CN1435376A

CN1435376A - Device and method for purifying water

Info

Publication number: CN1435376A
Application number: CN 02111517
Authority: CN
Inventors: 余维波
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-24
Filing date: 2002-04-24
Publication date: 2003-08-13
Anticipated expiration: 2022-04-24
Also published as: CN1168670C

Abstract

A water cleaner is composed of an external conic casing with large top cross-section and small bottom cross-section, electromagnetic valve on its wall and an internal cylindrical barrel with mixer in it, clean water tank, overflow pipe and blowdown valve. When the deposition speed of PAC is equal to the speed of the carbon-water mixed liquid flowing upward, a PVC suspension layer is formed. The clean water is overflowed out and the PVC suspension is discharged via valve.

Description

A kind of water-purification plant and method thereof

Technical field

The devices and methods therefor that the present invention relates to purify water, especially Powdered Activated Carbon (PAC) as the carrier adsorption cleaning after, the equipment for separating liquid from solid of its charcoal water mixed liquid and method thereof.

Background technology

Charcoal absorption is widely used in the industrial and civilian water-treatment technology field already.For industrial sewage, waste water, general earlier through Wastewater Treated by Activated Sludge Process, again through activated carbon filtration, to reach the standard of environment protection emission; For sewage, the waste water of lower concentration, can directly behind activated carbon filtration, reach the standard of environment protection emission.For civilian tap water, can be earlier behind activated carbon filtration, and ultraviolet ray or ozone sterilization in addition, to reach the hygienic standard of directly drinking.Above-described activated carbon filtration adopts granular carbon (GAC) as sorbent material, and its equipment configuration as shown in Figure 2, and is simple in structure, and end water inlet through the active carbon layer Filtration Adsorption, is purified waste water and flowed out from the other end.The GAC that newly changes, decontamination effect improving is better.But also there is following shortcoming in this class active carbon filtering device: the one, and GAC is higher to the specification requirement of granular size, and particle is big, specific surface area is just little, though the flow velocity of water can increase, loading capacity is also little, and decontamination effect improving is poor, particle is little, its specific surface area height, loading capacity height, good purification, but resistance is big, and consumption of power is many and the flow velocity of water is slow.The 2nd, the decontamination effect improving instability, along with the prolongation of working hour, dirt and dissolve attitude COD constantly in activated carbon surface and inner the gathering causes the adsorption effect of gac constantly to descend, the water quality instability.The 3rd, except employed activated carbon granule size specification is had the requirement, also require it that higher physical strength is arranged, with opposing back flushing and the mobile fragmentation that causes, therefore must use the gac raw material of higher quality, the corresponding increase of cost.The 4th, refining plant need regularly quit work for some time, purifies the gac that requires so that change not reached.For overcoming above-mentioned defective, people have invented the method for utilizing PAC to purify water again, are widely used in the water treatment, especially are widely used in the former water treatment of water factory.But retrieving pertinent data according to the applicant finds, PAC behind the absorption dirt and the solid-liquid separation between the clear water are by precipitating or filtering two kinds of methods and finish at present, adopting coprecipitation mode to reach solid-liquid separation is a kind of primary method, no longer illustrates in this section; Adopt filter type realize solid-liquid separation as July 4 calendar year 2001 disclosed " purifying technology for micro polluted water source " (application number 99127050.9), its post-order process at the Powdered Activated Carbon bio-aeration pool is ultrafiltration apparatus and nanofiltration equipment, by filtration clear water is flowed out.In sum, realize solid-liquid separation, or build settling tank, or acquire filter plant, its investment is all bigger, and occupation of land side, and precipitation again or filtration all need expend the long time, also are unsuitable for moving uninterruptedly for a long time.Therefore, people expect to invent a kind of devices and methods therefor that settling tank or filter plant also can be realized charcoal water mixed liquid solid-liquid separation that need not, and have adsorbed saturated PAC and can be used as the fluidized biologic packing material again and use.

