CN103663777A - Method for treating hydrofluoric-acid-containing waste water from factory - Google Patents
Method for treating hydrofluoric-acid-containing waste water from factory Download PDFInfo
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- CN103663777A CN103663777A CN201310570200.6A CN201310570200A CN103663777A CN 103663777 A CN103663777 A CN 103663777A CN 201310570200 A CN201310570200 A CN 201310570200A CN 103663777 A CN103663777 A CN 103663777A
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Abstract
The invention relates to a method for treating hydrofluoric-acid-containing waste water from a factory. The process flow comprises the following steps: feeding hydrofluoric-acid-containing waste water into an acid storage barrel, regulating with alkali/oil-containing waste water, performing oil-water separation, performing comprehensive waste water regulation, regulating the pH value, performing chemical reaction, coagulating, flocculating, precipitating, filtering, collecting through fluoride ion adsorption, performing resin exchange, regulating the pH value, and performing up-to-standard discharge. The method provided by the invention has the remarkable advantages of low cost, low energy consumption, easy maintenance, no air pollution and no environmental pollution.
Description
Technical field
The invention belongs to Industrial Wastewater Treatment, especially factory's hydrofluoric acid containing method of wastewater treatment technical field.
Background technology
Factory, for the processing of spent acid, adopts roasting method conventionally.There is the drawbacks such as investment is large, energy consumption is high, Maintenance Difficulty, air, environmental pollution in roasting method.
Summary of the invention
Object of the present invention provides that a kind of cost is low, energy consumption is little just in order to overcome the defect that above-mentioned prior art exists, easy care, factory's hydrofluoric acid containing method of wastewater treatment of polluted air, environment not.
The object of the invention is to realize by following technical solution.
Factory's hydrofluoric acid containing method of wastewater treatment, feature of the present invention is that technical process is:
Hydrofluoric acid containing waste water-acid-storing barrel-containing alkali, oily waste water adjusting-oily water separation-comprehensive wastewater adjusting-pH regulator-chemistry reflection-coagulation-flocculation-precipitation-filtration-fluorion absorptive collection-resins exchange-pH regulator-qualified discharge, that is: by factory's oil-containing, containing the hydrofluoric acid waste water of alkali, pour in spent acid bucket and store, acid, alkali neutralizes voluntarily, through acid proof pump suction oil eliminator, make water, separating of oil, excessive fuel consumption is reclaimed by collector, hydrofluoric acid containing waste water enters comprehensive adjustment pond and adds milk of lime to regulate potential of hydrogen to pH=8～9, milk of lime consumption determines according to humble and shabby waste strength, utilize calcium chloride and fluorion reflection in milk of lime to generate Calcium Fluoride (Fluorspan), again utilize water pump suction reaction tank to add calcium chloride 30%～40% concentration preparation, make it again to generate Calcium Fluoride (Fluorspan) with fluorion reflection, waste water flows into coagulation basin and adds 20%～30% concentration polymerize aluminum chloride preparation simultaneously, make it flocculation and form alumen ustum, enter enhancing flocculation basin, add by the polyacrylamide preparation of 1:2000 preparation simultaneously, form block throw out, flowing into inclined-plate clarifying basin precipitates.
The invention has the beneficial effects as follows to have that cost is low, energy consumption is little, an easy care, not polluted air, remarkable advantage free from environmental pollution.
Embodiment
Factory's hydrofluoric acid containing method of wastewater treatment, technical process is: hydrofluoric acid containing waste water-acid-storing barrel-containing alkali, oily waste water adjusting-oily water separation-comprehensive wastewater adjusting-pH regulator-chemistry reflection-coagulation-flocculation-precipitation-filtration-fluorion absorptive collection-resins exchange-pH regulator-qualified discharge, that is: by factory's oil-containing, containing the hydrofluoric acid waste water of alkali, pour in spent acid bucket and store, acid, alkali neutralizes voluntarily, through acid proof pump suction oil eliminator, make water, separating of oil, excessive fuel consumption is reclaimed by collector, hydrofluoric acid containing waste water enters comprehensive adjustment pond and adds milk of lime to regulate potential of hydrogen to pH=8～9, milk of lime consumption determines according to humble and shabby waste strength, utilize calcium chloride and fluorion reflection in milk of lime to generate Calcium Fluoride (Fluorspan), again utilize water pump suction reaction tank to add calcium chloride 30%～40% concentration preparation, make it again to generate Calcium Fluoride (Fluorspan) with fluorion reflection, waste water flows into coagulation basin and adds 20%～30% concentration polymerize aluminum chloride preparation simultaneously, make it flocculation and form alumen ustum, enter enhancing flocculation basin, add by the polyacrylamide preparation of 1:2000 preparation simultaneously, form block throw out, flowing into inclined-plate clarifying basin precipitates.
The reaction process precipitating to inflow inclined-plate clarifying basin from entering comprehensive adjustment pond, discharge has determined the reaction times, should guarantee that calcium chloride fully reacts with fluorion, in the situation that fluorion effectively reduces, suitably tunes up wastewater flow, thereby improves operating rate.Conventionally this system possesses 8 cubes of ms/h of processing poweies.
By after treatment step above, waste acid water pH value is adjusted, and fluorion significantly lowers, and as fluorion is now controlled in GB allowed band, current during by second-stage treatment pond, need not drop into chemical treatment again; Otherwise in second-stage treatment pond, repeat low-level culture pool step, fluorion is controlled at below requirement.
Middle water now enters clean water basin, and according to the online pH monitoring count value of second-stage treatment pond outlet, automatic feeding contains in acid supplement and regulates pH value simultaneously; Substantially qualified middle water, enters strainer, does not precipitate throw out completely in filtered water.
Current further enter fluorion adsorption trap, and the residual fluorion in absorptive collection in water further reduces the fluorion in water; Current, by resins exchange device, remove salt in water (calcium ions and magnesium ions).
Now, the clear water of handling well reaches a national class emission standard completely, and clear water can be used or use as greening water by secondary.
The throw out producing in treating processes, by being collected into sludge thickener, utilizes water pump pressurization to enter plate type pressure filter, and dehydration forms block and collects, and can be used as smelting factory additive and uses.
Embodiment mono-
By factory's oil-containing, containing the hydrofluoric acid waste water of alkali, pour in spent acid bucket and store, acid, alkali neutralizes voluntarily, through acid proof pump suction oil eliminator, make water, separating of oil, excessive fuel consumption is reclaimed by collector, hydrofluoric acid containing waste water enters comprehensive adjustment pond and adds milk of lime to regulate potential of hydrogen to pH=8, milk of lime consumption determines according to humble and shabby waste strength, utilize calcium chloride and fluorion reflection in milk of lime to generate Calcium Fluoride (Fluorspan), again utilize water pump suction reaction tank to add calcium chloride 30% concentration preparation, make it again to generate Calcium Fluoride (Fluorspan) with fluorion reflection, waste water flows into coagulation basin and adds 30% concentration polymerize aluminum chloride preparation simultaneously, make it flocculation and form alumen ustum, enter enhancing flocculation basin, add by the polyacrylamide preparation of 1:2000 preparation simultaneously, form block throw out, flowing into inclined-plate clarifying basin precipitates.
Embodiment bis-
By factory's oil-containing, containing the hydrofluoric acid waste water of alkali, pour in spent acid bucket and store, acid, alkali neutralizes voluntarily, through acid proof pump suction oil eliminator, make water, separating of oil, excessive fuel consumption is reclaimed by collector, hydrofluoric acid containing waste water enters comprehensive adjustment pond and adds milk of lime to regulate potential of hydrogen to pH=9, milk of lime consumption determines according to humble and shabby waste strength, utilize calcium chloride and fluorion reflection in milk of lime to generate Calcium Fluoride (Fluorspan), again utilize water pump suction reaction tank to add calcium chloride 40% concentration preparation, make it again to generate Calcium Fluoride (Fluorspan) with fluorion reflection, waste water flows into coagulation basin and adds 20% concentration polymerize aluminum chloride preparation simultaneously, make it flocculation and form alumen ustum, enter enhancing flocculation basin, add by the polyacrylamide preparation of 1:2000 preparation simultaneously, form block throw out, flowing into inclined-plate clarifying basin precipitates.
Claims (1)
1.Yi Zhong factory hydrofluoric acid containing method of wastewater treatment, is characterized in that, technical process is:
Hydrofluoric acid containing waste water-acid-storing barrel-containing alkali, oily waste water adjusting-oily water separation-comprehensive wastewater adjusting-pH regulator-chemistry reflection-coagulation-flocculation-precipitation-filtration-fluorion absorptive collection-resins exchange-pH regulator-qualified discharge, that is: by factory's oil-containing, containing the hydrofluoric acid waste water of alkali, pour in spent acid bucket and store, acid, alkali neutralizes voluntarily, through acid proof pump suction oil eliminator, make water, separating of oil, excessive fuel consumption is reclaimed by collector, hydrofluoric acid containing waste water enters comprehensive adjustment pond and adds milk of lime to regulate potential of hydrogen to pH=8～9, milk of lime consumption determines according to humble and shabby waste strength, utilize calcium chloride and fluorion reflection in milk of lime to generate Calcium Fluoride (Fluorspan), again utilize water pump suction reaction tank to add calcium chloride 30%～40% concentration preparation, make it again to generate Calcium Fluoride (Fluorspan) with fluorion reflection, waste water flows into coagulation basin and adds 20%～30% concentration polymerize aluminum chloride preparation simultaneously, make it flocculation and form alumen ustum, enter enhancing flocculation basin, add by the polyacrylamide preparation of 1:2000 preparation simultaneously, form block throw out, flowing into inclined-plate clarifying basin precipitates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310570200.6A CN103663777B (en) | 2013-11-16 | 2013-11-16 | A kind of factory hydrofluoric acid containing method of wastewater treatment |
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| CN201310570200.6A CN103663777B (en) | 2013-11-16 | 2013-11-16 | A kind of factory hydrofluoric acid containing method of wastewater treatment |
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| Publication Number | Publication Date |
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| CN103663777A true CN103663777A (en) | 2014-03-26 |
| CN103663777B CN103663777B (en) | 2016-06-01 |
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| CN201310570200.6A Active CN103663777B (en) | 2013-11-16 | 2013-11-16 | A kind of factory hydrofluoric acid containing method of wastewater treatment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600977A (en) * | 2014-11-13 | 2016-05-25 | Osk有限责任公司 | Treating method for waste water contaning fluoroboric acid produced in etch process |
| CN106746036A (en) * | 2017-03-15 | 2017-05-31 | 福建欣宇卫浴科技股份有限公司 | Stainless steel acid cleaning waste water processing system |
| CN108128935A (en) * | 2018-01-23 | 2018-06-08 | 山西绿洁环保有限公司 | A kind of method and apparatus of FLUORIDE REMOVAL IN WASTEWATER |
| CN108218027A (en) * | 2017-12-27 | 2018-06-29 | 北京泰豪智能工程有限公司 | A kind of sampling of water quality cleaning equipment |
| CN109336213A (en) * | 2018-09-27 | 2019-02-15 | 中核四0四有限公司 | One kind being used for UO2The processing method of hydrofluorination tail gas condensing liquid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302438A (en) * | 2008-06-11 | 2008-11-12 | 华东理工大学 | Method and apparatus for removing alkali in acid soluble oil containing alkaline impurities |
| CN101402493A (en) * | 2008-10-31 | 2009-04-08 | 浙江汉盛氟化学有限公司 | Method for treating high-fluorine sewage water |
| CN202072566U (en) * | 2011-05-18 | 2011-12-14 | 无锡市新都环保设备有限公司 | Treatment system for waste water containing high-concentration hydrofluoric acid |
-
2013
- 2013-11-16 CN CN201310570200.6A patent/CN103663777B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302438A (en) * | 2008-06-11 | 2008-11-12 | 华东理工大学 | Method and apparatus for removing alkali in acid soluble oil containing alkaline impurities |
| CN101402493A (en) * | 2008-10-31 | 2009-04-08 | 浙江汉盛氟化学有限公司 | Method for treating high-fluorine sewage water |
| CN202072566U (en) * | 2011-05-18 | 2011-12-14 | 无锡市新都环保设备有限公司 | Treatment system for waste water containing high-concentration hydrofluoric acid |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600977A (en) * | 2014-11-13 | 2016-05-25 | Osk有限责任公司 | Treating method for waste water contaning fluoroboric acid produced in etch process |
| CN106746036A (en) * | 2017-03-15 | 2017-05-31 | 福建欣宇卫浴科技股份有限公司 | Stainless steel acid cleaning waste water processing system |
| CN106746036B (en) * | 2017-03-15 | 2024-01-05 | 福建希海环保科技有限公司 | Stainless steel pickling wastewater treatment system |
| CN108218027A (en) * | 2017-12-27 | 2018-06-29 | 北京泰豪智能工程有限公司 | A kind of sampling of water quality cleaning equipment |
| CN108128935A (en) * | 2018-01-23 | 2018-06-08 | 山西绿洁环保有限公司 | A kind of method and apparatus of FLUORIDE REMOVAL IN WASTEWATER |
| CN109336213A (en) * | 2018-09-27 | 2019-02-15 | 中核四0四有限公司 | One kind being used for UO2The processing method of hydrofluorination tail gas condensing liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103663777B (en) | 2016-06-01 |
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