CAJ | 학술논문

为开发城市黑臭河道的有效治理方法,利用人工模拟河道就河道底泥对上覆水体的二次污染、底泥污染生物修复对其氮磷营养盐释放及河道水体污染生物修复的影响进行了研究,并对实验结果进行了工程现场应证.研究结果表明:河道污染底泥生物修复状况对上覆水体水质产生大的影响,在底泥不加修复时,底泥污染物释放使水体COD、TP、NH3-N浓度分别达到30～35 mg/L、0.4～0.5 mg/L和3.0 mg/L,底泥修复后分别为15～20 mr/L、0.1 mg/L和2.5 mr/L;底泥G值(Y)与底泥氮、磷污染物释放量(x)呈负相关关系,关系式分别为:Y=0.5124x-0.1394(R2=0.9222),Y=0.17772x-0.4781(R2=0.8701);结合底泥的生物修复,采用曝气增氧-投加生物制剂措施对水体进行生物修复时COD、NH3-N和PO34-的去除率分别提高13,6%、25.O%和15.7%;对古廖涌的现场治理工程表明,在未对河道底泥进行生物修复的情况下,经过氧化塘预处理.河道水体增氧-水体原位强化生物修复等措施的治理,河道中、下游水体又逐渐恢复黑臭,在对河道底泥进行修复后,河道污染水体水质得到显著的改善和提高.
위개발성시흑취하도적유효치리방법,이용인공모의하도취하도저니대상복수체적이차오염、저니오염생물수복대기담린영양염석방급하도수체오염생물수복적영향진행료연구,병대실험결과진행료공정현장응증.연구결과표명:하도오염저니생물수복상황대상복수체수질산생대적영향,재저니불가수복시,저니오염물석방사수체COD、TP、NH3-N농도분별체도30～35 mg/L、0.4～0.5 mg/L화3.0 mg/L,저니수복후분별위15～20 mr/L、0.1 mg/L화2.5 mr/L;저니G치(Y)여저니담、린오염물석방량(x)정부상관관계,관계식분별위:Y=0.5124x-0.1394(R2=0.9222),Y=0.17772x-0.4781(R2=0.8701);결합저니적생물수복,채용폭기증양-투가생물제제조시대수체진행생물수복시COD、NH3-N화PO34-적거제솔분별제고13,6%、25.O%화15.7%;대고료용적현장치리공정표명,재미대하도저니진행생물수복적정황하,경과양화당예처리.하도수체증양-수체원위강화생물수복등조시적치리,하도중、하유수체우축점회복흑취,재대하도저니진행수복후,하도오염수체수질득도현저적개선화제고.
In order to find out the effectively treatment technologies of polluted urban fiver.the effects of polluted sediments on the quality of river water,and polluted sediments bioremediation on its release of nutrition and on the bioremediation of polluted urban,river water were studied by the use of the simulated river,and research results were proved in the pilot plants.The results showed that the polluted sediments could affect the quality of upper water significantly.The concentration of COD,NH3-N and TP in the river water would reach 30～35 mg/L,0.4～0.5 mg/L and 3.0 mg/L when the polluted sediments were not treated,but only 15～20 mg/L.0.1 mg/L and 2.5 mg/L when the polluted sediments were treated.There was a negative correlation between G index(Y)and the quantity of nitrogen or phosphorus(x)released from sediments:Y=0.5124x-0.1394(R2=0.9222)and Y=0.17772x-0.4781(R2=0.8701).When the polluted sediments was treated effectively,the remoral rates of COD,NHl-N and PO34- of river water bioremediation could be improved 13.6%,25.0% and 15.7%,respectively.In the operation of Guliao River bioremediation project,the river water could be purified significantly when polluted sediments were treated together with the river water treatment technologies such as oxidation pond,oxygenation and in situ bioremediation,but the downstream river water would maintain poor quality water when the polluted sediments were not treated.