CAJ | 학술논문

介绍了一种新型废水处理工艺，用于处理GTG起爆药生产中的含镉废水。采用中和沉淀法与硫化物沉淀法相结合的方式，利用NaOH作为一次沉淀剂，与废水中的镉离子结合生成Cd(OH)2沉淀，一次处理后的废水通过孔径约为25μm的防酸碱腐蚀的滤袋与阶梯式沉降后进入第二沉淀槽，然后利用Na2 S对滤液进行二次沉淀，并在二次沉淀槽出口处设置过滤装置，从而使GTG起爆药生产中的含镉废水达到GB 8978-1996?污水综合排放标准?中关于总镉量的相关要求，满足工业废水三级排放标准。还提出了一种对一次沉渣进行回收利用的可行性方案，即通过对一次沉渣进行成分分析，并按照GTG起爆药的投料配比、化合工艺进行试验，验证了一次沉渣能够进行回收与再利用。该处理方法能够有效去除GTG起爆药废水中的重金属镉离子，同时对于一次沉渣的回收与利用也降低了GTG起爆药的生产成本，满足了工业生产与安全环保的双重要求。
개소료일충신형폐수처리공예，용우처리GTG기폭약생산중적함력폐수。채용중화침정법여류화물침정법상결합적방식，이용NaOH작위일차침정제，여폐수중적력리자결합생성Cd(OH)2침정，일차처리후적폐수통과공경약위25μm적방산감부식적려대여계제식침강후진입제이침정조，연후이용Na2 S대려액진행이차침정，병재이차침정조출구처설치과려장치，종이사GTG기폭약생산중적함력폐수체도GB 8978-1996?오수종합배방표준?중관우총력량적상관요구，만족공업폐수삼급배방표준。환제출료일충대일차침사진행회수이용적가행성방안，즉통과대일차침사진행성분분석，병안조GTG기폭약적투료배비、화합공예진행시험，험증료일차침사능구진행회수여재이용。해처리방법능구유효거제GTG기폭약폐수중적중금속력리자，동시대우일차침사적회수여이용야강저료GTG기폭약적생산성본，만족료공업생산여안전배보적쌍중요구。
A new method for wastewater treatment was introduced, which was mainly used for the treatment of wastewater containing cadmium in the production of GTG primary explosive. Neutralization precipitation method and sulfide precipitation method was combined in the new method. Sodium hydroxide,which was used as a precipitating agent, com-bined with the cadmium ions in wastewater and generated hydrogen cadmium oxide precipitation. Wastewater after primary treatment passed the antiacid,antialkali and anticorrosion filter-bags with the pore diameter of about 25μm,and entered the secondary sedimentation tank after stepwise settlement. Sodium sulfide was used to conduct a second precipitate and the filtering device was setted in the outlet of the secondary sedimentation tank. All of these made the wastewater containing cadmium in the production of GTG primary explosive reach total cadmium content requirements of GB 8978-1996 “standard of sewage comprehensive discharge” and meet the tertiary industrial wastewater discharge standard. A feasible scheme for recycling use of primary sediment was also proposed. By the composition analysis of primary sediment,charge ratio of GTG primary explosive and combined process, it indicates that primary sediment can be recycled and reused. This method can effectively remove the heavy metal cadmium in wastewater of GTG primary explosive. Based on recycling and utilization of primary sediment,it also reduces production costs of the GTG primary explosive, and meets the requirement of industrial production and safe environmental protection.