CN106882903A - A kind of steel chlorohydric acid pickling sewage pretreatment device and method - Google Patents
A kind of steel chlorohydric acid pickling sewage pretreatment device and method Download PDFInfo
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- CN106882903A CN106882903A CN201710139640.4A CN201710139640A CN106882903A CN 106882903 A CN106882903 A CN 106882903A CN 201710139640 A CN201710139640 A CN 201710139640A CN 106882903 A CN106882903 A CN 106882903A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention relates to a kind of steel chlorohydric acid pickling sewage pretreatment device and method, device includes rotary solar water heater, negative pressure evaporation pond, condensation reservoir, gas absorption cell, oxidization and sedimentation basin and multilayer filter tower；Rotary solar water heater includes base, hot-water line, heater inleting pipe, water heater outlet and water pump, negative pressure evaporation pond includes negative pressure evaporation pond water inlet pipe, negative pressure evaporation pond outlet pipe, heat exchanger, pressure controlling device and negative pressure evaporation pond escaping pipe, condensation reservoir includes steam inlet, hydrochloric acid reception tank, coolant inlet, cooling liquid outlet, steam (vapor) outlet, HCl gas absorbent is provided with gas absorption cell, oxidization and sedimentation basin includes mixed zone and settling zone, mixed zone bottom is provided with aeration plate, oxidization and sedimentation basin water distribution branch pipe is provided with above aeration plate, multilayer filter tower includes top cover, multilayer filter tower water inlet pipe, multilayer filter tower water distributor, filtrate, filtrate support frame, air inlet and multilayer filter tower outlet pipe.
Description
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of steel chlorohydric acid pickling sewage pretreatment device and side
Method.
Background technology
Acid washing rolled steel refers to before the surface treatment such as zinc-plated, strip is had clean and active surface, to ensure
The surface quality of the steel for being produced, in order to obtain such surface, it is necessary to carry out pickling processes to remove table to steel surface
The impurity such as the iron scale in face.In acid cleaning process, acid cleaner is contacted and reacted with metal surface, with hydrogen in acid solution
The reduction of ion concentration and the increase of concentration of metal ions, the pickling efficiency of acid solution are also constantly reduced, as the acid for needing outer row
Wash waste liquid.For common iron, the pickling effect of hydrochloric acid is more notable compared with sulfuric acid, and the release effect of chlorohydric acid pickling makes base iron
Loss is less, therefore hydrochloric acid is increasingly becoming the main flow cleaning agent in steel cleaning.
Containing substantial amounts of hydrogen ion and with Fe in steel hydrochloric acid pickling waste liquor2+Based on metal ion, if directly discharge will
The ecological environment of water body and soil is had a strong impact on, surrounding animals and plants are poisoned, causes soil property calcification, destruction soil layer construction；If people and animals
The larger water of drink acidity, gently then triggers enterogastritis, heavy then digestive system of burning by mistake；If taking in excessive heavy metal ion, can also make
Into people and animals' metal poisoning, serious harm finally is caused to human health.In addition, pickling waste waters because its acidity it is high, to waste water
Biological self reproducing in biological treatment system also has certain influence, can also endanger the water conservancy projects such as sewer pipe and armored concrete and construct
Thing, cause burn into destroy etc..Meanwhile, chlorohydric acid pickling waste water acidity is high, and molysite content is big, if directly discharge is also a kind of resource
Waste.
In medium-sized and small enterprises, the traditional processing mode of chlorohydric acid pickling waste water be outward transport commission treatment and add alkali in and locate
Reason.Wherein plus alkali neutralisation treatment is reacted using the acid in carbide slag or lime slaking product and pickle liquor, metal ion, generation
Fe(OH)2Precipitation, is processed both after separation of solid and liquid respectively.The technique includes the processes such as neutralization, flocculation, precipitation, filtering, treatment
Effect is general, it is necessary to add a large amount of alkali and flocculant, there is flow is tediously long, effluent quality unstable, floor space up to standard is big etc.
Problem, a large amount of body refuses dehydration of generation is difficult, therefore is gradually eliminated during practical application.And large enterprise typically uses
High-temperature roasting method, it is advantageous that the rate of recovery of regenerated acid and molysite is high, but invests huge, and equipment requirement is high, operating condition
Strictly, operation and maintenance cost are also high, and this large-scale promotion to the technique has been limited.
