CN104591477A - Method for treating tannery wastewater by virtue of modified high-calcium desulfurized fly ash - Google Patents
Method for treating tannery wastewater by virtue of modified high-calcium desulfurized fly ash Download PDFInfo
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- CN104591477A CN104591477A CN201410798549.XA CN201410798549A CN104591477A CN 104591477 A CN104591477 A CN 104591477A CN 201410798549 A CN201410798549 A CN 201410798549A CN 104591477 A CN104591477 A CN 104591477A
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Abstract
The invention discloses a method for treating tannery wastewater by virtue of modified high-calcium desulfurized fly ash. The method comprises the following steps: adding high-calcium desulfurized fly ash and glucose to water to form a mixed liquid, carrying out hydrothermal carbonization reaction on the mixed liquid in a high-pressure reaction kettle, and after the reaction, naturally cooling, filtering, washing and drying so as to obtain modified high-calcium desulfurized fly ash; stirring the obtained high-calcium desulfurized fly ash in the tannery wastewater, standing for precipitate separating so as to obtain a separated liquid; treating the obtained separated liquid by virtue of a biochemical process so as to obtain a biochemical separated liquid; and discharging the obtained biochemical separated liquid. The method for treating the tannery wastewater by virtue of the modified high-calcium desulfurized fly ash is simple to operate and excellent in processing effect; treated wastewater can accord with the national grade-II discharge standard; and the method can be used for turning harm into good and turning waste into wealth, so as to achieve a purpose of treating waste with another waste.
Description
Technical field
The present invention relates to technical field of waste water processing, particularly relate to a kind of method of modification desulfurization high calcium ash process leather-making waste water.
Background technology
The SO that S-contained substance burning produces
2pollution is one of subject matter of topsoil, desulfurization technologies different both at home and abroad also emerges in an endless stream, due to the difference of various desulfurization technology in carrying out practically process, also there is significant difference in the composition and performance of its byproduct desulfurization high calcium ash caused, and is difficult to unified process simply.Current desulfurization high calcium ash is difficult to be effectively used.
Desulfurization high calcium ash is applied to the field such as building materials, synthetic materials by present many countries, achieve zero release, and the mode that the desulfurization high calcium ash of China mainly buries lowland and waste and old mine with water filling is simply stacked, not only cause secondary pollution, and occupy a large amount of land resources, therefore, current hot issue is become to the comprehensive utilizating research of desulfurization high calcium ash.
Leather-making waste water is the waste water of discharging in leather production, its complicated component, usually containing multiple pollutant matter and toxic substances such as grease, collagen protein, animal and plant fiber, organic-inorganic solid substance, sulfide, chromium, salt, tensio-active agent, dyestuffs, colourity is dark, oxygen-consumption is high, the water yield is large, difficult treatment.The treatment process of current leather-making waste water has multiple, but it often exists a lot of shortcoming, and such as cost is high, and treatment effect is not very desirable etc.
Summary of the invention
The present invention proposes a kind of method of modification desulfurization high calcium ash process leather-making waste water, it is simple to operate, and treatment effect is excellent, and the leather-making waste water of process reaches national secondary discharge standard, and turns harm into good, turns waste into wealth, and reaches the object of the treatment of wastes with processes of wastes against one another.
The present invention proposes a kind of method of modification desulfurization high calcium ash process leather-making waste water, comprise the following steps:
S1, desulfurization high calcium ash and glucose are added to the water formation mixed solution, mixed solution are placed in autoclave and carry out hydrothermal carbonization reaction, reaction terminates rear naturally cooling, filters, washing, and drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained joined in leather-making waste water and stir in S1, staticly settling separation and obtain parting liquid;
S3, the parting liquid obtained is carried out biochemical process process obtain bio-chemistry separation liquid in S2;
S4, the bio-chemistry separation liquid obtained in S3 to be discharged.
Preferably, in S1, desulfurization high calcium ash is 6-10:1 with the ratio of the weight of glucose; Preferably, desulfurization high calcium ash is 8-9:1 with the ratio of the weight of glucose; Preferably, desulfurization high calcium ash is 8.5:1 with the ratio of the weight of glucose.
Preferably, in S1, the temperature of described hydrothermal carbonization reaction is 165-180 DEG C, and the time is 38-45h; Preferably, the temperature of described hydrothermal carbonization reaction is 170-175 DEG C, and the time is 40-43h; Preferably, the temperature of described hydrothermal carbonization reaction is 173 DEG C, and the time is 42h.
