CN114768382B

CN114768382B - Factory wastewater recycling system of ready-mixed concrete mixing station and operation method

Info

Publication number: CN114768382B
Application number: CN202210437301.5A
Authority: CN
Inventors: 黄波; 杨玉根; 刘杰; 孙福永
Original assignee: Meishan Chengtou Building Materials Co ltd
Current assignee: Meishan Chengtou Building Materials Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2024-01-02
Anticipated expiration: 2042-04-21
Also published as: CN114768382A

Abstract

The invention relates to a factory wastewater recycling system of a ready-mixed concrete mixing station, which comprises the following components: the system comprises a vehicle cleaning system, a waste wet concrete recovery system, a multi-stage sedimentation tank system and a factory rain sewage recovery system. The beneficial effects of the invention are as follows: the invention has the advantages that the dirt interception grid is arranged in the flushing drainage ditch to intercept dirt of the flushing wastewater of the vehicle, and the dirt interception grid support frame is used for enhancing the overall stability of the dirt interception grid; the sedimentation tank is provided with the covering device, so that the sedimentation tank can freely slide on the sedimentation tank, the sealing and the opening of the sedimentation tank are easily realized, and the pollution of sundries such as air garbage, dust, leaves and the like in the sewage sedimentation process is avoided; according to the bottom surface flushing device and the side surface flushing device, all bottom surface spray heads can flush the bottom of the concrete transport vehicle, the vehicle can be flushed in all directions, and the side surface baffle plates reduce waste water splashing in the flushing process.

Description

Factory wastewater recycling system of ready-mixed concrete mixing station and operation method

Technical Field

The invention belongs to the technical field of concrete mixing transportation, and particularly relates to a plant waste water recycling system of a ready-mixed concrete mixing station and an operation method.

Background

The commercial concrete mixing plant inevitably generates a large amount of wastewater in the production and operation process, and if the wastewater is directly discharged, the wastewater contains conventional building materials such as sand stone, cement and the like, so that the natural environment is seriously polluted, a large amount of resources are wasted, and although part of the commercial concrete production plant is recycled, the whole recycling effect is not optimistic, and the problems are mainly:

(1) The harmful residues of waste water, garbage and other impurities after the vehicle is cleaned exceed the standard, the sewage purification degree is not high, the content of tiny particles in the water is more, floccules which are invisible to naked eyes in the water cannot be eradicated only by a precipitation mode, and the purified water quality is difficult to meet the production requirement.

(2) The vehicle bottom is not fully washed, a certain flushing blind area exists, and in the flushing process, waste water splashes, and the vehicle wets out of a factory area, so that normal operation of the field area is affected.

(3) The water collecting container is not provided with a filtering and dredging device, so that more sundries are contained in the water collecting container, a sedimentation water tank is lack of a cover plate which is convenient and flexible to open and close, garbage, dust and leaves in the air easily fall into the water tank, and the quality of purified water is seriously affected.

(4) Only the waste water generated in production and vehicle washing is recovered, the waste water and rainwater on the ground of a factory are not recovered, the design of drainage facilities is unreasonable, and a large amount of accumulated water can not be effectively collected when the water is in heavy rain.

(5) After filtering out the grit, the waste water screening machine needs the manual work to sweep out the grit unification, cleans the clearance difficulty, and screening technology complicacy, sand, stone reuse rate low grade problem.

Aiming at the problems, the invention is urgent to provide a simple and effective plant waste water recycling system of a ready mixed concrete mixing station and an operation method thereof, which can improve the recycling rate of the rain water and the sewage, improve the cleaning efficiency of vehicles, reduce the influence on the plant and the road surface and save water.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a plant waste water recycling system of a ready-mixed concrete mixing station and an operation method.

The system for recycling the factory wastewater of the ready-mixed concrete mixing station comprises: the system comprises a vehicle cleaning system, a waste wet concrete recovery system, a multi-stage sedimentation tank system and a factory rain sewage recovery system; the vehicle cleaning system consists of a drainage ditch dirt interception device, a bottom surface flushing device, a side blowing device, an operation induction collecting device and a water supply device; the waste wet concrete recovery system comprises a sand filtering device, a sand sliding device and a sand screening device; the multistage sedimentation tank system consists of a sand setting device, a multistage sedimentation tank, a filtering device, a clear water storage device and a sedimentation tank covering device;

The sewage interception device of the drainage ditch consists of a flushing drainage ditch, an interception grating, a limiting clamping block, an interception grating support frame, a sewage surface height line and a garbage protection net; a plurality of limiting clamping blocks are arranged at the bottom of the flushing drainage ditch at equal intervals, and dirt-intercepting grids are arranged in the limiting clamping blocks; a sewage interception grid support frame is arranged between adjacent sewage interception grids, and a layer of garbage protection net is paved on the top of each sewage interception grid; a sewage surface height line is arranged at a distance lower than the top of the sewage interception grid;

the bottom surface flushing device consists of a bottom surface transverse flushing device and a bottom surface longitudinal flushing device; the bottom surface transverse flushing device consists of a flushing drainage ditch, a bottom surface transverse water inlet pipe, a bottom surface spray head, a water pipe support frame and a garbage protection net; the bottom surface longitudinal flushing device consists of a bottom surface spray head, a bottom surface longitudinal water inlet pipe, a precast concrete protective cover, a water pipe support frame, lifting lugs, a longitudinal pit slot and a branch water inlet pipe;

the side flushing device consists of a side water inlet pipe, a side spray head, a side baffle, a water pipe support frame and a branch water inlet pipe, wherein the side water inlet pipe is connected with the branch water inlet pipe; the side water inlet pipe is supported on the ground by the water pipe support frame, a plurality of side spray heads are arranged on the side water inlet pipe at equal intervals, and a side baffle is arranged on the outer side of the side water inlet pipe;

The operation induction assembly device comprises a square steel pipe vertical rod, a fixing plate, an operation box and an inductor; square steel pipe vertical rods are arranged in the gap between the two air blowing devices, and are fixed on the ground; the top of the square steel pipe vertical rod is provided with a fixing plate, and the fixing plate is provided with an operation box and an inductor;

the filtering device in the multistage sedimentation tank system comprises a filtering device water outlet, fine water permeable cloth, a reinforcement cage, a steel wire safety net and broken stones; the filtering device is arranged at the tank wall in the filtering tank.

Preferably, the sand filtering device, the sand sliding device and the sand screening device in the waste wet concrete recycling system are as follows:

the sand filtering device consists of a flushing drainage ditch, a stainless steel filtering tank, a sand filtering screen, a primary drainage pipe, the inner wall of the filtering tank, a connecting shaft and a binding wire; the stainless steel filtering tank is connected with the flushing drainage ditch; the sand filter screen is arranged in the stainless steel filter tank; the first-stage drain pipe is connected with a drain outlet of the stainless steel filter tank; the sand filter screen consists of two blocks, and the two blocks of the sand filter screen are bound together by binding wires; the end part of each sand filter screen block is provided with a connecting shaft which is fixed on the inner wall of the filter tank; the sand filter screen is rotationally connected with the connecting shaft; when the binding wires are not bound with the two blocks of the sand filter screen, the two blocks of the sand filter screen are rotationally connected with the sand slide groove;

The sand sliding device comprises a stainless steel filtering tank, a sand sliding groove, a groove end baffle, supporting legs and a feeding hopper; one end of the sand sliding groove is arranged in the stainless steel filtering tank; an end baffle is arranged at one port of the sand sliding groove, and the other port of the sand sliding groove is connected with a feed hopper; the bottom of the sand sliding groove is provided with supporting legs, and the sand sliding groove is inclined at a certain angle; one end of the sand sliding groove is positioned in the stainless steel filter tank, and the other end of the sand sliding groove is positioned in the feed hopper;

the sand and stone screening device comprises a sand and stone separator, a sand sliding groove, a broken stone sliding groove, a sand collecting box, a broken stone collecting box, a feed hopper and a steel supporting platform; the sand-stone separator is fixed on the steel supporting platform, and a feed hopper is arranged at the upper part of the sand-stone separator; the lower part of the sand-stone separator is respectively provided with a sand sliding groove and a broken stone sliding groove; the sand sliding groove and the broken stone sliding groove are respectively connected with the sand collecting box and the broken stone collecting box.