The content of the invention
The technical problem to be solved in the present invention is：In order to solve the problem in above-mentioned steel chlorohydric acid pickling wastewater treatment, this
Invention provides a kind of steel chlorohydric acid pickling sewage pretreatment device and method.
The technical solution adopted for the present invention to solve the technical problems is：A kind of steel chlorohydric acid pickling Wastewater Pretreatment dress
Put, including rotary solar water heater, negative pressure evaporation pond, condensation reservoir, gas absorption cell, oxidization and sedimentation basin and multilayer filter tower.
Described rotary solar water heater includes base, hot-water line, heater inleting pipe, water heater outlet and water
Pump, heater inleting pipe connects with water pump.
Described negative pressure evaporation pond includes that negative pressure evaporation pond water inlet pipe, negative pressure evaporation pond outlet pipe, heat exchanger, pressure are adjusted
Control device and negative pressure evaporation pond escaping pipe, described negative pressure evaporation pond water inlet pipe and negative pressure evaporation pond outlet pipe are provided with switch valve
Door；Heat exchanger is provided with heat exchanger water inlet pipe and heat exchanger outlet pipe.Heat exchanger outlet pipe and rotary solar heat
The water pump connection of hydrophone, heat exchanger water inlet pipe is connected with water heater outlet.
Described negative pressure evaporation pond escaping pipe connects the steam inlet of condensation reservoir.
Described condensation reservoir includes steam inlet, hydrochloric acid reception tank, coolant inlet, cooling liquid outlet, steam (vapor) outlet.
Described gas absorption cell is provided with gas absorption cell air inlet pipe, and gas absorption cell air inlet pipe goes out with the steam of condensation reservoir
Mouthful connection, gas absorption cell is provided with gas absorption cell and covers, gas absorption cell upper cover design coning structure, conical structure
Top is provided with gas absorption cell discharge, and HCl gas absorbent is contained with gas absorption cell.
Described negative pressure evaporation pond outlet pipe connection oxidization and sedimentation basin water inlet pipe.
Described oxidization and sedimentation basin includes mixed zone and settling zone, and mixed zone bottom is provided with aeration plate, described aeration
Oxidization and sedimentation basin water distribution branch pipe is provided with above disk, described oxidization and sedimentation basin water distribution branch pipe connects oxidization and sedimentation basin water inlet pipe,
Described aeration plate is connected with the air blower outside oxidization and sedimentation basin by aeration tube, and baffle plate is provided with the settling zone, the baffle plate
The waste water runner for entering settling zone as waste water is formed with the inwall of sedimentation basin, the exit of settling zone is provided with oxidization and sedimentation basin three
Phase separator, the outlet top of settling zone is provided with oxidization and sedimentation basin overfalling weir, the tapered structure of settling zone bottom design, in precipitation
Area bottom is provided with sediment discharge valve.Oxidization and sedimentation basin overfalling weir connects oxidization and sedimentation basin outlet pipe.
The multilayer filter tower includes top cover, multilayer filter tower water inlet pipe, multilayer filter tower water distributor, filtrate, filtrate support frame, enters
Air port and multilayer filter tower outlet pipe；Multilayer filter tower is set using multilayer, and top is provided with top cover, is left out between top cover and tower body
Air port；The top cover of filter tower is arranged below multilayer filter tower water inlet pipe, one end connection oxidization and sedimentation basin water outlet of multilayer filter tower water inlet pipe
Pipe, the other end connection multilayer filter tower water distributor of multilayer filter tower water inlet pipe；Multilayer filter tower water distributor is placed in one layer of the top
Filtrate top；Filtrate is placed on filtrate support frame, and from upper strata to lower floor, the particle diameter of filtrate is tapered into；Filtrate support sets up
Inverted trapezoidal drawer type is counted into, is easy to observe and change filtrate, when this layer of filter clogging is serious, when filtering velocity is very low, only need to be the layer
Filtrate is extracted out and changed；The bottom of multilayer filter tower is provided with air inlet and multilayer filter tower outlet pipe.
The water outlet of multilayer filter tower outlet pipe enters advanced waste treatment system.
