CN102328966A - Wastewater zero emission treatment process in glass industry - Google Patents
Wastewater zero emission treatment process in glass industry Download PDFInfo
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- CN102328966A CN102328966A CN201110256975A CN201110256975A CN102328966A CN 102328966 A CN102328966 A CN 102328966A CN 201110256975 A CN201110256975 A CN 201110256975A CN 201110256975 A CN201110256975 A CN 201110256975A CN 102328966 A CN102328966 A CN 102328966A
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Abstract
The invention discloses a wastewater zero emission treatment process in a glass industry. The treatment process comprises the steps of introducing wastewater in a glass plant into a wet desulfurization process system; and directly evaporating the wastewater by utilizing heat of kiln fume. According to the invention, the former wall-type wastewater evaporation with valuable steam is changed into direct wastewater evaporation with fume waste heat, thus heat transfer efficiency is high, and the problems of fouling blocking and the like are not caused, thereby achieving the effects of bidirectionally treating wastewater and fume and using waste to treat waste.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, relate in particular to a kind of waste water zero discharge treatment process of glass industry.
Background technology
Along with the increasing of country to the environment protection treating dynamics, the glass industry discharge of wastewater requires more and more stricter, and a lot of local waste water " control total amount, qualified discharge " of all changing the past are " zero release "; Reach wastewater zero discharge, habitual in the past way is to adopt the vacuum-evaporation treatment process, and glass industry; Impurity in the waste water (total dissolving contains thing admittedly) mainly is calcium, magnesium salts; And this evaporation unit is the dividing wall type evaporating pot, and very easily fouling, plugging cause systemic breakdown in evaporating course; Need often stop vapour brush jar, and need to consume a large amount of steam resources.
The kiln gas of glass industry will carry out desulfurization before discharging handles, and in first thionizer to flue gas lower the temperature, dedusting.What prior art adopted usually is wet desulfurizing process, and its desulfuration efficiency is higher, need consume great amount of water resources but weak point is wet desulphurization.
Summary of the invention
Goal of the invention: the objective of the invention is to deficiency, a kind of treatment of wastes with processes of wastes against one another is provided, waste water, waste gas two-way treatment, thereby the waste water zero discharge treatment process of realization glass industry to prior art.
Technical scheme: the waste water zero discharge treatment process of glass industry of the present invention, the waste water of glasswork is passed in the wet desulfurizing process system, utilize the heat direct evaporation waste water of kiln gas.Waste water through glass industry is pending is sent to the flue gas desulfurization operation, and this operation needs the kiln gas temperature is cooled to about 65 ℃ from 200～220 ℃, calculates the about 26t/h of process evaporated water with two lines.Article two, glass thread sewage total amount is approximately 15t/h; So can accomplish the wastewater zero discharge requirement fully.Because the waste water of glass industry is mainly from the liquid concentrator of boiler softening water treatment system and the blowdown liquid of circulating water system; The contained impurity of this part waste water mainly is other metals ion of calcium ions and magnesium ions and trace, in sweetening agent regeneration and sludge press filtration process, can remove.Flue gas is with the water direct contact heat transfer, and heat transfer efficiency is high, and does not have problem such as fouling obstruction.
The waste water of glasswork according to the invention is passed in the wet desulfurizing process system through two-way:
Wherein one road waste water passes through MgO material-compound tank, pipeline reactor, dynamic response device and solid-liquid separator successively; The clear liquid of from said solid-liquid separator, separating gets into desulfuration absorbing tower, filter cake outward transport behind the sludge press filtration of from said solid-liquid separator, separating;
Wherein another road waste water gets into dedusting cooling tower and desulfuration absorbing tower respectively after through reservoir.
Comparative optimization ground, getting into the wastewater flow rate of MgO material-compound tank and the mass ratio of MgO is 4: 1, utilizes waste water configuration MgO slurries, utilizes improvement Natural manganese dioxide sulfur removal technology to carry out desulfurization.
Also add in the said pipeline reactor caustic soda soln is arranged; Regulating pH value is 8～10; The MgO slurries that configure carry out regenerative response through induced crystallization technology with absorption liquid at the bottom of the said tower in alkaline environment in pipeline reactor and dynamic response device, reaction equation is following:
The pH value that generates after the process solid-liquid separation is 8～10 absorption clear liquid, sends into cooling and absorbing tower and desulfuration absorbing tower spray again and absorbs SO
2Since be alkaline environment, the most of positively charged ion (Ca in the waste water
2+, Fe
2+, As
2+, Pb
3+Deng) can form mud and remove through solid-liquid separation system.
The present invention compared with prior art; Its beneficial effect is: the present invention will utilize valuable steam dividing wall type evaporation waste water to change in the past and use fume waste heat direct evaporation waste water, and heat transfer efficiency is high, does not have problems such as fouling obstruction; Reach waste water, flue gas bidirectional improvement, the effect of the treatment of wastes with processes of wastes against one another.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Be elaborated in the face of technical scheme of the present invention down, but protection scope of the present invention is not limited to said embodiment.
Embodiment 1: as shown in Figure 1, the waste water zero discharge treatment process of glass industry according to the invention is collected a waste water Lower tank with the waste water unification, delivers to the sulfur removal technology system through waste water pump; In the sulfur removal technology system, former flue gas is successively through effluxing behind dedusting cooling tower, desulfuration absorbing tower and the wet chimney; Waste water is delivered to the heat direct evaporation waste water that utilizes kiln gas after the sulfur removal technology system;
Waste water gets into desulphurization system through two-way:
Wherein one road waste water passes through MgO material-compound tank, pipeline reactor, dynamic response device and solid-liquid separator successively; The clear liquid of from said solid-liquid separator, separating gets into desulfuration absorbing tower; The sludge press filtration of from said solid-liquid separator, separating, filtrating gets into reservoir, the filter cake outward transport;
Getting into the wastewater flow rate of MgO material-compound tank and the mass ratio of MgO is 4: 1, and under the prerequisite that satisfies MgO concentration, unnecessary waste water gets into dedusting cooling tower and desulfuration absorbing tower from another road respectively after through reservoir.
In the above-mentioned circulation; Wherein add caustic soda soln to pipe reaction; Regulate about pH value to 9; Absorption liquid enters into pipeline reactor and dynamic response device at the bottom of the tower in the desulfuration absorbing tower, and in alkaline environment, to carry out the reprocessing cycle reaction equation through induced crystallization technology following with the MgO slurries that configure:
The pH value that generates after the process solid-liquid separation is 8～10 absorption clear liquid, sends into cooling and absorbing tower and desulfuration absorbing tower spray again and absorbs SO
2
From the brine waste that the MgO material-compound tank adds, participate in the whole process system of desulfurization, in this process, owing to be alkaline environment, the positively charged ion (Ca of waste water the inside
2+, Fe
2+, As
2+, Pb
3+Deng) can form mud and remove.Sewage gets into thionizer and cooling gas wash tower at last, and the flue gas direct evaporation that is come out by glass furnace effluxes from thionizer cat head flue.Join the waste water of reservoir, the waste water that goes out with filter press gets into desulfuration absorbing tower and cooling gas wash tower together, and the flue gas direct evaporation that is come out by kiln falls.The impurity of waste water the inside gets into backflow pool, gets into pipeline reactor together with the MgO slurries, participates in the whole technological process of desulfurization and removes.
If the sulfur removal technology system is limited to the treatment capacity of waste water, can the water reuse prior art in the part reservoir be evaporated, crystallisation by cooling, the sal epsom product drying and packaging that obtains.
As stated, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the accompanying claims definition, can make various variations in form with on the details to it.
Claims (5)
1. the waste water zero discharge treatment process of a glass industry is characterized in that: the waste water of glasswork is passed in the wet desulfurizing process system, utilizes the heat direct evaporation waste water of kiln gas.
2. the waste water zero discharge treatment process of glass industry according to claim 1, it is characterized in that: the waste water of said glasswork is passed in the wet desulfurizing process system through two-way:
Wherein one road waste water passes through MgO material-compound tank, pipeline reactor, dynamic response device and solid-liquid separator successively; The clear liquid of from said solid-liquid separator, separating gets into desulfuration absorbing tower, filter cake outward transport behind the sludge press filtration of from said solid-liquid separator, separating;
Wherein another road waste water gets into dedusting cooling tower and desulfuration absorbing tower respectively after through reservoir.
