铬渣堆场,Chromium-containing slag heap
1)Chromium-containing slag heap铬渣堆场
1.Chromium-containing slag heap sites are concerned as an important treatment object and the key technologies for remediating the polluted soils are urgently required in our country.铬渣堆场已经列为我国土壤污染重点治理对象。
英文短句/例句

1.Characteristics of Chromium Pollution at Chromium-Containing Slag Site and Chromium (VI) Bioremediation in the Contaminated Soil铬渣堆场铬污染特征及其铬污染土壤微生物修复研究
2.Technology and application of permeation-proof underground concrete wall for preventing Cr~(6+) slag pollution铬渣堆场地下混凝土防渗墙技术及应用
3.Environmental Behavior of Chrome in Soils Around Residue Piling Yard in Qinghai Haibei Chemical Plant;青海海北化工厂铬渣堆积场土壤中铬的环境化学行为研究
4.Toxicity of metal chromium to microorganism activities in soil around chromium-containing slag heap铬渣堆放场中金属铬对周边土壤微生物毒性效应
5.Cr distribution and speciation in soil at Xinchengzi chromic residue piled site of Shenyang,Liaoning province沈阳市新城子铬渣堆存区土壤铬污染分布及形态研究
6.Study on Pollution Distribution Characteristics of Chromic Waste Coverage Area in Shenyang Xinchengzi沈阳市新城子铬渣堆存区土壤铬污染分布及形态分析
7.Study on pollution characteristics of contaminated sites with chrome and discussion on common remediation technologies铬渣污染场地污染状况研究与修复技术分析
8.Study on Pollution Situation at Typical Chrome Residue Contaminated Sites and Corresponding Integrated Remediation Plan典型铬渣污染场地的污染状况与综合整治对策
9.Removing Ferric Compound from Chromium and Chromate Residue for Producing Chrome Tanning Agent铬酸铬渣生产铬鞣剂过程中除铁研究
10.The conclusion is that alkali waste after improvement may be used as a stack-yard foundation.分析得出,加固后的碱渣可以作为堆场地基来使用。
11.Status and Assessment of Heavy Metals Pollution in Paddy Soil Around the Spoil Area of Smeltery冶炼厂综合堆渣场围坝下水田重金属污染特征与评价
12.Facilities of phosphogypsum stacking yard and its safety management measures in Honglin Company红磷公司磷石膏堆存渣场的设施和安全管理措施
13.RECLAMATION TREATMENT OF THE SCRAPS OF CHROME LEATHER Ⅱ. Extraction of Protein and Cr (Ⅲ) from the Scraps of Chrome Leather铬革渣资源化处理研究 Ⅱ.由铬革渣提取蛋白质和铬(Ⅲ)
14.Studies on Leaching Property of Cr(Ⅵ) in Chromium Residue and Acid-Dissolved Wet Detoxication of Chromium Residue;铬渣中铬(Ⅵ)浸出特性及酸溶湿法解毒工艺研究
15.Feasible Analysis of Producing Sodium Dichromate from Used Chromic Residue Phosphate;利用磷酸铬渣生产重铬酸钠的可行性分析
16.A Research about the Extraction Cr (Ⅵ) in Chrome Slag and Recovery of Yellow Chrome;铬渣中六价铬的提取与铬黄颜料的资源化技术研究
17.Chromium residue was treated by solidification process with cement.采用水泥固化的方法对铬渣进行处理。
18.Study on Detoxification Technics and Kinetics of Chromium Slag by Microorganisms;铬渣生物解毒工艺及解毒动力学研究
相关短句/例句

