CN114768382A

CN114768382A - Premixed concrete mixing station factory wastewater resource utilization system and operation method

Info

Publication number: CN114768382A
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: 2022-07-22
Anticipated expiration: 2042-04-21
Also published as: CN114768382B

Abstract

The invention relates to a factory wastewater resource utilization system of a premixed concrete mixing station, which comprises the following steps: the system comprises a vehicle cleaning system, a waste wet concrete recovery system, a multi-stage sedimentation tank system and a plant rain sewage recovery system. The beneficial effects of the invention are: the sewage interception bars are arranged in the washing drainage ditch to intercept the sewage of the washing wastewater of the vehicle, and the sewage interception bar support frame is used for enhancing the overall stability of the sewage interception bars; the sedimentation tank is provided with the covering device, can freely slide on the sedimentation tank, is easy to close and open, and avoids the pollution of sundries such as garbage, dust, leaves and the like in the air in the sewage sedimentation process; according to the bottom surface flushing device and the side surface flushing device, all bottom surface nozzles can flush the bottom of the concrete transport vehicle, the vehicle can be flushed in all directions, and the side surface baffle plate reduces splashing of waste water in the flushing process.

Description

Factory wastewater resource utilization system of premixed concrete mixing station and operation method

Technical Field

The invention belongs to the technical field of concrete mixing and transportation, and particularly relates to a system for recycling factory wastewater of a premixed concrete mixing station and an operation method.

Background

The commercial concrete mixing plant inevitably produces a large amount of waste water in the production and operation process, the waste water contains conventional building materials such as sandstone, cement, if the waste water is directly discharged, serious pollution can be caused to the natural environment, a large amount of resources can be wasted, part of recycling is adopted in each commercial concrete production plant area at present, but the whole recycling effect is not optimistic, and the existing problems are mainly as follows:

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

(2) The washing of the bottom of the vehicle is not comprehensive, a certain washing blind area exists, waste water splashes in the washing process, and the vehicle is wet to be drained out of a factory area, so that the normal operation of the field area is influenced.

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

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

(5) After the waste water screening machine filters the grit, need the manual work to sweep out the grit in unison, clean the clearance difficulty, the screening technology is complicated, sand, stone reuse rate low grade problem.

In order to solve the problems, the invention is urgently needed to provide a simple and effective system for recycling factory wastewater of a premixed concrete mixing station and an operation method thereof, so that the recycling rate of rainwater and sewage is improved, the cleaning efficiency of vehicles is improved, the influence on factories and pavements is reduced, and water is saved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a system for recycling factory wastewater of a premixed concrete mixing station and an operation method.

This kind of premixed concrete mixing station factory waste water resource utilization system includes: the system comprises a vehicle cleaning system, a waste wet concrete recovery system, a multi-stage sedimentation tank system and a plant rain sewage recovery system; the vehicle cleaning system consists of a drainage ditch sewage interception device, a bottom surface flushing device, a side surface blowing device, an operation induction set 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 drainage ditch sewage interception device consists of a flushing drainage ditch, a sewage interception grid, a limiting clamping block, a sewage interception grid 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 intervals, and sewage 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 protective net is laid 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, a lifting lug, a longitudinal pit slot and a 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 a water pipe support frame, a plurality of side spray heads are arranged on the side water inlet pipe at intervals, and a side baffle is arranged on the outer side of the side water inlet pipe;

the operation induction set device comprises a square steel pipe upright rod, a fixed board, an operation box and an inductor; a square steel pipe vertical rod is arranged in the gap between the two middle blowing devices and is fixed on the ground; the top of the square steel pipe upright stanchion is provided with a fixed plate, and the fixed plate is provided with an operation box and an inductor;

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

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

the sandstone filtration device consists of a flushing drainage ditch, a stainless steel filtration tank, a sandstone filtration screen, a primary drainage pipe, the inner wall of the filtration tank, a connecting shaft and binding wires; the stainless steel filter 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 water outlet of the stainless steel filter tank; the sand filter screen is composed of two blocks, and the two blocks of the sand filter screen are bound into a whole 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 sandstone filter screen, the two blocks of the sandstone filter screen are rotationally connected with the sandstone sliding groove;

the sand and stone sliding device comprises a stainless steel filtering tank, a sand and stone sliding groove, a groove end baffle, supporting legs and a feeding hopper; one end of the sandstone sliding groove is arranged in the stainless steel filtering tank; one port of the sand slide groove is provided with an end baffle, and the other port of the sand slide groove is connected with the feed hopper; the bottom of the sandstone sliding groove is provided with a support leg, and the sandstone sliding groove is at a certain inclination angle; the lower end of the sandstone sliding groove is positioned in the stainless steel filtering tank, and the higher end of the sandstone 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 feeding hopper and a steel supporting platform; the sand-stone separator is fixed on the steel supporting platform, and the upper part of the sand-stone separator is provided with a feed hopper; 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 gravel sliding groove are respectively connected with the sand collecting box and the gravel collecting box.

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

the sand setting device comprises a primary water drainage pipe, a sand setting tank, a fine sand filtering device and a secondary water drainage pipe; the fine sand filtering device consists of a handle, the inner wall of the filtering device, a top plate of the filtering device and a filtering net; the inner wall of the filtering device and the top plate of the filtering device are spliced into a whole by 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 chamber wall of the grit chamber;

the multistage sedimentation tank comprises a secondary drainage pipe, a sedimentation tank wall, a primary sedimentation tank, a water channel, a secondary sedimentation tank, a filtering device and a tertiary sedimentation tank; the second-stage water drainage pipe is connected with the first-stage sedimentation tank; a water channel is arranged at the top of the tank wall between the first-stage sedimentation tank and the second-stage sedimentation tank; a water channel is also arranged at the top of the tank wall between the secondary sedimentation tank and the filtering tank; a filtering device is arranged between the filtering tank and the third-stage sedimentation tank;

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

the clean water storage device comprises a main water inlet pipe, a clean water tank, a sewage pump and a water replenishing 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 a vehicle washing position; a water replenishing pipe is arranged in the clean water tank;

the sedimentation tank covering device comprises a sedimentation tank wall, a slide rail, a rotary folding steel cover plate, a left cover plate, a right cover plate, a rotary connecting shaft and a sliding wheel; a slide 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 respectively, and the sliding wheels are matched with the sliding rails; the sliding wheel is connected with the sliding rail in a sliding way.

Preferably, the method comprises the following steps:

the plant area rain sewage recovery system comprises a flushing drainage ditch, a sewage interception grid, a rammed earth, a garbage protection net, a ground of a field area, a drainage type kerbstone filter tank, a rainwater drainage ditch, a rainwater well easy to clean, a high wall of the filter tank, a low wall of the filter tank, a high wall drain hole, a low wall drain hole, a filter tank, an L-shaped kerbstone filter tank cover plate, a hook and a sludge filter screen;

the periphery of the ground of the field area is provided with a drainage type kerbstone filter tank, and the drainage type kerbstone filter tank 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 kerbstone filter tank cover plate; high-wall drain holes are uniformly formed in the high wall of the filtering groove; the low wall of the filter tank is uniformly provided with low wall drain holes; filling and tamping the outside of the high wall of the filtering tank with plain soil; pouring the field ground on the inner side of the low wall of the filter tank; the L-shaped kerbstone filter tank cover plate covers the drainage type kerbstone filter tank;

rainwater wells easy to clean are arranged at four corners of a plant area, rainwater drainage ditches are arranged between the rainwater wells easy to clean and the drainage type kerbstone filter tanks, the drainage type kerbstone filter tanks are placed on the rainwater drainage ditches, and the sizes of the rainwater drainage ditches in the ditches are larger than those of the drainage type kerbstone filter tanks; the flushing drainage ditch is connected with the rainwater drainage ditch; a sludge filter screen is arranged in the catch basin 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 hooked at the top of the catch basin easy to clean;

the ground of the field area is a splayed slope, and inclines to two sides by taking the flushing drainage ditch as a central line; a sewage interception grid is arranged in the flushing drainage ditch, and a garbage protection net is laid on the top of the flushing drainage ditch.

As preferablely, bottom washing unit, side blast apparatus and water supply installation specifically are in the vehicle cleaning system:

in the bottom surface washing device, a bottom surface transverse water inlet pipe is positioned at the top of the garbage protective net, the bottom surface transverse water inlet pipe is supported in the washing drainage ditch by a water pipe supporting frame, and a plurality of bottom surface spray heads are arranged on the bottom surface transverse water inlet pipe at uniform intervals; the longitudinal pot holes are vertical to the flushing drainage ditch, and two bottom surface longitudinal water inlet pipes are arranged in the longitudinal pot holes; the bottom surface longitudinal water inlet pipe is supported in the longitudinal pit groove through a water pipe supporting frame, a plurality of bottom surface spray heads are also arranged on the bottom surface longitudinal water inlet pipe at even intervals, and the bottom surface longitudinal water inlet pipe is connected with the branch water inlet pipe; a precast concrete protective cover is arranged at the top of the longitudinal pit slot, and a lifting lug is arranged at the midpoint of the precast concrete protective cover;

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 pipe is arranged in a slit between the side water inlet pipe and the side baffle and is arranged on a concrete foundation; the electric wire penetrates through the round steel pipe; the blowing device is arranged at the top of the round steel pipe and 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 surface longitudinal water inlet pipe and the side water inlet pipe; the bottom surface longitudinal water inlet pipe is connected with the bottom surface spray head, and the side water inlet pipe is connected with the side spray head; two rows of water inlet pipelines are arranged above and below the side water inlet pipe.

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 walls of the washing drainage ditch and the sedimentation tank are both of prefabricated concrete structures; the sandstone sliding groove and the support leg form an inclined angle; the inclined angle of the ground of the field area is 5 percent.

The working method of the plant waste water resource utilization system of the premixed concrete mixing station comprises the following steps:

step 1, driving a vehicle into a cleaning parking space;

step 2, the vehicle cleaning system carries out vehicle cleaning and blow-drying: the sensor on the fixing plate at the inner side of the side baffle recognizes and senses the vehicle entering, and transmits related information to the operation box, and the operation box controls the valve of the water inlet pipe to be opened; 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 and washing are finished, the operation box controls the air blowing device to blow air, and the vehicle drives away from the cleaning parking space after the air blowing;

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

step 4, pumping and discharging the sewage to a stainless steel filter tank in the waste wet concrete recovery system: pumping the filtered sewage in the rainwater well easy to clean to a stainless steel filtering tank through a sewage pump, and simultaneously filtering a large amount of sewage in a flushing drainage ditch of the vehicle cleaning system through a plurality of sewage interception grid layers and then flowing into the stainless steel filtering tank; a sand and stone filtering device of the stainless steel filtering tank filters sewage, the filtered sewage and wastewater flows into the grit chamber through a primary drain pipe, and sand and stone filtered by a sand and stone filtering net slide into a feed hopper through a sand and stone sliding groove; the filtered sand and stone slide into a sand and stone separator through a feed hopper;

step 5, sand and stone separation: starting a sand-stone separator, separating sand and stone, sliding the sand into a sand collecting box through a sand sliding chute, and sliding the stone into a gravel collecting box through a gravel sliding chute; conveying the sand and the stones in the sand collecting box and the broken stone collecting box to a raw material yard for stacking for recycling;

step 6, fine sand particle filtration: discharging the sewage flowing out of the stainless steel filter tank to a grit chamber, and filtering fine sand particles through a filter screen in the grit chamber; fine sand grains are left on the filter screen, and sewage and wastewater after fine sand grains are filtered out are discharged into a primary sedimentation tank in the multistage sedimentation tank system through a secondary drain pipe and a water channel for sedimentation;

step 7, spreading a steel cover plate of the sedimentation tank: installing slide rails on the wall of the sedimentation tank, customizing a rotary folding steel cover plate in a factory in advance according to the size of each sedimentation tank, hoisting the rotary folding steel cover plate to the wall of the sedimentation tank, embedding a sliding wheel of the rotary folding steel cover plate into the slide rails, and rotatably unfolding the rotary folding steel cover plate to completely cover the sedimentation tank;

step 8, primary and secondary sewage precipitation: the sewage flowing in from the secondary drainage pipe passes through a primary sedimentation tank for primary sedimentation; when the primary sedimentation tank is full of water, the water enters the secondary sedimentation tank through the water channel for secondary sedimentation; when the secondary sedimentation tank is full of water, the water enters the filtering tank through the water channel;

step 9, filtering in a filtering tank;

and step 10, storing water in a clean water tank.

