CN103739149A - Laboratory wastewater treatment technology - Google Patents
Laboratory wastewater treatment technology Download PDFInfo
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- CN103739149A CN103739149A CN201310568639.5A CN201310568639A CN103739149A CN 103739149 A CN103739149 A CN 103739149A CN 201310568639 A CN201310568639 A CN 201310568639A CN 103739149 A CN103739149 A CN 103739149A
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- sludge
- tank
- waste water
- enters
- equalizing tank
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 10
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- 239000010865 sewage Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 9
- 238000001556 precipitation Methods 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000000706 filtrate Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- 230000001112 coagulating effect Effects 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 claims description 2
- 230000016615 flocculation Effects 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 150000002500 ions Chemical class 0.000 abstract description 3
- 241000233866 Fungi Species 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 230000015271 coagulation Effects 0.000 abstract 2
- 238000005345 coagulation Methods 0.000 abstract 2
- 239000012716 precipitator Substances 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 101000878595 Arabidopsis thaliana Squalene synthase 1 Proteins 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a laboratory wastewater treatment technology. The technology comprises the following steps: 1, sewage treatment: wastewater enters an artificial grating for filtering out impurities, the impurity removed laboratory wastewater enters an equalizing tank, sewage is lifted by a lift pump and then enters a neutralization precipitator, an acid or an alkali is added to adjust the pH value, a flocculating agent is added to carry out coagulation precipitation in order to remove heavy metal ions, water obtained after the coagulation precipitation enters an SBR tank, water discharged from the SBR tank is discharged from a water discharging tank in a standard reaching manner, and the above obtained filtrate flows back to the equalizing tank; and 2, sludge treatment: sludge in the neutralization precipitator and sludge in the SBR tank are discharged to a sludge drying tank and is naturally dried, and the obtained dried sludge is transported outward. The technology has the advantages of simplicity, no sludge backflow apparatus, flexible running operation, removal of the nitrogen and phosphorus by properly adjusting the operation states of all stages, good settlement performance and low SVI value of activated sludge under different running environment conditions in a running period, effective prevention of the expansion of thread fungi, easy automatic control and easy maintenance and management.
Description
Technical field
The present invention relates to field of waste water treatment, specifically a kind of Laboratory Waste Water Treatment technique.
Background technology
Laboratory sewage is mainly from scientific research and the school duty room of each experimental study Shi He institution of higher learning of R&D institution.Laboratory waste water has the special property of himself, and amount is few, and discontinuity is strong, high harm, and complicated component is changeable.It is less that present institution of higher education has formed the omnibearing structure of education laboratory waste water total emission volumns such as work, agriculture, reason, doctor, medicine, temporal evolution is larger, and pollutent complicated, mainly comprises all kinds of discarded soda acids and toxic organics, heavy metal, prussiate, pathogenic micro-organism etc.Different waste water, pollutent forms different, and treatment process and degree are not identical yet.The processing of laboratory sewage is in line with categorised collection, on the spot, in-situ treatment, ease of Use, the treatment of wastes with processes of wastes against one another and the principle reducing costs in time.
Along with expanding economy and scientific and technological progress, the scientific experiment that each metropolitan R&D institution and institution of higher learning carry out is now more and more deep, extensive, and the laboratory waste water of discharging from laboratory increases relatively, and the water quality of waste water is quite complicated.The discharge cycle of this type of waste water is indefinite, and the discharge water yield is irregularities also, and contained pollutant component is comparatively complicated, except containing the organism such as washing composition and common solvent, also has more soda acid, poisonous and hazardous organism, heavy metal, and many newborn substances, character is difficult to determine.The laboratory waste water water yield is relatively little, if but do not add to process and will cause great pollution to environment with regard to outer row.Yet through investigation, find that many scientific experiments chamber is only simple processing to the waste water producing, even do not do just discharge of any processing.In order further to strengthen the management to laboratory, the technique that the method for research laboratory's wastewater comprehensive treatment and treatment effect are good, advanced technology, investment are less and install imperative.
Summary of the invention
The object of the present invention is to provide a kind of Laboratory Waste Water Treatment technique.
Object of the present invention can be achieved through the following technical solutions:
A Laboratory Waste Water Treatment technique, is characterized in that, comprises sewage disposal and sludge treatment, wherein:
(1) sewage disposal: laboratory waste water enters artificial grid and filters out impurities, after enter equalizing tank, in equalizing tank, establish submersible stirring pump, by stirring action, laboratory waste water homogeneous is all measured, then by lift pump lifting sewage, entered neutralization precipitation device, acid adding or alkali regulate pH value, add again flocculation agent coagulating sedimentation heavy-metal ion removal, water outlet after coagulating sedimentation enters SBR pond, and the water outlet of SBR pond is by blowoff basin qualified discharge, and filtrate is back to equalizing tank;
(2) sludge treatment: in neutralization precipitation device, mud and SBR pond mud drain into sludge drying pond, transport outward after natural mummification.
Described acid is that mass concentration is 10% dilute sulphuric acid, and described alkali is that mass concentration is 30% aqua calcis, regulates pH to neutral.
