CN108218007A - A kind of urban life Treated sewage reusing is in the method for integrated iron and steel works - Google Patents
A kind of urban life Treated sewage reusing is in the method for integrated iron and steel works Download PDFInfo
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- CN108218007A CN108218007A CN201810147763.7A CN201810147763A CN108218007A CN 108218007 A CN108218007 A CN 108218007A CN 201810147763 A CN201810147763 A CN 201810147763A CN 108218007 A CN108218007 A CN 108218007A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
Abstract
The present invention relates to a kind of urban life Treated sewage reusing in the method for integrated iron and steel works, include the following steps：1) it measures water in certain municipal sewage plant urban life and meets reuse standard；2) denitrogenation processing is carried out to municipal middle water, the municipal middle water after denitrogenation directly gets to the new water tank of iron and steel enterprise, and municipal sewage plant processing front end is transported to using the pretreatment water outlet of sewage treatment plant of iron and steel enterprise as displacement water；3) water enters iron and steel enterprise's advanced treatment system and is handled in the urban life of displacement；4) the middle water water replaced according to how much settings of certain iron and steel enterprise's underground water water consumption.Advantage is：Preferable water-saving and emission-reducing effect is achieved, not only solves that iron and steel enterprise circulation salt content is high, problem of fluctuation of service, also reduces new water magnitude of recruitment and efflux wastewater amount.
Description
Technical field
The present invention relates to a kind of urban life Treated sewage reusing in the method for integrated iron and steel works.
Background technology
At present, water scarcity crisis has become the great resource that numerous countries are faced in policy, economic and technical
Environmental problem, water resources crisis is more and more severeer, and prospect is troubling.The approach for solving shortage of water resources predicament is mainly increased income
With two kinds of throttling, throttling is exactly to improve the measures such as production technology and carry out using water wisely using taking, and increase income be exactly searching can be at certain
A little aspects substitute the water source of water function.Water has big amount, water stabilization, the spy not influenced by factors such as seasons in urban life
Point is reliable Ecology.These sewage resources pass through suitable regeneration treatment, are back to the use not high to water quality requirement
Family can not only reduce the consumption of fresh water resource and the discharge capacity of sewage, and can save production cost and environmental protection,
It can reach resource environment two-win.
Industrial water is urban water rich and influential family, and steel and iron industry is water consumption and blowdown rich and influential family in industrial circle, is consumed
Water accounts for about the 14% of national industrial water consume,《The 12nd five-year-plan outline of national economy and social development》Regulation, unit
Industrial added value water consumption needs reduction by 30%, while Ministry of Water Resources represents a few days ago, " from now on it is possible that key area with water rich and influential family
Water total amount control is carried out, after target water use, newly-increased water can only pass through water right definition and the non-traditional water source of use
Meet ", therefore, the replacement water source for finding industrial fresh water is extremely urgent.
Iron and steel enterprise's water about more than 80% be cooling water, by type of cooling difference be divided into net circulation cooling water system and
Turbid recirculating cooling water system.There are two types of forms for net circulation cooling water system：Enclosed Type Circulating Cooling Water System and open type cycle
The net ring cooling water system of cooling water system, wherein open type be using a kind of most wide mode, be present in coking, oxygen processed, sintering,
Each process such as blast furnace, steel-making, steel rolling and thermoelectricity.After Reusability, water temperature constantly increases recirculated water, various ions in water
Concentration increases, high power concentration, while can generate a series of physical chemical change, causes pipe-line system corrosion and scaling serious, influences
Equipment normal operation.
Its scaling cause is analyzed, mainly due to the raising of water temperature, the hardness such as calcium carbonate, magnesium carbonate in recirculated cooling water
Salt, solubility are reduced with the raising of temperature, water temperature more higher easier precipitation, while molecule activity is also with temperature
Rising it is all the more active, the attachment speed of incrustation scale is also higher.It is followed in conclusion must be added to industrial fresh water (purified water) to reduce
Ring water salt content, avoids pipeline heavy corrosion, it is ensured that system normal operation.Industrial fresh water (purified water) group that Anshan iron and steel plant adds at present
Into predominantly three parts：Underground water, Dahuofang water inlet and advanced treatment system water inlet, considerably increase ton steel and consume new water, no
The system cycles of concentration of rule also increases quantity of wastewater effluent, not only uneconomical but also not environmentally, therefore, finds and substitutes water source, be to follow
The water-saving effective way of ring water system.
