摘要
在实验室模拟生态条件下，运用投放复合微生物、微生物合酶菌液、添加营养促生剂、水底界面曝气等不同方法对养殖池塘污染底泥进行生物-生态修复；检测底泥及上覆水在不同生物修复技术作用下溶氧、氨氮、硝态氮、CODcr现、TOC、底泥生物降解能力（G值）、异养细菌数量和反硫化细菌数量等指标的动态变化，据此评价不同修复技术的生态效应。结果表明，4种不同的生物生态方法均对污染底泥产生了一定的修复作用，其中以VB997底泥营养促生剂组的综合修复效果最为理想，在为期60d的实验中，底表水CODcr消除率达70．00％，底泥生物降解能力（G值）从12．00kg／（kg·h）提高至45．60kg／（kg·h），底泥表面形成1．80～2．20cm灰白色氧化层。曝气组溶氧充足，底层130一直保持在7．00mg／L以上，底表水呱消除率达69．25％，G值从14．30kg／（kg·h）升高到34．20kg／（kg·h）。实验同时表明，几种生物制剂和营养促生剂的添加能导致上覆水硝态氮和氨态氮含量的升高，促进浮游藻类的阶段性滋生。
Based on the actuality of sediment in seawater pool, an experiment on bioremediation of polluted sediment was made by several ecology methods such as adding microbe compound （two genus, Hongbao made in Shanghai, LLMO made in America）, nutritious liquid （VB997） and aerating oxygen in interface between water and sediment. Then the levels of DO, NH4^ ＋ -N, NO3^--N, CODcr, TOC, heterotrophic bacteria and anti-vulcanization bacteria were tested during the experiment period （Mar. 26 - May. 27, 2004）. The results showed that after 60 days, the bioremediation effect of VB997 group was the best. The value of G ranged from 12.00 kg/（kg·h） to 45.60 kg/（kg·h） ; the rate of CODcr of the bottom water removed was 70.00 %. And the oxidation stratum shaped in the sediment surface reached 1.80 - 2.20 cm. The group of aerating was full of oxygen, and DO level was maintained higher than 7.00 mg/L; the rate of COD in the bottom water removed was 69.25 % ; the value of G ascended from 14.30 kg/（kg· h） to 34.20 kg/（kg· h）. The results also indicated that adding microbe compound and nutritious reagent would raise the contents of NH4^ ＋ -N and NO3^ -N in the bottom water and improve the pelagic algae＇s development in phase.
出处
《中国水产科学》
CAS
CSCD
北大核心
2006年第1期140-145,共6页
Journal of Fishery Sciences of China
基金
浙江省自然科学基金资助项目(302107)
关键词
底泥
有机污染
生物修复
曝气
sediment
organic compound
bioremediation
microorganism
