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�ؚ��b�õ��ܺļsռ��ˮ̎��S��ܺĵ�30%~70%,��ù�(ji��)�ܵ��ˮ̎��¼��g(sh��),��ɜp��̼�ŷţ��߬F(xi��n)�ЏUˮ̎��̵Ľ�(j��ng)��(j��)��,��

��늻��W(xu��)ϵ�y(t��ng)(BES)��һ�N��(j��ng)��(j��)�ĺͭh(hu��n)��Ѻõ�늻��W(xu��)��(qi��ng)��ЙC(j��)��Ⱦ��ｵ��ďUˮ̎��¼��g(sh��),��һ�N�ɳ��m(x��)��“�Gɫ”�ķ��ˮ��ЙC(j��)��Ľ��,��BES�Ĺ��ԭ��ꖘO�҅��h(hu��n)��,��ЙC(j��)��΢��·ֽⲢጷų��Ӻ��|(zh��)�ӣ��ͨ�^��f��w��M�ֺ�ꖘO֮�g�M(j��n)��Ч��f,��ͨ�^��·��f��ꎘO�γ��,��|(zh��)��ͨ�^�|(zh��)�ӽ��QĤ��ֱ��ͨ�^�U(ku��)ɢ��Â��f��ꎘO��(һ��)��ꎘO�õ��ӱ�߀ԭ�c�|(zh��)�ӽY(ji��)��ˮ,��о��l(f��)�F(xi��n)BES��Խ��̼?x��)仯��,��Ӻ��ЙC(j��)��Ⱦ�ͬ�r߀��^�õ�Ó��,��Uˮ�еĽ��x��Ҳ��^�õ�ȥ��Ч��,��Ŀǰ��BES��о��Ҫ��ڌ�(sh��)�(y��n)��СԇҎ(gu��)ģ,��^��Ҏ(gu��)ģ��о�߀��,��

��(sh��)�(y��n)��^һ�N��Ư��늘OBES�͂��y(t��ng)�ؚ�،��ڳ��ˮ��̎��Ч��BES�ڳ��ˮ̎��Č�(sh��)�H��(y��ng)��ṩ��(j��),��

1��(sh��)�(y��n)�b�ü��

1.1BES��(sh��)�(y��n)�b�ýY(ji��)��(g��u)

�D1BES��(sh��)�(y��n)�b��

Fig.1TheBESexperimentalequipment

��(sh��)�(y��n)��(g��u)��BES�b��w��PVC��,��ߴ��3.0×1.0×1.8m��Y(ji��)��(g��u)��D1��ʾ,��ꎘO��ǃɌӲ��P䓽z�W(w��ng),��e��s��3m2��ꖘO��ɲ��P�䓽z�q��(li��n)�M��,��ѷe�w�e�s0.6m3,��ꎘO��ꖘO�g��^��ϵĲ��P䓌�(d��o)��B��,��c(di��n)̎�ý^��ܷ⡣��ˮ��ϵČ�(d��o)��B��һ��10Ω��,��

1.2��(sh��)�(y��n)��

��(sh��)�(y��n)��ˮȡ�ԺϷ��ĳ��ˮ̎��S��ˮ��,��COD��200~500mg/L֮�g��ⰴ�B�m(x��)�M(j��n)��ˮ��ʽ�\(y��n)��,��ˮ��ˮֱ��ñ��BES��(y��ng)��,��ˮ��ͣ��r�g��18h��cԓ��ˮ̎��S�ؚ��ˮ��ͣ��r�g��ͬ,��ض��10~20��,��(sh��)�(y��n)�У�ÿ��քeȡ��ˮ��,��ؚ�س�ˮ��BES��ˮ,��y��P(gu��n)ˮ�|(zh��)ָ��(bi��o)��

2�Y(ji��)��cӑՓ

2.1BEC�a(ch��n)��r

��(sh��)�(y��n)�^��,��O(ji��n)�y10Ω��ɶ˵�늉�,��D2��

�D2BES��ݔ��늉�

Fig.2ThevoltageoftheBES

��Ҋ,��ڲ��ؚ�ėl��,��ԓBES��10Ω��ɶ��늉��106mV��\(y��n)�г��,��ϵ�y(t��ng)��늉��^С,��S��(y��ng)��\(y��n)�У��y��늉��,��30d~35d�r,��BES��늉��@��ͣ��˕rBES̎��Ч��Ҳ��,��ښ��ͻ��Ӱ��΢��Ļ��,��40d֮��ɶ�늉��(w��n)��80~100mV֮�g,��˕rBES�\(y��n)��^�鷀(w��n)��,��̎��Ч��^�á��늉�ֵ��g�ӷ�ӳBES��΢��Ժ͏Uˮ̎��̶�,��

2.2BEC�b�Ì��ˮCOD��ȥ��

��(sh��)�(y��n)�^��ÿ��O(ji��n)�yBES�M(j��n)��ˮ��CODֵ,��ˮ̎��S�ؚ�ص�̎��Ч��M(j��n)�Ќ��ȣ��Y(ji��)��D3�͈D4,��\(y��n)��ǰ��,��BES��ˮCOD��@��ؚ�س�ˮ��S��(y��ng)��\(y��n)��,��BEC�ĳ�ˮ��uڅ�ڷ�(w��n)��,��ڷ��(y��ng)��\(y��n)��30~35d�r,��⽵��@��BES�ĳ�ˮCOD�^��,��Uˮ̎��Ч��@�½�,��ˮ̎��S��ؚ��ܚ��׃��Ӱ푺�С��f��ϵ�y(t��ng)Խ��,��\(y��n)��Խ��(w��n)��,��ڷ��(y��ng)��\(y��n)�е��40d�r��BES��ˮCOD��50mg/L��,��Ը��ؚ�س�ˮ,��˕rBES��(y��ng)��\(y��n)�з�(w��n)��CODȥ��ʼs��88%,��ͬ�l��£��ؚ�ص�ȥ��ʞ�90%~92%,��,��f��ڌ�(sh��)�(y��n)�l��£�BES��ڳ��ˮ��^�õ�̎��Ч��,��

�D3BES��ؚ��M(j��n)��ˮCOD׃��

Fig.3CODChangesofinfluentandeffluentoftheBESandtheaerobicsystem

�D4BES��ؚ��CODȥ��׃��

Fig.4ChangesofCODremovalrateoftheBESandtheaerobicsystem

2.3pH׃��r

�D5BES��ؚ��M(j��n)��ˮpH׃��

Fig.5pHChangesofinfluentandeffluentoftheBESandtheaerobicsystem

�D5��BES��ؚ��M(j��n)��ˮpH��׃��,��Ҋ,��BES�\(y��n)��,��BES��ˮpH��@��ؚ�س�ˮ��BES��ˮpH�Ը��M(j��n)ˮ,��ؚ�س�ˮpH��M(j��n)ˮ�Ե�,��ؚ��M(j��n)��ˮpH���

2.4늌�(d��o)��(EC)׃��r

��(sh��)�(y��n)�^��늌�(d��o)�ʵ�׃��D6,��BES��ˮ��늌�(d��o)��Ը��M(j��n)ˮ,��ҳ�ˮ��늌�(d��o)��c�M(j��n)ˮ׃��څ�ݻ��ͬ��ؚ�س�ˮ��늌�(d��o)��@С��M(j��n)ˮ,��

�D6BES��ؚ��M(j��n)��ˮ늌�(d��o)��S�r�g׃��

Fig.6ECChangesofinfluentandeffluentoftheBESandtheaerobicsystem

2.5��߀ԭ�λ(ORP)׃��r

��(sh��)�(y��n)�^��߀ԭ�λ��׃��D7,��BES��ˮ��߀ԭ�λ��@��M(j��n)ˮ��ؚ�س�ˮ��߀ԭ�λ��@��M(j��n)ˮ,��ҳ�ˮ��߀ԭ�λ�^�鷀(w��n)��,��

�D7BES��ؚ��M(j��n)��ˮ��߀ԭ�λ�S�r�g׃��

Fig.7ORPChangesofinfluentandeffluentoftheBESandtheaerobicsystem

3�Y(ji��)Փ

(1)��Ư��늘O��늻��W(xu��)ϵ�y(t��ng)̎��ˮ�ǿ��еģ��ˮˮ�|(zh��)��ҷ�(w��n)��,��@�Ľ��ܺ�,��ڌ�(sh��)�(y��n)�l��£��ˮCOD��(w��n)��35~70mg/L,��COD��ȥ��Ч��_(d��)��88%,��ӽ��ͬˮ��ͣ��r�g�µĳ��ˮ̎��S�ؚ��,��

(2)��(sh��)�(y��n)�l��£�ԓBES��10Ω��ɶ�늉��_(d��)106mV,��늉��COD��ȥ��Ч�ʳ��P(gu��n)�P(gu��n)ϵ,��

(3)BES��ˮ��pH��늌�(d��o)�ʺ��߀ԭ�λ��(w��n)��,��Ҹ��ؚ�س�ˮ,��

����D(zhu��n)�d��ǳ��ڂ��f��Ϣ֮Ŀ�ġ��Ё�Դ��(bi��o)ע�e�`��ַ��ĺϷ��(qu��n)��,��Ո��߳֙�(qu��n)��C��c��W(w��ng)(li��n)ϵ,��҂��r��h��,��x�x,��