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首页> 外文期刊>Environmental toxicology and chemistry >ENVIRONMENTAL LOADS FROM WATER-SPRINKLED SOFTWOOD TIMBER. 1. CHARACTERISTICS OF AN OPEN AND A RECYCLING WATERING SYSTEM
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ENVIRONMENTAL LOADS FROM WATER-SPRINKLED SOFTWOOD TIMBER. 1. CHARACTERISTICS OF AN OPEN AND A RECYCLING WATERING SYSTEM

机译：水浸软木木材的环境负荷。 1.开放式和循环水系统的特点

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摘要

The concentrations of a number of organic and inorganic compounds in the wastewater from sprinkling of landstored softwood timber was monitored during a period of up to 18 weeks. A recycling system using a watering intensity of 160 mm/24 h, and an open system with intensities between 55 to 12 mm/24 h were studied. The compound classes investigated included dissolved organic carbon; distillable phenols; resin acids; bacterial phospholipid fatty acids (PLFA); organic and inorganic phosphorus, sulfur, and nitrogen; and a number of metal ions. In the recycling system, the peak concentrations occurred after 4 to 6 weeks, and the amounts accumulated through refilling of water largely exceeded those present in the wastewater at the end of the storage. In the open system, net loads of compounds occurred during the first weeks, which thereafter turned into uptakes for most compounds. The PLFA increased during the first weeks and clearly responded to the peak concentrations in the waters. Already from the start there were strong uptakes of nitrate, sulfate, and many minerals in the piles, suggesting that the supply of macro- and micronutrients necessary for microbial growth, as well as available terminal electron acceptors, may be a limiting factor for the extent of microbial degradation performed in the pile.
机译：在长达18周的时间内，对洒落在土地储存的软木木材中的废水中许多有机和无机化合物的浓度进行了监测。研究了使用160 mm / 24 h浇水强度的回收系统和强度在55至12 mm / 24 h之间的开放系统。研究的化合物类别包括溶解的有机碳。可蒸馏酚树脂酸；细菌磷脂脂肪酸（PLFA）;有机和无机磷，硫和氮；和许多金属离子在回收系统中，峰值浓度在4到6周后出现，并且通过补充水而积累的量大大超过了存储结束时废水中的含量。在开放式系统中，化合物的净负荷在最初的几周内发生，此后变成大多数化合物的吸收量。 PLFA在最初的几周内增加了，并且明显响应了水域中的峰值浓度。从一开始就已经大量吸收了硝酸盐，硫酸盐和许多矿物质，这表明微生物生长所必需的大量和微量营养素的供应以及可用的末端电子受体可能是限制该程度的因素。堆中发生的微生物降解情况。

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