CN102328986A - Finishing agent for disinfecting sewage and application thereof - Google Patents
Finishing agent for disinfecting sewage and application thereof Download PDFInfo
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- CN102328986A CN102328986A CN201110215808A CN201110215808A CN102328986A CN 102328986 A CN102328986 A CN 102328986A CN 201110215808 A CN201110215808 A CN 201110215808A CN 201110215808 A CN201110215808 A CN 201110215808A CN 102328986 A CN102328986 A CN 102328986A
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Abstract
The invention provides a finishing agent for disinfecting sewage. The finishing agent comprises the following components in parts by weight: 1 part of chlorine-containing disinfectant and 0.01-0.5 part of bromide-containing compound, wherein the chlorine-containing disinfectant is sodium chlorate, bleaching powder or liquid chlorine; and the bromide-containing compound is one or the mixture of sodium bromide and potassium bromide. According to the finishing agent disclosed by the invention, the chlorine-containing disinfectant and the bromide-containing compound are combined to remarkably reduce the usage amount of the chlorine-containing disinfectant or improve the disinfecting efficiency, reduce the consumption of the disinfectant and reduce the disinfecting and processing cost.
Description
(1) technical field
The present invention relates to kind of wastewater disinfection treatment agent and the application in wastewater disinfection is handled thereof.
(2) background technology
Along with the resident improves constantly what quality of the life required, the influence that the water outlet of sewage work causes water body has caused that people pay close attention to the more of health and safety problem more.Municipal effluent is through after the second-stage treatment, and water quality is improved, and bacteria content also reduces significantly, but the absolute value of bacterium is still very high, and has the possibility of pathogenic bacteria.China is the necessary disinfection of regulation sewage disposal plant effluent in " the GB18918-2002 urban wastewater treatment firm pollutant emission standard " of promulgation in the end of the year 2002, and requires the highest permission emission concentration of sewage work's coliform group count of execution secondary standard and one-level B standard to surpass 10
4Individual/L, thus make the pathological index of wastewater treatment in China standard in line with international standards.
Below the disinfection way that current municipal sewage plant both domestic and external adopts is common several kinds: chlorination, ozonization and UV-irradiation sterilization etc.The biggest advantage of chlorination is a low price, and sterilizing power is strong, and this technology is simple; Technology maturation, medicament is easy to get, and the throwing amount is accurate; Follow-up disinfection is arranged, and do not need huge equipment, use the most general disinfection technology though exist secondary pollution problem to be still the municipal sewage plant at present; Ozonization mainly applies to middle section water and handles, and has stronger sterilisation effect and decolorizing effect, is aided with chlorination simultaneously again, to guarantee chlorine residue requirement in the water outlet; The UV-irradiation sterilisation effect is unstable, receive light intensity and water quality impact big, and equipment maintenance cost is higher.
The scope of having stipulated water outlet pH in " GB18918-2002 urban wastewater treatment firm pollutant emission standard " is 6～9, and (sterilization effect of HClO is ClO but the effect of chlorination very easily receives the influence of pH value
-40～80 times).For example, Youxiaolin is when pH=7.5, and the content of HClO is about 50%, when its germ-killing efficiency will be significantly less than pH=6 (at this moment, the HClO massfraction accounts for more than 95%); And the content of HClO is along with the rising of pH significantly reduces, and when pH=9, the HClO massfraction only accounts for 5%, will improve the consumption of Youxiaolin this moment greatly or reduce sterilization effect.And therefore the situation of sewage disposal plant effluent pH >=7.5 is reducing or is just guaranteeing that it is a problem that is worth us to pay attention to that efficient is disinfected in water outlet sterilisation effect or raising under the usual amounts not in minority.Be all hypohalous acid, HBrO is owing to have very strong pH flexibility, and not volatile, receives the concern of many companies.The sterilant product A ctibrom of U.S. NALCO company
TM1338 is exactly the sterilant of chloride, bromine of a kind of while, has the advantage that pH is scalable, germ-killing efficiency is high, and its shortcoming is that application cost is high.Domestic similar products like has C5H6Br2N2O2, bromochlorohydantoin etc., but because of solubleness and cost problem, widespread adoption is not disinfected in the water outlet of sewage work.
(3) summary of the invention
The purpose of this invention is to provide a kind of wastewater disinfection treatment agent and application thereof that improves the wastewater disinfection treatment effect.
The technical scheme that the present invention adopts is:
A kind of wastewater disinfection treatment agent, form by the component that the quality proportioning is following:
1 part in chloride sterilant (in available chlorine)
0.01～0.5 part of bromine-containing compound;
Said chloride sterilant is Youxiaolin or chlorinated lime; Available chlorine is the sign of weighing the chlorine-containing disinfectant oxidation capacity; Be meant the chlorine dose suitable (non-finger sterilizing agent institute chlorinity) with the chlorine-containing disinfectant oxidation capacity; Used Youxiaolin available chlorine content is 10% (w/w) among the present invention, and the chlorinated lime available chlorine content is 25% (w/w) (with reference to from " disinfection technology standard version in 2002 ").
Said bromine-containing compound is one of following or its mixture: Sodium Bromide, Potassium Bromide.
Contriver of the present invention finds after deliberation: when the sterilization of chloride sterilant was used in the Sewage treatment systems water outlet, when pH >=7.5, chloride sterilant usage quantity obviously improves or germ-killing efficiency significantly reduces.The present invention is used in combination chloride bactericide and bromine-containing compound, can significantly reduce the use amount of chloride bactericide or improve germicidal efficiency.
Preferably, said treatment agent quality is formed as follows:
1 part of Youxiaolin
0.01～0.1 part of Sodium Bromide.
The application of described wastewater disinfection treatment agent in wastewater disinfection is handled.
Said wastewater disinfection treatment agent dosage in sewage is 1～20mg/L (in an available chlorine).
Concrete application method is (referring to Fig. 2) as follows:
(1) by the pH value that is arranged on proofing unit (as: online pH meter) the detection water outlet in the second pond water outlet; Like pH >=7.5 o'clock, start chloride sterilant throwing device I, in mixed reactor III, add 1 part of chloride sterilant; After adding finishes; Start bromine-containing compound or compsn throwing device II, in mixed reactor III, add 0.01～0.1 part of bromine-containing compound, both react 0.25～1h; Reaction finishes, and (preferred 10～15mg/L) dosages add in the sewage water outlet by 10～20mg/L (in available chlorine);
(2) by being arranged on the pH value that proofing unit (as: online pH meter) in the second pond water outlet detects water outlet, like pH＜7.5 o'clock, startup chemicals dosing plant I; In water outlet, add chloride sterilant or start chloride sterilant throwing device I; In mixed reactor III, add 1 part of chloride sterilant, after adding finishes, start bromine-containing compound or compsn throwing device II; In mixed reactor III, add 0.01～0.1 part of bromine-containing compound; Both react 0.25～1h, and reaction finishes, and (preferred 1～5mg/L) dosage adds in the sewage water outlet by 1～10mg/L (in available chlorine).
The method that the present invention adopted can significantly reduce the consumption of chloride sterilant or improve the sterilisation effect of chloride sterilant.According to second pond water outlet pH value adjustment sterilant, can reduce the consumption of chloride sterilant or the germ-killing efficiency of raising system, guarantee out water microorganism≤10
4Individual/L, reach emission standard.
Beneficial effect of the present invention is mainly reflected in:
(1) improvement cost is low.Can significantly reduce the consumption of chloride sterilant or the germ-killing efficiency of raising system;
(2) cost is disinfected in reduction.Variation according to second pond water outlet pH value; The sterilization and disinfection scheme of Adjustment System; When second pond water outlet pH>=7.5; Adopt and mix dosing method, under the condition of former dosage 10～100%, significantly improved the germ-killing efficiency of chloride sterilant, guarantee that the water outlet available chlorine content is 0.5～5mg/L at higher pH condition; When second pond water outlet pH≤7.5, can reduce the consumption of chloride sterilant, be 5～50% of former dosage;
(3) reduce the sterilant consumption.Can reduce of the murder by poisoning of chloride sterilant to aquatic and even the ecosystem.
(4) description of drawings
Fig. 1 is existing chloride sterilant disinfectant process flow sheet; Wherein I is chloride sterilant throwing device;
Fig. 2 is a process flow sheet of the present invention; Wherein, I is chloride sterilant throwing device, and II is bromine-containing compound or compsn throwing device, and III is a mixed reactor.
(5) embodiment
Below in conjunction with specific embodiment the present invention is described further, but protection scope of the present invention is not limited in this:
Embodiment 1:
Make up a second pond of the present invention and go out water disinfection system (referring to accompanying drawing 2), water flow is 10m
3/ d goes out pH value (pH/T detector, the HACH of water monitoring system; Together following) and coliform count (colony counting method, down together), adjustment water outlet pH value; Hypochlorous sodium (technical grade) and Sodium Bromide (technical grade) reaction product mixture are as the disinfection sanitizer of system, and concrete operations are following: through chloride sterilant throwing device I (vertical corrosion-resistant jar of PE, the Kunlun, Wuxi plastics ltd; Other embodiment are together) toward mixed reactor III (other embodiment are together for vertical corrosion-resistant jar of PE, the Kunlun, Wuxi plastics ltd) 1 part of Youxiaolin of middle adding; After finishing, dosing in mixed reactor III, adds 0.05 part of Sodium Bromide through bromine-containing compound or compsn device II (other embodiment together for vertical corrosion-resistant jar of PE, the Kunlun, Wuxi plastics ltd) again; Behind the hybrid reaction 1h; Add and mix in the sterilization pool, dosage is seen table 1 (in available chlorine), detects intestinal bacteria, the residual chlorine amount of mixed disinfecting pond water outlet.Its result sees table 1.
Table 1: embodiment 1 test-results
Embodiment 2:
Make up a second pond of the present invention and go out water disinfection system (referring to accompanying drawing 2), water flow is 10m
3/ d; Go out the pH value and the coliform count of water monitoring system, adjustment water outlet pH value, hypochlorous sodium and Potassium Bromide reaction product mixture are as the disinfection sanitizer of system; Concrete operations are following: in mixed reactor III, add 1 part of Youxiaolin through chloride sterilant throwing device I; In mixed reactor III, add 0.06 part of Potassium Bromide through bromine-containing compound or compsn device II again after dosing finishes, behind the hybrid reaction 1h, add and mix in the sterilization pool; Dosage is seen table 2 (in available chlorine), detects intestinal bacteria, the residual chlorine amount of mixed disinfecting pond water outlet.Its result sees table 2.
Table 2: embodiment 2 test-results
| Second pond goes out | Sterilizing agent adds | Initial coliform count | Sterilization back intestinal bacteria | Chlorine residue |
| Water pH value | Amount (mg/L) | (individual/L) | Number (individual/L) | (mg/L) |
| 6.0 | 4 | 1.9×10 6 | 7.2×10 2 | 2.6 |
| 6.5 | 4 | 1.9×10 6 | 9.1×10 2 | 2.2 |
| 7.0 | 4 | 1.9×10 6 | 1.8×10 3 | 1.9 |
| 7.5 | 12 | 1.9×10 6 | 3.3×10 3 | 1.6 |
| 8.0 | 12 | 1.9×10 6 | 4.0×10 3 | 1.0 |
| 8.5 | 12 | 1.9×10 6 | 6.9×10 3 | 0.7 |
| 9.0 | 12 | 1.9×10 6 | 9.5×10 3 | 0.1 |
Embodiment 3:
Make up a second pond of the present invention and go out water disinfection system (referring to accompanying drawing 2), water flow is 10m
3/ d; Go out the pH value and the coliform count of water monitoring system, adjustment water outlet pH value is with chlorinated lime and the Sodium Bromide reaction product mixture disinfection sanitizer as system; Concrete operations are following: in mixed reactor III, add 1 part of chlorinated lime through chloride sterilant throwing device I; In mixed reactor III, add 0.04 part of Sodium Bromide through bromine-containing compound or compsn device II again after dosing finishes, behind the hybrid reaction 1h, add and mix in the sterilization pool; Dosage is seen table 3 (in available chlorine), detects intestinal bacteria, the residual chlorine amount of mixed disinfecting pond water outlet.Its result sees table 3.
Table 3: embodiment 3 test-results
Embodiment 4:
Make up a second pond of the present invention and go out water disinfection system (referring to accompanying drawing 2), water flow is 10m
3/ d; Go out the pH value and the coliform count of water monitoring system, adjustment water outlet pH value is with chlorinated lime and the Potassium Bromide reaction product mixture disinfection sanitizer as system; Concrete operations are following: in mixed reactor III, add 1 part of chlorinated lime through chloride sterilant throwing device I; In mixed reactor III, add 0.05 part of Potassium Bromide through bromine-containing compound or compsn device II again after dosing finishes, behind the hybrid reaction 1h, add and mix in the sterilization pool; Dosage is seen table 4 (in available chlorine), detects intestinal bacteria, the residual chlorine amount of mixed disinfecting pond water outlet.Its result sees table 4.
Table 4: embodiment 4 test-results
Comparative Examples:
Second pond of the present invention goes out water disinfection system (referring to accompanying drawing 1), and water flow is 10m
3/ d goes out pH value, the coliform count of water monitoring system, adjustment water outlet pH value, and hypochlorous sodium is as the disinfection sanitizer of system, and dosage is seen table 5 (in available chlorine), coliform count, the residual chlorine amount of the pond water outlet of detection mixed disinfecting.Its result sees table 5.
Table 5: Comparative Examples test-results
Can be known by table 5: when adopting existing chloride sterilant disinfectant technology (Comparative Examples), the rising with water outlet pH reduces the chlorbenside microbial inoculum to colibacillary sterilization effect, and when water outlet pH>=7.5, coliform count is 1.5 * 10 after chloride sterilant sterilization
4Individual/L, exceed the regulation of " GB18918-2002 urban wastewater treatment firm pollutant emission standard "; When adopting second pond water outlet of the present invention to disinfect (embodiment), when water outlet pH=9.0, coliform count is 9.3 * 10 after the compound disinfectant sterilization
3Individual/L, National standard.Provable thus employing a kind of method that improves the wastewater disinfection treatment effect of the present invention can effectively improve the sterilization effect of chloride sterilant or reduce the usage quantity of chloride sterilant.
Claims (4)
1. wastewater disinfection treatment agent, form by the component that the quality proportioning is following:
1 part in chloride sterilant
0.01～0.5 part of bromine-containing compound;
Said chloride sterilant is Youxiaolin or chlorinated lime;
Said bromine-containing compound is one of following or its mixture: Sodium Bromide, Potassium Bromide.
2. wastewater disinfection treatment agent as claimed in claim 1 is characterized in that said treatment agent quality composition as follows:
1 part of Youxiaolin
0.01～0.1 part of Sodium Bromide.
3. the application of wastewater disinfection treatment agent as claimed in claim 1 in wastewater disinfection is handled.
4. application as claimed in claim 3 is characterized in that said wastewater disinfection treatment agent dosage in sewage is 1～20mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110215808A CN102328986A (en) | 2011-07-29 | 2011-07-29 | Finishing agent for disinfecting sewage and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110215808A CN102328986A (en) | 2011-07-29 | 2011-07-29 | Finishing agent for disinfecting sewage and application thereof |
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| Publication Number | Publication Date |
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| CN102328986A true CN102328986A (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110215808A Pending CN102328986A (en) | 2011-07-29 | 2011-07-29 | Finishing agent for disinfecting sewage and application thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6303038B1 (en) * | 1999-06-01 | 2001-10-16 | Albemarle Corporation | Solid mixtures of dialkylhydantoins and bromide ion sources for water sanitization |
| CN1535250A (en) * | 2001-06-29 | 2004-10-06 | 隆萨公司 | Mixtures of halogen-generating biocides, halogen stabilizers and nitrogen containing biocides |
-
2011
- 2011-07-29 CN CN201110215808A patent/CN102328986A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6303038B1 (en) * | 1999-06-01 | 2001-10-16 | Albemarle Corporation | Solid mixtures of dialkylhydantoins and bromide ion sources for water sanitization |
| CN1535250A (en) * | 2001-06-29 | 2004-10-06 | 隆萨公司 | Mixtures of halogen-generating biocides, halogen stabilizers and nitrogen containing biocides |
Non-Patent Citations (1)
| Title |
|---|
| 张婉枫: "添加剂对次氯酸钠溶液稳定性的研究", 《中国优秀硕士学位论文全文数据库工程技术I辑（月刊）》 * |
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Application publication date: 20120125 |