CN105541035A - Heavy metal ion-containing electroplating effluent treatment equipment - Google Patents
Heavy metal ion-containing electroplating effluent treatment equipment Download PDFInfo
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- CN105541035A CN105541035A CN201610029893.1A CN201610029893A CN105541035A CN 105541035 A CN105541035 A CN 105541035A CN 201610029893 A CN201610029893 A CN 201610029893A CN 105541035 A CN105541035 A CN 105541035A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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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- Geochemistry & Mineralogy (AREA)
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- Environmental & Geological Engineering (AREA)
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- Water Treatment By Sorption (AREA)
Abstract
The invention relates to heavy metal ion-containing electroplating effluent treatment equipment. The heavy metal ion-containing electroplating effluent treatment equipment comprises an effluent equalization pond, an adsorption coagulative precipitation tank, a baffling type biochemical pond and a flowing sand filter, wherein the adsorption coagulative precipitation tank comprises an adsorption area, a coagulation area and a precipitation area; an adsorption coagulative precipitation tank water inlet pipe is arranged at the middle upper part of the adsorption area, and an adsorbent addition metering system is arranged at the upper part; a coagulant addition metering system is arranged at the middle upper part of the coagulation area; an adsorption coagulative precipitation tank overflow weir is arranged at the upper part of the outlet of the precipitation area; the bottom of the precipitation area is designed into a conical structure; a precipitate discharge valve is arranged at the bottom of the conical structure; the middle upper part of the baffling type biochemical pond is cylindrical and the lower part is conical; the baffling type biochemical pond comprises a lower flow area, an upper flow area and a sludge area; the flowing sand filter comprises a water distribution area, a washed-out sand area and a sand filtering area.
Description
Technical field
The present invention relates to environmental technology field, be specifically related to a kind of electroplating wastewater with heavy metal ions treatment unit.
Background technology
Because plating piece function and coating material require different, technique tank liquor, scavenging solution, operating method, processing condition etc. are of a great variety, material contained by correspondingly produced electroplating wastewater also just becomes comparatively complicated, but the principal pollutant in electroplating wastewater are metal ion.
After entering earth's surface without the electroplating wastewater effectively processed, not only ecotope can be endangered, and understand polluted drinking water and process water, pollution substance in waste water is in the environment after the processes such as accumulation, migration, conversion, enter in people and animal and plant body, make people and vegeto-animal health be subject to very large threat, therefore effectively must process it, Pollutant Treatment is wherein required and following level to relevant criterion.
Carry out processing often less effective containing the traditional chemical precipitation method of electroplating wastewater of heavy metal ion, reverse osmosis method, this is a great problem of electroplating wastewater with heavy metal ions process, and absorption method has good advantage in the application of removing heavy metal in waste water, current scholars have studied multiple sorbent material and have processed heavy metal ion in solution, but in practical application still old many limitation.And existing treatment process ubiquity treatment unit is more, investment and working cost be compared with problems such as high, energy consumption are large, cell processing load is lower.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the process problem of above-mentioned electroplating wastewater with heavy metal ions, the invention provides a kind of electroplating wastewater with heavy metal ions treatment unit.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electroplating wastewater with heavy metal ions treatment unit, comprise wastewater equalization pond, absorption and coagulation settling tank, deflector type biochemistry pool and flowing sand filter tank, wastewater equalization pond, absorption and coagulation settling tank, deflector type biochemistry pool are communicated with successively with flowing sand filter tank.
Described wastewater equalization pond comprises equalizing tank water inlet pipe and equalizing tank rising pipe, for regulating water quality and the water yield of waste water.
Described absorption and coagulation settling tank comprises adsorption zone, coagulation district and settling region.
The middle and upper part of described adsorption zone is provided with absorption and coagulation settling tank water inlet pipe, and the top of adsorption zone is provided with sorbent material and adds metering system; The middle part of adsorption zone is provided with adsorption zone agitator, and the bottom of adsorption zone is provided with the base plate of inclination, and the waste water after absorption reaction flows into the middle and lower part in coagulation district along the base plate tilted.
