CN108726706B

CN108726706B - Restaurant wastewater treatment equipment, restaurant wastewater treatment system and control method thereof

Info

Publication number: CN108726706B
Application number: CN201810549529.7A
Authority: CN
Inventors: 刘国雄
Original assignee: Suzhou Pinli Environmental Protection System Co ltd
Current assignee: Suzhou Pinli Environmental Protection System Co ltd
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2021-06-01
Anticipated expiration: 2038-05-31
Also published as: CN108726706A

Abstract

The invention discloses a restaurant wastewater treatment device, which comprises an oil-water separation bin; the circulating filter device comprises a filter container and a filter bin arranged in the filter container; the filter container comprises a water inlet, a water return port and a slag discharge port, the water inlet is arranged at the upper stream of the filter bin and is communicated with a water suction pump arranged on the side wall of the oil-water separation bin through a water pipe, and the other end of the water suction pump is connected with a slag suction device arranged at the bottom of the oil-water separation bin through a water pipe. The water return port is arranged at the downstream of the filtering bin and communicated with the oil-water separation bin, and the slag discharge port is arranged at the bottom of the filtering container and connected with the filtering bin; the water pump is controlled to be started when the controller receives a signal which is sent by the first water detection module and represents that no water exists, so that a solid-liquid mixture in the oil-water separation bin is pumped into the circulating filter device; and when the controller receives a signal which is sent by the first water detection module and represents water inflow, the controller controls the water suction pump to stop working.

Description

Restaurant wastewater treatment equipment, restaurant wastewater treatment system and control method thereof

Technical Field

The invention belongs to the technical field of wastewater treatment, and particularly relates to catering wastewater treatment equipment, a catering wastewater treatment system and a control method of the catering wastewater treatment equipment.

Background

At present, in the operation process of household dining and catering industry, a large amount of catering waste water can be generated, the general solid impurities in the catering waste water are more, the oil content is high, and the catering waste water also contains a large amount of micro particles, is easy to decay and deteriorate and pollutes the environment, so that some catering waste water treatment equipment can be arranged on the market at present, and can filter the solid impurities and carry out oil-water separation.

However, the existing restaurant wastewater treatment equipment has poor separation effect on sludge formed by deposition of tiny particles in the oil-water separation bin, and after the equipment is used for a period of time, the sludge is easy to block the equipment, so that the failure rate is high; moreover, the automatic control of the equipment is not perfect enough, many steps need manual operation, the accurate control cannot be realized, and the operating environment is severe.

Disclosure of Invention

The invention aims to provide a restaurant wastewater treatment device and a control method thereof.

In order to achieve the above object, an embodiment of the present invention discloses a restaurant wastewater treatment apparatus, including: the oil-water separation bin is used for separating oil and wastewater; the circulating filter device comprises a filter container and a filter bin arranged in the filter container; the filter container is including filtering water inlet, return water mouth and row's cinder notch, filter the water inlet set up in the upper reaches of filter house and with set up the suction pump of water oil separating bin lateral wall leads to pipe intercommunication, the other end lead to pipe of suction pump is connected with the sediment device of inhaling that sets up in water oil separating bin bottom. The water return port is arranged at the downstream of the filtering bin and is communicated with the oil-water separation bin, and the slag discharge port is arranged at the bottom of the filtering container and is connected with the filtering bin;

the restaurant wastewater treatment equipment is also provided with a first water inlet for receiving restaurant wastewater and a first water detection module, and the first water detection module is used for detecting whether water flows through the first water inlet;

the controller is electrically connected with the first water detection module and the water pump respectively; when the controller receives a signal which is sent by the first water detection module and represents that water is not available, the water suction pump is controlled to be started so as to pump a solid-liquid mixture in the oil-water separation bin into the circulating filter device; and when the controller receives a signal which is sent by the first water detection module and used for representing water inflow, the controller controls the water suction pump to stop working. .

As a further improvement of an embodiment of the present invention, a plurality of filtering holes are formed in a side wall of the filtering bin, a solid-liquid mixture from the oil-water separation bin enters the filtering bin from the filtering water inlet, and liquid in the solid-liquid mixture passes through the filtering holes and is discharged back to the oil-water separation bin from the water return port; the solid in the solid-liquid mixture is discharged to the slag discharging port through the filtering bin; the slag discharging port is provided with a valve, and when the valve is opened, the solid is discharged through the slag discharging port.

As a further improvement of an embodiment of the present invention, the valve is configured as a first solenoid valve, and the controller is electrically connected to the first solenoid valve; the controller controls the first electromagnetic valve to be opened or closed according to a preset slag discharge period.

As a further improvement of an embodiment of the present invention, an oil outlet, a second electromagnetic valve for controlling opening and closing of the oil outlet, and an oil level detection module for detecting an oil level in the oil-water separation bin are further disposed at an upper portion of the oil-water separation bin, and the controller is electrically connected to the second electromagnetic valve and the oil level detection module, respectively; the controller controls the second electromagnetic valve to be opened when receiving a signal which is sent by the oil level detection module and indicates that the oil level is higher than a preset height; and when the controller receives a signal which is sent by the oil level detection module and indicates that the oil level is lower than the preset height, the controller controls the second electromagnetic valve to be closed.

As a further improvement of an embodiment of the present invention, a temperature detection module and a heating module are further disposed in the oil-water separation bin at a position close to the oil outlet; the controller is electrically connected with the temperature detection module and the heating module respectively; the controller controls the heater to start working when receiving a signal that the representation oil level sent by the oil level detection module is higher than a preset height and a signal that the representation temperature sent by the temperature detection module is lower than a preset temperature; and when the controller receives a signal that the representation oil level sent by the oil level detection module is higher than the preset height and a signal that the representation temperature sent by the temperature detection module is higher than the preset temperature, the controller controls the heater to stop working and controls the second electromagnetic valve to be opened.

Another embodiment of the invention provides a restaurant wastewater treatment system, which further comprises a remote server, wherein the remote server is connected with the controller through a wireless data transceiver unit; fault detection units are respectively arranged on the water suction pump, the first water detection module, the temperature detection module, the heater, the first electromagnetic valve and the second electromagnetic valve; a fault sequencing library is arranged in the controller and used for storing the priority sequence corresponding to each fault module; when the controller receives a fault signal sent by the fault detection unit, the controller searches a priority sequence corresponding to the fault module in the fault sequencing library, wherein the content of the fault signal comprises a fault module name, a fault module position and a fault reason; when the controller finds the priority sequence corresponding to the fault module, the controller sends the fault signal and the corresponding priority sequence to the remote server

Another embodiment of the invention provides a control method of restaurant wastewater treatment equipment, wherein the restaurant wastewater treatment equipment comprises an oil-water separation bin and a circulating filter device, and comprises a filter container and a filter bin arranged in the filter container; the filter container comprises a water inlet, a water return port and a slag discharge port, the water inlet is arranged at the upstream of the filter bin and is communicated with a water suction pump arranged at the bottom of the oil-water separation bin through a water pipe, the water return port is arranged at the downstream of the filter bin and is communicated with the oil-water separation bin, and the slag discharge port is arranged at the bottom of the filter container and is connected with the filter bin; the restaurant wastewater treatment equipment is also provided with a first water inlet for receiving restaurant wastewater and a first water detection module, and the first water detection module is used for detecting whether water flows through the first water inlet; the controller is electrically connected with the first water detection module and the water pump respectively; the control method comprises the following steps: receiving a signal detected by the first water detection module; when the signal is characterized as being anhydrous, controlling the water suction pump to be started so as to pump water and sludge in the oil-water separation bin into the circulating filter device; and when the signal is characterized as water inflow, controlling the water suction pump to stop working.

As a further improvement of an embodiment of the present invention, the valve is configured as a first solenoid valve, and the controller is electrically connected to the first solenoid valve; the control method further comprises the following steps: detecting whether the slag is in a preset slag discharge period; when the slag discharge cycle is in, controlling the first electromagnetic valve to be opened; when the slag discharge cycle is not in the slag discharge cycle, controlling the first electromagnetic valve to close; wherein, the slag discharge period is a preset time period.

