CN103030224A - Circulating water treatment method adopting deionized water as supplement water - Google Patents
Circulating water treatment method adopting deionized water as supplement water Download PDFInfo
- Publication number
- CN103030224A CN103030224A CN2011102921182A CN201110292118A CN103030224A CN 103030224 A CN103030224 A CN 103030224A CN 2011102921182 A CN2011102921182 A CN 2011102921182A CN 201110292118 A CN201110292118 A CN 201110292118A CN 103030224 A CN103030224 A CN 103030224A
- Authority
- CN
- China
- Prior art keywords
- water
- sodium
- treatment method
- circulating water
- water treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a circulating water treatment method adopting deionized water as supplement water. The method comprises a) controlling pH of circulating water at 9-11.5; b) adding an oxide-film type corrosion inhibitor, wherein the oxide-film type corrosion inhibitor is a mixture of two kinds of salts selected from tungstate, molybdate and d vanadate; and c) adding an environment-friendly type bactericide, the environment-friendly type bactericide is hydrogen peroxide and ozone. The inventive circulating water treatment method is suitable for treatment of a circulating cooling water system with sewage subjected to secondary treatment firstly and then to double membrane process so as to serve as supplement water, and can effectively control corrosion and microorganism growth.
Description
Technical field
The present invention relates to a kind of circulating water treatment method, relate in particular to a kind of circulating water treatment method of doing moisturizing with deionized water.
Background technology
As everyone knows, in industries such as petrochemical complex, thermal power generation, metallurgy, need to use large water gaging, wherein water coolant accounts for significant proportion, accounts for more than 80% of water of productive use such as petroleum chemical enterprise's water coolant water.Nowadays water resources shortage, water saving has become world theme.Sewage and Zhong Shui are back to recirculated water will greatly reduce the consumption of fresh water, even realize the spot patch fresh water.
The U.S. has realized discharging urban sewage recycling in the power generation cycle water system in the sixties in 20th century, and the nineties has realized qualified discharge Waste Water Reuse and petrochemical equipment circulating water system.The method of taking is that sewage is carried out advanced treatment, reduces COD, suspended substance and microorganism concn in the qualified discharge sewage, uses corrosion and scaling and the microorganism of water conditioner operating device again.
The method that sewage and Zhong Shui are back to recirculated water has two kinds.A kind of is advanced treatment, is about to sewage reuse after passing through again coagulation, precipitation, filtration, sterilization after the second-stage treatment.Another kind is two embrane methods, soon passes into ultrafiltration reverse osmosis device after the water process coagulation after the second-stage treatment, precipitation, the filtration, and water outlet is deionized water.Two embrane method investment costs are large, still, because there is not the fouling factor in the deionized water, be applied to circulating cooling make-up water, scale problems can be ignored, and therefore can greatly improve cycles of concentration, but also the expense of having saved Scale inhibitors, in addition can also extension device working life, save the overhaul of the equipments expense.As seen adopt deionized water can reduce the later stage expense.It is corrosion and microbiological manipulation that deionized water is done the problem that circulating cooling make-up water need to solve.
CN1338433A discloses in the sewage of qualified discharge and to have added sterilant and carry out disinfection, and adds alkaline matter and makes the pH value be controlled at 9.5-14 to carry out inhibition.Its shortcoming is: because have dissolved oxygen in the water, depend merely on adjusting pH value and can not effectively control corrosion.
CN1524806A discloses the water of high oily(waste)water after oil removal, sedimentation has been introduced circulating water system, simultaneously, adds inorganic base substance and makes the pH value reach 7-11, adds sterilant and corrosion inhibiting and descaling agent.Sterilant selects chlorine series bactericidal agent, the corrosion inhibiting and descaling agents such as clorox, trichloroisocyanuric acid to select organophosphorus, Sodium hexametaphosphate 99, Sodium orthomolybdate etc.Its shortcoming is: the chlorine series bactericidal agent can lose efficacy under alkaline condition, if the phosphorus containg substances such as organophosphorus, Sodium hexametaphosphate 99 are with sewage discharge meeting eutrophication.
