WO2022183628A1 - Pretreatment integrated spiral-wound ro membrane element and reverse osmosis filter element comprising same - Google Patents

Pretreatment integrated spiral-wound ro membrane element and reverse osmosis filter element comprising same Download PDF

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WO2022183628A1
WO2022183628A1 PCT/CN2021/101181 CN2021101181W WO2022183628A1 WO 2022183628 A1 WO2022183628 A1 WO 2022183628A1 CN 2021101181 W CN2021101181 W CN 2021101181W WO 2022183628 A1 WO2022183628 A1 WO 2022183628A1
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layer
membrane
composite layer
pretreatment
water inlet
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PCT/CN2021/101181
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French (fr)
Chinese (zh)
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朴济成
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韩佳(上海)环保设备有限公司
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Priority claimed from CN202110231121.7A external-priority patent/CN112808010A/en
Priority claimed from CN202120451310.0U external-priority patent/CN215463304U/en
Application filed by 韩佳(上海)环保设备有限公司 filed Critical 韩佳(上海)环保设备有限公司
Publication of WO2022183628A1 publication Critical patent/WO2022183628A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/08Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/10Accessories; Auxiliary operations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis

Definitions

  • the invention relates to the technical field of water filtering equipment, in particular to a pretreatment integrated roll-type RO membrane element and a reverse osmosis filter element thereof.
  • the RO membrane is a relatively expensive filter component.
  • the raw water needs to be pretreated before entering the reverse osmosis filter where the RO membrane is located.
  • Install a separate pretreatment device to achieve pretreatment such as adding a separate carbon rod filter for residual chlorine adsorption and/or adding a non-woven fabric for impurity adsorption, etc., which makes the entire water filter machine bulky, and each filter with different functions.
  • the life of the filter element is different, the cost of replacing the consumables and the labor cost of the filter element is high, and it is also easy to replace it in the past, resulting in unstable protection of the water quality RO membrane.
  • the object of the present invention is to provide a pretreatment integrated roll-type RO membrane element and its reverse osmosis filter element, which mainly solves the above-mentioned problem 1 of the prior art, how to integrate the pretreatment of the raw water with the RO membrane filtration, The problem of reducing the volume of the filtration equipment; the second problem: to avoid the problem of high-frequency replacement caused by different functional filter elements, and provide a pretreatment integrated roll-type RO membrane element and its reverse osmosis filter element.
  • the technical solution adopted in the present invention is: a pretreatment integrated roll-type RO membrane element, including RO membrane sheet, characterized in that: the contact surface of the RO membrane sheet in contact with the raw water is provided with Preprocessed composite layers.
  • the pretreated composite layer includes a composite layer for removing residual chlorine and/or removing impurities and/or descaling the raw water before the RO membrane filters the raw water.
  • the composite layer is carbon fiber cloth and/or PP cotton and/or cloth and/or non-woven fabric and/or carbon powder layer and/or carbon particle layer and/or ion exchange resin.
  • the composite layer is one layer, and the side of the composite layer facing away from the RO diaphragm is provided with a water inlet layer or the side of the composite layer facing the RO diaphragm is provided with a water inlet layer;
  • the composite layer is more than two layers, and the composite layer is provided with a water inlet layer and/or the outermost layer between the composite layer and the composite layer. Influent layer cross setting.
  • the composite layer is one layer
  • the water inlet layer is one layer
  • the pretreatment-integrated roll-type RO membrane element is formed by stacking the RO membrane, the composite layer and the water inlet layer layer by layer in sequence
  • the composite layer is one layer
  • the water inlet layer is two layers
  • the pretreatment-integrated roll-type RO membrane element is formed by stacking the RO membrane sheet, the water inlet layer, the composite layer and the water inlet layer in sequence;
  • the composite layer is two layers
  • the water inlet layer is three layers
  • the pretreatment integrated roll-type RO membrane element is sequentially composed of the RO membrane, the water inlet layer, the composite layer, the water inlet layer, the composite layer and the water inlet layer. Layer upon layer settings.
  • a reverse osmosis filter element characterized in that: the reverse osmosis filter element comprises the above-mentioned pretreatment integrated roll-type RO membrane element, the two RO membrane sheets form a group, and the two RO membrane sheets in each group are formed between the two RO membrane sheets.
  • the contact surface of one RO membrane sheet in each group that contacts the raw water is provided with a composite layer for pre-processing the raw water; Processed composite layers.
  • the space communicates with the central tube cavity, and a water-producing layer is arranged in the space.
  • a reverse osmosis filter element characterized in that: the reverse osmosis filter element includes the above-mentioned one pretreatment integrated roll-type RO membrane element, the two RO membrane sheets form a group, and the two RO membrane sheets in each group are between the two RO membrane sheets. A space for gathering purified water after filtration is formed between them;
  • the contact surface of one RO membrane sheet in each group that contacts the raw water is provided with a composite layer for pre-processing the raw water; Processed composite layers.
  • the space communicates with the central tube cavity, and a water-producing layer is arranged in the space.
  • the composite layer is one layer, which is a carbon fiber cloth layer
  • the composite layer is two layers, which are carbon fiber cloth layer and PP cotton layer respectively.
  • the present invention has the following beneficial effects:
  • the functions required for pretreatment are realized by adding a composite layer 2 on the RO membrane 1, and there is no need to set up each It can save costs and greatly reduce the overall space occupied by the filtering equipment.
  • pre-treatment of a separate filter element causes damage to the RO diaphragm 1, and the loss is relatively large). Reduce the possibility of damage to the RO diaphragm. It also avoids the problem of high frequency replacement due to different functional filter elements.
  • FIG. 1 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 1 (single-layer composite layer, no water inlet cloth).
  • FIG. 2 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 1 (two-layer composite layer, no water inlet cloth).
  • Figure 3 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 2 (single-layer composite layer, with a single-layer water inlet cloth, RO membrane 1, composite layer 2 and water inlet layer 3 are sequentially layered layer overlay settings).
