Dissolved gas floating machine

I. Equipment overview

Because of the water quality and quantity, objective factors, water treatment program have trival, could combine to use a function, optimization water treatment program is particularly important, we design and manufacture of the floating filter, the organic integration equipment will be dissolved gas floating machine and sand filter organic unifies in together, equipment will flocculation, floating, and filter, such as performance together, suspended in the water, colloid and COD removal, realize effectively remove water treatment and high integration of the operating system. In the process of higher efficiency, cost less maintenance operation, more simple.

I company reference foreign advanced technology, developed the CAF series flotation dissolved vapor technology and complete sets of equipment, more efficient, cheaper, maintenance operation more easy. The treatment efficiency and effect is far far higher than present tradition, it is all sorts of conventional floating floating latest old products.

II.Working principle and characteristics

1, structure composition:

(1) the tub (2) the tiny bubbles generator (3) dispensing device. (4) the container device

(5) row mud slot 6 out of pipes

2, the structure characteristics:

due to the characteristics of the manufacturing solutions, it is high efficiency of the dissolved vapor, the separation of the mechanism of tiny bubbles generator, raw water, dissolved gas will water and medicine (all line hydrocyclone into) to make a rapid combination, release, flocculation, ascending and floating, tiny bubbles uniform, density, solutions to upper, ascending and floating rate stable zero speed, form the three-dimensional microcirculation state, ensure the tiny bubbles in waste and flocculation body full access, combined. No matter in combination with process or have combination of floc properties, are not the external force and destroyed their combination, floc properties of floating stability.

3, working principle:

Drug dispensing device: the flowmeter, dissolution, filtering, plastic board pumping (according to a certain proportion of the process) to floating slot tiny bubbles, and raw water and the generator dissolved gas water (to reduce load, dissolved gas water treatment available raw water) into the air bubbles generator, respectively by the soluble device of the relative stable pressure device, high density of dissolved gas role water and potions, raw water can quickly release pressure, ascending and floating, and to ensure the tiny bubbles in waste and flocculation body fully contact with the union, tiny bubbles rise when the upper of the suspended drive formed stable float layer, the three-dimensional microcirculation, tend to be stable, suspended solids in combination with the external force not easily in the process of destroying their union, water in stereo microcirculation function, in the mid-lower area around the storage solutions to clarify, the clear water come in exports. When floc properties in the tub to form stable plane floating layer, and rising to a certain level, with the nature from the tilt row mud slot, need not increase come in power equipment, when need time blowdown, close the valve (water) water valve, liquid level can rise, float layer out all completely. In addition the bottom not drain valve, precipitate the bottom of the dirt can regularly sewage.

III.The key technology and characteristics

1, the process of high efficiency

Floating processing efficiency, will depend on the unit volume gas water can dissolve of particles float the largest absolute weight. We will be defined as a unit float, this is dissolved gas water quality stand or fall of a objective indicators. Air belong to soluble in water, the atmosphere of the material, the air in the water solubility of about 1.8%, at 0.3 Mpa pressure, solubility can achieve 5.4%, how to let these limited dissolved air fully play their part, is the key technology of floating. The diameter of bubble and narrow, increase of density, improve bubble bubble evenness, is to improve the efficiency of air flotation key. The three are related with each other and check each other. A 100 mm bubbles if the volume of the 1 mm and become the bubble, the quantity can reach 106, so let solution in air under the premise of certain amount, narrowing the diameter of a single bubble, to increase the density of the bubble, and bubbles of the uniformity of the group also can be improved. Traditional floating efficiency is low, the most important reason is because of the bubble created by the diameter of bubble is too big, main body, the diameter of bubble in 50 mm commonly, the density of the bubble (away after dissolved vapor can unit volume of water bubble) is in commonly 108 a number of cm below, the bubbles group/uniformity (main body of the total number of bubble bubble number of proportion, more than 100 poor) in diameter of mm bubble accounts for more than 85%, these bubbles are invalid flotation bubbles. And because the bubble diameter is too large, lead to bubble rising too fast, cause flocculation body was broken, and the impact flotation effect is low. And this case produced tiny bubbles in about 1 mm in diameter, more than 1012 / cm3 density and, at the same time, even the size of the bubble, it ensures that the high treatment efficiency and very good result.

