CN102531307A - Hydrolysis reactor for strengthening sludge utilization and process thereof - Google Patents
Hydrolysis reactor for strengthening sludge utilization and process thereof Download PDFInfo
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- CN102531307A CN102531307A CN2011104381494A CN201110438149A CN102531307A CN 102531307 A CN102531307 A CN 102531307A CN 2011104381494 A CN2011104381494 A CN 2011104381494A CN 201110438149 A CN201110438149 A CN 201110438149A CN 102531307 A CN102531307 A CN 102531307A
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Abstract
The invention provides a hydrolysis reactor for strengthening sludge utilization and a process thereof. The hydrolysis reactor comprises a reactor barrel, wherein an upper layer water distribution device and a lower layer water distribution device are arranged in the reactor barrel so as to form a sludge hydrolysis region and a solid-liquid separation region. According to the invention, the two layers of water distribution devices are used for increasing the residence time of the sludge and strengthening the hydrolysis of the retained sludge, micromolecule organics released by the synchronous hydrolysis of sewage and sludge can be used as high quality carbon source for the subsequent nitrogen and phosphorus removal process, thus the problem of lacking the carbon source in the municipal sewage nitrogen and phosphorus removal process can be alleviated, and the reduction of the sludge can be realized. Besides, two-layer water distribution can not only timely migrate the carbon source released by the sludge hydrolysis region to the upper layer, but also effectively reduce the ascending flow rate of the sludge hydrolysis region, thus the problem of poor removal effect of suspended particulate matters caused by the fact that granule sludge hydrolyzed in the sludge hydrolysis region can be taken away by water outlet can be avoided.
Description
Technical field
The invention belongs to sewage treatment area, be specifically related to hydrolysis reactor and technology thereof that a kind of reinforcement sludge utilizes.
Background technology
Along with being on the rise of water pollution, sewage disposal technology has received attention more and more widely in China.Compared with developed countries, China's town sewage has into water C/N ratio (BOD
5/ TN) remarkable characteristics on the low side, and cause sewage in follow-up denitrification process, to lack enough carbon sources thus.According to statistics, China's town sewage water inlet BOD
5Up to 40%, the clearance of these sewage work's total nitrogens is lower less than sewage work's proportion of 3.0 for/TN ratio, and between 50-80%, the water outlet total nitrogen is difficult to stably reaching standard usually.In order to address this problem, those skilled in the art have proposed the acidication treatment process.
Acidication is handled and is used as one of pretreatment process of sewage usually, in removing sewage, can also decompose the organism in the sewage in the suspended particulate.The principle of acidication is to utilize hydrolysis and acid-producing microorganisms, and the organism of macromole, difficult degradation is decomposed into small organic molecule, discharges carbon source, for follow-up denitrogenation processing creates favorable conditions.In the prior art; Chinese patent document CN10100340 4A discloses a kind of upward flow type composite anaerobic hydrolysis acidizing device; This bottom of device is provided with water inlet pipe; The top is provided with captation, and captation connects rising pipe, and this device is divided into suspended sludge area, mud-water separation district and microbial film stiffened region from bottom to top successively.Wherein, said suspended sludge area is provided with recycle pump, and recycle pump is connected with water inlet pipe with suspended sludge area respectively, forms a circulation loop, and said suspended sludge area also is provided with mud discharging mouth; The mud-water separation district is connected through reducer union with suspended sludge area, is filled with bio-carrier in the microbial film stiffened region.This plant area area is less, when actual motion, is difficult for stopping up, and can reaches higher acidication efficient.
But above-mentioned technology of the prior art is: from bottom to top successively through getting into captation behind suspended sludge area, mud-water separation district and the microbial film stiffened region, flowed out by rising pipe after sewage is got into by water inlet pipe again.In order to satisfy the demand of WWT; The flooding quantity of said acidication technology is bigger usually, and this just makes current have higher upflow velocity, and higher upflow velocity can make the small-particle mud in sludge hydrolytic district discharge with water outlet; Thereby cause muddy water not easily separated; Make the acidication device reduce, also cause small-particle mud shorter simultaneously, influenced the hydrolysis effect of mud in the residence time in sludge hydrolytic district to the removal efficient of suspended particulate.
