A kind of Novel bio-trickling filter device
Technical field
The utility model relates to a kind of filter tower device field, particularly relates to a kind of Novel bio-trickling filter device.
Background technology
Along with the pollutant entered in air that develops rapidly of the industries such as electronics, the energy, chemical industry, medicine gets more and more.The foul waste gas produced as municipal sewage plant and Sewage Treatment at Pharmaceutical Factory station comprises hydrogen sulfide (H
2s) and the poisonous and harmful element such as volatile organic matter (volatileorganic compounds, VOCs), can severe contamination surrounding environment.Hydrogen sulfide is colourless hypertoxic foul gas, and its olfact is about 0.00143mg/m
3, during low concentration, just have very large harm to human body; VOCs mostly is carcinogen, can cause photochemical fog under light illumination.
The Biochemical method of waste gas mainly contains biofiltration, bio-trickling and zinc cation three kinds of modes.Compared to Traditional materialized methods such as absorption process, absorption method, Production by Catalytic Combustion Process, neutralisation and oxidizing process, bioanalysis has the advantages such as effective, stable operation, operating cost are low, non-secondary pollution, is particularly suitable for processing large discharge, low concentration gas.Wherein bio-trickling filter is the most frequently used a kind of device, and it, mainly through being attached to the metabolic processes of the microorganism of dripping filling surface in filter tower, is CO contaminant degradation
2, the material such as water and minerals, and utilize waste gas to generate new microbial cell matter as nutrition or the energy, form the micro-ecological environment of stable equilibrium, the polluter in the metabolic conversion waste gas that can continue.
In bio-trickling tower apparatus, filler is the prop carrier of growth of microorganism, is again the mass transfer media of gas-liquid two-phase, and for gas-liquid-solid three-phase provides sufficient contact, its performance directly affects removal effect and the disposal cost of pollutant.Utilize potassium alginate, sodium alginate soluble in water, and its aqueous solution have certain viscosity; The water-fast feature of calcium alginate can by microorganism embedding wherein, if bio-trickling tower packing and microorganism are embedded in calcium alginate gel simultaneously, namely can be used as novel bio-trickling filter compounded mix, because carrier is inertia, and there is no chemical reagent participation process, so the microorganism be fixed is in the physiological condition identical with suspension microorganism, metabolism and the growth of microorganism would not be affected like this, also can not affect characteristic and the vigor of microorganism.
Utility model content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides a kind of Novel bio-trickling filter device.The utility model, by efficient immobilized microorganism conversion capability, reaches tens times of free cell, the contact between microorganism can be made more tight, and gas and nutrition supply form gradient, are conducive to the raising of transformation efficiency.By the circulation-supplied of circulated sprinkling liquid, ensure the nutritional need of microorganism on the one hand, the accumulation due to metabolite can be avoided on the other hand, feedback inhibition is caused to microbial metabolism, by the compact texture after calcium-alginate-immobilized, cell damage and pollution can be avoided.
The utility model is achieved through the following technical solutions:
The utility model provides a kind of Novel bio-trickling filter device, comprising: tower body, circulation, wind system and compounded mix layer; There are offgas outlet and the import of circulated sprinkling liquid in the top of described tower body, there are gases import and the outlet of circulated sprinkling liquid in below, the sidewall of described tower body is provided with observation window and sample tap, described circulation is connected with tower body by the import of circulated sprinkling liquid, the outlet of circulated sprinkling liquid, described wind system is connected with tower body by gases import, and described compounded mix layer is arranged on tower body inside.
Preferably, described compounded mix layer is arranged on the filler load-bearing screen of tower body inside.
Preferably, the height of described compounded mix layer is 1 ~ 1.5m.
Preferably, described compounded mix layer is made up of calcium alginate gel and filling carrier, and described calcium alginate gel is coated on filling carrier surface and forms compounded mix layer.
Preferably, compounded mix layer is loaded bio-trickling filter, and bed stuffing height is 1 ~ 1.5m; Pass into the gases such as hydrogen sulfide containing microorganism specific substrate or VOCs to bio-trickling filter, detect after 1 ~ 3 week and import and export gas concentration, the voc_s removal rates such as VOCs reach more than 90%, and the clearance of hydrogen sulfide reaches more than 99%.
Preferably, described gel layer thicknesses is 1 ~ 3mm.
Preferably, described circulation also comprises water inlet pipe and water outlet pipe, circulating water chennel, water pump, flowmeter, quantity of circulating water control valve and Pressure gauge, and described circulation is connected with the upper end of tower body through water inlet pipe and water outlet pipe, circulating water chennel, water pump, quantity of circulating water control valve, flowmeter, Pressure gauge successively.
Preferably, described wind system also comprises blower fan, pipeline, air inflow control valve and gas flowmeter, and the air inflow control valve of described wind system successively on blower fan, pipeline is connected with the lower end of tower body with gas flowmeter.
Preferably, described filling carrier is one or several the mixing in bamboo charcoal particle, haydite or polyurethane pellet.
Operation principle of the present utility model is: the utility model passes through blower fan 1 by certain density hydrogen sulfide gas or VOCs gas, entered the bottom of tower body 4 through air inflow control valve 2, gas flowmeter 3, gases import by connecting line, gas flow can by the air inflow control valve 2 on pipeline, to control suitable inlet gas concentration, charge flow rate regulates and observes by gas flowmeter 3, pass into the gas of tower body, be evenly diffused into bottom tower body, then via compounded mix layer 14, and discharge from top, hydrogen sulfide in gas, VOCs or other gases are through compounded mix, by antimicrobial absorbent fixing on compounded mix layer 14, metabolic conversion is the carbon dioxide not having to pollute, the materials such as water and minerals class, then tail gas is discharged by tower top, the nutrient solution that microorganism provides trace element is added in circulating water chennel 10, by water pump 9 through quantity of circulating water control valve 8, fluid flowmeter 7, Pressure gauge 6 arrives tower body top, circulated sprinkling liquid import 5 is sprayed onto filling surface, infiltrate compounded mix layer 14 surface from top to bottom, the trace element that inorganic salts wherein provide growth necessary for microorganism, the flow of recirculating nutrient solution can be regulated by quantity of circulating water control valve 8, observe by fluid flowmeter 7, loine pressure is observed by Pressure gauge 6, recirculated water sprays once for every 2 hours, each 3-5 minute, recirculating nutrient solution is via compounded mix layer 14, drip filter gradually to tower body 4, circulating water chennel 10 can be flowed back to by pipeline, discharge pipe line controls by recirculated water draining valve 11, recirculating nutrient solution in circulating water chennel 10 is changed weekly once.Tower body 4 is also provided with observation window 12, sample tap 13.
Compared with prior art, the beneficial effects of the utility model are:
1. the utility model eliminates the step that bio-trickling filter can must come into operation after microorganism colonization, and traditional bio-trickling filter microorganism colonization excessive cycle, reach several weeks to the several months long, have a strong impact on service efficiency and the operating cost of equipment, and by Novel bio-trickling filter that this method builds, be that microorganism is directly fixed on filling carrier, without the need to through microorganism colonization, directly can put into operation, therefore have and make simply, cost is low, and efficiency is high, the feature of Be very effective.
2. the utility model filling surface in tower body constructs stable ecological environment, reduce the obstruction of mass transfer, improve bio-trickling filter for exhaust treatment efficiency, more be conducive to the stable and high effective operation of bio-trickling filter, anti-poor environment interference performance is strong, microorganism can be avoided impaired and pollute, and simultaneously microbial biomass keeps stable; Traditional biological can be eliminated and drip filter tower, lose efficacy because biomembrane melts, the risk blocked due to microorganism excessive multiplication.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present utility model will become more obvious:
Fig. 1 is the utility model structural representation, and wherein, 1 is blower fan, 2 is air inflow control valve, and 3 is gas flowmeter, and 4 is tower body, 5 is the import of circulated sprinkling liquid, and 6 is Pressure gauge, and 7 is fluid flowmeter, 8 is quantity of circulating water control valve, and 9 is water pump, and 10 is circulating water chennel, 11 is recirculated water draining valve, 12 observation windows, 13 sample taps, 14 is compounded mix layer;
Fig. 2 is the structural representation of screen.
Detailed description of the invention
The utility model is described in further detail for following instance.The present embodiment carries out under premised on technical solutions of the utility model, gives detailed embodiment and process.Although be described in detail the utility model with reference to preferred embodiment; it will be understood by those skilled in the art that; still can modify to detailed description of the invention of the present utility model or equivalent replacement is carried out to portion of techniques feature; and not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the technical scheme scope of the utility model request protection.
embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail: as shown in Figure 1, 2,
A kind of Novel bio-trickling filter device that the utility model provides, comprising: tower body 4, circulation, wind system and compounded mix layer 14; There are offgas outlet and the import of circulated sprinkling liquid in the top of described tower body, there are gases import and the outlet of circulated sprinkling liquid in below, the sidewall of described tower body is provided with observation window 12 and sample tap 13, described circulation is connected with tower body 4 by the import of circulated sprinkling liquid, the outlet of circulated sprinkling liquid, described wind system is connected with tower body 4 by gases import, and it is inner that described compounded mix layer 14 is arranged on tower body 4.
Further, described compounded mix layer 14 is arranged on the filler load-bearing screen of tower body 4 inside.