Invention content
In order to overcome the deficiencies of the prior art, combine the object of the present invention is to provide a kind of urban life Treated sewage reusing in steel
Water in urban life and steel and iron industry purified water are replaced, integrated iron and steel works' circulation are made to reach stable operation by enterprise
State, optimize circulation.
To achieve the above object, the invention is realized by the following technical scheme：
A kind of urban life Treated sewage reusing includes the following steps in the method for integrated iron and steel works：
1) it measures water in certain municipal sewage plant urban life and meets reuse standard：pH：6-7、COD<50mg/L, ammonia nitrogen
<2mg/L, nitrate nitrogen<70mg/L, total nitrogen<70mg/L, conductivity<1500us/cm；
2) denitrogenation processing being carried out to municipal middle water, the municipal middle water after denitrogenation directly gets to the new water tank of iron and steel enterprise,
Improve the water quality of new water system with this, municipal wastewater is transported to using the pretreatment water outlet of sewage treatment plant of iron and steel enterprise as displacement water
Treatment plant handles front end, qualified discharge after processing；
3) water enters iron and steel enterprise's advanced treatment system and is handled in the urban life of displacement, the initialization system reaction time
0.5-1h, regulating system pH value 7-8；Advanced treatment system is handled using " ultrafiltration+reverse osmosis " bimodulus method, in ultrafiltration system use
The full filtration Ultrafiltration film of pressure type, more than the 90% ultrafiltration system rate of recovery, reverse osmosis more than 75% rate of recovery are discharged COD after processing<
50mg/L, total nitrogen<10mg/L；
4) the middle water water replaced according to how much settings of certain iron and steel enterprise's underground water water consumption, underground water water consumption is with putting
The difference of middle water water changed is within 500t/h, to achieve the purpose that reduce to mining of groundwater.
Compared with prior art, the beneficial effects of the invention are as follows：
Urban life Treated sewage reusing achieves preferable water-saving and emission-reducing effect, not only solves in the method for integrated iron and steel works
Jue Liao iron and steel enterprises circulation salt content is high, the problem of fluctuation of service, also reduces new water magnitude of recruitment and efflux wastewater
Amount makes iron and steel enterprise's entirety ton steel consume new water and progressively reaches international most advanced level, while protect groundwater source, improves steel
Production, life and the surrounding enviroment of integrated complex.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Fig. 2 is advanced treating flow chart.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings of the specification, it should be noted that the implementation of the present invention is unlimited
In following embodiment.
See Fig. 1, a kind of urban life Treated sewage reusing includes the following steps in the method for integrated iron and steel works：
1) it measures water in certain municipal sewage plant urban life and meets reuse standard：pH：6-7、COD<50mg/L, ammonia nitrogen
<2mg/L, nitrate nitrogen<70mg/L, total nitrogen<70mg/L, conductivity<1500us/cm；
2) denitrogenation processing being carried out to municipal middle water, the municipal middle water after denitrogenation directly gets to the new water tank of steel plant, with
This improves the water quality of new water system, and municipal dirt is transported to using the pretreatment water outlet of sewage treatment plant of integrated iron and steel works as displacement water
Water treatment plant handles front end, qualified discharge after processing；
3) see Fig. 2, certain integrated iron and steel works' advanced treatment system is handled using " ultrafiltration+reverse osmosis " bimodulus method, ultrafiltration system
System is gone out using the full filtration Ultrafiltration film of inner pressed, more than the 90% ultrafiltration system rate of recovery, reverse osmosis more than 75% rate of recovery after processing
Water COD<50mg/L, total nitrogen<10mg/L；Water enters iron and steel enterprise's advanced treatment system and is handled in the urban life of displacement,
Initialization system reaction time 0.5-1h, regulating system pH value 7-8；
4) the middle water water replaced according to how much settings of certain iron and steel enterprise's underground water water consumption, underground water water consumption is with putting
The difference of middle water water changed is within 500t/h, to achieve the purpose that reduce to mining of groundwater.
Embodiment 1：
Urban life Treated sewage reusing is in the method for integrated iron and steel works：
See Fig. 1, carry out investigation comprehensively to certain municipal sewage plant, show that big, water quality is steady with measuring for water in urban life
Fixed, the characteristics of not influenced by factors such as seasons, water water quality in measure：PH, COD, ammonia nitrogen, nitrate nitrogen, total nitrogen and conductivity, detection
The conductivity of middle water is in the range of 1000 ± 20us/cm.And measure the electricity being discharged after certain integrated iron and steel works' Sewage advanced treatment
Conductance illustrates that two kinds of water has the basis of displacement in 2000 ± 20us/cm ranges, can be into line replacement.Certain wastewater of steel industry
9300t/h, after grid, the pretreatment of materialization stage, 1500t/h enters municipal sewage plant processing front end and is handled,
6900t/h supplies clean circulating water system, and remaining water enters advanced treatment system with water in the 1500t/h of displacement and carries out depth together
Reason is shown in Fig. 2, reaction time 0.5h, and regulating system pH value is 7, and water outlet is drained into industrial fresh water tank as industrial fresh water and treats
With.Clean circulating water water stabilization after displacement has achieved the purpose that the new water magnitude of recruitment of reduction and efflux wastewater amount.
Embodiment 2
Urban life Treated sewage reusing is as follows in the method for integrated iron and steel works：
See Fig. 1, carry out investigation comprehensively to certain municipal sewage plant, show that big, water quality is steady with measuring for water in urban life
Fixed, the characteristics of not influenced by factors such as seasons, water water quality in measure：PH, COD, ammonia nitrogen, nitrate nitrogen, total nitrogen and conductivity, detection
The conductivity of middle water measures the electricity being discharged after certain integrated iron and steel works' Sewage advanced treatment in the range of 1000 ± 20us/cm
Conductance illustrates that two kinds of water has the basis of displacement in 2000 ± 20us/cm ranges, can be into line replacement.Certain wastewater of steel industry
After grid, the pretreatment of materialization stage, 2000t/h enters municipal sewage plant processing front end and is handled 8300t/h,
5900t/h supplies clean circulating water system, and remaining water enters advanced treatment system with water in the 2000t/h of displacement and carries out depth together
Reason, reaction time 1h, regulating system pH value are 7, and it is for use that water outlet as industrial fresh water is drained into tank.Clean circulating water water after displacement
Matter is stablized, and has achieved the purpose that the new water magnitude of recruitment of reduction and efflux wastewater amount.
Embodiment 3
Urban life Treated sewage reusing is as follows in the method for integrated iron and steel works：
See Fig. 1, carry out investigation comprehensively to certain municipal sewage plant, show that big, water quality is steady with measuring for water in urban life
Fixed, the characteristics of not influenced by factors such as seasons, water water quality in measure：PH, COD, ammonia nitrogen, nitrate nitrogen, total nitrogen and conductivity, detection
The conductivity of middle water measures the electricity being discharged after certain integrated iron and steel works' Sewage advanced treatment in the range of 1000 ± 20us/cm
Conductance illustrates that two kinds of water has the basis of displacement in 2000 ± 20us/cm ranges, can be into line replacement.Certain wastewater of steel industry
After grid, the pretreatment of materialization stage, 2500t/h enters municipal sewage plant processing front end and is handled 9600t/h,
6000t/h supplies clean circulating water system, and remaining water enters advanced treatment system with water in the 2500t/h of displacement and carries out depth together
Reason, reaction time 1h, regulating system pH value are 8, and it is for use that water outlet as industrial fresh water is drained into tank.Clean circulating water water after displacement
Matter is stablized, and has achieved the purpose that the new water magnitude of recruitment of reduction and efflux wastewater amount.
The results are shown in Table 1 for industrial fresh water water quality detection before and after middle water and displacement, the results showed that, displacement ratio is different,
Postindustrial new water water quality difference is replaced, i.e.,：When replaced water (1500-2500t/h) is bigger, clean circulating water water quality detection result
It is better, but accordingly increased nitrogen content.Consider, the conductivity 980-1020us/cm of water in urban life, and certain steel
The conductivity 1980-2020us/cm being discharged after iron integrated complex Sewage advanced treatment, therefore, to ensure relatively low conductivity
Postindustrial new water nitrogen content is replaced in 1000-1500us/cm or so and reduction, determines that effect is best when replaced water is 2000t/h,
I.e. embodiment 2 is optimum embodiment, and this method effectively improves the water quality of the new water system of certain integrated iron and steel works, reduces
The conductivity of industrial fresh water.
1 each embodiment water quality detection result of table
Urban life Treated sewage reusing achieves preferable water-saving and emission-reducing effect, not only solves in the method for integrated iron and steel works
Jue Liao iron and steel enterprises circulation salt content is high, the problem of fluctuation of service, also reduces new water magnitude of recruitment and efflux wastewater
Amount makes iron and steel enterprise's entirety ton steel consume new water and progressively reaches international most advanced level, while protect groundwater source, improves steel
Production, life and the surrounding enviroment of integrated complex.
