CN110668602A - Wastewater treatment process - Google Patents

Wastewater treatment process Download PDF

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Publication number
CN110668602A
CN110668602A CN201910941155.8A CN201910941155A CN110668602A CN 110668602 A CN110668602 A CN 110668602A CN 201910941155 A CN201910941155 A CN 201910941155A CN 110668602 A CN110668602 A CN 110668602A
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China
Prior art keywords
wastewater
tank
medicament
treated
pump
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Pending
Application number
CN201910941155.8A
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Chinese (zh)
Inventor
殷举维
代平
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DONGGUAN CITY UNIPARK PACKING CO LTD
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DONGGUAN CITY UNIPARK PACKING CO LTD
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Priority to CN201910941155.8A priority Critical patent/CN110668602A/en
Publication of CN110668602A publication Critical patent/CN110668602A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—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
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • 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
    • C02F2101/30—Organic compounds

Abstract

The invention relates to a wastewater treatment process, which comprises the following steps: the wastewater flows automatically, enters a wastewater pool for collection and is treated in a centralized way; conveying the wastewater in the wastewater pool to a coagulation oxidation tank through a lifting pump, introducing a first medicament and a second medicament into the coagulation oxidation tank, and fully stirring the first medicament, the second medicament and the wastewater through stirring to remove organic matters and chromaticity; automatically overflowing the treated wastewater to a flocculation tank, and introducing a third medicament into the flocculation tank for flocculation treatment; conveying the treated wastewater to a filter press through a diaphragm pump for solid-liquid separation; the treated wastewater automatically flows to a neutralization tank, and a fourth medicine is introduced into the neutralization tank for neutralization treatment; overflowing the treated wastewater to a temporary storage tank; conveying the wastewater in the temporary storage tank to a carbon filter tank through a centrifugal pump for removing chromaticity and filtering suspended matters; the treated wastewater automatically flows into a clean water tank for temporary storage. The invention has the effect of reducing water pollution.

Description

Wastewater treatment process
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a wastewater treatment process.
Background
In the process of daily life, the carton is usually used for containing articles, so that a large amount of cartons need to be prepared. In the process of preparing the carton, a large amount of waste water is inevitably generated, and the waste water is water-based ink waste water and has the characteristics of high concentration, high suspended matters, poor biodegradability and the like.
The above prior art solutions have the following drawbacks: if the waste water is not treated and is discharged into a river channel, the waste water of the water-based ink pollutes the environment.
Disclosure of Invention
The invention aims to provide a wastewater treatment process, which is used for treating wastewater and has the effect of protecting the environment.
The above object of the present invention is achieved by the following technical solutions:
a wastewater treatment process comprising the steps of:
a: the wastewater flows automatically, enters a wastewater pool for collection and is treated in a centralized way;
b: conveying the wastewater in the wastewater pool to a coagulation oxidation tank through a lifting pump, introducing a first medicament and a second medicament into the coagulation oxidation tank, and fully stirring the first medicament, the second medicament and the wastewater through stirring to remove organic matters and chromaticity;
c: automatically overflowing the wastewater treated in the step B to a flocculation tank, and introducing a third medicament into the flocculation tank for flocculation treatment;
d: c, conveying the wastewater treated in the step C to a filter press through a diaphragm pump for solid-liquid separation;
e: d, the wastewater treated in the step D flows into a neutralization tank automatically, a fourth medicine is introduced into the neutralization tank for neutralization treatment, a pH tester connected to the neutralization tank is observed, and the pH value of the wastewater is adjusted to be in a range of 6-9;
f: e, overflowing the wastewater treated in the step E to a temporary storage tank;
g: conveying the wastewater in the temporary storage tank to a carbon filter tank through a centrifugal pump for removing chromaticity and filtering suspended matters;
h: and G, automatically flowing the wastewater treated in the step G into a clean water tank for temporary storage.
By adopting the technical scheme, the wastewater is treated in a centralized manner by the wastewater tank and then is conveyed into the coagulation oxidation tank through the lifting pump, the wastewater is fully reacted with the first medicament and the second medicament, and most organic matters and chromaticity in the wastewater are removed; the treated wastewater flows into a flocculation tank, and the wastewater fully reacts with a third medicament to form coarse and dense flocs of suspended matters in the wastewater; pumping the treated wastewater into a filter press through a diaphragm pump, and carrying out solid-liquid separation treatment; the wastewater treated by the filter press flows to a neutralization tank, the pH value of the water quality is adjusted by a fourth medicament, and then the wastewater flows to a temporary storage tank; carry to carbon canister through the waste water of centrifugal pump in with the jar of keeping in, further get rid of the colourity through active carbon adsorption to filter remaining suspended solid, the waste water inflow clean water basin that flows out at last, and the waste water in the clean water basin is through handling, and discharge or reutilization all can.
The invention is further configured to: and in the step B, conveying the wastewater to a pipeline mixer through a lifting pump, adding a first medicament and a second medicament into the pipeline mixer to be mixed with the wastewater, and enabling the mixture to flow into a coagulation oxidation tank after being fully mixed.
Through adopting above-mentioned technical scheme, waste water, first medicament and second medicament mix the back at the pipe-line mixer at first, and then together flow into in the oxidation jar that congeals and continue mixing to make the mixture more abundant.
The invention is further configured to: the first medicament is specifically ferrous sulfate, the mass concentration of the first medicament is within the range of 20-25%, and the ferrous sulfate temporarily stored in the coagulant tank is added into the pipeline mixer through a ferrous sulfate metering pump; the second agent is specifically hydrogen peroxide, the concentration of the second agent is 27.5%, and the hydrogen peroxide temporarily stored in the oxidant tank is added into the pipeline mixer through a hydrogen peroxide metering pump.
By adopting the technical scheme, the concentration of the first medicament and the second medicament is controlled, and the condition that the first medicament and the second medicament are excessive or small in amount is reduced, so that the problem of poor organic matter and chromaticity removing effect is caused.
The invention is further configured to: the third medicament is specifically PAM, the mass concentration of the third medicament is in the range of 0.08-0.1%, and the PAM temporarily stored in the flocculating agent tank is added into the flocculating tank through a flocculating agent metering pump.
Through adopting above-mentioned technical scheme, the volume of control third medicament to make the suspended solid in the waste water form thick, closely knit wadding, make the effect of flocculation better.
The invention is further configured to: the fourth agent is specifically sodium hydroxide, the mass concentration of the fourth agent is 10%, and the sodium hydroxide temporarily stored in the alkali liquor tank is added into the neutralization tank through an alkali liquor metering pump.
By adopting the technical scheme, the amount of the fourth medicament is controlled, so that the wastewater and the sodium hydroxide solution are fully reacted, and the wastewater is prevented from being over-acid or over-alkali.
The invention is further configured to: and D, before the wastewater automatically flows to a wastewater tank in the step A, the wastewater is treated by a grating fence to remove larger suspended matters or floating matters.
Through adopting above-mentioned technical scheme, before waste water collection, when there is great suspended solid or floater in the hypothesis waste water, can play coarse filtration's effect through the check fence, reduce that great suspended solid or floater block up or waste subsequent medicament.
The invention is further configured to: in step B, the flow rate of the wastewater is controlled by the lift pump, so that the wastewater has sufficient reaction time with the first medicament and the second medicament.
Through adopting above-mentioned technical scheme, the flow of waste water can be controlled to the elevator pump to the reaction time of control waste water and first medicament, second medicament makes waste water, first medicament and second medicament intensive mixing in advance.
The invention is further configured to: and D, setting the air pressure of the diaphragm pump in the step D within the range of 0.2MPa to 0.4 MPa.
By adopting the technical scheme, the air pressure of the diaphragm pump is set in the range of 0.2MPa to 0.4MPa, and when the air pressure of the diaphragm pump is insufficient, the diaphragm pump cannot pump water; when the air pressure of the diaphragm pump is too high, the diaphragm and the pipe are easily damaged, resulting in a case of air leakage.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the wastewater is treated in a centralized manner by the wastewater pool and then is conveyed into the coagulation oxidation tank through the lifting pump, the wastewater is fully reacted with the first medicament and the second medicament, and most organic matters and chromaticity in the wastewater are removed; the treated wastewater flows into a flocculation tank, and the wastewater fully reacts with a third medicament to form coarse and dense flocs of suspended matters in the wastewater; pumping the treated wastewater into a filter press through a diaphragm pump, and carrying out solid-liquid separation treatment; the wastewater treated by the filter press flows to a neutralization tank, the pH value of the water quality is adjusted by a fourth medicament, and then the wastewater flows to a temporary storage tank; conveying the wastewater in the temporary storage tank to a carbon filter tank through a centrifugal pump, further removing chromaticity through activated carbon adsorption, filtering residual suspended matters, and finally flowing the wastewater into a clean water tank, wherein the wastewater in the clean water tank is treated and can be discharged or recycled;
2. the waste water, the first medicament and the second medicament are firstly mixed in the pipeline mixer and then are converged into the coagulation oxidation tank together to be continuously mixed, so that the mixing is more sufficient.
