CN210394034U - Mineral sand circulation high-speed sedimentation tank lifted by negative pressure - Google Patents
Mineral sand circulation high-speed sedimentation tank lifted by negative pressure Download PDFInfo
- Publication number
- CN210394034U CN210394034U CN201920405149.6U CN201920405149U CN210394034U CN 210394034 U CN210394034 U CN 210394034U CN 201920405149 U CN201920405149 U CN 201920405149U CN 210394034 U CN210394034 U CN 210394034U
- Authority
- CN
- China
- Prior art keywords
- sand
- area
- pipe
- mineral
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004576 sand Substances 0.000 title claims abstract description 129
- 238000004062 sedimentation Methods 0.000 title claims abstract description 70
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 53
- 239000011707 mineral Substances 0.000 title claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 125
- 239000010865 sewage Substances 0.000 claims abstract description 51
- 238000009826 distribution Methods 0.000 claims abstract description 40
- 238000005189 flocculation Methods 0.000 claims abstract description 29
- 230000016615 flocculation Effects 0.000 claims abstract description 28
- 238000005345 coagulation Methods 0.000 claims abstract description 26
- 230000015271 coagulation Effects 0.000 claims abstract description 26
- 239000000126 substance Substances 0.000 claims abstract description 18
- 238000005273 aeration Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 15
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 14
- SUKJFIGYRHOWBL-UHFFFAOYSA-N Sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 13
- 230000001112 coagulant Effects 0.000 claims description 12
- 239000000701 coagulant Substances 0.000 claims description 11
- 239000008394 flocculating agent Substances 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000005276 aerator Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 4
- 230000003311 flocculating Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000002035 prolonged Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000011068 load Methods 0.000 abstract description 6
- 125000004122 cyclic group Chemical group 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 229920002401 polyacrylamide Polymers 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000006004 Quartz sand Substances 0.000 description 4
- 230000001174 ascending Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000004886 process control Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000149 chemical water pollutant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical compound [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000249 desinfective Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 241000276438 Gadus morhua Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010042602 Supraventricular extrasystoles Diseases 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 235000019516 cod Nutrition 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- MSNWSDPPULHLDL-UHFFFAOYSA-K iron(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Fe+3] MSNWSDPPULHLDL-UHFFFAOYSA-K 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Abstract
The utility model discloses a promote high-speed sedimentation tank of mineral substance sand circulation through negative pressure belongs to water treatment technical field. The high-speed sedimentation tank comprises a coagulation area, a flocculation sand adding area, a uniform water distribution area, a conical hopper inclined tube sedimentation area and an aeration denitrification water outlet area, sewage treatment is carried out by using the high-speed sedimentation tank, high-speed sedimentation of impurities in sewage is realized by using mineral sand in the treatment process, then the sedimentated mud and sand are separated in a negative pressure lifting mode by using compressed air, and the mineral sand is recycled in the sewage treatment process. The utility model discloses select to carry out high-speed the sediment with one or more mineral substance sand mixed reaction loading, separate the silt particle with the mode that the negative pressure promoted through compressed air to cyclic utilization mineral substance sand has improved the cross-section upflow speed that sewage deposited.
Description
Technical Field
The utility model relates to a water treatment technical field, concretely relates to promote high-speed sedimentation tank of mineral substance sand circulation through negative pressure.
Background
The common domestic sedimentation tanks mainly comprise: a lateral flow sedimentation tank, a horizontal flow sedimentation tank, an inclined tube sedimentation tank, a high-efficiency sedimentation tank, a magnetized coagulating sedimentation tank, a sand-added sedimentation tank and the like. The cross-section ascending flow velocity of the pollutant precipitation of the radial flow sedimentation tank and the horizontal flow sedimentation tank by adopting a physical method is between 0.8 and 3.5m/h, the cross-section ascending flow velocity of the inclined tube sedimentation tank and the efficient sedimentation tank by adopting a physical and chemical method is between 8.3 and 14m/h, and the cross-section ascending flow velocity of the magnetized coagulation sedimentation tank is between 13 and 25 m/h.
Considering that the national environmental protection department proposes that the surface level IV-class water quality standard needs to be reached before 2020, the technical wave of environmental protection improvement will be raised nationwide in the coming years. Especially, the removal of total nitrogen and total phosphorus indexes is a huge challenge. Wherein, the removal of nitrogen cannot be separated from the biochemical process, and the removal of phosphorus cannot be separated from the precipitation process.
