CN1145586C

CN1145586C - Pressolution electrolytic pressolution biochemical multifunctional air-float complete sets of equipment

Info

Publication number: CN1145586C
Application number: CNB991152603A
Authority: CN
Inventors: 邬建平
Original assignee: CHANGSHA YEQU'OU ENVIRONMENT PROTECTION SYSTEM ENGINEERING Co Ltd
Current assignee: CHANGSHA YEQU'OU ENVIRONMENT PROTECTION SYSTEM ENGINEERING Co Ltd
Priority date: 1999-02-11
Filing date: 1999-02-11
Publication date: 2004-04-14
Anticipated expiration: 2019-02-11
Also published as: CN1263050A

Abstract

The present invention relates to a pressolution and electrolytic pressolution biochemical multifunctional air-floating complete device which integrates multiple water processing functions of electrochemical oxidation and reduction, electric physicochemical flocculation, pressolution biochemistry, separation, etc. The device adopts the basic principle of linear combination of physicochemistry and biochemistry; organic sewage in the device is firstly preprocessed by electrochemical physicochemistry and is then processed through high-efficiency pressolution biochemical processing, and finally the organic sewage is processed by electrochemical physicochemistry; clear water and concentrated floating slag are respectively and continuously discharged. The device has multiple water processing functions and good combination performance, and is suitable for further processing industrial sewage and urban integrative sewage in high, middle and low high concentration in order to reach the discharge standard; the present invention is suitable for processing organic sewage in super-high concentration through anaerobic biochemical processing, and the organic sewage is processed by the device through one step in order to reach the standard.

Description

Pressolution electrolysis pressolution biochemical gas floating plant

Technical field

The invention discloses a kind of novel organic polluting water treatment technology process system-" Pressolution electrolysis pressolution biochemical gas floating plant ".This device has adopted the electrochemistry physico-chemical process to add the linear bonded principle of biochemical process, has multiple water treatment function and remarkable over-all properties, is adapted to many industrial sewage one step processing qualified discharges; Be adapted to the step processing qualified discharge of biochemical industry class industry extra heavy concentration organic sewage after anaerobic treatment; Be adapted to urban comprehensive wastewater one step processing qualified discharge.

Background technology

Adopting air-floating apparatus to handle the comparatively advanced technology of organic polluting water now is " comprehensive air floating system for pressure dissolution electrolysis ", and its number of patent application is: 981127754.Above-mentioned patent principle be utilize flocculation agent and sneak in the flocculation agent trace sodium-chlor and (or) the electrochemistry physicals of ferrous sulfate, in conjunction with electrofloatation and the pneumatically supported function of pressure solution, organic polluting water is carried out electrochemical redox reaction; Electricity materialization flocculation reaction; Microbubble and flocs unit copolymerization catching reaction and the three-phase solid substance that above-mentioned reaction is produced carry out solid-liquid separation up hill and dale, thereby purify water energy-efficiently.Its process principle figure such as accompanying drawing 1, Fig. 2, shown in Figure 3.Its detailed process principle is as described in its patent specification.

" comprehensive air floating system for pressure dissolution electrolysis " handled up to standard though have respectively than the more comprehensive high-performance of pressure solution air supporting and electrofloatation and the wider scope of application but still can not be suitable for a step in some occasion.Such as to some BOD ₅The middle and high concentration organic waste water of/CODcr=0.37～0.47, this waste water have the numb waste water (BOD of system ₅/ CODcr=0.39～0.42), chemical fibre slurry pool waste water (BOD ₅/ CODcr=0.41～0.43), is mixed with the papermaking midcourse wastewater (BOD of a small amount of black liquor ₅/ CODcr=0.44～0.48), pharmaceutical factory of traditional Chinese medicine's waste water (BOD ₅/ CODcr=0.38～0.40), urban comprehensive wastewater (BOD ₅/ CODcr=0.38～0.52) or the like.

Cr is generally at 900～4000mg/L for this class COD of sewage, need adopt earlier and adopt after the biochemical treatment " comprehensive air floating system for pressure dissolution electrolysis " to handle again, can use water quality and reach primary standard, but cause that total engineering increases and many investments, and working cost is also higher.If only adopt " comprehensive air floating system for pressure dissolution electrolysis " to handle this type of waste water, can only reach secondary discharge standard, and working cost be still undesirable.