As a further improvement of an embodiment of the present invention, an oil outlet, a second electromagnetic valve for controlling opening and closing of the oil outlet, and an oil level detection module for detecting an oil level in the oil-water separation bin are further disposed at an upper portion of the oil-water separation bin, and the controller is electrically connected to the second electromagnetic valve and the oil level detection module, respectively; the control method further comprises the following steps: receiving an oil level signal sent by the oil level detection module; when the oil level signal is characterized that the oil level is higher than a preset height, controlling the second electromagnetic valve to be opened; and when the oil level signal is characterized in that the oil level is lower than a preset height, controlling the second electromagnetic valve to be closed.

As a further improvement of an embodiment of the present invention, a temperature detection module and a heating module are disposed in the oil-water separation bin at a position close to the oil outlet; the controller is electrically connected with the temperature detection module and the heating module respectively; the control method comprises the following steps: after receiving the signal that the representation oil level sent by the oil level detection module is higher than the preset height, the method further comprises the following steps: receiving a temperature signal sent by the temperature detection module; when the temperature signal is characterized in that the oil temperature is lower than a preset temperature, controlling the heater to start working; and when the temperature signal represents that the oil temperature is higher than the preset temperature, controlling the heater to stop working and controlling the second electromagnetic valve to be opened.

As a further improvement of an embodiment of the present invention, the controller is connected to the remote server through a wireless data transceiver; fault detection units are respectively arranged on the first water detection module, the temperature detection module, the first electromagnetic valve and the second electromagnetic valve; a fault sequencing library is arranged in the controller and used for storing the priority sequence corresponding to each fault module; the method comprises the following steps: receiving a fault signal sent by the fault detection unit, wherein the content of the fault signal comprises a fault module name, a fault module position and a fault reason; searching a priority order corresponding to the fault module in a fault sequencing library; and sending the fault signal and the corresponding priority order to the remote server.

Compared with the prior art, the catering wastewater treatment equipment provided by the invention is provided with the circulating filter device, and can be used for filtering sludge deposited in the oil-water separation bin, so that the equipment cannot be blocked, and the failure rate of the equipment is reduced. And set up first water detection module and controller, but automated inspection and control, when first water inlet does not have rivers, thereby the start-up of automatic control suction pump filters the silt in the water oil separating storehouse, has improved the automation rate, has saved manual operation.

Drawings

FIG. 1 is a schematic structural view of a wastewater treatment facility for Chinese food consumption according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a prescreening device according to an embodiment of the invention;

FIG. 3 is a schematic cross-sectional view of a solid-liquid separation chamber according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an oil-water separation bin according to an embodiment of the present invention;

FIG. 5 is a schematic view of an internal structure of the oil-water separation bin according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a circulating filter apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a water purification apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic flow chart illustrating a method for controlling a wastewater treatment facility for Chinese food consumption according to an embodiment of the present invention;

FIG. 9 is a schematic flow chart illustrating a method for controlling a wastewater treatment facility for Chinese food consumption according to an embodiment of the present invention;

FIG. 10 is a schematic flow chart illustrating a method for controlling a wastewater treatment facility for Chinese food consumption according to an embodiment of the present invention;

FIG. 11 is a schematic flow chart illustrating a method for controlling a wastewater treatment facility for Chinese food consumption according to an embodiment of the present invention;

FIG. 12 is a schematic flow chart illustrating a method for controlling a wastewater treatment facility for Chinese food consumption according to an embodiment of the present invention;

fig. 13 is a flowchart illustrating a method for controlling a wastewater treatment facility for Chinese food consumption according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

It will be understood that terms used herein such as "upper," "above," "lower," "below," and the like, refer to relative positions in space and are used for convenience in description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

As shown in FIGS. 1 to 7, the restaurant wastewater treatment facility 1 of the present invention is described. In the present embodiment, the restaurant wastewater treatment apparatus 1 includes: a prescreening device 100 for separating bulk solids; a solid-liquid separation bin 200 for secondary separation of solids; an oil-water separation bin 300 for separating oil and wastewater; a water purification apparatus 500 for purifying wastewater; and a lifting means 600 for lifting the treated water to a height. The primary screening device 100, the solid-liquid separation bin 200, the oil-water separation bin 300, the water purification device 500 and the lifting device 600 are sequentially connected through pipelines. Which will be separately described below.

In the embodiment of the invention, the restaurant wastewater treatment equipment 1 is generally installed in underground positions such as basements or sewers for convenient use. The primary screen device 100 is provided with a primary screen water inlet 111, and the primary screen water inlet 111 is connected with a kitchen sewer pipeline of a household or a catering enterprise to receive catering waste water. In the initial restaurant waste water, there are many large solid objects such as large food, tableware, objects falling down the sewer, etc., and thus the use of the prescreening device 100 is required to separate the large solid objects.

Specifically, as shown in fig. 2, the prescreen device 100 includes a prescreen box 110, a basket 120 disposed inside the prescreen box 110, and a cover 130 disposed above the basket 120. The prescreening box body 110 is a cuboid with an opening at the upper part, and the shape of the lifting basket 120 is matched with that of the prescreening box body 110 and is also a cuboid. The basket 120 is sized slightly smaller than the prescreen box 110 to collect as much solids as possible. The basket 120 includes a side wall and a bottom wall, and a plurality of sieve holes 121 are formed in the side wall and the bottom wall. The diameter of the screen holes 121 is between 30mm and 10 mm. In the embodiment of the present invention, the diameter of the sieve hole 121 is set to be 20mm, so that the solid matters in the restaurant wastewater can be roughly filtered.

The primary screen water inlet 111 is arranged on the side wall of the primary screen box body 110, and a basket opening 122 matched with the size of the primary screen water inlet 111 is formed in the position, corresponding to the primary screen water inlet 111, on the side wall of the basket, so that after catering wastewater containing large solid substances enters from the primary screen water inlet, the catering wastewater can directly enter the basket 120 through the basket opening 122. The prescreen inlet 111 is of a large size to enable large pieces of solid matter to be conveyed into the basket 120. The two handles 123 are oppositely arranged on the upper edges of the side walls of the lifting basket 120. In the wastewater treatment process, if the solid matter in the basket 120 is too much, the box cover 130 can be opened, the handle 123 can be grasped to take out the basket 120, the solid matter in the basket 120 can be poured into a garbage can or the like, and then the basket 120 can be put into the prescreening box body 110 to continuously separate the large solid matter.

The primary screen box body 110 is provided with a primary screen water outlet 112 at a position opposite to the primary screen water inlet 111, and the primary screen water outlet 112 is connected with the solid-liquid separation bin 200 through a pipeline.

After the restaurant wastewater is roughly filtered by the primary screening device 100, large solid matters are already separated, but the wastewater still contains more than 20mm of solid matters, so that the solid matters are required to be secondarily separated by the solid-liquid separation bin 200. As shown in fig. 3, the solid-liquid separation bin 200 includes a water diversion bin body 210 disposed at the lower part and a conveying bin body 220 disposed at the upper part, and the water diversion bin body 210 and the conveying bin body 220 are separated by a filter screen 221. The filter screen 221 is provided with a plurality of conveying bin filter holes, and the diameter of each conveying bin filter hole can be set between 10mm and 2 mm. In the embodiment of the invention, the diameter of the filtering hole of the conveying bin is set to be 3mm, so that solid matters in the restaurant wastewater can be secondarily filtered, and the solid matters larger than 3mm can be separated. A screw conveyor 222 is arranged in the conveying cabin body 220, and the tail end of the screw conveyor 222 is connected with a solid pipeline 230 and a solid storage barrel 240; the screw 222 includes an impeller 2221 and a motor 2222 for driving the impeller, which is provided at the other end opposite to the end of the screw 222. The impeller 2222 of the screw conveyor is obliquely arranged, and one end connected to the motor 2222 is gradually extended upward toward the tip thereof. The conveying bin body 220 is provided with a first water inlet 223, and the first water inlet 223 is connected with the primary screen water outlet 112 through a pipeline. The solid-liquid separation chamber 200 is a strip chamber body, and the section of the chamber body is in a gourd shape with a small upper part and a big lower part on the surface vertical to the length direction, and the upper part and the lower part are in arc smooth transition. The conveying bin body 220 is arranged at the upper part of the water diversion bin body 210, the filter screen 221 is in an arc shape and wraps the lower surface of the impeller 2221, and the two ends of the filter screen 221 are abutted against the bin wall of the solid-liquid separation bin 200.

When water flows into the first water inlet 223, the restaurant wastewater carries solid substances into the conveying bin body 220, meanwhile, the water flows downwards into the water diversion bin body through the conveying bin filter holes on the filter screen, and the solid substances are remained in the conveying bin body. When the motor 2222 is activated, the impeller 2221 of the auger rotates and conveys the solids through the solids conduit 230 into the solids storage drum 240.

The first water inlet 223 is provided with a first water detection module 224, and the first water detection module 224 is used for detecting whether water flows through the first water inlet 223. In the embodiment of the present invention, the first water detecting module 224 is a water sensor, which is based on the principle of liquid conduction, and detects whether water exists by using an electrode, and then converts the water sensor into dry contact for output.

The bottom surface of the water diversion chamber body 210 is provided with a solid-liquid separation water outlet 211, and the solid-liquid separation water outlet 211 is connected with the oil-water separation chamber 300 through a pipeline.

Because the waste water is produced in the process of catering, the waste water contains a large amount of grease which can block pipelines and cause pollution if discharged. Therefore, after solids larger than 3mm are separated from the restaurant waste water, grease needs to be separated from the restaurant waste water using a special oil-water separation bin 300.

As shown in fig. 4 to 5, the oil-water separation chamber 300 according to the embodiment of the present invention separates oil from water by using the principle of different water-oil ratios. The oil has a smaller specific gravity than water, and therefore, the oil naturally floats on the surface of water when the oil-water mixture is left standing. Therefore, after the restaurant wastewater enters the oil-water separation bin 300, a state is naturally formed in which the upper portion is an oil storage area and the lower portion is a water storage area, and the oil storage area is communicated with the water storage area. In the embodiment of the present invention, the oil-water separation chamber is configured such that the upper portion 310 has a smaller size, the lower portion 320 has a larger size, the upper portion has a smaller size, the lower portion has a larger size, the upper portion and the lower portion have smooth transition of arc surfaces, and the cross section of the oil-water separation chamber is similar to a gourd shape on a plane perpendicular to the thickness direction of the oil-water separation chamber. The upper part 310 and the lower part 320 of the oil-water separation chamber 300 have the same thickness. And the ratio of the height dimension of the upper portion 310 to the height dimension of the lower portion 320 ranges between 1:1 and 1: 3. The ratio of the width dimension of the upper portion 310 to the width dimension of the lower portion 320 ranges from 1:2 to 1: 4. In the embodiment of the present invention, the ratio of the height dimension of the upper portion 310 to the height dimension of the lower portion 320 of the oil-water separation bin 300 is set to 1: 1.5. Specifically, the oil-water separation chamber 300 has an overall height of 1500mm, an upper portion 310 of 600mm, and a lower portion 320 of 900 mm. And the ratio of the width dimension of the upper part 310 to the width dimension of the lower part 320 of the oil-water separation bin 300 is set to 1: 3. Specifically, the upper portion 310 has a width dimension of 300mm, and the lower portion 320 has a width dimension of 1500 mm.

An oil outlet 311 is disposed on a side wall of the upper portion 310 of the oil-water separation bin 300, and the oil outlet 311 may be disposed at a position more than two thirds of the overall height of the oil-water separation bin 300, for example, the overall height of the oil-water separation bin 300 is 1500mm, and the oil outlet 310 is disposed at a position higher than the side wall of the oil-water separation bin by more than 1000 mm. On the sidewall of the lower part 320 of the oil-water separation bin 300, an arc transition joint part near the upper part 310 thereof is provided with a water outlet opening 321, an inner water outlet pipe 322 is arranged in the lower part 320 of the oil-water separation bin, the inner water outlet pipe 322 extends upwards from the bottom of the oil-water separation bin 300 and passes through the water outlet opening 321, and is bent ninety degrees at a preset height, where an outer water outlet 330 is arranged. The preset height is only required to be lower than the height of the oil outlet 311. In the embodiment of the present invention, the height of the outer water outlet 330 is lower than the height of the oil outlet 311 by 10mm or more. This is provided mainly to prevent water from being discharged from the oil outlet 311.

When more and more catering waste water is in the oil-water separation bin 300, after a period of time, all oil floats on the surface of water and is positioned at the upper part 320 of the oil-water separation bin. When the water level of the water storage area is higher than the height of the water outlet 330, water naturally overflows from the water outlet 330. And when the oil level above the water reaches the height of the oil outlet 311, the oil can be discharged from the oil outlet 311.

Further, a second electromagnetic valve 312 for controlling opening and closing of the oil outlet is arranged at the oil outlet 311, an oil level detection module 313 for detecting an oil level is arranged near the oil outlet 311, and the controller 700 is electrically connected with the second electromagnetic valve 312 and the oil level detection module 313 respectively; the oil level detection module 313 may detect whether the oil level reaches a preset height, and if the oil level reaches the preset height, the controller 700 may control the second electromagnetic valve 312 to be opened to discharge the oil from the oil outlet 311. In an embodiment of the present invention, the oil level detection module 313 may be a liquid level sensor, and the liquid level sensor may detect the oil level and transmit the oil level data to the controller. The oil outlet 311 can be connected with an oil outlet pipe 340 and an oil storage barrel 350, and separated oil is collected.

In some cases where the ambient temperature is low, the oil may be solidified, and at this time, even if the oil level reaches the preset height and the second electromagnetic valve 312 is opened, the solidified oil is not easily discharged from the oil outlet 311. Therefore, a temperature detection module 314 and a heating module 315 are arranged at the upper part 310 of the oil-water separation bin near the oil outlet 311; the controller 700 is electrically connected to the temperature detection module 314 and the heating module 315, respectively, the temperature detection module 314 detects the oil temperature in the oil storage area, and if the detected oil temperature is lower than a preset temperature, the controller 700 can control the heating module 315 to start working; at this time, the temperature detection module 314 continuously detects the oil temperature, and after the heating module 315 operates for a period of time, if the detected oil temperature is higher than a preset temperature, the heating module 315 is controlled to stop operating and the second electromagnetic valve 312 is controlled to open. At this time, the oil is heated to a preset temperature, does not solidify, and can flow out of the oil outlet 311. In the embodiment of the present invention, the preset temperature may be set to 20 ℃, and at 20 ℃ and above, the oil has better fluidity and can be discharged from the oil outlet 311. In the embodiment of the present invention, the temperature detecting module 314 is a temperature sensor, and the heating module 315 is a heating wire.

Further, a second water detection module 331 is disposed at the water outlet 330, and the second water detection module 331 is configured to detect whether water flows out of the water outlet 330. Because a part of water is placed in the oil-water separation bin during the testing stage of the restaurant wastewater treatment equipment, and most of solid matters are filtered from the restaurant wastewater when the restaurant wastewater passes through the basket device 100 and enter the restaurant wastewater in the solid-liquid separation bin 200, the amount of the solid matters is small. Therefore, the screw conveyor 222 does not always work. In this state, when water flows out of the water outlet 330, that is, a kitchen sewer pipe representing a home or a restaurant enterprise discharges restaurant wastewater to the restaurant wastewater treatment apparatus 1. In order to save energy consumption, instead of operating the motor 2222 of the screw conveyor 222 all the time, the second water detection module 331 may be used to detect whether water flows through the water outlet 330, and if the second water detection module 331 detects that water flows through the water outlet 330, the controller controls the motor 2222 to operate.

