Movable high-efficiency purification integrated device and method for high-turbidity wastewater

Abstract

The invention relates to a mobile high-efficiency purification integrated device and method for high-turbidity wastewater. A pretreatment unit, a high-efficiency cyclone desanding unit, a high-efficiency oil removal unit, a middle water tank, a deep filtration unit, a filtration water tank, an activated carbon adsorption unit, an ultraviolet disinfection unit and a clear water recycling unit which are connected in sequence are arranged on a mobile platform; the PLC self-control unit is respectively connected with the efficient cyclone desanding unit, the efficient oil removal unit, the deep filtration unit, the activated carbon adsorption unit, the ultraviolet disinfection unit and the clear water recycling unit, and automatically controls the operation of the units; the PLC automatic control unit is integrated with a mobile phone APP applet in a matched mode, and remote monitoring and operation are achieved. The device provided by the invention is small in size, movable, simple to run and operate and low in investment and operation cost, the wastewater is recycled after being purified, and efficient purification of the motor vehicle surface cleaning wastewater and resource recycling are realized.

Description

Technical Field

[0001] The present invention relates to the field of wastewater treatment, and in particular to a mobile high-turbidity wastewater efficient purification integrated device and method. Background Art

[0002] Dust from roads and construction sites is a significant source of atmospheric particulate matter pollution. To effectively improve atmospheric quality, control dust emissions, and prevent PM2.5 and other particulate matter pollution, a "six-percent" approach has been implemented for dust pollution control at construction sites. One key element is the 100% washing of transport vehicles. This 100% washing of transport vehicles requires the installation of automatic cleaning equipment or high-pressure washing facilities at entrances and exits to ensure that vehicles are free of mud and dirt, and a washing log is maintained. Regarding washwater wastewater, most construction sites and parking lots utilize fixed washwater treatment facilities to reuse the wastewater, primarily using coagulation and sedimentation. However, this method requires the construction of fixed facilities and the purchase of coagulation and sedimentation agents. First, it occupies a large area, has complex operation and maintenance, and requires dedicated personnel; secondly, the effluent water quality is not good, and it has almost no removal effect on oil droplets, bacteria, etc., and it is difficult to meet the "Urban Wastewater Recycling and Urban Miscellaneous Water Quality" (GBT18920-2020) standards; thirdly, after the construction project is completed or the production plant is shut down and needs to be relocated, the above facilities have to be abandoned, resulting in waste of resources and increased overall costs.

[0003] Therefore, if an integrated, mobile, economical, and efficient high-turbidity wastewater purification device can be developed for car wash wastewater in construction sites, parking lots, etc., the high-turbidity wastewater can be efficiently purified and reused, and the wastewater purification device can be made mobile and reused. While reducing dust pollution and protecting the atmospheric environment, resources can be reused, which will have significant environmental, economic, and social benefits. Summary of the Invention

[0004] In response to the technical problems existing in the prior art, the purpose of the present invention is to provide a mobile high-turbidity wastewater efficient purification integrated device and method. This device and method can achieve efficient purification and water resource reuse of high-turbidity car wash wastewater in construction sites, parking lots, etc., save water resource consumption, and realize the device's mobility and reuse at any time, ultimately achieving cost reduction, efficiency improvement, pollution reduction and carbon reduction for enterprises.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A mobile high-turbidity wastewater high-efficiency purification device, the mobile platform is equipped with a pretreatment unit, a high-efficiency cyclone sand removal unit, a high-efficiency oil removal unit, an intermediate water tank, a deep filtration unit, a filtered water tank, an activated carbon adsorption unit, an ultraviolet disinfection unit and a clean water reuse unit connected in sequence;

[0007] The PLC automatic control unit is connected to the high-efficiency cyclone sand removal unit, high-efficiency oil removal unit, deep filtration unit, activated carbon adsorption unit, ultraviolet disinfection unit and clean water reuse unit respectively, and automatically controls their operation; the PLC automatic control unit is equipped with an integrated mobile phone APP applet to realize remote monitoring and operation.

[0008] Among them, the pretreatment unit is a screen with a pore size of 1-3mm, which is placed at the front end of the water inlet pipe of the high-efficiency cyclone sand removal unit and placed in the regulating water tank.

[0009] The high-efficiency cyclone sand removal unit includes a water inlet pump and a high-efficiency cyclone sand removal unit, which are connected in sequence. A detachable cleaning sand collecting hopper is installed at the bottom of the high-efficiency cyclone sand removal unit.

[0010] The high-efficiency oil removal unit is a high-oil-absorption modified fiber ball filter with a filling thickness of 10-30cm and a filtration speed of 20-60m / h.

[0011] The deep filtration unit includes a water inlet pump and a flexible ceramic membrane direct filtration component, which are connected in sequence; the ceramic membrane opening rate in the flexible ceramic membrane direct filtration component is 80-85%, and the membrane flux is 60-100L / m 2 h, effective membrane area 18-20m 2 / branch membrane.

[0012] The activated carbon adsorption unit includes a water inlet pump, an electric valve and an activated carbon filter tank, which are connected in sequence; the activated carbon should have a specific surface area of ​​≥1000m 2 / g columnar activated carbon, filling height 20-40cm, filtration speed 10-20m / h.

[0013] UV disinfection unit Choose a UV disinfection unit, equipped with a low-pressure, high-intensity UV lamp, and install it directly on the water outlet pipe.

[0014] An override pipe is connected between the filtered water tank and the ultraviolet disinfection unit. The override pipe is installed after the water inlet pump of the activated carbon adsorption unit. An electric valve is installed on the override pipe, which automatically controls the connection and closing of the override pipe.

[0015] The clean water recycling unit includes a clean water tank, a hydrophilic pump, a rubber coil, and a high-pressure spray gun.

[0016] A mobile high-efficiency purification method for highly turbid wastewater, using the device, comprises the following steps:

[0017] Car wash wastewater and ground washing wastewater flow into the regulating pool to balance the water quality and water volume. It is then pumped through the pretreatment unit to remove large particles of debris. After being pressurized by the pump, it enters the high-efficiency cyclone sand removal unit at high speed to separate and remove some sediment. The sediment falls into the sand collecting hopper at the bottom of the desander. The water flows into the high-efficiency oil removal unit from the upper outlet of the high-efficiency cyclone sand removal unit. The grease and some sediment in the water are filtered and removed. The deoiled water flows into the intermediate water tank.

[0018] The water in the intermediate water tank is pressurized by the pump and enters the deep filtration unit, where suspended solids, organic matter and grease in the wastewater are further removed. The purified water flows into the filter water tank and is then pumped into the activated carbon adsorption unit, where suspended solids, organic matter and grease in the water are deeply purified and removed. The purified water flows through the pipe equipped with the ultraviolet disinfection unit, where bacteria and viruses in the water are killed. The purified water then flows into the clean water tank for storage.

[0019] If the water quality after being treated by the deep filtration unit meets the use requirements, the solenoid valve entering the activated carbon adsorption unit will be closed, and the solenoid valve of the bypass pipe will be opened. The water will directly bypass the activated carbon adsorption unit and enter the ultraviolet disinfection unit. After disinfection, it will flow into the clean water tank for storage and standby use; the deep filtration unit and the activated carbon adsorption unit will be backwashed regularly to restore the purification function, and the backwash wastewater will be discharged into the regulating water tank.

[0020] The present invention has the following advantages:

[0021] 1) The equipment occupies a small area, which is only 1 / 3 to 1 / 6 of the area occupied by the traditional coagulation and sedimentation process; it is easy to install and construct, with flexible placement and no need to build fixed structures, short reaction time and fast processing speed.

[0022] 2) The wastewater purification efficiency is high, the turbidity removal rate is ≥99.5%, the petroleum removal rate is ≥90%, and the sterilization rate is ≥99.9%. After purification, the wastewater meets the relevant index standard requirements of "Urban Wastewater Recycling and Urban Miscellaneous Water Quality" (GBT18920-2020).

[0023] 3) Realize wastewater reuse, reduce enterprise water resource consumption, and lower enterprise operating costs; the integrated equipment is movable and can be reused, reducing resource consumption in the construction of traditional coagulation and sedimentation equipment and saving enterprise costs.

[0024] 4) The equipment is easy to operate and maintain, and does not require coagulation and precipitation agents, saving operating costs. The entire set of equipment is automatically controlled and can be remotely controlled by APP, without the need for human supervision, achieving a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0026] This embodiment provides a mobile high-turbidity wastewater efficient purification device, such as Figure 1 As shown, the mobile platform is provided with a pretreatment unit, a high-efficiency cyclone sand removal unit, a high-efficiency oil removal unit, an intermediate water tank, a deep filtration unit, a filtered water tank, an activated carbon adsorption unit, an ultraviolet disinfection unit and a clean water reuse unit connected in sequence;

[0027] The PLC automatic control unit is connected to the high-efficiency cyclone sand removal unit, high-efficiency oil removal unit, deep filtration unit, activated carbon adsorption unit, ultraviolet disinfection unit and clean water reuse unit respectively, and automatically controls their operation; the PLC automatic control unit is equipped with an integrated mobile phone APP applet to realize remote monitoring and operation.

[0028] Among them, the pretreatment unit is a screen with a pore size of 1-3mm, which is placed at the front end of the water inlet pipe of the high-efficiency cyclone sand removal unit and placed in the regulating water tank.

[0029] The high-efficiency cyclone sand removal unit includes a water inlet pump and a high-efficiency cyclone sand removal unit, which are connected in sequence. A detachable cleaning sand collecting hopper is installed at the bottom of the high-efficiency cyclone sand removal unit.

[0030] The high-efficiency oil removal unit is a high-oil-absorption modified fiber ball filter with a filling thickness of 10-30cm and a filtration speed of 20-60m / h.

[0031] The deep filtration unit includes a water inlet pump and a flexible ceramic membrane direct filtration component, which are connected in sequence; the ceramic membrane opening rate in the flexible ceramic membrane direct filtration component is 80-85%, and the membrane flux is 60-100L / m 2 h, effective membrane area 18-20m 2 / branch membrane.

[0032] The activated carbon adsorption unit includes a water inlet pump, an electric valve and an activated carbon filter tank, which are connected in sequence; the activated carbon should have a specific surface area of ​​≥1000m 2 / g columnar activated carbon, filling height 20-40cm, filtration speed 10-20m / h.

[0033] UV disinfection unit Choose a UV disinfection unit, equipped with a low-pressure, high-intensity UV lamp, and install it directly on the water outlet pipe.

[0034] An override pipe is connected between the filtered water tank and the ultraviolet disinfection unit. The override pipe is installed after the water inlet pump of the activated carbon adsorption unit. An electric valve is installed on the override pipe, which automatically controls the connection and closing of the override pipe.

[0035] The clean water recycling unit includes a clean water tank, a hydrophilic pump, a rubber coil, and a high-pressure spray gun.

[0036] A mobile high-efficiency purification method for highly turbid wastewater, using the device, comprises the following steps:

[0037] Car wash wastewater and ground washing wastewater flow into the regulating pool to balance the water quality and water volume. It is then pumped through the pretreatment unit to remove large particles of debris. After being pressurized by the pump, it enters the high-efficiency cyclone sand removal unit at high speed to separate and remove some sediment. The sediment falls into the sand collecting hopper at the bottom of the desander. The water flows into the high-efficiency oil removal unit from the upper outlet of the high-efficiency cyclone sand removal unit. The grease and some sediment in the water are filtered and removed. The deoiled water flows into the intermediate water tank.

[0038] The water in the intermediate water tank is pressurized by the pump and enters the deep filtration unit, where suspended solids, organic matter and grease in the wastewater are further removed. The purified water flows into the filter water tank and is then pumped into the activated carbon adsorption unit, where suspended solids, organic matter and grease in the water are deeply purified and removed. The purified water flows through the pipe equipped with the ultraviolet disinfection unit, where bacteria and viruses in the water are killed. The purified water then flows into the clean water tank for storage.

[0039] If the water quality after being treated by the deep filtration unit meets the use requirements, the solenoid valve entering the activated carbon adsorption unit will be closed, and the solenoid valve of the bypass pipe will be opened. The water will directly bypass the activated carbon adsorption unit and enter the ultraviolet disinfection unit. After disinfection, it will flow into the clean water tank for storage and standby use; the deep filtration unit and the activated carbon adsorption unit will be backwashed regularly to restore the purification function, and the backwash wastewater will be discharged into the regulating water tank.

Claims

1. A mobile high-efficiency integrated purification device for high-turbidity wastewater, characterized by: The mobile platform is equipped with a pretreatment unit, a high-efficiency cyclone sand removal unit, a high-efficiency oil removal unit, an intermediate water tank, a deep filtration unit, a filtered water tank, an activated carbon adsorption unit, an ultraviolet disinfection unit and a clean water reuse unit, which are connected in sequence; The PLC automatic control unit is connected to the high-efficiency cyclone sand removal unit, high-efficiency oil removal unit, deep filtration unit, activated carbon adsorption unit, ultraviolet disinfection unit and clean water reuse unit respectively, and automatically controls their operation; the PLC automatic control unit is equipped with an integrated mobile phone APP applet to realize remote monitoring and operation.

2. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: The pretreatment unit is a screen with a pore size of 1-3 mm, which is placed at the front end of the water inlet pipe of the high-efficiency cyclone sand removal unit and placed in the regulating water tank.

3. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: The high-efficiency cyclone sand removal unit includes a water inlet pump and a high-efficiency cyclone sand removal unit, which are connected in sequence. A detachable cleaning sand collecting hopper is installed at the bottom of the high-efficiency cyclone sand removal unit.

4. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: The high-efficiency oil removal unit is a high-oil-absorption modified fiber ball filter with a filling thickness of 10-30cm and a filtration speed of 20-60m / h.

5. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: The deep filtration unit includes a water inlet pump and a flexible ceramic membrane direct filtration component, which are connected in sequence; the ceramic membrane opening rate in the flexible ceramic membrane direct filtration component is 80-85%, and the membrane flux is 60-100L / m 2 h, effective membrane area 18-20m 2 / branch membrane.

6. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: The activated carbon adsorption unit includes a water inlet pump, an electric valve and an activated carbon filter tank, which are connected in sequence; the activated carbon should have a specific surface area of ​​≥1000m 2 / g columnar activated carbon, filling height 20-40cm, filtration speed 10-20m / h.

7. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: UV disinfection unit Choose a UV disinfection unit, equipped with a low-pressure, high-intensity UV lamp, and install it directly on the water outlet pipe.

8. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: An override pipe is connected between the filtered water tank and the ultraviolet disinfection unit. The override pipe is installed after the water inlet pump of the activated carbon adsorption unit. An electric valve is installed on the override pipe, which automatically controls the connection and closing of the override pipe.

9. The mobile high-efficiency integrated purification device for highly turbid wastewater according to claim 1, characterized in that: The clean water recycling unit includes a clean water tank, a hydrophilic pump, a rubber coil, and a high-pressure spray gun.

10. A mobile high-efficiency purification method for highly turbid wastewater, characterized by: The device according to any one of claims 1 to 9 comprises the following steps: Car wash wastewater and ground washing wastewater flow into the regulating pool to balance the water quality and water volume. It is then pumped through the pretreatment unit to remove large particles of debris. After being pressurized by the pump, it enters the high-efficiency cyclone sand removal unit at high speed to separate and remove some sediment. The sediment falls into the sand collecting hopper at the bottom of the desander. The water flows into the high-efficiency oil removal unit from the upper outlet of the high-efficiency cyclone sand removal unit. The grease and some sediment in the water are filtered and removed. The deoiled water flows into the intermediate water tank. The water in the intermediate water tank is pressurized by the pump and enters the deep filtration unit, where suspended solids, organic matter and grease in the wastewater are further removed. The purified water flows into the filter water tank and is then pumped into the activated carbon adsorption unit, where suspended solids, organic matter and grease in the water are deeply purified and removed. The purified water flows through the pipe equipped with the ultraviolet disinfection unit, where bacteria and viruses in the water are killed. The purified water then flows into the clean water tank for storage. If the water quality after being treated by the deep filtration unit meets the use requirements, the solenoid valve entering the activated carbon adsorption unit will be closed, and the solenoid valve of the bypass pipe will be opened. The water will directly bypass the activated carbon adsorption unit and enter the ultraviolet disinfection unit. After disinfection, it will flow into the clean water tank for storage and standby use; the deep filtration unit and the activated carbon adsorption unit will be backwashed regularly to restore the purification function, and the backwash wastewater will be discharged into the regulating water tank.

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