Some organic polluting water is worked as BOD for another example ₅/ CODcr is more than or equal to 0.48, the concentration extra-high-speed.Such as malting effluent, fermentation waste water, sugar production wastewater, leather waste water, plant's waste water etc., its CODcr=10000～50000mg/L, even it is higher, general adopt after the anaerobic treatment again aerobic biochemical to handle materialization again to handle, investment is too big like this, if adopt " comprehensive air floating system for pressure dissolution electrolysis " though investment is little, working cost is higher.

Also have some organic sewages, though concentration is not high, CODcr is less than or equal to 2000ng/L, BOD ₅/ CODcr is more than or equal to 0.48, and it is up to standard to use " comprehensive air floating system for pressure dissolution electrolysis " to handle in a step, and working cost is expensive.For example the urban comprehensive wastewater promptly so.

" comprehensive air floating system for pressure dissolution electrolysis " can only be suitable for BOD5/CODcr smaller or equal to 0.36, and following one step of processing of concentration 3500mg/L reaches secondary discharge standard; 3000mg/L is being issued to first discharge standard, but working cost still is not optimal situation.

The solvability organic pollution materials is divided into two classes in the organic polluting water, one class is the polarity organic molecule, surface one end shows positive charge, the other end shows negative charge, similar with water molecules, they are hydrophilic, and they are difficult to be handled and be difficult to by materialization handled by the electrochemistry materialization, but are easy to by biochemical treatment, another kind of is nonpolar organic molecule, the surface neutral, they are hydrophobic, are easy to by the materialization flocculation treatment and are very easily handled by the electrochemistry materialization, be not easy to by biochemical treatment, all there is this two classes material in each organic sewage, and just what are different, available BOD ₅The value of/CODcr characterizes, and this numerical value is big more, is easy to biochemistry more, shows that the wetting ability polar molecule is many more; Numerical value is more little, shows that the hydrophobicity non-polar molecule is many more, is easy to materialization more.In the sewage physicochemical treating processes, wetting ability polar molecule treating processes has inhibition, BOD ₅The value of/CODcr is big more, and its inhibition is big more, works as BOD ₅The value of/CODcr is big more, and its inhibition is big more, works as BOD ₅When/CODcr arrived a certain numerical value greatly, the materializing procedure utmost point was difficult to carry out.

In biochemical processing procedure of sewage, the hydrophobicity non-polar molecule also has inhibition, BOD to the biochemical treatment process ₅The value of/CODcr is more little, and its inhibition is big more, works as BOD ₅/ CODcr is little during to a certain numerical value, and the biological process utmost point is difficult to carry out.

The biochemical treatment process is to BOD ₅Clearance comparison CODcr clearance is high by 10～15%; The materialization treating processes is to CODcr clearance comparison BOD ₅Clearance high by 12～17%.

So in the arbitrary technological process of sewage disposal, BOD ₅/ CODcr is not a constant, is time dependent, along with the carrying out of biochemical processing process, and BOD ₅It is more little that the value of/CODcr becomes gradually more, more and more is unfavorable for biochemical treatment at leisure, biochemistry is reached capacity, and water quality usually can't be up to standard.

General BOD ₅/ CODcr can be biochemical more than or equal to 0.33, BOD ₅The value of/CODcr is good biochemical greater than 0.38.

For the organic waste water that is easy to biochemical treatment, such as BOD ₅/ CODcr=0.42, CODcr=3500mg/L requires 450mg/L up to standard.Use biochemical treatment, at general time of beginning, BOD ₅The value of/CODcr progressively descends, and removes the CODcr of unit institute time-consuming, and energy consumption is near constant, and the clearance of investment and energy consumption and CODcr is a linear relationship.Work as BOD ₅The value of/CODcr is little during to a certain numerical value, greatly when 0.33 left and right sides, remove the CODcr of unit institute time-consuming, energy consumption and investment are not constants, the clearance of investment and energy consumption and CODcr is a nonlinear relationship, and curve is more and more precipitous, and at this moment the CODcr value also far can not be up to standard, and CODcr is also about 1750mg/L.Now both at home and abroad the popular traditional technology continues biochemical treatment exactly until for this reason up to standard, perhaps arrive biochemical terminal point, or else can biochemistry just stop biochemistry.The aerobic biochemical treatment process of all extended aerations all belongs to this type of both at home and abroad at present, causes investment extremely huge, far is not that it bears in our developing country.And analysis and inexpensive on the working cost surface, but adding depreciation and interest, its working cost is just surprisingly big.Take up an area of also extremely greatly,, can not bear again for the poor country of China's cultivated area.

