CN109399795A - Circulating water cooling treatment system and its method of application and circulating water cooling treatment - Google Patents
Circulating water cooling treatment system and its method of application and circulating water cooling treatment Download PDFInfo
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- CN109399795A CN109399795A CN201710695324.5A CN201710695324A CN109399795A CN 109399795 A CN109399795 A CN 109399795A CN 201710695324 A CN201710695324 A CN 201710695324A CN 109399795 A CN109399795 A CN 109399795A
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
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Abstract
The present invention relates to recirculated cooling water fields, are related to circulating water cooling treatment system and its using the method with circulating water cooling treatment.Specifically, system of the present invention contains ecological floating island, acid-producing bacteria, autotrophic microbe and optional oxygen consumption agent.It when carrying out circulating water cooling treatment using system provided by the invention, can make to keep good water quality with the recirculated cooling water of recycle-water moisturizing, and keep the heat exchanger tube in recirculating cooling water system that there is lower corrosion rate and adherency rate.Meanwhile the system that the present invention uses has the advantages that environmentally protective based on biological agent.In addition, system provided by the invention may be directly applied in existing recirculating cooling water system, without additionally increasing advanced treatment device, to greatly reduce processing cost.
Description
Technical field
The present invention relates to recirculated cooling water fields, and in particular, to a kind of circulating water cooling treatment system and its application,
And the method for circulating water cooling treatment.
Background technique
Industrial circulating cooling water system in the process of running, because of situations such as moisture evaporation, windage loss make recirculated water not
Disconnected concentration, anion contained therein and the increase of cationic concentration, pH value variation etc. cause water quality deterioration, cause to corrode or tie
Dirt, and the temperature of recirculated water, pH value and nutritional ingredient are conducive to the breeding of microorganism, sufficient solar radiation is even more on cooling tower
The ideal place of algal grown.It is water-saving increasingly to be paid attention to by each industrial enterprise with the worsening shortages of water resource, and recycle cold
But the moisturizing of water is up to the 70% of industrial water, and therefore, more and more industrial enterprises attempt using recycle-water (after treatment
Sanitary sewage or industrial wastewater) moisturizing or part moisturizing as recirculated water, a large amount of anion and cation, reproducibility have
Machine object, nitrogen, phosphorus etc. enter recirculated water with recycle-water, accelerate the deterioration of water quality, promote corrosion or fouling and biological sludge in industrial
With the growth of algae, cause the ratio of moisturizing shared by recycle-water lower.
CN204550259U provides a kind of system that municipal middle water is supplemented water as circulating cooling water of power plant, including successively
The former pond of connection, pulling flow type chlorine contact ditch, becomes hole filtering pool and clear water reserviors, the input terminal and coagulant of clarifying basin at clarifying basin
Injection device is connected, and the input terminal of pulling flow type chlorine contact ditch is connected with sulfuric acid injection device and fungicide injection device respectively
Logical, the injection end of former pond is connected with city secondary sewage water-supply-pipe, and the output end and recirculated cooling water of clear water reserviors supplement water
System is connected.
CN203474601U discloses a kind of water treatment system, and the distribution reservoir including that can be passed through municipal middle water, feature exists
It is communicated with aeration biological fluidization pool in the distribution reservoir, aeration biological fluidization pool is communicated with intermediate pool, and intermediate pool passes through
Intermediate lift pump, pipeline connection have pipe-line mixer in pond, and pipe-line mixer has clarifying basin by pipeline connection, and clarifying basin goes out
Water connects recirculating cooling water system.
CN104230015A discloses a kind of composite slow release antisludging agent suitable for petrifaction sewage reuse circulation, by
2- phosphate butane -1,2,4- tricarboxylic acids, hydroxy ethylene diphosphonic acid, aminotrimethylenephosphonic acid and zinc sulfate composition.
CN101921022A discloses a kind of anti-incrustation corrosion inhibitor for making power plant circulating cooling water for middle water, the scale inhibition
Corrosion inhibiter includes two groups of materials: the 1st group of material includes organic phosphonate, polycarboxylic acids multiple copolymer, zinc salt and water, and wherein water is
Solvent；2nd group of material includes copper inhibitor；Two groups of materials independently dispense.
CN102351325A discloses a kind of its raw material components of Treated sewage reusing anti-incrustation corrosion inhibitor are as follows: deionized water, polycarboxylic acids,
Phosphine carboxylic acid, sodium molybdate, zinc salt, copper inhibitor.
CN101423300 discloses a kind of anti-incrustation corrosion inhibitor suitable for Treated sewage reusing system, by poly-epoxy succinic acid, 2-
Phosphonobutane 1,2,4- tricarboxylic acids, C6-C24 fatty amine and nonionic surface active agent successively press 1: 1.0-2.0: 0.5-1.0:
1.0-2.0 mass ratio compounding made of anti-incrustation corrosion inhibitor.