Meanwhile, in projects such as river treatment sewage interception, urban sewage interception main pipe, rainwater and sewage interception treatment, sewage treatment plant upgrading modification, garbage leachate treatment and the like, the high-speed sedimentation tank process is a preferred option, and the advancement of the process directly influences the working efficiency and the economic cost of the project.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a promote high-speed sedimentation tank of mineral matter sand circulation through the negative pressure, can solve the problem that sedimentation tank sedimentation efficiency is low.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a promote high-speed sedimentation tank of mineral matter sand circulation through negative pressure, includes that the district that thoughtlessly congeals, flocculation sand feeding district, even water distribution district, toper fill pipe chute settling zone and aeration denitrogenation go out the water zone, wherein:
a coagulation area: under the condition of stirring, the coagulant and suspended particles in the sewage are mixed in a coagulation area to form small flocs; the coagulation area comprises a cylindrical or rectangular tank body I, a water inlet pipeline is arranged on the tank body I, and a coagulant dosing pipe is arranged at a water inlet of the water inlet pipeline;
a flocculation sand adding area: small flocs formed in the coagulation area enter the flocculation sand adding area and then are mixed with the added flocculating agent and mineral sand, and the small flocs form large flocs by taking the added mineral sand as a core; the flocculation sand adding area comprises a rectangular tank body II, a vertical guide cylinder and a sand washer, the vertical guide cylinder is arranged in the rectangular tank body II, and a slow speed stirrer is arranged in the vertical guide cylinder; the sand washer is arranged above the rectangular tank body II and used for washing mineral sand, and a flocculating agent feeding pipe and a mineral sand feeding port are further arranged at the upper part of the rectangular tank body II and respectively used for feeding flocculating agent and mineral sand into the flocculating and sand feeding area;
a uniform water distribution area: the mixed material in the flocculation sand adding area enters the uniform water distribution area to be uniformly distributed; the uniform water distribution area is arranged in the rectangular tank body III and is a plane net structure formed by mutually communicating and arranging a plurality of water distribution pipes;
conical hopper inclined tube settling zone: the device comprises an inclined tube, a settling zone and a negative pressure lifting device, wherein the settling zone is formed by uniformly distributing a plurality of conical hoppers in the horizontal direction, the settling zone is positioned below the uniform water distribution zone, the inclined tube is positioned above the uniform water distribution zone, and a water collecting tank is arranged above the inclined tube; the negative pressure lifting device comprises a plurality of vertical sewage pipes, and the lower end of each sewage pipe extends into one conical hopper; in the process that the mixed material in the uniform water distribution area flows upwards to the water collecting tank from the bottom of the inclined plate, particles and flocs in the mixed material are deposited on the surface of the inclined plate, slide downwards under the action of gravity and are deposited in the conical hopper;
aeration denitrification water outlet area: a microporous tubular aerator is arranged between the upper end of the inclined pipe and the water collecting tank, and air is blown in by a blower to realize dosing or aeration in the water body, so that the conversion of nitrogen in the water body is promoted, and the removal of partial nitrogen is realized; the water after denitrification treatment is collected and discharged by a water collecting tank.
In the coagulation zone, a pipeline mixer is arranged at a water inlet of the water inlet pipeline, an electromagnetic flow meter is arranged on the water inlet pipeline, and a rapid stirrer is further arranged on the pool body I.
In the flocculation sand adding area, a closed-loop control mode is adopted to control the low-speed stirrer to stir at the rotating speed of 40-90 r/min according to the change of water quantity and water quality and to lift sewage in the vertical guide cylinder, so that the sewage inside and outside the guide cylinder flows circularly to achieve more sufficient mixing, and the retention time of the sewage in the flocculation sand adding area is prolonged.
A hydraulic cyclone separator is arranged at the inlet of the sand washer, and a sodium hypochlorite dosing pipe is arranged at the sand outlet of the sand washer; mineral sand separated by the hydrocyclone separator enters a sand washer, the mineral sand cleaned by the sand washer is lifted to an outlet of the sand washer by a screw conveyor in the sand washer, a sodium hypochlorite medicament is fully mixed with the mineral sand in a spraying mode at the outlet of the sand washer, the mineral sand is oxidized and then is put into a flocculation sand adding area, and sand washing wastewater can be discharged to a coagulation area.
