2) low strength wastewater
低浓度废水
1.
Study on the operation characteristics of anaerobic baffled reactor treating low strength wastewater;
厌氧折流板反应器处理低浓度废水的运行特性研究
2.
Progress in anaerobic treatment of low strength wastewater under psychrophilic conditions;
低温厌氧处理低浓度废水研究进展
3.
The result of anaerobic baffled reactor(ABR) treating low strength wastewater on mesophilic condition indicates that on the condition of influent CODCr concentration of about 500 mg/L,HRT 3~12 h,the reactor was efficient in the removal of CODCr,viz above 84%,effluent CODCr concentration of 75 mg/L.
对厌氧折流板反应器在中温条件下处理低浓度废水的试验结果表明:在进水CODCr浓度为500mg/L、水力停留时间为3~12h时,CODCr的平均去除率可达84%,出水CODCr浓度可降至75mg/L。
3) low concentration wastewater
低浓度废水
1.
The research probes into the feasibility on low concentration wastewater treated by inner cycle of aerobe in three-phase bio-fluidized bed and the growing characteristics of biological-membrane.
本研究探讨了好氧内循环三相生物流化床处理低浓度废水的可行性和生物膜生长特性。
2.
This paper focuses on the feasibility of utilizing the photoelectric colorimetry to determine the COD_(Cr) of low concentration wastewater.
比较了回流法和分光光度法测定低浓度废水化学需氧量(CODCr)的分析结果,在保证较高的准确度和精密度的前提条件下,后者能大量减少试剂用量,缩短分析时间。
4) Low-strength wastewater
低浓度废水
1.
Study on the startup of ABR treating low-strength wastewater;
ABR处理低浓度废水的启动研究
2.
Anaerobic Baffled Reactor(ABR), which has been successfully applied in high-strength organic wastewater treatment with good progress, is a new type of high-efficiency anaerobic reactor, and its application and research in treating low-strength wastewater has also been paid more and more attention.
厌氧折流板反应器(ABR)作为一种新型高效的处理工艺,不仅在高浓度有机废水的研究和应用方面取得了较大的进展,而且在处理低浓度废水方面也越来越引起重视。
3.
The impact of hydraulic retention time(HRT) in an anaerobic baffled reactor (ABR) on its operation performance and granular sludge characteristics was investigated through both testing its operation and analyzing the particle size distribution(PSD) and fractal dimensions of these sludge granules when treating low-strength wastewater.
采用效果检测、粒度分布与分形等方法,研究了ABR处理低浓度废水时水力停留时间(HRT)对其运行状况和颗粒污泥特征的影响。
5) concentration of heavy metals
重金属浓度
1.
Having monitoring and analyzing the pH value,the concentration of heavy metals of precipitation on the Jiaozuo City,and then analyze the relationship between the changes in law of the concentration of heavy metals and the pH value,temperature,rainfall,sampling weather conditions,and thus to Speculate the current speculation air Pollution in Jiaozuo City.
对焦作市的降水的pH值、重金属浓度进行监测和分析,并分析其中的重金属浓度变化规律以及与pH值、温度、降雨量、其采样间气象条件的关系,从而推测出当前焦作市的空气污染状况。
6) heavy metals wastewater
重金属废水
1.
Application of clay mineral materials to the treatment of heavy metals wastewater;
黏土矿物材料在重金属废水处理中的应用
2.
The adsorption of permutite was used to remove Cd(NH3)42+ in the heavy metals wastewater.
利用沸石吸附去除重金属废水中以络离子形态存在的镉,实验考察了沸石用量、振荡时间、pH和温度对吸附效果的影响,探讨了吸附作用机理。
3.
The adsorption of permutite was used to remove Cu(HN 3) 2+ 4 in the heavy metals wastewater.
利用沸石吸附法去除重金属废水中以络离子形态存在的铜。
补充资料:含重金属废水处理设计
含重金属废水处理设计
design of heavy metal ions- containing waste water treatment
han zhongjinshu fejshu}ehu]j shejj含重金属废水处理设计(design of heavymetals ions一eontaining waste watertreatment)对有色金属冶炼厂排出的含重金属废水,经处理或回收其中有价值金属,使其有害物质含量符合排放标准或满足回收利用的设施设计。重金属废水主要含有汞、铬、福、镍、砷、铅、铜、锌、锰金属离子。重金属能在土壤中积累,不能被破坏或降解,只能位置转移,改变形态,所以是一种永久性的污染物,必须进行处理。在中国《污水综合排放标准》中,将汞、福、铬、砷、铅、镍列为第一类污染物,它们能在环境或动植物体内蓄积,对人体健康产生有害的影响。第一类污染物最高允许排放浓度(mg/L)为: 总汞。05 总锡0 .1 总铭1 .5六价铬。.5氢氧化物沉淀是向重金属废水中一次投加中和剂,咨 总砷。.5种重金属以金属氢氧化物沉淀的形式同时析出,此种 总铅1.。沉淀物中含有多种金属和沉渣,影响重金属的回收。分 总镍1.。二,,,二~~~。~~二~~~,.J,一_,,_‘一~ 笠少.__、兰丫.___._‘_‘…__.___段氢氧化物沉淀是根据金属氢氧化物沉淀的特性,分 铜、锌、锰被列为第二类污染物,其最高允许排放。,,‘二。、翔,,泰石_,丁奋,哀孚.占几瓦工二公‘二丫.,二~_护三~‘~以‘”’J下一~’,不叨’片从’阅夕‘“「汁肤别投加中和剂控制pH值,在不同的池中沉淀,有利于浓度如表。人。~.‘一~乙认_二二_二几,_二二二二二二丫二.’二二二~‘州认’金属回收。氢氧化物沉淀法具有流程简单、操作管理方 __‘.,__二____‘..…__.便,处理成本较低的特点,但沉渣量大且含水率高,脱一止竺兰壁塑丝卫塑竺竺兰翌竺一-水较困难。------------一”‘’一 !一级你惬}二级标准}__离子交换法多用于含铬、镍等有价值金属回收 ‘”米伪{新:扩、{二,1新、扩、1二、!标准(见含格含机皮水处理设计),含镍废水通过阳离子交一-一月卜兰兰习一一一习一兰里习一一一川一—换器,镍离子为离子交换树脂所吸附,经硫酸再生,再 理!”“)”‘“{“”}‘.”]‘’U生液含硫酸镍,可回用于镍的电解工艺。 房}。。}二。}三。}二二}二一二处理设施及设备一般由废水调节池、药剂制备一间、水泵站、废水嫂林渺耻衅骊。 废水来源与特性重金属废水主废水调节池将不均衡的废水,排水量得到调节,要来源于烟气净化洗涤、湿法除尘、地中面冲洗排水、酸性废水、冲渣水、湿法和l冶炼车间排水和电镀车间生产排水。进水一一声习一一,【一,,门_一苗孚呈声王玄褚瘫苏晶未,d,巍竺士塑叶诬夔于趣巫州装黯随砰瑙;盆中重金属的种类、含量及其存在形态【燮燮到也不相同,变化较大。
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参考词条