Build 32 urban comprehensive wastewater treatment station such as the planning in 1998 of territory, lake, Taihu Lake, Chinese environmental newspaper report will have only 4 to start building the end of the year 98 in 1998.All be that other engineering is not within the foreseeable future because investment is too big.

Not operation of nearly hundred municipal effluent stations, the whole nation 90% now all is to cause because working cost is too expensive.This all is because biochemistry and materialization processing is not carried out due to the linearity combination.

Work as BOD ₅/ CODcr is smaller or equal to 0.38, but BOD is handled in materialization ₅/ CODcr handles it less than 0.33 good materialization.

Be easy to the waste water that materialization is handled for certain, such as BOD ₅/ CODcr=0.35, (papermaking midcourse wastewater, recycled writing paper comprehensive wastewater etc.), CODcr=1500～1800mg/L.This class waste water can reach secondary standard with one step of materialization treatment process, and CODcr is smaller or equal to 450mg/L.In treating processes, BOD ₅/ CODcr is along with the dosage increase progressively becomes big.Be about 50% about the CODcr clearance greatly, BOD ₅/ CODcr has become in about 0.38.The amount of consumption of drugs of removing the CODcr of unit is near constant, and dosage and working cost and CODcr clearance are linear relationships; At this moment continue materialization again, increase dosage, the amount of consumption of drugs of removing the CODcr of unit has not been constant, and dosage, working cost and CODcr clearance are nonlinear relationships, and curve is more and more precipitous.At this moment should not handle with materialization, less expensive is to one's profit and should handle just with biochemical process, but so just causes whole engineering complexity again, and taking up an area of also increases, management is inconvenient, though working cost is much lower, invests many with regard to corresponding increase, do not calculate yet, have no idea, have only materialization on earth.Existing China Basin of Huaihe River has more than 300 industrial sewage treatment project, adopted one step of physicochemical techniques to handle qualified discharge, but working cost is high as can not to bear, and has only the operation on daytime, and not dosing at night belongs to the engineering failure.

The electrochemical oxidation of " comprehensive air floating system for pressure dissolution electrolysis " and institute's intension thereof, reduction, electric materialization flocculation technique have great improvement than common physico-chemical process, reduced working cost significantly and guaranteed that effluent quality is up to standard, enlarged subject range, reduced sludge yield or the like, but still on the low side to the polarity organic molecule clearance that is easy to biochemistry in the organic sewage, this is because " comprehensive air floating system for pressure dissolution electrolysis " do not have the biochemical treatment function.

General middle and high concentration organic sewage should adopt first physico-chemical pretreatment, biochemical treatment again, operation ability economic and reliable up to standard and special is handled in materialization again, if these functions are finished in a device, just can make total engineering investment descend more than 50%, take up an area of to descend 60% being, manage also easyly, Here it is, and biochemistry adds materialization linearity bonded principle.

Summary of the invention

The present invention's " Pressolution electrolysis pressolution biochemical gas floating plant " just is based on above-mentioned principle and other various technical know-hows, and biochemistry adds the linear bonded requirement of materialization and invents its technological principle and accompanying drawing 4, Fig. 5, shown in Figure 6.

It is by air flotation pool body 410, the biochemical release system of pressure solution, be installed in the slag scraper 430 on air flotation pool body 410 horizontal planes, be connected on the outer scum silica frost jar 440 that connects by slag-guiding plate of air flotation pool body 410 afterbodys, electrolytic system, be placed in the electrical control system 460 of air flotation pool body 410 outsides, be connected on air flotation pool body 410 front ends and tap into the water inlet piping of air flotation pool body 410 reaction zones 411 bottoms, insert pharmacy administration system in the biochemical release system of water inlet piping and pressure solution respectively by air flotation pool body 410 outsides, be connected on the sludge pump 490 of scum silica frost jar 440 mud discharging mouths and supporting pipeline valve cable and form.

Air flotation pool body 410 is by reaction zone 411, the first electrolysis capture areas 412, the first solid-liquid displacement zone 413, the second electrolysis capture areas 414, the second solid-liquid displacement zone 415, and clear water zone 416 is formed.

The pressure solution biochemical system is by molten gas water intaking piping 421 serial connection dissolved air water pumps 422, dissolved air water pump 422 exports to pressure solution Biochemical pot group 423, pressure solution Biochemical pot group 423 is received power generating type dissolved gas releaser or simple type dissolved gas releaser 424, air compressor machine 426 outlets connect gas holder 425, then with supporting 423 interior compositions of pipeline valve access pressure solution Biochemical pot group.

Electrolytic system is received voltate regulator 451 by exchanging input cable 455, voltate regulator 451 is connected with transformer 452 inlets, transformer 452 outlets are connected with rectifier 453, and rectifier 453 links together also with electrode group 454 by direct current output cable electricity row 456 and interconnective cable electrical equipment is formed.

Slag scraper 430 is the continuous slag scrapers of chain-belt type, and it is installed on the horizontal plane of air flotation pool body 410.

The pharmacy administration system is received by A medicine thinning tank 482 and is thrown A Teat pipette 483, throws A Teat pipette 483 and exports to throwing A pencil joint 484,485; M medicine thinning tank 487 is received and is thrown M Teat pipette 488, throws 488 outlets of M Teat pipette and receives and throw M pencil joint 489 and the pipeline valve that is interconnected, flow instrument etc. and form.

The water inlet piping is received line mixer 472 by raw water tubes 471, receives from air flotation pool body 410 front ends again and passes through to the water distributor 473 of reaction zone 411 bottoms and the valve that matches is formed.

Stirring slag ladle 440 is connected with air flotation pool body 410 by slag-guiding plate 441.

Electrical control system 460 is made up of automatically controlled group 461 and cable etc.Be responsible for slag scraper 430 is stirred slag ladle 440, the pharmacy administration system, enforcements such as the biochemical release system of pressure solution drag control.

The first electrolysis capture area 412 of air flotation pool body 410 and the bottom of the second electrolysis capture area 414 100mm ± 50mm place at the bottom of the pond is equipped with the power generating type dissolved gas releaser or the simple type dissolved gas releaser 424 of the biochemical release system of pressure solution, and its top is equipped with the electrode group 454 of electrolytic system.

Air flotation pool body 410 first solid-liquid displacement zone 413 bottoms are equipped with the molten gas water intaking piping 421 of the biochemical release system of pressure solution, and this piping is made up of several perforated tubes, pass pool wall separately and converge into a house steward and be connected with dissolved air water pump 422.

Air flotation pool body 410 second solid-liquid displacement zone 415 bottoms are equipped with porous collection clear water pipe group 417 their feeding clear water zones 416.Altitude valve door 418 is installed in the clear water zone 416, and clear water zone 416 externally also is equipped with and clears water pipe 419.

The water distributor 473 of water inlet piping extends in the bottom of the reaction zone 411 of air flotation pool body 410.

Throwing A pencil contact 484 is installed on the water intake end of line mixer 472, another contact 485 is installed on the suction medicine hole of power generating type machine for releasing in the second electrolysis capture area or simple type dissolved gas releaser 424, throws M pencil joint and is installed on the suction medicine hole of power generating type machine for releasing in the first electrolysis capture area 412 or simple type dissolved gas releaser 424.

When adopting power generating type dissolved gas releaser 424, the output cable of power generating type dissolved gas releaser 424 with exchanges input cable 455 and is connected, rectifier 453 is arranged 456 and is connected with electrode group 454 by the direct current output cable is electric.

When adopting simple type dissolved gas releaser 424, the interchange of electrolytic system input cable 456 is connected by plug-in strip, contactor match appliance with electrical control system 460.

Pressure solution Biochemical pot group 423 is made up of 2 or 6 living pressure solution Biochemical pots 4211 of structure working principle, as shown in Figure 7.

Pressure solution Biochemical pot 4211 is by tank body 4231, the water inlet pipe 4239 at tank body 4231 tops, be installed in the water distributor 4232 of tank body 4231 inner tops, be installed in the water monitor 4234 that tank body 4231 outer middle and upper parts are connected with tank body 4231 by tube stub, be installed in the content gauge 4235 that tank body 4231 outer middle and upper parts are connected with tank body 4231 by tube stub, the visor window 4236 of tank body 4231 outer middle and upper parts, be installed in the grills 4233 of middle and upper part in the tank body 4231, be installed in the aperture plate 4237 of middle and lower part in the tank body 4231, the rising pipe 4238 that is installed in tank body 4231 bottoms is formed, be placed with the thick 800mm ± 50mm that is on the grills 4233, specification is the cascade ring 4230 of 20～40mm, is placed with the ball dish magnetic biological filling material of thick 1000mm ± 200mm or the spherical biological filler 4200 of other models on the aperture plate 4237.

