CN102849913A - Sludge hydrolysis acidification system using membrane bioreactor - Google Patents
Sludge hydrolysis acidification system using membrane bioreactor Download PDFInfo
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- CN102849913A CN102849913A CN2012103680099A CN201210368009A CN102849913A CN 102849913 A CN102849913 A CN 102849913A CN 2012103680099 A CN2012103680099 A CN 2012103680099A CN 201210368009 A CN201210368009 A CN 201210368009A CN 102849913 A CN102849913 A CN 102849913A
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Abstract
The invention discloses a sludge hydrolysis acidification system using a membrane bioreactor and relates to the technical field of sludge hydrolysis acidification and hydrolysate separation in sewage treatment plants. A sludge discharge outlet of a sludge hydrolysis acidification tank is connected with a feed inlet of a membrane inlet screw pump, a concentrated solution discharge port of a membrane module is connected to the inside of the sludge hydrolysis acidification tank, a diffusate discharge port of the membrane module is connected with a hydrolysis acidizing fluid discharge pipe, and a discharge port of a line cleaning system is connected to the inside of a stainless steel membrane casing of the membrane module through a dosing pump. According to the sludge hydrolysis acidification system using the membrane bioreactor, the reacted sludge enters the membrane module through the membrane inlet screw pump, a hydrolysis acidizing fluid is obtained at a port of the hydrolysis acidizing fluid discharge pipe and then enters a next treating procedure, a concentrated solution of the membrane module flows back into the sludge hydrolysis acidification tank, and higher microorganism concentration in the tank is continuously maintained. By means of the line cleaning system, service life of the membrane module can be prolonged, and membrane flux of the membrane module can be improved.
Description
Technical field
The present invention relates to the acidication of sludge of sewage treatment plant and separating of hydrolyzed solution, be specifically related to application and the system and device thereof of a kind of membrane bioreactor in sludge hydrolysis, acidification.
Background technology
Mud is the by product that produces in municipal sewage plant's sewage treatment process, and there is " the light mud of heavy water " phenomenon in China's construction of municipal effluent plant, and most mud can not get the processing disposal of safe and reasonable all the time.
The acidication of mud is processed, to come lignin-sludge with biochemical mode, it has utilized the acidication stage in the anaerobic sludge digestion, organic matter in the mud becomes low-molecular-weight organic acid under anaerobism and certain temperature effect, dehydration property and the stability of mud have been improved, destroy and controlled the pathogenic microorganism in the mud, reduced the volume of mud, to have established technique basic for follow-up processing such as dehydration that further utilize useful component in the mud and mud.
Mud carries out the anaerobic hydrolysis-acidification reaction in hydrolization and acidification tank, for its acidication liquid of later use, the reacted muddy water of acidication need to be separated, its existing separation for sludge hydrolysis, acidification liquid, namely the method for mud-water separation has: centrifugal separation, filter-cloth filtering method and filter press method.
Centrifugal separation is exactly that the muddy water mixed solution behind the acidication is pumped into whizzer, under the effect of centrifugal force, realize mud-water separation, but whizzer can not realize continuous separate from, to advancing mud concentration certain requirement is arranged, difficult cleaning when appearance mud hardens, and in order to improve separation efficiency, its power consumption meeting increases.
The filter-cloth filtering method is exactly by the filter cloth bag strainer with mud, mud is stayed in the cloth bag, acidication liquid is separated through the space of filter cloth, filtration for some time is in the time of can not refiltering, the mud that is accumulated on the filter cloth needs the labor cleaning, whole operating condition is poor, and separation efficiency is very low, is not suitable for mud-water separation.
The filter press method is pumped into muddy water mixed solution exactly plate-and-frame filter press and carries out mud-water separation, and this method occupational health condition is poor, because this mud is biochemical reacted mud liquid, viscosity is very large, cause separation efficiency low, and isolated acidication liquid vulnerable to pollution, the difficult cleaning of follow-up mud cake.
Summary of the invention
The present invention seeks to propose application and the system and device thereof of a kind of membrane bioreactor in sludge hydrolysis, acidification in order to overcome the drawback of existing sludge hydrolysis, acidification liquid separating method.
The present invention includes sludge hydrolysis, acidification tank, film separating system and on-line cleaning system; In described sludge hydrolysis, acidification tank stirring mechanism is set, in described sludge hydrolysis, acidification tank upper end sludge inlet is set, the lower end arranges the mud discharge port; Described film separating system comprises into the film spiral pump, also comprises the membrane module that is comprised of stainless steel putamina and membrane element, and the described discharge port that advances the film spiral pump links to each other with the opening for feed of membrane module; Described on-line cleaning system comprises sour grug feeding jar, alkali grug feeding jar, clean water tank and strong oxidizer tank; The mud discharge port that it is characterized in that described sludge hydrolysis, acidification tank is connected with the described opening for feed that advances the film spiral pump, the concentrated solution relief outlet of described membrane module is connected in the described sludge hydrolysis, acidification tank, at the transudate relief outlet connection acidication liquid vent pipe of described membrane module; The relief outlet of the sour grug feeding jar of described line cleaning system, alkali grug feeding jar, clean water tank and strong oxidizer tank is connected in the stainless steel putamina of described membrane module by dosing pump.
The present invention will carry out anaerobic reaction by the excess sludge of municipal sewage plant that sludge inlet enters by the sludge hydrolysis, acidification tank, organic matter obtains degraded in the mud, reacted mud enters membrane module by advancing the film spiral pump, obtain acidication liquid at the acidication liquid discharge mouth of pipe and enter next handling procedure, the present invention is back to the concentrated solution of membrane element in the sludge hydrolysis, acidification tank, continues to keep microorganism concn higher in the tank.In order to improve the work-ing life of membrane module, the present invention also carries out regeneration washing by the on-line cleaning system to membrane module, so that membrane module recovers membrane flux.
Compared with prior art, the advantage that has of the present invention is:
1, is the external membrane biological reaction apparatus with sludge hydrolysis, acidification tank, film separating system and on-line cleaning design of system integration, so that sludge hydrolysis, acidification, mud-water separation, on-line cleaning are integrated, is easy to realize automatic control, convenient operation and management.
2, film bioreactor device can be realized the continuous charging and discharging running, has improved the efficient of system's lignin-sludge.
3, adopting ceramic membrane is filtering unit, and separation accuracy can reach 0.2 μ m, that is to say, the efficient of mud-water separation is very high.
4, the concentrated solution through membrane filtration is back to hydrolization and acidification tank, the loss of microorganism in the hydrolization and acidification tank has been avoided in such backflow design, can keep high sludge concentration in the retort, thereby can improve volume load, reduce sludge loading, realized that reactor sludge age STR separates with the thorough of hydraulic detention time HRT.
5, hydrolization and acidification tank adopts covering design, and ceramic membrane is installed in the stainless steel putamina, withstand voltage safety.Whole membrane bioreactor does not exist mud, sewage to expose problem, sanitation and hygiene, and operating condition is good.
6, which kind of filtering separation mode no matter all exists the pollutent accumulation to need this problem of backwash and regeneration, and backwash and regeneration mode shown in the present can be carried out on-line cleaning to ceramic membrane, does not need the artificial pollutent of removing accumulation.
The preferred membrane element of the present invention is the inorganic ceramic membrane element.
Description of drawings
Fig. 1 is structure principle chart of the present invention.
Embodiment
As shown in Figure 1, the 1 interior setting of sludge hydrolysis, acidification tank is provided the stirring mechanism 11 of power by motor, in sludge hydrolysis, acidification tank 1 upper end sludge inlet 12 is set, the lower end arranges mud discharge port 13, also can mud discharging mouth 14 be set in sludge hydrolysis, acidification tank 1 lower end.
The ceramic membrane separation system comprises into film spiral pump 21, also comprises a plurality of ceramic film components 22 that are comprised of stainless steel putamina and inorganic ceramic membrane element.The discharge port that advances film spiral pump 21 links to each other with the opening for feed of each ceramic film component 22.
The on-line cleaning system mainly is comprised of sour grug feeding jar 31, alkali grug feeding jar 32, clean water tank 33 and strong oxidizer tank 34.
The mud discharge port 13 of sludge hydrolysis, acidification tank 1 is connected with the opening for feed that advances film spiral pump 21 by pipeline, the concentrated solution relief outlet of each ceramic film component 22 is connected in the sludge hydrolysis, acidification tank 1 by pipeline 4, at the transudate relief outlet connection acidication liquid vent pipe 5 of each ceramic film component 22.
The relief outlet of the sour grug feeding jar 31 of line cleaning system, alkali grug feeding jar 32, clean water tank 33 and strong oxidizer tank 34 is connected in each ceramic film component 22 by four dosing pumps 6 respectively.
The present invention also can adopt intelligent control system.The automatic start-stop that comprises pump, collection and the transmission of liquid level, ORP, temperature and data on flows in the hydrolization and acidification tank have demonstration, analysis, comprehensive, the function of preserving and printing, and can realize remote monitoring and automatically control.
Claims (2)
1. a sludge hydrolysis, acidification system that adopts membrane bioreactor comprises: sludge hydrolysis, acidification tank, film separating system and on-line cleaning system; In described sludge hydrolysis, acidification tank stirring mechanism is set, in described sludge hydrolysis, acidification tank upper end sludge inlet is set, the lower end arranges the mud discharge port; Described film separating system comprises into the film spiral pump, also comprises the membrane module that is comprised of stainless steel putamina and membrane element, and the described discharge port that advances the film spiral pump links to each other with the opening for feed of membrane module; Described on-line cleaning system comprises sour grug feeding jar, alkali grug feeding jar, clean water tank and strong oxidizer tank; The mud discharge port that it is characterized in that described sludge hydrolysis, acidification tank is connected with the described opening for feed that advances the film spiral pump, the concentrated solution relief outlet of described membrane module is connected in the described sludge hydrolysis, acidification tank, at the transudate relief outlet connection acidication liquid vent pipe of described membrane module; The relief outlet of the sour grug feeding jar of described line cleaning system, alkali grug feeding jar, clean water tank and strong oxidizer tank is connected in the stainless steel putamina of described membrane module by dosing pump.
2. the sludge hydrolysis, acidification system of described employing membrane bioreactor according to claim 1 is characterized in that described membrane element is the inorganic ceramic membrane element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103680099A CN102849913A (en) | 2012-09-27 | 2012-09-27 | Sludge hydrolysis acidification system using membrane bioreactor |
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| CN2012103680099A CN102849913A (en) | 2012-09-27 | 2012-09-27 | Sludge hydrolysis acidification system using membrane bioreactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609554A (en) * | 2015-01-12 | 2015-05-13 | 国家电网公司 | Purification device and method for reclaiming and reusing breeding wastewater |
| CN110713255A (en) * | 2019-11-20 | 2020-01-21 | 中科院建筑设计研究院有限公司 | Device and method for reducing pollution of plate-type ceramic membrane of anaerobic membrane bioreactor |
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| CN1406885A (en) * | 2001-09-06 | 2003-04-02 | 同济大学 | Organic sludge hypoxemia digestion-membrane separation treating process |
| US20050109694A1 (en) * | 2003-11-21 | 2005-05-26 | Industrial Technology Research Institute | Method and system for treating wastewater containing organic compounds |
| CN1772355A (en) * | 2005-11-11 | 2006-05-17 | 清华大学 | On-line chemical cleaning method for membrane bioreactor |
| CN101838069A (en) * | 2010-04-29 | 2010-09-22 | 湖南恒辉膜技术有限公司 | Method for treating chemi-mechanical pulp pressing filtrate in papermaking factory |
| CN101851049A (en) * | 2010-06-02 | 2010-10-06 | 清华大学 | Online ultrasonic anaerobic membrane biological reaction system used for sludge digestion and operation method thereof |
| CN102785929A (en) * | 2012-05-26 | 2012-11-21 | 中山市平连精机科技有限公司 | Horizontal type cigarette carton sorting mechanism |
| CN202785929U (en) * | 2012-09-27 | 2013-03-13 | 扬州澄露环境工程有限公司 | Sludge hydrolytic acidification system adopting membrane bioreactor |
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2012
- 2012-09-27 CN CN2012103680099A patent/CN102849913A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1406885A (en) * | 2001-09-06 | 2003-04-02 | 同济大学 | Organic sludge hypoxemia digestion-membrane separation treating process |
| US20050109694A1 (en) * | 2003-11-21 | 2005-05-26 | Industrial Technology Research Institute | Method and system for treating wastewater containing organic compounds |
| CN1772355A (en) * | 2005-11-11 | 2006-05-17 | 清华大学 | On-line chemical cleaning method for membrane bioreactor |
| CN101838069A (en) * | 2010-04-29 | 2010-09-22 | 湖南恒辉膜技术有限公司 | Method for treating chemi-mechanical pulp pressing filtrate in papermaking factory |
| CN101851049A (en) * | 2010-06-02 | 2010-10-06 | 清华大学 | Online ultrasonic anaerobic membrane biological reaction system used for sludge digestion and operation method thereof |
| CN102785929A (en) * | 2012-05-26 | 2012-11-21 | 中山市平连精机科技有限公司 | Horizontal type cigarette carton sorting mechanism |
| CN202785929U (en) * | 2012-09-27 | 2013-03-13 | 扬州澄露环境工程有限公司 | Sludge hydrolytic acidification system adopting membrane bioreactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104609554A (en) * | 2015-01-12 | 2015-05-13 | 国家电网公司 | Purification device and method for reclaiming and reusing breeding wastewater |
| CN110713255A (en) * | 2019-11-20 | 2020-01-21 | 中科院建筑设计研究院有限公司 | Device and method for reducing pollution of plate-type ceramic membrane of anaerobic membrane bioreactor |
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Application publication date: 20130102 |