Preferably, in S2, modification desulfurization high calcium ash is 1:30-50 with the ratio of the weight of leather-making waste water; Preferably, modification desulfurization high calcium ash is 1:38-43 with the ratio of the weight of leather-making waste water; Preferably, modification desulfurization high calcium ash is 1:42 with the ratio of the weight of leather-making waste water.
Preferably, in S2, after modification desulfurization high calcium ash is joined leather-making waste water, adjust ph is 8-12; Preferably, after modification desulfurization high calcium ash is joined leather-making waste water, adjust ph is 9-11; Preferably, after modification desulfurization high calcium ash is joined leather-making waste water, adjust ph is 10.
Preferably, the method for described modification desulfurization high calcium ash process leather-making waste water, comprises the following steps:
S1, (6-10) X part desulfurization high calcium ash and X part glucose are added carry out stirring in (1.5-3) X part water and obtain mixed solution by weight, mixed solution is placed in containing teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 165-180 DEG C, the time of hydrothermal carbonization reaction is 38-45h, room temperature is naturally cooled to after reaction terminates, filter, washing, drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained is joined in (30-50) Y part leather-making waste water stir by weight in (1/2-4/5) Y part S1, then the pH value of regulation system is 8-12, primary sedimentation separation is carried out after staticly settling, obtain flash liberation liquid and primary sedimentation thing, in flash liberation liquid, add (1/5-1/2) Y part modification desulfurization high calcium ash again and stir, carry out secondary sedimentation separation after staticly settling, obtain secondary separation liquid and secondary precipitate;
The pH value of S3, adjustment secondary separation liquid is 9-10, then enters biological contact oxidation pond and stops 3-5h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3, biochemical throw out introduces biological contact oxidation pond.
Preferably, the method for described modification desulfurization high calcium ash process leather-making waste water, comprises the following steps:
S1, (8-9) X part desulfurization high calcium ash and X part glucose are added carry out stirring in (2-2.5) X part water and obtain mixed solution by weight, mixed solution is placed in containing teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 170-176 DEG C, the time of hydrothermal carbonization reaction is 43-44h, room temperature is naturally cooled to after reaction terminates, filter, washing, drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained is joined in (35-42) Y part leather-making waste water stir by weight in (2/3-3/4) Y part S1, then the pH value of regulation system is 9-10, primary sedimentation separation is carried out after staticly settling, obtain flash liberation liquid and primary sedimentation thing, in flash liberation liquid, add (1/4-1/3) Y part modification desulfurization high calcium ash again and stir, carry out secondary sedimentation separation after staticly settling, obtain secondary separation liquid and secondary precipitate;
The pH value of S3, adjustment secondary separation liquid is 9.5-10, then enters biological contact oxidation pond and stops 3.8-4.3h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3, biochemical throw out introduces biological contact oxidation pond.
Preferably, the method for described modification desulfurization high calcium ash process leather-making waste water, comprises the following steps:
S1,8.5X part desulfurization high calcium ash and X part glucose are added carry out stirring in 2.3X part water and obtain mixed solution by weight, mixed solution is placed in containing teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 173 DEG C, and the time of hydrothermal carbonization reaction is 43.5h, room temperature is naturally cooled to after reaction terminates, filter, washing, drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained is joined in 40Y part leather-making waste water stir by weight in 2/3Y part S1, then the pH value of regulation system is 9.5, primary sedimentation separation is carried out after staticly settling, obtain flash liberation liquid and primary sedimentation thing, in flash liberation liquid, add 1/3Y part modification desulfurization high calcium ash again and stir, carry out secondary sedimentation separation after staticly settling, obtain secondary separation liquid and secondary precipitate;
The pH value of S3, adjustment secondary separation liquid is 10, then enters biological contact oxidation pond and stops 4h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3, biochemical throw out introduces biological contact oxidation pond.
Preferably, also comprise after S4: biochemical throw out is carried out biochemical process process.
