Production of Phosphate Compounds from Materials Containing Phosphorus and at Least One of Iron and Aluminium
    54.
    发明申请
    Production of Phosphate Compounds from Materials Containing Phosphorus and at Least One of Iron and Aluminium 有权
    从含磷和至少一种铁和铝的材料生产磷酸盐化合物

    公开(公告)号:US20160060113A1

    公开(公告)日:2016-03-03

    申请号:US14888232

    申请日:2014-11-02

    IPC分类号: C01B25/32 C01B25/36

    摘要: A method for concentration of phosphate compounds comprises dissolving (205) of sludge ash in hydrochloric acid. Insoluble residues are separated (210), thereby forming a first leach solution. A mole ratio of phosphorus to a sum of ferric iron and aluminium in the first leach solution is controlled (215) to be larger than 1. A base is added (220) to the first leach solution in an amount causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed (225) from the first leach solution. Sulphuric acid is added (240) to the first leach solution, causing precipitation of sulphate compounds. The precipitated sulphate compounds are separated (245) from the first leach solution. At least a part of the leach solution is recycled (248) as the hydrochloric acid used for the dissolving of sludge ash. Further methods for processing the precipitated phosphate compounds are presented as well as arrangements for performing the methods.

    摘要翻译: 磷酸盐化合物的浓缩方法包括将淤泥灰(205)溶解在盐酸中。 不溶性残渣分离(210),从而形成第一浸出溶液。 控制第一浸出溶液中磷与铁和铝之和的摩尔比(215)大于1.将碱加入到第一浸出溶液中,其量使磷酸盐化合物沉淀。 从第一浸出溶液中除去沉淀的磷酸盐化合物(225)。 向第一浸出溶液中加入硫酸(240),导致硫酸盐化合物的沉淀。 沉淀的硫酸盐化合物与第一浸出溶液分离(245)。 浸出溶液的至少一部分被循环(248)作为用于溶解污泥灰的盐酸。 提出了处理沉淀的磷酸盐化合物的其它方法以及用于进行该方法的布置。

    Method of preparing adsorbent for phosphorus adsorption and adsorbent prepared by the same
    56.
    发明申请
    Method of preparing adsorbent for phosphorus adsorption and adsorbent prepared by the same 有权
    制备磷吸附剂吸附剂及其制备方法

    公开(公告)号:US20160023184A1

    公开(公告)日:2016-01-28

    申请号:US14444976

    申请日:2014-07-28

    摘要: The present invention relates to a method for preparing an adsorbent for phosphorus adsorption and an adsorbent prepared by the method. More specifically, the present invention is based on the fact that phosphorus has a strong affinity for the surface of metal oxides or hydroxides, and relates to a method for preparing an adsorbent for phosphorus adsorption, which comprises absorbing and coating expanded vermiculite with aluminum and heating the coated vermiculite at high temperature to produce aluminum oxide on the surface of the expanded vermiculite so that the adsorption of phosphorus at the coordination of the oxide can be achieved with very high efficiency by a strong attraction between phosphorus ions and aluminum ions, and to an adsorbent prepared by the method.

    摘要翻译: 本发明涉及一种磷吸附吸附剂的制备方法和该方法制备的吸附剂。 更具体地说,本发明是基于磷对金属氧化物或氢氧化物的表面具有强亲和力的事实,涉及磷吸附吸附剂的制备方法,该方法包括用铝吸收和涂覆膨胀的蛭石并加热 涂覆的蛭石在高温下在膨胀的蛭石的表面上产生氧化铝,使得可以通过磷离子和铝离子之间的强吸引力以非常高的效率实现磷在氧化物配位处的吸附, 通过该方法制备的吸附剂。

    ULTRAVIOLET RADIATION PRE-TREATMENT OF WASTEWATER, IMPROVING ITS UTILITY FOR ALGAL CULTIVATION
    60.
    发明申请
    ULTRAVIOLET RADIATION PRE-TREATMENT OF WASTEWATER, IMPROVING ITS UTILITY FOR ALGAL CULTIVATION 审中-公开
    超声波辐射预处理废水,改善其对ALGAL生长的实用性

    公开(公告)号:US20150275166A1

    公开(公告)日:2015-10-01

    申请号:US14667893

    申请日:2015-03-25

    摘要: The present invention relates to a process of remediating wastewaters, preferably agricultural wastewaters resulting from animal production or contained animal feeding operation sites. The water is treated to promote assimilation of nutrients into algal biomass, which can be harvested and sold, and the resultant wastewater is then purified. According to the invention, short wavelength UV radiation (less than 280 nm wavelength) is used to pretreat wastewater, with the dose determined by absorbance of the water, not by bacterial load. Pretreated water exhibits changes in chromophoric dissolved organic matter that allows for improved and increased algae production by as much as 88%.

    摘要翻译: 本发明涉及一种补救废水,优选由动物生产产生的农业废水或含有动物饲养操作场所的方法。 处理水以促进营养物质同化到藻类生物质中,其可以被收获和销售,然后纯化所得废水。 根据本发明,使用短波长紫外辐射(小于280nm波长)来预处理废水,其剂量由水的吸光度决定,而不是细菌负荷。 预处理的水表现出发色体溶解的有机物质的变化,允许藻类生产的提高和增加高达88%。