Summary of the invention
In order to solve acidication device of the prior art when moving; In order to satisfy the demand of WWT; The flooding quantity of said acidication device is bigger usually; This just makes current have higher upflow velocity, and higher upflow velocity can be discharged the small-particle mud in sludge hydrolytic district with water outlet, thereby reduces the problem of acidication device to the hydrolysis effect of the removal efficient of suspended particulate and mud.The invention provides hydrolysis reactor that a kind of reinforcement sludge utilizes and, can effectively improve the removal efficient of suspended particulate and the hydrolysis effect of mud based on the hydrolysis process of this reactor drum.
The hydrolysis reactor of reinforcement sludge utilization of the present invention and the technical scheme of technology thereof are:
The hydrolysis reactor that a kind of reinforcement sludge utilizes comprises:
Reactor shell, said reactor shell is provided with water-in, and the reactor shell bottom is provided with mud discharging mouth, and the top is provided with water outlet;
Be connected with upper strata water-distributing device and lower floor's water-distributing device with said water-in; Said lower floor water-distributing device is arranged on the bottom of said reactor shell; Said upper strata water-distributing device is arranged on the top of said lower floor water-distributing device; In said upper strata water-distributing device and the said sludge hydrolytic district that forms between the two-layer water-distributing device down, between said upper strata water-distributing device and said water outlet, form solid-liquid displacement zone.
The sludge hydrolytic district is 1:1-1:2 with the ratio of the vertical height of said solid-liquid displacement zone.
Perforate on said upper strata water-distributing device and the lower floor's water-distributing device is evenly distributed on the water-distributing device and towards the bottom of said reactor drum and is provided with.
Below the perforate on said upper strata water-distributing device and the lower floor's water-distributing device, be provided with flow deflector.
Distance between at the bottom of the pond of said lower floor water-distributing device and said reactor drum is the 1/40-1/20 of height for reactor.
Sewage forms sludge hydrolytic district and solid-liquid displacement zone in reactor shell, the upflow velocity in said sludge hydrolytic district is less than the upflow velocity of said solid-liquid displacement zone.
The hydrolysis process that described reinforcement sludge utilizes may further comprise the steps:
(1) sewage gets into said reactor shell through the perforate on said water-in and said upper strata water-distributing device, the lower floor's water-distributing device; The upflow velocity of controlling sewage in the said sludge hydrolytic district is 0.1-0.6 m/h, and the upflow velocity of sewage is 0.6-2.0m/h in the said solid-liquid displacement zone;
(2) mud that is settled down to said reactor shell bottom is discharged through said mud discharging mouth; Flow out through said water outlet at the isolated clear water of said solid-liquid displacement zone.
Sewage is 2-6h in the intravital residence time of said reactor cylinder, and the residence time of mud is 10-30d.
The ratio of the flooding quantity of said upper strata water-distributing device and said lower floor water-distributing device is 1.5-4.
In step (1), the upflow velocity of controlling sewage in the said sludge hydrolytic district is 0.2-0.4m/h, and the upflow velocity of sewage is 1-1.5m/h in the said solid-liquid displacement zone.
The hydrolysis reactor of reinforcement sludge utilization of the present invention and the advantage of technology thereof are:
(1) hydrolysis reactor of reinforcement sludge utilization of the present invention; Be connected with two-layer water-distributing device up and down with said water-in; In the said sludge hydrolytic district that forms between the two-layer water-distributing device up and down, between said upper strata water-distributing device and said water outlet, form solid-liquid displacement zone.In the conventional art owing to only one deck water feed apparatus is set; In order to satisfy the demand of WWT; The flooding quantity of said acidication device is bigger usually, and this just makes current have higher upflow velocity, and the small-particle mud of mud district hydrolysis is taken away by water outlet easily.The present invention is through being provided with above-mentioned two-layer water-distributing device; Make that water inlet flows into said sludge hydrolytic district through two-layer water-distributing device and solid-liquid displacement zone is passed through; Water inlet has been realized shunting; Thereby reduced the flooding quantity of lower floor's water-distributing device, can effectively reduce the upflow velocity in sludge hydrolytic district, thereby avoided that the removal efficient of the suspended particulate that causes is low, the problem of sludge hydrolytic weak effect because of the small-particle mud of mud district hydrolysis is taken away by water outlet easily.
