Sea sand desalination wastewater treatment device

Abstract

The utility model discloses a kind of sea sand desalination wastewater treatment devices, it is related to sand washing wastewater treatment field, including sedimentation tank, backwashing filter tank, ionization tank and spray tower;Sedimentation tank can preliminarily deposit large particle impurities and silt in sea sand desalination wastewater;Backwashing filter tank includes filter tank body and is arranged by the inside to the outside in turn and is arranged coarse filter cylinder, middle filter cylinder and fine filter cylinder;Ionization tank includes ionization tank body, electrode group and power supply;Spray tower can spray fire alkali solution to absorb chlorine gas and convert it into salt, and the gas outlet of spray tower is connected with hydrogen recovery device.The utility model of a kind of sea sand desalination wastewater treatment device has good backwashing effect, and can effectively remove heavy metal ions such as chlorine ion and magnesium ion in sea sand desalination wastewater.

Claims

1. A sea sand desalination wastewater treatment apparatus, characterized by, include: Sedimentation tank (1), wherein the sedimentation tank (1) can initially settle large particulate impurities and silt in the sea sand desalination wastewater; A backwash filter tank (2) includes a filter tank body (21) and a coarse filter cylinder (22), a medium filter cylinder (23), and a fine filter cylinder (24) arranged sequentially from the inside to the outside. The coarse filter cylinder (22), the medium filter cylinder (23), and the fine filter cylinder (24) are respectively provided with filter holes of decreasing diameter, and all three are vertically fixed to the inner bottom wall of the filter tank body (21). The top of the filter tank body (21) is provided with a filter hole connected to the coarse filter cylinder. Wastewater inlets are located at the top and bottom of the filter cylinder (22). The wastewater inlets are connected to the sedimentation tank (1) via a water supply pipe (101). A water outlet is provided on the outer wall of the filter tank (21), and a backwash water inlet is provided at the bottom of its outer wall. The backwash water inlet is connected to the water supply unit (3) via a water inlet pipe (102). A sewage outlet is provided at the bottom of the filter tank (21) corresponding to the coarse filter cylinder (22). The sewage outlet is connected to and connected to a sewage pipe (103). An ionization tank (4) is provided, comprising an ionization tank body (41), an electrode assembly (42), and a power supply. The ionization tank body (41) is provided with an ionized water inlet and a purified water outlet. The ionized water inlet is connected to the outlet through an intermediate pipe (104). The purified water outlet is connected to and connected to a drainage pipe (105). A filter screen is installed inside the drainage pipe (105). The electrode assembly (42) includes an anode (421), a cathode (422), and an ion membrane (423) arranged between the two. The anode (421), cathode (422), and ion membrane (423) are all fixed inside the ionization tank body (41). The positive terminal of the power supply is connected to the anode (421), and the negative terminal of the power supply is connected to the cathode (422) to form precipitates of magnesium ions and heavy metal ions in the sea sand desalination wastewater. An air outlet is provided at the top of the ionization tank body (41). The spray tower (5) has its inlet connected to the outlet via a gas pipeline (106). The spray tower (5) sprays caustic soda solution to absorb chlorine gas and convert it into salt. The outlet of the spray tower (5) is connected to and connected to a hydrogen recovery device.

2. A sea sand desalination wastewater treatment apparatus according to claim 1, characterized in that, The coarse filter cylinder (22), the medium filter cylinder (23), and the fine filter cylinder (24) are all cylindrical filter screens, and the pore sizes are 4.75mm, 0.71mm, and 0.125mm, respectively.

3. A sea sand desalination wastewater treatment apparatus according to claim 2, wherein The middle area between the coarse filter cylinder (22) and the medium filter cylinder (23), and the middle area between the fine filter cylinder (24) and the medium filter cylinder (23) can be filled with quartz sand filter particles.

4. A sea sand desalination wastewater treatment apparatus according to claim 1, wherein The electrode group (42) is a multiple group, and the multiple groups of electrode groups (42) are arranged sequentially in the ionization tank (4), and adjacent groups of electrode groups (42) are separated by the ion membrane (423).

5. A sea sand desalination wastewater treatment apparatus according to claim 4, wherein The anode (421) is a titanium mesh with a polyurethane film covering its surface, and the cathode (422) is a titanium mesh.

6. A sea sand desalination wastewater treatment apparatus according to claim 1, wherein The backwash filter tank (2) further includes a stirring assembly (25), which comprises: A stirring shaft (251) is axially disposed in the inner cavity of the coarse filter cylinder (22); A stirring blade (252), wherein there are multiple stirring blades (252) and all of them are fixed on the stirring shaft (251); A stirring motor (253) is fixed to the top of the outer side of the filter tank body (21), and its output shaft passes through the filter tank body (21) and is fixedly connected to the stirring shaft (251).

7. A sea sand desalination wastewater treatment apparatus according to claim 1, wherein It also includes a filter tank support frame (6), which is arranged at the bottom of the filter tank body (21) to support the filter tank body (21), and the legs of the filter tank support frame (6) abut against the ground.

8. A sea sand desalination wastewater treatment apparatus according to claim 5, wherein It also includes a controller (7), which is mounted on the filter tank support frame (6) and electrically connected to the stirring motor (253).

9. A sea sand desalination wastewater treatment apparatus according to claim 8, wherein Solenoid valves are installed on the water supply pipe (101), water inlet pipe (102), sewage discharge pipe (103), intermediate pipe (104), drainage pipe (105) and gas supply pipe (106), and the solenoid valves are electrically connected to the controller (7).

10. A sea sand desalination wastewater treatment apparatus according to claims 1-9, characterized in that, The spray tower (5) is a vertical spray tower.

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