It can be seen that focusing mostly at present by the circulating water treatment of moisturizing of recycle-water at two aspects, it is back on one side
It is after recycle-water enters recirculating cooling water system on the other hand with advanced treating of the water before entering recirculating cooling water system
Chemicals treatment.However, the former generally requires to increase the investment of advanced treatment device, the latter not only consumes a large amount of chemical agent,
And these chemical agents can aggravate environmental pressure with the outlet of recirculating water blowdown water.Therefore, it is quite necessary to find one kind both
It can make to keep good water quality, and environmentally protective and lower-cost recirculated cooling water with the recirculated cooling water of recycle-water moisturizing
Processing method.
Summary of the invention
The purpose of the invention is to overcome drawbacks described above of the existing technology, a kind of circulating water cooling treatment use is provided
The method of system and its application and circulating water cooling treatment.Circulating water cooling treatment is carried out using system provided by the invention
When, it can make to keep good water quality with the recirculated cooling water of recycle-water moisturizing, and keep changing in recirculating cooling water system
Heat pipe has lower corrosion rate and adherency rate.
To achieve the goals above, in a first aspect, the present invention provides a kind of circulating water cooling treatment systems, wherein
The system contains ecological floating island, acid-producing bacteria, autotrophic microbe and optional oxygen consumption agent.
Second aspect, the present invention also provides application of the above-mentioned system in circulating water cooling treatment.
The third aspect, the present invention also provides a kind of methods of circulating water cooling treatment, this method comprises: ecology is floating
Island, acid-producing bacteria, autotrophic microbe and optional oxygen consumption agent are added into recirculating cooling water system.
The present invention containing ecological floating island, acid-producing bacteria, autotrophic microbe and the system of optional oxygen consumption agent by will add
Into recirculating cooling water system, COD (COD), ammonia-nitrogen content and the total phosphorus that can be effectively reduced recirculated cooling water contain
Amount, and keep the heat exchanger tube in recirculating cooling water system that there is lower corrosion rate and adherency rate.
In the preferred embodiment of the present invention, acid-producing bacteria and autotrophic microbe are added into collecting-tank, and catchmented
Ecological floating island is launched in pond, while adding oxygen consumption agent in the inlet of circulating pump, can reduce the COD value of recirculated cooling water extremely
28mg/L is hereinafter, ammonia-nitrogen content is reduced to 2.55mg/L hereinafter, total phosphorus content is reduced to 0.95mg/L or less；Also, holding follows
The corrosion rate of heat exchanger tube in ring cooling water system is in 0.056mm/a hereinafter, adherency rate is in 9.6mcm or less.
Meanwhile the system that the present invention uses has environmentally protective based on biological agent (such as acid-producing bacteria, autotrophic microbe)
The advantages of.In addition, circulating water cooling treatment provided by the invention may be directly applied to existing circulating cooling water system with system
In system, without additionally increasing advanced treatment device, to greatly reduce processing cost.
Detailed description of the invention
Fig. 1 is the schematic diagram for the recirculating cooling water system that the present invention uses.
Description of symbols
A collecting-tank B circulating pump
C heat exchanger D cooling tower
A water inlet line b outlet conduit
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
In a first aspect, the present invention provides a kind of circulating water cooling treatment systems, wherein it is floating that the system contains ecology
Island, acid-producing bacteria, autotrophic microbe and optional oxygen consumption agent.
In the present invention, term " ecological floating island " refers to a kind of by engineer's construction, floats on the water surface, with bamboo and wood
Or artificial synthesized high molecular material is matrix or carrier, for planting higher aquatic plants or terrestrial plant, for animals and plants and
The biological and ecological facility that microorganism grows, multiplies, inhabiting.There is no particular limitation for type of the present invention to the ecological floating island,
It can be type of this field conventionally used for water body purification.In situations where it is preferred, the ecological floating island includes floatable load
Body and the plant to grow nonparasitically upon another plant on the carrier, wherein the plant can be the terrestrial plant of water plant and/or improvement, excellent
It is selected as water plant, more preferably one of reed, big drift and water hyacinth or a variety of.
In the present invention, to the source of the ecological floating island, there is no particular limitation, for example, can voluntarily prepare, it can also
To be obtained by conventional commercially available means.
