共查询到19条相似文献,搜索用时 171 毫秒
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造纸行业是高污染行业,目前我国制浆造纸工业污水排放量约占全国污水排放量的10 ̄12%,居第三位;污水中COD(化学耗氧量)约占全国总排放量的40 ̄45%,高居第一位。针对占造纸污染负荷80%的蒸煮黑液,安徽新宇纸业多年来一直致力于研究其有效的处理与转化技术,并利用造纸制浆黑液和中段水污泥等废物生产高效有机复合肥,取得了显著的经济效益和环境效益,走出了发展循环经济的新路子。 相似文献
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造纸黑液是最严重的水污染物之一,目前国内还没有一种能彻底治理黑液的方法,球溪河糖厂经过多年探索,试验,工业化治理运行,认为厌氧消化是治理中小型,亚铵法纸厂制浆黑液适宜方法。 相似文献
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制浆造纸工业水污染物排放标准(GB 3544-2008) 本标准规定了制浆造纸企业或生产设施水污染物排放限值.本标准适用于现有制浆造纸企业或生产设施的水污染物排放管理. 相似文献
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Summary In this paper, pollutants in air, water and as solids which stem from the paper industry are discussed, and pollution abatement measures are suggested. The Pulp and Paper Industry is highly capital, material and energy intensive and return on investment is very low. This paper reviews some emerging international principles which are effective in reducing both effluent treatment costs per tonne of paper and the mill discharges, to levels where their environmental impacts become far less significant than at present.Mr Avijit Dey is a graduate in Chemical Engineering from Jadavpur University and at present is Design Engineer in the Paper and Process Cell of Development Consultants Ltd, 24-B Park Street, Calcutta 70016, India. Dr B. Sen Gupta is Reader in the Chemical Engineering Department of Jadavpur University, Calcutta. He obtained his BChE and PhD in Chemical Engineering from Jadavpur University and an ME in Chemical Engineering from the Indian Institute of Science, Bangalore. His research interests involve pulp and paper technology, water conservation and management, and pollution control. 相似文献
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简述了我国造纸业现状及面临的环境压力,介绍了我国清洁生产现状及发展趋势。针对造纸业"消耗高、污染大、效率低"的问题,结合实际造纸行业案例,提出了相应的清洁生产工艺和方案,以及关于大力发展造纸业清洁生产、促进节能减排的建议。 相似文献
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The pulp and paper industry is energy intensive and consumes large amounts of wood. Biomass is a limited resource and its efficient use is therefore important. In this study, the total amount of biomass used for pulp and for energy is estimated for the production of several woodfree (containing only chemical pulp) and mechanical (containing mechanical pulp) printing paper products, under Swedish conditions. Chemical pulp mills today are largely self-sufficient in energy while mechanical pulp mills depend on large amounts of external electricity. Technically, all energy used in pulp- and papermaking can be biomass based. Here, we assume that all energy used, including external electricity and motor fuels, is based on forest biomass. The whole cradle-to-gate chain is included in the analyses. The results indicate that the total amount of biomass required per tonne paper is slightly lower for woodfree than for mechanical paper. For the biomass use per paper area, the paper grammage is decisive. If the grammage can be lowered by increasing the proportion of mechanical pulp, this may lower the biomass use per paper area, despite the higher biomass use per unit mass in mechanical paper. In the production of woodfree paper, energy recovery from residues in the mill accounts for most of the biomass use, while external electricity production accounts for the largest part for mechanical paper. Motor fuel production accounts for 5–7% of the biomass use. The biomass contained in the final paper product is 21–42% of the total biomass use, indicating that waste paper recovery is important. The biomass use was found to be about 15–17% lower for modelled, modern mills compared with mills representative of today's average technology. 相似文献
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实施污染物总量减排是我国环境管理和污染控制的重大举措,“十二五”期间仍将是我国环境保护的重点内容。本文根据四川省“十一五”总量减排的成效和问题,结合国家对“十二五”总量减排的新要求和特点,从畜禽养殖、城镇生活污染、机动车尾气防治、重点行业减排等方面,对未来减排存在的压力进行了分析,并由此提出了优化产业结构、严把项目准入关、加强环保基础设施建设和管理、加强机动车污染防治、加强畜禽污染治理、加强重点污染源治理、构建综合保障体系等措施和建议。 相似文献
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作者以较长时间关注四川省环保产业,结合主持四川省环保产业"十二五"发展规划的编制,对四川环保产业的目标确定、发展方向和重点领域、产业布局及园区建设、机制体制创新等有关问题进行深入思考的总结。本文提出从新的高度认识发展环保产业的意义,从必要性和可行性两方面考虑制定环保产业发展目标。首次提出了环境差别化的概念,并根据环境差别化和比较优势确定环保产业发展方向和重点领域。本文还剖析了四川环保产业园区建设存在的问题,并提出了破解的办法。本文最后提出了通过机制体制创新、加强科技支撑、完善统计制度、拓宽融资渠道等措施推动四川省环保产业又好又开发展的建议。 相似文献