CAJ | 학술논문

为了解决一步铅炼生产过程中排放的具有色度大,酸度高,含砷等有害物质的污酸废水问题,在原工艺的基础上加以改进,设计了一套新的处理工艺,即硫化沉淀-强化吸附协同处理方法.分别在硫化反应阶段、一段生物反应和二段生物反应阶段加入定量的絮凝剂PMA和聚合硫酸铁,发现改进后的工艺大大的减少了硫化钠的用量,提高了除砷的效率,使排放水中的含砷量小于0.5 mg/L ,同时重金属离子和pH值都达到国家排放标准,并降低了生产成本,为强酸废水、砷污染的控制和治理、提供一条经济可行的新途径.
위료해결일보연련생산과정중배방적구유색도대,산도고,함신등유해물질적오산폐수문제,재원공예적기출상가이개진,설계료일투신적처리공예,즉류화침정-강화흡부협동처리방법.분별재류화반응계단、일단생물반응화이단생물반응계단가입정량적서응제PMA화취합류산철,발현개진후적공예대대적감소료류화납적용량,제고료제신적효솔,사배방수중적함신량소우0.5 mg/L ,동시중금속리자화pH치도체도국가배방표준,병강저료생산성본,위강산폐수、신오염적공제화치리、제공일조경제가행적신도경.
@@@@In order to solve the problems of the waste acid wastewater generated in one step refining of lead as high chroma ,high acidity and too much harmful substances as arsenic ,a new treatment was divised from the orig-inal process .It was named the Co - processing method of the sulfid precipitation and strengthened adsorption . Fixed amount of flocculant PMA and poly ferric sulfate were added to the vulcanization reaction stage ,period bio-reactor and sec bioreactor stage ,respectively .It was found that the improved process could reduce the amount of the sodium sulfide greatly ,increase the efficiency of arsenic removal ,achieve the purpose of the amount of arsenic less than 0 .5 mg/L in the discharge water .At the same time ,heavy metal ions and the values of the pH were in line with the national emission standards .The costs were cut down .Thus ,an economical and feasible way was provided for the control and governance of the strong acid waste water and arsenic pollution .