Drawings
FIG. 1 is a flow chart of a wastewater treatment process of this example.
In the figure, 1, a wastewater tank; 2. a coagulation oxidation tank; 3. a flocculation tank; 31. a flocculant tank; 4. a filter press; 5. a neutralization tank; 51. an alkali liquor tank; 6. a temporary storage tank; 7. a carbon canister; 8. a clean water tank; 9. a pipeline mixer; 91. a coagulant tank; 92. an oxidant tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the wastewater treatment process disclosed in this embodiment includes the following steps:
a: the wastewater flows automatically and enters a wastewater pool 1 for collection and centralized treatment.
In the process of actual factory production, suspended matters or floating matters with larger particles may exist in the wastewater, so that the wastewater needs to be subjected to coarse filtration treatment through the grating fence before entering the wastewater tank 1, and the subsequent increase of the dosage of the medicament is prevented.
B: carry the waste water in the wastewater disposal basin 1 to coagulating oxidation tank 2 through the elevator pump, let in first medicament and second medicament in toward coagulating oxidation tank 2, carry out intensive mixing to first medicament, second medicament and waste water through the stirring, get rid of the processing of organic matter and colourity.
And in the step B, the wastewater is conveyed to the pipeline mixer 9 through the lifting pump, and meanwhile, the first medicament and the second medicament are added into the pipeline mixer 9 to be mixed with the wastewater, and the mixture flows into the coagulation oxidation tank 2 after being fully mixed. Then when waste water, first medicament and second medicament get into in coagulating oxidation jar 2, be equivalent to the mixing of second time to make the reaction more abundant, organic matter and the colourity in the waste water of ability better removal.
In the process, the lifting pump is electrically connected with the PLC and is controlled by the PLC, so that the flow of the waste water is controlled by the lifting pump, and the waste water has sufficient reaction time with the first medicament and the second medicament.
The mass concentration of the first medicament is in the range of 20-25%, and the first medicament is ferrous sulfate. For example, 100L of the first chemical agent with a mass concentration of 20% is prepared, and first, about 60L of water is added into the coagulant tank 91, stirring is started, 20kg of ferrous sulfate powder is weighed, uniformly and slowly put into a small amount of water, stirred until the ferrous sulfate powder is completely dissolved, and then, water is continuously added for dilution until the total volume of the solution is 100L.
In the dosing process, the ferrous sulfate temporarily stored in the coagulant tank 91 is dosed to the pipeline mixer 9 by the ferrous sulfate metering pump.
The concentration of the second agent is 27.5%, the second agent is specifically hydrogen peroxide, and the hydrogen peroxide temporarily stored in the oxidant tank 92 is added to the pipeline mixer 9 through a hydrogen peroxide metering pump.
The ferrous sulfate metering pump and the hydrogen peroxide metering pump are respectively and electrically connected with the PLC and controlled by the PLC.
C: the wastewater treated in the step B automatically overflows to a flocculation tank 3, and a third medicament is introduced into the flocculation tank 3 for flocculation treatment;
the mass concentration of the third agent is in the range of 0.08% to 0.1%, and the third agent is specifically PAM. For example, 100L of flocculant with a mass concentration of 0.1% is prepared, and because the preparation concentration is low, the volume of PAM in the solution is small and negligible, 80L of water is directly added into the flocculant tank 31, stirring is started, 100g of PAM powder is weighed, the flocculant is slowly, uniformly and slightly added into the water, stirring is continued until the powder is completely dissolved, and water is continuously added to dilute the flocculant to 100L. It should be noted that since the dissolution rate of PAM is extremely slow, a small amount of PAM must be added slowly to avoid agglomeration and make dissolution difficult, and therefore a slow addition time of 5min is recommended.
The in-process of adding the medicine will be kept in PAM of flocculating agent jar 31 through the flocculating agent measuring pump and add the medicine to flocculation tank 3, and the flocculating agent measuring pump is connected with the PLC electricity, receives PLC's control.
D: and D, conveying the wastewater treated in the step C to a filter press 4 through a diaphragm pump for solid-liquid separation.
The air pressure of the diaphragm pump is set in the range of 0.2MPa to 0.4MPa, and when the air pressure is insufficient, the diaphragm pump is easy to stop working; when the air pressure is too high, the membrane or the pipeline is easily damaged.
The sludge after solid-liquid separation is transported outside, the filter press 4 mainly carries out the solid-liquid separation process, and after each work is finished, the filter cloth must be cleaned once, so that no residue is left on the surface of the filter cloth. When the filter cloth is hardened, the filter cloth can be neutralized by using corresponding weak acid or weak base, and the performance of the filter cloth is improved.
E: d, the wastewater treated in the step D flows to a neutralization tank 5 automatically, a fourth medicine is introduced into the neutralization tank 5 for neutralization treatment, a pH tester connected to the neutralization tank 5 is observed, and the pH value of the wastewater is adjusted to be in a range of 6-9;
the mass concentration of the fourth medicament is 10%, and the fourth medicament is specifically sodium hydroxide. For example, 100L of the fourth agent with a mass concentration of 10% is prepared, 60L of water is added into the alkali liquor tank 51, stirring is started, 20KG alkali tablets are weighed and slowly poured into the alkali liquor tank 51, stirring is carried out until the alkali tablets are completely dissolved, and water is continuously added for dilution to 100L.
In the process of adding the chemicals, the sodium hydroxide temporarily stored in the lye tank 51 is added to the neutralization tank 5 by the lye metering pump, and the lye metering pump is electrically connected with the PLC and controlled by the PLC.
F: e, overflowing the wastewater treated in the step E to a temporary storage tank 6;
g: conveying the wastewater in the temporary storage tank 6 to a carbon filter tank 7 through a centrifugal pump for removing chromaticity and filtering suspended matters;
h: and G, automatically flowing the wastewater treated in the step G into a clean water tank 8 for temporary storage.
Before the wastewater is treated, a small sample experiment is firstly carried out, so as to determine the actual steps of the treatment process, and various medicaments are prepared according to the method.
Taking 1L of wastewater sample, adding 4ml of 25% ferrous sulfate, stirring, adding 1ml of hydrogen peroxide after complete dissolution, standing for 1h after uniform stirring, observing the color of supernatant, if the color is reddish or the color of other printing ink is changed, indicating that the amount of ferrous sulfate is too small, adding 0.5g of ferrous sulfate, and correspondingly adding 0.5ml of hydrogen peroxide; if the color of the supernatant is yellow, the amount of the ferrous sulfate is too much, the amount is reduced by 0.5g, and meanwhile, the amount of the hydrogen peroxide is correspondingly reduced by 0.5 ml; if the color of the supernatant is colorless, the dosage of the medicament is proper.
Slowly adding 10% sodium hydroxide solution to adjust pH to 6, standing for 10min, observing the color of the supernatant, if the color is colorless, continuously adding a small amount of sodium hydroxide to adjust pH to 7, and if the supernatant is colorless, setting the pH value of the equipment to be 7; if the color of the ink turns slightly red or the color of other ink is slightly red, which indicates that a certain coloring material existing in the waste water is dissolved under neutral or alkaline conditions, the pH value of the device is set to be 6; if the color turns red or the color of other printing ink is obvious and exceeds the acceptable color value of the discharged water, a standby process is selected, and the conditions of filtering and then adjusting the pH value are adopted. For the above reasons, the present example directly adopts the case of filtering and then adjusting the pH.
Adding 5ml of 0.1% PAM solution into 1L of wastewater sample after the pH value is adjusted, adding 5mg of PAM solution into each liter of wastewater, slowly stirring for 30s, standing for 5min, observing the size of generated flocs, and if the flocs grow larger and settle rapidly, adding an appropriate amount of PAM; if the floc is basically unchanged and the sedimentation is slow, increasing the amount of PAM, and controlling the addition amount within 10 mg/L; if the floc floats upwards and is difficult to settle, the amount of PAM is reduced.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (8)

1. A wastewater treatment process is characterized by comprising the following steps:
a: the wastewater flows automatically, enters a wastewater pool (1) for collection and is treated in a centralized way;
b: conveying the wastewater in the wastewater pool (1) to a coagulation oxidation tank (2) through a lifting pump, introducing a first medicament and a second medicament into the coagulation oxidation tank (2), and fully stirring the first medicament, the second medicament and the wastewater through stirring to remove organic matters and chromaticity;
c: the wastewater treated in the step B automatically overflows to a flocculation tank (3), and a third medicament is introduced into the flocculation tank (3) for flocculation treatment;
d: c, conveying the wastewater treated in the step C to a filter press (4) through a diaphragm pump for solid-liquid separation;
e: d, the wastewater treated in the step D flows to a neutralization tank (5) automatically, a fourth medicine is introduced into the neutralization tank (5) for neutralization treatment, a pH tester connected to the neutralization tank (5) is observed, and the pH value of the wastewater is adjusted to be within the range of 6-9;
f: e, overflowing the wastewater treated in the step E to a temporary storage tank (6);
g: conveying the wastewater in the temporary storage tank (6) to a carbon filter tank (7) through a centrifugal pump for removing chromaticity and filtering suspended matters;
h: and G, automatically flowing the wastewater treated in the step G into a clean water tank (8) for temporary storage.
2. The wastewater treatment process according to claim 1, characterized in that: and in the step B, the wastewater is conveyed to the pipeline mixer (9) through the lifting pump, meanwhile, the first medicament and the second medicament are added into the pipeline mixer (9) to be mixed with the wastewater, and the mixture flows into the coagulation oxidation tank (2) after being fully mixed.
3. A process for the treatment of wastewater according to claim 2, characterized in that: the first medicament is specifically ferrous sulfate, the mass concentration of the first medicament is within the range of 20-25%, and the ferrous sulfate temporarily stored in a coagulant tank (91) is fed into a pipeline mixer (9) through a ferrous sulfate metering pump; the second agent is specifically hydrogen peroxide, the concentration of the second agent is 27.5%, and the hydrogen peroxide temporarily stored in the oxidant tank (92) is added into the pipeline mixer (9) through a hydrogen peroxide metering pump.
4. The wastewater treatment process according to claim 1, characterized in that: the third medicament is specifically PAM, the mass concentration of the third medicament is in the range of 0.08-0.1%, and the PAM temporarily stored in the flocculating agent tank (31) is added into the flocculation tank (3) through a flocculating agent metering pump.
5. The wastewater treatment process according to claim 1, characterized in that: the fourth medicament is specifically sodium hydroxide, the mass concentration of the fourth medicament is 10%, and the sodium hydroxide temporarily stored in the lye tank (51) is added into the neutralization tank (5) through a lye metering pump.
6. The wastewater treatment process according to claim 1, characterized in that: and (B) before the wastewater flows to the wastewater tank (1) automatically in the step (A), the wastewater is treated by removing larger suspended matters or floating matters through the grating fence.
7. The wastewater treatment process according to claim 1, characterized in that: in step B, the flow rate of the wastewater is controlled by the lift pump, so that the wastewater has sufficient reaction time with the first medicament and the second medicament.
8. The wastewater treatment process according to claim 1, characterized in that: and D, setting the air pressure of the diaphragm pump in the step D within the range of 0.2MPa to 0.4 MPa.
CN201910941155.8A 2019-09-30 2019-09-30 Wastewater treatment process Pending CN110668602A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141318A1 (en) * 2001-08-28 2003-03-27 Friedrich Binder Gmbh & Co Kg Treatment of cyanide-containing waste water comprises at least two oxidation steps performed at acidic pH separated by a decomposition step performed at alkaline pH
JP2010094647A (en) * 2008-10-20 2010-04-30 Sumitomo Metal Mining Co Ltd Wastewater treatment system and wastewater treatment method using the same
CN203065291U (en) * 2013-02-06 2013-07-17 厦门仲欧环保科技有限公司 Closed cycle treatment system for paint-spraying wastewater
CN106587441A (en) * 2017-01-22 2017-04-26 天津大学 Treating and recycling device for wastewater from iron and steel enterprises and technique
CN106745961A (en) * 2016-11-25 2017-05-31 中冶赛迪工程技术股份有限公司 A kind of method and system of coking wastewater deep treatment decarburization decolouring decyanation
CN109437482A (en) * 2018-11-29 2019-03-08 天津市联合环保工程设计有限公司 A kind of the efficient process system and its processing method of pharmaceutical industry production of raw medicine organic wastewater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141318A1 (en) * 2001-08-28 2003-03-27 Friedrich Binder Gmbh & Co Kg Treatment of cyanide-containing waste water comprises at least two oxidation steps performed at acidic pH separated by a decomposition step performed at alkaline pH
JP2010094647A (en) * 2008-10-20 2010-04-30 Sumitomo Metal Mining Co Ltd Wastewater treatment system and wastewater treatment method using the same
CN203065291U (en) * 2013-02-06 2013-07-17 厦门仲欧环保科技有限公司 Closed cycle treatment system for paint-spraying wastewater
CN106745961A (en) * 2016-11-25 2017-05-31 中冶赛迪工程技术股份有限公司 A kind of method and system of coking wastewater deep treatment decarburization decolouring decyanation
CN106587441A (en) * 2017-01-22 2017-04-26 天津大学 Treating and recycling device for wastewater from iron and steel enterprises and technique
CN109437482A (en) * 2018-11-29 2019-03-08 天津市联合环保工程设计有限公司 A kind of the efficient process system and its processing method of pharmaceutical industry production of raw medicine organic wastewater

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Application publication date: 20200110