The rectangular tank body I and the rectangular tank body II of the high-speed sedimentation tank are communicated through a bottom channel I, the rectangular tank body II and the rectangular tank body III are separated by a baffle plate, and the middle part of the baffle plate is provided with a channel II; one end of the bottom channel I is arranged at the bottom of the rectangular tank body I, and the other end of the bottom channel I is arranged at the bottom of the rectangular tank body II and is positioned right below the guide cylinder; when the mixed material in the flocculation sand adding area enters the uniform water distribution area through the channel II, the mixed material flows upwards to reach the channel II and then flows downwards to reach the uniform water distribution area.
Negative pressure hoisting device includes a plurality of vertical blow off pipe, silt pipe and compressed air pipe, wherein: the upper end of each vertical sewage discharge pipe is communicated with the silt pipe, and the middle upper part of the side wall of each vertical sewage discharge pipe is connected to a compressed air pipe through a branch pipe; the silt pipe is connected with the feed inlet of the hydrocyclone separator, the top end of the hydrocyclone separator is provided with a silt discharge pipe for discharging separated silt, the feed inlet is arranged on the upper part of the side wall of the hydrocyclone separator, the sand outlet is arranged at the bottom of the hydrocyclone separator, and the end part of the sand outlet extends into the sand washer.
In the sedimentation zone of the conical hopper inclined pipe, a compressed air pipe is connected with an air compressor; the height of the inclined tube is 1.2m, the included angle between the inclined tube and the horizontal direction is 60 degrees, and the design of the height of the inclined plate and the inclined angle forms a continuous self-scraping process, so that flocs cannot be accumulated on the inclined tube.
The mineral sand used in the utility model is formed by mixing quartz sand, manganese ore sand and iron powder according to the weight ratio of 5:2: 1.
The utility model discloses high-speed sedimentation tank technology is used for the sedimentation treatment stage in water treatment fields such as city domestic sewage treatment, industrial wastewater treatment, river course sewage treatment and bed mud treatment, water works or landfill leachate.
Adopt the utility model discloses when high-speed sedimentation tank technology carries out sewage treatment, can reach 30 ~ 50m/h according to the quality of water change pipe chute sedimentation district water rising velocity of flow of intaking.
The utility model discloses high-speed sedimentation tank technology can be used to the sedimentation treatment stage in water treatment fields such as city domestic sewage treatment, industrial wastewater treatment, river course sewage treatment and bed mud treatment, water works or landfill leachate.
The utility model has the advantages and beneficial effects as follows:
1. the utility model discloses high-speed sedimentation tank adopts the mineral substance sand to pass through the mode that compressed air promoted with the negative pressure, fight the sedimentation mud in the sedimentation zone sediment fill with the toper, material such as sand promotes, and utilize compressed air's kinetic energy to separate silt particle, cyclic utilization mineral substance sand, the sandy grain thing drops into flocculation area or coagulation area again after adding flocculating agent (PAM) through evenly distributed, carry out the load bearing of entrapment and loading mud to the sewage after the coagulation reaction, make mud and mineral substance sand fight sedimentation zone and pipe chute clarification area high-speed sediment at the toper, rethread compressed air promotes the separation with the negative pressure, reach the purpose of cyclic utilization mineral substance sand. An aeration denitrification device is arranged on the effluent to remove partial nitrogen.
2. The utility model discloses high-speed sedimentation tank main function is that suspended solid SS, total phosphorus TP in the sewage are removed, also has certain positive effect to getting rid of indexes such as chemical oxygen demand COD, total nitrogen TN, ammonia nitrogen NH 3-N.
3. The utility model discloses the problem that sludge sedimentation speed is slow, the treatment effeciency is low has been solved to technology, adopts the utility model discloses high-speed sedimentation tank, very big improvement the cross-section upwelling velocity of sewage, can promote the upwelling velocity on water of dirty pipe chute settling zone to 30 ~ 50 m/h.
4. The utility model discloses land area occupied has been reduced to operation maintenance cost and engineering investment and administrative cost etc. have been reduced.
Drawings
Fig. 1 is the utility model discloses a negative pressure promotes the high-speed sedimentation tank's of mineral sand circulation principle sketch map.
Fig. 2 is a schematic view of the overall structure of the high-speed sedimentation tank used in the present invention.
Fig. 3 is the structural schematic diagram of the middle sand washer of the present invention.
Fig. 4 is a plane layout diagram of the uniform water distribution area of the high-speed sedimentation tank of the utility model.
FIG. 5 is a plan view of the aeration denitrification effluent area of the high-speed sedimentation tank of the utility model.
Fig. 6 is a layout diagram of the automatic control instrument related to the high-speed sedimentation tank of the utility model.
In the figure: 100-a coagulation zone; 101-a line mixer; 102-an electromagnetic flow meter; 103-a rapid mixer; 104-channel i; 200-flocculation sand adding area; 201-a guide shell; 202-slow mixer; 203-channel II; 300-a uniform water distribution area; 400-aeration denitrification water outlet area; 401-micro porous aerator; 402-air tubes; 5-sand washing machine; 6-hydrocyclone separator; 7-sodium hypochlorite dosing pipe; 8-a sludge pipe; 9-a conical hopper; 10-a vertical riser; 11-a silt pipe; 12-compressed air pipe; 13-air compressor (air compressor); 14-a water collecting tank; 15-inclined tube; 16-a water outlet zone; 17-a liquid level switch; 18-sludge interface instrument; 19-SS on-line analyzer; 20-pressure regulating valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making more clear and definite definitions of the protection scope of the present invention.
Referring to fig. 1, the utility model discloses a through the high-speed sedimentation tank of negative pressure promotion mineral matter sand circulation, solved sludge settling speed slow, the treatment effeciency is low, the operation maintenance cost is high, area is big, investment cost is high problem.
The utility model discloses mineral substance sand for high-speed sedimentation tank passes through compressed air and promotes endless mode with the negative pressure, fight the toper and deposit sediment mud in the sedimentation zone is fought, material such as sand promotes, and utilize compressed air's kinetic energy to separate silt particle, the sandy matter particulate matter drops into flocculation area or coagulation area again after adding flocculating agent (PAM) through evenly distributed, carry out the load bearing of entrapment and loading mud to the sewage after the coagulation reaction, make mud and mineral substance sand fight sedimentation zone and pipe chute clarification district high-speed sediment at the toper, rethread compressed air promotes the mode separation with the negative pressure, reach the purpose of cyclic utilization mineral substance sand. An aeration denitrification device is arranged on the effluent to remove partial nitrogen.
The structure of the high-speed sedimentation tank of the utility model is shown in figures 2-6. The sedimentation tank comprises a coagulation area 100, a flocculation sand adding area 200, an even water distribution area 300, a conical hopper inclined tube sedimentation area and an aeration denitrification water outlet area 400.
1. Coagulation zone
The structure layout form is as follows: a cylindrical or rectangular tank body I1 is provided with a water inlet provided with a pipeline mixer 101, an electromagnetic flow meter 102 is arranged on a water inlet pipeline, a rapid stirrer 103 is arranged on the upper part of the tank body, the water inlet can be expanded to be additionally provided with 1 set of activated carbon adding device, and the water inlet is also provided with a coagulant adding pipe.
The main process equipment comprises the following steps: 1 pipeline mixer, 1 electromagnetic flowmeter, 1 rapid stirrer (frequency conversion closed-loop control), 1 coagulant dosing pipe and 1 activated carbon dosing device.
The process control principle is as follows:
sewage to be treated enters a coagulation area from a water inlet, a coagulant (PAC in figure 2) is added into the water inlet through a coagulant adding pipe, the sewage and the coagulant enter the coagulation area after being mixed through a pipeline mixer, the sewage and the coagulant are quickly mixed with suspended matters in the sewage under the action of 90-120 r/min by a quick mixer through frequency conversion speed regulation according to the change of water quantity and water quality in a closed-loop control mode, particles are destabilized by neutralizing negative charges on the surfaces of the particles to form small flocs, and then the small flocs enter a guide cylinder 201 of a flocculation sand adding area through a channel I104 at the bottom of a tank body I. Meanwhile, phosphorus in the raw water reacts with a coagulant to form phosphate, so that the aim of chemical phosphorus removal is fulfilled.
2. Flocculation sand adding area
The structure layout form is as follows: II 1 seats of rectangle cell body, inside vertical draft tube 201 of installing sets up slow mixer 202 in the vertical draft tube, and II upper portions of cell body set up sand washer 5, and the sand washer entry sets up hydraulic cyclone 6, and the export sets up sodium hypochlorite dosing pipe 7, and II upper portions of cell body still are equipped with the flocculating agent dosing pipe.
The main process equipment comprises the following steps: 1 slow mixer (frequency conversion closed-loop control), 1 hydrocyclone separator, 1 sand washer, 1 liquid level switch, 1 flocculant (PAM) dosing pipe, 1 sodium hypochlorite dosing pipe and 1 sludge pipe.
The process control principle is as follows:
the circulating mineral substance micro sand lifted by negative pressure is ejected under the power of compressed air in a hydraulic cyclone separator at the inlet of the sand washer to break silt flocs, the silt is separated under the action of hydraulic cyclone centrifugal force, mud water with lighter specific gravity flows out of a sludge pipe 8 at the upper part of the cyclone to be concentrated in a sludge pool, heavier sandy particles sink along the cyclone under the action of cyclone and are output to the sand washer, the sand cleaned by the sand washer is lifted to the outlet of the sand washer by a screw conveyor, and is put into a flocculation area after being oxidized by sodium hypochlorite, and the sand washing wastewater is discharged to a coagulation area.
The circulating mineral substance micro-sand mainly comprises manganese, iron, quartz sand and the like. Because the sodium hypochlorite disinfectant contains iron components, the sodium hypochlorite dosing pipe 7 is arranged at the sand outlet of the sand washer, the sodium hypochlorite reagent and mineral sand are fully fused in a spraying mode, ferric iron reacts with a sodium hypochlorite solution under an alkaline condition to generate ferrate radicals, and the ferrate radicals have strong oxidizability, so that the ferric sodium hypochlorite disinfectant can be disinfected through oxidation. Meanwhile, the reduction product after the reaction is ferric hydroxide, has the property of colloid, can adsorb suspended impurities in water, can aggregate suspended matters in water more easily to form precipitate, and can achieve the purpose of efficiently removing fine suspended matters in water by combining with PAM.
The little flocculating constituent that the coagulation formed mixes with flocculating agent PAM in the flocculation district, pass through variable frequency speed governing at the low speed agitator according to the water yield, the water quality change adopts the closed loop control mode to stir and promote in vertical draft tube with 40 ~ 90 r/min's effect, make inside and outside sewage more abundant mixed cycle of draft tube, and increase sewage dwell time in flocculation sand feeding district, it is bigger, heavier flocculating constituent to make it form density with the mineral matter trace sand as the core, more be favorable to depositing fast in the toper fill in the sedimentation tank. The mixed material in the flocculation zone enters the uniform water distribution zone 300 through a channel II 203.
3. Uniform water distribution area
The structure layout form is as follows: a plurality of water distribution pipes (round pipe-shaped and/or rectangular pipes) are communicated with each other to form a plane net structure. The uniform water distribution area is distributed between each conical hopper and each inclined pipe of the inclined pipe settling area of the conical hopper, uniform water distribution is downwards dispersed above each conical hopper, and the water distribution pipes are connected in a welding mode; the size of the aperture of the water distribution pipe is calculated according to the size of water inflow and the highest head pressure of 0.5 meter of standard pipeline pressure flow. The water inlet of the uniform water distribution area is a channel II 203, and water flows downwards.
The uniform water distribution area is arranged in the pool body III, and the pool body III is arranged in various partition layout forms according to function layering: the bottom is provided with a plurality of conical hoppers 9 which are sequentially arranged upwards to form a uniform water distribution area 300, an inclined pipe 15 and an aeration denitrification water outlet area 400.
The water distribution load of a hydraulic curve is calculated according to different water treatment quantity standards, a water head of 0.5 meter is guaranteed to enable water distribution of each settling zone to be uniform, the flocculating agent enables entering small flocs to form larger flocs through adsorption, electric neutralization and mutual bridging, the water flow direction is prolonged, the water distribution is uniform, and the effect of fully mixing the medicament and the flocs can not damage the formed large flocs and disturb bottom deposited sludge, so that sludge deposition is more uniform.
4. Conical hopper inclined tube settling zone
The structure layout form is as follows: the device comprises an inclined pipe 15, a settling zone and a negative pressure lifting device, wherein the inclined pipe is positioned above the uniform water distribution zone, and a water collecting tank 14 is arranged above the inclined pipe 15; the sedimentation zone is arranged at the bottom and is formed by horizontally arranging a plurality of conical hoppers 9; the negative pressure lifting device comprises a plurality of vertical lifting pipes 10, a sand pipe 11 and a compressed air pipe 12, and a pressure regulating valve 20 is arranged on the compressed air pipe 12; the lower end of each vertical lifting pipe 10 extends into a conical hopper, and in the process that the mixed materials in the uniform water distribution area flow upwards to the water collecting tank 14 from the bottom of the inclined pipe, particles and flocs in the mixed materials are deposited on the surface of the inclined plate and slide downwards under the action of gravity and are deposited into the conical hopper. The upper end of each vertical sewage discharge pipe is communicated with the silt pipe 11, the middle upper part of the side wall of each vertical sewage discharge pipe is connected to a compressed air pipe 12 through a branch pipe, and the compressed air pipe is connected with an air compressor 13; the silt pipe 11 with hydrocyclone 6's feed inlet is connected, and hydrocyclone 6's top is equipped with mud pipe 8 for the mud material after the discharge separation, and the feed inlet is established on hydrocyclone's lateral wall upper portion, and the sand outlet is established in hydrocyclone's bottom, and the tip of sand outlet stretches into in the sand washer 5.
