CN101343100A - Duplex treatment device for building construction wastewater - Google Patents

Abstract

The invention discloses a dual treatment device for construction waste water, comprising a reaction precipitation device, the reaction precipitation device includes a reactor and a sedimentation tank, the outlet of the reacted waste water of the reactor is connected with the inlet of the reaction waste water of the sedimentation tank, and the precipitation The pool is provided with a sludge discharge port and a clear water discharge port. The reaction and precipitation of the waste water in the present invention are carried out in different containers, which can solve the dynamic contradiction between the reaction and precipitation of the waste water, can speed up the flow rate of the waste water, and improve the treatment efficiency of the construction waste water , reduce the treatment cost, and the operation is simple and the process is smooth; the inner wall of the pipeline is equipped with a spiral piece, which uses the principle of fluid dynamics, and compared with the mixing blade of the prior art, the fluid resistance is greatly reduced, and the purpose of accelerating the mixing of medicine and wastewater is achieved; The inlet pipeline enters the reactor along the tangential direction, and the fluid with a certain speed rotates along the inner wall of the reactor to accelerate the mixed reaction of medicine and wastewater and improve the treatment efficiency of wastewater.

Description

Duplex treatment device for building construction wastewater

technical field

The invention relates to a waste water treatment device, in particular to a dual treatment device for building construction waste water.

Background technique

In construction sites such as tunnel engineering, civil engineering, underground engineering, mining sites, concrete mixing plants, sand and gravel yards, and construction-related processes, a large amount of construction site wastewater will be generated, and the wastewater often contains a large amount of sediment and gravel. Pollutants such as petroleum and petroleum, if directly discharged into rivers or surface water, will cause river silting and water pollution. Traditional sedimentation tanks can no longer meet the required environmental standards. Construction projects are in urgent need of a simple, efficient, and low-consumption , small volume and convenient operation and management of waste water treatment device. In the prior art, there are mainly two types of waste water processors: one is a simple sedimentation tank, which naturally deposits sand and gravel and other substances in a large sedimentation tank, which occupies a large area, takes a long time to settle, and has poor treatment effect. It is difficult to meet environmental protection discharge standards; the other is the coagulation-sedimentation treatment method, which is to introduce the wastewater into the coagulation reaction vessel with an electric agitator, and after a certain period of reaction, the sludge will be precipitated and separated. The treatment effect of this processor is better than that of the previous One is better, but due to the setting of the electric stirrer, the energy consumption is increased, resulting in higher processing costs. At the same time, because the reaction of wastewater requires stirring to fully mix the medicament and wastewater, but stirring is not conducive to precipitation, there is a contradiction between the reaction and precipitation of wastewater, and this contradiction affects the treatment efficiency and quality of wastewater.

Therefore, there is a need for a treatment device for construction waste water, which can solve the contradiction between waste water reaction and precipitation, improve the treatment efficiency of construction waste water, reduce treatment cost, and has simple operation and smooth treatment process.

Contents of the invention

In view of this, the purpose of the present invention is to provide a dual treatment device for construction waste water, which can solve the contradiction between waste water reaction and precipitation, can speed up the flow rate of waste water, improve the treatment efficiency of construction waste water, reduce the treatment cost, and The operation is simple and the processing flow is smooth.

The dual treatment device for construction waste water of the present invention comprises a reaction sedimentation device, the reaction sedimentation device includes a reactor and a sedimentation tank, and the wastewater outlet after the reaction of the reactor communicates with the reaction wastewater inlet of the sedimentation tank; The sedimentation tank is provided with a sludge discharge port and a clean water discharge port.

Further, it also includes a stirring device, the reactor is provided with a wastewater inlet pipeline, and the stirring device is a helical piece arranged in the wastewater inlet pipeline and extending helically along the axial direction, and the helical piece is fixedly arranged on the inner wall of the wastewater inlet pipeline;

Further, it also includes a solid-liquid separation device, and the solid-liquid separation device is arranged in the sedimentation tank between the reaction waste water inlet of the sedimentation tank and the clear water outlet of the sedimentation tank;

Further, the solid-liquid separation device is a solid-liquid separation inclined plate, and a liquid baffle is set between the solid-liquid separation inclined plate and the reacted wastewater inlet of the sedimentation tank to completely separate the reacted wastewater from the clean water outlet;

Further, the hypotenuse of the solid-liquid separation inclined plate forms a triangular space with the inner wall of the sedimentation tank, and a clear water overflow port is arranged on the upper part of the solid-liquid separation inclined plate, and the clear water overflowing from the clear water overflow port flows to the triangle through the triangular weir on the side of the clear water overflow port. After the space, it flows to the clear water outlet of the sedimentation tank;

