目的了解北京市朝阳区自备井集中式供水系统运行管理现状,查找供水系统存在的主要风险。方法在北京市朝阳区抽取30口自备井集中式供水系统作为评估对象,参照WHO《Guidelines for drinkingwater quality》的半定量风险评价模型对供水系...目的了解北京市朝阳区自备井集中式供水系统运行管理现状,查找供水系统存在的主要风险。方法在北京市朝阳区抽取30口自备井集中式供水系统作为评估对象,参照WHO《Guidelines for drinkingwater quality》的半定量风险评价模型对供水系统的各个环节进行风险评估。结果北京市朝阳区自备井集中式供水系统中影响供水安全的关键风险点涉及从水源到用户的多个环节,主要风险即关键风险点包括:无安全密闭的井房或设备间(13.33%)、无水处理措施(10.00%)、无简单水质检验设备(93.33%)、不进行消毒剂余量日常检测(92.60%)、管材没有卫生批件(70.00%)、管网老旧(13.33%)。结论北京市朝阳区自备井集中式供水系统存在一定的安全风险,需进一步加强管理。展开更多
Water safety plan as conceived by WHO can lead to prevention of pollution in each component of water supply chain which leads to ensuring safe drinking water. Risk assessment is one of the key components during the de...Water safety plan as conceived by WHO can lead to prevention of pollution in each component of water supply chain which leads to ensuring safe drinking water. Risk assessment is one of the key components during the development of water safety plan, achieved by identifying hazardous events and estimating their risk towards implementing control measures. This study reports the risk assessment from catchment to consumers in Maiduguri water treatment plant in Northeast Nigeria. Tools such as the field visits, key informant interviews, questionnaire and water quality monitoring were used to identify the hazards and estimate their risk using semi-quantitative matrix. With the existing control measures, the study showed a total of 33 hazardous events;5 in catchment, 16 in treatment plant, 6 in distribution system and 6 at consumers’ points. The risk score indicated 6 are of medium risk and 9 of high risk. Catchment activities, upgrade of treatment facilities and lack of routine maintenance in the treatment plant, pipeline damages in distribution lines, and consumers’ lack of hygiene knowledge and awareness were found to be the major contributory factors which affect the desired quality. Therefore participation and commitment by all relevant stakeholders are fundamental requisite to manage the identified health risks.展开更多
文摘目的了解北京市朝阳区自备井集中式供水系统运行管理现状,查找供水系统存在的主要风险。方法在北京市朝阳区抽取30口自备井集中式供水系统作为评估对象,参照WHO《Guidelines for drinkingwater quality》的半定量风险评价模型对供水系统的各个环节进行风险评估。结果北京市朝阳区自备井集中式供水系统中影响供水安全的关键风险点涉及从水源到用户的多个环节,主要风险即关键风险点包括:无安全密闭的井房或设备间(13.33%)、无水处理措施(10.00%)、无简单水质检验设备(93.33%)、不进行消毒剂余量日常检测(92.60%)、管材没有卫生批件(70.00%)、管网老旧(13.33%)。结论北京市朝阳区自备井集中式供水系统存在一定的安全风险,需进一步加强管理。
文摘Water safety plan as conceived by WHO can lead to prevention of pollution in each component of water supply chain which leads to ensuring safe drinking water. Risk assessment is one of the key components during the development of water safety plan, achieved by identifying hazardous events and estimating their risk towards implementing control measures. This study reports the risk assessment from catchment to consumers in Maiduguri water treatment plant in Northeast Nigeria. Tools such as the field visits, key informant interviews, questionnaire and water quality monitoring were used to identify the hazards and estimate their risk using semi-quantitative matrix. With the existing control measures, the study showed a total of 33 hazardous events;5 in catchment, 16 in treatment plant, 6 in distribution system and 6 at consumers’ points. The risk score indicated 6 are of medium risk and 9 of high risk. Catchment activities, upgrade of treatment facilities and lack of routine maintenance in the treatment plant, pipeline damages in distribution lines, and consumers’ lack of hygiene knowledge and awareness were found to be the major contributory factors which affect the desired quality. Therefore participation and commitment by all relevant stakeholders are fundamental requisite to manage the identified health risks.
