CN102964013B - Electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins - Google Patents
Electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins Download PDFInfo
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- CN102964013B CN102964013B CN201210493370.4A CN201210493370A CN102964013B CN 102964013 B CN102964013 B CN 102964013B CN 201210493370 A CN201210493370 A CN 201210493370A CN 102964013 B CN102964013 B CN 102964013B
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Abstract
The invention provides an electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins. A cheap iron plate is used as a polar plate. Chromaticity and organic matters are effectively removed through flocculation of nascent state of ferric oxides generated by electrocoagulation. After pypocholoride is added into the electrocoagulation effluent, redox reaction further occurs by ferrous ions, organic matters and the like with the pypocholoride to strengthen removal of chromaticity and organic matters in the effluent. The treatment method provided by the invention sequentially comprises the steps of electrocoagulation, oxidation of pypocholoride, solid-liquid separation in a plate sedimentation tank, and filtration by double filters of sand coal. According to the electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins provided by the invention, the method combining electrocoagulation with oxidation of pypocholoride effectively solves the problem that organic matters and chromaticity in treatment of effluent in conventional biochemical treatment of waste water of diosgenin saponins are hard to meet the standard, is simple to operate and can easily improve a current wastewater treatment process. Treated water can be reused in the production process of diosgenin saponins, so that environmental pollution is greatly reduced, and sustainable use of water resource is enhanced.
Description
Technical field
The invention belongs to advanced treatment of industrial waste water technical field, especially relate to a kind of electric coagulation advanced treatment system and method for turmeric saponin wastewater biochemical treatment water outlet.
Background technology
Yellow ginger, formal name used at school Rhizome of Peltate Yam, is the important medicine chemical material of synthesizing steroid hormonal medicaments and contraceptive steroid, has the good reputation of " gold in medicine ", yellow ginger natural distributed mainly concentrates on a few countries such as China and Mexico.In China, yellow ginger plantation processing industry mainly concentrates on the mountain areas such as Northwest of Hubei Province, these areas are central water source area of China's Route, in the process of yellow ginger processing saponin, can produce a large amount of high concentrated organic wastewaters, serious threat is to the water quality safety of Route waterhead area.
Turmeric saponin wastewater is to utilize yellow ginger to produce the waste water being produced by processes such as acid hydrolysis, washing, filtrations in the process of saponin hydrolysate, and its composite waste has acid strong (pH < 2 conventionally), organic concentration is high, colourity is large, biodegradability is poor feature.For the processing of turmeric saponin wastewater, domestic generally employing first neutralizes adjusting, then carry out anaerobic biological treatment, finally carry out the processing method of aerobe processing, but each turmeric saponin processing enterprise fails its waste water effectively to administer substantially, especially unstable to the treatment effect of organic content and colourity, common 200～the 500mg/L of water outlet COD(after this art breading) and colourity (common 100～200 times) be often difficult to reach " saponin industry pollution discharge standard " (GB20425-2006) in regulation (COD:300mg/L of control limit, colourity: 80 times).
At present domestic for the existing organic concentration height of turmeric saponin wastewater biochemical treatment water outlet and the large problem of colourity, the main solution of employing has: (oxygenant is mainly H to oxidation style
2o
2, NaClO), active carbon adsorption and embrane method etc.But still there are the following problems for these methods: H
2o
2, although NaClO oxidation style has certain clearance to colourity, can not steady removal organism, and it is higher to add merely reagent cost; Active carbon adsorption and embrane method running cost are high, complicated operation.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of electric coagulation advanced treatment system and method for turmeric saponin wastewater biochemical treatment water outlet, is especially suitable for processing turmeric saponin wastewater biochemical treatment water outlet, makes its COD and chroma stability up to standard.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of electric coagulation advanced treatment system of turmeric saponin wastewater biochemical treatment water outlet, comprises electric coagulation basin, inclined-plate clarifying basin and coal sand filter;
Described electric coagulation basin inside is provided with into water perforated pipe, the feed-water end of described water inlet perforated pipe is connected with intake pump, described electric coagulation basin effluent adopting the first overflow weir, before described the first overflow weir, be provided with the first scum board, described electric coagulation basin is connected by the first pipe connecting with described inclined-plate clarifying basin, one end of described the first pipe connecting is connected with the first water leg that is arranged at described the first overflow weir water outlet side, the other end is connected with the water-in of described inclined-plate clarifying basin, on the body of described the first pipe connecting, there is take-off pipe, the import of described take-off pipe is connected with the dosing volume pump for adding hypochlorite, described inclined-plate clarifying basin effluent adopting the second overflow weir, before described the second overflow weir, be provided with the second scum board, described inclined-plate clarifying basin is connected by the second pipe connecting with described coal sand filter, one end of described the second pipe connecting is connected with the second water leg that is arranged at described the second overflow weir water outlet side, the other end is connected with the water-in of described coal sand filter.
The electric coagulation advanced treatment system of described turmeric saponin wastewater biochemical treatment water outlet can also adopt following technical measures:
Between the pole plate and bucket of described water inlet perforated pipe in described electric coagulation basin, and its body is provided with posticum.
Pole plate in described electric coagulation basin adopts multipole to connect, and the two ends pole plate being directly connected with power supply is stainless steel plate, and all the other pole plates are iron plate.
Quantity of polar plate in described electric coagulation basin is 25, and the distance between every two described pole plates is 40 millimeters, and the length of described pole plate is 700 millimeters, and width is 500 millimeters, and thickness is 2 millimeters.
Described the first overflow weir is overflow V-notch weir, and the hydraulic detention time of described electric coagulation basin is 0.5 hour; Described the second overflow weir is overflow V-notch weir, and the hydraulic detention time of described inclined-plate clarifying basin is for being more than or equal to 1 hour.
In described inclined-plate clarifying basin, comprise inhalant region, mud district and sloping plate deposition district, described sloping plate deposition district is positioned at top, described mud district, the water-in of described inclined-plate clarifying basin is positioned at the upper part of described inhalant region, the bottom of described inhalant region is arranged with into water perforated wall, on described water inlet perforated wall, be evenly distributed with prosopyle, described prosopyle communicates with described sloping plate deposition district.
The internal diameter of described coal sand filter is 35 centimetres, and its top is provided with back flushing water outlet, and its bottom is provided with water outlet and back flushing intake pump, and described coal sand filter inside is followed successively by from lower to upper: thickness is that 10 centimetres, cobble particle diameter are the cobble bed course of 2-20 millimeter; Thickness is 40 centimetres, and quartz sand particle size is the quartz sand filter media of 0.5-1.0 millimeter; Thickness is 60 centimetres, and hard coal particle diameter is the ANTHRACITE FILTER MEDIA of 0.8-1.8 millimeter.
A method of utilizing above-mentioned electric coagulation advanced treatment system advanced treatment turmeric saponin wastewater biochemical treatment water outlet, comprises following four steps:
(1) by described intake pump, turmeric saponin wastewater biochemical treatment water outlet is inputed to described electric coagulation basin, the throwing out of the nascent state ferriferous oxide producing by electric coagulation, reduces colourity and the organic content of described turmeric saponin wastewater biochemical treatment water outlet;
(2) described dosing volume pump adds hypochlorite solutions to described the first pipe connecting, the electric coagulation water outlet of discharging from described the first overflow weir mixes described the first pipe connecting with described hypochlorite solutions, and reaction decolouring, makes ferrous ion and organism and described hypochlorite solutions generation redox reaction in described electric coagulation water outlet;
(3) enter described inclined-plate clarifying basin through the described electric coagulation water outlet of the described reaction of step (2), the flow lifting type anisotropic flow solid-liquid separation effect of the swash plate by described sloping plate deposition district, further removes the flco in described electric coagulation water outlet;
(4) the inclined-plate clarifying basin water outlet of discharging from described the second overflow weir enters described coal sand filter by described the second pipe connecting, filters through gravity streaming, flows out from the water outlet of described coal sand filter.