Preferably, in the multistage sedimentation tank system, the sand setting device, the multistage sedimentation tank, the filtering device, the clear water storage device and the sedimentation tank covering device are specifically as follows:

the sand setting device comprises a primary drain pipe, a sand setting tank, a fine sand filtering device and a secondary drain pipe; the fine sand filtering device consists of a handle, an inner wall of the filtering device, a top plate of the filtering device and a filter screen; the inner wall of the filter device and the top plate of the filter device are assembled into a whole through welding; the handle is welded on the top plate of the filtering device, and the filter screen is welded at the bottom of the inner wall of the filtering device; the fine sand filtering device is placed in the grit chamber, and the top plate of the filtering device is placed on the wall of the grit chamber;

The multistage sedimentation tank comprises a second-stage drain pipe, a sedimentation tank wall, a first-stage sedimentation tank, a ditch, a second-stage sedimentation tank, a filter device and a third-stage sedimentation tank; the second-level drain pipe is connected with the first-level sedimentation tank; a ditch is arranged at the top of the wall between the first-stage sedimentation tank and the second-stage sedimentation tank; a ditch is also arranged at the top of the tank wall between the secondary sedimentation tank and the filter tank; a filtering device is arranged between the filtering tank and the three-stage sedimentation tank;

the framework of the filtering device is formed by binding a steel wire safety net by a steel reinforcement cage; the cavity surrounded by the steel wire safety net is filled with broken stone, and the outside of the steel reinforcement cage is wrapped with fine water permeable cloth; a water outlet of the filtering device is arranged at the filtering device; the water outlet of the filtering device is connected with a three-stage sedimentation tank;

the clear water storage device comprises a main water inlet pipe, a clear water tank, a sewage pump and a water supplementing pipe; the third-stage sedimentation tank is connected with a clean water tank; a sewage pump is arranged in the clean water tank; one end of the sewage pump is connected with a sewage port on the clean water tank, the other end of the sewage pump is connected with a main water inlet pipe, and the main water inlet pipe extends to the position of the flushing vehicle; a water supplementing pipe is arranged in the clean water tank;

the sedimentation tank covering device comprises a sedimentation tank wall, a sliding rail, a rotary folding steel cover plate, a left cover plate, a right cover plate, a rotary connecting shaft and a sliding wheel; a sliding rail is arranged on the wall of the sedimentation tank; the rotary folding steel cover plate is formed by rotationally connecting a left cover plate and a right cover plate through a rotary connecting shaft; the folding steel cover plate is connected with the sliding rail in a sliding way; a plurality of sliding wheels are arranged on the left cover plate and the right cover plate, and the sliding wheels are matched with the sliding rails; the sliding wheel is connected with the sliding rail in a sliding way.

As preferable:

the plant area rain sewage recovery system comprises a flushing drainage ditch, a sewage interception grating, a soil ramming, a garbage protection net, a field ground, a drainage type curb filter tank, a rainwater drainage ditch, an easily-cleaned rainwater well, a filter tank high wall, a filter tank low wall, a high wall drainage hole, a low wall drainage hole, a filter tank, an L-shaped curb filter tank cover plate, a hook and a silt filter screen;

the drainage type curb filter tank is arranged around the ground of the field and consists of a filter tank high wall, a filter tank low wall, a high wall drain hole, a low wall drain hole, a filter tank and an L-shaped curb filter tank cover plate; high-wall drain holes are uniformly formed in the high wall of the filter tank; low-wall drain holes are uniformly formed in the low walls of the filter tank; tamping the outer side of the high wall of the filter tank with plain soil; pouring field ground on the inner side of the short wall of the filter tank; the L-shaped curb filter tank cover plate covers the drainage type curb filter tank;

the method comprises the steps that sewage-cleaning-easy rainwater wells are arranged at four corners of a factory, rainwater drainage ditches are arranged between the sewage-cleaning-easy rainwater wells and drainage type curb filter tanks, the drainage type curb filter tanks are placed on the rainwater drainage ditches, and the size of the rainwater drainage ditches is larger than that of the drainage type curb filter tanks; the flushing drainage ditch is connected with the rainwater drainage ditch; a sludge filter screen is arranged in the rainwater well easy to clean; the rainwater drainage ditch is embedded into the rainwater well easy to clean; three hooks are arranged on the sludge filter screen and are hooked on the top of the rainwater well easy to clean;

The ground of the field area is an splayed slope surface, and the flushing drainage ditch is taken as a central line and is inclined to two sides; a dirt interception grid is arranged in the flushing drainage ditch, and a garbage protection net is paved at the top of the flushing drainage ditch.

Preferably, the vehicle cleaning system inner bottom surface flushing device, the side blowing device and the water supply device are specifically:

in the bottom flushing device, a bottom transverse water inlet pipe is positioned at the top of the garbage protection net, the bottom transverse water inlet pipe is supported in a flushing drainage ditch by a water pipe support frame, and a plurality of bottom spray heads are arranged on the bottom transverse water inlet pipe at uniform intervals; the longitudinal pit is vertical to the flushing drainage ditch, and two longitudinal water inlet pipes with bottom surfaces are arranged in the longitudinal pit; the bottom longitudinal water inlet pipe is supported in the longitudinal pit through the water pipe support frame, a plurality of bottom spray heads are also arranged on the bottom longitudinal water inlet pipe at uniform intervals, and the bottom longitudinal water inlet pipe is connected with the support water inlet pipe; the top of the longitudinal pit slot is provided with a precast concrete protective cover, and the central position of the precast concrete protective cover is provided with a lifting lug;

the side blowing device consists of a side water inlet pipe, a blowing device, a side baffle, a concrete foundation, a round steel pipe and an electric wire; the concrete foundation is arranged on the inner side of the side baffle; a circular steel tube is arranged in a slit between the side water inlet pipe and the side baffle, and the circular steel tube is arranged on a concrete foundation; the electric wire penetrates through the round steel tube; the air blowing device is arranged at the top of the round steel pipe and is connected with the electric wire;

The water supply device consists of a bottom surface transverse water inlet pipe, a bottom surface spray head, a bottom surface longitudinal water inlet pipe, a side spray head, a branch water inlet pipe, a main water inlet pipe, a clean water tank and a sewage pump; the clean water tank is connected with a sewage pump, the sewage pump is connected with a main water inlet pipe, and the main water inlet pipe is connected with a branch water inlet pipe and a bottom surface transverse water inlet pipe; the branch water inlet pipe is connected with the bottom longitudinal water inlet pipe and the side water inlet pipe; the bottom longitudinal water inlet pipe is connected with the bottom spray head, and the lateral water inlet pipe is connected with the lateral spray head; the side water inlet pipe is provided with two rows of water inlet pipes up and down.

Preferably, the inner wall of the filter tank, the inner wall of the filter device and the top plate of the filter device are all stainless steel plate structures; the flushing drainage ditch and the sedimentation tank wall are both of precast concrete structures; the sand sliding groove and the support leg form an inclined angle of degrees; the inclination angle of the ground surface of the field area is 5 percent.

The working method of the station wastewater resource utilization system of the ready-mixed concrete mixing station comprises the following steps:

step 1, a vehicle is driven into a cleaning parking space;

step 2, a vehicle cleaning system performs vehicle cleaning and blow-drying: the sensor on the fixing plate at the inner side of the side baffle plate recognizes and senses the vehicle entering position, related information is transmitted to the operation box, and the operation box controls the opening of the water inlet pipe valve; the bottom surface spray head sprays water to wash the bottom of the vehicle, and the side surface spray head sprays water to wash the vehicle body; after the water spraying flushing is finished, the operation box controls the blowing device to blow, and the vehicle drives away from the cleaning parking space after blowing;

Step 3, draining water on the ground of the field area;

step 4, pumping and discharging sewage to a stainless steel filter tank in the waste wet concrete recovery system: the sewage filtered in the sewage well easy to clean is pumped to a stainless steel filtering tank through a sewage pump, and a large amount of sewage in a flushing drainage ditch of a vehicle cleaning system flows into the stainless steel filtering tank after being filtered layer by layer through a plurality of sewage interception grids; the sand and stone filtering device of the stainless steel filtering tank filters sewage, the filtered sewage flows into the grit chamber through the primary drain pipe, and sand and stone filtered by the sand and stone filter screen slide into the feed hopper through the sand and stone sliding groove; the filtered sand and stone slides into the sand and stone separator through the feed hopper;

step 5, sand and stone separation: starting a sand-stone separator to separate sand from stone, wherein the sand slides into a sand collecting box through a sand sliding groove, and the stone slides into a broken stone collecting box through a broken stone sliding groove; conveying sand and stones in the sand collecting box and the broken stone collecting box to a stock yard for stacking for recycling;

step 6, fine sand particle filtration: discharging sewage flowing out of the stainless steel filter tank to a sand setting tank, and filtering fine sand particles through a filter screen in the sand setting tank; the fine sand particles are reserved on the filter screen, and the sewage and wastewater after the fine sand particles are filtered is discharged into a primary sedimentation tank in a multi-stage sedimentation tank system for sedimentation through a secondary drain pipe and a canal;

Step 7, spreading a precipitation Chi Gang cover plate: a sliding rail is arranged on the wall of the sedimentation tank, a rotary folding steel cover plate is customized in a factory in advance according to the size of each level of sedimentation tank, the rotary folding steel cover plate is hung on the wall of the sedimentation tank, a sliding wheel of the rotary folding steel cover plate is embedded into the sliding rail, the rotary folding steel cover plate is rotated and unfolded, and the sedimentation tank is fully covered;

step 8, primary and secondary precipitation of sewage: the sewage flowing in from the secondary drainage pipe is subjected to primary sedimentation through a primary sedimentation tank; when the water in the primary sedimentation tank is full, the water enters the secondary sedimentation tank through the water channel to carry out secondary sedimentation; when the secondary sedimentation tank is full of water, the water enters the filter tank through the water channel;

step 9, filtering in a filter tank;

and 10, storing water in a clean water tank.

Preferably, the step 1 specifically comprises: the sewage pump conveys clear water in the clear water tank to the bottom transverse water inlet pipe, the bottom longitudinal water inlet pipe and the side water inlet pipe through the main water inlet pipe; hanging the precast concrete protective cover at the top of the longitudinal pit; a transport vehicle and a concrete tank truck in the car washing station enter a cleaning parking space from an entrance of the car washing station; the method comprises the following steps: when the vehicle cleaning system is used for carrying out water spray cleaning or heavy rain on a vehicle, rainwater on the outer side of the high wall of the filter tank enters the filter tank through the high wall drain hole, and rainwater on the ground of a field area and cleaning sewage water enter the filter tank through the low wall drain hole; a large amount of sewage in the ground of the field area flows to the drainage type curb filter tank and finally converges to the easily-cleaned rainwater well, and the easily-cleaned rainwater well is provided with a silt filter screen for carrying out preliminary filtration on the rainwater garbage and the leaves.

Preferably, the step 9 specifically comprises: after the sewage enters the filtering tank, the invisible particles and floccules of the sewage are filtered by the filtering device, and the filtered sewage flows to the three-stage sedimentation tank through the water outlet of the filtering device for final sedimentation.

Preferably, the step 10 specifically comprises: after the three-stage sedimentation tank is full, the water flows into a clean water tank for storage, so that the production and cleaning machinery can be reused; a sewage pump is arranged in the clean water tank, the sewage pump conveys clean water in the clean water tank to a production and flushing vehicle through a main water inlet pipe for water use, a water supplementing pipe is arranged in the clean water tank, and when the water quantity in the clean water tank is insufficient, water is supplemented into the clean water tank through the water supplementing pipe.

The beneficial effects of the invention are as follows:

(1) The invention has the advantages that the dirt interception grid is arranged in the flushing drainage ditch to intercept dirt of the flushing wastewater of the vehicle, and the dirt interception grid support frame is used for enhancing the overall stability of the dirt interception grid; the sedimentation tank is provided with the covering device, can freely slide on the sedimentation tank, can easily realize the sealing and opening of the sedimentation tank, and avoids the pollution of sundries such as air garbage, dust, leaves and the like in the sewage sedimentation process.

(2) According to the bottom surface flushing device and the side surface flushing device, all bottom surface spray heads can flush the bottom of the concrete transport vehicle, the vehicle can be flushed in all directions, and the side surface baffle plate reduces waste water splashing in the flushing process; meanwhile, an operation box is arranged for controlling the spray water quantity of a spray head of the whole vehicle cleaning system and the air quantity of the air blowing device, and an inductor is arranged for sensing whether the concrete transport vehicle reaches a specified position or not and indicating the vehicle cleaning and air blowing device to start working; the induction collecting device can be operated to timely open and close the flushing and blowing, the water quantity and the air quantity are regulated, the mechanization degree is high, and the waste of water resources is reduced.

(3) According to the invention, the sand setting device is adopted for filtering fine sand particles, and the filtering device is arranged in the filtering tank for filtering out invisible particles and floccules, so that the water purifying degree is high, the production requirement is met, and the economic and technical benefits are better.

(4) The invention precisely separates sand and stone in the wastewater, realizes recycling, has less sand and stone omission, has high sand and stone collection rate, can reach more than 90 percent, greatly saves materials and realizes recycling of waste concrete.

(5) The plant rain sewage recovery system not only recovers the sewage and wastewater of the vehicle flushing in the ready-mixed concrete plant, but also recovers the wastewater and rainwater on the ground of the plant, thereby realizing the comprehensive utilization of the resources such as sand, stone, water and the like; the invention is mainly suitable for cleaning waste water of engineering machinery vehicles such as concrete mixing transport vehicles, trucks, stone loading forklift trucks, sand forklift trucks and the like in a factory of a ready-mixed concrete mixing station, and is used for recycling and reusing production and management waste water, regional rain and waste water.

Drawings

FIG. 1 is a plan view of the whole plant area wastewater recycling system of the ready mixed concrete mixing station;

FIG. 2 is an overall plan view of the ready mixed concrete factory vehicle cleaning system of the present invention;

FIG. 3 is a front cross-sectional view (direction A-A in FIG. 2) of a ready mix factory vehicle cleaning system according to the present invention;

FIG. 4 is a side cross-sectional view (in the direction B-B in FIG. 2) of the ready-mix concrete factory vehicle cleaning system of the present invention;

FIG. 5 is a longitudinal cross-sectional view (direction C-C in FIG. 2) of a precast concrete cap disposed in a longitudinal pit of a vehicle cleaning system of a ready-mix concrete plant according to the present invention;

FIG. 6 is a schematic diagram of the water supply circuit of the water supply device of the vehicle cleaning system in the ready-mixed concrete factory;

FIG. 7 is an overall plan view of the waste wet concrete recovery system of the present invention;

FIG. 8 is a block diagram of the sand filter unit of the wet waste concrete recycling system of the present invention;

FIG. 9 is a diagram showing the construction of the sand filter screen of the wet waste concrete recycling system of the present invention;

FIG. 10 is a diagram showing the sand filter screen separation rotation of the wet waste concrete recycling system of the present invention;

FIG. 11 is a block diagram of the overall sand screening device of the wet waste concrete recycling system of the present invention;

FIG. 12 is an overall plan view of the multi-stage sedimentation tank system of the present invention;

FIG. 13 is a block diagram of a multi-stage sedimentation tank system of the present invention;

FIG. 14 is a block diagram of a sand setting device of the multistage sedimentation tank system of the present invention;

FIG. 15 is a block diagram of a fine grit filter device of the multistage sedimentation tank system of the present invention;

FIG. 16 is a block diagram of a filtration device of the multistage sedimentation tank system of the present invention;

FIG. 17 is a block diagram of a sedimentation tank wall arrangement slide rail of the multi-stage sedimentation tank system of the present invention;

FIG. 18 is a schematic view of a rotary folding steel deck covered sedimentation tank of the multi-stage sedimentation tank system of the present invention;

FIG. 19 is a schematic view of the unfolded structure of the rotary folding steel cover plate of the multi-stage sedimentation tank system of the present invention;

FIG. 20 is an overall plan view of the plant area rain water recovery system of the present invention;

FIG. 21 is a cross-sectional view of the novel drainage kerb filter tank of the present invention connected to the ground in the field (section D-D in FIG. 20);

FIG. 22 is a diagram showing the connection structure of the novel drainage type kerbstone filter tank and the easily-cleaned rainwater well;

FIG. 23 is a block diagram of a novel sludge screen of the present invention;

FIG. 24 is a view showing the construction of the connection between the wash drain and the rain drain according to the present invention (section E-E in FIG. 20);

FIG. 25 is a cross-sectional view of the ground of the field region of the present invention (section F-F in FIG. 20);

FIG. 26 is a flow chart of the system for recycling plant waste water in a ready mixed concrete mixing station according to the present invention.

Reference numerals illustrate: 1-a vehicle cleaning system; 2-a waste wet concrete recovery system; 3-a multistage sedimentation tank system; 4-a factory rain sewage recovery system; 5-flushing the drainage ditch; 6, a sewage interception grid; 7-a bottom surface transverse water inlet pipe; 8-a bottom surface spray head; 9-a bottom longitudinal water inlet pipe; 10-a precast concrete protective cover; 11-side inlet pipe; 12-side spray head; 13-a blowing device; 14-side baffles; 15-ramming plain soil; 16-limiting clamping blocks; 17-a water pipe support frame; 18-a dirt interception grid support frame; 19-sewage surface height line; 20-a garbage protection net; 21-square steel pipe vertical rods; 22-a fixing plate; 23-concrete foundation; 24-circular steel pipes; 25-wires; 26-an operation box; a 27-inductor; 28-lifting lugs; 29-longitudinal pits; 30-branch water inlet pipe; 31-a main water inlet pipe; 32-a clean water tank; 33-a sewage pump; 34-stainless steel filter tanks; 35-a sand filter screen; 36-primary drain pipe; 37-sand sliding groove; 38-sand and stone separator; 39-sand slide grooves; 40-stone breaking sliding grooves; 41-a sand collection box; 42-a crushed stone collecting box; 43-the inner wall of the filter tank; 44-connecting shaft; 45-binding wires; 46-slot end baffles; 47-feet; 48-feeding hopper; 49-steel support platform; 50-a sand setting tank; 51-a fine sand filtering device; 52-a secondary drain pipe; 53-sedimentation tank wall; 54-a primary sedimentation tank; 55-ditch; 56-a secondary sedimentation tank; 57-a filter tank; 58-a filtration device; 59-a three-stage sedimentation tank; 60-a water outlet of the filtering device; 61-water supplementing pipe; 62-lifting handles; 63-the inner wall of the filter device; 64-a filter top plate; 65-a filter screen; 66-fine water permeable cloth; 67-reinforcement cage; 68-a steel wire safety net; 69-lithotripsy; 70-sliding rails; 71-rotating a folding steel cover plate; 72-left cover plate; 73-right cover plate; 74-rotating the connecting shaft; 75-sliding wheels; 76—field floor; 77-drainage kerbstone filter tank; 78-rain gutters; 79-a rainwater well easy to clean; 80-the high wall of the filter tank; 81-short walls of the filter tank; 82-high wall drain holes; 83-low wall drain holes; 84-a filter tank; 85-L-shaped curb filter tank cover plates; 86-hooking; 87-a sludge filter screen.

Detailed Description

The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

As an embodiment, as shown in fig. 1 to 26, the plant waste water recycling system of the ready mixed concrete mixing station is composed of four parts, namely a vehicle cleaning system 1, a waste wet concrete recycling system 2, a multi-stage sedimentation tank system 3 and a plant rain sewage recycling system 4, wherein the vehicle cleaning system 1 cleans a transport vehicle and a concrete tank truck in a car washing field, cleaning waste water is discharged to the waste wet concrete recycling system 2 through a flushing drainage ditch 5, meanwhile, the plant rain sewage recycling system 4 collects rain sewage in the plant and pumps the rain sewage to the waste wet concrete recycling system 2, sand and stone in the waste water are filtered by the waste wet concrete recycling system 2, the sand and stone are separated by a sand and stone separator and sent to a raw material field for recycling, the filtered waste water is discharged into the multi-stage sedimentation tank system 3 for sedimentation, and the precipitated clean water is reused by production and cleaning machinery.

As shown in fig. 2, the factory vehicle cleaning system mainly comprises a drain sewage interception device, a bottom surface flushing device, a side blowing device, an operation induction collecting device, a water supply device and other structures.

As shown in fig. 2-3, the sewage interception device of the drainage ditch consists of a flushing drainage ditch 5, an interception grid 6, a limiting clamp block 16, an interception grid support frame 18, a sewage surface height line 19, a garbage protection net 20 and the like, wherein the flushing drainage ditch 5 is of a concrete structure, the limiting clamp blocks 16 are uniformly arranged at intervals at the bottom of the flushing drainage ditch 5, the interception grid 6 is placed in the limiting clamp block 16, the interception grid support frame 18 is arranged between the adjacent interception grids 6, the overall stability of the sewage interception grid is enhanced, a layer of garbage protection net 20 is paved at the top of the interception grid 6, and the sewage surface height line 19 is lower than the top of the interception grid 6 by a distance.

As shown in fig. 3 and 5, the bottom surface flushing device is composed of a bottom surface transverse flushing device and a bottom surface longitudinal flushing device, the bottom surface transverse flushing device is composed of a flushing drainage ditch 5, a bottom surface transverse water inlet pipe 7, bottom surface spray heads 8, a water pipe supporting frame 17, a garbage protecting net 20 and the like, the bottom surface transverse flushing device is supported in the flushing drainage ditch 5 by the bottom surface transverse water inlet pipe 7 through the water pipe supporting frame 17, the bottom surface transverse water inlet pipe 7 is located at the top of the garbage protecting net 20, and a plurality of bottom surface spray heads 8 are evenly arranged on the bottom surface transverse water inlet pipe 7 at intervals.

Further, the bottom surface longitudinal flushing device consists of a bottom surface spray head 8, a bottom surface longitudinal water inlet pipe 9, a precast concrete protective cover 10, a water pipe supporting frame 17, lifting lugs 28, longitudinal pit grooves 29, a branch water inlet pipe 30 and the like, wherein the bottom surface longitudinal flushing device is supported in the longitudinal pit grooves 29 by the bottom surface longitudinal water inlet pipe 9 through the water pipe supporting frame 17, the longitudinal pit grooves 29 are vertical to the flushing drainage ditch 5, two bottom surface longitudinal water inlet pipes 9 are arranged in the longitudinal pit grooves 29, a plurality of bottom surface spray heads 8 are uniformly arranged on the bottom surface longitudinal water inlet pipes 9 at intervals, and the bottom surface longitudinal water inlet pipes 9 are connected with the branch water inlet pipes 30; the top of the longitudinal pit 29 is provided with a precast concrete protective cover 10, the central position of the precast concrete protective cover 10 is provided with a lifting lug 28, and the precast concrete protective cover 10 can be lifted by the lifting lug 28; all bottom surface shower nozzles 8 can wash the concrete truck bottom.

As shown in fig. 2 and 4, the side flushing device comprises a side water inlet pipe 11, side nozzles 12, a side baffle 14, a water pipe supporting frame 17, a branch water inlet pipe 30 and the like, wherein the side water inlet pipe 11 is provided with two channels up and down, the side water inlet pipe 11 is supported on the ground by the water pipe supporting frame 17, a plurality of side nozzles 12 are uniformly arranged on the side water inlet pipe 11 at intervals, the side baffle 14 is arranged on the outer side of the side water inlet pipe 11, and the side baffle 14 is used for preventing sewage from splashing during flushing.

Further, the side air blower is composed of a side water inlet pipe 11, an air blower 13, a side baffle 14, a concrete foundation 23, a round steel pipe 24, an electric wire 25 and the like, wherein the concrete foundation 23 is arranged on the inner side of the side baffle 14, the round steel pipe 24 is arranged in a slit between the side water inlet pipe 11 and the side baffle 14, the round steel pipe 24 is arranged on the concrete foundation 23, the electric wire 25 penetrates through the round steel pipe 24, the air blower 13 is arranged on the top of the round steel pipe 24, and the air blower 13 is connected with the electric wire 25.

Further, the operation induction assembly device comprises a square steel pipe vertical rod 21, a fixing plate 22, an operation box 26, an inductor 27 and the like, the square steel pipe vertical rod 21 is installed in a gap between the two middle blowing devices 13, the square steel pipe vertical rod 21 is fixed on the ground, the fixing plate 22 is installed at the top of the square steel pipe vertical rod 21, the operation box 26 and the inductor 27 are installed on the fixing plate 22, the operation box 26 is used for controlling the spray head water spraying amount size of the whole vehicle cleaning system and the air quantity size of the blowing devices, and the inductor 27 is used for inducing whether the concrete transport vehicle reaches a designated position or not and indicating the vehicle cleaning and the blowing devices to start working.

As shown in fig. 6, the water supply device is composed of a bottom horizontal water inlet pipe 7, a bottom spray head 8, a bottom vertical water inlet pipe 9, a side water inlet pipe 11, a side spray head 12, a branch water inlet pipe 30, a main water inlet pipe 31, a clean water tank 32, a sewage pump 33 and other structures, clean water in the clean water tank 32 is pumped up by the sewage pump 33 and conveyed into the branch water inlet pipe 30 and the bottom horizontal water inlet pipe 7 through the main water inlet pipe 31, the branch water inlet pipe 30 conveys the clean water to the bottom vertical water inlet pipe 9 and the side water inlet pipe 11, and the clean water is sprayed out through the bottom spray head 8 and the side spray head 12 to wash the concrete carrier.

As shown in fig. 7, the waste wet concrete recovery system comprises a flushing drain 5, a stainless steel filter tank 34, a sand filter screen 35, a primary drain pipe 36, a sand slide groove 37, a sand separator 38, a sand slide groove 39, a sand slide groove 40, a sand collection box 41, a sand collection box 42, a filter tank inner wall 43 and the like, and the waste wet concrete recovery system comprises a sand filter device, a sand slide device and a sand screening device. The sewage and wastewater with wet concrete in the flushing drainage ditch 5 flows into the sand and stone filtering device, is filtered by the sand and stone filtering device, the filtered sewage and wastewater flows into the primary drainage pipe 36, and the filtered sand and stone slides into the sand and stone sliding device and enters the sand and stone screening device for separation by the sand and stone sliding device.