residue piling yard铬渣堆积场
3)chromium slag heap铬渣堆
4)waste residue disposal sites废渣堆场
1.In karst areas of Guizhou,improperly located waste residue disposal sites and ineffective leakproof measurements lead to karst seepage.在贵州岩溶地区,由于废渣堆场选址和防渗处理措施不当,产生岩溶渗漏,使强酸碱废水污染了岩溶地下水,直接影响了岩溶水资源的开发利用。
5)Slag disposing area堆渣场
6)waste alkali-slag dump碱渣堆场
1.Ecological restoration for scientific treatment of waste alkali-slag dump was studied,with an example of the ecological restoration engineering project located on the 3rd Road in Tanggu District of Tianjin,where the waste alkali-slag dump was restored into park landscape named Ziyun Park.利用天津市塘沽区三号路碱渣堆场废弃地改造和生态恢复为紫云公园的生态恢复工程实践,对科学治理碱渣堆场废弃地的生态恢复进行了研究。
延伸阅读

铬渣  生产金属铬和铬盐过程中产生的工业废渣。中国目前有20多个省市排放铬渣。    成分  铬渣的化学成分为:二氧化硅占4~30%,三氧化二铝占5~10%,氧化钙占26~44%,氧化镁占8~36%,三氧化二铁占2~11%,六氧化二铬(Cr2O6)占0.6~0.8%和重铬酸钠(Na2Cr2O7)占1%左右等。铬渣所含主要矿物有方镁石(MgO)、硅酸钙(2CaO·SiO2)、布氏石(4CaO·Al2O3·Fe2O3)和1~10%的残余铬铁矿等。    危害  在无还原剂时,重铬酸钠的水溶液含有剧毒的六价铬离子。    铬渣露天堆放,受雨雪淋浸,所含的六价铬被溶出渗入地下水或进入河流、湖泊中,污染环境。严重污染带内水中六价铬含量可高达每升数十毫克,超过饮用水标准若干倍。六价铬、铬化合物以及铬化合物气溶胶等,能以多种形式危害人畜健康(见铬污染对健康的影响)。因此铬渣的堆存场必须采取铺地防渗和加设棚罩。    处理和利用  防止铬渣危害的办法是进行高温处理,消除其毒性。在有还原剂的酸性条件下,或在有碱金属硫化物、硫氢化物的碱性条件下,或在有硫、碳和碳化物存在的高温、缺氧条件下,六价铬都可还原为毒性较小的三价铬。铬渣的利用主要有以下几个方面:    ①制烧结砖:将铬渣干燥、粉碎,按铬渣粉40%和粘土60%的比例混合配料,制成砖坯,入窑烧制。在高温和强还原性环境中,六价铬还原为不溶于水的三氧化二铬,消除剧毒。砖材可达到建筑要求。    ②制高强铬钡砖:将5份铬渣和3份碳酸钡渣混合加水40%,在球磨机内湿磨。铬渣中的六价铬变成不溶于水的铬酸钡,一部分转化成三价铬。按3份铬钡渣浆和2份煤渣配料,经过碾压和焖料,制成砖坯。然后经升温、恒温、降温各2小时,在8个大气压力下进行压蒸养护,制成铬钡砖。铬渣中含较多氧化镁,体积会膨胀,需要存放一段时间,体积稳定后使用。    ③制铬渣铸石:以30%铬渣、25%硅酸盐和45%煤渣配料,再掺入3~5%氧化铁,经熔融浇铸,结晶退火,制得抗压强度为4800~5500千克力/厘米2的高强度、耐磨损、防腐蚀的铸石。    ④制水泥:用铬渣、石灰石、粘土等原料按普通硅酸盐水泥配料,可以烧制水泥熟料,用来制造水泥。利用碳还原后的铬渣同高炉粒化渣、转炉钢渣和硅酸盐水泥熟料,加入5%左右石膏,也可制造少熟料钢铁渣水泥。    此外,铬渣还可代替铬矿粉,作为玻璃的翠绿色着色剂。水淬铬渣还可作为水泥混合材料、矿棉原料、耐热胶凝材料、熔融水泥原料等。日本在除毒后的铬渣中,加入硫酸亚铁、氧化亚铁等还原剂,制成可塑性凝固材料或作石膏板材填充料。    铬渣具有毒性,难以运输,它的利用尚未打开局面。