摘要
应用全场数学模型模拟了深圳排海的市政污水中悬浮物、化学需氧量、无机氮、活性磷酸盐及大肠菌群5个污染因子在海域大潮和小潮时对海域面积的影响。指出在不同水文条件和23m3/d排放量下,不同质量浓度的活性磷酸盐和大肠菌群超过Ⅲ类海水水质标准的影响面积在大潮时分别为0 04km2和7 72km2,小潮时分别大于0 08km2和6 16km2;无机氮由于海水本底值较高,使得这一指标在全海域内超过Ⅲ类海水水质标准;而化学需氧量和总悬浮物质量浓度符合Ⅲ类海水水质标准。通过将现场监测资料用数模计算,提出排海污水混合区面积为1 5km2。同时还引用部分国外的计算公式,对几种混合区允许范围进行了估算。
Mathematic model was used to simulate the impact of total suspended substance, COD, inorganic nitrogen, active phosphate and coliform group bacteria in Shenzhen's municipal wastewater released to sea when in spring tide and in low tide. Under difference hydrographic condition and emission currency of 23 m3/d, when concentration of active phosphate and coliform group bacteria were beyond Ⅲ, their influence area to sea were 0.04 km2 and 7.72 km2 when in spring tide, and were more than 0.08 km2 and 6.16 km2 when in low tide. For inorganic nitrogen, because the background value of sea water was high, so it is beyond Ⅲ sea water. For COD and total suspended substance, there had no effect. After computing using site monitoring data, the wastewater discharge region area was 1.5 km2.
出处
《环境监测管理与技术》
2002年第6期37-40,共4页
The Administration and Technique of Environmental Monitoring
关键词
全场数学模型
市政污水排海工程
排污混合区
水质监测
Site mathematical model
Municipal wastewater
Release to Sea Project
Pollution discharge area
Shenzhen