Claims (1)
1. a kind of urban life Treated sewage reusing is in the method for integrated iron and steel works, which is characterized in that includes the following steps：
1) it measures water in certain municipal sewage plant urban life and meets reuse standard：pH：6-7、COD<50mg/L, ammonia nitrogen<
2mg/L, nitrate nitrogen<70mg/L, total nitrogen<70mg/L, conductivity<1500us/cm；
2) denitrogenation processing is carried out to municipal middle water, the municipal middle water after denitrogenation directly gets to the new water tank of iron and steel enterprise, with this
Improve the water quality of new water system, municipal wastewater processing is transported to using the pretreatment water outlet of sewage treatment plant of iron and steel enterprise as displacement water
Factory and office manage front end, qualified discharge after processing；
3) water enters iron and steel enterprise's advanced treatment system and is handled in the urban life of displacement, initialization system reaction time 0.5-
1h, regulating system pH value 7-8；Advanced treatment system is handled using " ultrafiltration+reverse osmosis " bimodulus method, and ultrafiltration system uses inner pressed
Full filtration Ultrafiltration film, more than the 90% ultrafiltration system rate of recovery, reverse osmosis more than 75% rate of recovery are discharged COD after processing<50mg/
L, total nitrogen<10mg/L；
4) the middle water water replaced according to how much settings of certain iron and steel enterprise's underground water water consumption, underground water water consumption and displacement
The difference of middle water water is within 500t/h, to achieve the purpose that reduce to mining of groundwater.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147763.7A CN108218007A (en) | 2018-02-13 | 2018-02-13 | A kind of urban life Treated sewage reusing is in the method for integrated iron and steel works |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147763.7A CN108218007A (en) | 2018-02-13 | 2018-02-13 | A kind of urban life Treated sewage reusing is in the method for integrated iron and steel works |
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| CN108218007A true CN108218007A (en) | 2018-06-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206020A (en) * | 2011-05-03 | 2011-10-05 | 中冶赛迪工程技术股份有限公司 | Zero-emission comprehensive treatment process and system for waste water from whole plant of steelmaking enterprise |
| CN203529959U (en) * | 2013-08-13 | 2014-04-09 | 陕西钢铁集团有限公司 | Separate-quality cascade water replenishment and drainage and circulating water conservation system of iron and steel enterprise |
| CN203700070U (en) * | 2013-12-11 | 2014-07-09 | 北京志能祥赢节能环保科技有限公司 | Device for mixing and recycling steel waste water and municipal sewage |
| CN105271623A (en) * | 2015-11-26 | 2016-01-27 | 东北大学 | System and process for recycling urban recycled water and steel wastewater in iron and steel enterprises through combined grading |
| CN205241450U (en) * | 2015-11-26 | 2016-05-18 | 东北大学 | City normal water and steel wastewater be retrieval and utilization in system of iron and steel enterprise in grades jointly |
| CN106745966A (en) * | 2016-12-01 | 2017-05-31 | 江苏蓝天环保集团股份有限公司 | A kind of steel wastewater and the device of municipal wastewater mixed regeneration reuse |
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2018
- 2018-02-13 CN CN201810147763.7A patent/CN108218007A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206020A (en) * | 2011-05-03 | 2011-10-05 | 中冶赛迪工程技术股份有限公司 | Zero-emission comprehensive treatment process and system for waste water from whole plant of steelmaking enterprise |
| CN203529959U (en) * | 2013-08-13 | 2014-04-09 | 陕西钢铁集团有限公司 | Separate-quality cascade water replenishment and drainage and circulating water conservation system of iron and steel enterprise |
| CN203700070U (en) * | 2013-12-11 | 2014-07-09 | 北京志能祥赢节能环保科技有限公司 | Device for mixing and recycling steel waste water and municipal sewage |
| CN105271623A (en) * | 2015-11-26 | 2016-01-27 | 东北大学 | System and process for recycling urban recycled water and steel wastewater in iron and steel enterprises through combined grading |
| CN205241450U (en) * | 2015-11-26 | 2016-05-18 | 东北大学 | City normal water and steel wastewater be retrieval and utilization in system of iron and steel enterprise in grades jointly |
| CN106745966A (en) * | 2016-12-01 | 2017-05-31 | 江苏蓝天环保集团股份有限公司 | A kind of steel wastewater and the device of municipal wastewater mixed regeneration reuse |
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| 邓平: "利用市政再生水降低钢铁企业新水消耗", 《工业水处理》 * |
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Application publication date: 20180629 |
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