造纸废水处理技术现状

由于造纸废水组分复杂、污染物浓度高、可生化性差,需要联合运用多种处理方法对其进行处理,实现废水的达标排放和降低废水处理成本。对于造纸过程,应推行清洁生产,通过源头削减和生产过程控制,减少原辅材料消耗,减少废水的产生量和排放量,降低废水中的污染物浓度,从而实现造纸废水的有效控制和处理。     

石油开采含油废水处理技术的探讨

油田开发生产过程中产生和排放的含油废水含有多种污染物，对生态环境造成严重污染。对油田含油废水应用三段法治理工艺，混凝、沉淀、过滤综合处理油田含油废水，处理后的水质达到回注水水质要求，全部回注，研究探讨了高矿化度含油废水的治理。     

不溶性淀粉黄原酸酯处理含镉废水的研究

本文以环氧氯丙烷与淀粉进行交联反应，然后再进行黄原酸化反应制得不溶性淀粉黄原酸酯（ISX），用ISX对含镉废水进行了处理试验，对其去除效果及影响因素进行了实验研究，并对其去除机理进行了初步探讨。试验结果表明，当其用量为651mg／L时，Cd^2＋离子去除率达99．30％。与其它方法相比，该法具有成本低、操作简单、无毒无害、易于分离、去除率高，回收废渣处理不会引起二次污染等优点。     

节水降耗 扭亏为盈

山西维尼纶厂曾是一个多年亏损的老大难企业。生产过程中原料消耗高,废水产生量大。废水中的污染物多达十几种,其中有机污染物服荷占全厂总负荷的80％以上。     

高盐度矿井废水\海水反渗透(RO)循环利用技术

由大连贝斯特环境工程设备有限公司开发的高盐度矿井废水\海水反渗透(RO)循环利用技术,适用于海水淡化及苦咸水淡化,锅炉给水及电子超纯水制备,饮用纯净水生产,废水处理及特种分离过程等。主要技术内容一、基本原理煤矿矿井废水属高盐度高硬度苦咸水、海水属高盐度水。其用于工业循环利用需深度处理。本工艺利用RO     

西南铝厂熔铸分厂自制油水分离器效果好

西南铝加工厂熔铸分厂二号熔铝炉在生产排除的废水中含油量高,据测定,废水中高达470毫克/升,严重超过国家规定排放标准。为了消除工业废水中的油污染、该厂熔铸分厂革新队队长陈万志和队里同志一起设计、制造、安装了一台油水分离器。这台油水分离器投入使用后,效果十分显著。废水中的含油量由过去     

预处理-UASB-接触氧化工艺处理S-诱抗素生产废水

S-诱抗素生产过程中产生的废水COD Cr浓度高、含难降解大分子物质、冲击负荷高、可生化性差,采用预处理-两级UASB-接触氧化法组合工艺处理取得了良好的效果。工程实践表明,废水中COD Cr、NH3-N的去除率分别达99.9%、99.6%,出水可稳定达到《污水综合排放标准》(GB8978-1996)一级排放标准,处理效果良好。     

论玻璃生产企业废水资源化

本文从介绍玻璃生产企业废水来源及水质入手,探讨了玻璃生产企业废水资源化的方式,阐述了玻璃生产企业废水资源化的意义。     

印染废水处理技术难点浅析

印染废水是一种有机物含量高、色度高、生化性能差的难降解有机废水,本文结合我国印染行业及其废水处理技术实际情况,综合讨论了目前印染废水处理技术中COD难以降低和高色度废水难以脱色的两大难点.     

用沼气发酵法处理造纸废水

引言目前,对造纸废水的治理措施主要有聚凝沉淀法、活性污泥法和浓缩燃烧法三种。浓缩燃烧法主要用于有机物浓度比较高的废水,但此法相当耗能。聚凝沉淀法和活性污泥法主要适合浓度低的废水,但所耗能量(占造纸能耗量之2％)和所花费用可在一年内生产210万千升的纸浆。因此单纯治理是不划算的     

制革废水污染防治措施及其有效性分析

制革废水含有高浓度有机物和大量有毒有害物质，单一的物化或生化处理技术都难以实现达标排放。本文着重介绍了制革的生产工艺、废水组成与清洁生产措施，并总结了其废水治理技术的现状与国内成功应用的实例。     

制革行业污染治理集成技术及工程应用

介绍了"五水分流"清洁生产技术、铬液灰液循环利用技术、制革高氨氮废水稳定达标排放技术、MicrowaterTM环境治理微生物技术体系、四相废水深度达标治理专利技术、膜处理回用技术、含铬污泥资源化利用技术等制革行业污染治理集成技术的概况;通过分析应用实例,指出该技术体系在达标治理的前提下,通过清洁生产、高效处理、中水回用、铬泥资源化利用等手段,可有效降低污染治理成本,应用前景广阔。     

一种阳离子型有机高分子水处理剂的研制及其性能

利用胺、甲醛、尿素、环氧氯丙烷这些便宜、易得的工业原料制得了一系列有机高分子水处理剂。研究了胺的种类、聚合单体与环氧氯丙烷的比例对产品性能的影响。利用充气浮选法对所合成的药剂进行了除油效果的评价，结果表明：当胺为二甲胺、二乙胺、甲胺，聚合单体（以胺计）与环氧氯丙烷的摩尔比为1：2时，产品的除油效果最佳。     

Biomass production for bioenergy using recycled wastewater in a natural waste treatment system