Summary of the invention

The objective of the invention is to overcome in the background technology by the deficiency of GAC as water treatment carrier, and by PAC as the carrier adsorption cleaning after, the defective of its charcoal water mixed liquid solid-liquid separation technique, providing a kind of need not to build settling tank and acquires filter plant, reduced investment integrates adsorption cleaning and solid-liquid separation process, can arbitrarily control the water-purification plant and the method thereof of water outlet water quality.

The present invention solves its technical problem and the technical scheme that adopts is: water-purification plant comprises urceolus, inner core, Rinsing Area, upflow tube and wash water valve, inner core places in the urceolus, Rinsing Area places the urceolus top, communicate with urceolus inside by upflow tube, wash water valve places outer tube bottom, the sectional area that it is characterized in that urceolus from bottom to top increases progressively gradually, is provided with mixed organization in the inner core, and the urceolus housing is provided with magnetic valve.

Described urceolus is truncated cone-shaped or the terrace with edge shape that upper bottom surface is big, bottom surface is little.

Described mixed organization is made of drinking-water pipe, water pump and return line, and drinking-water pipe one end is located at the inner core lower end, and the other end connects water pump, and return line one end is located at the inner core middle part, and the other end connects water pump.

Use the method for aforementioned water-purification plant to comprise: pre-treatment, throwing PAC, circulation mix, flow into urceolus, PAC suspension and six stages of solid-liquid separation, it is characterized in that:

A, inflow urceolus, the charcoal water mixed liquid upwards flow velocity in urceolus reduces gradually;

B, PAC suspend, and the charcoal water mixed liquid flow velocity that makes progress reduces to and inhales when having the PAC of dirt sedimentation speed identical formation PAC suspended layer;

C, solid-liquid separation, clear water are passed through PAC suspended layer continuation rising and are overflowed utilization, and PAC suspension is regular or continuous blow-down by magnetic valve.

Water-purification plant of the present invention and method thereof utilize PAC as absorption carrier, and its specific surface area is big, the loading capacity height.Need not to build settling tank or acquire filter plant, collect adsorption cleaning and solid-liquid separation process in same device, reduced investment is taken up an area of few.Can be continuously uninterrupted long-play, and can be by adjusting PAC add-on and PAC suspension discharge rate, control the water-quality guideline of water outlet, belong to a kind of equipment for separating liquid from solid and method thereof of novelty, can be widely used in the former water treatment field of industrial sewage, wastewater treatment and water factory.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is a GAC cleaner synoptic diagram.

Embodiment

As shown in Figure 1, water-purification plant of the present invention comprises urceolus 7, inner core 1, Rinsing Area 2, upflow tube 4 and wash water valve 12, and inner core 1 places in the urceolus 7, and Rinsing Area 2 places urceolus 7 tops, is communicated with urceolus 7 inside by upflow tube 4, and wash water valve 12 places urceolus 7 bottoms.Inner core 1 middle part is provided with return line 9, and the bottom is provided with drinking-water pipe 10, is connected with water pump 8 between drinking-water pipe 10 and the return line 9.Urceolus 7 middle and upper parts are provided with magnetic valve 11.Water to be clean injects from inner core 1 top, adds PAC simultaneously, in the time of near the mouth of pipe of the inner core 1 bottom drinking-water pipe 10 of flowing through, is subjected to the extraction of water pump 8, through drinking-water pipe 10, water pump 8 and return line 9, gets back to inner core 1 middle part again, and mixes again with the charcoal water of new injection.Circulation so constantly repeats, and water to be clean is reached with the PAC thorough mixing enough contact adsorption cleaning, has brought into play the maximum adsorption ability of PAC.After this, along with the continuous injection of charcoal water mixed liquid, the charcoal water mixed liquid is in inner core 1 bottom flows into urceolus 7, and it is mobile to make progress.Because the sectional area of urceolus 7 from bottom to top increases progressively gradually, the flow velocity that the charcoal water mixed liquid makes progress can reduce gradually, the flow velocity that makes progress when the charcoal water mixed liquid is reduced to and inhales the PAC that dirt is arranged and drown oneself speed downwards when identical, this PAC keeps static relatively at the constant speed liquid level position, and along with the continuous arrival of follow-up charcoal water mixed liquid, form gac suspended layer 6, carry out dynamic adsorption.The suspended substance, bacterium, the COD that flow to subsequently in the suspended layer 6 continue to be subjected to PAC absorption, and the clear water after the purification then passes through suspended layer 6 backs to be continued to rise, and forms settling section 5, flows in the Rinsing Area 2 through upflow tube 4.Clear water in the Rinsing Area 2 can directly discharge or utilization again by drainage tube 3 according to actual needs.In urceolus 7, be provided with magnetic valve 11 with gac suspended layer 6 opposite positions, can be regularly or continuous blow-down be in the PAC suspension of saturated adsorption-like, the solid-liquid separation process is complete.PAC suspension can be used as the active sludge biological filler and uses, and neither can produce secondary pollution, can improve the processing efficiency and the load of biochemical system again.The wash water valve 12 of urceolus 7 bottoms can be opened at any time, to discharge settled dirty slag.

