新闻
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China

黑臭水体根源在岸上 核心在管网 关键在排口

2017-08-23 06:42:19   中国青年网

“‘成都治水十条’提出强化生态用水治理,到2022年,全市黑臭水体总体得到消除。从目前工作来看,成都在黑臭水体治理上下了很大功夫。”四川省“千人计划”特聘专家、成都理工大学教授蒲生彦介绍,水体黑臭是一种生物化学现象,当水体遭受严重有机污染时,有机物的好氧分解使水体中耗氧速率大于复氧速率,造成水体缺氧,致使有机物降解不完全、速度减缓,厌氧生物降解过程生成硫化氢、氨气、硫醇等发臭物质,同时形成硫化亚铁、硫化锰等黑色物质,使水体变“黑”。对于城乡居民来说,大家看得见、闻得着、感受最为直观的受污染水体就是城市的黑臭水体。

“水体黑臭的根本原因是污染量超过水体的自净能力。”蒲生彦表示,从成因来说,黑臭在水里,根源在岸上,核心在管网,关键在排口。造成城市黑臭水体污染的原因主要有以下4个:

1、点源污染:排放口直排污废水,合流制管道雨季溢流,分流制雨水管道初期雨水或旱流水、非常规水源补水等;

2、面源污染:城乡结合部地区分散式网状畜禽养殖废水的污染等;

3、内源污染:底泥污染、生物体污染,漂浮物、悬浮物、岸边垃圾,未清理的水生植物,水华藻类等;

4、其他污染:城镇污水厂尾水超标、工业企业事故排放、秋季落叶腐烂产生的腐殖质等。

目前,针对城市黑臭水体的治理技术主要包括生物修复技术、物理修复技术和化学修复技术等。

成都晚报见习记者 叶飞鸿

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China

相关阅读

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
分享到:
0 0
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China

美图推荐

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China

为您推荐

加载更多>>
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/11038989/20170823/31158400.html
Server: cms-8-251
Date: 2024/11/25 03:27:23

Powered by China
China