  • Figure 4 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 2 (two-layer composite layer, a single-layer water inlet cloth, RO membrane sheet 1, composite layer 2, composite layer 2 and water inlet Layer 3 is set layer by layer in sequence).
  • Example 5 is a schematic structural diagram of a pretreatment integrated roll-type RO membrane element in Example 2 (two-layer composite layers, a single-layer water inlet cloth, RO membrane sheet 1, water inlet layer 3, composite layer 2 and inlet The water layers 3 are arranged layer by layer in sequence).
  • Example 6 is a schematic structural diagram of a pretreatment integrated roll-type RO membrane element in Example 2 (two layers of composite layers, three layers of water inlet cloth, RO membrane sheet 1, water inlet layer 3, composite layer 2, water inlet Layer 3, composite layer 2 and water inlet layer 3 are arranged layer by layer in sequence).
  • the so-called “raw water” refers to the water entering the filter element (such as reverse osmosis filter element) to be filtered, or the unfiltered water;
  • the so-called “clean water” refers to the clean water that meets the safety standards after being filtered by the RO membrane 1
  • the so-called “sewage” refers to the remaining sewage that does not meet the safety standards after being filtered by the RO membrane 1 (such as water containing many impurities and/or high residual chlorine and/or containing a lot of scale).
  • RO membrane 1 refers to a reverse osmosis membrane, which is generally used in a reverse osmosis filter element.
  • the so-called "pretreatment integrated roll-type RO membrane element” refers to adding a composite layer 2 with a pretreatment function on the RO membrane, and then using it in a single reverse osmosis filter element, that is, a single reverse osmosis filter element.
  • the pretreatment function can be performed in the filter itself, and there is no need to prepend other devices and/or equipment for pretreatment of the raw water entering the filter element (for protecting the RO membrane 1, such as preventing the RO membrane 1 from being worn by impurities and/or To help pre-treat residual chlorine, these can help prolong the service life of the RO membrane 1).
  • the RO membrane 1 with the additional composite layer is a pre-integrated roll-type RO membrane element.
  • the specific embodiment 1 provides a pretreatment integrated roll-type RO membrane element, including the RO membrane 1, and the contact surface of the RO membrane 1 in contact with the raw water is provided with a For the composite layer 2 pretreated with raw water.
  • the functions required for pretreatment are realized by adding a composite layer 2 on the RO membrane 1, and there is no need to pre-install pretreatment filter elements or components with various functions, which saves costs and greatly reduces the overall occupation of the filtration equipment. size of space.
  • the pretreated composite layer 2 includes a composite layer 2 for removing residual chlorine and/or removing impurities and/or descaling the raw water before the RO membrane 1 filters the raw water.
  • the composite layer 2 is carbon fiber cloth and/or PP cotton and/or cloth and/or non-woven fabric and/or carbon powder layer and/or carbon particle layer and/or ion exchange resin.
  • the composite layer 2 also plays the role of separating the RO membrane 1, preventing the RO membrane 1 from interacting with each other. The friction causes damage to the RO diaphragm 1 .
  • the composite layer 2 is one layer, and the contact surface of the RO membrane 1 in contact with the raw water is provided with a composite layer 2 for pretreatment of the raw water, that is to say, the RO membrane 1 and the composite layer 2 are sequentially
  • the settings are stacked one after the other.
  • the composite layer 2 is two layers, and the contact surface of the RO membrane 1 in contact with the raw water is provided with two layers of composite layers 2 for pretreatment of the raw water, that is to say, the RO membrane 1, the composite layer 2 are sequentially Layer 2 and composite layer 2 are arranged layer by layer in sequence.
  • the embodiment 2 provides a pretreatment integrated roll-type RO membrane element.
  • the difference between the embodiment 2 and the embodiment 1 is that the water inlet layer 3 is added, such as the described
  • the composite layer 2 is one layer, and the side of the composite layer 2 facing away from the RO membrane 1 is provided with a water inlet layer 3, that is, the RO membrane 1, the composite layer 2 and the water inlet layer 3 are arranged layer by layer in sequence, see Figure 3;
  • the water inlet layer 3 increases the water inlet speed, and/or separates the curled composite layer 2 from the composite layer 2 .
  • the composite layer 2 can be more than two layers, and the water inlet layer 3 and/or the outermost composite layer 2 is provided between the composite layer 2 and the composite layer 2 on the side facing away from the RO membrane 1.
  • a water inlet layer 3 and/or a composite layer 2 and a water inlet layer 3 are arranged crosswise.
  • the outermost composite layer 2 refers to the layer of composite layer 2 that is farthest from the RO membrane 1. Between the composite layer 2 and the RO membrane 1, there are more than one other composite layer 2.
  • the outermost composite layer 2 It can be a composite layer 2 with the same function or a composite layer 2 with different functions.
  • the composite layer 2 is two layers, and the water inlet layer 3 is one layer (see Figure 4).
  • the RO membrane 1, the composite layer 2, the composite layer 2 and the water inlet layer 3 are stacked in sequence.
  • the water inlet layer 3 can also be more than two layers, and the water inlet layer 3 and the composite layer 2 are crossed.
  • the water inlet layer 3 is two layers, and the composite layer 2 is one layer (see Figure 5).
  • the water inlet layer 3, the composite layer 2 and the water inlet layer 3 are arranged layer by layer in sequence.
  • the water inlet layer 3 is three layers, and the composite layer 2 is two layers (see Figure 6).
  • the RO membrane 1, the water inlet layer 3, the composite layer 2, the water inlet layer 3, the composite layer 2 and the water inlet layer 3 The settings are stacked one after the other.
  • a water inlet layer 3 is arranged between the composite layers 2 and 2 to help improve the water inlet speed.
