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| | This article discusses some problems that face us in the water pollution control in China . introduces the relevant experiences in foreign countries,and makes the following suggestions; rectification of policies and standards currently prevailing : implementation of joint treatment programs of municipal sewage and industrial wastewater: government financial support and favourable economic policies to the wastewater utilities; enabling the latter to be fiscaly self supporting and self developing. | | 本文概述了我国水污染控制存在的若干问题和国外有关经验,并提出以下对策建议:修改某些有关水污染控制的现行政策与标准;实行城市生活污水与工业废水的综合治理:对污水设施实行优惠的经济政策,广辟资金来源;实行排水事业管理经营企业化,使其逐步具备经济上自立和自我发展的能力。 | | 文摘来源 | | This paper introduces the method of comprehensive treatment of copper wastewater, and puts emphasis on the displacement process. It is indicated that in displaemcent with iron filings under stirring, there is a significant transition point. Before it the removal efficiency of copper increases rapidly as the increase of displacement time, but after it slowly. It is also indicated that the pH value (2-5) and iron content (F_(cT) | | 本文在研究含铜废水综合治理方法时着重研究了铁的置换作用,发现在置换过程中存在着一个有意义的转变点。在该转变点前铜的去除率随置换时间增加迅速增加,以后则增加缓慢。同时还表明、在废水pH值为2~5、含铁总量<1000mg/L时进行置换处理,对铜的去除率没有多大影响。单一采用铁屑置换法除铜,出水铜含量往往偏高;用置换—转化法综合治理,废水中大部分铜在置换中以海绵铜回收,小部分铜在转化中以硫化铜回收,总回收率>99%。出。水铜含量<0.5mg/L,可以回用。 | | 文摘来源 | | The anaerobic fermentation-alage method, which selects a strongly aoid-resistant anaerobic methanobacterium and a strongly base-resistant Spirulina and Oscillatoria,respectively,treads the organic sewage containing CODc r 50000 mg/1 Conceniration with using speeial anaerobic bacteria digestor and alage purifier and technology. It has measered CODc r300 mg/1 approximately with the drain away water. As the drain away water was treaded by alage purifying pool further, however, it is conforming to the law of se... | | “厌氧发酵—藻类”法——分别选育耐强酸的厌氧甲烷菌株和耐强碱的螺旋藻,颤藻。采用具有特色的厌氧消化器和藻类净化器工艺,得理CODCr为50000mg/l的高浓度有机污水,出水CODCr降至300mg/l左右,再用藻类净化池进一步处理,即可达到排放标准。其中螺旋藻净化效果已达到日本同类专利水平。 本工艺处理高浓度有机污水,既能获得生物能源甲烷,又可获得含蛋白质60%左右的螺旋藻,可作为精饲料。本法为我国酿造、食品、医药等工业废水的综合治理和利用开辟了新途径。 | | 文摘来源 | |   | | << 更多相关文摘 |
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