CN103011404B - Internal-mixing anaerobic reaction tank - Google Patents

Internal-mixing anaerobic reaction tank Download PDF

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CN103011404B
CN103011404B CN201310001721.XA CN201310001721A CN103011404B CN 103011404 B CN103011404 B CN 103011404B CN 201310001721 A CN201310001721 A CN 201310001721A CN 103011404 B CN103011404 B CN 103011404B
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tank
gas
pipe
water separation
separation tank
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CN103011404A (en
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许中华
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Shandong Xu China Environmental Protection Technology Co., Ltd.
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许中华
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention provides an internal-mixing anaerobic reaction tank. A tank body is of a column shape, and a cone-shaped sludge bulking region, a reaction region, a gas-solid-liquid separation region and a precipitation separation effluent region are sequentially arranged in the tank body from bottom to top; and the cone-shaped sludge bulking region is a cone-shaped cover, an effluent weir is arranged above the precipitation separation effluent region, an automatic return-flow system is arranged at the top of the tank body and comprises an air lifting pipe, an air-water separation tank and a return pipe, the air lifting pipe is connected with the cone-shaped sludge bulking region and the air-water separation tank, the return pipe stretches into the lower part of the reaction region, a sewage gas pipe is connected between the air-water separation tank and the gas-solid-liquid separation region, and a sewage gas circulating pipe is connected between the air-water separation tank and a water distribution pipe. The internal-mixing anaerobic reaction tank has the advantages that the tank body is low in height, the tank can be started quickly by flocculent sludge with high shock load resistance, the requirement on a Ph value of inflow water is low, granule sludge increases quickly, the processing energy consumption is low, the processing efficiency is high, the effluent quality is stable, and the tank is suitable for processing of organic pollutants in various concentrations, simple to operate and convenience to run.

Description

Interior mixing anaerobic retort
Technical field
The present invention relates to a kind of anaerobic reaction device for the Industrial Waste Water Treatments biochemical treatment stage, belong to anaerobic reaction technical field.
Background technology
The various anaerobic reactors of present stage can classify as high, medium and low speed reactor.Highly be less than 10 meters, the anaerobic reactor of upflow velocity between 0.5-1.0 m/h classifies as middling speed anaerobic reactor, and middling speed anaerobic reactor COD volumetric loading is less than 5kgCOD.m3.d usually, can use floc sludge during start-up and operation.Intermediate reactor floor space is moderate, reduced investment, and it is convenient to run, but shortcoming to be suitable for high density water quality and can the sewage of biochemical difference, and the anaerobic sludge of system easily runs off.High-rate anaerobic reactor with the granule sludge reaction bed system IC that is feature for representative, its HRT(hydraulic detention time) short, volumetric loading is high, usual COD volumetric loading is greater than 5kgCOD.m3.d, but start-up and operation must use granule sludge, usual aspect ratio requires more than 2:1, and upflow velocity requires more than 1m/h, and granule sludge poor growth, need often to supplement fresh granule sludge.
Summary of the invention
The present invention is directed to the existing anaerobic biological reactor particularly deficiency that exists of conventional IC anaerobic technology, provide that a kind of capacity of resisting impact load is high, tank body height is low, energy consumption is low, available cotton-shaped anaerobic sludge starts and Granular sludge formation is fast, grow fast interior mixing anaerobic retort.
Interior mixing anaerobic retort of the present invention, adopts following technical proposals:
This retort, comprises tank body, and tank body is column, and aspect ratio is 1:1.5-1:2, is disposed with taper sludge bulking district, reaction zone, gas-solid-liquid disengaging zone and precipitate and separate exhalant region in tank body from bottom to top, taper sludge bulking district is a cone-shaped hood, gas-solid-liquid is provided with triphase separator in disengaging zone, the top of precipitate and separate exhalant region is provided with effluent weir, effluent weir is provided with rising pipe, the top of tank body is provided with automatic back flow system, this automatic back flow system comprises stripping tube, gas water separation tank and return line, stripping tube one end is connected with taper sludge bulking district, one end is connected with gas water separation tank, return line one end is connected with gas water separation tank, one end extend into bottom, reaction zone, biogas pipe is connected with between gas water separation tank and gas-solid-liquid disengaging zone, biogas recirculation pipe is connected with between gas water separation tank and water distributor, the bottom of tank body is provided with the water distributor stretched in taper sludge bulking district, the bottom of tank body is also provided with shore pipe, shore pipe is provided with mud valve.
During operation, waste water enters taper sludge bulking district from water distributor, enter biogas by biogas recirculation pipe racks simultaneously, under the effect of ambient pressure, gas-solid-liquid arrives gas water separation tank along stripping tube, air release in gas water separation tank, water and mud return to again bottom, reaction zone along return line under gravity, again gas-solid-liquid is formed in reaction zone, then gas-solid-liquid disengaging zone is risen to together, and be separated by realizing gas-solid-liquid at this, clear liquid is external through effluent weir discharge pond, mud is under gravity to sedimentation at the bottom of pond, biogas enters gas water separation tank along biogas pipe.The granule sludge that pond body produces regularly is discharged outside pond through shore pipe.
The present invention has that tank body height is low, floc sludge starts fast, the ability of anti impulsion load is strong, water inlet pH value requires loose, granule sludge increases fast, the advantage that process energy consumption is low, and processing efficiency is high, stable effluent quality, is applicable to the process of various concentration organic pollutant, simple to operate, it is convenient to run.
Accompanying drawing explanation
Accompanying drawing is the structural representation of mixing anaerobic retort in the present invention
In figure: 1, tank body, 2, taper sludge bulking district, 3, reaction zone, 4, gas-solid-liquid disengaging zone, 5, precipitate and separate exhalant region, 6, gas water separation tank, 7, effluent weir, 8, water distributor, 9, shore pipe, 10, return line, 11, stripping tube, 12, biogas recirculation pipe, 13, biogas pipe, 14, rising pipe.
Embodiment
As shown in drawings, interior mixing anaerobic retort of the present invention mainly comprises columnar tank 1, and tank body aspect ratio is 1:1.5-1:2, and tank body 1 adopts steel construction, and whole structures are column, is a multizone, multi-functional combination.Taper sludge bulking district 2, reaction zone 3, gas-solid-liquid disengaging zone 4 and precipitate and separate exhalant region 5 is disposed with from bottom to top in tank body 1.Taper sludge bulking district 2 is a cone-shaped hood.Triphase separator is provided with in gas-solid-liquid disengaging zone 4.The top of precipitate and separate exhalant region 5 is provided with effluent weir 7, and effluent weir 7 is provided with rising pipe 14.The top of tank body 1 is provided with automatic back flow system, this automatic back flow system comprises stripping tube 11, gas water separation tank 6 and return line 10, stripping tube 11 one end is connected with gas water separation tank 6, one end is connected with taper sludge bulking district 2, high concentration sludge in taper sludge bulking district 2 and hc effluent mixed solution are promoted to gas water separation tank 6 by stripping tube 11, by efficient mass transfer, reach the object that granule sludge grows fast.Return line 10 one end is connected with gas water separation tank 6, and one end extend into the bottom of reaction zone 3, and the muddy water after separation flows back to reaction zone 3 certainly through return line 10.The bottom of tank body 1 is provided with the water distributor 8 stretched in taper sludge bulking district 2, and water distributor 8 is provided with water intaking valve.The bottom of tank body 1 is also provided with shore pipe 9, shore pipe 9 is provided with mud valve, opens control valve during spoil disposal, discharged by pool bottom sludge by self-pressure.
Be connected with biogas pipe 13 between gas water separation tank 6 and gas-solid-liquid disengaging zone 4, the biogas in reaction zone 3 introduced gas water separation tank 6, then is discharged by gas water separation tank 6.Be connected with biogas recirculation pipe 12 between gas water separation tank 6 and water distributor 8, biogas introduced taper sludge bulking district 2, by the circulation of biogas, make to form density difference with the external world all the time in taper sludge bulking district 2, ensure to carry out air lift continuously.
The operational process of above-mentioned interior mixing anaerobic retort is:
Waste water enters taper sludge bulking district 2 from water distributor 8, by biogas recirculation pipe 12, biogas is brought into simultaneously, water-mass density in taper sludge bulking district 2 is reduced, so gas-solid-liquid arrives gas water separation tank 6 along stripping tube 11 under the effect of ambient pressure, air release in gas water separation tank 6, water and mud return to again bottom, reaction zone 3 along return line 10 under gravity, anerobe is still there is to organic degraded in reaction zone 3, produce biogas simultaneously, again form gas-solid-liquid, then gas-solid-liquid disengaging zone 4 is risen to together, and realize gas-solid-liquid separation at this by triphase separator, it is external that clear liquid discharges pond through settling region 5 and effluent weir 7 along water shoot 14, mud is under gravity to sedimentation at the bottom of pond, biogas enters gas water separation tank 6 along biogas pipe 13.The granule sludge that pond body 1 produces regularly is discharged outside pond through shore pipe 9.
In taper sludge bulking district 2, sludge concentration is high, gas production rate is large, in reaction zone 3, sludge concentration is low, obvious density difference is formed in stripping tube 11 with outside pipe, mixing wastewater with air liquid is promoted to gas water separation tank 6, mixing wastewater with air liquid in reaction zone 3 rises, and form negative pressure in taper sludge bulking district 2, in reaction zone 3, muddy water mixed solution supplements fast.Taper sludge bulking district 2 makes the place that muddy water mixes fully, mass-transfer efficiency is the highest.In reaction zone 3, microorganism and the abundant absorption degradation of organic pollutant, be the place that pollutant removal is the highest.Gas water separation tank 6 plays the effect connecting taper sludge bulking district 2 and reaction zone 3, object is to allow the organic waste water of high density fully contact with microorganism at short notice, Fast-propagation for particulate matter provides sufficient nutrient material, promote biological self reproducing, simultaneously by washing away at a high speed, shear, form active high granule sludge.
The feature of above-mentioned interior mixing anaerobic retort is aspect ratio little (1:1.5-1:2), highly general below 10 meters, reduces and promotes energy consumption; COD volumetric loading is high, can reach 10 more than kg/m3.d; Available floc sludge starts, and the formation of granule sludge is fast; The flow velocity of reactor bottom water is fast, and mass-transfer efficiency is high, facilitates microorganism and contacts and transmission ofenergy with the effective of pollutent; Water distribution manner, according to the Design Theory of wall jet mechanics, avoids dead angle, overcomes the generation of short flow phenomenon; Methane circulating gas-lifting, reinforcing mass transfer efficiency.Whole system starts fast, and the production rate of granule sludge is high, efficiently solves granule sludge growth in existing anaerobic technique slow, needs the problem of often supplementing.
Case history:
Utilize the UASB(upflow anaerobic sludge blanket reactor of a Φ 5.72*7.5 rice) and the interior mixing anaerobic retort of the present invention's (utility model) of same aspect ratio sewage is processed, water quality and load condition as follows:
UASB: influent COD 12000mg/l, water outlet 3600mg/l, clearance 70%, ph value 5, need add alkali and regulate ph value to 7, water yield 160m3/d, volumetric loading 7.5kg/m3.d.
Interior mixing anaerobic retort: influent COD 12000mg/l, water outlet 400-600mg/l, clearance 95%, pH value enters 5, does not need plus-minus to regulate, and process water yield 160m3/d, volumetric loading reaches 10.2kg/m3.d.

Claims (1)

1. in, a mixing anaerobic retort, comprises tank body, it is characterized in that: tank body is column, and aspect ratio is 1:1.5-1:2, is disposed with taper sludge bulking district, reaction zone, gas-solid-liquid disengaging zone and precipitate and separate exhalant region in tank body from bottom to top, taper sludge bulking district is a cone-shaped hood, gas-solid-liquid is provided with triphase separator in disengaging zone, the top of precipitate and separate exhalant region is provided with effluent weir, effluent weir is provided with rising pipe, the top of tank body is provided with automatic back flow system, this automatic back flow system comprises stripping tube, gas water separation tank and return line, stripping tube one end is connected with taper sludge bulking district, one end is connected with gas water separation tank, return line one end is connected with gas water separation tank, one end extend into bottom, reaction zone, biogas pipe is connected with between gas water separation tank and gas-solid-liquid disengaging zone, biogas recirculation pipe is connected with between gas water separation tank and water distributor, the bottom of tank body is provided with the water distributor stretched in taper sludge bulking district, the bottom of tank body is also provided with shore pipe, shore pipe is provided with mud valve,
During operation, waste water enters taper sludge bulking district from water distributor, enter biogas by biogas recirculation pipe racks simultaneously, under the effect of ambient pressure, gas-solid-liquid arrives gas water separation tank along stripping tube, air release in gas water separation tank, water and mud return to again bottom, reaction zone along return line under gravity, again gas-solid-liquid is formed in reaction zone, then rise to gas-solid-liquid disengaging zone together, and realize gas-solid-liquid separation at this, clear liquid is external through effluent weir discharge pond, mud is under gravity to sedimentation at the bottom of pond, and biogas enters gas water separation tank along biogas pipe;
In taper sludge bulking district, sludge concentration is high, gas production rate is large, in reaction zone, sludge concentration is low, obvious density difference is formed in stripping tube with outside pipe, mixing wastewater with air liquid is promoted to gas water separation tank, mixing wastewater with air liquid in reaction zone rises, and form negative pressure in taper sludge bulking district, in reaction zone, muddy water mixed solution supplements fast; Taper sludge bulking district makes the place that muddy water mixes fully, mass-transfer efficiency is the highest; Microorganism and the abundant absorption degradation of organic pollutant in reaction zone, it is the place that pollutant removal is the highest, gas water separation tank plays the effect connecting taper sludge bulking district and reaction zone, object is to allow the organic waste water of high density fully contact with microorganism at short notice, Fast-propagation for particulate matter provides sufficient nutrient material, promotes biological self reproducing, simultaneously by washing away at a high speed, shear, form active high granule sludge.
CN201310001721.XA 2013-01-05 2013-01-05 Internal-mixing anaerobic reaction tank Active CN103011404B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103408134B (en) * 2013-08-29 2014-12-24 上海齐国环境科技有限公司 Anaerobic sludge bed reactor and method for treating organic waste water by using same
CN103523918B (en) * 2013-10-28 2014-11-05 河北科技大学 Air flow and machinery double-boosting internal circulation-type high suspension solid anaerobic digestion device
CN108675443B (en) * 2018-04-11 2020-12-04 南京大学 Anaerobic granular sludge expanded bed reactor and starting and operating method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201148381Y (en) * 2008-01-18 2008-11-12 甘肃雪晶生化有限责任公司 Internal-external double circulation type high concentrated organic wastewater processing biological anaerobic reactor
CN203007037U (en) * 2013-01-05 2013-06-19 许中华 Internal mixing anaerobic reactor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201148381Y (en) * 2008-01-18 2008-11-12 甘肃雪晶生化有限责任公司 Internal-external double circulation type high concentrated organic wastewater processing biological anaerobic reactor
CN203007037U (en) * 2013-01-05 2013-06-19 许中华 Internal mixing anaerobic reactor

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Application publication date: 20130403

Assignee: Shandong Yilong Environmental Engineering Co., Ltd.

Assignor: Xu Zhonghua

Contract record no.: 2015370000048

Denomination of invention: Internal-mixing anaerobic reaction tank

Granted publication date: 20150107

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Record date: 20150407

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Patentee after: Shandong Xu China Environmental Protection Technology Co., Ltd.

Address before: 250101 Shandong Province, Ji'nan City Industrial Road No. 100 building room 12B01 Shandong Fengrun Yilong Environmental Protection Engineering Co. Ltd.

Patentee before: Xu Zhonghua

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