SU981251A1

SU981251A1 - Hydrocyclone stabilizer and biological filter

Info

Publication number: SU981251A1
Application number: SU813285662A
Authority: SU
Inventors: Евгений Андреевич Стахов; Виктор Яковлевич Чечель
Priority date: 1981-05-04
Filing date: 1981-05-04
Publication date: 1982-12-15

Description

Изобретение относится к комбинированным средствам биологической очистки бытовых и близким к ним по составу производственных сточных вод, .состоящим из биофильтров и устройств для минерализаций осадка. ⁵ The invention relates to combined means of biological treatment of household and close to them in the composition of industrial wastewater, consisting of biofilters and devices for mineralization of sludge. ⁵

Известно устройство для биохимической очистки сточных вод, представляющее собой капельный биофильтр, установленный над емкостью для аэрации и отстаивания осадка. Сточная вода после предварительной механической очистки проходит биофильтр И вместе с выносимой биопленкой попадает в емкость для аэрации и отстаивания осадка. Воз-₅дух, подаваемый в емкость для аэрации, по специальным патрубкам в дальнейшем направляется на вентиляцию биофильтра Г1].A device for biochemical wastewater treatment is known, which is a drip biofilter mounted above a tank for aeration and sedimentation of sediment. Waste water after preliminary mechanical treatment passes the biofilter And, together with the removed biofilm, enters the tank for aeration and sedimentation of sediment. _WHO-5 spirit supplied to the aeration tank, at special nozzles directed for further ventilation biofilter G1].

Недостатки известной установки еле-го дующие: необходимость использования воздуходувного оборудования для аэрирования жидкости; изъятие органических загрязнений из сточных вод осу2 ществляется на малопроизводительном' капельном биофильтре; ограждающие элементы биофильтра имеют непосредственный, контакт с наружным воздухом, что снижает эффект его работы в холодное время года при размещении вне отапливаемого помещения; возможность образования застойных зон в емкости для аэрирования и отстаивания осадка, имеющей прямоугольную форму.The disadvantages of the known installation are hardly blowing: the need to use blowing equipment for aeration of the liquid; organic pollutants are removed from wastewater2 using a low-productivity drip biofilter; the enclosing elements of the biofilter have direct contact with the outside air, which reduces the effect of its operation in the cold season when placed outside a heated room; the possibility of the formation of stagnant zones in the tank for aeration and sedimentation of sediment having a rectangular shape.

Известно устройство для биохимичес-. кой очистки сточных вод - биофильтрстабилизатор . Биофильтр-стабилизатор состоит из высоконагружаемого биофильтра с рулонной пластмассовой загрузкой и расположенного под ним резервуара, который разделен на зону стабилизации и зону отстаивания. Потребное количество растворенного кислорода в жидкости регулируется интенсивностью орошения загрузки биофильтра и обеспечивается за. счет рециркуляции иловой смеси с помощью центробежного насоса. . Продолжительность стабилизации биомас· сы 10 сут. Концентрация биомассы 8 стабилизаторе 6-8 г/л Г 2J.A device for biochemical. Wastewater treatment - biofiltration stabilizer. The biofilter-stabilizer consists of a high-load biofilter with a plastic roll and a reservoir located under it, which is divided into a stabilization zone and a settling zone. The required amount of dissolved oxygen in the liquid is regulated by the irrigation intensity of the biofilter loading and is provided for. recirculation of the sludge mixture using a centrifugal pump. . The duration of biomass stabilization is 10 days. The concentration of biomass 8 stabilizer 6-8 g / l G 2J.

Недостатками этого биофильтра-стабилизатора' являются значительные габариты сооружения, обусловленные пле- $ ночными процессами массопередачи (аэрация жидкости), что затрудняет его применение в стесненных условиях; непосредственный контакт с наружным воздухом ограждающих элементов биофильт- 10 ра, что ухудшает температурный режим его работы, а следовательно, и эффект очистки в холодное время года при размещении сооружения вне отапливаемого помещения; образование застойных зон is в стабилизаторе из-за неравномерности всасывания осадка циркуляционным нассу-^!сом из камеры осаждения, что приводит’, к снижению эффекта работы сооружения.The disadvantages of this biofilter-stabilizer 'are the significant dimensions of the structure, due to the mass transfer processes at night (fluid aeration), which makes it difficult to use in cramped conditions; direct contact with the outside air of the biofilter-10 ra enclosing elements, which worsens the temperature regime of its operation, and therefore the cleaning effect in the cold season when the structure is placed outside the heated room; the formation of stagnant zones is in the stabilizer due to uneven absorption of sediment by circulation nassou ^! som from the deposition chamber, which leads to a decrease in the effect of the construction.

Целью изобретения является повышение эффективнос+и работы стабилизатора-биофильтра путем увеличения концентрации активного ила и окислительной мощности.The aim of the invention is to increase the efficiency + and the operation of the stabilizer-biofilter by increasing the concentration of activated sludge and oxidative power.

Указанная цель достигается тем, 25 что гидроциклонный стабилизатор-биофильтр со струйной аэрацией, содержащий цилиндрический резервуар с камерами стабилизации и отстаивания, биофильтр, патрубки ввода исходной и вы- ₃₀вода обработанной жидкости, циркуляционный насос, снабжен коаксиально установленными в резервуаре и не доходящими до его днища цилиндроконической перегородкой и трубой, при этом биофильтр размещен в трубе, ка- ³⁵мера отстаивания - между трубой и перегородкой, камера стабилизации - между перегородкой и стенками резервуара, а также дополнительными патрубками ввода исходной жидкости, одна часть которых расположена тангенциально в нижней части камеры стабилизации на уровне ввода жидкости в камеру отстаивания; другая - в камере стабилизации под углом 60° к поверхности жид- ⁴⁵кости.This object is achieved in that the hydrocyclone 25 Stabilizer-biofilter with jet aeration, comprising a cylindrical reservoir with stabilization and settling chambers biofilter nozzles input source and the water ₃₀ You are a treated liquid, a circulation pump is provided coaxially mounted in the tank and does not extend up to its bottom of cylindrical baffle and the tube, wherein the biofilter is placed in the pipe ³⁵ Ka settling measure - between the pipe and the baffle, stabilization chamber - between the partition and the tank wall, and akzhe additional input source liquid nozzles, one of which is tangential to the bottom of the chamber to stabilize the liquid level entering a settling chamber; another - in the stabilization chamber at an angle of 60 ° to the liquid surface ⁴⁵ of bone.

Свободно истекающие струи иловой смеси под напором циркуляционного насоса , кроме создания вместе с затопленными струями горизонтально-круго- ⁵⁰вого движения жидкости в камере стабилизации, вовлекают и дробят воздух, чем обеспечивают насыщение жидкости кислородом, который необходим для аэробной стабилизации осадка. ^s5 Available expiring jet under pressure mixed liquor circulation pump, besides making with submerged jets of horizontal circular motion ⁵⁰ Vågå stabilization fluid in the chamber, and the air is crushed involve than provide oxygenation of the liquid, which is required for the aerobic sludge stabilization. ^s5

Горизонтально-круговое движение жидкости в камере стабилизации исключает образование застойных зон и-под действием центробежной силы создает условия для уплотнения активного ила в периферийной области, (возле наружной стенки камеры стабилизации ).и .The horizontal circular motion of the liquid in the stabilization chamber eliminates the formation of stagnant zones and, under the action of centrifugal force, creates conditions for compaction of activated sludge in the peripheral region (near the outer wall of the stabilization chamber). And.

уменьшения концентрации активного ила 3“ во внутренней зоне (на входе в гравитационный отстойник, возле его стенки ), что способствует более полному осветлению воды в гравитационном от10 стойнике перед подачей ее на биофильтр. Центробежное уплотнение позволяет увеличить концентрацию активного ила в стабилизаторе в целом и^•следовательно, повысить окислительную мощность и уменьшить его размеры.decrease in the concentration of activated sludge 3 “in the inner zone (at the entrance to the gravity settler, near its wall), which contributes to a more complete clarification of water in the gravity settler before feeding it to the biofilter. Centrifugal compaction allows increasing the concentration of activated sludge in the stabilizer as a whole and, therefore, increasing the oxidizing power and reducing its size.

На фиг. 1 показана схема работы гидроциклонного стабилизатора-биофильтра со струйной аэрацией в составе очистной станции; на фиг. 2 - раз20 рез А-А на фиг. 1.In FIG. 1 shows a diagram of the operation of a hydrocyclone stabilizer-biofilter with jet aeration as part of a treatment plant; in FIG. 2 - time 20 cut AA in FIG. 1.

Гидроциклонный стабилизатор-биофильтр со струйной аэрацией ,имеет цилиндрический корпус 1, в центре которого расположен биофильтр 2 с водох 25 распределительным устройством 3 и колосниковой решеткой 4 для поддержания пластмассовой загрузки, кольце. вую перегородку 5 с коническим окончанием 6 образующую со стенкой био30 фильтра гравитационный отстойник 7, а с корпусом сооружения - камеру стабилизации 8, впускные патрубки 9 затопленных струй, расположенные тангенциально,к корпусу стабилизатора 35 на уровне входа жидкости в гравитационный отстойник, аэраторы 10 для истечения свободных струй, расположенные над поверхностью жидкости в камере стабилизации под углом до 60°, цир40 куляционный насос 11 с напорным 12 и всасывающим 13 трубопроводами, расположенный в насосной.станции 14 с приемным резервуаром 15» расположенную тангенциально к корпусу стабилизато45 ра трубу 16 для выпуска циркулирующей смеси из камеры стабилизации в приемный резервуар насосной станции через приемный колодец 17 и трубу 18, в который одновременно поступают ис_м ходная сточная вода по трубопроводу и осадок из вторичного отстойника по трубопроводу 21, сборный канал . 22 для отвода жидкости из биофильтра во вторичный отстойник и вентиляции биофильтра, трубу 23 для периодичес^S5 кого выпуска стабилизированного осадка.The hydrocyclone stabilizer-biofilter with jet aeration has a cylindrical body 1, in the center of which there is a biofilter 2 with water 25 dispenser 3 and grate 4 to support the plastic load ring. a baffle 5 with a conical end 6 forming a gravity settler 7 with a bio30 filter wall and a stabilization chamber 8 with a building body, inlet nozzles 9 of flooded jets located tangentially to the stabilizer body 35 at the level of liquid inlet into the gravity tank, aerators 10 for outflow free jets located above the surface of the liquid in the stabilization chamber at an angle of up to 60 °, circulating pump 40 with pressure 12 and suction 13 pipelines located in the pumping station 14 with a receiver uarom 15 "positioned tangentially to the housing stabilizato45 ra pipe 16 for discharging the circulating mixture from the stabilization chamber into a receiving tank pump station through the sump 17 and pipe 18, in which simultaneously receives uc _m Khodnev waste water through conduit and sediment from the secondary clarifier through line 21 assembly channel. 22 for draining the fluid from the biofilter to the secondary sump and venting the biofilter, a pipe 23 for periodically ^S5 release of stabilized sediment.

Гидроциклонный стабилизатор-биофильтр со струйной аэрацией работает следующим образом.Hydrocyclone stabilizer-biofilter with jet aeration works as follows.