Further, a sludge outlet is provided at the bottom of the reactor;

Further, the cross-section of the reactor is circular, the wastewater inlet pipeline enters the reactor along a tangential direction, and the outlet of the wastewater inlet pipeline is a necking structure;

Further, an oil discharge port is provided on the wall of the reactor corresponding to the liquid level of the waste water;

Further, the reactor and the sedimentation tank are integrated, and the reacted wastewater outlet of the reactor is connected with the reacted wastewater inlet of the sedimentation tank through a connecting pipe, and the connecting pipe inlet is arranged downward at a position close to the bottom of the reactor;

Further, the bottom of the reactor and the sedimentation tank are conical with a large top and a small bottom, and a dosing port is set on the waste water inlet pipeline.

Beneficial effects of the present invention: In the dual treatment device for construction waste water of the present invention, the reaction and precipitation of waste water are carried out in different containers, which can solve the kinetic contradiction between the reaction and precipitation of waste water, can speed up the flow rate of waste water, and improve The treatment efficiency of construction wastewater reduces the treatment cost, and the operation is simple and the process is smooth; the inner wall of the pipeline is equipped with spiral blades, which use the principle of fluid dynamics to greatly reduce the fluid resistance compared with the mixing blades of the prior art, and achieve the acceleration of medicine and water. The purpose of wastewater mixing: the inlet pipeline enters the reactor along the tangential direction, and the principle of fluid dynamics is used to make the construction wastewater enter the cylindrical coagulation reactor along the tangential direction, and the fluid with a certain speed rotates along the inner wall of the reactor to accelerate the medicine and The mixed reaction of wastewater improves the treatment efficiency of wastewater; the solid-liquid separation device is installed in the sedimentation tank, which can accelerate the sedimentation speed and improve the treatment efficiency; the reactor is equipped with a sludge discharge port to prevent the sludge accumulation caused by the long-term use of the reactor, which is harmful to the reactor. The wall causes corrosion and reduces the service life. At the same time, it can increase the treatment speed of wastewater and improve the quality of final wastewater treatment; the reactor and the sedimentation tank are integrated, and the reactor and the sedimentation tank are connected through a connecting pipe, and the wastewater after the reaction of the connecting pipe The inlet is set downward near the bottom of the reactor; it not only ensures that the whole device has a compact structure, reduces volume, and is convenient for transportation and use, but also ensures that the wastewater flowing into the sedimentation tank is fully reacted wastewater to ensure the quality of treatment.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural representation of the present invention;

Figure 2 is a schematic diagram of the connection between the wastewater inlet pipeline and the reactor.

Detailed ways

Fig. 1 is a structural schematic diagram of the present invention, and Fig. 2 is a schematic diagram of the connection between the wastewater inlet pipeline and the reactor, as shown in the figure: the dual treatment device for building construction wastewater in this embodiment includes a control device 11 arranged on a support 9, Stirring device 14 and reaction sedimentation device, reaction sedimentation device comprises reactor 1 and sedimentation tank 4, the waste water outlet after reactor 1 reaction is connected with the waste water inlet after the reaction of sedimentation tank 4, and the wall of reactor 1 corresponds to the liquid level of waste water The oil discharge port 16 is arranged to facilitate the discharge of oil in the waste water and improve the quality of the treated water; the reactor 1 is provided with a waste water inlet pipeline 15, and the stirring device 14 is a helical piece arranged in the waste water inlet pipeline 15 and extending helically along the axial direction. The sheet is fixedly arranged on the inner wall of the waste water inlet pipeline 15, the cross section of the reactor 1 is circular, the waste water inlet pipeline 15 enters the reactor 1 along the tangential direction, and the outlet of the waste water inlet pipeline 15 is a necking structure (see Fig. The flow rate of the wastewater at the outlet of the wastewater inlet pipeline 15 can fully mix the wastewater with the medicine and improve the reaction quality; the sludge outlet 13 is arranged at the bottom of the reactor 1, which can assist sludge discharge to reduce the load of the sedimentation tank and improve the treatment efficiency;