Preferably, step 1 specifically comprises: the sewage pump conveys the clean water in the clean water pool to the bottom surface transverse water inlet pipe, the bottom surface 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 slot; a transport vehicle and a concrete tank car in the car washing yard enter a washing parking lot from an entrance of the car washing yard; the method comprises the following steps: when the vehicle cleaning system is used for cleaning a vehicle by spraying water or raining, 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 the field area and cleaning wastewater both enter the filter tank through the low wall drain hole; a large amount of sewage flows to drainage type curb filter-tank in the field ground to finally assemble the rainwater well of easily decontaminating, silt filter screen carries out prefilter to rain sewage rubbish, leaf in the rainwater well of easily decontaminating.

Preferably, step 9 is specifically: after sewage got into the filtering ponds, the sewage filtered the device through filtering and filtered invisible granule of naked eye, the floccule, and the sewage after the filtration flowed to tertiary sedimentation tank through the filter equipment delivery port and carried out final sediment.

Preferably, step 10 specifically comprises: after the water in the third-stage sedimentation tank is full, the water flows into a clean water tank for storage, and is repeatedly used by production and cleaning machines; the sewage pump is arranged in the clean water tank, clean water in the clean water tank is conveyed to a production and washing vehicle through the main water inlet pipe by the sewage pump for water use, the water replenishing pipe is arranged in the clean water tank, and when the water quantity in the clean water tank is insufficient, water is replenished into the clean water tank through the water replenishing pipe.

The beneficial effects of the invention are:

(1) the sewage interception bars are arranged in the washing drainage ditch to intercept the washing wastewater of the vehicle, and the sewage interception bar support frame is used for enhancing the overall stability of the sewage interception bars; the sedimentation tank is provided with the covering device, can freely slide on the sedimentation tank, is easy to close and open, and avoids pollution of sundries such as garbage, dust, leaves and the like in the air in the sewage sedimentation process.

(2) According to the bottom surface flushing device and the side surface flushing device, all bottom surface nozzles can flush the bottom of the concrete transport vehicle, the vehicle can be flushed in all directions, and the side surface baffle plate reduces splashing of waste water in the flushing process; meanwhile, an operation box is arranged for controlling the water spraying quantity of a spray head of the whole vehicle cleaning system and the air quantity of the blowing device, and an inductor is arranged for inducing whether the concrete transport vehicle reaches a specified position and indicating the vehicle cleaning and the 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 degree of mechanization is high, and the waste of water resources is reduced.

(3) The invention adopts the fine sand grain filtration of the sand setting device, and the filtering device is arranged in the filtering tank to filter out invisible particles and floccules, so that the water purification degree is high, the production requirement is met, and the economic and technical benefits are better.

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

(5) The plant rain sewage recovery system not only recovers sewage and wastewater of a washing vehicle in a ready-mixed concrete plant, but also recovers the wastewater and rainwater on the ground of the plant, thereby realizing the comprehensive utilization of 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 forklifts, sand forklifts and the like in the factory area of the premixed concrete mixing station, and is used for recycling and reusing the rain and the waste water in the production and management waste water and the area.

Drawings

FIG. 1 is an overall plan view of a plant waste water resource utilization system of a premixed concrete mixing station of the invention;

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

FIG. 3 is a front cross-sectional view (A-A in FIG. 2) of a vehicle cleaning system for a ready-mixed concrete plant area according to the present invention;

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

FIG. 5 is a longitudinal sectional view (C-C direction in FIG. 2) of a precast concrete protective cover installed in a longitudinal pit of a vehicle cleaning system in a ready-mixed concrete plant area according to the present invention;

FIG. 6 is a schematic diagram of a water supply line of a water supply device of a vehicle cleaning system for a ready-mixed concrete plant area according to the present invention;

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

FIG. 8 is an overall configuration view of a sand filtration apparatus of the waste wet concrete recovery system according to the present invention;

FIG. 9 is a view showing a structure in which a sand filter screen of the waste wet concrete recovery system is integrated;

FIG. 10 is a diagram showing the sand filter screen of the waste wet concrete recovery system of the present invention separately rotating;

FIG. 11 is an overall structure view of the sand screening device of the waste wet concrete recovery system according to the present invention;

FIG. 12 is an overall plan view of a multi-stage sedimentation basin system according to the present invention;

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

FIG. 14 is a structural view of a sand setting device of a multistage sedimentation tank system according to the present invention;

FIG. 15 is a view showing the construction of a fine sand filtering apparatus in a multistage sedimentation tank system according to the present invention;

FIG. 16 is a schematic view of a multistage sedimentation tank system filtration apparatus of the present invention;

FIG. 17 is a structural view of a slide rail arranged on the wall of a sedimentation tank in the multistage sedimentation tank system according to the invention;

FIG. 18 is a schematic view of a multistage sedimentation tank system according to the present invention with a rotary folding steel deck covering the sedimentation tank;

FIG. 19 is a schematic view of the unfolding structure of the rotary folding steel cover plate of the multistage sedimentation tank system according to the present invention;

FIG. 20 is a plan view of the whole plant rain sewage recovery system of the present invention;

FIG. 21 is a sectional view of the novel draining kerbstone filter tank in connection with the ground in the field (sectional view D-D in FIG. 20);

FIG. 22 is a view showing the connection structure of the novel drainage kerbstone filter tank and the catch basin;

FIG. 23 is a structural view of the novel sludge filter screen of the present invention;

FIG. 24 is a view of the junction of the irrigation drains and rain drains of the present invention (section E-E in FIG. 20);

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

fig. 26 is a working flow chart of the plant waste water resource utilization system of the premixed concrete mixing station.