Bioenergy production from biomass is proposed as a method to solve part of the nation's energy problem. However, biomass and bioenergy production is questioned as an environment-friendly approach due to the potential increase of water pollution and the potential decrease of available water resource. A conceptual model of an integrated natural waste treatment system that produces biogas and biomass for bioenergy, treat waste and wastewater, conserve fresh water, and decrease the potential water pollution is presented. The potential biomass production from water hyacinth, duckweed, cattail, and knotgrass was investigated using recycling wastewater from an integrated natural waste treatment system from 2005 to 2008. Although the biomass production from recycling wastewater was not controlled for maximum production, this research identified the large potential impact that could be made if these systems were implemented. The overall average water hyacinth growth rate was high to 0.297 kg wet wt./m²/day during a research period of over 500 days, including both the active and non-active growing seasons. The average daily growth rates of duckweed, cattail, and knotgrass were 0.099-0.127, 0.015, and 0.018 kg wet wt./m², respectively. This research illustrated that water hyacinth was a more promising aquatic plant biomass for bioenergy production when wastewater effluent was recycled as water and nutrient sources from an integrated natural waste treatment system.     

聚丙烯工业废水排放的治理措施

在利用间歇式液相本体法工艺生产聚丙烯时,易产生大量废水,包括闪蒸水环真空泵排放水、聚合釜轴封冷却水排放水、聚合升温用热水罐溢流水等。应最大限度地减少废水的排放量。已经采取的废水减排措施包括:对于真空泵逐渐调小供水量(即减少了排放量);将轴封冷却水收回重复利用;维持热水罐的水位稳定,避免产生溢流。采取上述措施在满足生产要求的同时,最大限度地减少了废水排放量。     

Flavour Industry Wastewater Management Case Study

Summary This study is carried out to propose an appropriate treatment technology for wastewater discharged from a flavor production factory. Industrial wastewater discharged from this factory ranges between 50–70 m³/d with an average value of 60 m³/d. The major source of pollution in this factory is due to cleaning of the vessels therefore the treatment has been carried out on the end-of pipe wastewater. The wastewater is characterized by high values of COD, BOD, TSS and Oil and grease 4646, 2298, 1790 and 626 mg/l respectively. Primary sedimentation of the wastewater for four hours reduced the COD, BOD, TSS and Oil and grease by 43, 47, 80 and 74%, respectively. For the treatment of the produced wastewater, the biological treatment process such as activated sludge, rotating biological contactor (RBC), up-flow anaerobic sludge bed reactor (UASB) have been selected. The results from each treatment process proved to be efficient for the treatment of such wastewater. The treated wastewater characteristics are in compliance with the Egyptian law which regulates the discharge of industrial wastewater to the sewerage system. The RBC was selected and installed by the factory as it has the advantage of low operating and maintenance costs. The factory RBC performance was monitored; characteristics of the treated effluent in terms of oil and grease, COD, BOD and TSS were 27, 362, 139 and 95 mg/l, respectively.     

提高炼油厂水污染物排放总量控制

由于该公司排污标准的提高和部分排放指标的削减，必须搞好建设和生产全过程的总量控制，提高排污达标水平。主要措施为：清洁生产，水污染物回收利用，深度净化污水，污水设施运行稳定可靠。经过实施，取得了十分可观的环境效益和经济效益     

丁二酮肟分光光度法测定硝酸镍生产废水中的镍

将丁二酮肟分光光度法应用于硝酸镍生产废水中镍的测定,以过硫酸铵作氧化剂,丁二酮肟为显色剂,在波长465nm处测定硝酸镍生产废水中的镍.     

Global and regional potential of wastewater as a water,nutrient and energy source

There is a proactive interest in recovering water, nutrients and energy from waste streams with the increase in municipal wastewater volumes and innovations in resource recovery. Based on the synthesis of wastewater data, this study provides insights into the global and regional “potential” of wastewater as water, nutrient and energy sources while acknowledging the limitations of current resource recovery opportunities and promoting efforts to fast-track high-efficiency returns. The study estimates suggest that, currently, 380 billion m³ (m³ = 1,000 L) of wastewater are produced annually across the world which is a volume five-fold the volume of water passing through Niagara Falls annually. Wastewater production globally is expected to increase by 24% by 2030 and 51% by 2050 over the current level. Among major nutrients, 16.6 Tg (Tg = million metric ton) of nitrogen are embedded in wastewater produced worldwide annually; phosphorus stands at 3.0 Tg and potassium at 6.3 Tg. The full nutrient recovery from wastewater would offset 13.4% of the global demand for these nutrients in agriculture. Beyond nutrient recovery and economic gains, there are critical environmental benefits, such as minimizing eutrophication. At the energy front, the energy embedded in wastewater would be enough to provide electricity to 158 million households. These estimates and projections are based on the maximum theoretical amounts of water, nutrients and energy that exist in the reported municipal wastewater produced worldwide annually. Supporting resource recovery from wastewater will need a step-wise approach to address a range of constraints to deliver a high rate of return in direct support of Sustainable Development Goals (SDG) 6, 7 and 12, but also other Goals, including adaptation to climate change and efforts in advancing “net-zero” energy processes towards a green economy.     

广州市规模化养猪场废水污染调查与防治对策探讨

广州市规模化养猪业的快速发展带来了严重的环境污染。本文对广州市规模化养猪场的废水污染状况展开研究,在对养猪场的现状进行考察,理清广州市规模化养猪场的数量、分布、建筑形式与养殖工艺的基础上,选取5家有代表性的养猪场进行废水监测,计算统计全市规模化养猪场的废水排放量,并对污染产生的原因进行了分析。结果表明：目前广州市规模化养猪场共有974个,污水排放量为每年8.62×106吨,饲养方式、废水治理措施与生产管理方式在很大程度上影响废水污染物的种类与数量。最后本文从技术以及管理制度的安排方面,提出了防治规模化养猪场废水污染的对策。