In the embodiment of the present invention, the second water detecting module 331 is a water sensor, and the water sensor is based on the liquid conduction principle, and detects whether water exists by using an electrode, and then converts the water into dry contact point output by using the sensor, so that whether water flows through the water outlet 330 can be detected. Of course, it is possible that only very little waste water flows out of the outer water outlet 330, or that a small amount of waste water remains at the outer water outlet 330, when it is not necessary to stop the suction pump. In order to reduce the equipment and energy loss caused by frequent switching of the water pump, the first water detection module can be set to determine which signal to send according to the detected water quantity. If the amount of water entering the primary inlet is less than a predetermined water amount value (which may be a small value such as 5ml or 10ml, etc.), a signal indicative of no water may still be sent to controller 700.

The outlet port 330 is connected to a water purification apparatus 500 through a pipe, and the waste water discharged from the outlet port 330 flows into the water purification apparatus 500 through the pipe.

Meanwhile, since the water in the water storage area still contains a large amount of small particles, after the water storage area is used for a period of time, a large amount of sludge is deposited on the lower portion 320 of the oil-water separation bin, and if the sludge is not treated, the sludge blocks the oil-water separation bin 300, so that the oil-water separation bin cannot perform the oil-water separation function. Therefore, the restaurant wastewater treatment system further comprises a circulating filter device 400.

As shown in fig. 6, the circulation filter device 400 includes a filter container 410 and a filter cartridge 420 disposed in the filter container 410; the filtering container 410 comprises a filtering water inlet 411, a water return port 412 and a slag discharge port 413, the filtering water inlet 411 is arranged at the upstream of the filtering bin 420 and is selectively communicated with the oil-water separation bin 300, the water return port 412 is arranged at the downstream of the filtering bin 420 and is communicated with the oil-water separation bin 300, and the slag discharge port 412 is arranged at the bottom of the filtering container 410 and is connected with the filtering bin 420.

The lateral wall of filtering the storehouse 420 sets up a plurality of filtration holes 421, comes from the solid-liquid mixture in the 300 storehouses of oil water separation from filtering water inlet 411 and getting into filtering the storehouse 420, liquid in the solid-liquid mixture passes through filtering holes 421 and follow return water mouth 412 is arranged back oil water separation storehouse 300, and the solid warp in the solid-liquid mixture filters the storehouse 420 and arranges the cinder notch 413. The slag discharge port is provided with a valve, and when the valve is opened, the solid is discharged through the slag discharge port 413.

In the embodiment of the present invention, the filtering container 410 is a cylindrical box body, and the filtering container 410 is enclosed by a top plate, a side plate and a bottom plate which are connected with each other, and both the top plate and the bottom plate are circular plates. The filtering water inlet 411 is arranged at the circle center of the top plate, the water return port 412 is arranged at the position of the bottom plate close to the edge, and the slag discharge port 413 is arranged at the circular position of the bottom plate. The filter cartridge 420 is disposed at the center of the filter container 410, and the top of the filter cartridge 420 abuts against the top plate of the filter container 410.

Specifically, a water pump 360 may be disposed on a side wall of the oil-water separation bin 300, one end of the water pump 360 is communicated with the filtering water inlet 411 through a pipeline, and the other end of the water pump is connected with a slag suction device 370 disposed at the bottom of the oil-water separation bin through a pipeline. The slag sucker 370 is a rectangular container, and a plurality of slag sucking holes are arranged on the bottom plate. When the water pump 360 is started, the solid-liquid mixture at the bottom of the oil-water separation bin 300 can be sucked into the slag suction device 360 and enters the filtering water inlet 411 through a pipeline, and then enters the filtering bin 420. In the embodiment of the present invention, as shown in fig. 4, the liquid is firstly discharged into the solid-liquid separation chamber 200 through the water return port 412, and then discharged back to the oil-water separation chamber 300 through the solid-liquid separation water outlet 211, so the arrangement is mainly because the positions of the circulating filter device 400 and the solid-liquid separation chamber 200 are close, and the pipeline arrangement is convenient. In another embodiment, the liquid may be directly discharged from the return port 412 to the oil-water separation chamber 300 without entering the solid-liquid separation chamber 200. The solid in the solid-liquid mixture is discharged to the slag discharging port 413 through the filtering bin 420; the slag discharge port 413 is provided with a valve, and when the valve is opened, the solid is discharged through the slag discharge port 412.

The filtering bin 420 comprises an upper part provided with a plurality of filtering holes 420 and an opposite lower part, the lower part is configured to be a slag storage space 422, the slag discharge port 412 is arranged at the bottom of the slag storage space 422, and the slag storage space 422 is isolated from liquid outside the filtering bin 420, i.e. no filtering hole is arranged on the side wall of the slag storage space 422. After the solid-liquid mixture enters the filter bin 420, the liquid is discharged to the outside of the filter bin 420 through the filter holes 421, and the solid is temporarily stored in the slag storage space 422. The ratio of the volume of the upper part of the filter bin 420 to the volume of the slag storage space 422 is in the range of 2:1 to 3: 1. Because most of the solid-liquid mixture is liquid, the upper volume of the filtering bin 420 with the filtering holes 421 is set to be larger, so that water can be discharged out of the filtering bin 420 as much as possible, and only the solid is retained in the slag storage space 422. In the embodiment of the present invention, the ratio of the volume of the upper portion of the filter bin 420 to the volume of the slag deposit space 422 is about 2:1, and may be greater or less than this ratio, as long as the volume of the upper portion of the filter bin 420 is set to be greater than the volume of the slag deposit space 422, which is not limited in the embodiment of the present invention.

The size of the slag storage space 422 in the horizontal direction is gradually reduced along the direction close to the slag discharge port 413. In the present embodiment, the slag trap space 422 is a funnel shape, and the diameter of the funnel shape gradually decreases downward along the vertical direction. This is mainly provided for the purpose of finally connecting the side wall of the slag trap space 422 to the slag discharge opening 413. In other embodiments, the size of the slag trap space 413 in the horizontal direction may be uniform in the vertical direction, and the solids in the filter silo 420 may be discharged from the slag discharge port 413 by abutting the lower portion of the side wall of the filter silo 420 against the bottom plate of the filter container 410.

A stirring rod (not shown) is vertically arranged in the slag storage space 422 and is connected with a transmission unit, and when the valve is opened, the stirring rod is driven by the transmission unit to rotate so as to stir the solid in the slag storage space 422. When the solid is left in the slag storage space 422 for a long time, the solid may be solidified, and even if the valve is opened, the solid is not easy to be discharged from the slag discharge port 413, and the solid is stirred by the stirring rod, so that the solid can be conveniently stirred and smoothly discharged from the slag discharge port 413.

In the embodiment of the present invention, the diameter of the slag discharge hole 413 is larger than the diameter of the filtering water inlet 411, and specifically, the ratio range of the diameter of the slag discharge hole 413 to the diameter of the filtering water inlet 411 is 2:1 to 4: 1. since the volume of the solid is large and the suction pump 360 is not activated all the time, the slag discharge port 413 needs to be set large to facilitate the discharge of the solid. The ratio range of the diameter of the slag discharge port 413 to the diameter of the filtering water inlet 411 can be set to be 2:1 to 4:1, in the embodiment of the invention, the optimal ratio of the diameter of the slag discharging port 413 to the diameter of the filtering water inlet 411 is 3: 1. In another embodiment, the ratio of the diameter of the slag discharge hole 413 to the diameter of the filtering water inlet 411 may be larger or smaller than this ratio, as long as the diameter of the slag discharge hole 413 is set to be larger than the diameter of the filtering water inlet 411, which is not limited in the embodiment of the present invention.

