二级出水中磷的混凝处理研究

以北京市某污水处理厂的二级出水中总磷为去除对象,通过混凝的静态烧杯实验[1],确定了二级出水除磷效果较好的絮凝剂聚合氯化铁(PFC)[2]和Al2(SO4)3[3]混合使用的最佳投药量,使出水中磷(TP)符合再生水水质标准的要求.絮凝剂组合时静态混凝烧杯实验表明:PFC-Al2(SO4)3体积比1∶1时,最佳投药量离子浓度比为:Fe3 /Al3 ∶9.9/7(mg·L-1),此时TP去除率为93%,浊度去除率为33%.PFC-Al2(SO4)3体积比1:2时,最佳投药量离子浓度比为:Fe3 /Al3 ∶4.95/7(mg·L-1),此时TP去除率为88%,浊度去除率为71%.     

污水汽提重沸器试运综述

对武汉分公司两套污水汽提装置的重沸器进行试运，调查测试排水车间现有装置节水与节能的平衡点。通过试运，掌握了两台重沸器与相应单塔之间的负荷差值数据，制订出了装置节能运行方案，实现节水、节能双赢。     

处理含油废水絮凝剂最佳配方的筛选

针对含油废水，选择合适种类的絮凝剂，通过评价絮凝剂的除油效果，筛选出适合处理石油化工行业含油废水的絮凝剂最佳配方．其主要特点是投加量少、除油效果好、价格适宜。     

乡镇企业环境保护工作初探

近年来，乡镇企业蓬勃发展的趋势要求我们必须重视其环境保护工作．笔者通过联系当地的实际情况力图阐明自己对于如何搞好乡镇企业环境保护工作的一些观点。     

基于GIS的海洋环境质量评价图编制

本文介绍了采用地理信息系统技术制作海洋环境质量评价图的基本内容，重点阐述了图件的表现形式、编制过程和具体的操作方法，为海洋环境质量评价图的制作提供了一种新的方法。     

草履虫──针杆藻群落对混合印染废水净化作用的条件实验

本文对混合印染废水的静态净化过程，进行了生物群落观察和条件实验。发现废水净化初期以大量细菌和草履虫（以 Ｐ． Ｃａｕｄａｔｕｍ为主）繁殖为特征，同时伴生着少量浮游藻类。随着净化过程的进行，细菌和草履虫数量下降，以针杆藻（以 Ｓ． ａｕｃｓ为主）为建群种的浮游藻类群落占优势。化学分析表明，净化作用与温度、光照条件及废水起始浓度有关。     

Analysis and improving ways for water condition in winter wheat field of dryland in subhumid areas of the loess plateau

Based on the soil moisture data from the locating experiments from 1986-1990, and using the water balance method, the water supply and demand state in the field of winter wheat, and the ways for improving water condition in dryland of subhumid by dry area of the Loess Plateau were studied. The results suggested that a low precipitation satisfying ratio of 42.9%-58.8% appears in the growing period of winter wheat, and the yield, to a great extent depends on the water that was stored in deep soil layer in the previous rainy season. The filed trial results showed that tillage in the summer fallow period,straw cover, soil moisture regulation with adequate fertilization, crop rotation and proper croppingsystem could be the efficient ways for improving the water condition,and for the exploitation and utilization of natural water resources(both precipitation and soil water) in the winter wheat field of dryland.     

我与中国环保事业的不解之缘

我非常高兴《环境》杂志的约稿，借此机会跟大家分享一下我这些年来丰富的经历和有趣的故事。两个关键词构成了我近十几年来人生的主题：一个是“环保”，一个是“中国”。前不久，我在给中国同事的新年嘏辞中还写道：在这个世界上我找不到任何其他东西能像环境保护那样，让我的人生充满意义。     

Decomplexation of Cu-1-hydroxyethylidene-1,1-diphosphonic acid by a three-dimensional electrolysis system with activated biochar as particle electrodes

The feasibility of decomplexation removal of typical contaminants in electroplating wastewater, complexed Cu(II) with 1-hydroxyethylidene-1,1-diphosphonic acid (Cu-HEDP), was first performed by a three-dimensional electric reactor with activated biochar as particle electrodes. For the case of 50 mg/L Cu-HEDP, Cu(II) removal (90.7%) and PO initial pH 7, acid-treated almond shell biochar (AASB) addition 20 g/L, and reaction time 180 min, with second-order rate constants of 1.10 × 10⁻³ and 1.94 × 10⁻⁵ min⁻¹respectively. The growing chelating effect between Cu(II) and HEDP and the comprehensive actions of adsorptive accumulation, direct and indirect oxidation given by particle electrodes accounted for the enhanced removal of Cu-HEDP, even though the mineralization of HEDP was mainly dependent on anode oxidation. The performance attenuation of AASB particle electrodes was ascribed to the excessive consumption of oxygen-containing functionalities during the reaction, especially acidic carboxylic groups and quinones on particle electrodes, which decreased from 446.74 to 291.48 µmol/g, and 377.55 to 247.71 µmol/g, respectively. Based on the determination of adsorption behavior and indirect electrochemical oxidation mediated by in situ electrogenerated H₂O₂ and reactive oxygen species (e.g., •OH), a possible removal mechanism of Cu-HEDP by three-dimensional electrolysis was further proposed.     

降低油品储运损耗 改善大气环境

从石油开采到成品油进入清费的过程中，损耗量约占原油量的3％－5％，其中储运过程中的损耗占总耗的40％－50％，着重论述了油品储运过程中降低损耗的措施，以减少经济损失和对环境的破坏。