广州感潮河段西航道水源水体富营养化限制因素的研究

随着城区的不断扩大，广州市饮用水源地水质日益变差，部分潮汐水体曾经出现富营养化的现象，控制污染，保护水源的饮用水安全已经越来越迫切。文章通过现场水体水样的氮、磷实验，找出水体富营养化的限制因素，为控制水污染提供有效的科学依据。     

Determnation of ochratoxin A in grain by monoclonal antibody-based enzyme-linked immunosorbent assay

ＤｅｔｅｒｍｎａｔｉｏｎｏｆｏｃｈｒａｔｏｘｉｎＡｉｎｇｒａｉｎｂｙｍｏｎｏｃｌｏｎａｌａｎｔｉｂｏｄｙ－ｂａｓｅｄｅｎｚｙｍｅ－ｌｉｎｋｅｄｉｍｍｕｎｏｓｏｒｂｅｎｔａｓｓａｙＹａｎｇＣｈｕａｎｈｅ；ＬｕｏＸｕｅｙｕｎ；ＬｉｕＣｈａｎｇ；ＬｉＷｅｎ...     

有害废物堆肥技术及堆肥生态系统研究进展

介绍了现代堆肥技术的特点及发展，近年在堆肥生态系统的研究表明，除去在堆肥中起重要作用的微生物学过程及生物因子外，非生物因子的作用也不容忽视。影响微生物活性和对堆肥反应速率起作用的非生物因子有温度，水分含量，通风供氧，ｐＨ毒物初始浓度，有机质含量和碳氮比等。     

水解──好氧混凝工艺处理啤酒厂废水

本文报道了用上升流厌氧污泥床（水解）和二段生物接触氧化池对啤酒厂废水进行的生化处理中试。当上升流厌氧污泥床进水CODer浓度为2000mg／L，经水解─好氧工艺处理后，第二段生物接触氧化池出水CODcr浓度为220．5mg／L，进一步经混凝沉淀处理后，出水CODcr达80．2mg／L。     

Kinetic analysis of anaerobic phosphorus release during biological phosphorus removal process

Enhanced biological phosphorus removal (EBPR) is a commonly used and sustainable method for phosphorus removal from wastewater. Poly-β-hydroxybutyrate (PHB), polyphosphate, and glycogen are three kinds of intracellular storage polymers in phosphorus accumulation organisms. The variation of these polymers under different conditions has an apparent influence on anaerobic phosphorus release, which is very important for controlling the performance of EBPR. To obtain the mechanism and kinetic character of anaerobic phosphorus release, a series of batch experiments were performed using the excessively aerated sludge from the aerobic unit of the biological phosphorus removal system in this study. The results showed that the volatile suspended solid (VSS) had an increasing trend, while the mixed liquid suspended sludge (MLSS) and ashes were reduced during the anaerobic phosphorus release process. The interruption of anaerobic HAc-uptake and phosphorus-release occurs when the glycogen in the phosphorus-accumulating-organisms is exhausted. Under the condition of lower initial HAc-COD, HAc became the limiting factor after some time for anaerobic HAc uptake. Under the condition of higher initial HAc-COD, HAc uptake was stopped because of the depletion of glycogen in the microorganisms. The mean ratio of Δρ _P/Δρ _PHB, Δρ _GLY/Δρ _PHB, Δρ _P/ΔCOD, was 0.48, 0.50, 0.44, and 0.92, respectively, which was nearly the same as the theoretical value. The calibrated kinetic parameters of the HAc-uptake and phosphorus-release model were evaluated as follows: Q _HAc,max was 164 mg/(g · h), Q _P,max was 69.9 mg/(g · h), K _gly was 0.005, and KCOD was 3 mg/L. An apparently linear correlation was observed between the ratio of Δρ _P/ΔCOD and pH of the solution, and the equation between them was obtained in this study. Translated from Acta Scientiae Circumstantiae, 2005, 25(9), 1164–1169 [译自: 环境科学学报]     

德兴铜矿选矿厂大型石灰料仓除尘

介绍德兴铜矿选矿厂大型石灰料仓在汽车卸料时产生的大量石灰粉尘的收集、净化处理方式及袋式除尘器主要性能参数的确定。     

评价甲基环戊二烯基三羰基锰(MMT)抗爆剂

评述了抗爆剂甲基环戊二烯基三羰基锰（MMT）研究和应用的最新进展。MMT的合成工艺简单，抗爆能力优良，燃烧沉积物易于清除，不会堵塞尾气催化净化剂，毒性较小，环境安全性高，可替代四乙基铅作为抗爆剂。     

苯酚对蔬菜幼苗生长及氧化酶同工酶的影响

含酚污水是当前世界上危害大,污染范围广的一种工业污染源.未经处理直接排放到市郊农村的工业污水严重污染农业生态环境.一些学者就其对鱼类、小麦的毒性影     

重庆南山酸雨与马尾松衰亡的关系

1985—1986年对重庆南山马尾松林衰亡与酸雨的关系进行了研究。四个月的雨水监测表明南山酸雨况情严重。酸雨频率百分之百,平均pH4.2—4.4,最低pH3.6—4.0。土壤酸化程度较重(pH3.7—4.0)。土壤酸化的主要原因是酸雨的输入。濒死树针叶中锰和钴元素大为减少,与土壤中这两种元素的减少相对应。濒死树针叶中铝大量积累,土壤中活性铝增多和铝钙比增大。初步肯定酸雨是南山马尾松衰亡的重要原因之一。     

Impact of photosynthesis and transpiration on nitrogen removal in constructed wetlands

To determine the impact of photosynthesis and transpiration on nitrogen removal in wetlands, an artificial wetland planted with reeds was constructed to treat highly concentrated domestic wastewater. Under different meteorological and hydraulic conditions, the daily changes of photosynthesis and transpiration of reeds, as well as nitrogen removal efficiency were measured. It was found that net photosynthesis rate per unit leaf area was maintained on a high level (average 19.0 μmol CO₂/(m²·s)) from 10:00 to 14:00 in July 2004 and reached a peak of 21.1 μmol CO₂/(m²·s) when Photon Flux Density was high during the day. Meanwhile, TN and NH₄ ⁺-N removal efficiency rose to 79.6% and 89.6%, respectively—the maximum values observed in the test. Correlation coefficient analysis demonstrated a positive correlation among photon flux density, net photosynthetic rate, transpiration rate, and TN and NH₄ ⁺-N removal efficiency. In contrast, there was a negative correlation between stomatal conductance and TN and NH₄ ⁺-N removal efficiency. Results suggest that the photosynthesis and transpiration of wetland plants have a great impact on nitrogen removal efficiency of wetlands, which can be enhanced by an increase in the photosynthesis and transpiration rate. In addition, the efficiency of water usage by reeds and nitrogen removal efficiency could be affected by the water level in wetlands; a higher level boosts nitrogen removal efficiency. Translated from China Environmental Science, 2006, 26(1): 30–33 [译自: 中国环境科学]