In another embodiment, the filter bin may be provided with a plurality of layers of side walls from inside to outside, and each layer of the side walls is provided with the filter holes. The solid can be filtered for many times by arranging a plurality of layers of side walls with filtering holes; the diameters of the filtering holes on the side walls of each layer can be the same or different, if the diameters on the side walls of each layer are different, the diameters can be gradually reduced from outside to inside, and more tiny solid substances can be filtered.

The valve is configured as a first electromagnetic valve 414, and the first electromagnetic valve 414 is electrically connected with the controller 700; the controller 700 controls the first electromagnetic valve 414 to open or close according to a preset slag discharge period.

Specifically, the controller 700 detects whether the preset slag discharge period is reached. When in a slag discharge period, the controller can control the first electromagnetic valve 414 to be opened, and the solid can be discharged from the slag discharge port 413; when not in the slagging cycle, the controller may control the first electromagnetic valve 414 to close. Wherein, the slag discharge period is a preset time period. In the circulation filter device 400, the opening and closing of the slag discharge port 413 are controlled by the first electromagnetic valve 414. In fact, the first electromagnetic valve 414 is normally closed when the water pump 360 is activated, so as to prevent the waste water from flowing out of the slag discharge port while flowing through the circulation filter device 400. In the embodiment of the present invention, a slag discharge period may be preset in the controller 700, and the slag discharge period is a preset time period. For example, the first solenoid valve 414 may be opened every 30 minutes for 5 minutes; alternatively, the first solenoid valve 414 may be opened for 10 minutes every 2 hours, which may be determined according to the volume of wastewater and the volume of solids. In addition, during the slag discharging period, the controller 700 may first detect whether the water pump 360 is in the start state before controlling the first electromagnetic valve 414 to open, and if not, the controller 700 may control the first electromagnetic valve 414 to open.

Further, when the kitchen sewer line of a home or a catering enterprise discharges the catering waste water to the catering waste water treatment apparatus 1, in order not to affect the waste water treatment process, the circulation filter device is set to be not operated in this process. Therefore, it is possible to detect whether the kitchen sewer pipe of a home or a restaurant enterprise discharges restaurant wastewater to the restaurant wastewater treatment apparatus 1 by using the first water detection 224 provided at the first water inlet 223 in the solid-liquid separation bin 200, thereby controlling the water suction pump 360 to start or stop operating by using the controller 700.

Specifically, the controller 700 controls the water pump 360 to start to pump water and sludge in the oil-water separation bin into the circulating filter device when acquiring the signal that is sent by the first water detection module 224 and is characterized by no water; and when the controller acquires a signal which is sent by the first water detection module and is characterized by water inlet, the controller controls the water suction pump to stop working.

The restaurant wastewater after the oil-water separation in the oil-water separation bin 300 is basically free of solid matters and oil, but the water is still turbid and contains some pollutants and harmful substances, so that the restaurant wastewater needs to be purified and then discharged into municipal drainage pipelines. The water in the oil-water separation chamber 300 is discharged into a water purification apparatus 500 through the water outlet 330 and the water pipe.

As shown in fig. 7, the water purification apparatus 500 includes a purification container 510, a purification water inlet 511 disposed at an upper portion of the purification container 510, a water outlet 512 disposed at a lower portion of the purification container 510, and a plurality of purification assemblies 513 disposed from top to bottom and disposed inside the purification container 510, each layer of purification assembly 513 includes a plurality of purifiers 514 disposed in parallel, the purifiers 514 are vertically disposed in the purification container 510, an upper portion of each purifier 514 is disposed at a water inlet 5141 communicating with the purification water inlet 511, a lower portion of each purifier is disposed at a plurality of filtering holes 5142, a purification material is disposed in each purifier 514, and the purifiers 514 in the purification assemblies 513 of two adjacent layers are disposed correspondingly up and down.

In the embodiment of the present invention, the purification container 510 is a rectangular container, a plurality of purification modules 513 are disposed inside the purification container, and the purifiers 514 in each purification module 513 may be arranged in a matrix. Specifically, two layers of purification assemblies 513 are arranged in the purification container 510, 16 purifiers 514 are arranged in each layer of purification assembly 513, and the purifiers 514 in each layer of purification assembly 513 are arranged in a 4 × 4 matrix. In further embodiments, the purifier may be provided in one or more. The purification component can be one or more layers. For example, three or four purification modules can be provided, the number of purifiers in each purification module can be 12 or 18, and the like, and the purification modules can be determined according to the amount of wastewater to be purified and the size ratio of the purification container to the purifiers. The arrangement of the purifiers may be in a matrix form or a non-matrix form, and the embodiment of the present invention is not limited thereto.

The horizontal dimension of the purifier 514 gradually decreases in a vertically downward direction. Specifically, the purifier 514 is a funnel type, and the diameter thereof is gradually reduced in a vertically downward direction. The purifier is arranged to be a funnel type, so that water can slowly flow out of the purifier 514, the existence time of the water in the purifier 514 is prolonged, and the purifying effect can be well played. In other embodiments, the purifier may also be shaped like an inverted bottle of mineral water, the base of which has a smaller diameter.

In each of the purifiers 514, a ratio of the diameter of the inlet hole 5141 to the diameter of the filtering hole 5142 ranges from 40:1 to 50: 1. specifically, the upper portion of the purifier 514 is open, that is, an inlet hole 5141 of the purifier 514. The lower portion of the purifier 514 is provided with a bottom wall, and a plurality of filtering holes 5142 are formed on the bottom wall and the side wall close to the bottom wall. The water inlet 5141 arranged at the upper part of the purifier 514 is used for receiving wastewater, and has larger size and can receive more wastewater; the wastewater flowing to the lower part of the purifier 514 needs to pass through the purifying material in the purifier 514 to achieve the purifying effect. It is desirable to provide the filter holes 5142 as small as possible, one that does not filter out the purification material, and another that allows the water to flow out of the purifier 514 more slowly, extending its residence time in the purifier 514, so that the purification material performs better in purification.

In an embodiment of the invention, the purification material is yellow sand or river sand. The invention uses the yellow sand with larger particles, and the purifying material can be other materials, such as active carbon and the like, and can adsorb pollutants and harmful substances in the wastewater.

A water inlet space 515 communicated with the purification water inlet 511 is arranged at the upper part of the purification container 410, and a water discharge space 516 communicated with the water discharge port 512 is arranged at the lower part; the inlet hole 5141 of the upper purifier 514 is communicated with the inlet space 515, the filtering hole 5142 of the lower purifier 514 is communicated with the drain space 516, and the filtering hole 5142 of the upper purifier 514 is correspondingly arranged with the inlet hole 5141 of the lower purifier 514.

In one embodiment of the present invention, the purification vessel is a frame structure, and the surrounding walls thereof are not sealed. In another embodiment, the purge vessel may be provided with four side walls, which are sealed at their sides. The water inlet space 515 is disposed at the upper portion of the purifying container 410, and is surrounded by the upper frame of the purifying container 410, and the purifying water inlet is disposed at the side of the purifying container 510 where the water inlet space 515 is located. The bottom of the water inlet space 515 may be provided with a first flat plate 517, the first flat plate 517 is provided with a plurality of openings, and the water inlet holes 5141 of the upper purifier 510 are arranged corresponding to the openings. The upper portion of the scrubber 510 may be welded or bonded to the edge of the opening. Likewise, for the lower purifier 510, a second plate 518 may be provided at a suitable distance from the bottom of the upper purifier 510, and four sides of the second plate 518 may be welded or bonded to the purifier 510. A plurality of openings are formed in the second plate 518 at positions corresponding to the upper purifier 510, and water inlet holes 5141 of the lower purifier 510 are formed to correspond to the openings, so that the upper part of the purifier 510 can be welded or bonded to the edges of the openings. The drain space 516 is provided at the lower portion of the purification container 510 and is defined by the lower portion of the purification container 510, and the drain port 512 is provided at the side of the purification container 510 where the drain space 516 is provided. The purge inlet 511 and the drain 512 may be provided on opposite sides of the purge vessel 510, respectively.

The ratio of the height of the purification vessel 510 to the height of the inlet space 515 ranges from 10:1 to 15: 1; the ratio of the height of the purification vessel 510 to the height of the drainage space 516 ranges from 4:1 to 8: 1; the ratio of the height of the purge vessel 510 to the height of the filter 514 ranges from 3:1 to 5: 1.

In an embodiment of the present invention, the ratio of the height of the purification vessel 510 to the height of the inlet water space 515 is 12: 1; the ratio of the height of the purge vessel 510 to the height of the drain space 516 is 6: 1; the ratio of the height of the purge vessel 510 to the height of the filter 514 is in the range of 4: 1. Specifically, the height of the purification vessel 510 may be 1200mm, the height of the inlet water space 515 may be 100mm, the height of the outlet water space may be 200mm, and the height of one purifier 510 is 300 mm. In this way, a double-layered filter assembly may be provided in the purification vessel 510.

In other embodiments, the height of the purification container, the height of the water inlet space, the height of the water outlet space, and the height of the purifier may have other values, and the ratio of these to the purification container may have other ratios. The height of the water inlet space, the water outlet space and the purifier can be determined according to the amount of waste water to be purified and the size of the purifying container.

After purification by the water purification device 500, the restaurant waste water is now almost free of solids and the pollutants are also filtered out, substantially meeting the discharge standards. At this point, the water needs to be drained into municipal drainage pipelines. The restaurant wastewater treatment system 1 according to the embodiment of the present invention is generally installed in an underground location such as a basement or a sewer, etc., and is located at a low position, so that a lifting device 600 is required to lift and discharge water into a municipal drainage pipeline.

Specifically, the purification outlet 512 is connected to a lifting device 600 through a pipeline, the lifting device includes a lifting box 610, a lift pump (not shown) disposed in the lifting box 610, and a lift pipe 620 connected to the lift pump, and the lift pipe 620 extends vertically upward to be connected to a municipal drain pipe. After the water enters the lift tank 610, the water is pumped into the lift water pipe 620 by activating the lift water pump. Meanwhile, the municipal drainage pipe is provided with a public drainage port to which the lift pipe 620 is connected, so that water finally flows into the municipal drainage pipe.

In another embodiment, the restaurant wastewater treatment equipment can also be directly connected with a sewer pipe of a kitchen by the solid-liquid separation bin without a primary screening device so as to receive restaurant wastewater. Alternatively, additional means for separating bulk solid matter may be provided. In addition, the primary screening device and the solid-liquid separation bin can be combined into a solid-liquid separation device, and the wastewater directly flows to the solid-liquid separation device and then enters the oil-water separation bin.

In another embodiment, if the restaurant wastewater treatment equipment is arranged at a higher position, the lifting device is not needed, and the water outlet of the water purification device is directly connected with the municipal water drainage pipe.

As shown in FIGS. 8-13, the invention also discloses a control method of the restaurant wastewater treatment equipment, which is realized by using the restaurant wastewater treatment equipment 1. The method comprises the following steps:

s101, acquiring a signal detected by the first water detection module 224;

s102, when the signal is represented as no water, controlling the water pump 360 to be started so as to pump the water and the sludge in the oil-water separation bin 300 into the circulating filter device 400;

and when the signal is characterized as water inlet, controlling the water suction pump 360 to stop working.

Specifically, when kitchen sewer pipes of a household or a catering enterprise discharge catering wastewater to the catering wastewater treatment equipment 1, the catering wastewater may sequentially pass through the primary screening device 100, the solid-liquid separation bin 200, the oil-water separation bin 300, the water purification device 500 and the lifting device 600. In order not to interfere with this wastewater treatment process, the circulation filter device 400 is set to be inoperative during this process. Therefore, it is possible to detect whether the kitchen sewer pipe of a home or a restaurant enterprise discharges restaurant wastewater to the restaurant wastewater treatment apparatus 1 using the first water detection module 224, thereby controlling the water pump 360 to start or stop operating using the controller 700.

In the embodiment of the present invention, the first water detecting module 224 is a water sensor, which is based on the principle of liquid conduction, and detects whether water exists by using electrodes, and then converts the water to dry contact output by using the sensor, so as to detect whether water exists at the first water inlet 223. Of course, it is possible that only very little waste water enters the first water inlet 223, or a small amount of waste water remains at the first water inlet 223, at which time it is not necessary to stop the suction pump 360. In order to reduce the equipment and energy consumption caused by frequent switching of the water pump 360, the first water detection module 224 may be configured to determine what kind of signal to send according to the detected amount of water. If the amount of water entering first inlet 223 is less than a predetermined water amount value (which may be a small value, such as 5ml or 10ml, etc.), a signal indicative of no water may still be sent to controller 700.

The control method further comprises the following steps:

s201, detecting whether the slag is in a preset slag discharge period;

s202, when the slag-off period is reached, controlling the first electromagnetic valve 414 to be opened; when the slag-off period is not reached, the first electromagnetic valve 414 is controlled to be closed.

Wherein, the slag discharge period is a preset time period.

In the circulation filter device 400, the opening and closing of the slag discharge port is controlled by the first electromagnetic valve 414. In fact, the first electromagnetic valve 414 is normally closed when the water pump 360 is activated, so as to prevent the waste water from flowing out of the slag discharge port while flowing through the circulation filter device 400. In the embodiment of the present invention, a slag discharge period may be preset in the controller 700, and the slag discharge period is a preset time period. For example, the first solenoid valve 414 may be opened every 30 minutes for 5 minutes; alternatively, the first electromagnetic valve 414 may be opened for 10 minutes every 2 hours, or the like, which may be determined based on the amount of wastewater and the amount of solids.

In an embodiment of the present invention, the control method further includes the steps of:

s301, receiving an oil level signal sent by the oil level detection module 313;

s302, when the oil level represented by the oil level signal is higher than a preset height, controlling the second electromagnetic valve 312 to be opened; when the oil level represented by the oil level signal is lower than a preset height, the second electromagnetic valve 312 is controlled to be closed.

In the oil-water separation bin 300, the oil level detection module 313 continuously detects the oil level in the oil storage area, when the oil level is higher than a preset height, the oil level detection module 313 sends an oil full signal to the controller 700, and when the controller 700 receives the oil full signal, the controller 700 controls the second electromagnetic valve 312 to be opened, so that the oil is discharged to the oil storage barrel 350 through the oil outlet 311 and the oil outlet pipe 340, and the separated oil is collected. In the embodiment of the present invention, the oil level detecting module 313 is a liquid level sensor, and the liquid level sensor can detect the height of the oil in the oil storage area more accurately. Specifically, the oil level detection module 313 may be configured to determine what signal to send based on the specific value of the detected oil level. If the value of the oil level above the preset height is less than the preset value (may be a small value, such as only 1mm or 0.1ml higher than the preset height), an oil level signal indicating that the oil level is below the preset height may be sent to the controller 700; and when the oil level is higher than the preset height vertically more than the preset value, an oil level signal indicating that the oil level is higher than the preset height is transmitted to the controller 700. This reduces the equipment and energy consumption caused by frequent opening and closing of the second solenoid valve 312.

In step S302, before controlling the second electromagnetic valve 312 to open when the oil level represented by the oil level signal is higher than a preset height, the method further includes the following steps:

s3021, receiving the temperature signal sent by the temperature detection module 314;

s3022, when the oil temperature represented by the temperature signal is lower than a preset temperature, controlling the heating module 315 to start working;

and S3023, when the oil temperature represented by the temperature signal is higher than a preset temperature, controlling the heating module 315 to stop working and controlling the second electromagnetic valve 312 to open.