The ball-type biologic packing material 4200 of ball dish magnetic biological filling material or other shapes is made by polyethylene, polypropylene, polyvinyl chloride composite plastic, and its surface has micromagnetism or has little electric charge by modifying plastics.They all have great specific surface area, are convenient to the biological bacteria growth that falls thereon biofilm.4237 times 50mm places of aperture plate are horizontally installed with several porous air manifold tubes 4212, and they pass tank skin and are connected with gas holder 425.

Various electromechanical equipment equipment in apparatus of the present invention adopt the standard of country's (world) standard, and equipment such as various pipeline valves adopt the standard of " plumbing design manual " standard.The ball-type biologic packing material also is to adopt at present popular product both at home and abroad.The simple type dissolved gas releaser employing patent No. is 882050508 technology, this technology is to be applicable to the air supporting ore dressing and to be specially adapted to various capacity specifications, the feedwater of various character and sewage air-flotation are handled centrifugal water-wheel machine for releasing dissolved gas, this machine comprises centrifugal micro hydraulic turbine and generator, centrifugal micro hydraulic turbine has casing, in this casing guide vane wheel is arranged, and casing is connected with cover and is provided with the centrifugal runner that is contained in the rotating shaft in the chamber that forms, centrifugal runner is installed in the rotating shaft, rotating shaft is connected with alternator shaft, and cover is connected with generator and sealer is housed in the chamber that is split into and the rotating shaft.This centrifugal water-wheel machine for releasing dissolved gas and having with the efficient function that discharges of dissolved air water.

This device technique principle is as follows: former water enters this device by water inlet pipe 471, after having added inorganic flocculating agent A medicine, in line mixer 472 short mix, enter air flotation pool reaction zone 411 through water distributor 473, through the reaction flocculation, bear little flocs unit, flow into effusive high density microbubble and micro-the polymer coagulant aids M medicine outgas water uniform mixing that contains of containing of the first electrolysis capture area and machine for releasing 424, percolation is crossed electrode group 454 together, under effect of electric field, finish electrochemical redox reaction simultaneously, electricity materialization flocculation reaction and microbubble and flocs unit bonded copolymerization catching reaction, the organic pollution materials in the organic waste water, mainly be that hydrophobic organic pollutant matter and most solid suspension material are cured in flocs unit; Flocs unit folder hangs with a large amount of microbubbles, flow into first disengaging zone 413 with water body after, just emerge, clear water is all taken away by dissolved air water pump 422 by molten gas water intaking piping 421 and is pressed in the input pressure solution Biochemical pot group 423.This one-level electrochemistry materialization is handled, and dispensing is few, and organic sewage CODcr clearance is had only 40% to 45%, but BOD at this moment ₅The value of/CODcr has become greater to more than 0.38, makes biochemistry be easy to carry out, and materialization is difficult for carrying out again, and the clearance of dosage and CODcr has entered the inelastic region soon.Water body at this time carries out pressure solution aerobic biochemical process in pressure solution Biochemical pot group 423.Jar internal pressure about 0.15 is to 0.22Mpa, and concentration of oxygen gas is about 15 to 22mg/L, about 40min to 120min of the residence time.Water body CODcr in this jar is removed 50% to 55%, BOD again ₅Be removed 65～80%, water quality is near up to standard, but its BOD ₅/ CODcr value has been varied down to and no longer has been easy to biochemical treatment, has but very easily handled in materialization.At this moment water body leaves pressure solution Biochemical pot group 423 and flows into dissolved gas releaser 424 through pipeline valve.Sub-fraction about 10% enters the dissolved gas releaser 424 in the first electrolysis capture area 412, discharges the high density microbubble through energy transformation; Most of about 90% water body enter dissolved gas releasers 424 in the second electrolysis capture area 414, in dissolved gas releaser 424, mix with the flocculating agent A medicine, discharge the high density microbubble through energy transformation, the electrode group 454 of water body from passing the second electrolysis capture area 414 after dissolved gas releaser 424 flows out, finish electrochemical oxidation once more, reduction reaction, electricity materialization flocculation reaction, the copolymerization catching reaction of microbubble and flocs unit, remaining dissolving organic pollution materials is cured in flocs unit in biochemical solid matter that produces of pressure solution and the water body, enter second solid-liquid displacement zone 415 with current, scum silica frost emerges, clear water is collected by collection clear water pipe 417 and is flowed into clear water zone 416, effluxes by clearing water pipe 418.

