沼气发酵液对烟草赤星菌的抑制研究

用不同浓度和不同温度的沼液对烟草赤星菌作抑菌实验研究，结果表明，即使是10％的沼液对烟草赤星菌也有明显的抑制效果；经巴氏灭菌、煮沸、灭菌后的沼液对烟草赤星菌也有一定的抑制作用，但抑菌趋势表现为温度越高抑菌效果越差。通过对沼液与特效农药菌核净(纹枯利)的比较发现，沼液的抑菌效果，与浓度为1：500的菌核净的抑菌效果相当，且抑制效果更加稳定和持久。     

Solar assisted biogas plants III: Energy balance of fixed dome biogas plants and enhancement of production in winters

This paper presents a thermal model of a fixed dome biogas plant, with or without hot charging and having the ground surface above the plant, blackened and glazed. The rate of energy transfer, between the ground and the plant has been determined by electrical simulation experiments, using a small scale model of the plant (made of copper), suspended in copper sulphate solution. For hot charging a shallow solar pond, built on the ground has been considered. The monthly variation of the slurry temperature, corresponding to 1, 4, 8, 15 and 30 m³ plants have been evaluated for Madras, New Delhi and Srinagar, which correspond to typical hot, composite and cold climates; the following cases have been considered:

• 1 Bare plant, without hot charging and blackening/glazing of the ground, above the plant.
• 2 Plant, charged with hot slurry from a shallow solar pond.
• 3 Plant, with ground above blackened and glazed.
• 4 Plant, with ground above blackened and double glazed and also provision for heating the slurry by burning a part of the produced biogas.

It is seen that blackening and single glazing of the ground above the plant is able to maintain the slurry temperature between 28 and 35°C throughout the year in composite climate such as Delhi; in cold climates even double glazing alone is not enough for that purpose. Hot charging from a shallow solar pond alone is not sufficient to maintain satisfactory slurry temperatures in winters of Delhi and of course Srinagar. In hot climates the slurry temperature is sufficiently high, except for a couple of months, when either hot charging from a shallow solar pond or blackening/glazing of the ground above is sufficient to have the slurry temperature in the desirable range. In cold climates such as Srinagar, the desired slurry temperatures can be maintained if a part of the gas produced is burnt for heating the slurry, in addition to blackening and double glazing of the ground above the dome. Theoretical predictions of slurry temperatures have been compared with the field data recorded for an 8 m³ digester at the Energy Complex, Masoodpur, Delhi; the agreement is satisfactory.     

现代汽油车排放及其控制技术综述

简要描述了汽油品质与排放的关系，分析了车用汽油机主要污染物排放量的影响因素，重点介绍了目前国际上汽油机机内、机外排气污染物净化技术，最后对中国与欧美车用汽油机主要采用的排放控制技术进行了对比。     

活塞式内燃机燃用沼气的研究

简要介绍了沼气的产生、成分、物理化学性能以及活塞式内燃机燃用沼气可能发生的燃烧速度慢、后燃严重、排气温度高与热负荷大等问题，提出了掺烧和快速全烧两大措施；并相应研制出沼气-柴油双燃料发动机和火花点火全沼气发动机发电机组来适应这两种燃烧方式，取得了较好效果。最后提出将沼气提纯、加压，使其性能接近压缩天然气来作为汽车燃料的方案。     

基于STM32沼气池多组分监测系统设计

为了满足沼气池的稳定性、安全性、高精度好等特点,采用模块化思想,把数据采集部分和数据处理分开,设计出新型沼气池数据采集系统。该系统具有GPS授时、无线传输模块和多种通信接口,同时从硬件和软件两个方面降低数据采集系统的功耗。通过测试研究,满足沼气实时监测的要求。     

浅析锌粉加入方式对湿法炼锌净化除杂的影响

本文分析了锌粉间断加入和连续加入方式对净化作业的影响,并通过生产实验加以论证。间断加入方式容易导致溶液pH值上升,产生Zn(OH)2的沉淀,阻碍置换反应。连续加入方式锌粉单耗低于间断加入方式,在相同反应条件下、加入相同量的锌粉时,连续加入方式对除杂质效果更好。     

凡口铅锌矿工业废弃物综合利用技术研究

凡口铅锌矿在利用工业废弃物技术研究方面做了大量工作并取得了很大成就。本文介绍了在固体废弃物综合利用方面所采取的尾矿胶结充填、废石充填采空区技术 ,使尾矿利用率达 40 % ,每年在井下回填采空区的废石量达 4万m3。由于选矿工艺技术的改进和提高使尾矿产出率降低了 10 % ,每年少产尾砂 12万t;在废水综合利用方面 ,采用拦截井下裂隙水技术和工业废水治理技术使废水重复利用。这些措施均对凡口铅锌矿的发展产生了巨大的促进作用 ,环保方面也取得了明显的成效 ,被誉为花园式矿山。     

URL净化算法的探讨及改进

信息净化技术是当前研究的热点。介绍了传统的URL净化算法,并分析了其优缺点;将高速缓存等技术引入到传统的URL净化算法中,提出了一种改进的URL净化算法;对传统的URL净化算法及其改进后的URL净化算法进行了比较。     

利用自生气的油气田开发开采工艺技术概况

油气田开发工艺技术中使用的自生气有N2、O2、CO2、ClO2和混合气五大类型，来源于化学反应和微生物的代谢产物。自生N2主要来自亚硝酸盐和铵盐的氧化还原反应。自生O2则来自过硫酸盐和过氧化物的高温分解。白生CO2来自碳酸盐与酸的反应及含氮类有机物的高温分解。自生混合气包括高能气体和生物气，高能气体是火药或炸药爆燃产生的混合气，生物气是微生物代谢产生的混合气。自生气工作液在油气田现场已应用于固井、射孔、解堵、压裂、调剖和三次采油等广阔的领域。本文概述油气田开发开采中利用五大类自生气的19项工艺技术。参43.     

同步厌氧氨氧化甲烷化反硝化处理猪场沼液

针对猪场沼液脱氮难的问题,通过在UASB中实现同步厌氧氨氧化甲烷化反硝化达到脱氮除碳的目的.结果表明:中温条件下(31～35℃),UASB经过成功启动和90d的运行,逐步实现了同步厌氧氨氧化甲烷化反硝化,COD去除率为80% ～90%,NO2-N去除率为90%以上,总氮去除率为50% ～60%,氨氮去除率为8% ～24...