东辽河辽源段非点源污染估算与变化规律分析  

Non-point Source Pollution Estimation and Variation Analysis in East Liao River Liaoyuan Segment

作　　者：李杰[1] 余麟[1] 许君雨[1] 张利静[1] 王宪恩[1] 段海燕[1] 

机构地区：[1]吉林大学地下水资源与环境教育部重点实验室,长春130021

出　　处：《科学技术与工程》2013年第29期8691-8696,共6页Science Technology and Engineering

基　　金：国家"水体污染控制与治理科技重大专项"基金(2012ZX07202-009;2009ZX07207-001-03)资助

摘　　要：控制非点源污染排放成为东辽河辽源段水污染治理的重要环节。采用枯水期日均污染负荷对径流分割法进行了修正,将其应用于东辽河辽源段非点源COD和氨氮负荷的估算,并运用Pearson相关系数分析非点源污染负荷与当地降水量之间的相关性。研究表明,东辽河辽源段非点源污染具有年际变化大、年内分布不均的特点,非点源COD占比为50%～65%,非点源氨氮占比约为30%～50%,该河段非点源污染严重。东辽河非点源污染年内月际分布不均、月际变化大,COD主要集中在7、8月,主要由夏季大量降水引起;氨氮则有3月和7月两次高峰,主要是由于污染物随春季融雪入河和夏季汛期与水冲刷共同导致;非点源污染与降水量具有较强的相关性。Control of non-point source pollution becomes an important part of pollution control in East Liao River Liaoyuan segment.Average daily pollution load of dry season is used to revise the runoff division method.And the revised method is applied to estimate the non-point COD and ammonia nitrogen＇ s load in East Liao River Liaoyuan segment.Pearson correlation coefficient is also calculated to analyze the correlation between non-point source pollution load and precipitation.The results show that non-point source pollution changes a lot in different year and different month.Non-point COD accounts for about 50％-45％,while non-point ammonia nitrogen accounts for about 30％-50％.Therefore,the East Liao River Liaoyuan segment is heavily polluted.The intermonthly non-point source pollution also changes a lot.Non-point COD mainly occurs in July and August,which is caused by rainfall in summer.Non-point ammonia nitrogen mainly occurs in March and July,which is caused by snowmelt in spring and rainfall in summer.Non-point source pollution and precipitation have a strong correlation.

关 键 词：东辽河 非点源污染 变化规律分析 径流分割法 Pearson相关系数 

分 类 号：X522[环境科学与工程—环境工程]