CN202072563U - Polychlorinated biphenyl (PCB) chromium-containing waste water reclaiming and treating system - Google Patents

Polychlorinated biphenyl (PCB) chromium-containing waste water reclaiming and treating system Download PDF

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Publication number
CN202072563U
CN202072563U CN2011201334209U CN201120133420U CN202072563U CN 202072563 U CN202072563 U CN 202072563U CN 2011201334209 U CN2011201334209 U CN 2011201334209U CN 201120133420 U CN201120133420 U CN 201120133420U CN 202072563 U CN202072563 U CN 202072563U
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solid
pipeline
water
liquid separation
pump
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CN2011201334209U
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肖应东
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Dongguan Dongyuan environmental Polytron Technologies Inc
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肖应东
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Abstract

The utility model discloses a polychlorinated biphenyl (PCB) chromium-containing waste water reclaiming and treating system, which comprises a collection pool, a reduction pool, an adjusting pool, a solid and liquid separating pool, a middle water pool, a reverse osmosis system, a lift pump, a water generating pump, a sludge pump and a pressurizing pump, wherein the reduction pool, the adjusting pool and the solid and liquid separating pool are sequentially connected; and a solid and liquid separating ultrafiltration membrane device can be rotationally arranged in the solid and liquid separating pool and comprises a water generating pipe and membranes arranged outside the water generating pipe. Negative pressure is formed between two discharging membranes of the solid and liquid separating ultrafiltration membrane device by using a water generating pump, and generated water in waste water flows into the water generating pipe through the membranes and is pumped out through the water generating pump, so the aim of separating solid and liquid is fulfilled; the reverse osmosis system is used for treating the generated water; and the treated water is discharged and reclaimed. The PCB chromium-containing waste water reclaiming and treating system has a simple process and is convenient to operate simply; waste water resources are circularly used maximally; the aim of energy conservation and emission reduction is fulfilled; and the reclaiming and treating efficiency is improved because the membranes are not easy to block.

Description

PCB chromate waste water recovery and processing system
Technical field
The utility model relates to waste water reclamation treatment system art, refers in particular to a kind of PCB chromate waste water recovery and processing system.
Background technology
Can be attended by a large amount of chromate waste waters in the production of PCB wiring board, these chromate waste waters can reclaim usefulness again through special processing, avoid the wasting of resources, thereby reduce production costs.Roughly have three kinds to what the recycling mode of PCB chromate waste water was used always at present: first kind is that the mode of RO pre-treatment is done in chemical reduction reaction+chemical precipitation+sand filtration+charcoal filter; Do the mode of RO pre-treatment for chemical reduction reaction+chemical precipitation+automatic filtration system+UF system for second kind; The third is that chemical reduction reaction+chemical precipitation+tubular membrane filtering system is done the mode of RO pre-treatment.
Above-mentioned existing three kinds of recycling modes, though can offer the effect that the user recycles the PCB chromate waste water, really has progressive, but when using, reality but finds still to have many deficiencies on himself structure and the use properties, cause existing P CB chromate waste water recovery and processing system in practical application, fail to reach best result of use and task performance, now its shortcoming be summarized as follows:
One, adopt chemical reduction reaction+chemical precipitation+sand filtration+charcoal filter to do the mode of RO pre-treatment, the problem that this method exists has: a, amount of consumption of drugs height, and floor space is big; B, sand filtration+charcoal filter exist backwash not move automatically, and filtrate is changed problems such as inconvenience.
Two, adopt chemical reduction reaction+chemical precipitation+automatic filtration system+UF system to do the mode of RO pre-treatment, the UF system adopts the inner pressed ultra-filtration membrane, has the power consumption height, and the stifled easily film of system's run duration causes cleaning frequent and system goes out problems such as water unstable.
Three, adopt chemical reduction reaction+chemical precipitation+tubular membrane filtering system to do the mode of RO pre-treatment, there is the power consumption height in this pre-treatment mode, and system's run duration blocks up problems such as film easily.
The utility model content
In view of this, the utility model is at the disappearance of prior art existence, its main purpose provides a kind of PCB chromate waste water recovery and processing system, and it can effectively solve existing PCB chromate waste water recovery and processing system and occur stifled film easily and make the inefficient problem of recycling.
For achieving the above object, the utility model adopts following technical scheme:
A kind of PCB chromate waste water recovery and processing system includes the collecting tank that is used to collect the PCB chromate waste water, being used for adding reductive agent makes the hexavalent chromium of PCB chromate waste water be reduced into the reduction pond of trivalent chromic ion, being used to add alkali makes trivalent chromic ion produce the adjustment pond of chromium hydroxide precipitation, be used for chromium hydroxide is separated and export the solid-liquid separation tank that produces water from water, be used to hold the intermediate pool of producing water, be used for carrying out the reverse osmosis system that desalination reduces specific conductivity to producing water, be used for the PCB chromate waste water is promoted and is injected into from collecting tank the lift pump in reduction pond, be used for to inject the product water pump of intermediate pool from the product water that solid-liquid separation tank is separated, be used for the sludge pump that chromium hydroxide is extracted out from solid-liquid separation tank and be used for to produce water is injected into reverse osmosis system from middle pond topping-up pump;
This reduction pond, adjustment pond and solid-liquid separation tank are communicated with successively; Be provided with solid-liquid separation ultra-filtration membrane device in this solid-liquid separation tank rotationally, the diaphragm that this solid-liquid separation ultra-filtration membrane device includes water producing pipe and links with this water producing pipe;
The input terminus of this lift pump is communicated with collecting tank by first pipeline, promotes delivery side of pump and is communicated with the reduction pond by second pipeline;
The input terminus of this product water pump is communicated with the output terminal of aforementioned water producing pipe by the 3rd pipeline, and the output terminal that produces water pump is communicated with intermediate pool by the 4th pipeline;
The input terminus of this sludge pump is by the inner bottom part of the 5th pipeline connection solid-liquid separation tank, and the mud delivery side of pump is communicated with extraneous by the 6th pipeline;
The input terminus of this topping-up pump is communicated with intermediate pool by the 7th pipeline, and the supercharging delivery side of pump is communicated with the input terminus of reverse osmosis system by the 8th pipeline.
[0008]As a kind of preferred version, described solid-liquid separation tank is a funnel type, and this adjustment pond is communicated with solid-liquid separation tank, and solid-liquid separation ultra-filtration membrane device lateral is arranged at the top of solid-liquid separation tank.
As a kind of preferred version, the input terminus of described first pipeline extend into the collecting tank from the Chi Kou of collecting tank, the output terminal of this second pipeline extend into the reduction pond from the Chi Kou in reduction pond, the output terminal of the 4th pipeline stretches into the intermediate pool from the Chi Kou in middle pond, and the 5th pipeline reaches the solid-liquid separation tank from the outer bottom of solid-liquid separation tank.
As a kind of preferred version, be provided with control valve on described first pipeline, second pipeline, the 3rd pipeline, the 4th pipeline, the 5th pipeline, the 6th pipeline, the 7th pipeline and the 8th pipeline.
The utility model compared with prior art has tangible advantage and beneficial effect, particularly, and as shown from the above technical solution:
One, produces water pump by utilizing, make the inside of the water producing pipe of solid-liquid separation ultra-filtration membrane device form negative pressure, product water in the waste water flow in the water producing pipe by face and is produced water pump and extract out, realize the purpose of chromium hydroxide and product water sepn, and cooperate and to utilize reverse osmosis system to handle back output reuse to producing water, technology is simple, and is easy and simple to handle, and make waste water resource obtain maximized recycle, energy-saving and emission-reduction; In addition, cooperate the face and the waste water that utilize solid-liquid separation ultra-filtration membrane device to cut the brush friction, make that face is not easy to stop up, improved the efficient of recycling.
Two, by cooperate adopting solid-liquid separation ultra-filtration membrane device and reverse osmosis system the PCB chromate waste water to be handled as nucleus equipment, on the one hand, make that the equipment that uses in the treating processes is less, floor space effectively reduces, and civil engineering costs also reduces relatively; On the other hand, the treating processes of this solid-liquid separation ultra-filtration membrane device and reverse osmosis system is physical treatment course, does not need to add flocculation agent, can not cause secondary pollution to water quality.
Three, by adopting solid-liquid separation ultra-filtration membrane device to be provided with rotationally to carry out solid-liquid separation, face is not easy to stop up, thereby make that product water stable water outlet is reliable, the higher chromium hydroxide of also recyclable purity has improved the recycling quality to chromate waste water greatly.
For more clearly setting forth constitutional features of the present utility model and effect, come the utility model is elaborated below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Fig. 1 is the synoptic diagram of the preferred embodiment principle of work of the utility model.
The accompanying drawing identifier declaration:
10, collecting tank 20, reduction pond
30, adjust pond 40, solid-liquid separation tank
50, intermediate pool 60, reverse osmosis system
70, solid-liquid separation ultra-filtration membrane device 71, water producing pipe
72, face 81, lift pump
82, produce water pump 83, sludge pump
84, topping-up pump 91, first pipeline
92, second pipeline 93, the 3rd pipeline
94, the 4th pipeline 95, the 5th pipeline
96, the 6th pipeline 97, the 7th pipeline
98, the 8th pipeline 101, control valve.
Embodiment:
Please refer to shown in Figure 1ly, the concrete structure that it has demonstrated the preferred embodiment of the utility model includes collecting tank 10, reduction pond 20, adjusts pond 30, solid-liquid separation tank 40, intermediate pool 50 and reverse osmosis system 60.
Wherein, this collecting tank 10 is used to collect the PCB chromate waste water, and this kind chromate waste water mainly contains trivalent chromic ion (Cr 3+) and hexavalent chromium (Cr 6+).This reduction pond 20 is used for adding the hexavalent chromium (Cr that reductive agent makes the PCB chromate waste water 6+) be reduced into trivalent chromic ion (Cr 3+).This adjustment pond 30 is used to add alkali makes trivalent chromic ion (Cr 3+) generation chromium hydroxide (Cr (OH) 3) precipitation, this adjustment pond 30 communicates with each other with aforementioned reduction pond 20.This solid-liquid separation tank 40 is used for chromium hydroxide (Cr (OH) 3) from water, separate and export product water, this solid-liquid separation tank 40 communicates with each other with aforementioned adjustment pond 30, be provided with solid-liquid separation ultra-filtration membrane device 70 in the solid-liquid separation tank 40 rotationally, this solid-liquid separation ultra-filtration membrane device 70 includes water producing pipe 71 and the face 72 that is arranged at outside the water producing pipe 71, these solid-liquid separation ultra-filtration membrane device 70 premature labor water pumps 82 the negative pressure pattern under, make that producing water enters in the water producing pipe 71 chromium hydroxide (Cr (OH) 3) be deposited on the bottom of solid-liquid separation tank 40, realize solid-liquid separation with this, in addition, this solid-liquid separation tank 40 is a funnel type, aforementioned adjustment pond 30 is communicated with the top of solid-liquid separation tank 40, and this solid-liquid separation ultra-filtration membrane device 70 is horizontally set at the top of solid-liquid separation tank 40.This intermediate pool 50 is used to hold the product water that this is separated from solid-liquid separation tank 40.This reverse osmosis system 60 is used for carrying out desalination to producing water, so that obtain purified water, with these purified water output reuses, the principle of work of this reverse osmosis system 60 is not described in detail in this principle of work to reverse osmosis system 60 for existing mature technology then.
And, further include lift pump 81, produce water pump 82, sludge pump 83 and topping-up pump 84.Wherein, this lift pump 81 is arranged between collecting tank 10 and the reduction pond 20, lift pump 81 is used for the lifting of PCB chromate waste water and is injected into reduction pond 20, the input terminus of this lift pump 81 is communicated with collecting tank 10 by first pipeline 91, the input terminus of this first pipeline 91 extend into the collecting tank 10 from the Chi Kou of collecting tank 10, the output terminal of this lift pump 81 is communicated with aforementioned reduction pond 20 by second pipeline 92, and the output terminal of this second pipeline 92 extend into the reduction pond 20 from the Chi Kou in reduction pond 20.
This product water pump 82 is arranged between aforementioned solid-liquid separation tank 40 and the intermediate pool 50, the product water that product water pump 82 is used for separating from solid-liquid separation tank 40 is injected into the intermediate pool 50, this input terminus that produces water pump 82 is communicated with aforementioned water producing pipe 71 by the 3rd pipeline 93, this output terminal that produces water pump 82 is communicated with intermediate pool 50, the four pipelines 94 by the 4th pipeline 94 output terminal extend into the intermediate pool 50 from the Chi Kou in middle pond 50.
This sludge pump 83 is arranged at outside the solid-liquid separation tank 40, and this sludge pump 83 is used for the chromium hydroxide of solid-liquid separation tank 40 bottoms (Cr (OH) 3) the precipitation extraction, the input terminus of sludge pump 83 is communicated with the inner bottom part of solid-liquid separation tank 40 by the 5th pipeline 95, and the output terminal of topping-up pump 83 is communicated with extraneous by the 6th pipeline 96.
This topping-up pump 84 is arranged between intermediate pool 50 and the reverse osmosis system 60, topping-up pump 84 is used for product water is injected into reverse osmosis system 60 with high voltage style from middle pond 50, the input terminus of topping-up pump 84 is communicated with intermediate pool 50 by the 7th pipeline 97, and the output terminal of topping-up pump 84 is communicated with the input terminus of reverse osmosis system 60 by the 8th pipeline 98.
In addition, be provided with control valve 101 on this first pipeline 91, second pipeline 92, the 3rd pipeline 93, the 3rd pipeline 94, the 5th pipeline 95, the 6th pipeline 96, the 7th pipeline 97 and the 8th pipeline 98, those control valves 101 are used for the flow of corresponding each pipeline of control.
The principle of work that present embodiment is described in detail in detail is as follows:
The principle of work of present embodiment is very simple, as shown in Figure 1, at first, the PCB chromate waste water is injected in the collecting tank 10, contains a large amount of trivalent chromic ion (Cr in this PCB chromate waste water 3+) and hexavalent chromium (Cr 6+).Then, the PCB chromate waste water is injected under the effect of lift pump 81 in the reduction pond 20, the hexavalent chromium (Cr of PCB chromate waste water 6+) under acidic conditions with dichromate ion (Cr 2O 7) 2-State exists, and adds reductive agent (NaHSO 3Or H 2SO 4Or other acid) following reaction takes place in the back:
(Cr 2O 7) 2-+14H ++6e=2Cr 3++7H 2O
Then, trivalent chromic ion (Cr 3+) enter into and adjust pond 30, in adjusting pond 30, add alkali (NaOH or other alkali), trivalent chromium (Cr 3+) after adding alkali, generate chromium hydroxide (Cr(OH) 3) precipitation:
Cr 3++3(HO) -=Cr(OH) 3
Then, Cr(OH) 3 precipitations and water flow in the solid-liquid separation tank 40 in the lump.In solid-liquid separation tank 40, produce the inside formation negative pressure that water pump 82 makes water producing pipe 71 by utilizing, and drive face 72 by 70 rotations of this solid-liquid separation ultra-filtration membrane device and constantly cut the brush friction with liquid, make that with this producing water constantly flow in the water producing pipe 71, and chromium hydroxide (Cr(OH) 3) be deposited on the bottom of solid-liquid separation tank 40, realize solid-liquid separation with this.Then, this chromium hydroxide (Cr(OH) 3) be deposited under the effect of sludge pump 83 and be drawn out of, be used to prepare chromic salts, recyclable utilization, simultaneously, the product water that enters in the water producing pipe 71 is injected in the intermediate pool 50 under the effect of producing water pump 82.Then, under the effect of topping-up pump 84, the product water in the intermediate pool 50 is injected in the reverse osmosis system 60 with highly compressed formation, utilize 60 pairs of reverse osmosis systems to produce water and carry out desalting treatment, reduce conductivity of waste water successively, water outlet can be back to use on the production line, waste water resource is fully used, energy-saving and emission-reduction.
Design focal point of the present utility model is: at first, produce water pump by utilizing, make the inside of the water producing pipe of solid-liquid separation ultra-filtration membrane device form negative pressure, product water in the waste water flow in the water producing pipe by face and is produced water pump and extract out, realizes the purpose of solid-liquid separation, and cooperates and utilize reverse osmosis system to handle back output reuse to producing water, technology is simple, easy and simple to handle, and make waste water resource obtain maximized recycle, energy-saving and emission-reduction; In addition, cooperate the face and the waste water that utilize solid-liquid separation ultra-filtration membrane device to cut the brush friction, make that face is not easy to stop up, improved the efficient of recycling.Secondly, adopt solid-liquid separation ultra-filtration membrane device and reverse osmosis system as nucleus equipment the PCB chromate waste water to be handled by cooperating, on the one hand, make that the equipment that uses in the treating processes is less, floor space effectively reduces, and civil engineering costs also reduces relatively; On the other hand, the treating processes of this solid-liquid separation ultra-filtration membrane device and reverse osmosis system is physical treatment course, does not need to add flocculation agent, can not cause secondary pollution to water quality.Moreover, by adopting solid-liquid separation ultra-filtration membrane device to be provided with rotationally to carry out solid-liquid separation, face is not easy to stop up, thereby makes that product water stable water outlet is reliable, the higher chromium hydroxide of also recyclable purity has improved the recycling quality to chromate waste water greatly.
The above, it only is preferred embodiment of the present utility model, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.

Claims (4)

1. a PCB chromate waste water recovery and processing system is characterized in that: include the collecting tank that is used to collect the PCB chromate waste water, being used for adding reductive agent makes the hexavalent chromium of PCB chromate waste water be reduced into the reduction pond of trivalent chromic ion, being used to add alkali makes trivalent chromic ion produce the adjustment pond of chromium hydroxide precipitation, be used for chromium hydroxide is separated and export the solid-liquid separation tank that produces water from water, be used to hold the intermediate pool of producing water, be used for carrying out the reverse osmosis system that desalination reduces specific conductivity to producing water, be used for the PCB chromate waste water is promoted and is injected into from collecting tank the lift pump in reduction pond, be used for to inject the product water pump of intermediate pool from the product water that solid-liquid separation tank is separated, be used for the sludge pump that chromium hydroxide is extracted out from solid-liquid separation tank and be used for to produce water is injected into reverse osmosis system from middle pond topping-up pump;
This reduction pond, adjustment pond and solid-liquid separation tank are communicated with successively; Be provided with solid-liquid separation ultra-filtration membrane device in this solid-liquid separation tank rotationally, the diaphragm that this solid-liquid separation ultra-filtration membrane device includes water producing pipe and links with this water producing pipe;
The input terminus of this lift pump is communicated with collecting tank by first pipeline, promotes delivery side of pump and is communicated with the reduction pond by second pipeline;
The input terminus of this product water pump is communicated with the output terminal of aforementioned water producing pipe by the 3rd pipeline, and the output terminal that produces water pump is communicated with intermediate pool by the 4th pipeline;
The input terminus of this sludge pump is by the inner bottom part of the 5th pipeline connection solid-liquid separation tank, and the mud delivery side of pump is communicated with extraneous by the 6th pipeline;
The input terminus of this topping-up pump is communicated with intermediate pool by the 7th pipeline, and the supercharging delivery side of pump is communicated with the input terminus of reverse osmosis system by the 8th pipeline.
2. PCB chromate waste water recovery and processing system according to claim 1, it is characterized in that: described solid-liquid separation tank is a funnel type, and this adjustment pond is communicated with solid-liquid separation tank, and solid-liquid separation ultra-filtration membrane device lateral is arranged at the top of solid-liquid separation tank.
3. PCB chromate waste water recovery and processing system according to claim 1, it is characterized in that: the input terminus of described first pipeline extend into the collecting tank from the Chi Kou of collecting tank, the output terminal of this second pipeline stretches into the Chi Kou in reduction pond, the output terminal of the 4th pipeline reaches the Chi Kou of intermediate pool, and the 5th pipeline reaches the solid-liquid separation tank from the outer bottom of solid-liquid separation tank.
4. PCB chromate waste water recovery and processing system according to claim 1 is characterized in that: be provided with control valve on described first pipeline, second pipeline, the 3rd pipeline, the 4th pipeline, the 5th pipeline, the 6th pipeline, the 7th pipeline and the 8th pipeline.
CN2011201334209U 2011-04-29 2011-04-29 Polychlorinated biphenyl (PCB) chromium-containing waste water reclaiming and treating system Expired - Lifetime CN202072563U (en)

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CN2011201334209U CN202072563U (en) 2011-04-29 2011-04-29 Polychlorinated biphenyl (PCB) chromium-containing waste water reclaiming and treating system

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Application Number Priority Date Filing Date Title
CN2011201334209U CN202072563U (en) 2011-04-29 2011-04-29 Polychlorinated biphenyl (PCB) chromium-containing waste water reclaiming and treating system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103771616A (en) * 2013-10-21 2014-05-07 广东威迪科技股份有限公司 Passivating chromium-containing wastewater treatment system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103771616A (en) * 2013-10-21 2014-05-07 广东威迪科技股份有限公司 Passivating chromium-containing wastewater treatment system and method

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ASS Succession or assignment of patent right

Owner name: DONGGUAN DONGYUAN NEW ENERGY TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: XIAO YINGDONG

Effective date: 20120517

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20120517

Address after: 523000 Guangdong Province, Dongguan city Changan Town Zhen'an road Xiao side Industrial Park No. 131 Jixian building, No. 8F-C Dongguan Dongyuan Amperex Technology Limited

Patentee after: Dongguan Dongyuan New Energy Technology Co.,Ltd.

Address before: 523000 Guangdong Province, Dongguan city Changan Town Zhen'an road Xiao side Industrial Park No. 131 Jixian building, No. 8F-C Dongguan Dongyuan Amperex Technology Limited

Patentee before: Xiao Yingdong

C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: The 523000 Guangdong international financial city of Dongguan province IT fifth R & D center of Songshan Lake high tech Industrial Development Zone, block B

Patentee after: Dongguan Dongyuan environmental Polytron Technologies Inc

Address before: The 523000 Guangdong international financial city of Dongguan province IT fifth R & D center of Songshan Lake high tech Industrial Development Zone, block B

Patentee before: DONGGUAN DONGYUAN ENVIRONMENTAL TECHNOLOGY CO., LTD.

CP03 Change of name, title or address

Address after: The 523000 Guangdong international financial city of Dongguan province IT fifth R & D center of Songshan Lake high tech Industrial Development Zone, block B

Patentee after: DONGGUAN DONGYUAN ENVIRONMENTAL TECHNOLOGY CO., LTD.

Address before: 523000 Guangdong Province, Dongguan city Changan Town Zhen'an road Xiao side Industrial Park No. 131 Jixian building, No. 8F-C Dongguan Dongyuan Amperex Technology Limited

Patentee before: Dongguan Dongyuan New Energy Technology Co.,Ltd.

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CX01 Expiry of patent term