CN201169555Y

CN201169555Y - Multifunctional filter tube

Info

Publication number: CN201169555Y
Application number: CNU2007201965765U
Authority: CN
Inventors: 李庆吉; 张燕
Original assignee: Qingquan Water Co Ltdshenzhen
Current assignee: Qingquan Water Co Ltdshenzhen
Priority date: 2007-12-28
Filing date: 2007-12-28
Publication date: 2008-12-24
Anticipated expiration: 2017-12-28

Abstract

The utility model relates to a water treatment device, in particular to a multifunctional filter tube which simultaneously realizes water distribution, back-washing water distribution and air distribution, and aeration. The multifunctional filter tube consists of a transverse filter tube, an end enclosure, a vertical air tube and a vertical water tube, wherein, the upper part of the cross section of the transverse filter tube is semicircular; the middle of the cross section of the transverse filter tube is rectangular; the bottom of the cross section of the transverse filter tube is a bottom plate; two or more rows of exhaust holes are arranged on the side face of the transverse filter tube according to certain distance and opening proportion; water distribution holes are arranged on the bottom plate; the transverse filter tube is connected with the vertical air tube and the vertical water tube for water inlet and air inlet on certain positions; under the condition of aeration of a biological filter, air is distributed by a first exhaust hole; and under the condition of washing of the biological filter, the air is distributed together by all the exhaust holes. The multifunctional filter tube can simultaneously realize various functions such as water distribution and aeration of the aeration biological filter, and water distribution, air distribution and so on under the condition of back-washing, and avoids the problem of increase of investment, engineering quantity and maintenance work at late stage due to respective utilization of two systems for washing, water distribution and air distribution and aeration of the aeration biological filter.

Description

Multi-functional chimney filter

Technical field

The utility model relates to water treating equipment, specifically is a kind of multi-functional chimney filter that collects water distribution uniformity, back flushing distribute water and air, uniform aeration that is exclusively used in BAF.

Background technology

BAF is to utilize a kind of filter tank of organism being degraded attached to the microbial film of filter material surface, characteristics such as floor space is little, treatment effect is good that it has, and the quality of aeration effect directly affects treatment effect and running cost.BAF must be regenerated biomembranous activity through back flushing after normal operation for some time, if air water is inhomogeneous then to cause filtrate to wash easily unclean during back flushing, the time has been grown, and filtrate can form and harden; Or fragile microbial film thickness, the flora ecotope also there is certain influence, cause the filter tank in the quite a while after back flushing, processing efficiency obviously descends, and effluent quality can not get ensureing.As seen to get homogeneity also be quite important to the back flushing distribute water and air.

Because aeration requires different (backwash gas intensity is about 4 times of aeration intensity) with back flushing effect and tolerance, so the back flushing distribute water and air device and the aerating apparatus of BAF divide two cover systems to carry out at present.When the BAF construction and installation, need install this two cover system, the installation work amount increases, the system maintenance complexity.Be currently applied to a kind of strainer head that mostly is the BAF special use of BAF back flushing, this filter can only carry out the distribution of former water and the simple function of back flushing distribute water and air.And the aeration mode of BAF mainly contains two kinds of perforated pipe aerating regulation and single hole menbrane aerators, the former construct simple but shortcoming be coefficient of oxygen utilization relatively low (about 12%), and need to adopt stainless steel pipes, expense is big; Latter's coefficient of oxygen utilization is higher, can effectively cut down the consumption of energy, and shortcoming is the cost height, and equipment amount is big, complexity is installed, and aerator and blast main junction are damaged easily, need stopping production that filtrate is routed up and safeguard aerating system, have a strong impact on the normal operation of Sewage Plant, also increased the maintenance cost of equipment.

Summary of the invention

The purpose of this utility model is to solve BAF back flushing distribute water and air system and aerating system is used two cover systems respectively, the problem of the increase of the investment that causes, quantities, later maintenance work.Water distribution, gas distribution multi-functional when a kind of former water dispenser with BAF, aeration and back flushing are provided, the multi-functional chimney filter that the aerating system in traditional BAF and back-purge system two cover systems are united two into one.Solved the problem that the BAF construction investment was big in the past, difficulty of construction is high, coefficient of oxygen utilization is low.

The multi-functional chimney filter of the utility model comprises: horizontal chimney filter, end socket, vertical tracheae and vertical water pipe.The semicircular pipe that its top, transverse section of described horizontal chimney filter is internal diameter 135mm, middle part are the rectangular pipe of dead size 135 * 100mm (wide * height); Laterally the chimney filter lower end is a base plate, and respectively there is the 8mm width its both sides, whole elongated fixed-wing limit; There are height, a width to be 5mm in the middle of the bottom, whole elongated projection; Laterally the thickness of pipe of chimney filter is 5mm.The two or more rows pore is opened with the perforate ratio at a certain distance in rectangular pipe side at horizontal chimney filter, wherein the first venting hole perforate ratio is 0.04%～0.06%, aperture 2.0～3.0mm, spacing 100～150mm, second venting hole is 25～40mm place below first venting hole, the perforate ratio is 0.05%～0.1%, aperture 2.0～3.0mm, spacing 40～60mm.The both sides of center protrusion on the base plate of horizontal chimney filter lower end, having the aperture is 15～17mm, spacing is the water distributing pore of 140～160mm.Certain position at horizontal chimney filter combines with the water inlet air inlet with vertical tracheae and vertical water pipe, and the height that vertical tracheae stretches into horizontal chimney filter is higher than the height of first venting hole, and the height that vertical water pipe stretches into horizontal chimney filter is higher than the height in aqueous vapor hole.

Because the aeration air capacity is than back flushing air capacity few (aeration intensity be about back washing strength 1/4), it is thin when laterally the air cushion layer that forms in the chimney filter is than back flushing, so air only carries out uniform aeration through first row's aeration pore to BAF during aeration, the aperture flow velocity of aeration air is 30～35m/s.After testing, the coefficient of oxygen utilization of this chimney filter reaches about 17%, is higher than conventional aerator.When carrying out back flushing, large-minded, air cushion layer is thicker, and the back flushing air carries out air jointly by whole pores and distributes, and the aperture flow velocity of back flushing air is 33～40m/s.

Description of drawings

Fig. 1 is the utility model front view;

Fig. 2 is the utility model sectional view;

Fig. 3 is the utility model upward view.

Each several part is in the accompanying drawing: multi-functional chimney filter is by horizontal chimney filter 1, end socket 2, and vertical tracheae 3, vertical water pipe 4 are formed, and end socket 2 is with the closed at both ends of horizontal chimney filter 1.Open in horizontal chimney filter 1 upper bottom portion that 5 liang of upper lateral parts of water distributing pore are opened first row's aeration pore 6,25～40mm opens at the place second venting hole 7 below first venting hole.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

When BAF was carried out back flushing, water entered horizontal chimney filter 1 from vertical water pipe 4, and air enters horizontal chimney filter 1 from vertical tracheae 3.Vertical duct 3 with 4 the different of horizontal chimney filter 1 inner height and laterally on the chimney filter 1 pore 6,7 and water hole 5 different making highly enter empty G﹠W AUTOMATIC ZONING in the horizontal chimney filter 1, air in the above, water is below.

When the biological filter was in the aeration running condition of little tolerance, because air capacity is less, the thickness of gas cloud in multi-functional chimney filter 1 was also lower, is distributed by first venting hole 6 on the chimney filter 1, and water is then distributed by second venting hole 7 and water distributing pore 5; When the biological filter is in flushing running condition than atm number, because the flushing out air amount is bigger, the thickness of gas cloud in multi-functional chimney filter 1 is also thicker, is distributed jointly by first venting hole 6 on the chimney filter 1 and second venting hole 7, and water is then distributed by water distributing pore 5.The perforate ratio of first venting hole 6 and second venting hole 7 and between height distance the pore flow velocity in aeration and when flushing is adhered to specification, thereby guarantee that air presses the thickness of the size adjustment gas cloud of tolerance chimney filter 1 in.The aperture, hole of first venting hole 6 and second venting hole 7 is 2.0～3.0mm, and this aperture can obtain enough little bubble, improves the transfer efficiency of oxygen, satisfies the needs of biological filter oxygenation.

The application of the multi-functional chimney filter of the utility model, can make the distribution of only adopting this multi-functional chimney filter can realize distribution, flushing out air and the water of intaking simultaneously in the BAF, the multiple function of aeration, do not overlap independently aerator and do not need to establish again separately one, equipment usage quantity, the installation workload of BAF have been reduced, save the construction investment and the cycle of BAF, also reduced the running maintenance workload of BAF.

Claims

1, a kind of multi-functional chimney filter that is used for BAF comprises horizontal chimney filter, end socket, vertical tracheae and vertical water pipe, it is characterized in that:

Described horizontal chimney filter is made up of top semicircular pipe, middle part rectangular pipe and base plate, two rows or the above pore of two rows are opened in certain distance and perforate ratio in its side, water distributing pore is opened in the bottom, certain position at horizontal chimney filter combines with the water inlet air inlet with vertical tracheae and vertical water pipe, the height that vertical tracheae stretches into horizontal chimney filter is higher than the height of first venting hole, and the height that vertical water pipe stretches into horizontal chimney filter is higher than the height in water hole.

2, multi-functional chimney filter according to claim 1 is characterized in that: horizontal its top, transverse section of chimney filter semicircular pipe that is internal diameter 135mm, middle part be dead size wide * rectangular pipe of height=135 * 100mm, base plate is arranged at the bottom.

3, multi-functional chimney filter according to claim 1, it is characterized in that: laterally two rows or many venting holes are opened in the chimney filter side, wherein the first venting hole perforate ratio is 0.04%～0.06%, spacing 100～150mm, the second venting hole perforate ratio is 0.05%～0.1%, spacing 40～60mm, two venting hole spacings are 25～40mm, the aperture is 2.0～3.0mm.

4, multi-functional chimney filter according to claim 1 is characterized in that: opening two rounds on the base plate of horizontal chimney filter lower end directly is 15～17mm, and spacing is the water distributing pore of 140～160mm.

5, multi-functional chimney filter according to claim 1, it is characterized in that: vertical water pipe and tracheae are inserted in the horizontal chimney filter by the below of horizontal chimney filter, the height that wherein vertical tracheae stretches into horizontal chimney filter is higher than the height of first venting hole, and the height that vertical water pipe stretches into horizontal chimney filter is higher than the height in water hole.