CN105084581A - Sewage treatment method for acetylene production - Google Patents
Sewage treatment method for acetylene production Download PDFInfo
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- CN105084581A CN105084581A CN201410207817.6A CN201410207817A CN105084581A CN 105084581 A CN105084581 A CN 105084581A CN 201410207817 A CN201410207817 A CN 201410207817A CN 105084581 A CN105084581 A CN 105084581A
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- sewage
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Abstract
A sewage treatment method for acetylene production is characterized by comprising the following steps: 1) sewage is collected together in a primary sedimentation basin to undergo primary sedimentation treatment, and pH value of sewage is adjusted to 7-8; the sewage which has undergone primary sedimentation treatment undergoes lifting and pressurization, and then the sewage undergoes differential pressure type filtration and the sewage is conveyed to a secondary sedimentation basin to undergo secondary sedimentation treatment; 2) sodium hypochlorite is added into the secondary settled sewage, no-effluent aeration is carried out to remove organic matters in the sewage, and the sewage undergoes secondary filtrating overflow and then enters a third sedimentation basin to undergo third sedimentation treatment; and 3) the sewage undergoes third sedimentation treatment so as to meet index requirements of industrial acetylene production.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, especially relate to and will be back to a kind of sewage water treatment method for acetylene of industrial acetylene after sewage disposal.
Background technology
People industrially acetylene mainly adopt calcium carbide and water reaction method to produce acetylene gas, and its reaction formula is CaC
2+ 2H
2o → CaOH
2+ C
2h
2., need a large amount of water.And China is the country that a water resources compares shortage, along with life and process water are to the continuous exploitation of underground water, cause again the continuous decline of water level further, more exacerbate the shortage of water resources.And the process discharge of the industrial sewage produced in production in current all trades and professions is a urgent problem, as the industrial sewage that chlor-alkali production industry produces, its pH value reaches 9-11, in it SS up to about 150 mg/litre, COD up to 170 mg/litre, BOD
5up to 29 mg/litre, NH
3-N, up to 6 mg/litre, needs to process before discharging.If industrial sewage suitably to be processed the use water that Posterior circle is used in industrial acetylene water or other field; not only reach water resources and carry out recycle to solve shortage of water resources problem; and the zero release of industrial sewage can be reached, effective protection of the environment.The method that current people are used for processing trade effluent and sanitary sewage mainly adopts the precipitator method and biological activity method, the former only can remove the levitated objects such as the silt in black water, for the organism in water, then there is no good removal effect, the requirement of acetylene water can not be reached; Although and the latter is better to the suspended solids such as mud and organic removal effect, can reach the requirement of acetylene water, investment is large, produces operating cost high.
Summary of the invention
Technical problem to be solved by this invention there is provided a kind of can saving water resource and treatment process is simple, production cost is low and adapt to a kind of sewage water treatment method for acetylene that acetylene industrial process waters requires completely.
A kind of sewage water treatment method for acetylene of the present invention, comprises the following steps:
1) sewage is come together in first stage precipitation tank carry out one-level precipitation process, adjustment pH value of sewage water 7-8; And carry out two-stage precipitation process by being delivered to second-level settling pond through differential pressure type filtration after the sewage lifting pressurization after one-level precipitation process; According to Production design requirement, being provided with first stage precipitation tank, for collecting industrial production, sanitary sewage, and carrying out preliminary precipitation, to remove the suspended solids such as silt; Simultaneously because the soda acid content of industrial sewage is higher, so adjust by adding the pH value of HCl or NaOH to sewage in sewage, and can carry out by pH detection meter the add-on that pH detection adjusts soda acid at any time, determined the add-on of soda acid by the pH value detected, this is known general knowledge concerning those skilled in the art; If pH value of sewage water meets the requirements, then through lift pump the sewage lifting after one-level precipitation process can be pressurizeed and be transported to second-level settling pond after filtering and further sedimentation, floating be carried out to solid suspended particles such as the impurity contained, and as undesirable, then can add the pH value of HCl or NaOH to sewage further to adjust, to meet the requirements; Differential pressure type after sewage lifting pressurization can be adopted to add the pH value of HCl or NaOH to sewage before filtering to be adjusted so that subsequent disposal, its pH value of production waste as current chlor-alkali industry can reach 11-12, so add HCl mode carry out adjusted to ph by being provided with mixing tank in lift pump exit in sewage, improve mixture homogeneity, and detect by pH the add-on that the detection counted adjusts HCl, make pH value reach the requirement of 7-8.Filtration can adopt Intelligent differential pressure filtering machine to filter sewage, to improve the filtration, purification effect to sewage, and by detecting filter effect, if filter and reach requirement, second-level settling pond can be entered and carry out two-stage precipitation process, as do not reached requirement, then filtration can be re-started; And if filter after sewage meet acetylene industrial process waters index through monitoring its every finger, then can be delivered directly to production process for the production of;
2) to two-stage precipitation sewage add clorox and vacancy reason of exposing to the sun to eliminate organism in sewage, then sewage overflow after cascade filtration enters three grades of settling tanks and carries out three grades of precipitation process, after first stage precipitation tank process, the suspended solids object particles such as the silt in sewage are removed totally substantially, but organic cod, BOD in sewage
5, NH
3-N value is all higher, so the organism needing to remove in sewage is to meet the requirement of acetylene industrial process waters index, adopt and in sewage, add clorox and carry out vacancy reason of exposing to the sun, with effectively decompose in sewage containing cyanogen, phosphorous, sulfur-bearing and nitrogenous substances, various high chroma organism etc. are difficult to the various organic substances by common empty oxidation removing of exposing to the sun, the rock steady structure of the nearly all organic molecule of rapid destruction, make it to change into completely harmless inorganics or harmless easy-to-handle organic substance, and by the detection be respectively worth organism, the add-on of adjustment clorox, organism in sewage is respectively worth and reaches COD≤110.8 mg/litre, BOD
5≤ 22.4 mg/litre, NH
3-N≤5.2 mg/litre, total mercury≤0.004 mg/litre, to meet acetylene industrial process waters index, and adjusted the add-on of clorox by the sewage index value detected, this is known general knowledge concerning those skilled in the art, then enter three grades of settling tanks through cascade filtration overflow and carry out three grades of precipitation process, and detect filter effect at any time, and by detecting filter effect, if filter and reach requirement, three grades of settling tanks can be entered and carry out three grades of precipitation process, as do not reached requirement, then filtration can be re-started.Cascade filtration can adopt the filtration unit that saw flower and gac are housed, and to improve filter effect, also improves the repeating utilization factor of filtration unit.
