CN103663883A - Hexogen production wastewater treatment system and method - Google Patents
Hexogen production wastewater treatment system and method Download PDFInfo
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- CN103663883A CN103663883A CN201310741831.XA CN201310741831A CN103663883A CN 103663883 A CN103663883 A CN 103663883A CN 201310741831 A CN201310741831 A CN 201310741831A CN 103663883 A CN103663883 A CN 103663883A
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Abstract
The invention relates to a hexogen production wastewater treatment system and a hexogen production wastewater treatment method, and belongs to the field of wastewater treatment. The hexogen production wastewater treatment system comprises a pH regulating pool, an anaerobic pond, an anaerobic reactor, a contact oxidation pond, a settling pond, a biological activated carbon pond and a sand filter pond. The system and the method have the advantages that organic matters and nitrate nitrogen in waste water can be fully utilized for increasing the wastewater pH, and the addition quantity of alkali during the neutralization is greatly reduced. Most organic pollutants can be removed through the anaerobic reactor, and in addition, partial pollutants difficult to biochemically degrade are converted into matters capable of being easily utilized by microorganisms. The wastewater is subjected to two-stage aerobic treatment, a biological activated carbon process is utilized for carrying out deep treatment on outlet water of the contact oxidation pond, and the stable standard reaching of the outlet water quality is ensured.
Description
Technical field
The system and method that the present invention relates to a kind of hexogen production wastewater treatment, belongs to field of waste water treatment.
Background technology
Cyclotrimethylene trinitramine (RDX) formal name used at school is 1,3,4-trinitro--1, and 3,5-Trianacyclohexane, also claims onit, is the extremely strong powerful explosive of a kind of explosive power.Conventional Cyclotrimethylene trinitramine production technique has direct nitre solution and acetic anhydride method.In the waste water that acetic anhydride method production Cyclotrimethylene trinitramine produces, contain the pollutents such as aceticanhydride, acetic acid, urotropine, ammonium nitrate and Cyclotrimethylene trinitramine, wherein part pollutent has restraining effect to microorganism, and biodegradability is poor.
At present, for the processing of Cyclotrimethylene trinitramine factory effluent, the technology of existing practical engineering application is mainly active carbon adsorption.This method adopts charcoal absorption to remove the pollutent in waste water.The pollutent in waste water can be effectively removed in charcoal absorption, and water outlet indices all can reach emission standard requirement.But the saturated rear difficult regeneration of charcoal absorption, needs frequently more to renew charcoal, one-time investment and running cost are all very high.And, adsorbing gac after saturated owing to containing the materials such as Cyclotrimethylene trinitramine, can not process as Ordinary solid waste, further increased processing cost.
Summary of the invention
The object of the present invention is to provide a kind of technique and device thereof of efficient processing Cyclotrimethylene trinitramine factory effluent, reach emission standard after making to process rear water outlet, and reduce one-time investment and the processing cost of device.
The object of the invention is to be achieved through the following technical solutions:
The treatment system of a kind of Cyclotrimethylene trinitramine factory effluent of the present invention, comprising: pH regulator pond, anoxic pond, anaerobic reactor, contact-oxidation pool, settling tank, biological activated carbon pond and sand filter.
PH regulator pond inwall adopts Corrosion Protection of Fiber Reinforced Plastics, and pH real-time monitoring device, whipping appts and alkali throwing device are set in pond.Wherein pH real-time monitoring device is controlled the dosage of alkali throwing device automatically according to predetermined pH scope, and the pH of pending waste water is adjusted to pre-determined range.
Anoxic pond inside arranges anoxic filler, electrochemical apparatus and redox potential real-time monitoring device; Anoxic filler is denitrifying bacteria and/or double oxygen bacterium; Electrochemical apparatus Anodic adopts oxygen evolution potential type titanium base stannic oxide electrode (Ti/SnO
2), negative electrode adopts stainless steel plate, fills the iron filings of 1:1 mixing by volume and the ceramic particle that area load has Ag between two pole plates; The working hour of the redox potential scope automatic control electric chemical device that redox potential real-time monitoring device is predetermined;
The water-in of anoxic pond arranges large resistance water distribution system, and multiple spot water distribution guarantees that water distribution is even.The water outlet of anoxic pond arranges sawtooth weir, evenly collects, and prevents short stream.
Anaerobic reactor is closed cell body, and outer setting thermal insulation layer is established heating coil and temperature real time monitoring apparatus in pond, and heating unit carries out temperature adjusting to anaerobic pond waste water automatically according to the feedback signal of temperature real time monitoring apparatus; Chi Ding establishes biogas blow-down pipe.
Contact-oxidation pool inside arranges aerobic filler and aerating apparatus, and wherein aerating apparatus adopts type micro-pore aerator.
The water-in of settling tank is arranged on Chi Ti bottom centre, and water outlet arranges the side of pond body, and the bottom of settling tank is also provided with spoil disposal passage and sludge reflux passage, and mud scraper is set in pond; Settling tank is radical sedimentation basin, and in pond, mud scraper adopts peripheral drive sludge scraper.
Biological activated carbon pond is enterprising water outlet form under water.The filler and the aerating apparatus that in pond, adopt the columnar activated carbon processing of particle diameter 2-5mm, aerating apparatus adopts single-hole membrane aerator.
Sand filter is double-layer filter material, and upper strata is thick 0.4-0.5m, the hard coal of particle diameter 0.8-1.8mm; Lower floor is thick 0.4-0.5m, the quartz sand of particle diameter 0.5-1.2mm; Water-in is arranged on the upper end of sand filter double-layer filter material, and water outlet is arranged on the lower end of sand filter double-layer filter material.
PH regulator pond, anoxic pond, anaerobic reactor, contact-oxidation pool, settling tank, biological activated carbon pond are connected by pipeline successively with sand filter, and the sludge reflux passage that the spoil disposal passage of settling tank connects sludge treatment device settling tank by sludge pump pipeline is connected with the water-in of contact-oxidation pool by reflux pump.
The treatment process of a kind of Cyclotrimethylene trinitramine factory effluent of the present invention, concrete treatment step is as follows:
1) Cyclotrimethylene trinitramine factory effluent being entered to pH regulator pond, is 4～5 by setting the pH regulator scope of the pH real-time monitoring device in pond, controls alkali throwing device and adds alkali lye, and wastewater pH is adjusted to 4～5, when adding alkali lye, stirs;
2) by through the 1st) step pH value regulates the waste water after processing to squeeze into anoxic pond through pump, in anoxic pond, carry out hypoxia response and electrochemical reaction, and by redox potential real-time monitoring device, control redox potential in anoxic pond and maintain-below 300mV, the reaction times is more than 3h; Water outlet pH can rise to 6.0～6.5, COD and be down to 4200～4600mg/L.
3) by through the 2nd) waste water after step anoxic pond is processed promotes and enters in anaerobic reactor through pump, in temperature, be under the condition of 30～35 ℃ more than anaerobic treatment 10h, can remove majority of organic pollutants, water outlet COD can be down to 600～800mg/L, Cyclotrimethylene trinitramine clearance is also not obvious, and concentration maintains 28～52mg/L.
4) by through the 3rd) waste water gravity flow after step anaerobic treatment enters contact-oxidation pool, and more than aerobic treatment 8h.Water outlet after precipitation COD can be down to 80～130mg/L, and Cyclotrimethylene trinitramine can be down to 16～33mg/L, can not stably reaching standard.
5) through the 4th) more than waste water after step anaerobic treatment enters settling tank precipitation 1h, will precipitate lower floor's sludge reflux to contact-oxidation pool; Excess sludge concentrates after discharging successively, processed;
6) through the 5th) the settling tank supernatant liquor of step precipitation process enters aeration and sedimentation in biological activated carbon pond, and more than precipitation 3h, gas-water ratio is 10:1.
7) waste water after step 6) aeration and sedimentation is processed filters by sand filter, can qualified discharge after removal suspended substance wherein.
To contact-oxidation pool, make the sludge concentration in contact-oxidation pool maintain 3000mg/L～4500mg/L the part sludge reflux in settling tank, can improve water treatment effect, reduce the difficulty of follow-up concentrated, processed.
Beneficial effect
The present invention makes full use of organism and the nitric nitrogen lifting waste water pH in waste water, in greatly reducing and time alkali dosage.By anaerobic reactor, can remove majority of organic pollutants, and the pollutent of part bio-refractory is converted into the material that is easy to be utilized by microorganism.Waste water is carried out to two-stage aerobic processing, utilize BAC process to carry out advanced treatment to contact-oxidation pool water outlet, guarantee that stable effluent quality is up to standard.
The present invention has given full play to the low advantage of biochemical process cost, when guaranteeing treatment effect, effectively reduces working cost.Adopt device and method of the present invention to process the indices after Cyclotrimethylene trinitramine factory effluent, COD(chemical oxygen demand (COD)) can be down to below 50mg/L, Cyclotrimethylene trinitramine is less than 0.5mg/L, meet the requirement of < < weapon industry pollution discharge standard fire explosive > > (GB14470.1-2002), wherein COD index can reach the first discharge standard of < < integrated wastewater discharge standard > > (GB8978-1996).
Research and development of the present invention and application, reduced the processing cost of Cyclotrimethylene trinitramine factory effluent effectively, can effectively promote the Sustainable development of China fire explosive enterprise, not only has good environmental benefit, and have outstanding economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the treating processes schematic diagram of hexogen production wastewater treatment system of the present invention;
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is described further:
Embodiment
The Cyclotrimethylene trinitramine factory effluent that Yi Mou factory discharges is for processing object, and its parameters is: COD=6000 ± 700mg/L, Cyclotrimethylene trinitramine=30～60mg/L, BOD
5=2800～3200mg/L, pH=2.2～3.1.
Adopt apparatus of the present invention and method to carry out Combined Processing to above-mentioned Cyclotrimethylene trinitramine factory effluent, concrete treatment step is as follows:
The treatment process of a kind of Cyclotrimethylene trinitramine factory effluent of the present invention, concrete treatment step is as follows:
1) Cyclotrimethylene trinitramine factory effluent being entered to pH regulator pond, is 4～5 by setting the pH regulator scope of the pH real-time monitoring device in pond, controls alkali throwing device and adds alkali lye, and wastewater pH is adjusted to 4～5, when adding alkali lye, stirs;
2) by through the 1st) step pH value regulates the waste water after processing to squeeze into anoxic pond through pump, in anoxic pond, carry out hypoxia response and electrochemical reaction, and by redox potential real-time monitoring device, control redox potential in anoxic pond and maintain-below 300mV, the reaction times is 3h; Water outlet pH can rise to 6.0～6.5, COD and be down to 4200～4600mg/L.
3) by through the 2nd) waste water after step anoxic pond is processed promotes and enters in anaerobic reactor through pump, in temperature, be anaerobic treatment 10h under the condition of 35 ℃, can remove majority of organic pollutants, water outlet COD can be down to 600～800mg/L, Cyclotrimethylene trinitramine clearance is also not obvious, and concentration maintains 28～52mg/L.
4) by through the 3rd) waste water gravity flow after step anaerobic treatment enters contact-oxidation pool, aerobic treatment 8h.Water outlet after precipitation COD can be down to 80～130mg/L, and Cyclotrimethylene trinitramine can be down to 16～33mg/L, can not stably reaching standard.
5) through the 4th) waste water after step anaerobic treatment enters settling tank precipitation 1h, after being discharged, settling tank mud concentrates successively, processed;
6) through the 5th) the settling tank supernatant liquor of step precipitation process enters aeration and sedimentation in biological activated carbon pond, precipitation 3h, gas-water ratio is 10:1.
7) waste water after step 6) aeration and sedimentation is processed filters by sand filter, can qualified discharge after removal suspended substance wherein.
Claims (8)
1. a treatment unit for Cyclotrimethylene trinitramine factory effluent, is characterized in that: comprise pH regulator pond, anoxic pond, anaerobic reactor, contact-oxidation pool, settling tank, biological activated carbon pond and sand filter;
PH real-time monitoring device, whipping appts and alkali throwing device are set in pH regulator pond; Wherein pH real-time monitoring device is controlled the dosage of alkali throwing device automatically according to predetermined pH scope, and the pH of pending waste water is adjusted to pre-determined range;
Anoxic pond inside arranges anoxic filler, electrochemical apparatus and redox potential real-time monitoring device; Anoxic filler is denitrifying bacteria and/or double oxygen bacterium; Electrochemical apparatus Anodic adopts oxygen evolution potential type titanium base stannic oxide electrode (Ti/SnO
2), negative electrode adopts stainless steel plate, fills the iron filings of 1:1 mixing by volume and the ceramic particle that area load has Ag between two pole plates; The working hour of the redox potential scope automatic control electric chemical device that redox potential real-time monitoring device is predetermined;
Anaerobic reactor is closed cell body, and outer setting thermal insulation layer is established heating coil and temperature real time monitoring apparatus in pond, and heating unit carries out temperature adjusting to anaerobic pond waste water automatically according to the feedback signal of temperature real time monitoring apparatus; Chi Ding establishes biogas blow-down pipe;
Contact-oxidation pool inside arranges aerobic filler and aerating apparatus;
The water-in of settling tank is arranged on Chi Ti bottom centre, and water outlet arranges the side of pond body, and the bottom of settling tank is also provided with spoil disposal passage and sludge reflux passage, and mud scraper is set in pond;
Biological activated carbon pond is enterprising water outlet form under water; In pond, adopt filler and the aerating apparatus of the columnar activated carbon processing of particle diameter 2-5mm;
Sand filter is double-layer filter material, and upper strata is thick 0.4-0.5m, the hard coal of particle diameter 0.8-1.8mm; Lower floor is thick 0.4-0.5m, the quartz sand of particle diameter 0.5-1.2mm; Water-in is arranged on the upper end of sand filter double-layer filter material, and water outlet is arranged on the lower end of sand filter double-layer filter material;
PH regulator pond, anoxic pond, anaerobic reactor, contact-oxidation pool, settling tank, biological activated carbon pond are connected by pipeline successively with sand filter, and the sludge reflux passage that the spoil disposal passage of settling tank connects sludge treatment device settling tank by sludge pump pipeline is connected with the water-in of contact-oxidation pool by reflux pump.
2. the treatment unit of a kind of Cyclotrimethylene trinitramine factory effluent as claimed in claim 1, is characterized in that: pH regulator pond inwall adopts Corrosion Protection of Fiber Reinforced Plastics.
3. the treatment unit of a kind of Cyclotrimethylene trinitramine factory effluent as claimed in claim 1, is characterized in that: the water-in of anoxic pond arranges large resistance water distribution system; The water outlet of anoxic pond arranges sawtooth weir.
4. the treatment unit of a kind of Cyclotrimethylene trinitramine factory effluent as claimed in claim 1, is characterized in that: settling tank is radical sedimentation basin, and in pond, mud scraper adopts peripheral drive sludge scraper.
5. the treatment unit of a kind of Cyclotrimethylene trinitramine factory effluent as claimed in claim 1, is characterized in that: wherein the aerating apparatus in contact-oxidation pool adopts type micro-pore aerator.
6. the treatment unit of a kind of Cyclotrimethylene trinitramine factory effluent as claimed in claim 1, is characterized in that: the aerating apparatus in biological activated carbon pond adopts single-hole membrane aerator.
7. application, as a method for claim 1 processing Cyclotrimethylene trinitramine factory effluent, is characterized in that: concrete treatment step is as follows:
1) Cyclotrimethylene trinitramine factory effluent being entered to pH regulator pond, is 4～5 by setting the pH regulator scope of the pH real-time monitoring device in pond, controls alkali throwing device and adds alkali lye, and wastewater pH is adjusted to 4～5, when adding alkali lye, stirs;
2) by through the 1st) step pH value regulates the waste water after processing to squeeze into anoxic pond through pump, in anoxic pond, carry out hypoxia response and electrochemical reaction, and by redox potential real-time monitoring device, control redox potential in anoxic pond and maintain-below 300mV, the reaction times is more than 3h;
3) by through the 2nd) waste water after step anoxic pond is processed promotes and enters in anaerobic reactor through pump, is under the condition of 30～35 ℃ more than anaerobic treatment 10h in temperature;
4) by through the 3rd) waste water gravity flow after step anaerobic treatment enters contact-oxidation pool, more than aerobic treatment 8h;
5) through the 4th) more than waste water after step anaerobic treatment enters settling tank precipitation 1h, will precipitate lower floor's sludge reflux to contact-oxidation pool; Excess sludge concentrates after discharging successively, processed;
6) through the 5th) the settling tank supernatant liquor of step precipitation process enters aeration and sedimentation in biological activated carbon pond, and more than precipitation 3h, gas-water ratio is 10:1;
7) waste water after step 6) aeration and sedimentation is processed filters by sand filter, can qualified discharge after removal suspended substance wherein.
8. a kind of method of processing Cyclotrimethylene trinitramine factory effluent as claimed in claim 1, is characterized in that: to contact-oxidation pool, make the sludge concentration in contact-oxidation pool maintain 3000mg/L～4500mg/L the part sludge reflux in settling tank.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193089A (en) * | 2014-08-06 | 2014-12-10 | 东莞理工学院 | Integrated river and lake water purification equipment |
| CN104230106A (en) * | 2014-09-15 | 2014-12-24 | 青海泽源环保科技有限公司 | Ultra-micro powder sewage treatment device and sewage treatment method of sewage treatment device |
| CN104743752A (en) * | 2015-04-17 | 2015-07-01 | 湛江紫荆羽绒制品有限公司 | Sewage treatment system and sewage treatment method thereof |
| CN105439330A (en) * | 2016-01-15 | 2016-03-30 | 芜湖林诺环保科技有限公司 | Small sewage treatment device and control method thereof |
| CN106145539A (en) * | 2016-08-16 | 2016-11-23 | 北京北方节能环保有限公司 | A kind of system and method for hexogen production wastewater treatment |
| CN109761381A (en) * | 2018-12-25 | 2019-05-17 | 西安近代化学研究所 | A kind of continuous separation technology of explosive loading and aqueous mixtures |
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| CN201296705Y (en) * | 2008-10-07 | 2009-08-26 | 浙江大学 | Electrochemical autotrophy and denitrification integration reactor for removing the nitrate nitrogen in water |
| CN103332824A (en) * | 2012-12-27 | 2013-10-02 | 北京北方节能环保有限公司 | A composite treatment system and a treatment method for DNT production waste water |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193089A (en) * | 2014-08-06 | 2014-12-10 | 东莞理工学院 | Integrated river and lake water purification equipment |
| CN104193089B (en) * | 2014-08-06 | 2016-06-22 | 东莞理工学院 | A kind of river integrated equipment of lake water disinfection |
| CN104230106A (en) * | 2014-09-15 | 2014-12-24 | 青海泽源环保科技有限公司 | Ultra-micro powder sewage treatment device and sewage treatment method of sewage treatment device |
| CN104743752A (en) * | 2015-04-17 | 2015-07-01 | 湛江紫荆羽绒制品有限公司 | Sewage treatment system and sewage treatment method thereof |
| CN104743752B (en) * | 2015-04-17 | 2016-08-24 | 湛江紫荆羽绒制品有限公司 | A kind of sewage disposal system and sewage water treatment method thereof |
| CN105439330A (en) * | 2016-01-15 | 2016-03-30 | 芜湖林诺环保科技有限公司 | Small sewage treatment device and control method thereof |
| CN106145539A (en) * | 2016-08-16 | 2016-11-23 | 北京北方节能环保有限公司 | A kind of system and method for hexogen production wastewater treatment |
| CN109761381A (en) * | 2018-12-25 | 2019-05-17 | 西安近代化学研究所 | A kind of continuous separation technology of explosive loading and aqueous mixtures |
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Application publication date: 20140326 |