摘要
对现有污水处理厂进行工艺优化,提出新的脱氮组合工艺——水解酸化-AMBBR-好氧工艺,并研究该工艺的启动过程。采用单池驯化培养的方式,同时启动了水解酸化池、缺氧移动床生物膜反应器（AMBBR）和好氧池,重点就水解酸化池和AMBBR的启动进行详细介绍。结果表明,水解酸化反应器采用投泥启动,小流量进水,逐渐增大流量的方式,可以在15 d之内完成启动,出水清澈;AMBBR宜采用好氧启动,微氧运行的方式,挂膜时间短,膜的更新速度快;组合工艺串联后,在较短的时间内,COD的去除率可达到80%,NH3-N的去除率达到70%以上;启动污泥和污水回流后,填料很快适应水质水量变化,并在3-4 d内重新挂膜,出水TN平均浓度低于20 mg/L;运行的3周内,系统没有外排污泥。
A new combined nitrogen removal process hydrolysis acidification-AMBBR-aerobic process was proposed to optimize the presented wastewater treatment process,and the start-up of the combined reactor was researched. Domestication by signal reactor was adopted,three reactors of hydrolysis-acidification reactor,AMB- BR and oxidation reactor were set-up at the same time,and the emphasis was on the first two reactors. Results show that,the hydrolysis-acidification reactor was started within 15 days by adding digested dry sludge, and increasing the flow slowly from small amount influent, at the end of the 15 days,the effluent of the hydrolysis-acidification reactor is very clear. The AMBBR is better to started-up by aerobic means and operated under anoxic condition. In this way,the time for biofilm culture is short and the renewal process is very fast. After the combined process was operated, the COD and ammonia removal efficiency reached 80% and 70% in a very short time, respectively. The biofilm renewed in 3 to 4 days after the nitrification effuent and the residual sludge were recycled, and the average total nitrogen in the effluent was below 20 mg/L. There was no sludge discharged from the combined process during the operation in three weeks.
出处
《环境工程学报》
CAS
CSCD
北大核心
2009年第7期1203-1208,共6页
Chinese Journal of Environmental Engineering
基金
广西环境工程与保护评价重点实验室基金资助(桂科能0704K031)
关键词
水解酸化
AMBBR
组合工艺
启动
hydrolysis-acidification
AMBBR
combined process
start-up
