CN105948227A - Cyanide-bearing wastewater treatment device and method - Google Patents
Cyanide-bearing wastewater treatment device and method Download PDFInfo
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- CN105948227A CN105948227A CN201610333629.7A CN201610333629A CN105948227A CN 105948227 A CN105948227 A CN 105948227A CN 201610333629 A CN201610333629 A CN 201610333629A CN 105948227 A CN105948227 A CN 105948227A
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- cyanogen
- cyanide
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- packed bed
- cell
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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
- C02F3/02—Aerobic processes
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a cyanide-bearing wastewater treatment device and method. The whole device is tubular and comprises three parts all of which are free to detach and assemble and are connected via flanges. A top cover is provided with a gas outlet, the middle part is a biofilter, the lower part is a filler bed with an insulating jacket layer, and meshed retainers are added into the middle and lower parts for holding immobilized cyanide-reducing cells. Corncob adsorption and biodegradation are combined in the treatment device and method, enabling efficient treatment of high-concentration cyanides and particularly the capture of gaseous cyanides through a biofilter. Reactors are simple in structure and easy to operate, processing and operating are facilitated, the reactors may be combined by serial and parallel connection, and the treatment device and method are applicable particularly to the treatment of high-concentration cyanide-bearing wastewater.
Description
Technical field
The invention belongs to biological wastewater treatment field, particularly relate to a kind of cyanogen-bearing wastewater treatment device and side
Method.
Background technology
For the process of cyanide wastewater, use Biochemical method relative to chemical method have non-secondary pollution,
Mild condition, process and control flexibly, the advantage such as operating cost is low.Due to pharmacy, pesticide, carry gold,
The waste water generally concentration in cyanogen that the industry such as gold mine tailing produce is higher, and toxicity is big, in processing procedure usually
Face the problems such as microbial cell is easy to run off, adaptation ability is weak, environmentally sensitive, can use for this solid
Surely change technology to solve.The type of the fall cyanogen bioreactor of report is varied both at home and abroad, batch-type
Reactor is most widely used.Huertas etc. use pseudomonas pseudoalcaligenes in batch reactor
Cyanide wastewater is degraded by CECT5344；Sirianuntapiboon S. etc. uses sequencing batch reactor
(SBR) processing cyanide-containing electroplating water, Cameron etc. uses mixing in two series connection sequencing batch reactors
Bacterium processes actual coke-oven effluent.Also the report of tradition anaerobic mud bed reactor it is related to, such as Gijzen
Simulation cyanide wastewater, Turan up-flow anaerobism is processed Deng with up-flow anaerobic sludge blanket (UASB)
Filtration reactor Treatment of Cyanide-containing Wastewater is also simulated.Fluid bed, packed bed and fixed bed reactors are also
By widely studied.One strain pseudomonas putida is loaded the reaction of gas-lifting type fluid bed batch by Babu et al.
In device, being fixed and cyanogen are degraded；Dictora et al. is in fixed bed reactors, with activated carbon, boiling
Stone and volcanic ash mixture can be fixed as sorbent treatment cyanide wastewater, antibacterial on these carriers
Changing, reactor ran after six months, the cyanide more than 90% can be decomposed by the microorganisms into ammonium ion,
Carbon dioxide and sulfate radical.Additionally, also on the research report of some custom design reactors, as
Sirianuntapiboon et al. processes synthesis cyanide wastewater with packing cage rotating biological contactor；Jeong etc.
People removes the COD in coal technique waste water, SCN, CN, ammonia nitrogen and total with suspended biological membrane process simultaneously
Nitrogen.
Although having had many about cyanogen biodegradation cell fixation and the research report of reactor thereof at present
Road, but these reactors are both for the process of cyanide wastewater, and do not take into account cyanide in operation
Under the conditions of problem unstable, volatile, the cyanogen in air is not then done any process, causes not
Cyanogen can be fully cleaned up.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of cyanogen-bearing wastewater treatment device and method, this
Invention can process aqueous phase cyanide and gas phase cyanide simultaneously, carries out the purification of cyanogen to greatest extent, special
It is not applicable to the improvement of the cyanide wastewater of high concentration.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
The cyanogen-bearing wastewater treatment device that the present invention provides, mainly includes reactor, and reactor is by from up to
Under three parts connect and compose, top is top cover, and middle part is biofilter, and bottom is band thermal insulation clamp
The packed bed of layer, each several part can freely split and combine, by Flange joint；Top cover is provided with gas outlet；
Biofilter bottom is provided with netted baffle plate and is placed with solidification fall cyanogen cell on it；Fill column outer layer
Encirclement has water-bath interlayer, is internally provided with netted baffle plate and layering is placed with immobilization fall cyanogen cell, fill out
Fill a top and be provided with outlet；Be provided with aeration opening and water inlet bottom packed bed, biofilter with fill out
Filling bed to be spaced from each other, gas can circulate between these two parts up and down.
