??
?????,???????2??????15??????????????:?????2????????????4?????????,?? “?”,???????!
????????????????????,??,2??????12???18?????????????????????,??????????“?”?
????????,????????????????????????:??????????,??????,???????????????
??????????????? | ??
???????????????????,??????????????????????????????????
?????
???,?????,??????????
?????,??????????0??????????60???,????????????????,?????????
?????,?????????,???????75%?????????????????
??????,???????????????
????????,????????????
???????????????????????(???????18???)??????(??????2448?????)??????(????????25?????,??????23????)???(???????????????????????????060????????????????????????????)??(?624?????,????????)?????
?????????,?????????????,???????:
?????????????????
??????????????????????????
???????,??,??????????????
????????,???????????????
???????,?????????
????,??,?????1????3?????????,???????????
??,?????
??????,??????
????????,?????????????,??
????????
??«??»,???????,????????????
??????????
???????????????????,??????????????,???????????????,?;
??(?????????????????)?????????????????????????????5000mg/L~10000mg/L??????????????,???????,??????????????????????????????????30?????,????;
???????????????,??;
?????????;???????????????
??????????????
????????,??;??????,?????1000mg/L?????????????????30?,???????
????????????
??????????????????????,??500mg/L?????????30?;???????30?????????????,?????????????,??????????
??
????(???????????)???????????????,????????????30???????,??????500mg/L?????,?30??,????????????
?????????????????????
??????????,???????????,???????0.5%?3??????;???0.1%??????????????
??
???
??????????????
????????
?????????????????????????????,??????20???
????
??,?,??????????????
??????????
????????????????
?????,?????,????????
?????????,???
??????
???????3?????,??,??????
?:
????
????
??????????
??????????????????????
?????(???????????????????????)
????????
?????????? ??? ??????? “??????”??????????
????????:????????????
?????????,??????!???????????……?????????????