In the present invention, first hydrothermal carbonization method is adopted to utilize glucose to carry out modification to desulfurization high calcium ash, as shown in Figure 2, in modification desulfurization high calcium ash, the nano-sized carbon at high temperature formed has been evenly distributed on the surface of desulfurization high calcium ash, define desulfurization high calcium ash/nano carbon composite material, cause the structure of modification desulfurization high calcium ash more loose compared with the structure of the desulfurization high calcium ash shown in Fig. 1, and it is provided with the character of desulfurization high calcium ash and nano-sized carbon simultaneously, join in leather-making waste water, its loading capacity is high, be combined with biochemical process and process leather-making waste water, the colourity of leather-making waste water can be reduced simultaneously, ammonia-nitrogen content, the content of solid suspension content and cadmium ion, and to the lower concentration cadmium ion lower than 100mg/L, also there is good treatment effect, and the method is simple to operate, turn harm into good, turn waste into wealth, reach the object of the treatment of wastes with processes of wastes against one another, save cost, protect environment.
Utilizing its pH of leather-making waste water of the method process of modification desulfurization high calcium ash process leather-making waste water of the present invention to be the concentration of 60-110mg/L, SS for 6-9, CODcr concentration is 75-100mg/L, BOD5 concentration is 80-120mg/L, ammonia nitrogen concentration be 7-11mg L, Cr
3+concentration is 0.7-0.9mg/L, reaches national secondary discharge standard.
Accompanying drawing explanation
Fig. 1 is the stereoscan photograph of desulfurization high calcium ash;
Fig. 2 is the stereoscan photograph of described modification desulfurization high calcium ash.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
Embodiment 1
The method of modification desulfurization high calcium ash process leather-making waste water of the present invention, comprises the following steps:
S1,60 parts of desulfurization high calcium ashs and 10 parts of glucose are added in 150 parts of water form mixed solution by weight, mixed solution is transferred in autoclave, hydrothermal carbonization reaction is carried out after being sealed by autoclave, wherein, the temperature of hydrothermal carbonization reaction is 165 DEG C, and the time of hydrothermal carbonization reaction is 45h, then naturally cools to room temperature, filter, filter cake washing, drying are obtained modification desulfurization high calcium ash;
S2, by weight the modification desulfurization high calcium ash obtained in 5 parts of S1 is joined in 150 parts of leather-making waste waters stir postprecipitation be separated, obtain parting liquid and throw out;
S3, the parting liquid obtained in S2 is carried out Wastewater Treated by Activated Sludge Process, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid obtained in S3 to be discharged.
Embodiment 2
The method of modification desulfurization high calcium ash process leather-making waste water of the present invention, comprises the following steps:
S1, by weight 100 parts of desulfurization high calcium ashs and 10 parts of glucose are added stir 40min in 150 parts of water after form mixed solution, mixed solution is transferred to containing in teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 180 DEG C, the time of hydrothermal carbonization reaction is 38h, then room temperature is naturally cooled to, filter, after filter cake distilled water wash, under 60 DEG C of conditions, drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained in 10 parts of S1 is joined in 500 parts of leather-making waste waters to stir the pH of regulation system after 60min be 8 by weight, be separated after staticly settling 5h, obtain parting liquid and throw out;
S3, the parting liquid obtained in S2 is carried out oxidation channels treatment, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3.
Embodiment 3
The method of modification desulfurization high calcium ash process leather-making waste water of the present invention, comprises the following steps:
S1, by weight 40 parts of desulfurization high calcium ashs and 5 parts of glucose are added stir 30min in 80 parts of water after form mixed solution, mixed solution is transferred to containing in teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 173 DEG C, the time of hydrothermal carbonization reaction is 40h, then room temperature is naturally cooled to, filter, after filter cake distilled water wash, under 50 DEG C of conditions, drying obtains modification desulfurization high calcium ash;
S2, by weight the modification desulfurization high calcium ash obtained in 3 parts of S1 is joined stir 50min in 135 parts of leather-making waste waters after the pH of regulation system be 9, primary sedimentation separation is carried out after staticly settling 3h, obtain flash liberation liquid and primary sedimentation thing, 1 part of modification desulfurization high calcium ash is added again in flash liberation liquid, carry out secondary sedimentation separation after stirring 15min, obtain secondary separation liquid and secondary precipitate;
The pH of S3, adjustment secondary separation liquid is 9, then enters biological contact oxidation pond and stops 5h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3, biochemical throw out introduces biological contact oxidation pond.
