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活性炭的应用领域概述Application of Activated Carbon(叁)  

2018-03-19 07:30:49|  分类: 活性炭产业 |  标签: |举报 |字号 订阅

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资料编辑:吉建斌2010年2月

1.3  groundwater treatment  地下水的处理

1.3.1  Hydrogen Sulfide Removal  硫化氢脱除

Hydrogen sulfide (H2S) is well known for its characteristic "rotten egg" odor and associated taste problems in drinking water. The activated carbon adsorption technologies available to handle hydrogen sulfide contamination.

硫化氢是众所周知的具有“臭鸡蛋”气味的物质,使饮用水产生非常糟糕的味道。活性炭可用来有效去除水中的硫化氢污染物。

1.3.2  MTBE Removal  甲基叔丁基醚的脱除

The Clean Air Act Amendments of 1990 brought methyl tertiary-butyl ether (MTBE) into our gas tanks to help reduce smog in our air. As a result of spills and refilling at pumping stations and leaky underground storage tanks, an increase in MTBE contamination of surface water sources and groundwater has been noted. MTBE is considered a potential carcinogen and has been regulated by the EPA for clean-up of contaminated water. MTBE removal from drinking water poses a difficult challenge, but some revolutionary activated carbon products has been developed for removal of contaminants such as MTBE.

1990年颁布的(美国)联邦清洁空气法案修正案将MTBE列入气相污染物排放控制范畴,以削减空气中光化学烟雾的含量水平。在向地下贮存仓中泵入MTBE过程中会不可避免地在泵站及贮仓环节发生不同程度的泄漏,由此引发的MTBE对地表水源和地下水的污染问题已引起关注。MTBE被认为是一种潜在的致癌物质,已被列入(美国)环境保护局水污染物管理名单。

从饮用水中去除MTBE困难极大,但已开发了一些专用型活性炭产品并在此领域得到了应用。

1.3.3  NDMA Destruction  亚硝基二甲胺的销毁处理

It is now believed that NDMA (N-nitrosodimethylamine), found in rocket fuels, is also produced in wastewater treatment plants. A known carcinogen, it presents a public health problem when even trace amounts are present in drinking water. The special activated carbon products and facilities packed these activated carbons can be used to remove-off and destruct NDMA from drinding water.

经确认,以前曾在火箭燃料中发现的亚硝基二甲胺(NDMA)在污水处理厂也有产生。做为已知的一种致癌物,即使在饮用水中仅有痕量存在也会引起公共健康问题。特制的活性炭产品及装填有这种活性炭吸附剂的装置能脱去并销毁饮用水中的NDMA物质。

1.3.4  Perchlorate Removal/Destruction高氯酸盐的脱除/销毁

Medical studies have shown that when ingested perchlorate - a key component of explosives, fireworks, matches, and rocket fuels - interferes with normal functioning of the thyroid gland. The compound is stable in groundwater, and is present in a significant number of water sources. The special activated carbon products and facilities packed these activated carbons have developed for perchlorate removal and destruction.

医学研究表明,摄入高氯酸盐(一种用于炸药、烟花爆竹、火柴及火箭推进燃料的关键组分)会阻碍甲状腺的正常机能。这种化合物可稳定地保持在地下水中,同时也被发现存在于各类水源体。

特制的活性炭产品及装填有这种活性炭吸附剂的装置已成功开发并用来脱除和销毁水中的高氯酸盐。

1.3.5  VOC / THM / Pesticide / Organic Removal可挥发性有机物/三卤甲烷/杀虫剂/有机物脱除

Many drinking water sources require removal of organic compounds for health or aesthetic reasons. The special activated carbon products have been used for years as a cost-effective and reliable solution to VOC/THM/Pesticide/Organic removal.

出于健康或外观方面的原因,要求将水源中的有机化合物尽可能多地被脱除掉。一些特制的活性炭产品做为低成本的、可靠的脱除水中可挥发性有机物、三卤甲烷、杀虫剂和其它有机物的方法,已应用了许多年。

1.4 Municipal and Industrial Wastewater Treatment

生活及工业污水处理

1.4.1  Activated Sludge Enhancement  活性污泥的强化

Powdered activated carbon is sometimes used by industrial and municipal wastewater treatment facilities to buffer the biological process, and to allow the facility to continuously meet discharge permit requirements. Powdered activated carbons are ideally suited for activated sludge enhancement.

粉状活性炭有时被生活及工业污水处理厂用作生物处理工序的缓冲剂(当污染物浓度突然上升时,使用粉状活性炭先将正常生物负荷不能处理完成的过量污染物吸附,当污染负荷正常时再缓释到液相由生物处理掉——译者注),使处理厂排放的水质能连续地符合法规限值要求。粉状活性炭是较好的活性污泥强化剂。

1.4.2  Dissolved Organic Removal  可溶解有机物(DOC)脱除

Many industries are faced with the need to remove dissolved organics from various wastewater effluents. Although numerous technologies are used for removing these common contaminants, activated carbon has broad applicability to remove dissolved organics below required limits.

许多产业都被要求对各种排放的工业废水进行脱除DOCs处理。尽管已有很多种技术用来处理这些具共性的污染物,但活性炭因其对DOCs具有的广泛适用性而仍然是保证DOCs达标排放的有效方法。

 

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