CN1393411A has studied a kind of composite corrosion inhibitor for deionized water, and composition is comprised of deionized water, polyetheramides, silicate.Different from inhibiter composition of the present invention, and the present invention is the circulating water treatment method.
Summary of the invention
The object of the present invention is to provide a kind of deionized water to do the circulating water treatment method of moisturizing.
For reaching above purpose, the invention provides a kind ofly with the circulating water treatment method of deionized water as moisturizing, may further comprise the steps: a) the pH value of controlled circulation water is at 9-11.5; B) add the type oxide film inhibiter, described type oxide film inhibiter is the mixture that is selected from least two kinds of salt of tungstate, molybdate, vanadate; C) add the environment-friendly type sterilant, described environment-friendly type sterilant is hydrogen peroxide or ozone.
The present invention is preferably with the pH value of alkaline matter controlled circulation water, and described alkaline matter is a kind of in sodium hydroxide, potassium hydroxide, yellow soda ash, salt of wormwood preferably.
Consider price factor, in the situation that effect is close, the general particular certain cancers inhibiter of the present invention.
Tungstate of the present invention is selected from tungstate and is selected from sodium wolframate and potassium wolframate; Molybdate is selected from Sodium orthomolybdate and potassium molybdate; Vanadate is selected from ortho-vanadate and metavanadate.Tungstate is preferably from anhydrous wolframic acid sodium, tungstate dihydrate acid sodium and anhydrous wolframic acid potassium; Molybdate is preferably from anhydrous molybdic acid sodium, Sodium Molybdate Dihydrate and five water potassium molybdates; Vanadate is preferably from 12 water sodium orthovanadates, ortho-vanadic acid potassium, two water sodium metavanadates, anhydrous sodium metavanadate, potassium metavanadate.
Composite corrosion inhibitor of the present invention with respect to the effective concentration of pending each component of aqueous solution total amount is: molybdate is 20-50mg/L, and tungstate is 20-50mg/L, and vanadate is 20-50mg/L
Ozone of the present invention is produced by ozonizer, and the after-odour oxygen content control in the water is at 0.05-0.1mg/L; The frequency that adds of hydrogen peroxide is to add once in every 2-4 days, and adding concentration is 20mg/L.
B of the present invention) going on foot described inhibiter can add in the mode of single dose, also can be mixed with first composite corrosion inhibitor, composite scale-inhibiting corrosion inhibitor is once added in the recirculated water again, preferably carries out in the latter's mode.Available ordinary method prepares composite corrosion inhibitor of the present invention, and the reinforced order of each component is unimportant, for example vanadate, molybdate, tungstate and water can be mixed by predetermined concentration, can make required composite corrosion inhibitor.
The addition step of circulating water treatment method of the present invention is unimportant, can be successively by a), b) and c) step carry out, also can carry out a)-c) step by other arbitrary orders, can also carry out simultaneously these three steps.
Sewage recirculating cooling water system as moisturizing after two embrane methods are processed that method of the present invention is applicable to after the second-stage treatment is processed, and can effectively control corrosion and microorganism growth.Used inhibiter toxicity is low, generates oxygen G﹠W environmentally safe after the used sterilant degraded.
Embodiment
Following corrosion inhibitor formula embodiment will help to illustrate the present invention, but not limit to its scope.Test water is deionized water, and the carbon steel test piece is the 20# steel.Test water water quality sees Table 1.
Table 1 quality of de-ionized water
| Specific conductivity/(us/cm) | The pH value | Total molten solid/ppb |
| 2 | 6.0 | 300 |
The measuring method of water quality is with reference to as follows:
PH value: GB/T 6920-1986 " the mensuration glass electrode method of water pH value "
Specific conductivity: GB/T 6908-2008 " mensuration of boiler feed water river water coolant analytical procedure specific conductivity "
Total molten solid: GB/T 14415-2007 " mensuration of solid matter in industrial circulating cooling water and the boiler feed water ".
The corrosion inhibition of following embodiment gained and bactericidal property assessment method are as follows:
Corrosion inhibitionThe test piece of 20# qualitative carbon steel is fixed on the lacing film instrument, puts into the test water that is added with the drug concentration that adds by embodiment, 45 ± 1 ℃ of steady temperatures keep rotating speed 75rpm rotation 72h, and the weight of test piece is calculated average corrosion rate before and after the record test.
The average corrosion rate calculation formula is: F=(C * △ W)/(A * T * ρ)
C: computational constant, take mm/a (millimeter/year) during as unit, C=8.76 * 10
7
△ W: the corrosion weight loss of test specimen (g)
A: the area (cm of test specimen
2)
T: corrosion test time (h)
ρ: the density (kg/m of material for test
3).
The mensuration of heterotrophic bacterium:Get test water, in sterilisable chamber, adopt 10 times of dilution technologies of former water, test water is diluted to suitable multiple, and the water sample of corresponding extension rate is inoculated in the culture dish.Then aseptic culture medium is poured in the culture dish, mix with water sample, cultivate 72 ± 4h etc. being inverted in the incubator that is placed on 29 ± 1 ℃ after the culture medium solidifying.After the cultivation, take out culture dish, select those culture dish with 30-300 bacterium colony to count, colony number be multiply by the heterotrophic bacterium number that corresponding dilution training number is this water sample.
Adhere to the mensuration of speed:Test tube is positioned in the bypass of interchanger, takes out test tube after the off-test, clean the test tube outer wall after, constant temperature drying takes by weighing the heavy (W of band bur test tube
1).Then clean the inboard wall of test tube bur, dry, take by weighing the heavy (W of test tube
2), calculate and adhere to speed F '.
F’=7.2×10
5×(W
1-W
2)/（A×t）
A: the area (cm of test specimen
2)
T: corrosion test time (h).
Embodiment 1
Taking by weighing 35.0g anhydrous molybdic acid sodium and 50.5g tungstate dihydrate acid sodium, to join the 114.5g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of Sodium orthomolybdate and sodium wolframate is respectively 35 mg/L, 45mg/L in the water, control the pH value 10.5 with potassium hydroxide, be 45 ℃ in temperature, rotating speed is that to record erosion rate behind the operation 72h under the 75r/min condition be 0.0341mm/a.
Embodiment 2
Taking by weighing 29.4g Sodium Molybdate Dihydrate and 77.4g 12 water sodium orthovanadates, to join the 93.2g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of Sodium orthomolybdate and sodium orthovanadate is respectively 25mg/L, 35mg/L in the water, control the pH value 11.2 with sodium hydroxide, be 45 ℃ in temperature, rotating speed is that to record erosion rate behind the operation 72h under the 75r/min condition be 0.0401mm/a.
Embodiment 3
Taking by weighing the anhydrous sodium metavanadate of 35.0g anhydrous wolframic acid sodium and 45.0g, to join the 120.0g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of wooden sodium wolframate and sodium metavanadate is respectively 35 mg/L, 45mg/L in the water, control the pH value 10.5 with potassium hydroxide, be 45 ℃ in temperature, rotating speed is that to record erosion rate behind the operation 72h under the 75r/min condition be 0.0395mm/a.
Embodiment 4
Taking by weighing 62.0g five water potassium molybdates and 35.0g potassium metavanadate, to join the 103.0g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of potassium molybdate and potassium metavanadate is respectively 45mg/L, 35mg/L in the water, control the pH value 10.0 with salt of wormwood, be 45 ℃ in temperature, rotating speed is that to record erosion rate behind the operation 72h under the 75r/min condition be 0.0395mm/a.
Embodiment 5
Taking by weighing 30.0g anhydrous wolframic acid potassium and 30.0g ortho-vanadic acid potassium, to join the 140.0g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of potassium wolframate and ortho-vanadic acid potassium is respectively 30mg/L, 30mg/L in the water, control the pH value 11.0 with potassium hydroxide, be 45 ℃ in temperature, rotating speed is that to record erosion rate behind the operation 72h under the 75r/min condition be 0.0400mm/a.
Embodiment 6
Taking by weighing 35.3g Sodium Molybdate Dihydrate, 28.1g tungstate dihydrate acid sodium and 31.6g two water sodium metavanadates, to join the 105.0g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of Sodium orthomolybdate, sodium wolframate, sodium metavanadate is respectively 30mg/L, 25mg/L, 25mg/L in the water, control the pH value 9.20 with yellow soda ash, be 45 ℃ in temperature, rotating speed is that to record erosion rate behind the operation 72h under the 75r/min condition be 0.0218mm/a.
Comparative Examples 1
Taking by weighing 80.0g anhydrous molybdic acid sodium, to join the 120.0g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of Sodium orthomolybdate is respectively 80mg/L in the water, 10.5, be 45 ℃ in temperature with sodium hydroxide control pH value, rotating speed is to move under the 75r/min condition that to record erosion rate behind the 72h be 0.0926mm/a.
Comparative Examples 2
Taking by weighing 52.9g Sodium Molybdate Dihydrate and 44.2g 12 water sodium orthovanadates, to join the 102.9g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of Sodium orthomolybdate and sodium orthovanadate is respectively 45mg/L, 35mg/L in the water, adjust pH is not 45 ℃ in temperature, rotating speed be under the 75r/min condition operation to record erosion rate behind the 72h be 0.3210mm/a.
Comparative Examples 3
Taking by weighing the anhydrous sodium metavanadate of 35.0g anhydrous wolframic acid sodium and 45.0g, to join the 120.0g deionized water for stirring even, is made into inhibiter 200.0g of the present invention.
Inhibiter and the deionized water of the present embodiment are rotated coupon test, the concentration that effectively adds of wooden sodium wolframate and sodium metavanadate is respectively 35 mg/L, 45mg/L in the water, adjust pH not, be 45 ℃ in temperature, rotating speed is that to record erosion rate behind the operation 72h under the 75r/min condition be 0.3158mm/a.
Comparative Examples 4
By controlling corrosion with the sodium hydroxide adjust pH, be 45 ℃ in temperature separately, rotating speed is to record corrosion data such as table 2 behind the operation 72h under the 75r/min condition.
Table 2 pH value is on the impact of corrosion of carbon steel
| The pH value | 10.0 | 11.0 | 12.0 |
| Erosion rate (mm/a) | 1.0345 | 0.0483 | 0.0722 |
Embodiment 6
For simulated field, carried out dynamic analog test.The dynamic analog test method is undertaken by the chemical industry standard HG/T2160-2008 of the People's Republic of China (PRC), and the control parameter is as follows.
Test water quality: test water (deionized water)
Flow velocity: 1.0m/s
Temperature in: 32 ± 1 ℃ of temperature difference: 10 ℃
Days running: 15 days.
A tower: add first the composite corrosion inhibitor among the embodiment 1, make that the effective concentration of Sodium orthomolybdate and sodium wolframate is respectively 35 mg/L, 45mg/L in the water, then adding hydrogen peroxide, to make its effective concentration in water be 20mg/L, regulating the pH value with potassium hydroxide simultaneously is 10.5, will control in real time density of corrosion inhibitor afterwards and the pH value remains unchanged.Hydrogen peroxide added once every three days.Analog result sees Table 3, table 4.
B tower: in recirculated water, pass into ozone with ozonizer first, make the ozone concn in the water reach 0.05mg/L, then add the composite corrosion inhibitor among the embodiment 3, make that the effective concentration of sodium wolframate and sodium metavanadate is respectively 35mg/L, 45mg/L in the water, regulating the pH value with potassium hydroxide simultaneously is 10.5, will control in real time density of corrosion inhibitor afterwards and the pH value remains unchanged, Residual ozone concentration maintains 0.05-0.1mg/L.Analog result sees Table 3, table 4.
C tower: regulate pH value to 9.2 with yellow soda ash, then add the composite corrosion inhibitor among the embodiment 5, make the effective concentration of Sodium orthomolybdate in the water, sodium wolframate and sodium metavanadate be respectively 30 mg/L, 25mg/L, 25mg/L, then in recirculated water, pass into ozone with ozonizer, make the ozone concn in the water reach 0.05mg/L, will control in real time density of corrosion inhibitor afterwards and the pH value remains unchanged, Residual ozone concentration maintains 0.05-0.1mg/L.Analog result sees Table 3, table 4.
Table 3 dynamic analog test test tube result
Table 4 heterotrophic bacterium monitoring result
| Sample time | The 3rd day | The 6th day | The 9th day | The 12nd day | The 15th day |
| The A tower | 3.3×10 4 | 5.4×10 3 | 3.5×10 3 | 3.5×10 4 | 6.4×10 3 |
| The B tower | 4.2×10 3 | 7.1×10 3 | 3.1×10 3 | 4.0×10 3 | 2.3×10 3 |
| The C tower | 2.3×10 3 | 2.7×10 3 | 3.4×10 3 | 2.6×10 3 | 8.3×10 3 |
The heterotrophic bacterium unit of number: individual/mL.
Regulation among the standard GB/T 50050-2007 " Code for design of industrial recirculating cooling water treatment ", the corrosion speed of the carbon steel tube wall of open type system is less than or equal to 0.125mm/a; The corrosion speed of " the small-sized experimental analogic method of testing laboratory " regulation carbon steel is " fine " level at 0-0.028mm/a in " water coolant analysis and the test method " of production department of China PetroChemical Corporation and development division establishment, 0.028-0.056mm/a between be " good " level, 0.056-0.070mm/a for " can allow " level; Adhesion speed is " fine " level at 0-6mcm, is " good " level at 6-15mcm, is " can allow " level at 15-20mcm.Heterotrophic bacterium is controlled at 10
5Below be qualified.
This shows, using circulating water treatment prescription of the present invention is applied to deionized water and does in the circulating cooling make-up water, the erosion rate of A, B, each tower test tube of C all is lower than 0.05mm/a, reach China Petrochemical Industry's " good level " standard, adhere to speed and all be lower than 8mcm, reach " good level " standard, heterotrophic bacterium is all less than 1.0 * 10
5In the span of control.
Claims (8)
1. one kind with the circulating water treatment method of deionized water as moisturizing, and it may further comprise the steps: a) the pH value of controlled circulation water is at 9-11.5; B) add the type oxide film inhibiter, described type oxide film inhibiter is the mixture that is selected from least two kinds of salt of tungstate, molybdate, vanadate; C) add the environment-friendly type sterilant, described environment-friendly type sterilant is hydrogen peroxide or ozone.
2. circulating water treatment method according to claim 1 is characterized in that the pH value with alkaline matter controlled circulation water.
3. circulating water treatment method according to claim 2 is characterized in that described alkaline matter is to be selected from a kind of in sodium hydroxide, potassium hydroxide, yellow soda ash, the salt of wormwood.
4. each described circulating water treatment method is characterized in that tungstate is selected from sodium wolframate and potassium wolframate according to claim 1-3; Molybdate is selected from Sodium orthomolybdate and potassium molybdate; Vanadate is selected from ortho-vanadate and metavanadate.
5. circulating water treatment method according to claim 4 is characterized in that tungstate is selected from anhydrous wolframic acid sodium, tungstate dihydrate acid sodium and anhydrous wolframic acid potassium; Molybdate is selected from anhydrous molybdic acid sodium, Sodium Molybdate Dihydrate and five water potassium molybdates; Vanadate is selected from 12 water sodium orthovanadates, ortho-vanadic acid potassium, two water sodium metavanadates, anhydrous sodium metavanadate, potassium metavanadate.
6. each described circulating water treatment method according to claim 1-5, it is characterized in that with respect to the effective concentration of pending each component of aqueous solution total amount being: molybdate is 20-50mg/L, and tungstate is 20-50mg/L, and vanadate is 20-50mg/L.
7. each described circulating water treatment method is characterized in that ozone is produced by ozonizer according to claim 1-6, and the after-odour oxygen content control in the water is at 0.05-0.1mg/L.
8. each described circulating water treatment method according to claim 1-7 is characterized in that it is to add once in every 2-4 days that hydrogen peroxide adds frequency, and adding concentration is 20mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110292118.2A CN103030224B (en) | 2011-09-29 | 2011-09-29 | A kind of deionized water does the circulating water treatment method of moisturizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110292118.2A CN103030224B (en) | 2011-09-29 | 2011-09-29 | A kind of deionized water does the circulating water treatment method of moisturizing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103030224A true CN103030224A (en) | 2013-04-10 |
| CN103030224B CN103030224B (en) | 2015-09-09 |
Family
ID=48017682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110292118.2A Active CN103030224B (en) | 2011-09-29 | 2011-09-29 | A kind of deionized water does the circulating water treatment method of moisturizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103030224B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014138568A1 (en) * | 2013-03-07 | 2014-09-12 | Arch Chemicals, Inc. | Activated peroxide compositions for anti-microbial applications |
| CN105036428A (en) * | 2015-07-27 | 2015-11-11 | 南通昊友食品添加剂有限公司 | Method for softening treatment of water used for food additives |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338433A (en) * | 2000-08-11 | 2002-03-06 | 中国石油化工股份有限公司 | Method for using treated sewage in circulating water system |
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
-
2011
- 2011-09-29 CN CN201110292118.2A patent/CN103030224B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338433A (en) * | 2000-08-11 | 2002-03-06 | 中国石油化工股份有限公司 | Method for using treated sewage in circulating water system |
| CN1919752A (en) * | 2006-09-11 | 2007-02-28 | 北京瀚博英电力科技有限公司 | Environment-friendly type composite corrosion and scale inhibitor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014138568A1 (en) * | 2013-03-07 | 2014-09-12 | Arch Chemicals, Inc. | Activated peroxide compositions for anti-microbial applications |
| CN105036428A (en) * | 2015-07-27 | 2015-11-11 | 南通昊友食品添加剂有限公司 | Method for softening treatment of water used for food additives |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103030224B (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103319009B (en) | Method for applying desalinated seawater to circulating cooling water system | |
| Moisés et al. | Treatment of industrial effluents by a continuous system: Electrocoagulation–Activated sludge | |
| Rodríguez et al. | Kinetic study and oxygen transfer efficiency evaluation using respirometric methods in a submerged membrane bioreactor using pure oxygen to supply the aerobic conditions | |
| CN101597119A (en) | Integrating technology of water supplying and saving and sewage reusing technology system in petroleum and petrochemical industry | |
| CN103319007B (en) | Method for reuse of reclaimed water in circulating cooling water | |
| CN102491544B (en) | Process method for treating recycled water recycling high-concentration-ratio circulating water | |
| CN102976512B (en) | Chemical processing method of coal chemical industry recycled circulating cooling water | |
| Wang et al. | Effective flocculation of Microcystis aeruginosa with simultaneous nutrient precipitation from hydrolyzed human urine | |
| Sambo et al. | Quantification of biodegradable natural organic matter (NOM) fractions and its impact on bacterial regrowth in a South African Water Treatment Plant | |
| CN110386728B (en) | Integrated process for treating high-salinity high-COD industrial wastewater through tubular free radical oxidation | |
| Zhao et al. | Synergistic sterilization effects produced by weak electrolysis process in simulated industrial circulating cooling water | |
| CN103030224B (en) | A kind of deionized water does the circulating water treatment method of moisturizing | |
| Taheri et al. | Assessment of nanoclay-sludge ratios in sequencing batch membrane bioreactors: azo dye removal and fouling alleviation | |
| CN103030238B (en) | A kind of deionized water does the circulating water treatment method of moisturizing | |
| CN103030227B (en) | Circulating water treatment method adopting deionized water as supplement water | |
| CN103318996B (en) | A kind of method sea water desaltination water is applied in recirculating cooling water system | |
| Lim et al. | Removal of organic matter and nitrogen in swine wastewater using an integrated ion exchange and bioelectrochemical system | |
| CN103030240A (en) | Circulating water treatment method adopting deionized water as supplement water | |
| CN102476872B (en) | Circulating water treatment method adopting deionized water as supplement water | |
| CN101709473B (en) | High-temperature water-soluble corrosion inhibitor | |
| CN103030239B (en) | Circulating water treatment method adopting deionized water as supplement water | |
| CN105060656B (en) | Biochemical system auxiliary device and application thereof | |
| Kłosok-Bazan | Innovations in industrial water preparation in a metallurgical plant | |
| CN103030228A (en) | Circulating water treatment method adopting deionized water as supplement water | |
| CN110183012A (en) | A kind of method for treating circulating cooling water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |