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Experimental study on the treatment of rural domestic sewage by modified MBBR sludge membrane integrated process was carried out, to investigate the removal of organic matter and nitrogen and phosphorus pollutants in sewage by this process technology under different pollution loads. The results showed that the COD, NH 4 + -N, TN and TP concentration of the influent were 114-214 mg/L, 3.49-16.3 mg/L, 14.4-58.5 mg/L and 0.94-2.68 mg/L, respectively. The COD, NH4 + -N, TN and TP concentration of the effluent of the modified MBBR sludge membrane integrated process can meet the Class I level A standard of discharge standard of pollutants for municipal wastewater treatment plant of China. The comparison of process performance under different pollution load conditions showed that the process equipment had good shock load resistance ability. The effluent indicator of the process equipment basically met the Class I Level A standard. Therefore, the modified MBBR sludge membrane integrated process is used in rural domestic sewage treatment, and has a higher comprehensive removal ability of pollutants.

Experimental study on the treatment of rural domestic sewage by modified MBBR sludge and bio-membrane coupling integrated process