Description of the reference numerals: 1-vehicle washing system; 2-a waste wet concrete recovery system; 3-a multistage sedimentation basin system; 4-a plant rain sewage recovery system; 5, flushing a drainage ditch; 6-a sewage interception grid; 7-a bottom surface transverse water inlet pipe; 8-bottom surface spray head; 9-bottom surface longitudinal water inlet pipe; 10-prefabricating a concrete protective cover; 11-side water inlet pipe; 12-side shower; 13-blowing means; 14-side baffles; 15-ramming plain soil; 16-a limiting clamping block; 17-a water pipe support frame; 18-a sewage interception grid support frame; 19-sewage level height line; 20-a garbage protective net; 21-square steel tube vertical rods; 22-fixed plate; 23-concrete foundation; 24-round steel pipes; 25-an electric wire; 26-an operation box; 27-an inductor; 28-lifting lugs; 29-longitudinal pits; 30-branch water inlet pipes; 31-a main water inlet pipe; 32-a clean water tank; 33-a sewage pump; 34-stainless steel filtering tank; 35-sandstone filtration net; 36-first stage drain pipe; 37-sandstone sliding groove; 38-sand separator; 39-sand sliding grooves; 40-a gravel sliding groove; 41-a sand collection box; 42-a rubble collection box; 43-inner wall of filtering pool; 44-connecting shaft; 45-binding wires; 46-a trough end baffle; 47-a leg; 48-a feed hopper; 49-steel support platform; 50-a grit chamber; 51-fine grit filter means; 52-a secondary drainage pipe; 53-the wall of the settling tank; 54-a first-stage sedimentation tank; 55-water channel; 56-a secondary sedimentation tank; 57-a filtration tank; 58-a filtration device; 59-three-stage sedimentation tanks; 60-water outlet of the filtering device; 61-water replenishing pipe; 62-a handle; 63-inner wall of the filtering device; 64-Filter head plate; 65-a filter screen; 66-fine permeable cloth; 67-a reinforcement cage; 68-steel wire safety net; 69-breaking stone; 70-a slide rail; 71-rotating the folding steel cover plate; 72-left cover plate; 73-right cover plate; 74-rotating connecting shaft; 75-a sliding wheel; 76-field ground; 77-drainage type kerbstone filter tank; 78-rain gutters; 79-catch basin easy to clean; 80-high wall of filtering groove; 81-low wall of filter tank; 82-high wall drain holes; 83-low wall drain holes; 84-a filter tank; 85-L type kerbstone filter tank cover plate; 86-hooking; 87-sludge screen.

Detailed Description

The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that modifications can be made to the invention by a person skilled in the art without departing from the principle of the invention, and these modifications and modifications also fall within the scope of the claims of the invention.

As an example, as shown in fig. 1 to 26, the plant area wastewater resource utilization system of the ready-mixed concrete mixing station is composed of four parts, namely a vehicle cleaning system 1, a waste wet concrete recovery system 2, a multistage sedimentation tank system 3 and a plant area rainwater and sewage recovery system 4, wherein the vehicle cleaning system 1 cleans transport vehicles and concrete tank trucks in a car washing plant, the cleaning sewage and sewage is discharged to the waste wet concrete recovery system 2 through a flushing drainage ditch 5, meanwhile, the plant rain sewage recovery system 4 collects rain sewage in the plant and pumps the rain sewage to the waste wet concrete recovery system 2, the waste wet concrete recovery system 2 filters sand and stone in the sewage, sand and stone are separated by a sand-stone separator and sent to a raw material field for recycling, the filtered wastewater is discharged into a multistage sedimentation tank system 3 for sedimentation, and the settled clean water is used for production and cleaning machinery for recycling.

As shown in figure 2, the factory vehicle cleaning system mainly comprises a drainage ditch sewage interception device, a bottom surface flushing device, a side surface blowing device, an operation induction collecting device, a water supply device and the like.

As shown in fig. 2-3, the drainage ditch sewage interception device comprises a flushing drainage ditch 5, a sewage interception bar 6, limiting clamp blocks 16, a sewage interception bar support frame 18, a sewage level 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 arranged at the bottom of the flushing drainage ditch 5 at uniform intervals, the sewage interception bar 6 is placed in the limiting clamp blocks 16, the sewage interception bar support frame 18 is arranged between the adjacent sewage interception bars 6 to enhance the overall stability of the device, a layer of garbage protection net 20 is laid on the top of the sewage interception bar 6, and the sewage level height line 19 is lower than the top of the sewage interception bar 6 by a certain distance.

As shown in fig. 3 and 5, the bottom surface flushing device is composed of two parts, namely 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 support frame 17, a garbage protection net 20 and the like, the bottom surface transverse flushing device is supported in the flushing drainage ditch 5 through the water pipe support frame 17 by the bottom surface transverse water inlet pipe 7, the bottom surface transverse water inlet pipe 7 is highly positioned at the top of the garbage protection net 20, and a plurality of bottom surface spray heads 8 are uniformly arranged on the bottom surface transverse water inlet pipe 7 at intervals.

Furthermore, the bottom surface longitudinal flushing device comprises 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, a lifting lug 28, a longitudinal pit 29, a branch water inlet pipe 30 and the like, the bottom surface longitudinal flushing device is supported in the longitudinal pit 29 through the water pipe support frame 17 by the bottom surface longitudinal water inlet pipe 9, the longitudinal pit 29 is vertical to the flushing drainage ditch 5, two bottom surface longitudinal water inlet pipes 9 are arranged in the longitudinal pit 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 pipe 30; the top of the longitudinal pit 29 is provided with the precast concrete protective cover 10, the right center 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 the bottom surface spray heads 8 can wash the bottom of the concrete truck.

As shown in fig. 2 and 4, the side washing device comprises a side water inlet pipe 11, side nozzles 12, a side baffle plate 14, a water pipe support frame 17, a water inlet pipe 30 and the like, wherein the side water inlet pipe 11 is arranged up and down, the side water inlet pipe 11 is supported on the ground by the water pipe support frame 17, a plurality of side nozzles 12 are uniformly arranged on the side water inlet pipe 11 at intervals, the side baffle plate 14 is arranged outside the side water inlet pipe 11, and the side baffle plate 14 is used for preventing sewage from splashing outwards when washing.

Further, the side blowing device comprises a side water inlet pipe 11, a blowing device 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 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.

Further, the operation induction collecting device comprises a square steel pipe upright rod 21, a fixed board 22, an operation box 26, an inductor 27 and the like, the square steel pipe upright rod 21 is installed between the two middle air blowing devices 13 in a clearance mode, the square steel pipe upright rod 21 is fixed on the ground, the fixed board 22 is installed on the top of the square steel pipe upright rod 21, the operation box 26 and the inductor 27 are installed on the fixed board 22, the operation box 26 is used for controlling the water spraying quantity of a sprayer of the whole vehicle cleaning system and the air quantity of the air 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 air blowing devices to start working.

As shown in fig. 6, the water supply device comprises a bottom surface transverse water inlet pipe 7, a bottom surface spray head 8, a bottom surface longitudinal water inlet pipe 9, a lateral water inlet pipe 11, a lateral 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 the like, clean water in the clean water tank 32 is pumped up by the sewage pump 33 and is conveyed into the branch water inlet pipe 30 and the bottom surface transverse water inlet pipe 7 through the main water inlet pipe 31, the branch water inlet pipe 30 conveys the clean water into the bottom surface longitudinal water inlet pipe 9 and the lateral water inlet pipe 11, and the clean water is sprayed out through the bottom surface spray head 8 and the lateral spray head 12 to wash the concrete transport vehicle.

As shown in FIG. 7, the waste wet concrete recycling system comprises a flushing drainage ditch 5, a stainless steel filtering tank 34, a gravel filtering net 35, a primary drainage pipe 36, a gravel sliding groove 37, a gravel separator 38, a sand sliding groove 39, a gravel sliding groove 40, a sand collecting box 41, a gravel collecting box 42, a filtering tank inner wall 43 and the like, and comprises a gravel filtering device, a gravel sliding device and a gravel screening device. The sewage and wastewater with wet concrete in the flushing drainage ditch 5 flows into the sand filtering device and is filtered by the sand filtering device, the filtered sewage and wastewater flows into the first-level drain pipe 36, the filtered sand slides into the sand sliding device, and the sewage and wastewater enters the sand screening device through the sand sliding device to be separated.

As shown in fig. 8-fig. 10, the sandstone filtration device of the waste wet concrete recycling system mainly comprises a flushing drainage ditch 5, a stainless steel filtration tank 34, a sandstone filtration net 35, a primary drainage pipe 36, a filtration tank inner wall 43, a connecting shaft 44, binding wires 45 and other structures, wherein the filtration tank inner wall 43 is of a stainless steel structure, the sandstone filtration net 35 can filter sandstone in the wastewater, the sandstone is retained on the sandstone filtration net 35, and the wastewater flows into the primary drainage pipe 36; the sandstone filtration net 35 is composed of two blocks, the two blocks are bound into a whole through a binding wire 45, a connecting shaft 44 is arranged at the end part of each block, the connecting shaft 44 is fixed on the inner wall 43 of the filtering tank, the sandstone filtration net 35 can rotate around the connecting shaft 44, after the binding wire 45 is untied, the sandstone filtration net 35 is rotatably lapped on the sandstone sliding groove 37, and sandstone rolls into the sandstone sliding groove 37. The sandstone sliding device comprises a stainless steel filtering tank 34, a sandstone sliding groove 37, a groove end baffle 46, support legs 47, a feed hopper 48 and the like, wherein one end of the sandstone sliding groove 37 is arranged in the stainless steel filtering tank 34, the end baffle 46 is arranged at the port of the sandstone sliding groove, the other end of the sandstone sliding groove is connected with the feed hopper 48, the support legs 47 are arranged at the bottom of the sandstone sliding groove 37, so that the sandstone sliding groove 37 is inclined at an angle of 30 degrees, the high end of the sandstone sliding groove 37 is positioned in the stainless steel filtering tank 34, the low end of the sandstone sliding groove is positioned in the feed hopper 48, and sand and stone filtered by the sandstone filtering net 35 slide into the feed hopper 48 through the sandstone 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 gravel sliding groove 40, a sand collecting box 41, a gravel 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 and

gravel sliding grooves

39 and 40 are respectively arranged at the lower part of the sand and stone separator 38, the sand and

gravel sliding grooves

39 and 40 are respectively connected with the sand collecting box 41 and the gravel collecting box 42, sand and stone in the feed hopper 48 are separated out by 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 gravel collecting box 42 through the gravel sliding groove 40.

As shown in fig. 12 to 13, the multistage sedimentation tank system includes 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 sand filter 51, a secondary water discharge pipe 52, a sedimentation tank wall 53, a primary sedimentation tank 54, a water channel 55, a secondary sedimentation tank 56, a filter tank 57, a filter 58, a tertiary sedimentation tank 59, a filter outlet 60, a water replenishing pipe 61, a handle 62, a filter inner wall 63, a filter top plate 64, a filter screen 65, fine 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, etc., and is composed of a grit device, a multistage sedimentation tank, a filter, a clean water storage device, a sedimentation tank covering device, etc. The sewage and wastewater in the first-stage drain pipe 36 flows into the sand settling device to be filtered by fine sand grains, the sewage and wastewater after being filtered by the fine sand grains enters a multistage sedimentation tank through the second-stage drain pipe 52 and the ditch 55 to be settled, and invisible grains and floccules are filtered by the filtering device and finally flow into a clear water storage device to be stored for production, cleaning and repeated use.

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

As shown in fig. 13, the structure of the multistage sedimentation tank system includes a secondary drainage pipe 52, a sedimentation tank wall 53, a primary sedimentation tank 54, a water channel 55, a secondary sedimentation tank 56, a filter tank 57, a filter 58, a tertiary sedimentation tank 59, etc., the sewage and wastewater from which fine sand particles are filtered 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 prefabricated concrete structure, the water channel 55 is arranged on the top of the tank wall between the primary sedimentation tank 54 and the secondary sedimentation tank 56, the water channel 55 is also arranged on the top of the tank wall between the secondary sedimentation tank 56 and the filter tank 57, and the filter 58 is installed between the filter tank 57 and the tertiary sedimentation tank 59; the sewage that the second grade drain pipe 52 flowed in carries out the primary sedimentation through the one-level sedimentation tank 54, after the one-level sedimentation tank 54 water is full, gets into second grade sedimentation tank 56 through the ditch 55 and carries out the secondary sedimentation, after the second grade sedimentation tank 56 water is full, gets into in the filtering ponds 57 through the ditch 55, and the interior filter equipment 58 of filtering ponds 57 filters granule, the floccule that the naked eye is invisible, gets into in the tertiary sedimentation tank 59 and carries out final sedimentation when the filtering ponds 57 water 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 permeable cloth 66, a steel reinforcement cage 67, a steel wire safety net 68, broken stones 69 and the like, wherein the filtering device 58 is installed on the tank wall in the filtering tank 57, the framework structure of the filtering device 58 adopts the steel reinforcement cage 67 to bind the steel wire safety net 68, a cavity surrounded by the steel wire safety net 68 is filled with the broken stones 69, the fine permeable cloth 66 is wrapped outside the steel reinforcement cage 67, and the filtering device water outlet 60 is installed at the filtering device 58; the sewage in the filtering tank 57 can be filtered by the filtering device 58 to remove invisible particles and floccules, and the filtered sewage flows to the third-stage sedimentation tank 59 through the water outlet 60 of the filtering device.

