CN205328787U - Zinc borate waste water's resourceful treatment system - Google Patents
Zinc borate waste water's resourceful treatment system Download PDFInfo
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- CN205328787U CN205328787U CN201620036700.0U CN201620036700U CN205328787U CN 205328787 U CN205328787 U CN 205328787U CN 201620036700 U CN201620036700 U CN 201620036700U CN 205328787 U CN205328787 U CN 205328787U
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Abstract
The utility model discloses a zinc borate waste water's resourceful treatment system, including acid -base equalizing basin, MVR evaporimeter, crystallizer, reation kettle and desicator, the import and the waste water access connection of acid -base equalizing basin export the access connection with the MVR evaporimeter, the concentrate export of MVR evaporimeter and the access connection of first buffer tank, the condensate outlet and the second buffer tank of MVR evaporimeter are connected, and the export and the wastewater discharge port of second buffer tank are connected, the export of first buffer tank and the access connection of crystallizer, the export and the reation kettle of crystallizer are connected, reation kettle's the first export and the access connection of MVR evaporimeter, and the second export is connected with the desicator. The utility model discloses a resourceful treatment system of waste water not only can reach valuable resources such as the purpose of discharge to reach standard waste water, the all right high -efficient zinc borate of retrieving in the waste water, sodium sulphate to the fresh water (FW) retrieval and utilization also can be regarded as to waste water after the processing, has good economic benefits.
Description
Technical field
This utility model belongs to waste water treatment and environmental technology field, is specifically related to a kind of Firebrake ZB and produces the recycling treatment system of waste water。
Background technology
China is as a developing country, not only shortage of water resources phenomenon is increasingly serious, and water pollution situation is extremely serious, especially industrial wastewater pollution, the discharge capacity of industrial wastewater is big, and pollutant kind is many, pollution range is wide, such as direct discharge, not only local environment brings great harm, also results in the waste of water resource。Wherein, the waste water of some industries contains the component having recovery value, and this kind of direct discharging of waste water not only results in environmental problem, also result in the waste of resource, so during for this kind of waste water treatment, not only needing to make discharged wastewater met the national standard, also needing to carry out the recovery of resource in waste water。
Summary of the invention
Goal of the invention: this utility model purpose is in that for the deficiencies in the prior art, it is provided that a kind of Firebrake ZB produces the recycling treatment system of waste water, it is ensured that discharge of wastewater is up to standard, reduces solid waste yield, reclaims valuable resource in waste water simultaneously。
Technical scheme: Firebrake ZB described in the utility model produces the recycling treatment system of waste water, including acid-alkali accommodation pond, MVR vaporizer, crystallizer, reactor and exsiccator；
The import in described acid-alkali accommodation pond is connected with waste water inlet, and outlet is connected with the import of described MVR vaporizer；The concentrated solution outlet of described MVR vaporizer is connected by the import of centrifuge and the first surge tank, the condensation-water drain of described MVR vaporizer and the second surge tank connect, the outlet of described second surge tank is connected with discharge of wastewater mouth, and the outlet of described first surge tank is connected with the import of described crystallizer；The outlet of described crystallizer is connected with described reactor by centrifuge, described reactor is for adding alkali reaction still, and the first outlet of described reactor is connected with the import of described MVR vaporizer, and the second outlet is connected with described exsiccator, described exsiccator is evaporated waste water, and solid waste is discharged in solid waste outlet。
This utility model further preferably technical scheme is, is additionally provided with preheater in described MVR vaporizer, and the import of described preheater is connected with the condensation-water drain of described MVR vaporizer, and the outlet of preheater is connected with the import of described second surge tank。
Preferably, between the import in described waste water inlet and described acid-alkali accommodation pond, be additionally provided with filtering grid, described filtering grid by the gap length between some grizzly bars differ to grid combination formed。
Preferably, described exsiccator is solid caustic soda exsiccator。
Preferably, it is provided with aerator, agitating device and pH value in described acid-alkali accommodation pond and regulates device。
Recycling treatment system specific works process of the present utility model is:
Pending waste water retains after big float entrance regulating reservoir through grid, is aided with air stirring in pond, play all with the effect of water quality；
Regulating reservoir water outlet enters preheater heating, waste water after heating enters the tube side of MVR vaporizer and is heated again, the steam that waste water produces after MVR vaporizer is heated enters compressor, enters vaporizer shell side after compression, by the Waste water concentrating in tube side to desired concn, simultaneously, the indirect steam that waste water evaporation produces is condensed into water, and high-temperature condensation water enters the second surge tank by after preheater, and the concentrated solution in tube side enters centrifuge, isolating salinity, centrifuge mother liquor enters the first surge tank；
Water part in second surge tank as fresh water (FW) reuse, can be partially into blowoff basin qualified discharge；
First surge tank water outlet enters crystallizer, utilizes valuable constituent solubility with temperature to reduce and reduces thus the character that precipitates out, lowered the temperature by mother solution, makes valuable constituent in mother solution separate through centrifuge, and centrifuge mother liquor enters reactor；
Centrifuge mother liquor enters and adds alkali reaction still, utilizing zinc ion to form the character of precipitation in the basic conditions, reclaim zinc ion therein, zinc hydroxide isolated by machine by centrifugation, centrifuge mother liquor major part Returning evaporimeter circulating and evaporating is to reduce solid waste amount and to increase evaporation capacity, and fraction enters exsiccator；
Being evaporated by the mother solution entering exsiccator with the enrichment of chloride ion in minimizing system, a small amount of solid of generation is discharged by solid waste outlet。
Beneficial effect: waste water reclaiming of the present utility model processes system not only up to the purpose to waste discharge up to standard, solve water pollution problems, can also the valuable resource such as boric acid in high efficiente callback waste water, sodium sulfate, and the waste water after processing also can as fresh water (FW) reuse, realize utilization of wastewater resource, there is good economic benefit；Simultaneously in this utility model owing to having reclaimed boric acid in a large number, salt grades solid matter, and solid waste discharge is greatly reduced。
Accompanying drawing explanation
Fig. 1 is the structural representation that Firebrake ZB described in the utility model produces the recycling treatment system of waste water。
Detailed description of the invention
Below by accompanying drawing, technical solutions of the utility model are described in detail, but protection domain of the present utility model is not limited to described embodiment。
Embodiment: a kind of Firebrake ZB produces the recycling treatment system of waste water, including acid-alkali accommodation pond, MVR vaporizer, crystallizer, reactor and exsiccator；
The import in acid-alkali accommodation pond is connected with waste water inlet, outlet is connected with the import of MVR vaporizer, acid-alkali accommodation is provided with aerator in pond, agitating device and pH value regulate device, be additionally provided with filtering grid between the import in waste water inlet and acid-alkali accommodation pond, filtering grid by the gap length between some grizzly bars differ to grid combination formed；
The concentrated solution outlet of MVR vaporizer is connected by the import of centrifuge and the first surge tank, the condensation-water drain of MVR vaporizer and the second surge tank connect, it is additionally provided with preheater in MVR vaporizer, the import of preheater is connected with the condensation-water drain of MVR vaporizer, the outlet of preheater is connected with the import of the second surge tank, the outlet of the second surge tank is connected with discharge of wastewater mouth, and the outlet of the first surge tank is connected with the import of crystallizer；
The outlet of crystallizer is connected with reactor by centrifuge, and reactor is for adding alkali reaction still, and the first outlet of reactor is connected with the import of MVR vaporizer, second outlet is connected with exsiccator, exsiccator is solid caustic soda exsiccator, and exsiccator is evaporated waste water, and solid waste is discharged in solid waste outlet。
Produce waste water for a certain Firebrake ZB in the present embodiment to be described in detail:
This burst of waste water main component such as following table, it is necessary to reclaim the sodium sulfate in waste water and boric acid:
Table 1 waste component table
Pending waste water retains entrance acid-alkali accommodation pond after big float through grid, pond is aided with air stirring all and water quality, regulating reservoir water outlet enters preheater heating, waste water after heating enters the tube side heating of MVR vaporizer, at about 100 DEG C heating evaporations, the dissolubility of 100 DEG C of sodium sulfate is 42g, when evaporating 58% water, sodium sulfate reaches capacity, continue evaporation, sodium sulfate reaches supersaturation and constantly precipitates out, now boric acid due to content low, not up to saturated and do not precipitate out, when evaporating 80% water, boric acid reaches capacity, stop evaporation, filtered while hot, may separate out pure sodium sulfate。
Steam is condensed into high-temperature condensation water, high-temperature condensation water enters preheater heated material, condensation at low temperature water outlet enters the second surge tank, partly as process water reuse, remainder standard discharge, concentrated solution enters centrifuge, and isolated sodium sulfate purity is more than 95%, for selling, the mother solution removing sodium sulfate enters the first surge tank；Lower the temperature in a crystallizer, owing to boric acid dissolubility reduces rapidly thus precipitating out, and in dropping to 40 DEG C of processes, sodium sulfate dissolubility slightly raises, so will not precipitate out, therefore cool to about 40 DEG C and can obtain pure boric acid, the boric acid purity of centrifugation is more than 92%, remaining a small amount of mother solution enters after adding alkali reaction still removal zinc ion, major part returns MVR vaporizer circulating and evaporating to reduce solid waste amount and to increase evaporation capacity, fraction enters exsiccator and is evaporated, and a small amount of solid waste of formation is as fixed-end forces。
Although as it has been described above, represented and described this utility model with reference to specific preferred embodiment, but it shall not be construed as the restriction to this utility model self。Under the spirit and scope premise of the present utility model defined without departing from claims, it can be made in the form and details various change。
Claims (5)
1. the recycling treatment system of a Firebrake ZB production waste water, it is characterised in that include acid-alkali accommodation pond, MVR vaporizer, crystallizer, reactor and exsiccator；
The import in described acid-alkali accommodation pond is connected with waste water inlet, and outlet is connected with the import of described MVR vaporizer；The concentrated solution outlet of described MVR vaporizer is connected by the import of centrifuge and the first surge tank, the condensation-water drain of described MVR vaporizer and the second surge tank connect, the outlet of described second surge tank is connected with discharge of wastewater mouth, and the outlet of described first surge tank is connected with the import of described crystallizer；The outlet of described crystallizer is connected with described reactor by centrifuge, described reactor is for adding alkali reaction still, and the first outlet of described reactor is connected with the import of described MVR vaporizer, and the second outlet is connected with described exsiccator, described exsiccator is evaporated waste water, and solid waste is discharged in solid waste outlet。
2. Firebrake ZB according to claim 1 produces the recycling treatment system of waste water, it is characterized in that, being additionally provided with preheater in described MVR vaporizer, the import of described preheater is connected with the condensation-water drain of described MVR vaporizer, and the outlet of preheater is connected with the import of described second surge tank。
3. Firebrake ZB according to claim 1 produces the recycling treatment system of waste water, it is characterized in that, be additionally provided with filtering grid between the import in described waste water inlet and described acid-alkali accommodation pond, described filtering grid by the gap length between some grizzly bars differ to grid combination formed。
4. Firebrake ZB according to claim 1 produces the recycling treatment system of waste water, it is characterised in that described exsiccator is solid caustic soda exsiccator。
5. Firebrake ZB according to claim 1 produces the recycling treatment system of waste water, it is characterised in that is provided with aerator, agitating device and pH value in described acid-alkali accommodation pond and regulates device。
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| CN201620036700.0U CN205328787U (en) | 2016-01-13 | 2016-01-13 | Zinc borate waste water's resourceful treatment system |
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| CN201620036700.0U CN205328787U (en) | 2016-01-13 | 2016-01-13 | Zinc borate waste water's resourceful treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689544A (en) * | 2018-07-24 | 2018-10-23 | 苏州方舟环保科技有限公司 | A kind of the waste water containing boron processing unit and method of zero-emission |
| CN115159738A (en) * | 2022-08-19 | 2022-10-11 | 山东五维阻燃科技股份有限公司 | Method for separating and purifying zinc borate production wastewater by using phase diagram |
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2016
- 2016-01-13 CN CN201620036700.0U patent/CN205328787U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108689544A (en) * | 2018-07-24 | 2018-10-23 | 苏州方舟环保科技有限公司 | A kind of the waste water containing boron processing unit and method of zero-emission |
| CN115159738A (en) * | 2022-08-19 | 2022-10-11 | 山东五维阻燃科技股份有限公司 | Method for separating and purifying zinc borate production wastewater by using phase diagram |
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