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    • 3. 发明公开
    • LANDFILL LEACHATE WASTEWATER TREATMENT SYSTEM AND PROCESS THEREOF
    • 系统ZER VERARBEITUNG VON DEPONIESICKERWASSER UND VERFAHRENDAFÜR
    • EP2433910A1
    • 2012-03-28
    • EP10777380.6
    • 2010-05-20
    • Shanghai Tongji Construction Technology Co., Ltd.
    • KUANG, ZhipingLU, BinXIONG, Wei
    • C02F9/14C02F3/30C02F1/72C02F1/28
    • C02F9/00C02F1/001C02F1/283C02F1/66C02F1/725C02F1/78C02F3/06C02F3/106C02F3/1268C02F3/302C02F2103/06C02F2103/24C02F2203/002Y02W10/15
    • This invention relates to a refuse landfill leachate wastewater treatment system comprising a collection well, an adjustment tank, a filter, a comprehensive treatment system having a multi-stage anoxic/aerobic pool and a membrane biological reactor. The process of treatment is: waste water enters a adjustment tank in which water quality and quantity are adjusted; the water subsequently enters a filter, and the water is discharged from the filter and enters a comprehensive treatment system having a multi-stage anoxic/aerobic pool and a membrane biological reactor, wherein waster water is biochemically treated to remove the organic substances, nitrogen and ammonia, and then the wastewater is discharged into a catalyzed oxidation tower; the organic substance in waste water is oxidized on effect of ozone and under the existing catalyst function and then the biochemical capacity thereof is enhanced; and then the catalyzed and oxidized waste water enters carbon filter pool, the remaining contaminated matter can be further removed by degradation of the anoxic oxidation of the biological membrane on the packing material in pool, then the output water meets the requirement of National Standard or other relevant industrial standards.
    • 本发明涉及垃圾填埋场渗滤液废水处理系统,其包括收集井,调节槽,过滤器,具有多级缺氧/需氧池的综合处理系统和膜生物反应器。 处理过程是:废水进入水质和水量调整的调节罐; 水随后进入过滤器,水从过滤器排出并进入具有多级缺氧/需氧池和膜生物反应器的综合处理系统,其中废水经生物化学处理以除去有机物质,氮和 氨,然后废水排入催化氧化塔; 废水中的有机物质在臭氧的作用下氧化,在现有的催化剂作用下,其生化能力得到提高; 然后将催化氧化废水进入碳过滤池,剩余的污染物可以通过池中包装材料上的生物膜的缺氧氧化降解进一步去除,然后输出水满足国家标准等要求 相关行业标准。
    • 7. 发明公开
    • TREATMENT OF SOLID AND LIQUID EFFLUENTS FROM TAN-YARDS FOR REMOVING AND RECOVERING THE CHROMIUM CONTAINED IN THE EFFLUENTS
    • 制革废水和悬浮液处理,去除和Chrome浏览器RE-WIN。
    • EP0637570A1
    • 1995-02-08
    • EP94906933.0
    • 1994-02-11
    • CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS
    • AMER AMEZAGA, Sebastián,AMUTIO POLO, GuillermoCOT COSP, Jaime Centro Investigacion y DesarrolloDE LA CUADRA HERRERA, Antonio Cent. Nac. Invt.LIMPO GIL, José, Luis Centro Nacional InvestigaciLUIS MARTIN, Angel Centro Nac. Invt. MetulorgicasMANICH BOU, Alberto Centro Invest. y Desarrollo
    • C02F9/00
    • C02F1/66C02F1/722C02F2101/22C02F2103/24C02F2103/28
    • The present invention relates to the integral treatment of chromium containing wastes from tan-yards according to the diagram of figure (1). There is provided one or two solid (1) and/or liquid (2) effluents which contain chromium. The solid effluent is subjected to a treatment (4) with perborate (3) producing a chromium-free residue (5) which is treated by conventional methods (for example hydrolysis in order to produce gums or chelagen) and waters which contain the chromium present as Cr(VI). Said Cr(VI) is reduced to Cr(III) by redution in acid medium at (6). In a reactor (7) the solution containing Cr(III) is treated continuously with an alkaline solution (8), to give waters with less than 1 ppm of Cr(9) and a pulp (10) containing Cr(OH)₃.3H₂O from which is obtained, by acidification with sulphuric acid, a concentrated solution of chromium sulphate reusable in the same tan-yard. The present invention provides for the precipitation of Cr(III) contained in solutions, by using magnesium hydroxide (or mixture with NaOH); the chromium-containing solution is slowly and continuously added to another solution, maintained at a temperature between 60 and 63ºC, to which is also added the neutralizing agent. Thereby, the precipitate obtained has particular characteristics of solubility and settling which cannot be obtained in a precipitate produced with other neutralizers. In the solid wastes, the oxidation is performed by stirring these chopped wastes with an aqueous solution which contains a perborate in the proportion of at least 1.5 mol of BO₃ per at-g of Cr contained in the residues (for example 2.35 g of NaBO₃ per g of Cr), during a period of time longer than 10 minutes, the recommended amount of perborate to be used, if sodic salt is used, being from 3.3 to 3.7 g of NaBO₃ per g of Cr contained in the residue to be treated and the recommeded treatment time being 45 minutes. The perborate may be substituted by a mixture of oxygenated water, H₂O₂, and a borate (for example borax) in a solution whose pH must be comprised between 7.5 and 11.5, preferably between 8.5 and 9.5.
    • 本发明涉及含铬废物从TAN-码gemäß至图(之一)的图中的积分处理。 提供了一个或两个固体(1)和/或液体(2)的流出物哪个含有铬。 该固体的流出物进行处理(4)与过硼酸(3)制造的无铬的残余物(5)所有这是通过常规方法(例如水解,以便产生树胶或chelagen)其中包含本铬和水域治疗 作为铬(VI)。 所述的Cr(VI)是通过redution在酸性介质中在还原为Cr(III)(6)。 在反应器(7)含Cr(III)的溶液的连续处理用碱性溶液(8),以得到水域小于1ppm的Cr(9)和一个纸浆(10)含Cr(OH)3.3H2O 从所有被获得,通过用硫酸,硫酸铬可重复使用的在相同的棕褐色码的浓溶液酸化。 本发明提供包含在溶液,通过使用氢氧化镁(或用NaOH的混合物)的Cr(III)的沉淀; 含铬溶液缓慢地和连续地加入到另一溶液中,维持在60和63℃之间的温度下,所有从而其中加入中和剂。 从而,所获得的沉淀物具有不能与其它中和剂产生的沉淀物来获得溶解性和沉降的具体特性。 在固体废物,氧化执行通过搅拌论文切碎的废物与wässrige溶液其中含有在BO 3中的至少1.5摩尔的比例过硼酸盐每在-G的Cr中包含的残基(对于由实施例2:35克NaBO3的 克的Cr),在一段时间超过10分钟,所使用过硼酸盐的推荐量,如果使用含钠的盐,是从3.3到每残渣中含有的克铬3.7克NaBO3的待处理 的特别建议处理时间为45分钟。 过硼酸盐可通过过氧化氢水,过氧化氢,和硼酸盐(例如硼砂)的混合物中的溶液其pH必须7.5和11.5之间被包括,优选8.5和9.5之间substituiertem。