2, dissolved gas utilization rate

The case of the soluble gas utilization rate near 100%, the traditional evil vortex concave type floating only about 10%, and early floating about only 6%. Floating efficiency, with no big dissolved vapor efficiency relations, and finally depends on the utilization ratio of high and low dissolved vapor. To dissolve gas pressure, for example, from 0.3 Mpa to 0.5 Mpa, improve the solubility gas efficiency is the highest doubled, but the corresponding dissolved gas equipment on the structure is much more complicated, maintenance and corresponding complex.

Research shows that only than particles, flocculation before the single particles) the diameter of a bubble, ability and the particles happen effective adsorption effect. In natural water, inside short time difficult to precipitation of particles, its diameter is mostly in 10-30 mm, more than 50 mm of solid particles after a few hours of rest for, can sink or natural surface. The liquid particles floating in the main body size 0.25 2.5 mm, among them a few large particles between domestic about 10 mm of or so. So 1 mm or so tiny bubbles for the vast majority of suspended particles will have very good adsorption effect, this is also the case is high efficiency dissolved vapor direct reasons.

3, and deal with the high load

This scheme can handle SS content reaches as high as 5000 to 20000 mg/L of wastewater, the index is any traditional floating place cannot achieve. Traditional conventional floating can separate SS the highest content is in commonly 1000 mg/L or so, only in the SS content in hundreds of mg/L or so of wastewater has certain practical values.

4, convenient and practical pressure of dissolved gas

The scheme was designed using dissolve tank with traditional theory of different design basis, denied to hydraulic retention time for main basis design methods, realize the small dissolved gas productivity, and to increase the atmosphere, water contact area used the level 4 blends and institutions to gas, water in a few time can achieve a balance state.

5, and high efficiency of the bubble generator

Traditional floating because of its release is the defects and limitations, itself of flotation the deadly effect produce effect: such as vortex concave floating by using high speed rotating impeller will break the air inhaled and have bubbles, and whether high-speed rotating impeller impeller will also will flocculation body damage of mixing, suspended condensed, is the only way to have a bubble of this kind of structure can't produce 10 mm of the tiny bubbles. Because want through the mechanical shear produce tiny bubbles, first to overcome is the surface tension of the bubble, the smaller the bubble, the greater the surface tension, energy consumption is higher. At present the diameter of bubble for the smallest method is electrolytic, followed by dissolved vapor pressure. The case of the bubble generator, with its reasonable design, realization from the air dissolved vapor water to the tiny bubbles perfect transformation, has the following advantages:

(1) can maximize the elimination of the energy of the water dissolved vapor, that is, to maximize the dissolved gas water from that dissolve the high-energy value to balance almost close to normal pressure low-energy value. The water dissolved gas extinction is the transfer of energy can, not energy loss. The biggest consumption, it is to point to get physical good performance of tiny bubbles, under the prerequisite of the highest energy conversion. The scheme is used by the bubble generator can disappear than of up to 99.9%, and ordinary bubble generator highest only 95%.

(2) in the best can disappear than premise, has the fastest speed to reduce energy. That is has the shortest cut energy can in the shortest possible time, namely the energy to reduce time get cut the maximum energy than. The case of the bubble generator can disappear just 0.01-time of 0.03 seconds, while ordinary bubble generator also have the fastest 0.32 seconds.

(3) water dissolved vapor from high to low value in the process of value no eddy current, the flow pattern such as recoiling produce. As is known to all, the tiny bubbles formed after, as with a series of bubbles merge function. Merger by surface of the role is to reduce the spontaneous decided, two volume of the same bubbles after the merger, the surface can to reduce 20.63%. If in the release of the merger to exist in the bubble structure of words that through this device to achieve the desired tiny bubbles is impossible. Can only put an end to dissolve the eddy current, gas water recoil, fundamentally avoid of tiny bubbles merge.