The preparation process of sorbent material is:
1. flyash, clay and calcium carbonate are pulverized respectively, sieved, in mass ratio 3:3:4 mix and blend;
2. the mixture after being uniformly mixed and water 3:7 mixing and stirring in mass ratio, natural air drying, pulverizes, sieves;
3. the mixture after screening is calcined 60 ~ 100 minutes at 700 ~ 1200 DEG C;
4. calcined material cooled, pulverize, sieve, obtained sorbent material.
Be provided with flow-stopping plate between described adsorption zone and coagulation district, the bottom of flow-stopping plate is provided with the corner of 45 degree, and corner turns to side, adsorption zone.The middle and upper part in coagulation district is provided with coagulating agent and adds metering system, and described coagulating agent is iron(ic) chloride or ferrum sulfuricum oxydatum solutum.Bottom, coagulation district is provided with coagulation district whipping appts.
Dividing plate is provided with between described coagulation district and settling region, the inwall of this dividing plate and absorption and coagulation settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with absorption and coagulation settling tank triphase separator, the outlet top of settling region is provided with absorption and coagulation settling tank overfalling weir, the tapered structure of settling region bottom design, is provided with sediment discharge valve bottom pyramidal structure.Absorption and coagulation settling tank overfalling weir connects absorption and coagulation settling tank rising pipe, and absorption and coagulation settling tank rising pipe connects deflector type biochemistry pool water inlet pipe.
Described deflector type biochemistry pool middle and upper part is cylindrical, bottom is conical structure, comprises lower current area, ascending zone and mud district; Described lower current area is positioned at the middle part of the cylindrical structural of deflector type biochemistry pool, for cylindrical structural, lower current area top is provided with deflector type biochemistry pool water inlet pipe and deflector type biochemistry pool water distributor, lower current area filler is provided with in the middle part of lower current area, lower current area bottom is provided with lower current area aeration tube, the bottom of described lower current area is provided with traverse baffle, and the longitudinal section of described traverse baffle is horn-like; Described ascending zone is positioned at the periphery of lower current area, the top of traverse baffle, is provided with ascending zone filler in the middle part of ascending zone, and bottom is provided with ascending zone aeration tube, and the exit on ascending zone top is provided with deflector type biochemistry pool overfalling weir; Described mud district is positioned at the bottom of the bottom of deflector type biochemistry pool, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve.
Described flowing sand filter tank comprises flowing sand filter tank water inlet pipe and the flowing sand filter tank rising pipe for discharging the rear water of process, and described flowing sand filter tank comprises water distribution area, washed-out sand district and sand filtration district, described water distribution area is positioned at the bottom in flowing sand filter tank, water distribution area is provided with flowing sand filter tank water distributor, flowing sand filter tank water distributor connects flowing sand filter tank water inlet pipe, in order to the better effects if of wastewater treatment, concentric circles is arranged to by described flowing sand filter tank water distributor, and flowing sand filter tank water distributor has downward radiation water outlet, described washed-out sand district is positioned at the center in flowing sand filter tank, for cylindrical barrel structure, cylindrical barrel structure lower ending opening is positioned at the bottommost in flowing sand filter tank, cylindrical barrel structure upper end open is positioned at the top in flowing sand filter tank, the middle part in washed-out sand district is provided with stripping tube, stripping tube connects the flowing sand filter tank gas blower outside flowing sand filter tank, the top in washed-out sand district is provided with sand water precipitation disengaging zone, the top of sand water precipitation disengaging zone is provided with washed-out sand district overfalling weir, washed-out sand district overfalling weir connects washed-out sand water discharge spout and deflector type biochemistry pool water inlet pipe, the bottom of sand water precipitation disengaging zone is provided with back sand passage, described sand filtration district is positioned at the periphery in washed-out sand district, and sand filtration is filled with fine sand in district, and top, sand filtration district is provided with sand filtration district overfalling weir, and sand filtration district overfalling weir connects flowing sand filter tank rising pipe, the water qualified discharge after the process of flowing sand filter.
Adopt above-mentioned electroplating wastewater with heavy metal ions treatment unit to carry out a method for wastewater treatment, there are following steps:
1. electroplating wastewater with heavy metal ions enters wastewater equalization pond by equalizing tank water inlet pipe, regulating water quality and the water yield.
2. then waste water enters adsorption zone by absorption and coagulation settling tank water inlet pipe, and sorbent material adds metering system and adds sorbent material, and adsorption zone agitator is uniformly mixed waste water, and the heavy metal ion in waste water is by adsorbent and absorption.
3. the space between the inclined floor that is provided with by bottom, adsorption zone of waste water and flow-stopping plate enters coagulation district, mixes, utilize the coagulation district whipping appts be arranged on bottom coagulation district to stir with the coagulant solution adding metering system from coagulating agent.
4. then waste water enters the waste water runner of settling region, absorption and coagulation settling tank triphase separator realizes being separated of waste water and solid, throw out sinks to the bottom of settling region under gravity, discharged by the sediment discharge valve of bottom, the waste water after precipitation enters deflector type biochemistry pool water inlet pipe by absorption and coagulation settling tank overfalling weir and absorption and coagulation settling tank rising pipe.
5. waste water is by deflector type biochemistry pool water inlet pipe, deflector type biochemistry pool water distributor enters the lower current area of deflector type biochemistry pool, the air that lower current area aeration tube produces and waste water cross generation biochemical reaction in lower current area filler, lower current area filler filters waste water simultaneously, waste water is by entering ascending zone after traverse baffle, biochemical reaction is there is in ascending zone filler, ascending zone filler filters waste water simultaneously, the mud that lower current area and ascending zone produce sinks to mud district, emitted by the mud discharging valve bottom mud district, water after the process of deflector type biochemistry pool enters flowing sand filter tank by deflector type biochemistry pool overfalling weir and deflector type biochemistry pool rising pipe.
6. waste water enters the bottom in flowing sand filter tank by flowing sand filter tank water inlet pipe, flowing sand filter tank water distributor, flowing sand filter tank water distributor realizes water distribution uniformity, waste water enters sand filtration district, pollutent in waste water is further filtered, then waste water is flowed out by sand filtration district overfalling weir and flowing sand filter tank rising pipe through sand filtration district, qualified discharge; The air-flow that flowing sand filter tank gas blower produces drives the Sha Heshui in washed-out sand district upwards to flow, sand is rinsed simultaneously, air-flow drives the Sha Heshui in washed-out sand district to enter sand water precipitation disengaging zone, because sand is different with the proportion of water, fine deposition goes down and passes through back sand passage and flows into sand filtration district, realize the continuous movement from top to bottom of fine sand in sand filtration district, the water in sand water precipitation disengaging zone enters deflector type biochemistry pool by washed-out sand district overfalling weir and washed-out sand water discharge spout and carries out reprocessing.
7. the throw out of absorption and coagulation settling tank generation and mud outward transport after concentrating, dewatering of deflector type biochemistry pool discharge.
The invention has the beneficial effects as follows: suit measures to local conditions, initial cost is few, easy to maintenance, and energy consumption is lower, has reasonable treatment effect to waste water.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of embodiment of the present invention absorption and coagulation settling tank.
In Fig. 1: 1. absorption and coagulation settling tank, 1-1. adsorption zone, 1-2. coagulation district, 1-3. settling region, 1-4. absorption and coagulation settling tank water inlet pipe, 1-5. sorbent material adds metering system, 1-6. adsorption zone agitator, 1-7. base plate, 1-8. flow-stopping plate, 1-9. coagulating agent adds metering system, 1-10. coagulation district whipping appts, 1-11. dividing plate, 1-12. absorption and coagulation settling tank triphase separator, 1-13. absorption and coagulation settling tank overfalling weir, 1-14. sediment discharge valve.
Fig. 2 is the structural representation of embodiment of the present invention deflector type biochemistry pool.
In Fig. 2: 2. deflector type biochemistry pool, 2-1. lower current area, 2-2. ascending zone, 2-3. mud district, 2-4. deflector type biochemistry pool water inlet pipe, 2-5. deflector type biochemistry pool water distributor, 2-6. lower current area filler, 2-7. lower current area aeration tube, 2-8. traverse baffle, 2-9. ascending zone filler, 2-10. ascending zone aeration tube, 2-11. deflector type biochemistry pool overfalling weir, 2-12. mud discharging valve.
Fig. 3 is the structural representation in embodiment of the present invention flowing sand filter tank.
In Fig. 3: 3. flowing sand filter tank, 3-1. flowing sand filter tank water inlet pipe, 3-2. flowing sand filter tank water distributor, 3-3. stripping tube, 3-4. flowing sand filter tank gas blower, 3-5. washed-out sand district overfalling weir, 3-6. returns sand passage, 3-7. sand filtration district overfalling weir.
Fig. 4 is the process flow sheet of the embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are rough schematic view, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment
As shown in Figure 1 to 4, a kind of electroplating wastewater with heavy metal ions treatment unit of the present invention, comprise wastewater equalization pond, absorption and coagulation settling tank 1, deflector type biochemistry pool 2 and flowing sand filter tank 3, wastewater equalization pond, absorption and coagulation settling tank 1, deflector type biochemistry pool 2 are communicated with successively with flowing sand filter tank 3.
Described wastewater equalization pond comprises equalizing tank water inlet pipe and equalizing tank rising pipe, for regulating water quality and the water yield of waste water.
Described absorption and coagulation settling tank 1 comprises adsorption zone 1-1, coagulation district 1-2 and settling region 1-3.
The middle and upper part of described adsorption zone 1-1 is provided with absorption and coagulation settling tank water inlet pipe 1-4, and the top of adsorption zone is provided with sorbent material and adds metering system 1-5, and the middle part of adsorption zone is provided with adsorption zone agitator 1-6; The bottom of adsorption zone is provided with the base plate 1-7 of inclination, and the waste water after absorption reaction flows into the middle and lower part of coagulation district 1-2 along the base plate tilted.
The preparation process of sorbent material is:
1. flyash, clay and calcium carbonate are pulverized respectively, sieved, in mass ratio 3:3:4 mix and blend;
2. the mixture after being uniformly mixed and water 3:7 mixing and stirring in mass ratio, natural air drying, pulverizes, sieves;
3. the mixture after screening is calcined 60 ~ 100 minutes at 700 ~ 1200 DEG C;
4. calcined material cooled, pulverize, sieve, obtained sorbent material.
Be provided with flow-stopping plate 1-8 between described adsorption zone 1-1 and coagulation district 1-2, the bottom of flow-stopping plate 1-8 is provided with the corner of 45 degree, and corner turns to side, adsorption zone.The middle and upper part of coagulation district 1-2 is provided with coagulating agent and adds metering system 1-9, and described coagulating agent is iron(ic) chloride or ferrum sulfuricum oxydatum solutum.Bottom, coagulation district is provided with coagulation district whipping appts 1-10.
Dividing plate 1-11 is provided with between described coagulation district 1-2 and settling region 1-3, the inwall of this dividing plate and absorption and coagulation settling tank forms the waste water runner entering settling region 1-3 as waste water, the exit of settling region 1-3 is provided with absorption and coagulation settling tank triphase separator 1-12, the outlet top of settling region is provided with absorption and coagulation settling tank overfalling weir 1-13, the tapered structure of settling region bottom design, is provided with sediment discharge valve 1-14 bottom pyramidal structure.Absorption and coagulation settling tank overfalling weir 1-13 connects absorption and coagulation settling tank rising pipe, and absorption and coagulation settling tank rising pipe connects deflector type biochemistry pool water inlet pipe.
