CN110564516A - neutral cleaning agent for cleaning MBR system - Google Patents

neutral cleaning agent for cleaning MBR system Download PDF

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Publication number
CN110564516A
CN110564516A CN201910853812.3A CN201910853812A CN110564516A CN 110564516 A CN110564516 A CN 110564516A CN 201910853812 A CN201910853812 A CN 201910853812A CN 110564516 A CN110564516 A CN 110564516A
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CN
China
Prior art keywords
cleaning agent
neutral
cleaning
mbr system
set forth
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.)
Pending
Application number
CN201910853812.3A
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Chinese (zh)
Inventor
张金山
夏志先
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Original Assignee
SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Publication date
Application filed by SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd filed Critical SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority to CN201910853812.3A priority Critical patent/CN110564516A/en
Publication of CN110564516A publication Critical patent/CN110564516A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/008—Polymeric surface-active agents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/06—Phosphates, including polyphosphates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/221—Mono, di- or trisaccharides or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/30—Amines; Substituted amines ; Quaternized amines

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)

Abstract

the invention provides a neutral cleaning agent for cleaning an MBR system, which is characterized by being prepared from the following components in parts by mass: 5-25 parts of metaphosphate; 5-20 parts of gluconate; 10-25 parts of polyalcohol amine; 0.01-1 of fatty alcohol-polyoxyethylene ether; and 65-90 parts of water. The pH of the cleaning agent is neutral, so that the pH of the biochemical pool is not influenced; meanwhile, the cleaning agent does not contain sterilization components, and does not cause any negative effect on a biochemical system. But can effectively remove pollutants such as calcium carbonate scale, organic matters and the like on the MBR membrane, and the cleaning effect is excellent.

Description

Neutral cleaning agent for cleaning MBR system
Technical Field
The invention relates to the field of cleaning agents, in particular to a neutral cleaning agent for cleaning an MBR system.
background
at present, MBR can replace a biochemical secondary sedimentation tank, and the quality of effluent is stable, and the technology is more and more mature along with the technology. MBR systems are also becoming more widely used. However, in the using process, because the water quality of a water source is complex, particularly for an immersed MBR system used for deep treatment of landfill leachate, the system is quickly polluted and blocked due to high organic matter content and high calcium and magnesium hardness of water, and the problems of serious reduction of water yield and the like occur. After the water amount is reduced, cleaning is carried out, and the cleaning method is generally divided into online cleaning and offline cleaning.
The off-line cleaning is to disassemble the system pipeline and then lift the MBR device, and then put the system pipeline into a cleaning tank for chemical cleaning, and the method needs to be provided with a special cleaning tank, and meanwhile, the pipeline needs to be disassembled and lifted, so that the workload is large. And the online cleaning is to directly add a cleaning agent with a certain concentration to the water producing side of the MBR membrane and remove pollutants on the membrane surface through natural extravasation. The method is much more convenient than off-line cleaning, but because the cleaning process is in a biochemical pool, some cleaning agents may have adverse effects on biochemical systems.
disclosure of Invention
the invention aims to overcome the defects and provides a cleaning agent suitable for an MBR system.
the invention provides a neutral cleaning agent for cleaning an MBR system, which is characterized by being prepared from the following components in parts by mass:
Further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that: the metaphosphate is one or more selected from alkali metal or alkaline earth metal salts of metaphosphate.
Further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that: the gluconate is selected from one or more of alkali metal or alkaline earth metal salts of gluconic acid.
further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that: the polyalcohol amine is one or more selected from alkylene oxide and ammonia reaction products.
Further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that: the polyalcohol amine is one or more selected from diethanolamine, triethanolamine, dipropanolamine, tripropanolamine, dioctanolamine and trioctalamine.
Further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that: the fatty alcohol-polyoxyethylene ether is one or more selected from fatty alcohol-polyoxyethylene ether with average molecular weight of 100-3000.
further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that:
further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that:
Further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that: the specific preparation process is as follows:
Sequentially adding the components into water at normal temperature, and uniformly mixing the components to obtain the target product.
Further, the neutral cleaning agent for cleaning the MBR system, provided by the invention, is characterized in that:
Uniformly mixing the cleaning agent with water for use;
The mass ratio of the cleaning agent to water is 1-3: 100.
The invention has the following functions and effects:
the invention relates to a neutral cleaning agent for cleaning an MBR system, wherein the pH of the cleaning agent is neutral, and the pH of a biochemical pool cannot be influenced; meanwhile, the cleaning agent does not contain sterilization components, and does not cause any negative effect on a biochemical system. But can effectively remove pollutants such as calcium carbonate scale, organic matters and the like on the MBR membrane. The cleaning effect is excellent. Is a novel MBR cleaning agent.
in the invention, the complex effect of the gluconate and the metaphosphate on the calcium carbonate, the magnesium carbonate and the metal oxide is good, and the calcium carbonate and the magnesium carbonate can be completely stripped by soaking for a certain time during on-line cleaning; in addition, the polyalcohol amine and the fatty alcohol-polyoxyethylene ether can effectively strip and dissolve organic matters on the surface of the membrane and can dissolve oil pollutants on the surface of the water membrane at the same time, and the purposes of cleaning MBR system pollutants and not influencing a biochemical system are finally achieved through the compounding synergistic effect of the raw materials.
In addition, the cleaning agent is suitable for cleaning an MBR system on line.
Detailed Description
example 1
the cleaning agent 1# for neutral cleaning of the MBR system provided in this embodiment uses sodium hexametaphosphate, sodium gluconate, triethanolamine, fatty alcohol-polyoxyethylene ether and water as raw materials, and the mass ratio of each component is 10: 5: 15: 0.5: 80.
The preparation process comprises the following steps:
Firstly, adding water at normal temperature, slowly adding sodium hexametaphosphate, sodium gluconate, triethanolamine and fatty alcohol-polyoxyethylene ether (AEO9) in sequence, and fully stirring to obtain the product.
The using method comprises the following steps:
the cleaning concentration is 1% -3%.
the test method comprises the following steps: 1# of cleaning agent 1, (B) 3# of cleaning agent 1, (C) 3% of sodium gluconate, (D) 3% of sodium metaphosphate, (E) 3% of triethanolamine, (F) 3% of fatty alcohol-polyoxyethylene ether-9, (G) 1.5% of sodium gluconate + 1.5% of triethanolamine, (H) 1.5% of sodium gluconate + 1.5% of fatty alcohol-polyoxyethylene ether-9, (I) 1% of metaphosphate + 1% of triethanolamine + 1% of fatty alcohol-polyoxyethylene ether-9; the results of cleaning the MRB systems with the same degree of contamination (i.e., after treating the same water quality and the same treatment frequency) for the same cleaning time and manner are shown below:
Numbering A B C D E F
Cleaning rate 95％ 98％ 71％ 75％ 68％ 77％
Numbering G H I
Cleaning rate 79％ 81％ 88％
Example 2
the cleaning agent 2# for neutral cleaning of the MBR system provided in this embodiment uses sodium hexametaphosphate, sodium gluconate, triethanolamine, fatty alcohol polyoxyethylene ether (AEO3) and water as raw materials, and the mass ratio of each component is 15: 10: 20: 0.1: 80.
the preparation process comprises the following steps:
firstly, adding water at normal temperature, slowly adding sodium hexametaphosphate, sodium gluconate, triethanolamine and fatty alcohol-polyoxyethylene ether in sequence by using a reaction kettle, and fully stirring to obtain the product.
The using method comprises the following steps:
the cleaning concentration is 1% -3%.
The test method comprises the following steps: the cleaning agent comprises (A) 2% of cleaning agent 2#, (B) 3% of cleaning agent 2#, (C) 3% of sodium gluconate, (D) 3% of sodium metaphosphate, (E) 3% of triethanolamine, (F) 2% of fatty alcohol-polyoxyethylene ether-3, (G) 1.5% of sodium gluconate + 1.5% of triethanolamine, (H) 2% of sodium gluconate + 2% of fatty alcohol-polyoxyethylene ether-3, (I) 2% of metaphosphate + 2% of triethanolamine + 2% of fatty alcohol-polyoxyethylene ether-3; the results of cleaning the MRB systems with the same degree of contamination (i.e., after treating the same water quality and the same treatment frequency) for the same cleaning time and manner are shown below:
example 3
the cleaning agent 3# for neutral cleaning of the MBR system, provided by this embodiment, uses sodium hexametaphosphate, sodium gluconate, triethanolamine, diethanolamine, AEO3, AEO20, and water as raw materials, and the mass ratio of each component is 15: 10: 20: 10: 0.05: 0.1: 70.
The preparation process comprises the following steps:
Firstly, using a reaction kettle, adding water at normal temperature, slowly adding sodium hexametaphosphate, sodium gluconate, triethanolamine, diethanolamine, AEO3 and AEO20 in sequence, and fully stirring to obtain the product.
the using method comprises the following steps:
The cleaning concentration is 1% -3%.
The cleaning rate reaches 91-96%.
Example 4
the cleaning agent 4# for neutral cleaning of the MBR system, provided by this embodiment, uses sodium hexametaphosphate, sodium gluconate, diethanolamine, AEO20 and water as raw materials, and the mass ratio of each component is 15: 15: 10: 1: 75.
the preparation process comprises the following steps:
Firstly, using a reaction kettle, adding water at normal temperature, slowly adding sodium hexametaphosphate, sodium gluconate, diethanolamine and AEO20 in sequence, and fully stirring to obtain the product.
The using method comprises the following steps:
the cleaning concentration is 1% -3%.
The cleaning rate reaches 90-95%.
example 5
the cleaning agent 5# for neutral cleaning of the MBR system provided in this embodiment uses sodium hexametaphosphate, sodium gluconate, dioctanolamine, AEO8 and water as raw materials, and the mass ratio of each component is 15: 25: 15: 1: 90.
The preparation process comprises the following steps:
firstly, using a reaction kettle, adding water at normal temperature, slowly adding sodium hexametaphosphate, sodium gluconate, dioctanolamine and AEO8 in sequence, and fully stirring to obtain the product.
The using method comprises the following steps:
The cleaning concentration is 1% -3%.
The cleaning rate reaches 94-98%.

Claims (10)

1. the neutral cleaning agent for cleaning the MBR system is characterized by being prepared from the following components in parts by mass:
2. the neutral MBR system cleaning agent as set forth in claim 1, wherein:
The metaphosphate is selected from one or more of alkali metal or alkaline earth metal salts of metaphosphoric acid.
3. The neutral MBR system cleaning agent as set forth in claim 1, wherein:
The gluconate is selected from one or more of alkali metal or alkaline earth metal salts of gluconic acid.
4. The neutral MBR system cleaning agent as set forth in claim 1, wherein:
the polyalcohol amine is one or more selected from alkylene oxide and ammonia reaction products.
5. The neutral MBR system cleaning agent as set forth in claim 1, wherein:
the polyalcohol amine is one or more selected from diethanolamine, triethanolamine, dipropanolamine, tripropanolamine, dioctanolamine and trioctalamine.
6. the neutral MBR system cleaning agent as set forth in claim 1, wherein:
The fatty alcohol-polyoxyethylene ether is one or more selected from fatty alcohol-polyoxyethylene ether with average molecular weight of 100-3000.
7. The neutral MBR system cleaning agent as set forth in claim 1, wherein:
8. The neutral MBR system cleaning agent as set forth in claim 1, wherein:
9. The neutral cleaning agent for cleaning an MBR system according to claim 1, which is prepared by the following specific process:
Sequentially adding the components into water at normal temperature, and uniformly mixing the components to obtain the target product.
10. The neutral MBR system cleaning agent as set forth in claim 1, wherein:
Uniformly mixing the cleaning agent with water for use;
the mass ratio of the cleaning agent to water is 1-3: 100.
CN201910853812.3A 2019-09-10 2019-09-10 neutral cleaning agent for cleaning MBR system Pending CN110564516A (en)

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CN201910853812.3A CN110564516A (en) 2019-09-10 2019-09-10 neutral cleaning agent for cleaning MBR system

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110554147A (en) * 2019-09-10 2019-12-10 上海丰信环保科技有限公司 method for comparing cleaning effect of cleaning agent on unknown scale sample in reverse osmosis system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5599306A (en) * 1979-01-26 1980-07-29 Nitto Electric Ind Co Ltd Detergent composition for washing membrane surface
CN101069817A (en) * 2007-06-08 2007-11-14 江南大学 Micro-filtering or super-filtering film regenerating agent and preparing method
CN106861444A (en) * 2017-03-27 2017-06-20 嘉兴可珑清洁科技有限公司 A kind of micro-filtration, milipore filter regenerative agent and preparation method thereof
CN108607367A (en) * 2018-05-14 2018-10-02 广州迪奕科环保科技有限公司 Low vacuolar membrane cleaning agent
CN108939926A (en) * 2018-09-03 2018-12-07 成都水医生化学品科技有限责任公司 Cleaning agents of membrane and its preparation and application

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5599306A (en) * 1979-01-26 1980-07-29 Nitto Electric Ind Co Ltd Detergent composition for washing membrane surface
CN101069817A (en) * 2007-06-08 2007-11-14 江南大学 Micro-filtering or super-filtering film regenerating agent and preparing method
CN106861444A (en) * 2017-03-27 2017-06-20 嘉兴可珑清洁科技有限公司 A kind of micro-filtration, milipore filter regenerative agent and preparation method thereof
CN108607367A (en) * 2018-05-14 2018-10-02 广州迪奕科环保科技有限公司 Low vacuolar membrane cleaning agent
CN108939926A (en) * 2018-09-03 2018-12-07 成都水医生化学品科技有限责任公司 Cleaning agents of membrane and its preparation and application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110554147A (en) * 2019-09-10 2019-12-10 上海丰信环保科技有限公司 method for comparing cleaning effect of cleaning agent on unknown scale sample in reverse osmosis system

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Application publication date: 20191213