BF-BAF+微滤工艺对黑臭河道治理示范工程

DEMONSTRATION PROJECT EVALUATION OF BF-BIOLOGIACL AERATED FILTER+ MICRO-FILTRATION PROCESS FOR BLACK AND ODOROUS RIVER TREATMENT

黑臭水体形成原因主要是大量污染物进入水体,其总量超过水体自净极限,造成环境恶化。采用“BF-BAF+微滤”处理工艺,对黑臭河道进行异位治理。结果表明:系统运行60d,ρ(COD)从(77.30±21.04)mg/L降低到(46.75±8.64)mg/L;ρ(NH+4-N)从(19.71±4.64)mg/L降低到(6.67±1.22)mg/L;氧化还原电位从(-57.01±36.87)mV提升到(88.25±18.64)mV;ρ(DO)从(0.30±0.14)mg/L提升到(5.21±1.85)mg/L;透明度从(14.00±4.55)cm提升到(48.25±3.30)cm。系统运行费用仅为0.4元/t(水)。项目采用“BF-BAF+微滤”处理工艺对黑臭水体进行异位治理,经济投资低,占地面积小,操作简单,且可快速消除水体黑臭。

Excessive discharge of nitrogen and phosphorus contaminants, exceeding the self-purification capability of river, is the main reason for the black and odorous water.Demonstration project evaluation of BF-biological aerated filter+micro-filtration process for black and odorous river ectopic emergency treatment was carried out.Results showed that COD, NH + 4-N, oxidation reduction potential (ORP), dissolved oxygen (DO), transparency of the black and odorous river water decreased from (77.30±21.04) mg/L,(19.71±4.64) mg/L,(-57.01±36.87) mV,(0.30±0.14) mg/L,(14.00±4.55) cm to (46.75±8.64) mg/L,(6.67±1.22) mg/L,(88.25±18.64) mV,(5.21±1.85) mg/L,(48.25±3.30) cm, respectively, after treated by this combined process, meeting the guiding requirements for remediation of urban black and odorous water bodies in China.The operating cost of the system was as low as RMB 0.4 yuan/ton.And this demonstration project for black and odorous river treatment had the advantages of low economic investment, simple operation, small floor space, and fast improvement of the water quality.