Described deflector type biochemistry pool 2 middle and upper part is cylindrical, bottom is conical structure, comprises lower current area 2-1, ascending zone 2-2 and mud district 2-3; Described lower current area 2-1 is positioned at the middle part of the cylindrical structural of deflector type biochemistry pool, for cylindrical structural, lower current area 2-1 top is provided with deflector type biochemistry pool water inlet pipe 2-4 and deflector type biochemistry pool water distributor 2-5, lower current area filler 2-6 is provided with in the middle part of lower current area, lower current area bottom is provided with lower current area aeration tube 2-7, the bottom of described lower current area is provided with traverse baffle 2-8, and the longitudinal section of described traverse baffle 2-8 is horn-like; Described ascending zone 2-2 is positioned at the periphery of lower current area 2-1, the top of traverse baffle, is provided with ascending zone filler 2-9 in the middle part of ascending zone, and bottom is provided with ascending zone aeration tube 2-10, and the exit on ascending zone top is provided with deflector type biochemistry pool overfalling weir 2-11; Described mud district 2-3 is positioned at the bottom of the bottom of deflector type biochemistry pool, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve 2-12.
Described flowing sand filter tank 3 comprises flowing sand filter tank water inlet pipe 3-1 and the flowing sand filter tank rising pipe for discharging the rear water of process, and described flowing sand filter tank comprises water distribution area, washed-out sand district and sand filtration district, described water distribution area is positioned at the bottom in flowing sand filter tank, water distribution area is provided with flowing sand filter tank water distributor 3-2, flowing sand filter tank water distributor 3-2 connects flowing sand filter tank water inlet pipe 3-1, in order to the better effects if of wastewater treatment, described flowing sand filter tank water distributor 3-2 is arranged to concentric circles, and flowing sand filter tank water distributor has downward radiation water outlet, described washed-out sand district is positioned at the center in flowing sand filter tank, for cylindrical barrel structure, cylindrical barrel structure lower ending opening is positioned at the bottommost in flowing sand filter tank, cylindrical barrel structure upper end open is positioned at the top in flowing sand filter tank, the middle part in washed-out sand district is provided with stripping tube 3-3, stripping tube 3-3 connects the flowing sand filter tank gas blower 3-4 outside flowing sand filter tank, the top in washed-out sand district is provided with sand water precipitation disengaging zone, the top of sand water precipitation disengaging zone is provided with washed-out sand district overfalling weir 3-5, washed-out sand district overfalling weir 3-5 connects washed-out sand water discharge spout and deflector type biochemistry pool water inlet pipe 2-4, the bottom of sand water precipitation disengaging zone is provided with back sand passage 3-6, described sand filtration district is positioned at the periphery in washed-out sand district, and sand filtration is filled with fine sand in district, and top, sand filtration district is provided with sand filtration district overfalling weir 3-7, and sand filtration district overfalling weir 3-7 connects flowing sand filter tank rising pipe, the water qualified discharge after the process of flowing sand filter.
Adopt above-mentioned electroplating wastewater with heavy metal ions treatment unit to carry out a method for wastewater treatment, there are following steps:
1. electroplating wastewater with heavy metal ions enters wastewater equalization pond by equalizing tank water inlet pipe, regulating water quality, the water yield.
2. then waste water enters adsorption zone 1-1 by absorption and coagulation settling tank water inlet pipe 1-4, and sorbent material adds metering system 1-5 and adds sorbent material, and adsorption zone agitator 1-6 is uniformly mixed waste water, and the heavy metal ion in waste water is by adsorbent and absorption.
3. the space between the inclined floor 1-7 that is provided with by bottom, adsorption zone of waste water and flow-stopping plate 1-8 enters coagulation district 1-2, mix with the coagulant solution adding metering system from coagulating agent, utilize the coagulation district whipping appts 1-10 be arranged on bottom coagulation district to stir.
4. waste water enters the waste water runner of settling region 1-3, absorption and coagulation settling tank triphase separator 1-12 realizes being separated of waste water and solid, throw out sinks to the bottom of settling region under gravity, discharged by the sediment discharge valve 1-14 of bottom, the waste water after precipitation enters deflector type biochemistry pool water inlet pipe 2-4 by absorption and coagulation settling tank overfalling weir 1-13 and absorption and coagulation settling tank rising pipe.