Scum silica frost is scraped into slag-guiding plate 441 continuously by slag scraper 430, falls into to stir slag ladle 440 and transport to the water extracter press filtration by sludge pump at last and become cake through stirring froth breaking, to eliminate secondary pollution.

Air compressor machine 426 provides biochemical with oxygen and air supporting gas to pressure solution Biochemical pot 4211 continuously through gas holder 425 and the pipeline that is connected.

Power generating type dissolved gas releaser 424 (maybe when adopting simple type dissolved gas releaser 424, electrical control system) is by exchanging input cable 455, voltate regulator 451, and transformer 452, rectifier 453, direct current output cable electricity row 456 provides direct current to electrode group 454.Its voltage is 4.5 to 6 volts.

The pharmacy administration system is continuously to the device dispensing.

Electrochemistry materialization is for the second time handled still has only 65% to the CODcr clearance, dispensing operation in linearity range, but whole device has reached 86～93%, BOD to the clearance of CODcr ₅Clearance also reach 86～92%.All in linearity dispensing scope, biochemical oxygenation does not increase power consumption to twice materializing procedure of this device yet, just utilizes pressure air-dissolving oxygen more than needed, so the energy-efficient water quality that purified of this device.

The present invention's " Pressolution electrolysis pressolution biochemical gas floating plant " has following 5 points with the technical characterictic of " comprehensive air floating system for pressure dissolution electrolysis " essential distinction:

1, pressure solution Biochemical pot group 423 of the present invention is composed in series by many, and they have pressure air-dissolving and pressure solution function estranged simultaneously; Be placed with ball dish or spherical biological filler 4200 in jar; Water body residence time 40min to 120min in jar; Operating pressure is 0.15 to 0.22Mpa in jar.The pressure air-dissolving tank 323 of " comprehensive air floating system for pressure dissolution electrolysis " has only one, lifeless matter filler in jar, function singleness; The water body residence time 4 is to 7min in jar; Operating pressure 0.3～0.38Mpa in jar.

2, dissolved air water of the present invention is a full flow type, extracted out by the molten gas water intaking piping 421 of first solid-liquid displacement zone 413, and the dissolved air water of " comprehensive air floating system for pressure dissolution electrolysis " is the partial reflux formula, is extracted out from clear water zone 316 by return line 321.

3, the present invention is when operation, have a mind to control very for a short time at the flocculating agent A dose that line mixer 472 water intake ends add, be 20% to 30% of total dosage, have a mind to make the clearance of the first

electrolysis capture area

412 and 413 couples of CODcr of first solid-liquid displacement zone to be controlled in 40% to 50% the scope; And it is bigger to throw the A dose first time of " comprehensive air floating system for pressure dissolution electrolysis ", and the CODcr value is finished in the fs base conditioning, and the follow-up remnants that just handle play safety effect.

4, " comprehensive air floating system for pressure dissolution electrolysis " do not have the biochemical treatment function fully.And the present invention has the function of electrochemical oxidation, reduction, electric materialization flocculation and biochemical treatment simultaneously.

5, the present invention is higher than " comprehensive air floating system for pressure dissolution electrolysis " 4 to 6 percentage points to the clearance of CODcr, to BOD ₅Clearance be higher than 10 to 25 percentage points.

Because above-mentioned these essential distinctions make working cost descend 30% to 50%, and matter are better.Though the single assembly investment has increased by 75% to 100%, owing to simplified total engineering, make total engineering just can make one step of sewage disposal up to standard with this device by water collecting basin to most of middle and high concentration, make the investment of total engineering descend 45% to 50%, in addition more; Take up an area of and reduce about 80%.