A sludge interface instrument 18 is arranged at the upper part of the uniform water distribution area by 0.2 meter, and an SS on-line monitor 19 is arranged at the height position of the bottom of the water collecting tank.
The main process equipment comprises the following steps: the system comprises 1 set of inclined pipes, 1 set of negative pressure lifting device, 1 set of air compressor, 1 set of sludge interface instrument, 1 set of SS on-line monitoring instrument, 1 set of pneumatic control device, 1 set of PLC automatic control system and 1 set of liquid level switch.
The process control principle is as follows:
the uniform water distribution enters the bottom of an inclined pipe of the sedimentation tank and then flows upwards to an upper water collecting area, and particles and flocs are precipitated on the surface of the inclined pipe and slide downwards under the action of gravity. A continuous self-scraping process can be formed by the ascending flow speed of 30-50 m/h, the height of the inclined tube of 1.2m and the inclination of 60 degrees, so that flocs cannot be accumulated on the inclined tube. The sand-containing sludge is rapidly deposited in the conical hopper under the action of gravity, and the sediment deposited at the bottom is lifted to the hydraulic cyclone device for sludge-sand separation in a negative pressure lifting mode through compressed air.
5. Aeration denitrification water outlet area
The structure layout form is as follows: a microporous tube aerator 401 is provided between the upper part of the inclined tube and the water collection tank, and compressed air is supplied to the microporous tube aerator 401 through an air pipe 402 by a blower.
The main process equipment comprises the following steps: 1 set of blower, 1 set of microporous tubular aerator and air pipeline, 1 set of effluent water collecting tank.
The process control principle is as follows:
the conversion of organic matters in the sewage in the coagulation reaction process can cause the increase of ammonia nitrogen, and the conversion of nitrogen is promoted by adopting a medicine adding or aeration mode to remove partial nitrogen. The precipitated water is collected by stainless steel collection troughs 14 distributed at the top of the inclined plate sedimentation tank and discharged through a water outlet zone 16.
6. The control principle of the automatic control system is as follows: the PLC automatic control system starts a coagulant adding pump according to a feedback signal of the flow switch; starting a rapid mixer and a flocculating agent PAM dosing pump in the coagulation area after delaying for 5 minutes; starting a flocculation area slow speed stirrer after the water level of the flocculation area meets the requirement; after the water level of the sedimentation area reaches the requirement, starting a sand washer, a negative pressure circulating device and a sodium hypochlorite dosing pump at intervals of 30 seconds in sequence; after 30 minutes of water inflow, the PLC automatic control system collects signals of a sludge interface instrument and an SS on-line analyzer, and controls the air quantity and the air pressure of the pneumatic control cabinet to change the circulation quantity of the mineral sand under negative pressure through logical operation with the set value of the inflow water flowmeter; and outputting 4-20 mA signals to control the rotating speed of the flocculation stirrer and the coagulation stirrer; and the aeration denitrification area blower starts aeration denitrification.
And the activated carbon adding device is put into operation at proper time according to laboratory data and process requirements.
7. Selection of mineral sands
The mineral sand comprises quartz sand, manganese ore sand and iron powder; the particle size is 100-150 μm; the utility model discloses medium mineral sand is mixed by quartz sand, manganese ore sand and iron powder according to the weight ratio of 5:2: 1.
The utility model discloses a negative pressure promotes high-speed sedimentation tank technology of mineral substance sand circulation both can use: (1) the pretreatment section of upgrading and transforming of sewage treatment plants and water supply plants or the stage of treating suspended particles by primary strengthening can also be applied to the stages of suspended matters, phosphorus removal and the like in the advanced treatment stage; (2) an emergency disposal center for intercepting sewage and bottom mud sewage in river treatment; (3) emergency disposal of sewage interception of the municipal sewage main pipe; (4) intercepting rain sewage for emergency treatment; (5) and (4) treating the landfill leachate.
