【摘要】 针对城市污水处理厂在低碳源条件下的实际运行情况,分析了ECOSUNIDE工艺中碳源的分布及利用情况,指出水中慢速降解有机物(X S)经好氧水解产生的易降解有机物(S S)是参与反硝化过程的主要碳源。根据简化的ASM1模型,对X S水解和异养菌衰减产生的S S进行了数值计算,在BOD5=80 mg/L、NH3-N=30 mg/L、TP=4 mg/L、X S=90 mg/L的进水条件下,异养菌衰减和50%进水中的X S好氧水解产生的S S用于反硝化即可基本满足脱氮除磷所需的碳源,而其中及时利用X S水解产生的S S是反硝化的关键。更多还原

【Abstract】 For the operation of low-carbon wastewater treatment plants,the distribution and use of carbon source in ECOSUNIDE process was analyzed.The main carbon source used in denitrification is the readily biodegradable substrate(S S) from the slowly biodegradable substrate(X S) hydrolysis.Based on the ASM1 model,the amount of S S from hydrolysis of X S and heterotrophic bacteria decay was calculated.The results showed that if the S S from hydrolysis of 50% X S and heterotrophic bacteria decay could be used in denitrification under the conditions of 80 mg/L BOD5,30 mg/L NH3-N,4 mg/L TP and 90mg/L X S,the demand for carbon source required for nitrogen and phosphorus removal could be met.The S S from hydrolysis of X S was the key for denitrification.更多还原