Сточная вода из канализационной сети по трубопроводу 19 поступает в приемный резервуар 15, откуда циркуляционным насосом 11 по всасывающему 13 и напорному 12 трубопроводам подается в камеру стабилизации 8 иловой смеси через патрубки 9 затопленных струй и аэраторы 10 свободных струй. С помощью указанных струй в камере стабилизации происходит перемешивание жидкости путем создания горизонтальнокругового движения, образованию которого также способствует тангенциально расположенная к корпусу стабилизатора выпускная труба 16, предназначенная для выпуска циркулирующей иловой смеси из камеры стабилизации в приемный резервуар 15 насосной станции 14 через приемный колодец 17 и трубу 18. Свободно истекающие из аэраторов струиЗО • жидкости, кроме создания горизонтально-кругового движения иловой смеси в камере стабилизации, обеспечивают, также насыщение жидкости воздухом (кислородом), который необходим для аэроб- 25 ной стабилизации осадка.' Горизонталь- . HQ-круговое движение иловой смеси создает в камере стабилизации под действием центробежных сил условия для уплотнения (повышения дозы активного ' ила) в периферийной области и уменьшения концентрации иловой смеси во внутренней области на входе в гравитационный отстойник 7, куда жидкость поступает после камеры стабилизации. . Осветленная жидкость из гравитационного отстойника через водораспредели- • тельное устройство 3 поступает на биофильтр 2, где завершается процесс биологической очистки сточных вод. Первичная стадия биологической очистки жидкости происходит при подаче исходной сточной воды в приемный резервуар^насосной станции и затем в камере стабилизации,в которых протекает биог сорбция значительной части (до 50-70%) органических загрязнений сточных вод.;Wastewater from the sewer network through a pipe 19 enters a receiving tank 15, from where it is supplied by a circulation pump 11 through a suction 13 and a pressure pipe 12 to the stabilization chamber 8 of the sludge mixture through nozzles 9 of flooded jets and 10 free jets aerators 10. Using these jets in the stabilization chamber, the liquid is mixed by creating a horizontal circular motion, the formation of which is also promoted by the outlet pipe 16 tangentially located to the stabilizer body, designed to discharge the circulating sludge mixture from the stabilization chamber to the receiving tank 15 of the pump station 14 through the receiving well 17 and the pipe 18. Free-flowing outlets from the aerators of ZO • liquids, except for creating a horizontal circular motion of the silt mixture in the stabilization chamber, o they also ensure that the liquid is saturated with air (oxygen), which is necessary for aerobic stabilization of the sediment. ' Horizontal. The HQ-circular motion of the sludge mixture creates conditions in the stabilization chamber under the action of centrifugal forces for compaction (increasing the dose of activated sludge) in the peripheral region and a decrease in the concentration of the sludge mixture in the inner region at the entrance to the gravity settler 7, where the liquid flows after the stabilization chamber. . The clarified liquid from the gravity sump through the water distribution device 3 • enters the biofilter 2, where the biological wastewater treatment process is completed. The primary stage of biological treatment of the liquid occurs when the initial wastewater is supplied to the receiving tank of the pumping station and then to the stabilization chamber, in which biosorption of a significant part (up to 50-70%) of organic wastewater contaminants proceeds .;

Предлагаемый стабилизатор-биофильтр обладает следующими преимуществами: имеет наиболее эффективную технологию предварительной очистки сточной воды перед биофильтром, основанную на использовании биосорбции центробежного уплотнения иловой смеси, возникающего при горизонтально-круговом движении жидкости в камере стабилизации,The proposed stabilizer-biofilter has the following advantages: it has the most effective technology for pre-treatment of wastewater before the biofilter, based on the use of biosorption of centrifugal compaction of the sludge mixture that occurs during horizontal circular motion of the liquid in the stabilization chamber,

98125’ 6 и последующего осветления смеси в гравитационном отстойнике, что приводит к уменьшению размеров биофильтра;· горизонтально-круговое движение жидкости исключает образование застойных зон в камере стабилизации, что улучшает Эффект очистки сточных вод; центробежное уплотнение иловой смеси в камере стабилизации позволяет в целом увеличить дозу активного иле в аэробном стабилизаторе, а следовательно, повысить окислительную мощность и уменьшить его размеры; исключается непосредственный контакт ограждающих конструкций биофильтра с наружным воздухом, что улучшает температурный режим его работы, а следовательно, и эффект очистки в холодное время года при размещении сооружения вне отапливаемого помещения.98125 ’6 and subsequent clarification of the mixture in the gravity sump, which leads to a decrease in the size of the biofilter; · horizontal-circular movement of the liquid eliminates the formation of stagnant zones in the stabilization chamber, which improves the effect of wastewater treatment; centrifugal compaction of the sludge mixture in the stabilization chamber allows, on the whole, to increase the dose of activated sludge in the aerobic stabilizer, and therefore, increase the oxidative power and reduce its size; Direct contact of the biofilter enclosing structures with the outside air is excluded, which improves the temperature regime of its operation, and, consequently, the cleaning effect in the cold season when the structure is placed outside a heated room.