As shown in fig. 13, after the water in the third-stage sedimentation tank 59 of the multi-stage sedimentation tank system is full, the water 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 replenishing pipe 61 and the like, the sewage pump 33 is arranged in the clean water tank 32, the sewage in the clean water tank 32 can be conveyed to a production and flushing vehicle for water use through the main water inlet pipe 31 by the sewage pump 33, the water replenishing pipe 61 is arranged in the clean water tank 32, and when the water amount in the clean water tank 32 is insufficient, water can be filled into the clean water tank 32 through the water replenishing pipe 61.

As shown in fig. 17-fig. 19, the multistage sedimentation tank system with a rotary folding steel cover plate covers the sedimentation tank, and comprises a sedimentation tank wall 53, 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 sliding wheel 75 and the like, wherein the slide rail 70 is installed on the sedimentation tank wall 53, the rotary folding steel cover plate 71 is formed by splicing the left cover plate 72 and the right cover plate 73 through the rotary connecting shaft 74 and can rotate around the rotary connecting shaft 74, a plurality of sliding wheels 75 are installed on the left cover plate 72 and the right cover plate 73, the sliding wheels 75 are matched with the slide rail 70, the sliding wheels 75 can slide on the slide rail 70, and the rotary folding steel cover plate 71 can completely seal the sedimentation tank after the left cover plate 72 and the right cover plate 73 are completely unfolded.

As shown in FIG. 20, the rain sewage recovery system for plant area comprises a flushing drainage ditch 5, a sewage interception bar 6, a soil compacting 15, a garbage protection net 20, a field area ground 76, a drainage type kerb filtering tank 77, a rain drainage ditch 78, an easy-to-clean rain water well 79, a filtering tank high wall 80, a filtering tank low wall 81, a high wall drainage hole 82, a low wall drainage hole 83, a filtering tank 84, an L-shaped kerb filtering tank cover plate 85, a hook 86, a sludge filtering screen 87 and the like, wherein the drainage type kerb filtering tank 77 is arranged around the field area ground 76, the drainage type kerb filtering tank 77 is provided with the easy-to-clean rain water well 79 at four corners of the plant area, the rain drainage ditch 78 is arranged between the easy-to-clean rain water well 79 and the drainage type kerb filtering tank 77, the flushing drainage ditch 5 is connected with the rain drainage ditch 78, rain water collected in the easy-to-clean rain water well 79 is pumped to a purification system by a water pump for separation and precipitation, so as to realize sand separation and precipitation, Recycling the stone and water.

As shown in fig. 21, the drainage-type kerb filtering tank 77 is composed of a filtering tank high wall 80, a filtering tank low wall 81, a high wall drainage hole 82, a low wall drainage hole 83, a filtering tank 84, an L-type kerb filtering tank cover plate 85 and the like, wherein the filtering tank high wall 80 is uniformly provided with the high wall drainage holes 82, the filtering tank low wall 81 is uniformly provided with the low wall drainage holes 83, the outside of the filtering tank high wall 80 is filled with plain soil ramming 15, rainwater outside the filtering tank high wall 80 enters the filtering tank 84 through the high wall drainage holes 82, the inside of the filtering tank low wall 81 is poured with ground 76 concrete, rainwater and cleaning wastewater in the field 76 enters the filtering tank 84 through the low wall drainage holes 83, and the L-type kerb filtering tank cover plate 85 covers the drainage-type kerb filtering tank 77.

As shown in fig. 22, the drainage type kerbstone 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 kerbstone filter tank 77, the drainage type kerbstone filter tank 77 is placed on the rainwater drainage ditch 78, the size of the rainwater drainage ditch 78 is larger than that of the drainage type kerbstone filter tank 77, and the rainwater drainage ditch 78 is embedded into the rainwater well easy to clean 79. Rainwater and sewage collected in the rainwater well 79 easy to clean are pumped to a purification system through a water pump for separation and precipitation, so that sand, stone and water are recycled.

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

As shown in FIG. 24, the connection structure of the irrigation drains and the rain gutters (section E-E in FIG. 20) is shown, the irrigation drains 5 are connected to the rain gutters 78, the sewage interception fence 6 is provided in the irrigation drains 5, and the garbage protection net 20 is laid on the top.

As shown in fig. 25, the floor 76 of the field is a slope of a splayed shape, and is inclined to both sides with the drain 5 as a center line, with an inclination angle of 5%.

As shown in fig. 26, the work flow chart of the plant waste water resource utilization system of the premixed concrete mixing station also provides a plant waste water resource utilization system of the premixed concrete mixing station and a working method thereof, and is characterized by comprising the following steps:

(1) the vehicle drives into the cleaning parking space: 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 protective cover 10 at the top of the longitudinal pit groove 29 is lifted, and a transport vehicle and a concrete tank truck in the car wash park enter the cleaning parking space from the entrance of the car wash park.

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

(3) Draining the ground in the field: when vehicle cleaning system carries out water spray cleaning or heavy rain to the vehicle, a large amount of sewage flows to drainage formula curb filter-tank 77 in the field ground 76 to finally assemble easy-to-clean rainwater well 79, silt filter screen 87 carries out the prefilter to debris such as rain sewage rubbish, leaf in the easy-to-clean rainwater well 79.

(4) Pumping and discharging sewage to a stainless steel filter tank: the sewage filtered in the rainwater well 79 easy to clean is pumped to the stainless steel filtering tank 34 through the sewage pump 33, meanwhile, a large amount of sewage in the flushing drainage ditch 5 of the vehicle cleaning system flows into the stainless steel filtering tank 34 after being filtered layer by layer through the plurality of sewage interception bars 6, the sand filtering device of the stainless steel filtering tank 34 filters the sewage, the filtered sewage and wastewater flows into the grit chamber 50, and the filtered sand and stones slide into the sand-stone separator 38 through the sand-stone sliding device.

(5) Sand and stone separation: and starting the sand-stone separator 38 to separate sand and stone, wherein the sand slides into the sand collection box 41 through the sand sliding groove 39, the stone slides into the broken stone collection box 42 through the broken stone sliding groove 40, and the sand and the stone in the sand collection box 41 and the broken stone collection box 42 are conveyed to a raw material yard to be stacked for recycling.

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

(7) Spreading a steel cover plate of the sedimentation tank: the wall 53 of the sedimentation tank is provided with a slide rail 70, a rotary folding type steel cover plate 71 is customized in advance in a factory according to the size of each sedimentation tank, the rotary folding type steel cover plate 71 is hung on the wall 53 of the sedimentation tank, a slide wheel 75 of the rotary folding type steel cover plate is embedded into the slide rail 70, and the rotary folding type steel cover plate 71 is rotated and unfolded to fully cover the sedimentation tank.