(2) hydrolysis reactor that utilizes of reinforcement sludge of the present invention, the ratio that said sewage hydrolyzing district and the vertical height of said solid-liquid displacement zone are set is 1:1-1:2.If it is too small that this ratio is provided with, then the height of said solid-liquid displacement zone is less, makes the muddy water of said solid-liquid displacement zone be difficult for thoroughly being separated; And if that this ratio is provided with is excessive, the height in then said sludge hydrolytic district is less, makes that the decomposition reaction in the said sludge hydrolytic district is thorough inadequately, influences the release of organism carbon source.The present invention is 1:1-1:2 through the ratio that said sewage hydrolyzing district and the vertical height of said solid-liquid displacement zone are set, and has effectively avoided above-mentioned two kinds of situation.
(3) hydrolysis reactor of reinforcement sludge utilization of the present invention; Perforate on said upper strata water-distributing device and the lower floor's water-distributing device is set to be evenly distributed on the water-distributing device and towards the bottom of said reactor drum and to be provided with; Reason is that said perforate is provided with towards the bottom of said reactor drum, and the mud that helps the sludge hydrolytic district keeps suspended state.As preferred embodiment, the present invention also is provided with flow deflector below the perforate on said upper strata water-distributing device and the lower floor's water-distributing device, and said flow deflector can play the buffered effect to the water outlet of said water-distributing device.
(4) hydrolysis reactor of reinforcement sludge utilization of the present invention; Distance between at the bottom of the pond of said lower floor water-distributing device and said reactor drum is 150mm～200mm; Reason is because the bottom sand grain content is high; So this distance can guarantee water distributor and can not covered by the silt layer that the hydraulic action of water distributor can also let the mud of bottom keep suspended state in addition, helps the decomposition of mud basically.
The hydrolysis process that reinforcement sludge of the present invention utilizes can the reinforcement sludge hydrolysis discharge carbon source, and under the action of microorganisms, the larger molecular organics in the mud is broken down into small organic molecule in the sludge hydrolytic district.In the said technology; Step (1) sewage gets into said reactor shell through the perforate on said water-in and the two-layer up and down water-distributing device; The upflow velocity of controlling sewage in the said sludge hydrolytic district is 0.1-0.6m/h, and the upflow velocity of sewage is 0.6-2.0m/h in the said solid-liquid displacement zone; The upflow velocity of sewage in said sludge hydrolytic district is lower among the present invention; Prevent that suspended particle wherein from being taken out of by flowing water; Improve the hydrolysis time of mud simultaneously; The hydrolysis degree of reinforcement sludge has promptly realized removing the function of suspended particulate, can utilize sludge hydrolytic to discharge carbon source again and solve the insufficient problem of follow-up denitrification process carbon source.But what the upflow velocity of sewage can not be provided with in the said sludge hydrolytic district is low excessively; Reason is that the water inlet of lower floor water-distributing device can play the turbulent effect to the mud in the sludge hydrolytic district; Thereby the decomposition rate of larger molecular organics in the raising mud, so the upflow velocity that the present invention is provided with sewage in the said sludge hydrolytic district is 0.1-0.6m/h.As preferred embodiment, the upflow velocity that the present invention also further sets sewage in the said sludge hydrolytic district is 0.2-0.4m/h, and the upflow velocity of sewage is 1-1.5m/h in the said solid-liquid displacement zone.
The hydrolysis process that reinforcement sludge of the present invention utilizes; The ratio of the flooding quantity of said upper strata water-distributing device and said lower floor water-distributing device is 1.5-4; If it is too small that this ratio is provided with; Then the flooding quantity of lower floor's water-distributing device is relatively large, makes sewage shorter in the residence time in the sludge hydrolytic district of lower floor, is unfavorable for the decomposition of mud; And if this ratio setting is excessive; Then the flooding quantity of lower floor's water-distributing device is less relatively; This carbon source that can make sludge hydrolytic distinguish again and separate is difficult for being taken out of, and the speed of output carbon source is slower, and the ratio of the flooding quantity of the present invention through limiting said upper strata water-distributing device and said lower floor water-distributing device is 1.5-4; When guaranteeing dwell time of sewage, also make carbon source exported easily.
Description of drawings
In order to make the technical scheme described in the present invention be convenient to more understand, will combine embodiment that the hydrolysis reactor and the technology thereof of reinforcement sludge utilization of the present invention are done further elaboration below.
Shown in Figure 1 is the structure iron of hydrolysis reactor of the present invention;
Shown in Figure 2 is the structure iron that is provided with the hydrolysis reactor of flow deflector of the present invention;
The 1-water-in; The 2-mud discharging mouth; The 3-water outlet; 4-upper strata water-distributing device; 5-lower floor water-distributing device; 6-sludge hydrolytic district; The 7-solid-liquid displacement zone; 8,9-flow deflector; The 10-effluent weir.
Embodiment
Embodiment 1
Hydrolysis reactor of the present invention is as shown in Figure 1, comprising:
Reactor shell, said reactor shell is provided with water-in 1, and the reactor shell bottom is provided with mud discharging mouth 2, and the top is provided with water outlet 3, and the height of said reactor shell is 4m;
Be connected with upper strata water-distributing device 4 and lower floor's water-distributing device 5 with said water-in 1; Said lower floor water-distributing device 5 is arranged on the bottom of said reactor shell; Said upper strata water-distributing device 4 is arranged on the top of said lower floor water-distributing device 5; In said upper strata water-distributing device 4 and the said sludge hydrolytic district 6 that forms between the two-layer water-distributing device down; Between said upper strata water-distributing device 4 and said water outlet 3, form solid-liquid displacement zone 7, said sewage hydrolyzing district is 1:3 with the ratio of the vertical height of said solid-liquid displacement zone 7, and the distance between at the bottom of the pond of said lower floor water-distributing device 5 and said reactor drum is 300mm.
Hydrolysis process based on the hydrolysis reactor in the present embodiment may further comprise the steps:
(1) the sewage flooding quantity of said hydrolysis reactor is 100t/d, and sewage gets into said reactor shell through the perforate on said water-in 1 and the two-layer up and down water-distributing device, and the ratio of the flooding quantity of said upper strata water-distributing device 4 and lower floor's water-distributing device 5 is 6; The upflow velocity of controlling sewage in the said sludge hydrolytic district 6 is 0.1 ~ 0.6m/h, and the upflow velocity of sewage is 0.6 ~ 2.0m/h in the said solid-liquid displacement zone 7;
(2) in said solid-liquid displacement zone 7, the suspended particle in the sewage is settled down to sludge hydrolytic district 6 under the effect of gravity; Under the action of microorganisms, the larger molecular organics in the mud is broken down into small organic molecule in said sludge hydrolytic district 6;
(3) decompose the remaining sludge settling in back to said reactor shell bottom, discharge through said mud discharging mouth 2; Flow out through said water outlet 3 at said solid-liquid displacement zone 7 isolated clear water; Sewage is 2h in the intravital residence time of said reactor cylinder, and the residence time of mud is 10d.
Hydrolysis reactor of the present invention is as shown in Figure 1, comprising:
Reactor shell, said reactor shell is provided with water-in 1, and the reactor shell bottom is provided with mud discharging mouth 2, and the top is provided with water outlet 3, and the height of said reactor shell is 4m;
Be connected with upper strata water-distributing device 4 and lower floor's water-distributing device 5 with said water-in 1; Said lower floor water-distributing device 5 is arranged on the bottom of said reactor shell; Said upper strata water-distributing device 4 is arranged on the top of said lower floor water-distributing device 5; In said upper strata water-distributing device 4 and the said sludge hydrolytic district 6 that forms between the two-layer water-distributing device down; Between said upper strata water-distributing device 4 and said water outlet 3, form solid-liquid displacement zone 7, said sewage hydrolyzing district is 1:3 with the ratio of the vertical height of said solid-liquid displacement zone 7, and the distance between at the bottom of the pond of said lower floor water-distributing device 5 and said reactor drum is 300mm.