Described in step (1), the pH value of turmeric saponin wastewater biochemical treatment water outlet is 6-9.
Hypochlorite solutions described in step (2) is NaClO solution, KClO solution or Ca (ClO)
2solution, according to colourity and the organic content of turmeric saponin wastewater biochemical treatment water outlet described in step (1), by regulating described dosing volume pump to regulate the dosage of described hypochlorite.
The filtration velocity of described coal sand filter is 5-10 m/h.
Advantage and positively effect that the present invention has are: electric coagulation and hypochlorite are oxidized effective combination by the present invention, stable to the colourity in turmeric saponin wastewater biochemical treatment water outlet and organic treatment effect, technological operation is simple, energy consumption is low, and whole system is easy to realize automatic operation, after processing, the index such as COD and colourity of water reaches " saponin industry pollution discharge standard ".On the one hand, be convenient to the transformation of existing waste water treatment process, make the discharge of turmeric saponin wastewater stably reaching standard; On the other hand, because yellow ginger production saponin water water quality requirement is not high, for turmeric saponin wastewater reuse provides possibility.
Brief description of the drawings
Fig. 1 is a process flow sheet of turmeric saponin wastewater biochemical treatment in prior art
Fig. 2 is the structural representation of the electric coagulation advanced treatment system of turmeric saponin wastewater biochemical treatment water outlet
In figure:
1, electric coagulation basin 2, inclined-plate clarifying basin 3, coal sand filter
4, water inlet perforated pipe 5, intake pump 6, the first overflow weir
7, the first pipe connecting 8, the first water leg 9, dosing volume pump
10, the second pipe connecting 11, pole plate 12, bucket
13, inhalant region 14, mud district 15, sloping plate deposition district
16, water inlet perforated wall 17, back flushing water outlet 18, water outlet
19, back flushing intake pump 20, the second overflow weir 21, the second water leg
22, power supply
Embodiment
Fig. 1 is a typical process flow sheet of turmeric saponin wastewater biochemical treatment in prior art, and the present invention is for the treatment of flocculation sedimentation tank water outlet in this technique, i.e. turmeric saponin wastewater biochemical treatment water outlet.
Embodiment 1:
As shown in Figure 2, a kind of electric coagulation advanced treatment system of turmeric saponin wastewater biochemical treatment water outlet, comprises electric coagulation basin 1, inclined-plate clarifying basin 2 and coal sand filter 3;
Electricity coagulation basin 1 inside is provided with into water perforated pipe 4, the feed-water end of water inlet perforated pipe 4 is connected with intake pump 5, electricity coagulation basin 1 effluent adopting the first overflow weir 6, before described the first overflow weir 6, be provided with the first scum board, electricity coagulation basin 1 is connected by the first pipe connecting 7 with inclined-plate clarifying basin 2, one end of the first pipe connecting 7 is connected with the first water leg 8 that is arranged at the first overflow weir 6 water outlet sides, the other end is connected with the water-in of inclined-plate clarifying basin 2, on the body of the first pipe connecting 7, there is take-off pipe, the import of take-off pipe is connected with the dosing volume pump 9 for adding hypochlorite, inclined-plate clarifying basin 2 effluent adopting the second overflow weirs 20, before the second overflow weir 20, be provided with the second scum board, inclined-plate clarifying basin 2 is connected by the second pipe connecting 10 with coal sand filter 3, one end of the second pipe connecting 10 is connected with the second water leg 21 that is arranged at the second overflow weir 20 water outlet sides, the other end is connected with the water-in of coal sand filter 3.
Between the pole plate 11 and bucket 12 of water inlet perforated pipe 4 in electric coagulation basin 1, and its body is provided with posticum.
The pole plate 11 of electricity in coagulation basin 1 adopts multipole to connect, and the two ends pole plate being directly connected with power supply 22 is stainless steel plate, and all the other pole plates are iron plate.
