CN104876385A - Treatment system for application of deep-treated urban sewage in large-scale thermal power plant chemical make-up water - Google Patents
Treatment system for application of deep-treated urban sewage in large-scale thermal power plant chemical make-up water Download PDFInfo
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- CN104876385A CN104876385A CN201410069815.5A CN201410069815A CN104876385A CN 104876385 A CN104876385 A CN 104876385A CN 201410069815 A CN201410069815 A CN 201410069815A CN 104876385 A CN104876385 A CN 104876385A
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Abstract
The present invention relates to a set of a treatment system for application of deep-treated urban sewage in large-scale thermal power plant chemical make-up water, wherein the system comprises an adjusting pool (1), an aeration biological filtration pool (2), a mechanical stirring clarifying pool (3), an efficient fiber filtration pool (4), an intermediate water box (5), a full-automatic filtration device (6), an ultra-filtration device (7), an ultra-filtration water box (8), a reverse osmosis device (9), and other units, and can effectively remove organic impurities, suspended impurities and dissolved impurities in sewage, wherein the effluent of the system meets the water quality requirement of the chemical make-up water of the generating set with more than or equal to 600 MW.
Description
Technical field
The present invention is technical field of sewage, specifically after city sewage deep treatment for the treatment system of large-size thermal power plant chemical feed water.
Background technology
According to statistics, in China more than 600 city, there is insufficient water in more than 400 city, wherein 110 city serious water shortages.While lack of water, urban wastewater discharge is but growing on and on.Domestic and international research shows, by reuse after city sewage deep treatment, is one of important channel alleviating shortage of water resources.
At present, China's year quantity of wastewater effluent is about more than 400 hundred million tons, year water deficit about 6,000,000,000 tons.Expect the year two thousand thirty, the whole nation reusing sewage rate must reach 30%, year reused sewage reach 12,000,000,000 tons, when the time comes, substantially can alleviate the situation of China's shortage of water resources.By urban sewage recycling in Water Recharge in Thermal Power Plant, can shortage of water resources be alleviated, realize sewage recycling, reduce environmental hazard, there is good environmental benefit and economic benefit.
Biological process and physico-chemical processes combine by native system, have stronger removal effect to the organic impurity in sewage, suspended impurity and dissolved impurity, and effluent quality reaches more than 600MW generating set and not feed water index.
Summary of the invention
For the treatment system of large-size thermal power plant chemical feed water after city sewage deep treatment, the system described in it is made up of 9 processing units: be respectively equalizing tank (1), BAF (2), accelerator (3), high-efficiency fibre filter (4), intermediate water tank (5), automatic filtering apparatus (6), ultra-filtration equipment (7), ultrafiltration water tank (8) and reverse osmosis unit (9).
For the treatment system of large-size thermal power plant chemical feed water after above-mentioned a kind of city sewage deep treatment, the equalizing tank described in it can single or one group of parallel running, mainly plays and cushions and regulating water quality effect.
For the treatment system of large-size thermal power plant chemical feed water after above-mentioned a kind of city sewage deep treatment, the BAF described in it can single or one group of parallel running, and effluent of aeration biological filter ammonia nitrogen can be down to about 5mg/L.COD is down to about 60mg/L, BOD5 and is down to about 5mg/L.
Above-mentioned a kind of municipal effluent is used for large-size thermal power plant chemical feed water treatment system, can take the work of more than 2 groups female pipe branch pipe types through accelerator, and after process, turbidity can be down to about below 5mg/L.
For the treatment system of large-size thermal power plant chemical feed water after above-mentioned a kind of city sewage deep treatment, the high-efficiency fibre filter described in it can single or one group of parallel running, goes out water suspension and can be less than 1mg/L once.
For the treatment system of large-size thermal power plant chemical feed water after above-mentioned a kind of city sewage deep treatment, the automatic filtering apparatus described in it can single or one group of parallel running, can remove the granule foreign that in water, particle diameter is greater than 2 μm.
For the treatment system of large-size thermal power plant chemical feed water after above-mentioned a kind of city sewage deep treatment, but one or more groups parallel running of ultra-filtration equipment described in it, the granule foreign that in water, particle diameter is greater than 0.01 μm can be removed.
For the treatment system of large-size thermal power plant chemical feed water after above-mentioned a kind of city sewage deep treatment, reverse osmosis unit (RO) described in it but one or more groups parallel running, dissolved salts and the molecular weight organism that is greater than 100 of in water 98% can be removed.
Controlling System can carry out centralized watch at central station of floating dock to whole process system, automatic sequence controls and operational management, realizes unattended on the spot.Electronics arranges a local operation person station between controlling on the spot, for debugging, maintenance and tour.Central station of floating dock arranges unified operation person station.
Controlling System adopts the Controlling System be made up of programmable logic controller (PLC) to monitor controlled plants all in whole process system, comprise open, stop control, equipment state and main technologic parameters monitor, the interlock protection of finishing equipment and a distant place for device control/switch on the spot; Controlling System has the ability of two-way data communication, carries out real-time communication with water subcontrol net, and operations staff can by water subcontrol net operation person station, realize remote centralized control, when device or Controlling System break down, can show in operator station, and send guard signal.
The present invention compared with prior art has outstanding substantive distinguishing features and significant progressive and positive effect:
(1) municipal effluent water enters equalizing tank through excess pressure, equalizing tank plays the effect of buffering water quality and quantity, equalizing tank water outlet enters BAF through reserving for one's own use, BAF has removes SS, chemical oxygen demand (COD), BOD, nitrated, denitrogenation, dephosphorization, removal AOX(objectionable impurities) effect, be characterized in integrating bio-oxidation and retaining suspended solids, save post precipitation pond (second pond).System effluent index controls: ammonia nitrogen 5mg/L, COD is about 60mg/L, BOD5 is down to 5mg/L, effluent of aeration biological filter gravity flow enters accelerator, this device mainly utilizes machinery water extraction is risen and stirs, impel sludge circulation, and make solid impurity and established body refuse contact flocculation in water and precipitation separation.The major control of this device index goes out water suspension at below 5mg/L.
(2) accelerator water outlet gravity flow enters high-efficiency fibre filter, and this device mainly adopts novel fibrous bundle wadding as filter element, replaces the new technology of conventional quartz sand filter.This device effluent index controls turbidity at 2NTU, and high-efficiency fibre filter water outlet enters intermediate water tank, then is promoted to full-automatic filter by lift pump.
(3) automatic filter is that a kind of filter screen that utilizes directly tackles impurity in water, removes water body recovery technology, particulate matter, reduces turbidity, purify water, reduce the generations such as system dirt, bacterium algae, corrosion, to purify water and to protect the normal work of follow-up equipment.This device controls effluent index SDI≤3, and full-automatic filter water outlet enters ultra-filtration equipment.
(4) ultra-filtration equipment is a kind of is separation principle with screening, and take pressure as the membrane separating process of impellent, filtering accuracy, within the scope of 0.005-0.01 μm, effectively can remove the particulate in water, colloid, bacterium, thermal source and macromolecule organic matter.This device water outlet major control index turbidity is less than 0.05NTU.
(5) ultra-filtration water enters ultrafiltration water tank, and the water outlet of ultrafiltration water tank enters reverse osmosis unit through topping-up pump, and this device removes charged ion in water, inorganics, colloidal particle, bacterium and organic substance etc. effectively.Be the best equipment in preparation of high-purity water, brackish water desalination and waste water treatment process, this device controls in effluent index ratio of desalinization 98%.
Accompanying drawing explanation
Fig. 1 is the setting drawing of patent of the present invention.
For the treatment system of large-size thermal power plant chemical feed water after city sewage deep treatment, the system described in it is made up of 9 processing units: be respectively equalizing tank (1), BAF (2), accelerator (3), high-efficiency fibre filter (4), intermediate water tank (5), automatic filtering apparatus (6), ultra-filtration equipment (7), ultrafiltration water tank (8) and reverse osmosis unit (9).
Implement concrete mode
Below in conjunction with accompanying drawing, by embodiment, the present invention is described further.
Embodiment
As seen from Figure 1, the present invention is that a kind of municipal effluent is for large-size thermal power plant chemical feed water treatment system.For the treatment system of large-size thermal power plant chemical feed water after city sewage deep treatment, the system described in it is made up of 9 processing units: be respectively equalizing tank (1), BAF (2), accelerator (3), high-efficiency fibre filter (4), intermediate water tank (5), automatic filtering apparatus (6), ultra-filtration equipment (7), ultrafiltration water tank (8) and reverse osmosis unit (9).Municipal effluent water enters equalizing tank through excess pressure, equalizing tank plays the effect of buffering water quality and quantity, equalizing tank water outlet enters BAF through reserving for one's own use, BAF has removes SS, chemical oxygen demand (COD), BOD, nitrated, denitrogenation, dephosphorization, removal AOX(objectionable impurities) effect, be characterized in integrating bio-oxidation and retaining suspended solids, save post precipitation pond (second pond).System effluent index controls: ammonia nitrogen 5mg/L, and COD is about 60mg/L, BOD
5be down to 5mg/L, effluent of aeration biological filter gravity flow enters accelerator, and this device mainly utilizes machinery water extraction is risen and stirs, and impels sludge circulation, and makes solid impurity and established body refuse contact flocculation in water and precipitation separation.The major control of this device index goes out water suspension at below 5mg/L, and accelerator water outlet gravity flow enters high-efficiency fibre filter, and this device mainly adopts novel fibrous bundle wadding as filter element, replaces the new technology of conventional quartz sand filter.This device effluent index controls turbidity at 2NTU; high-efficiency fibre filter water outlet enters intermediate water tank; full-automatic filter is promoted to again by lift pump; this device is that a kind of filter screen that utilizes directly tackles impurity in water; remove water body recovery technology, particulate matter, reduce turbidity, purify water; the generations such as minimizing system dirt, bacterium algae, corrosion, to purify water and to protect the normal work of follow-up equipment.This device controls effluent index SDI≤3, full-automatic filter water outlet enters ultra-filtration equipment, this device is a kind of is separation principle with screening, take pressure as the membrane separating process of impellent, filtering accuracy, within the scope of 0.005-0.01 μm, effectively can remove the particulate in water, colloid, bacterium, thermal source and macromolecule organic matter.This device water outlet major control index turbidity is less than 0.05NTU.Ultra-filtration water enters ultrafiltration water tank, and the water outlet of ultrafiltration water tank enters reverse osmosis unit through topping-up pump, and this device removes charged ion in water, inorganics, colloidal particle, bacterium and organic substance etc. effectively.Be the best equipment in preparation of high-purity water, brackish water desalination and waste water treatment process, this device controls in effluent index ratio of desalinization 98%.
Controlling System can carry out centralized watch at central station of floating dock to whole process system, automatic sequence controls and operational management, realizes unattended on the spot.Electronics arranges a local operation person station between controlling on the spot, for debugging, maintenance and tour.Central station of floating dock arranges unified operation person station.Controlling System adopts the Controlling System be made up of programmable logic controller (PLC) to monitor controlled plants all in whole process system, comprise open, stop control, equipment state and main technologic parameters monitor, the interlock protection of finishing equipment and a distant place for device control/switch on the spot; Controlling System has the ability of two-way data communication, carries out real-time communication with water subcontrol net, and operations staff can by water subcontrol net operation person station, realize remote centralized control, when device or Controlling System break down, can show in operator station, and send guard signal.
Claims (8)
1. after city sewage deep treatment for a treatment system for large-size thermal power plant chemical feed water, the system described in it is made up of 9 processing units: be respectively equalizing tank (1), BAF (2), accelerator (3), high-efficiency fibre filter (4), intermediate water tank (5), automatic filtering apparatus (6), ultra-filtration equipment (7), ultrafiltration water tank (8) and reverse osmosis unit (9).
2. after a kind of city sewage deep treatment according to claim 1 for the treatment system of large-size thermal power plant chemical feed water, the equalizing tank described in it can single or one group of parallel running, mainly plays and cushions and regulating water quality effect.
3. after a kind of city sewage deep treatment according to claim 1 for the treatment system of large-size thermal power plant chemical feed water, BAF described in it can single or one group of parallel running, effluent of aeration biological filter ammonia nitrogen can be down to about 5mg/L, COD is down to about 60mg/L, BOD5 and is down to about 5mg/L.
4. after a kind of city sewage deep treatment according to claim 1 for the treatment system of large-size thermal power plant chemical feed water, tool described in it stirs settling pond can single or one group of parallel running, goes out water suspension and can be down to about below 5mg/L.
5. after a kind of city sewage deep treatment according to claim 1 for the treatment system of large-size thermal power plant chemical feed water, the high-efficiency fibre filter described in it can single or one group of parallel running, goes out water suspension and can be less than 1mg/l once.
6. after a kind of city sewage deep treatment according to claim 1 for the treatment system of large-size thermal power plant chemical feed water, the automatic filtering apparatus described in it can single or one group of parallel running, can remove the granule foreign that in water, particle diameter is greater than 2 μm.
7. after a kind of city sewage deep treatment according to claim 1 for the treatment system of large-size thermal power plant chemical feed water, but one or more groups parallel running of ultra-filtration equipment described in it, the granule foreign that in water, particle diameter is greater than 0.01 μm can be removed.
8. after a kind of city sewage deep treatment according to claim 1 for the treatment system of large-size thermal power plant chemical feed water, reverse osmosis unit (RO) described in it but one or more groups parallel running, dissolved salts and the molecular weight organism that is greater than 100 of in water 98% can be removed.
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| CN201410069815.5A CN104876385A (en) | 2014-02-28 | 2014-02-28 | Treatment system for application of deep-treated urban sewage in large-scale thermal power plant chemical make-up water |
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| CN201410069815.5A CN104876385A (en) | 2014-02-28 | 2014-02-28 | Treatment system for application of deep-treated urban sewage in large-scale thermal power plant chemical make-up water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108033623A (en) * | 2017-12-15 | 2018-05-15 | 郑州艾莫弗信息技术有限公司 | A kind of environment protection sewage is aerated press filtration processing unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108033623A (en) * | 2017-12-15 | 2018-05-15 | 郑州艾莫弗信息技术有限公司 | A kind of environment protection sewage is aerated press filtration processing unit |
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