Pond oxidation in a kind of minute pocket type filter tank of removing contamination
The utility model relates to the filter field in the urban wastewater treatment firm advanced treatment of wastewater process, relates in particular to a kind of small investment, efficient is high, easy to operate, floor space the is little minute pond oxidation pocket type filter tank of removing contamination.
Rose in 2010, country has improved urban wastewater treatment firm effluent quality standard, I level B is promoted to I level A, and sewage treatment plant must increase corresponding process facility just can reach the effluent quality requirement, wherein must increase the filtering technique facility and could satisfy effluent quality to the requirement of suspension.What generally adopt before this is the sand filtering ponds, and filter medium is quartz sand, anthracite, active carbon etc., and this process facility investment is large, floor space is large, and filtration resistance is large, efficient is low, and particularly backwash need to be very high-power, complicated operation.
Revolving-leaf type filter and filtering cloth filtering pool began to use to some extent at urban wastewater treatment firm over the past two years.The filter medium of these two kinds of filtration facilities is long wool fiber filter cloths, have the common features such as filter efficiency height, reduced investment, floor space be little, the similar carpet sweeper of its back purge system, sweep suction by a tubular type mud-sucking device in the filter cloth unit on plane, the former is the filter cloth unit rotational, and dredging tube is static.The latter is that the filter cloth unit is static, and dredging tube moves.This class device is used more in early days in places such as coal washerys, be mainly used to the filtering inorganic material.Can run into a problem that is difficult to overcome in the urban wastewater treatment firm application: i.e. breeding and the conjunctiva of microorganism on the long wool filter cloth.Because what urban wastewater treatment firm adopted all is bioanalysis, with a small amount of organic matter and microorganism, and long-term long wool filter cloth under water is easy to breed bacteria in the water outlet, and forms mycoderm and be directed at the filter cloth resistance and increase even lost efficacy.
The applicant has invented a kind of blowback bag type filter device [patent No.: 201220210856.8] before this, the invention is with the difference in minute blowback pocket type filter tank, pond: the former utilizes air blowback while water under high pressure spray to remove contamination; The present invention utilizes roots blower to inject air in water, makes in the water body dissolved oxygen near saturated, and because catching less than the organic matter consumable, therefore the mycoderm on the cloth bag can come off rapidly bacterium this moment (aerobic bacteria, the oxygen bacterium of holding concurrently), makes filter cloth obtain cleaning.Experiment showed, that this mode is more effective than air blowback.More energy-conservation, the power of fan that uses only needs the former 1/5th.
Summary of the invention
The purpose of this utility model solves above technical problem, adopts the cloth-bag type filter, and the method for the mycoderm that grows on a kind of cleaning cloth bag that can be permanently effective is provided, and makes continuously reliability service of this device.So that this high-performance device that is widely used in gas filtration of Bag filter is able in the water treatment popularization that particularly is applied aspect the treatment of Organic Wastewater, and solved the before this similar device difficult problem that the filter cloth conjunctiva can't be removed in water.Thereby form and a kind ofly be applicable to that mark transformation is carried by urban wastewater treatment firm and other treatment of Organic Wastewater factory, waste water advanced processing is installed reliably, this device has the advantages such as efficient energy-saving, small investment, floor space are little, easy and simple to handle.
In order to solve the problems of the technologies described above, minute pond oxidation that the utility model the provides pocket type filter tank of removing contamination is achieved in that
Pond oxidation in a kind of minute pocket type filter tank of removing contamination, comprise the filter tank casing, the filter tank orifice plate connects the cloth bag base, cloth bag inside is equipped with metallic framework, and metallic framework is connected and fixed device, and the top, filter tank is provided with water inlet, the filter tank bottom half is provided with delivery port, sewage draining exit, discharge outlet, air intlet, aerator, air blast connects air intlet by airduct, and discharge tube connects sewage draining exit, discharge outlet, and outlet conduit connects delivery port.
Described filter tank casing is the square bar structure, and interior separation is some Xiao Chi, is double-decker at the bottom of the pond of filter tank casing.
Described each cloth bag is a filter element, adopts outside filtering type, and upper end closed vertically is installed.
Described cloth bag is selected long wool ion fiber filter cloth specialized.
Described air intlet, discharge outlet, delivery port, sewage draining exit place all are provided with motor-driven valve.
The beneficial effects of the utility model are, this equipment (1) is selected long wool ion fiber filter cloth specialized, and the effluent quality suspension reaches the I level A standard in " the urban wastewater treatment firm discharge standard " of national regulation, effluent quality suspension content≤15mg/L.(2) the filter cloth manner of cleaning up is simple and reliable, and under the high-solubility oxygen state, cleaning filter cloth mycoderm time≤5 hour, power consumption 5kwh are than air back flushing type energy-conservation 60%.Overcome traditional turntable filter chamber and the filtering cloth filtering pool bottleneck problem in treatment of Organic Wastewater is used.(3) cloth bag adopts vertical installation, and relatively sand filter can be saved floor space 80%.(4) construction cost of facility only has 1/3 of sand filter, or turntable filter chamber and filtering cloth filtering pool 1/2.More important is a difficult problem that has solved the former filter cloth conjunctiva and mycoderm cleaning.(5) have that efficient energy-saving, small investment, floor space are little, easy and simple to handle, structure arranges novelty, reduces production costs, and has improved operating efficiency.
Description of drawings
Fig. 1 is the structural representation that the utility model provides;
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1, pond oxidation in a kind of minute pocket type filter tank of removing contamination, comprise filter tank casing 1, filter tank orifice plate 2 connects cloth bag base 3, cloth bag 4 inside are equipped with metallic framework 5, metallic framework 5 is connected and fixed device 6, the top, filter tank is provided with water inlet 7, casing 1 bottom in filter tank is provided with delivery port 10, sewage draining exit 14, discharge outlet 15, air intlet 9, aerator 17, air blast 8 connects air intlet 9 by airduct 12, discharge tube 16 connects sewage draining exit 14, discharge outlet 15, outlet conduit 13 connects delivery port 10, and filter tank casing 1 is the square bar structure, interior separation is some Xiao Chi, be double-decker at the bottom of the pond of filter tank casing 1, each cloth bag 4 is a filter element, adopts outside filtering type, vertically install, upper end closed, cloth bag 4 are selected long wool ion fiber filter cloth specialized, air intlet 9, discharge outlet 15, delivery port 10, sewage draining exit 14 places all are provided with motor-driven valve 11.
The remove contamination operation principle in pocket type filter tank of the invention pond oxidation in a kind of minute is:
(1) these filtering ponds are comprised of several independent Xiao Chi, and a plurality of long wool fiber filter cloth bags 4 are set in each Xiao Chi, and cloth bag 4 interior installation metallic frameworks 5 form a plurality of outer filters unit, and water body is by seepage in the export-oriented cloth bag, and suspension is held back by filter cloth.
When (2) working, in turn each Xiao Chi is carried out dump and remove contamination, clean cloth bag, do not affect the filtration continuity.
When (3) dump is removed contamination, utilize high pressure blower 8 by the water body oxygenation in the unit cells of aerator 17 in the structure, because the pool inner water amount is limited, the very fast rising of dissolved oxygen is near saturated in the water body, consumable occurs because catching less than enough organic matters in the aerobic bacteria that activates this moment, the oxygen bacterium of holding concurrently, and discharges in the water that dissolves in turbulence and with water so that the mycoderm death on the filter cloth comes off to make filter cloth obtain cleaning
(4) when opening sewage draining valve, liquid level descends in the pond, be stored in outlet conduit the clear water automatic back flow (by in the cloth bag to cloth bag outside) flow, further clear up the residue that remains in the fiber cloth.
The remove contamination specific embodiment in pocket type filter tank of the invention pond oxidation in a kind of minute is:
Experimental provision treating capacity 50m of the present invention
3/ h was through the test run in Sanmenxia City sewage treatment plant in 3 months, and ruuning situation is normal, reached following effect:
(1) select long wool ion fiber filter cloth specialized, the effluent quality suspension reaches the I level A standard in " the urban wastewater treatment firm discharge standard " of national regulation, effluent quality suspension content≤15mg/L.
(2) the filter cloth manner of cleaning up is simple and reliable, and under the high-solubility oxygen state, cleaning filter cloth mycoderm time≤5 hour, power consumption 5kwh are than air back flushing type energy-conservation 60%.Overcome traditional turntable filter chamber and the filtering cloth filtering pool bottleneck problem in treatment of Organic Wastewater is used.
(3) cloth bag adopts vertical installation, and relatively sand filter can be saved floor space 80%.
(4) construction cost of facility only has 1/3 of sand filter, or turntable filter chamber and filtering cloth filtering pool 1/2.More important is a difficult problem that has solved the former filter cloth conjunctiva and mycoderm cleaning.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.