CN205328683U - Waste water treatment system of concrete mixing plant - Google Patents

Abstract

The utility model discloses a wastewater treatment system for a concrete mixing station, belongs to the technical field of wastewater treatment, and aims to provide a wastewater treatment system for a concrete mixing station for recycling wastewater and waste materials, comprising a water collecting tank, wherein the water collecting tank is provided with at least one ground sewage inlet, a gravel screening conveyor is provided above the water collecting tank, the gravel screening conveyor is provided with a stone outlet, the stone outlet is directly opposite to a first belt conveyor, the first belt conveyor is connected to a gravel yard, a feeding pipe is provided at the bottom of the water collecting tank, the feeding pipe is connected to a spiral sand washing machine, a sand outlet pipe is provided at the upper end of the spiral sand washing machine, the sand outlet pipe is connected to a second belt conveyor, the second belt conveyor is directly opposite to the sand yard, the spiral sand washing machine is provided with a water outlet pipe, the water outlet pipe is connected to a sewage pipe, the sewage pipe is sequentially connected to a sedimentation tank and a clarification tank, and the clarification tank is connected to a pipeline.

Description

Concrete mixing station wastewater treatment system

technical field

The utility model relates to the technical field of waste water treatment, in particular to a waste water treatment system of a concrete mixing station.

Background technique

With the rapid development of the construction industry, concrete production enterprises have also developed rapidly, and the number of concrete mixing stations is increasing day by day, and the concrete mixing stations are faced with the pressure of cleaning the waste water and slag of the mixer truck and washing the scattered concrete on the ground every day. The direct discharge of wastewater from concrete mixing plants will cause great pollution to the environment. At the same time, the concrete wastewater contains a large amount of available sand and water, which is another waste of resources.

The traditional method adopts a sedimentation treatment or a sand separator to treat the wastewater from cleaning the concrete mixer truck to achieve the purpose of wastewater utilization. The above two methods have problems such as incomplete separation of sand and gravel in waste water and low reuse rate of sand and gravel. The existing technology discloses many similar technical solutions, such as the Chinese utility model patent "Concrete Production Wastewater and Rainwater Recycling System" with the patent number ZL201310309296.0 (the authorized announcement number is CN103410193B). The sump below the plane is equipped with a stirring paddle and a water pump, and the stirred wastewater is pumped to the mixing building for reuse. A similar patent number is ZL201520480045.3 Chinese utility model patent "A Concrete Wastewater Treatment System" (authorized announcement number is CN204874114U). The second settling tank, the regulating tank and the water storage tank, the sand and water in the concrete wastewater generated by the cleaning mixer truck are better separated through the screw separator, and the separated sand cake is recycled through the mud cake pressing device, and the first sedimentation pool, the second production sedimentation tank, and the regulating tank realize the treatment of the wastewater separated by the spiral separator.

However, none of the above-mentioned published documents provides a comprehensive solution for the concrete mixing station to clean the waste water residue of the mixer truck and flush the concrete scattered on the ground, and the stones and sand in the concrete waste water are not completely separated.

Utility model content

The technical problem to be solved by the utility model is to provide a waste water utilization system for treating the waste water generated by cleaning the mixer truck waste residue in the concrete mixing plant and washing the ground scattered concrete in view of the above-mentioned technical status, and to provide a waste water utilization system that completely removes the sand and gravel in the above waste water. Separation technology scheme.

The technical scheme adopted by the utility model to solve the above-mentioned problems is: the waste water treatment system of the concrete mixing station includes a sump, the sump is provided with no less than one ground sewage inlet, and a gravel screening conveyor is arranged above the sump , the stone screening conveyor is provided with a stone outlet, the stone outlet is facing the first belt conveyor, the first belt conveyor is connected with the stone yard, and the bottom of the sump is provided with a feeding pipe, and the conveying The material pipe is connected with the spiral sand washing machine, and the upper end of the spiral sand washing machine is provided with a sand discharge pipe, and the sand discharge pipe is connected with the second belt conveyor, and the second belt conveyor is facing the sand storage yard. The spiral sand washing machine is provided with an outlet pipe, and the outlet pipe is connected to a sewage pipe, and the sewage pipe is connected to a sedimentation tank and a clarification tank in turn, and the clarification tank is connected to a pipeline.

Preferably, the ground sewage inlet is connected to the sewage channel of the concrete mixing station.

Preferably, a sediment pump and an agitator are arranged in the sump.

Preferably, the gravel screening conveyor is fixed above the sump by a bracket, and the gravel screening conveyor is provided with a motor.

Compared with the prior art, the utility model has the advantages that: the sump is provided with a ground sewage inlet connected to the sewage channel of the concrete mixing plant, which can effectively collect the waste water produced by the concrete mixing plant for washing the ground, and can also collect rainwater; The stone screening conveyor screens the stones in the waste water of the concrete mixing plant and conveys them to the stone yard by the first belt conveyor. The spiral sand washing machine separates the sand and water in the waste water. The second The second belt conveyor transports the sand to the sand storage yard, and the sewage separated by the spiral sand washing machine passes through the sedimentation tank and the clarification tank to obtain clean water. The waste water treatment system of the concrete mixing plant has the characteristics of reasonable design, effective separation of stones, sand, water, waste water and slag in the waste water of the concrete mixing plant for recycling.

Description of drawings

Fig. 1 is a top view structural diagram of the wastewater treatment system of the concrete mixing plant in the embodiment of the utility model.

Fig. 2 is a schematic diagram of the structure of the sump and the gravel screening conveyor in Fig. 1 .

The reference signs are: 1—water collection tank, 11—agitator, 12—sediment pump, 13—surface sewage inlet, 14—feeding pipe, 2—stone screening conveyor, 21—motor, 22—support, 23—Stone outlet, 3—First belt conveyor, 4—Stone storage yard, 5—Spiral sand washing machine, 51—Sand outlet pipe, 52—Water outlet pipe, 6—Second belt conveyor, 7—Sand storage yard, 8—sewage pipe, 9—sedimentation tank, 10—clarification tank.

detailed description

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the wastewater treatment system of the concrete mixing plant in this embodiment includes a sump 1, and the purpose of collecting the ground sewage of the concrete mixing plant is achieved by setting no less than one surface sewage inlet 13 in the sump 1. A stone screening conveyor 2 is arranged above the sump 1, through which the stones in the waste water are first separated, and the stone screening conveyor 2 is provided with a stone outlet 23, which faces the first Belt conveyor 3, the first belt conveyor 3 is connected to 4 fields of gravel piles, and the bottom of the sump 1 in the utility model is provided with a feeding pipe 14, and the feeding pipe 14 is connected with the spiral sand washing machine 5. The sand washing machine 5 separates the sand and water in the waste water. The upper end of the spiral sand washing machine 5 is provided with a sand outlet pipe 51. The sand outlet pipe 51 is connected with the second belt conveyor 6, and the second belt conveyor 6 is facing the sand pile. field 7, the spiral sand washing machine is provided with an outlet pipe 52, the outlet pipe 52 is connected to the sewage pipe 8, and the sewage pipe 8 is connected to the sedimentation tank 9 and the clarification tank 10 in turn, and the clarification tank 10 is connected to the pipeline, and the clean water is used for concrete production.

Further, the surface sewage inlet 13 is connected with the sewage channel of the concrete mixing plant.

Further, the agitator 13 is set in the sump 1 of the utility model to stir the sand-containing muddy water from which the stones have been separated, and is pumped by the sediment pump 12 to the spiral sand washing machine 5 for separation of sand and water.

Further, the gravel screening conveyor 2 is fixed above the sump 1 by a bracket 22 , and the gravel screening conveyor 2 is provided with a motor 21 to provide kinetic energy for the gravel screening conveyor 2 .

Claims (4)

1. concrete mixing plant Waste Water Treatment, it is characterized in that: include collecting-tank, described collecting-tank is provided with no less than a ground sewage import, described collecting-tank is provided above stone separator conveyer, described stone separator conveyer is provided with stone outlet hole, described stone outlet hole is just to the first belt feeder, described first belt feeder is connected with stone stockyard, it is provided with conveying pipeline bottom described collecting-tank, described conveying pipeline is connected with spiral sand washing machine, described spiral sand washing machine upper end is provided with out sandpipe, described go out sandpipe and the second belt feeder be connected, described second belt feeder is just to sand stockyard, described spiral sand washing machine is provided with outlet pipe, described outlet pipe is connected with soil pipe, described soil pipe is sequentially connected with sedimentation tank, depositing reservoir, described depositing reservoir connecting line。

2. concrete mixing plant Waste Water Treatment according to claim 1, it is characterised in that: it is provided with shell pump and agitator in described collecting-tank。

3. concrete mixing plant Waste Water Treatment according to claim 1, it is characterised in that: described ground sewage import is connected with concrete mixing plant sewer。

4. concrete mixing plant Waste Water Treatment according to claim 1, it is characterised in that: described stone separator conveyer is fixed on above collecting-tank by support, and described stone separator conveyer is provided with motor。