3. the waste water zero discharge treatment process of glass industry according to claim 2 is characterized in that: getting into the wastewater flow rate of MgO material-compound tank and the mass ratio of MgO is 4: 1.
4. the waste water zero discharge treatment process of glass industry according to claim 2 is characterized in that: absorption liquid enters into said pipeline reactor and circulates at the bottom of the tower in the said desulfuration absorbing tower.
5. the waste water zero discharge treatment process of glass industry according to claim 4; It is characterized in that: also adding in the said pipeline reactor has caustic soda soln; Regulating pH value is 8～10; The MgO slurries that configure carry out regenerative response through induced crystallization technology with absorption liquid at the bottom of the said tower in alkaline environment in pipeline reactor and dynamic response device, reaction equation is following:
The pH value that generates after the process solid-liquid separation is 8～10 absorption clear liquid, sends into cooling and absorbing tower and desulfuration absorbing tower spray again and absorbs SO
2
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110256975 CN102328966B (en) | 2011-09-02 | 2011-09-02 | Wastewater zero emission treatment process in glass industry |
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|---|---|---|---|
| CN 201110256975 CN102328966B (en) | 2011-09-02 | 2011-09-02 | Wastewater zero emission treatment process in glass industry |
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| CN102328966A true CN102328966A (en) | 2012-01-25 |
| CN102328966B CN102328966B (en) | 2013-07-10 |
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| CN 201110256975 Expired - Fee Related CN102328966B (en) | 2011-09-02 | 2011-09-02 | Wastewater zero emission treatment process in glass industry |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726867A (en) * | 2017-09-28 | 2018-02-23 | 安徽省金鸿再生资源科技有限公司 | A kind of vacuum drying oven discharging opening material quickly cooling dust pelletizing system |
| CN114314724A (en) * | 2022-01-05 | 2022-04-12 | 四川雄港玻璃有限公司 | Glass production sewage treatment circulation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6041529A (en) * | 1983-08-12 | 1985-03-05 | Mitsubishi Heavy Ind Ltd | Treatment of waste liquid in waste gas treating apparatus |
| CN101234283A (en) * | 2007-11-19 | 2008-08-06 | 胡俊华 | Dilute solution magnesium calcium dual alkali flue gas desulfurization technique |
| CN101628199A (en) * | 2008-07-17 | 2010-01-20 | 中国石化集团宁波工程有限公司 | Improved magnesium method flue gas desulphurization technique |
| CN101844819A (en) * | 2010-05-21 | 2010-09-29 | 重庆大学 | Spray evaporation treatment method of wet method flue gas desulfurization wastewater in thermal power station |
-
2011
- 2011-09-02 CN CN 201110256975 patent/CN102328966B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6041529A (en) * | 1983-08-12 | 1985-03-05 | Mitsubishi Heavy Ind Ltd | Treatment of waste liquid in waste gas treating apparatus |
| CN101234283A (en) * | 2007-11-19 | 2008-08-06 | 胡俊华 | Dilute solution magnesium calcium dual alkali flue gas desulfurization technique |
| CN101628199A (en) * | 2008-07-17 | 2010-01-20 | 中国石化集团宁波工程有限公司 | Improved magnesium method flue gas desulphurization technique |
| CN101844819A (en) * | 2010-05-21 | 2010-09-29 | 重庆大学 | Spray evaporation treatment method of wet method flue gas desulfurization wastewater in thermal power station |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726867A (en) * | 2017-09-28 | 2018-02-23 | 安徽省金鸿再生资源科技有限公司 | A kind of vacuum drying oven discharging opening material quickly cooling dust pelletizing system |
| CN107726867B (en) * | 2017-09-28 | 2019-07-12 | 安徽省金鸿再生资源科技有限公司 | A kind of vacuum drying oven discharge port material quickly cooling dust pelletizing system |
| CN114314724A (en) * | 2022-01-05 | 2022-04-12 | 四川雄港玻璃有限公司 | Glass production sewage treatment circulation system |
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| CN102328966B (en) | 2013-07-10 |
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