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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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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310568639.5A CN103739149A (en) | 2013-11-15 | 2013-11-15 | Laboratory wastewater treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310568639.5A CN103739149A (en) | 2013-11-15 | 2013-11-15 | Laboratory wastewater treatment technology |
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| CN103739149A true CN103739149A (en) | 2014-04-23 |
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| CN201310568639.5A Pending 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)
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| CN101851036A (en) * | 2009-04-03 | 2010-10-06 | 复旦大学 | Method for treating biological laboratory wastewater |
| 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 |
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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 | Method for treating biological laboratory wastewater |
| 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 |