The utility model can be applied to the oxidation-reduction precipitation stage of high-concentration industrial wastewater after the technology is expanded. The process can be applied to a large sewage treatment plant in a large concrete structure form, and can also be applied to the aspect of emergency disposal in a modular combined steel structure form, such as: the method is applied to projects which need primary strengthening treatment, such as river treatment and sewage interception, urban main pipe sewage interception, rainwater and sewage interception treatment, sewage treatment plant upgrading and modification, and the like. Has wide application range and prospect.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a promote high-speed sedimentation tank of mineral substance sand circulation through negative pressure which characterized in that: the high-speed sedimentation tank comprises a coagulation area, a flocculation sand adding area, an even water distribution area, a conical hopper inclined tube sedimentation area and an aeration denitrification water outlet area, wherein:
a coagulation area: the device comprises a cylindrical or rectangular tank body I, wherein a water inlet pipeline is arranged on the tank body I, and a coagulant dosing pipe is arranged at a water inlet of the water inlet pipeline;
a flocculation sand adding area: the device comprises a rectangular tank body II, a vertical guide cylinder and a sand washer, wherein the vertical guide cylinder is arranged in the rectangular tank body II, and a slow stirrer is arranged in the vertical guide cylinder; the sand washer is arranged above the rectangular tank body II and used for washing mineral sand, and a flocculating agent feeding pipe and a mineral sand feeding port are further arranged at the upper part of the rectangular tank body II and respectively used for feeding flocculating agent and mineral sand into the flocculating and sand feeding area;
a uniform water distribution area: the uniform water distribution area is arranged in the rectangular tank body III and is a plane net structure formed by mutually communicating and arranging a plurality of water distribution pipes;
conical hopper inclined tube settling zone: the device comprises an inclined tube, a settling zone and a negative pressure lifting device, wherein the settling zone is formed by uniformly distributing a plurality of conical hoppers in the horizontal direction, the settling zone is positioned below the uniform water distribution zone, the inclined tube is positioned above the uniform water distribution zone, and a water collecting tank is arranged above the inclined tube; the negative pressure lifting device comprises a plurality of vertical sewage pipes, and the lower end of each sewage pipe extends into one conical hopper; in the process that the mixed material in the uniform water distribution area flows upwards to the water collecting tank from the bottom of the inclined plate, particles and flocs in the mixed material are deposited on the surface of the inclined plate, slide downwards under the action of gravity and are deposited in the conical hopper;
aeration denitrification water outlet area: a microporous tubular aerator is arranged between the upper end of the inclined pipe and the water collecting tank, and air is blown in by a blower to realize dosing or aeration in the water body, so that the conversion of nitrogen in the water body is promoted, and the removal of partial nitrogen is realized; the water after denitrification treatment is collected and discharged by a water collecting tank.
2. The mineral sand circulating high-speed sedimentation tank according to claim 1, wherein: in the coagulation zone, a pipeline mixer is arranged at a water inlet of the water inlet pipeline, an electromagnetic flow meter is arranged on the water inlet pipeline, and a rapid stirrer is further arranged on the pool body I.
3. The mineral sand circulating high-speed sedimentation tank according to claim 1, wherein: in the flocculation sand adding area, a closed-loop control mode is adopted to control the low-speed stirrer to stir at the rotating speed of 40-90 r/min according to the change of water quantity and water quality, so that the sewage inside and outside the guide cylinder flows circularly to achieve more sufficient mixing, and the retention time of the sewage in the flocculation sand adding area is prolonged.
4. The mineral sand circulating high-speed sedimentation tank according to claim 1, wherein: a hydraulic cyclone separator is arranged at the inlet of the sand washer, and a sodium hypochlorite dosing pipe is arranged at the sand outlet of the sand washer; mineral sand separated by the hydrocyclone separator enters a sand washer, the mineral sand cleaned by the sand washer is lifted to an outlet of the sand washer by a screw conveyor in the sand washer, a sodium hypochlorite medicament is fully mixed with the mineral sand in a spraying mode at the outlet of the sand washer, the mixture is put into a flocculation sand adding area after the mineral sand is oxidized, and sand washing wastewater is discharged to a coagulation area.
5. The mineral sand circulating high-speed sedimentation tank according to claim 1, wherein: the rectangular tank body I and the rectangular tank body II of the high-speed sedimentation tank are communicated through a bottom channel I, the rectangular tank body II and the rectangular tank body III are separated by a baffle plate, and the middle part of the baffle plate is provided with a channel II; one end of the bottom channel I is arranged at the bottom of the rectangular tank body I, and the other end of the bottom channel I is arranged at the bottom of the rectangular tank body II and is positioned right below the guide cylinder; when the mixed material in the flocculation sand adding area enters the uniform water distribution area through the channel II, the mixed material flows upwards to reach the channel II and then flows downwards to reach the uniform water distribution area.