Claims

(5) HYDROCYCLING STABILIZER-BIOFILTER WITH JET AERATION The invention relates to a combination of biological means for cleaning household water and close to them in the composition of industrial wastewater, consisting of biofilters and devices for mineralizing sludge. A device for the biochemical treatment of wastewater is known, which is a droplet biofilter mounted above the tank for aeration and sedimentation. After mechanical cleaning, the waste water passes through the biofilter and, together with the bioformed bio-gas, it enters the tank for aeration and sedimentation. The air supplied to the tank for aeration through special nozzles is further directed to the ventilation of the biofilter GH. The disadvantages of the known installation are the following: the need to use blower equipment for aerating the liquid; removal of organic pollutants from wastewater is carried out on an inefficient droplet biofilter; the enclosing elements of the biofilter have direct contact with the outside air, which reduces the effect of its operation during the cold season when placed outside a heated room; the possibility of formation of stagnant zones in the tank for aeration and settling of the precipitate having a rectangular shape. A device for biochemical wastewater treatment is known as a biofilter stabilizer. The biofilter-stabilizer consists of a high-loading biofilter with a rolled plastic load: and a reservoir located under it, which is divided into a stabilization zone and a sedimentation zone. The required amount of dissolved oxygen in the liquid is controlled by the irrigation intensity of the loading of the biofilter and is provided for. recirculation of the sludge mixture using a centrifugal pump. . The duration of stabilization of biomas3981 sy 10 days. The concentration of biomass in the stabilizer is 6-8 g / lG2J. The disadvantages of this biofilter-stabilizer are the considerable dimensions of the structure, due to the film processes of mass transfer (liquid air), which makes it difficult to apply it in constrained conditions; direct contact with the outside air of the enclosing elements of the biofilter, which impairs the temperature conditions of its operation and, consequently, the cleaning effect in the cold season, when the structure is placed outside the heated room; the formation of stagnant zones in the stabilizer due to the uneven absorption of sediment by circulating Hacq catches from the deposition chamber, which leads to a reduction in the effect of the operation of the structure. The aim of the invention is to increase the efficiency of the stabilizer-biofilter by increasing the concentration of activated sludge and oxidizing power. This goal is achieved by the fact that a hydrocyclone stabilizer-biofilter with a jet aeration containing a cylindrical tank with cameras with / abilization and settling, a biofilter, nozzles of the input and output of the treated liquid, the circulation pump, is equipped with coaxially installed in the tank and not returning up to its bottom is a cylindroconical partition and a pipe, while the biofilter is placed in the pipe, the settling chamber is between the pipe and the partition, the stabilization chamber is between the partition and the walls of the tank, and akzhe additional input source liquid nozzles, one of which is disposed tangentially in the bottom portion of the chamber to stabilize the level of liquid in the settling chamber input; the other is in the stabilization chamber at an angle of 60 to the surface of the liquid. Free flowing jets of the sludge mixture under the pressure of a circulation pump, in addition to creating, together with submerged jets, horizontally circular movement of the liquid in the stabilization chamber, draw and crush the air, thus providing the liquid with oxygen saturation, which is necessary for aerobic stabilization of the sediment. The horizontal-circular movement of the fluid in the stabilization chamber eliminates the formation of stagnant zones and by the action of centrifugal force creates conditions for the compaction of activated sludge in the peripheral region (near the outer wall of the stabilization chamber). and reducing the concentration of activated sludge in the inner zone (at the entrance to the gravity settling tank, near its wall), which contributes to a more complete clarification of water in the gravity settling tank before feeding it to the biofilter. Centrifugal compaction makes it possible to increase the concentration of activated sludge in the stabilizer as a whole and, (therefore, increase the oxidizing capacity and reduce its size. Fig. 1 shows the operation of the hydro-cyclone biofilter stabilizer with jet aeration as part of the treatment plant; Fig. 2 - section A-A in Fig. 1. The hydrocyclone stabilizer-biofilter with jet aeration has a cylindrical body 1, in the center of which there is a biofilter 2 with a vodka dispenser 3 and a grate k for maintaining plastic loading, an annular partition 5 with a conical end 6, forming a gravity settling tank 7 with the biofilter wall and a building body with a stabilization chamber 8, inlet pipes 9 of submerged jets located tangentially to the stabilizer body at the level of liquid entry into the gravity settling tank, aerators 10 long outflow of free jets located above the surface of the liquid in the stabilization chamber at an angle of up to 60, a circulation pump 11 with a pressure 12 and a suction 13 pipelines located in the pump No. Station T with a receiving tank 15 located pipe 16 tangentially to the stabilizer body to discharge the circulating mixture from the stabilization chamber to the receiving tank of the pumping station through the receiving well 17 and pipe 18, into which the source waste water is simultaneously supplied via pipeline 19 and sediment from the secondary clarifier 20 to conduit 21, collecting duct 22 for draining liquid from the biofilter to the secondary clarifier and ventilating the biofilter, pipe 23 for periodically discharging stabilized sludge. Hydrocyclone stabilizer-biofilter with jet aeration works as follows. Sewage water from the sewer network through the pipeline 19 enters the receiving tank 15 from where the circulation pump 11 flows through the suction 13 and the pressure 12 pipelines into the stabilization chamber through the pipes 9 flooded jets and aerators 10 free jets. Using these jets in the stabilization chamber, the liquid is mixed by creating a horizontally circular movement, the formation of which is also favored by the tangentially located outlet pipe 16, designed to release the circulating sludge mixture from the stabilization chamber to the receiving tank 15 of the pump station k through the receiving well 17 and a pipe 18, Liquid streams flowing freely from aerators, except for creating a horizontal-circular movement of the sludge mixture in the stabilization chamber, both bake, as well as saturation of the fluid with air (oxygen), which is necessary for aerobic sediment stabilization. jHQ-KpyroBoe horizontal movement of the sludge mixture creates in the stabilization chamber under the action of centrifugal forces in the peripheral area and decrease in concentration sludge mixture in the internal area at the entrance to the gravity settling tank 7, where the liquid enters after the stabilization chamber. The clarified liquid from the gravity settling tank through the water distribution device 3 enters biofilter 2, where the process of biological sewage treatment is completed. The primary stage of biological purification of a liquid occurs when the source wastewater is supplied to the receiving tank of the asos station and then into the stacking chamber, in which a large part (up to 50–70) of organic wastewater flows. The proposed stabilizer-biofilter has the following advantages: it has the most effective technology of pre-treatment of waste water before a biofilter, based on the use of biosorption of centrifugal compaction of the sludge mixture that occurs during horizontal-circular movement of the liquid in the stabilization chamber, and the subsequent clarification of the mixture in the gravity settling tank, which leads to reducing the size of the biofilter; - horizontal-circular movement of the liquid eliminates the formation of stagnant zones in the chamber and that improves the cleaning effect of wastewater; The centrifugal compaction of the sludge mixture in the stabilization chamber allows an overall increase in the dose of activated sludge in -. aerobic stabilizer, and therefore, increase the oxidative capacity and reduce its size; direct contact of the enclosing structures of the biofilter with the outside air is excluded, which improves the temperature regime of its operation, and, consequently, the cleaning effect in the cold season when the structure is placed outside the heated room. Claims of Invention Hydrocyclone stabilizer-biofilter with jet aeration, comprising a cylindrical tank with stabilization and settling chambers, biofilter, feed inlet pipes and treated liquid outlet, a circulation pump that differs from the fact that, in order to increase work efficiency by increasing the concentration of sludge and oxidizing power of the stabilizer-biofilter, it is equipped with a cylindrocrinoic septum and pipe coaxially installed in the tank and not reaching its bottom The biofilter volume is placed in the pipe, the settling chamber is between the pipe and the partition, the stabilization chamber is between the partition and the walls of the tank, as well as additional branch pipes for introducing the initial fluid, one part of which is located tangentially in the lower part of the stabilization chamber at the level of the fluid entry into the sedimentation chamber, the other - in the chamber of stub /; tation at an angle of 60 to the surface. liquid. Sources of information taken into account in the examination 1.Patent of Germany No. 240li198, cl. From 02 to 1/10, 1370.

2. USSR author's certificate №567675, cl. C 02 C 1/02, 1975.