Beneficial effect of the present invention: technique of the present invention is simple, without sludge reflux equipment; Operation is flexible, can reach the effect of denitrogenation dephosphorizing by each stages operating state of suitable adjusting; Active sludge is within a cycle of operation, and through different running environment conditions, sludge settling property is good, and SVI value is lower, can effectively prevent thread fungus expansion; This technique is easy to automatic control, is easy to maintenance management.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
The waste water quality index that discharge in certain laboratory: pH: peracid, high-alkali, CODcr≤400 mg/l, BOD≤250 mg/l, SS≤150mg/l
Effluent quality after the present invention processes: pH:6.0-9.0, CODcr≤100 mg/l, BOD≤20mg/l, SS≤70mg/l
As shown in Figure 1, a kind of Laboratory Waste Water Treatment technique, comprises sewage disposal and sludge treatment, wherein:
Sewage part: first laboratory waste water enters artificial grid and filter out impurities, then enter equalizing tank, in equalizing tank, establish diving mixer, by stirring action, sewage homogeneous is all measured; Then through lift pump lifting sewage, enter neutralization precipitation device, by acid adding or add alkali and regulate pH value, the dilute sulphuric acid that acid is 10% for mass concentration, described alkali is that mass concentration is 30% aqua calcis, regulates pH to neutrality.And add PAC coagulating sedimentation heavy-metal ion removal, wherein the concentration of PAC is 1-3%.Water outlet enters SBR pond, and after processing, by blowoff basin qualified discharge, mummifying pool filtrate is back to equalizing tank.
Sludge part: neutralization precipitation device mud and SBR pond mud drain into sludge drying pond, transport outward after natural mummification.
Table 1 is each section of effluent quality index of the present invention (unit is all with mg/L)
Sequence number | Operation | COD | BOD | SS |
1 | Laboratory waste water | 400 | 250 | 150 |
2 | Grille well | 400 | 250 | 130 |
3 | Equalizing tank | 390 | 240 | 130 |
4 | Neutralization precipitation pond | 320 | 200 | — |
5 | SBR pond | 70 | 15 | 35 |
Above content is only to technique example of the present invention and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the technique of invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (2)
1. a Laboratory Waste Water Treatment technique, is characterized in that, comprises sewage disposal and sludge treatment, wherein:
(1) sewage disposal: laboratory waste water enters artificial grid and filters out impurities, after enter equalizing tank, in equalizing tank, establish submersible stirring pump, by stirring action, laboratory waste water homogeneous is all measured, then by lift pump lifting sewage, entered neutralization precipitation device, acid adding or alkali regulate pH value, add again flocculation agent coagulating sedimentation heavy-metal ion removal, water outlet after coagulating sedimentation enters SBR pond, and the water outlet of SBR pond is by blowoff basin qualified discharge, and filtrate is back to equalizing tank;
(2) sludge treatment: in neutralization precipitation device, mud and SBR pond mud drain into sludge drying pond, transport outward after natural mummification.
2. Laboratory Waste Water Treatment technique according to claim 1, is characterized in that, described acid is that mass concentration is 10% dilute sulphuric acid, and described alkali is that mass concentration is 30% aqua calcis, regulates pH to neutral.
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CN201310568639.5A CN103739149A (en) | 2013-11-15 | 2013-11-15 | Laboratory wastewater treatment technology |
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CN201310568639.5A CN103739149A (en) | 2013-11-15 | 2013-11-15 | Laboratory wastewater treatment technology |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107055956A (en) * | 2017-04-12 | 2017-08-18 | 廊坊兴安木业有限公司 | A kind of Laboratory Waste Water Treatment system |
CN108178275A (en) * | 2018-01-09 | 2018-06-19 | 李志浩 | A kind of use for laboratory wastewater treatment equipment |
CN108328817A (en) * | 2018-02-01 | 2018-07-27 | 江苏库利南实验设备有限公司 | A kind of laboratory sewage disposal device of centralized processing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101851036A (en) * | 2009-04-03 | 2010-10-06 | 复旦大学 | A kind of treatment method of biological laboratory waste water |
CN203007063U (en) * | 2012-12-05 | 2013-06-19 | 西南科技大学 | Comprehensive wastewater treatment device of inorganic laboratory |
JP2013132618A (en) * | 2011-12-27 | 2013-07-08 | Nippon Steel & Sumikin Eco-Tech Corp | Method for biological treatment of organic waste water |
CN103304078A (en) * | 2013-07-09 | 2013-09-18 | 南开大学 | Laboratory wastewater treatment process equipment and wastewater treatment method using same |
-
2013
- 2013-11-15 CN CN201310568639.5A patent/CN103739149A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101851036A (en) * | 2009-04-03 | 2010-10-06 | 复旦大学 | A kind of treatment method of biological laboratory waste water |
JP2013132618A (en) * | 2011-12-27 | 2013-07-08 | Nippon Steel & Sumikin Eco-Tech Corp | Method for biological treatment of organic waste water |
CN203007063U (en) * | 2012-12-05 | 2013-06-19 | 西南科技大学 | Comprehensive wastewater treatment device of inorganic laboratory |
CN103304078A (en) * | 2013-07-09 | 2013-09-18 | 南开大学 | Laboratory wastewater treatment process equipment and wastewater treatment method using same |
Non-Patent Citations (2)
Title |
---|
何传伟等: "高校环境类实验室废液概况及处理工艺设计", 《宁夏农林科技》, vol. 52, no. 9, 30 September 2011 (2011-09-30) * |
孔昊楠: "混凝法处理实验室废水的研究", 《环境卫生工程》, vol. 13, no. 6, 31 December 2007 (2007-12-31) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107055956A (en) * | 2017-04-12 | 2017-08-18 | 廊坊兴安木业有限公司 | A kind of Laboratory Waste Water Treatment system |
CN108178275A (en) * | 2018-01-09 | 2018-06-19 | 李志浩 | A kind of use for laboratory wastewater treatment equipment |
CN108328817A (en) * | 2018-02-01 | 2018-07-27 | 江苏库利南实验设备有限公司 | A kind of laboratory sewage disposal device of centralized processing |
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Application publication date: 20140423 |