5. waste water is by deflector type biochemistry pool water inlet pipe 2-4, deflector type biochemistry pool water distributor 2-5 enters the lower current area 2-1 of deflector type biochemistry pool, the air that lower current area aeration tube 2-7 produces and waste water cross generation biochemical reaction in lower current area filler 2-6, lower current area filler 2-6 filters waste water simultaneously, waste water is by entering ascending zone 2-2 after traverse baffle 2-8, biochemical reaction is there is in ascending zone filler 2-9, ascending zone filler 2-9 filters waste water simultaneously, the mud that lower current area 2-1 and ascending zone 2-2 produces sinks to mud district 2-3, emitted by the mud discharging valve 2-12 bottom mud district, water after the process of deflector type biochemistry pool enters flowing sand filter tank by deflector type biochemistry pool overfalling weir 2-11 and deflector type biochemistry pool rising pipe.
6. waste water enters the bottom in flowing sand filter tank by flowing sand filter tank water inlet pipe 3-1, flowing sand filter tank water distributor 3-2, flowing sand filter tank water distributor 3-2 realizes water distribution uniformity, waste water enters sand filtration district, pollutent in waste water is further filtered, then waste water is through sand filtration district, flowed out by sand filtration district overfalling weir 3-7 and flowing sand filter tank rising pipe, qualified discharge; The air-flow that flowing sand filter tank gas blower 3-4 produces drives the Sha Heshui in washed-out sand district upwards to flow, sand is rinsed simultaneously, then sand and water enter sand water precipitation disengaging zone, because sand is different with the proportion of water, fine deposition goes down and passes through back sand passage 3-6 and flows into sand filtration district, realize the continuous movement from top to bottom of fine sand in sand filtration district, the water in sand water precipitation disengaging zone enters deflector type biochemistry pool by washed-out sand district overfalling weir 3-5 and washed-out sand water discharge spout and carries out reprocessing.
7. the throw out of absorption and coagulation settling tank 1 generation and mud outward transport after concentrating, dewatering of deflector type biochemistry pool 2 discharge.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff can carry out various change and amendment completely in the scope not departing from this invention technological thought.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (1)
1. an electroplating wastewater with heavy metal ions treatment unit, is characterized in that: comprise wastewater equalization pond, absorption and coagulation settling tank (1), deflector type biochemistry pool (2) and flowing sand filter tank (3);
Described wastewater equalization pond comprises equalizing tank water inlet pipe and equalizing tank rising pipe, for regulating water quality and the water yield of waste water;
Described absorption and coagulation settling tank (1) comprises adsorption zone (1-1), coagulation district (1-2) and settling region (1-3);
The middle and upper part of described adsorption zone (1-1) is provided with absorption and coagulation settling tank water inlet pipe (1-4), the top of adsorption zone is provided with sorbent material and adds metering system (1-5), and the middle part of adsorption zone is provided with adsorption zone agitator (1-6); The bottom of adsorption zone is provided with the base plate (1-7) of inclination, and the waste water after absorption reaction flows into the middle and lower part in coagulation district (1-2) along the base plate tilted;
The preparation process of sorbent material is:
1. flyash, clay and calcium carbonate are pulverized respectively, sieved, in mass ratio 3:3:4 mix and blend;
2. the mixture after being uniformly mixed and water 3:7 mixing and stirring in mass ratio, natural air drying, pulverizes, sieves;
3. the mixture after screening is calcined 60 ~ 100 minutes at 700 ~ 1200 DEG C;
4. calcined material cooled, pulverize, sieve, obtained sorbent material;
Be provided with flow-stopping plate (1-8) between described adsorption zone (1-1) and coagulation district (1-2), the bottom of flow-stopping plate (1-8) is provided with the corner of 45 degree, and corner turns to side, adsorption zone; The middle and upper part in coagulation district (1-2) is provided with coagulating agent and adds metering system (1-9), and described coagulating agent is iron(ic) chloride or ferrum sulfuricum oxydatum solutum; Coagulation district (1-2) bottom is provided with coagulation district whipping appts (1-10);
Dividing plate (1-11) is provided with between described coagulation district (1-2) and settling region (1-3), the inwall of this dividing plate and absorption and coagulation settling tank forms the waste water runner entering settling region (1-3) as waste water, the exit of settling region (1-3) is provided with absorption and coagulation settling tank triphase separator (1-12), the outlet top of settling region is provided with absorption and coagulation settling tank overfalling weir (1-13), the tapered structure of settling region bottom design, is provided with sediment discharge valve (1-14) bottom pyramidal structure; Absorption and coagulation settling tank overfalling weir (1-13) connects absorption and coagulation settling tank rising pipe, and absorption and coagulation settling tank rising pipe connects deflector type biochemistry pool water inlet pipe;
Described deflector type biochemistry pool (2) middle and upper part is cylindrical, bottom is conical structure, comprises lower current area (2-1), ascending zone (2-2) and mud district (2-3); Described lower current area (2-1) is positioned at the middle part of the cylindrical structural of deflector type biochemistry pool, for cylindrical structural, lower current area (2-1) top is provided with deflector type biochemistry pool water inlet pipe (2-4) and deflector type biochemistry pool water distributor (2-5), lower current area filler (2-6) is provided with in the middle part of lower current area, lower current area bottom is provided with lower current area aeration tube (2-7), the bottom of described lower current area is provided with traverse baffle (2-8), and the longitudinal section of described traverse baffle (2-8) is horn-like; Described ascending zone (2-2) is positioned at the periphery of lower current area (2-1), the top of traverse baffle, ascending zone filler (2-9) is provided with in the middle part of ascending zone, bottom is provided with ascending zone aeration tube (2-10), and the exit on ascending zone top is provided with deflector type biochemistry pool overfalling weir (2-11); Described mud district (2-3) is positioned at the bottom of the bottom of deflector type biochemistry pool, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve (2-12);
Described flowing sand filter tank (3) comprises flowing sand filter tank water inlet pipe (3-1) and the flowing sand filter tank rising pipe for discharging the water after process, and described flowing sand filter tank comprises water distribution area, washed-out sand district and sand filtration district, described water distribution area is positioned at the bottom in flowing sand filter tank, water distribution area is provided with flowing sand filter tank water distributor (3-2), flowing sand filter tank water distributor (3-2) connects flowing sand filter tank water inlet pipe (3-1), in order to the better effects if of wastewater treatment, concentric circles is arranged in described flowing sand filter tank water distributor (3-2), and flowing sand filter tank water distributor has downward radiation water outlet, described washed-out sand district is positioned at the center in flowing sand filter tank, for cylindrical barrel structure, cylindrical barrel structure lower ending opening is positioned at the bottommost in flowing sand filter tank, cylindrical barrel structure upper end open is positioned at the top in flowing sand filter tank, the middle part in washed-out sand district is provided with stripping tube (3-3), stripping tube (3-3) connects flowing sand filter tank gas blower (3-4) outside flowing sand filter tank, the top in washed-out sand district is provided with sand water precipitation disengaging zone, the top of sand water precipitation disengaging zone is provided with washed-out sand district overfalling weir (3-5), washed-out sand district overfalling weir (3-5) connects washed-out sand water discharge spout and deflector type biochemistry pool water inlet pipe (2-4), the bottom of sand water precipitation disengaging zone is provided with back sand passage (3-6), described sand filtration district is positioned at the periphery in washed-out sand district, sand filtration is filled with fine sand in district, top, sand filtration district is provided with sand filtration district overfalling weir (3-7), and sand filtration district overfalling weir (3-7) connects flowing sand filter tank rising pipe, the water qualified discharge after the process of flowing sand filter.
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| CN201610029893.1A CN105541035A (en) | 2016-01-16 | 2016-01-16 | Heavy metal ion-containing electroplating effluent treatment equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836938A (en) * | 2016-06-03 | 2016-08-10 | 常州大学 | Device for treating smelting wastewater containing heavy metals and fluoride ions |
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