Biological treatment of waste water
    3.
    发明授权
    Biological treatment of waste water 失效
    生物处理废水

    公开(公告)号:US4443337A

    公开(公告)日:1984-04-17

    申请号:US352203

    申请日:1982-02-25

    CPC分类号: C02F3/121 C02F3/04 Y02W10/15

    摘要: A method for biologically purifiying waste water which produces substantially no excess waste sludge is provided. In this method, a waste water containing biodegradable substances is treated in a biological fixed film type reactor and aqueous water sludge discharged from the reactor is aerobically digested after being separated from the biologically treated waste water. The digested aqueous sludge is returned to the reactor or the upstream thereof. This method can be advantageously combined with any installed activated sludge type water purification process, to thereby substantially eliminate the production of excess waste sludge from the water purification system.

    摘要翻译: 提供了一种生物净化废水的方法,该方法基本上不产生多余的废污泥。 在该方法中,在生物固定膜型反应器中处理含有生物降解性物质的废水,从生物处理废水中分离后,将从反应器排出的含水水泥进行有氧消毒。 消化的水性污泥返回到反应器或其上游。 该方法可以有利地与任何已安装的活性污泥型水净化方法组合,从而基本上消除了来自水净化系统的过量废渣的产生。