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美国饮用水余氯应用案例

来源：上海博取仪器有限公司分类：应用方案 2024-03-29 15:15:07 10阅读次数

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根据世界卫生组织（WHO）的规定，居民所用的水须在pH值小于8.0的环境下与余氯的浓度≥0.5mg/L的溶液接触至少半个小时，以确保水质安全可靠。这个标准适用于直接饮用从水龙头中流出的水。余氯是一种用于消毒的水处理剂，它能有效地防止水传播疾病。在水中，余氯能够杀死细菌、病毒和其他病原体，保障水质的卫生安全。余氯的含量在0.5mg/L以上就足够保持水质的卫生安全。

该现场自动化公共井的出水口通过安装博取的余氯分析仪，能及时监测余氯浓度，以确保水中的余氯浓度在安全范围内。安装博取的壁挂式超声波流量计，用于测量出水口的流量；通过测量流量，可以了解公共井的供水量，为水资源的调度和管理提供重要信息。安装液位计用于监测公共井中的水位，通过测量水位，可以了解公共井的储水量，及时发现水位异常情况，避免溢流或抽空等现象对设备和水质造成影响。这些仪表的安装可以实现自动化监测和控制，提高公共井的运行效率和水质安全性，为居民提供更加稳定和可靠的自来水供应。

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[8]未定义数组索引: page
[2]Declaration of app\common\model\TechNewsCategory::getList($filter = Array) should be compatible with app\common\model\BaseModel::getList($filter = Array, $sort = Array)
[8]未定义数组下标: 0
[2]Declaration of app\common\model\TechNews::getAllList($filter = Array, $limit = 10, $order = Array, $with = Array) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\Company::getAllList($filter = Array, $limit = 20) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8]未定义数组索引: center
[8]Only variables should be passed by reference
[2]Declaration of app\common\model\TechNewsComment::getAllList($filter = Array, $limit = 16) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8192]Function create_function() is deprecated
[8192]Function create_function() is deprecated
[8]未定义数组索引: area
[8]未定义数组索引: st
[2]Declaration of app\common\model\Topic::getList($filter = Array) should be compatible with app\common\model\BaseModel::getList($filter = Array, $sort = Array)
[2]Declaration of app\common\model\Topic::getAllList($filter = Array, $field = 'id,md5,tit...', $limit = 0) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\TopicInfoList::getAllList($filter = Array, $limit = 8) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\News::getAllList($filter = Array, $limit = 16, $order = Array, $with = Array) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8]未定义数组索引: center
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: cid
[8]未定义数组索引: goods_list
[8]未定义数组下标: 0
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: wtt_list

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[ SQL ] SELECT `id`,`name` FROM `tech_news_category` WHERE `is_show` = 1 [ RunTime:0.000309s ]
[ SQL ] SELECT * FROM `tech_news_category` WHERE `parent_id` = 0 AND `is_show` = 1 ORDER BY `sort` ASC,`id` DESC [ RunTime:0.000526s ]
[ SQL ] SHOW COLUMNS FROM `company` [ RunTime:0.001004s ]
[ SQL ] SHOW COLUMNS FROM `tech_news` [ RunTime:0.000962s ]
[ SQL ] SELECT * FROM `tech_news` WHERE `md5` = '57b829777b43e3cd' AND `review_status` = 1 LIMIT 1 [ RunTime:0.000401s ]
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[ SQL ] SELECT * FROM `company` WHERE `id` = 568 [ RunTime:0.000521s ]
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[ SQL ] SHOW COLUMNS FROM `tech_news_belong_category` [ RunTime:0.000951s ]
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[ SQL ] SHOW COLUMNS FROM `tech_news_comment` [ RunTime:0.000747s ]
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[ SQL ] SHOW COLUMNS FROM `topic_info_list` [ RunTime:0.000874s ]
[ SQL ] SELECT * FROM `topic_info_list` WHERE `topic_id` = 1 ORDER BY `id` DESC LIMIT 2 [ RunTime:0.000177s ]
[ SQL ] SHOW COLUMNS FROM `news` [ RunTime:0.000799s ]
[ SQL ] SELECT * FROM `news` WHERE `id` IN (864,849) [ RunTime:0.000239s ]
[ SQL ] SELECT `id`,`md5`,`title`,`created_time` FROM `tech_news` WHERE `review_status` = 1 AND `is_show` = 1 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000225s ]
[ SQL ] SHOW COLUMNS FROM `user` [ RunTime:0.000872s ]
[ SQL ] SELECT `a`.* FROM `user` `a` INNER JOIN `tech_news` `b` ON `a`.`id`=`b`.`user_id` GROUP BY `a`.`id` ORDER BY `b`.`id` DESC LIMIT 10 [ RunTime:0.005631s ]
[ SQL ] SELECT * FROM `user_info` WHERE `user_id` IN (224,13,239,598,697,394,285,190,502,557) [ RunTime:0.000855s ]
[ SQL ] SHOW COLUMNS FROM `seo` [ RunTime:0.000856s ]
[ SQL ] SELECT * FROM `seo` WHERE `column_type` = '16' AND `page_type` = 'tech_news' AND `info_id` = 3152 LIMIT 1 [ RunTime:0.000254s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 3152 [ RunTime:0.001256s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 3128 [ RunTime:0.001159s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 2846 [ RunTime:0.001213s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 2651 [ RunTime:0.001274s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 2517 [ RunTime:0.001083s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 2152 [ RunTime:0.001179s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 2030 [ RunTime:0.000856s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 1409 [ RunTime:0.001094s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 1366 [ RunTime:0.001172s ]
[ SQL ] SELECT * FROM `tech_news_belong_category` WHERE `tech_news_id` = 1364 [ RunTime:0.001054s ]
[ SQL ] SELECT * FROM `user` WHERE `id` = 450 LIMIT 1 [ RunTime:0.000206s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 224 LIMIT 1 [ RunTime:0.000232s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 224 LIMIT 1 [ RunTime:0.000337s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 13 LIMIT 1 [ RunTime:0.000159s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 13 LIMIT 1 [ RunTime:0.000308s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 239 LIMIT 1 [ RunTime:0.000153s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 239 LIMIT 1 [ RunTime:0.000150s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 598 LIMIT 1 [ RunTime:0.000311s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 598 LIMIT 1 [ RunTime:0.000153s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 697 LIMIT 1 [ RunTime:0.000257s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 697 LIMIT 1 [ RunTime:0.000127s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 394 LIMIT 1 [ RunTime:0.000119s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 394 LIMIT 1 [ RunTime:0.000114s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 285 LIMIT 1 [ RunTime:0.000116s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 285 LIMIT 1 [ RunTime:0.000110s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 190 LIMIT 1 [ RunTime:0.000108s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 190 LIMIT 1 [ RunTime:0.000115s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 502 LIMIT 1 [ RunTime:0.000111s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 502 LIMIT 1 [ RunTime:0.000110s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 557 LIMIT 1 [ RunTime:0.000119s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 557 LIMIT 1 [ RunTime:0.000108s ]

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