In system of the present invention, the gross area of the ecological floating island can carry out conventional according to the volume of recirculated water
Selection, if can achieve water body purification and microorganism attachment purpose, for example, provide ecological floating island make relative to
Every L recirculated cooling water, the gross area of the ecological floating island are 1-8cm2, preferably 1.5-6cm2。
According to the present invention, the weight ratio of the acid-producing bacteria and the autotrophic microbe is 1:0.01-100, preferably 1:
0.01-50, more preferably 1:0.05-20.The weight of microorganism involved in the present invention is in terms of cell butt.
In the present invention, the content of the oxygen consumption agent can be set according to the concentration of circulating cooling oxygen in water
It sets, it is preferable that the content of the oxygen consumption agent makes concentration≤2mg/L of circulating cooling oxygen in water, preferably≤1mg/L.
According to the present invention, term " acid-producing bacteria " refers to the bacterium that can produce acidic materials (such as organic acid) (for the micro- life of heterotrophism
Object).In situations where it is preferred, the acid-producing bacteria is to produce sour bacillus, for example, bacillus (Bacillus), fusiform bud
Spore Bacillus (Clostridium), lysine bacillus (Lysinibacillus) and alicyclic acid bacillus
At least one of (Alicyclobacillus) acid-producing bacteria.
Preferably, the acid-producing bacteria is selected from bacillus coagulans (Bacillus coagulans), this Mi Shi bacillus
(Bacillus smithii), bacillus stearothermophilus (Bacillus stearothermophilus), D-lactic acid gemma
Bacillus (Bacillus laevolacticus), racemic lactic acid bacillus (Bacillus racemilacticus), balloon bud
Spore bacillus (Bacillus vesicuiferous), clostridium butyricum (Clostridium butyricum), lysine
Bacillus (Lysinibacillus sphaericus) and acid heat alicyclic acid bacillus (Alicyclobacillus
At least one of acidocaldarius).
It is highly preferred that the acid-producing bacteria is selected from bacillus coagulans, bacillus stearothermophilus, D-lactic acid gemma bar
At least one of bacterium, clostridium butyricum and acid heat alicyclic acid bacillus.
In the present invention, to the form of the acid-producing bacteria, there is no particular limitation, as long as being put into circulating cooling water system
There is the activity for generating acidic materials, for example, the form of the acid-producing bacteria can be in pulvis, bacteria suspension and emulsion in system
At least one, preferably pulvis.
In the present invention, to the source of the acid-producing bacteria, there is no particular limitation, for example, can pass through conventional commercially available hand
Section directly obtains；Strain can also be obtained by conventional means, then by conventional microbial culture method to strain into
Row voluntarily expands culture and obtains.
According to the present invention, term " autotrophic microbe " refers to using carbon dioxide or carbonate as main or unique carbon
Source, using ammonium salt or nitrate as nitrogen source, to synthesize the mushroom of itself thallus.
In the present invention, the acid-producing bacteria is different from the autotrophic microbe.
In the present invention, the autotrophic microbe can in nitrobacteria, sulfide-oxidizing enzyme and hydrogen bacteria at least one
Kind.Wherein, term " hydrogen bacteria " refers to using hydrogen as electron donor, is a kind of thin of organic matter by carbon dioxide reduction
Bacterium, therefore, hydrogen bacteria of the present invention are autotrophic microbe.Preferably, the autotrophic microbe is nitrobacteria and/or sulphur
Change bacterium.
Preferably, the autotrophic microbe is selected from Nitromonas (Nitrosomonas), Nitrosospira
(Nitrosospira), Nitrosococcus (Nitrosococcus), Nitrosolobus (Nitrosolobus), nitrification thorn
At least one of Pseudomonas (Nitrospina), Nitrococcus (Nitrococcus) and Thiobacillus (Thiobacillus)
Autotrophic microbe.
It is highly preferred that the autotrophic microbe is selected from Nitrosomonas europaea (Nitrosomonas europaea), resistance to
Cold nitrosomonas (Nitrosomonas cryotolerans), many types of Nitrosospira (Nitrosospira
Multiformis), ocean Nitrosococcus (Nitrosococcus oceani), Nitrospira gracilis (Nitrospina
Gracilis), activity nitrification coccus (Nitrococcus mobilis), Thiobacillus thioxidans (Thiobacillus
Thiooxidans), grate sulfur thiobacillus (Thiobacillus thioparus) and thiobacillus denitrificans (Thiobacillus
At least one of denitrificans)；
It is further preferred that the autotrophic microbe is selected from Nitrosomonas europaea, many types of Nitrosospira, ocean Asia
Nitrify at least one of coccus, grate sulfur thiobacillus and thiobacillus denitrificans.
In the present invention, to the form of the autotrophic microbe, there is no particular limitation, as long as being put into circulating cooling
It is active in water system, for example, the form of the autotrophic microbe can in pulvis, bacteria suspension and emulsion at least
One kind, preferably pulvis.
In the present invention, to the source of the autotrophic microbe, there is no particular limitation, for example, can pass through conventional quotient
Purchase means directly obtain；Strain can also be obtained by conventional means, then by conventional microbial culture method to bacterium
Kind carries out voluntarily expanding culture acquisition.
According to the present invention, the oxygen consumption agent can reduce oxygen content in water for common various in this field and (or disappear
Oxygen in water consumption) substance, for example, can be at least one of selected from sodium sulfite, hydrazine hydrate and dimethyl ketone oxime.
In a preferred embodiment of the invention, the ecological floating island, the acid-producing bacteria, the autotrophic microbe and described
Oxygen consumption agent is individually separated preservation；Alternatively, the acid-producing bacteria and the autotrophic microbe save jointly, but they and the ecology
Chinampa and the oxygen consumption agent are individually separated preservation.
Second aspect, the present invention also provides application of the above-mentioned system in circulating water cooling treatment, especially to return
With the application that water is in the circulating water cooling treatment of moisturizing.
In the present invention, term " recycle-water " refers to industrial wastewater or city domestic sewage through two stage treatment and advanced treating
It is made for the water of reuse afterwards.
In situations where it is preferred, in recycle-water of the present invention, with CaCO3The Ca of meter2+Concentration is 150-300mg/
L, preferably 185-297mg/L；With CaCO3The total hardness of meter is 200-500mg/L, preferably 245-468mg/L；With CaCO3Meter
Total alkalinity be 100-200mg/L, preferably 104-195mg/L；Cl-Concentration is 20-200mg/L, preferably 41-152mg/L；
COD value is 20-60mg/L, preferably 45-56mg/L；Ammonia-nitrogen content in terms of N element is 4-6mg/L, preferably 4.7-
5.8mg/L；With PO4 3-The total phosphorus concentration of meter is 0.5-5mg/L, preferably 0.9-3.6mg/L；PH value is 6-9, preferably 8-
8.5。
In the present invention, total phosphorus is with PO4 3-Meter.Ca2+Detect reference standard GB/T 6910-2006；Total alkalinity detects reference
Standard GB/T 15451-2006；Total hardness detects reference standard GB/T 6909-2008；Cl-Concentration Testing reference standard GB/T
15453-2008；PH value detects reference standard GB/T 6920-1986；COD detects reference standard GB/T 15456-2008；Ammonia nitrogen
Content detection reference standard HG/T 2158-2011；Total phosphorus concentration detects reference standard HG/T 3540-2011.
The third aspect, the present invention also provides a kind of methods of circulating water cooling treatment, this method comprises: ecology is floating
Island, acid-producing bacteria, autotrophic microbe and optional oxygen consumption agent are added into recirculating cooling water system, it is preferable that the circulation is cold
But water system is using recycle-water as moisturizing.
In the present invention, the definition of the recycle-water and composition are as described above, details are not described herein.
In the present invention, it when the recirculating cooling water system is using recycle-water as moisturizing, needs to carry out the recycle-water
Concentration, the multiple of the concentration make the Cl of the recirculated cooling water before moisturizing-The Cl of concentration and the moisturizing-The ratio of concentration is
1.5-3.5:1 preferably 1.8-3.2:1.
In method of the present invention, the gross area of the ecological floating island can carry out conventional according to the volume of recirculated water
Selection, as long as can achieve the purpose of water body purification, for example, relative to every L recirculated cooling water, the ecological floating island it is total
Area is 1-8cm2, preferably 1.5-6cm2。
In the present invention, the ecological floating island can be used for a long time, as long as the plant in ecological floating island keeps survival.
In the present invention, the type of the ecological floating island and composition are as described above, details are not described herein.
According to the present invention, the dosing method of the acid-producing bacteria is that substep adds.Preferably, the acid-producing bacteria adds frequency
It added once, adds within preferably every 8-10 days primary for every 5-15 days.It is highly preferred that relative to every L recirculated cooling water, the production
Each dosage of sour bacterium is 5-500mg, preferably 10-200mg.
In a preferred embodiment of the invention, the substep of the acid-producing bacteria add including add for the first time with it is subsequent
It adds.Preferably, relative to every L recirculated cooling water, the dosage for the first time of the acid-producing bacteria is more than or equal to subsequent each dosage,
Preferably greater than subsequent each dosage.It is highly preferred that the dosage for the first time of the acid-producing bacteria is 200-500mg, preferably 200-
300mg；Subsequent each dosage is 5-200mg, preferably 10-200mg.
According to the present invention, the dosing method of the autotrophic microbe is that substep adds.Preferably, the autotrophic microbe
Adding frequency is to add within every 5-15 days once, is added within preferably every 8-10 days primary.It is highly preferred that relative to every L circulating cooling
Water, each dosage of the autotrophic microbe are 5-500mg, preferably 10-200mg.
In a preferred embodiment of the invention, the substep of the autotrophic microbe add including adding for the first time and
It is subsequent to add.Preferably, relative to every L recirculated cooling water, the dosage for the first time of the autotrophic microbe is more than or equal to subsequent every
Secondary dosage, preferably greater than subsequent each dosage.It is highly preferred that the dosage for the first time of the autotrophic microbe is 200-
500mg, preferably 200-300mg；Subsequent each dosage is 5-200mg, preferably 10-200mg.
According to the present invention, the dosage of the oxygen consumption agent makes concentration≤2mg/L of circulating cooling oxygen in water, excellent
Choosing≤1mg/L.
In the present invention, the acid-producing bacteria, the type of the autotrophic microbe and the oxygen consumption agent and source are as above
Described, details are not described herein.
In the present invention, the recirculating cooling water system can be system commonly used in the art, for example, such as Fig. 1 institute
Show, the recirculating cooling water system includes: collecting-tank A, circulating pump B, heat exchanger C, cooling tower D, condensate make-up piping a and sewerage
Pipeline b, wherein collecting-tank A, circulating pump B, heat exchanger C and cooling tower D are sequentially connected by pipeline.In actual use,
Recirculated water in collecting-tank A enters heat exchanger C through circulating pump B, and the recirculated water after exchanging heat enters cooling tower D, after cooling to follow
Ring water returns to collecting-tank A, completes a circulation.During continuous circulating cooling, vapor is lost, recirculated water is constantly concentrated,
Discharge reduction, it is therefore desirable to through moisturizing pipeline a supplement recycle-water, when recirculated water concentration to a certain extent, need to be arranged through blow-off line b
Part recirculated water is out to reduce each ion concentration in recirculated water.
In situations where it is preferred, the position that adds of the ecological floating island is the collecting-tank A in recirculating cooling water system；It is preferred that
The position that adds on ground, the acid-producing bacteria is the collecting-tank A in recirculating cooling water system；It is highly preferred that the autotrophic microbe
Adding position is the collecting-tank A in recirculating cooling water system；It is further preferred that the oxygen consumption agent adds position as circulation
The entrance of circulating pump B (namely adds oxygen before the water outlet in collecting-tank A enters circulating pump B thereto and disappears in cooling water system
Consume agent).
In the following Examples and Comparative Examples,
Ecological floating island plants Co., Ltd purchased from Hebei province, shampoo plant chinampa, source, and main group becomes high density polyphenyl second
Alkene carrier and reed；
The water quality of recycle-water is as shown in table 1, wherein Ca2+Concentration, total alkalinity and total hardness are with CaCO3Meter；Ammonia-nitrogen content
In terms of N element；Total phosphorus concentration is with PO4 3-Meter.
Ca2+Concentration Testing reference standard GB/T 6910-2006；Total alkalinity detects reference standard GB/T 15451-2006；
Total hardness detects reference standard GB/T 6909-2008；Cl-Concentration Testing reference standard GB/T 15453-2008；PH value detection
Reference standard GB/T 6920-1986；COD detects reference standard GB/T 15456-2008；Ammonia-nitrogen content detects reference standard HG/
T 2158-2011；Total phosphorus concentration detects reference standard HG/T 3540-2011.
Table 1
For the scene of simulating, dynamic simulation test has been carried out.Dynamic simulation test method presses People's Republic of China's chemical industry
Professional standard HG/T2160-2008 is carried out, and test piece and test tube material are 20#Carbon steel.
COD value, ammonia-nitrogen content and the total phosphorus concentration of the recirculated cooling water of dynamic simulation test detection after processing, and carry out
The evaluation of corrosion rate and adherency rate.
Embodiment 1
The present embodiment is for illustrating method for treating circulating cooling water provided by the invention.
Water quality: the life recycle-water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2.5 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (3cm2/ L recirculated water) it is placed in collecting-tank；Condensation gemma bar is added into collecting-tank
Bacterium (is purchased from BNCC strain library, article No. BNCC337209), and dosage is every L recirculated water 200mg, adds within hereafter every 10 days once,
Each dosage is every L recirculated water 100mg；Meanwhile Nitrosomonas europaea is added into collecting-tank (purchased from BNCC strain
Library, article No. ATCC19718), dosage is every L recirculated water 200mg, is added within hereafter every 10 days once, and each dosage is that every L is followed
Ring water 150mg；Sodium sulfite is added in the inlet of the circulating pump of circulation, keeps molten in recirculated water at heat exchanger exit
It solves oxygen concentration and is less than 1mg/L.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
The results are shown in Table 2 for dynamic simulation test.
Embodiment 2
The present embodiment is for illustrating method for treating circulating cooling water provided by the invention.
Water quality: the industrial reuse water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2.5 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (1.5cm2/ L recirculated water) it is placed in collecting-tank；Stearothermophilus is added into collecting-tank
Bacillus (is purchased from BNCC strain library, article No. BNCC336760), and dosage is every L recirculated water 200mg, adds within hereafter every 10 days
Once, each dosage is every L recirculated water 60mg；Meanwhile many types of Nitrosospira is added into collecting-tank (purchased from BNCC strain
Library, article No. ATCC25196), dosage is every L recirculated water 200mg, is added within hereafter every 10 days once, and each dosage is that every L is followed
Ring water 100mg；Hydrazine hydrate is added in the inlet of the circulating pump of circulation, keeps dissolving in recirculated water at heat exchanger exit
Oxygen concentration is less than 1mg/L.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Embodiment 3
The present embodiment is for illustrating method for treating circulating cooling water provided by the invention.
Water quality: the life recycle-water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (6cm2/ L recirculated water) it is placed in collecting-tank；D-lactic acid bud is added into collecting-tank
Spore bacillus (is purchased from BeNa Culture Collection Institute of Biotechnology, article No. CICC10331), and dosage is every L recirculated water 200mg,
Hereafter it adds within every 10 days once, each dosage is every L recirculated water 150mg；Meanwhile nitrosation ball in ocean is added into collecting-tank
Bacterium (is purchased from BNCC strain library, article No. ATCC19707), and dosage is every L recirculated water 200mg, adds within hereafter every 10 days once, often
Secondary dosage is every L recirculated water 60mg；Dimethyl ketone oxime is added in the inlet of the circulating pump of circulation, keeps heat exchanger
Dissolved oxygen concentration is less than 1mg/L in the recirculated water of exit.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Embodiment 4
The present embodiment is for illustrating method for treating circulating cooling water provided by the invention.
Water quality: the industrial reuse water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (3cm2/ L recirculated water) it is placed in collecting-tank；Butyric acid fusiform bud is added into collecting-tank
Spore bacillus (purchased from Wuhan far at creating Science and Technology Ltd., article No. 35633), dosage are every L recirculated water 200mg, hereafter often
It adds within 10 days once, each dosage is every L recirculated water 10mg；Meanwhile grate sulfur thiobacillus is added into collecting-tank (purchased from BNCC
Strain library, article No. BNCC223406), dosage is every L recirculated water 200mg, is added within hereafter every 10 days once, each dosage is
Every L recirculated water 200mg；Sodium sulfite is added in the inlet of the circulating pump of circulation, keeps recycling at heat exchanger exit
Oxygen in water concentration is less than 1mg/L.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Embodiment 5
The present embodiment is for illustrating method for treating circulating cooling water provided by the invention.
Water quality: the life recycle-water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 3 ± 0.2
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (3cm2/ L recirculated water) it is placed in collecting-tank；Acid heat alicyclic acid is added into collecting-tank
Bacillus (is purchased from Shanghai Ke Wei chemical technology Co., Ltd, article No. ATCC49025), and dosage is every L recirculated water 200mg,
Hereafter it adds within every 10 days once, each dosage is every L recirculated water 200mg；Meanwhile thiobacillus denitrificans are added into collecting-tank
(being purchased from BNCC strain library, article No. ATCC23644), dosage are every L recirculated water 200mg, are added within hereafter every 10 days once, every time
Dosage is every L recirculated water 10mg；Dimethyl ketone oxime is added in the inlet of the circulating pump of circulation, heat exchanger is kept to go out
Dissolved oxygen concentration is less than 1mg/L in recirculated water at mouthful.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Embodiment 6
The present embodiment is for illustrating method for treating circulating cooling water provided by the invention.
Water quality: the life recycle-water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2.5 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (3cm2/ L recirculated water) it is placed in collecting-tank；Condensation gemma bar is added into collecting-tank
Bacterium (with embodiment 1), dosage are every L recirculated water 200mg, are added within hereafter every 10 days once, and each dosage is every L recirculated water
100mg；Meanwhile Nitrosomonas europaea (with embodiment 1) is added into collecting-tank, dosage is every L recirculated water 200mg,
Hereafter it adds within every 10 days once, each dosage is every L recirculated water 150mg.Dissolved oxygen concentration is 1.5-2mg/L in recirculated water.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Comparative example 1
Water quality: the life recycle-water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2.5 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (3cm2/ L recirculated water) it is placed in collecting-tank；Meanwhile European Asia is added into collecting-tank
It nitrifies monad (with embodiment 1), dosage is every L recirculated water 400mg, is added within hereafter every 10 days once, each dosage is
Every L recirculated water 250mg；Sodium sulfite is added in the inlet of the circulating pump of circulation, keeps recycling at heat exchanger exit
Oxygen in water concentration is less than 1mg/L.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Comparative example 2
Water quality: the industrial reuse water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2.5 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: by ecological floating island (1.5cm2/ L recirculated water) it is placed in collecting-tank；Stearothermophilus is added into collecting-tank
Bacillus (with embodiment 2), dosage are every L recirculated water 400mg, are added within hereafter every 10 days once, and dosage is every L circulation
Water 160mg；Hydrazine hydrate is added in the inlet of the circulating pump of circulation, keeps molten in every L recirculated water at heat exchanger exit
It solves oxygen concentration and is less than 1mg/L.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Comparative example 3
Water quality: the industrial reuse water in table 1.
Cycles of concentration (the Cl of recirculated cooling water-Concentration and supplement water Cl-The ratio of concentration): 2.5 ± 0.2:1.
PH: natural
Flow velocity: 1m/s
Processing: adding bacillus stearothermophilus (with embodiment 2) into collecting-tank, and dosage is every L recirculated water
200mg is added once for hereafter every 10 days, and each dosage is every L recirculated water 60mg；Meanwhile many types of Asia is added into collecting-tank
It nitrifies spirillum (with embodiment 2), dosage is every L recirculated water 200mg, is added within hereafter every 10 days once, and each dosage is every L
Recirculated water 100mg；Hydrazine hydrate is added in the inlet of the circulating pump of circulation, keeps molten in recirculated water at heat exchanger exit
It solves oxygen concentration and is less than 1mg/L.
Inlet temperature of the recirculated water at heat exchanger entrance: 32 ± 1 DEG C
The circulation water entrance temperature difference: 8-10 DEG C
Runing time: 60 days
Dynamic simulation test the results are shown in Table 2.
Table 2
By the result of above embodiments 1-6 and comparative example 1-3 being compared as can be seen that the present invention will be by that will contain life
State chinampa, acid-producing bacteria, autotrophic microbe and optional oxygen consumption agent system add into recirculating cooling water system, can be effective
Ground reduces COD value, ammonia-nitrogen content and the total phosphorus content of recirculated cooling water, and the heat exchanger tube in recirculating cooling water system is kept to have
There are lower corrosion rate and adherency rate.
Particularly, by the way that the result of above embodiments 1-5 and embodiment 6 compares it is found that in preferred reality of the invention
It applies in mode, goes out to throw by launching ecological floating island, acid-producing bacteria and autotrophic microbe in collecting-tank, while in the entrance of circulating pump
Oxygenation depleting agents, control loop oxygen in water concentration (≤1mg/L) in particular range, can further decrease heat exchanger tube
Corrosion rate and adherency rate, and keep in recirculating cooling water system there is lower COD value, ammonia-nitrogen content and total phosphorus to contain
Amount.Specifically, the COD value of recirculated cooling water can be reduced to 28mg/L hereinafter, ammonia-nitrogen content is reduced to 2.55mg/L hereinafter, total
Phosphorus content is reduced to 0.95mg/L hereinafter, also, the corrosion rate of the heat exchanger tube in recirculating cooling water system is kept to exist
0.056mm/a is hereinafter, adhere to rate in 9.6mcm or less.
Meanwhile the system that the present invention uses has environmentally protective based on biological agent (such as acid-producing bacteria, autotrophic microbe)
The advantages of.In addition, circulating water cooling treatment provided by the invention may be directly applied to existing circulating cooling water system with system
In system, without additionally increasing advanced treatment device, to greatly reduce processing cost.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (13)
1. a kind of circulating water cooling treatment system, which is characterized in that the system contains the micro- life of ecological floating island, acid-producing bacteria, autotrophy
Object and optional oxygen consumption agent.
2. system according to claim 1, wherein the weight ratio of the acid-producing bacteria and the autotrophic microbe is 1:
0.01-100, preferably 1:0.05-20；
Preferably, the content of the oxygen consumption agent makes concentration≤2mg/L of circulating cooling oxygen in water, preferably≤1mg/L.
3. system according to claim 1 or 2, wherein the acid-producing bacteria is to produce sour bacillus；
Preferably, the acid-producing bacteria is selected from bacillus (Bacillus), Clostridium (Clostridium), relies
At least one of propylhomoserin bacillus (Lysinibacillus), alicyclic acid bacillus (Alicyclobacillus)
Acid-producing bacteria；
It is highly preferred that the acid-producing bacteria is selected from bacillus coagulans (Bacillus coagulans), this Mi Shi bacillus
(Bacillus smithii), bacillus stearothermophilus (Bacillus stearothermophilus), D-lactic acid gemma
Bacillus (Bacillus laevolacticus), racemic lactic acid bacillus (Bacillus racemilacticus), balloon bud
Spore bacillus (Bacillus vesicuiferous), clostridium butyricum (Clostridium butyricum), lysine
Bacillus (Lysinibacillus sphaericus) and acid heat alicyclic acid bacillus (Alicyclobacillus
At least one of acidocaldarius)；
It is further preferred that the acid-producing bacteria is selected from bacillus coagulans, bacillus stearothermophilus, D-lactic acid gemma bar
At least one of bacterium, clostridium butyricum and acid heat alicyclic acid bacillus.
4. system according to claim 1 or 2, wherein the autotrophic microbe is selected from nitrobacteria, sulfide-oxidizing enzyme and hydrogen
At least one of bacterium, preferably nitrobacteria and/or sulfide-oxidizing enzyme；
Preferably, the autotrophic microbe is selected from Nitromonas (Nitrosomonas), Nitrosospira
(Nitrosospira), Nitrosococcus (Nitrosococcus), Nitrosolobus (Nitrosolobus), nitrification thorn
At least one of Pseudomonas (Nitrospina), Nitrococcus (Nitrococcus) and Thiobacillus (Thiobacillus)
Autotrophic microbe；
It is highly preferred that the autotrophic microbe is selected from Nitrosomonas europaea (Nitrosomonas europaea), cold-resistant Asia
Nitrify monad (Nitrosomonas cryotolerans), many types of Nitrosospira (Nitrosospira
Multiformis), ocean Nitrosococcus (Nitrosococcus oceani), Nitrospira gracilis (Nitrospina
Gracilis), activity nitrification coccus (Nitrococcus mobilis), Thiobacillus thioxidans (Thiobacillus
Thiooxidans), grate sulfur thiobacillus (Thiobacillus thioparus) and thiobacillus denitrificans (Thiobacillus
At least one of denitrificans)；
It is further preferred that the autotrophic microbe is selected from Nitrosomonas europaea, many types of Nitrosospira, ocean nitrosation
At least one of coccus, grate sulfur thiobacillus and thiobacillus denitrificans.
5. system according to claim 1 or 2, wherein the oxygen consumption agent is selected from sodium sulfite, hydrazine hydrate and dimethyl
At least one of ketoxime.
6. the system according to any one of claims 1-5, wherein the ecological floating island, the acid-producing bacteria, described
Autotrophic microbe and the oxygen consumption agent are individually separated preservation；
Alternatively, the acid-producing bacteria and the autotrophic microbe save jointly, but they and the ecological floating island and the oxygen consumption
Agent is individually separated preservation.
7. application of the system in circulating water cooling treatment described in any one of claim 1-6, especially with reuse
Water is the application in the circulating water cooling treatment of moisturizing.
8. a kind of method of circulating water cooling treatment, which is characterized in that this method comprises: ecological floating island, acid-producing bacteria, autotrophy is micro-
Biological and optional oxygen consumption agent is added into recirculating cooling water system, it is preferable that the recirculating cooling water system is with recycle-water
For moisturizing.
9. according to the method described in claim 8, wherein, relative to every L recirculated cooling water, the gross area of the ecological floating island is
1-8cm2, preferably 1.5-6cm2。
10. according to the method described in claim 8, wherein, the frequency that adds of the acid-producing bacteria is to add within every 5-15 days once, excellent
It is selected as adding for every 8-10 days primary；
Preferably, relative to every L recirculated cooling water, each dosage of the acid-producing bacteria is 5-500mg, preferably 10-
200mg。
11. according to the method described in claim 8, wherein, the frequency that adds of the autotrophic microbe is to add one in every 5-15 days
It is secondary, it adds within preferably every 8-10 days primary；
Preferably, relative to every L recirculated cooling water, each dosage of the autotrophic microbe is 5-500mg, preferably 10-
200mg。
12. according to the method described in claim 8, wherein, the dosage of the oxygen consumption agent to dissolve in recirculated cooling water
Concentration≤2mg/L of oxygen, preferably≤1mg/L.
13. the method according to any one of claim 8-12, wherein the ecological floating island adds position as circulation
Collecting-tank in cooling water system；
Preferably, the position that adds of the acid-producing bacteria is the collecting-tank in recirculating cooling water system；
Preferably, the position that adds of the autotrophic microbe is the collecting-tank in recirculating cooling water system；
Preferably, the oxygen consumption agent add position be recirculating cooling water system in circulating pump entrance.
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