CN200946119Y - A new biological aerated filter - Google Patents

Abstract

A novel aerating biologic filtering pool is characterized in that: inside the pool are arranged a filtering pool, a feed-water canal, a waterexit weir and a timekeeping water tank, while the pool bottom is connected with a rising pipe; the rising pipe communicates a plurality of aerating biologic filtering pools and is connected with a waterexit trough; a draining siphon pipe is connected with a water-seal well and an aerating biologic filtering pool, while a feed-water siphon pipe with the feed-water canal and the waterexit weir; on the feed-water siphon pipe is connected a feed-water auxiliary siphon pipe, a feed-water suction pipe and a feed-water siphon destruction pipe, while on the draining siphon pipe is connected a draining auxiliary siphon pipe, a draining suction pipe and a draining siphon destruction pipe with the draining siphon destruction pipe connected with the timekeeping water tank; inside the filtering pool is filled with filtering material, while the bottom of the filtering pool is provided with a filtering head, an aerating pipe and a backwashing air tube. The utility model has the advantages of that: (1) it is of complete hydraulic automatic control, convenient operation, simplifying management and less maintenance workload; (2) no special clear water tank is needed, thereby saving construction cost; (3) backwash pump is not needed with less equipment investment and running cost; (4) no large-scale valve but siphon pipe is arranged on the filtering pool, thereby reducing construction cost; (5) lattice subdivision of filtering pool is realized, thereby being helpful to distribute water and gas evenly.

Description

A kind of novel BAF

Technical field

The utility model relates to a kind of novel BAF.

Background technology

BAF is the sewage treatment process that contact oxidation technology and suspended substance filtration process are combined, its technological principle is the less particulate filter of a certain amount of particle diameter of filling in the filter tank, the filter material surface microbial film of growing, the inner aeration in filter tank, effluent stream through the time, owing to adhere to high-concentration biological film amount on the filtrate, utilize the pollutent in the quick degrading waste water of its strong oxidative degradation ability, simultaneously, utilize particle diameter of filter medium features of smaller and biomembranous biological flocculation, hold back a large amount of suspended substances in the sewage, and guarantee that the microbial film that comes off can not drift out with water, reaches the purpose of purifying liquid waste thus.Carry out along with filtering, because microbial film progressive additive in the filter material layer, suspended solids constantly accumulates, water head loss by filtration progressively strengthens, under certain intake pressure, design discharge will can not get guaranteeing, should carry out back flushing regeneration this moment to remove excessive microbial film and suspended solids in the filter bed, recover the processing power in filter tank.The back-flushing method of BAF is to utilize backwashing pump to wash, and backwashing water derives from tank.The main drawback of this purging method is: (1) need be provided with special backwashing pump, because the back flushing water yield is bigger, the power of backwashing pump is bigger, has increased facility investment, maintenance of the equipment and the operation electricity charge; (2) the back flushing pond must be set and store backwashing water, because the back flushing water yield is bigger, often the backwashing water pool volume is bigger, increases civil engineering costs; Must stop into water during (3) owing to back flushing, therefore water intaking valve, outlet valve, back-washing valve and water discharge valve must be set controls water (flow) direction, has increased the expense of valve on the one hand, has increased the difficulty of operational administrative on the other hand.

Summary of the invention

The purpose of this utility model provides a kind of novel BAF, and it need not special clear water tank and backwashing pump, saves civil engineering and cost of equipment.

The utility model is achieved like this, it comprises into water siphon pipe, discharge siphon, water tank clocks, trapped well, inlet channel, effluent weir, effluent trough, drainage tray, it is characterized in that being provided with in the BAF filtering basin, inlet channel, effluent weir, timing tank, the BAF bottom is connected with rising pipe, rising pipe interconnects some lattice BAF, rising pipe connects effluent trough, discharge siphon connects trapped well and BAF, the water inlet siphon pipe connects inlet channel and effluent weir 10, on the water inlet siphon pipe, connect the auxiliary siphon pipe of water inlet, water inlet extraction pipe and water inlet siphon destructing tube, on discharge siphon, connect the auxiliary siphon pipe of draining, draining extraction pipe and draining siphon destructing tube, the draining siphon destructive pipe coupling water tank that clocks, filtrate is housed in the filtering basin, and filter is arranged in the filtering basin bottom, aeration tube and back flushing tracheae.

The utility model has the advantages that: (1) waterpower is fully controlled automatically, and operation is convenient, and management is simple, and maintenance workload is little; (2) do not need special clear water tank, save civil engineering costs; (3) backwashing pump need be set, save facility investment and working cost; (4) do not need large-scale valve on the filter tank, utilize siphon pipe to replace valve, cost is low; (5) filter tank segmentation lattice be can accomplish, uniform water distribution, distribution helped.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

In the drawings 1, the auxiliary siphon pipe 2 of water inlet, water inlet extraction pipe 3, water inlet siphon destructing tube 4, BAF 5, water inlet siphon pipe 6, discharge siphon 7, water tank 8 clocks, trapped well 9, inlet channel 10, effluent weir 11, filter 12 aeration tubes 13, recoil Xian tracheae 14, rising pipe 15, total rising pipe 16, effluent trough 17, filtrate 18, top water-level 19, filtering basin 20, effluent trough top water-level 21, siphon pipe 22 is assisted in draining, draining extraction pipe 23, the draining siphon destructing tube

Embodiment

As shown in Figure 1, the utility model comprises into water siphon pipe 5, discharge siphon 6, water tank 7 clocks, trapped well 8, inlet channel 9, effluent weir 10, effluent trough 16, rising pipe 14, it is characterized in that being provided with in the BAF 4 filtering basin 19, inlet channel 9, effluent weir 10, timing tank 7, BAF 4 bottoms are connected with rising pipe 14, rising pipe interconnects some lattice BAF, rising pipe connects effluent trough 16, the BAF 4 outer trapped wells 8 that connect, discharge siphon 6 connects trapped well 8 and BAF 4, water inlet siphon pipe 5 connects inlet channel 9 and effluent weir 10, on the water inlet siphon pipe, connect the auxiliary siphon pipe 1 of water inlet, water inlet extraction pipe 2 and water inlet siphon destructing tube 3, connect the auxiliary siphon pipe 21 of draining in discharge siphon, draining extraction pipe 22 and draining siphon destructing tube 23, the draining siphon destructive pipe coupling water tank 7 that clocks, filtrate 17 is housed in the filtering basin 19, filter 11, aeration tube 12 and back flushing tracheae 13 are arranged in the filtering basin bottom.During use, former water enters inlet channel 9, because the effect of auxiliary siphon pipe 1 of water inlet and water inlet extraction pipe 2, making into, water siphon pipe 5 forms vacuum, water inlet siphon pipe 5 produces syphonic effect, former water enters filtering basin 19 by syphonic effect to begin to filter, and the water after the filtration is discharged through rising pipe 14, total rising pipe 15 and effluent trough 16.Carry out along with filtering, the water level in the filter tank rises gradually, and when water level rose to top water-level 18, the current overflow entered the auxiliary siphon pipe 21 of draining.Under the effect of auxiliary siphon pipe 21 of draining and draining extraction pipe 22, constantly take the air in the discharge siphon 6 away, discharge siphon 6 forms siphon.Because discharge siphon 6 forms siphons, the water level in the filter tank descends rapidly, and when the water level in the filter tank is lower than the mouth of pipe of water siphon destructing tube 3 into when following, water inlet siphon pipe 5 is communicated with atmosphere, and the siphon destructive of intaking stops into water; When the water level in the filter tank was lower than the water level 20 of effluent trough, current began reversed flow, were flowed to filter material layer 17 by effluent trough, and current carry out back flushing to filter material layer, and flushing waste water is discharged the filter tank by discharge siphon 6.Backwashing time determines that by timing tank 7 in the time of discharge siphon 6 drainings, draining siphon destructing tube 23 is taken the water in the timing tank away, when the water of timing tank is drained, draining siphon destructing tube 23 in the timing tank is communicated with atmosphere, the draining siphon destructive, and back flushing finishes.After back flushing finishes, the filter tank median water level rises gradually, when water level rises to the mouth of pipe of water siphon destructing tube 3 into when above, water inlet siphon pipe 5 cuts off with air, under the effect of auxiliary siphon pipe 1 of water inlet and water inlet extraction pipe 2, the air in the water inlet siphon pipe 5 is constantly taken away, and water inlet siphon pipe 5 forms vacuum, siphon forms, and water inlet is filtered again.The water of whole backwash process is provided by other filter grid filtered water, the clear water tank need be set, and all filter grids are interconnected by rising pipe.

Claims (1)

1. A new type of biological aerated filter, which includes a water inlet siphon, a drainage siphon, a timing tank, a water seal well, an inlet channel, an outlet weir, an outlet tank, and an outlet pipe. It is characterized in that the biological aerated filter is equipped with There are filter tanks, water inlet channels, water outlet weirs, and timing water tanks. The bottom of the biological aerated filter is connected with an outlet pipe. The outlet pipe connects several grids of aerated biological filters with each other. Biological aerated filter, the water inlet siphon is connected to the water inlet channel and the outlet weir, the water inlet auxiliary siphon, the water inlet suction pipe and the water inlet siphon destruction pipe are connected to the water inlet siphon, the drainage auxiliary siphon, the drainage suction pipe are connected to the drainage siphon With the drainage siphon breaking pipe, the drainage siphon breaking pipe is connected to the timing water tank, filter material is housed in the filter tank, and filter head, aeration pipe and backwash air pipe are arranged at the bottom of the filter tank.

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