Hemeng Hemeng

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Advatic air floatation

Classification:

Other non-standard equipment

Keywords: stacking screw dewatering machine, pre-concentration stacking screw dewatering machine, integrated stacking screw dewatering system

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Detailed introduction

Application occasions

In the water supply and drainage treatment process, solid and liquid separation technology and equipment is one of the key projects. Air flotation is an effective method for the removal of fine suspended particles with a specific gravity close to that of water.

Model representation

Features

Occupying a small area, power consumption, convenient operation, simple management.

High dissolved gas efficiency, stable treatment effect, machine, electricity, instrument to achieve an integrated control.

The device adopts TR-type dissolved air system, which has a clever structure, a dissolved air efficiency of up to 90%, a volume of only 1/5 of that of a general dissolved air system, and has super anti-clogging ability that other dissolved air devices do not have.

The device uses a new type of dissolved gas release device, the release of high perfection, the average particle size of micro-bubbles is only 15-30μm, with self-cleaning function.

The device adopts chain plate type slag scraper, which runs smoothly and reliably and has high slag scraping efficiency.

Structure and working process

PQF type advect air flotation equipment consists of air flotation tank body, dissolved air system, dissolved air return pipeline, dissolved air water releaser, slag scraping device (combined type, traveling type and chain plate type can be used respectively according to user's needs) and electric control cabinet and other components.

Air flotation separation technology refers to the air and water under a certain working pressure, so that the gas is dissolved into the water to a large extent, and strive to be in a saturated state, and then the formed pressure dissolved gas and water is released through decompression to produce a large number of fine bubbles, which are fully contacted with the suspended flocs in the water, so that the suspended flocs in the water adhere to the micro bubbles and float to the water surface with the bubbles, the scum is formed and scraped off, thereby purifying the water quality.

Air flotation mainly plays a role in solid-liquid separation (at the same time can reduce COD, BOD, pigment, etc.). Flocculant PAC or PAM is added to the raw water. After effective flocculation reaction (time, dosage and flocculation effect must be determined by experiments), the raw water enters a group of air flotation contact zones. In the contact zone, the micro bubbles in the dissolved air water and the flocs in the raw water are bonded to each other and enter the separation zone together. Under the action of bubble buoyancy, the flocs and bubbles rise to the liquid surface together to form scum. The scum is scraped to the sludge area by the scraping device. The clean water in the lower layer flows to the clean water tank through the water collecting pipe. Part of the clean water is returned for use by the dissolved air system, and the other part is discharged.

Scope of application

As a process of water treatment, air flotation is widely used in sewage treatment and water supply purification engineering. This equipment is suitable:

Paper white water pulp recovery and water recovery;

Removal of various heavy metal ions;

Oil refining wastewater and oil pollution separation;

Removal of impurities from tannery wastewater;

the removal of chromaticity and impurities in printing and dyeing wastewater;

All kinds of biological treatment, biological mud membrane solid-liquid separation.

Technical parameters

Model/Parameter Processing capacity
(m³/h)
 Dissolved air quantity
(m³/h)
 Main motor
(kw)
 aerating motor
(kw)
 Slag scraping machine
(kw)
 Mixer
(KW) × 2
 Total power
(kw)
PQF3 2-3 1-1.5 1.1 0.55 0.2 0.4 × 2 2.65
PQF5 3-5 1.5-2 1.1 0.55 0.2 0.4 × 2 2.65
PQF10 5-10 3-4 1.5 0.75 0.2 0.4 × 2 3.25
PQF15 10-15 4-5 2.2 0.75 0.4 0.75 × 2 4.85
PQF20 15-20 5-7 2.2 0.75 0.4 0.75 × 2 4.85
PQF30 20-30 8-12 5.5 0.75 0.4 0.75 × 2 8.15
PQF40 30-40 10-15 5.5 0.75 0.4 0.75 × 2 8.15
PQF50 40-50 15-18 7.5 1.5 0.4 0.75 × 2 10.9
PQF60 50-60 18-20 7.5 1.5 0.4 0.75 × 2 10.9
PQF70 60-70 20-25 11 2.2 0.4 0.75 × 2 15.1
PQF80 70-80 25-30 11 2.2 0.4 0.75 × 2 15.1
PQF100 80-100 35-40 15 2.2 0.4 0.75 × 2 19.1

PQF3T-PQF100T advection air floatation installation dimension (mm)

Model/Parameter L B H I b
PQF3 3460 2100 2300 3300 800
PQF5 3660 2300 3500 1000
PQF10 4700 2500 2500 4500 1200
PQF15 5200 2800 5000 1500
PQF20 5200 3100 5000 1800
PQF30 7200 3100 6000 2000
PQF40 8200 3300 7000 2200
PQF50 8200 3800 7000 2700
PQF60 9200 3900 8000 2800
PQF70 10200 4100 9000 3000
PQF80 11200 4400 10000 3200
PQF100 11700 4800 10500 3600

PQF3T-PQF100T advection air floatation installation dimension (mm)

Model parameters h h1 h2 h3 DN1 DN2 DN3 DN4
PQF3 1900 200 1400 900 50 50 80 50
PQF5 2500 80 80 80 50
PQF10 2100 1900 1500 1100 100 100 80 80
PQF15 100 100
PQF20 1850 125 125
PQF30 125 150
PQF40 1000 150 150 150
PQF50 150 200
PQF60 200 200
PQF70 200 200
PQF80 200 250
PQF100 1550 200 250

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