As shown in fig. 8-10, the sand filtering device of the waste wet concrete recycling system mainly comprises a flushing drainage ditch 5, a stainless steel filtering tank 34, a sand filtering screen 35, a first-stage drainage pipe 36, an inner wall 43 of the filtering tank, a connecting shaft 44, a binding wire 45 and other structures, wherein the inner wall 43 of the filtering tank is of a stainless steel structure, the sand filtering screen 35 can filter sand in wastewater, the sand is reserved on the sand filtering screen 35, and the wastewater flows into the first-stage drainage pipe 36; the sand filter screen 35 is composed of two pieces, the two pieces are bound together through binding wires 45, each end is provided with a connecting shaft 44, the connecting shafts 44 are fixed on the inner wall 43 of the filter tank, the sand filter screen 35 can rotate around the connecting shafts 44, after the binding wires 45 are loosened, the sand filter screen 35 rotates to be lapped on the sand sliding groove 37, and sand rolls into the sand sliding groove 37. The sand and stone sliding device comprises a stainless steel filter tank 34, a sand and stone sliding groove 37, a groove end baffle 46, supporting legs 47, a feed hopper 48 and the like, wherein one end of the sand and stone sliding groove 37 is arranged in the stainless steel filter tank 34, the end baffle 46 is arranged at the port of the sand and stone sliding groove, the other end of the sand and stone sliding groove is connected with the feed hopper 48, the supporting legs 47 are arranged at the bottom of the sand and stone sliding groove 37, the sand and stone sliding groove 37 is inclined at an angle of 30 degrees, one high end of the sand and stone sliding groove is positioned in the stainless steel filter tank 34, one low end of the sand and stone sliding groove is positioned in the feed hopper 48, and sand and stone filtered by the sand and stone filtering net 35 slide into the feed hopper 48 through the sand and stone sliding groove 37.

As shown in fig. 11, the sand and stone screening device comprises a sand and stone separator 38, a sand sliding groove 39, a stone dust sliding groove 40, a sand collecting box 41, a stone dust collecting box 42, a feed hopper 48, a steel supporting platform 49 and the like, wherein the sand and stone separator 38 is fixed on the steel supporting platform 49, the feed hopper 48 is arranged at the upper part of the sand and stone separator 38, the sand sliding groove 39 and the stone dust sliding groove 40 are respectively arranged at the lower part of the sand and stone separator 38, the sand sliding groove 39 and the stone dust sliding groove 40 are respectively connected with the sand collecting box 41 and the stone dust collecting box 42, sand and stone are separated from sand and stone in the feed hopper 48 through the sand and stone separator 38, the sand slides into the sand collecting box 41 through the sand sliding groove 39, and the stone slides into the stone dust collecting box 42 through the stone dust sliding groove 40.

As shown in fig. 12 to 13, the multistage sedimentation tank system comprises a main water inlet pipe 31, a clean water tank 32, a sewage pump 33, a primary water discharge pipe 36, a grit chamber 50, a fine grit filtering device 51, a secondary water discharge pipe 52, a sedimentation tank wall 53, a primary sedimentation tank 54, a ditch 55, a secondary sedimentation tank 56, a filtering tank 57, a filtering device 58, a tertiary sedimentation tank 59, a filtering device water outlet 60, a water supplementing pipe 61, a handle 62, a filtering device inner wall 63, a filtering device top plate 64, a filtering screen 65, fine water permeable cloth 66, a reinforcement cage 67, a steel wire safety net 68, crushed stones 69, a slide rail 70, a rotary folding steel cover plate 71, a left cover plate 72, a right cover plate 73, a rotary connecting shaft 74, a slide wheel 75 and the like, and the multistage sedimentation tank system is composed of grit devices, multistage sedimentation tanks, filtering devices, clean water storage devices, sedimentation tank covering devices and the like. The sewage and waste water in the first-stage drain pipe 36 flows into the sand setting device for fine sand filtering, the sewage and waste water after fine sand particles are filtered enters the multi-stage sedimentation tank for sedimentation through the second-stage drain pipe 52 and the water channel 55, particles and floccules invisible to naked eyes are filtered through the filtering device, and finally the sewage and waste water flows into the clean water storage device for storage for production and cleaning and repeated use.

As shown in fig. 14 to 15, the sand setting device comprises a primary drain pipe 36, a sand setting tank 50, a fine particle filtering device 51, a secondary drain pipe 52, a handle 62, a filtering device inner wall 63, a filtering device top plate 64, a filter screen 65 and the like, wherein the fine sand filtering device 51 consists of the handle 62, the filtering device inner wall 63, the filtering device top plate 64 and the filter screen 65, and the filtering device inner wall 63 and the filtering device top plate 64 are all stainless steel plate structures and are assembled into a whole through welding; the handle 62 is welded on a top plate 64 of the filtering device, and the filter screen 65 is welded on the bottom of the inner wall 63 of the filtering device; the fine sand grain filtering device 51 is placed in the grit chamber 50, and the filtering device top plate 64 is placed on the wall of the grit chamber 50; after the sewage and wastewater in the primary drain pipe 36 flows into the grit chamber 50, the sewage and wastewater is filtered by the filter screen 65, fine sand particles are reserved on the filter screen 65, and the sewage and wastewater is discharged through the secondary drain pipe 52.

The structure diagram of the multistage sedimentation tank system shown in fig. 13 comprises a secondary drainage pipe 52, a sedimentation tank wall 53, a primary sedimentation tank 54, a ditch 55, a secondary sedimentation tank 56, a filter tank 57, a filter device 58, a tertiary sedimentation tank 59 and the like, wherein sewage and wastewater after fine sand particles are filtered out enters the multistage sedimentation tank through the secondary drainage pipe 52 for sedimentation, the secondary drainage pipe 52 is connected with the primary sedimentation tank 54, the sedimentation tank wall 53 is of a precast concrete structure, the ditch 55 is arranged at the top of the tank wall between the primary sedimentation tank 54 and the secondary sedimentation tank 56, the ditch 55 is also arranged at the top of the tank wall between the secondary sedimentation tank 56 and the filter tank 57, and the filter device 58 is arranged between the filter tank 57 and the tertiary sedimentation tank 59; the sewage flowing in from the secondary drain pipe 52 is subjected to primary sedimentation through the primary sedimentation tank 54, enters the secondary sedimentation tank 56 through the water channel 55 to carry out secondary sedimentation after the primary sedimentation tank 54 is full, enters the filter tank 57 through the water channel 55 after the secondary sedimentation tank 56 is full, filters particles and floccules invisible to naked eyes in the filter tank 57 by the filter device 58, and enters the tertiary sedimentation tank 59 to carry out final sedimentation after the filter tank 57 is full.

As shown in fig. 16, the filtering device of the multistage sedimentation tank system comprises a filtering tank 57, a filtering device 58, a three-stage sedimentation tank 59, a filtering device water outlet 60, fine water permeable cloth 66, a reinforcement cage 67, a steel wire safety net 68, broken stone 69 and the like, wherein the filtering device 58 is arranged at the tank wall in the filtering tank 57, the steel wire safety net 68 is bound by the reinforcement cage 67 in the skeleton structure of the filtering device 58, broken stone 69 is filled in a cavity surrounded by the steel wire safety net 68, the fine water permeable cloth 66 is wrapped outside the reinforcement cage 67, and the filtering device water outlet 60 is arranged at the filtering device 58; the sewage in the filter tank 57 can be filtered to remove invisible particles and floccules through the filter device 58, and the filtered sewage flows to the three-stage sedimentation tank 59 through the water outlet 60 of the filter device.

As shown in fig. 13, after the three-stage sedimentation tank 59 of the multi-stage sedimentation tank system is full, the sewage flows into the clean water storage device for storage, the clean water storage device comprises a main water inlet pipe 31, a clean water tank 32, a sewage pump 33, a water supplementing pipe 61 and other structures, the sewage pump 33 is arranged in the clean water tank 32, the sewage pump 33 can convey sewage in the clean water tank 32 to a production and flushing vehicle for water use through the main water inlet pipe 31, the water supplementing pipe 61 is arranged in the clean water tank 32, and when the water quantity in the clean water tank 32 is insufficient, water can be injected into the clean water tank 32 through the water supplementing pipe 61.

17-19, the multi-stage sedimentation tank system rotates folding steel cover plate to cover the sedimentation tank, and comprises a sedimentation tank wall 53, a sliding rail 70, a rotating folding steel cover plate 71, a left cover plate 72, a right cover plate 73, a rotating connecting shaft 74, sliding wheels 75 and the like, wherein the sliding rail 70 is arranged on the sedimentation tank wall 53, the rotating folding steel cover plate 71 is formed by splicing the left cover plate 72 and the right cover plate 73 through the rotating connecting shaft 74 and can rotate around the rotating connecting shaft 74, the left cover plate 72 and the right cover plate 73 are provided with a plurality of sliding wheels 75, the sliding wheels 75 are matched with the sliding rail 70, the sliding wheels 75 can slide on the sliding rail 70, and the sedimentation tank can be fully sealed after the left cover plate 72 and the right cover plate 73 are fully unfolded by the rotating folding steel cover plate 71.

As shown in fig. 20, the plant area rain and sewage recovery system comprises a flushing drainage ditch 5, a sewage interception grating 6, a soil ramming 15, a garbage protection net 20, a field ground 76, a drainage type curb filter tank 77, a rainwater drainage ditch 78, a rain water drain well 79 easy to clean, a filter tank high wall 80, a filter tank low wall 81, a high wall drain hole 82, a low wall drain hole 83, a filter tank 84, an L-shaped curb filter tank cover plate 85, a hook 86, a silt filter screen 87 and the like, the drainage type curb filter tank 77 is arranged around the field ground 76, the rainwater drainage ditch 78 is arranged between the four corners of the plant area, the rain water drain well 79 easy to clean and the drainage type curb filter tank 77, the flushing drainage ditch 5 is connected with the rain water drain ditch 78, and the rain water collected in the rain water drain well 79 is separated and precipitated by a water pump to a purification system, so that sand, stone and water recycling is realized.