Further, the height of described compounded mix layer 14 is 1 ~ 1.5m.
Further, described compounded mix layer 14 is made up of calcium alginate gel and filling carrier, and described calcium alginate gel is coated on filling carrier surface and forms compounded mix layer.
Further, described compounded mix layer can be prepared by following steps and obtain: step 1, by the suspension of microorganism and sodium alginate soln (volume ratio is 1:1 ~ 2) mixing and stirring, forms mixed solution A; Step 2, adds filling carrier (volume ratio is 1:0.5 ~ 0.8), stirs in mixed solution A, forms mixed solution B; Step 3, is transported to mixed solution B in calcium chloride solution (volume ratio is 1:2 ~ 3) by shaking screen dispersion, soaks.
The reaction mechanism related in the utility model is: by after the zymotic fluid of microorganism and the sodium alginate soln mixing and stirring being cooled to room temperature, the filling carrier of porosity about 50% is added in mixed solution, the volume of filling carrier is about 0.5 ~ 0.8 times of mixed solution, is then stirred together with mixed solution of sodium alginate with microorganism by filling carrier; The mixed liquor of above-mentioned interpolation filling carrier is transported in calcium chloride solution by shaking screen dispersion, the sodium alginate on filling carrier surface rapidly and calcium chloride react, form stable calcium alginate gel, firmly be attached to filling surface, and soak 30 minutes in calcium chloride solution, the thorough calcium of alginate is analysed, bio-trickling filter compounded mix; The bio-trickling filter compounded mix generated is loaded bio-trickling filter, and bed stuffing height is 1 ~ 1.5m; Pass into the gases such as hydrogen sulfide containing microorganism specific substrate or VOCs to bio-trickling filter, detect after 1 ~ 3 week and import and export gas concentration, the voc_s removal rates such as VOCs reach more than 90%, and the clearance of hydrogen sulfide reaches more than 99%.
Further, described gel layer thicknesses is 1 ~ 3mm.
Further, described circulation also comprises water inlet pipe and water outlet pipe, tank, water pump, flowmeter, valve and Pressure gauge.
Further, described wind system also comprises blower fan, pipeline, valve and flowmeter.
Further, described filling carrier is one or several the mixing in bamboo charcoal particle, haydite or polyurethane pellet.
The utility model passes through blower fan 1 by certain density hydrogen sulfide gas or VOCs gas, entered the bottom of tower body 4 through air inflow control valve 2, gas flowmeter 3, gases import by connecting line, gas flow can by the air inflow control valve 2 on pipeline, to control suitable inlet gas concentration, charge flow rate regulates and observes by gas flowmeter 3, pass into the gas of tower body, be evenly diffused into bottom tower body, then via compounded mix layer 14, and discharge from top, hydrogen sulfide in gas, VOCs or other gases are through compounded mix, be the material such as carbon dioxide, water and minerals class not have pollution by antimicrobial absorbent fixing on compounded mix layer 14, metabolic conversion, then tail gas is discharged by tower top, is added to nutrient solution (the recirculating nutrient solution formula: NH that microorganism provides trace element in circulating water chennel 10
4cl2.64g/L, KH
2pO
41.36g/L, MgSO
47H
2o0.2g/L, FeSO
47H
2o0.01g/L, NaCl5g/L), by water pump 9 through quantity of circulating water control valve 8, fluid flowmeter 7, Pressure gauge 6 arrives tower body top, circulated sprinkling liquid import 5 is sprayed onto filling surface, infiltrate compounded mix layer 14 surface from top to bottom, the trace element that inorganic salts wherein provide growth necessary for microorganism, the flow of recirculating nutrient solution can be regulated by quantity of circulating water control valve 8, observe by fluid flowmeter 7, loine pressure is observed by Pressure gauge 6, recirculated water sprays once for every 2 hours, each 3-5 minute, recirculating nutrient solution is via compounded mix layer 14, drip filter gradually to tower body 4, circulating water chennel 10 can be flowed back to by pipeline, discharge pipe line controls by recirculated water draining valve 11, recirculating nutrient solution in circulating water chennel 10 is changed weekly once.Tower body 4 is also provided with observation window 12, sample tap 13.
The present embodiment bio-trickling filter packing layer is loaded bio-trickling filter, and bed stuffing height 1 ~ 1.5m, passes into 180mg/m to bio-trickling filter
3h
2s gas, starts nutrient solution circulated sprinkling filling surface simultaneously, reaches even running state, now detect the H of gas port after ventilating one week
2s gas concentration, H after calculating
2the clearance of S gas reaches more than 99%.
Above specific embodiment of the utility model is described.It will be appreciated that, the utility model is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, this does not affect flesh and blood of the present utility model, and principle is understandable, structure is simple, and low cost of manufacture, has certain market prospects.