Packed bed water inlet is provided with flow pump coutroi velocity, scalable hydraulic detention time, flow pump
It is circumscribed with head tank.
Reactor is column type, the material that material selection is corrosion-resistant, heat-resisting.
Aeration opening is equipped with gas distributor.
Netted baffle plate is plastic net baffle plate.
The method of cyanogen-bearing wastewater treatment device Treatment of Cyanide-containing Wastewater described above, comprise the steps: by
The immobilization fall cyanogen cell prepared loads reactor；Cyanide wastewater is continuous by peristaltic pump by head tank
Entering from bottom water inlet, waste water flows into after packed bed processes aqueous phase cyanide and discharges from outlet；Empty
Gas enters from bottom aeration opening continuously, from top after biofilter processes gas phase volatilization cyanide
Gas outlet is discharged.By the temperature in water-bath regulation reactor.
Prepare described immobilization fall cyanogen cell, select being fixed of corn cob of fragment shape, will preparation
The immobilized cell obtained loads reactor, and packed bed is filled to 2/3rds of capacity, biofiltration
Device loads completely.
In head tank, drip phosphoric acid or sodium hydroxide solution regulation packed bed pH value, control packed bed
PH value is 7.0-8.5.
Fall cyanogen cell can be bacillus cereus, pseudomonas, Bacillus alcaligenes.
There is the problem that cyanogen clean-up effect is not good enough in the method for current cyanide wastewater Biochemical method, sends out
A person of good sense establishes processing method and the device thereof of a kind of cyanide wastewater, and this treating method and apparatus combines jade
Rice wicking echos two kinds of methods of biodegradation in one, can carry out the efficient process of high concentration cyanide,
Especially by arranging biofilter to trap gas phase cyanide.
It is an advantage of the current invention that: be provided with the biofilter for gas phase, can solve because of aeration
And the waste gas discharge produced, thus carry out the purification of cyanogen to greatest extent, high concentration cyanogen waste water is removed
Cyanogen rate can reach more than 99%, and does not has gas phase to reveal；Structure of reactor is simple, easy to operate,
Being prone to processing realize and operation, each reactor can carry out connection in series-parallel combination each other, be particularly well-suited to height
The improvement of the cyanide wastewater of concentration；Select natural material corn cob as carrier to being fixed of thalline,
It is a kind of cheap and wide agricultural residue of originating, it is achieved that the treatment of wastes with processes of wastes against one another, economic and environment-friendly.
Accompanying drawing explanation
Fig. 1 is the structural representation of cyanogen-bearing wastewater treatment device.
In figure: 1 reactor, 2 top covers, 3 biofilters, 4 packed beds, 5 gas outlets, 6 water inlets,
7 aeration opening, 8 outlets, 9 head tanks, 10 water-baths.
Detailed description of the invention
The basic structure of cyanogen-bearing wastewater treatment device:
As it is shown in figure 1, the cyanogen-bearing wastewater treatment device that the present invention provides, mainly include reactor, instead
Answering device is column type, the material that material selection is corrosion-resistant, heat-resisting.Reactor is by three from top to bottom
Dividing and connect and compose, top is top cover, and middle part is biofilter, and bottom is the filling of band heat preservation sandwich layer
Bed, each several part can freely split and combine, by Flange joint；Top cover is provided with gas outlet；Biological mistake
Filter bottom is provided with plastic net baffle plate and is placed with solidification fall cyanogen cell on it；Fill column outer layer bag
It is with water-bath interlayer, is internally provided with plastic net baffle plate and layering is placed with immobilization fall cyanogen cell,
Packed bed top is provided with outlet；Being provided with aeration opening and water inlet bottom packed bed, aeration opening is equipped with gas
Body distributor；Biofilter is spaced from each other with packed bed, and gas can circulate between these two parts up and down.
Packed bed water inlet is provided with flow pump coutroi velocity, scalable hydraulic detention time, and flow pump is external
There is head tank.
The method using cyanogen-bearing wastewater treatment device Treatment of Cyanide-containing Wastewater:
The immobilization fall cyanogen cell prepared is loaded reactor；Cyanide wastewater is passed through to wriggle by head tank
Pump enters from bottom water inlet continuously, and waste water flows into after packed bed processes aqueous phase cyanide and arranges from outlet
Go out；Air enters from bottom aeration opening continuously, after biofilter processes gas phase volatilization cyanide
Discharge from gas outlet, top.By the temperature in water-bath regulation reactor.
