CN116062860A

CN116062860A - Sewage treatment system based on flocculation device and DTRO

Info

Publication number: CN116062860A
Application number: CN202111057532.5A
Authority: CN
Inventors: 陈志伟; 黄美成
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2023-05-05

Abstract

The invention discloses a sewage treatment system based on a flocculation device and a DTRO (digital reverse osmosis), which comprises the flocculation device and the DTRO device, wherein a water inlet of the DTRO device is connected with a water outlet of the flocculation device; the flocculation device is used for flocculating, precipitating and discharging the sewage; (skimming refers to draining the supernatant); the DTRO device is a disc tube type reverse osmosis membrane device and is used for further purifying the clear liquid output by the flocculation device. The system of the invention can run around the clock and has good effect.

Description

Sewage treatment system based on flocculation device and DTRO

Technical Field

The invention relates to a sewage treatment system based on a flocculation device and a DTRO.

Background

The mainstream water treatment technology and traditional biochemical process, and MBR membrane process, etc.

(1) The traditional biochemical process comprises the following steps:

the decomposition of organic matters and the synthesis of organisms are completed by adopting microorganisms, and organic pollutants are converted into nitrogen, ammonia, activated sludge rich in organic matters and the like. Effects of traditional biochemical technology: COD removal rate 70%, ammonia nitrogen removal rate 70%, the advantage: the process is simple, and the dosing and the addition of a carbon source are not needed; disadvantages: the energy consumption is high, and the technical requirement on operators is high, so that the process is extremely easy to fail under the operation of non-professional staff, the expected effect cannot be realized, and the investment is greatly wasted.

(2) MBR membrane treatment process

MBR is also called a membrane bioreactor, and is a novel water treatment technology which combines a membrane separation unit and a biological treatment unit. The method has the advantages of effectively reducing the concentration of pollutants, along with small occupied area and convenient operation and management. Disadvantages: high energy consumption, easy pollution of the membrane and inconvenient cleaning operation.

Therefore, there is a need to design a flocculation device and DTRO based sewage treatment system, especially for pig farm sewage treatment.

Disclosure of Invention

The invention aims to solve the technical problem of providing a sewage treatment system based on a flocculation device and a DTRO, which is basically not influenced by the environmental temperature and can be controllably implemented.

The technical proposal of the invention is as follows:

a sewage treatment system based on a flocculation device and a DTRO comprises the flocculation device and the DTRO device, wherein a water inlet of the DTRO device is connected with a water outlet of the flocculation device;

the flocculation device is used for flocculating, precipitating and discharging the sewage; the clear discharging means that clear liquid is discharged;

the DTRO device is a disc tube type reverse osmosis membrane device and is used for further purifying the clear liquid output by the flocculation device.

The concentrated solution outlet of the DTRO device is connected with the inlet of the flocculation device, namely the concentrated solution of the DTRO device flows back to the flocculation device for circulation treatment. Finally realizing the standard discharge.

The sterilizing and disinfecting device is also included; the sterilizing and disinfecting device is in butt joint with the purified water discharge end of the DTRO device.

The device also comprises a solid-liquid separator; the solid-liquid separator is in butt joint with the inlet of the flocculation device, and the liquid output by the solid-liquid separator enters the flocculation device.

The flocculation device is an intelligent water treatment device. The flocculation device can also adopt other flocculation devices which are not intelligent, such as adding a flocculating agent into a sewage tank, stirring, reacting and precipitating, and taking supernatant to be processed in the next step.

The intelligent water treatment device comprises a container, a rotary filter element, a dosing mechanism and a controller; the controller controls water inlet, water discharge and slag discharge, controls the lifting and rotation of the rotary filter element, and controls the adding mechanism to add flocculant. See the related art, e.g., the utility model of publication No. 214004260U, entitled: an intelligent water treatment device and system, or the utility model with the publication number of 214004257U, named as an intelligent water treatment device and system with a rotary filter element, is disclosed in the patent number of 202021988835.X.

The intelligent water treatment device also comprises a front-stage filtering module.

The intelligent water treatment device comprises a control module, wherein the control module controls the intelligent water treatment device and the DTRO device to work.

The control module is connected with a communication module, and the communication module is used for transmitting the field data to a remote receiving end. The remote receiving end is a server or a smart phone and other devices.

The three-dimensional electrolysis device is also included; the three-dimensional electrolysis device is connected with the concentrated solution outlet of the DTRO device, namely the concentrated solution discharged by the DTRO device is further processed by the three-dimensional electrolysis device. The concentration is about 10-30% of the total water.

The intelligent water treatment device is also called as an intelligent water treatment module, and can be arranged in a modular manner, can be independently arranged or can be arranged in parallel.

Two advanced treatment processes are introduced:

(1) DTRO (disc tube reverse osmosis) treatment process:

technical introduction: reverse osmosis is a membrane separation technique that separates solvent from solution with pressure differential as the driving force. Typically for use in the end-point process of water treatment.

The advantages are that: the equipment has small volume, simple operation, stable operation and strong adaptability.

Disadvantages: the equipment cost is high, and 10-30% of high-concentration water needs to be further treated by adopting other processes.

DTRO effect:

COD removal rate reaches more than 90%; (in the actual measurement case, from 209mg/L to 10 mg/L);

the ammonia nitrogen removal rate reaches more than 90 percent; (in the actual measurement case, from 370mg/L to 6.09 mg/L);

Role of DTRO in the overall water treatment system:

because SS index and other indexes of the pre-treatment are reduced to be extremely low, the service life of the equipment can be remarkably prolonged by adopting the present-stage reverse osmosis treatment.

(2) The three-dimensional electrolytic treatment process comprises the following steps:

technological introduction: the hydrogen peroxide and hydroxyl free particles generated by electrolysis are utilized to oxidize and degrade pollutants in water, so that COD (chemical oxygen demand), ammonia nitrogen and chromaticity can be effectively reduced.

The advantages are that: the modularized treatment has wide application, small occupied area, simple operation and no need of adding medicament.

Only 10 minutes is needed, the COD can be reduced by more than 60 percent, and the total removal rate of the COD of the whole system can reach more than 95 percent; the ammonia nitrogen removal rate can reach more than 95 percent.

Disadvantages: high energy consumption and short service life of the electrode.

The function of the three-dimensional electrolytic treatment process in the whole water treatment system:

because the processing of the front-stage intelligent module has greatly reduced various indexes, the system can greatly reduce the energy consumption and the operation cost by adopting the process. In addition, the three-dimensional electrolytic treatment process may be conducted again with respect to the concentrated water treated by the reverse osmosis membrane.

The beneficial effects are that:

the invention has the most beneficial effects that the flocculation filter device, especially the flocculation filter device based on the intelligent water treatment module, greatly reduces various indexes of sewage (such as COD, ammonia nitrogen and the like), and can reach the water purification standard by the subsequent deep process (DTRO and three-dimensional electrolysis), thereby replacing the traditional biochemical process on the whole, being greatly influenced by multiple factors such as environmental factors, the input of digestive bacteria and the like compared with the uncontrollable traditional biochemical process, the whole equipment and the process of the invention are completely controllable, and the all-weather operation and the complete and reliable standard discharge can be realized because the three-dimensional electrolysis technology is almost irrelevant to the environmental temperature, and the related indexes are far superior to the related standards. The invention perfectly integrates various technologies, obtains unexpected effects, and the practice proves that the obtained effects are very ideal, and the detailed detection report is shown later.

In addition, the characteristics of intelligent module:

1. the water treatment device (water treatment unit) has compact structure and integrated structure; the occupied space is small; the flexible configuration is convenient;

2. automatically operating; the device can be unattended; remotely monitoring;

the equipment can automatically run under the control of the controller, unattended operation can be realized, remote control can be realized after the controller is connected with the communication module, and on-site data can be transmitted to a remote server or a data terminal (such as a smart phone) to realize remote monitoring; therefore, the degree of automation is high, and the degree of digitization is high;

the control can also be realized by adopting an analog relay control system, and the specific control is the prior art.

3. The modular concept is adopted, and the operation is performed in a modular manner;

can be flexibly connected in parallel or in cascade; the modular operation is convenient for the later maintenance;

4. the water treatment device (water treatment unit) has a self-cleaning function;

the whole flow and structure has ingenious design concept; the processing capacity is strong.

The hole on the annular water inlet pipe has a certain inclination, so that the outer wall of the inner barrel can be better flushed, and residual flocculate on the inner barrel is cleaned; the novel filter element cleaning device is ingenious in that when the filter element ascends, the filter element rotates simultaneously, and the filter element can be cleaned under the impact of water inflow, so that the other cleaning process is avoided; the whole flow is easy to control, each parameter can be collected, and the motion is performed according to the collected parameters, so that the processing efficiency is high. The device fault early warning, the networking control and the remote parameter acquisition are realized through self-checking, and the automatic COD monitoring can be realized.

5. The tightness of the water treatment device can be good, and secondary pollution is avoided;

by adopting the device, the wastewater can not be exposed to the outside, so that secondary pollution is avoided;

6. ultraviolet sterilization and ozone sterilization can be further added at the water outlet pipe;

the invention can treat sewage, can be used for purifying water in water plants, and has wide application;

the filter element mesh number can be set according to the needs, and the larger the mesh number is, the fine filtration can be realized.

In addition, different treatments are performed with different drugs to be put into water.

The liquid level sensor can be a magnetic sensor (Hall sensor) or a light sensor (such as an infrared correlation tube).

The invention has the core characteristics that: automatic lifting (lifting function, filter element cleaning and circulating action), self-cleaning, wastewater purification by filtration and circulating action; and the filter element rotates when rising, thereby enhancing the cleaning effect.

In summary, the intelligent water treatment device can be realized based on the MCU or the relay protection device, has high automation degree, can realize the refined treatment of the wastewater or the water to be purified, is easy to implement, has compact structure, is convenient to move and combine flexibly, is a great improvement on the existing water treatment equipment, and has great social and economic benefits.

Drawings

FIG. 1 is a schematic view (front view) of a cartridge type water treatment apparatus having an external liquid pump and a rotary cartridge, with the cartridge at the lowermost end;

FIG. 2 is a schematic view (side view) of a cartridge water treatment apparatus having an external liquid pump and a rotating cartridge with the cartridge at the lowermost end;

FIG. 3 is a schematic view (side view) of a cartridge water treatment apparatus having an external liquid pump and a rotating cartridge with the cartridge uppermost;

FIG. 4 is a schematic view (front view) of a cartridge water treatment apparatus having an external liquid pump and a rotating cartridge, with the cartridge at the lowermost end;

fig. 5 is a schematic structural view (perspective view) of the annular inlet pipe;

FIG. 6 is a schematic view of a cartridge lifter mechanism supported by a bracket;

FIG. 7 is a schematic view of a plurality of cartridges sharing a single support mechanism;

FIG. 8 is a block diagram of a relay control system;

fig. 9 is a relay control flowchart;

FIG. 10 is a control system block diagram;

FIG. 11 is a schematic diagram of a water treatment device and dosing device combination (with the cartridge at the lowermost end);

FIG. 12 is a schematic view of a roller structure with a strip-shaped recess (a front sectional view);

FIG. 13 is a schematic view of a roller structure with a strip-shaped recess (side cross-sectional view);

FIG. 14 is a schematic view of a roller structure with circular depressions (a front cross-sectional view);

FIG. 15 is a schematic view of a roller configuration with circular depressions (side cross-sectional view);

fig. 16 is a schematic structural view (front view) of a roll type quantitative feeding device;

FIG. 17 is a schematic view (side view) of a roller type quantitative feeder;

FIG. 18 is a schematic view of a depression of a roll-type dosing device;

fig. 19 is a schematic view (front view) of a rotary roller type dosing module;

FIG. 20 is a schematic view (side view) of a rotary roller dosing module;

FIG. 21 is a cross-sectional view taken along line A-A of FIG. 20;

FIG. 22 is a front view of a front-end water treatment apparatus (device);

FIG. 23 is a side view of a front-end water treatment apparatus (device);

FIG. 24 is a perspective view of a front-end water treatment apparatus (device);

FIG. 25 is a B-B cross-sectional view of FIG. 22;

FIG. 26 is a cross-sectional view A-A of FIG. 22;

FIG. 27 is a cross-sectional view of a front-end water treatment apparatus (device);

FIG. 28 is a top view of a front-end water treatment apparatus (device) without a front-end liquid pump.

FIG. 29 is a general process flow diagram;

FIG. 30 is a schematic view of the docking of an intelligent module with a three-dimensional electrolyzer;

FIG. 31 is a schematic diagram of the intelligent module interfacing with the DTRO device;

fig. 32 is a display of the detection results.

Reference numerals illustrate:

the device comprises a 1-flow sensor, a 2-liquid pump, a 3-water pumping pipe, a 4-liquid level sensor, a 5-liquid inlet pipe, a 6-rotating shaft, a 7-filter element, an 8-outer barrel, a 9-magnetic levitation anti-water collector and a 10-machine leg; 11-discharge valve, 12-discharge pipe, 13-motor, 14-first gear, 15-second gear, 16-bearing, 17-automatically controlled elevating drive mechanism. 18-lifting platform; 19-brackets, 20-cross beams and 21-sedimentation tanks; 51-pipe body, 52-water outlet hole; 53-the water inlet end of the tube body and 54-the outer end of the tube body; 77-water inlet holes and 78-filter screen; 61-a central tube; 62-connecting rod, 63-hanging rod.

256-a liquid medicine barrel and 265-an oblique feeding channel. 266-recess; 267-hopper, 269-strip-shaped concave part, 271-round concave part, 276-blanking roller, 277-roller rotating shaft, 278-baffle rotating shaft, 279-baffle, 280-pipe wall, 281-support frame and 281-blanking driving motor; 283-upper supporting frame, 284-lower supporting frame, 285-liquid medicine stirring motor; 286-roller mounting plate.

1-1 outer barrel, 1-2 front stage bearing, 1-3 driven gear, 1-4 front stage liquid pump, 1-5 water pumping pipe, 1-6 driving motor, 1-7 driving gear, 1-8 main rotating shaft, 1-9 dirt sucking pump, 1-10 filter barrel, 1-11 water inlet hole, 1-12 bottom valve, 1-13 cascade pipe, 1-14 front stage water inlet pipe and 1-15 front stage water outlet pipe. 1-16 lower brackets; 1-17 upper support, 1-18 synchronous belt, 1-19 driving synchronous wheel and 1-20 driven synchronous wheel.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings and specific examples:

as shown in fig. 29 and 31, a sewage treatment system based on a flocculation device and a DTRO comprises the flocculation device and the DTRO, wherein the water inlet of the DTRO is connected with the water outlet of the flocculation device;

As shown in fig. 29, a sewage treatment system method comprises the steps of:

step 1: flocculation filtration step;

adding a flocculating agent into the sewage, so that the flocculating agent is fully mixed with the sewage and reacts;

step 2: deep treatment;

and further treating the flocculated and filtered clear water by adopting a reverse osmosis technology and a three-dimensional electrolysis technology.

In the step 2, the reverse osmosis technology is adopted for advanced treatment;

the reverse osmosis technology is a DTRO technology; the DTRO technology is a disc tube type reverse osmosis technology, and clear water after the DTRO treatment is directly output or is output after sterilization and disinfection treatment. Other reverse osmosis technologies can be adopted, but practice shows that the DTRO technology has better effect and is easier to maintain.

And (5) refluxing the concentrated solution after the DTRO treatment to the step for recycling treatment.

The concentrated solution after the DTRO treatment is further treated by three-dimensional electrolysis.

In the step 2, a three-dimensional electrolysis technology is adopted for advanced treatment.

The flocculation filtration step is carried out by adopting an intelligent water treatment device. The flocculation device can also adopt other flocculation devices which are not intelligent, such as adding a flocculating agent into a sewage tank, stirring, reacting and precipitating, and taking supernatant to be processed in the next step.

Sewage in the sewage collecting tank is treated by a solid-liquid separator and then enters a flocculation filtration step.

The water after the advanced treatment is discharged or recycled (such as reclaimed water recycling, purified water recycling and the like) after sterilization and disinfection.

In the step 2, the reverse osmosis technology is adopted for advanced treatment; the reverse osmosis technology is a DTRO technology; the DTRO technology is a disc tube type reverse osmosis technology, clear water after the DTRO treatment is directly output or is output after sterilization and disinfection treatment, and concentrated solution after the DTRO treatment is further processed through three-dimensional electrolysis. The intelligent water treatment device, the DTRO device and the three-dimensional electrolysis device are uniformly controlled by the control system. The DTRO device is used for executing the DTRO process.

The corresponding system of the process is as follows:

a comprehensive sewage treatment system comprises a flocculation device, a DTRO device and a three-dimensional electrolysis device, wherein a water inlet of the DTRO device is connected with a water outlet of the flocculation device; a water inlet of the three-dimensional electrolysis device is connected with a concentrated solution outlet of the DTRO device; the flocculation device is used for flocculating, precipitating and discharging the sewage; (skimming refers to draining the supernatant); the DTRO device is a disc tube type reverse osmosis membrane device and is used for further purifying the clear liquid output by the flocculation device. The concentrate of the DTRO device is further processed by the three-dimensional electrolysis device.

And the purified water output by the three-dimensional electrolysis device and the purified water output by the DTRO device are discharged after being integrated. The combination is mixing. After synthesis, the index meets the relevant emission standard.

The sterilizing and disinfecting device is also included; the sterilizing and disinfecting device is in butt joint with the integrated drainage end.

The intelligent water treatment device comprises a control module, wherein the control module controls the intelligent water treatment device, the DTRO device and the three-dimensional electrolysis device to work.

The DTRO device is adjusted to minimize the amount of concentrated solution so as to reduce the working power consumption of three-dimensional electrochemical and realize the economy of the system.

The second process and system:

another process and a corresponding system are shown in fig. 31, and a sewage treatment system based on a flocculation device and a DTRO (digital reverse osmosis) device comprises the flocculation device and the DTRO device, wherein a water inlet of the DTRO device is connected with a water outlet of the flocculation device; the flocculation device is used for flocculating, precipitating and discharging the sewage; (skimming refers to draining the supernatant); the DTRO device is a disc tube type reverse osmosis membrane device and is used for further purifying the clear liquid output by the flocculation device. And the concentrated solution outlet of the DTRO device is connected with the inlet of the flocculation device, namely, the concentrated solution of the DTRO device flows back to the flocculation device for cyclic treatment, and finally, the discharge reaching the standard is realized.

Third process and system:

as shown in FIG. 30, the sewage treatment system based on the flocculation device and the three-dimensional electrolysis device comprises the flocculation device and the three-dimensional electrolysis device, wherein the water inlet of the three-dimensional electrolysis device is connected with the water outlet of the flocculation device; the flocculation device is used for flocculating, precipitating and discharging the sewage; (skimming refers to draining the supernatant);

The three-dimensional electrolysis device is used for further purifying the clear liquid output by the flocculation device; the sterilizing and disinfecting device is also included; the sterilizing and disinfecting device is in butt joint with the purified water discharge end of the three-dimensional electrolysis device.

Intelligent water treatment device introduction:

barrel-type water treatment device with external liquid pump and rotary filter element

1-11, a barrel-type water treatment device with an external liquid pump and a rotary filter element comprises a container (specifically an inner barrel 8), the filter element 7, a filter element lifting mechanism, a liquid inlet pipe 5, a medicine feeding mechanism, a liquid pumping mechanism and a discharging mechanism; the filter element is arranged in the container; the barrel wall of the filter element is provided with a plurality of filter holes; the filter element is a rotary filter element; the filter element lifting mechanism comprises a lifting platform and an electric control lifting driving mechanism 17; an electric control lifting driving mechanism; for example, the lifting platform is fixed on a container, or fixed on the ground, or fixed on other supports and connected with the lifting platform; the motion direction of the electric control lifting driving mechanism is the same as the axial direction of the filter element; the electric control lifting driving mechanism can also be a hydraulic push rod or an electric push rod; the lifting platform is provided with a bearing, and a rotating shaft 6 of the filter element is inserted on the bearing; the lifting platform is also provided with a motor 13 for driving the rotating shaft to rotate and a transmission mechanism; the lifting platform is connected with the filter element and is used for driving the filter element to lift; the liquid inlet pipe is used for guiding water to be purified into the container, and a liquid inlet valve is arranged on a liquid supply pipeline of the liquid inlet pipe; the dosing opening of the dosing mechanism is arranged above the container with the outer wall of the container and used for throwing the water treatment medicament into the container; the dosing can be additional tubing addition, or direct dosing of solid or powdered medicament;

The discharging mechanism comprises a discharging pipe 12 arranged at the bottom of the container and used for discharging waste materials and a discharging valve 11 arranged on the discharging pipe;

the liquid pumping mechanism comprises a liquid pump 2 and a water pumping pipe 3 connected with the liquid pump, wherein the lower end of the water pumping pipe is positioned at the bottom in the filter element and is used for pumping filtered water in the filter element. The liquid pump is preferably an aspiration pump. The liquid pump is an external liquid pump; with reference to figures 20-22 of the drawings,

the container is provided with a liquid level detection module; the liquid level detection module can directly adopt a liquid level sensor or adopt other sensors to convert the liquid level into the liquid level, such as a flowmeter at a water inlet pipe, the liquid level is converted into the liquid level through the flow and the cross section area of a container, and the liquid level can also be converted into the liquid level through the hydraulic data collected by a pressure sensor, because the pressure at the bottom of the liquid is in direct proportion to the liquid level;

the intelligent water treatment device further comprises a control module, wherein the control module is used for controlling the actions of the filter element lifting mechanism, the liquid inlet valve, the liquid pumping mechanism and the discharging valve. The control module can be a relay control module or a control module based on an MCU, wherein the MCU is a singlechip, a PLC, an ARM processor or a DSP;

at least 2 electric control lifting driving mechanisms are provided; the static part of the electric control lifting driving mechanism is fixed on the container or the external bracket. The structure is compact, the whole equipment forms an integrated equipment, and the electric control lifting driving mechanism comprises a static part and a moving part; when the device acts, the static part does not act, and the moving part stretches and contracts;

The liquid inlet pipe is an annular liquid inlet pipe, a plurality of water outlet holes are formed in the pipe wall of the liquid inlet pipe, and the annular liquid inlet pipe is positioned at the opening of the container and fixed on the inner wall of the container; the diameter of the annular liquid inlet pipe is larger than the outer diameter of the filter element.

The liquid inlet pipe is fixed on the container; the diameter of the inner ring of the annular pipe is larger than the outer diameter of the filter element; the filter element can be lifted on the annular pipe, so that the water outlet of the annular pipe can clean the outer wall of the filter element;

the rotating shaft is a hollow rotating shaft, and the water pumping pipe is positioned in the through hole of the rotating shaft.

The liquid pump is arranged on the ground outside the outer barrel or on a support on the ground.

The container is an outer barrel, and the bottom of the outer barrel is provided with a machine foot 10 which plays a supporting role.

The inner wall of the container is provided with a liquid level detection module; the liquid level detection module can directly adopt a liquid level sensor or adopt other sensors to convert into the liquid level, such as a flowmeter at a water inlet pipe, convert into the liquid level through the flow and the cross section area of a container, and also convert into the liquid level through the hydraulic data collected by the pressure sensor, because the pressure at the bottom of the liquid is in direct proportion to the liquid level, the liquid level detection module preferably adopts the liquid level sensor 4, and the liquid level sensor is connected with a controller. The liquid level sensors are preferably 2, one is arranged at the upper end of the container for detecting the highest water level, and the other is arranged at the lower end of the container for detecting the lowest water level;

The water outlet pipe is provided with a flow sensor 1 which is connected with a controller.

The bottom of the filter element is provided with a magnetic levitation anti-water collector 9, and the magnetic levitation anti-water collector is positioned outside the filter element. When water exists, the magnetic levitation anti-water collector closes the pipeline of the magnetic levitation anti-water collector under the action of buoyancy, and when water does not exist, the channel is opened, and impurities are discharged from the pipe orifice.

Description of the process:

when water is fed, waste water is ejected from the water outlet hole to clean the outer wall of the filter element, and the water outlet hole is designed to incline at a certain angle, so that the cleaning effect is better. Specifically, the inclination angle is 1-30 degrees, preferably 10-20 degrees, so that the angle of the discharged water deviates from the radial direction by a certain angle, such as 10-20 degrees.

In addition, as shown in fig. 14, a plurality of cartridges are provided in the container; and synchronously controlling a plurality of filter elements. The water can be synchronously fed and lifted, and the water can be pumped at the same time, so that the waste discharging device is shared.

Electric control system (MCU-based electric control system)

The electric control system of the intelligent water treatment device comprises an MCU, a position sensor and a liquid level sensor; the position sensor and the liquid level sensor are connected with the MCU; the lifting mechanism, the liquid inlet valve, the dosing mechanism, the discharge valve and the liquid pump are controlled by the MCU; the position sensor is used for detecting the position of the lifting platform or the filter element in the vertical direction; the liquid level sensor is used for detecting the height of the liquid level in the container; the MCU has a timing unit therein for controlling the reaction time (e.g., flocculation time). The MCU performs the following control:

The water inlet chemical dosing control, the MCU controls the opening of the water inlet valve, and when the liquid level rises to a preset liquid level, water inlet is stopped;

when water is fed, the medicament for purifying the water and the water to be treated enter the container at the same time; the medicine can enter the container in a mixture mode, so that a liquid inlet valve can be controlled, and the medicine feeding pipe and the wastewater inlet pipe are separated in advance, and the medicine and the wastewater are mixed only when water is fed; the water and the medicine can enter through different pipelines, but the medicine adding and the water adding are carried out simultaneously.

And (3) lifting and controlling a filter element:

when water is fed, the MCU simultaneously controls the filter element to ascend so as to clean the outer wall of the filter element; after the position sensor detects that the filter element rises to a preset highest position, stopping rising of the filter element;

after the preset reaction time is reached, the MCU controls the filter element to descend; stopping descending until the device descends to a preset lower limit position;

pumping control:

when the filter element descends to a certain set position (such as the lowest position or a certain lower position), the MCU starts the liquid pump to start pumping water; after the liquid level meter detects that the liquid level is lower than a certain set value or the flowmeter detects that the flow is lower than the set value, the MCU turns off the liquid pump;

and (3) waste discharge control:

after the liquid level gauge detects that the liquid level is lower than a certain set value or the flowmeter detects that the flow is lower than the set value, a discharge valve is opened to discharge waste; after the preset discharging time, after the preset discharging time T2, or after the weight sensor detects that the weight of the waste at the bottom of the container is less than the preset value, the discharging valve is closed; restarting the next control period;

If the flowmeter is used for detecting the water yield, the flowmeter is arranged at the water outlet pipe and is connected with the MCU.

And (3) filter element rotation control:

the filter element is a rotary filter element, a bearing is arranged on the lifting platform, and a rotating shaft of the filter element is inserted into the bearing; the intelligent water treatment device also comprises a motor and a transmission mechanism; the motor drives the filter element to rotate through the transmission mechanism;

the MCU performs control including motor control;

when the filter element rises, the starting motor drives the filter element to rotate, and water ejected from the annular water inlet pipe washes the outer wall of the filter element at the moment so as to enhance the cleaning effect.

The electric control lifting driving mechanism is a hydraulic push rod or an electric push rod.

The MCU is a singlechip, FPGA, CPLD, DSP or ARM processor.

The intelligent water treatment device also comprises a communication module; the MCU is connected with the communication module, and the MCU is connected with the remote control terminal or the control center through the communication module. If a plurality of intelligent water treatment devices are arranged in one container, the intelligent water treatment devices are synchronously controlled.

The position sensor is at least one of a travel switch, a displacement sensor and a photoelectric sensor.

Description of working process (namely control method of intelligent water treatment device):

step 1: feeding water and adding medicine, and lifting the filter element;

The MCU controls the opening of the water inlet valve, and stops water inlet when the liquid level rises to a preset liquid level; when water is fed, the medicament for purifying the water and the water to be treated enter the container at the same time;

step 2: water purification reaction;

when the liquid level rises to a preset liquid level, standing for a set time T1; so that the medicament in the water fully acts; if flocculation reaction is generated fully;

step 3: the filter element descends and pumps water;

step 4: discharging the waste;

after the liquid level gauge detects that the liquid level is lower than a certain set value or the flowmeter detects that the flow is lower than the set value, a discharge valve is opened to discharge waste; after discharging for T2 time, T2 is preset discharging time, or after detecting that the weight of the waste at the bottom of the container is less than a preset value through a weight sensor, closing a discharging valve; restarting the next control period;

Returning to the step 1 to enter the next cycle after discharging is completed; until the intelligent water treatment device is shut down (e.g., manually shut down, or fail shut down, or remotely controlled shut down).

when the filter element rises, the MCU starts the motor to drive the filter element to rotate, and water ejected from the annular water inlet pipe washes the outer wall of the filter element at the moment so as to enhance the cleaning effect.

A remote control mode (the specific mode is the prior art) is adopted to control the water treatment process of the intelligent water treatment device; the MCU is in communication connection with a remote control terminal or a remote control center through a communication module, so that remote control is realized. The remote control terminal can be a PC or a smart phone, and the remote control center is a server.

Specific filter element structure

The filter element comprises a filter element outer frame and a filter screen; the central tube is inserted in the middle of the outer frame of the filter element and fixed; the central tube is positioned in the central cavity of the outer frame of the filter element; the filter screen covers and is fixed on the periphery of the filter element outer frame, and a plurality of filter holes are formed in the filter screen; the bottom of the filter element is provided with a sealing barrel bottom; the barrel bottom is in butt joint with the bottommost end of the outer frame; the lower end of the filter screen is kept sealed with the upper end of the barrel bottom;

The side of the outer frame of the filter element is provided with a plurality of window holes 73;

the outer frame is cylindrical; the rotary filter element further comprises an upper cover, and the upper cover is in butt joint with the upper end of the filter element shell; the upper cover and the barrel bottom are provided with mounting holes 74, and the central pipe is inserted into and fixed in 2 mounting holes; the outer wall of the rotating shaft is kept sealed with the mounting hole at the bottom of the barrel, so that water in the rotating filter element is prevented from flowing out of the filter element.

The lower end of the central tube is positioned between the bottom of the outer frame of the filter element and the bottom of the barrel, and the rotating shaft is hollow; the lower end of the central tube is provided with at least one water inlet hole 77; the central tube is internally provided with a water pumping pipe 3. Preferably 2-4 water inlet holes.

The bottom of the central tube is sealed or provided with a magnetic levitation anti-water collector. The lower end of the rotating shaft is sealed or semi-sealed, and the semi-sealing means that the bottom of the rotating shaft is provided with a magnetic levitation anti-water collector, and when water exists in the outer barrel, a floating ball in the magnetic levitation anti-water collector is propped against and sealed under the buoyancy effect of the water.

The cartridge is connected to a lifting platform 18 by a lifting drive mechanism.

The filter screen can be a common filter screen, such as a steel wire filter screen, a nylon filter screen, or the like; the common filter screen can be used, and has the problem of insufficient strength.

The filter screen is preferably provided with etched filter holes; the filter screen formed based on the etching technology can be very fine and uniform, the diameter of the filter screen can be designed into different sizes according to the requirements, the density of the holes can be set according to the requirements, and if only coarse filtration is needed, the filter screen can be designed to be larger, such as millimeter level; if fine filtration is needed, the filter holes can be made smaller, and the diameter can be in the level of 0.1 millimeter. The advantage is that its overall strength is higher than ordinary filter screen.

The window holes on the side part of the outer frame of the filter element are uniformly distributed. The fingers are arranged in an equidistant array.

The filter element has the following characteristics:

(1) The double-layer structure with the rotating shaft is adopted as a whole, the inner layer is a frame, the outer layer is a filter screen, and the frame, the barrel cover and the barrel bottom can jointly fix the central pipe; therefore, the structure is compact, and the sealing performance is good;

(2) The water suction pipe is arranged in the central pipe, so that the appearance is more attractive;

(3) When the magnetic levitation anti-water collector is used, the water suction pipe is closed when water exists at the bottom, and impurities in the water suction pipe can be discharged when water does not exist at the bottom, so that the magnetic levitation anti-water collector has a remarkable effect.

(4) The automatic cleaning of the outer wall can be realized by matching with the lifting mechanism and the water spraying structure;

in summary, the filter element for the barrel-type water treatment device with the external liquid pump and the rotary filter element has compact structure and attractive appearance, and is a key mechanism in the water treatment device.

Lifting driving mechanism

Case 1: the static part (lower end) of the driving mechanism is directly fixed on the outer barrel; the moving end (upper end) is connected with the lifting platform; the device is used for driving the filter element to ascend and descend;

in the case 2, the filter element lifting mechanism of the barrel-type water treatment device with the external liquid pump and the rotary filter element has larger diameter of the external barrel, and the lifting mechanism can be adopted; the first end (static end) of the electric control lifting driving mechanism is fixed on the cross beam 20 of the bracket 19, and the movable end (lower end) is connected with the lifting platform. The lifting platform is connected with the filter element and is used for driving the filter element to lift;

Case 3: the filter element lifting mechanism of the barrel-type water treatment device is provided with an external liquid pump and a rotary filter element, and the container is a sedimentation tank; therefore, the device is suitable for treating a large amount of wastewater at one time; the electric control lifting driving mechanisms are multiple groups, and the first end (the stationary end and the upper end) of each group of electric control lifting driving mechanism is fixed on the cross beam 20. The movable end (lower end) is connected with the lifting platform, so that the synchronous lifting of a plurality of filter elements can be realized. The plurality of vertical rods are used for fixing the annular water inlet pipe, the upper ends of the vertical rods are fixed with the cross beams, and the lower ends of the vertical rods are fixed with the annular water inlet pipe.

Seventh liquid inlet pipe (Inlet pipe)

A water inlet pipe for the water treatment device, wherein the pipe body 51 of the water inlet pipe is in a surrounding shape as a whole; the outer end 54 of the pipe body of the water inlet pipe is plugged; the water inlet pipe is provided with a plurality of water outlet holes 52; the water treatment device is provided with an inner barrel and an outer barrel.

The water outlet hole is positioned at the inner side of the outer winding pipe body, so that the water emitted from the hole is convenient to be directed towards the center (such as radial direction and point to the circle center), and is cheap for a certain angle (such as 15 degrees), and the inner barrel can be flushed by the way when water enters.

The whole body of the pipe body is in a circular ring shape, and the diameter of the inner ring of the pipe body is larger than the outer diameter of the inner barrel.

The pipe body is fixed on the inner wall of the opening of the outer barrel, and is fixed by welding or through a plurality of hooks.

The pipe body is in a regular quadrangle as shown in fig. 7, so that the pipe body can be matched with a square filter element; the filter element can be deformed in positive n, n is more than or equal to 5, and the filter element is matched with the shape of the filter element, so that the effect of cleaning the outer wall of the filter element can be better exerted.

The water outlets are arranged at equal intervals.

The diameter range of the water outlet hole is 2-20mm. Depending on the volume of the water treatment device, it is preferable that the diameter of the water outlet hole is 2.5mm when the diameter of the annular pipe body is 430 mm.

The water inlet pipe has the following characteristics:

(1) One end of the pipe body is blocked, and water is discharged through the smaller water outlet hole, so that the water is discharged more uniformly than the water discharged by a direct pipe orifice;

(2) The water outlets are arranged at equal intervals, so that water is discharged more uniformly;

(3) When the annular pipe body is adopted, the water outlet hole faces to the circle, and in the lifting process of the inner barrel (namely the filter element), the water outlet can wash the outer wall of the inner barrel, so that the self-cleaning effect is achieved.

(4) The whole adopts a ring-shaped or polygonal structure, and the appearance is more attractive.

In conclusion, the water inlet pipe for the water treatment device has attractive structure and self-cleaning function.

The medicines are added through the administration mechanism, and the medicines are added simultaneously when water is added, and the medicines are preferably added through a further pipe, and preferably the solution with the medicines is added. Controlling the liquid medicine to enter or stop entering through a valve; or directly into a solid or powder medicament, the administration mechanism not being shown.

The medicine dispensing module: the dosing module is used for adding flocculating agent and other medicaments (liquid medicine) into the intelligent water treatment module

12-19, a rotary roller type quantitative dosing module comprises a rotary roller type quantitative dosing device and a liquid medicine barrel; the rotary roller type quantitative feeding device is positioned above the liquid medicine barrel, and a discharge port of the rotary roller type quantitative feeding device is in butt joint with a feed port on the liquid medicine barrel; the liquid medicine barrel is provided with a liquid medicine stirring mechanism for stirring liquid medicine; the liquid medicine mechanism comprises a stirring shaft in the liquid medicine barrel, a stirring blade and a liquid medicine stirring motor arranged on the liquid medicine barrel; the rotary roller type quantitative feeding device comprises a hopper, a blanking roller, a supporting frame and a blanking channel; the blanking roller is driven by a blanking driving motor; the blanking roller is arranged below the blanking port of the hopper, and the roller surface of the blanking roller is contacted with the blanking port; the blanking roller is arranged on a roller mounting plate extending out from the lower part of the hopper, or the blanking roller is arranged on the supporting frame; at least one concave part is arranged on the roller surface of the blanking roller; when the blanking roller does not rotate, the blanking roller can seal a blanking port at the lower end of the hopper, so that materials in the hopper are prevented from leaking; when the blanking roller rotates, the concave part can prevent materials in the hopper from being carried out, and the materials are output into the liquid medicine barrel through the feeding channel, and the outlet of the feeding channel is the discharge hole.

The lower end of the support frame is provided with a plurality of support legs 284; the liquid medicine barrel is arranged in a space surrounded by the supporting legs, and the supporting frame is used for independently supporting the feeding device in another mode, the liquid medicine barrel does not need to be supported, and at the moment, the supporting frame can be arranged at the side part of the liquid medicine barrel and is not shown; or the supporting frame is fixed on the liquid medicine barrel.

The support frame is provided with a liquid medicine pump 252, and a liquid inlet pipe of the liquid medicine pump is inserted in the liquid medicine barrel.

The feed channel is an oblique feed channel 265 or a vertical feed channel, but the oblique feed channel makes the material enter smoothly, i.e. slide into the liquid medicine barrel.

The concave parts are a plurality of and are equally distributed along the circumference of the blanking roller.

The blanking driving motor is driven by a frequency converter, the speed can be regulated, the adjustment of the dosing amount in unit time is realized, the frequency converter can be manually adjusted or controlled by an MCU, and the frequency converter is controlled by the MCU.

The blanking driving motor is controlled by the MCU, and a position detection sensor is arranged on the blanking roller; the position detection sensor is a Hall sensor, a code disc or a photoelectric switch, and the liquid medicine pump is controlled by the MCU; the MCU is connected with a communication module, so that remote monitoring is facilitated.

The liquid outlet pipe of the liquid medicine pump is connected with the inside of a container in the water treatment device, so that the solution in the liquid medicine barrel is pumped into the container.

The periphery of the filter element is provided with a filter screen, the diameter of a mesh hole on the filter screen is between 0.1 and 2mm, the filter screen is arranged according to specific application occasions and requirements, small-diameter filter holes can be selected if the filter effect is good, and large-diameter filter holes can be selected if the filter efficiency is high. Or a plurality of water treatment devices are connected in series, and the diameter of the filter holes of the front stage is larger than that of the filter holes of the rear stage. The filter screen can be a steel wire mesh, and preferably, the filter screen can also be produced by adopting an etching technology, so that the strength is high. The size of the filter holes is shown schematically and does not represent the actual proportional relationship between the filter holes and the device, and is described in detail.

Specific: the rotary roller type quantitative dosing device comprises a hopper 267, a blanking roller 276, a supporting frame 281 and a blanking channel; the blanking roller is driven by a blanking driving motor 281; the blanking roller is arranged below the blanking port of the hopper, and the roller surface of the blanking roller is contacted with the blanking port; the blanking roller is arranged on a roller mounting plate 286 extending out from the lower part of the hopper, and the roller surface of the blanking roller is provided with 2 concave parts; when the blanking roller does not rotate, the blanking roller can seal a blanking port at the lower end of the hopper, so that materials in the hopper are prevented from leaking; when the blanking roller rotates, the concave part can prevent the materials in the hopper from being carried out, and the materials are output through the feeding channel; the feeding channel is an inclined feeding channel 265, the inclined feeding channel enables materials to enter slowly, namely, slide into the liquid medicine barrel, the supporting frame is a square frame, and the bottom of the square frame is provided with supporting legs 284; the number of the concave parts is 2, and the concave parts are equally distributed along the circumferential direction of the blanking roller, namely symmetrically distributed about the roller; the blanking driving motor is driven by a frequency converter, the speed can be regulated, the adjustment of the dosing amount in unit time is realized, the frequency converter can be manually adjusted or controlled by an MCU, and the frequency converter is controlled by the MCU; the blanking driving motor is controlled by the MCU, and a position detection sensor is arranged on the blanking roller; the position detection sensor is a Hall sensor, a code disc or a photoelectric switch; the MCU is connected with a communication module, so that remote monitoring is facilitated.

The rotary roller type quantitative dosing device is arranged in the water treatment system as a part of the water treatment system and is used for throwing water treatment agent into a liquid medicine barrel in the water treatment system.

The following description relates to a pre-stage apparatus (the pre-stage apparatus is used to replace a solid-liquid separator, and is a pre-stage module of a water treatment module, and is used to filter impurities such as particulate matters in some sewage):

the pre-stage equipment is used for carrying out preliminary filtration or pre-stage filtration on the cultivation wastewater (such as pig manure water), the diameter of the filter holes of the pre-stage equipment is larger than that of the filter holes of the post-stage equipment (core treatment equipment, namely the water treatment device of the invention), and the diameter of the filter holes of the pre-stage equipment is controlled to be 0.5-1.2mm. The connection of the front-stage device and the rear-stage device means that the water output by the water outlet pipe of the front-stage device enters the filter vat (i.e. container) of the rear-stage device.

22-28, the pre-stage water treatment equipment comprises a lower bracket 1-16, an outer barrel 1-1, a filter barrel 1-10, a liquid inlet and a driving mechanism for driving the filter barrel to rotate; the lower bracket comprises a frame and a plurality of supporting legs for supporting the frame; the outer barrel is fixed on the lower bracket; the filter vat is arranged in the outer vat; the wall of the filter barrel is provided with a plurality of filter holes; the filter vat is a rotary filter vat with a main rotating shaft; the outer barrel is provided with a supporting platform, the supporting platform is provided with a front-stage bearing, and the main rotating shafts 1-8 of the filter barrel are inserted on the front-stage bearing; the driving mechanism is arranged on the supporting platform; the driving mechanism comprises driving motors 1-6 and a transmission mechanism; a sewage discharging mechanism is arranged at the bottom of the filter barrel; the sewage draining mechanism is at least one of a drain valve and a sewage draining pump; the diameter of the filter holes is between 0.01mm and 0.5 mm. The filter barrel is internally provided with a water pumping pipe 1-5 for pumping out water in the filter barrel; the pre-stage water treatment equipment with the rotary filter drum also comprises an aerator pipe; the lower end of the aeration pipe is inserted into the container and is used for aerating water in the outer barrel so as to improve ammonia nitrogen index; the transmission mechanism is a gear transmission mechanism, or the transmission mechanism is a synchronous belt transmission mechanism, a driving synchronous wheel 1-19 is arranged on a rotating shaft of the driving motor, a driven synchronous wheel 1-20 is arranged on the driving rotating shaft, and the driving synchronous wheel and the driven synchronous wheel are in transmission connection through a synchronous belt 1-18; the supporting platform is an upper bracket. The upper bracket is also provided with a front-stage bearing, the upper end of the main rotating shaft of the filter vat is inserted on the front-stage bearing, and the filter vat adopts double bearings, so that the rotation is more stable; the liquid inlet is connected with the water inlet pipe. The filter barrel is internally provided with a water pumping pipe 1-5 for pumping out water in the filter barrel; the main rotating shaft is a hollow rotating shaft with a sealed bottom, and the lower end of the main rotating shaft is inserted into the bottom of the filter vat, and can be in butt joint with the bottom or not in contact with the bottom; the liquid suction pipe is inserted into the main rotating shaft and extends into the lower end of the main rotating shaft; the outer wall of the lower end of the main rotor is provided with water inlet holes 1-11.

A pre-stage intelligent water treatment system is formed by cascading a plurality of pre-stage water treatment devices; the pre-stage water treatment equipment is the pre-stage water treatment equipment; the cascade connection means that water pumped out by a water pumping pipe of the front-stage water treatment equipment of the previous stage enters an outer barrel of the front-stage water treatment equipment of the next stage, or enters the outer barrel of the front-stage water treatment equipment of the next stage after being buffered by a middle pool.

The water pumping pipe is provided with a flowmeter which is connected with the MCU; the outer barrel is in a barrel shape, an elliptic barrel shape or an N-sided barrel shape, and N is an integer greater than 5; the outer barrel is of a frame type structure or an integrated structure; the frame type structure is a frame comprising a lining and an outsourcing filter screen, and the integral structure is a frameless integral filter screen structure; the front-stage rotary filtering type water treatment device also comprises a water treatment agent adding mechanism for adding a water treatment agent to water to be treated in the outer barrel; the water treatment agent is flocculating agent such as ferrous sulfate, and can also be decolorizing agent; the bottom of the outer barrel is conical, and is adaptive, the bottom of the filter barrel is conical, namely, funnel-shaped, and the conical shape is conical or square conical. The support platform or the outside of the pre-stage water treatment device is provided with a pre-stage liquid pump connected with the water pumping pipe. The liquid pump can also be a front-stage water treatment device which does not comprise a rotary filter drum, can be externally arranged, and can also be integrated on a bracket, namely an indication platform; the bottom of the filter vat is provided with a magnetic levitation anti-water collector 9, and the magnetic levitation anti-water collector is positioned outside the filter vat.

The water treatment pre-stage equipment has the following characteristics:

(1) The rotary filter drum is adopted, so that the self-cleaning function is realized; the self-cleaning function is to wash out sundries on the surface of the filter barrel by utilizing the centrifugal force generated when the filter barrel rotates and the friction force with a water body, so as to achieve the self-cleaning effect.

(2) The device is provided with a pollution discharge mechanism and a liquid level detection mechanism;

(3) The modular structure is easy to cascade and move;

the water output by the pre-stage device enters a core water treatment device (namely an intelligent water treatment device and system with a rotary filter element).

Claims

1. The sewage treatment system based on the flocculation device and the DTRO is characterized by comprising the flocculation device and the DTRO device, wherein a water inlet of the DTRO device is connected with a water outlet of the flocculation device;

the flocculation device is used for flocculating, precipitating and discharging the sewage;

2. The sewage treatment system based on the flocculation device and the DTRO as claimed in claim 1, wherein the concentrate discharge outlet of the DTRO device is connected with the inlet of the flocculation device, namely the concentrate of the DTRO device flows back to the flocculation device for recycling.

3. The flocculation apparatus and DTRO based sewage treatment system as recited in claim 1, further comprising a sterilization and disinfection apparatus; the sterilizing and disinfecting device is in butt joint with the purified water discharge end of the DTRO device.

4. The flocculation apparatus and DTRO based sewage treatment system as recited in claim 1, further comprising a solid-liquid separator; the solid-liquid separator is in butt joint with the inlet of the flocculation device, and the liquid output by the solid-liquid separator enters the flocculation device.

5. The flocculation apparatus and DTRO based sewage treatment system as recited in any one of claims 1-4, wherein the flocculation apparatus is an intelligent water treatment apparatus.

6. The flocculation apparatus and DTRO based sewage treatment system of claim 5, wherein the intelligent water treatment apparatus comprises a vessel, a rotating filter element, a dosing mechanism and a controller; the controller controls water inlet, water discharge and slag discharge, controls the lifting and rotation of the rotary filter element, and controls the adding mechanism to add flocculant.

7. The flocculation apparatus and DTRO based wastewater treatment system of claim 6, wherein the intelligent water treatment apparatus further comprises a pre-filtration module.

8. The flocculation apparatus and DTRO based wastewater treatment system of claim 6, including a control module that controls operation of the intelligent water treatment apparatus and the DTRO apparatus.

9. The flocculation apparatus and DTRO based sewage treatment system of claim 8, wherein the control module is connected to a communication module for transmitting field data to a remote receiving end.

10. The flocculation apparatus and DTRO based sewage treatment system of claim 1, further comprising a three-dimensional electrolysis apparatus; the three-dimensional electrolysis device is connected with the concentrated solution outlet of the DTRO device, namely the concentrated solution discharged by the DTRO device is further processed by the three-dimensional electrolysis device.