Summary of the invention
Minerals sand circulation high speed pellets pool process is promoted by negative pressure the purpose of the present invention is to provide a kind of, can be solved
The certainly low problem of sedimentation basin settling efficiency.
To achieve the above object, the technical solution adopted in the present invention is as follows:
A kind of to promote minerals sand circulation high speed pellets pool process by negative pressure, which is that high speed pellets pond is utilized to carry out
Sewage treatment is realized the high speed pellets of dirty impurities in water in treatment process using minerals sand, is mentioned by compressed air with negative pressure
The mode risen separates the silt particle after precipitating, and minerals sand recycles in sewage disposal process;The high speed pellets Chi Bao
Include coagulation area, flocculation plus sand area, water distribution uniformity area, the taper bucket tube settling district and aeration denitrogenation exhalant region, in which:
Coagulation area: coagulant mixes in coagulation area with the suspended particle in sewage and forms small wadding under agitation
Body;The coagulation area includes cylinder-shaped or rectangle pond body I, and pond body I is equipped with water inlet line, and the water inlet of water inlet line is equipped with
Coagulant chemical feed pipe;
Flocculation plus sand area: the flocculant and minerals that the small wadding body that coagulation area is formed enters flocculation plus sand Qu Houyu is added
Sand mixing, small wadding body form big wadding body as core using the minerals sand added;The flocculation plus sand area include rectangle pond body
II, vertical guide shell and sand washer, the vertical guide shell are set in rectangle pond body II, and setting mixes slowly in vertical guide shell
Machine;The sand washer is set to the top of rectangle pond body II, and for cleaning minerals sand, the top of the rectangle pond body II is additionally provided with
Flocculant chemical feed pipe and minerals sand add mouth, are respectively used to that flocculant and minerals sand is added to flocculation plus sand area;
Water distribution uniformity area: the mixed material in flocculation plus sand area enters water distribution uniformity area and evenly distributes;The water distribution uniformity area
It is the plane mesh structure arranged and formed that is interconnected by multiple water distributors in rectangle pond body III;
The taper bucket tube settling district: including inclined tube, settling zone and negative pressure lifting device, the settling zone is by multiple the taper buckets
Uniformly arrangement is formed in the horizontal direction, and settling zone is located at the lower section in the water distribution uniformity area, and the inclined tube is located at described uniform
The top of the top of water distribution area, inclined tube is equipped with catch basin;The negative pressure lifting device includes multiple vertical sewage pipes, each blowdown
The lower end of pipe is protruded into a taper bucket;The mixed material in water distribution uniformity area is flowed upward to the process of catch basin by inclined plate bottom
In, particle and wadding body in mixed material are deposited on the surface of inclined plate and glide under the effect of gravity, and deposit to the taper bucket
It is interior;
Aeration denitrogenation exhalant region: porous tubular aerator is set between inclined tube upper end and catch basin, is blasted by air blower
Gas realizes dosing or aeration into water body, to promote the conversion of Water, reaches the removal of part nitrogen;After denitrogenation processing
Water collected and discharged by catch basin.
In the coagulation area, pipe-line mixer is arranged in the water inlet of water inlet line, and water inlet line is equipped with Electromagnetic Flow
It counts, is additionally provided with flash mixer in pond body I.
In the flocculation plus sand area, the slow stirrer is controlled using close-loop control mode according to water and change of water quality
It is stirred with 40~90r/min revolving speed and promotes sewage in vertical guide shell, follow the sewage inside and outside guide shell
Circulation is moved to reach and more fully be mixed, and increases sewage in the residence time in flocculation plus sand area.
The inlet of the sand washer is equipped with hydrocyclone, is equipped with sodium hypochlorite dosing at sand washer sand export
Pipe;The minerals sand isolated through hydrocyclone enters in sand washer, and the minerals sand after sand washer cleans is by washing
Screw conveyor in sand machine is promoted to sand washer outlet, and in sand washer exit, sodium hypochlorite medicament is with spray pattern and mineral
Matter sand is sufficiently mixed and will put into flocculation plus sand area after the oxidation of minerals sand, and washed-out sand waste water can drain into coagulation area.
It is connected between the rectangle pond body I in the high speed pellets pond and rectangle pond body II by foot passage I, rectangle pond body
It is separated between II and rectangle pond body III by baffle, is provided with channel II in the middle part of baffle;One end of the foot passage I is set to rectangle form pool
The bottom of body I, the other end are set to the bottom of rectangle pond body II and are located at the underface of the guide shell;In the flocculation plus sand area
Mixed material through channel II enter water distribution uniformity area when, mixed material first flow up reach channel II, flow to still further below
Up to water distribution uniformity area.
The negative pressure lifting device includes multiple vertical sewage pipes, silt pipe and compressed air hose, in which: each vertical row
The upper end of dirty pipe is connected with the silt particle pipe, and the side wall middle and upper part of each vertical sewage pipe passes through a branch pipe and is connected to
Compressed air hose;The silt particle pipe is connected with the feed inlet of the hydrocyclone, the top of hydrocyclone
Equipped with sludge pipe, for the pug after separating to be discharged, feed inlet is located at the side wall upper part of hydrocyclone, and sand export is located at
The end of the bottom of hydrocyclone, sand export is protruded into sand washer.
In the taper bucket tube settling district, compressed air hose connects air compressor machine;Inclined tube height is 1.2m, inclined tube and level
Angular separation is 60 °, and the design of inclined plate height and tilt angle forms the continuous process scraped certainly, be accumulated in wadding body will not
On inclined tube.
In the present invention minerals sand used be by quartz sand, manganese sand and iron powder according to the weight ratio mixing of 5:2:1 and
At.
High speed pellets pool process of the present invention for city domestic sewage processing, Industrial Wastewater Treatment, river sewage improvement and
The precipitation process stage in the water harnessings such as sludge handling, waterworks or landfill leachate field.
When carrying out sewage treatment using high speed pellets pool process of the present invention, water in tube settling district is changed according to influent quality
Upflow velocity can reach 30~50m/h.
High speed pellets pool process of the present invention can be used for city domestic sewage processing, Industrial Wastewater Treatment, river sewage improvement
And the precipitation process stage in the water harnessings such as sludge handling, waterworks or landfill leachate field.
The advantages of the present invention are as follows:
1, high speed pellets pool process of the present invention uses minerals sand compressed air in a manner of negative pressure promotion, by taper
The substances such as glar, sand in the settling zone precipitation bucket that struggles against are promoted, and are separated silt particle using the kinetic energy of compressed air, are recycled
Minerals sand, sand particles object puts into flocculation zone or coagulation area in addition flocculant (PAM) again after being uniformly distributed, to warp
Sewage after crossing coagulating is trapped and is loaded the load load-bearing of sludge, keeps sludge and minerals sand heavy in the taper bucket
Shallow lake area and inclined tube settling section high speed pellets, then promoted and separated with negative pressure by compressed air, reach and recycles minerals sand
Purpose.Aeration nitrogen rejection facility is set to reach the removal of part nitrogen in water outlet.
2, high speed pellets pool process main function of the present invention is ss suspended solid, the total phosphorus TP removed in sewage, for chemistry
The removal of the indexs such as oxygen demand COD, total nitrogen TN, ammonia nitrogen NH3-N also has certain positive effect.Pass through PLC automation control
With the real-time detection of in-line meter, system can transported according to amount of inlet water, polluter adjust automatically operation data and dosage
The unattended of overall process is reached in row management.
3, present invention process solves the problems, such as that sludge settling speed is slow, treatment effeciency is low, using high speed pellets of the present invention
Pool process greatly improves the section upflow velocity of sewage, can promote the water upflow velocity of dirty tube settling district to 30
~50m/h.
4, present invention decreases land seizure areas, and reduce operation expense and construction investment and administration fee
Deng.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention can be easier to by ability
Field technique personnel understanding, so as to make a clearer definition of the protection scope of the present invention.
Referring to Fig. 1, the present invention is to promote minerals sand by negative pressure to recycle high speed pellets pool process, the high speed pellets pond
Technique solves that sludge settling speed is slow, treatment effeciency is low, operation expense is high, take up a large area, investment cost is high asks
Topic.
