CN102351334A - Reverse osmosis membrane pulse sewage discharge method - Google Patents
Reverse osmosis membrane pulse sewage discharge method Download PDFInfo
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- CN102351334A CN102351334A CN2011101840258A CN201110184025A CN102351334A CN 102351334 A CN102351334 A CN 102351334A CN 2011101840258 A CN2011101840258 A CN 2011101840258A CN 201110184025 A CN201110184025 A CN 201110184025A CN 102351334 A CN102351334 A CN 102351334A
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- sewage
- reverse osmosis
- osmosis membrane
- pulse
- discharge method
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Abstract
The invention relates to the technical field of sewage treatment, in particular to a reverse osmosis membrane pulse sewage discharge method. The reverse osmosis membrane pulse sewage discharge method comprises the following steps of: (1) filtering sewage by using a filter; and (2) further filtering the sewage through reverse osmosis membrane pulse sewage discharge and performing pulse treatment simultaneously, wherein the pH value of the sewage is controlled to be between 3 and 9, and the environment temperature of the sewage treatment is controlled to be lower than 50 DEG C. The reverse osmosis membrane pulse sewage discharge method is good in treatment effect, energy-saving and environment-friendly, water is discharged continuously and can be directly recycled, and direct cost of treatment is lower than that of tap water.
Description
Technical field
The present invention relates to sewage disposal direct reuse technical field, specifically a kind of reverse osmosis membrane pulse blowdown method.
Background technology
Present physical treatment process generally preferably adopts filtering membrane to filter; The technology of existing industrial sewage recycling processing technique generally is: more medium filter → deep bed filter → ultrafiltration → security personnel's strainer → reverse osmosis membrane → water outlet; But reverse osmosis membrane is blocked easily after filtering after a while; Thereby influence filtering effect and speed; The sewage that causes discharging can not get handling in time; The existing method that overcomes the above problems is after filtering for some time reverse osmosis membrane to be recoiled → neutralizes → clean; Solve blocking problem; Such operation steps just must be stopped sewage disposal; It is just longer relatively that the sewage treatment process of discontinuity is handled the required time of identical sewage like this; Therefore the efficient of sewage disposal is not high; And also increase the workload of workman's cleaning and filtering film, technology is numerous and diverse; Cost is high; Aquifer yield is little.
Generally speaking, the COD that measures from sewage draining exit after 1 minute can increase by 3 times, and the COD that measures after 5 minutes is between 3000-5000COD, and aquifer yield reduces gradually, obviously influence the efficient of sewage disposal, and wastewater treatment efficiency is bad.
Summary of the invention
The present invention provides a kind of treatment effect good, continues uninterrupted water outlet, but and direct reuse, it is lower than tap water to handle priming cost, the reverse osmosis membrane pulse blowdown method of energy-conserving and environment-protective.
The present invention realizes through following technical proposals:
Reverse osmosis membrane pulse blowdown method is characterized in that may further comprise the steps:
(1), adopt strainer that sewage is filtered;
(2), sewage further filters through reverse osmosis membrane pulse blowdown;
More than the filtering burst process of carrying out simultaneously, the pH value of said sewage is controlled between the 3-9, the envrionment temperature of said sewage disposal is controlled at below 50 ℃.
Said pulse is controlled through PLC.
The chemical oxygen demand index of said sewage is 200-1000COD, and the chemical oxygen demand index is less than 50COD after handling.
The beneficial effect that the present invention brought is:
Among the present invention; Said sewage afterwards can be up to standard through strainer and reverse osmosis membrane pulse blowdown filtration; The chemical oxygen demand index of the sewage after the processing is less than 50COD; Can not pollute even enter in the environment yet; And the water to after handling carries out reuse, does light color or bleaches dyeing water such as can be used for; In filtering process, adopt pulse can solve the reverse osmosis membrane blocking problem effectively; And need not stop whole filtering process; Promptly saved the step of recoil, neutralization, cleaning; Therefore improve water rate greatly, and needed to add medicament in the process that recoils, neutralizes, cleans, increased COD easily; So power saving cost-saving; The tap water cost is lower than using, and treatment effect is good, has realized the purpose of energy-conserving and environment-protective; Level of automation improves, and has saved a large amount of manual operations, makes the entire sewage treating processes simpler; Make enterprise reduce network fee, and lucrative, reduce discharging enterprise from national requirements and require to reduce discharging the direction transformation.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further explain.
Fig. 1 is the synoptic diagram of reverse osmosis membrane pulse blowdown method according to the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is made further detailed description:
Embodiment as reverse osmosis membrane pulse blowdown method according to the invention comprises following operation:
(1), adopt strainer that sewage is filtered;
(2), sewage further filters through reverse osmosis membrane pulse blowdown;
More than the filtering burst process of carrying out simultaneously, the pH value of said sewage is controlled between the 3-9, the envrionment temperature of said sewage disposal is controlled at below 50 ℃.Said sewage can not pollute even enter in the environment through can be up to standard after strainer and the filtering membrane filtration yet, and the water after handling is carried out reuse, perhaps bleaches dyeing water such as can be used for doing light color; In filtering process, adopt pulse can solve the reverse osmosis membrane blocking problem effectively; And need not stop whole filtering process; Promptly saved the step of recoil, neutralization, cleaning; Therefore improve water rate greatly, and needed to add medicament in the process that recoils, neutralizes, cleans, increased COD easily; So power saving cost-saving; The tap water cost is lower than using, and treatment effect is good, has realized the purpose of energy-conserving and environment-protective; The pH value of said sewage and the control of the envrionment temperature of sewage disposal are in order to guarantee that reverse osmosis membrane is in one to filtering in the optimum environment, prolongs its work-ing life.
In the present embodiment, said pulse is controlled through PLC.Level of automation improves, and has saved a large amount of manual operations, makes the entire sewage treating processes simpler.
In the present embodiment, the chemical oxygen demand index of said sewage is 200-1000COD, and the chemical oxygen demand index is less than 50COD after handling.Can be according to the frequency of the COD target setting pulse of said sewage, and then make blocking-proof result better, different sewage adopts the different pulse frequency, makes its suitability wider.
Claims (3)
1. reverse osmosis membrane pulse blowdown method is characterized in that may further comprise the steps:
(1), adopt strainer that sewage is filtered;
(2), sewage further filters through reverse osmosis membrane pulse blowdown;
More than the filtering burst process of carrying out simultaneously, the pH value of said sewage is controlled between the 3-9, the envrionment temperature of said sewage disposal is controlled at below 50 ℃.
2. reverse osmosis membrane pulse blowdown method as claimed in claim 1 is characterized in that said pulse controls through PLC.
3. reverse osmosis membrane pulse blowdown method as claimed in claim 1, the chemical oxygen demand index that it is characterized in that said sewage is 200-1000COD, the chemical oxygen demand index is less than 50COD after handling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101840258A CN102351334A (en) | 2011-07-01 | 2011-07-01 | Reverse osmosis membrane pulse sewage discharge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101840258A CN102351334A (en) | 2011-07-01 | 2011-07-01 | Reverse osmosis membrane pulse sewage discharge method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102351334A true CN102351334A (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101840258A Pending CN102351334A (en) | 2011-07-01 | 2011-07-01 | Reverse osmosis membrane pulse sewage discharge method |
Country Status (1)
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| CN (1) | CN102351334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908897A (en) * | 2013-01-04 | 2014-07-09 | 天津工业大学 | Separation membrane operation method and system applying separation membrane operation method |
| CN113603262A (en) * | 2021-08-20 | 2021-11-05 | 东华大学 | Wastewater near-zero discharge process of gas field flow field synergistic osmosis membrane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6349835B1 (en) * | 1998-07-17 | 2002-02-26 | Polymem | Water treatment installation |
| CN1613786A (en) * | 2004-10-28 | 2005-05-11 | 王建中 | Pretreating method for reversing asmose seawater desalinating pulsing electromagnetic field |
| CN201037121Y (en) * | 2007-04-04 | 2008-03-19 | 深圳市英尼克电器有限公司 | Long-acting type water purifier |
| CN101596408A (en) * | 2009-03-30 | 2009-12-09 | 深圳市英尼克电器有限公司 | All-weather water saving reverse osmosis device and method thereof |
| CN101698523A (en) * | 2009-12-01 | 2010-04-28 | 陆秀英 | Method for applying molded carbon in treatment of industrial waste water by electroflocculation |
-
2011
- 2011-07-01 CN CN2011101840258A patent/CN102351334A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6349835B1 (en) * | 1998-07-17 | 2002-02-26 | Polymem | Water treatment installation |
| CN1613786A (en) * | 2004-10-28 | 2005-05-11 | 王建中 | Pretreating method for reversing asmose seawater desalinating pulsing electromagnetic field |
| CN201037121Y (en) * | 2007-04-04 | 2008-03-19 | 深圳市英尼克电器有限公司 | Long-acting type water purifier |
| CN101596408A (en) * | 2009-03-30 | 2009-12-09 | 深圳市英尼克电器有限公司 | All-weather water saving reverse osmosis device and method thereof |
| CN101698523A (en) * | 2009-12-01 | 2010-04-28 | 陆秀英 | Method for applying molded carbon in treatment of industrial waste water by electroflocculation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908897A (en) * | 2013-01-04 | 2014-07-09 | 天津工业大学 | Separation membrane operation method and system applying separation membrane operation method |
| CN113603262A (en) * | 2021-08-20 | 2021-11-05 | 东华大学 | Wastewater near-zero discharge process of gas field flow field synergistic osmosis membrane |
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Application publication date: 20120215 |