有效微生物和多功能复合微生物制剂生物强化提高化粪池粪便污泥减量效率研究

Study on septic tank nightsoil sludge reduction by bioaugmentation of EM and MCMP

为了考察有效微生物（EM）和多功能复合微生物制剂（MCMP）对化粪池粪便污泥减量的强化效能,以化粪池粪便污泥为研究对象,采用中温（35℃）厌氧消化,研究EM和MCMP不同投加量（0-1.00%）对化粪池粪便污泥厌氧消化总固体（TS）、挥发性固体（VS）和COD的减量效果,考察EM和MCMP投加量与TS、VS和COD去除率间的相关关系。结果表明,投加0.005%-0.10%的EM和MCMP均有利于化粪池粪便污泥TS、VS和COD的去除;其中以投加0.01%的EM（E2处理）和0.01%的MCMP（M2处理）对TS、VS和COD的去除效果最好。E2处理TS、VS和COD的去除率分别为32.51%、42.34%和40.91%,分别比对照（CK）高5.83%、5.29%和7.13%;M2处理TS、VS和COD的去除率分别为33.74%、46.05%和43.33%;分别比CK高7.06%、9%和9.50%。对化粪池粪便污泥厌氧消化TS、VS和COD的减量作用效果表现为：MCMP〉EM。EM和MCMP的投加量与TS、VS和COD去除率间均存在一定的负相关关系;投加EM和MCMP的各处理的TS、VS和COD去除率两两间均表现为正相关关系。

In order to investigate the effectiveness of bioaugmentation of effective microorganisms（EM） and multifunctional compound micro-organisms preparation（MCMP） on septic tank nightsoil sludge reduction,the septic tank nightsoil sludge was selected as the study object.An anaerobic digestion experiment at 35℃ was conducted to investigate the effects of the dosing quantity of EM and MCMP on the removal rate of total solid（TS）,volatile solid（VS） and COD of septic tank nightsoil sludge;meanwhile,the correlation between dosing quantity of EM and MCMP and the removal rate of TS,VS and COD was also investigated.The results indicate that the suitable dosing quantity of EM and MCMP to reduce TS,VS and COD of septic tank nightsoil sludge is 0.005%-0.10%;among them 0.01% dosing quantity of EM and MCMP（E2 treatment and M2 treatment） show the best reduction effect of TS,VS and COD.The removal rates of TS,VS and COD of E2 treatment are 32.51%,42.34% and 40.91%,respectively;and 5.83%,5.29% and 7.13% higher than CK,respectively.The removal rates of TS,VS and COD of M2 treatment are 33.74%,46.05% and 43.33%,respectively;and 7.06%,9% and 9.50% higher than CK,respectively.The effect on TS,VS and COD reduction of septic tank nightsoil sludge anaerobic digestion are followed by MCMP〉EM.The relationships between the dosing quantity of EM and MCMP and the removal rate of TS,VS and COD are negative correlated;the relationships among the removal rate of TS,VS and COD are positive correlated under different dosing quantity of EM and MCMP.