CN202449962U - System for treating high-salinity wastewater from chemical industry - Google Patents

System for treating high-salinity wastewater from chemical industry Download PDF

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Publication number
CN202449962U
CN202449962U CN2012200141612U CN201220014161U CN202449962U CN 202449962 U CN202449962 U CN 202449962U CN 2012200141612 U CN2012200141612 U CN 2012200141612U CN 201220014161 U CN201220014161 U CN 201220014161U CN 202449962 U CN202449962 U CN 202449962U
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China
Prior art keywords
tank
pump
mbr
pond
reactor
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Expired - Fee Related
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CN2012200141612U
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Chinese (zh)
Inventor
周益
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SHANGHAI MINXIN ENVIRONMENT PROTECTION EQUIPMENT ENGINEERING Co Ltd
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SHANGHAI MINXIN ENVIRONMENT PROTECTION EQUIPMENT ENGINEERING Co Ltd
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Publication of CN202449962U publication Critical patent/CN202449962U/en
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Abstract

The utility model provides a system for treating high-salinity wastewater from chemical industry. According to the system, a water collecting tank for collecting high-salinity wastewater is connected with a membrane evaporation reactor through a corrosion-resisting pump and a pipeline; the lower pipeline of the membrane evaporation reactor is connected with a crystallization kettle; the upper part of the crystallization kettle is connected with the water collecting tank through a filtering layer, and the lower pipeline of the crystallization kettle is connected with a waste salt outlet; the upper part of the membrane evaporation reactor is connected with a regulating tank through a steam pipeline and then is connected with a first pump, an iron-carbon tank, a Fenton reaction tank, a sedimentation tank, a biochemical regulating tank, a second pump, an anaerobic reactor, an anoxic tank and a membrane bio-reactor (MBR) tank through pipelines in sequence; the middle part of the MBR tank is connected with a standard emission water outlet through a fourth pump, and the lower part of the MBR tank is connected with the anaerobic reactor and the anoxic tank through a third pump pipeline; the bottoms of the sedimentation tank and the MBR tank are connected with a sludge concentration tank through a sludge pipe and then are connected with a screw pump connection plate frame pressure filter; and the upper part of the sludge concentration tank is connected with the regulating tank through a water pipe.

Description

A kind of high saliferous chemical wastewater treatment system
Technical field
The utility model relates to a kind of Sewage treatment systems, particularly a kind of high saliferous chemical wastewater treatment system.
Background technology
Urban sewage discharge has been the primary pollution source of China's Urban Water Environment at present, and municipal sewage treatment is the most important thing of urban water conservation at present and in the future and Urban Water Environment protection work.Municipal effluent comprises sewage and industrial sewage, and wherein the industrial sewage kind is a lot, to different sources, needs different processing.
Wherein, high saliferous wastewater from chemical industry, many, the complicated component of product category contains high-concentration chlorine ion, contains the heterocyclic hard-degraded substance in the waste water, and the wastewater biochemical degradation property is poor, and COD concentration is high, reaches as high as 30000mg/L, and directly intractability is big.
Summary of the invention
The purpose of the utility model provides a kind of high saliferous wastewater from chemical industry system, and it is poor to solve high saliferous chemical wastewater biochemical degradation property, and equipment itself is complicated, the problem that floor space is big.
The technical scheme of the utility model: a kind of high saliferous chemical wastewater treatment system; The water collecting basin that compiles high slat-containing wastewater; Warp one noncorrosive pump is with pipe connection thin film evaporation reactor drum; The lower pipeline of thin film evaporation reactor drum connects crystallization kettle, the top of the crystallization kettle water collecting basin that is linked back after via filtering layer, and the lower pipeline of crystallization kettle connects the abraum salt relief outlet.
After said thin film evaporation reactor drum top connects equalizing tank through steam-pipe; With pipe connection first pump, iron charcoal pond, Fenton's reaction pond, settling tank, biochemical equalizing tank, second pump, anaerobic reactor, anoxic pond and MBR pond, middle part, MBR pond connects the emission compliance water outlet via the 4th pump successively.
Bottom, said MBR pond is via the 3rd pump line road be linked back anaerobic reactor and anoxic pond.
Connect spiral pump connecting plate frame pressure filter after said settling tank and MBR pond bottom is connected sludge thickener through sludge pipe, sludge thickener top connects equalizing tank through water pipe.
Water inlet and water distribution system, reactor body and triphase separator are set in the said anaerobic reactor, and said MBR is provided with membrane bioreactor and aerating system in the pond.
Here, MBR is the English abbreviation of membrane bioreactor (Membrane Bio-Reactor).
Through wastewater from chemical industry is classified; The high density brine waste is evaporated to supersaturation postcooling crystal desalination through the thin film evaporation reactor drum; The concentrating spent liquor circulating and evaporating steams liquid and other spent process water mixed collections in equalizing tank, carries out follow-up iron carbon class Fenton and flocculation precipitation reaction; Anaerobic-anoxic-MBR biochemical treatment is carried out in water outlet, the treat effluent tube drainage of receiving up to standard.
The utility model is with strong points, effect is remarkable, satisfies sewage plant after the wastewater treatment and receives the tube drainage standard, and occupation area of equipment dwindles greatly.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and instance the present invention is done further description.
As shown in Figure 1; The water collecting basin that compiles high slat-containing wastewater, with pipe connection thin film evaporation reactor drum, the lower pipeline of thin film evaporation reactor drum connects crystallization kettle through a noncorrosive pump; The top of the crystallization kettle water collecting basin that is linked back after via filtering layer, the lower pipeline of crystallization kettle connects the abraum salt relief outlet.
After said thin film evaporation reactor drum top connects equalizing tank through steam-pipe; With pipe connection first pump, iron charcoal pond, Fenton's reaction pond, settling tank, biochemical equalizing tank, second pump, anaerobic reactor, anoxic pond and MBR pond, middle part, MBR pond connects the emission compliance water outlet via the 4th pump successively.
Bottom, said MBR pond is via the 3rd pump line road be linked back anaerobic reactor and anoxic pond.
Connect spiral pump connecting plate frame pressure filter after said settling tank and MBR pond bottom is connected sludge thickener through sludge pipe, sludge thickener top connects equalizing tank through water pipe.
Water inlet and water distribution system, reactor body and triphase separator are set in the said anaerobic reactor, and said MBR is provided with membrane bioreactor and aerating system in the pond.
High saliferous wastewater from chemical industry thin film evaporation desalination: carry out evaporation concentration in the thin-film evaporator with being promoted to after high saliferous wastewater from chemical industry pH regulator to the alkalescence; According to the sodium chloride saturated solution solubility curve; The high more principle of the high more saturated solution concentration of temperature is concentrated into saturated solution with the waste water intensification, and cooling forms the supersaturated solution crystallization and analyses salt again; Concentrating spent liquor is back in the vaporizer with fresh wastewater evaporation concentration once more after filtering, and abraum salt is entrusted has qualification enterprise to recycle.Steaming liquid entering wastewater equalization pond compiles.
Iron charcoal class Fenton: equalizing tank waste water adds H after the iron charcoal is handled 2O 2React and add alkali lye NaOH after 1 hour again and regulate pH=8~9, add PAM and help flocculation.Further the hard-degraded substance open loop is increased generate subsequent metallization processes removal effect.
Anaerobic-anoxic-MBR technology: through anaerobic reaction, part hardly degraded organic substance in the waste water further is decomposed into small molecules is prone to degradation material,, improve waste water B/C, be convenient to the carrying out of follow-up biochemical treatment with the ammonification of part organonitrogen.The hydraulic detention time here is 48 hours.
The anaerobic treatment water outlet gets into the hypoxia response pond; Further degradation of organic substances; Residue organonitrogen in the waste water is continued ammonification, and mixed solution is partly refluxed to anoxic pond after MBR handles nitration reaction simultaneously, carries out the denitrification denitrogenation reaction; Further utilize denitrification to remove the part hard-degraded substance, reduce waste water COD and total nitrogen.The hydraulic detention time here is 24 hours.
Anaerobic treatment waste water gets into the MBR membrane bioreactor, and the ammonia nitrogen in the waste water carries out nitration reaction, and organism further assimilates and dissimilation, and the catabolite majority becomes harmless CO 2And H 2O, the assimilation material becomes the component of mikrobe.The MBR water outlet is the tube drainage of receiving up to standard directly.The hydraulic detention time here is 24 hours.
Process explanation is following:
1, thin film evaporation is analysed reactant salt: high slat-containing wastewater is collected to water collecting basin separately.Xiang Chizhong adds NaOH (concentration≤5%), adopts pneumatic blending, makes to mix, and regulates pH value to 8~9.Water collecting basin rises to the thin film evaporation reactor drum with noncorrosive pump and evaporates, and being concentrated into waste water wherein, sodium chloride solution reaches capacity.Saturated solution is drained into the crystallization kettle cooling, and abraum salt is separated out, and filters desalination, and the high slat-containing wastewater water collecting basin of filtrating back circulates concentrated.Thin-film evaporator steams liquid and carries out subsequent disposal together with other waste water.
2, equalizing tank: equalizing tank compiles thin-film evaporator and steams liquid and other trade effluents, utilizes pneumatic blending, adds H 2SO 4(concentration≤50%) is regulated pH2~3, is promoted to iron charcoal pond after the homogeneous freight volume and carries out the little electrolysis treatment of iron charcoal.
3, iron charcoal Fenton's reaction: the pond water outlet of iron charcoal adds, and utilizes mechanical stirring, adds H 2O 2(concentration≤30%) behind the reaction 1h, adds NaOH (concentration≤5%), and adjusting adds the PAM flocculation sediment behind pH8~9, and the deposition supernatant gets into biochemical equalizing tank.H 2O 2(concentration≤30%) dosage: 1 ‰
4, anaerobic-anoxic-MBR handles: the waste water of biochemical equalizing tank evenly is transported to anaerobic reactor with pump.Control dissolved oxygen content DO is below 0.5mg/L.
Anaerobic reactor comprises: water inlet and water distribution system, reactor body and triphase separator.Anaerobic reactor residence time 48h.The anaerobic reactor water outlet gets into anoxic pond.
Biologic packing material is installed in the anoxic pond, aerating system 1 cover, continuous aeration, control dissolved oxygen content DO is between 0.5~2mg/L.Anoxic reacter residence time 24h.The anaerobic reactor water outlet gets into MBR membrane biological reaction pond.
Place membrane bioreactor in the MBR pond, aerating system 1 cover, continuous aeration, intermittently water outlet, 8min is opened in suction pump, stops 2min.Control dissolved oxygen content DO is at 2~4mg/L., satisfy sewage plant and receive the tube drainage standard less than 300mg/L through membrane sepn water outlet COD.
5, sludge treatment: biochemical excess sludge is back to anaerobic reactor, anoxic pond and sludge thickener as required.Materialized mud directly enters sludge thickener, sedimentation once more behind the mud entering sludge thickener, and lower floor's mud is by pump delivery to plate-and-frame filter press processed, the equalizing tank of filtrating back.

Claims (3)

1. one kind high saliferous chemical wastewater treatment system is characterized in that,
The water collecting basin that compiles high slat-containing wastewater; With pipe connection thin film evaporation reactor drum, the lower pipeline of thin film evaporation reactor drum connects crystallization kettle through a noncorrosive pump, the top of the crystallization kettle water collecting basin that is linked back after via filtering layer; The lower pipeline of crystallization kettle connects the abraum salt relief outlet
After said thin film evaporation reactor drum top connects equalizing tank through steam-pipe; Successively with pipe connection first pump, iron charcoal pond, Fenton's reaction pond, settling tank, biochemical equalizing tank, second pump, anaerobic reactor, anoxic pond and MBR pond; Middle part, MBR pond connects the emission compliance water outlet via the 4th pump
Bottom, said MBR pond is via the 3rd pump line road be linked back anaerobic reactor and anoxic pond,
Connect spiral pump connecting plate frame pressure filter after said settling tank and MBR pond bottom is connected sludge thickener through sludge pipe, sludge thickener top connects equalizing tank through water pipe,
Here, MBR is the English abbreviation of membrane bioreactor.
2. high saliferous chemical wastewater treatment according to claim 1 system is characterized in that, water inlet and water distribution system, reactor body and triphase separator are set in the said anaerobic reactor.
3. high saliferous chemical wastewater treatment according to claim 1 system is characterized in that said MBR is provided with membrane bioreactor and aerating system in the pond.
CN2012200141612U 2012-01-13 2012-01-13 System for treating high-salinity wastewater from chemical industry Expired - Fee Related CN202449962U (en)

Priority Applications (1)

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CN2012200141612U CN202449962U (en) 2012-01-13 2012-01-13 System for treating high-salinity wastewater from chemical industry

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Application Number Priority Date Filing Date Title
CN2012200141612U CN202449962U (en) 2012-01-13 2012-01-13 System for treating high-salinity wastewater from chemical industry

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103539314A (en) * 2013-09-25 2014-01-29 安徽省绿巨人环境技术有限公司 High-concentration degradation-resistant poisonous and harmful organic industrial wastewater treatment process and device
CN104478175A (en) * 2014-12-24 2015-04-01 北京桑德环境工程有限公司 Treatment system and method for biogas slurry produced from anaerobic fermentation of kitchen waste
CN105314794A (en) * 2014-09-28 2016-02-10 苏州市白云环保工程设备有限公司 Sodium carboxymethyl cellulose production wastewater treatment process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103539314A (en) * 2013-09-25 2014-01-29 安徽省绿巨人环境技术有限公司 High-concentration degradation-resistant poisonous and harmful organic industrial wastewater treatment process and device
CN105314794A (en) * 2014-09-28 2016-02-10 苏州市白云环保工程设备有限公司 Sodium carboxymethyl cellulose production wastewater treatment process
CN104478175A (en) * 2014-12-24 2015-04-01 北京桑德环境工程有限公司 Treatment system and method for biogas slurry produced from anaerobic fermentation of kitchen waste
CN104478175B (en) * 2014-12-24 2016-08-24 北京桑德环境工程有限公司 The processing system of a kind of kitchen castoff anaerobic fermentation biogas slurry and method

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Granted publication date: 20120926

Termination date: 20160113