CN105668935A

CN105668935A - Novel alga-active sludge coupling reactor and antibiotic removing method

Info

Publication number: CN105668935A
Application number: CN201610162438.9A
Authority: CN
Inventors: 陈建秋; 郭瑞昕
Original assignee: China Pharmaceutical University
Current assignee: China Pharmaceutical University
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2016-06-15

Abstract

A novel alga-active sludge coupling reactor is mainly composed of an air pump, constant-temperature water bath, an alga reactor, a filter and an active sludge reactor. Supplementing of CO2 and light supplementing through a plant growing lamp are adopted for the alga reactor, the air pump provides air with positive pressure, and the air is heated to proper temperature through the constant-temperature water bath and then delivered to an aeration ring and an aeration head which bubbles and floats up to drive drive antibiotic wastewater to be in flexible power directional circulation. The antibiotic removing method includes: feeding antibiotic wastewater to be treated into the alga reactor for initial treatment through which part of antibiotic can be removed and activity of antibiotic capable of inhibiting certain microorganisms in sludge can be lowered effectively; filtering the antibiotic wastewater, and feeding the same into the active sludge reactor for further thorough treatment. When the novel alga-active sludge coupling reactor is adopted to remove the antibiotic, efficiency is high, cost is low, operation is convenient, and environment friendliness is realized. The novel alga-active sludge coupling reactor can be applied in treatment of other organic matters and heavy metal wastewater and has extremely wide application prospect.

Description

Novel algae activated sludge coupled reactor and remove antibiotic method

Technical field

The present invention relates to the Waste Water Treatment in the fields such as medical treatment, pharmacy, domestic animal cultivation, agricultural, aquaculture, particularly relate to a kind of novel algae activated sludge coupled reactor and the method removing antibiosis rope.

Background technology

The field such as medical treatment, pharmacy, domestic animal cultivation, agricultural, aquaculture, will produce a large amount of rich in antibiotic waste water. Newspaper is had openly to report recently, the antibiotic usage amount of China in 2013 reaches 16.2 ten thousand tons, account for the half of world's consumption, wherein 52% is for animals, 48% uses for people, be discharged in the soil and water resources of nature more than 50,000 tons of antibiotic, give surface water as drinking water source area water quality safety bring huge threat. The harm major embodiment of antibiotic remains is both ways: one is that microbiologic population in environment and aquatile, plant, the population structure of animal and trophic transfer mode are produced certain impact, and then the balance of destruction ecosystem, and the antibiotic in environment can be accumulated in food chain biology and transmits along food chain; Two is the generation being chronically at and bringing out fastbacteria in low dosage antibiotic environment, finally human health is constituted and threatens greatly.

So, containing antibiotic waste water before entering the water body of nature, it is necessary to carry out the process of necessity, can discharge after reaching safe and harmless requirement. Wherein bioremediation is exactly one of common technology processing organic pollutant wastewater. Biochemical method process is actually the organic decomposition process undertaken by microorganism participation, if microbial host algae, antibacterial and protozoacide etc. This technology can significantly reduce the operating cost of sewage disposal, is usually used in the process of pharmacy waste water.

The most popular method adopting Biochemical method organic pollutant wastewater at present both at home and abroad is activated sludge process, and its cutting mechanisms is biological oxidation and biological adsorption. Activated sludge contains abundant microbiologic population's (referring mainly to antibacterial), biological metabolism can be passed through by organic pollutant degradation, simultaneously when organic pollution partition coefficient in solid phase is higher, the physical and chemical adsorption effect of activated sludge is also critically important, and the target compound that part is not biodegradable can be transferred to mud solid phase from aqueous phase by the adsorption of activated sludge. But the most important thing is, owing to antibiotic mostly is antimicrobial agents, can directly kill in mud some antibacterial or suppress it to grow, affecting kind and group's composition of microorganism in mud, reduce the removal ability of microbe, cause that antibiotic removal efficiency is low. So, the effect that single activated sludge process removes antibiosis rope is not very good.

Microalgae, as important biomaterial, is increasingly used in control atmosphere pollution and water pollution, as absorbed fixing CO₂, remove in heavy metal and organic pollution, sewage nitrogen phosphorus deep purifying etc.Microalgae application in antibiotic removal also has been reported that, as removed tetracycline, norfloxacin and amoxicillin. The just essential condition of micro algae growth, microalgae utilizes luminous energy to carry out photosynthesis, and the light wave of different-waveband is different to the effect of microalgae, and HONGGUANG therein and blue light are maximum to the effect of microalgae. And the supplementary light source adopted in the algae technique of existing routine mostly is electric filament lamp, fluorescent lamp and high-pressure mercury lamp etc., the common drawback of these light sources is that wavelength can not effectively control, luminous efficiency is low, and most electric energy is converted to heat, and the photosynthetic radiation efficiency of microalgae is low. So, single its treatment effect of algae technique is also undesirable. Especially antibiotic waste water, has complicated component, organic pollutant category is many, biodegradability is low and has the features such as bio-toxicity, and single algae processes technique and also is difficult to reach desirable effect.