Hydrolysis process based on the hydrolysis reactor in the present embodiment may further comprise the steps:
(1) the sewage flooding quantity of said hydrolysis reactor is 100t/d, and sewage gets into said reactor shell through the perforate on said water-in 1 and the two-layer up and down water-distributing device, and the ratio of the flooding quantity of said upper strata water-distributing device 4 and lower floor's water-distributing device 5 is 1.5; The upflow velocity of controlling sewage in the said sludge hydrolytic district 6 is 0.2 ~ 0.4m/h, and the upflow velocity of sewage is 1 ~ 1.5m/h in the said solid-liquid displacement zone 7;
(2) in said solid-liquid displacement zone 7, the suspended particle in the sewage is settled down to sludge hydrolytic district 6 under the effect of gravity; Under the action of microorganisms, the larger molecular organics in the mud is broken down into small organic molecule in said sludge hydrolytic district 6;
(3) decompose the remaining sludge settling in back to said reactor shell bottom, discharge through said mud discharging mouth 2; Flow out through said water outlet 3 at said solid-liquid displacement zone 7 isolated clear water; Sewage is 6h in the intravital residence time of said reactor cylinder, and the residence time of mud is 30d.
Embodiment 3
Hydrolysis reactor of the present invention is as shown in Figure 1, comprising:
Reactor shell, said reactor shell is provided with water-in 1, and the reactor shell bottom is provided with mud discharging mouth 2, and the top is provided with water outlet 3, and the height of said reactor shell is 4m;
Be connected with upper strata water-distributing device 4 and lower floor's water-distributing device 5 with said water-in 1; Said lower floor water-distributing device 5 is arranged on the bottom of said reactor shell; Said upper strata water-distributing device 4 is arranged on the top of said lower floor water-distributing device 5; In said upper strata water-distributing device 4 and the said sludge hydrolytic district 6 that forms between the two-layer water-distributing device down; Between said upper strata water-distributing device 4 and said water outlet 3, form solid-liquid displacement zone 7, said sewage hydrolyzing district is 1:0.8 with the ratio of the vertical height of said solid-liquid displacement zone 7, and the distance between at the bottom of the pond of said lower floor water-distributing device 5 and said reactor drum is 300mm.
Hydrolysis process based on the hydrolysis reactor in the present embodiment may further comprise the steps:
(1) the sewage flooding quantity of said hydrolysis reactor is 100t/d, and sewage gets into said reactor shell through the perforate on said water-in 1 and the two-layer up and down water-distributing device, and the ratio of the flooding quantity of said upper strata water-distributing device 4 and lower floor's water-distributing device 5 is 4; The upflow velocity of controlling sewage in the said sludge hydrolytic district 6 is 0.2 ~ 0.4m/h, and the upflow velocity of sewage is 1 ~ 1.5m/h in the said solid-liquid displacement zone 7;
(2) in said solid-liquid displacement zone 7, the suspended particle in the sewage is settled down to sludge hydrolytic district 6 under the effect of gravity; Under the action of microorganisms, the larger molecular organics in the mud is broken down into small organic molecule in said sludge hydrolytic district 6;
(3) decompose the remaining sludge settling in back to said reactor shell bottom, discharge through said mud discharging mouth 2; Flow out through said water outlet 3 at said solid-liquid displacement zone 7 isolated clear water; Sewage is 3h in the intravital residence time of said reactor cylinder, and the residence time of mud is 15d.
Hydrolysis reactor of the present invention is as shown in Figure 1, comprising:
Reactor shell, said reactor shell is provided with water-in 1, and the reactor shell bottom is provided with mud discharging mouth 2, and the top is provided with water outlet 3, and the height of said reactor shell is 6m.
Be connected with upper strata water-distributing device 4 and lower floor's water-distributing device 5 with said water-in 1; Said lower floor water-distributing device 5 is arranged on the bottom of said reactor shell; Said upper strata water-distributing device 4 is arranged on the top of said lower floor water-distributing device 5; In said upper strata water-distributing device 4 and the said sludge hydrolytic district 6 that forms between the two-layer water-distributing device down; Between said upper strata water-distributing device 4 and said water outlet 3, form solid-liquid displacement zone 7, said sewage hydrolyzing district is 1:2 with the ratio of the vertical height of said solid-liquid displacement zone 7, and the distance between at the bottom of the pond of said lower floor water-distributing device 5 and said reactor drum is 150mm.Perforate on the water-distributing device of upper strata described in the present embodiment 4 and the lower floor's water-distributing device 5 is evenly distributed on the water-distributing device and towards the bottom of said reactor drum and is provided with.
Hydrolysis process based on the hydrolysis reactor in the present embodiment may further comprise the steps:
(1) the sewage flooding quantity of said hydrolysis reactor is 100t/d, and sewage gets into said reactor shell through the perforate on said water-in 1 and the two-layer up and down water-distributing device, and the ratio of the flooding quantity of said upper strata water-distributing device 4 and lower floor's water-distributing device 5 is 4; The upflow velocity of controlling sewage in the said sludge hydrolytic district 6 is 0.2 ~ 0.4m/h, and the upflow velocity of sewage is 1 ~ 1.5m/h in the said solid-liquid displacement zone 7;
(2) in said solid-liquid displacement zone 7, the suspended particle in the sewage is settled down to sludge hydrolytic district 6 under the effect of gravity; Under the action of microorganisms, the larger molecular organics in the mud is broken down into small organic molecule in said sludge hydrolytic district 6;
(3) decompose the remaining sludge settling in back to said reactor shell bottom, discharge through said mud discharging mouth 2; Flow out through said water outlet 3 at said solid-liquid displacement zone 7 isolated clear water; Sewage is 3h in the intravital residence time of said reactor cylinder, and the residence time of mud is 15d.
Hydrolysis reactor of the present invention is as shown in Figure 2, comprising:
Reactor shell; Said reactor shell is provided with water-in 1; The reactor shell bottom is provided with mud discharging mouth 2, and the top is provided with water outlet 3, and the height of said reactor shell is 6m; Also be provided with effluent weir 10 at said reactor shell top, said effluent weir 10 is connected with said water outlet 3.
Be connected with upper strata water-distributing device 4 and lower floor's water-distributing device 5 with said water-in 1; Said lower floor water-distributing device 5 is arranged on the bottom of said reactor shell; Said upper strata water-distributing device 4 is arranged on the top of said lower floor water-distributing device 5; In said upper strata water-distributing device 4 and the said sludge hydrolytic district 6 that forms between the two-layer water-distributing device down; Between said upper strata water-distributing device 4 and said water outlet 3, form solid-liquid displacement zone 7, said sewage hydrolyzing district is 1:1 with the ratio of the vertical height of said solid-liquid displacement zone 7, and the distance between at the bottom of the pond of said lower floor water-distributing device 5 and said reactor drum is 300mm.Perforate on the water-distributing device of upper strata described in the present embodiment 4 and the lower floor's water-distributing device 5 is evenly distributed on the water-distributing device and towards the bottom of said reactor drum and is provided with, and the perforate below on the water-distributing device of upper strata described in the present embodiment 4 and the lower floor's water-distributing device 5 is provided with flow deflector 8,9.
Hydrolysis process based on the hydrolysis reactor in the present embodiment may further comprise the steps:
(1) the sewage flooding quantity of said hydrolysis reactor is 100t/d, and sewage gets into said reactor shell through the perforate on said water-in 1 and the two-layer up and down water-distributing device, and the ratio of the flooding quantity of said upper strata water-distributing device 4 and lower floor's water-distributing device 5 is 1.5; The upflow velocity of controlling sewage in the said sludge hydrolytic district 6 is 0.2 ~ 0.4m/h, and the upflow velocity of sewage is 1 ~ 1.5m/h in the said solid-liquid displacement zone 7;
(2) in said solid-liquid displacement zone 7, the suspended particle in the sewage is settled down to sludge hydrolytic district 6 under the effect of gravity; Under the action of microorganisms, the larger molecular organics in the mud is broken down into small organic molecule in said sludge hydrolytic district 6;
(3) decompose the remaining sludge settling in back to said reactor shell bottom, discharge through said mud discharging mouth 2; Flow out through said water outlet 3 at said solid-liquid displacement zone 7 isolated clear water; Sewage is 3h in the intravital residence time of said reactor cylinder, and the residence time of mud is 15d.
Experimental example
In order to confirm technique effect of the present invention, we measure the water-quality guideline before and after handling through hydrolysis reactor of the present invention under same influent quality condition, and the result is following:
Can find out from above-mentioned data; The clearance of solid suspended particle described in the embodiment 1-5 is respectively 81.58%, 82.85%, 84.70%, 84.88% and 86.68%,, the ratio of the total COD of solvability COD/ is handled the back has increased by 29.54%, 32.45%, 34.64%, 36.3% and 39.4% respectively before than processing.
Comparative Examples
In order further to confirm technique effect of the present invention; The present invention also is provided with Comparative Examples, and the hydrolysis reactor of said Comparative Examples comprises: reactor shell, and the bottom of said reactor shell is provided with water-in and mud discharging mouth; The top is provided with water outlet, and the height of said reactor shell is 4m;
Be connected with one deck water-distributing device with said water-in; Between said water-distributing device and said water outlet, form sludge hydrolytic district and solid-liquid displacement zone successively; Said sewage hydrolyzing district is 1:1 with the ratio of the vertical height of said solid-liquid displacement zone, and the distance between at the bottom of the pond of said lower floor water-distributing device and said reactor drum is 150mm.
Hydrolysis process based on the hydrolysis reactor of Comparative Examples may further comprise the steps:
(1) the sewage flooding quantity of said hydrolysis reactor is 100t/d, and sewage gets into said reactor shell through the perforate on the said water-distributing device; The upflow velocity of sewage is 2.0m/h in the said sludge hydrolytic district, and the upflow velocity of sewage is 1.7m/h in the said solid-liquid displacement zone;
(2) in said solid-liquid displacement zone, the suspended particle in the sewage is settled down to the sludge hydrolytic district under the effect of gravity; Under the action of microorganisms, the larger molecular organics in the mud is broken down into small organic molecule in said sludge hydrolytic district;
(3) decompose the remaining sludge settling in back to said reactor shell bottom, discharge through said mud discharging mouth; Flow out through said water outlet at the isolated clear water of said solid-liquid displacement zone; Sewage is 3h in the intravital residence time of said reactor cylinder, and the residence time of mud is 10d.
With experimental example under the same influent quality condition, the water-quality guideline before and after handling through the described hydrolysis reactor of Comparative Examples is measured, the result is following:
Can find out that from above-mentioned data the clearance of solid suspended particle described in the Comparative Examples is 71.69 %, the ratio of the total COD of solvability COD/ is handled the back has increased by 17.51% before handling, and the sludge hydrolytic rate is 40.12%.The increment rate of the clearance of solid suspended particle, the total COD of solvability COD/ and sludge hydrolytic rate all are lower than experimental example in the said Comparative Examples, and the hydrolysis reactor and the technology thereof of visible reinforcement sludge utilization of the present invention are superior to hydrolysis reactor and technology thereof in the Comparative Examples.
Though the present invention has carried out detailed elaboration through embodiment to it; But; Any form that does not exceed the claim protection domain that those skilled in the art should be understood that on this basis to be made and the variation of details all belong to invention which is intended to be protected.
Claims (10)
1. the hydrolysis reactor that utilizes of a reinforcement sludge comprises:
Reactor shell, said reactor shell is provided with water-in, and the reactor shell bottom is provided with mud discharging mouth, and the top is provided with water outlet;
It is characterized in that,
Be connected with upper strata water-distributing device and lower floor's water-distributing device with said water-in; Said lower floor water-distributing device is arranged on the bottom of said reactor shell; Said upper strata water-distributing device is arranged on the top of said lower floor water-distributing device; In said upper strata water-distributing device and the said sludge hydrolytic district that forms between the two-layer water-distributing device down, between said upper strata water-distributing device and said water outlet, form solid-liquid displacement zone.
2. the hydrolysis reactor that reinforcement sludge according to claim 1 and 2 utilizes is characterized in that the sludge hydrolytic district is 1:1-1:2 with the ratio of the vertical height of said solid-liquid displacement zone.
3. according to claim 1 and the hydrolysis reactor that 2 described reinforcement sludges utilize, it is characterized in that the perforate on said upper strata water-distributing device and the lower floor's water-distributing device is evenly distributed on the water-distributing device and towards the bottom of said reactor drum and is provided with.
4. the hydrolysis reactor that reinforcement sludge according to claim 3 utilizes is characterized in that, below the perforate on said upper strata water-distributing device and the lower floor's water-distributing device, is provided with flow deflector.
5. the hydrolysis reactor that utilizes according to claim 1 or 4 described reinforcement sludges is characterized in that, the distance between at the bottom of the pond of said lower floor water-distributing device and said reactor drum is the 1/40-1/20 of height for reactor.
6. the hydrolysis process that reinforcement sludge utilizes is characterized in that sewage forms sludge hydrolytic district and solid-liquid displacement zone in reactor shell, and the upflow velocity in said sludge hydrolytic district is less than the upflow velocity of said solid-liquid displacement zone.
7. the hydrolysis process that reinforcement sludge according to claim 6 utilizes may further comprise the steps:
(1) sewage gets into said reactor shell through the perforate on said water-in and said upper strata water-distributing device, the lower floor's water-distributing device; The upflow velocity of controlling sewage in the said sludge hydrolytic district is 0.1-0.6 m/h, and the upflow velocity of sewage is 0.6-2.0m/h in the said solid-liquid displacement zone;
(2) mud that is settled down to said reactor shell bottom is discharged through said mud discharging mouth; Flow out through said water outlet at the isolated clear water of said solid-liquid displacement zone.
8. according to the hydrolysis process of claim 6 or 7 described reinforcement sludges utilizations, it is characterized in that sewage is 2-6h in the intravital residence time of said reactor cylinder, the residence time of mud is 10-30d.
9. according to the hydrolysis process of claim 6 or 7 described reinforcement sludges utilizations, it is characterized in that the ratio of the flooding quantity of said upper strata water-distributing device and said lower floor water-distributing device is 1.5-4.
10. the hydrolysis process that reinforcement sludge according to claim 9 utilizes is characterized in that in step (1), the upflow velocity of controlling sewage in the said sludge hydrolytic district is 0.2-0.4m/h, and the upflow velocity of sewage is 1-1.5m/h in the said solid-liquid displacement zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110438149 CN102531307B (en) | 2011-12-23 | 2011-12-23 | Hydrolysis reactor for strengthening sludge utilization and process thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040009980A (en) * | 2002-07-26 | 2004-01-31 | 강선홍 | Anaerobic rotary reactor |
| CN2605251Y (en) * | 2003-03-21 | 2004-03-03 | 鲁解平 | Speed-variable flow-raising type anaerobic hydrolytic reactor |
| CN201330196Y (en) * | 2009-01-23 | 2009-10-21 | 北京基亚特环保工程有限公司 | Anaerobic reactor water distributing system |
| CN102020353A (en) * | 2009-09-14 | 2011-04-20 | 原保群 | Hydrolysis and acidification reactor for high-concentration sludge bed |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040009980A (en) * | 2002-07-26 | 2004-01-31 | 강선홍 | Anaerobic rotary reactor |
| CN2605251Y (en) * | 2003-03-21 | 2004-03-03 | 鲁解平 | Speed-variable flow-raising type anaerobic hydrolytic reactor |
| CN201330196Y (en) * | 2009-01-23 | 2009-10-21 | 北京基亚特环保工程有限公司 | Anaerobic reactor water distributing system |
| CN102020353A (en) * | 2009-09-14 | 2011-04-20 | 原保群 | Hydrolysis and acidification reactor for high-concentration sludge bed |
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