6. The mineral sand circulating high-speed sedimentation tank according to claim 4, wherein the mineral sand circulating high-speed sedimentation tank comprises: negative pressure hoisting device includes a plurality of vertical blow off pipes, silt pipe and compressed air pipe, wherein: the upper end of each vertical sewage discharge pipe is communicated with the silt pipe, and the middle upper part of the side wall of each vertical sewage discharge pipe is connected to a compressed air pipe through a branch pipe; the silt pipe is connected with the feed inlet of the hydrocyclone separator, the top end of the hydrocyclone separator is provided with a silt discharge pipe for discharging separated silt, the feed inlet is arranged on the upper part of the side wall of the hydrocyclone separator, the sand outlet is arranged at the bottom of the hydrocyclone separator, and the end part of the sand outlet extends into the sand washer.
7. The mineral sand circulating high-speed sedimentation tank according to claim 6, wherein: in the sedimentation zone of the conical hopper inclined pipe, a compressed air pipe is connected with an air compressor; the height of the inclined tube is 1.2m, and the included angle between the inclined tube and the horizontal direction is 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920405149.6U CN210394034U (en) | 2019-03-28 | 2019-03-28 | Mineral sand circulation high-speed sedimentation tank lifted by negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920405149.6U CN210394034U (en) | 2019-03-28 | 2019-03-28 | Mineral sand circulation high-speed sedimentation tank lifted by negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210394034U true CN210394034U (en) | 2020-04-24 |
Family
ID=70336707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920405149.6U Active CN210394034U (en) | 2019-03-28 | 2019-03-28 | Mineral sand circulation high-speed sedimentation tank lifted by negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210394034U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666469A (en) * | 2021-09-09 | 2021-11-19 | 深圳市正达环境工程实业有限公司 | Sand-adding efficient sedimentation tank water treatment process and treatment reagent thereof |
-
2019
- 2019-03-28 CN CN201920405149.6U patent/CN210394034U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666469A (en) * | 2021-09-09 | 2021-11-19 | 深圳市正达环境工程实业有限公司 | Sand-adding efficient sedimentation tank water treatment process and treatment reagent thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100415338C (en) | Method and equipment for purifying recirculated cooling water or town B-grade sewage | |
| CN2931458Y (en) | Highly effective physicochemical water treatment sedimentation basin | |
| CN213803071U (en) | Flocculation reactor and sewage treatment equipment | |
| CN106348528A (en) | Sewage treatment system combining magnetic loading precipitation and biological aerated filter tank | |
| CN203866080U (en) | Circular efficient precipitating device | |
| CN201033264Y (en) | High-efficiency water clarifying processing equipment | |
| CN210394034U (en) | Mineral sand circulation high-speed sedimentation tank lifted by negative pressure | |
| CN109824186A (en) | Minerals sand, which is promoted, by negative pressure recycles high speed pellets pool process | |
| CN208814853U (en) | Quick black smelly water treatment system of the biochemistry pool in conjunction with efficient sedimentation tank | |
| CN208087256U (en) | A kind of efficient high tower air floatation machine | |
| CN109179898A (en) | A kind of resin lens production wastewater treatment device | |
| CN105129992B (en) | Transverse-spiral-flow type domestic sewage purifying device | |
| CN201999778U (en) | Single-layer pressure integration oil eliminator | |
| CN212127795U (en) | Terminal is handled in building engineering waste water integration | |
| CN210480952U (en) | High turbidity construction sewage treatment plant | |
| CN110422953B (en) | Microwave normal temperature wet oxidation wastewater advanced treatment method | |
| CN111153558A (en) | Garbage transfer station leachate treatment device and treatment method thereof | |
| CN105461118A (en) | Coal mine sewage treating and recycling technology | |
| KR101045878B1 (en) | High-efficiency hybrid sedimentation basin for processing water elevation | |
| CN201890788U (en) | Double-layered pressure type oil remover | |
| CN110228912A (en) | The source separation removal device of the Phosphorus pollutant of municipal wastewater treatment plant thickened sludge water | |
| CN101560024B (en) | Sewage treatment technology and equipment thereof | |
| CN103641259A (en) | Desulfurization wastewater treatment device | |
| CN211999336U (en) | Leachate treatment device for garbage transfer station | |
| CN212246534U (en) | Mine water purification treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |