CN208883643U - A kind of full factory's wastewater discharge device in coal-burning power plant - Google Patents
A kind of full factory's wastewater discharge device in coal-burning power plant Download PDFInfo
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- CN208883643U CN208883643U CN201820932717.3U CN201820932717U CN208883643U CN 208883643 U CN208883643 U CN 208883643U CN 201820932717 U CN201820932717 U CN 201820932717U CN 208883643 U CN208883643 U CN 208883643U
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Abstract
A kind of full factory's wastewater discharge device in coal-burning power plant, including chemical wastewater abatement system and desulfurization wastewater zero-emission system；Chemical wastewater abatement system includes the first reactive tank for carrying out coarse adjustment to wastewater pH, the waste water output end connection of first reactive tank is for carrying out the input terminal of the second reactive tank of accurate adjustment to wastewater pH, the input terminal of the fluid output port connection thickener of second reactive tank, the input terminal of thickener output end connection tubular membrane is separated by solid-liquid separation, the fluid output port connection filtering trough of tubular membrane is filtered, and enters desulfurization wastewater zero-emission system after RO process by the filtered waste water of filtering trough；Desulfurization wastewater zero-emission system includes that the multiple-effect separator that is connected after RO process, the tubular membrane bottom are provided with sludge dewatering system, is used by the step of waste water, improves the utilization rate of waste water, by full factory's wastewater comprehensive treatment, improves Sewage treatment rate.
Description
Technical field
The utility model relates to environmental technology field, in particular to a kind of full factory's wastewater discharge device in coal-burning power plant.
Background technique
In recent years, country and local environmental protection policy require to be increasingly stringenter.On April 2nd, 2015, " water prevention and cure of pollution action
Plan " execution has been issued, waste water treatment pressure further increases.
Efflux wastewater water in coal-burning power plant's is larger at present, and efflux wastewater is mainly chemical wastewater, desulfurization wastewater, coal water system
Effluent etc., all has salt content height, and the big feature of variation water quality, waste water outlet will pollute water environment, and need
Classification recycling and separate-recycling are carried out according to waste water quality, prevents environmentally friendly event.Therefore, there is an urgent need to establish coal-burning power plant Quan Chang
The reasonable system for handling of waste water optimizes full factory's wastewater treatment process, improves water using level, reduces unit generated energy water consume.
This patent is directed to the full factory's wastewater comprehensive treatment in coal-burning power plant, designs wastewater utilization system, establishes desulfurization wastewater
Zero discharging system, and chemical wastewater abatement system some residual strong brine and desulfurization wastewater are made entirely by way of evaporative crystallization
Factory waste water zero discharge realizes full factory's wastewater comprehensive treatment and utilization, meets the related request of the policies such as environmental protection and water-saving and emission-reducing.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is useless that the purpose of this utility model is to provide a kind of full factories, coal-burning power plant
Water tapping equipment is used by the step of waste water by optimizing full factory's water balance system, the utilization rate of waste water is improved, by complete
Factory's wastewater comprehensive treatment improves Sewage treatment rate, under the premise of ensuring equipment safety operation, realizes wastewater zero discharge.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of full factory's wastewater discharge device in coal-burning power plant, including chemical wastewater abatement system and desulfurization wastewater zero-emission system；
The chemical wastewater abatement system include for wastewater pH carry out coarse adjustment the first reactive tank, described first
The input terminal of second reactive tank of the waste water output end connection of reactive tank for carrying out accurate adjustment to wastewater pH, second reaction
The input terminal of the input terminal of the fluid output port connection thickener of slot, the thickener output end connection tubular membrane carries out solid-liquid
The fluid output port connection filtering trough of separation, tubular membrane is filtered, and passes through RO work by the filtered waste water of filtering trough
Enter desulfurization wastewater zero-emission system after skill processing；
The desulfurization wastewater zero-emission system includes and the multiple-effect separator that is connected after RO process, the tubular membrane bottom
Portion is provided with sludge dewatering system.
The desulfurization wastewater zero-emission system includes the flue gas heat-exchange unit installed on desulfurizing tower gas approach, the cigarette
Gas heat exchanger output end is provided with the heater for heating circulation fluid, and the heater output end is connected with multiple-effect separation
The output end of device, multiple-effect separator bottom is connected with heater, is provided with dehydration on the waste liquid output end of multiple-effect separator bottom
Machine is provided with dehydrated mouth on dewaterer, and air-returen flue heat exchanger is provided on heater, and it is solidifying to be provided with discharge at the top of the multiple-effect separator
The condensed water opening of reuse is born water, the opening for Absorption Desulfurization waste water, the flue gas are provided on the multiple-effect separator
Heat exchanger is provided with for absorbing hot fume and discharging the opening of hot fume.
First reactive tank and the second reactive tank is internally provided with mechanical stirring device and pH monitoring device.
The thickener is delivered to tubular membrane by circulating pump.
The sludge dewatering system includes the sludge storage tank for being connected to tubular membrane bottom, the sludge storage tank filter press
It is connected to the first reactive tank.
The filters pressing motor spindle is provided with mud cake collection.
The RO technology processing system includes that logical level-one RO system, concentrated water RO system are sequentially connected with filtering trough
Desulfurization wastewater zero-emission system, reuse water system and flushing cinder are separately connected with the outlet end of DTRO system, the concentrated water RO system
System.
A kind of application method of the full factory's wastewater discharge device in coal-burning power plant,
1) chemical wastewater abatement system will recycle after the high-quality classification of waste of low saline salinity in chemical wastewater, between reaching
It connects and reduces waste water displacement；
Waste water I flows into the first reactive tank, and NaOH and Na is added in the first reactive tank2CO3, pH coarse adjustment is carried out, carbonic acid is formed
The sediment of calcium and magnesium hydroxide, while magnesium hydroxide carries silica and forms co-precipitation, then waste water flows into the second reaction
Slot continues supplement addition medicament, carries out accurate adjustment to pH, so that reaction is more complete, two-stage reaction slot carries out mechanical stirring respectively
It is monitored with pH, the water (suspended solid generated containing reaction) after reaction overflows in thickener, is transported to circulating pump
Tubular membrane is separated by solid-liquid separation, and the water of big flow recycles between Waste water concentrating slot and tubular membrane at this time, and penetrates tubular membrane
Water (water for being equal to input) is then sent to filtering trough short, regard part after pH readjustment to neutrality as advanced treating
The water inlet of system does desalting processing in further multi-stage PCE and DTRO in level-one RO and concentrated water RO and DTRO；
Meanwhile tubular membrane also generates a certain amount of concentrate (sludge), needs to be sent to sludge dewatering system, by sheet frame pressure
It entrusts after filter dehydration, outside dehydrated sludge cake and handles or directly fill, desliming water then flows back into system front end and handles again；
2) the remaining strong brine of chemical wastewater abatement system enters desulfurization wastewater zero-emission system；
3) desulfurization wastewater zero-emission system
On desulfurizing tower gas approach, flue gas heat-exchange unit is installed, it will using the heat of hot fume in desulfurizing tower gas approach
Its interior heat transferring medium heating, then heat circulation fluid by heater by thermal medium and enter desulfurization wastewater multiple-effect separator, it is
Desulfurization wastewater zero discharge treatment provides heat source；
The desulfurization waste liquor after desalting processing in DTRO (is completed by multiple-effect separator from crystallization technique using multi-effect flashing steam
Multiple-effect evaporation crystallization process), the waste liquid in multiple-effect separator is transported to former desulphurization system vacuum belt dewaterer and is dehydrated,
Crystallization raffinate transports multiple-effect separator back by heater and continues cycling through use；
The steam that final multiple-effect separator evaporation generates can by condenser by steam condensation at water reuse.
Air-returen flue heat exchanger is provided on the heater, the delivery outlet of flue gas heat-exchange unit is provided with hot fume outlet.
The utility model has the beneficial effects that
So that heat transferring medium in it is heated up by chimney heat exchanger 14, then heats circulation fluid by heater 12 by thermal medium
And enter desulfurization wastewater multiple-effect separator 11, heat source is provided for desulfurization wastewater zero discharge treatment, boiler efficiency is not influenced, but
The electric heating energy consumption of traditional heating mode is saved, while operating cost is minimum, investment cost is small, and waste water energy effectively recycles.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
1 reactive tank 1；2 reactive tanks 2；3 thickeners；4 tubular membranes；5 sludge storage tanks；6 filter presses；7 filtering troughs；8 level-ones
RO；9 concentrated water RO；10DTRO；11 multiple-effect separators；12 heaters；13 dewaterers；14 chimney heat exchangers；Water in I；II mud cake is received
Collection；III: flushing cinder system；IV recycle-water；V dehydration；VI air-returen flue heat exchanger；VII hot fume；VIII hot fume；IX desulfurization is useless
Water；X condensation water recycling.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of full factory's wastewater discharge device in coal-burning power plant, including chemical wastewater abatement system and desulfurization wastewater
Zero-emission system；
The chemical wastewater abatement system includes the first reactive tank 1 for carrying out coarse adjustment to wastewater pH, and described the
For carrying out the input terminal of the second reactive tank of accurate adjustment 2 to wastewater pH, described second is anti-for the waste water output end connection of one reactive tank 1
Answer the fluid output port of slot 2 to connect the input terminal of thickener 3, the input terminal of described 3 output end of the thickener connection tubular membrane 4 into
Row is separated by solid-liquid separation, and the fluid output port connection filtering trough 7 of tubular membrane 4 is filtered, by the filtered waste water of filtering trough 7
Enter desulfurization wastewater zero-emission system after RO process；
The desulfurization wastewater zero-emission system includes and the multiple-effect separator 11 that is connected after RO process, the tubular membrane
4 bottoms are provided with sludge dewatering system.
The desulfurization wastewater zero-emission system includes the flue gas heat-exchange unit 14 installed on desulfurizing tower gas approach, described
14 output end of flue gas heat-exchange unit is provided with the heater 12 for heating circulation fluid, and 12 output end of heater is connected with
The output end of multiple-effect separator 11,11 bottom of multiple-effect separator is connected with heater 12, and the waste liquid of 11 bottom of multiple-effect separator is defeated
It is provided with dewaterer 13 in outlet, dehydrated mouth is provided on dewaterer 13, air-returen flue heat exchanger VI is provided on heater 12, it is described
Multiple-effect separator 11 at the top of be provided with the condensed water opening of discharge condensation water recycling, be provided on the multiple-effect separator 11 and be used for
The opening of Absorption Desulfurization waste water IX, the flue gas heat-exchange unit 14 are provided with for absorbing hot fume VII and discharge hot fume
The opening of VIII.
First reactive tank 1 and the second reactive tank 2 is internally provided with mechanical stirring device and pH monitoring device.
The thickener 3 is delivered to tubular membrane 4 by circulating pump.
The sludge dewatering system includes the sludge storage tank 5 for being connected to 4 bottom of tubular membrane, and the sludge storage tank 5 is pressed
Filter 6 is connected to the first reactive tank 1.
6 bottom of filter press is provided with mud cake and collects II.
The RO technology processing system includes that logical level-one RO system 8, concentrated water RO system are sequentially connected with filtering trough 7
System 9 and DTRO system 10, the outlet end of the concentrated water RO system 9 is separately connected desulfurization wastewater zero-emission system, reuse water system
IV and flushing cinder system III.
Utility model works principle:
1) chemical wastewater abatement system will recycle after the high-quality classification of waste of low saline salinity in chemical wastewater, between reaching
It connects and reduces waste water displacement；
Waste water I flows into the first reactive tank 1, and NaOH and Na is added in the first reactive tank 12CO3, pH coarse adjustment is carried out, is formed
The sediment of calcium carbonate and magnesium hydroxide, while magnesium hydroxide carries silica and forms co-precipitation, then waste water flows into second
Reactive tank 2 continues supplement addition medicament, carries out accurate adjustment to pH, so that reaction is more complete, two-stage reaction slot carries out machinery respectively
Stirring and pH monitoring, the water (suspended solid generated containing reaction) after reaction overflows in thickener 3, defeated with circulating pump
It is sent to tubular membrane 4 to be separated by solid-liquid separation, the water of big flow recycles between Waste water concentrating slot 3 and tubular membrane 4 at this time, and penetrates pipe
The water (water for being equal to input) of formula film 4 is then sent to 7 short of filtering trough, using pH readjustment to part after neutrality as
The water inlet of advanced treatment system is done in further multi-stage PCE and DTRO 10 in level-one RO 8 and concentrated water RO 9 and DTRO 10
Desalting processing；
Meanwhile tubular membrane 4 also generates a certain amount of concentrate (sludge), needs to be sent to sludge dewatering system, by sheet frame
The II that entrusts after filter press 6 is dehydrated, outside dehydrated sludge cake is handled or is directly filled, and desliming water then flows back into system front end 1 and handles again；
2) the remaining strong brine of chemical wastewater abatement system enters desulfurization wastewater zero-emission system；
3) desulfurization wastewater zero-emission system
On desulfurizing tower gas approach, flue gas heat-exchange unit 14 is installed, hot fume VII in desulfurizing tower gas approach is utilized
Heat heats up heat transferring medium in it, then heats circulation fluid by heater 12 by thermal medium and enter desulfurization wastewater multiple-effect point
From device 11, heat source is provided for desulfurization wastewater zero discharge treatment；
The desulfurization waste liquor after desalting processing in DTRO 10 is passed through into multiple-effect separator from crystallization technique using multi-effect flashing steam
11 (complete multiple-effect evaporation crystallization process), the waste liquid in multiple-effect separator 11 are transported to former desulphurization system vacuum belt dewaterer
13 carry out dehydration V, and crystallization raffinate transports multiple-effect separator 11 back by heater 12 and continues cycling through use；
The steam that the final evaporation of multiple-effect separator 11 generates can by condenser by steam condensation at water reuse X.
Air-returen flue heat exchanger VI is provided on the heater 12, the delivery outlet of flue gas heat-exchange unit 14 is provided with hot fume
The outlet VIII.
Claims (7)
1. a kind of full factory's wastewater discharge device in coal-burning power plant, which is characterized in that including chemical wastewater abatement system and desulfurization wastewater
Zero-emission system；
The chemical wastewater abatement system include for wastewater pH carry out coarse adjustment the first reactive tank (1), described first
The input terminal of second reactive tank (2) of the waste water output end connection of reactive tank (1) for carrying out accurate adjustment to wastewater pH, described the
The input terminal of fluid output port connection thickener (3) of two reactive tanks (2), the thickener (3) output end connect tubular membrane
(4) input terminal is separated by solid-liquid separation, and fluid output port connection filtering trough (7) of tubular membrane (4) is filtered, by filtering
Sink (7) filtered waste water enters desulfurization wastewater zero-emission system after RO process；
The desulfurization wastewater zero-emission system includes be connected with after RO process multiple-effect separator (11), the tubular membrane
(4) bottom is provided with sludge dewatering system.
2. the full factory's wastewater discharge device in a kind of coal-burning power plant according to claim 1, which is characterized in that the desulfurization is useless
Water zero-emission system includes the flue gas heat-exchange unit (14) installed on desulfurizing tower gas approach, the flue gas heat-exchange unit (14) output
End is provided with the heater (12) for heating circulation fluid, and the heater (12) output end is connected with multiple-effect separator
(11), the output end of multiple-effect separator (11) bottom is connected with heater (12), the waste liquid output of multiple-effect separator (11) bottom
It is provided on end dewaterer (13), dehydrated mouth is provided on dewaterer (13), air-returen flue heat exchanger (VI) is provided on heater (12),
The condensed water that discharge condensation water recycling is provided at the top of the multiple-effect separator (11) is open, on the multiple-effect separator (11)
It is provided with the opening for Absorption Desulfurization waste water (IX), the flue gas heat-exchange unit (14) is provided with for absorbing hot fume (VII)
With the opening of discharge hot fume (VIII).
3. the full factory's wastewater discharge device in a kind of coal-burning power plant according to claim 1, which is characterized in that described first is anti-
Slot (1) and the second reactive tank (2) is answered to be internally provided with mechanical stirring device and pH monitoring device.
4. the full factory's wastewater discharge device in a kind of coal-burning power plant according to claim 1, which is characterized in that the thickener
(3) tubular membrane (4) are delivered to by circulating pump.
5. the full factory's wastewater discharge device in a kind of coal-burning power plant according to claim 1, which is characterized in that the sludge is de-
Water system includes the sludge storage tank (5) for being connected to tubular membrane (4) bottom, sludge storage tank (5) filter press (6) connection first
Reactive tank (1).
6. the full factory's wastewater discharge device in a kind of coal-burning power plant according to claim 5, which is characterized in that the filter press
(6) bottom is provided with mud cake and collects (II).
7. the full factory's wastewater discharge device in a kind of coal-burning power plant according to claim 1, which is characterized in that the RO technique
Processing includes that logical level-one RO system (8), concentrated water RO system (9) and DTRO system (10), institute are sequentially connected with filtering trough (7)
The outlet end for the concentrated water RO system (9) stated is separately connected desulfurization wastewater zero-emission system, reuse water system (IV) and flushing cinder system
(III)。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820932717.3U CN208883643U (en) | 2018-06-15 | 2018-06-15 | A kind of full factory's wastewater discharge device in coal-burning power plant |
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| CN201820932717.3U CN208883643U (en) | 2018-06-15 | 2018-06-15 | A kind of full factory's wastewater discharge device in coal-burning power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516648A (en) * | 2018-06-15 | 2018-09-11 | 王佳宁 | A kind of full factory's waste water drainage system in coal-burning power plant |
| CN108658355A (en) * | 2018-06-15 | 2018-10-16 | 王佳宁 | A kind of full factory's waste water drainage system in coal-burning power plant and its application method |
-
2018
- 2018-06-15 CN CN201820932717.3U patent/CN208883643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108516648A (en) * | 2018-06-15 | 2018-09-11 | 王佳宁 | A kind of full factory's waste water drainage system in coal-burning power plant |
| CN108658355A (en) * | 2018-06-15 | 2018-10-16 | 王佳宁 | A kind of full factory's waste water drainage system in coal-burning power plant and its application method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20210615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |