CN102276101A

CN102276101A - Biochemical treatment reactor for carbostyril-containing antibiotic waste water

Info

Publication number: CN102276101A
Application number: CN2010102027848A
Authority: CN
Inventors: 魏东斌; 阴俊霞; 杜宇国
Original assignee: Research Center for Eco Environmental Sciences of CAS
Current assignee: Research Center for Eco Environmental Sciences of CAS
Priority date: 2010-06-10
Filing date: 2010-06-10
Publication date: 2011-12-14

Abstract

The invention relates to a biochemical treatment reactor for carbostyril-containing antibiotic waste water. The reactor consists of a CAF (Compound Anaerobic Filter) and an FBBR (Fixed-Bed Biofilm Reactor). Pollutants of the type are decomposed into small molecular compounds by hydrolysis acidate bacteria of an anaerobic reactor, and are degraded by microorganisms in an aerobic reactor, so that the aim of removing the pollutants of the type is fulfilled. By improving the conventional reactor, the problem of difficulty in biodegrading antibiotic waste water containing carbostyril compounds is solved, the problems of stemming and difficulty in acclimatizing existing in the conventional reactor are solved simultaneously, and a novel way for treating the antibiotic waste water is provided.

Description

A kind of biochemical treatment reactor of quinolone containing class antibiotic waste water

Technical field

What the present invention relates to is a kind of reactor of biochemical degradation quinolone containing class antibiotic waste water.

Background technology

Quinolones is the antibacterials that contain 4-quinolone parent nucleus of synthetic, and its DNA helicase (DNA-gyrase) to bacterium has selective inhibitory, synthesizes by obstruction DNA and causes bacterium death.

Domestic widely used quinolones medicine has norfloxicin, Ofloxacine USP 23, Ciprofloxacin, levofloxacin, lomefloxacin, fleroxacin, Tosulfloxacin, Sparfloxacin, cinoxacin, grepafloxacin, Moxifloxacin, gemifloxacin, trovafloxacin, Clinafloxacin, pipemidic acid, Nalidixic Acid, minaline etc. at present.Wherein, former three reaches more than 85% in the rate of utilization of hospital.Such microbiotic medicine all produces high concentrated organic wastewater in links such as the fermentation of production process, separation, extraction, purifying.

At present, both at home and abroad to the traditional activated sludge process of the most employings of the processing of such antibiotic waste water, these biological treatments are very little to the removal efficient of this pollutant, the apparent reduction of the Pollutant levels adsorption of active sludge often in the water body, and more these pollutants that are not adsorbed enter natural water with the draining of Sewage Plant more, and the pollutent that is adsorbed then is deposited in the bed mud also may enter environment with mud landfill or regeneration.In a word, no matter enter environment in which way, all can become the potential source of pollution and threaten ecotope and human health.

Summary of the invention

The objective of the invention is in order to overcome can not effectively the degrade shortcoming of quinolone antibiotic of traditional treatment method, the treatment process that provides a kind of CAF of employing to combine with FBBR is for a new way is opened up in effective removal of quinolones pollutent.Purpose of the present invention realizes in the following manner: the method that adopts the inoculation sanitary sewage, the filling Ball-type packing is as bio-carrier in the reactor, after the vexed three days successful biofilms of exposing to the sun, feed waste water continuously by the target contaminant preparation, progressively improve load, the microorganism and the zoogloea that rest in the active sludge of filler inside are selected through the survival of the fittest, and the superior microorganism of survival and flora can utilize the conversion target contaminant, reach the purpose that degraded is removed.

The device that the inventive method is used as shown in Figure 1, mainly comprises: CAF composite anaerobic filter tank, FBBR fixed bed membrane bioreactor.

Advantage of the present invention is mainly reflected in the following aspects: (1) partly adopts the method for implantable bioartificial filler in anaerobism, can hold back a large amount of mud, has overcome traditional anaerobic reactor and has run the serious problem of mud; (2) filler can reach good separating effect to the gas, liquid, solid three-phase, has saved triphase separator; (3) anaerobic reactor adopts aerobic startup, transfers the anaerobism operation after the biofilm to, and start time is fast; (3) in the aerobic reactor, adopt the current form of rectification, when waste water was flowed through filler, mud passed through in the filler inside in slug flow district water flowing district's process soon, has formed to wander about as a refugee, and HRT and SRT is divided open, and SRT can reach

By several days even tens days; (4) existence of filler produces cutting action to bubble, thereby has improved coefficient of oxygen utilization; (5) adopt perforated pipe aerating regulation, abandoned the trouble that traditional aeration head need be changed; (6) special biologic packing material provides good habitat for microorganism, thereby has improved the capacity of resisting impact load of whole reactor; (7) compare with traditional reactor, anti-blockage capability is strong.

In sum, the present invention is by implanting the mode of special biologic packing material in reactor, for dominant microflora and microorganism provide the good living environment of perching, the dominant bacteria that guarantees the efficient degradation target contaminant can be retained in this reactor, be bred, and realizes efficient degradation, removal to target contaminant.

Description of drawings

Fig. 1. the reaction unit of removal quinolone antibiotic of the present invention

Fig. 2. the COD degradation curve of the embodiment of the invention

Fig. 3. the experimental result table of the embodiment of the invention

Embodiment:

At first in reactor, insert sanitary sewage, two reactors are after vexed a couple of days of exposing to the sun simultaneously, stop the aerating system of CAF reactor, transfer some days of anaerobism operation to, the biofilm situation of observing biologic packing material, after treating successfully biofilm, the certain density waste water (progressively improving load) of laboratory preparation is pumped in the reactor, pass through CAF earlier then by FBBR, the COD value of continuous detecting Inlet and outlet water, in experimentation, constantly adjust the parameter of reactor, to reach best removal effect.

Embodiment:

Present embodiment adopts the waste water at the high density quinolone containing compounds of laboratory preparation to experimentize.Raw water quality is: carbostyril compound is 300-400mg/L, and being equivalent to CODcr is 600-800mg/l.By water pump water sample is pumped in the CAF reactor, after waste water stopped 24h, gravity flow entered the FBBR aerobic reactor, discharged behind the stop 24h, detected the CODcr of Inlet and outlet water, and after reactor was stable, clearance can be stabilized in about 70-75%.Biofilm development is good, to the microbial film microscopy, finds that microbe species is more, and active good.

The english abbreviation explanation:

CODcr: chemical oxygen demand (COD)

CAF: hybrid anaerobic reactor

FBBR: fixed membrane bioreactor

HRT: hydraulic detention time

SRT: solid retention time

Claims

1. one kind specially at the biochemical treatment reactor of quinolone antibiotic waste water.

By being implanted into special biologic packing material at reactor to hold back microorganism, filter out the special bacterial classification that adapts to such waste water, reach the target of removing quinolones pollutent in the waste water.

2. the wastewater biochemical treatment reactor of the described a kind of quinolone containing pollutant of claim 1, mainly comprise: CAF composite anaerobic filter tank and FBBR aerobic reactor, its feature also is: by water pump the mode that goes out on advancing below the waste water is pumped into the CAF reactor, waste water passes through filler from bottom to top in this reactor, active sludge is trapped within the packing layer, and waste water enters the FBBR reactor from the collection mouth gravity flow on top.In the FBBR reactor, water passes through between filler and filler, and active sludge then accumulates in filler inside, by very long stop progressively adsorb and degradation water in pollutent.

3. the described a kind of treatment process targetedly of claim 1, its feature also is: the special bacterial classification of quinolones pollutent of degrading can be held back and then tame out to biologic packing material in the reactor.

4. the method for wastewater treatment of the described a kind of quinolone containing pollutant of claim 1, its feature also is: treatment process can be applicable to the quinolones pollutent of handling high, medium and low concentration, and treatment process is high and stable to the clearance of quinolones pollutent, clearance is basicly stable at 70-75%, has very strong capacity of resisting impact load.

5. the method for wastewater treatment of the described a kind of quinolone containing pollutant of claim 1, its feature also is: treatment process can both effectively be removed multiple quinolones pollutent, and removable types of drugs comprises norfloxicin, Ofloxacine USP 23, Ciprofloxacin, levofloxacin, lomefloxacin, fleroxacin, Tosulfloxacin, Sparfloxacin, cinoxacin, grepafloxacin, Moxifloxacin, gemifloxacin, trovafloxacin, Clinafloxacin, pipemidic acid, Nalidixic Acid, minaline etc.