(8) Primary and secondary sewage precipitation: the sewage flowing in from the secondary water discharge pipe 52 is primarily precipitated through the primary sedimentation tank 54, enters the secondary sedimentation tank 56 through the water channel 55 for secondary sedimentation after the primary sedimentation tank 54 is full of water, 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 sewage enters the filtering tank 57, invisible particles and floccules of the sewage are filtered by the filtering device 58, and the filtered sewage flows to the third-stage sedimentation tank 59 through the water outlet 60 of the filtering device for final sedimentation.

(10) Water storage of the clean water tank: the water in the third-level sedimentation tank 59 flows into the clean water tank 32 to be stored after being full, the sewage pump 33 is arranged in the clean water tank 32, the sewage pump 33 can convey the clean water in the clean water tank 32 to production and washing vehicles through the main water inlet pipe 31 to use the water, the water replenishing pipe 61 is arranged in the clean water tank 32, and when the water amount in the clean water tank 32 is insufficient, the water is replenished into the clean water tank 32 through the water replenishing pipe 61.

Claims

1. Premixed concrete mixing station factory waste water resource utilization system, its 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 plant rain sewage recovery system (4); the vehicle cleaning system (1) consists of a drainage ditch sewage interception device, a bottom surface flushing device, a side surface blowing device, an operation induction set 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 drainage ditch sewage interception device consists of a flushing drainage ditch (5), a sewage interception grid (6), a limiting clamp block (16), a sewage interception grid 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 intervals, and sewage intercepting grids (6) are arranged in the limiting clamping blocks (16); a sewage interception grid support frame (18) is arranged between the adjacent sewage interception grids (6), and a layer of garbage protective net (20) is laid on the top of each sewage 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 protective 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), a lifting lug (28), a longitudinal pit groove (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 a water pipe support frame (17), a plurality of side nozzles (12) are arranged on the side water inlet pipe (11) at uniform intervals, and a side baffle (14) is arranged on the outer side of the side water inlet pipe (11);

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

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

2. The ready mixed concrete mixing station factory wastewater resource utilization system according to claim 1, characterized in that the sandstone filtration device, the sandstone sliding device and the sandstone screening device in the waste wet concrete recovery system (2) are specifically as follows:

the sand and stone filtering device consists of a flushing drainage ditch (5), a stainless steel filtering tank (34), a sand and stone filtering net (35), a primary drainage pipe (36), a filtering tank inner wall (43), a connecting shaft (44) and binding wires (45); the stainless steel filter tank (34) is connected with the flushing drainage ditch (5); the sandstone filtration net (35) is arranged in the stainless steel filtration tank (34); the primary drainage pipe (36) is connected with a drainage port of the stainless steel filtering tank (34); the sandstone filter screen (35) is composed of two blocks, and the two blocks of the sandstone filter screen (35) are bound into a whole by binding wires (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 sandstone filter screen (35) is rotationally connected with the connecting shaft (44); when the binding wire (45) is not bound with two blocks of the sandstone filter screen (35), the two blocks of the sandstone filter screen (35) are rotatably connected with the sandstone sliding groove (37);

the sandstone sliding device comprises a stainless steel filter tank (34), a sandstone sliding groove (37), a groove end baffle (46), support legs (47) and a feed hopper (48); one end of the sandstone sliding groove (37) is arranged in the stainless steel filtering 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 slide groove (37) is provided with a support leg (47), and the sand slide groove (37) has a certain inclination angle; the lower end of the sandstone sliding groove (37) is positioned in the stainless steel filtering tank (34), and the higher end of the sandstone sliding groove (37) is positioned in the feed hopper (48);

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

3. The ready mixed concrete mixing station factory wastewater resource utilization system according to claim 1, characterized in that in the multistage sedimentation tank system (3), the sand setting device, the multistage sedimentation tank, the filtering device, the clear water storage device and the sedimentation tank covering device are as follows:

the sand setting device comprises a primary water drainage pipe (36), a sand setting tank (50), a fine sand filtering device (51) and a secondary water drainage 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 filtering net (65); the inner wall (63) of the filtering device and the top plate (64) of the filtering device are spliced into a whole by welding; the handle (62) is welded on the 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 the top plate (64) of the filtering device is placed on the chamber wall of the grit chamber (50);

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

the framework of the filtering device (58) is formed by a steel reinforcement cage (67) and a steel wire binding safety net (68); a cavity surrounded by the steel wire safety net (68) is filled with gravels (69), and the outside of the reinforcement cage (67) is wrapped with fine permeable cloth (66); 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 third-level 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 replenishing 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 is connected with the main water inlet pipe (31), and the main water inlet pipe (31) extends to the position of the vehicle to be washed; a water replenishing pipe (61) is arranged in the clean water tank (32);

the sedimentation tank covering device comprises a sedimentation tank wall (53), 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) and a sliding wheel (75); a slide rail (70) is arranged on the wall (53) of the sedimentation tank; 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 connected with the sliding rail (70) in a sliding way; 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 connected with the sliding rail (70) in a sliding way.

4. The system for recycling factory wastewater of the ready-mixed concrete mixing station according to claim 1, wherein the factory rain sewage recovery system comprises a flushing drainage ditch (5), a sewage interception grid (6), a plain soil tamping (15), a garbage protection net (20), a field ground (76), a drainage type kerb filtering tank (77), a rainwater drainage ditch (78), a rainwater well (79) easy to clean, a filtering tank high wall (80), a filtering tank short wall (81), a high wall drainage hole (82), a short wall drainage hole (83), a filtering tank (84), an L-shaped kerb filtering tank cover plate (85), a hook (86) and a sludge filtering net (87);

drainage type kerbstone filter tanks (77) are arranged on the periphery of the field ground (76), and each drainage type kerbstone filter tank (77) consists 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) and an L-shaped kerbstone filter tank cover plate (85); high-wall drain holes (82) are uniformly formed in the high wall (80) of the filtering tank; the short wall (81) of the filter tank is uniformly provided with short wall drain holes (83); the outside of the high wall (80) of the filtering tank is filled with plain soil and tamped (15); pouring a field ground (76) on the inner side of the low wall (81) of the filter tank; the L-shaped kerbstone filter tank cover plate (85) covers the drainage type kerbstone filter tank (77);

rainwater wells (79) easy to clean are arranged at four corners of a plant area, rainwater drainage ditches (78) are arranged between the rainwater wells (79) easy to clean and the drainage type kerbstone filter tanks (77), the drainage type kerbstone filter tanks (77) are placed on the rainwater drainage ditches (78), and the size of the interior of each rainwater drainage ditch (78) is larger than that of each drainage type kerbstone filter tank (77); the flushing drainage ditch (5) is connected with a rainwater drainage ditch (78); a sludge filter screen (87) is arranged in the catch basin (79) easy to clean; the rainwater drainage ditch (78) is embedded into a 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 area is a splayed slope which is inclined towards two sides by taking the washing drainage ditch (5) as a central line; a sewage interception fence (6) is arranged in the flushing drainage ditch (5), and a garbage protective net (20) is paved at the top of the flushing drainage ditch (5).

5. The system for recycling factory wastewater of the ready-mixed concrete mixing station according to claim 1, wherein the bottom surface washing device, the side blowing device and the water supply device in the vehicle cleaning system (1) are specifically:

in the bottom surface washing device, a bottom surface transverse water inlet pipe (7) is positioned at the top of the garbage protective net (20), the bottom surface transverse water inlet pipe (7) is supported in a washing drainage ditch (5) by a water pipe support frame (17), and a plurality of bottom surface spray heads (8) are arranged on the bottom surface transverse water inlet pipe (7) at intervals and at uniform 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 groove (29) through a 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 even 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 slot (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 pipe (24) is arranged in a slit between the side water inlet pipe (11) and the side baffle (14), and the circular steel pipe (24) is installed on a concrete foundation (23); the electric wire (25) penetrates through the round steel pipe (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 surface transverse water inlet pipe (7), a bottom surface spray head (8), a bottom surface 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 surface 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 side water inlet pipe (11) is connected with the side spray head (12); two rows of water inlet pipelines are arranged up and down on the side water inlet pipe (11).

6. The ready-mixed concrete mixing station plant wastewater resource utilization system according to any one of claims 1 to 5, 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 washing drainage ditch (5) and the sedimentation tank wall (53) are both of prefabricated concrete structures; the sand sliding groove (37) and the support leg (47) form an inclined angle of (30) °; the inclination angle of the field ground (76) is 5%.

7. An operating method of the ready mixed concrete mixing station factory wastewater resource utilization system according to any one of claims 1 to 6, which is characterized by comprising the following steps:

step 1, driving a vehicle into a cleaning parking space;

step 2, the vehicle cleaning system carries out vehicle cleaning and blow-drying: a sensor (27) on a fixing plate (22) on the inner side of the side baffle (14) recognizes and senses the vehicle entering, relevant information is transmitted to an operation box (26), and the operation box (26) controls the opening of a valve of a water inlet pipe; 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 and washing are finished, the operation box (26) controls the air blowing device (13) to blow air, and the vehicle drives away from the cleaning parking space after the air blowing;

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

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

step 5, sand-stone separation: starting a sand-stone separator (38), separating sand from stone, sliding the sand into a sand collection box (41) through a sand sliding groove (39), and sliding the stone into a gravel collection box (42) through a gravel sliding groove (40); conveying the sand and the stones in the sand collecting box (41) and the broken stone collecting box (42) to a raw material yard for stacking for recycling;

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

step 7, spreading a steel cover plate of the sedimentation tank: installing a slide rail (70) on the wall (53) of the sedimentation tank, customizing a rotary folding type steel cover plate (71) in a factory in advance according to the size of each stage of sedimentation tank, hanging the rotary folding type steel cover plate (71) on the wall (53) of the sedimentation tank, embedding a sliding wheel (75) of the rotary folding type steel cover plate (71) into the slide rail (70), and rotatably unfolding the rotary folding type steel cover plate (71) to fully cover the sedimentation tank;

step 8, primary and secondary sewage precipitation: the sewage flowing in from the secondary drainage pipe (52) is subjected to primary sedimentation through a primary sedimentation tank (54); when the primary sedimentation tank (54) is full of water, the water enters a secondary sedimentation tank (56) through a water channel (55) for secondary sedimentation; when the secondary sedimentation tank (56) is full of water, the water enters the filtering tank (57) through the water channel (55);

step 9, filtering in a filtering tank;

and step 10, storing water in a clean water tank.

8. The working method of the ready-mixed concrete mixing station plant wastewater resource utilization system according to claim 7, characterized in that the step 1 specifically comprises: 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) and the side water inlet pipe (11) through the main water inlet pipe (31); hanging the precast concrete protective cover (10) at the top of the longitudinal pit slot (29); a transport vehicle and a concrete tank truck in the car washing yard enter a washing parking lot from an entrance of the car washing yard; the step 3 specifically comprises the following steps: when the vehicle cleaning system is used for cleaning a vehicle by spraying water or raining, rainwater on the outer side of a high wall (80) of the filtering tank enters the filtering tank (84) through a high wall drainage hole (82), and rainwater and cleaning wastewater on the ground (76) of the field area enter the filtering tank (84) through a low wall drainage hole (83); a large amount of sewage flows to drainage formula curb filter-tank (77) in field ground (76) to finally assemble rainwater well (79) of easily decontaminating, silt filter screen (87) carries out prefiltering to rain sewage rubbish, leaf in rainwater well (79) of easily decontaminating.

9. The working method of the ready mixed concrete mixing station plant wastewater resource utilization system according to claim 8, characterized in that the step 9 is specifically: after sewage enters the filtering tank (57), invisible particles and floccules of the sewage are filtered out by the filtering device (58), and the filtered sewage flows to the third-stage sedimentation tank (59) through a water outlet (60) of the filtering device for final sedimentation.

10. The working method of the ready-mixed concrete mixing station plant wastewater resource utilization system according to claim 9, characterized in that the step 10 is specifically: after the water in the third-stage sedimentation tank (59) is full, the water flows into a clean water tank (32) for storage, and is repeatedly used by production and cleaning machines; a sewage pump (33) is arranged in the clean water tank (32), clean water in the clean water tank (32) is conveyed to a vehicle producing and washing position through a main water inlet pipe (31) by the sewage pump (33) for water use, a water replenishing pipe (61) is arranged in the clean water tank (32), and when the water amount in the clean water tank (32) is insufficient, water is replenished into the clean water tank (32) through the water replenishing pipe (61).