  • the outermost composite layer 2 is provided with a water inlet layer 3 on the side facing away from the RO membrane 1. In order to help the water inlet, all the raw water can pass through all the After the composite layer 2 of various pretreatment functions is pretreated, it enters the RO membrane 1 for filtration.
  • a reverse osmosis filter element characterized in that: the reverse osmosis filter element includes the above-mentioned pretreatment integrated roll-type RO membrane element, the two RO membrane sheets 1 form a group, and the two RO membrane sheets 1 in each group are formed.
  • a water-producing layer 4 is formed in the space for collecting purified water after filtration, and this space is connected to the central tube cavity. use.
  • the contact surface of one RO membrane sheet 1 in each group that contacts the raw water is provided with a composite layer 2 for pre-processing the raw water; or the contact surfaces of the two RO membrane sheets 1 in each group that contact the raw water are provided for Raw water for pretreatment of composite layer 2.
  • the composite layer 2 is one layer, which is a carbon fiber cloth layer
  • the composite layer 2 is two layers, which are carbon fiber cloth layer and PP cotton layer respectively.
  • the water inlet layer 3 can be mesh cloth and/or non-woven fabric, and the water inlet layer 3 also has a filtering effect.
  • the reverse osmosis filter element can also be formed by rolling multiple sets of RO membrane sheets 1 .

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
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Abstract

A pretreatment integrated spiral-wound RO membrane element, comprising RO membranes (1), wherein composite layers (2) used for pretreating raw water are arranged on contact faces of the RO membranes (1) that come in contact with the raw water. The following problems in the prior art are solved: integrating pretreatment and RO membrane filtration of raw water, thereby reducing the size of a filtering apparatus; and avoiding frequent replacement caused by filter elements having different functions.

Description

一种预处理一体化卷式的RO膜元件及其反渗透滤芯A pretreatment integrated roll-type RO membrane element and its reverse osmosis filter element 技术领域technical field
本发明涉及滤水设备技术领域,尤其涉及一种预处理一体化卷式的RO膜元件及其反渗透滤芯。The invention relates to the technical field of water filtering equipment, in particular to a pretreatment integrated roll-type RO membrane element and a reverse osmosis filter element thereof.
背景技术Background technique
现有技术中,RO膜片属于价格较高的过滤部件,为了保护RO膜片,延长其使用寿命,原水进入RO膜片所在的反渗透滤芯之前,需要对原水进行预处理,通过前置加装单独的预处理装置实现预处理,比如加装单独碳棒过滤芯进行余氯吸附和/或加装无纺布进行杂质吸附等,这样造成整个滤水器机器体积庞大,而且各个不同功能滤芯寿命不同,滤芯更换耗材成本高和人工成本高,也容易以往更换造成水质RO膜片保护力度不稳定。In the prior art, the RO membrane is a relatively expensive filter component. In order to protect the RO membrane and prolong its service life, the raw water needs to be pretreated before entering the reverse osmosis filter where the RO membrane is located. Install a separate pretreatment device to achieve pretreatment, such as adding a separate carbon rod filter for residual chlorine adsorption and/or adding a non-woven fabric for impurity adsorption, etc., which makes the entire water filter machine bulky, and each filter with different functions. The life of the filter element is different, the cost of replacing the consumables and the labor cost of the filter element is high, and it is also easy to replace it in the past, resulting in unstable protection of the water quality RO membrane.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种预处理一体化卷式的RO膜元件及其反渗透滤芯,主要解决上述现有技术存在的问题一,如何将对原水进行的预处理和RO膜过滤一体化,减小过滤设备体积的问题;问题二:避免因不同功能滤芯导致高频率更换的问题,而提供的一种预处理一体化卷式的RO膜元件及其反渗透滤芯。The object of the present invention is to provide a pretreatment integrated roll-type RO membrane element and its reverse osmosis filter element, which mainly solves the above-mentioned problem 1 of the prior art, how to integrate the pretreatment of the raw water with the RO membrane filtration, The problem of reducing the volume of the filtration equipment; the second problem: to avoid the problem of high-frequency replacement caused by different functional filter elements, and provide a pretreatment integrated roll-type RO membrane element and its reverse osmosis filter element.
为了实现上述目的,本发明所采用的技术方案是:一种预处理一体化卷式的RO膜元件,包括RO膜片,其特征于:所RO膜片接触原水的接触面设有用于对原水进行预处理的复合层。In order to achieve the above purpose, the technical solution adopted in the present invention is: a pretreatment integrated roll-type RO membrane element, including RO membrane sheet, characterized in that: the contact surface of the RO membrane sheet in contact with the raw water is provided with Preprocessed composite layers.
进一步,所述预处理的复合层包括在RO膜片对原水进行过滤之前对原水进行去除余氯和/或去除杂质和/或去水垢的复合层。Further, the pretreated composite layer includes a composite layer for removing residual chlorine and/or removing impurities and/or descaling the raw water before the RO membrane filters the raw water.
进一步,所述复合层为碳纤维布和/或PP棉和/或布和/或无纺布和/或碳粉末层和/或碳颗粒层和/或离子交换树脂。Further, the composite layer is carbon fiber cloth and/or PP cotton and/or cloth and/or non-woven fabric and/or carbon powder layer and/or carbon particle layer and/or ion exchange resin.
进一步,所述复合层为一层,复合层背向RO膜片的一侧设有进水层或复合层面向RO膜片的一侧设有进水层;Further, the composite layer is one layer, and the side of the composite layer facing away from the RO diaphragm is provided with a water inlet layer or the side of the composite layer facing the RO diaphragm is provided with a water inlet layer;
或所述复合层为两层以上,复合层和复合层之间设置有进水层和/或最外层的复合层背向RO膜片的一侧设有进水层和/或复合层和进水层交叉设置。Or the composite layer is more than two layers, and the composite layer is provided with a water inlet layer and/or the outermost layer between the composite layer and the composite layer. Influent layer cross setting.
进一步,所述复合层为一层,进水层为一层,预处理一体化卷式的RO膜元件由RO膜片、复合层和进水层依次层层叠加设置;Further, the composite layer is one layer, the water inlet layer is one layer, and the pretreatment-integrated roll-type RO membrane element is formed by stacking the RO membrane, the composite layer and the water inlet layer layer by layer in sequence;
或所述复合层为一层,进水层为两层,预处理一体化卷式的RO膜元件由RO膜片、进水层、复合层和进水层依次层层叠加设置;Or the composite layer is one layer, the water inlet layer is two layers, and the pretreatment-integrated roll-type RO membrane element is formed by stacking the RO membrane sheet, the water inlet layer, the composite layer and the water inlet layer in sequence;
或所述复合层为二层,进水层为三层,预处理一体化卷式的RO膜元件依次由RO膜片、进水层、复合层、进水层、复合层和进水层依次层层叠加设置。Or the composite layer is two layers, the water inlet layer is three layers, and the pretreatment integrated roll-type RO membrane element is sequentially composed of the RO membrane, the water inlet layer, the composite layer, the water inlet layer, the composite layer and the water inlet layer. Layer upon layer settings.
一种反渗透滤芯,其特征在于:该反渗透滤芯包括上述一种预处理一体化卷式的RO膜元件,所述两片RO膜片形成一组,每组两片RO膜片之间形成用于过滤后净水聚集的空间;A reverse osmosis filter element, characterized in that: the reverse osmosis filter element comprises the above-mentioned pretreatment integrated roll-type RO membrane element, the two RO membrane sheets form a group, and the two RO membrane sheets in each group are formed between the two RO membrane sheets. The space used for the gathering of purified water after filtration;
所述每组中一片RO膜片接触原水的接触面设有用于对原水进行预处理的复合层;或所述每组中两片RO膜片接触原水的接触面均设有用于对原水进行预处理的复合层。The contact surface of one RO membrane sheet in each group that contacts the raw water is provided with a composite layer for pre-processing the raw water; Processed composite layers.
进一步,所述空间连通中心管腔体,该空间设置产水层。Further, the space communicates with the central tube cavity, and a water-producing layer is arranged in the space.
一种反渗透滤芯,其特征在于:该反渗透滤芯包括上述所述一种预处理一体化卷式的RO膜元件,所述两片RO膜片形成一组,每组两片RO膜片之间形成用于过滤后净水聚集空间;A reverse osmosis filter element, characterized in that: the reverse osmosis filter element includes the above-mentioned one pretreatment integrated roll-type RO membrane element, the two RO membrane sheets form a group, and the two RO membrane sheets in each group are between the two RO membrane sheets. A space for gathering purified water after filtration is formed between them;
所述每组中一片RO膜片接触原水的接触面设有用于对原水进行预处理的复合层;或所述每组中两片RO膜片接触原水的接触面均设有用于对原水进行预处理的复合层。The contact surface of one RO membrane sheet in each group that contacts the raw water is provided with a composite layer for pre-processing the raw water; Processed composite layers.
进一步,所述空间连通中心管腔体,该空间设置产水层。Further, the space communicates with the central tube cavity, and a water-producing layer is arranged in the space.
进一步,所述复合层为一层,为碳纤维布层;Further, the composite layer is one layer, which is a carbon fiber cloth layer;
或所述复合层为两层,分别为碳纤维布层和PP棉层。Or the composite layer is two layers, which are carbon fiber cloth layer and PP cotton layer respectively.
鉴于上述技术特征,本发明具有如下有益效果:In view of the above-mentioned technical features, the present invention has the following beneficial effects:
1、本发明的一种预处理一体化卷式的RO膜元件的RO膜片,将预处理所需功能通过在RO膜片1上增设复合层2来实现,不用再另行前置地设置各种功能的预处理滤芯或部件,节约成本,也大幅度减少过滤设备整体所占的空间大小。1. In the RO membrane of the present invention, which is a pretreatment-integrated roll-type RO membrane element, the functions required for pretreatment are realized by adding a composite layer 2 on the RO membrane 1, and there is no need to set up each It can save costs and greatly reduce the overall space occupied by the filtering equipment.
2、因没有前置地设置各种功能的预处理滤芯或部件,避免了因前置预处理滤芯或部件的更换问题,节约耗材成本和人工成本,本发明产品更实惠。2. Because there is no pre-treatment filter element or component with various functions, the replacement of the pre-treatment filter element or component is avoided, the cost of consumables and labor costs are saved, and the product of the present invention is more affordable.
3、因没有前置地设置各种功能的预处理滤芯或部件,避免了因前置预处理滤芯或部件的不同使用寿命,需要按照不同时限进行更换的问题(往往容易更换其中一个或几个前置预处理单独滤芯,导致RO膜片1损害,损失较大),本发明产品一次性更换,更换人工成本节省,更换也更方便,同时也确保了对RO膜片进行稳定的保护力度,降低对RO膜片损伤的可能性。也就避免因 不同功能滤芯导致高频率更换的问题。3. Because there are no pre-processing filter elements or components with various functions, it avoids the problem of needing to be replaced according to different time limits due to the different service lives of the pre-processing filter elements or components (it is often easy to replace one or several of them). The pre-treatment of a separate filter element causes damage to the RO diaphragm 1, and the loss is relatively large). Reduce the possibility of damage to the RO diaphragm. It also avoids the problem of high frequency replacement due to different functional filter elements.
附图说明Description of drawings
图1是实施例1中一种预处理一体化卷式的RO膜元件的结构示意图(单层复合层,无进水布)。FIG. 1 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 1 (single-layer composite layer, no water inlet cloth).
图2是实施例1中一种预处理一体化卷式的RO膜元件的结构示意图(两层复合层,无进水布)。FIG. 2 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 1 (two-layer composite layer, no water inlet cloth).
图3是实施例2中一种预处理一体化卷式的RO膜元件的结构示意图(单层复合层,有单层进水布,RO膜片1、复合层2和进水层3依次层层叠加设置)。Figure 3 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 2 (single-layer composite layer, with a single-layer water inlet cloth, RO membrane 1, composite layer 2 and water inlet layer 3 are sequentially layered layer overlay settings).
图4是实施例2中一种预处理一体化卷式的RO膜元件的结构示意图(两层复合层,有单层进水布,RO膜片1、复合层2、复合层2和进水层3依次层层叠加设置)。Figure 4 is a schematic structural diagram of a pretreatment-integrated roll-type RO membrane element in Example 2 (two-layer composite layer, a single-layer water inlet cloth, RO membrane sheet 1, composite layer 2, composite layer 2 and water inlet Layer 3 is set layer by layer in sequence).
图5是实施例2中一种预处理一体化卷式的RO膜元件的结构示意图(两层复合层,有单层进水布,RO膜片1、进水层3、复合层2和进水层3依次层层叠加设置)。5 is a schematic structural diagram of a pretreatment integrated roll-type RO membrane element in Example 2 (two-layer composite layers, a single-layer water inlet cloth, RO membrane sheet 1, water inlet layer 3, composite layer 2 and inlet The water layers 3 are arranged layer by layer in sequence).
图6是实施例2中一种预处理一体化卷式的RO膜元件的结构示意图(两层复合层,有三层进水布,RO膜片1、进水层3、复合层2、进水层3、复合层2和进水层3依次层层叠加设置)。6 is a schematic structural diagram of a pretreatment integrated roll-type RO membrane element in Example 2 (two layers of composite layers, three layers of water inlet cloth, RO membrane sheet 1, water inlet layer 3, composite layer 2, water inlet Layer 3, composite layer 2 and water inlet layer 3 are arranged layer by layer in sequence).
图中:1、RO膜片;2、复合层;3、进水层;4、产水层。In the figure: 1. RO membrane; 2. Composite layer; 3. Water inlet layer; 4. Water production layer.
具体实施方式Detailed ways
下面结合具体实施方式,进一步阐述本发明。应理解,这些实施例仅用 于说明本发明而不用于限制本发明的范围。此外应理解,在阅读了本发明讲授的内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
所谓“原水”是指进入滤芯(比如反渗透滤芯)待过滤的水,或者是未经过滤的水;所谓“净水”是指经过RO膜片1过滤后的符合安全标准的干净的水,,所谓“污水”是指经过RO膜片1过滤后的不符合安全标准且剩余下来的污水(比如含有杂质多和/或余氯高和/或含有水垢多的水)。RO膜片1是指反渗透膜片,一般用于反渗透滤芯中。所谓“预处理一体化卷式的RO膜元件”是指通过在RO膜片上增加具有预处理功能的复合层2,然后用于一个单独的反渗透滤芯中,也就是说一个单独反渗透滤芯中本身即可进行预处理功能,无需在前置其他对进入滤芯的原水进行预处理的其他装置和/或设备(用于保护RO膜片1,比如避免RO膜片1被杂质磨损和/或帮助预先处理余氯,这些都能够帮助延长RO膜片1的使用寿命),此时的附加复合层的RO膜片1即为预处理一体化卷式的RO膜元件。The so-called "raw water" refers to the water entering the filter element (such as reverse osmosis filter element) to be filtered, or the unfiltered water; the so-called "clean water" refers to the clean water that meets the safety standards after being filtered by the RO membrane 1, , the so-called "sewage" refers to the remaining sewage that does not meet the safety standards after being filtered by the RO membrane 1 (such as water containing many impurities and/or high residual chlorine and/or containing a lot of scale). RO membrane 1 refers to a reverse osmosis membrane, which is generally used in a reverse osmosis filter element. The so-called "pretreatment integrated roll-type RO membrane element" refers to adding a composite layer 2 with a pretreatment function on the RO membrane, and then using it in a single reverse osmosis filter element, that is, a single reverse osmosis filter element. The pretreatment function can be performed in the filter itself, and there is no need to prepend other devices and/or equipment for pretreatment of the raw water entering the filter element (for protecting the RO membrane 1, such as preventing the RO membrane 1 from being worn by impurities and/or To help pre-treat residual chlorine, these can help prolong the service life of the RO membrane 1). At this time, the RO membrane 1 with the additional composite layer is a pre-integrated roll-type RO membrane element.
参见图1至图2,具体实施例1,本实施例1中提供了一种预处理一体化卷式的RO膜元件,包括RO膜片1,所RO膜片1接触原水的接触面设有用于对原水进行预处理的复合层2。Referring to FIGS. 1 to 2, the specific embodiment 1 provides a pretreatment integrated roll-type RO membrane element, including the RO membrane 1, and the contact surface of the RO membrane 1 in contact with the raw water is provided with a For the composite layer 2 pretreated with raw water.
即将预处理所需功能通过在RO膜片1上增设复合层2来实现,不用再另行前置地设置各种功能的预处理滤芯或部件,节约成本,也大幅度减少过滤设备整体所占的空间大小。The functions required for pretreatment are realized by adding a composite layer 2 on the RO membrane 1, and there is no need to pre-install pretreatment filter elements or components with various functions, which saves costs and greatly reduces the overall occupation of the filtration equipment. size of space.
其次,因没有前置地设置各种功能的预处理滤芯或部件,避免了因前置预 处理滤芯或部件的更换问题,节约耗材成本和人工成本,本发明产品更实惠。Secondly, because there is no pretreatment filter element or component with various functions, the replacement problem of the pretreatment filter element or component is avoided, the cost of consumables and labor costs are saved, and the product of the present invention is more affordable.
再次,因没有前置地设置各种功能的预处理滤芯或部件,避免了因前置预处理滤芯或部件的不同使用寿命,需要按照不同时限进行更换的问题(往往容易更换其中一个或几个前置预处理单独滤芯,导致RO膜片1损害,损失较大),本发明产品一次性更换,更换人工成本节省,更换也更方便,同时也确保了对RO膜片1进行稳定的保护力度,降低对RO膜片1损伤的可能性。Thirdly, because there are no pretreatment filter elements or components with various functions in the front, the problem of needing to be replaced according to different time limits due to the different service lives of the pretreatment filter elements or components is avoided (it is often easy to replace one or several of them). The pre-treatment of a separate filter element will cause damage to the RO membrane 1, and the loss will be larger). , reducing the possibility of damage to the RO diaphragm 1.
最后,根据实际对RO膜片1保护需求和/或对水进行进一步净化需求,可以通过多个不同功能的复合层2来满足各种净水需求和/或对RO膜片1保护需求,使用更加便捷,净水效果更好。Finally, according to the actual requirements for the protection of the RO membrane 1 and/or for further purification of water, various water purification requirements and/or protection requirements for the RO membrane 1 can be met through multiple composite layers 2 with different functions. More convenient, better water purification effect.
所述预处理的复合层2包括在RO膜片1对原水进行过滤之前对原水进行去除余氯和/或去除杂质和/或去水垢的复合层2。The pretreated composite layer 2 includes a composite layer 2 for removing residual chlorine and/or removing impurities and/or descaling the raw water before the RO membrane 1 filters the raw water.
所述复合层2为碳纤维布和/或PP棉和/或布和/或无纺布和/或碳粉末层和/或碳颗粒层和/或离子交换树脂。The composite layer 2 is carbon fiber cloth and/or PP cotton and/or cloth and/or non-woven fabric and/or carbon powder layer and/or carbon particle layer and/or ion exchange resin.
假设以一片RO膜片1为例,当RO膜片1和复合层2同步卷曲后形成RO膜滤芯时,复合层2也起到隔开RO膜片1作用,避免RO膜片1之间相互摩擦造成RO膜片1损坏。Assuming that a piece of RO membrane 1 is taken as an example, when the RO membrane 1 and the composite layer 2 are rolled synchronously to form an RO membrane filter element, the composite layer 2 also plays the role of separating the RO membrane 1, preventing the RO membrane 1 from interacting with each other. The friction causes damage to the RO diaphragm 1 .
比如,参见图1,所述复合层2为一层,所RO膜片1接触原水的接触面设有用于对原水进行预处理的复合层2,也就是说依次RO膜片1和复合层2依次层层叠加设置。For example, referring to FIG. 1 , the composite layer 2 is one layer, and the contact surface of the RO membrane 1 in contact with the raw water is provided with a composite layer 2 for pretreatment of the raw water, that is to say, the RO membrane 1 and the composite layer 2 are sequentially The settings are stacked one after the other.
比如,参见图2,所述复合层2为二层,所RO膜片1接触原水的接触面设有用于对原水进行预处理的两层复合层2,也就是说依次RO膜片1、复合 层2和复合层2依次层层叠加设置。For example, referring to FIG. 2, the composite layer 2 is two layers, and the contact surface of the RO membrane 1 in contact with the raw water is provided with two layers of composite layers 2 for pretreatment of the raw water, that is to say, the RO membrane 1, the composite layer 2 are sequentially Layer 2 and composite layer 2 are arranged layer by layer in sequence.
参见图3和图6,具体实施例2,本实施例2提供了一种预处理一体化卷式的RO膜元件,实施例2同实施例1区别在于:增设进水层3,比如所述复合层2为一层,复合层2背向RO膜片1的一侧设有进水层3,即RO膜片1、复合层2和进水层3依次层层叠加设置,参见图3;当RO膜片1和复合层2同步卷曲后形成RO膜滤芯时,进水层3增加进水速度,和/或将卷曲后的复合层2和复合层2之间隔开。Referring to FIG. 3 and FIG. 6, the specific embodiment 2, the embodiment 2 provides a pretreatment integrated roll-type RO membrane element. The difference between the embodiment 2 and the embodiment 1 is that the water inlet layer 3 is added, such as the described The composite layer 2 is one layer, and the side of the composite layer 2 facing away from the RO membrane 1 is provided with a water inlet layer 3, that is, the RO membrane 1, the composite layer 2 and the water inlet layer 3 are arranged layer by layer in sequence, see Figure 3; When the RO membrane 1 and the composite layer 2 are simultaneously curled to form the RO membrane filter element, the water inlet layer 3 increases the water inlet speed, and/or separates the curled composite layer 2 from the composite layer 2 .
作为替换方案,所述复合层2可以为两层以上,复合层2和复合层2之间设置有进水层3和/或最外层的复合层2背向RO膜片1的一侧设有进水层3和/或复合层2和进水层3交叉设置。最外层的复合层2是指离RO膜片1最远的一层复合层2,该复合层2和RO膜片1之间包含一层以上其他复合层2,最外层的复合层2和其他复合层2、其他复合层2之间,可以是相同功能复合层2,也可以是不同功能的复合层2。As an alternative, the composite layer 2 can be more than two layers, and the water inlet layer 3 and/or the outermost composite layer 2 is provided between the composite layer 2 and the composite layer 2 on the side facing away from the RO membrane 1. A water inlet layer 3 and/or a composite layer 2 and a water inlet layer 3 are arranged crosswise. The outermost composite layer 2 refers to the layer of composite layer 2 that is farthest from the RO membrane 1. Between the composite layer 2 and the RO membrane 1, there are more than one other composite layer 2. The outermost composite layer 2 It can be a composite layer 2 with the same function or a composite layer 2 with different functions.
比如复合层2为两层,进水层3为一层(参见图4),此时RO膜片1、复合层2、复合层2和进水层3依次层层叠加设置。For example, the composite layer 2 is two layers, and the water inlet layer 3 is one layer (see Figure 4). At this time, the RO membrane 1, the composite layer 2, the composite layer 2 and the water inlet layer 3 are stacked in sequence.
当然进水层3也可以为两层以上,进水层3和复合层2交叉设置,比如进水层3为两层,复合层2为一层(参见图5),此时RO膜片1、进水层3、复合层2和进水层3依次层层叠加设置。Of course, the water inlet layer 3 can also be more than two layers, and the water inlet layer 3 and the composite layer 2 are crossed. For example, the water inlet layer 3 is two layers, and the composite layer 2 is one layer (see Figure 5). , the water inlet layer 3, the composite layer 2 and the water inlet layer 3 are arranged layer by layer in sequence.
比如进水层3为三层,复合层2为二层(参见图6),此时RO膜片1、进水层3、复合层2、进水层3、复合层2和进水层3依次层层叠加设置。For example, the water inlet layer 3 is three layers, and the composite layer 2 is two layers (see Figure 6). At this time, the RO membrane 1, the water inlet layer 3, the composite layer 2, the water inlet layer 3, the composite layer 2 and the water inlet layer 3 The settings are stacked one after the other.
此时当复合层2均为同一种预处理功能时,复合层2和复合层2之间设置 有进水层3,帮助提高进水速度。At this time, when the composite layers 2 all have the same pretreatment function, a water inlet layer 3 is arranged between the composite layers 2 and 2 to help improve the water inlet speed.
当复合层2均为多种预处理功能时,最外层的复合层2背向RO膜片1的一侧设有进水层3,为了在帮助进水同时,所有原水均能够通过全部的多种预处理功能复合层2进行预处理后,在进入RO膜片1进行过滤。When the composite layer 2 has various pretreatment functions, the outermost composite layer 2 is provided with a water inlet layer 3 on the side facing away from the RO membrane 1. In order to help the water inlet, all the raw water can pass through all the After the composite layer 2 of various pretreatment functions is pretreated, it enters the RO membrane 1 for filtration.
一种反渗透滤芯,其特征在于:该反渗透滤芯包括上述一种预处理一体化卷式的RO膜元件,所述两片RO膜片1形成一组,每组两片RO膜片1之间形成用于过滤后净水聚集空间,该空间连通中心管腔体,该空间设置产水层4;产水层4是为了加速净水流入中心管内,并通过中心管腔体排出供使用者使用。A reverse osmosis filter element, characterized in that: the reverse osmosis filter element includes the above-mentioned pretreatment integrated roll-type RO membrane element, the two RO membrane sheets 1 form a group, and the two RO membrane sheets 1 in each group are formed. A water-producing layer 4 is formed in the space for collecting purified water after filtration, and this space is connected to the central tube cavity. use.
所述每组中一片RO膜片1接触原水的接触面设有用于对原水进行预处理的复合层2;或所述每组中两片RO膜片1接触原水的接触面均设有用于对原水进行预处理的复合层2。The contact surface of one RO membrane sheet 1 in each group that contacts the raw water is provided with a composite layer 2 for pre-processing the raw water; or the contact surfaces of the two RO membrane sheets 1 in each group that contact the raw water are provided for Raw water for pretreatment of composite layer 2.
所述复合层2为一层,为碳纤维布层;The composite layer 2 is one layer, which is a carbon fiber cloth layer;
或所述复合层2为两层,分别为碳纤维布层和PP棉层。Or the composite layer 2 is two layers, which are carbon fiber cloth layer and PP cotton layer respectively.
进水层3可以是网布和/或无纺布,进水层3也具有过滤作用。The water inlet layer 3 can be mesh cloth and/or non-woven fabric, and the water inlet layer 3 also has a filtering effect.
反渗透滤芯也可以是由多组RO膜片1卷曲后形成。The reverse osmosis filter element can also be formed by rolling multiple sets of RO membrane sheets 1 .
以上所述仅为本发明的优选实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related All technical fields are similarly included in the scope of patent protection of the present invention.

Claims (10)

  1. 一种预处理一体化卷式的RO膜元件,包括RO膜片(1),其特征于:所RO膜片(1)接触原水的接触面设有用于对原水进行预处理的复合层(2)。A pretreatment-integrated roll-type RO membrane element, comprising an RO membrane (1), characterized in that: the contact surface of the RO membrane (1) in contact with raw water is provided with a composite layer (2) for preprocessing the raw water ).
  2. 根据权利要求1所述一种预处理一体化卷式的RO膜元件,其特征在于:所述预处理的复合层(2)包括在RO膜片(1)对原水进行过滤之前对原水进行去除余氯和/或去除杂质和/或去水垢的复合层(2)。The pretreatment-integrated roll-type RO membrane element according to claim 1, wherein the pretreated composite layer (2) comprises removing the raw water before the RO membrane (1) filters the raw water Free chlorine and/or decontamination and/or descaling composite layer (2).
  3. 根据权利要求2所述一种预处理一体化卷式的RO膜元件,其特征在于:所述复合层(2)为碳纤维布和/或PP棉和/或布和/或无纺布和/或碳粉末层和/或碳颗粒层和/或离子交换树脂。A pretreatment integrated roll-type RO membrane element according to claim 2, characterized in that: the composite layer (2) is carbon fiber cloth and/or PP cotton and/or cloth and/or non-woven fabric and/or or carbon powder layer and/or carbon particle layer and/or ion exchange resin.
  4. 根据权利要求1或2或3所述一种预处理一体化卷式的RO膜元件,其特征在于:所述复合层(2)为一层,复合层(2)背向RO膜片(1)的一侧设有进水层(3)或复合层(2)面向RO膜片(1)的一侧设有进水层(3);The pretreatment-integrated roll-type RO membrane element according to claim 1, 2 or 3, wherein the composite layer (2) is one layer, and the composite layer (2) faces away from the RO membrane (1). ) is provided with a water inlet layer (3) or the side of the composite layer (2) facing the RO membrane (1) is provided with a water inlet layer (3);
    或所述复合层(2)为两层以上,复合层(2)和复合层(2)之间设置有进水层(3)和/或最外层的复合层(2)背向RO膜片(1)的一侧设有进水层(3)和/或复合层(2)和进水层(3)交叉设置。Or the composite layer (2) is two or more layers, and the water inlet layer (3) and/or the outermost composite layer (2) is provided between the composite layer (2) and the composite layer (2) facing the RO membrane One side of the sheet (1) is provided with a water inlet layer (3) and/or the composite layer (2) and the water inlet layer (3) are arranged crosswise.
  5. 根据权利要求4所述一种预处理一体化卷式的RO膜元件,其特征在于:A kind of pretreatment integrated roll type RO membrane element according to claim 4, is characterized in that:
    所述复合层(2)为一层,进水层(3)为一层,预处理一体化卷 式的RO膜元件由RO膜片(1)、复合层(2)和进水层(3)依次层层叠加设置;The composite layer (2) is one layer, the water inlet layer (3) is one layer, and the pretreatment-integrated roll-type RO membrane element is composed of an RO membrane sheet (1), a composite layer (2) and a water inlet layer (3). ) are set layer by layer in turn;
    或所述复合层(2)为一层,进水层(3)为两层,预处理一体化卷式的RO膜元件由RO膜片(1)、进水层(3)、复合层(2)和进水层(3)依次层层叠加设置;Or the composite layer (2) is one layer, and the water inlet layer (3) is two layers. 2) and the water inlet layer (3) are arranged layer by layer in sequence;
    或所述复合层(2)为二层,进水层(3)为三层,预处理一体化卷式的RO膜元件依次由RO膜片(1)、进水层(3)、复合层(2)、进水层(3)、复合层(2)和进水层(3)依次层层叠加设置。Or the composite layer (2) is two layers, the water inlet layer (3) is three layers, and the pretreatment-integrated roll-type RO membrane element is sequentially composed of the RO membrane (1), the water inlet layer (3), and the composite layer. (2), the water inlet layer (3), the composite layer (2) and the water inlet layer (3) are arranged layer by layer in sequence.
  6. 一种反渗透滤芯,其特征在于:该反渗透滤芯包括上述权利要求1或2或3或5所述一种预处理一体化卷式的RO膜元件,所述两片RO膜片(1)形成一组,每组两片RO膜片(1)之间形成用于过滤后净水聚集的空间;A reverse osmosis filter element, characterized in that: the reverse osmosis filter element comprises a pretreatment-integrated roll-type RO membrane element according to claim 1 or 2 or 3 or 5, and the two RO membrane sheets (1) A group is formed, and a space for gathering purified water after filtration is formed between two RO membrane sheets (1) in each group;
    所述每组中一片RO膜片(1)接触原水的接触面设有用于对原水进行预处理的复合层(2);或所述每组中两片RO膜片(1)接触原水的接触面均设有用于对原水进行预处理的复合层(2)。The contact surface of one RO membrane sheet (1) in each group that contacts the raw water is provided with a composite layer (2) for pre-processing the raw water; or the contact surface of two RO membrane sheets (1) in each group that contacts the raw water Both surfaces are provided with a composite layer (2) for pretreatment of raw water.
  7. 根据权利要求6所述一种反渗透滤芯,其特征在于:所述空间连通中心管腔体,该空间设置产水层(4)。A reverse osmosis filter element according to claim 6, characterized in that: the space communicates with the central tube cavity, and the space is provided with a water production layer (4).
  8. 一种反渗透滤芯,其特征在于:该反渗透滤芯包括上述权利要求4所述一种预处理一体化卷式的RO膜元件,所述两片RO膜片(1)形成一组,每组两片RO膜片(1)之间形成用于过滤后净水聚集空间;A reverse osmosis filter element, characterized in that: the reverse osmosis filter element comprises a pretreatment integrated roll-type RO membrane element according to claim 4, the two RO membrane sheets (1) form a group, each group A space for collecting purified water after filtration is formed between the two RO membranes (1);
    所述每组中一片RO膜片(1)接触原水的接触面设有用于对原水 进行预处理的复合层(2);或所述每组中两片RO膜片(1)接触原水的接触面均设有用于对原水进行预处理的复合层(2)。The contact surface of one RO membrane sheet (1) in each group that contacts the raw water is provided with a composite layer (2) for pre-processing the raw water; or the contact surface of two RO membrane sheets (1) in each group that contacts the raw water Both surfaces are provided with a composite layer (2) for pretreatment of raw water.
  9. 根据权利要求8所述一种反渗透滤芯,其特征在于:所述空间连通中心管腔体,该空间设置产水层(4)。A reverse osmosis filter element according to claim 8, characterized in that: the space communicates with the central tube cavity, and the space is provided with a water production layer (4).
  10. 根据权利要求6或9所述一种反渗透滤芯,其特征在于:所述复合层(2)为一层,为碳纤维布层;A reverse osmosis filter element according to claim 6 or 9, characterized in that: the composite layer (2) is one layer, which is a carbon fiber cloth layer;
    或所述复合层(2)为两层,分别为碳纤维布层和PP棉层。Or the composite layer (2) consists of two layers, which are a carbon fiber cloth layer and a PP cotton layer respectively.
PCT/CN2021/101181 2021-03-02 2021-06-21 Pretreatment integrated spiral-wound ro membrane element and reverse osmosis filter element comprising same WO2022183628A1 (en)

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CN202110231121.7A CN112808010A (en) 2021-03-02 2021-03-02 RO membrane element of formula is rolled up in preliminary treatment integration and reverse osmosis filter core thereof
CN202120451310.0U CN215463304U (en) 2021-03-02 2021-03-02 RO membrane element of formula is rolled up in preliminary treatment integration and reverse osmosis filter core thereof
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CN204625349U (en) * 2015-03-31 2015-09-09 佛山市顺德区美的饮水机制造有限公司 Preprocessing filter element and the water cleaning systems with it
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