CN201136823Y - Aerobic-anaerobic circulating treatment device for waste water - Google Patents

Aerobic-anaerobic circulating treatment device for waste water Download PDF

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Publication number
CN201136823Y
CN201136823Y CNU2007200617420U CN200720061742U CN201136823Y CN 201136823 Y CN201136823 Y CN 201136823Y CN U2007200617420 U CNU2007200617420 U CN U2007200617420U CN 200720061742 U CN200720061742 U CN 200720061742U CN 201136823 Y CN201136823 Y CN 201136823Y
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reactor
water
inner core
aerobic
fluidized
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周少奇
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The utility model discloses a garbage effluent aerobic and anaerobic circulating treatment device. A fluidized bed reactor of the device comprises a reactor internal cylinder (8), a reactor external cylinder (9) and a three-phase separator (10); the reactor internal cylinder (8) is positioned at the lower end of the fluidized bed reactor, the upper end of the fluidized bed reactor internal cylinder (8) is connected with a conical body, the reactor external cylinder (9) is composed of the peripheral space of the reactor internal cylinder (8) at the lower end and the conical body at the upper end; the upper and the lower ends of the reactor external cylinder (9) are communicated with the reactor internal cylinder (8). When the reactor is used, after entering into the reactor internal cylinder, the garbage effluent enters an aerobic zone, an anoxic zone and an anaerobic zone successively, a similar inverted A<2>/O process is undergone, the effects of effectively removing COD and simultaneously nitrating denitrification are reached, the supplement complementation of the aerobic and anaerobic processes is realized, the technological process is simplified greatly, the floor area is saved, and the investment cost and the running cost are low.

