共查询到12条相似文献,搜索用时 46 毫秒
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利用啤酒生产过程中排放的糟渣,废酵母和糟液喂猪,利用低浓度废水冲洗猪舍;将猪粪用于生产沼气,沼气用于锅炉及生活燃料,沼渣,沼液用于农业,渔业生产,实现生态良性循环。 相似文献
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《农业工程学报》2000,(3)
通过 2年的技术示范和推广 ,河北省石家庄市 1 998年全市秸秆综合利用率达到 86.4% ,1 999年增加到 96.4% ,2年累计利用秸秆 1 60 5万 t,不仅解决了环境污染问题 ,新增产值 1 2 .56亿元 ,新增纯收入 1 2 .1 8亿元。其综合利用技术总结为五大类 :1秸秆机械直接还田、秸秆培肥果及秸秆生物菌沤制。2秸秆饲料技术 :包括秸秆青贮、氨化、微贮 ,及秸秆生物饲料、秸秆配合颗粒饲料、秸秆块状饲料、饲用玉米及饲草种植。 3秸秆燃料技术 :主要有沼气技术和秸秆气化技术。4秸秆基料生产食用菌技术。5秸秆原料技术 :有秸秆生产生物制剂“CHA”、五防… 相似文献
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安吉县竹类资源优势突出,综合利用已初具规律,竹业工业已成为新兴工业门类,竹类经济已是地方经济的一个台柱子,但竹业结构不合理,竹制品雷同性大,增值率低,资源供需矛盾突出等日益明显,对今后竹类资源利用和持续发展,提出了主要思路。 相似文献
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Inger Odnevall Wallinder Sofia Bertling Dan Berggren Kleja Christofer Leygraf 《Water, air, and soil pollution》2006,170(1-4):17-35
A cross-disciplinary research project has been implemented because of increased awareness of the potential environmental effects caused by dispersion of metals from external applications into the environment. The work comprises a 4-year (1998–2002) field exposure of grades 304 and 316 stainless steels, and a laboratory percolation study simulating 20–25 years of chromium and nickel containing runoff water interactions with soil. Total metal annual release rates varied between 0.2 and 0.7 mg m?2 yr?1 for Cr, between 0.1 and 0.8 mg m?2 yr?1 for Ni and between 10 and 200 mg m?2 yr?1 for Fe. Most Cr and Ni is present in an ionic form as a result of the limited presence of organic matter at the immediate release situation. Metal ion concentrations in the runoff water are far below reported ecotoxic concentrations. Studies of the environmental interaction between runoff water from stainless steel and soil show the majority of released Cr and Ni to be retained and their concentrations in percolation water to be very low (0.5–1 μg L?1 and 1–5.5 μg L?1 for Cr and Ni, respectively). Speciation calculations showed Cr to be primarily complexed to dissolved organic carbon while Ni also was present in an ionic form in the solution phase. Soil extractions showed Cr and Ni to be very strongly retained within the soil. 相似文献
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舞阳矿业公司铁古坑山坡排土场 ,设计排土期限为 1987~ 2 0 2 0年 ,为控制排土过程中的水土流失 ,水土保持方案编制单位设计了“上截中排下拦”防护模式 ,即排土场上游挖截洪沟 ,堆土平台进行反坡整治并修排水沟 ,排土场下部建拦沙坝 ,取得较好的防护效果。 相似文献