The method that wastewater treatment is carried out using above-mentioned steel chlorohydric acid pickling sewage pretreatment device, with following steps：
1. steel chlorohydric acid pickling waste water enters negative pressure evaporation pond by negative pressure evaporation pond water inlet pipe, from solar water heater
Hot water carry out heat exchange with waste water in a heat exchanger, waste water is heated, pressure controlling device regulation negative pressure evaporation pond it is true
Reciprocal of duty cycle, the raising of vacuum can be greatly lowered the reaction temperature of waste water, waste water is seethed with excitement at relatively low temperature, plus
The diffusion rate of fast HCl, reduces evaporation time.HCl in waste water is evaporated from waste water, by negative pressure evaporation pond escaping pipe
Into condensation reservoir；Waste water after evaporation enters oxidization and sedimentation basin water inlet pipe by negative pressure evaporation pond outlet pipe.Rotary solar
Position adjustment direction of the water heater according to the sun, it is ensured that receive the heat energy of the sun to greatest extent.
2. steam enters condensation reservoir by steam inlet, and coolant enters condensation reservoir, steam and cooling by coolant inlet
Liquid is contacted, and the heat in steam is absorbed by coolant to be taken away, and HCl gases become hydrochloric acid liquid, fall under gravity into salt
Sour reception tank, the HCl recovery in hydrochloric acid reception tank is recycled；Absorb the coolant after heat to be flowed out by cooling liquid outlet, cooling
Steam afterwards enters gas absorption cell by steam (vapor) outlet and gas absorption cell air inlet pipe, and the HCl gas in gas absorption cell absorb
Agent further absorbs the HCl compositions in gas, and the gas collection after the discharge on gas absorption cell top processes absorption is discharged.
3. the waste water after evaporating enters oxidation precipitation by oxidization and sedimentation basin water inlet pipe and oxidization and sedimentation basin water distribution branch pipe
The middle and lower part in pond；Aeration plate below oxidization and sedimentation basin water distribution branch pipe produces a large amount of tiny bubbles, the Fe in waste water2+Oxygen
Chemical conversion Fe3+, generate Fe2O3, waste water after oxidation reaction enters the waste water runner of settling zone, oxidization and sedimentation basin three phase separator reality
Existing separation of solid and liquid；Fe2O3The bottom of settling zone is sunk under gravity, is discharged by the sediment discharge valve of bottom；It is useless
Water enters multilayer filter tower water inlet pipe by oxidization and sedimentation basin overfalling weir and oxidization and sedimentation basin outlet pipe.
4. waste water enters multilayer filter tower by multilayer filter tower water inlet pipe and multilayer filter tower water distributor, and air is with waste water in filtrate
In cross, filtrate is filtered to waste water, at the same occur biochemical reaction, multilayer filter tower treatment after water enter multilayer filter tower water outlet
Pipe, the water outlet of multilayer filter tower outlet pipe is further processed into advanced waste treatment system.
5. the Fe that oxidization and sedimentation basin is discharged2O3Recycled after dehydration, drying.
The beneficial effects of the invention are as follows：Suit measures to local conditions, capital expenditure is few, easy to maintenance, energy consumption is relatively low, to the acid of steel hydrochloric acid
Washing waste water has relatively good treatment depth effect, can realize sewage recycling, and sewage is comprehensively utilized.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation in embodiment of the present invention negative pressure evaporation pond.
In Fig. 1：1. negative pressure evaporation pond, 1-1. negative pressure evaporations pond water inlet pipe, 1-2. negative pressure evaporations pond outlet pipe, 1-3. heat is handed over
Parallel operation, 1-4. pressure controlling devices, 1-5. negative pressure evaporations pond escaping pipe, 1-6. heat exchanger water inlet pipes, 1-7. heat exchangers go out
Water pipe.
Fig. 2 is the structural representation of embodiment of the present invention condensation reservoir.
In Fig. 2：2. condensation reservoir, 2-1. steam inlets, 2-2. steam (vapor) outlets, 2-3. hydrochloric acid reception tanks, 2-4. coolants enter
Mouthful, 2-5. cooling liquid outlets.
Fig. 3 is the structural representation of embodiment of the present invention gas absorption cell.
In Fig. 3：3. gas absorption cell, 3-1. gas absorption cell air inlet pipe, cover on 3-2. gas absorption cells, and 3-3. gases are inhaled
Receives pond discharge, 3-4. HCl gas absorbents.
Fig. 4 is the structural representation of embodiment of the present invention oxidization and sedimentation basin.
In Fig. 4：4. oxidization and sedimentation basin, 4-1. mixed zones, 4-2. settling zones, 4-3. aeration plates, 4-4. oxidization and sedimentation basin cloth
Water branch pipe, 4-5. oxidization and sedimentation basin water inlet pipes, 4-6. air blowers, 4-7. baffle plates, 4-8. oxidization and sedimentation basin three phase separators, 4-9.
Oxidization and sedimentation basin overfalling weir, 4-10. sediment discharge valves.
Fig. 5 is the structural representation of embodiment of the present invention multilayer filter tower.
In Fig. 5：5. multilayer filter tower, 5-1. top covers, 5-2. multilayer filter tower water inlet pipes, 5-3. multilayer filter tower water distributors, 5-4.
Filtrate, 5-5. filtrate support frames, 5-6. air inlets, 5-7. multilayer filter tower outlet pipes.
Fig. 6 is the process chart of the embodiment of the present invention.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant with the present invention.
Embodiment
As shown in Fig. 1~Fig. 6, a kind of steel chlorohydric acid pickling sewage pretreatment device of the invention, including rotary solar
Water heater, negative pressure evaporation pond 1, condensation reservoir 2, gas absorption cell 3, oxidization and sedimentation basin 4 and multilayer filter tower 5.
Described rotary solar water heater includes base, hot-water line, heater inleting pipe, water heater outlet and water
Pump, heater inleting pipe connects with water pump.
Described negative pressure evaporation pond 1 includes negative pressure evaporation pond water inlet pipe 1-1, negative pressure evaporation pond outlet pipe 1-2, heat exchanger
1-3, pressure controlling device 1-4, negative pressure evaporation pond escaping pipe 1-5, described negative pressure evaporation pond water inlet pipe 1-1, negative pressure evaporation pond
Outlet pipe 1-2 is provided with controlled valve；Heat exchanger 1-3 is provided with heat exchanger water inlet pipe 1-6 and heat exchanger outlet pipe 1-7.
Heat exchanger outlet pipe 1-7 is connected with the water pump of rotary solar water heater, heat exchanger water inlet pipe 1-6 and water outlet of water heater
Pipe is connected.
Described negative pressure evaporation pond escaping pipe 1-5 connections steam inlet 2-1.
Described condensation reservoir 2 include steam inlet 2-1, steam (vapor) outlet 2-2, hydrochloric acid reception tank 2-3, coolant inlet 2-4,
Cooling liquid outlet 2-5.
Described gas absorption cell 3 is provided with gas absorption cell air inlet pipe 3-1, and gas absorption cell is provided with gas absorption cell and covers
3-2, gas absorption cell upper cover design coning structure, conical structure top is provided with gas absorption cell discharge 3-3, gas
HCl gas absorbent 3-4 is contained with absorption cell.
Described negative pressure evaporation pond outlet pipe 1-2 connection oxidization and sedimentation basin water inlet pipes.
Described oxidization and sedimentation basin 4 includes mixed zone 4-1 and settling zone 4-2, and mixed zone bottom is provided with aeration plate 4-3,
Oxidization and sedimentation basin water distribution branch pipe 4-4, described oxidization and sedimentation basin water distribution branch pipe 4-4 connection oxygen are provided with above described aeration plate
Change sedimentation basin water inlet pipe 4-5, described aeration plate 4-3 is connected with the air blower 4-6 outside oxidization and sedimentation basin by aeration tube, described
Baffle plate 4-7 is provided with settling zone, the baffle plate forms the waste water runner for entering settling zone as waste water, precipitation with the inwall of sedimentation basin
The exit in area is provided with oxidization and sedimentation basin three phase separator 4-8, and the outlet top of settling zone is provided with oxidization and sedimentation basin overfalling weir 4-
9, bottom design tapered structure in settling zone is provided with sediment discharge valve 4-10 in settling zone bottom.Oxidization and sedimentation basin spilling water
Weir 4-9 connects oxidization and sedimentation basin outlet pipe.