Description

A kind of garbage, waste-water aerobic-anaerobic cyclic processing device
Technical field
The utility model belongs to and relates to a kind of wastewater treatment, particularly relates to the processing of percolate.
Background technology
At present, China has the municipal solid waste about 93% to handle the employing burying method.As time goes by, these msw landfills are under the biochemical action of compacting effort and microorganism, and contained pollutent will be with the moisture stripping in the landfill body, and forms percolate with rainfall.Country is more complex because China's landfill waste is emulated the advanced on composition, causes China's percolate composition more complicated, and pollution load is higher, and intractability is bigger.A spot of percolate can cause serious pollution to underground water, surface water and refuse landfill surrounding environment, directly threatens the safety at tap water and industrial or agricultural water water source.
Because the percolate composition is extremely complicated, existing organic contamination composition has inorganic pollutant component again, also contain some heavy metal contamination compositions, show very strong comprehensive pollution feature, and Pollutant levels are high especially in the percolate, this percolate is difficult to it is handled up to standard.So, generally adopt dissimilar processing method combined treatment both at home and abroad, to accomplish the requirement of qualified discharge.Usually, the combination of dissimilar methods generally be with biological process or land law as pre-treatment, use physico-chemical process as aftertreatment then.Handle emission standard for the percolate that reaches increasingly stringent, the combination of this technology has become a kind of trend, and the emphasis of research mainly concentrates on polytechnic collocation and coordination problem at present.
For how carrying out the processing of percolate, mainly there is following some subject matter:
(1) the percolate water yield changes greatly.Especially the seasonal variation amount is very big, rainy season the water yield bigger.At this problem, general landfill yard is provided with the leachate collection equalizing tank, carries out the water yield and regulates the processing of water quality homogenizing.
(2) the leachate quality characteristic variations is big.Different landfill yards, because all multifactor differences, there is very big-difference in its water quality, not necessarily also is applicable to the processing of another landfill percolate so be applicable to the treatment process of certain landfill percolate.
(3) ammonia nitrogen concentration height in the percolate.And constantly raise along with the increase in landfill yard age, other components contents are also very high.Particularly aged garbage, waste-water has ammonia-nitrogen content height, not biodegradable COD material complexity, characteristics that content is high.
(4) contain a large amount of toxic organic compounds in the garbage loading embeading percolation water, even comprise some environmental hormone class materials.
(5) carbon source deficiency in the percolate.When adopting the traditional biological denitrogenation processing, treatment effect is undesirable.
(6) aged percolate from garbage filling field biodegradability is poor.
(7) cost costliness.
In view of the hazardness of percolate is bigger, the percolate of domestic refuse sanitary filling field should reach the higher emissions standard.From present treatment technology, can make treat effluent stable be up to state standards " household refuse landfill sites pollution control criterion " (GB16889-1997) the ripe relatively treatment process of first discharge standard mainly contain anaerobism (UASB)+aerobic (SBR or MBR)+film (NF or RO) technology and evaporation or combustion technology.Yet these technologies exist the cost height, investment is big, film is seriously polluted, concentrated solution productive rate height (near about 30%) and problem such as difficult, have limited their general promotion and application.Thereby, how to reduce cost, improve the main direction that processing efficiency is just becoming insider's research.Aerobic-anaerobic is handled and biological denitrificaion when if can realize percolate in same reactor assembly, and exploitation has great importance.
The utility model content
The purpose of this utility model is to separate in different reactor at domestic and international percolate anaerobism, aerobic treatment, and need make up the shortcoming of settling tank, other advanced treatment technology (handling as film: ultrafiltration, reverse osmosis etc.), provide a kind of percolate in same bio-reactor, to realize aerobic (Oxic), anoxic (Anoxic), anaerobism (Anaerobic) Circulation, and the effect by triphase separator, realize the separation of active sludge, gas, treating water.
For reaching above-mentioned utility model purpose, the utility model has been taked following technical scheme:
A kind of garbage, waste-water aerobic-anaerobic cyclic processing device, comprise equalizing tank, sump pump, compressed air unit, micro porous aeration head and fluidized-bed reactor, described fluidized-bed reactor upper end bore is big, the lower end bore is little, the centre is provided with the cone-shaped body that connects top and bottom, is provided with reactor inner core, reactor urceolus and triphase separator in the fluidized-bed reactor; The reactor inner core is positioned at the fluidized-bed reactor lower end, and the bottom is provided with micro porous aeration head, and micro porous aeration head is connected with compressed air unit; Tube bottom also is communicated with equalizing tank by sump pump in the reactor; Fluidized-bed reactor inner core upper end is connected with cone, and the reactor urceolus is made up of the peripheral space of lower end reactor inner core and the cone of upper end; The upper and lower ends of reactor urceolus all communicates with the reactor inner core; Triphase separator is fixed on the top of fluidized-bed reactor, and lower end and urceolus upper end link, and the outside that the top of fluidized-bed reactor is positioned at triphase separator is provided with the overflow weir water port.
With respect to prior art, the advantage that the utlity model has:
(1) structural advantages of aerobic fluidized bed by absorbing in design, the UASB triphase separator of aerobic-anaerobic circulating fluidized bed (three-phase) bio-reactor, airlift bioreactor simultaneously realizes the integrated of three-phase fluidized bed function.
(2) the aerobic-anaerobic circulating fluid bed reactor passes through aerobic zone, oxygen-starved area, anaerobic zone, settling region successively to the processing of waste water, is similar to inverted (A on technology 2/ O) technology, but structurally overcome traditional (A 2/ O) technology or inverted (A 2/ O) at least three reactors of arts demand are separated the shortcoming of carrying out, and simplify technical process greatly, save floor space and cost of investment.
(3) the utility model can realize efficiently removing organism and denitrogenation dephosphorizing function in single reactor.Particularly can realize nitration denitrification biological denitrificaion simultaneously, make of provide the complementation with aspects such as the generation of consumption, basicity and consumption of two processes, saving running cost at COD and oxygen.
(4) the utility model solved field of waste water treatment in the world in A2/O technology the integrated and difficult problem aspect the nitration denitrification simultaneously, the utility model has important engineering application value at treatment scale less medium and small refuse landfill or municipal wastes compression transhipment station to percolate and other high ammonia nitrogen organic waste water.
Description of drawings
Fig. 1 is used aerobic-anaerobic circulating fluidized bed bioreactor construction synoptic diagram and a flow process of the utility model;
Fig. 2 is the removal effect of the utility model method therefor to garbage, waste-water COD;
Fig. 3 is the quick removal effect of the utility model method therefor to ammonia nitrogen;
Fig. 4 is that the utility model method therefor is to NO 3 -The removal effect of-N.
Embodiment
Come below in conjunction with Figure of description that the utility model is described in further detail, but the utility model scope required for protection is not limited to the scope described in the embodiment.
