共查询到20条相似文献,搜索用时 468 毫秒
1.
3.
4.
5.
结合八钢焦化分厂酚氰废水处理工程实例,简述了生物脱氮工艺处理焦化废水的基本原理、工艺流程和检测控制装置在废水处理过程中的应用及其效果. 相似文献
6.
分析了包钢焦化厂酚氰废水处理现状及综合利用焦化废水存在问题,结合包钢废水处理的实际情况,提出了焦化废水全部综合利用的建议,为包钢焦化废水"零"排放项目立项提供依据. 相似文献
7.
8.
9.
10.
11.
叙述了焦化生产过程中由于装煤时一般采用喷氨工艺,导致废水中的NH3-N非常高,而又不进行硝化、反硝化的处理的情况,指出,为保证处理后出水水质能够达到回用于熄焦的标准,避免腐蚀接焦车,脱氮是非常必要的. 相似文献
12.
高浓度有机废水处理技术 总被引:1,自引:0,他引:1
对高浓度有机废水处理技术进展进行了述评,认为生物处理技术是高浓度有机废水处理系统中最重要的过程之一,但高浓度有机废水的治理方法,往往是两种或三种方法同时进行处理。最后,从绿色化学和技术的角度出发,认为工业生产技术的绿色化,对环境污染从源头上减少或消除起决定性作用。 相似文献
13.
我国石油和化工产业的废水排放量在全国工业各领域中居第一位,占整个工业排放废水量的20%左右。近些年,我国各地都采取了建立化学工业园区的方式,对工业废水集中处理。这种一体化水处理的方式具有许多显而易见的优势。一体化治理化工园区废水的做法符合行业的发展需要,也符合环境污染治理政策,是我国解决水资源短缺和水环境污染问题的重要措施。然而在化工园区采用一体化水处理模式的实践中,还存在和新出现了一些难点问题,需要认真研究并逐步加以解决。如投资者主体权益难以保证、风险难以控制;深度水处理技术和装备仍很缺乏;由于实施统一处理,限制了一些具有节水潜力企业自身的节水行为;难以掌握不同污水排放的规律性,水质呈现复合型污染状态;政府的鼓励政策难以发挥作用等。要解决这些问题,应建立一体化水处理逐级处理体系、分类处理体系和技术支撑体系,同时要建立与一体化水处理相适应的应急体系。 相似文献
14.
上世纪30年代,德国鲁奇公司开发出碎煤固定床加压气化技术,应用于煤气化项目,其关键设备为FBDB(固定床干底)气化炉,俗称鲁奇炉.几十年来,先后开发出四代鲁奇炉;同时,为实现气体和废水的达标排放,相继开发出煤气化的尾气处理和废水处理新技术.鲁奇FBDB煤气化技术成熟可靠,在无任何备用的情况下,单台气化炉年运转率超过93%,气化岛年运转率大于98%.由于采用碎煤进料方式,相对气流床干粉或水煤浆进料方式,备煤系统简单,投资及运行费用大为降低,同等规模下,气化岛加上配套空分的投资,约比水煤浆气化低20%.煤种适应范围广,除强黏结性焦煤外,从褐煤到无烟煤均可气化,包括水分、灰分较高的劣质煤;可副产焦油、轻质油及酚等多种高价值产品.新一代Mk+鲁奇气化炉,具有高产低耗、合成气中CH4含量高等特点,且环境友好,可以实现废水的零排放. 相似文献
15.
《International Journal of Hydrogen Energy》2020,45(3):1608-1614
In this study, the influence of alkali precipitation on the gasification of coking wastewater with KOH as catalyst at 540 °C, 25 MPa was investigated. Adding the KOH increased H2 fraction and the gas yield. The alkali is accumulated in the reactor, and the catalytic effect was further improved with reaction time prolonging. The precipitated alkali in the reactor still showed high catalytic effect on the subsequent gasification of coking wastewater without further adding the alkali. The catalytic activity was slightly reduced owning to the transformation of KOH to K2CO3 and KHCO3. A novel 4-lump kinetic model for coking wastewater in SCWG including feedstock, CH4, CO, and CO2 lumps is proposed. The kinetic parameters are estimated for each involved reaction. 相似文献
16.
Microbial electrolysis cells (MECs) have great potential as a technology for wastewater treatment in parallel to energy production. In this study we explore the feasibility of using a low-cost, membraneless MEC for domestic wastewater treatment and methane production in both batch and continuous modes. Low-strength wastewater can be successfully treated by means of an MEC, obtaining significant amounts of methane. The results also suggest that hydrogenotrophic methanogenesis reduce the incidence of homoacetogenic activity, thus improving the overall MEC performance. However, gas production rates are low and important aspects such as methane solubility in water still remain a challenge. Overall, MECs can offer competitive advantages not only for low-strength wastewater treatment but also as an aid to anaerobic methane production by improving the chemical oxygen demand (COD) removal and methane production rates. 相似文献
17.
18.
Reduction in carbon dioxide and production of methane by biological reaction in the electronics industry 总被引:1,自引:0,他引:1
Biological methane production is a more environmentally friendly technology for carbon dioxide reduction than physical and chemical methods. Carbon dioxide can be reduced biologically to methane with hydrogen as the reducing agent under anaerobic conditions. In this study, carbon dioxide discharged from the electronics industry was reduced biologically to methane using the hydrogen produced from electrochemical wastewater treatment. Electrocoagulation technology was applied to treat industrial wastewater and obtain hydrogen without oxygen production. On mixing and injecting the hydrogen and carbon dioxide that were emitted from the facility into an anaerobic reactor, the methane content that was discharged from the anaerobic reactor and the reduction rate of carbon dioxide were 92% and 98%, respectively. This technology, combined with electrocoagulation and biological reaction, reduces carbon dioxide levels and produces methane. 相似文献
19.
20.
讨论了炼厂高硫石油焦循环流化床锅炉清洁燃烧技术和我国石化系统循环流化床锅炉运行所达到的较高水平。指出该技术不仅解决了我国延迟焦化加工劣质原料时产生的大量高硫石油焦的出路,而且符合我国国民经济在新世纪的节能减排重大战略方针。 相似文献