高浓度硫酸盐条件下的活性污泥驯化试验研究  

Experimental Study on Coagulation and Sedimentation of Wastewater in Typical Silica Industrial Park

作　　者：孔殿超 张青 张强 董献彬 张勋 Kong Dianchao;Zhang Qing;Zhang Qiang;Dong Xianbin;Zhang Xun(Anhui Environmental Science and Technology Group Co.Ltd,Hefei,Anhui 230088,China)

机构地区：[1]安徽环境科技集团股份有限公司,安徽合肥230088

出　　处：《绿色科技》2021年第14期149-152,共4页Journal of Green Science and Technology

摘　　要：针对高浓度硫酸盐废水生化启动难题,设计了不同组别污泥驯化试验,通过对普通污泥与高效耐盐菌剂的驯化效果进行对比,重点研究了硫酸盐对生化系统污泥生长的影响。实验结果表明:高浓度硫酸盐(SO_(4)^(2-)约7500 mg/L)不会对微生物的生长及代谢产生显著影响,好氧及厌氧条件下微生物均可进行生长代谢,好氧条件下微生物代谢速率优于厌氧条件下的硫酸盐还原代谢速率;Me耐盐菌剂与普通活性污泥相比,在较高浓度的硫酸盐条件下其对COD的降解速率无明显优势;生化段内活性污泥接种组中微生物的高效生长代谢现象表明园区废水中的硫酸盐不会对污泥生长产生明显抑制,而废水生化性较差,碳源严重不足才是微生物生长受到抑制的主要原因;园区生化段污泥镜检结果表明其已转化为无机污泥,基本无生化功能,除磷药剂的添加也对生化系统造成了一定的影响。研究结果对于硫酸盐含量较高废水的生化系统启动过程具有较好的理论指导及借鉴意义。To solve the problem of biochemical start-up of high-concentration sulfate wastewater,this paper designs different groups of sludge domestication experiments to compare the domestication effects of ordinary sludge and high-efficiency salt-tolerant bacteria,and focus on the impact of sulfate on the growth of sludge in the biochemical system.Experimental results showed that high-concentration sulfate(SO_(4)^(2-) about 7500 mg/L)would not have a significant impact on the growth and metabolism of microorganisms.Microorganisms can grow and metabolize under aerobic and anaerobic conditions,and the metabolic rate of microorganisms under aerobic conditions is superior to the sulfate reduction metabolism rate under anaerobic conditions;compared with ordinary activated sludge,Me salt-tolerant bacteria agent had no obvious advantages in the degradation rate of COD under the condition of higher sulfate concentration;The high-efficiency growth and metabolism of microorganisms in the sludge inoculation group indicates that the sulfate in the wastewater would not significantly inhibit the growth of sludge,and the wastewater has poor biochemical properties and serious shortage of carbon sources are the main reasons for the inhibition of microbial growth;The results of the microscopic examination of the sludge showed that it had been converted into inorganic sludge and had basically no biochemical function.The addition of phosphorus removal agents also had a certain impact on the biochemical system.This study has good theoretical guidance and reference significance for the start-up process of the biochemical system of wastewater with high sulfate content.

关 键 词：硫酸盐 活性污泥 驯化 碳源 可生化性 

分 类 号：X52[环境科学与工程—环境工程]