As shown in fig. 21, the drainage type kerbstone filter tank 77 is composed of a filter tank high wall 80, a filter tank low wall 81, a high wall drain hole 82, a low wall drain hole 83, a filter tank 84, an L-shaped kerbstone filter tank cover plate 85 and the like, the high wall drain hole 82 is uniformly formed in the filter tank high wall 80, the low wall drain hole 83 is uniformly formed in the filter tank low wall 81, the packing soil 15 is tamped outside the filter tank high wall 80, rainwater outside the filter tank high wall 80 enters the filter tank 84 through the high wall drain hole 82, the concrete on the field floor 76 is poured inside the filter tank low wall 81, and rainwater and cleaning wastewater on the field floor 76 enter the filter tank 84 through the low wall drain hole 83, and the L-shaped kerbstone filter tank cover plate 85 covers the drainage type kerbstone filter tank 77.

As shown in fig. 22, the drainage type curb filter tank is connected with the rainwater well easy to clean, a rainwater drainage ditch 78 is arranged between the rainwater well easy to clean 79 and the drainage type curb filter tank 77, the drainage type curb filter tank 77 is placed on the rainwater drainage ditch 78, the size of the rainwater drainage ditch 78 in the tank is larger than that of the drainage type curb filter tank 77, and the rainwater drainage ditch 78 is embedded in the rainwater well easy to clean 79. Rainwater and sewage collected in the rainwater well 79 easy to clean is pumped to a purification system by a water pump to be separated and precipitated, so that sand, stone and water can be recycled.

As shown in fig. 23, a sludge filter screen 87 is arranged in the easily cleaned rainwater well 79, three hooks 86 are arranged on the sludge filter screen 87, the hooks 86 are hooked on the top of the easily cleaned rainwater well 79, and the sludge filter screen 87 is used for filtering sundries such as leaves, garbage and the like.

As shown in fig. 24, the structure of the connection between the flushing drain and the rainwater drain (E-E cross-sectional view in fig. 20), the flushing drain 5 is connected to the rainwater drain 78, the sewage interception grid 6 is disposed in the flushing drain 5, and the garbage protection net 20 is laid on top.

As shown in fig. 25, the ground surface 76 of the field has a splayed slope, and is inclined to both sides by an angle of 5% with the flushing drain 5 as a center line.

As shown in fig. 26, the invention also provides a system and a method for recycling factory wastewater of a ready-mixed concrete mixing station, which are characterized by comprising the following steps:

(1) The vehicle is driven into the cleaning parking place: the sewage pump 33 conveys the clean water in the clean water tank 32 to the bottom surface transverse water inlet pipe 7, the bottom surface longitudinal water inlet pipe 9, the side water inlet pipe 11 and the like through the main water inlet pipe 31, the precast concrete protecting cover 10 at the top of the longitudinal pit 29 is lifted and removed, and a transport vehicle and a concrete tank truck in a car washing station enter a washing parking space from a car washing station inlet.

(2) Vehicle cleaning system washes car and weathers: the sensor 27 on the fixing plate 22 on the inner side of the side baffle 14 automatically recognizes and senses the vehicle entering position, related information is transmitted to the operation box 26, the operation box 26 automatically controls the opening of a water inlet pipe valve, the bottom surface spray head 8 sprays water to wash the bottom of the vehicle, the side spray head 12 sprays water to wash the vehicle body, after the water spraying washing is completed, the operation box 26 controls the blowing device 13 to blow, and the vehicle drives away from the cleaning parking space after blowing.

(3) Drainage of the ground in the field: when the vehicle cleaning system sprays water to clean or heavy rain the vehicle, a large amount of sewage in the field ground 76 flows to the drainage type curb filter tank 77 and finally converges to the easily cleaned catch basin 79, and the sludge filter screen 87 in the easily cleaned catch basin 79 performs preliminary filtration on sundries such as rain sewage, garbage, leaves and the like.

(4) Pumping and discharging sewage to a stainless steel filter tank: the sewage filtered in the easy-to-clean catch basin 79 is pumped to the stainless steel filter tank 34 through the sewage pump 33, and a large amount of sewage in the flushing drainage ditch 5 of the vehicle cleaning system flows into the stainless steel filter tank 34 after being filtered layer by layer through the multi-channel sewage interception grid 6, the sewage is filtered by the sand filtering device of the stainless steel filter tank 34, the filtered sewage flows into the grit chamber 50, and the filtered sand slides into the sand separator 38 through the sand sliding device.

(5) Sand and stone separation: starting the sand-stone separator 38 to separate sand and stone, sliding the sand into the sand collecting box 41 through the sand sliding groove 39, sliding the stone into the stone collecting box 42 through the stone sliding groove 40, and conveying the sand and stone in the sand collecting box 41 and the stone collecting box 42 to a stock yard for stacking for recycling.

(6) Fine sand particle filtration: the sewage flowing out of the stainless steel filter tank 34 is discharged to the grit chamber 50, fine sand particles are filtered by a filter screen 65 in the grit chamber 50, and the sewage and wastewater after the fine sand particles are filtered is discharged to the primary sedimentation tank 54 by the secondary drain pipe 52.

(7) Spreading the precipitate Chi Gang cover plate: the slide rail 70 is arranged on the sedimentation tank wall 53, the rotary folding steel cover plate 71 is customized in the factory in advance according to the size of each level of sedimentation tank, the sedimentation tank wall 53 is hung to the sedimentation tank wall, the sliding wheel 75 of the sedimentation tank wall is embedded into the slide rail 70, and the rotary folding steel cover plate 71 is rotated and unfolded, so that the sedimentation tank is fully covered.

(8) Primary and secondary precipitation of sewage: the sewage flowing in from the secondary drain pipe 52 is subjected to primary sedimentation through the primary sedimentation tank 54, enters the secondary sedimentation tank 56 through the water channel 55 after the primary sedimentation tank 54 is full of water, is subjected to secondary sedimentation, and enters the filter tank 57 through the water channel 55 after the secondary sedimentation tank 56 is full of water.

(9) Filtering in a filtering tank: after the sewage enters the filter tank 57, the sewage is filtered by the filter device 58 to remove particles and floccules invisible to naked eyes, and the filtered sewage flows to the three-stage sedimentation tank 59 for final sedimentation through the water outlet 60 of the filter device.

(10) And (3) water storage in a clean water pond: the water in the three-stage sedimentation tank 59 flows into the clean water tank 32 for storage after being full, a sewage pump 33 is arranged in the clean water tank 32, the sewage pump 33 can convey clean water in the clean water tank 32 to a production and flushing vehicle for water use through a main water inlet pipe 31, a water supplementing pipe 61 is arranged in the clean water tank 32, and when the water quantity in the clean water tank 32 is insufficient, water is supplemented into the clean water tank 32 through the water supplementing pipe 61.

Claims

1. The utility model provides a ready-mixed concrete mixing station factory waste water resource utilization system which characterized in that includes: the system comprises a vehicle cleaning system (1), a waste wet concrete recovery system (2), a multi-stage sedimentation tank system (3) and a factory rain sewage recovery system (4); the vehicle cleaning system (1) consists of a drainage ditch dirt intercepting device, a bottom surface flushing device, a side blowing device, an operation induction collecting device and a water supply device; the waste wet concrete recovery system (2) comprises a sand filtering device, a sand sliding device and a sand screening device; the multistage sedimentation tank system (3) consists of a sand setting device, a multistage sedimentation tank, a filtering device, a clear water storage device and a sedimentation tank covering device;

The sewage interception device of the drainage ditch consists of a flushing drainage ditch (5), an interception grating (6), a limiting clamp block (16), an interception grating support frame (18), a sewage surface height line (19) and a garbage protection net (20); a plurality of limiting clamping blocks (16) are arranged at the bottom of the flushing drainage ditch (5) at equal intervals, and dirt-intercepting grids (6) are arranged in the limiting clamping blocks (16); a dirt interception grid support frame (18) is arranged between adjacent dirt interception grids (6), and a layer of garbage protection net (20) is paved at the top of each dirt interception grid (6); a sewage surface height line (19) is arranged at a distance lower than the top of the sewage interception grid (6);

the bottom surface flushing device consists of a bottom surface transverse flushing device and a bottom surface longitudinal flushing device; the bottom surface transverse flushing device consists of a flushing drainage ditch (5), a bottom surface transverse water inlet pipe (7), a bottom surface spray head (8), a water pipe support frame (17) and a garbage protection net (20); the bottom surface longitudinal flushing device consists of a bottom surface spray head (8), a bottom surface longitudinal water inlet pipe (9), a precast concrete protective cover (10), a water pipe support frame (17), lifting lugs (28), longitudinal pit slots (29) and a branch water inlet pipe (30);

the side flushing device consists of a side water inlet pipe (11), a side spray head (12), a side baffle (14), a water pipe support frame (17) and a branch water inlet pipe (30), wherein the side water inlet pipe (11) is connected with the branch water inlet pipe (30); the side water inlet pipe (11) is supported on the ground by the water pipe support frame (17), a plurality of side spray heads (12) are arranged on the side water inlet pipe (11) at equal intervals, and side baffles (14) are arranged on the outer side of the side water inlet pipe (11);

The operation induction assembly device comprises a square steel pipe vertical rod (21), a fixing plate (22), an operation box (26) and an inductor (27); square steel pipe vertical rods (21) are arranged in the gap between the two air blowing devices (13), and the square steel pipe vertical rods (21) are fixed on the ground; a fixing plate (22) is arranged at the top of the square steel pipe vertical rod (21), and an operation box (26) and an inductor (27) are arranged on the fixing plate (22);

the filtering device in the multistage sedimentation tank system (3) comprises a filtering device water outlet (60), fine water permeable cloth (66), a reinforcement cage (67), a steel wire safety net (68) and broken stone (69); the filtering device (58) is arranged at the tank wall in the filtering tank (57);

the sand filtering device, the sand sliding device and the sand screening device in the waste wet concrete recycling system (2) are specifically as follows:

the sand filtering device consists of a flushing drainage ditch (5), a stainless steel filtering tank (34), a sand filtering screen (35), a primary drainage pipe (36), an inner wall (43) of the filtering tank, a connecting shaft (44) and a binding wire (45); the stainless steel filter tank (34) is connected with the flushing drainage ditch (5); the sand filter screen (35) is arranged in the stainless steel filter tank (34); the primary drain pipe (36) is connected with a drain outlet of the stainless steel filter tank (34); the sand filter screen (35) consists of two blocks, and the two blocks of the sand filter screen (35) are bound together by a binding wire (45); the end part of each sand filter screen (35) is provided with a connecting shaft (44), and the connecting shaft (44) is fixed on the inner wall (43) of the filter tank; the sand filter screen (35) is rotationally connected with the connecting shaft (44); when the binding wires (45) are not bound with the two blocks of the sand filter screen (35), the two blocks of the sand filter screen (35) are rotationally connected with the sand sliding grooves (37);

The sand sliding device comprises a stainless steel filtering tank (34), a sand sliding groove (37), a groove end baffle (46), supporting legs (47) and a feeding hopper (48); one end of the sand sliding groove (37) is arranged in the stainless steel filter tank (34); an end baffle (46) is arranged at one port of the sand sliding groove (37), and the other port of the sand sliding groove (37) is connected with a feed hopper (48); the bottom of the sand sliding groove (37) is provided with a support leg (47), and the sand sliding groove (37) is inclined at a certain angle; one end of the sand sliding groove (37) with low height is positioned in the stainless steel filter tank (34), and one end of the sand sliding groove (37) with high height is positioned in the feed hopper (48);

the sand and stone screening device comprises a sand and stone separator (38), a sand sliding groove (39), a broken stone sliding groove (40), a sand collecting box (41), a broken stone collecting box (42), a feed hopper (48) and a steel supporting platform (49); the sand-stone separator (38) is fixed on a steel supporting platform (49), and a feed hopper (48) is arranged at the upper part of the sand-stone separator (38); the lower part of the sand-stone separator (38) is respectively provided with a sand sliding groove (39) and a broken stone sliding groove (40); the sand sliding groove (39) and the broken stone sliding groove (40) are respectively connected with the sand collecting box (41) and the broken stone collecting box (42);

The plant area rain sewage recovery system comprises a flushing drainage ditch (5), a sewage interception grid (6), a soil ramming device (15), a garbage protection net (20), a field ground (76), a drainage type curb filter tank (77), a rainwater drainage ditch (78), an easy-to-clean rainwater well (79), a filter tank high wall (80), a filter tank low wall (81), a high wall drainage hole (82), a low wall drainage hole (83), a filter tank (84), an L-shaped curb filter tank cover plate (85), a hook (86) and a silt filter screen (87);

drainage type curb filter grooves (77) are formed in the periphery of the ground (76) of the field, and each drainage type curb filter groove (77) is composed of a filter groove high wall (80), a filter groove low wall (81), a high wall drain hole (82), a low wall drain hole (83), a filter groove (84) and an L-shaped curb filter groove cover plate (85); high-wall drain holes (82) are uniformly formed in the high wall (80) of the filter tank; short wall drain holes (83) are uniformly formed in the short wall (81) of the filter tank; the outside of the high wall (80) of the filter tank is filled with plain soil for tamping (15); pouring field ground (76) on the inner side of the short wall (81) of the filter tank; an L-shaped curb filter tank cover plate (85) covers the drainage type curb filter tank (77);

The method comprises the steps that sewage-cleaning-easy rainwater wells (79) are arranged at four corners of a factory, rainwater drainage ditches (78) are arranged between the sewage-cleaning-easy rainwater wells (79) and drainage type curb filter tanks (77), the drainage type curb filter tanks (77) are placed on the rainwater drainage ditches (78), and the size of the rainwater drainage ditches (78) is larger than that of the drainage type curb filter tanks (77); the flushing drainage ditch (5) is connected with the rainwater drainage ditch (78); a sludge filter screen (87) is arranged in the rainwater well (79) easy to clean; the rainwater drainage ditch (78) is embedded into the rainwater well (79) easy to clean; three hooks (86) are arranged on the sludge filter screen (87), and the hooks (86) are hooked on the top of the rainwater well (79) easy to clean;

the ground (76) of the field is a splayed slope, and the flushing drainage ditch (5) is taken as a central line and is inclined to two sides; the inside of the flushing drainage ditch (5) is provided with a dirt interception grid (6), and a garbage protection net (20) is paved at the top of the flushing drainage ditch (5).

2. The system for recycling waste water in a plant area of a ready mixed concrete mixing station according to claim 1, wherein in the multistage sedimentation tank system (3), a sand setting device, a multistage sedimentation tank, a filtering device, a clear water storage device and a sedimentation tank covering device are specifically as follows:

The sand setting device comprises a primary drain pipe (36), a sand setting tank (50), a fine sand filtering device (51) and a secondary drain pipe (52); the fine sand filtering device (51) consists of a handle (62), a filtering device inner wall (63), a filtering device top plate (64) and a filter screen (65); the inner wall (63) of the filtering device and the top plate (64) of the filtering device are assembled into a whole through welding; the handle (62) is welded on a top plate (64) of the filtering device, and the filter screen (65) is welded at the bottom of the inner wall (63) of the filtering device; the fine sand filtering device (51) is placed in the grit chamber (50), and a top plate (64) of the filtering device is placed on the wall of the grit chamber (50);

the multistage sedimentation tank comprises a secondary drain pipe (52), a sedimentation tank wall (53), a primary sedimentation tank (54), a ditch (55), a secondary sedimentation tank (56), a filter tank (57), a filter device (58) and a tertiary sedimentation tank (59); the secondary drain pipe (52) is connected with the primary sedimentation tank (54); a ditch (55) is arranged at the top of the tank wall between the primary sedimentation tank (54) and the secondary sedimentation tank (56); a ditch (55) is also arranged at the top of the tank wall between the secondary sedimentation tank (56) and the filter tank (57); a filtering device (58) is arranged between the filtering tank (57) and the three-stage sedimentation tank (59);

The framework of the filtering device (58) is formed by binding a steel wire safety net (68) by a steel reinforcement cage (67); the cavity surrounded by the steel wire safety net (68) is filled with broken stone (69), and the fine water permeable cloth (66) is wrapped outside the steel reinforcement cage (67); a water outlet (60) of the filtering device is arranged at the filtering device (58); a water outlet (60) of the filtering device is connected with a three-stage sedimentation tank (59);

the clear water storage device comprises a main water inlet pipe (31), a clear water tank (32), a sewage pump (33) and a water supplementing pipe (61); the third-stage sedimentation tank (59) is connected with the clean water tank (32); a sewage pump (33) is arranged in the clean water tank (32); one end of the sewage pump (33) is connected with a sewage port on the clean water tank (32), the other end of the sewage pump is connected with the main water inlet pipe (31), and the main water inlet pipe (31) extends to the position of the flushing vehicle; a water supplementing pipe (61) is arranged in the clean water tank (32);

the sedimentation tank covering device comprises a sedimentation tank wall (53), a sliding rail (70), a rotary folding steel cover plate (71), a left cover plate (72), a right cover plate (73), a rotary connecting shaft (74) and a sliding wheel (75); a sliding rail (70) is arranged on the sedimentation tank wall (53); the rotary folding steel cover plate (71) is formed by rotationally connecting a left cover plate (72) and a right cover plate (73) through a rotary connecting shaft (74); the folding steel cover plate (71) is in sliding connection with the sliding rail (70); a plurality of sliding wheels (75) are arranged on the left cover plate (72) and the right cover plate (73), and the sliding wheels (75) are matched with the sliding rails (70); the sliding wheel (75) is in sliding connection with the sliding rail (70).

3. The system for recycling waste water in a plant area of a ready mixed concrete mixing station according to claim 1, wherein the bottom surface flushing device, the side blowing device and the water supply device in the vehicle cleaning system (1) are specifically:

in the bottom flushing device, a bottom transverse water inlet pipe (7) is positioned at the top of a garbage protection net (20), the bottom transverse water inlet pipe (7) is supported in a flushing drainage ditch (5) by a water pipe support frame (17), and a plurality of bottom spray heads (8) are uniformly arranged on the bottom transverse water inlet pipe (7) at intervals; the longitudinal pit (29) is vertical to the flushing drainage ditch (5), and two bottom surface longitudinal water inlet pipes (9) are arranged in the longitudinal pit (29); the bottom surface longitudinal water inlet pipe (9) is supported in the longitudinal pit (29) through the water pipe support frame (17), a plurality of bottom surface spray heads (8) are also arranged on the bottom surface longitudinal water inlet pipe (9) at uniform intervals, and the bottom surface longitudinal water inlet pipe (9) is connected with the branch water inlet pipe (30); a precast concrete protective cover (10) is arranged at the top of the longitudinal pit (29), and a lifting lug (28) is arranged at the center of the precast concrete protective cover (10);

the side blowing device consists of a side water inlet pipe (11), a blowing device (13), a side baffle (14), a concrete foundation (23), a round steel pipe (24) and an electric wire (25); the concrete foundation (23) is arranged on the inner side of the side baffle (14); a circular steel tube (24) is arranged in a slit between the side water inlet pipe (11) and the side baffle (14), and the circular steel tube (24) is arranged on a concrete foundation (23); the electric wire (25) penetrates through the circular steel tube (24); the blowing device (13) is arranged at the top of the round steel pipe (24), and the blowing device (13) is connected with the electric wire (25);

The water supply device consists of a bottom transverse water inlet pipe (7), a bottom spray head (8), a bottom longitudinal water inlet pipe (9), a side water inlet pipe (11), a side spray head (12), a branch water inlet pipe (30), a main water inlet pipe (31), a clean water tank (32) and a sewage pump (33); the clean water tank (32) is connected with a sewage pump (33), the sewage pump (33) is connected with a main water inlet pipe (31), and the main water inlet pipe (31) is connected with a branch water inlet pipe (30) and a bottom surface transverse water inlet pipe (7); the branch water inlet pipe (30) is connected with the bottom longitudinal water inlet pipe (9) and the side water inlet pipe (11); the bottom longitudinal water inlet pipe (9) is connected with the bottom spray head (8), and the lateral water inlet pipe (11) is connected with the lateral spray head (12); the side water inlet pipe (11) is provided with two rows of water inlet pipes up and down.

4. A ready-mix concrete mixing plant factory wastewater recycling system according to any one of claims 1 to 3, characterized in that: the inner wall (43) of the filter tank, the inner wall (63) of the filter device and the top plate (64) of the filter device are all stainless steel plate structures; the flushing drainage ditch (5) and the sedimentation tank wall (53) are both of precast concrete structures; the sand sliding groove (37) and the support leg (47) form an inclined angle of (30); the inclination angle of the field floor (76) was 5%.

5. A method of operating a plant area wastewater recycling system of a ready-mix concrete mixing plant as claimed in any one of claims 1 to 4, comprising the steps of:

step 1, a vehicle is driven into a cleaning parking space;

step 2, a vehicle cleaning system performs vehicle cleaning and blow-drying: an inductor (27) on a fixed plate (22) on the inner side of the side baffle (14) recognizes and senses the vehicle entering position, related information is transmitted to an operation box (26), and the operation box (26) controls a water inlet pipe valve to be opened; the bottom surface spray head (8) sprays water to wash the bottom of the vehicle, and the side surface spray head (12) sprays water to wash the vehicle body; after the water spraying flushing is finished, the operation box (26) controls the blowing device (13) to blow, and the vehicle drives away from the cleaning parking space after blowing;

step 3, draining water on the ground of the field area;

step 4, pumping and discharging sewage to a stainless steel filter tank in the waste wet concrete recovery system: the sewage filtered in the sewage well (79) easy to clean is pumped to the stainless steel filter tank (34) through the sewage pump (33), and a large amount of sewage in the flushing drainage ditch (5) of the vehicle cleaning system flows into the stainless steel filter tank (34) after being filtered layer by layer through the plurality of sewage interception grids (6); the sand and stone filtering device of the stainless steel filtering tank (34) filters sewage, the filtered sewage flows into the sand setting tank (50) through the primary drain pipe (36), and sand and stone filtered by the sand filtering screen (35) slide into the feed hopper (48) through the sand sliding groove (37); the filtered sand and stone slides into the sand and stone separator (38) through the feed hopper (48);

Step 5, sand and stone separation: starting a sand-stone separator (38) to separate sand from stone, wherein the sand slides into a sand collecting box (41) through a sand sliding groove (39), and the stone slides into a stone collecting box (42) through a stone sliding groove (40); conveying sand and stones in the sand collecting box (41) and the broken stone collecting box (42) to a raw material field for stacking for recycling;

step 6, fine sand particle filtration: discharging sewage flowing out of the stainless steel filter tank (34) to a sand setting tank (50), and filtering fine sand particles through a filter screen (65) in the sand setting tank (50); the fine sand particles are reserved on a filter screen (65), and the sewage and wastewater after the fine sand particles are filtered is discharged into a primary sedimentation tank (54) in a multi-stage sedimentation tank system (3) for sedimentation through a secondary drainage pipe (52) and a water channel (55);

step 7, spreading a precipitation Chi Gang cover plate: a sliding rail (70) is arranged on the sedimentation tank wall (53), a rotary folding steel cover plate (71) is customized in a factory in advance according to the size of each level of sedimentation tank, the rotary folding steel cover plate (71) is hung on the sedimentation tank wall (53), a sliding wheel (75) of the rotary folding steel cover plate (71) is embedded into the sliding rail (70), and the rotary folding steel cover plate (71) is rotated and unfolded to fully cover the sedimentation tank;

Step 8, primary and secondary precipitation of sewage: the sewage flowing in from the second-stage drain pipe (52) is subjected to preliminary sedimentation through the first-stage sedimentation tank (54); when the primary sedimentation tank (54) is full of water, the water enters the secondary sedimentation tank (56) through the water channel (55) for secondary sedimentation; when the secondary sedimentation tank (56) is full of water, the water enters the filter tank (57) through the water channel (55);

step 9, filtering in a filter tank;

and 10, storing water in a clean water tank.

6. The working method of the plant waste water recycling system of the ready-mixed concrete mixing station according to claim 5, wherein the step 1 is specifically: the sewage pump (33) conveys the clean water in the clean water tank (32) to the bottom transverse water inlet pipe (7), the bottom longitudinal water inlet pipe (9) and the side water inlet pipe (11) through the main water inlet pipe (31); hanging off the precast concrete protective cover (10) at the top of the longitudinal pit (29); a transport vehicle and a concrete tank truck in the car washing station enter a cleaning parking space from an entrance of the car washing station; the step 3 is specifically as follows: when the vehicle cleaning system sprays water to clean or heavy rain on the vehicle, rainwater on the outer side of the high wall (80) of the filter tank enters the filter tank (84) through the high wall drain hole (82), and rainwater on the ground (76) of the field area and cleaning sewage enter the filter tank (84) through the low wall drain hole (83); a large amount of sewage in the ground (76) of the field flows to the drainage type curb filter tank (77) and finally is converged to the easily-cleaned rainwater well (79), and the easily-cleaned rainwater well (79) is internally provided with a silt filter screen (87) for carrying out preliminary filtration on the rain sewage garbage and the leaves.

7. The working method of the plant waste water recycling system of the ready-mixed concrete mixing station according to claim 6, wherein the step 9 is specifically: after the sewage enters the filter tank (57), the invisible particles and floccules of the sewage are filtered by the filter device (58), and the filtered sewage flows to the three-stage sedimentation tank (59) through the water outlet (60) of the filter device for final sedimentation.

8. The working method of the plant waste water recycling system of the ready-mixed concrete mixing station according to claim 7, wherein the step 10 is specifically: the water in the three-stage sedimentation tank (59) flows into the clean water tank (32) for storage after being full, so that the clean water tank is reused by production and cleaning machinery; a sewage pump (33) is arranged in the clean water tank (32), the sewage pump (33) conveys clean water in the clean water tank (32) to a production and flushing vehicle through a main water inlet pipe (31) for water use, a water supplementing pipe (61) is arranged in the clean water tank (32), and when the water quantity in the clean water tank (32) is insufficient, water is supplemented into the clean water tank (32) through the water supplementing pipe (61).