Multilayer filter tower 5 includes top cover 5-1, multilayer filter tower water inlet pipe 5-2, multilayer filter tower water distributor 5-3, filtrate 5-4, filtrate
Support frame 5-5, air inlet 5-6 and multilayer filter tower outlet pipe 5-7；Multilayer filter tower 5 is set using multilayer, and top is provided with top cover 5-
1, leave air outlet between top cover 5-1 and tower body；The top cover 5-1 of filter tower is arranged below multilayer filter tower water inlet pipe 5-2, multilayer filter tower
Water inlet pipe 5-2 connection multilayer filter tower water distributors 5-3；Multilayer filter tower water distributor 5-3 is placed in topmost one layer of filtrate top；Filter
Material 5-4 is placed on filtrate support frame 5-5, and the particle diameter from upper strata to lower floor's filtrate is tapered into；Filtrate support frame is designed to down
Trapezoidal drawer type, on the one hand strengthens ventilation, it is to avoid produces foul smell, is on the other hand easy to observe and change filtrate, when the metafiltration material
Block serious, when filtering velocity is very low, the metafiltration material need to only be extracted out and changed；The bottom of multilayer filter tower be provided with air inlet 5-6 and
Multilayer filter tower outlet pipe 5-7.
The water outlet of multilayer filter tower outlet pipe enters advanced waste treatment system.
The method that wastewater treatment is carried out using above-mentioned steel chlorohydric acid pickling sewage pretreatment device, with following steps：
1. steel chlorohydric acid pickling waste water enters negative pressure evaporation pond by negative pressure evaporation pond water inlet pipe 1-1, from solar heat
The hot water of hydrophone carries out heat exchange in heat exchanger 1-3 with waste water, and waste water is heated, pressure controlling device 1-4 regulation negative pressure
The vacuum of evaporation tank, the raising of vacuum can be greatly lowered the reaction temperature of waste water, make waste water in relatively low temperature
The lower boiling of degree, accelerates the diffusion rate of HCl, reduces evaporation time.HCl in waste water is evaporated from waste water, by negative pressure
Evaporation tank escaping pipe 1-5 enters condensation reservoir 2；Waste water after evaporation enters oxidization and sedimentation basin by negative pressure evaporation pond outlet pipe 1-2
Water inlet pipe 4-5..Position adjustment direction of the rotary solar water heater according to the sun, it is ensured that receive the heat of the sun to greatest extent
Energy.
2. HCl steam enters condensation reservoir 2 by steam inlet 2-1, and coolant enters condensation reservoir by coolant inlet 2-4,
Steam is contacted with coolant, and the heat in steam is absorbed by coolant to be taken away, and HCl gases become hydrochloric acid liquid, in the work of gravity
Hydrochloric acid reception tank 2-3 is fallen under, the HCl recovery in hydrochloric acid reception tank is recycled；The coolant after heat is absorbed by coolant
Outlet 2-5 outflows, the steam after cooling enters gas absorption cell 3, gas by steam (vapor) outlet 2-2 and gas absorption cell air inlet pipe 3-1
HCl gas absorbent 3-4 in body absorption cell 3 absorbs the HCl compositions in gas, and gas absorption cell discharge 3-3 is at absorption
Gas collection discharge after reason.
3. the waste water after evaporating enters oxygen by oxidization and sedimentation basin water inlet pipe 4-5 and oxidization and sedimentation basin water distribution branch pipe 4-4
Change the middle and lower part of sedimentation basin；Aeration plate 4-3 below oxidization and sedimentation basin water distribution branch pipe 4-4 produces a large amount of tiny bubbles,
Fe in waste water2+It is oxidized to Fe3+, generate Fe2O3, waste water after oxidation reaction enters the waste water runner of settling zone, oxidation precipitation
Pond three phase separator 4-8 realizes separation of solid and liquid；Fe2O3The bottom of the settling zone of oxidization and sedimentation basin is sunk under gravity,
Discharged by the sediment discharge valve 4-10 of bottom；Waste water passes through oxidization and sedimentation basin overfalling weir 4-9 and oxidization and sedimentation basin outlet pipe
Into multilayer filter tower water inlet pipe.