Water-purification plant of the present invention is to use like this: for sewage, the waste water of high density, after Wastewater Treated by Activated Sludge Process, inject from inner core 1 top earlier; For sewage, the waste water of lower concentration, after the grid mechanical filter is removed solid matter, inject earlier from inner core 1 top; Former water for water factory, then directly inject from inner core 1 top, add PAC toward inner core 1 simultaneously, the water that injects relies on liquid level difference to flow downward, and the mixed organization thorough mixing that constitutes by drinking-water pipe 10, water pump 8 and return line 9 and enough contact adsorption cleaning, so that PAC reaches maximum adsorptive capacity, form the charcoal water mixed liquid.The charcoal water mixed liquid is in inner core 1 bottom flows into urceolus 7, and it is mobile upwards to slow down gradually, the flow velocity that makes progress when the charcoal water mixed liquid is reduced to and inhales the PAC that dirt is arranged and drown oneself speed downwards when identical, this PAC keeps static relatively at the constant speed liquid level position, and along with the continuous arrival of follow-up charcoal water mixed liquid, PAC assembles formation gac suspended layer 6, carries out dynamic adsorption.The suspended substance, bacterium, the COD that flow to subsequently in the suspended layer 6 continue to be subjected to PAC absorption, and the clear water after the purification then passes through suspended layer 6 backs to be continued to rise, and forms settling section 5, until overflowing discharging or recycling.

In the water purification process,, can reduce, its liquid level is descended from inner core 1 vertical injection speed if the liquid level of suspended layer 6 is higher; Otherwise, if the liquid level of suspended layer 6 is on the low side, can increase from inner core 1 vertical injection speed, its liquid level is risen, so that PAC suspension is by magnetic valve 11 regular or continuous blow-downs, to keep suitable bed thickness.

Water-purification plant of the present invention and method thereof utilize PAC as absorption carrier, and its specific surface area is big, the loading capacity height.Extract the PAC that discharging has been adsorbed from the suspension Guinier-Preston zone, therefore need not to build settling tank or acquire filter plant, reduced investment.Can run without interruption continuously,, arbitrarily control the water outlet water-quality guideline by adjusting PAC amount and the PAC suspension discharge rate that adds in the inner core 1.

Claims

1, a kind of water-purification plant, comprise urceolus, inner core, Rinsing Area, upflow tube and wash water valve, inner core places in the urceolus, Rinsing Area places the urceolus top, communicated with urceolus inside by upflow tube, wash water valve places outer tube bottom, it is characterized in that the sectional area of urceolus from bottom to top increases progressively gradually, be provided with mixed organization in the inner core, the urceolus housing is provided with magnetic valve.

2, water-purification plant as claimed in claim 1 is characterized in that urceolus is truncated cone-shaped or the terrace with edge shape that upper bottom surface is big, bottom surface is little.

3, water-purification plant as claimed in claim 1 or 2 is characterized in that mixed organization is made of drinking-water pipe, water pump and return line, and drinking-water pipe one end is located at the inner core lower end, and the other end connects water pump, and return line one end is located at the inner core middle part, and the other end connects water pump.

4, a kind of method for purifying water comprises pre-treatment, throws PAC, circulates and mix, flow into urceolus, PAC suspension and six stages of solid-liquid separation, it is characterized in that: