CN106007040A - Heavy metal wastewater treatment system and method - Google Patents
Heavy metal wastewater treatment system and method Download PDFInfo
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- CN106007040A CN106007040A CN201610594167.4A CN201610594167A CN106007040A CN 106007040 A CN106007040 A CN 106007040A CN 201610594167 A CN201610594167 A CN 201610594167A CN 106007040 A CN106007040 A CN 106007040A
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 42
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 87
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 54
- 238000004140 cleaning Methods 0.000 claims abstract description 38
- 239000004576 sand Substances 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 115
- 238000005188 flotation Methods 0.000 claims description 41
- 238000001223 reverse osmosis Methods 0.000 claims description 25
- 239000010814 metallic waste Substances 0.000 claims description 20
- 238000009298 carbon filtering Methods 0.000 claims description 18
- 239000013618 particulate matter Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 10
- 239000003463 adsorbent Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 238000011282 treatment Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000012670 alkaline solution Substances 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000003204 osmotic effect Effects 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000011001 backwashing Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 25
- 239000010865 sewage Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 239000000701 coagulant Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 3
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 210000000548 hind-foot Anatomy 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011044 quartzite Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a heavy metal wastewater treatment system which comprises a system control unit, a system state detection unit, a pretreatment system, an ultrafiltration system and an NF system. The pretreatment system comprises an adjusting tank, a floatation tank, a sand filter, a carbon filter and a heavy metal adsorber; the floatation tank is provided with a backflow dissolved gas assembly; the ultrafiltration system comprises an ultrafiltration device and ultrafiltrationequipment , the ultrafiltration equipment is composed of a plurality of ultrafiltration tubes, and a backwashing assembly is arranged in the ultrafiltration system; the NF system comprises an RO booster pump, a security filter, RO equipment and a cleaning assembly; the system state detection unit comprises a pressure gage, a flowmeter, a conductivity meter, a PH value detector and a temperature detector; the system control unit comprises a processor module and a control terminal assembly; the control terminal assembly comprises an electromagnetic valve, a pneumatic butterfly valve and an electric butterfly valve; the processor module can adjust the flow quantity and the flow direction of wastewater in the wastewater treatment system. By means of multiple filter devices, wastewater can be filtered step by step, and a good filtering effect can be achieved.
Description
Technical field
The present invention relates to technical field of sewage, more specifically, it relates to a kind of heavy metal waste water treatment system and method.
Background technology
In electroplating industry produces, often produce many industrial wastewaters containing plurality of heavy metal ion, if the most treated discharge of these waste water, it will the environment of severe contamination factory periphery.For this, prior art there is much waste water process, in particular in the processing system of heavy metal wastewater thereby, such as patent publication No. is the Chinese patent of CN105016510A, disclosing a set of for the sewage disposal system containing heavy metal containing sewage, the main method of said system is that precipitation adds absorption, although simple in construction, but achieved sewage disposal degree is the most unsatisfactory, and the water quality after process is the best.And if to obtain the sewage after the process more cleaned, then need to increase many new operations and equipment, whole sewage disposal system layer of structure so will certainly be made more complicated.Complicated layer of structure, it will substantially increase the difficulty of system maintenance, systems inspection, operation is the most inconvenient and the most easily produces bad point, and when a certain link goes wrong, whole system is required for closing down restarts, and expends huge.Additionally, for the ion concentration being in harmonious proportion in sewage in sewage disposal system, usually can injected clear water, the normal operation of auxiliary sewage disposal system in system, thus need to expend substantial amounts of cleaning water, reduce the benefit of sewage disposal.
Summary of the invention
For containing the halfway problem of heavy metal containing wastewater treatment in practice, the object of the invention one is to provide a kind of heavy metal waste water treatment system, and purpose two is to provide a kind of method of wastewater treatment based on said system.
For the heavy metal waste water treatment system in the present invention, concrete scheme is as follows:
A kind of heavy metal waste water treatment system, including system control unit, system mode detector unit and the pretreatment system arranged successively, ultrafiltration system and NF system, wherein,
Described pretreatment system includes regulating reservoir, flotation tank, sand filter, carbon filtering pool and the heavy metal adsorption device set gradually, and is provided with and recycles flotation tank waste water it is carried out the molten pneumatic module of backflow of molten gas purification in described flotation tank；
Described ultrafiltration system includes ultra filtration filter and the ultrafiltration apparatus of at least two group laid out in parallel settings, described ultrafiltration apparatus is made up of the super filter tube of many laid out in parallel, the water inlet end of many described super filter tubes is connected with the outlet of ultra filtration filter, water side is connected with NF system, is provided with the backwash assembly that after utilizing ultrafiltration system to filter, ultrafiltration apparatus is carried out by waste water in described ultrafiltration system；
Described NF system includes being sequentially communicated the RO booster pump of setting, security personnel filter, one-level RO equipment, two grades of RO equipment, is equipped with the cleaning assembly that after utilizing two grades of RO equipment to filter, one-level RO equipment, two grades of RO equipment are carried out by waste water in described one-level RO equipment, two grades of RO equipment；
Described system mode detector unit includes being arranged at the Pressure gauge on each connecting pipeline and effusion meter, and electrical conductivity table, PH value detector and the temperature monitor being arranged in NF system；
Described system control unit includes processor module and controls terminal assembly, described control terminal assembly includes electromagnetic valve, Pneumatic butterfly valve and the electric butterfly valve being arranged in each connecting pipeline, described processor module receives the detected value of system mode detector unit and controls terminal assembly action, adjusts flow and the flow direction of waste water in Waste Water Treatment.
Further, the first intermediate pool, the second intermediate pool, the 3rd intermediate pool, the 4th intermediate pool it is respectively arranged with between described flotation tank and sand filter, between described heavy metal adsorption device and ultra filtration filter, between described ultrafiltration apparatus and RO booster pump and between one-level RO equipment and two grades of RO equipment, multiple intermediate pool are equipped with the liquid level detection device being connected with processor die block signal, the sidewall of multiple intermediate pool is equipped with water inlet pipe and outlet pipe and control water inlet pipe, the control terminal assembly of outlet pipe break-make.
Further, the molten pneumatic module of described backflow includes floatation reflux pump and the dissolving being interconnected, the water inlet end of described floatation reflux pump is connected in order to carry clear water in dissolving with the bottom sidewall of flotation tank, the discharge ends of described dissolving is disposed adjacent with the waste water input port of flotation tank, is provided with Pneumatic butterfly valve between described flotation tank and floatation reflux pump, dissolving and flotation tank.
Further, it is set side by side with at least two between described first intermediate pool and sand filter and is equipped with electric butterfly valve or Pneumatic butterfly valve for the raw water pump being pumped in sand filter by the waste water in the first intermediate pool, the water inlet end of described raw water pump and water side.
Further, described backwash assembly includes the hyperfiltration reverse-rinsing pump that a water inlet end and the 3rd intermediate pool are connected, and water side with described super filter tube respectively, the water side of described hyperfiltration reverse-rinsing pump is connected utilize the waste water flushing super filter tube in the 3rd intermediate pool and be attached thereto logical pipeline.
Further, described one-level RO equipment, two grades of RO equipment include the RO high-pressure pump being connected with described security personnel's filter, and the many reverse osmosis pipes being connected with described RO high-pressure pump, many described reverse osmosis pipes form multiple reverse osmosis module of setting parallel with one another, multiple described reverse osmosis module are serially connected setting and outfan is connected with described 4th intermediate pool, and the water side of multiple described reverse osmosis pipes is provided with sampling valve.
Further, described cleaning assembly includes a cleaning water tank, described cleaning water tank is connected with the backwater pond of system, for obtaining the cleaning waste water after two grades of RO equipment filter, described cleaning water tank is communicated with a flushing water pump and a cleaning filter, it is connected with the water inlet end of many described reverse osmosiss after the cleaning cleaned water pump of waste water, cleaning filter in described cleaning water tank, between described cleaning water tank, flushing water pump, cleaning filter and reverse osmosis pipe, is equipped with Pneumatic butterfly valve or electric butterfly valve.
Further, described heavy metal adsorption device includes two acidic resins adsorbent equipments being interconnected and basic resin adsorbent equipment.
A kind of process for treating heavy-metal waste water, based on above-mentioned heavy metal waste water treatment system, comprises the following steps:
S1, will join in regulating reservoir containing the waste water of bulky grain heavy metal, and adds flocculant in backward regulating reservoir, utilizes flocculant to be agglomerated to together by the particulate matter in waste water；
S2, is drained into the waste water containing flocculant in flotation tank, utilizes the bubble in flotation tank then to be separated out on the surface that the particulate matter in waste water is lifted to flotation tank；
S3, waste water after flotation tank purifies is drained in the first intermediate pool, when its liquid level arrives predetermined altitude, waste water is drained in sand filter and carbon filtering pool, blocking during in order to prevent waste water from being got rid of by the first intermediate pool, between the first intermediate pool and sand filter, it is provided with two set raw water pumps, selects the most a set of during use；
S4, the waste water large particulate matter after sand filter and carbon filtering pool device filter significantly reduces, and is then drained into by waste water in resin absorption device, utilizes and acid goes out the particulate matter in waste water with alkaline solution further, is then drained in the second intermediate pool by waste water；
S5, when the liquid level of the second intermediate pool reaches predetermined altitude, processor module control
System controls terminal assembly and is drained in ultra filtration filter by the second intermediate pool by waste water, it is drained in ultrafiltration apparatus after once filtering, ultrafilter membrane is utilized to filter out the particulate pollutant in water further, waste water after filtration is drained in the 3rd intermediate pool, when the liquid level in the 3rd intermediate pool reaches predetermined value, the waste water in the 3rd intermediate pool is drained in NF system；
S6, carries out pressurized treatments to waste water so that it is meet the osmotic pressure condition of RO equipment, and after through RO equipment, waste water is filtered further, after one-level RO equipment, two grades of RO equipment filter, waste water is drained in reuse pool；
In above-mentioned steps S5 and S6, when the work efficiency of super filter tube or reverse osmosis pipe substantially reduces, clean ultrafiltration apparatus and one-level RO equipment, two grades of RO equipment clear water respectively from the 3rd intermediate pool and the 4th intermediate pool.
Further, in described step S2 and S3, in dissolving with water from flotation tank bottom water body, when the filter effect in sand filter and carbon filtering pool is the best, utilize air compressor machine to the bottom water-filling of sand filter Yu carbon filtering pool, it is achieved the backwash to sand filter Yu carbon filtering pool.
Beneficial effects of the present invention is as follows:
(1) by arranging multi-filtering device so that the waste water containing heavy metal ion is filtered step by step, good filter effect is finally realized；
(2) by arranging a series of intermediate pool, utilize the waste water in intermediate pool that the equipment in previous step is carried out, the most just make whole system all without the clear water outside consumption, the economic benefit that lifting waste water processes；
(3) by arranging multiple anti-cleaning device, when the filter effect of a certain equipment is the best, the result of detection is sent to processor module by system mode detector unit, is then controlled terminal assembly by processor module and adjusts the conduction mode of pipeline, is carried out the equipment that filter effect is the best；
(4) by arranging multiple pipeline structure parallel at key position, when wherein a filtering circuit interrupts, it is also possible to use other filtering circuit that waste water is filtered, it is ensured that whole Waste Water Treatment overall because of the fault of local will not work as machine；
(5) by arranging detection device on each connecting pipeline, such as Pressure gauge, effusion meter etc., the running status of real-time automatic monitoring Waste Water Treatment, the time of attendant's on-site maintenance is saved, it is ensured that the high efficiency of maintenance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of pretreatment system front section；
Fig. 2 is the schematic diagram of pretreatment system hindfoot portion；
Fig. 3 is the schematic diagram of ultrafiltration system；
Fig. 4 is the schematic diagram of one-level RO equipment；
Fig. 5 is the schematic diagram of two grades of RO equipment；
Fig. 6 is the schematic diagram of cleaning assembly；
Fig. 7 is the schematic flow sheet of sewage water treatment method of the present invention.
Accompanying drawing mark: 1, pretreatment system；11, regulating reservoir；111, former pond；112, dosing pump；113, coagulant；114, flocculant；115, pipe-line mixer；12, flotation tank；13, reflux molten pneumatic module；131, dissolving；132, floatation reflux pump；14, the first intermediate pool；15, sand filter；16, char filter；17, heavy metal adsorption device；171, acidic resins adsorbent equipment；172, basic resin adsorbent equipment；173, water sprayer；18, the second intermediate pool；19, raw water pump；20, butterfly valve；21, Pressure gauge；22, effusion meter；23, ultra filtration filter；24, ultrafiltration apparatus；241, super filter tube；25, hyperfiltration reverse-rinsing pump；26, the 3rd intermediate pool；27, RO booster pump；28, security personnel's filter；29, RO high-pressure pump；30, one-level RO equipment；31, two grades of RO equipment；301, reverse osmosis pipe；32, the 4th intermediate pool；33, is produced from Water circulation pond；34, cleaning filter；35, flushing water pump；36, water tank is cleaned.
Detailed description of the invention
Offer one is provided and can effectively reduce sewage disposal system manager's workload, improve the heavy metal waste water treatment system of the sewage disposal system efficiency of management.
Below in conjunction with embodiment and figure, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
A kind of heavy metal waste water treatment system, including system control unit, system mode detector unit and the pretreatment system 1 arranged successively, ultrafiltration system and NF system, wherein,
Pretreatment system 1 includes regulating reservoir 11, flotation tank 12, sand filter, carbon filtering pool and the heavy metal adsorption device 17 set gradually, and is provided with and recycles flotation tank 12 waste water it is carried out the molten pneumatic module of backflow 13 of molten gas purification in flotation tank 12.
As depicted in figs. 1 and 2, in such scheme, regulating reservoir 11 includes one for holding the former pond 111 containing heavy metal ion, it is provided with circulation duct between former pond 111 and flotation tank 12, wherein, in order to condense the particulate matter in water body, flocculant 114 and coagulant 113 it is injected with in connecting pipe, it is communicated with a pipe-line mixer 115 in the duct, for mixing above-mentioned flocculant 114, coagulant 113 and former water, during actual operation, coagulant 113 and flocculant 114 include aluminium polychlorid and nonionic high polymer coagulant 114, above-mentioned additive leaves in respectively and utilizes metering valve quantitatively to inject in connecting pipe in a container.
The group syllabus of the molten pneumatic module of above-mentioned backflow 13 be that the water body bottom by molten gas pond is re-injected into bottom molten gas pond after new molten gas, rely on the particulate matter in the bubble adsorbed water body that is dissolved in water body, and be raised to the surface of water body.Above-mentioned the usage amount that can reduce its exterior water body is set.It is described in further detail, floatation reflux pump 132 that the molten pneumatic module 13 that refluxes includes being interconnected and dissolving 131, the water inlet end of floatation reflux pump 132 is connected in order to carry clear water in dissolving 131 with the bottom sidewall of flotation tank 12, the discharge ends of dissolving 131 is disposed adjacent with the waste water input port of flotation tank 12, is provided with Pneumatic butterfly valve 20 between flotation tank 12 and floatation reflux pump 132, dissolving 131 and flotation tank 12.
Above-mentioned sand filter belongs to more medium filter, it it is a kind of pressure filter, the purity quartzite filtrate filled in utilizing filter, when water inlet flows through filtering layer from top to bottom, float and baregin granule in water are removed, so that the turbidity of water (NTU) and pollution index (SDI) reduce.The main material of sand filter 15 is cobblestone and quartz sand, and cobblestone is as bottom supporting layer, by slightly to thin (loading from the bottom to top), is filled to till low head fills up.
