CN107814461A - The processing unit and method of a kind of cyanide containing wastewater - Google Patents
The processing unit and method of a kind of cyanide containing wastewater Download PDFInfo
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- CN107814461A CN107814461A CN201711110864.9A CN201711110864A CN107814461A CN 107814461 A CN107814461 A CN 107814461A CN 201711110864 A CN201711110864 A CN 201711110864A CN 107814461 A CN107814461 A CN 107814461A
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- cyanide
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- 239000002351 wastewater Substances 0.000 title claims abstract description 82
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000001556 precipitation Methods 0.000 claims abstract description 30
- 239000007787 solid Substances 0.000 claims abstract description 29
- 239000010865 sewage Substances 0.000 claims abstract description 25
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 208000014451 palmoplantar keratoderma and congenital alopecia 2 Diseases 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 17
- 238000003672 processing method Methods 0.000 claims abstract description 11
- 238000011010 flushing procedure Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004062 sedimentation Methods 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 239000006228 supernatant Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 150000003839 salts Chemical class 0.000 claims description 15
- 239000002893 slag Substances 0.000 claims description 14
- 239000005416 organic matter Substances 0.000 claims description 9
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 9
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 4
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims description 4
- 241001148470 aerobic bacillus Species 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- YALMXYPQBUJUME-UHFFFAOYSA-L calcium chlorate Chemical compound [Ca+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O YALMXYPQBUJUME-UHFFFAOYSA-L 0.000 claims description 2
- 239000010786 composite waste Substances 0.000 claims description 2
- 238000010612 desalination reaction Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims description 2
- 244000005700 microbiome Species 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 238000004821 distillation Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- -1 chlorate anions Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 206010016326 Feeling cold Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Inorganic materials [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
- C02F1/385—Treatment of water, waste water, or sewage by centrifugal separation by centrifuging suspensions
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- 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
- C02F3/28—Anaerobic digestion processes
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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of processing unit of cyanide containing wastewater and method, wherein method comprises the following steps：(1) cyanide containing wastewater enters broken cyanide reactor removal cyanide；(2) water outlet of broken cyanide reactor enters precipitation and intermediate pool carries out natural subsidence；(3) after waste water is repeatedly evaporated in triple effect evaporator, solid is discharged into Sedimentation centrifugel and carries out separation of solid and liquid；(4) ground flushing water and sanitary sewage are mixed in collecting-tank, and combined sewage is mixed to get in distribution reservoir with steam condensate (SC) and centrifuge waste water；(5) combined sewage is reacted into anaerobic tower；(6) anaerobic tower water outlet is reacted into CASS ponds；(7) supernatant in CASS ponds enters ozone pond, by ozone with thoroughly remove it is outer after the cyanide in waste water drain into sewage plant, biogas caused by anaerobic tower is collected into methane utilizing system.Processing method provided by the invention, the qualified discharge containing cyanide in high cyanide containing wastewater can be achieved, then drain into sewage plant.
Description
Technical field
The present invention relates to technical field of waste water processing, the processing unit and method of more particularly to a kind of cyanide containing wastewater.
Background technology
Cyanide is extremely toxic substance, and the life of health and livestock, fish to the mankind is all a kind of serious threat.Containing cyanogen
Waste water is divided into high cyanide containing wastewater, low cyanide wastewater, and the biochemical processing of current cyanide wastewater is used for low concentration
Wastewater treatment, and the load that can be born is small.Thus limit the biochemical treatment of cyanide wastewater.And the high concentration containing cyanogen of high concentration
The independent materializing strategy expense of waste water is too high, produces the solid dangerous waste of substantial amounts of secondary pollution.The present invention is therefore.
The content of the invention
Based on above mentioned problem, it is an object of the present invention to provide a kind of processing method of cyanide containing wastewater, and it can realize highly concentrated
Spend the qualified discharge of Cyanide in Cyanide Wastewater.
It is to solve one of the problems of the prior art, technical scheme provided by the invention：
A kind of processing unit of cyanide containing wastewater, stoste accumulator tank, the broken cyanide that it includes being sequentially connected by pipeline are anti-
Answer kettle, precipitation and intermediate pool, triple effect evaporator, Sedimentation centrifugel, distribution reservoir, anaerobic tower, CASS ponds and ozone pond, institute
State precipitation and intermediate pool is connected to precipitation solid slag bath.Further, the upstream of the regulating reservoir water inlet end is provided with grid.
Further, the water inlet end of the distribution reservoir is connected to the collecting-tank for being stored with flushing water and sanitary sewage.
Further, the distillation condensed water of the triple effect evaporator is discharged into the distribution reservoir.
Further, first added in the broken cyanide reactor calcium hypochlorite, calcium oxide reaction a period of time, after having reacted
It is passed through ozone reaction for a period of time.
Further, the sediment of the precipitation solid slag bath is handled by plate compression.
Further, between the stoste holding tank and the broken cyanide reactor, precipitation and intermediate pool and the triple effect
Elevator pump is respectively equipped with pipeline between evaporator, between the collecting-tank and the distribution reservoir.
In order to solve the problems of the prior art, the two of technical scheme provided by the invention is：
A kind of processing method of cyanide containing wastewater, it comprises the following steps：
(1) cyanide containing wastewater enters broken cyanide reactor removal cyanide；
(2) water outlet of broken cyanide reactor enters precipitation and intermediate pool carries out natural subsidence, and precipitation is discharged into precipitation solid slag bath,
Supernatant is discharged into triple effect evaporator；
(3) after waste water is repeatedly evaporated in triple effect evaporator, obtain distilling condensed water, solid mixture is discharged into sedimentation
Filtering centrifuge carries out separation of solid and liquid, produces solid salt accessory substance and centrifuge waste water；
(4) distillation condensation waste water and centrifuge waste water are mixed to get with ground flushing water, sanitary sewage into distribution reservoir and mixed
Sewage；
(5) combined sewage enters anaerobic tower, and the organic matter reaction in the anaerobic bacteria and waste water in anaerobic tower, organic matter is detested
Oxygen bacterium, which is decomposed, to be utilized, and most of polluter is converted into water and carbon dioxide, while produces biogas, finally completes gas-solid-liquid
Separation；
(6) anaerobic tower water outlet enters CASS ponds, the organic matter reaction in the aerobic bacteria and waste water in CASS ponds, reduces waste water
COD；
(7) supernatant in CASS ponds enters ozone pond, by ozone thoroughly to remove outer after the cyanide in waste water arrange
To sewage plant, biogas caused by anaerobic tower is collected into methane utilizing system.
Further, the reaction temperature that broken cyanide reactor is controlled in the step (1) is 60-62 DEG C, pH 11-12.
Further, calcium hypochlorite, calcium oxide reaction a period of time are first added in the step (1) in broken cyanide reactor
Afterwards, ozone reaction is added for a period of time, it is possible to achieve chlorate anions removes the cyanide in waste water with ozone cooperative.
Further, the reaction time of calcium hypochlorite, calcium oxide and waste water is 25-30min in the step (1), ozone
Reaction time with waste water is 5-10min.
Further, the step (2) is after broken cyanide reacts, and calcium chlorate becomes calcium chloride after reaction, simultaneously meeting
There is certain calcium chloride precipitation, the solid slag of precipitation solid slag bath is handled by plate and frame filter press press filtration.
The salt content of waste water increases, it is necessary to which by repeatedly evaporating desalination, salt becomes solid precipitation, steamed in the step (3)
Lime set of feeling cold mixes with centrifuge waste water, the salt content of composite waste is reduced to 2000-3000mg/L, reaches in sewage disposal
The tolerance range of environmental microorganism.
Further, the temperature that distribution reservoir is controlled in the step (4) is 37~39 DEG C, and pH is 7~8.
Compared with prior art, it is an advantage of the invention that：
Using technical scheme, after cyanide wastewater is first by broken cyanide, then with ozone cooperative oxidation processes, make cyanogen
Compound is oxidized to relatively low level.Then the waste water after broken cyanide and precipitation produces solid salt byproduct by triple effect evaporation, containing
The solid dangerous waste of cyanogen becomes available solid salt byproduct, reduces cost；Then by steaming caused by triple effect evaporation
Evaporate condensation waste water to mix with ground flushing water and sanitary sewage, improve the biodegradability of comprehensive wastewater, while reduce synthesis
The basicity of waste water, in order to follow-up biochemical treatment, from the qualified discharge for realizing cyanide in high cyanide containing wastewater, reduce
The secondary pollution of solid dangerous waste.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, drawings in the following description are only some embodiments of the present invention, for the common skill in this area
For art personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the processing unit of cyanide containing wastewater of the present invention.
Embodiment
Such scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are to be used to illustrate
The present invention and be not limited to limit the scope of the present invention.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, unreceipted implementation condition is usually the condition in normal experiment.
Referring to Fig. 1, for the structural representation of the embodiment of the present invention, there is provided a kind of processing unit of cyanide containing wastewater, bag
Include the stoste accumulator tank being sequentially connected by pipeline, broken cyanide reactor, precipitation and intermediate pool, triple effect evaporator, sedimentation filtration
Centrifuge, distribution reservoir, anaerobic tower, CASS ponds and ozone pond, precipitation and intermediate pool are connected to precipitation solid slag bath.
Wherein, the water inlet end of distribution reservoir is connected to the collecting-tank for being stored with flushing water and sanitary sewage.Triple effect evaporator
Distillation condensed water is discharged into the distribution reservoir.Calcium hypochlorite, calcium oxide reaction a period of time are first added in broken cyanide reactor, has been reacted
It is being passed through ozone reaction for a period of time afterwards.The sediment of precipitation solid slag bath is handled by plate compression.
Between stoste holding tank and broken cyanide reactor, precipitation and intermediate pool and triple effect evaporator between, the collecting-tank
Elevator pump is respectively equipped with pipeline between distribution reservoir.
Comprised the following steps using the processing method of said apparatus：
(1) cyanide containing wastewater enters broken cyanide reactor removal cyanide：Cyanide containing wastewater is discharged into stoste storage first
Groove stores, and is then pumped into broken cyanide reactor and reacted by elevator pump, and the reaction temperature for controlling broken cyanide reactor is 60-62 DEG C,
PH is 11-12, and broken cyanide reactor Central Plains pH containing cyanide is 1-2, first adds calcium hypochlorite, calcium oxide reaction 25-30min, adds
Enter ozone reaction 5-10min, to remove the cyanide in waste water in below 20mg/L.
(2) broken cyanide reactor water outlet gravity flow enters precipitation and intermediate pool carries out natural subsidence, and precipitation is discharged into precipitation solid
Slag bath, the solid slag of precipitation solid slag bath are handled by plate and frame filter press press filtration, and the boosted pump of supernatant is pumped into triple effect evaporator, removes
Reactant salt；
(3) obtain distilling condensed water after waste water is repeatedly evaporated in triple effect evaporator, solidliquid mixture is discharged into sedimentation
Filtering centrifuge carries out separation of solid and liquid, produces solid salt accessory substance and centrifuge waste water, and solid salt accessory substance is inorganic salts, Ran Houshou
Collection utilizes；
(4) distillation condensation waste water and centrifuge waste water are mixed to get mixed from inflow distribution reservoir with ground flushing water, sanitary sewage
Close sewage：The temperature for controlling distribution reservoir is 37~39 DEG C, and pH is 7~8, and wherein flushing waste water and sanitary sewage is discharged into collecting-tank,
Then boosted pump is pumped into distribution reservoir to give up with distillation condensation and mixed；
(5) combined sewage enters anaerobic tower, and the organic matter reaction in the anaerobic bacteria and waste water in anaerobic tower, organic matter is detested
Oxygen bacterium, which is decomposed, to be utilized, and most of polluter is converted into water and carbon dioxide, while produces biogas, finally completes gas-solid-liquid
Separation；
(6) anaerobic tower water outlet enters CASS ponds, ensure CASS ponds in aeration oxygen in water in 3mg/L or so, sludge
SV30Organic matter reaction in aerobic bacteria and waste water in 30 or so, CASS ponds, reduce the COD of waste water；
(7) supernatant in CASS ponds enters ozone pond, by ozone thoroughly to remove cyanide remaining in waste water after
Sewage plant is drained into outside, biogas caused by anaerobic tower is collected into methane utilizing system.
Exemplified by containing concentration of cyanide for 1600mg/L waste water, cyanide in the waste water clearance in broken cyanide reactor
For more than 98.75%, below 20mg/L is dropped to from 1600mg/L, 2000- is reduced to by vapo(u)rization system concentrating salt-containing amount
3000mg/L.Then below 2mg/L is dropped to from 20mg/L or so by anaerobic tower and CASS biochemical systems again, finally by smelly
Oxygen pond is handled, and removes remaining cyanide, it is ensured that the content of cyanide is in 1mg/L implemented below qualified discharges.
Cyanide containing wastewater COD concentration after the processing of broken cyanide reactor is 20000mg/L or so, and evaporation system is pumped into by pump
After system, COD degradation more than 90%, effluent COD concentration is 2000mg/L or so.Ground flushing water and sanitary sewage condense with distillation
After waste water mixing, the COD of waste water is 1000mg/L or so in distribution reservoir.Pass through COD degradation after anaerobic tower 50% or so, anaerobism
The COD concentration of reactor water outlet is 500mg/L or so, passes through COD degradation more than 50% behind CASS ponds, the COD of CASS ponds water outlet
Concentration is below 300mg/L, realizes the COD of waste water and the qualified discharge of cyanide.
The foregoing examples are merely illustrative of the technical concept and features of the invention, its object is to allow the person skilled in the art to be
Present disclosure can be understood and implemented according to this, it is not intended to limit the scope of the present invention.It is all smart according to the present invention
The equivalent transformation or modification that refreshing essence is done, should all be included within the scope of the present invention.
Claims (10)
- A kind of 1. processing unit of cyanide containing wastewater, it is characterised in that：Including be sequentially connected by pipeline stoste accumulator tank, Broken cyanide reactor, precipitation and intermediate pool, triple effect evaporator, Sedimentation centrifugel, distribution reservoir, anaerobic tower, CASS ponds and smelly Oxygen pond, the precipitation and intermediate pool are connected to precipitation solid slag bath.
- 2. the processing unit of cyanide containing wastewater according to claim 1, it is characterised in that：The water inlet end of the distribution reservoir It is connected to the collecting-tank for being stored with flushing water and sanitary sewage.
- 3. the processing unit of cyanide containing wastewater according to claim 1, it is characterised in that：The steaming of the triple effect evaporator Evaporate condensed water and be discharged into the distribution reservoir.
- 4. a kind of processing method of cyanide containing wastewater, it is characterised in that comprise the following steps：(1) cyanide containing wastewater enters broken cyanide reactor removal cyanide；(2) water outlet of broken cyanide reactor enters precipitation and intermediate pool carries out natural subsidence, and sediment is discharged into precipitation solid slag bath, on Clear liquid is discharged into triple effect evaporator；(3) after waste water is repeatedly evaporated in triple effect evaporator, obtain distilling condensed water, solidliquid mixture is discharged into sedimentation filtration Centrifuge carries out separation of solid and liquid, produces solid salt accessory substance and centrifuge waste water；(4) distill condensed water and centrifuge waste water enters distribution reservoir and is mixed to get combined sewage with ground flushing water, sanitary sewage；(5) combined sewage enters anaerobic tower, and the organic matter reaction in the anaerobic bacteria and waste water in anaerobic tower, organic matter is by anaerobic bacteria Decompose and utilize, most of polluter is converted into water and carbon dioxide, while produce biogas, finally complete gas-solid-liquid point From；(6) anaerobic tower water outlet enters CASS ponds, the organic matter reaction in the aerobic bacteria and waste water in CASS ponds, reduces waste water COD；(7) supernatant in CASS ponds enters ozone pond, by ozone with remove it is outer after the cyanide in waste water drain into sewage plant, Biogas is collected into methane utilizing system caused by anaerobic tower.
- 5. the processing method of cyanide containing wastewater according to claim 4, it is characterised in that：Controlled in the step (1) The reaction temperature of broken cyanide reactor is 60-62 DEG C, pH 11-12.
- 6. the processing method of cyanide containing wastewater according to claim 5, it is characterised in that：Broken cyanide in the step (1) Reactor Central Plains pH containing cyanide is 1-2, first add calcium hypochlorite, calcium oxide reaction a period of time, after having reacted be passed through it is smelly Oxygen reaction a period of time.
- 7. the processing method of cyanide containing wastewater according to claim 6, it is characterised in that：Time chlorine in the step (1) The reaction time of sour calcium, calcium oxide and waste water is 25-30min, and the reaction time of ozone and waste water is 5-10min.
- 8. the processing method of cyanide containing wastewater according to claim 4, it is characterised in that：The step (2) is by broken After cyanogen reaction, calcium chlorate becomes calcium chloride after reaction, while has certain calcium chloride precipitation, and precipitation solid slag bath is consolidated Slag is handled by plate and frame filter press press filtration.
- 9. the processing method of cyanide containing wastewater according to claim 4, it is characterised in that：Waste water in the step (3) Salt content increase, it is necessary to by repeatedly evaporating desalination, salt becomes solid precipitation, and evaporation condensate is mixed with centrifuge waste water, made The salt content of composite waste reaches the tolerance range of environmental microorganism in sewage disposal.
- 10. the processing method of cyanide containing wastewater according to claim 4, it is characterised in that：Controlled in the step (4) The temperature of distribution reservoir is 37~39 DEG C, and pH is 7~8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711110864.9A CN107814461A (en) | 2017-11-10 | 2017-11-10 | The processing unit and method of a kind of cyanide containing wastewater |
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| CN201711110864.9A CN107814461A (en) | 2017-11-10 | 2017-11-10 | The processing unit and method of a kind of cyanide containing wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902894A (en) * | 2019-12-16 | 2020-03-24 | 广州市真爱环保科技有限公司 | Cyanide-containing wastewater treatment system and method |
| CN110950502A (en) * | 2019-12-24 | 2020-04-03 | 惠州Tcl环境科技有限公司 | Method for cooperatively treating potassium ferricyanide-containing wastewater by utilizing ferric trichloride etching waste liquid |
| CN114644413A (en) * | 2022-03-22 | 2022-06-21 | 山东宸泽环境技术有限公司 | Treatment process for removing cyanide in wastewater by adopting ozone |
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