4. waste water enters multilayer filter tower, air and waste water by multilayer filter tower water inlet pipe 5-2 and multilayer filter tower water distributor 5-3
Crossed in filtrate 5-4, filtrate is filtered to waste water, while there is biochemical reaction, the water after the treatment of multilayer filter tower enters many
Metafiltration tower outlet pipe 5-7, the water outlet of multilayer filter tower outlet pipe is further processed into advanced waste treatment system.
5. the Fe that oxidization and sedimentation basin is discharged2O3Recycled after dehydration, drying.
With above-mentioned according to desirable embodiment of the invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be without departing from the scope of the technological thought of the present invention' carried out entirely.This invention it is technical
Scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (2)
1. a kind of steel chlorohydric acid pickling sewage pretreatment device, it is characterised in that：Steamed including rotary solar water heater, negative pressure
Hair pond (1), condensation reservoir (2), gas absorption cell (3), oxidization and sedimentation basin (4) and multilayer filter tower (5)；
Described rotary solar water heater includes base, hot-water line, heater inleting pipe, water heater outlet and water pump,
Heater inleting pipe connects with water pump；
Described negative pressure evaporation pond (1) includes negative pressure evaporation pond water inlet pipe (1-1), negative pressure evaporation pond outlet pipe (1-2), heat exchange
Device (1-3), pressure controlling device (1-4) and negative pressure evaporation pond escaping pipe (1-5), described negative pressure evaporation pond water inlet pipe (1-1),
Negative pressure evaporation pond outlet pipe (1-2) is provided with controlled valve；Heat exchanger (1-3) is provided with heat exchanger water inlet pipe (1-6) and heat
Exchanger water pipe (1-7)；Heat exchanger outlet pipe (1-7) is connected with the water pump of rotary solar water heater, heat exchanger
Water inlet pipe (1-6) is connected with water heater outlet；
Described negative pressure evaporation pond escaping pipe (1-5) connection steam inlet (2-1)；
Described condensation reservoir (2) includes steam inlet (2-1), steam (vapor) outlet (2-2), hydrochloric acid reception tank (2-3), coolant inlet
(2-4) and cooling liquid outlet (2-5)；
Described gas absorption cell (3) is provided with lid (3-2) on gas absorption cell air inlet pipe (3-1) and gas absorption cell, and gas is inhaled
Receives pond upper cover design coning structure, conical structure top is provided with gas absorption cell discharge (3-3), in gas absorption cell
It is contained with HCl gas absorbent (3-4)；
Described negative pressure evaporation pond outlet pipe (1-2) connection oxidization and sedimentation basin water inlet pipe；
Described oxidization and sedimentation basin (4) includes mixed zone (4-1) and settling zone (4-2), and mixed zone bottom is provided with aeration plate (4-
3) oxidization and sedimentation basin water distribution branch pipe (4-4), described oxidization and sedimentation basin water distribution branch pipe (4-, are provided with above described aeration plate
4) connection oxidization and sedimentation basin water inlet pipe (4-5), described aeration plate (4-3) is connected with the air blower (4-6) outside oxidization and sedimentation basin,
Baffle plate (4-7) is provided with the settling zone, the baffle plate is formed with the inwall of oxidization and sedimentation basin and enters the useless of settling zone as waste water
Water flow passage, the exit of settling zone is provided with oxidization and sedimentation basin three phase separator (4-8), and the outlet top of settling zone is provided with oxidation and sinks
Shallow lake pond overfalling weir (4-9), the tapered structure of settling zone bottom design is provided with sediment discharge valve (4- in settling zone bottom
10)；Oxidization and sedimentation basin overfalling weir (4-9) connects oxidization and sedimentation basin outlet pipe；
Multilayer filter tower (5) includes top cover (5-1), multilayer filter tower water inlet pipe (5-2), multilayer filter tower water distributor (5-3), filtrate (5-
4), filtrate support frame (5-5), air inlet (5-6) and multilayer filter tower outlet pipe (5-7)；Multilayer filter tower (5) is set using multilayer,
Top is provided with top cover (5-1), and top cover (5-1) leaves air outlet and tower body between；The top cover (5-1) of filter tower is arranged below multilayer
Filter tower water inlet pipe (5-2), multilayer filter tower water inlet pipe one end connection oxidization and sedimentation basin outlet pipe, multilayer filter tower water inlet pipe it is another
End connection multilayer filter tower water distributor (5-3)；Multilayer filter tower water distributor (5-3) is placed in topmost one layer of filtrate top；Filtrate
(5-4) is placed on filtrate support frame (5-5), and the particle diameter from upper strata to lower floor's filtrate is tapered into；Filtrate support frame is designed to
Inverted trapezoidal drawer type, the bottom of multilayer filter tower is provided with air inlet (5-6) and multilayer filter tower outlet pipe (5-7)；
The water outlet of multilayer filter tower outlet pipe enters advanced waste treatment system.
