CN-224226825-U - Deep emission reduction treatment system based on softening and multistage filtration concentration

CN224226825UCN 224226825 UCN224226825 UCN 224226825UCN-224226825-U

Abstract

The utility model discloses a deep emission reduction treatment system based on softening and multistage filtering concentration, which comprises a high-density sedimentation tank, a filter, a raw water tank and a reverse osmosis device, wherein the high-density sedimentation tank is used for removing silicon from raw water and softening the raw water, the filter is used for filtering the softened raw water, a first reverse osmosis membrane is used for carrying out primary concentration on the raw water, and a second reverse osmosis membrane is used for carrying out secondary concentration. The method comprises the steps of firstly softening raw water through a high-density sedimentation tank to remove hardness impurities which can influence subsequent concentration treatment, filtering the softened raw water through a filter to remove suspended matter impurities which can influence the subsequent concentration treatment, respectively carrying out primary concentration and secondary concentration on the raw water through a first reverse osmosis membrane and a second reverse osmosis membrane which are arranged in series, and lifting high-power concentration in a multistage reverse osmosis concentration mode to finally realize the deep emission reduction treatment of multistage filtration concentration.

Inventors

GAO RAN
SU ZHIFENG
CAO ZHIQIANG
Meng Zu
FAN BIN

Assignees

深圳能源资源综合开发有限公司
东莞深能源樟洋电力有限公司

Dates

Publication Date: 20260512
Application Date: 20250305

Claims (7)

1. Deep emission reduction processing system based on softening and multistage filtration concentration is characterized by comprising: The high-density sedimentation tank is used for removing silicon from raw water and softening the raw water; a filter for filtering the softened raw water; A raw water tank for receiving and storing filtered raw water; The reverse osmosis device comprises a first reverse osmosis membrane and a second reverse osmosis membrane which are arranged in series, the first reverse osmosis membrane is connected with the raw water tank, the first reverse osmosis membrane is provided with a first water producing end and a first water concentrating end, the first water concentrating end is used for carrying out primary concentration on raw water and sending the raw water into the second reverse osmosis membrane, the second reverse osmosis membrane is provided with a second water producing end and a second water concentrating end, the second water concentrating end is used for carrying out secondary concentration on the raw water after primary concentration and discharging the obtained concentrated water, and the second water producing end is used for discharging produced water flowing through the first water producing end and the second reverse osmosis membrane.
2. The deep emission reduction treatment system based on softening collaborative multi-stage filtration concentration according to claim 1, wherein the raw water tank is communicated with the reverse osmosis device through a raw water conveying pipeline, a water production end is connected with a water production discharge pipeline, the water production discharge pipeline is provided with a water production control valve, the concentrated water end is connected with a concentrated water discharge pipeline, and the concentrated water discharge pipeline is provided with a concentrated water control valve.
3. The deep emission reduction treatment system based on softening collaborative multistage filtration concentration according to claim 2, wherein the raw water conveying pipeline is provided with a cartridge filter for filtering impurities exceeding the pore size of a filter core in raw water passing through the raw water conveying pipeline.
4. The deep emission reduction treatment system based on softening collaborative multi-stage filtration concentration according to claim 3, wherein a booster pump is arranged between the raw water tank and the cartridge filter, the booster pump is used for pumping raw water in the raw water tank into the cartridge filter, and a high-pressure plunger pump is arranged between the cartridge filter and the reverse osmosis device and is used for pumping the raw water filtered by the cartridge filter into the reverse osmosis device.
5. The deep emission reduction treatment system based on softening collaborative multistage filtration concentration according to claim 4, further comprising a reducing agent adding component, a scale inhibitor adding component and a bactericide adding component, wherein the reducing agent adding component is used for adding reducing agent to the raw water conveying pipeline, the adding position is located between the booster pump and the security filter, the scale inhibitor adding component is used for adding scale inhibitor matched with the reverse osmosis device to the raw water conveying pipeline, the adding position is located between the booster pump and the security filter ; , the bactericide adding component is used for adding bactericide to the raw water conveying pipeline, and the adding position is located between the booster pump and the security filter.
6. The deep emission reduction treatment system based on softening collaborative multi-stage filtration concentration according to claim 2, wherein a produced water cleaning pipeline is connected between the raw water tank and the produced water discharge pipeline, a connecting part is positioned between the produced water end and the produced water control valve, the produced water cleaning pipeline is provided with a produced water cleaning valve, a concentrated water cleaning pipeline is connected between the raw water tank and the concentrated water discharge pipeline, a connecting part is positioned between the concentrated water end and the concentrated water control valve, the concentrated water cleaning pipeline is provided with a concentrated water cleaning valve, the produced water cleaning pipeline is used for cleaning the reverse osmosis device from the produced water end and discharging the produced cleaning wastewater through the produced water discharge pipeline, and the concentrated water cleaning pipeline is used for cleaning the reverse osmosis device from the concentrated water end and discharging the produced cleaning wastewater through the concentrated water discharge pipeline.
7. The deep emission reduction treatment system based on softening collaborative multi-stage filtration concentration according to claim 4, wherein a concentrated water return pipeline is further arranged between the concentrated water discharge pipeline and the raw water conveying pipeline, a connection part of the concentrated water return pipeline and the raw water conveying pipeline is positioned between the cartridge filter and the high-pressure plunger pump, and the concentrated water return pipeline is provided with a concentrated water return control valve.

Description

Deep emission reduction treatment system based on softening and multistage filtration concentration Technical Field The utility model relates to the technical field of wastewater treatment systems, in particular to a deep emission reduction treatment system based on softening and multistage filtration concentration. Background Reverse Osmosis (RO) membrane separation technology is used as an efficient water treatment means and is widely applied to the field of industrial wastewater concentration treatment. Traditional single-stage reverse osmosis systems achieve separation of solutes from solvents by applying high pressure to cause water molecules to penetrate a permselective membrane. However, industrial wastewater often contains various impurities such as high turbidity, high hardness, high salinity and the like, which is unfavorable for subsequent concentration treatment. In addition, when treating industrial wastewater with high salinity, high organic matter content or special pollutants, a single reverse osmosis membrane system has obvious technical bottlenecks that (1) the operating pressure requirement increases exponentially with the increase of the inlet water concentration, so that the energy consumption is increased suddenly, (2) the concentration polarization phenomenon aggravates the risk of causing the scaling of the membrane surface, so that the water permeability flux is attenuated, and (3) the concentration multiple is limited by the highest pressure tolerance of the membrane element, so that the high-power concentration target is difficult to realize. In view of the foregoing, it would be desirable to provide a deep abatement treatment system based on softening in conjunction with multi-stage filtration concentration that overcomes the above-described drawbacks. Disclosure of utility model The utility model aims to provide a deep emission reduction treatment system based on softening and multistage filtration concentration, which aims to solve the problems that a single reverse osmosis membrane system is easy to mix impurities and has poor concentration effect, and realize multistage filtration concentration effect. In order to achieve the above object, the present utility model provides a deep emission reduction treatment system based on softening and multistage filtration concentration, comprising: The high-density sedimentation tank is used for removing silicon from raw water and softening the raw water; a filter for filtering the softened raw water; A raw water tank for receiving and storing filtered raw water; The reverse osmosis device comprises a first reverse osmosis membrane and a second reverse osmosis membrane which are arranged in series, the first reverse osmosis membrane is connected with the raw water tank, the first reverse osmosis membrane is provided with a first water producing end and a first water concentrating end, the first water concentrating end is used for carrying out primary concentration on raw water and sending the raw water into the second reverse osmosis membrane, the second reverse osmosis membrane is provided with a second water producing end and a second water concentrating end, the second water concentrating end is used for carrying out secondary concentration on the raw water after primary concentration and discharging obtained concentrated water, and the second water producing end is used for discharging produced water flowing through the first water producing end and the second reverse osmosis membrane. In a preferred embodiment, the raw water tank is communicated with the reverse osmosis device through a raw water conveying pipeline, the water producing end is connected with a water producing discharge pipeline, the water producing discharge pipeline is provided with a water producing control valve, the concentrated water end is connected with a concentrated water discharge pipeline, and the concentrated water discharge pipeline is provided with a concentrated water control valve. In a preferred embodiment, the raw water delivery pipe is provided with a cartridge filter for filtering impurities exceeding the size of the filter core aperture in the raw water passing through the raw water delivery pipe. In a preferred embodiment, a booster pump is arranged between the raw water tank and the cartridge filter, the booster pump is used for pumping raw water in the raw water tank into the cartridge filter, and a high-pressure plunger pump is arranged between the cartridge filter and the reverse osmosis device and is used for pumping raw water filtered by the cartridge filter into the reverse osmosis device. In a preferred embodiment, the device further comprises a reducing agent adding component, a scale inhibitor adding component and a bactericide adding component, wherein the reducing agent adding component is used for adding the reducing agent into the raw water conveying pipeline, the adding position is located between the booster pump and the security