Description of drawings:

Fig. 1, comprehensive air floating system for pressure dissolution electrolysis technological principle vertical planning drawing;

Fig. 2, comprehensive air floating system for pressure dissolution electrolysis technological principle orthographic plan;

Fig. 3, comprehensive air floating system for pressure dissolution electrolysis pressure solution release and administration system artwork;

Fig. 4, Pressolution electrolysis pressolution biochemical gas floating plant technological principle vertical planning drawing;

Fig. 5, Pressolution electrolysis pressolution biochemical gas floating plant technological principle orthographic plan;

Fig. 6, the biochemical release system of Pressolution electrolysis pressolution biochemical gas floating plant pressure solution and administration system artwork;

The pressure solution Biochemical pot structural representation of Fig. 7, Pressolution electrolysis pressolution biochemical gas floating plant.

Embodiment

This project design example is as follows:

To the northern China urban comprehensive wastewater, raw water quality:

CODcr=900 to 1100mg/L

BOD ₅=360 to 450mg/L

SS＝350～450mg/L

PH value=6.5～7.5

Colourity=250～450 times.

The requirement effluent quality is up to standard: primary standard in " GB8978-96 ".

CODcr is smaller or equal to 60mg/L

BOD ₅Smaller or equal to 20mg/L

SS is smaller or equal to 20mg/L

PH value=6～9

Colourity is smaller or equal to 50 times

To 100,000 m ³The sewage plant of/d earlier through grid, after the desilting pre-treatment, is handled through apparatus of the present invention again, adopts 10 covers, 10,000 m ³/ d specification.

Every cover air flotation pool body length 15m, wide 4.2m, the dark 2.6m in pond, depth of water 2.3m.

Three 30KW of dissolved air water pump, (IS150-125-315) two operations, one is standby.Three 7.5KW of raw water pump (IS150-125-160), two one of operations are standby.Power consumption degree 65 degree/hour.

Slag scraper installed capacity 1.5KW, pharmacy administration system 6.5KW stirs slag ladle 1.5KW.Air compressor machine two 5.5KW (P0.35Mpa, Q1m ³/ min), the using and the reserved.

4 6000mm of pressure solution Biochemical pot, total residence time 50min.

One covering device takes up an area of 230m ²(B10 * L23m).

Total power consumption 710 degree of 10 covers/hour, spend every days 17040.

Amount of consumption of drugs: the first step is thrown flocculation agent 50mg/L, and 100mg/L is thrown in the second stage; Throw coagulant aids M medicine 5mg/L.Every day, every covering device consumed medicine, A15000kg, M1000kg (sludge dewatering consumption 5mg/L).

0.5 yuan/kg of A medicine valency.

0.45 yuan/kg of M medicine valency.

Electricity price: 0.6 yuan/degree.

Comprise artificial, depreciation, 0.29 yuan of overall running cost.

Total engineering total installation of generating capacity 1400KW (comprising machine sound of laughing grid, sludge dewatering etc.).

4,800 ten thousand yuan of total engineering gross investments.

Total engineering is total takes up an area of about 20 mu.

If adopt traditional both at home and abroad now extended aeration art breading it, total investment of engineering must 1.2 to 1.3 hundred million yuans, take up an area of 150 to 180 mu, move 0.68 yuan/m of total expenses ³～0.95 yuan/m ³

In sum, the present invention has tangible advance, and novelty and practicality not only are suitable for developing country and are used for environment-friendly engineering processing organic sewage, also are suitable for western developed country.

This contrive equipment has the function that purifies water energy-efficiently, and makes total supervision of construction easy, and is not competent to minority organic polluting water when playing inhibiting material (contain biochemistry).This invention almost is applicable to the clean water treatment of all organic polluting waters, can make handle up to standard most of one steps of basic, normal, high concentration organic sewage; Make the extra heavy concentration organic sewage after anaerobic biological is handled, handle up to standard with this one step of device again.The water body that this invention also is adapted to be subjected to organic micro-pollution carries out water supply purification to be handled.

