论工业废料在地基处理工程中的应用

本文着重论述了工业废料在建筑工程及地基基础处理方面的应用及施工方法,并在造价方面与其它方法进行比较,从而论证了工业废料在建筑工程方面的实用性。     

猪场废水的生物处理技术及其效果

规模化养猪场所产生的废水污染，已成我国农村面临污染的重要来源。针对这种污染，近年来出现了多种养猪场废水处理法，其中研究和应用最广的是生物处理法。本文通过对目前国内猪场废水生物处理法的现状分析后认为：用生物处理法处理猪场废水是今后猪场废水处理的发展方向；而生物处理法自身的发展方向是混合处理法；计算机和生物工程技术将进一步与生物处理法相结合运用于猪场废水处理。     

汽提污水中有机物的GC／MS分析

应用了ＧＣ／ＭＳ方法分析炼油厂汽提污水中的有机物，其结果可作为实用除油技术的依据。     

A review of diet formulation strategies and feeding systems to reduce excretory and feed wastes in aquaculture

Significant efforts should be devoted to reducing waste outputs from aquaculture operations in order to lower the environmental impacts of aquaculture in many parts of the world. Since most aquaculture wastes are ultimately from dietary origin, reduction of waste outputs should first be through improvements of diet formulation and feeding strategies. The first step in the production of feeds producing less solid waste is to eliminate poorly digestible ingredients (such as whole grain or grain by-products used as binders and fillers in the feed formulae) and to use highly digestible ingredients with good binding properties. Further reduction of solid waste can then be achieved through careful selection of the ingredients to improve apparent digestibility and the nutrient balance of the feed. Nitrogen waste outputs can be reduced through the reduction of the digestible protein to digestible energy (DP/DE) ratio of the diet. Phosphorus waste outputs can be reduced through careful selection of the ingredients and optimization of the digestible phosphorus content of the diet to meet the requirement of the fish but avoid greatly exceeding this required level. Finally, feeding practices that minimize feed wastage should be adopted since feed wastage can have a very significant impact on waste outputs from fish culture operations.     

保定市工业废水农灌的研究

本文论述了保定市工业废水经农灌土地处理,对土壤、地下水和农作物品质的影响。结果表明:以造纸、食品、轻纺和化工为主的工业废水在重金属常年不超出农灌标准下,宜于在非盐化土壤灌溉;废水中硫化物超标,通过土壤生物区系,能降低毒性;废水中常规有机物,农灌后利大于害;只要在土壤容量允许内,可具有二级污水处理工艺不能完成的效果。     

The Occurrence of Salmonella in Airline Meals

The occurrence of Salmonella in airline meals was studied in 1989-1992. Samples were collected from flight kitchens in 29 countries. The material consisted of 400 cold dishes and 1,288 hot dishes as well as salads, cheese plates and desserts. Total number of samples was 2211. Salmonella spp. were isolated from 6 samples; 1 contaminated sample was a cold dish prepared in Bangkok, 1 was a hot dish prepared in Mombasa and the remaining 4 contaminated samples were hot dishes prepared within one week in Beijing. The isolated serotypes were S. ohio, S. manchester and S. braenderup. The contaminated cold dish prepared by a flight kitchen in Bangkok was found to be connected with a Salmonella outbreak which occurred in Finland in 1990. Cold airline dishes containing food of animal origin seems to be more risky as a source of Salmonella infections among airline passengers.     

苹果渣发酵料栽培糙皮侧耳优良菌株的选育

新选育的糙皮侧耳菌株PL -A2 属于早熟型品种。该菌株菌丝在 5～ 37℃温度范围内均能生长 ,菌丝生长适温为 18～ 30℃ ,最适温度为 2 5～ 2 8℃。在苹果渣发酵料培养基上 ,菌丝粗壮、整齐、洁白 ,爬壁能力强 ,满袋天数为 2 2d± 1d。经推广栽培证明 ,PL -A2 是高产优质菌株     

利用废菌糠提高覆土持水力和蘑菇产量的研究

本文利用平菇等食用菌的废菌糠 ,经适当无氧发酵等一系列处理后添加到普通泥土中 ,使其最大持水力提高至 5 1 3% ,单产提高 13 6 %     

沉淀／电解集成处理高盐冶金废水实验研究

通过沉淀／电解集成处理高盐冶金废水进行了实验，研究表明：以CaCl2作为沉淀剂，处理冶金萃取废水脱除SO4^2-离子，当原水SO4^2-离子浓度为103．0g／L，投加CaCl2 82．18g／L，出水SO4^2-最低880mg／L，去除率在99．15％；回收CaS04纯度95％～98％，经沉淀处理后的上清液在pH—11．2，极板间距为7mm，电解时间60min，获得氯离子浓度为3200mg／L，氢氧根浓度为40g／L的回用水，可完全满足回用要求。     

锅炉烟气余热用于木材干燥的节能改造

针对广东某胶合板企业2台蒸汽锅炉排烟温度高,不能根据工序用热需求实现能源梯级利用的问题,提出了锅炉烟气余热利用方案。根据干燥窑干燥木材的特点,将蒸汽锅炉的烟气引入干燥窑内的换热器用于干燥木材,每年通过回收利用的锅炉烟气余热折合标煤达439t。