Embodiment 4
The method of modification desulfurization high calcium ash process leather-making waste water of the present invention, comprises the following steps:
S1, by weight 48 parts of desulfurization high calcium ashs and 5 parts of glucose are added stir 10min in 120 parts of water after form mixed solution, mixed solution is transferred to containing in teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 168 DEG C, the time of hydrothermal carbonization reaction is 43h, then room temperature is naturally cooled to, filter, after filter cake distilled water wash, under 25 DEG C of conditions, drying obtains modification desulfurization high calcium ash;
S2, by weight the modification desulfurization high calcium ash obtained in 3 parts of S1 is joined stir 20min in 150 parts of leather-making waste waters after the pH of regulation system be 11, primary sedimentation separation is carried out after staticly settling 2h, obtain flash liberation liquid and primary sedimentation thing, 1.5 parts of modification desulfurization high calcium ashs are added again in flash liberation liquid, carry out secondary sedimentation separation after stirring 5min, obtain secondary separation liquid and secondary precipitate;
The pH of S3, adjustment secondary separation liquid is 9.5, then enters biological contact oxidation pond and stops 5h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3, biochemical throw out introduces biological contact oxidation pond.
Embodiment 5
The method of described modification desulfurization high calcium ash process leather-making waste water of the present invention, comprises the following steps:
S1, by weight 45 parts of desulfurization high calcium ashs and 5 parts of glucose are added stir 20min in 110 parts of water after form mixed solution, mixed solution is transferred to containing in teflon-lined stainless steel cauldron, hydrothermal carbonization reaction is carried out after putting into baking oven after being sealed by stainless steel cauldron, wherein, the temperature of hydrothermal carbonization reaction is 170 DEG C, the time of hydrothermal carbonization reaction is 42h, then room temperature is naturally cooled to, filter, after filter cake distilled water wash, under 29 DEG C of conditions, drying obtains modification desulfurization high calcium ash;
S2, by weight the modification desulfurization high calcium ash obtained in 3 parts of S1 is joined stir 26min in 137 parts of leather-making waste waters after the pH of regulation system be 10, primary sedimentation separation is carried out after staticly settling 2.6h, obtain flash liberation liquid and primary sedimentation thing, 1.3 parts of modification desulfurization high calcium ashs are added again in flash liberation liquid, carry out secondary sedimentation separation after stirring 10min, obtain secondary separation liquid and secondary precipitate;
The pH of S3, adjustment secondary separation liquid is 10, then enters biological contact oxidation pond and stops 3.7h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3, biochemical throw out introduces biological contact oxidation pond.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (9)
1. a method for modification desulfurization high calcium ash process leather-making waste water, is characterized in that, comprise the following steps:
S1, desulfurization high calcium ash and glucose are added to the water formation mixed solution, mixed solution are placed in autoclave and carry out hydrothermal carbonization reaction, reaction terminates rear naturally cooling, filters, washing, and drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained joined in leather-making waste water and stir in S1, staticly settling separation and obtain parting liquid;
S3, the parting liquid obtained is carried out biochemical process process obtain bio-chemistry separation liquid in S2;
S4, the bio-chemistry separation liquid obtained in S3 to be discharged.
2. the method for modification desulfurization high calcium ash process leather-making waste water according to claim 1, it is characterized in that, in S1, desulfurization high calcium ash is 6-10:1 with the ratio of the weight of glucose; Preferably, desulfurization high calcium ash is 8-9:1 with the ratio of the weight of glucose; Preferably, desulfurization high calcium ash is 8.5:1 with the ratio of the weight of glucose.
3. the method for modification desulfurization high calcium ash process leather-making waste water according to claim 1 or 2, is characterized in that, in S1, the temperature of described hydrothermal carbonization reaction is 165-180 DEG C, and the time is 38-45h; Preferably, the temperature of described hydrothermal carbonization reaction is 170-175 DEG C, and the time is 40-43h; Preferably, the temperature of described hydrothermal carbonization reaction is 173 DEG C, and the time is 42h.
4. the method for modification desulfurization high calcium ash process leather-making waste water according to any one of claim 1-3, it is characterized in that, in S2, modification desulfurization high calcium ash is 1:30-50 with the ratio of the weight of leather-making waste water; Preferably, modification desulfurization high calcium ash is 1:38-43 with the ratio of the weight of leather-making waste water; Preferably, modification desulfurization high calcium ash is 1:42 with the ratio of the weight of leather-making waste water.
5. the method for modification desulfurization high calcium ash process leather-making waste water according to any one of claim 1-4, it is characterized in that, in S2, after modification desulfurization high calcium ash is joined leather-making waste water, adjust ph is 8-12; Preferably, after modification desulfurization high calcium ash is joined leather-making waste water, adjust ph is 9-11; Preferably, after modification desulfurization high calcium ash is joined leather-making waste water, adjust ph is 10.
