填加聚氨酯載體的SBBR工藝反硝化除磷脫氮試驗研究.pdf

1、沈陽建筑大學碩士學位論文填加聚氨酯載體的SBBR工藝反硝化除磷脫氮試驗研究姓名：郝瀅申請學位級別：碩士專業(yè)：市政工程指導(dǎo)教師：李亞峰2011-03碩士研究生學位論文 Abstract III Abstract Recently, nitrogen and phosphorus removal is a hot spot in the wastewater treatment field at home an

2、d abroad. New technologies were put forward to emerge in endlessly application with techniques of shortcut nitrification and denitrification, simultaneous nitrification and denitrification, phosphorus bacte

3、ria uptake phosphorus. While, there were few processes can achieve to remove the nitrogen and phosphorus in the same reactor. In order to solve the biological treatment process contradictions b

4、etween the denitrification and phosphorus removal, the study combined the denitrifying dephosphatation technology to deal with the nitrogen and phosphorus removal in the SBBR. This study used simu

5、lation sewage as the research object and polyurethane as the carriers, through two kinds of operation modes, the experiment studied the denitrifying dephosphatation in the SBBR, even focused on

6、 the phosphorus removal. During three months, the system achieved to cultivate the denitrifying phosphorus bacteria from the macroscopy under the anaerobic/anoxic(An/A) conditions. TP average remova

7、l rate was 81.32% in the end of domestication. And the experiment also got the operation cycle under An/A conditions: anaerobic stirring (including water time) (120min) -anoxic (240min) -precipi

8、tation (30min) –drainage(5min) -standby (85min). The experiment studied the influence factors of denitrifying dephosphatation under An/A conditions, and the results showed that: When COD concentratio

9、n was 150mg/L(NaAc/propionic acid=2), TP concentrations were below 5.44mg/L, pH was 7~7.5 in the influent, temperature was 25 , nitrate concentration was about 65mg/L or ℃nitrite concentration wa

10、s about 20mg/L in the beginning of the anoxic influent, the average removal rates of COD, TP and TN pollutants in the SBBR system were respectively 88.14%, 94.59% and 64.40%, the effluents a

11、ll met the A standards. ⅠDuring one month, the system achieved to cultivate the phosphorus bacteria from the macroscopy under the anaerobic/aerobic/anoxic(A/O/A)(adding the carbon source in the beginning

12、of the aerobic condition) conditions. TP average removal rate was 81.36% in the end of domestication. And the experiment also got the optimal operation cycle under A/O/A (adding the carbon sou

13、rce in the beginning of the aerobic condition) conditions: anaerobic stirring (including water time) (90min) –aerobic(90min) -anoxic(120min) -precipitation(30min) –drainage(10min) -standby(140min). The

14、 experiment studied the influence factors of denitrifying dephosphatation under A/O/A(adding the carbon source in the beginning of the aerobic condition) conditions, and the results showed that:

15、When COD concentrations were 102.35~300mg/L in the influent, TP concentrations were 3.65~12.22mg/L, ammonium concentration was about 30mg/L, the COD concentration was about 110mg/L in the beginning