell, this paper focuses on the assessment of shell settlement. It also provides a comparison between an analytical model based on API Standard 653 and a finite element analysis (FEA) model that replicates field operating loading and settlement conditions of storage tanks. A basis for comparison between both models was established from the maximum allowable settlement and strain values. Several scenarios were generated using actual field data collected from steel storage tanks located in Alberta to illustrate the correlation between the two models. Specific information on the storage tanks under consideration cannot be disclosed for confidentiality reasons.

scholarly journals Flaw Stability in Mild Steel Tanks in the Upper-Shelf Ductile Range—Part II: J-Integral-Based Fracture Analysis

1999 ◽  
Vol 122 (2) ◽  
pp. 169-173 ◽  
Author(s):  
Poh-Sang Lam ◽  
Robert L. Sindelar
Keyword(s):  
Mild Steel ◽  
Storage Tank ◽  
J Integral ◽  
Storage Tanks ◽  
Close Approximation ◽  
Fluid Level ◽  
Element Analysis ◽  
Steel Tanks ◽  
The Stability ◽  
Range Part

The J-integral fracture methodology was applied to evaluate the stability of postulated flaws in mild steel storage tanks. The material properties and the J-resistance JR curve were obtained from the archival A285 Grade B carbon steel test data. The J-integral calculation was based on the center-cracked panel (CCP) solution of Shih and Hutchinson (1976, ASME J. Eng. Mater. Technol. 98, pp. 289–295). A curvature correction was applied to account for the cylindrical shell configuration. A finite element analysis of an arbitrary flaw in the storage tank demonstrated that the curvature-corrected CCP solution is a close approximation. The maximum storage tank fluid level for a postulated flaw size can be established based on the J-integral flaw stability methodology. [S0094-9930(00)00502-3]

scholarly journals The effectiveness of large household water storage tanks for protecting the quality of drinking water

2007 ◽  
Vol 5 (2) ◽  
pp. 307-313 ◽  
Author(s):  
Jay P. Graham ◽  
James VanDerslice
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Storage Tank ◽  
Water Storage ◽  
Free Chlorine ◽  
Drinking Water Quality ◽  
Water Delivery ◽  
Storage Tanks ◽  
Total Coliforms

Many communities along the US-México border remain without infrastructure for water and sewage. Residents in these communities often collect and store their water in open 55-gallon drums. This study evaluated changes in drinking water quality resulting from an intervention that provided large closed water storage tanks (2,500-gallons) to individual homes lacking a piped water supply. After the intervention, many of the households did not change the source of their drinking water to the large storage tanks. Therefore, water quality results were first compared based on the source of the household's drinking water: store or vending machine, large tank, or collected from a public supply and transported by the household. Of the households that used the large storage tank as their drinking water supply, drinking water quality was generally of poorer quality. Fifty-four percent of samples collected prior to intervention had detectable levels of total coliforms, while 82% of samples were positive nine months after the intervention (p < 0.05). Exploratory analyses were also carried out to measure water quality at different points between collection by water delivery trucks and delivery to the household's large storage tank. Thirty percent of the samples taken immediately after water was delivered to the home had high total coliforms (>10 CFU/100 ml). Mean free chlorine levels dropped from 0.43 mg/l, where the trucks filled their tanks, to 0.20 mg/l inside the household's tank immediately after delivery. Results of this study have implications for interventions that focus on safe water treatment and storage in the home, and for guidelines regarding the level of free chlorine required in water delivered by water delivery trucks.

scholarly journals Wind-resistant optimization design of large storage tanks in island-type petrochemical parks

2021 ◽  
Vol 261 ◽  
pp. 01017
Author(s):  
Haoran Hu ◽  
Jian Guo ◽  
Bingyuan Hong ◽  
Yan Yan ◽  
Xu Yang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Storage Tank ◽  
Optimization Design ◽  
Ring Structure ◽  
Strong Wind ◽  
Storage Tanks ◽  
Static Structure ◽  
Element Analysis ◽  
Oil Storage ◽  
The Finite Element Analysis

Due to the thin-walled wind-sensitive structures of large crude oil storage tanks, it is necessary to consider the wind load failure of oil storage tanks in coastal areas under strong wind conditions during the design process. Based on the finite element analysis software ANSYS\Workbench, the static structure analysis and buckling analysis of the 100, 000 cubic crude oil storage tanks are carried out. In order to solve the buckling failure phenomenon, a wind-resistant ring structure was optimal designed for the crude oil storage tank according to standards, so that the storage tank can withstand hurricanes and typhoons above level 12 with a wind speed of 137 km/h.

scholarly journals The Dynamic Detection of Water Quality Monitoring and Pollution Prevention and Control

2022 ◽  
Vol 2152 (1) ◽  
pp. 012017
Author(s):  
Keke Zou
Keyword(s):  
Water Quality ◽  
Prevention And Control ◽  
Clustering Algorithm ◽  
Pollution Prevention ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Detection Technology ◽  
Pollution Prevention And Control ◽  
Dynamic Detection ◽  
And Control

Abstract With the development of society, the material living standard of our people has been significantly improved, but we sacrificed the environment in the course of development, which led to the current number of environmental problems in our country is particularly large, so that now we need to pick up the tone of protecting the environment, so now the overall tone of the country is to protect the environment, adhere to the green water green mountain is the basic strategy of Jinshan Yinshan, play a good pollution prevention and control of the three major battles, care for the environment, protect the environment. And in the environment water is the most important, it carries everything, the purpose of this paper is to study based on water quality monitoring and pollution prevention and control of dynamic detection technology. In order to conduct the experiment better, after consulting the literature on water quality monitoring and pollution prevention and control, and dynamic detection technology, we used a variety of algorithms to construct a corresponding dynamic detection technology system to monitor water quality and conduct real-time surveys of pollutants, and obtain relevant experimental data to complete the experiment. The experimental results show that the improved adaptive parameter DBSCAN clustering algorithm is better than the AdaBoost algorithm and the genetic algorithm, so we finally choose to build a dynamic detection technology system using the improved adaptive parameter DBSCAN clustering algorithm.

Particle behaviour consideration to maximize the settling capacity of rainwater storage tanks

2007 ◽  
Vol 56 (11) ◽  
pp. 73-79 ◽  
Author(s):  
M.Y. Han ◽  
J.S. Mun
Keyword(s):  
Water Quality ◽  
Retention Time ◽  
Storage Tank ◽  
Storage Tanks ◽  
Rainfall Runoff ◽  
System Configuration ◽  
Runoff Water ◽  
Rainwater Tank ◽  
Quality Aspects ◽  
Rainwater Runoff

Design of a rainwater storage tank is mostly based on the mass balance of rainwater with respect to the tank, considering aspects such as rainfall runoff, water usage and overflow. So far, however, little information is available on the quality aspects of the stored rainwater, such as the behavior of particles, the effect of retention time of the water in the tank and possible influences of system configuration on water quality in the storage tank. In this study, we showed that the performance of rainwater storage tanks could be maximized by recognizing the importance of water quality improvement by sedimentation and the importance of the system configuration within the tank, as well as the efficient collection of runoff. The efficiency of removal of the particles was increased by there being a considerable distance between the inlet and the outlet in the rainwater storage tank. Furthermore, it is recommended that the effective water depth in a rainwater tank be designed to be more than 3 m and that the rainwater be drawn from as close to the water surface as possible by using a floating suction device. An operation method that increases the retention time by stopping rainwater supply when the turbidity of rainwater runoff is high will ensure low turbidity in the rainwater collected from the tank.

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