6. the method for modification desulfurization high calcium ash process leather-making waste water according to any one of claim 1-5, is characterized in that, comprise the following steps:
S1, (6-10) X part desulfurization high calcium ash and X part glucose are added carry out stirring in (1.5-3) X part water and obtain mixed solution by weight, mixed solution is placed in containing teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 165-180 DEG C, the time of hydrothermal carbonization reaction is 38-45h, room temperature is naturally cooled to after reaction terminates, filter, washing, drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained is joined in (30-50) Y part leather-making waste water stir by weight in (1/2-4/5) Y part S1, then the pH value of regulation system is 8-12, primary sedimentation separation is carried out after staticly settling, obtain flash liberation liquid and primary sedimentation thing, in flash liberation liquid, add (1/5-1/2) Y modification desulfurization high calcium ash again and stir, carry out secondary sedimentation separation after staticly settling, obtain secondary separation liquid and secondary precipitate;
The pH value of S3, adjustment secondary separation liquid is 9-10, then enters biological contact oxidation pond and stops 3-5h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3.
7. the method for modification desulfurization high calcium ash process leather-making waste water according to any one of claim 1-6, is characterized in that, comprise the following steps:
S1, (8-9) X part desulfurization high calcium ash and X part glucose are added carry out stirring in (2-2.5) X part water and obtain mixed solution by weight, mixed solution is placed in containing teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 170-176 DEG C, the time of hydrothermal carbonization reaction is 43-44h, room temperature is naturally cooled to after reaction terminates, filter, washing, drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained is joined in (35-42) Y part leather-making waste water stir by weight in (2/3-3/4) Y part S1, then the pH value of regulation system is 9-10, primary sedimentation separation is carried out after staticly settling, obtain flash liberation liquid and primary sedimentation thing, in flash liberation liquid, add (1/4-1/3) Y part modification desulfurization high calcium ash again and stir, carry out secondary sedimentation separation after staticly settling, obtain secondary separation liquid and secondary precipitate;
The pH value of S3, adjustment secondary separation liquid is 9.5-10, then enters biological contact oxidation pond and stops 3.8-4.3h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3.
8. the method for modification desulfurization high calcium ash process leather-making waste water according to any one of claim 1-7, is characterized in that, comprise the following steps:
S1,8.5X part desulfurization high calcium ash and X part glucose are added carry out stirring in 2.3X part water and obtain mixed solution by weight, mixed solution is placed in containing teflon-lined stainless steel cauldron, put into baking oven after being sealed by stainless steel cauldron and carry out hydrothermal carbonization reaction, wherein, the temperature of hydrothermal carbonization reaction is 173 DEG C, and the time of hydrothermal carbonization reaction is 43.5h, room temperature is naturally cooled to after reaction terminates, filter, washing, drying obtains modification desulfurization high calcium ash;
S2, the modification desulfurization high calcium ash obtained is joined in 40Y part leather-making waste water stir by weight in 2/3Y part S1, then the pH value of regulation system is 9.5, primary sedimentation separation is carried out after staticly settling, obtain flash liberation liquid and primary sedimentation thing, in flash liberation liquid, add 1/3Y part modification desulfurization high calcium ash again and stir, carry out secondary sedimentation separation after staticly settling, obtain secondary separation liquid and secondary precipitate;
The pH value of S3, adjustment secondary separation liquid is 10, then enters biological contact oxidation pond and stops 4h, then introduce settling tank and carry out mud-water separation, obtain bio-chemistry separation liquid and biochemical throw out;
S4, the bio-chemistry separation liquid discharge will obtained in S3.
9. the method for modification desulfurization high calcium ash process leather-making waste water according to any one of claim 1-8, is characterized in that, also comprise after S4: biochemical throw out is carried out biochemical process process.
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| CN105536687A (en) * | 2015-12-25 | 2016-05-04 | 华中科技大学 | Multi-pollutant synergic removing adsorbent and preparing method thereof |
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| CN105536687A (en) * | 2015-12-25 | 2016-05-04 | 华中科技大学 | Multi-pollutant synergic removing adsorbent and preparing method thereof |
| CN105536687B (en) * | 2015-12-25 | 2018-10-26 | 华中科技大学 | A kind of multi-pollutant cooperation-removal adsorbent and preparation method thereof |
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