As shown in Figure 1, garbage, waste-water aerobic-anaerobic cyclic processing device comprises equalizing tank 1, sump pump 2, compressed air unit 5, micro porous aeration head 7 and fluidized-bed reactor; Described fluidized-bed reactor upper end bore is big, the lower end bore is little, and the centre is provided with the cone-shaped body that connects top and bottom, comprises reactor inner core 8, reactor urceolus 9 and triphase separator 10 in the fluidized-bed reactor; Reactor inner core 8 is positioned at the fluidized-bed reactor lower end, and the bottom is provided with micro porous aeration head 7, and micro porous aeration head 7 is connected with compressed air unit 5; Reactor inner core 8 bottoms also are communicated with equalizing tank 1 by sump pump 2; Fluidized-bed reactor inner core 8 upper ends are connected with cone 11, and reactor urceolus 9 is made up of the peripheral space of lower end reactor inner core 8 and cone 11 inner chambers of upper end; The upper and lower ends of reactor urceolus 9 all communicates with reactor inner core 8; Triphase separator 10 is fixed on the top of fluidized-bed reactor, lower end and urceolus 9 upper ends link, the outside that the top of fluidized-bed reactor is positioned at triphase separator 10 is provided with overflow weir water port 12, and overflow weir water port 12 is connected with blowoff basin 13, the blowoff basin water valve 14 that runs in.The pipeline that connects micro porous aeration head 7 and compressed air unit 5 is provided with gas meter 6; Also be respectively equipped with water intaking valve 4 and liquid meter 3 on the pipeline of ligation device inner core 8 and equalizing tank 1.Active sludge and percolate are equipped with in the bottom of reactor inner core 8.
During the treating refuse percolate, earlier pending garbage, waste-water is placed equalizing tank 1, by the effect of sump pump, garbage, waste-water is introduced reactor inner core 8 then, by liquid meter 3 its flows of control; Simultaneously, by compressed air unit 5,, control compressed-air actuated flow, and pressurized air is blasted in the reactor inner core 8 uniformly by micro porous aeration head 7 by gas meter with the bottom that air is introduced reactor inner core 8; The temperature of waste water is controlled to be 26~36 ℃.Pressurized air is upwards motion in reactor inner core 8, and the liquid between drive reactor inner core 8, the urceolus 9 causes and circulates; After garbage, waste-water enters the reactor inner core, be introduced into the aerobic zone (0xiczone) of reactor inner core 8, afterwards, in the effect of reactor head owing to triphase separator 10, gas is got rid of by triphase separator 10, cone-shaped body on reactor urceolus 9 tops forms oxygen-starved area (Anoxic zone), waste water is flowed through after the oxygen-starved area, because microorganism is to the consumption of oxygen, between reactor inner core 8 and urceolus 9 lower ends, form anaerobic zone (Anaerobiczone), through after the anaerobic zone, because the fluidic Circulation, sewage enters the lower end of inner core 8, enters aerobic zone again, so move in circles, sewage has passed through a similar inverted (A in same bio-reactor 2Therefore/O) technological process, has good while nitration denitrification denitrogenation effect and phosphor-removing effect.Because the main body reactor head is provided with triphase separator 10, urceolus 9 tops are cone structure, waste water-active sludge-gas three-phase suspension is by behind the triphase separator 10, form oxygen-starved area and settling region at conical part, waste water passes through overflow weir through post precipitation in reactor head, discharges through water port 12 and enters blowoff basin.Throw out is suspended in conical part.Be fresh percolate as water inlet, water outlet can reach the country-level or secondary discharge standard of time class waste water.For aged garbage loading embeading waste water, be difficult to reach national secondary discharge standard as water inlet, can take deep treatment method, make it reach national grade one discharge standard.
Use above-mentioned garbage, waste-water aerobic-anaerobic cyclic processing device and handle from Guangzhou refuse landfill dosing chamber percolate, garbage, waste-water aerobic-anaerobic cyclic processing device adopts stainless material to make, and the effecting reaction volume is 0.52m 3What the mud in the reactor inner core 8 took from that this refuse landfill handles percolate handles the active sludge of such waste water through the anaerobic-aerobic combination process.The water quality of this water from diffusion has been carried out monitoring, tracking and the research of 5 years, and its principal character is as shown in table 1.
The main character of table 1 Guangzhou diffusion water of garbage burying ground
During processing, pending garbage, waste-water is placed equalizing tank 1, consider the domestication of the various microorganisms of nitration denitrification simultaneously, adopt the waste water of low concentration comparatively favourable, so in more than 140 day of on-test, percolate is diluted.By the effect of pump 2, the garbage, waste-water of dilution is introduced the aerobic-anaerobic circulating fluidized bed bottom (bottom of reactor inner core 8) that active sludge and percolate are housed, by liquid meter 3 its flows of control; Simultaneously, by air compressor 5, air is introduced aerobic-anaerobic circulating fluidized bed bottom (bottom of reactor inner core 8), by the compressed-air actuated flow of gas meter 6 controls, and, pressurized air is blasted aerobic-anaerobic circulating fluidized bed bottom (bottom of reactor inner core 8) uniformly by micro porous aeration head 7; The temperature of waste water is controlled between 26~36 ℃.At test more than 140 day domestication and run duration, observe treatment effect stability and high efficiency always, so use percolate stoste (the nearly 24000mg/l of COD concentration, ammonia nitrogen concentration scope are at 1500-2041mg/l) instead, do not do dilution, directly pump into aerobic-anaerobic circulating fluidized bed of the present utility model, moved more than 30 day, COD removes with while nitration denitrification denitrogenation effect and keeps stability and high efficiency always, and particular case is as follows:
1, COD in the garbage seeping water CrTreatment effect
As shown in Figure 2: the water inlet COD of reactor CrThe concentration most of the time fluctuates between 568.6~3228mg/l (adopt percolate stoste to carry out suitable dilution early stage), and later stage concentration adopts stoste (changing fast) to reach nearly 24000mg/l; Reactor water outlet COD CrConcentration more stable always, generally all below 250mg/l, average out to 136.3mg/l has reached the national secondary discharge standard (COD of similar waste water Cr<300mg/l), and reached the requirement of Guangdong Province " control is two up to standard ".The reactor run duration COD that tends towards stability CrAverage removal rate be about 95.2%, and COD CrClearance be subjected to the influence of system shock and other factor less.This shows that the aerobic-anaerobic circulating fluid bed reactor is to the COD in the garbage loading embeading percolation water CrHigher and stable clearance is arranged.
2, the ammonia nitrogen treatment effect of percolate
As shown in Figure 3: when reactor Inlet and outlet water ammonia nitrogen concentration begins between 108~200mg/l, during the reactor operation tends towards stability, later stage, influent concentration was at 1500-2041mg/l, but the water outlet ammonia nitrogen concentration is always below 25mg/l, average out to 8.46mg/l has reached the national secondary discharge standard (NH of similar waste water 3-N<25mg/l).Reactor tend towards stability the operation process in, ammonia nitrogen removal frank is always more than 90%, and is the highest near 100%, the average removal rate during the steady running is 95.8%.
3, the denitrification treatment effect of percolate
As shown in Figure 4: under low dissolved oxygen concentration, (remain on below the 1.0mg/l), the ammonia nitrogen water inlet that keeps same high density, water outlet ammonia nitrogen concentration and nitrate nitrogen concentration all can control to very low, and the situation that the water inlet of water outlet nitrate nitrogen concentration ratio also will be low occurs.Have significantly nitration denitrification denitrogenation process simultaneously in this explanation reactor, and the denitrification rate has surpassed 100%.

