共查询到19条相似文献,搜索用时 968 毫秒
1.
蒽醌染料废水处理技术 总被引:10,自引:0,他引:10
对蒽醌染料废水分别用混凝沉淀法,微电池法,O3法进行了预处理试验,用生物膜SBR法和活性污泥SBR法进行了生化处理试验。试验数据表明,废水经PAM混凝沉淀-铁炭微电池预处理和生物膜SBR处理后,可达标排放。 相似文献
2.
SBR活性污泥法处理乐果生产废水 总被引:15,自引:1,他引:15
乐果生产废水排放量大、浓度高、毒性强,采用SBR活性污泥法及相应的物理化学处理方法,可使处理后出水的主要指标达到GB8978-88中有机磷农药工业废水排放标准。 相似文献
3.
用高效菌种处理甲胺磷农药废水 总被引:19,自引:0,他引:19
用选育出的一种降解甲胺磷混合菌,在SBR反应器中对预处理后的甲胺磷生产废水进行生化处理。结果表明,投加高效菌种后废水的处理效率较未加高效菌种时有明显提高:进水COD为1000-1600mg/L,去除率可达84%左右,BOD去除率为90% ̄93%,甲胺磷的去除率为88%-89%,出水各项指标基本达到国家规定的有机磷农药工业废水排放标准。 相似文献
4.
有机磷农药生产废水处理方法的研究与进展(下) 总被引:1,自引:0,他引:1
四、湿式氧化法对有机磷农药生产废水的处理方法进行系统的研究后,进一步得出结论:影响废水生化处理效果的最主要的原因是废水中有机硫的含量(包括硫代磷酸酯、水解得到的巯基化合物和硫化氢中的硫),而不能简单地看作有机磷的影响。例如,敌敌畏是由敌百虫碱解而得,废水中不含硫,COD:有机磷=6—8∶1时,生化处理运转稳定,COD 去 相似文献
5.
漂染废水治理的高效新工艺 总被引:1,自引:0,他引:1
漂染厂在生产过程中由于添加了染料、双氧水、纯碱、卤化物等化工原料 ,使排放的废水不仅色度非常高 ,COD、BOD、SS等污染物指标也远远超过排放标准 ,对环境造成严重污染。同时 ,漂染废水的水质变化无常 ,水温高 ,BOD/COD值小 ,可生化性差。处理这类废水 ,国内外普遍采用生化法 ,脱色率不高 (约5 0 % ) ,而用一般的物化法 (如沉淀法和气浮法 ) ,抗冲击力差 ,使处理效果不稳定。新型高效污水净化设备———EWP高效污水净化装置的诞生 ,给洗漂行业废水的治理带来了一种新型的高效治理方法。1 EWP高效污水净化装置的工艺… 相似文献
6.
有机磷农药废水生化治理现状及进展 总被引:7,自引:3,他引:7
通过对化工部83个农药厂的调查,分析了有机磷农药废水生化治理现状、特点及问题,介绍了国内有机磷农药废水生化处理科研动态及进展情况,并为深入开展有机磷农药废水生化处理工作提出了建议。 相似文献
7.
有机磷农药生产废水处理方法的研究与进展 (上) 总被引:3,自引:0,他引:3
本文概括地介绍了近10年来国内有机磷农药废水治理方法研究工作的进展情况。介绍了磷酸酯、硫代磷酸酯与二硫代磷酸酯类农药废水在活性炭吸附、水解、氧化与生物降解中的差异。认为生化法是处理有机磷农药废水的重要方法,废水生化处理的难易,主要取决于有机碳与硫含量的比例,通过预处理除去其中的有机硫,或调整废水中有机碳硫之比例,即可改善难生物降解废水的可生化性。文中简要介绍了吸附、水解与湿式氧化法预处理的效果。 相似文献
8.
9.
10.
11.
12.
13.
The removal of nitrogen and organics from municipal landfill leachate in sequencing batch reactors (SBR) was investigated in the present study. The influence of hydraulic retention time (HRT), sludge age, manner of leachate dosage (short filling period of SBR and filling during the reaction period), and operational conditions with and without a mixing phase in the SBR cycle was explored. Four series were performed. In each series, the HRT used in the four SBRs was 12, 6, 3 and 2 days, respectively. Series 1 and 2 were characterized by a short leachate filling period, whereas series 3 and 4 were characterized by filling during the 4 h duration of the reaction in the SBR cycle. In series 1-3 SBR reactors worked with mixing and aeration phases, whereas in series 4 they worked only with an aeration phase. The effectiveness of the removal of organics increased with the extension of the HRT of leachate, particularly under operational conditions with the mixing and aeration phases in the SBR cycle. At 12 days HRT, the SBRs with the mixing and aeration phases in the cycle (series 1-3) showed better results than those with only an aeration phase (series 4). However, at 2 days HRT the operational conditions in SBR reactors with leachate filling over the reaction period (series 3 and 4) were more suitable. The highest efficiency of ammonium removal was obtained in series 1 with a short leachate filling period. In this series, at an HRT of 3-12 days, the ammonium concentration in the effluent did not exceed 1 mg NNH4 L(-1). Nitrogen removal proceeded mainly in the aeration phase as a result of ammonium losses and, to a lesser extent, dissimilative nitrate reduction over the mixing phase. The highest percentage of nitrogen removal as a result of ammonium losses was observed in series with a short filling period and long sludge age (series 1) and also in series without a mixing phase and filling over the aeration phase (series 4), whereas the highest nitrogen consumption for biomass production occurred in series 3 with filling during the reaction period and mixing phase of the cycle. 相似文献
14.
15.
16.
以自制介孔碳(MC)为吸附剂,采用吸附—电-臭氧-UV再生组合工艺将难降解有机磷三(2-羧乙基)膦(TCEP)富集后转化为磷酸盐释放,为后续磷回收提供基础。运用TEM,SEM,XRD等技术对MC进行了表征。表征结果显示,MC为碳纳米线堆积有序介孔结构,比表面积为699.76 m2/g,可为有机磷提供吸附位点。在吸附温度为298 K、TCEP初始质量浓度为100 mg/L、吸附剂投加量为1 g/L的条件下,MC对TCEP的平衡吸附量为33.72 mg/g。利用电-臭氧-UV对MC进行再生,总磷释放率可达100%,并基本矿化为磷酸盐,再生效率显著高于臭氧、臭氧-H2O2、臭氧-UV等方法。 相似文献
17.
采用UASB-SBR-絮凝工艺处理地沟油制生物柴油废水,考察了各个阶段的废水处理效果。实验结果表明:UASB稳定运行阶段进水COD约为15000mg/L时,COD去除率约为87%,出水COD在2500mg/L以下,出水挥发性脂肪酸(VFA)浓度为4~6mmol/L,最佳容积负荷为15.0kg/(m3·d);采用SBR处理UASB出水,当容积负荷为1.5kg/(m3·d)时,出水COD在200mg/L以下,COD去除率在83%以上,ρ(NH3-N)在5mg/L以下,TP约为25mg/L。向SBR出水中加入质量分数为5%的聚合氯化铝进行化学除磷,加入量为5mL/L,处理后废水TP为4~6mg/L。处理后废水的COD,ρ(NH3-N),TP均达到CJ343-2010《污水排入城市下水道水质标准》的A类要求。 相似文献
18.