2. the method that a kind of use steel chlorohydric acid pickling sewage pretreatment device as claimed in claim 1 carries out wastewater treatment,
It is characterized in that：With following steps；
1. steel chlorohydric acid pickling waste water enters negative pressure evaporation pond by negative pressure evaporation pond water inlet pipe (1-1), from solar water
The hot water of device carries out heat exchange in heat exchanger (1-3) with waste water, and waste water is heated, and pressure controlling device (1-4) regulation is negative
The vacuum of evaporation tank is pressed, the raising of vacuum can be greatly lowered the reaction temperature of waste water, make waste water relatively low
At a temperature of seethe with excitement, accelerate HCl gases diffusion rate, reduce evaporation time；HCl gases in waste water are evaporated from waste water
Go, condensation reservoir (2) is entered by negative pressure evaporation pond escaping pipe (1-5)；Waste water after evaporation is by negative pressure evaporation pond outlet pipe (1-
2) oxidization and sedimentation basin water inlet pipe (4-5) is entered；Position adjustment direction of the rotary solar water heater according to the sun, it is ensured that maximum
Limit receives the heat energy of the sun；
2. HCl gases enter condensation reservoir (2) by steam inlet (2-1), and coolant enters condensation by coolant inlet (2-4)
Pond, steam is contacted with coolant, and the heat in steam is absorbed by coolant to be taken away, and HCl gases become hydrochloric acid liquid, in gravity
Hydrochloric acid reception tank (2-3) is fallen under effect, the HCl recovery in hydrochloric acid reception tank is recycled；The coolant after heat is absorbed by cold
But liquid outlet (2-5) outflow, the steam after cooling enters gas by steam (vapor) outlet (2-2) and gas absorption cell air inlet pipe (3-1)
Absorption cell (3), the HCl gas absorbent (3-4) in gas absorption cell (3) absorbs the HCl compositions in gas, gas absorption cell
Gas collection after discharge (3-3) processes absorption is discharged；
3. the waste water after evaporating enters oxygen by oxidization and sedimentation basin water inlet pipe (4-5) and oxidization and sedimentation basin water distribution branch pipe (4-4)
Change the middle and lower part of sedimentation basin；Aeration plate (4-3) below oxidization and sedimentation basin water distribution branch pipe (4-4) produces a large amount of tiny gas
Bubble, the Fe in waste water2+It is oxidized to Fe3+, generate Fe2O3, waste water after oxidation reaction enters the waste water runner of settling zone, oxidation
Sedimentation basin three phase separator (4-8) realizes separation of solid and liquid；Fe2O3Oxidization and sedimentation basin settling zone is sunk under gravity
Bottom, is discharged by the sediment discharge valve (4-10) of bottom；Waste water passes through oxidization and sedimentation basin overfalling weir (4-9) and oxidation precipitation
Pond outlet pipe enters multilayer filter tower water inlet pipe；
4. waste water enters multilayer filter tower, air and waste water by multilayer filter tower water inlet pipe (5-2) and multilayer filter tower water distributor (5-3)
Crossed in filtrate (5-4), filtrate is filtered to waste water, while there is biochemical reaction, the water after the treatment of multilayer filter tower enters
Multilayer filter tower outlet pipe (5-7), the water outlet of multilayer filter tower outlet pipe is further processed into advanced waste treatment system；
5. the Fe that oxidization and sedimentation basin is discharged2O3Recycled after being dehydrated, drying.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112401926A (en) * | 2020-10-23 | 2021-02-26 | 宋娟 | Combined examination and diagnosis device for ultrasound department |
| CN114234696A (en) * | 2021-12-21 | 2022-03-25 | 江阴市索创工业精密制冷设备有限公司 | 35MPa hydrogenation station cooling system |
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