CN103449612A

CN103449612A - Reactor used for obtaining high-concentration yeast to quickly remove wastewater COD (chemical oxygen demand)

Info

Publication number: CN103449612A
Application number: CN2013103712130A
Authority: CN
Inventors: 吴巍; 宋晨; 戎非
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2013-07-26
Filing date: 2013-08-23
Publication date: 2013-12-18
Also published as: CN203845864U

Abstract

The invention discloses a reactor used for obtaining high-concentration yeast to quickly remove wastewater COD (chemical oxygen demand). The reactor is characterized by comprising a multifunctional pillar, a reactor, a filter membrane and a discharge tube, wherein the multifunctional pillar is directly inserted into the reactor and is communicated with the interior of the reactor; the filter membrane and the discharge tube are installed at the bottom of the reactor; the filter membrane wraps the first end of the discharge tube; the second end of the discharge tube penetrates out of an outlet at the lower end of the reactor. The reactor has the beneficial effects that the reactor can be directly used in any reaction vessel, is convenient in control and treats wastewater efficiently, the time for achieving the same wastewater COD removal rate can be shortened by 50% every time the inoculum size is increased by 10 times, the treatment time is shortened, the system operates stably, and the effluent quality is stable.

Description

A kind of reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium

Technical field

The present invention relates to the yeast field of waste water treatment, be specifically related to a kind of reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium.

Background technology

Current biological wastewater treatment, hydraulic detention time generally all needs 24-72 h even for more time, need during this period holding temperature, also need to carry out long-time aeration to maintain oxygen in water (DO) for aerobic type microorganism, need a large amount of energy consumptions, in addition, often need to carry out civil engineering during for large flow wastewater treatment and construct the macro-organism pond, make biological wastewater treatment cost and energy consumption high.Therefore, for how significantly shortening hydraulic detention time to improve speed of reaction, save energy consumption, reducing costs is the biological wastewater treatment problem demanding prompt solution all the time. summary of the invention

The technical problem that the present invention mainly solves is to provide a kind of reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium, all reaction process complete in a bio-reactor, waste water treatment efficiency is high, the time of processing waste water significantly shortens, system run all right, stable effluent quality.

For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:

A kind of reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium is provided, comprise: multiple function, reactor, filtering membrane, rising pipe, described multiple function assign in described reactor and with the internal communication of described reactor, described filtering membrane and described rising pipe are installed on described reactor bottom, described filtering membrane is wrapped in the first end of described rising pipe, and the second end of described rising pipe passes from the exit of reactor lower end.

In a preferred embodiment of the present invention, the described reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium, be equipped with liquid level control system, temperature control system, water inlet system, air-channel system and outlet system on described multiple function, collection water inlet, aeration, temperature control, liquid level are controlled in one, and described multiple function is directly assigned in described reactor and is fixed in described reactor surface with crosslinked.

In a preferred embodiment of the present invention, the reactor described in the described reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium is the bio-reactor that is applicable to microorganism culturing, food fermentation or microorganism water treatment.

In a preferred embodiment of the present invention, the aperture of the filtering membrane described in the described reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium is 1 μ m.

In a preferred embodiment of the present invention, rising pipe described in the described reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium is L-type, be positioned at the bottom of described reactor, the first end of described rising pipe is opening up, described first end is wrapped in described filtering membrane inside, and the second end of described rising pipe upwards passes from the described exit that is positioned at described reactor lower end in level.

In a preferred embodiment of the present invention, described in the described reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium, the material of filtering membrane and described rising pipe is all corrosion resistant material.

In a preferred embodiment of the present invention, described in the described reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium, the material of filtering membrane is PP, nylon or PE, and the material of described rising pipe is PP or acrylic.

The invention has the beneficial effects as follows:

The invention provides a kind of reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium.All reaction process complete in a bio-reactor, comprise multiple function, reactor, filtering membrane, rising pipe, be applicable to any bio-reactor, waste-water treatment efficient, 10 times of the every expansions of inoculum size, the time that reaches identical waste water COD clearance can shorten approximately 50%, treatment time significantly shortens, system run all right, stable effluent quality.

The accompanying drawing explanation

Fig. 1 is the structural representation of a preferred embodiment of the present invention;

Fig. 2 is the process flow sheet that the present invention uses;

In accompanying drawing, the mark of each parts is as follows: 1, multiple function, 2, reactor, 3, filtering membrane, 4, rising pipe.

Embodiment

Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.

Refer to Fig. 1 and Fig. 2, the embodiment of the present invention comprises:

A kind of reactor of removing fast chemical oxygen demand of waste water (COD) for obtaining the high yeast concentration bacterium, all reaction process complete in a bio-reactor, comprise multiple function 1, reactor 2, filtering membrane 3, rising pipe 4, be applicable to any bio-reactor.Multiple function 1 is directly assigned in reactor 2, and rising pipe 4 is L-type, and filtering membrane 3 is wrapped in the first end of rising pipe 4, and filtering membrane 3 is installed on reactor 2 bottoms with rising pipe 4, and the second end of rising pipe 4 passes from the exit of reactor 2 lower ends.

Reactor 2 can be any bio-reactor that is applicable to microorganism culturing or food fermentation or microorganism water treatment, can be arbitrary configuration, for yeast, cultivates and wastewater treatment.Multiple function 1 collection water inlet, aeration, temperature control, liquid level is controlled in one, the unloading phase, suction culvert by multiple function 1 adds nutrient solution, at 20-30 ℃, maintain dissolved oxygen (DO) under 2-4 mgL-1 condition, culturing yeast bacterium 48-72 h in reactor 2, then discharge nutrient solution, filtering membrane 3 is trapped in the yeast thalline in reactor 2 by the gravity filtration effect, isolated water is discharged from rising pipe 4, enter new nutrient solution simultaneously, repetitive operation repeatedly, make yeast concentration in reactor 2 progressively be increased to 10 times of original concentration, 100 times or more than, repeatedly after the operation, obtain required bacteria concentration, as bacteria concentration reaches 20 gL-1, being equivalent to bacterium liquid inoculum size is 10000%, now enter the system operation phase, now in reactor, bacteria concentration is 20 gL-1, last nutrient solution is discharged, same, filtering membrane 3 is trapped in yeast in reactor 2, the water separated is discharged from rising pipe 4, arrange the waste water of processing into wish from multiple function 1, as waste water COD is 3000 mgL-1, at 20-30 ℃, after maintaining DO react 8 h under 2-4 mgL-1 condition, waste water COD is down to below 500 mgL-1, reach CJ343-2010 " People's Republic of China's city-building industry standard " B grade water emission standard, treated water is trapped in yeast in reactor 2 by filtering membrane 3, the water separated is discharged from rising pipe 4, arrange into the next batch wish and process waste water from multiple function 1 simultaneously, repetitive operation.

The present invention has following advantage:

(1) strong adaptability: any bio-reactor is carried out to simple transformation and get final product.

(2) simple in structure: as only need can to realize at original bio-reactor water outlet assembling filtering membrane and rising pipe.

(3) rapidly and efficiently: with general reactor, compare, only need the unloading phase cultivate bacterial classification, after reaching required bacteria concentration without again cultivating bacterial classification, 10 times of the every expansions of inoculum size, the time that reaches identical waste water COD clearance can shorten 50%, when bacteria concentration reaches 20 gL-1(to be equivalent to inoculum size be 10000%) during high density, the exquisite part waste water COD of coolant agent WS-23 the most only needs 8 h from 3000 mgL-1 processing to 500 mgL-1, compared to bacteria concentration, be that to be equivalent to inoculum size be 10% to 0.02 gL-1() needs 48 h, treatment time shortens, system run all right, stable effluent quality.

(4) low cost: the operation phase has been saved the spawn culture link, has reduced the spawn culture cost, and compares with general water treatment hydraulic detention time 24-72 h, shortens hydraulic detention time, reduces aeration energy consumption, temperature control energy consumption during this.

The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification sheets of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.

Claims

1. a reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium, comprise: multiple function (1), reactor (2), filtering membrane (3), rising pipe (4), it is characterized in that, described multiple function (1) assign in described reactor (2) and with the internal communication of described reactor (2), described filtering membrane (3) is installed on described reactor (2) bottom with described rising pipe (4), described filtering membrane (3) is wrapped in the first end of described rising pipe (4), the second end of described rising pipe (4) passes from the exit of reactor (2) lower end.

2. the reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium according to claim 1, it is characterized in that, described multiple function is equipped with liquid level control system, temperature control system, water inlet system, air-channel system and outlet system on (1), collection water inlet, aeration, temperature control, liquid level are controlled in one, and described multiple function (1) is directly assigned in described reactor (2) and crosslinked described reactor (2) surface of being fixed in.

3. the reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium according to claim 1, is characterized in that, described reactor (2) is the bio-reactor that is applicable to microorganism culturing, food fermentation or microorganism water treatment.

4. the reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium according to claim 1, is characterized in that, the aperture of described filtering membrane (3) is 1 μ m.

5. the reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium according to claim 1, it is characterized in that, described rising pipe (4) is L-type, be positioned at the bottom of described reactor (2), the first end of described rising pipe (4) is opening up, described first end is wrapped in described filtering membrane (3) inside, and the second end of described rising pipe (4) passes from the described exit that is positioned at described reactor (2) lower end in the horizontal direction.

6. the reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium according to claim 1, is characterized in that, described filtering membrane (3) is all corrosion resistant material with the material of described rising pipe (4).

7. the reactor of removing fast waste water COD for obtaining the high yeast concentration bacterium according to claim 6, is characterized in that, the material of described filtering membrane (3) is PP, nylon or PE, and the material of described rising pipe (4) is PP or acrylic.