利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.022 秒)

    Continuous aeration-batch clarification wastewater treatment
    2.
    发明授权
    Continuous aeration-batch clarification wastewater treatment 失效
    连续曝气批处理澄清废水处理

    公开(公告)号：US4952316A

    公开(公告)日：1990-08-28

    申请号：US412073

    申请日：1989-09-25

    申请人： Curtis D. Cooley

    发明人： Curtis D. Cooley

    IPC分类号： C02F3/08 ,  C02F1/28 ,  C02F3/10 ,  C02F3/12

    CPC分类号： C02F3/1215 ,  C02F3/10 ,  C02F3/1226 ,  C02F3/1263 ,  Y02W10/15

    摘要： A single-stage continuous aeration-batch clarification process for purifying wastewater containing pollutants includes the steps of continuously aerating the wastewater in the presence of biologically active solids and powdered absorbent in an aeration zone. A portion of the mixture of wastewater, biologically active solids and powdered absorbent is transferred to a settling zone where a settled solids phase and a clarified liquid phase are formed. During the settling step additional wastewater flows into the aeration zone. The clarified liquid phase is discharged from the settling zone while the settled solids phase may be returned to the aeration zone or sent to disposal.The process may be carried out with a single aeration basin and settling basin or with a plurality of aeration basins using a single settling basin.

    Process for treating caustic cyanide metal wastes
    3.
    发明授权
    Process for treating caustic cyanide metal wastes 失效
    处理苛性氰化物金属废物的方法

    公开(公告)号：US4812243A

    公开(公告)日：1989-03-14

    申请号：US254070

    申请日：1988-10-06

    申请人： Bruce L. Brandenburg ,  Curtis D. Cooley ,  Claude E. Ellis

    发明人： Bruce L. Brandenburg ,  Curtis D. Cooley ,  Claude E. Ellis

    IPC分类号： C02F1/74 ,  C02F11/08

    CPC分类号： C02F11/08 ,  Y10S210/904

    摘要： A method for operating a continuous wet oxidation system for destroying cyanide in caustic cyanide and metal wastes which scale upon heating. Raw waste is introduced into the wet oxidation reactor without heating while a mixture of heated dilution water and oxygen containing gas is introduced into the reactor by a separate inlet. The reactor is fitted with a pair of valved effluent lines and corresponding valved lines for introducing dilute mineral acid into each effluent line at system pressure. Oxidized effluent and offgases exit through a first effluent line while dilute mineral acid flows through a second effluent line into the reactor to prevent scale buildup. Periodically the flows are alternated such that oxidized effluent and offgases exit through the second effluent line and dilute mineral acid flows through the first effluent line into the reactor to remove scale. The oxidized effluent and offgases are then cooled and separated.