CN204079524U - A kind of high salt high ammonia-nitrogen sewage treatment system - Google Patents
A kind of high salt high ammonia-nitrogen sewage treatment system Download PDFInfo
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- CN204079524U CN204079524U CN201420387421.XU CN201420387421U CN204079524U CN 204079524 U CN204079524 U CN 204079524U CN 201420387421 U CN201420387421 U CN 201420387421U CN 204079524 U CN204079524 U CN 204079524U
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Abstract
The utility model discloses a kind of high salt high ammonia-nitrogen sewage treatment system, comprise absorption unit, this absorption unit comprises hydrogen, H chloride absorber, water cooler and squirt pump, squirt pump is provided with hydrogenchloride import, the outlet of its vapour-liquid is connected with the vapour-liquid import of hydrogen, H chloride absorber, and the liquid exit of hydrogen, H chloride absorber is connected with the import of water cooler, and the outlet of water cooler is connected with the liquid-inlet of squirt pump, described absorption unit is two covers, is respectively first order absorption device and sponge oil unit; Also comprise sodium-chlor separator, ammonium chloride separator and salt acid storage tank; The hydrogen, H chloride absorber of first order absorption device is provided with mother liquor import, and its liquid exit is connected with the import of sodium-chlor separator, and the liquid exit of sodium-chlor separator is connected with the liquid-inlet of the hydrogen, H chloride absorber of sponge oil unit; The liquid exit of the hydrogen, H chloride absorber of sponge oil unit is connected with the import of ammonium chloride separator, and the liquid exit of ammonium chloride separator is connected with salt acid storage tank.
Description
Technical field
The utility model belongs to chemical wastewater treatment technical field, is specifically related to a kind of high salt high ammonia-nitrogen sewage treatment system.
Background technology
Hydrazo-dicarbonamide is a kind of important fine-chemical intermediate, mainly for the production of Cellmic C 121 (Foamer ADC).Hydrazo-dicarbonamide preparation technology can produce the waste liquid of a large amount of high salt height ammonia nitrogen usually; Cl-, Na+ plasma is also comprised in waste liquid; complicated; wherein C 1 content is between 170-210g/L; NH3-N content is between 22-30g/L; if not treated direct discharge, can make body eutrophication, harm ecotope.High salt high ammonia-nitrogen wastewater conventional treatment process is " deamination-biochemical treatment-qualified discharge ", the method except to add in alkali and except, also need thin up, physico-chemical pretreatment, add carbon source and carry out the operation stepss such as biochemical second-stage treatment, treatment unit is large, complex procedures and processing costs is high.
At present, the domestic treatment research to hydrazo-dicarbonamide mother liquor, mainly contains following several respects: 1) evaporation concentration reclaims sodium-chlor, ammonia chloride craft, and containing a large amount of salt in hydrazo-dicarbonamide mother liquor, evaporation recovery obtains mixed salt; This process operation cost is higher, and the mixed salt of recovery is difficult to be separated, and does not have too large meaning to chlor-alkali or other industry production; 2) add alkali stripping-washing and reclaim weak ammonia technique: experiment proves, water at normal temperature is washed the weak ammonia concentration obtained and is generally no more than 2 ~ 3%, and the lower concentration weak ammonia amount of generation is very big, and use value is very low, and can not directly discharge, become larger source of pollution; 3) oxidizing process: generally, oxidizing process is applicable to the dirty hydration process of low-concentration ammonia-nitrogen, and utilize the ammonia nitrogen in high density in the secondary chlorine products oxidative condensation mother liquor produced in chlor-alkali industry and organism, the amount of required chlorine products is very big, the secondary chlorine products output of general chlor-alkali enterprises can not meet the demands far away and also processing costs too high.Meanwhile, above-mentionedly add the sewage treatment process such as alkali stripping, oxidation, consider the removal of condensed mother liquor middle and high concentration ammonia-state nitrogen only unilaterally, and the inorganic salt still containing complicated high density in sewage after process, inhibit follow-up biochemical wastewater treatment.
Patent CN202226657U discloses a kind of production system of preparing hydrochloric acid by absorbing hydrogen chloride, comprises hydrochloric acid circulation groove, refrigerating unit and squirt pump, and the jet exit of squirt pump and the entrance of refrigerating unit are all communicated with described hydrochloric acid circulation groove.This system can reclaim the dilute hydrochloric acid in hydrazo-dicarbonamide mother liquor, but does not recycle for the inorganic salts ingredients in hydrazo-dicarbonamide mother liquor, causes great waste to resource.
Summary of the invention
The purpose of this utility model is to provide a kind of high salt high ammonia-nitrogen sewage treatment system, solves the problem that prior art cannot be recycled inorganic salts ingredients in hydrazo-dicarbonamide mother liquor.
In order to realize above object, the technical scheme that the utility model adopts is: a kind of high salt high ammonia-nitrogen sewage treatment system, comprise absorption unit, described absorption unit comprises hydrogen, H chloride absorber, water cooler and squirt pump, described squirt pump is provided with hydrogenchloride import, the vapour-liquid outlet of squirt pump is connected with the vapour-liquid import of hydrogen, H chloride absorber, the liquid exit of described hydrogen, H chloride absorber is connected with the import of water cooler, the outlet of water cooler is connected with the liquid-inlet of squirt pump, described absorption unit is two covers, be respectively first order absorption device and sponge oil unit, also comprise sodium-chlor separator, ammonium chloride separator and salt acid storage tank, the hydrogen, H chloride absorber of described first order absorption device is provided with mother liquor import, the liquid exit of the hydrogen, H chloride absorber of first order absorption device is connected with the import of sodium-chlor separator, and the liquid exit of sodium-chlor separator is connected with the liquid-inlet of the hydrogen, H chloride absorber of sponge oil unit, the liquid exit of the hydrogen, H chloride absorber of described sponge oil unit is connected with the import of ammonium chloride separator, and the liquid exit of ammonium chloride separator is connected with salt acid storage tank.
Also comprise device for absorbing tail gas, the offgas outlet of hydrogen, H chloride absorber of described first order absorption device, sponge oil unit is connected with the inlet exhaust gas of device for absorbing tail gas.
Described device for absorbing tail gas comprises tail gas absorber and tail gas absorption groove, the inlet exhaust gas of described tail gas absorber is connected with the offgas outlet of the hydrogen, H chloride absorber of first order absorption device, sponge oil unit, the liquid exit of tail gas absorber is connected with the liquid-inlet of tail gas absorption groove, and the liquid exit of tail gas absorption groove is connected with the liquid-inlet of tail gas absorber.
Described tail gas absorption groove is provided with mother liquor import, and the liquid exit of tail gas absorption groove is connected with the mother liquor import of the hydrogen, H chloride absorber of first order absorption device.
Also comprise mother liquor storage tank, the mother liquor outlet of described mother liquor storage tank is connected with the mother liquor import of the HCl separation device of first order absorption device, the mother liquor import of tail gas absorption groove respectively.
Also comprise hydrogenchloride surge tank, described hydrogenchloride surge tank is provided with hydrogenchloride import, and the outlet of its hydrogenchloride is connected with the hydrogenchloride import of the squirt pump of first order absorption device, sponge oil unit respectively.
High salt high ammonia-nitrogen sewage treatment system of the present utility model, adopt two cover absorption units, by segmentation salting-out process, the ammonification nitrogen in high salt high ammonia-nitrogen wastewater and inorganic salt are separated out, reclaim hydrochloric acid, sodium-chlor and ammonium chloride three kinds of products of there is real economy and being worth respectively, turn waste into wealth, improve the comprehensive utilization ratio of high salt high ammonia-nitrogen wastewater; Decrease the discharge of waste water, energy consumption is low.Device for absorbing tail gas achieves the tail gas utilizing mother liquor to produce to absorb two-stage absorption unit, makes full use of hydrogen chloride gas on the one hand, improves the utilization ratio of resource; Avoid the pollution of exhaust emissions to environment on the other hand, and reduce the investment of vent gas treatment, there is good economic benefit and environmental benefit.There is significant economic benefit and environmental benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high salt high ammonia-nitrogen sewage treatment system of embodiment 1;
Fig. 2 is the structural representation of the high salt high ammonia-nitrogen sewage treatment system of embodiment 2.
Embodiment
Below in conjunction with embodiment, the utility model is further described.
The high salt high ammonia-nitrogen sewage treatment system of embodiment 1, as shown in Figure 1, comprise two cover absorption units, be respectively first order absorption device and sponge oil unit, described first order absorption device comprises one-level hydrogen, H chloride absorber 2, one-level water cooler 3 and one-level squirt pump 5, the vapour-liquid outlet of described one-level squirt pump 5 is connected with the vapour-liquid import of one-level hydrogen, H chloride absorber 2, the liquid exit of described one-level hydrogen, H chloride absorber 2 is connected with the import of one-level water cooler 3, and the outlet of one-level water cooler 3 is connected with the liquid-inlet of one-level squirt pump 5; Described sponge oil unit comprises secondary chlorination hydrogen resorber 7, secondary coolers 8 and two-stage injection pump 9, the vapour-liquid outlet of described two-stage injection pump 9 is connected with the vapour-liquid import of secondary chlorination hydrogen resorber 7, the liquid exit of described secondary chlorination hydrogen resorber 7 is connected with the import of secondary coolers 8, and the outlet of secondary coolers 8 is connected with the liquid-inlet of two-stage injection pump 9; Also comprise mother liquor storage tank 1, hydrogenchloride surge tank 4, sodium-chlor separator 6, ammonium chloride separator 10 and salt acid storage tank 11, the hydrogenchloride outlet of described hydrogenchloride surge tank 4 is connected with the hydrogenchloride import of one-level squirt pump 5, two-stage injection pump 9 respectively; The mother liquor import of described one-level hydrogen, H chloride absorber 2 is connected with the mother liquor outlet of mother liquor storage tank 1, the liquid exit of one-level hydrogen, H chloride absorber 2 is connected with the import of sodium-chlor separator 6, and the liquid exit of sodium-chlor separator 6 is connected with the liquid-inlet of secondary chlorination hydrogen resorber 7; The liquid exit of secondary chlorination hydrogen resorber 7 is connected with the import of ammonium chloride separator 10, and the liquid exit of ammonium chloride separator 10 is connected with salt acid storage tank 11.
The high salt high ammonia-nitrogen sewage treatment system of the present embodiment, during operation, the high salt high ammonia-nitrogen wastewater collected is conveyed into mother liquor storage tank 1, enter one-level hydrogen, H chloride absorber 2 from mother liquor storage tank 1, the material in one-level hydrogen, H chloride absorber 2 enters one-level hydrogen, H chloride absorber 2 through one-level water cooler 3 from one-level squirt pump 5 and circulates; Hydrogen chloride gas enters one-level squirt pump 5 through hydrogenchloride surge tank 4, and hydrogenchloride is absorbed by material in one-level squirt pump 5, and when after Matter Transfer absorbing hydrogen chloride to finite concentration, deliver to sodium-chlor separator 6 and carry out solid-liquid separation, solid is sodium-chlor; Liquid material after separation delivers to secondary chlorination hydrogen resorber 7, material in secondary chlorination hydrogen resorber 7 enters secondary chlorination hydrogen resorber 7 through secondary coolers 8 from two-stage injection pump 9 and circulates, hydrogen chloride gas from hydrogenchloride surge tank 4 enters two-stage injection pump 9, hydrogenchloride is absorbed by material in two-stage injection pump 9, when after Matter Transfer absorbing hydrogen chloride to finite concentration, deliver to ammonium chloride separator 10 and carry out solid-liquid separation, solid is ammonium chloride, liquid is finished product hydrochloric acid, delivers to salt acid storage tank 11.
The high salt high ammonia-nitrogen sewage treatment system of the present embodiment, adopt two cover absorption units, by segmentation salting-out process, the ammonification nitrogen in high salt high ammonia-nitrogen wastewater and inorganic salt are separated out, reclaim hydrochloric acid, sodium-chlor and ammonium chloride three kinds of products of there is real economy and being worth respectively, turn waste into wealth, improve the comprehensive utilization ratio of high salt high ammonia-nitrogen wastewater; Decrease the discharge of waste water, energy consumption is low, has significant economic benefit and environmental benefit.
The high salt high ammonia-nitrogen sewage treatment system of embodiment 2, difference from Example 1 is, as shown in Figure 2, also comprise device for absorbing tail gas, described device for absorbing tail gas comprises tail gas absorber 12 and tail gas absorption groove 13, the inlet exhaust gas of described tail gas absorber 12 is connected with the offgas outlet of one-level hydrogen, H chloride absorber 2, secondary chlorination hydrogen resorber 7, the liquid exit of tail gas absorber 12 is connected with the liquid-inlet of tail gas absorption groove 13, and the liquid exit of tail gas absorption groove 13 is connected with the liquid-inlet of tail gas absorber 12; The mother liquor import of described tail gas absorption groove 13 is connected with the mother liquor outlet of mother liquor storage tank 1, and the liquid exit of tail gas absorption groove 13 is connected with the mother liquor import of one-level hydrogen, H chloride absorber 2.
The high salt high ammonia-nitrogen sewage treatment system of the present embodiment, during operation, the tail gas of one-level hydrogen, H chloride absorber 2 and secondary chlorination hydrogen resorber 7 delivers to tail gas absorber 12, material in mother liquor storage tank 1 is delivered to tail gas absorber 12 through tail gas absorption groove 13 and is absorbed tail gas, when material absorbs to finite concentration, deliver to one-level hydrogen, H chloride absorber 2 through tail gas absorption groove 13, continue circularly absorbing hydrogen chloride gas.
The high salt high ammonia-nitrogen sewage treatment system of the present embodiment, achieves the tail gas utilizing mother liquor to produce to absorb two-stage absorption unit, makes full use of hydrogen chloride gas on the one hand, improves the utilization ratio of resource; Avoid the pollution of exhaust emissions to environment on the other hand, and reduce the investment of vent gas treatment, there is good economic benefit and environmental benefit.
Claims (6)
1. one kind high salt high ammonia-nitrogen sewage treatment system, comprise absorption unit, described absorption unit comprises hydrogen, H chloride absorber, water cooler and squirt pump, described squirt pump is provided with hydrogenchloride import, the vapour-liquid outlet of squirt pump is connected with the vapour-liquid import of hydrogen, H chloride absorber, the liquid exit of described hydrogen, H chloride absorber is connected with the import of water cooler, the outlet of water cooler is connected with the liquid-inlet of squirt pump, it is characterized in that: described absorption unit is two covers, be respectively first order absorption device and sponge oil unit; Also comprise sodium-chlor separator, ammonium chloride separator and salt acid storage tank; The hydrogen, H chloride absorber of described first order absorption device is provided with mother liquor import, the liquid exit of the hydrogen, H chloride absorber of first order absorption device is connected with the import of sodium-chlor separator, and the liquid exit of sodium-chlor separator is connected with the liquid-inlet of the hydrogen, H chloride absorber of sponge oil unit; The liquid exit of the hydrogen, H chloride absorber of described sponge oil unit is connected with the import of ammonium chloride separator, and the liquid exit of ammonium chloride separator is connected with salt acid storage tank.
2. high salt high ammonia-nitrogen sewage treatment system according to claim 1, it is characterized in that: also comprise device for absorbing tail gas, the offgas outlet of hydrogen, H chloride absorber of described first order absorption device, sponge oil unit is connected with the inlet exhaust gas of device for absorbing tail gas.
3. high salt high ammonia-nitrogen sewage treatment system according to claim 2, it is characterized in that: described device for absorbing tail gas comprises tail gas absorber and tail gas absorption groove, the inlet exhaust gas of described tail gas absorber is connected with the offgas outlet of the hydrogen, H chloride absorber of first order absorption device, sponge oil unit, the liquid exit of tail gas absorber is connected with the liquid-inlet of tail gas absorption groove, and the liquid exit of tail gas absorption groove is connected with the liquid-inlet of tail gas absorber.
4. high salt high ammonia-nitrogen sewage treatment system according to claim 3, it is characterized in that: described tail gas absorption groove is provided with mother liquor import, the liquid exit of tail gas absorption groove is connected with the mother liquor import of the hydrogen, H chloride absorber of first order absorption device.
5. high salt high ammonia-nitrogen sewage treatment system according to claim 4, it is characterized in that: also comprise mother liquor storage tank, the mother liquor outlet of described mother liquor storage tank is connected with the mother liquor import of the HCl separation device of first order absorption device, the mother liquor import of tail gas absorption groove respectively.
6. high salt high ammonia-nitrogen sewage treatment system according to claim 1 or 5, it is characterized in that: also comprise hydrogenchloride surge tank, described hydrogenchloride surge tank is provided with hydrogenchloride import, and the outlet of its hydrogenchloride is connected with the hydrogenchloride import of the squirt pump of first order absorption device, sponge oil unit respectively.
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| CN201420387421.XU CN204079524U (en) | 2014-07-14 | 2014-07-14 | A kind of high salt high ammonia-nitrogen sewage treatment system |
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| CN201420387421.XU CN204079524U (en) | 2014-07-14 | 2014-07-14 | A kind of high salt high ammonia-nitrogen sewage treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876243A (en) * | 2015-04-15 | 2015-09-02 | 杭州海虹精细化工有限公司 | Cleaning method of biurea mother liquid |
| CN115608135A (en) * | 2022-10-08 | 2023-01-17 | 湖北泰盛化工有限公司 | Self-consistent type resource treatment method for salt-containing wastewater and hydrochloric acid-containing waste gas |
-
2014
- 2014-07-14 CN CN201420387421.XU patent/CN204079524U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876243A (en) * | 2015-04-15 | 2015-09-02 | 杭州海虹精细化工有限公司 | Cleaning method of biurea mother liquid |
| CN115608135A (en) * | 2022-10-08 | 2023-01-17 | 湖北泰盛化工有限公司 | Self-consistent type resource treatment method for salt-containing wastewater and hydrochloric acid-containing waste gas |
| WO2024074057A1 (en) * | 2022-10-08 | 2024-04-11 | 湖北泰盛化工有限公司 | Self-consistent resourceful treatment apparatus and method for salt-containing wastewater and hydrochloric acid-containing waste gas |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150714 |
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| EXPY | Termination of patent right or utility model |