The two-stage and two-phase anaerobic process (TSTP) composed of hydrolytic acidification reactor,first-order and second-order external circulation anaerobic reactors (EC) was taken to treat methanol wastewater. Test ...The two-stage and two-phase anaerobic process (TSTP) composed of hydrolytic acidification reactor,first-order and second-order external circulation anaerobic reactors (EC) was taken to treat methanol wastewater. Test results show that TSTP process is quick start-up in 51 d, and the maximum VFA of hydrolytic acidification reactor effluent reaches 876 mg/L. Under the condition of volume loading of 6.56 kgCOD/m3·d, COD removal rate of the first-order EC reactor is about 85%, and under the condition of volume loading of 1.02 kgCOD/m3·d, COD removal rate of the second-order EC reactor is about 50%. When the inflow COD of TSTP process is between 7000-11000 mg/L, its effluent COD is lower than 600 mg/L. In the biological conversion process of methanol into methane,the production of acetic acids as an intermediate product can be ignored and the direct production of methane from methanol is predominant.展开更多
The process went generally through three different stages: 1. Highly planned distribution stage (Before 1978) Before1978, the Chinese auto circulation system had witnessed the changes of" unified allocation by ce...The process went generally through three different stages: 1. Highly planned distribution stage (Before 1978) Before1978, the Chinese auto circulation system had witnessed the changes of" unified allocation by central government" which played the main role while making the local government subsidiary. Yet, the whole process of auto production and circulation had been controlled by both central and local governments. Therefore, strictly speaking,展开更多
基金Sponsored by the National Hi-Tech Research and Development Program of China (Grant No.2003AA601090)Projects of Development Plan of the State Key Fundamental Research of China (Grant No.2004CB4185)
文摘The two-stage and two-phase anaerobic process (TSTP) composed of hydrolytic acidification reactor,first-order and second-order external circulation anaerobic reactors (EC) was taken to treat methanol wastewater. Test results show that TSTP process is quick start-up in 51 d, and the maximum VFA of hydrolytic acidification reactor effluent reaches 876 mg/L. Under the condition of volume loading of 6.56 kgCOD/m3·d, COD removal rate of the first-order EC reactor is about 85%, and under the condition of volume loading of 1.02 kgCOD/m3·d, COD removal rate of the second-order EC reactor is about 50%. When the inflow COD of TSTP process is between 7000-11000 mg/L, its effluent COD is lower than 600 mg/L. In the biological conversion process of methanol into methane,the production of acetic acids as an intermediate product can be ignored and the direct production of methane from methanol is predominant.
文摘The process went generally through three different stages: 1. Highly planned distribution stage (Before 1978) Before1978, the Chinese auto circulation system had witnessed the changes of" unified allocation by central government" which played the main role while making the local government subsidiary. Yet, the whole process of auto production and circulation had been controlled by both central and local governments. Therefore, strictly speaking,
