一种新型污水处理工艺在生活污水处理厂的应用

某公司污水处理厂拟采用"BioDopp生化反应器+曝气生物滤池+滤布滤池"的工艺,出水达到《地表水环境质量标准》(GB 3838—2002)V类限值,BioDopp工艺利用氧化沟的混合液内回流和A~2/O不同功能分区相结合的设计理念,借助CASS工艺前置选择区的模式,通过空气提推技术作为流体动力,在低能耗条件下可实现污泥在反应器内的高回流比,有着能耗低、占地少等优点,是一种具有脱氮除磷功能、实用性较强的新型污水处理工艺。     

中国恩菲子公司恩菲环保中标武陟县第三污水处理厂项目

<正>近日,北京恩菲环保股份有限公司(以下简称"恩菲环保")成功中标武陟县第三污水处理厂PPP项目。武陟县第三污水处理厂PPP项目设计规模3万t/d,近期建设规模2万t/d,污水处理采用改良型氧化沟工艺、深度处理采用高效沉淀池+转筒式精密滤池工艺;污泥处置采用污泥加钙稳定干化+外运卫生填埋工艺;处理后出水水质指标执行《GB 18918—2002城镇污水处理厂污染物排放标准》一级A标准。武陟县隶属河南省焦作市,是当地重要的交通枢纽和工业     

综合污水处理零排放工程设计与实践

某钢铁公司采取高效物化沉淀技术、MBBR生化技术、D型高效过滤技术、超滤+反渗透膜脱盐技术相结合的国内先进的污水处理及回用工艺,处理后的水质能够满足不同用户的水质需求,污水处理后全部得到循环利用,达到了三级高效率回收利用之目的,实现废水零排放目标。     

改良型Carrousel氧化沟工艺脱氮除磷影响因素分析

Carrousel氧化沟是我国污水处理系统中常用的一种污水处理工艺.文章结合改良型微孔Carrousel氧化沟工艺分析了溶解氧、碳源、污泥龄、温度、pH和污泥回流比对其脱氮除磷效果影响,并对该工艺用于污水处理的前景及存在的问题进行评述.     

水质改性工艺在盘四注水站的应用

本文介绍了一项污水处理工艺-水质改性工艺,说明了这一工艺的原理,并具体讲述了这一工艺在-污水处理站的具体运行情况,应用的效果分析.这一污水处理工艺,大大提高了回注水的水质,保护了注水管网,保护了地层油气藏,其间接的经济效益不可估量.     

焦化污水处理工艺中存在的问题及相应的治理措施

目前焦化污水处理工艺中存在清、污分流不好，COD不能达标，NH3－N远远超标等问题，通过某25万t／a焦化厂污水处理情况的实地调查，并结合焦化污水处理中的问题，进行了针对性的研究，提出焦化行业污水处理工艺的改进措施。     

不锈钢分公司污水处理工艺及运行管理

介绍了上海宝钢不锈钢分公司污水处理工艺,分析了污水处理关键技术中高密度沉淀池和生物滤池的应用情况,并针对使用中出现的问题,提出在运行管理方面的对策.     

取向硅钢CGG-1冶炼工艺优化

采用"EBT+LF+中间包+VOD+LF"工艺成功试制了取向硅钢CGG-1。通过对试制情况的分析和总结,对原冶炼工艺进行了优化。优化后的工艺为"EBT+VOD+LF",通过对比,采用优化工艺冶炼取向硅钢,生产效率高,冶炼消耗低,冶金质量稳定,效益显著。     

某危废处置中心危废焚烧工艺分析及应用

以江西省吉安市某危废处置中心工程为例,阐述分析危险废物焚烧系统的工作原理和特性。该项目采用"斗提+油压推料+回转窑+二燃室+余热锅炉+急冷塔+干法脱酸塔+布袋除尘器+二级湿式洗涤塔+湿式电除尘+引风机+烟囱"的工艺。采用本工艺后,可实现危险废物的无害化、减容、减量,该工艺在国内外已广泛应用。     

GH3128 合金"VIM + ESR”和“NVIM + ESR”冶炼过程中的脱气行为及夹杂物研究

利用氧氮分析仪对"真空感应熔炼+电渣重熔"（VIM+ESR）和"非真空感应熔炼+电渣重熔"（NVIM+ESR）两种冶炼工艺下冶炼GH3128合金中的氧含量、氮含量进行检测,并进行了脱氧、脱氮的热力学计算;利用ASPEX扫描电镜分析了两种冶炼工艺下GH3128合金中夹杂物的成分、尺寸分布以及数量。结果表明,采用"VIM+ESR"工艺更能有效的去除合金液中的氮,夹杂物类型主要是Al-Ti-O型复合氧化物夹杂,还有少部分的Al₂O₃、TiO_x氧化物夹杂,而采用"NVIM+ESR"的双联工艺,合金中产生的夹杂除氧化物夹杂类,还有硫化物、氮化物夹杂;且采用真空冶炼工艺更能有效降低夹杂物数量,并细化夹杂物。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.