IV.Equipment advantages

1, simple operation, high level of integration, there are no complicated machine equipment, high automation and can fully realize the unattended work

2, high efficiency, low cost of pure water treatment

3 and low investment, need not auxiliary of the civil engineering and affiliated equipments

4, low voltage operation, dissolved vapor high efficiency

5, long-term, stable performance, easy operation, easy maintenance, low noise

6, multi-layer row mud, make sure the water effect

V.Use scope

1, and is suitable for papermaking, petroleum, chemical industry, printing, dyeing, leather, electroplating, starch, hospitals, pharmacy, sewage, electricity production, brewing, coating, dairy processing of industrial waste water and life urban sewage.

2, but also can be used as the depth of the biochemical treatment after treatment.

VI.Operating rules

1, walk and infinitely variable speed machine and scraping the slag and infinitely variable speed machine to open.

2, and medicinal mixer open, coagulant dosage, dosing pump open (according to deal with waste water characteristics choose additive agent first varieties and dosage. Also through test to determine what they additive agent varieties and dosage, usually by users.) .

3, first running, walking frame and scum help speed variator charging Ub-1 lubricating oil, gear box charging gear oil; Each bearing parts, filling calcium synthesis grease; The rotating joint parts through the oil filling N32 by mechanical blending number or N22 cup, JiXieYou; Air compressor charging HS-19, (summer) and the HS-13 (winter) oil; Dissolved gas pumps and dosing pump bearing parts to fill lube normal position; Rotating supporting and 3 calcium and manufactured.

4, dissolved gas water stability, closed gate valve, dissolved air tank dissolve before and after air pump fill it with water.

5, air compressor, adjust the pressure reducing valve starting to 0.35 ~ 0.5 Mpa, to be dissolved air pressure to achieve 0.35 ~ 0.5 Mpa, open dissolved air pump, when pump at normal speed, then gradually open the gate, out to the necessary adjustment working conditions.

6, when dissolved air tank level gets to the specified level, soluble gate valves open after air tank.

7, through the floating host of ball screw the handle, the adjustment of the overflow weir height, make water treatment to the operating mode requirement.

8, adjust the water agencies of the rotating ball screw handle, all are equal water diversion dish.

9, according to the raw water quality and water quality, and adjust the walk with variable speed drive speed, inorganic its speed and diversion dish water speed are equal; Adjust the scum on inorganic variable speed drive speed, make the suspended the largest case in removal rate, for the shortest time needed for.

VII.Maintenance instructions

1, sludge valve open once every two days, after all, put the sludge valve shut off.

2, rotary bearing 100 hours running, should check a bolt preloaded force, every 400 hours after running a second look, and to ensure that there is enough preloaded force; Keep every 100 hours in rotating condition grease a, and make record. Tooth face often should remove debris, and coated with corresponding grease.

3, walking frame and scum of the inorganic variable speed machine work first period after 500 hours, replace new oil, and the internal pollution rinse; The second phase of the 1000 hours; The third period 2000 hours after, can be replaced every 2000 hours once. Always check the oil, make a mark in oil a keep oil midline position.

4, each place bearing filling a synthetic calcium per month and manufactured.

5, the rotating joint parts can through the oil filling N32 by mechanical blending number or N22 cup, JiXieYou.

6, air compressor charging HS-19, (summer) and the HS-13 (winter) lubricating oil. Keep the oil level of oil sightglasses center, continuous use, 500 hours after the replacement of a; After 250 hours, silencing filter cleaning a, 8 to 14 hours a water storage tank, every year will each part of the machine cleaned once.

7, dissolved gas pumps and dosing pump bearing parts often fill lube to normal position. If in the air temperature is below zero maintenance, when should be released, lest DongLie adjacent to the pump.

8, every three months loose a regulation of nuts, lie between flow circle to ensure isolation rubber layer and close contact with the bottom of the pool.

9, monthly check a carbon brush wear, carbon brush to wear only 10 mm, replace carbon brush.

10, the machine maintenance part:

Every year overhaul a, the mechanical and electrical equipment cleaning, lubrication and gas. Floating each subsystem of wearing parts and wear parts inspection, the need to change is replaced.

VIII.Notes to order

1. The unit in order before should provide detailed order water quality material.

2. Our factory can be based on user of water quality, water and provide the floor plan, design the system engineering layout and with water dimension drawing structures.

3. Our factory can be based on user needs to make special types and special water treatment equipment, and the design of the water project installation.