The sedimentation tank 4 is provided with a sludge outlet 10 and a clear water outlet 7, and a solid-liquid separation swash plate 8 is arranged in the sedimentation tank 4, and the reaction waste water and The clear water outlet 7 is completely separated from the liquid baffle 3 to prevent waste water from mixing into the clean water and affecting the quality; the inclined edge of the solid-liquid separation sloping plate and the inner wall of the sedimentation tank 4 form a triangular space 6, and the upper part of the solid-liquid separation sloping plate is provided with a clean water overflow 5, The clear water overflowing from the clear water overflow port 5 flows through the triangular weir on the clear water overflow port 5 side to the triangular space 6 and then flows to the clear water outlet 7 of the sedimentation tank. The overflow port is set to fully settle and improve the treatment quality;

The reactor 1 and the sedimentation tank 4 are integrated, the outlet of the reacted wastewater in the reactor 1 is connected with the inlet of the reacted wastewater in the sedimentation tank 4 through the connecting pipe 2, and the inlet of the reacted wastewater in the connecting pipe 2 is set downward in the reactor 1 The position close to the bottom allows the fully reacted water to flow into the sedimentation tank, which is beneficial to improve the treatment quality; the bottom of the reactor 1 and the sedimentation tank 4 are all conical shapes with a large top and a small bottom, and a dosing port 12 is set on the waste water inlet pipeline 15. This implementation In the example, the drug feeding port is divided into two, which are respectively arranged at the two ends of the waste water inlet pipeline 15, so as to facilitate adding different drugs as required.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications within the parameter range or equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention shall be covered by the scope of the claims of the present invention.

Claims (10)

1. a dual treatment device for building construction waste water, comprising a reaction sedimentation device, characterized in that: the reaction sedimentation device includes a reactor (1) and a sedimentation tank (4), and the waste water after the reaction of the reactor (1) The outlet communicates with the inlet of the reacted waste water of the sedimentation tank (4); the sedimentation tank (4) is provided with a sludge outlet (10) and a clean water outlet (7). 2. the duplex treatment device of building construction waste water according to claim 1, is characterized in that: also comprise agitator (14), described reactor (1) is provided with waste water inlet line (15), and described agitator ( 14) is a helical piece arranged in the waste water inlet pipeline (15) and extending helically along the axial direction, and the helical piece is fixedly arranged on the inner wall of the waste water inlet pipeline (15). 3. The dual treatment device for building construction wastewater according to claim 1 or 2, characterized in that: it also includes a solid-liquid separation device (8), and the solid-liquid separation device (8) is arranged in the sedimentation tank (4) The interior is located between the waste water inlet after reaction of the sedimentation tank (4) and the clear water outlet (7) of the sedimentation tank. 4. The dual treatment device for construction waste water according to claim 3, characterized in that: the solid-liquid separation device (8) is a solid-liquid separation inclined plate, and the solid-liquid separation inclined plate is connected with the sedimentation tank (4 ) is provided with a liquid baffle (3) that completely separates the reacted waste water from the clear water outlet (7) between the reacted waste water inlets. 5. The dual treatment device for building construction waste water according to claim 4, characterized in that: the hypotenuse of the solid-liquid separation sloping plate forms a triangular space (6) with the inner wall of the sedimentation tank (8), and the solid-liquid separation slant A clear water overflow port (5) is arranged on the top of the plate, and the clear water overflowing from the clear water overflow port (5) flows to the triangular space (6) through the triangular weir on the side of the clear water overflow port (5) and then flows to the clear water outlet (7) of the sedimentation tank . 6. The dual treatment device for construction waste water according to claim 5, characterized in that: a sludge outlet (13) is provided at the bottom of the reactor (1). 7. The dual treatment device for building construction waste water according to claim 6, characterized in that: the cross section of the reactor (1) is circular, and the waste water inlet pipeline (15) enters the reactor (1) along a tangential direction ), the outlet of the waste water inlet pipeline (15) is a necking structure. 8. The dual treatment device for building construction wastewater according to claim 7, characterized in that: an oil discharge port (16) is provided on the wall of the reactor (1) corresponding to the liquid level of the wastewater. 9. The dual treatment device of building construction wastewater according to claim 8, characterized in that: the reactor (1) and the sedimentation tank (4) are integrated, and the wastewater outlet after the reaction of the reactor (1) is connected to the The inlet of the reacted waste water of the sedimentation tank (4) is connected through the connecting pipe (2), and the inlet of the connecting pipe (2) is arranged downwards at a position close to the bottom of the reactor (1). 10. The dual treatment device of building construction waste water according to claim 8, characterized in that: the bottom of the reactor (1) and the sedimentation tank (4) is conical with a large top and a small bottom, and the waste water inlet pipeline ( 15) set up the dosing mouth (12) on.

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