High speed pellets pool process of the present invention with minerals sand compressed air by negative pressure promoted circulation in a manner of, by taper
The substances such as glar, sand in the settling zone precipitation bucket that struggles against are promoted, and are separated silt particle using the kinetic energy of compressed air, sand particles
Object puts into flocculation zone or coagulation area in addition flocculant (PAM) again after being uniformly distributed, to the dirt after coagulating
Water is trapped and is loaded the load load-bearing of sludge, enables sludge and minerals sand in the taper bucket settling zone and inclined tube settling section
High speed pellets, then achieve the purpose that recycle minerals sand with the separation of negative pressure hoisting way by compressed air.It is set in water outlet
Aeration nitrogen rejection facility is set to reach the removal of part nitrogen.
High speed pellets pool process of the present invention uses the sedimentation basin of specific structure, and structure is as shown in figures 2-6.The sedimentation basin packet
Include coagulation area 100, flocculation plus sand area 200, water distribution uniformity area 300, the taper bucket tube settling district and aeration denitrogenation exhalant region 400.
1, coagulation area
Topology layout form: cylinder-shaped or rectangle pond body I 1, water inlet is arranged pipe-line mixer 101, on water inlet line
Equipped with electromagnetic flowmeter 102, flash mixer 103 is arranged in pond body top, and water inlet, which can be expanded, adds activated charcoal adding apparatus 1
Set, water inlet are additionally provided with coagulant chemical feed pipe.
Major process unit: pipe-line mixer 1, electromagnetic flowmeter 1, quick mixer 1 (frequency-variable closed control),
1 set of 1 tunnel of coagulant chemical feed pipe, activated charcoal adding apparatus.
Technology controlling and process principle:
Treatment sewage enters coagulation area by water inlet, passes through coagulant chemical feed pipe dosing coagulant (in Fig. 2 in water inlet
PAC), after sewage is mixed with coagulant by pipe-line mixer enter coagulation area, flash mixer by frequency control according to
Water, change of water quality use close-loop control mode quickly to mix under the action of 90~120r/min with suspended matter in sewage, lead to
The negative electrical charge for crossing neutralization particle surface makes particle " de- steady ", forms small wadding body and then passes through the entrance of I foot passage I 104 of pond body
The guide shell 201 in flocculation plus sand area.Phosphorus in raw water and coagulant reaction simultaneously form phosphate and reach to arrive chemical dephosphorization
Purpose.
2, flocculation plus sand area
Topology layout form: rectangle pond body II 1, vertical guide shell 201 is installed in inside, is arranged at a slow speed in vertical guide shell
Sand washer 5 is arranged in blender 202, II top of pond body, and hydrocyclone 6, outlet setting hypochlorous acid is arranged in sand washer entrance
Sodium chemical feed pipe 7, II top of pond body are additionally provided with flocculant chemical feed pipe.
Major process unit: mix slowly 1, machine (frequency-variable closed control), hydrocyclone 1, sand washer 1,
Liquid-level switch 1,1 tunnel of flocculant (PAM) chemical feed pipe, 1 tunnel of sodium hypochlorite chemical feed pipe, 1 tunnel of sludge pipe.
Technology controlling and process principle:
The micro- sand of circulation minerals promoted by negative pressure is in the hydrocyclone of sand washer inlet by pressing
It is sprayed under the power of contracting air, keeps silt floc sedimentation broken, separate silt under the action of hydraulic cyclone centrifugal force, specific gravity is lighter
Muddy water sludge-tank concentration is flowed out to by the sludge pipe 8 on cyclone top, heavier chiltern particle is in cyclonic action lower edge
Cyclone sinks and exports to sand washer, and the sand after sand washer cleans is promoted to sand washer exit by screw conveyor,
Flocculation zone is put into after hypochlorite oxidation, washed-out sand waste water drains into coagulation area.
The circulation micro- sand of minerals is mainly made of manganese, iron, quartz sand etc..Because containing irony ingredient, in sand washer sand export
Sodium hypochlorite chemical feed pipe 7 is set, merges sodium hypochlorite medicament sufficiently with minerals sand with spray pattern, and make ferric iron in alkali
Property under the conditions of and liquor natrii hypochloritis react and generate high-speed rail acid group, high-speed rail acid group has very strong oxidisability, therefore can pass through oxygen
Change effect carries out disinfection.Simultaneously as the reduzate after reaction is iron hydroxide, the property with colloid can be adsorbed
Suspended matter in water can more easily be assembled formation precipitating, can reach in conjunction with PAM and efficiently remove by the suspended impurity in water
Go the purpose of the fine suspended matter in water.
Coagulation formed small wadding body mixed in flocculation zone with flocculant PAM, slow stirrer pass through frequency control according to
Water, change of water quality are used close-loop control mode to be stirred with the effect of 40~90r/min and carried out in vertical guide shell
It is promoted, the sewage for keeping guide shell inside and outside more fully mixing circulation, and increases sewage in the residence time in flocculation plus sand area, made
Form that density is bigger, heavier wadding body using the micro- sand of minerals as core, be more advantageous in the taper bucket in sedimentation basin quickly
Precipitating.Mixed material in flocculation zone enters water distribution uniformity area 300 by channel II 203.
3, water distribution uniformity area
Topology layout form: the plane net that the interconnected arrangement of multiple water distributors (circular tube shaped and/or rectangular duct) is formed
Shape structure.Water distribution uniformity differentiation is distributed between each the taper bucket of the taper bucket tube settling district and inclined tube, in each the taper bucket
Top is uniformly dispersed downwards water distribution, is connected between each water distributor by welding manner;The size of water distributor bore is according to water inlet
Size is measured, is calculated according to 0.5 meter of standard pipe pressure current of highest head pressure.The water inlet in water distribution uniformity area is channel
II 203, it is lower to flowing into water.
The water distribution uniformity area is set in pond body III, in pond body III, according to a variety of zoning's forms of functional stratification: bottom
Multiple the taper buckets 9 are arranged, arrangement is water distribution uniformity area 300, inclined tube 15, aeration denitrogenation exhalant region 400 upwards in turn.
According to different processing water criterion calculation waterpower curve cloth Water l oads, ensureing has 0.5 meter of head so that each heavy
Shallow lake area water distribution is uniform, and flocculant promotes the small wadding body entered to be formed more by absorption, electrically neutralization and mutual bridging action
Big wadding body, the effect for extending water (flow) direction and water distribution uniformity had not only enable medicament and wadding body be sufficiently mixed but also will not destroy shape
At big flocculating body, bottom deposit sludge will not be disturbed, to make sludgd deposition more evenly.
4, the taper bucket tube settling district
Topology layout form: including inclined tube 15, settling zone and negative pressure lifting device, inclined tube is located at the upper of water distribution uniformity area
The top of side, inclined tube 15 is equipped with catch basin 14;Settling zone is formed in bottom by multiple 9 horizontal arrangements of the taper bucket;The negative pressure mentions
Rising device includes multiple vertical risers 10, silt particle pipe 11 and compressed air hose 12, and compressed air hose 12 is adjusted equipped with pressure
Valve 20;The lower end of each vertical riser 10 is protruded into a taper bucket, the mixed material in water distribution uniformity area from inclined tube bottom to
During flowing upwardly to catch basin 14, particle and wadding body in mixed material are deposited on the surface of inclined plate and under the effect of gravity
It glides, and deposits to the taper bucket.The upper end of each vertical sewage pipe is connected with the silt particle pipe 11, each vertical blowdown
The side wall middle and upper part of pipe passes through a branch pipe and is connected to compressed air hose 12, and compressed air hose connects air compressor machine 13;The mud
Sandpipe 11 is connected with the feed inlet of the hydrocyclone 6, and the top of hydrocyclone 6 is equipped with sludge pipe 8, uses
Pug after discharge separation, feed inlet are located at the side wall upper part of hydrocyclone, and sand export is located at hydrocyclone separation technology
The bottom of device, the end of sand export are protruded into sand washer 5.
Sludge interface instrument 18 is set at 0.2 meter of water distribution uniformity area top, and it is online that SS is arranged in catch basin bottom level position
Monitor 19.
Major process unit: 1 set of inclined tube, 1 set of negative pressure lifting device, air compressor machine 1,1, sludge interface instrument, SS are supervised online
Survey instrument 1,1 set of air control unit, 1 set of PLC robot control system(RCS), liquid-level switch 1.
Technology controlling and process principle:
Uniform water distribution enters the inclined tube bottom of sedimentation basin and then upward flow to top gathering ground, particle and wadding body is deposited in
It glides on the surface of inclined tube and under the effect of gravity.With the inclined tube height and 60 ° of inclinations of the upflow velocity of 30~50m/h and 1.2m
The continuous process scraped certainly can be formed, be accumulated in wadding body will not on inclined tube.Sludge containing sand quickly exists under the effect of gravity
The silt for being deposited on bottom is promoted to hydraulic cyclone device in a manner of negative pressure promotion compressed air by deposition in the taper bucket
Carry out silt particle separation.
5, it is aerated denitrogenation exhalant region
Topology layout form: being arranged porous tubular aerator 401 between inclined tube top and catch basin, logical using air blower
It crosses air hose 402 and inputs compressed air to porous tubular aerator 401.
Major process unit: 1 set of air blower 1, porous tubular aerator and air pipe line, 1 set of catch basin of water outlet.
Technology controlling and process principle:
Organic matter conversion during coagulating in sewage can cause ammonia nitrogen to increase, by using dosing or the side of aeration
Formula promotes the conversion of nitrogen, reaches the removal of part nitrogen.Water after precipitating is catchmented by being distributed in the stainless steel at the top of inclined-plate clarifying basin
Slot 14 is collected, and is discharged through exhalant region 16.
6, robot control system(RCS) control principle: PLC robot control system(RCS) starts coagulant dosing pump according to flow switch feedback signal;
Postpone 5 minutes starting coagulation area quick mixers, flocculant PAM dosing pumps;Flocculation zone water level starts flocculation zone after reaching requirement
Mix slowly machine;Settling zone water level, which reaches, to be successively spaced 30 seconds starting sand washers, negative-pressure cyclic device, sodium hypochlorite after requirement and adds
Teat pipette;After water inlet 30 minutes, PLC robot control system(RCS) acquires sludge interface instrument and SS in-line analyzer signal, process and flow of inlet water
Count setting value logical operation, control Pneumatic control cabinet tolerance, air pressure come change negative pressure promoted minerals sand internal circulating load;And it exports
4~20mA signal controls flocculation stirring machine and coagulation stirrer revolving speed;It is aerated the starting aeration denitrogenation of denitrogenation area air blower.
Activated charcoal adding apparatus requires to put into operation in due course according to laboratory data and technique.
7, the selection of minerals sand
Minerals sand includes quartz sand, manganese sand and iron powder;Partial size is between 100~150 μm;Mineral sand of the present invention
It is to be mixed by quartz sand, manganese sand and iron powder according to the weight ratio of 5:2:1.
The present invention promotes minerals sand circulation high speed pellets pool process by negative pressure and can both apply: (1) sewage treatment
Factory, waterworks mention the pretreatment section of mark transformation or the processing suspended particulate substance stage of primary reinforcement, can also apply in depth
The stages such as suspended matter, the dephosphorization of processing stage;(2) the emergency disposal center for cutting dirt, bed mud sewage of river regulation;(3) city
Trunk sewer cuts dirty emergency disposal;(4) rain sewage shuts off emergency processing;(5) landfill leachate treatment.
The present invention is by can apply the redox precipitation stage in high-concentration industrial-water again after technique extension.It should
Technique can be applied with large-scale concrete structure type in large-scale wastewater treatment plant, can also be in the form of the steel structure of modular combination
It applies in terms of emergency disposal, such as: processing that river regulation cuts dirty, city mains section dirt, rain sewage shuts off, sewage treatment plant mention mark
Transformation etc. need to be using in the engineering that primary reinforcement is handled.Application range and prospect are very wide.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.