by nalundgaard

HNBQ effervescent surface front aeration device Device-HNBQ, disc-type effervescent membrane, aerator – H2O industries

Water Industry Network HC : Abstract By analyzing the existent aerator device, formed upon investigate as well as expansion HNBQ effervescent porous hoop Membrane Aerators with tall oxygen send efficiency, economy, energy, etc., as well as have extended prospects for expansion as well as unsentimental significance.

Key difference wastewater diagnosis equipment; hoop type; effervescent membrane; Aerator

CLC X703 Overview Aeration apparatus Urban sewage as well as industrial wastewater diagnosis plant the singular of the pass equipment, the energy-saving wastewater diagnosis plants fool around the wilful role. Therefore, the research, expansion as well as focus of latest high-performance low-power expenditure of aeration is important.

80 early, the initial time by German IFD microporous rubber diaphragm instead of firm porous aerator of success, as well as progressively practical to the series of sewage diagnosis plants, this stretchable surface diffusers tall function rate with oxygen, appetite efficiency, vigour loss, non-corrosive, non-blocking, the airflow can be practiced as well as so on.

This end, you carried out this latest appetite efficient, as well as affordable aeration device expansion work.

1HNBQ effervescent surface front aeration device handling element as well as characteristics

1.1 functions HNBQ effervescent surface front aeration device, the pass in to the air, the surface distended from the augmenting surface entrance open as well as to illustrate recover tiny bubbles, the enlargement of the grade of air pressure; When stopped ventilation, the entrance closed, the surface cover to the sure Personal Computer framework tighten to the turn arch, with the outcome which the aerator can sojourn hermetic for years.

1.2 facilities the work of

(1) will not be blocked. This aeration complement with the one-way hermetic make up of prolongation ” Valve Door “effect, stretchable microporous surface aeration usually when open, stop the aeration closed, ensuing in sewage sludge particles as well as will not come in the aeration device, as well as thus will not be since of microbial expansion as well as block aerator.

(2) corrosion-resistant as well as durable. Chassis as well as cover have been due to movie Plastic , Rubber as well as alternative tender materials, insurgency to air as well as H2O corrosion.

(3) Adjustable large-minded, any aerator aeration in 0 ~ 5m3 / h in between the changes.

(4) easy to install. This aerator can be but delay continuous by the threaded siren is continuous with the fine cloth trachea, deputy but collection in to uneven as well as bilateral, as well as all the bottom laid.

(5) use area, the vigour loss. Each aerator use area 05 ~ 10m2, H2O insurgency to 326 ~ 491mmH2O column.

(6) tall potency of oxygen function as well as power. When the 5 ~ 6m abyss function is 200% O2 259%, appetite potency is 39 ~ 45kgO2/kWh.

2HNBQ effervescent surface front aeration device structure

HNBQ effervescent surface front aeration device is arched by the cylindrical firm cosmetic framework as well as the set of their strike most tiny holes upon the effervescent rubber chimney. Hard cosmetic framework of the categorical components of polypropylene, as well as the tiny volume of fill additives. Plastic framework surrounded by the rubber surface covers the categorical part is healthy rubber, churned with the tiny volume of alternative ingredients.

3HNBQ hoop effervescent surface aerator experiment

3.1 Determination of oxygen send performance

3.1.1 measuring device Oxygenation totalled opening tests for the singular hoop purify water, tall in 0.8 7.5m PVC cylindrical aeration armoured column to exam upsurge shown in Figure 1.

3.1.2 Determination Theory 1. Eliminate oxygen It 2Na2SO3 + O2 = 2Na2SO4 principle, in H2O (tap water) in the smoothness of anhydrous sodium sulfite as well as cobalt chloride as the catalyst, H2O Pump Stir in the dissolved oxygen to purify H2O usually to zero.

2. Oxygenation Wait dissolved oxygen (DO) to zero, begin the aeration device, begin oxygenation, whilst dissolved oxygen was totalled by changes in the pool of DO as well as jot down immediate changes in dissolved oxygen, until the DO saturation, oxygen end. When totalled DO Probe Place the singular half of depth, as well as exam sampling points in the same section. Flow scale with regulator valve before, fast gas flow, H2O usually to repeat experiment, any interpretation underneath the same conditions were steady in exam 2 to 3 times, so which oxygen send fellow KLa values identical to, as well as take the normal calculated.

3. Formula (1) KLa20 method: According to the Whitman two-film speculation of gas-liquid interface area is formidable to cruise the integrity of the sum oxygen send fellow KLa instead of KL.

Oxygenation rate it The formula: KL for the movie mass send coefficient; Cs superfluity for the dissolved oxygen concentration; C is the thoroughness of dissolved oxygen.

The regulation (1) formation was The formula: C1, C2 respectively, t1, t2 time totalled dissolved oxygen values (mg / l).

KLa worth as well as heat as associated projects have been the heat during twenty for KLa20 worth standard, the exam heat KLaT worth correction, e.g. is shown below:

The formula: KLa20 customary condition (20 ), the sum aerator oxygen send fellow (min); T for contrast H2O temperature, ; 1024 for the heat improvement factor.

(2) oxygen function EA The formula: E for the exam conditions, oxygen aerator utilization; Q for the exam conditions, aeration as well as oxygenation genius (kgO / h); 0.28 for the customary state of oxygen in the air 1cm3 Weight (kg/m3); Q noted as customary conditions (01MPa, twenty ) aeration motion (m3 / h)

(3) Power potency Ep Ep = Qc / N (5) The formula: E for the exam conditions aerator appetite potency of oxygen; (k / kWh); Q for the exam conditions aerator oxygen send genius (kgO2 / h); N when oxygenation for the Aerator speculation of appetite expenditure (kW) by sort (8) basis.

N = Q genuine H/102 (6)

The formula: H as the gas Pressure Gauge Reading equates to (MPa).

3.1.3 Measurement Results This investigate were altered in the same H2O abyss of 4 aeration as well as gas underneath the same aeration as well as H2O abyss changes in 4 opposite conditions of oxygenation in sixteen tests.

(1) the sum oxygen send fellow (KLa20)

KLa20 worth is the analysis of aeration inclination is the singular critical opening index. KLa20 worth is confirmed during 0111 ~ 024min-1′s tall level; aeration same, the H2O abyss increases KLa20 worth increased; H2O abyss is constant, augmenting aeration, KLa20 worth additionally increased, shown in Figure 2.

(2) oxygen function EA Oxygen function analysis of aeration inclination is an additional critical indicator of performance. In the abyss of 5 ~ 6m, aeration volume from 2m3 / h to 5m3 / h time, EA worth is confirmed during 200% to 259% of the aloft level; oxygen function augmenting with the aeration rate decreased underneath the same aeration, oxygen function of the H2O abyss increases, see Figure 3.

(3) Power potency Ep

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