Process and reactor for water treatment using a granular bed adapted to
float during cleaning
    1.
    发明授权
    Process and reactor for water treatment using a granular bed adapted to float during cleaning 失效
    使用适于在清洁期间漂浮的颗粒床进行水处理的工艺和反应器

    公开(公告)号:US5252231A

    公开(公告)日:1993-10-12

    申请号:US812119

    申请日:1991-12-23

    摘要: A process for the treatment of water using a granular bed (3) of granular support materials of a volumic mass less than that of the water to be treated. According to this process, each washing cycle comprises interrupting the withdrawal of treated water and stopping the feed of water to be treated in such a manner that the granular bed (3) floats in a given volume VL of water, admitting cleansing air into the reactor for assuring agitation of the floating bed, interrupting the admission of air in order to permit a separation of the granular materials and sediment by their difference in volumic mass, with decantation of said sediment and flotation of said materials, and evacuating the sediments at the base of the reactor as well as the water contained therein for evacuating the granular bed (3).

    摘要翻译: 一种使用粒状载体材料的颗粒床(3)来处理水的方法,所述粒状载体材料的体积质量小于待处理的水的体积。 根据该方法,每个洗涤循环包括中断处理水的抽出并停止待处理的水的供给,使得颗粒床(3)漂浮在给定体积的VL水中,允许清洁空气进入反应器 为了确保浮床的搅动,中断空气的入口,以便允许颗粒状物质和沉积物通过其体积质量的差异分离,所述沉淀物的倾析和所述材料的浮选,并将基底的沉积物排出 的反应器以及其中包含的用于抽空颗粒床(3)的水。

    Method for purifying waste water using activated slude to increase
purification yields
    2.
    发明授权
    Method for purifying waste water using activated slude to increase purification yields 失效
    使用活化的废料净化废水以提高净化产率的方法

    公开(公告)号:US5759403A

    公开(公告)日:1998-06-02

    申请号:US507390

    申请日:1996-05-29

    摘要: The invention concerns a process for increasing the purification yield in the activation tank of a station for the purification of waste waters employing the so-called "activated sludge" process. According to the invention, talc, pyrophyllite, kaolin or mica, possibly cationized, are added to the biomass, these having a particle size less than 100 .mu.m in quantities of up to 2.0 g per liter of waste waters. A great improvement in solid/liquid separation is observed at the outlet from the activation tank as well as an increase in the purification yield for carbonaceous pollution, nitrogenous pollution and phosphate-containing pollution even when the station operates at medium or high load.

    摘要翻译: PCT No.PCT / EP94 / 00813 Sec。 371日期:1996年5月29日 102(e)日期1996年5月29日PCT 1994年3月10日PCT公布。 第WO94 / 20425号公报 日期1994年9月15日本发明涉及使用所谓的“活性污泥”方法提高净化废水的站的活化罐中的纯化产率的方法。 根据本发明,将可能阳离子化的滑石,叶蜡石,高岭土或云母添加到生物质中,这些具有小于100微米的粒度,其量为每升废水高达2.0g。 在活化槽的出口处观察到固/液分离的显着改善,即使在中等或高负荷下运行时,碳质污染,含氮污染和含磷酸盐污染的净化产量也增加。

    Process for production of granular material for water treatment
    3.
    发明授权
    Process for production of granular material for water treatment 失效
    水处理颗粒物的生产工艺

    公开(公告)号:US4915884A

    公开(公告)日:1990-04-10

    申请号:US167587

    申请日:1988-03-14

    摘要: A granular water treatment material and a process for the production thereof, the material being in the form of spherical granules, each having a thermoplastic polymeric matrix (1) and a more dense adjuvant in the form of micro-grains (3) dispersed in the matrix; each granule has on the surface a porosity in the form of micro-cavities (4) and cationic hydrophilic sites distributed on the surface; the process includes providing a mixture of an oxidizable thermoplastic resin and an adjuvant in powdered form, heating the mixture to make it plastic, extruding the plastic material to a diameter corresponding to the size of the granules to be obtained and cutting the extrusions to a length equal to this diameter, achieving a beading of the extruded pieces, oxidizing the surface of the spherical granules thus obtained, then ionically grafting a cationic polyelectrolyte to the surface of said granules.

    摘要翻译: 一种颗粒状水处理材料及其制造方法,该材料为球形颗粒形式,各自具有热塑性聚合物基质(1)和分散在该颗粒中的微粒(3)形式的更致密的佐剂 矩阵; 每个颗粒在表面上具有微孔(4)形式的孔隙和分布在表面上的阳离子亲水性位点; 该方法包括以粉末形式提供可氧化热塑性树脂和佐剂的混合物,加热混合物以使其成为塑料,将塑料材料挤出至与要获得的颗粒尺寸相对应的直径,并将挤出物切割成长度 等于该直径,实现挤出片的珠粒,氧化由此获得的球形颗粒的表面,然后将阳离子聚电解质离子接枝到所述颗粒的表面。