CN206901927U - A kind of municipal wastewater settling tank - Google Patents

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a municipal sewage settling tank, which includes a sewage settling tank body, a filter screen plate is arranged on the upper part of the sewage settling tank body, and the filter screen plate and the sewage settling tank body Arranged in parallel, the body of the sewage settling tank at one end of the filter screen is provided with a slag outlet. The utility model can filter the suspended solids and larger solids in the sewage through the set filter screen plate, and the set flocculant box can add flocculant to the sewage in the sewage settling tank body to speed up the sewage settlement, and is arranged in the sewage settlement tank The mixing device and aeration tube in the tank body can fully mix the flocculant and sewage to ensure uniform flocculation and settlement and oxygen content in the sewage. The bottom of the sewage settling tank body is trapezoidal to speed up the settling speed The sludge at the bottom of the tank body is sent to the belt sludge dewatering machine through the suction cup for dehydration treatment, so as to avoid environmental pollution caused by direct discharge of sludge.

Description

A Municipal Sewage Settling Tank

technical field

The utility model relates to the technical field of sewage treatment, in particular to a municipal sewage settling tank.

Background technique

Urban sewage is mainly the discharge water produced by various kitchen water, washing water and toilet water used in human life. Most of them are non-toxic inorganic salts. Urban sewage contains a lot of nitrogen, phosphorus, and sulfur, and there are many pathogenic bacteria. my country is currently facing a relatively serious shortage of water resources, and the treatment and reuse of sewage can effectively alleviate the situation of water shortage. The settlement of sewage is a necessary link in sewage treatment. When sewage settles through the settlement tank, a large amount of sedimentation at the bottom of the settlement tank If the deposited mud is directly discharged, it will pollute the environment and water resources. At the same time, the mud will settle at the bottom of the settling tank, affecting the normal use of the processing equipment. It needs to be manually cleaned regularly, which increases the labor intensity of the personnel.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a municipal sewage settling tank.

In order to achieve the above object, the utility model adopts the following technical solutions:

A kind of municipal sewage settling tank is designed, comprising a sewage settling tank body, the upper part of the sewage settling tank body is provided with a filter screen plate, the filter screen plate and the sewage settling tank body are arranged in parallel, and the filter screen plate at one end The sewage settling tank body is provided with a slag outlet, the top of the sewage settling tank body is provided with a water inlet pipe, the bottom of the filter plate is provided with a mixing device, and one side of the sewage settling tank body is connected to There is a flocculant box, the lower part of the sewage settling tank body is provided with an aeration pipe, and the aeration pipe is connected to the aerator through a trachea. The bottom of the sewage settling tank body is provided with a suction cup, and the suction cup passes through the sludge The conveying pipe is connected with the belt sludge dewatering machine.

Preferably, the mixing device includes a mixing motor, a coupling is arranged between the mixing motor and the stirring shaft, and a plurality of mixing paddles are installed on the stirring shaft.

Preferably, the bottom of the sewage settling tank body is arranged in a trapezoidal shape, and the smaller end faces are arranged downward.

Preferably, a push plate is arranged on the end of the screen plate opposite to the slag discharge port, and the push plate is connected to the cylinder through a piston rod.

Preferably, a flocculant adding pump and a flocculant flow meter are arranged on the pipeline between the flocculant tank and the sewage settling tank body.

The utility model proposes a municipal sewage settling tank, which has the beneficial effect that: the municipal sewage settling tank can filter the suspended matter and larger solids in the sewage through the filter plate arranged on the upper part of the sewage settling tank body, and set The flocculant box can add flocculant to the sewage in the sewage settling tank body to speed up the sewage settlement, and the mixing device and aeration tube installed in the sewage settling tank body can fully mix the flocculant and sewage to ensure the sewage in the sewage Oxygen content, the bottom of the sewage settling tank body is set in a trapezoidal shape to speed up the settling speed, and the sludge settled at the bottom of the sewage settling tank body is sent to the belt sludge dewatering machine for dehydration through the suction cup, which can not only clean the sludge at the bottom of the settling tank The sedimentation is cleaned up, and the direct discharge of sludge is avoided to cause environmental pollution, which reduces the labor intensity of personnel.

Description of drawings

Fig. 1 is the structural representation of a kind of municipal sewage settling tank proposed by the utility model;

Fig. 2 is the perspective view of a kind of municipal sewage settling tank proposed by the utility model;

Fig. 3 is a structural schematic diagram of a mixing device for a municipal sewage settling tank proposed by the utility model.

In the figure: 1-Sewage sedimentation tank body, 2-Filter plate, 21-Push plate, 3-Slag outlet, 4-Inlet pipe, 5-Flocculant box, 51-Flocculant adding pump, 52-Flocculant flow Meter, 6-aerator, 61-aeration tube, 7-mixing device, 71-mixing motor, 72-coupling, 73-stirring shaft, 74-mixing paddle, 8-suction cup, 9- Sludge conveying pipe, 10-belt sludge dewatering machine.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a municipal sewage settling tank includes a sewage settling tank body 1, the upper part of the sewage settling tank body 1 is provided with a filter plate 2, and the filter plate 2 and the sewage settling tank body 1 Arranged in parallel, the sewage settling tank body 1 at one end of the filter screen plate 2 is provided with a slag outlet 3, the top of the sewage settling tank body 1 is provided with a water inlet pipe 4, and the bottom of the filter screen plate 2 is provided with a mixer Uniform device 7, one side of the sewage settling tank body 1 is connected with a flocculant box 5 through a pipeline, the bottom of the sewage settling tank body 1 is provided with an aeration tube 61, and the aeration tube 61 passes through the air tube and the aeration tube. The air machine 6 is connected, and the bottom of the sewage settling tank body 1 is provided with a suction cup 8, and the suction cup 8 is connected with the belt sludge dehydrator 10 through the sludge conveying pipe 9, so as to avoid environmental pollution caused by direct discharge of sludge. The mixing device 7 includes a mixing motor 71, a shaft coupling 72 is arranged between the mixing motor 71 and the stirring shaft 73, and a plurality of mixing paddles 74 are installed on the stirring shaft 73, which can flocculate The agent and the sewage are fully mixed to ensure the uniformity of sewage flocculation and settlement in the sewage settling tank body 1. The bottom of the sewage settling tank body 1 is arranged in a trapezoidal shape, and the smaller end faces are set downward to speed up the settling speed. The filter A push plate 21 is arranged on the end of the screen plate 2 opposite to the slag discharge port 3, and the push plate 21 is connected with the cylinder through a piston rod, so that the residue on the filter screen plate 2 can be pushed to the slag discharge port through the push plate 21 3 discharge, the pipeline between the flocculant tank 5 and the sewage settling tank body 1 is provided with a flocculant addition pump 51 and a flocculant flow meter 52, the amount of flocculant to be added can be determined according to the actual situation of sewage treatment, to avoid Waste and insufficient flocculation.

Working principle: This kind of municipal sewage settling tank, first, the sewage enters the sewage settling tank body 1 through the water inlet pipe 4, and the sewage passes through the filter plate 2 on the upper part of the sewage settling tank body 1, and the filter plate 2 removes the suspended solids and Larger solids are filtered on the filter screen plate 2, and the suspended solids and larger solids on the filter screen plate 2 are pushed to the slag discharge port 3 to be discharged under the action of the push plate 21, and then, the flocculant adding pump 51 removes them The flocculant in the flocculant tank 5 is added to the sewage, and the stirring shaft 73 is driven by the mixing motor 71 to mix the sewage with the flocculant added to ensure that the flocculant and the sewage are fully mixed, and finally the flocculation in the sewage is removed by the suction cup 8 The sediment is sucked out of the sewage settling tank body 1, and the sediment is dehydrated through the belt sludge dehydrator 10.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. a kind of municipal wastewater settling tank, including sewage settling tank body（1）, it is characterised in that the sewage settling tank body （1）Top be provided with screen pack（2）, the screen pack（2）With sewage settling tank body（1）Between be arranged in parallel, institute State screen pack（2）The sewage settling tank body of one end（1）On be provided with slag-drip opening（3）, the sewage settling tank body（1）'s Top is provided with water inlet pipe（4）, the screen pack（2）Bottom be provided with evenly mixing device（7）, the sewage settling tank body （1）Side on flocculant case is connected with by pipeline（5）, the sewage settling tank body（1）Bottom be provided with aeration tube （61）, the aeration tube（61）Pass through tracheae and aerator（6）Connection, the sewage settling tank body（1）Bottom be provided with Sucker（8）, the sucker（8）Pass through sludge carrier pipe（9）With belt mud dewatering equipment（10）Connection.

A kind of 2. municipal wastewater settling tank according to claim 1, it is characterised in that the evenly mixing device（7）Including mixed Even motor（71）, the mixing motor（71）And agitating shaft（73）Between be provided with shaft coupling（72）, the agitating shaft（73）On Multiple mixing blades are installed（74）.

A kind of 3. municipal wastewater settling tank according to claim 1, it is characterised in that the sewage settling tank body（1） The trapezoidal setting in bottom, and end face is less sets down.

A kind of 4. municipal wastewater settling tank according to claim 1, it is characterised in that the screen pack（2）Upper and row Cinder notch（3）Push pedal is provided with relative one end（21）, the push pedal（21）It is connected by piston rod with cylinder.

A kind of 5. municipal wastewater settling tank according to claim 1, it is characterised in that the flocculant case（5）And sewage Settling tank body（1）Between pipeline on be provided with flocculant addition pump（51）With flocculant flowmeter（52）.