The quantity of the pole plate 11 of electricity in coagulation basin 1 is 25, and the distance between every two pole plates is 40 millimeters, and the length of pole plate 11 is 700 millimeters, and width is 500 millimeters, and thickness is 2 millimeters.
The first overflow weir 6 is overflow V-notch weir, and the hydraulic detention time of electric coagulation basin 1 is 0.5 hour; The second overflow weir 20 is overflow V-notch weir, and the hydraulic detention time of inclined-plate clarifying basin 2 is for being more than or equal to 1 hour.
In inclined-plate clarifying basin 2, comprise inhalant region 13, mud district 14 and sloping plate deposition district 15, sloping plate deposition district 15 is positioned at 14 tops, mud district, the water-in of inclined-plate clarifying basin 2 is positioned at the upper part of inhalant region 13, the bottom of inhalant region 13 is arranged with into water perforated wall 16, on water inlet perforated wall 16, be evenly distributed with prosopyle, prosopyle communicates with sloping plate deposition district 15.
The internal diameter of coal sand filter 3 is 35 centimetres, and its top is provided with back flushing water outlet 17, and its bottom is provided with water outlet 18 and back flushing intake pump 19, and coal sand filter 3 inside are followed successively by from lower to upper: thickness is that 10 centimetres, cobble particle diameter are the cobble bed course of 2-20 millimeter; Thickness is 40 centimetres, and quartz sand particle size is the quartz sand filter media of 0.5-1.0 millimeter; Thickness is 60 centimetres, and hard coal particle diameter is the ANTHRACITE FILTER MEDIA of 0.8-1.8 millimeter.
A method of utilizing above-mentioned electric coagulation advanced treatment system advanced treatment turmeric saponin wastewater biochemical treatment water outlet, comprises following four steps:
(1) by intake pump 5, turmeric saponin wastewater biochemical treatment water outlet is inputed to electric coagulation basin 1, the throwing out of the nascent state ferriferous oxide producing by electric coagulation, reduces colourity and the organic content of described turmeric saponin wastewater biochemical treatment water outlet;
(2) dosing volume pump 9 adds hypochlorite solutions to the first pipe connecting 7, the electric coagulation water outlet of discharging from the first overflow weir 6 mixes the first pipe connecting 7 with described hypochlorite solutions, and reaction decolouring, makes ferrous ion and organism and described hypochlorite solutions generation redox reaction in described electric coagulation water outlet;
(3) enter inclined-plate clarifying basin 2 through the described electric coagulation water outlet of the described reaction of step (2), the flow lifting type anisotropic flow solid-liquid separation effect of the swash plate by sloping plate deposition district 15, further removes the flco in described electric coagulation water outlet;
(4) the inclined-plate clarifying basin water outlet of discharging from the second overflow weir 20 enters coal sand filter 3 by the second pipe connecting 10, filters through gravity streaming, flows out from the water outlet 18 of coal sand filter 3.
The filtration velocity of described coal sand filter is 5-10 m/h.
Described in step (1), the flow of turmeric saponin wastewater biochemical treatment water outlet is 0.73m
3/ h, pH value is that 6.8～7.1, COD is 246～486mg/L, and colourity is 200 times, hypochlorite solutions described in step (2) is that mass concentration is 30% NaClO solution, its dosage is: in every liter of turmeric saponin wastewater biochemical treatment water outlet, add the described NaClO solution of 2 milliliters, move continuously 8h, carry out dynamic monitoring, system effluent quality is: pH value is 6.8～7.0, COD is 128～247mg/L, and colourity is 100 times, the equal stably reaching standard of COD and colourity.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is only: described in step (1), the flow of turmeric saponin wastewater biochemical treatment water outlet is 0.73m
3/ h, pH value is that 6.9～7.1, COD is 223～310mg/L, and colourity is 100 times, hypochlorite solutions described in step (2) is that mass concentration is 30% KClO solution, its dosage is: in every liter of turmeric saponin wastewater biochemical treatment water outlet, add the described KClO solution of 2 milliliters, move continuously 8h, carry out dynamic monitoring, system effluent quality is: pH value is 6.9～7.0, COD is 110～220mg/L, and colourity is 50 times, the equal stably reaching standard of COD and colourity.
