SE—Structure and Environment: Practicalities, Costs and Effectiveness of a Floating Plastic Cover to reduce Ammonia Emissions from a Pig Slurry Lagoon
SE—Structure and Environment: Practicalities, Costs and Effectiveness of a Floating Plastic Cover to reduce Ammonia Emissions from a Pig Slurry Lagoon
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SE—结构与环境：浮动塑料盖减少猪粪泻湖氨排放的实用性、成本和有效性
DOI：
10.1006/jaer.2001.0744
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
A. Williams
中科院分区：
文献类型：
--
作者：
I. M. Scotford;A. Williams
这项研究的目的是评估覆盖最大泥浆表面积为525m2的猪泥泻湖的可行性和成本。泻湖覆盖着0)5毫米厚的增强型紫外线(UV)稳定黑色不透明聚乙烯。在掩护行动中，发现了几个实用的地方。由于泻湖已经满了，所以很难估计覆盖泻湖所需材料的大小，同时确保有足够的空间让泻湖“空”。掩护行动本身需要一个风平浪静的一天，而且非常耗费人力。覆盖比本研究所涵盖的泻湖更大的泻湖可能需要空置，这在商业养猪单位通常是不切实际的。覆盖泻湖的总成本为C8400，相当于覆盖泥浆表面的C16m~2。如果覆盖更大的泻湖，将产生规模经济，单位面积泥浆表面的材料成本可能会降低，尽管人工成本可能会增加。测量了无盖泻湖和有盖泻湖的氨排放量。氨的排放是用罩测量的，每个罩的表面积为5m2。每个罩上都有一条进风管和一条出风管。用12V的风扇将空气送进风罩，在被测表面上的最大风速为4ms~1。通过位于入口和出口管道中的费姆管测量进入和离开引擎盖的氨#UX。无盖泻湖的氨排放速率(经风速校正)为0.63~3.66gm~2d~1。#覆膜覆盖可防止近100%的氨排放。(2001年西尔索研究所
The objectives of this research were to assess the practicalities and costs of covering a lagoon of pig slurry, with a maximum slurry surface area of 525 m 2 . The lagoon was covered with 0)5 mm thick reinforced ultraviolet (UV) stabilized black, opaque polyethylene. During the covering operation, several practical di$culties were identi"ed. Since the lagoon was full, it was di$cult to estimate the size of the material required to cover the lagoon whilst ensuring su$cient space to allow the lagoon to "ll and empty. The covering operation itself required a calm day and was very labour intensive. Covering lagoons larger than the one covered in this study may necessitate them to be empty, which is often not practical in commercial pig units. The total cost of covering the lagoon was C8400 which equated to C16 m~2 of slurry surface covered. If larger lagoons are covered, economies of scale come into e!ect and the material costs per unit area of slurry surface are likely to reduce, although the labour cost may increase. Ammonia emissions were measured from both an uncovered lagoon and covered lagoon. The ammonia emissions were measured using hoods, each covering a surface area of 0) 5m 2. Each hood was "tted with an inlet pipe and outlet pipe. Air was forced into the hood using a 12 V fan which gave a super"cial air velocity of 0) 4ms ~1 across the measured surface. The ammonia #ux was measured into and out of the hoods by Ferm tubes situated in the inlet and outlet pipes. The ammonia emission rates (corrected for wind speed) from the uncovered lagoon ranged from 0)63 to 3)66 g m~2 d~1. The #oating plastic cover prevented nearly 100% of these emissions. ( 2001 Silsoe Research Institute