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                ????????? > ????? >> ??????? > ????

                ?????t??????????????о????

                ???????2010-12-24 14:21 ??????й??????? ????: ??Ρ???????????? ?????94285 ????????0??

                 

                ????: ?????????????t?????е??γ????????????????е????????????????? ??????t??????????????????????е??????,?÷????????????????????????С,? ?????????????t,????????????????? ????

                ?????: ???????t; ?????????; ??????????; ????????? 

                ?????t(MgNH4 PO4 ·6H2O)???????,? ??????struvite (magnesium ammonium phosphate) ,?? ??MAP??????????е??????t(MAP)??????? Mg2 +?????????????κ??????????з?????? ??????????t????,??????????е??????κ? ??????

                ??????????????,?÷??????????49% ????????????????t?????????????????? ?????й??????,????????Ч????????,??? ???????????????????????????е???????? ???????,???????????????????????д????? ????????????????t???????????????????????

                1??????????t?γ????

                1. 1???????t????

                ?????t??????????????廯??????? pH???仯???????????к?????,??pH??? ?仯,??е?NH4+  ??Mg2 +??PO4- 3 ??????仯,?? ?????????????????????????t?????????? (Ksp )?,?????????????????????????????? ?????????????pH???????п????Mg??N?? ?????ε?????????,????????????????е??? ???????????????????????????,??????? ?????t????????????,????????????? ?????????????ó??????t?????????? (3. 89 ×10- 10 ??7. 08 ×10- 14 ) ??

                1. 2???????t????????

                ?????t???????????????????????????? ??????,Adnan??[ 3 ]??????????t?????????? ??????е???????,?????????t????????и? ???????????????????????????t????? ??, Stumm????????????????( PS )?????,??? ???????????????????(?????????pH???)??? ?????????????????t??PS ????????: 

                1. 3???????t???γ?

                PSeq??pH??????:????pH???????,??? PO3 - 4 ????,??Mg2 +??NH+ 4 ?????????,????? t??PSeq??????,??PS > PSeq???е??????t ????????,??????????????????????t ?????????????????????pH???,????????? ???t???????????????????????????????? ???????t??????????????t????????β ( degree of supersaturation)????????:

                ?????β??????????,??β?????????? ??????????????????,????г?????? ???????t???,??Щ??????????????,???? ??????????????,?????????????Ч????? ????????????,?????????t???????? ?????Adnan??[ 3 ]????????????????1??5? ?????????????????,?????ε???????????? ?????t?????????á?Hirasawa????,?? ???????С???????????????????????????? ??????????????????????????γ????????? ??????????????Ρ??????t??????????? ??,??????????д??????????????????????, ??????????????????:?????t?????????? ??????????????????????仯??????? ??

                2???????????е????

                2. 1??t?????

                ????????????????????????????,? ????????????д?????t???????????е?t ?β????,?????????????t?Ρ????????????? ?λ????????,??????ú?????????t??? ???????ü????????Tunay??[ 5 ]??MgCl2 ??? ???д????????????????????t??????????? С???????С????н??????????????á? ?????????????????????????????t??,????? ?е?t?????????????????????????t?????

                2. 2??????????????

                ???????????????е?????????????????? ?л????????????,?Щ???????????????????? ???????????и????????,?????????? ?е?t????,????????????????е??????????? ?Ρ????????κ??л??????????????С?????? ??????????????????,???????γ????????? ???????, Jaffer??[ 6 ]?Slough????????????? ????????е???????????t??????????????,? ???????????????????????????????????? ???????????д????????,?????????????? ?????????t??????

                2. 3???????t?????????

                ?????t(MAP)??????????????????? ????к??????Ч??,??÷???м???t?κ??? ???ο???????????е??????Zdybiewska????? ??pH?8??10????????????????????? ?????????????????????,????1 ?? ??1??MAP????????????? ??

                Ohlinger??Jaffer?????????????? ?????( > 80% ) ,????????pH??8. 2??9??E2 lisabeth????????????????????????61 mg/L ?? ???,????NaOH????pH??8. 5?????????? ??94%??Abe???????????????162 mg/L?? ????,?????pH?????8. 52???????????? ??81%??Battistoni???????????????????,?? ?????????????ж????????????pH??7. 9 ????8. 3??8. 6,?????ε?????????80%??Jaffer ?????n (Mg2 ++ ) ??n ( PO4 - 3 )??1. 05??1?,????? ????е?pH ??????9. 0, ?????ε???????? 97%;??n (Mg2 + ) ??n ( PO4- 3 ) < 1. 05??????ε?? ???????72%??

                3??????

                ?????t??????????????????????,?? ??????????t????????????,???????????? ?????????????????????pH?,???????? ????????????????и???????????

                 

                ???????????????????????????????????????????????????????????棬?????????????????????????????????????????лл??

                  ??????“???”???????“?????????”

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