3) sewage reaches the index request of industrial acetylene through three grades of precipitation process, and sewage promotes to store and is used as acetylene water after three grades of precipitation process are qualified.Precipitating by the various component target of detection control at three grades is pH value 7-8, SS≤73.6 mg/litre, COD≤110.8 mg/litre, BOD
5≤ 22.4 mg/litre, NH
3-N≤5.2 mg/litre, total mercury≤0.004 mg/litre, to process the needs being met industrial acetylene water completely, promotes storage by lift pump and goes in the industrial production of acetylene.And further can be processed by the laggard row of monitoring, for ecological water such as cultivation and irrigating plants, the ecological pool be provided with specially also can be stored in for subsequent use.
This is adopted to be used for the sewage water treatment method of acetylene, method is simple, be easy to control, operating cost is low, water after the method process can be applicable to acetylene industrial process waters completely, solves acetylene industrial production and uses the disadvantageous effect caused groundwater resource, not only saved water resources, reduce acetylene expense, the environmental pollution that the discharge also reducing sanitary sewage and trade effluent causes.
Embodiment
Embodiment one
Have first stage precipitation tank, second-level settling pond and three grades of settling tanks respectively, first stage precipitation tank second-level settling pond and three grades of visual sewage loads of settling tank are provided with several to the process of sewage to be conducive to the recycle of sewage.Industrial production sewage and sanitary sewage import first stage precipitation tank, and in sewage, each index is pH value 10.44, SS is after testing 147.27 mg/litre, and COD is 166.55 mg/litre, BOD
5be 29.01 mg/litre, NH
3-N is 5.22 mg/litre, total mercury is 0.0046 mg/litre, the particulate matter of one-level precipitation process except major part suspension in decontaminated water is carried out by first stage precipitation tank, and be provided with pH detect meter detect pH value of sewage water at any time, oettIed sewage is promoted pressurization through pump filter through differential pressure type, after the impurity that decontaminated water includes, by the detection to filter sewage, if filter and reach requirement, be delivered to second-level settling pond and carry out two-stage precipitation process with the granule foreign included except decontaminated water further, as do not reached requirement, then filtration can be re-started; And by monitoring to the pH value of sewage, the mixing tank that adjustment is arranged on pump discharge place adds HCl to carry out being adjusted to pH value 7-8;
In second-level settling pond process, clorox is added to sewage, by its Strong oxdiative performance, the various organic substances being difficult to by common empty oxidation removing of exposing to the sun containing cyanogen, phosphorous, sulfur-bearing and nitrogenous substances, various high chroma organism etc. in effective decomposition sewage, the rock steady structure of rapid destruction organic molecule, make it to change into completely harmless inorganics or harmless easy-to-handle organic substance, and sky precipitation process of exposing to the sun is to eliminate organism in sewage, and passes through COD, BOD in sewage
5, NH
3the detection of-N and total mercury, the add-on of adjustment clorox is to meet processing requirements, then the filtration unit by being equipped with saw flower and gac carries out filtrating overflow, detect filter effect, if filter and reach requirement, entering three grades of settling tanks and carry out three grades of precipitation process, as do not reached requirement, then can re-start filtration;
After sewage carries out precipitation process in three grades of settling tanks, each index of detection sewage is pH value 7.77, SS is 72.21 mg/litre, and COD is 110.73 mg/litre, BOD
5be 21.45 mg/litre, NH
3-N is 5.03 mg/litre, and total mercury is 0.0035 mg/litre, meets the needs of industrial acetylene water completely, promotes storage in the industrial production of acetylene by lift pump.
