CN108751492A - A kind of electroplating cyanic waste water processing method - Google Patents
A kind of electroplating cyanic waste water processing method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
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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
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The invention discloses a kind of electroplating cyanic waste water processing methods, include the following steps：S1, cyanide wastewater are adjusted, S2, level-one adjustment, S3, the reaction of level-one broken cyanide, S4, waste liquid coagulation, S5, waste liquid flocculation, S6, waste liquid precipitation, S7, two level adjustment, S8, the reaction of two level broken cyanide, S9, waste liquid mix soon, the reserved reaction of S10, waste liquid, S11, MCR membrane cisterna, S12, heavy metal wastewater thereby reuse former pond.The present invention using level-one broken cyanide reaction tank pre-process waste liquid, utilize two level broken cyanide reaction tank, to saturation in waste water and the secondary broken cyanide processing of untreated substance progress, and then improve the efficiency of waste water broken cyanide processing, MCR films are membranization reactor to improve the chemical reaction efficiency during this, while the waste water that can recycle that treated, and then reduce the pollution of water resource, accomplish that energy-saving and emission-reduction lower consumption, ensure that the living environment of factory's surrounding resident.
Description
Technical field
The present invention relates to electroplating cyanic waste water processing technology field, more particularly to a kind of electroplating cyanic waste water processing method.
Background technology
Cyanide wastewater is mainly derived from cyanide electroplating, and cyanide electroplating is one of common plating method, is mainly used for copper pre-plating, plating
The processes such as copper alloy.It removes and contains according to the formula of various cyanide electroplating plating solutions, in the cyanide wastewater generated during cyanide electroplating
Outside the free cyanide of severe toxicity, still with the presence of complex ions such as copper cyanogen, zinc cyanogen, so broken cyanide is needed to handle.After broken cyanide, heavy metal
Ion will also enter in waste water, therefore, in Treatment of Cyanide-containing Wastewater, should also include the processing of heavy metal ion.
Cyanide cannot be handled by methods such as conventional precipitations, it is necessary to be broken down into CO2And N2Nothing can just be become
Otherwise malicious product will contain toxic substance in waste water, and influence water quality.If waste water does not handle direct emission, Jiu Huizao
At water pollution, or the environment on factory periphery is influenced, can seriously endanger the health of surrounding population, in consideration of it, we provide
A kind of electroplating cyanic waste water processing method.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of electroplating cyanic waste water processing method.
A kind of electroplating cyanic waste water processing method in the present invention, includes the following steps：
S1, cyanide wastewater are adjusted：In the discharge of wastewater to cyanide wastewater regulating reservoir that pipe network is collected, the quenched 1-2 of waste water is then carried out
Hour, after waste water is adjusted to uniformly, into next step；
S2, level-one adjustment：It is drawn into level-one adjustment pond uniform waste water is adjusted in S1, is then added into level-one adjustment pond
Liquid NaOH, after evenly mixing, it is 10-11 that level-one, which adjusts the solution ph in pond,；
S3, the reaction of level-one broken cyanide：The waste water adjusted in pond is delivered in level-one broken cyanide reaction tank by water pump, then to level-one
NaClO is added in broken cyanide reaction tank, by blender uniform stirring 20-30 minutes；
S4, waste liquid coagulation：Waste liquid in level-one broken cyanide pond is drawn into coagulating basin, PAC coagulant is added into coagulating basin,
Uniform coagulation 1-3 hours of waste liquid in middle coagulating basin；
S5, waste liquid flocculation：It is drawn into flocculation basin using the waste liquid after uniform coagulation in pump handle S4, is added into flocculation basin
PAM flocculants, the waste liquid in flocculation basin uniformly flocculate 1-2 hours；
S6, waste liquid precipitation：Waste liquid in flocculation basin is drawn into sedimentation basin, the waste liquid in sedimentation basin stands 3-6 hours；Then
Supernatant after standing is drawn into waste liquid two level adjustment pond, is removed the sludge impurity in sedimentation basin finally by sludge pump
It is evacuated in sludge collecting pit；
S7, two level adjustment：H is added into two level adjustment pond2SO4Solution, after evenly mixing, it is 7-8 to adjust the pH value in waste liquid；
S8, the reaction of two level broken cyanide：Waste liquid in S7 is drawn into two level broken cyanide reaction tank, is added to two level broken cyanide reaction tank
NaClO, the wherein pH value in waste liquid are 10-11；
S9, waste liquid mix soon：Using the water in pump handle S7 be drawn into waste liquid soon mix pond in, to waste liquid soon mix pond in be added PAC,
Uniform coagulation 20-40 minutes of PAM coagulant, the wherein waste liquid in coagulating basin；
The reserved reaction of S10, waste liquid：Waste liquid in S8 is drawn into waste liquid reaction tank, carries out standing 1-2 hours, in case next
Step operation；
S11, MCR membrane cisterna：Waste liquid in S9 is drawn into MCR membrane cisternas, wastewater treatment 1-3 hours；
S12, heavy metal wastewater thereby reuse former pond：Supernatant in S10 is guided in heavy metal wastewater thereby reuse former pond, and then is stored up
Processed waste water is deposited, is used in order to the processing of next step.
In said program, the waste liquid ORP in the S2 is 300-350mv.
In said program, the waste liquid ORP in the S8 is 600-650mv.
The advantages of the present invention are：The present invention using level-one broken cyanide reaction tank pre-process waste liquid,
Using two level broken cyanide reaction tank, to saturation in waste water and the secondary broken cyanide processing of untreated substance progress, and then it is broken to improve waste water
The efficiency of cyanogen processing adjusts pond using level-one adjustment pond, two level, facilitates and control this in order to carry out next step operation to waste water
PH in waste liquid, and then precondition is provided for the operation of the next step of waste water, MCR films are membranization reactor, and wherein membranization is reacted
Device is a kind of novel water treatment device to grow up on the basis of MBR, is to be subject to chemical treatment technology and membrane separation process
In conjunction with improving the chemical reaction efficiency during this, while the waste water that can recycle that treated, and then reduce water resource
Pollution accomplishes that energy-saving and emission-reduction lower consumption, ensure that the living environment of factory's surrounding resident.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow chart of electroplating cyanic waste water of the present invention processing.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is further described.Following embodiment is only
For clearly illustrating technical scheme of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment one
As shown in Figure 1, a kind of electroplating cyanic waste water processing method, includes the following steps：
S1, cyanide wastewater are adjusted：In the discharge of wastewater to cyanide wastewater regulating reservoir that pipe network is collected, then quenched 1 hour of waste water, and
Waste water it is quenched uniformly after, into next step；
S2, level-one adjustment：It is drawn into level-one adjustment pond uniform waste water is adjusted in S1, is then added into level-one adjustment pond
Liquid NaOH, after evenly mixing, it is 10 that level-one, which adjusts the solution ph in pond,；
S3, the reaction of level-one broken cyanide：The waste water adjusted in pond is delivered in level-one broken cyanide reaction tank by water pump, then to level-one
NaClO is added in broken cyanide reaction tank, by blender uniform stirring 20 minutes, wherein waste liquid ORP was 300mv, in this step
Leading ion equation is：
CN- + ClO- + H2O → CNCl+2OH-,
CNCl + 2OH- →CNO- + H2O ；
S4, waste liquid coagulation：Waste liquid in level-one broken cyanide pond is drawn into coagulating basin, PAC coagulant is added into coagulating basin,
The uniform coagulation of waste liquid in middle coagulating basin 1 hour；
S5, waste liquid flocculation：It is drawn into flocculation basin using the waste liquid after uniform coagulation in pump handle S4, is added into flocculation basin
PAM flocculants, uniform flocculation 1 hour of waste liquid in flocculation basin；
S6, waste liquid precipitation：Waste liquid in flocculation basin is drawn into sedimentation basin, the waste liquid in sedimentation basin stands 3 hours；Then
Supernatant after standing is drawn into waste liquid two level adjustment pond, is removed the sludge impurity in sedimentation basin finally by sludge pump and is taken out
To sludge collecting pit；
S7, two level adjustment：H is added into two level adjustment pond2SO4Solution, after evenly mixing, it is 7 to adjust the pH value in waste liquid；
S8, the reaction of two level broken cyanide：Waste liquid in S7 is drawn into two level broken cyanide reaction tank, is added to two level broken cyanide reaction tank
NaClO, the wherein pH value in waste liquid are 10, and the leading ion equation in this step is：
2CNO-+ 3ClO- + H2O→2CO2↑+ N2↑+ 3Cl- + 2OH；
S8, waste liquid mix soon：Using the water in pump handle S7 be drawn into waste liquid soon mix pond in, to waste liquid soon mix pond in be added PAC,
The uniform coagulation of PAM coagulant, the wherein waste liquid in coagulating basin 20 minutes, wherein waste liquid ORP are 600mv；
The reserved reaction of S9, waste liquid：Waste liquid in S8 is drawn into waste liquid reaction tank, carries out standing 1 hour, in case grasping in next step
Make；
S10, MCR membrane cisterna：Waste liquid in S9 is drawn into MCR membrane cisternas, wastewater treatment 1 hour；
S11, heavy metal wastewater thereby reuse former pond：Supernatant in S10 is guided in heavy metal wastewater thereby reuse former pond, and then is stored up
Processed waste water is deposited, is used in order to the processing of next step.
Embodiment two
As shown in Figure 1, a kind of electroplating cyanic waste water processing method, includes the following steps：
S1, cyanide wastewater are adjusted：In the discharge of wastewater to cyanide wastewater regulating reservoir that pipe network is collected, then quenched 1.5 hours of waste water,
And waste water it is quenched uniformly after, into next step；
S2, level-one adjustment：It is drawn into level-one adjustment pond uniform waste water is adjusted in S1, is then added into level-one adjustment pond
Liquid NaOH, after evenly mixing, it is 10.5 that level-one, which adjusts the solution ph in pond,；
S3, the reaction of level-one broken cyanide：The waste water adjusted in pond is delivered in level-one broken cyanide reaction tank by water pump, then to level-one
NaClO is added in broken cyanide reaction tank, by blender uniform stirring 25 minutes, wherein waste liquid ORP was 300mv, in this step
Leading ion equation is：
CN- + ClO- + H2O → CNCl+2OH-,
CNCl + 2OH- →CNO- + H2O ；
S4, waste liquid coagulation：Waste liquid in level-one broken cyanide pond is drawn into coagulating basin, PAC coagulant is added into coagulating basin,
The uniform coagulation of waste liquid in middle coagulating basin 2 hours；
S5, waste liquid flocculation：It is drawn into flocculation basin using the waste liquid after uniform coagulation in pump handle S4, is added into flocculation basin
PAM flocculants, uniform flocculation 1.5 hours of waste liquid in flocculation basin；
S6, waste liquid precipitation：Waste liquid in flocculation basin is drawn into sedimentation basin, the waste liquid in sedimentation basin stands 5 hours；Then
Supernatant after standing is drawn into waste liquid two level adjustment pond, is removed the sludge impurity in sedimentation basin finally by sludge pump and is taken out
To sludge collecting pit；
S7, two level adjustment：H is added into two level adjustment pond2SO4Solution, after evenly mixing, it is 7.5 to adjust the pH value in waste liquid；
S8, the reaction of two level broken cyanide：Waste liquid in S7 is drawn into two level broken cyanide reaction tank, is added to two level broken cyanide reaction tank
NaClO, the wherein pH value in waste liquid are 10.5, and the leading ion equation in this step is：
2CNO-+ 3ClO- + H2O→2CO2↑+ N2↑+ 3Cl- + 2OH；
S9, waste liquid mix soon：Using the water in pump handle S7 be drawn into waste liquid soon mix pond in, to waste liquid soon mix pond in be added PAC,
The uniform coagulation of PAM coagulant, the wherein waste liquid in coagulating basin 30 minutes, wherein waste liquid ORP are 600mv；
The reserved reaction of S10, waste liquid：Waste liquid in S8 is drawn into waste liquid reaction tank, carries out standing 1.5 hours, in case next
Step operation；
S11, MCR membrane cisterna：Waste liquid in S9 is drawn into MCR membrane cisternas, wastewater treatment 2 hours；
S12, heavy metal wastewater thereby reuse former pond：Supernatant in S10 is guided in heavy metal wastewater thereby reuse former pond, and then is stored up
Processed waste water is deposited, is used in order to the processing of next step.
Embodiment three
As shown in Figure 1, a kind of electroplating cyanic waste water processing method, includes the following steps：
S1, cyanide wastewater are adjusted：In the discharge of wastewater to cyanide wastewater regulating reservoir that pipe network is collected, then quenched 2 hours of waste water, and
Waste water it is quenched uniformly after, into next step；
S2, level-one adjustment：It is drawn into level-one adjustment pond uniform waste water is adjusted in S1, is then added into level-one adjustment pond
Liquid NaOH, after evenly mixing, it is 11 that level-one, which adjusts the solution ph in pond,；
S3, the reaction of level-one broken cyanide：The waste water adjusted in pond is delivered in level-one broken cyanide reaction tank by water pump, then to level-one
NaClO is added in broken cyanide reaction tank, by blender uniform stirring 30 minutes, wherein waste liquid ORP was 300mv, in this step
Leading ion equation is：
CN- + ClO- + H2O → CNCl+2OH-,
CNCl + 2OH- →CNO- + H2O ；
S4, waste liquid coagulation：Waste liquid in level-one broken cyanide pond is drawn into coagulating basin, PAC coagulant is added into coagulating basin,
The uniform coagulation of waste liquid in middle coagulating basin 3 hours；
S5, waste liquid flocculation：It is drawn into flocculation basin using the waste liquid after uniform coagulation in pump handle S4, is added into flocculation basin
PAM flocculants, uniform flocculation 2 hours of waste liquid in flocculation basin；
S6, waste liquid precipitation：Waste liquid in flocculation basin is drawn into sedimentation basin, the waste liquid in sedimentation basin stands 6 hours；Then
Supernatant after standing is drawn into waste liquid two level adjustment pond, is removed the sludge impurity in sedimentation basin finally by sludge pump and is taken out
To sludge collecting pit；
S7, two level adjustment：H is added into two level adjustment pond2SO4Solution, after evenly mixing, it is 6 to adjust the pH value in waste liquid；
S8, the reaction of two level broken cyanide：Waste liquid in S7 is drawn into two level broken cyanide reaction tank, is added to two level broken cyanide reaction tank
NaClO, the wherein pH value in waste liquid are 11, and the leading ion equation in this step is：
2CNO-+ 3ClO- + H2O→2CO2↑+ N2↑+ 3Cl- + 2OH；
S9, waste liquid mix soon：Using the water in pump handle S7 be drawn into waste liquid soon mix pond in, to waste liquid soon mix pond in be added PAC,
The uniform coagulation of PAM coagulant, the wherein waste liquid in coagulating basin 40 minutes, wherein waste liquid ORP are 600mv；
The reserved reaction of S10, waste liquid：Waste liquid in S8 is drawn into waste liquid reaction tank, carries out standing 2 hours, in case in next step
Operation；
S11, MCR membrane cisterna：Waste liquid in S9 is drawn into MCR membrane cisternas, wastewater treatment 3 hours；
S12, heavy metal wastewater thereby reuse former pond：Supernatant in S10 is guided in heavy metal wastewater thereby reuse former pond, and then is stored up
Processed waste water is deposited, is used in order to the processing of next step.
The present invention using level-one broken cyanide reaction tank pre-process waste liquid, using two level broken cyanide reaction tank, in waste water
Saturation and untreated substance carry out secondary broken cyanide processing, and then improve the efficiency of waste water broken cyanide processing, in order to waste water into
Row operates in next step, adjusts pond using level-one adjustment pond, two level, facilitates the pH controlled in this waste liquid, and then be the next of waste water
Step operation provides precondition, and MCR films are membranization reactor, and wherein membranization reactor is one to grow up on the basis of MBR
Kind novel water treatment device, is to be combined chemical treatment technology and membrane separation process, improves the chemical reaction during this
Efficiency, while the waste water that can recycle that treated, and then the pollution of water resource is reduced, accomplish that energy-saving and emission-reduction lower consumption, ensures
The living environment of factory's surrounding resident.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (3)
1. a kind of electroplating cyanic waste water processing method, which is characterized in that include the following steps：
S1, cyanide wastewater are adjusted：In the discharge of wastewater to cyanide wastewater regulating reservoir that pipe network is collected, the quenched 1-2 of waste water is then carried out
Hour, after waste water is adjusted to uniformly, into next step；
S2, level-one adjustment：It is drawn into level-one adjustment pond uniform waste water is adjusted in S1, is then added into level-one adjustment pond
Liquid NaOH, after evenly mixing, it is 10-11 that level-one, which adjusts the solution ph in pond,；
S3, the reaction of level-one broken cyanide：The waste water adjusted in pond is delivered in level-one broken cyanide reaction tank by water pump, then to level-one
NaClO is added in broken cyanide reaction tank, by blender uniform stirring 20-30 minutes；
S4, waste liquid coagulation：Waste liquid in level-one broken cyanide pond is drawn into coagulating basin, PAC coagulant is added into coagulating basin,
Uniform coagulation 1-3 hours of waste liquid in middle coagulating basin；
S5, waste liquid flocculation：It is drawn into flocculation basin using the waste liquid after uniform coagulation in pump handle S4, is added into flocculation basin
PAM flocculants, the waste liquid in flocculation basin uniformly flocculate 1-2 hours；
S6, waste liquid precipitation：Waste liquid in flocculation basin is drawn into sedimentation basin, the waste liquid in sedimentation basin stands 3-6 hours；Then
Supernatant after standing is drawn into waste liquid two level adjustment pond, is removed the sludge impurity in sedimentation basin finally by sludge pump
It is evacuated in sludge collecting pit；
S7, two level adjustment：H is added into two level adjustment pond2SO4Solution, after evenly mixing, it is 7-8 to adjust the pH value in waste liquid；
S8, the reaction of two level broken cyanide：Waste liquid in S7 is drawn into two level broken cyanide reaction tank, is added to two level broken cyanide reaction tank
NaClO, the wherein pH value in waste liquid are 10-11；
S9, waste liquid mix soon：Using the water in pump handle S7 be drawn into waste liquid soon mix pond in, to waste liquid soon mix pond in be added PAC,
Uniform coagulation 20-40 minutes of PAM coagulant, the wherein waste liquid in coagulating basin；
The reserved reaction of S10, waste liquid：Waste liquid in S8 is drawn into waste liquid reaction tank, carries out standing 1-2 hours, in case next
Step operation；
S11, MCR membrane cisterna：Waste liquid in S9 is drawn into MCR membrane cisternas, wastewater treatment 1-3 hours；
S12, heavy metal wastewater thereby reuse former pond：Supernatant in S10 is guided in heavy metal wastewater thereby reuse former pond, and then is stored up
Processed waste water is deposited, is used in order to the processing of next step.
2. a kind of electroplating cyanic waste water processing method according to claim 1, which is characterized in that the waste liquid in the S2
ORP is 300-350mv.
3. a kind of electroplating cyanic waste water processing method according to claim 1, which is characterized in that the waste liquid in the S8
ORP is 600-650mv.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437434A (en) * | 2018-11-29 | 2019-03-08 | 中冶南方都市环保工程技术股份有限公司 | Processing method containing wastewater containing phenol and cyanide and system |
| CN110228865A (en) * | 2019-06-04 | 2019-09-13 | 扬州天启新材料股份有限公司 | A kind of Treatment of cyanogen-contained wastewater and integrated broken cyanide reactor tank |
| CN110436663A (en) * | 2019-07-31 | 2019-11-12 | 浙江智水环保科技有限公司 | Advance for the treatment of process of cyanide-bearing effluent |
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