Research on the Benign Operation Risk Assessment of Rural Drinking Water Safety Engineering

2011 ◽  
Vol 403-408 ◽  
pp. 5220-5224
Author(s):  
Chang Qing Qi
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Environmental Risk ◽  
Management System ◽  
Risk Model ◽  
Assessment System ◽  
Impact Factors ◽  
Safety Engineering ◽  
Water Safety ◽  
Drinking Water Safety

The paper establishes risk assessment system of benign operation of rural drinking water safety engineering in such seven aspects as political & legal risk, geographical risk, macro-economic environmental risk, micro-economic environmental risk, water users’ satisfaction risk, daily management system & implement of risk, emergency management system risk and etc., and makes an analysis of specific impact factors in each part, and applies matter-element model to establish risk model on benign operation of rural drinking water safety engineering.

Study on Mechanism Design of Rural Drinking Water Safety Engineering Project Financing Guarantee

2013 ◽  
Vol 361-363 ◽  
pp. 674-681
Author(s):  
Wei Li
Keyword(s):  
Drinking Water ◽  
Mechanism Design ◽  
Safety Engineering ◽  
Project Financing ◽  
Water Safety ◽  
Public Fund ◽  
Engineering Project ◽  
Drinking Water Safety ◽  
Project Construction ◽  
Set Up

As more and more non-public fund entering rural drinking water safety engineering project market; it becomes very necessary to built rural drinking water safety engineering project guarantee mechanism. This paper proposes three steps of mechanism design. Firstly, history data is used to fit multivariate linear equation set up describing relationship between bank loss and key risk factors. Secondly, guarantee fee is calculated through model regression, which is threefold of possible bank loss. Thirdly, guarantee fee is adjusted according to variety of key risk factor in the process of project construction and operating.

Study on the Problems and Countermeasures of Rural Drinking Water Safety Engineering Construction and Management in China

2013 ◽  
Vol 357-360 ◽  
pp. 2273-2276
Author(s):  
Xiao Ke He ◽  
Cheng Min Qin
Keyword(s):  
Drinking Water ◽  
Legal Person ◽  
Safety Engineering ◽  
Safe Drinking Water ◽  
Water Safety ◽  
Engineering Construction ◽  
Water Project ◽  
Drinking Water Safety ◽  
Project Construction ◽  
Operation And Management

The construction of China's rural drinking water safety project to have achieved stage results was summarized, and has analyzed the problems of the direction of investment and money management to be not clear, the project legal person subject to be unknown, project bidding to be not real, construction quality to be not high, poor operation and management in China rural safe drinking water project construction and management. The countermeasures have been put forward to solve the problems.

Toxicologic Risk Assessment Issues for Drinking Water Safety

1992 ◽  
Vol 11 (3) ◽  
pp. 311-319
Author(s):  
Richard D. Thomas
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
National Research Council ◽  
Chemical Exposure ◽  
Epidemiologic Studies ◽  
Current View ◽  
Water Safety ◽  
Drinking Water Safety ◽  
Assessment Procedures ◽  
A Current

The intent of this presentation is to review the studies conducted by the National Research Council (NRC) where risk assessment was the central theme and to present both a current view and some ideas for the future of risk assessment procedures for drinking water. Although the principal interest is in the use of toxicologic data in assessing risk, nonetheless, mention is made of the use of epidemiologic studies and other types of research investigations that may produce useful information for estimating risk to humans from chemical exposure.

scholarly journals How can the UK statutory Cryptosporidium monitoring be used for Quantitative Risk Assessment of Cryptosporidium in drinking water?

2007 ◽  
Vol 5 (S1) ◽  
pp. 107-118 ◽  
Author(s):  
P. W. M. H. Smeets ◽  
J. C. van Dijk ◽  
G. Stanfield ◽  
L. C. Rietveld ◽  
G. J. Medema
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
State Of The Art ◽  
Quantitative Risk Assessment ◽  
Source Water ◽  
Water Safety ◽  
Drinking Water Safety ◽  
Full Benefit ◽  
The Uk ◽  
Treated Drinking Water

Quantitative Microbiological Risk Assessment (QMRA) is increasingly being used to complement traditional verification of drinking water safety through the absence of indicator bacteria. However, the full benefit of QMRA is often not achieved because of a lack of appropriate data on the fate and behaviour of pathogens. In the UK, statutory monitoring for Cryptosporidium has provided a unique dataset of pathogens directly measured in large volumes of treated drinking water. Using this data a QMRA was performed to determine the benefits and limitations of such state-of-the-art monitoring for risk assessment. Estimates of the risk of infection at the 216 assessed treatment sites ranged from 10−6.5 to 10−2.5 person−1 d−1. In addition, Cryptosporidium monitoring data in source water was collected at eight treatment sites to determine how Cryptosporidium removal could be quantified for QMRA purposes. Cryptosporidium removal varied from 1.8 to 5.2 log units and appeared to be related to source water Cryptosporidium concentration. Application of general removal credits can either over- or underestimate Cryptosporidium removal by full-scale sedimentation and filtration. State-of-the-art pathogen monitoring can identify poorly performing systems, although it is ineffective to verify drinking water safety to the level of 10-4 infections person−1 yr−1.

Study of Rural Drinking Water Safety Engineering Management

2014 ◽  
Vol 484-485 ◽  
pp. 558-561
Author(s):  
Wei Li
Keyword(s):  
Drinking Water ◽  
Rural Areas ◽  
Engineering Management ◽  
Safety Engineering ◽  
Safe Drinking Water ◽  
Water Safety ◽  
Water Project ◽  
Drinking Water Safety

In recent years, all levels of government take solving the problem of safe drinking water in rural areas as a major initiative to ensure peoples livelihood. In the process of construction and management of rural safe drinking water project, government, enterprises and users are playing their own roles. The article proposes solutions to the problems that exist in the rural drinking water safety projects, by analyzing the roles of government, enterprises and users, in the management of rural safe drinking water project. It has certain referential significance to the construction and management of rural safe drinking water project.

scholarly journals Incorporation of the Multiple Barrier Approach in drinking water risk assessment tools

2010 ◽  
Vol 9 (2) ◽  
pp. 349-360 ◽  
Author(s):  
Ian Michael Summerscales ◽  
Edward A. McBean
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Water Contamination ◽  
Disease Outbreaks ◽  
Assessment Tools ◽  
Water Safety ◽  
Drinking Water Contamination ◽  
Drinking Water Safety ◽  
Risk Assessment Tools ◽  
Developed Nations

A number of existing risk assessment tools make reference to, or incorporate, a Multiple Barrier Approach to drinking water safety. Three waterborne disease outbreaks that occurred in developed nations were used as case studies to test a selected set of risk assessment tools. The outbreaks were used to determine how well the risk assessment tools identify hazards and vulnerabilities associated with different barriers to drinking water contamination.

Integrated risk assessment and screening analysis of drinking water safety of a conventional water supply system

2007 ◽  
Vol 56 (6) ◽  
pp. 47-56 ◽  
Author(s):  
F. Sun ◽  
J. Chen ◽  
Q. Tong ◽  
S. Zeng
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Water Supply ◽  
Supply System ◽  
Water Supply System ◽  
Water Supply Systems ◽  
Assessment Procedure ◽  
Water Safety ◽  
Screening Analysis ◽  
Drinking Water Safety

Management of drinking water safety is changing towards an integrated risk assessment and risk management approach that includes all processes in a water supply system from catchment to consumers. However, given the large number of water supply systems in China and the cost of implementing such a risk assessment procedure, there is a necessity to first conduct a strategic screening analysis at a national level. An integrated methodology of risk assessment and screening analysis is thus proposed to evaluate drinking water safety of a conventional water supply system. The violation probability, indicating drinking water safety, is estimated at different locations of a water supply system in terms of permanganate index, ammonia nitrogen, turbidity, residual chlorine and trihalomethanes. Critical parameters with respect to drinking water safety are then identified, based on which an index system is developed to prioritize conventional water supply systems in implementing a detailed risk assessment procedure. The evaluation results are represented as graphic check matrices for the concerned hazards in drinking water, from which the vulnerability of a conventional water supply system is characterized.

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