CN207877449U - Sand washing wastewater treatment system - Google Patents

Abstract

The utility model discloses a sand washing wastewater treatment system, comprising a primary sand settling tank, a coagulation tank, a sedimentation tank, a flowing sand filter, a clear water tank, a sludge thickening tank and a filter press, wherein the primary sand settling tank, the coagulation tank, the sedimentation tank, the flowing sand filter and the clear water tank are sequentially connected, the sedimentation tank is connected to the sludge thickening tank, and the filter press is connected to the sludge thickening tank. The sand washing wastewater of the utility model enters the flowing sand filter after primary sedimentation, coagulation and sedimentation, and the silt after primary sedimentation is collected. The flowing sand filter integrates flocculation, clarification and filtration, thereby ensuring the effluent quality of the sand washing wastewater treatment system, and the flowing sand filter has low operating cost and high efficiency, thereby reducing the operating cost of the sand washing wastewater treatment system.

Description

A sand washing wastewater treatment system

technical field

The utility model relates to a sewage treatment system, in particular to a sand washing wastewater treatment system.

Background technique

The sediment content in the sand washing wastewater is huge, and the sand washing wastewater must be treated and discharged or recycled. The tailings in the sand washing wastewater can be used as good paving gravel for export, so the sediment in the sand washing wastewater should be Dispose of properly. The clear water after coagulation and sedimentation is usually used as the effluent for sand washing wastewater. The effluent quality of the system for treating sand washing wastewater by coagulation and sedimentation is unstable, and the sediment in the sand washing wastewater has not been properly disposed of.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides a technical scheme adopted by a sand washing wastewater treatment system as follows:

A sand washing wastewater treatment system, including a primary grit chamber, a coagulation pond, a sedimentation pond, a flowing sand filter, a clean water pond, a sludge thickening pond and a filter press, a primary grit chamber, a coagulation pond, a sedimentation pond, The flowing sand filter and the clear water tank are connected in sequence, the sedimentation tank is connected with the sludge thickening tank, and the filter press is connected with the sludge thickening tank.

Further, the inner wall of the primary grit chamber is conical.

Further, it also includes a sand storage tank, the bottom of the primary grit chamber is provided with a sand discharge valve, and the primary grit chamber communicates with the sand storage tank through the sand discharge valve.

Further, the primary grit chamber communicates with the water inlet of the coagulation pond through an outlet pipe, and the lower end of the outlet pipe extends into the primary grit chamber and does not contact the bottom of the primary grit chamber.

The primary grit chamber of the sand washing wastewater treatment system described in the utility model removes the large-grained silt in the wastewater. Collected into the sand storage, so that the sediment in the sand washing wastewater can be properly disposed of;

After primary sedimentation, coagulation and precipitation, the sand washing wastewater enters the flowing sand filter. The flowing sand filter integrates flocculation, clarification and filtration to ensure the quality of the effluent water from the sand washing wastewater treatment system, and the operating cost of the flowing sand filter Low, high efficiency, reducing the operating cost of the sand washing wastewater treatment system.

Description of drawings

Fig. 1 is a schematic diagram of a sand washing wastewater separation system described in the utility model;

Fig. 2 is a schematic structural view of the primary grit chamber of the present invention.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

With reference to Fig. 1-2, propose an embodiment of the present invention, described sand washing wastewater treatment system comprises primary grit chamber 1, coagulation pond 2, sedimentation pond 3, mobile sand filter pond 4, clear water pond 5, sewage Mud concentration tank 6, filter press 7 and sand storage tank 8, primary grit chamber 1, coagulation tank 2, sedimentation tank 3, flowing sand filter tank 4 and clear water tank 5 are connected in sequence, and the coagulation tank 2, sedimentation tank Pool 3 communicates with sludge thickening tank 6 , and sludge thickening tank 6 communicates with filter press 7 .

The interior of the primary grit chamber 1 is conical, and the bottom of the primary grit chamber 1 is provided with a sand discharge valve 11 , and the primary grit chamber 1 communicates with the sand storage tank 8 through the sand discharge valve 11 .

The sand-washing wastewater flows into the primary grit chamber 1, and the large-grained sand is collected at the bottom of the primary sand-washing chamber 1. The sand discharge valve 11 is opened, and the large-grained sand is collected into the sand storage tank 8, so that the sand in the sand-washing waste water is Proper disposal is conducive to the reuse of sediment.

The primary grit chamber 1 communicates with the water inlet of the coagulation tank 2 through an outlet pipe 12,

The lower end of the outlet pipe 12 extends into the primary grit chamber 1, and the lower end of the outlet pipe 12 does not contact with the bottom of the primary grit chamber 1, preventing large particles of silt from flowing into the coagulation pond 2 through the outlet pipe 12.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (4)

1. A kind of sand washing waste water treatment system is characterized in that, comprises primary grit chamber, coagulation pond, settling tank, flowing sand filter, clear water pond, sludge thickening pond and press filter, primary grit chamber, mixer The coagulation tank, the sedimentation tank, the flowing sand filter tank and the clean water tank are connected in sequence, the coagulation tank, the sedimentation tank are connected with the sludge thickening tank, and the filter press is connected with the sludge thickening tank. 2. The sand washing wastewater treatment system according to claim 1, wherein the inner wall of the primary grit chamber is conical. 3. A kind of sand washing wastewater treatment system according to claim 2, characterized in that, it also includes a sand storage tank, the bottom of the primary grit chamber is provided with a sand discharge valve, and the primary grit chamber passes through The valve communicates with the sand storage tank. 4. A sand washing wastewater treatment system according to claim 2, wherein the primary grit chamber is connected to the water inlet of the coagulation tank through an outlet pipe, and the lower end of the outlet pipe extends into the primary grit chamber pool and not in contact with the bottom of the primary grit chamber.