人工湿地对猪场废水有机物处理效果的研究

应用生态学报 ›› 2002, Vol. ›› Issue (1): 113-117.

人工湿地对猪场废水有机物处理效果的研究

廖新俤, 骆世明

华南农业大学热带亚热带生态研究所, 广州 510642

收稿日期:2001-03-12 修回日期:2001-05-17 出版日期:2002-01-15
通讯作者: 廖新俤,男,1968年生,博士,副教授,主要从事动物环境与生态研究.发表论文20余篇.E-mail:xdliao@163.net
基金资助:
国家“九五”科技攻关项目(96003040103)

Treatment effect of constructed wetlands on organic matter in wastewater from pig farm

LIAO Xindi, LUO Shiming

Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou 510642

Received:2001-03-12 Revised:2001-05-17 Online:2002-01-15

摘要/Abstract

摘要： 分别以香根草(Vetiveria zizanioides)和风车草(Cyperus alternifolius)为植被,按1.0m×0.5m×0.8m建立人工湿地,通过4季测试,研究其对猪场废水有机物的净化功能及其随季节、进水浓度及水力停留时间变化的规律.结果表明,4个季节香根草或风车草人工湿地对COD和BOD有较稳定的去除效果,两湿地抗有机负荷冲击能力强.在春季,停留时间1～2d,COD和BOD去除率分别为70%和80%;在夏季,进水COD高达1000～1400mg·L^-1情况下,COD去除率接近90%;在秋季,停留时间1～2d,COD和BOD去除率分别为50%～60%和50%;在冬季,进水COD达1003mg·L^-1情况下,COD去除率在70%以上.COD、BOD和SS的去除率在两湿地间没有显著差异.人工湿地污染物(Y)随水力停留时间(t)延长的降解遵从指数方程规律Y_t=Y₀e^(-kt).在相同停留时间时,随进水污染物浓度(x)提高的出水污染物浓度(y)的回归关系遵从直线方程规律y=a+bx.

Abstract: Using plant species Vetiveria zizanioides and Cyperus alternifolius respectively,two constructed wetlands (CWS) with size of 1.0m×0.5m×0.8m were established.The purifying function and its change pattern with season,influent concentration and hydraulic retention time (HRT) of the constructed wetlands on the organic matters in wastewater from a pig farm were studied throughout four seasons in the year.The results showed that the two CWShad very stable effects on the removal of CODand BOD,while the organic matters in wastewater changed.The removal rate of CODand BODwas 70% and 80% respectively by HRT 1～2 d in spring.The removal rate of CODreached 90% with the influent of COD 1000～1400mg·L^-1 in summer.The removal rate of CODand BODwas 50～60% and 50% respectively by HRT 1～2 d in autumn.The removal rate of CODreached 70% with the influent of COD 1003mg·L^-1 in winter.There was no significant difference between two CWSin the removal of COD,BODand SS.The rule of contaminants decreased with the HRTin CWSfollowed exponential function:Y_t=Y₀exp(-kt).The relation between the concentration of contaminants in influent (x) and outflow (y) at the same HRTfollowed linear relation:y=a+bx.

中图分类号:

X703

廖新俤, 骆世明. 人工湿地对猪场废水有机物处理效果的研究[J]. 应用生态学报, 2002, (1): 113-117.

LIAO Xindi, LUO Shiming . Treatment effect of constructed wetlands on organic matter in wastewater from pig farm[J]. Chinese Journal of Applied Ecology, 2002, (1): 113-117.

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