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CN111115948B - An ultrafiltration-reverse osmosis membrane method in-situ expansion and cultivation river channel management system and method - Google Patents

An ultrafiltration-reverse osmosis membrane method in-situ expansion and cultivation river channel management system and method Download PDF

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Publication number
CN111115948B
CN111115948B CN201911279751.0A CN201911279751A CN111115948B CN 111115948 B CN111115948 B CN 111115948B CN 201911279751 A CN201911279751 A CN 201911279751A CN 111115948 B CN111115948 B CN 111115948B
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ultrafiltration
reverse osmosis
expansion
river
water
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CN111115948A (en
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赵虹瑞
邢林林
张志刚
刘洋
郭玮
秦刚
罗伟
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Beijing Beikong Industrial Environmental Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses an ultrafiltration-reverse osmosis membrane method in-situ culture river channel treatment system. The system comprises a pretreatment system, an ultrafiltration system, a reverse osmosis system, a pure water collection system, a culture expansion system, a throwing system and a matched system. The river water is used as a water source, the river water is filtered and concentrated through an ultrafiltration-reverse osmosis double-membrane process, and the concentrated microorganism concentrated solution is subjected to in-situ expansion culture and is put into the river water, so that the purposes of purifying the water quality of the river water and treating the river water pollution are realized. Pure water generated by reverse osmosis can be recycled, and water resource value is generated. The river treatment system provided by the invention has the advantages of small occupied area, easiness in operation, low running cost and good treatment effect, and is suitable for the river pollution and black and odorous water body treatment fields.

Description

Ultrafiltration-reverse osmosis membrane method in-situ culture river course treatment system and method
Technical Field
The invention relates to the field of river water pollution and black and odorous water body treatment, in particular to an ultrafiltration-reverse osmosis membrane method in-situ culture river channel treatment system and method.
Background
According to the working guidelines for urban black and odorous water body remediation, the selection of the technology is in accordance with the principles of applicability, comprehensiveness, economy, long-acting property, safety and the like, the black and odorous water body remediation is mainly divided into point source, non-point source and endogenous remediation at present, and the microbial agent has the characteristics of in-situ remediation, good treatment effect, quick response, low cost and the like, and has wide application in the aspect of black and odorous water body remediation.
Compared with the traditional microbial agent production and expansion culture technology, the method has the advantages of low in-situ expansion culture cost, no transportation, easy success in biological enhancement by utilizing indigenous microorganisms, and obvious advantages. In the prior art, the device for sewage treatment by utilizing the in-situ expansion culture technology is large in general volume, relatively complex in process, high in cost and inconvenient in moving and running when being used for river (lake) water treatment, and the treatment efficiency is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an ultrafiltration-reverse osmosis membrane method in-situ culture river treatment system and method, and provides a device which has small occupied area, easy operation, low operation cost and good treatment effect and is suitable for the treatment of river water pollution.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an ultrafiltration-reverse osmosis membrane method in-situ culture river course treatment system comprises a pretreatment system, an ultrafiltration system, a reverse osmosis system, a pure water collection system, a culture expansion system, a throwing system and a matched system;
The pretreatment system comprises a grid, a lifting pump and a self-cleaning filter, and river water treated by the pretreatment system enters an ultrafiltration system;
the ultrafiltration system comprises an ultrafiltration device and a backwashing device, and concentrated microorganisms are separated and extracted from ultrafiltration concentrated water and backwashing liquid of the ultrafiltration system, and enter a culture expansion system;
The reverse osmosis system comprises a cartridge filter, a reverse osmosis device and a cleaning device, wherein nutrients in concentrated river water of the reverse osmosis system are used as nutrient sources for microbial cultivation;
the expanding culture system comprises an expanding culture device and an aeration device;
the throwing system comprises a microbial agent throwing device, and is used for throwing the microbial agent obtained by culturing the expanding culture system into river water;
the matching system comprises an electric automatic control system;
The lifting pump, the self-cleaning filter, the ultrafiltration device, the cartridge filter and the reverse osmosis device are all connected with the electric automatic control system.
Further, a water inlet flowmeter for controlling water inlet is arranged on a pipeline connected with the self-cleaning filter by the lifting pump.
Further, the average pore diameter of the ultrafiltration membrane wires of the ultrafiltration device is 0.01-0.1 mu m.
Further, the reverse osmosis membrane wire average pore size of the reverse osmosis device is about 0.001 μm.
Further, a backwash flowmeter for controlling backwash is arranged on a pipeline connected with the backwash device and the ultrafiltration system.
An ultrafiltration-reverse osmosis membrane method in-situ culture river course treatment method comprises the following steps:
(1) Pretreating the river water by using the river water as a water source through a pretreatment system to remove impurities and particulate matters in the river water;
(2) Separating and extracting concentrated microorganisms from ultrafiltration concentrated water and reverse washing liquid of the ultrafiltration system, and sending the concentrated microorganisms to an expansion culture device of an expansion culture system;
(3) The effluent of the ultrafiltration system is sent to a reverse osmosis system, the reverse osmosis system concentrates organic and inorganic nutrients in river water, and the concentrated solution is sent to a spreading and cultivating device of a spreading and cultivating system to be used as a nutrient source for microorganism spreading and cultivating;
(4) Adjusting the aeration device, and performing in-situ expansion culture on the concentrated microorganism concentrated solution in the expansion culture device, so as to realize continuous production of microorganism stock solution, and expand and increase the concentration and content of microorganisms;
(5) And adding the microbial agent obtained by culturing the expansion culture system into the river water by utilizing a throwing system so as to purify the water quality of the river water.
The invention has the beneficial effects that:
1. The membrane process adopts ultrafiltration-reverse osmosis double-membrane process, has the advantages of maximum effective membrane area in unit volume, highest working efficiency, small occupied area, large filling density, simple structure, convenient operation and the like, and has the advantages of normal temperature operation in the separation process, no phase change, energy conservation and no secondary pollution. The equipment occupies less space, the operation period is short, and the installation period is short.
2. In-situ microorganism expansion culture, in-situ utilization of pollutants in polluted river water as a nutrient source, continuous and stable expansion culture of seed strains is carried out, so that microorganism stock solution is continuously produced, the concentration and content of microorganisms are expanded and increased, the microorganism expansion culture can be continuously carried out, and compared with the traditional technology, the operation is simpler, and the production cost is lower. And finally, the purposes of purifying the river water quality and treating the river water pollution are realized by applying and putting the river water source.
Drawings
FIG. 1 is a schematic flow chart of an ultrafiltration-reverse osmosis membrane method in-situ river channel treatment method.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The system comprises a pretreatment system, an ultrafiltration system, a reverse osmosis system, a pure water collection system, a culture expansion system, a throwing system and a matched system, wherein the pretreatment system comprises a grid, a lifting pump and a self-cleaning filter, a water inlet flowmeter for controlling water inlet is arranged on a pipeline connecting the lifting pump and the self-cleaning filter, and river water treated by the pretreatment system enters the ultrafiltration system.
The ultrafiltration system comprises an ultrafiltration device and a backwashing device, wherein the average pore diameter of ultrafiltration membrane wires of the ultrafiltration device is 0.01-0.1 mu m, a unique rotary-cut flow hydraulic runner is adopted in the ultrafiltration part, microorganisms in river water and the surfaces of the membrane wires move in opposite directions, and the concentration multiple and the microorganism content are greatly improved. The pipeline connecting the backwashing device and the ultrafiltration system is provided with a backwashing flowmeter for controlling backwashing, concentrated microorganisms are separated and extracted from ultrafiltration concentrated water and backwashing liquid of the ultrafiltration system, the concentrated microorganisms enter the culture expansion system, and effluent water of the ultrafiltration system enters the reverse osmosis system.
The reverse osmosis system comprises a cartridge filter, a reverse osmosis device and a cleaning device, wherein the average pore diameter of reverse osmosis membrane wires of the reverse osmosis device is about 0.001 mu m, and the reverse osmosis part further concentrates organic matters, N, P and other nutrients in river water by a certain pressure to serve as nutrient sources for microorganism cultivation;
the system comprises a culture expansion device and an aeration device, wherein the throwing system comprises a microbial agent throwing device for throwing the microbial agent obtained by culturing the culture expansion system into river water;
The supporting system comprises an electric automatic control system, and the lifting pump, the self-cleaning filter, the ultrafiltration device, the security filter and the reverse osmosis device are all connected with the electric automatic control system.
The method for treating the in-situ spread culture river channel treatment system by using the ultrafiltration-reverse osmosis membrane method comprises the following steps:
(1) Pretreating the river water by using the river water as a water source through a pretreatment system to remove impurities and particulate matters in the river water;
(2) Separating and extracting concentrated microorganisms from ultrafiltration concentrated water and reverse washing liquid of the ultrafiltration system, and sending the concentrated microorganisms to an expansion culture device of an expansion culture system;
(3) The effluent of the ultrafiltration system is sent to a reverse osmosis system, the reverse osmosis system concentrates organic and inorganic nutrients in river water, and the concentrated solution is sent to a spreading and cultivating device of a spreading and cultivating system to be used as a nutrient source for microorganism spreading and cultivating;
(4) Adjusting the aeration device, and performing in-situ expansion culture on the concentrated microorganism concentrated solution in the expansion culture device, so as to realize continuous production of microorganism stock solution, and expand and increase the concentration and content of microorganisms;
(5) And adding the microbial agent obtained by culturing the expansion culture system into the river water by utilizing a throwing system so as to purify the water quality of the river water.
In summary, by the treatment system and the treatment method, the indexes of chemical oxygen demand, total phosphorus, total nitrogen and ammonia nitrogen after river and lake water treatment can be obviously improved. Pure water generated by ultrafiltration-reverse osmosis can be recycled, and water resource value is generated.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (6)

1.一种超滤-反渗透膜法原位扩培河道治理系统，其特征在于：该系统包括预处理系统、超滤系统、反渗透系统、纯水收集系统、扩培系统、投放系统及配套系统；1. An ultrafiltration-reverse osmosis membrane method in-situ cultivation river management system, characterized in that the system includes a pretreatment system, an ultrafiltration system, a reverse osmosis system, a pure water collection system, a cultivation system, a delivery system and a supporting system; 所述预处理系统包括格栅、提升泵和自清洗过滤器，经过预处理系统处理的河水进入超滤系统；The pretreatment system includes a grid, a lifting pump and a self-cleaning filter, and the river water treated by the pretreatment system enters the ultrafiltration system; 所述超滤系统包括超滤装置和反洗装置，从超滤系统的超滤浓水和反洗液中分离提取浓缩微生物；所述浓缩微生物进入扩培系统；所述超滤系统的出水进入反渗透系统；The ultrafiltration system includes an ultrafiltration device and a backwash device, which separates and extracts concentrated microorganisms from the ultrafiltration concentrated water and backwash liquid of the ultrafiltration system; the concentrated microorganisms enter the expansion system; the effluent of the ultrafiltration system enters the reverse osmosis system; 所述反渗透系统包括保安过滤器、反渗透装置及清洗装置；所述反渗透系统浓缩河水中的营养物作为微生物扩培的营养源；所述反渗透系统的出水进入纯水收集系统；The reverse osmosis system includes a security filter, a reverse osmosis device and a cleaning device; the reverse osmosis system concentrates nutrients in river water as a nutrient source for microbial expansion; the effluent from the reverse osmosis system enters a pure water collection system; 所述扩培系统包括扩培装置、曝气装置；The expansion system includes an expansion device and an aeration device; 所述投放系统包括微生物菌剂投加装置，用以将所述扩培系统培养得到的微生物菌剂投加至河水中；The delivery system includes a microbial agent delivery device, which is used to deliver the microbial agent cultured by the expansion system into the river water; 所述配套系统包括电气自控系统；The supporting system includes an electrical automatic control system; 所述提升泵、自清洗过滤器、超滤装置、保安过滤器、反渗透装置，扩培装置、曝气装置、投加装置、纯水收集装置均与电气自控系统连接。The lifting pump, self-cleaning filter, ultrafiltration device, safety filter, reverse osmosis device, culture expansion device, aeration device, dosing device and pure water collection device are all connected with the electric automatic control system. 2.一种如权利要求1所述的超滤-反渗透膜法原位扩培河道治理系统，其特征在于：所述提升泵与自清洗过滤器相连管道上设有控制进水的进水流量计。2. An ultrafiltration-reverse osmosis membrane in-situ expansion and cultivation river channel management system as described in claim 1, characterized in that a water inlet flow meter for controlling water inlet is provided on the pipeline connecting the lift pump and the self-cleaning filter. 3.一种如权利要求1所述的超滤-反渗透膜法原位扩培河道治理系统，其特征在于：所述超滤装置的超滤膜丝平均孔径为0.01-0.1μm。3. An ultrafiltration-reverse osmosis membrane method in-situ expansion and cultivation river channel management system as described in claim 1, characterized in that the average pore size of the ultrafiltration membrane fibers of the ultrafiltration device is 0.01-0.1 μm. 4.一种如权利要求1所述的超滤-反渗透膜法原位扩培河道治理系统，其特征在于：所述反渗透装置的反渗透膜丝平均孔径约为0.001μm。4. An ultrafiltration-reverse osmosis membrane method in-situ expansion and cultivation river channel management system as described in claim 1, characterized in that the average pore size of the reverse osmosis membrane fibers of the reverse osmosis device is about 0.001 μm. 5.一种如权利要求1所述的超滤-反渗透膜法原位扩培河道治理系统，其特征在于：所述反洗装置与超滤系统相连管道上设有控制反洗的反洗流量计。5. An ultrafiltration-reverse osmosis membrane method in-situ expansion and cultivation river channel management system as described in claim 1, characterized in that a backwash flowmeter for controlling backwashing is provided on the pipeline connecting the backwash device and the ultrafiltration system. 6.一种利用权利要求1-5任意一项所述的超滤-反渗透膜法原位扩培河道治理系统进行的河道治理方法，其特征在于：所述方法包括以下步骤：6. A method for river regulation using the ultrafiltration-reverse osmosis membrane in-situ cultivation river regulation system according to any one of claims 1 to 5, characterized in that the method comprises the following steps: (1).利用河水作为水源，通过预处理系统对河水进行预处理，去除河水中的杂质及颗粒物；(1) Using river water as a water source, pre-treating the river water through a pre-treatment system to remove impurities and particulate matter in the river water; (2).经过预处理系统处理的河水进入超滤系统；从超滤系统的超滤浓水和反洗液中分离提取浓缩微生物,将浓缩微生物送入扩培系统的扩培装置；(2) The river water treated by the pretreatment system enters the ultrafiltration system; concentrated microorganisms are separated and extracted from the ultrafiltration concentrated water and backwash liquid of the ultrafiltration system, and the concentrated microorganisms are sent to the expansion device of the expansion system; (3).将超滤系统的出水送入反渗透系统；所述反渗透系统将河水中的有机及无机营养物浓缩，将浓缩液送入扩培系统的扩培装置，作为微生物扩培的营养源；反渗透系统过滤得到的出水进入纯水收集系统；(3) The effluent from the ultrafiltration system is sent to the reverse osmosis system; the reverse osmosis system concentrates the organic and inorganic nutrients in the river water, and the concentrated solution is sent to the expansion device of the expansion system as a nutrient source for microbial expansion; the effluent from the reverse osmosis system is filtered into the pure water collection system; (4).调整曝气装置，在扩培装置中将浓缩后微生物浓液进行原位扩培，从而实现连续生产微生物原液，扩大和增加微生物的浓度和含量；(4) Adjust the aeration device and carry out in-situ culture of the concentrated microbial concentrate in the culture expansion device, thereby achieving continuous production of microbial concentrate and expanding and increasing the concentration and content of microorganisms; (5).利用投放系统将所述扩培系统培养得到的微生物菌剂投加至河水中以净化河水水质。(5) Using the delivery system, the microbial agent cultured by the expansion system is added into the river water to purify the river water quality.
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