Claims

1, a kind of Pressolution electrolysis pressolution biochemical gas floating plant, it is characterized in that: this device is by air flotation pool body (410), the biochemical release system of pressure solution, be installed in the slag scraper (430) on air flotation pool body (410) horizontal plane, be connected on the outer scum silica frost jar (440) that connects by slag-guiding plate of air flotation pool body (410) afterbody, electrolytic system, be placed in the outside electrical control system (460) of air flotation pool body (410), pass and tap into the water inlet pipe system of reaction zone (411) bottom of air flotation pool body (410) from air flotation pool body (410) front end, by the outside pharmacy administration system that inserts respectively in water inlet pipe system and the biochemical release system of pressure solution of air flotation pool body (410), being connected on the sludge pump (490) of scum silica frost jar (440) mud discharging mouth and supporting pipeline valve cable forms, the top of air flotation pool body (410) the first electrolysis capture areas (412) and the second electrolysis capture area (414) is equipped with electrode group (454), the bottom is equipped with dissolved gas releaser (424), exchanging input cable (455) is connected with voltate regulator (451), voltate regulator (451) is connected with the input terminus of transformer (452), rectifier (453) is connected with the output terminal of transformer (452), direct current output cable electricity row (456) links together rectifier (453) and electrode group (454), arrive pressure solution Biochemical pot group (423) again after being positioned on molten gas water intaking piping (421) the serial connection dissolved air water pump (422) of air flotation pool body (410) first solid-liquid displacement zone (413) bottoms, pressure solution Biochemical pot group (423) outlet is connected with dissolved gas releaser (424), air compressor machine (426) connects gas holder (425), and gas holder (425) is received in the pressure solution Biochemical pot group (423) by pipeline valve.

2, Pressolution electrolysis pressolution biochemical gas floating plant according to claim 1; It is characterized in that molten gas water intaking piping (421) is made up of several perforated tubes, be installed in bottom, first solid-liquid displacement zone (413) pond and pass pool wall separately, converge into a house steward and be connected with dissolved air water pump (422).

3, Pressolution electrolysis pressolution biochemical gas floating plant according to claim 1, it is characterized in that, the pressure solution electrolysis Biochemical pot (4211) of pressure solution Biochemical pot group (423) is by tank body (4231), the water inlet pipe (4239) at tank body (4231) top, be installed in the water distributor (4232) of tank body (4231) inner top, be installed in the grills (4233) at place, the interior middle and upper part of tank body (4231), being placed with thick cascade ring plastic filler (4230) specification for 800mm ± 50mm on the grills (4233) is 20～40mm, be installed in the water monitor (4234) that is connected with tank body (4231) by tube stub outside tank body (4231) middle and upper part, be installed in the content gauge (4235) that the outer middle and upper part of tank body is connected with tank body (4231) by tube stub, be installed in the aperture plate (4237) of the interior middle and lower part of tank body (4231), be placed with the spherical biological filler (4200) of thick 1000 ± 200mm ball dish magnetic biological filling material or other model on the aperture plate (4237), be installed in aperture plate (4237) the bottom several gas distribution perforated tubes (4212) parallel with aperture plate (4237), be installed in the rising pipe (4238) of tank body (4231) bottom, the visor window (4236) that is installed in the outer middle and upper part of tank body (4231) is formed.

According to the described Pressolution electrolysis pressolution biochemical gas floating plant of claim 1, it is characterized in that 4, the operating pressure of pressure solution Biochemical pot group (423) is 0.15MPa～0.22MPa.

5, Pressolution electrolysis pressolution biochemical gas floating plant according to claim 3, it is characterized in that, the spherical biological filler (4200) of ball dish magnetic biological filling material or other models is made by polyethylene, polypropylene, polyvinyl chloride composite plastic, its surface has micromagnetism or has little electric charge by modifying plastics.

6, according to the described Pressolution electrolysis pressolution biochemical gas floating plant of claim 1, it is characterized in that the dissolved gas releaser (424) in the first electrolysis capture area (412) neutralization, the second electrolysis capture area (414) is power generating type dissolved gas releaser or simple type dissolved gas releaser.

7, Pressolution electrolysis pressolution biochemical gas floating plant according to claim 1 is characterized in that, dissolved gas releaser (424) is installed in 100mm ± 50mm place at the bottom of the pond, bottom of the first electrolysis capture area (412) and the second electrolysis capture area (414).

8, according to the described Pressolution electrolysis pressolution biochemical gas floating plant of claim 1, it is characterized in that, when dissolved gas releaser (424) is the power generating type dissolved gas releaser, exchanging input cable (455) is connected with the output cable of power generating type dissolved gas releaser device (424), when dissolved gas releaser (424) is the simple type dissolved gas releaser, exchanges input cable (455) and be connected by plug-in strip, contactor match appliance with industrial power in the electrical control system.