• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A two-stage sludge process for the purification of sewage. The process is less sensitive than those of the prior art but, nevertheless, succeeds in reducing the aeration time. The sewage is supplied to a higher loaded first activation stage, the sewage treated therein undergoes an intermediate settlement accompanied by the removal of sludge in the form of return sludge and surplus sludge, the intermediately settled sewage is fed to a lower loaded activation stage compared with the first activation stage and following final settling the material therefrom is drained off in pure form, wherein all the sewage is fed to a first aerated activation stage which is operated as a maximum load stage with a space load BR of approximately 10 kg BOD5/m3/day and a sludge load BTS of at least 2 kg BOD5/kg of dry substance/day, by intermediate settling of the sewage sludge mixture removed from the first stage a strict separation of the biocenoses of the two activation stages is ensured, whereby sufficient surplus sludge is removed from the intermediate settling stage that the age of the sludge is kept low, the intermediately settled sewage being fed to a second aerated activation stage which is operated as a low load stage.
    公开号:SU793374A3
    申请号:SU772522949
    申请日:1977-09-09
    公开日:1980-12-30
    发明作者:Бенке Бото；Диринг Бернд
    申请人:Машиненфабрик В.Хуберт Унд Ко.Б.В. (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to methods for the biochemical treatment of wastewater, in particular to a method for the treatment of wastewater in aerotanks. The known method of sewage treatment is that one part of the sewage is subjected to highly loaded aeration, and another low-loaded aeration, and the silt mixture of high-load and non-loaded aeration is separately fed for clarification and subsequent removal of purified water and recycled active sludge to the high-load stage aeration and low-load aeration, respectively, and essential activated sludge of high-load aeration is fed to low-load aeration. However, in the process by a known method, the degree of wastewater treatment is not high enough. Closest to the described technical essence and the achieved effect is the method of sewage treatment, which consists in passing the sewage through the high load aeration, intermediate clarification, low load aeration and additional clarification, and one part of the active sludge intermediate light is fed to the high load aeration, and another part removed from the system, and a part of the activated sludge of additional clarification is fed to low-load aeration, part to high-loaded aeration, and the remainder is output from the system, the degree of purity of waste water was 97% and the total energy consumption for biological stages - 47 W / 1 resident in one day. The disadvantage of this method is relatively high envrozatraty. The purpose of the invention is to reduce energy consumption with a similar degree of purification. This is achieved by the described sewage treatment method, which consists in passing the sewage through the stages of highly loaded aeration, intermediate clarification, low loaded aeration and additional clarification, recycling active sludge from the intermediate effluent to highly aerated aeration, and from additional light to the radar from the intermediate sludge to the highly loaded aeration, and from additional light to the radar from the intermediate sludge to the highly loaded aeration, and from additional light to the body of the sludge from the intermediate sludge to the highly loaded aeration, and from the additional clear to the bottom of the body. removal of excess sludge from the intermediate stage
     t
    权利要求:
    Claims (3)
    [1]
    793374, Horo and additional clarification of the system, with highly loaded aeration being carried out with a volume load of 8–12 kg for biological oxygen consumption per 1 m per day, a load of 2–20 kg for biological consumption of oxygen for 1 kg of a dry substance per day and at age; silt 0.10, 4 days. Example. The pipeline pumped 1250 wastewater. containing an average of 300 mg / l of precipitating coarse substances, 150 mg / l of non-precipitating coarse substances, 240 mg / l of organic carbon and 40 mg / l of ammonium nitrogen for preliminary mechanical cleaning. The coarse sludge obtained at this stage is diverted through a pipeline and then fed to a highly loaded aeration, which is carried out with a volume load of 10 BODi / m Biological oxygen consumption (BOD) per day, a load of sludge 5 kg of dry matter per day and age sludge 0,2 days The consumption of oxygen is 1.5-1 day. After an average residence time of 30 minutes at this stage, the wastewater is fed to intermediate clarification, which passes on average for 90 minutes. The sludge obtained at this stage is discharged. At that, 25% of sludge (in terms of inflow under dry weather) is recycled to the stage of highly loaded aeration, and the remainder is removed from the system. The clarified phase is fed to a low-load aeration. which is carried out with a volume load of 1.0 kg per day and a load of sludge 0.3 kg of dry matter per day. Here, the oxygen consumption is 1.12 days. After an average residence time of 120 minutes, the wastewater is fed to additional clarification, which takes an average of 240 minutes. The sludge obtained at the stage of additional clarification is removed, 70% of sludge (in terms of inflow during dry weather) is recycled to the stage of low-load aeration, and the remainder is removed from the system. The clarified phase is withdrawn to the filtration stage. The hourly otod is 1250 m of effluent water with a degree of origin of 97.5%. The total energy consumption in biological stages is 5 W per 1 inhabitant per day. PRI me R
    [2]
    2. The example is repeated, with the difference that highly aggravated aeration is carried out with a volume load of 8 kg for 1 day, loading of sludge with 2 kg of dry matter, in 1 day and age of sludge 0.1 n. At the same time hourly tap t 1250m. accurate water with a purity of 97%. The total energy consumption at biological stages is 28 W per 1 person per day. Example
    [3]
    3. Example 1 is repeated, with the difference that high-load aeration is carried out with a volume load of 12 kg BPKd / m per day, a load of 20 kg of sludge (dry matter per day) and a sludge age of 0.4 days. In this case, 1250 m of wastewater with a purity level of 98% is discharged hourly, and the total energy consumption in biological stages is 32 W / 1 inhabitant per day. CLAIMS A method for biological treatment of sewage, water, comprising treating the waste water highly loaded aeration step, an intermediate clarification, nizkonagruzhennoy aeration and secondary clarification, with recirculation of the activated sludge from the intermediate clarification in heavily aerated and of additional clarification on nizkonagruzhennuyu aeration and discharge of excess sludge from intermediate and additional clarification, characterized in that, in order to reduce energy consumption with a similar degree of purification, Highly charged aeration is carried out with a volume load of 8–12 kg for biological oxygen consumption per 1 m per day, a load of sludge 2–20 kg for biological oxygen consumption per 1 kg of dry matter per day and for age of 0.1–0.4 days .
    类似技术:
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    同族专利:
    公开号 | 公开日
    YU208777A|1982-06-30|
    DE2640875C3|1983-01-20|
    SE7710169L|1978-03-11|
    FI70566B|1986-06-06|
    DE2640875A1|1978-03-16|
    TR19761A|1979-11-30|
    CS213327B2|1982-04-09|
    FR2364183B1|1984-06-29|
    AT364799B|1981-11-10|
    PL121946B1|1982-06-30|
    SE429230B|1983-08-22|
    BE858431A|1978-03-06|
    CA1084639A|1980-08-26|
    FI772657A|1978-03-11|
    FI70566C|1986-09-24|
    DE2640875B2|1980-10-16|
    PL200767A1|1978-05-22|
    GR66391B|1981-03-20|
    ATA609077A|1981-04-15|
    NL7709433A|1978-03-14|
    JPS5335263A|1978-04-01|
    IT1087505B|1985-06-04|
    ES462196A1|1978-08-16|
    FR2364183A1|1978-04-07|
    YU39817B|1985-04-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH427674A|1964-03-10|1966-12-31|Cellulosefabrik Attisholz Ag V|Process for the biological purification of domestic waste water using the activated sludge process|
    DE1658112C3|1967-08-11|1973-11-08|Passavant-Werke Michelbacher Huette, 6209 Aarbergen|Process and system for biological wastewater treatment after the activation process, in particular for full biological cleaning|
    US3764523A|1972-05-01|1973-10-09|Union Carbide Corp|Nitrification of bod-containing water|DE2803759C3|1978-01-28|1983-01-13|Böhnke, Botho, Prof. Dr.-Ing.|Two-stage system for the treatment of wastewater according to the activated sludge process|
    DE2911623C2|1979-01-19|1983-10-27|Böhnke, Botho, Prof. Dr.-Ing., 5100 Aachen|Plant for the treatment of wastewater according to the activated sludge process|
    DE2816390C2|1978-04-15|1983-10-06|Boehnke, Botho, Prof. Dr.-Ing., 5100 Aachen|Plant for the treatment of wastewater according to the activated sludge process with several stabilization ditches|
    DE3007782A1|1980-02-29|1981-09-17|Linde Ag, 6200 Wiesbaden|METHOD AND DEVICE FOR BIOLOGICAL WASTE WATER TREATMENT|
    DE3015515A1|1980-04-23|1981-10-29|Klaus Dr.-Ing. 5100 Aachen Pöppinghaus|METHOD FOR OBTAINING PROTEIN-BASED ANIMAL FEED|
    DE3117805A1|1981-05-06|1982-11-25|Böhnke, Botho, Prof. Dr.-Ing., 5100 Aachen|Plant for purifying waste water|
    DE3141889C2|1981-10-22|1984-05-30|Böhnke, Botho, Prof. Dr.-Ing., 5100 Aachen|Method for operating a pond aeration system|
    DE3317371C1|1983-05-13|1984-10-31|Böhnke, Botho, Prof. Dr.-Ing., 5100 Aachen|Process for the purification of waste water in plants with adsorption stage|
    DE3405236C2|1984-02-15|1986-08-14|Botho Prof. Dr.-Ing. 5100 Aachen Böhnke|Plant for the purification of wastewater as well as for the treatment of the resulting sludge|
    DE3438198C2|1984-10-18|1987-10-22|Boehnke, Botho, Prof. Dr.-Ing., 5100 Aachen, De|
    DE3508301C1|1985-03-08|1986-07-17|Böhnke, Botho, Prof. Dr.-Ing., 5100 Aachen|Process for purifying waste water|
    DE3518623A1|1985-05-23|1986-11-27|Herbert 6901 Mauer Kowa|METHOD AND DEVICE FOR REDUCING ORGANIC INGREDIENTS IN WASTE AND / OR WASTEWATER|
    DE3531178C2|1985-08-31|1989-03-09|Botho Prof. Dr.-Ing. 5100 Aachen De Boehnke|
    DE3543432A1|1985-12-09|1987-06-11|Fraunhofer Ges Forschung|PLANT FOR THE BIOLOGICAL TREATMENT OF WASTEWATER|
    US4780208A|1986-08-29|1988-10-25|Botho Bohnke|Process for purification of effluent|
    DE4036548C2|1990-11-16|1995-12-07|Boehnke Botho|Process for the purification of wastewater with the help of a wastewater treatment plant which has two activation stages|
    AT396684B|1991-08-06|1993-11-25|Norbert Dipl Ing Dr Te Matsche|Activated sludge process for the purification of waste water|
    DE4204955C2|1992-02-19|1996-10-17|Tecon Gmbh|Process for removing nitrogen and carbon compounds from waste water|
    DE4223285A1|1992-07-15|1994-01-20|Sued Chemie Ag|Denitrification of waste water with a nitrate content - by mixing with activated sludge and organic sludge|
    DE4415637C2|1994-05-04|1998-08-06|Wap Reinigungssysteme|Method and device for clarifying and treating wash water from vehicle wash systems|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2640875A|DE2640875C3|1976-09-10|1976-09-10|Two-stage activated sludge process for cleaning wastewater|
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