For solving above technical barrier, the present invention provides a kind of novel algae one activated sludge coupled reactor and the method removing antibiosis rope.

Summary of the invention

Novel algae activated sludge coupled reactor provided by the present invention and the method removing antibiosis rope, its main thought is: antibiotic waste water is firstly introduced into algae reactor and carries out preliminary treatment by the first step, part antibiotic can not only be removed, also can effectively reduce and can suppress the antibiotic activity of certain micro-organisms in mud; Second step enters activated sludge reactor after being filtered by the antibiotic waste water of preliminary treatment again and makees further comparatively to process thoroughly. Obtain the treatment effeciency of antibiotic waste water is substantially better than the result of single process technique, and processing cost is cheap.

Novel algae activated sludge coupled reactor provided by the present invention, is mainly made up of air pump 1, water bath with thermostatic control 2, algae reactor 8, filter 11, activated sludge reactor 12 etc. It is characterized in that algae reactor couples with activated sludge reactor, worked in coordination with the process of antibiotic waste water. Algae reactor 8 therein is mainly made up of plant growth lamp 8-1, interior pipe 8-2, isolated tube 8-3, outer tube 8-4, aeration ring 8-5 etc.; Activated sludge reactor 12 is mainly made up of outer tube 12-1, interior pipe 12-2, aeration head 12-3, valve V12-4, storage tank 12-5 etc., and the bottom of outer tube 12-1 is tapered, reduces mud and deposits at dead angle place. For guaranteeing that antibiotic waste water relies on self gravitation to realize the smooth outflow between neighbouring device when not adopting pumping, the bottom of algae reactor 8 necessarily be greater than the top of filter 11, and the bottom of filter 11 necessarily be greater than the top of activated sludge reactor 12. Algae is a kind of containing chlorophyllous plant, adopts CO₂Steel cylinder 4 provides CO in algae reactor 8₂, then carry out light filling with plant growth lamp 8-1, can promote that algae carries out photosynthesis. Plant growth lamp preferentially adopts red globe lamp and blue-ray light collocation to use.

Present invention process is succinct, antibiotic clearance is high, save energy consumption, equipment is few, volume is little, compared with prior art, hence it is evident that have the advantage that

(1) novel algae activated sludge coupled reactor provided by the present invention, pending antibiotic waste water is first fed into algae reactor and carries out preliminary treatment, not only remove part antibiotic, also can effectively reduce and can suppress the antibiotic activity of certain micro-organisms in mud; Send into activated sludge reactor after being filtered by antibiotic waste water again to make further comparatively to process thoroughly, reach efficiently to remove the purpose of antibiosis rope.

(2) algae reactor adopts and supplements CO₂With plant growth lamp light filling, be conducive to algae to carry out photosynthesis, promote algae to mushroom out and breed.

(3) algae reactor and activated sludge reactor all adopt air pump to provide the air with malleation; it is heated to after suitable temperature through water bath with thermostatic control; it is respectively delivered to the aeration head bottom the aeration ring of algae reactor bottom and activated sludge reactor again and carries out bubbling; because in bubble, the density of air is little and float; driving the antibiotic waste water in algae reactor and activated sludge reactor to carry out flexible dynamic directed circulation flowing, protection microbial cell preserves from. Suitable aeration temperature is conducive to microbial growth and breeding.

(4) adopting novel algae activated sludge coupled reactor provided by the present invention, process the antibiotic waste water containing complicated component, efficiency is high, cost is low, easy to operate, environmental friendliness. Can be applicable to the process of other organic wastewater such as pesticide and heavy metal wastewater thereby etc., there is extremely wide application prospect.

Accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram of the present invention;

In Fig. 1: 1. air pump, 2. water bath with thermostatic control, 3. valve I, 4.CO₂Steel cylinder, 5. valve II, 6. effusion meter I, 7. effusion meter II, 8. algae reactor, 8-1. plant growth lamp, pipe, 8-3. isolated tube in 8-2., 8-4. outer tube, 8-5. aeration ring, 9. valve III, 10. valve IV, 11. filter, 12. activated sludge reactors, 12-1. outer tube, 12-2. interior pipe, 12-3. aeration head, 12-4. valve V, 12-5. storage tank, 13. effusion meter III, 14. valve VI.

Detailed description of the invention

Below in conjunction with accompanying drawing 1, the invention will be further described:

Gas outlet's pipeline of air pump 1 is connected with the entrance of coil pipe in water bath with thermostatic control 2, and the outlet of this coil pipe is connected with valve I3, effusion meter II7 successively through threeway, CO₂The outlet of steel cylinder 4 is connected with valve II5, effusion meter I6 successively, the outlet of effusion meter I6 is connected with the aeration ring 8-5 being arranged on bottom algae reactor 8 through pipeline after collecting with the outlet of effusion meter II7, aeration ring 8-5 is arranged on the bottom of the formed slit of isolated tube 8-3 and outer tube 8-4, the thin bar that uniform several length are suitable in the lower end of isolated tube 8-3 supports, and plant growth lamp 8-1 (red globe lamp and each one of blue-ray light) is separately mounted to bottom and the top of interior pipe 8-2. Isolated tube 8-3, outer tube 8-4, interior pipe 8-2 all adopt transparent material, preferentially adopt unorganic glass. The bottom of algae reactor 8 respectively with valve III9 and valve IV10 UNICOM, valve IV10 is blowoff valve, it is possible to as the entrance of pending waste water. Filter 11 is installed in the underface of valve III9 outlet, installs activated sludge reactor 12 in the underface of filter 11. It is connected with valve VI14, effusion meter III13, aeration head 12-3 successively with pipeline again through another outlet of threeway by the coil outlets in water bath with thermostatic control 2, aeration head 12-3 is arranged on the bottom of interior pipe 12-2, the thin bar suitable in the uniform several length in the lower end of interior pipe 12-2 supports, the conical lower portion of outer tube 12-1 is connected with valve V12-4, installs storage tank 12-5 in the underface of valve V12-4.

The specific works mode of the present invention is as follows:

First pending appropriate antibiotic waste water is inputted algae reactor 8 through valve IV10, it is possible to directly pouring into from the top of algae reactor 8, its liquid level is slightly above the upper orifice of isolated tube. Adding the algae preferably gone out, can preferentially adopt Chlorella pyrenoidesa, this algal structure is simple, it is possible to utilize supplementary light source and the CO of plant growth lamp₂Carrying out photosynthesis, synthesis of organic substance matter also discharges O₂, it is that in nature, photosynthetic efficiency is the highest, grow one of primitive organism kind the most rapidly.It is then turned on water bath with thermostatic control 2 and plant growth lamp 8-1, water bath with thermostatic control 2 is used to the aeration air that heating is provided by air pump, water temperature in water bath with thermostatic control 2 is constant in design temperature (preferential set water temperature is 30 DEG C), it is then turned on air pump 1, and the show value according to the quantity of algae in algae reactor 8 and effusion meter I6, regulate the open degree of valve II5. Bubbling situation according to aeration ring 8-5 and the show value of effusion meter effusion meter II7, regulate the open degree of valve I3. Generally, antibiotic waste water, after algae reactor 8 processes 12h, can reach the requirement of pretreatment.

Then opening valve III9, the liquid inflow filter 11 in algae reactor 8, algae is trapped on filter screen, treats that the antibiotic waste water of process further then flows through filter screen and falls into activated sludge reactor 12, its liquid level upper orifice slightly above interior pipe 12-2. Bubbling situation according to aeration head 12-3 and the show value of effusion meter III13, regulate the open degree of valve VI14. Generally, antibiotic waste water is after activated sludge reactor processes 12h further, and total treatment effeciency, up to 96%, is namely thought that antibiotic waste water is treated and reached harmless requirement, just can carry out safety dumping.

Claims

1. a novel algae activated sludge coupled reactor, is mainly made up of air pump, water bath with thermostatic control, algae reactor, filter, activated sludge reactor etc. It is characterized in that: adopt algae reactor to couple with activated sludge reactor, worked in coordination with the process of antibiotic waste water.

2. novel algae activated sludge coupled reactor as claimed in claim 1, it is characterized in that: described algae reactor is mainly made up of plant growth lamp, interior pipe, isolated tube, outer tube, aeration ring etc., plant growth lamp therein preferentially adopts red globe lamp and blue-ray light collocation to use, and the thin bar that uniform several length are suitable in the lower end of isolated tube supports.

3. novel algae activated sludge coupled reactor as claimed in claim 1, it is characterized in that: described activated sludge reactor is mainly made up of outer tube, interior pipe, aeration head, valve V, storage tank etc., the bottom of its middle external tube is tapered, reducing mud to deposit at dead angle place, the thin bar that uniform several length are suitable in the lower end of interior pipe supports.

4. novel algae activated sludge coupled reactor as claimed in claim 1; it is characterized in that: described algae reactor and activated sludge reactor; air pump is all adopted to provide the air generation bubbling with malleation to float to aeration ring and aeration head; driving antibiotic waste water to carry out flexible dynamic directed circulation flowing, protection microbial cell preserves from.

5. novel algae activated sludge coupled reactor as claimed in claim 1, it is characterized in that: described water bath with thermostatic control need to set suitable temperature, it is used for heating the aeration air provided by air pump, preferentially setting the temperature of water bath with thermostatic control as 30 DEG C, suitable aeration temperature is conducive to microbial growth and breeding.

6. one kind adopts novel algae activated sludge coupled reactor to remove antibiotic method, it is characterized in that: antibiotic waste water is firstly introduced into algae reactor and carries out preliminary treatment by the first step, part antibiotic can not only be removed, also can effectively reduce and can suppress the antibiotic activity of certain micro-organisms in mud; Second step enters activated sludge reactor after being filtered by the antibiotic waste water of preliminary treatment again and makees further comparatively to process thoroughly. Obtain the treatment effeciency of antibiotic waste water is substantially better than the result of single process technique, and processing cost is cheap.