CAJ | 학술논문

分别选取MgCl2、ZnCl2、CaCl2、CoCl3、FeCl3、AlCl3等6种金属化合物合成9种不同类型层状双金属氢氧化物(LDHs)，利用其对垂直流人工湿地无烟煤基质进行 LDHs 覆膜改性；构建模拟基质试验柱，对改性前后的无烟煤基质进行模拟垂直流人工湿地净化污水试验。结果表明：相对于原始无烟煤基质，各种 LDHs 覆膜改性基质对总磷、溶解性总磷、颗粒态磷和磷酸盐的去除率均有不同程度的提高；Zn2+参与合成的改性基质对总磷、溶解性总磷、颗粒态磷和磷酸盐均有很好的去除效果，其中 ZnCo-LDHs 和 ZnAl-LDHs 改性基质对总磷和溶解性总磷的平均去除率超过95%，对磷酸盐平均去除率达到98%以上。
분별선취MgCl2、ZnCl2、CaCl2、CoCl3、FeCl3、AlCl3등6충금속화합물합성9충불동류형층상쌍금속경양화물(LDHs)，이용기대수직류인공습지무연매기질진행 LDHs 복막개성；구건모의기질시험주，대개성전후적무연매기질진행모의수직류인공습지정화오수시험。결과표명：상대우원시무연매기질，각충 LDHs 복막개성기질대총린、용해성총린、과립태린화린산염적거제솔균유불동정도적제고；Zn2+삼여합성적개성기질대총린、용해성총린、과립태린화린산염균유흔호적거제효과，기중 ZnCo-LDHs 화 ZnAl-LDHs 개성기질대총린화용해성총린적평균거제솔초과95%，대린산염평균거제솔체도98%이상。
Nine different kinds of layered double hydroxides (LDHs) were co-precipitated synthesized under alkaline conditions using MgCl2, ZnCl2, CaCl2, CoCl3, FeCl3, and AlCl3. The simulated test columns were constructed using the modified anthracite substrates in-situ coated with the different synthesized LDHs to treat the urban sewage, and the control treatment (using anthracite as the substrates) was set up at the same time. Compared with control, the removal rates of total phosphorus, total dissolved phosphorus, particulate phosphorus and phosphate in the effluent were improved at different degrees after treating with the nine modified anthracite substrates: The modified anthracite substrates with Zn2+ showed good removal efficiency to total phosphorus, total dissolved phosphorus, particulate phosphorus and phosphate. In particular, the modified anthracite substrates coated with ZnCo-LDHs and ZnAl-LDHs showed average removal rates of 95%to total phosphorus and total dissolved phosphorus, and 98%to phosphate.