Claims (4)

1, a kind of garbage, waste-water aerobic-anaerobic cyclic processing device comprises equalizing tank (1), sump pump (2), compressed air unit (5), micro porous aeration head (7) and fluidized-bed reactor; It is characterized in that described fluidized-bed reactor upper end bore is big, the lower end bore is little, the centre is provided with the cone-shaped body that connects top and bottom, is provided with reactor inner core (8), reactor urceolus (9) and triphase separator (10) in the fluidized-bed reactor; Reactor inner core (8) is positioned at the fluidized-bed reactor lower end, and the bottom is provided with micro porous aeration head (7), and micro porous aeration head (7) is connected with compressed air unit (5); Reactor inner core (8) bottom also is communicated with equalizing tank (1) by sump pump (2); Fluidized-bed reactor inner core (8) upper end is connected with cone (11), and reactor urceolus (9) is made up of the peripheral space of lower end reactor inner core (8) and the cone (11) of upper end; The upper and lower ends of reactor urceolus (9) all communicates with reactor inner core (8); Triphase separator (10) is fixed on the top of fluidized-bed reactor, and lower end and urceolus (9) upper end links, and the outside that the top of fluidized-bed reactor is positioned at triphase separator (10) is provided with overflow weir water port (12).
2, garbage, waste-water aerobic-anaerobic cyclic processing device according to claim 1 is characterized in that the described connection micro porous aeration head (7) and the pipeline of compressed air unit (5) are provided with gas meter (6).
3, garbage, waste-water aerobic-anaerobic cyclic processing device according to claim 1 and 2 is characterized in that also being respectively equipped with water intaking valve (4) and liquid meter (3) on the pipeline of described ligation device inner core (8) and equalizing tank (11).
4, garbage, waste-water aerobic-anaerobic cyclic processing device according to claim 3 is characterized in that described overflow weir water port (12) is connected with blowoff basin (13), and blowoff basin (13) links to each other with water discharge valve (14).
CNU2007200617420U 2007-12-18 2007-12-18 Aerobic-anaerobic circulating treatment device for waste water Expired - Lifetime CN201136823Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101618924B (en) * 2009-07-21 2012-06-27 天津市塘沽鑫宇环保科技有限公司 Wastewater treatment device
CN101723564B (en) * 2010-01-22 2012-07-25 周建伟 Garbage percolate treating process by biochemical and membrane separation
CN104773927A (en) * 2015-04-28 2015-07-15 罗文兵 Village and town sewage treatment system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101618924B (en) * 2009-07-21 2012-06-27 天津市塘沽鑫宇环保科技有限公司 Wastewater treatment device
CN101723564B (en) * 2010-01-22 2012-07-25 周建伟 Garbage percolate treating process by biochemical and membrane separation
CN104773927A (en) * 2015-04-28 2015-07-15 罗文兵 Village and town sewage treatment system

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Granted publication date: 20081022

Effective date of abandoning: 20071218