CN102512966A - Reverse osmosis membrane pollution prevention and control method - Google Patents

Reverse osmosis membrane pollution prevention and control method Download PDF

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CN102512966A
CN102512966A CN2011103945790A CN201110394579A CN102512966A CN 102512966 A CN102512966 A CN 102512966A CN 2011103945790 A CN2011103945790 A CN 2011103945790A CN 201110394579 A CN201110394579 A CN 201110394579A CN 102512966 A CN102512966 A CN 102512966A
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reverse osmosis
membrane
osmosis membrane
system
water
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CN2011103945790A
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包进锋
洪海云
陈甘
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杭州求是膜技术有限公司
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Abstract

The invention discloses a reverse osmosis membrane pollution prevention and control method. When the water yield of a reverse osmosis membrane system is lower than 10 percent of the initial water yield or the pressure difference of a reverse osmosis membrane assembly is greater than 0.35MPa, a reverse osmosis membrane is flushed and cleaned through one method or the combination of a plurality of methods of positive membrane surface flushing, reverse membrane surface flushing, positive membrane surface chemical cleaning, reverse membrane surface chemical cleaning, positive gas membrane surface gas cleaning or reverse membrane surface gas cleaning through manual or automatic control, so the water yield of the reverse osmosis membrane system is recovered to more than 99 percent of the initial water yield, and the pressure difference is smaller than 0.25MPa. The reverse osmosis membrane pollution prevention and control method has the advantages that the serious pollution of a rolled reverse osmosis membrane is effectively avoided, and the stable operation of the system is ensured. According to the reverse osmosis membrane pollution prevention and control method, the chemical cleaning frequency of the system can be reduced, the service life of the reverse osmosis membrane is prolonged, and the operation cost of the system is reduced.

Description

一种反渗透膜污染防治的方法 One kind of a reverse osmosis membrane method pollution control

技术领域 FIELD

[0001] 本发明涉及废水处理方法,尤其涉及一种反渗透膜污染防治的方法。 [0001] The present invention relates to a method for treating wastewater, particularly to a method for pollution control of the reverse osmosis membrane. 背景技术 Background technique

[0002] 双膜法(超滤+反渗透)是印染废水深度处理回用的一个重要方法。 [0002] bis membrane (UF + RO) is an important method of recycling the dyeing treatment of wastewater. 反渗透装置产水的过程是对废水中的无机离子和有机物进行浓缩的过程。 Reverse osmosis water production process is the process of wastewater inorganic ions, and the organics concentrated. 一般反渗透装置是六芯装,两段排列的方式,即相当于12支膜串联,因此原水至最后一致膜组件时的浓度已较高。 Usually the core mounted six reverse osmosis device, arranged in two ways, i.e., corresponding to film 12 in series, so the concentration of the raw water to the membrane module is consistent with the final high. 因此高浓度的有机物及无机离子极容易在该膜组件表面沉积,所以膜被污染的可能性也最大, 这种污染主要集中在最后几支膜元件。 Thus a high concentration of organic substances and inorganic ions very easily deposited on the surface of the membrane, the membrane is greatest possibility of contamination, such contamination mainly concentrated in the final membrane element. 另外,双膜法系统一般设有气浮、砂滤等预处理设备对原水进行预处理,之后才能进入双膜法系统。 Further, the membrane separation system is generally provided with flotation, sand filtration apparatus pretreatment pretreatment of raw water, then in order to enter the membrane separation system. 但是如果进水水质波动较大,特别是水中胶体和悬浮物等较多时极易造成反渗透膜组件的流道堵塞,这时的流道堵塞主要发生在反渗透系统中的前面的几支膜组件上,造成的的现象就是系统的压差急剧上升。 However, if the water quality fluctuations, and in particular a colloidal suspension in water, etc. are more easily caused when the reverse osmosis membrane clogging the flow channel, the flow channel is blocked at this time mainly in front of the reverse osmosis system few pieces film on assembly, the phenomenon is caused by a sharp rise in pressure systems. 出现的后果是导致系统产水量下降,如果长期运行,反渗透膜前后的压力差将增加,使膜组件造成望远镜现象,使膜组件性能造成不可恢复的损坏,从而导致系统瘫痪。 Consequences that lead to decreased water production system, if the long-running, before and after the reverse osmosis membrane pressure difference will increase, causing the membrane telescope phenomenon, the membrane performance irreversible damage, leading to paralysis of the system.

发明内容 SUMMARY

[0003] 本发明的目的是针对现有技术中的不足,提出了一种反渗透膜污染防治的方法。 [0003] The object of the present invention is directed to the deficiency in the prior art, it is proposed a method of reverse osmosis membrane pollution prevention.

[0004] 反渗透膜污染防治的方法是:当反渗透膜系统产水量低于初始产水量的10%或反渗透膜组件的压差大于0. 35MPa时,人工或自动控制,通过正向冲洗膜表面、反向冲洗膜表面、正向化学清洗膜表面、反向化学清洗膜表面、正向气体清洗膜表面或反向气体清洗膜表面中的一种或多种组合,对反渗透膜进行冲洗、清洗,使反渗透膜系统产水量恢复至初始产水量的99%以上,压差小于0. 25MPa。 Method [0004] a reverse osmosis membrane is that pollution control: when the reverse osmosis membrane water production system is less than 10% of the initial yield pressure water or reverse osmosis membrane module is larger than 0. 35MPa, manually or automatically controlled, through a forward flushing membrane surface, the back flush the membrane surface, the forward surface of the membrane chemical cleaning, chemical cleaning of the reverse surface of the film, the film surface of the forward or reverse cleaning gas purge gas film surface of one or more combinations of the reverse osmosis membrane washing, cleaning water production system of reverse osmosis membrane recovered to 99% of the initial product water, the pressure is less than 0. 25MPa.

[0005] 所述的正向冲洗膜表面是冲洗水从正向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行冲洗,进水压力小于0. 5MPa,单支膜管的进水流量6 -8m3/h,冲洗水返回水箱循环使用。 [0005] Forward flushing of the membrane surface is to flush water into the reverse osmosis membrane system from the forward, reverse osmosis membrane system flushed through the pump and a 5 micron bag filter, the water pressure of less than 0. 5MPa, single branch water flow membrane tubes 6 -8m3 / h, the tank rinsing water recycling return. 所述的反向冲洗膜表面是冲洗水从反向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行冲洗,进水压力小于0. 5MPa,单支膜管的进水流量6 — 8m3/h,冲洗水返回水箱循环使用。 The backflushing the membrane surface is flush water from entering the reverse osmosis membrane system for flushing the reverse osmosis membrane and through the pump system 5 micron bag filter, the water pressure of less than 0. 5MPa, single membrane tube the influent flow 6 - 8m3 / h, the tank rinsing water recycling return.

[0006] 所述的正向化学清洗膜表面是在清洗水箱内配置清洗药剂,通过水泵将清洗药剂从正向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行化学清洗,进水压力小于0.5MPa,单支膜管的进水流量6 — 8m3/h,清洗水返回水箱循环使用。 [0006] The chemical cleaning of the membrane surface is forward in the washing water tank arranged cleaning agent, the cleaning agent through the pump from the forward into the reverse osmosis membrane system, through the pump and the bag filter 5 micron reverse osmosis membrane system chemical cleaning, water pressure is less than 0.5MPa, a single membrane influent flow pipe 6 - 8m3 / h, the washing water is returned to recycle tank. 所述的反向化学清洗膜表面是在清洗水箱内配置清洗药剂,通过水泵将清洗药剂从反向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行化学清洗,进水压力小于0. 5MPa,单支膜管的进水流量6 - 8m3/h,清洗水返回水箱循环使用。 Chemical cleaning the membrane of the reverse surface of the cleaning-water tank disposed in the cleaning agent, the cleaning agent through the pump from entering the reverse osmosis membrane system, chemical cleaning of the reverse osmosis membrane system through the pump and the bag filter 5 microns , water pressure is less than 0. 5MPa, single membrane influent flow pipe 6 - 8m3 / h, the washing water is returned to recycle tank.

[0007] 所述的正向气体清洗膜表面是通过洁净的压缩气体,从正向进入反渗透膜系统, 进气压小于0. 5MPa。 [0007] The forward surface of membrane cleaning gas by clean compressed gas from the forward into the reverse osmosis membrane system, the intake pressure is less than 0. 5MPa. 所述的反向气体清洗膜表面是通过洁净的压缩气体,从反向进入反渗透膜系统,进气压小于0. 5MPa。 The reverse purge gas through the membrane surface clean compressed gas from entering the reverse osmosis membrane system, the intake pressure is less than 0. 5MPa. [0008] 所述的反渗透膜结构形式是卷式结构。 [0008] The structure of the reverse osmosis membrane is a spiral wound structure.

[0009] 本发明彻底解决了印染废水中未降解的染料有机物以及大量无机离子对反渗透膜污染,使系统运行稳定,使运行成本降低,具有良好的经济和社会效益。 [0009] The present invention solve the dyeing wastewater undegraded organic dye and a large number of inorganic ion contamination of a reverse osmosis membrane, so that the system is stable, so that operating costs, with good economic and social benefits.

附图说明 BRIEF DESCRIPTION

[0010] 图1是本发明的反渗透膜系统流程图。 [0010] FIG. 1 is a flowchart of a reverse osmosis membrane system of the present invention. 具体实施方式 Detailed ways

[0011] 反渗透膜污染防治的方法是:当反渗透膜系统产水量低于初始产水量的10%或反渗透膜组件的压差大于0. 35MPa时,人工或自动控制,通过正向冲洗膜表面、反向冲洗膜表面、正向化学清洗膜表面、反向化学清洗膜表面、正向气体清洗膜表面或反向气体清洗膜表面中的一种或多种组合,对反渗透膜进行冲洗、清洗,使反渗透膜系统产水量恢复至初始产水量的99%以上,压差小于0. 25MPa。 Method [0011] a reverse osmosis membrane is that pollution control: when the reverse osmosis membrane water production system is less than 10% of the initial yield pressure water or reverse osmosis membrane module is larger than 0. 35MPa, manually or automatically controlled, through a forward flushing membrane surface, the back flush the membrane surface, the forward surface of the membrane chemical cleaning, chemical cleaning of the reverse surface of the film, the film surface of the forward or reverse cleaning gas purge gas film surface of one or more combinations of the reverse osmosis membrane washing, cleaning water production system of reverse osmosis membrane recovered to 99% of the initial product water, the pressure is less than 0. 25MPa.

[0012] 所述的正向冲洗膜表面是冲洗水从正向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行冲洗,进水压力小于0. 5MPa,单支膜管的进水流量6 -8m3/h,冲洗水返回水箱循环使用。 [0012] Forward flushing of the membrane surface is to flush water into the reverse osmosis membrane system from the forward, reverse osmosis membrane system flushed through the pump and a 5 micron bag filter, the water pressure of less than 0. 5MPa, single branch water flow membrane tubes 6 -8m3 / h, the tank rinsing water recycling return. 所述的反向冲洗膜表面是冲洗水从反向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行冲洗,进水压力小于0. 5MPa,单支膜管的进水流量6 - 8m3/h,冲洗水返回水箱循环使用。 The backflushing the membrane surface is flush water from entering the reverse osmosis membrane system for flushing the reverse osmosis membrane and through the pump system 5 micron bag filter, the water pressure of less than 0. 5MPa, single membrane tube the influent flow 6 - 8m3 / h, the tank rinsing water recycling return. 冲洗时间5 - 30分钟。 Rinse time 5--30 minutes.

[0013] 所述的正向化学清洗膜表面是在清洗水箱内配置清洗药剂,通过水泵将清洗药剂从正向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行化学清洗,进水压力小于0.5MPa,单支膜管的进水流量6 — 8m3/h,清洗水返回水箱循环使用。 [0013] The chemical cleaning of the membrane surface is forward in the washing water tank arranged cleaning agent, the cleaning agent through the pump from the forward into the reverse osmosis membrane system, through the pump and the bag filter 5 micron reverse osmosis membrane system chemical cleaning, water pressure is less than 0.5MPa, a single membrane influent flow pipe 6 - 8m3 / h, the washing water is returned to recycle tank. 所述的反向化学清洗膜表面是在清洗水箱内配置清洗药剂,通过水泵将清洗药剂从反向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行化学清洗,进水压力小于0. 5MPa,单支膜管的进水流量6 - 8m3/h,清洗水返回水箱循环使用。 Chemical cleaning the membrane of the reverse surface of the cleaning-water tank disposed in the cleaning agent, the cleaning agent through the pump from entering the reverse osmosis membrane system, chemical cleaning of the reverse osmosis membrane system through the pump and the bag filter 5 microns , water pressure is less than 0. 5MPa, single membrane influent flow pipe 6 - 8m3 / h, the washing water is returned to recycle tank.

[0014] 正、反向清洗时采用分段的方式进行,即对第一段进行化学清洗时,化学清洗也不会进入第二段,防止第一段洗出的污染物进入第二段,对第二段的组件进行污染。 When [0014] n, piecewise manner reverse cleaning, i.e., the first stage of the chemical cleaning, chemical cleaning does not enter the second segment, the first segment to prevent washing out contaminants from entering the second section, components of the second paragraph of pollution. 分段化学清洗装置主要由水泵,水箱,加药装置以及相应的管阀件组成,化学清洗时,可对第一段和第二段分别进行化学清洗,清洗时间5 - 30分钟。 Subsection chemical cleaning device consists of the pump, water tank, dosing device and the corresponding valve member composition, chemical cleaning of the first and second sections, respectively, chemical cleaning, cleaning time 5 - 30 Minutes.

[0015] 所述的正向气体清洗膜表面是通过洁净的压缩气体,从正向进入反渗透膜系统, 进气压小于0. 5MPa。 [0015] The forward surface of membrane cleaning gas by clean compressed gas from the forward into the reverse osmosis membrane system, the intake pressure is less than 0. 5MPa. 所述的反向气体清洗膜表面是通过洁净的压缩气体,从反向进入反渗透膜系统,进气压小于0. 5MPa。 The reverse purge gas through the membrane surface clean compressed gas from entering the reverse osmosis membrane system, the intake pressure is less than 0. 5MPa.

[0016] 所述的反渗透膜结构形式是卷式结构。 Reverse osmosis of the structure [0016] is a roll film structure.

[0017] 图1中:一段正向冲洗进或一段正向清洗进1、一段正向气洗进2、一段反向冲洗出或一段反向清洗出3、一段反向冲洗进或一段反向清洗进4、一段反向气洗进5、一段正向冲洗出或一段正向清洗出6、二段正向冲洗进或二段正向清洗进7、二段正向气洗进8、二段反向冲洗出或二段反向清洗出9、二段反向冲洗进或二段反向清洗进10、二段反向气洗进11、 二段正向冲洗出或二段正向清洗出12、浓水排放阀13、进水阀14、段间阀15。 In [0017] FIG 1: section of the forward section of the forward cleaning or rinsing the inlet 1, the forward section 2 into the air wash, the back flush period or a period of 3 backwashing, or some period into reverse backflushing clean the inlet 4, a section of reverse air wash inlet 5, the forward section of the flush or forward section 6 is purged, the forward Sec Sec forward cleaning or rinsing the intake 7, the forward two-stage air wash inlet 8, two or flushed out by reverse purged 9 Sec reverse, forward or back flush Sec Sec backwashing inlet 10, a reverse two-stage air wash inlet 11, Sec Sec forward or forward flush out cleaning 12 the concentrated water discharge valve 13, inlet valve 14, interstage valve 15.

[0018] 一反渗透装置,分为两段排列,第一段M支膜壳,第二段18支膜壳,两段均为6芯装,经过几天运行后,产水量与初始时相比降低了9%,反渗透膜组件的压差达到0. 40MPa。 [0018] a reverse osmosis unit, divided into two sections are arranged, the first section supporting shell membrane M, second paragraph membrane shell 18, two core 6 are installed, after several days of operation, the initial phase and water production 9% lower than the differential pressure reverse osmosis membrane module reaches 0. 40MPa. 首先对第一段进行正向冲洗:在水箱内放入反渗透的产水,打开阀门1和阀门6,打开气洗阀2,控制进气压力为0. 2MPa,关闭其他阀门,开启水泵,控制水泵的流量在144 一192 m3/ h,进水压力为0. 3MPa,冲洗5 — 15分钟;然后对第一段进行反向冲洗:在水箱内放入反渗透的产水,打开阀门3和阀门4,打开反向气洗阀5,控制进气压力为0. 2MPa,关闭其他阀门, 开启水泵,控制水泵的流量在144 - 192 m3/h,进水压力为0. 3MPa,冲洗5 — 15分钟;然后对第二段进行正向冲洗:在水箱内放入反渗透的产水,打开阀门7和阀门12,打开气洗阀8, 控制进气压力为0. 2MPa,关闭其他阀门,开启水泵,控制水泵的流量在108 — 144 m3/h,进水压力为0. 3MPa,冲洗5 - 15分钟;然后对第二段进行反向冲洗:在水箱内放入反渗透的产水,打开阀门9和阀门10,打开气洗阀11,控制进气压力为0. 2MP First, the first stage is forward flushed: placed in the tank of the reverse osmosis product water, open the valve 1 and valve 6, air wash valve 2 is opened, the intake pressure is controlled 0. 2MPa, other valves closed, the pump is turned on, 144 control the pump flow in a 192 m3 / h, inlet pressure 0. 3MPa, rinsed 5--15 min; then reverse flush of the first stage: reverse osmosis product water placed in the tank, the valve 3 is opened and valves 4, 5 open reverse purge valve controlling the intake pressure of 0. 2MPa, other valves closed, the pump is turned on, the control flow pump in 144 - 192 m3 / h, inlet pressure 0. 3MPa, rinsed 5 --15 min; then flushing the forward direction of the second section: placed in the tank of the reverse osmosis product water, the valve 7 is opened and the valve 12, purge valve 8 is opened, the intake pressure is controlled 0. 2MPa, other valves closed , the pump is turned on, controls the pump flow at 108 - 15 minutes - 144 m3 / h, inlet pressure 0. 3MPa, rinsed 5; then reverse flush of the second segment: reverse osmosis product water in the tank into opening the valve 9 and the valve 10, purge valve 11 is opened, the intake pressure is controlled 0. 2MP a,关闭其他阀门,开启水泵,控制水泵的流量在108 - 144 m3/h,进水压力为0. 3MPa,冲洗5 — 15分钟;然后对第一段进行正向清洗:在水箱内放入反渗透的产水,并配置一定浓度的清洗药剂,打开阀门1 和阀门6,打开气洗阀2,控制进气压力为0. 2MPa,关闭其他阀门,开启水泵,控制水泵的流量在144 - 192 m3/h,进水压力为0. 3MPa,冲洗5 — 15分钟;然后对第一段进行反向清洗: 在水箱内放入反渗透的产水,并配置一定浓度的清洗药剂,打开阀门3和阀门4,打开反向气洗阀5,控制进气压力为0. 2MPa,关闭其他阀门,开启水泵,控制水泵的流量在144 一192 m3/h,进水压力为0. 3MPa,冲洗5 — 15分钟;然后对第二段进行正向清洗:在水箱内放入反渗透的产水,并配置一定浓度的清洗药剂,打开阀门7和阀门12,打开气洗阀8,控制进气压力为0.2MPa,关闭其他阀门,开启水泵 a, other valves closed, the pump is turned on, the control flow pump in 108 - 144 m3 / h, inlet pressure 0. 3MPa, rinsed 5--15 min; and then washing the forward direction of the first segment: placed in the tank reverse osmosis product water, cleaning agent and configure certain concentration, open valve 1 and valve 6, air wash valve 2 is opened, the intake pressure is controlled 0. 2MPa, other valves closed, the pump is turned on, the control flow pump 144-- 192 m3 / h, inlet pressure 0. 3MPa, rinsed 5--15 min; then reverse cleaning of the first stage: into reverse osmosis product water in the water tank, and arranged a certain concentration of the cleaning agent, the valve is opened 3 and valve 4, the reverse purge valve 5 is opened, the intake pressure is controlled 0. 2MPa, other valves closed, the pump is turned on, the control flow of the pump 144 in a 192 m3 / h, inlet pressure 0. 3MPa, flushing 5--15 min; and then washing the forward direction of the second section: placed in the tank of the reverse osmosis product water, and configure certain concentration of the cleaning agent, the valve 7 is opened and the valve 12, purge valve 8 is opened, the intake air control pressure of 0.2MPa, close other valves, pumps open ,控制水泵的流量在108 — 144 m3/h,进水压力为0. 3MPa,冲洗5 - 15分钟;然后对第二段进行反向清洗:在水箱内放入反渗透的产水,并配置一定浓度的清洗药剂,打开阀门9和阀门10,打开气洗阀11,控制进气压力为0. 2MPa,关闭其他阀门,开启水泵,控制水泵的流量在108 - 144 m3/h,进水压力为0. 3MPa,冲洗5 — 15分钟;通过上述清洗和冲洗,反渗透膜的产水量达到原来的99%以上,反渗透膜组件的压差降为0. 25MPa。 To control the pump flow in the 108 - 144 m3 / h, inlet pressure 0. 3MPa, rinsed 5--15 min; then the second segment reverse cleaning: into reverse osmosis product water in the water tank, and arranged a certain concentration of the cleaning agent, the valve 9 is opened and the valve 10, purge valve 11 is opened, the intake pressure is controlled 0. 2MPa, other valves closed, the pump is turned on, the control flow pump in 108 - 144 m3 / h, inlet pressure It is 0. 3MPa, rinsed 5--15 min; through the washing and rinsing water production is a reverse osmosis membrane more than 99% of the original, the reverse osmosis membrane module pressure drop 0. 25MPa.

[0019] 实际系统运行时是上述正向冲洗,反向冲洗,正向化学清洗,反向化学清洗以及气洗的任意组合,正向冲洗,反向冲洗,正向化学清洗,反向化学清洗可以与实际的化学清洗相结合,即水泵和水箱实现共用,被冲出的水返回水箱,可循环使用,提高了系统的回收率。 [0019] The actual system runtime said forward flushing, back washing, chemical washing forward, reverse and any combination of chemical cleaning of the air wash, rinse forward, reverse flushing, chemical cleaning forward, reverse chemical cleaning may be combined with the actual chemical cleaning, i.e. the water pump and a water tank in common, and the water is returned out of the tank can be recycled to improve the recovery rate of the system. 另外,可通过PLC控制,实现阀门的自动切换,从而实现自动控制。 Further, by PLC control, automatic switching valve, in order to achieve automatic control.

[0020] 最后,需要特别指出的是,以上列举的仅是本发明的具体实施案例。 [0020] Finally, it is particularly pointed out that the above mentioned embodiments are merely specific case of the present invention. 显然,本发明不限于上述实施案例,还可以许多的组合。 Obviously, the present invention is not limited to the above embodiments cases, it may also be many combinations. 本领域的普通技术人员能从本发明公开的内容直接导出或联想到的所有情形,均应当认为是本发明的保护范围。 All cases of ordinary skill in the art derived directly from this disclosure or think of, are to be considered the scope of the invention.

Claims (8)

1. 一种反渗透膜污染防治的方法,其特征在于:当反渗透膜系统产水量低于初始产水量的10%或反渗透膜组件的压差大于0. 35MPa时,人工或自动控制,通过正向冲洗膜表面、 反向冲洗膜表面、正向化学清洗膜表面、反向化学清洗膜表面、正向气体清洗膜表面或反向气体清洗膜表面中的一种或多种组合,对反渗透膜进行冲洗、清洗,使反渗透膜系统产水量恢复至初始产水量的99%以上,压差小于0. 25MPa。 1. A method for pollution control of the reverse osmosis membrane, wherein: when the reverse osmosis membrane water production system is less than 10% of the initial yield pressure water or reverse osmosis membrane module is larger than 0. 35MPa, manual or automatic control, by forward flushing the membrane surface, the back flush the membrane surface, the forward surface of the membrane chemical cleaning, chemical cleaning of the reverse surface of the film, the film surface of the forward or reverse cleaning gas purge gas film surface of one or more combinations of flushing the reverse osmosis membrane, cleaning water production system of reverse osmosis membrane recovered to 99% of the initial product water, the pressure is less than 0. 25MPa.
2.根据权利要求1所述的一种反渗透膜污染防治的方法,其特征在于所述的正向冲洗膜表面是冲洗水从正向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行冲洗,进水压力小于0. 5MPa,单支膜管的进水流量6 - 8m3/h,冲洗水返回水箱循环使用。 2. The method of claim 1 A reverse osmosis membrane pollution prevention claim, wherein the membrane surface is rinsed forward from the forward flush water into the reverse osmosis membrane system, through the pump and 5 micron bag a reverse osmosis membrane filter to flush the system, the water pressure of less than 0. 5MPa, single membrane influent flow pipe 6 - 8m3 / h, the tank rinsing water recycling return.
3.根据权利要求1所述的一种反渗透膜污染防治的方法,其特征在于所述的反向冲洗膜表面是冲洗水从反向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行冲洗,进水压力小于0. 5MPa,单支膜管的进水流量6 - 8m3/h,冲洗水返回水箱循环使用。 3. The method of claim 1, a reverse osmosis membrane pollution prevention claim, wherein said backflushing the membrane surface is flush water from the reverse osmosis membrane into the system, through the pump and 5 micron bag a reverse osmosis membrane filter to flush the system, the water pressure of less than 0. 5MPa, single membrane influent flow pipe 6 - 8m3 / h, the tank rinsing water recycling return.
4.根据权利要求1所述的一种反渗透膜污染防治的方法,其特征在于所述的正向化学清洗膜表面是在清洗水箱内配置清洗药剂,通过水泵将清洗药剂从正向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行化学清洗,进水压力小于0. 5MPa, 单支膜管的进水流量6 - 8m3/h,清洗水返回水箱循环使用。 4. The method of claim 1. A reverse osmosis membrane as claimed in claim pollution control, wherein said chemical cleaning of the membrane surface forward cleaning agent is disposed in the cleaning tank, through the pump into the cleaning agent from the forward trans membrane system, chemical cleaning of the reverse osmosis membrane and through the pump system 5 micron bag filter, the water pressure of less than 0. 5MPa, single membrane influent flow pipe 6 - 8m3 / h, circulating the washing water is returned to tank use.
5.根据权利要求1所述的一种反渗透膜污染防治的方法,其特征在于所述的反向化学清洗膜表面是在清洗水箱内配置清洗药剂,通过水泵将清洗药剂从反向进入反渗透膜系统,通过水泵和5微米的袋式过滤器对反渗透膜系统进行化学清洗,进水压力小于0. 5MPa, 单支膜管的进水流量6 - 8m3/h,清洗水返回水箱循环使用。 5. The method of claim 1 A reverse osmosis membrane pollution prevention claim, wherein said reverse chemical cleaning membrane surface is disposed in the washing water tank cleaning agent, the cleaning agent through the pump from entering the reverse trans membrane system, chemical cleaning of the reverse osmosis membrane and through the pump system 5 micron bag filter, the water pressure of less than 0. 5MPa, single membrane influent flow pipe 6 - 8m3 / h, circulating the washing water is returned to tank use.
6.根据权利要求1所述的一种反渗透膜污染防治的方法,其特征在于所述的正向气体清洗膜表面是通过洁净的压缩气体,从正向进入反渗透膜系统,进气压小于0. 5MPa。 6. The method of claim 1, a reverse osmosis membrane pollution prevention claim, wherein the forward surface of the membrane cleaning gas by clean compressed gas from the forward into the reverse osmosis membrane system, the intake pressure is less than 0. 5MPa.
7.根据权利要求1所述的一种反渗透膜污染防治的方法,其特征在于所述的反向气体清洗膜表面是通过洁净的压缩气体,从反向进入反渗透膜系统,进气压小于0. 5MPa。 7. The method of claim 1. A reverse osmosis membrane as claimed in claim pollution control, wherein said reverse cleaning gas through the membrane surface clean compressed gas from entering the reverse osmosis membrane system, the intake pressure is less than 0. 5MPa.
8.根据权利要求1所述的一种反渗透膜污染防治的方法,其特征在于所述的反渗透膜结构形式是卷式结构。 8. The method of claim 1. A reverse osmosis membrane according to claim pollution control, wherein said reverse osmosis membrane structure is the volume structure.
CN2011103945790A 2011-12-02 2011-12-02 Reverse osmosis membrane pollution prevention and control method CN102512966A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104211136A (en) * 2014-10-14 2014-12-17 厦门绿创科技有限公司 Full-automatic control nanofiltration membrane online strong flushing method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070278152A1 (en) * 2006-05-31 2007-12-06 Musale Deepak A Method of improving performance of ultrafiltration or microfiltration membrane process in landfill leachate treatment
CN101098746A (en) * 2004-12-24 2008-01-02 西门子水技术公司 Cleaning in membrane filtration systems
CN101284213A (en) * 2008-05-30 2008-10-15 北京汉青天朗水处理科技有限公司 Method and apparatus for cleaning film separation equipment
CN101641147A (en) * 2007-04-03 2010-02-03 旭化成化学株式会社 Washing agent for separation membrane, process for producing the same and method of washing
CN101653701A (en) * 2008-08-22 2010-02-24 天津膜天膜工程技术有限公司 Method and device for chemically cleaning hollow fiber filtration membrane
CN102049198A (en) * 2009-10-30 2011-05-11 中国石油化工股份有限公司 Method for flushing reverse osmosis membrane

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101098746A (en) * 2004-12-24 2008-01-02 西门子水技术公司 Cleaning in membrane filtration systems
US20070278152A1 (en) * 2006-05-31 2007-12-06 Musale Deepak A Method of improving performance of ultrafiltration or microfiltration membrane process in landfill leachate treatment
CN101641147A (en) * 2007-04-03 2010-02-03 旭化成化学株式会社 Washing agent for separation membrane, process for producing the same and method of washing
CN101284213A (en) * 2008-05-30 2008-10-15 北京汉青天朗水处理科技有限公司 Method and apparatus for cleaning film separation equipment
CN101653701A (en) * 2008-08-22 2010-02-24 天津膜天膜工程技术有限公司 Method and device for chemically cleaning hollow fiber filtration membrane
CN102049198A (en) * 2009-10-30 2011-05-11 中国石油化工股份有限公司 Method for flushing reverse osmosis membrane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104211136A (en) * 2014-10-14 2014-12-17 厦门绿创科技有限公司 Full-automatic control nanofiltration membrane online strong flushing method
CN104211136B (en) * 2014-10-14 2017-01-18 厦门绿创科技有限公司 Automatic control nanofiltration online with flushing method

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