Embodiment 3:
The difference of the present embodiment and embodiment 1 is only: described in step (1), the flow of turmeric saponin wastewater biochemical treatment water outlet is 0.73m
3/ h, pH value is that 6.9～7.0, COD is 318～432mg/L, and colourity is 100 times, and the hypochlorite solutions described in step (2) is that mass concentration is 10% Ca (ClO)
2solution, its dosage is: the described Ca (ClO) that adds 8 milliliters in every liter of turmeric saponin wastewater biochemical treatment water outlet
2solution, moves 8h continuously, carries out dynamic monitoring, and system effluent quality is: pH value is that 6.9～7.0, COD is 120～240mg/L, and colourity is 50 times, the equal stably reaching standard of COD and colourity.
Above three embodiment of the present invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the present patent application scope, within all should still belonging to patent covering scope of the present invention.
Claims (10)
1. an electric coagulation advanced treatment system for turmeric saponin wastewater biochemical treatment water outlet, comprises electric coagulation basin, inclined-plate clarifying basin and coal sand filter;
Described electric coagulation basin inside is provided with into water perforated pipe, the feed-water end of described water inlet perforated pipe is connected with intake pump, described electric coagulation basin effluent adopting the first overflow weir, before described the first overflow weir, be provided with the first scum board, described electric coagulation basin is connected by the first pipe connecting with described inclined-plate clarifying basin, one end of described the first pipe connecting is connected with the first water leg that is arranged at described the first overflow weir water outlet side, the other end is connected with the water-in of described inclined-plate clarifying basin, on the body of described the first pipe connecting, there is take-off pipe, the import of described take-off pipe is connected with the dosing volume pump for adding hypochlorite, described inclined-plate clarifying basin effluent adopting the second overflow weir, before the second overflow weir of described inclined-plate clarifying basin, be provided with the second scum board, described inclined-plate clarifying basin is connected by the second pipe connecting with described coal sand filter, one end of described the second pipe connecting is connected with the second water leg that is arranged at described the second overflow weir water outlet side, the other end is connected with the water-in of described coal sand filter.
2. electric coagulation advanced treatment system according to claim 1, is characterized in that: between the pole plate and bucket of described water inlet perforated pipe in described electric coagulation basin, and its body is provided with posticum.
3. electric coagulation advanced treatment system according to claim 1, is characterized in that: pole plate in described electric coagulation basin adopts multipole to connect, and the two ends pole plate being directly connected with power supply is stainless steel plate, and all the other pole plates are iron plate.
4. electric coagulation advanced treatment system according to claim 1, is characterized in that: described the first overflow weir is overflow V-notch weir, the hydraulic detention time of described electric coagulation basin is 0.5 hour; Described the second overflow weir is overflow V-notch weir, and the hydraulic detention time of described inclined-plate clarifying basin is for being more than or equal to 1 hour.
5. electric coagulation advanced treatment system according to claim 1, it is characterized in that: in described inclined-plate clarifying basin, comprise inhalant region, mud district and sloping plate deposition district, described sloping plate deposition district is positioned at top, described mud district, the water-in of described inclined-plate clarifying basin is positioned at the upper part of described inhalant region, the bottom of described inhalant region is arranged with into water perforated wall, on described water inlet perforated wall, be evenly distributed with prosopyle, described prosopyle communicates with described sloping plate deposition district.
6. electric coagulation advanced treatment system according to claim 1, it is characterized in that: the internal diameter of described coal sand filter is 35 centimetres, its top is provided with back flushing water outlet, its bottom is provided with water outlet and back flushing intake pump, and described coal sand filter inside is followed successively by from lower to upper: thickness is that 10 centimetres, cobble particle diameter are the cobble bed course of 2-20 millimeter; Thickness is 40 centimetres, and quartz sand particle size is the quartz sand filter media of 0.5-1.0 millimeter; Thickness is 60 centimetres, and hard coal particle diameter is the ANTHRACITE FILTER MEDIA of 0.8-1.8 millimeter.