For above-mentioned carbon filter, also known as charcoal filter, it it is a kind of pressure filter.High-quality active fruit shell carbon selected by built-in filler, and bottom is quartz sand.
Heavy metal adsorption device 17 includes two acidic resins adsorbent equipments 171 being interconnected and basic resin adsorbent equipment 172.Chemical equation the most substantially is:
Fe3++3HR→FeR+3H+Ni2++2HR→NiR+2H+；
When former water enters A ion exchanger, the H+ on the various cationes contained in water and ion exchange resin is made to occur as above to react, the result of above-mentioned reaction is that the various cationes (Fe3+, Ni2+ etc.) in water are attracted on ion exchange resin, H+ on ion exchange resin is then in water, cation in water almost comprises only H+, and it is had an effect with various aniones in water and generates various acids.
The mechanism of ultrafiltration refers to by film surface mechanical grading, fenestra retardance and film surface and the comprehensive effect of fenestra absorption, based on sieving.For ultrafiltration system, as shown in Figure 3, the ultra filtration filter 23 arranged including at least two group laid out in parallel and ultrafiltration apparatus 24, ultrafiltration apparatus 24 is made up of the super filter tube 241 of many laid out in parallel, the water inlet end of many super filter tubes 241 is connected with the outlet of ultra filtration filter 23, water side is connected with NF system, is provided with the backwash assembly that after utilizing ultrafiltration system to filter, ultrafiltration apparatus 24 is carried out by waste water in ultrafiltration system.
Owing to the fault rate of super filter tube 241 is higher, by arranging two groups of ultra filtration filters 23 and ultrafiltration apparatus 24, it is ensured that when one group of device fails, another group equipment can be continuing with, it is ensured that the normal operation of system.
Above-mentioned backwash assembly includes the hyperfiltration reverse-rinsing pump 25 that a water inlet end and the 3rd intermediate pool 26 are connected, and water side with super filter tube 241 respectively, the water side of hyperfiltration reverse-rinsing pump 25 is connected utilize the waste water flushing super filter tube 241 in the 3rd intermediate pool 26 and be attached thereto logical pipeline.Utilize the water body after filtering that the body of super filter tube 241 is carried out, it is possible to reduce the demand of clear water to external world.
For NF system, as shown in Figure 4 and Figure 5, including being sequentially communicated the RO booster pump 27 of setting, security personnel filter 28,30, two grades of RO equipment 31 of one-level RO equipment, 30, two grades of RO equipment 31 of one-level RO equipment are equipped with after utilizing two grades of RO equipment 31 to filter waste water to 30, two grades of cleaning assemblies that RO equipment 31 is carried out of one-level RO equipment.
30, two grades of RO equipment 31 of one-level RO equipment include the RO high-pressure pump 29 being connected with security personnel's filter 28, and the many reverse osmosis pipes 301 being connected with RO high-pressure pump 29, many reverse osmosis pipes 301 form multiple reverse osmosis module of setting parallel with one another, multiple reverse osmosis module are serially connected setting and outfan and the 4th intermediate pool 32 is connected, and the water side of multiple reverse osmosis pipes 301 is provided with sampling valve.
As shown in Figure 6, cleaning assembly includes a cleaning water tank 36, clean water tank 36 to be connected with the backwater pond of system, for obtaining the cleaning waste water after two grades of RO equipment 31 filter, clean water tank 36 and be communicated with flushing water pump 35 and a cleaning filter 34, it is connected with the water inlet end of many reverse osmosiss after cleaning the cleaning cleaned water pump of waste water 35, cleaning filter 34 in water tank 36, cleans water tank 36, flushing water pump 35, between cleaning filter 34 and reverse osmosis pipe 301, be equipped with Pneumatic butterfly valve 20 or electric butterfly valve 20.
System mode detector unit includes Pressure gauge 21 and the effusion meter 22 being arranged on each connecting pipeline, and electrical conductivity table, PH value detector and the temperature monitor being arranged in NF system；
System control unit includes processor module and controls terminal assembly, control electromagnetic valve, Pneumatic butterfly valve 20 and electric butterfly valve 20 that terminal assembly includes being arranged in each connecting pipeline, processor module receives the detected value of system mode detector unit and controls terminal assembly action, adjusts flow and the flow direction of waste water in Waste Water Treatment.
Optimize, first intermediate pool the 14, second intermediate pool the 18, the 3rd intermediate pool the 26, the 4th intermediate pool 32 it is respectively arranged with between flotation tank 12 and sand filter, between heavy metal adsorption device 17 and ultra filtration filter 23, between ultrafiltration apparatus 24 and RO booster pump 27 and between one-level RO equipment 30 and two grades of RO equipment 31, multiple intermediate pool are equipped with the liquid level detection device being connected with processor die block signal, the sidewall of multiple intermediate pool is equipped with water inlet pipe and outlet pipe and control water inlet pipe, the control terminal assembly of outlet pipe break-make.
In order to strengthen the reliability of system, it is set side by side with at least two between first intermediate pool 14 and sand filter 15 and is equipped with electric butterfly valve 20 or Pneumatic butterfly valve 20 for the raw water pump 19 being pumped in sand filter 15 by the waste water in the first intermediate pool 14, the water inlet end of raw water pump 19 and water side.
Design based on said system, the method for wastewater treatment of the present invention, as it is shown in fig. 7, comprises following steps:
S1, joins the waste water containing bulky grain heavy metal in regulating reservoir 11, and adds flocculant 114 in backward regulating reservoir 11, utilizes flocculant 114 to be agglomerated to together by the particulate matter in waste water；
S2, is drained into the waste water containing flocculant 114 in flotation tank 12, utilizes the bubble in flotation tank 12 then to be separated out on the surface that the particulate matter in waste water is lifted to flotation tank 12；
S3, waste water after flotation tank 12 purifies is drained in the first intermediate pool 14, when its liquid level arrives predetermined altitude, waste water is drained in sand filter and carbon filtering pool, block during in order to prevent waste water from being got rid of by the first intermediate pool 14, between the first intermediate pool 14 and sand filter 15, it is provided with two set raw water pumps 19, selects the most a set of during use；
S4, waste water large particulate matter after sand filter 15 and carbon filtering pool device filter significantly reduces, then waste water is drained in resin absorption device, utilizes and acid go out the particulate matter in waste water with alkaline solution further, then waste water is drained in the second intermediate pool 18；
S5, when the liquid level of the second intermediate pool 18 reaches predetermined altitude, processor module controls terminal assembly and is drained in ultra filtration filter 23 by the second intermediate pool 18 by waste water, it is drained in ultrafiltration apparatus 24 after once filtering, ultrafilter membrane is utilized to filter out the particulate pollutant in water further, waste water after filtration is drained in the 3rd intermediate pool 26, when the liquid level in the 3rd intermediate pool 26 reaches predetermined value, the waste water in the 3rd intermediate pool 26 is drained in NF system；
S6, carries out pressurized treatments to waste water so that it is meet the osmotic pressure condition of RO equipment, and after through RO equipment, waste water is filtered further, after 30, two grades of RO equipment 31 of one-level RO equipment filter, waste water is drained in reuse pool；
In above-mentioned steps S5 and S6, when the work efficiency of super filter tube 241 or reverse osmosis pipe 301 substantially reduces, clean the clear water of ultrafiltration apparatus 24 and 30, two grades of RO equipment 31 of one-level RO equipment respectively from the 3rd intermediate pool 26 and the 4th intermediate pool 32.
In step S2 and S3, in dissolving 131 with water from flotation tank 12 bottom water body, when the filter effect in sand filter and carbon filtering pool is the best, utilize air compressor machine to the bottom water-filling of sand filter Yu carbon filtering pool, it is achieved the backwash to sand filter Yu carbon filtering pool.
Below being only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a heavy metal waste water treatment system, it is characterised in that include system control unit, system mode detector unit and pretreatment system (1), ultrafiltration system and the NF system arranged successively, wherein,
Described pretreatment system (1) includes regulating reservoir (11), flotation tank (12), sand filter, carbon filtering pool and the heavy metal adsorption device (17) set gradually, and is provided with and recycles flotation tank (12) waste water it is carried out the molten pneumatic module of the backflow (13) of molten gas purification in described flotation tank (12)；
Described ultrafiltration system includes ultra filtration filter (23) and the ultrafiltration apparatus (24) of at least two group laid out in parallel settings, described ultrafiltration apparatus (24) is made up of the super filter tube (241) of many laid out in parallel, the water inlet end of many described super filter tubes (241) is connected with the outlet of ultra filtration filter (23), water side is connected with NF system, is provided with the backwash assembly that after utilizing ultrafiltration system to filter, ultrafiltration apparatus (24) is carried out by waste water in described ultrafiltration system；
Described NF system includes being sequentially communicated the RO booster pump (27) of setting, security personnel's filter (28), one-level RO equipment (30), two grades of RO equipment (31), is equipped with the cleaning assembly that after utilizing two grades of RO equipment (31) to filter, one-level RO equipment (30), two grades of RO equipment (31) are carried out by waste water in described one-level RO equipment (30), two grades of RO equipment (31)；
Described system mode detector unit includes Pressure gauge (21) and the effusion meter (22) being arranged on each connecting pipeline, and electrical conductivity table, PH value detector and the temperature monitor being arranged in NF system；
Described system control unit includes processor module and controls terminal assembly, described control terminal assembly includes electromagnetic valve, Pneumatic butterfly valve (20) and the electric butterfly valve (20) being arranged in each connecting pipeline, described processor module receives the detected value of system mode detector unit and controls terminal assembly action, adjusts flow and the flow direction of waste water in Waste Water Treatment.
Heavy metal waste water treatment system the most according to claim 1, it is characterized in that, between described flotation tank (12) and sand filter, between described heavy metal adsorption device (17) and ultra filtration filter (23), between described ultrafiltration apparatus (24) and RO booster pump (27), and it is respectively arranged with the first intermediate pool (14) between one-level RO equipment (30) and two grades of RO equipment (31), second intermediate pool (18), 3rd intermediate pool (26), 4th intermediate pool (32), multiple intermediate pool are equipped with the liquid level detection device being connected with processor die block signal, water inlet pipe and outlet pipe and control water inlet pipe it is equipped with on the sidewall of multiple intermediate pool, the control terminal assembly of outlet pipe break-make.
Heavy metal waste water treatment system the most according to claim 1, it is characterized in that, the molten pneumatic module of described backflow (13) includes floatation reflux pump (132) and the dissolving (131) being interconnected, the water inlet end of described floatation reflux pump (132) is connected in order to conveying clear water in dissolving (131) with the bottom sidewall of flotation tank (12), the discharge ends of described dissolving (131) is disposed adjacent with the waste water input port of flotation tank (12), described flotation tank (12) and floatation reflux pump (132), Pneumatic butterfly valve (20) it is provided with between dissolving (131) and flotation tank (12).
Heavy metal waste water treatment system the most according to claim 2, it is characterized in that, it is set side by side with at least two between described first intermediate pool (14) and sand filter (15) and is equipped with electric butterfly valve (20) or Pneumatic butterfly valve (20) for the raw water pump (19) being pumped in sand filter (15) by the waste water in the first intermediate pool (14), the water inlet end of described raw water pump (19) and water side.
Heavy metal waste water treatment system the most according to claim 1, it is characterized in that, described backwash assembly includes the hyperfiltration reverse-rinsing pump (25) that a water inlet end and the 3rd intermediate pool (26) are connected, and water side with described super filter tube (241) respectively, the water side of described hyperfiltration reverse-rinsing pump (25) is connected utilize the waste water flushing super filter tube (241) in the 3rd intermediate pool (26) and be attached thereto logical pipeline.
Heavy metal waste water treatment system the most according to claim 1, it is characterized in that, described one-level RO equipment (30), two grades of RO equipment (31) include the RO high-pressure pump (29) being connected with described security personnel's filter (28), and the many reverse osmosis pipes (301) being connected with described RO high-pressure pump (29), many described reverse osmosis pipes (301) form multiple reverse osmosis module of setting parallel with one another, multiple described reverse osmosis module are serially connected setting and outfan is connected with described 4th intermediate pool (32), the water side of multiple described reverse osmosis pipes (301) is provided with sampling valve.
Heavy metal waste water treatment system the most according to claim 6, it is characterized in that, described cleaning assembly includes a cleaning water tank (36), described cleaning water tank (36) is connected with the backwater pond of system, for obtaining the cleaning waste water after two grades of RO equipment (31) are filtered, described cleaning water tank (36) is communicated with a flushing water pump (35) and a cleaning filter (34), the cleaned water pump of cleaning waste water (35) in described cleaning water tank (36), cleaning filter (34) water inlet end with many described reverse osmosiss afterwards is connected, described cleaning water tank (36), flushing water pump (35), Pneumatic butterfly valve (20) or electric butterfly valve (20) it is equipped with between cleaning filter (34) and reverse osmosis pipe (301).
Heavy metal waste water treatment system the most according to claim 6, it is characterized in that, described heavy metal adsorption device (17) includes two acidic resins adsorbent equipments (171) being interconnected and basic resin adsorbent equipment (172).
9. a process for treating heavy-metal waste water, it is characterised in that based on above-mentioned heavy metal waste water treatment system, comprise the following steps:
S1, joins the waste water containing bulky grain heavy metal in regulating reservoir (11), and adds flocculant (114) in backward regulating reservoir (11), utilizes flocculant (114) to be agglomerated to together by the particulate matter in waste water；
S2, is drained into the waste water containing flocculant (114) in flotation tank (12), and the surface utilizing the bubble in flotation tank (12) that the particulate matter in waste water is lifted to flotation tank (12) then separates out；
S3, waste water after flotation tank (12) purifies is drained in the first intermediate pool (14), when its liquid level arrives predetermined altitude, waste water is drained in sand filter and carbon filtering pool, block during in order to prevent waste water from being got rid of by the first intermediate pool (14), between the first intermediate pool (14) and sand filter (15), it is provided with two set raw water pumps (19), selects the most a set of during use；
S4, waste water large particulate matter after sand filter (15) and carbon filtering pool device filter significantly reduces, then waste water is drained in resin absorption device, utilize and acid go out the particulate matter in waste water with alkaline solution further, then waste water is drained in the second intermediate pool (18)；
S5, when the liquid level of the second intermediate pool (18) reaches predetermined altitude, processor module controls terminal assembly and is drained in ultra filtration filter (23) by the second intermediate pool (18) by waste water, it is drained in ultrafiltration apparatus (24) after once filtering, ultrafilter membrane is utilized to filter out the particulate pollutant in water further, waste water after filtration is drained in the 3rd intermediate pool (26), when the liquid level in the 3rd intermediate pool (26) reaches predetermined value, waste water in 3rd intermediate pool (26) is drained in NF system；
S6, waste water is carried out pressurized treatments so that it is meet the osmotic pressure condition of RO equipment, and after through RO equipment, waste water is filtered further, after one-level RO equipment (30), two grades of RO equipment (31) are filtered, waste water is drained in reuse pool；
In above-mentioned steps S5 and S6, when the work efficiency of super filter tube (241) or reverse osmosis pipe (301) substantially reduces, clean ultrafiltration apparatus (24) and one-level RO equipment (30), two grades of RO equipment (31) clear water respectively from the 3rd intermediate pool (26) and the 4th intermediate pool (32).
Process for treating heavy-metal waste water the most according to claim 9, it is characterized in that, in described step S2 and S3, dissolving (131) middle water from flotation tank (12) bottom water body, when the filter effect in sand filter with carbon filtering pool is the best, utilize air compressor machine to the bottom water-filling of sand filter Yu carbon filtering pool, it is achieved the backwash to sand filter Yu carbon filtering pool.
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