Embodiment two
Have first stage precipitation tank, second-level settling pond and three grades of settling tanks respectively, first stage precipitation tank second-level settling pond and three grades of visual sewage loads of settling tank are provided with several to the process of sewage to be conducive to the recycle of sewage.Industrial production sewage and sanitary sewage import first stage precipitation tank, and in sewage, each index is pH value 10.05, SS is after testing 147.95 mg/litre, and COD is 163.69 mg/litre, BOD
5be 29.07 mg/litre, NH
3-N is 5.46 mg/litre, total mercury is 0.0043 mg/litre, carry out the particulate matter that one-level precipitation process suspends except major part in decontaminated water, and be provided with pH detect meter detect pH value of sewage water at any time, oettIed sewage is promoted pressurization through pump filter through differential pressure type, after the impurity that decontaminated water includes, by the detection to filter sewage, if filter and reach requirement, be delivered to second-level settling pond and carry out two-stage precipitation process with the granule foreign included except decontaminated water further, as do not reached requirement, then filtration can be re-started; And by monitoring to the pH value of sewage, the mixing tank that adjustment is arranged on pump discharge place adds HCl to carry out being adjusted to pH value 7-8;
In second-level settling pond process, clorox is added to sewage, by its Strong oxdiative performance, the various organic substances being difficult to by common empty oxidation removing of exposing to the sun containing cyanogen, phosphorous, sulfur-bearing and nitrogenous substances, various high chroma organism etc. in effective decomposition sewage, the rock steady structure of rapid destruction organic molecule, make it to change into completely harmless inorganics or harmless easy-to-handle organic substance, and sky precipitation process of exposing to the sun is to eliminate organism in sewage, and passes through COD, BOD in sewage
5, NH
3the detection of-N and total mercury, the add-on of adjustment clorox is to meet processing requirements, then the filtration unit by being equipped with saw flower and gac carries out filtrating overflow, detect filter effect, if filter and reach requirement, entering three grades of settling tanks and carry out three grades of precipitation process, as do not reached requirement, then can re-start filtration;
After sewage carries out precipitation process in three grades of settling tanks, each index of sewage is pH value 7.83, SS is 72.37 mg/litre, and COD is 109.08 mg/litre, BOD
5be 21.14 mg/litre, NH
3-N is 4.98 mg/litre, and total mercury is 0.0034 mg/litre, meets the needs of industrial acetylene water completely, promotes storage in the industrial production of acetylene by lift pump.And further can be processed by the laggard row of monitoring, for ecological water such as cultivation and irrigating plants, the ecological pool be provided with specially also can be stored in for subsequent use.
Claims (3)
1. for a sewage water treatment method for acetylene, it is characterized in that comprising the following steps: 1) sewage is come together in first stage precipitation tank and carry out one-level precipitation process, adjustment pH value of sewage water 7-8; And carry out two-stage precipitation process by being delivered to second-level settling pond through differential pressure type filtration after the sewage lifting pressurization after one-level precipitation process; 2) to two-stage precipitation sewage add clorox and vacancy reason of exposing to the sun to eliminate organism in sewage, then sewage enters three grades of settling tanks through cascade filtration overflow and carries out three grades of precipitation process; 3) sewage reaches the index request of industrial acetylene through three grades of precipitation process.
2. a kind of sewage water treatment method for acetylene as claimed in claim 1, is characterized in that: cascade filtration adopts the filtration unit that saw flower and gac are housed.
3. a kind of sewage water treatment method for acetylene as claimed in claim 1, is characterized in that: the pH value adjustment of sewage adopts differential pressure type after sewage lifting to add HCl or NaOH before filtering and adjusts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410207817.6A CN105084581A (en) | 2014-05-17 | 2014-05-17 | Sewage treatment method for acetylene production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410207817.6A CN105084581A (en) | 2014-05-17 | 2014-05-17 | Sewage treatment method for acetylene production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105084581A true CN105084581A (en) | 2015-11-25 |
Family
ID=54566032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410207817.6A Pending CN105084581A (en) | 2014-05-17 | 2014-05-17 | Sewage treatment method for acetylene production |
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| CN (1) | CN105084581A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314754A (en) * | 2014-06-21 | 2016-02-10 | 高嵩 | Sewage treatment method being suitable for acetylene production |
| CN107601723A (en) * | 2017-10-31 | 2018-01-19 | 天津科艾福特科技有限公司 | A kind of wastewater treatment equipment |
| CN111762912A (en) * | 2020-06-09 | 2020-10-13 | 天津渤化环境修复股份有限公司 | Pretreatment method for underground water of pesticide plant |
-
2014
- 2014-05-17 CN CN201410207817.6A patent/CN105084581A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314754A (en) * | 2014-06-21 | 2016-02-10 | 高嵩 | Sewage treatment method being suitable for acetylene production |
| CN107601723A (en) * | 2017-10-31 | 2018-01-19 | 天津科艾福特科技有限公司 | A kind of wastewater treatment equipment |
| CN111762912A (en) * | 2020-06-09 | 2020-10-13 | 天津渤化环境修复股份有限公司 | Pretreatment method for underground water of pesticide plant |
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Application publication date: 20151125 |