7. a method of utilizing the electric coagulation advanced treatment system advanced treatment turmeric saponin wastewater biochemical treatment water outlet described in claim 1, is characterized in that comprising following four steps:
(1) by described intake pump, turmeric saponin wastewater biochemical treatment water outlet is inputed to described electric coagulation basin, the throwing out of the nascent state ferriferous oxide producing by electric coagulation, reduces colourity and the organic content of described turmeric saponin wastewater biochemical treatment water outlet;
(2) described dosing volume pump adds hypochlorite solutions to described the first pipe connecting, the electric coagulation water outlet of discharging from described the first overflow weir mixes described the first pipe connecting with described hypochlorite solutions, and reaction decolouring, makes ferrous ion and organism and described hypochlorite solutions generation redox reaction in described electric coagulation water outlet;
(3) enter described inclined-plate clarifying basin through the described electric coagulation water outlet of the described reaction of step (2), the flow lifting type anisotropic flow solid-liquid separation effect of the swash plate by described sloping plate deposition district, further removes the flco in described electric coagulation water outlet;
(4) the inclined-plate clarifying basin water outlet of discharging from described the second overflow weir enters described coal sand filter by described the second pipe connecting, filters through gravity streaming, flows out from the water outlet of described coal sand filter.
8. the method for advanced treatment turmeric saponin wastewater biochemical treatment water outlet according to claim 7, is characterized in that: the pH value of turmeric saponin wastewater biochemical treatment water outlet described in step (1) is 6-9.
9. the method for advanced treatment turmeric saponin wastewater biochemical treatment water outlet according to claim 7, is characterized in that: hypochlorite solutions described in step (2) is NaClO solution, KClO solution or Ca (ClO)
2solution, according to colourity and the organic content of turmeric saponin wastewater biochemical treatment water outlet described in step (1), by regulating described dosing volume pump to regulate the dosage of described hypochlorite solutions.
10. the method for advanced treatment turmeric saponin wastewater biochemical treatment water outlet according to claim 7, is characterized in that: the filtration velocity of described coal sand filter is 5-10 m/h.
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|---|---|---|---|
| CN201210493370.4A CN102964013B (en) | 2012-11-27 | 2012-11-27 | Electrocoagulation advanced treatment system and method for biochemically treating effluent of waste water of diosgenin saponins |
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| CN104071872B (en) * | 2014-07-18 | 2015-12-02 | 宛金晖 | Electrolysis electricity flocculation waste disposal plant and using method |
| CN105923857A (en) * | 2016-06-22 | 2016-09-07 | 陕西科技大学 | Pretreatment method of sisal hemp/yam diosgenin wastewater |
| CN111777166A (en) * | 2019-04-04 | 2020-10-16 | 广源造纸股份有限公司 | Waste water equalizing basin and cooling structure thereof |
| CN112777718A (en) * | 2020-12-18 | 2021-05-11 | 滨化集团股份有限公司 | Treatment method of high-salinity wastewater |
| CN114133068A (en) * | 2021-12-09 | 2022-03-04 | 同济大学 | Up-flow coal chemical wastewater pretreatment device and method |
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| CN101503268A (en) * | 2009-03-11 | 2009-08-12 | 东莞市珠江海咸水淡化研究所 | Zero discharge processing EBM method for dyeing waste water |
| CN101560040A (en) * | 2009-05-08 | 2009-10-21 | 北京清大国华环保科技有限公司 | Method and device for processing pharmaceutical wastewater by pulse electrocoagulation-MBR |
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| CN101503268A (en) * | 2009-03-11 | 2009-08-12 | 东莞市珠江海咸水淡化研究所 | Zero discharge processing EBM method for dyeing waste water |
| CN101560040A (en) * | 2009-05-08 | 2009-10-21 | 北京清大国华环保科技有限公司 | Method and device for processing pharmaceutical wastewater by pulse electrocoagulation-MBR |
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