In conjunction with above-mentioned basic structure and using method, further illustrate the present invention below by way of several examples.
Embodiment 1
With corn cob as carrier, crosscutting circular flake, cross 16 eye mesh screens and remove chip, clear with water
Wash to be placed on for several times in baking oven at 80 DEG C, dry to constant weight, exsiccator cooling.Put into subsequently
Equipped with basal medium (NaCl0.5g/L, K2HPO42g/L, (NH4)2SO42g/L, yeast extract 5g/L,
Glucose 10g/L, peptone 5g/L, pH value 8.0) triangular flask, inoculation bacillus cereus, false unit cell
Inserting after bacterium or Bacillus alcaligenes in constant temperature oscillation shaking table (120r/min, 30 DEG C) and cultivate 2 days, filtration obtains
Obtain immobilized cell, use buffer solution for cleaning.
Waste water 100mL (pH8) that cyanogen concentration is 50mg/L is loaded shaking flask, adds immobilized cell
10g, seals with plug, prevents cyanide from volatilize, is placed in reaction in 120r/min, the shaking table of 30 DEG C
45min.After reaction terminates, sample analysis, degradation rate is 98.5%.
Embodiment 2
Isolated operation packed bed reactor: by direct for top cover and packed bed Flange joint, airtight top
Gas outlet.Placing corn core immobilized cell in packed bed, cyanogen concentration is giving up containing cyanogen of 200mg/L
Water is entered by packed bed lower end water inlet continuously, discharges from packed bed upper end outlet.Water inlet pH value is adjusted
To 8.0, running temperature 30 DEG C in reactor, every 12 hours sampling and measuring water outlet cyanogen concentration.Regulate compacted
Dynamic pump makes device hydraulic detention time be 24h, and the cyanogen clearance running 5 days can be stably held in
About 99%；Hydraulic retention is reduced to 12h, and system is unstable to the treatment effect of 200mg/L cyanogen,
The cyanogen clearance of 72h has dropped below 80%.
Embodiment 3
Isolated operation biofilter reactor: only load lamellar corn cob in biofilter and fix
Changing cell, under-filled column is unloaded, and cyanide wastewater and air-flow are continuously from bottom water inlet and air inlet
Enter, discharge from packed bed upper end outlet and gas outlet, top respectively, give vent to anger and be passed through equipped with 1L 0.1%
In the absorption bottle of NaOH solution.Water inlet pH value is adjusted to 8.0, and running temperature 30 DEG C in reactor are arranged
Hydraulic detention time is 12h, and Ventilation Rate is 17mL/s, and water inlet cyanogen concentration is 200mg/L, every
Cyanogen concentration value in 12h sampling and measuring water outlet and GAS ABSORPTION liquid.After 24h runs, water outlet cyanide subtracts
Being 13.26mg/L less, gaseous phase outlet cyanide is 0, illustrates that reactor gas phase portion has moderately good
Disposal ability.
Embodiment 4
Run compound reactor: biofilter and packed bed two parts all place corn core immobilized carefully
Born of the same parents, cyanide wastewater and air-flow enter, respectively from packed bed upper end from bottom water inlet and air inlet continuously
Outlet and gas outlet, top are discharged, and give vent to anger and are passed through in the absorption bottle equipped with 1L 0.1%NaOH solution.
Water inlet pH value is 8, running temperature 30 DEG C in reactor, inhales every 12h sampling and measuring water outlet and gas
Receive cyanogen concentration value in liquid.Arranging hydraulic detention time is 24h, and inlet flow-patterm is 8.0, and Ventilation Rate is 16
ML/s, every 12h measure water outlet and the cyanogen concentration of GAS ABSORPTION liquid, highly concentrated to 450mg/L and 650mg/L
The clearance of degree cyanide all can reach 98%, runs the clearance quite stable of 48h, maintains
98%～99%.
Claims (9)
1. a cyanogen-bearing wastewater treatment device, mainly includes reactor, it is characterised in that: described reaction
Device is connected and composed by three parts from top to bottom, and top is top cover, and middle part is biofilter, bottom
Packed bed for band heat preservation sandwich layer；Top cover is provided with gas outlet；Biofilter bottom is provided with netted
Baffle plate is placed with solidification fall cyanogen cell on it；Fill the encirclement of column outer layer and have water-bath interlayer, internal setting
Having netted baffle plate layering to be placed with immobilization fall cyanogen cell, packed bed top is provided with outlet；Fill
Aeration opening and water inlet it is provided with bottom Chuan.
Cyanogen-bearing wastewater treatment device the most according to claim 1, it is characterised in that: described water inlet
Being provided with flow pump coutroi velocity at Kou, flow pump is circumscribed with head tank.
Cyanogen-bearing wastewater treatment device the most according to claim 1 and 2, it is characterised in that: described
Reactor is column type, the material that material selection is corrosion-resistant, heat-resisting.
Cyanogen-bearing wastewater treatment device the most according to claim 1 and 2, it is characterised in that: described
Aeration opening is equipped with gas distributor.
Cyanogen-bearing wastewater treatment device the most according to claim 1 and 2, it is characterised in that: described
Netted baffle plate is plastic net baffle plate.
6. utilizing the method for cyanogen-bearing wastewater treatment device Treatment of Cyanide-containing Wastewater described in claim 1, it is special
Levy and be to comprise the following steps: the immobilization fall cyanogen cell prepared is loaded reactor；Cyanide wastewater
Being entered from bottom water inlet continuously by peristaltic pump by head tank, waste water flows into packed bed and processes aqueous phase cyanogen
Discharge from outlet after compound；Air enters from bottom aeration opening continuously, processes through biofilter
Discharge from gas outlet, top after gas phase volatilization cyanide.
The method of Treatment of Cyanide-containing Wastewater the most according to claim 6, it is characterised in that prepare described solid
Fixedization fall cyanogen cell, selects being fixed of corn cob of fragment shape, the fixation cell that will prepare
Born of the same parents load reactor, and packed bed is filled to 2/3rds of capacity, and biofilter loads completely.
The method of Treatment of Cyanide-containing Wastewater the most according to claim 6, it is characterised in that: to head tank
In drip phosphoric acid or sodium hydroxide solution regulation packed bed pH value, control packed bed pH value be 7.0-8.5.
The method of Treatment of Cyanide-containing Wastewater the most according to claim 6, it is characterised in that: described fall cyanogen
Cell is bacillus cereus, pseudomonas, Bacillus alcaligenes.
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| CN201610333629.7A CN105948227A (en) | 2016-05-18 | 2016-05-18 | Cyanide-bearing wastewater treatment device and method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492329A1 (en) * | 1990-12-22 | 1992-07-01 | Hoechst Aktiengesellschaft | Process for the treatment of hydrogen sulfide, hydrogen cyanide and ammonia containing aqueous solutions |
| EP1518828A1 (en) * | 2003-09-29 | 2005-03-30 | Hochschule Niederrhein | Process and apparatus for the anodic oxidation of cyanide in aqueous solutions |
| CN101092274A (en) * | 2007-07-26 | 2007-12-26 | 长春黄金研究院 | Method for treating wastewater of containing cyanogens by using microbe |
| CN101144075A (en) * | 2006-09-15 | 2008-03-19 | 许雷 | Method for degrading pyrethrins pesticide by magnetic polyurethane foam plastic immobilized cell |
| CN101481171A (en) * | 2009-01-22 | 2009-07-15 | 中国科学院广州地球化学研究所 | Biological treatment apparatus and method for wastewater containing volatile organic matter |
| CN104755435A (en) * | 2012-09-10 | 2015-07-01 | 通用电气公司 | Method of reducing residual recalcitrant organic pollutants |
-
2016
- 2016-05-18 CN CN201610333629.7A patent/CN105948227A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492329A1 (en) * | 1990-12-22 | 1992-07-01 | Hoechst Aktiengesellschaft | Process for the treatment of hydrogen sulfide, hydrogen cyanide and ammonia containing aqueous solutions |
| EP1518828A1 (en) * | 2003-09-29 | 2005-03-30 | Hochschule Niederrhein | Process and apparatus for the anodic oxidation of cyanide in aqueous solutions |
| CN101144075A (en) * | 2006-09-15 | 2008-03-19 | 许雷 | Method for degrading pyrethrins pesticide by magnetic polyurethane foam plastic immobilized cell |
| CN101092274A (en) * | 2007-07-26 | 2007-12-26 | 长春黄金研究院 | Method for treating wastewater of containing cyanogens by using microbe |
| CN101481171A (en) * | 2009-01-22 | 2009-07-15 | 中国科学院广州地球化学研究所 | Biological treatment apparatus and method for wastewater containing volatile organic matter |
| CN104755435A (en) * | 2012-09-10 | 2015-07-01 | 通用电气公司 | Method of reducing residual recalcitrant organic pollutants |
Non-Patent Citations (2)
| Title |
|---|
| 吴向阳等: "《水污染控制工程及设备》", 31 August 2015 * |
| 杨玉: "《海悦千流（第2辑）》", 31 May 2010 * |
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Application publication date: 20160921 |
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