CN103819027A - Joint treatment method for various types of sewage - Google Patents
Joint treatment method for various types of sewage Download PDFInfo
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- CN103819027A CN103819027A CN201410092813.8A CN201410092813A CN103819027A CN 103819027 A CN103819027 A CN 103819027A CN 201410092813 A CN201410092813 A CN 201410092813A CN 103819027 A CN103819027 A CN 103819027A
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Abstract
The invention discloses a joint treatment method for various types of sewage. Through utilizing the double characters of calcium hydroxide, the method comprises the following steps: firstly, calcium hydroxide is added to neutralize acid in acidiferous sewage; secondly, the neutralized acidiferous sewage is mixed with sewage containing sulfate radicals; thirdly, the mixed sewage is filtered and waste residues in the mixed sewage are removed, pretreated sewage is obtained and discharged into a sewage treatment system, and the aim of removing sulfate radicals and acidic materials at the same time is achieved. The invention has the benefits that the method is low in cost and nontoxic; the defect that the sewage treatment system in the prior art is incapable of treating the two types of sewage at the same time is solved; the method belongs to the pretreatment method of sewage treatment system.
Description
Technical field
What the present invention relates to is a kind of method of wastewater treatment, in particular a kind of combination treatment method of dissimilar waste water.
Background technology
In the production process of factory, can produce dissimilar waste water, this has caused very large trouble with regard to the processing of giving waste water, for example certain produces the factory of acidification oil and epoxy plasticizer, in the process of producing acidification oil, can produce the waste water containing the sodium sulfate of high density, and in the production process of epoxy plasticizer, can produce certain density formic acid, sulfuric acid etc. are containing sour waste water, if these two kinds of waste water are mixed to processing, so too high sulfate radical will produce too high hydrogen sulfide waste gas in acid waste water, and hydrogen sulfide is a kind of toxic gas of foul smelling taste, contaminate environment.Therefore, need to find a kind of system of these two kinds of dissimilar waste water of energy combination treatment, make the waste water of containing sulfate radicals and can obtain pre-treatment containing sour waste water simultaneously, to guarantee the normal operation of biochemical sewage treatment system.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of combination treatment method of dissimilar waste water is provided, to find a kind of waste water that can process containing sulfate radicals, can process again the combination treatment method containing sour waste water.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
A kind of combination treatment method of dissimilar waste water, the waste water that described dissimilar waste water is containing sulfate radicals and containing sour waste water, first calcium hydroxide is added containing neutralizing acid in sour waste water, again by mixing with the waste water of containing sulfate radicals containing sour waste water after neutralization, waste residue is removed in press filtration, obtain pretreated waste water, enter in Waste Water Treatment.
Preferably, the add-on of described calcium hydroxide be every 100 tons containing the calcium hydroxide that adds 1～5 ton in sour waste water.
Preferably, described is containing one or more the waste water in formic acid, sulfuric acid, hydrochloric acid and hydrogen peroxide containing sour waste water.
Preferably, described Waste Water Treatment is biochemical sewage treatment system.
Principle of work of the present invention is: the present invention is by directly throwing in calcium hydroxide to containing in sour waste water, because calcium hydroxide is originally as alkalescence, can neutralizing acid, thereby remove the acidic substance in waste water, meanwhile, due to neutralization reaction, the solubleness of calcium hydroxide in waste water is improved greatly, calcium ion is wherein dissociated out, and free calcium ion reacts with sulfate ion and generates calcium sulfate precipitation, reaches the object of removing sulfate radical.
The present invention has the following advantages compared to existing technology: the combination treatment method that the invention provides a kind of dissimilar waste water, the method has been avoided mixing the rear hydrogen sulfide producing containing the waste water of sour waste water and containing sulfate radicals and has been poisoned follow-up Waste Water Treatment, avoided the generation of foul smell simultaneously, solve the defect that can not simultaneously process the waste water of acid-bearing wastewater and containing sulfate radicals in prior art, belonged to the front pretreatment process of Waste Water Treatment; Meanwhile, in the method, calcium hydroxide is cheap and nontoxic, and the byproduct calcium sulfate of generation can, directly as by-product sale, improve the utilization ratio of by product greatly, is a kind of pretreatment process of dissimilar waste water with low cost.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
The present embodiment is a kind of waste water combination treatment method, comprises the following steps:
(1) producing in the factory of acidification oil and epoxy plasticizer, the waste water containing formic acid and hydrogen peroxide of producing epoxy plasticizer workshop is entered to waste water treatment tank;
(2) every 100 tons add 1 ton of calcium hydroxide containing in sour waste water, mix, and the acid in waste water is neutralized completely;
(3) waste water of containing sulfate radicals of producing acidification oil workshop is entered after the neutralization of above-mentioned steps (2) containing in sour waste water, mix, with the press filtration of waste residue pressure filter, remove waste residue, obtain pretreated waste water;
(4) pretreated waste water of above-mentioned steps (4) is entered and in biochemical sewage treatment system, do further processing.
Embodiment 2
The another kind of waste water combination treatment method of the present embodiment, comprises the following steps:
(1) producing in the factory of acidification oil and epoxy plasticizer, the waste water containing formic acid and sulfuric acid of producing epoxy plasticizer workshop is entered to waste water treatment tank;
(2) every 100 tons add 5 tons of calcium hydroxides containing in sour waste water, mix, and the acid in waste water is neutralized completely;
(3) waste water of containing sulfate radicals of producing acidification oil workshop is entered in the waste water treatment tank containing sour waste water after the neutralization of above-mentioned steps (2), mix, with the press filtration of waste residue pressure filter, remove waste residue, obtain pretreated waste water;
(4) pretreated waste water of above-mentioned steps (4) is entered and in biochemical sewage treatment system, do further processing.
Embodiment 3
The another kind of waste water combination treatment method of the present embodiment, comprises the following steps:
(1) producing in the factory of acidification oil and epoxy plasticizer, the waste water of the hydrochloric and sulfuric acid of producing epoxy plasticizer workshop is entered to waste water treatment tank;
(2) every 100 tons add 2.5 tons of calcium hydroxides containing in sour waste water, mix, and the acid in waste water is neutralized completely;
(3) waste water of containing sulfate radicals of producing acidification oil workshop is entered in the waste water treatment tank containing sour waste water after the neutralization of above-mentioned steps (2), mix, with the press filtration of waste residue pressure filter, remove waste residue, obtain pretreated waste water;
(4) in biochemical sewage treatment system, do further processing by entering in the pretreated waste water of above-mentioned steps (4).
Claims (4)
1. the combination treatment method of a dissimilar waste water, the waste water that described dissimilar waste water is containing sulfate radicals and containing sour waste water, it is characterized in that, described combination treatment method is: first calcium hydroxide is added containing neutralizing acid in sour waste water, again by mixing with the waste water of containing sulfate radicals containing sour waste water after neutralization, waste residue is removed in press filtration, obtains pretreated waste water, enters in Waste Water Treatment.
2. the combination treatment method of a kind of dissimilar waste water as claimed in claim 1, is characterized in that, the add-on of described calcium hydroxide be every 100 tons containing the calcium hydroxide that adds 1～5 ton in sour waste water.
3. the combination treatment method of a kind of dissimilar waste water as claimed in claim 1, is characterized in that, described is containing one or more the waste water in formic acid, sulfuric acid, hydrochloric acid and hydrogen peroxide containing sour waste water.
4. the combination treatment method of a kind of dissimilar waste water as claimed in claim 1, is characterized in that, described Waste Water Treatment is biochemical sewage treatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410092813.8A CN103819027A (en) | 2014-03-13 | 2014-03-13 | Joint treatment method for various types of sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410092813.8A CN103819027A (en) | 2014-03-13 | 2014-03-13 | Joint treatment method for various types of sewage |
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| Publication Number | Publication Date |
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| CN103819027A true CN103819027A (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410092813.8A Pending CN103819027A (en) | 2014-03-13 | 2014-03-13 | Joint treatment method for various types of sewage |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB299073A (en) * | 1927-05-17 | 1928-10-17 | James Gordon | Process for conditioning or treating water in boilers and the like to prevent incrustation and corrosion |
| JPH0240288A (en) * | 1988-07-29 | 1990-02-09 | Nippon Kemitetsuku Kk | Production of calcium sulfate from slurry of waste liquid |
| CN1532149A (en) * | 2003-03-18 | 2004-09-29 | 李晓里 | Utilizing method for waste sulfuric radical |
| CN101386455A (en) * | 2008-10-30 | 2009-03-18 | 常州星海半导体器件有限公司 | Method for treating waste water after workpiece tinplating |
| CN101434449A (en) * | 2008-12-01 | 2009-05-20 | 北京博奇电力科技有限公司 | Method for processing red mud slurry |
| WO2011118808A1 (en) * | 2010-03-26 | 2011-09-29 | 千代田化工建設株式会社 | Treatment method of wastewater containing persistent substances |
| CN102211828A (en) * | 2011-04-29 | 2011-10-12 | 上海美伽水处理技术有限公司 | Method for sludge reduction for cold rolling pickling wastewater in steel industry |
-
2014
- 2014-03-13 CN CN201410092813.8A patent/CN103819027A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB299073A (en) * | 1927-05-17 | 1928-10-17 | James Gordon | Process for conditioning or treating water in boilers and the like to prevent incrustation and corrosion |
| JPH0240288A (en) * | 1988-07-29 | 1990-02-09 | Nippon Kemitetsuku Kk | Production of calcium sulfate from slurry of waste liquid |
| CN1532149A (en) * | 2003-03-18 | 2004-09-29 | 李晓里 | Utilizing method for waste sulfuric radical |
| CN101386455A (en) * | 2008-10-30 | 2009-03-18 | 常州星海半导体器件有限公司 | Method for treating waste water after workpiece tinplating |
| CN101434449A (en) * | 2008-12-01 | 2009-05-20 | 北京博奇电力科技有限公司 | Method for processing red mud slurry |
| WO2011118808A1 (en) * | 2010-03-26 | 2011-09-29 | 千代田化工建設株式会社 | Treatment method of wastewater containing persistent substances |
| CN102211828A (en) * | 2011-04-29 | 2011-10-12 | 上海美伽水处理技术有限公司 | Method for sludge reduction for cold rolling pickling wastewater in steel industry |
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Application publication date: 20140528 |