In some cases where the ambient temperature is low, the oil may be solidified, and at this time, even if the oil level reaches the preset height and the second electromagnetic valve 312 is opened, the solidified oil is not easily discharged from the oil outlet 311. Therefore, the temperature of the oil near the oil port 311 is detected by the temperature detection module 314, in the embodiment of the present invention, the temperature detection module 314 is a temperature sensor, and the heating module 315 is a heating wire. The controller 700 continues to receive the oil temperature signal from the temperature detection module 314 when it receives an oil level signal indicating that the oil temperature is less than a predetermined temperature. If the oil temperature is lower than the preset temperature, the temperature detection module 314 sends a temperature signal indicating that the oil temperature is lower than the preset temperature to the controller 700, and at this time, the controller 700 controls the heating module 315 to start working; at this time, the temperature detection module 314 continuously detects the oil temperature, and after the heater operates for a period of time, if the controller 700 receives a temperature signal indicating that the oil temperature sent by the temperature detection module 314 is higher than a preset temperature, the controller controls the heating module 315 to stop operating and controls the second electromagnetic valve to open, at this time, the oil is heated to the preset temperature, does not solidify, and can flow out of the oil outlet 311. In the embodiment of the present invention, the preset temperature may be set to 20 ℃, and at 20 ℃ and above, the oil has better fluidity and can be discharged from the oil outlet 311.

s401, receiving a second signal sent by the second water detection module 331;

s402, controlling the motor to be started when the second signal is characterized by water;

and when the second signal is characterized as no water, controlling the motor to stop working.

In the embodiment of the present invention, the second water detection module 331 is configured to detect whether water flows out of the water outlet 330. Because a part of water is placed in the oil-water separation bin during the testing stage of the restaurant wastewater treatment equipment, and most of solid matters are filtered from the restaurant wastewater when the restaurant wastewater passes through the basket device 100 and enter the restaurant wastewater in the solid-liquid separation bin 200, the amount of the solid matters is small. Therefore, the screw conveyor 222 does not always work. In this state, when water flows out of the water outlet 330, that is, a kitchen sewer pipe representing a home or a restaurant enterprise discharges restaurant wastewater to the restaurant wastewater treatment apparatus 1. In order to save energy consumption, instead of operating the motor 2222 of the screw conveyor 222 all the time, the second water detection module 331 may be used to detect whether water flows through the water outlet 330, and if the second water detection module 331 detects that water flows through the water outlet 330, the controller controls the motor 2222 to operate.

In the embodiment of the present invention, the second water detecting module 331 is a water sensor, and the water sensor is based on the liquid conduction principle, and detects whether water exists by using an electrode, and then converts the water into dry contact point output by using the sensor, so that whether water flows out from the water outlet 330 can be detected. Of course, it is possible that only very little waste water flows out of the outer water outlet 330, or that a small amount of waste water remains at the outer water outlet 330, when it is not necessary to stop the suction pump. In order to reduce the equipment and energy loss caused by frequent switching of the water pump, the first water detection module can be set to determine which signal to send according to the detected water quantity. If the amount of water entering the primary inlet is less than a predetermined water amount value (which may be a small value such as 5ml or 10ml, etc.), a signal indicative of no water may still be sent to controller 700.

In the restaurant wastewater treatment equipment 1, the controller 700 is connected with a remote server through a wireless data transceiver unit;

fault detection units are respectively arranged on the water suction pump 360, the lifting water pump, the first water detection module 224, the second water detection module 331, the temperature detection module 314, the motor 2222 of the screw conveyor, the first electromagnetic valve 414 and the second electromagnetic valve; a fault sequencing library is arranged in the controller 700, and the fault sequencing library is used for storing the priority sequence corresponding to each fault module;

the method further comprises the steps of:

s501, receiving a fault signal sent by the fault detection unit, wherein the content of the fault signal comprises a fault module name, a fault module position and a fault reason;

s502, searching a priority sequence corresponding to the fault module in a fault sequencing library;

s503, sending the fault signal and the corresponding priority order to the remote server.

Because more electronic components are used in the control method, some devices can not be used if the electronic components break down in the working process of the restaurant wastewater treatment equipment, and even the whole restaurant wastewater treatment equipment can be out of order. Therefore, fault detection units are respectively arranged on the water pump 360, the lift pump, the first water detection module 224, the second water detection module 331, the temperature detection module 314, the motor of the screw conveyor, the first electromagnetic valve 414 and the second electromagnetic valve; also, a fault sequencing library is provided within the controller 700.

Specifically, when the first water detection module 224, the second water detection module 331, the temperature detection module 314, the first solenoid valve 414 and the second solenoid valve have a fault, the fault detection unit disposed thereon sends a fault signal to the controller 700, and the content of the fault signal includes a name of the fault module, a position of the fault module and a fault reason.

After receiving the fault signal, the controller 700 searches the priority order corresponding to the fault module in the fault sequencing library according to the fault module name in the fault signal. Specifically, in the fault sequencing library, the fault signals of the lift water pump, the motor of the screw conveyor, the first water detection module 224 and the second water detection module 331 are set to a first priority; setting the fault signals of the heater, the first solenoid valve 414 and the second solenoid valve to a second priority; the fault signals of the water pump 360 and the temperature detection module 314 are set to a third priority.

When the priority order of each fault signal is determined, the controller 700 transmits the fault signal and the corresponding priority order to the remote server.

The remote server is also connected with a client, and can send the contents to the client when receiving each fault signal and the corresponding priority order. The client can be computer equipment, mobile phone equipment or the like.

When multiple restaurant wastewater treatment facilities are involved in different locations, the fault signal content may also include the identification and geographic location of each participating wastewater treatment facility.

In conclusion, when the electronic element fails, the restaurant wastewater treatment equipment can automatically report the failure information, so that the client can clearly know which element of which equipment at which position has failed, and maintenance personnel can conveniently and timely maintain the restaurant wastewater treatment equipment. And, the maintenance personnel can determine the maintenance order according to the priority order and the geographic position. If the fault signal is of the first priority, the maintenance personnel can be prompted to process within 1 day at the client; when the fault signal is of the second priority, the client can prompt maintenance personnel to process within 3 days; when the fault signal is of a third priority, the service personnel may be prompted at the client that the service personnel needs to process within 7 days. The specific time can be determined according to actual conditions. Thus, the equipment maintenance efficiency is improved.

In another embodiment of the present invention, a restaurant wastewater treatment system is disclosed, which comprises the restaurant wastewater treatment equipment, and further comprises a remote server, wherein the remote server is connected with the controller 700 through a wireless data transceiver unit.

The first water detection module 224, the second water detection module 331, the temperature detection module 314, the first electromagnetic valve 414 and the second electromagnetic valve are respectively provided with a fault detection unit; a fault sequencing library is arranged in the controller 700, and the fault sequencing library is used for storing the priority sequence corresponding to each fault module; when the controller 700 receives the fault signal sent by the fault detection unit, the priority order corresponding to the fault module in the fault sequencing library is searched, and the content of the fault signal includes the name of the fault module, the position of the fault module and the fault reason; when the controller 700 finds the priority order corresponding to the failed module, it sends the failure signal and the corresponding priority order to the remote server.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

Of course, the restaurant wastewater treatment equipment disclosed by the embodiment of the invention can be used for treating restaurant wastewater, and can be applied to wastewater treatment equipment for restaurant wastewater treatment when solid-liquid separation, oil-water separation, water purification, circulating filtration and other treatment processes are required for wastewater or sewage and the like under other conditions.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. A restaurant wastewater treatment equipment is characterized by comprising:

the oil-water separation bin is used for separating oil and wastewater;

the circulating filter device comprises a filter container and a filter bin arranged in the filter container; the filtering container comprises a filtering water inlet, a water return port and a slag discharge port, the filtering water inlet is arranged at the upstream of the filtering bin and is communicated with a water suction pump arranged on the side wall of the oil-water separation bin through a water pipe, and the other end of the water suction pump is connected with a slag suction device arranged at the bottom of the oil-water separation bin through a water pipe; the water return port is arranged at the downstream of the filtering bin and is communicated with the oil-water separation bin, and the slag discharge port is arranged at the bottom of the filtering container and is connected with the filtering bin;

the controller is electrically connected with the first water detection module and the water pump respectively;

when the controller receives a signal which is sent by the first water detection module and represents that water is not available, the water suction pump is controlled to be started so as to pump a solid-liquid mixture in the oil-water separation bin into the circulating filter device;

when the controller receives a signal which is sent by the first water detection module and represents water inflow, the controller controls the water suction pump to stop working;

the water in the oil-water separation storehouse is gone into a water purification installation through going out mouth of a river and water pipe drainage, water purification installation includes: purifying container, setting are in purifying container upper portion purification water inlet, setting are in the outlet and the setting of purifying container lower part are in the multilayer that the inside top-down of purifying container arranged purifies the subassembly, and every layer of purification subassembly all includes a plurality of purifiers that parallel arrangement each other, the vertical setting of clarifier is in purifying container, every purifier upper portion all set up with the water inlet that purifies the water inlet intercommunication, the lower part sets up a plurality of filtration holes, all set up purification material in the clarifier, the equal corresponding setting from top to bottom of clarifier in the adjacent two-layer purification subassembly.

2. Restaurant wastewater treatment equipment according to claim 1,

the side wall of the filtering bin is provided with a plurality of filtering holes, a solid-liquid mixture from the oil-water separation bin enters the filtering bin from the filtering water inlet, and liquid in the solid-liquid mixture passes through the filtering holes and is discharged back to the oil-water separation bin from the water return port; the solid in the solid-liquid mixture is discharged to the slag discharging port through the filtering bin; the slag discharging port is provided with a valve, and when the valve is opened, the solid is discharged through the slag discharging port.

3. The restaurant wastewater treatment equipment according to claim 2, wherein the valve is configured as a first electromagnetic valve, and the controller is electrically connected with the first electromagnetic valve;

the controller controls the first electromagnetic valve to be opened or closed according to a preset slag discharge period.

4. Restaurant wastewater treatment equipment according to claim 3,

the upper part of the oil-water separation bin is also provided with an oil outlet, a second electromagnetic valve for controlling the opening and closing of the oil outlet and an oil level detection module for detecting the oil level in the oil-water separation bin, and the controller is electrically connected with the second electromagnetic valve and the oil level detection module respectively;

the controller controls the second electromagnetic valve to be opened when receiving a signal which is sent by the oil level detection module and indicates that the oil level is higher than a preset height;

and when the controller receives a signal which is sent by the oil level detection module and indicates that the oil level is lower than the preset height, the controller controls the second electromagnetic valve to be closed.

5. Restaurant wastewater treatment equipment according to claim 4,

a temperature detection module and a heating module are further arranged at a position, close to the oil outlet, in the oil-water separation bin; the controller is electrically connected with the temperature detection module and the heating module respectively;

the controller controls the heater to start working when receiving a signal that the representation oil level sent by the oil level detection module is higher than a preset height and a signal that the representation temperature sent by the temperature detection module is lower than a preset temperature;

and when the controller receives a signal that the representation oil level sent by the oil level detection module is higher than the preset height and a signal that the representation temperature sent by the temperature detection module is higher than the preset temperature, the controller controls the heater to stop working and controls the second electromagnetic valve to be opened.

6. A restaurant wastewater treatment system comprising the restaurant wastewater treatment equipment as claimed in any one of claims 1-5, wherein the restaurant wastewater treatment system further comprises a remote server, the remote server is connected with the controller through a wireless data transceiver unit;

fault detection units are respectively arranged on the water suction pump, the first water detection module, the temperature detection module, the heater, the first electromagnetic valve and the second electromagnetic valve; a fault sequencing library is arranged in the controller and used for storing the priority sequence corresponding to each fault module;

when the controller receives a fault signal sent by the fault detection unit, the controller searches a priority sequence corresponding to the fault module in the fault sequencing library, wherein the content of the fault signal comprises a fault module name, a fault module position and a fault reason;

and when the controller finds the priority sequence corresponding to the fault module, the controller sends the fault signal and the corresponding priority sequence to the remote server.

7. A control method of restaurant wastewater treatment equipment, which is characterized in that,

the catering wastewater treatment equipment comprises an oil-water separation bin and a circulating filter device, wherein the circulating filter device comprises a filter container and a filter bin arranged in the filter container; the filter container comprises a water inlet, a water return port and a slag discharge port, the water inlet is arranged at the upstream of the filter bin and is communicated with a water suction pump arranged at the bottom of the oil-water separation bin through a water pipe, the water return port is arranged at the downstream of the filter bin and is communicated with the oil-water separation bin, and the slag discharge port is arranged at the bottom of the filter container and is connected with the filter bin; the restaurant wastewater treatment equipment is also provided with a first water inlet for receiving restaurant wastewater and a first water detection module, and the first water detection module is used for detecting whether water flows through the first water inlet; the controller is electrically connected with the first water detection module and the water pump respectively; the restaurant wastewater treatment equipment further comprises a water purification device, and the water purification device comprises: the purifying device comprises a purifying container, a purifying water inlet arranged at the upper part of the purifying container, a water outlet arranged at the lower part of the purifying container and a plurality of layers of purifying components arranged from top to bottom and arranged in the purifying container, wherein each layer of purifying component comprises a plurality of purifiers arranged in parallel, the purifiers are vertically arranged in the purifying container, the upper part of each purifier is provided with a water inlet communicated with the purifying water inlet, the lower part of each purifier is provided with a plurality of filtering holes, purifying materials are arranged in the purifiers, and the purifiers in the purifying components of two adjacent layers are arranged up and down correspondingly;

the control method comprises the following steps:

receiving a signal detected by the first water detection module;

when the signal is characterized as being anhydrous, controlling the water suction pump to be started so as to pump water and sludge in the oil-water separation bin into the circulating filter device;

and when the signal is characterized as water inflow, controlling the water suction pump to stop working.

8. The control method according to claim 7,

the valve is configured as a first electromagnetic valve, and the controller is electrically connected with the first electromagnetic valve;

the control method further comprises the following steps:

detecting whether the slag is in a preset slag discharge period;

when the slag discharge cycle is in, controlling the first electromagnetic valve to be opened;

when the slag discharge cycle is not in the slag discharge cycle, controlling the first electromagnetic valve to close;

wherein, the slag discharge period is a preset time period.

9. The control method according to claim 8,

the control method further comprises the following steps:

receiving an oil level signal sent by the oil level detection module;

when the oil level signal is characterized that the oil level is higher than a preset height, controlling the second electromagnetic valve to be opened;

and when the oil level signal is characterized in that the oil level is lower than a preset height, controlling the second electromagnetic valve to be closed.

10. The control method according to claim 9,

a temperature detection module and a heating module are arranged at a position, close to the oil outlet, in the oil-water separation bin; the controller is electrically connected with the temperature detection module and the heating module respectively;

the control method comprises the following steps:

after receiving the signal that the representation oil level sent by the oil level detection module is higher than the preset height, the method further comprises the following steps:

receiving a temperature signal sent by the temperature detection module;

when the temperature signal is characterized in that the oil temperature is lower than a preset temperature, controlling the heater to start working;

and when the temperature signal represents that the oil temperature is higher than the preset temperature, controlling the heater to stop working and controlling the second electromagnetic valve to be opened.

11. The control method according to claim 10, wherein the controller is connected to a remote server through a wireless data transceiving unit;

fault detection units are respectively arranged on the first water detection module, the temperature detection module, the first electromagnetic valve and the second electromagnetic valve; a fault sequencing library is arranged in the controller and used for storing the priority sequence corresponding to each fault module;

the method comprises the following steps:

receiving a fault signal sent by the fault detection unit, wherein the content of the fault signal comprises a fault module name, a fault module position and a fault reason;

searching a priority order corresponding to the fault module in a fault sequencing library;

and sending the fault signal and the corresponding priority order to the remote server.