CN-118771568-B - Multiple flocculation sedimentation treatment device for sewage

CN118771568BCN 118771568 BCN118771568 BCN 118771568BCN-118771568-B

Abstract

The invention provides a multiple flocculation sedimentation treatment device for sewage, which comprises a mixing unit, a first flocculation unit and a second flocculation unit. The mixing unit is equipped with a plurality of, and each mixing unit can stir sewage and flocculating agent that gets into the mixing chamber by the feed inlet respectively. The first flocculation unit has a first flocculation chamber in communication with the discharge outlet of each mixing unit. The first flocculation unit is capable of receiving a mixture of sewage and a flocculant while remixing and settling the sewage and the flocculant. The second flocculation unit is provided with a second flocculation cavity communicated with the overflow outlet of the first flocculation unit, and can receive the upper-layer sewage transmitted by the first flocculation unit and enable the sewage to subside again in a negative pressure mode of the second flocculation cavity. The multiple flocculation sedimentation treatment device for sewage can effectively ensure the full mixing of sewage and flocculant, and can ensure the flocculation effect.

Inventors

LIU GUODONG
DING SHIWEI
YIN YUE
LIU XING
HUANG ZHENGZHENG
LI TENGFEI

Assignees

中电建生态环境集团有限公司

Dates

Publication Date: 20260512
Application Date: 20240905

Claims (6)

1. The utility model provides a multiple flocculation sedimentation processing apparatus for sewage which characterized in that includes: the mixing units are provided with a plurality of mixing cavities, each mixing unit is provided with a feed inlet and a discharge outlet which are communicated with the mixing cavity, and each mixing unit is used for respectively stirring sewage and flocculant which enter the mixing cavity from the feed inlet; The first flocculation unit is provided with a first flocculation cavity communicated with the discharge outlet of each mixing unit, the top of the first flocculation unit is provided with an overflow outlet, the first flocculation unit is used for receiving a mixture of sewage and flocculant and simultaneously mixing the sewage and the flocculant again and settling the mixture, the first flocculation unit comprises a first support, a first flocculation tank, a ventilation structure and an overflow structure, the first flocculation tank is fixedly arranged on the first support, the inner cavity of the first flocculation tank is the first flocculation cavity, the bottom end of the first flocculation tank is provided with a first sewage outlet, the overflow outlet is positioned at the top of the first flocculation tank, the ventilation structure is fixedly arranged in the first flocculation tank and is provided with a ventilation part extending into the first flocculation cavity, the ventilation structure is used for injecting high-pressure air into the sewage in the first flocculation cavity, the overflow structure is positioned at the top of the first flocculation cavity and is fixedly arranged on the inner wall of the first flocculation cavity, the overflow structure is provided with a first flocculation cavity and a ventilation pipe which is respectively communicated with the first flocculation cavity, the ventilation pipe is arranged at the bottom end of the first flocculation tank and is communicated with the ventilation pipe, the ventilation pipe is formed by the upper end of the ventilation pipe, the ventilation pipe is coaxially arranged at the bottom end of the ventilation pipe, the ventilation pipe is communicated with the ventilation pipe, the ventilation pipe is formed with the upper end of the ventilation pipe, the ventilation pipe is communicated with the upper end of the ventilation pipe, the ventilation pipe is formed with the upper end of the ventilation pipe, the ventilation pipe is filled with the upper end of the ventilation pipe, the air pump and the vent pipe are arranged to be capable of introducing air into the first flocculation cavity, so that air bubbles are formed to rise into the annular space, and under the action of air pressure, the air bubbles transversely move to the outer edge of the bottom end of the partition cylinder and rise again, wherein the height of the bottom end of the partition cylinder is higher than that of the bottom end of the vent pipe; The second flocculation unit is provided with a second flocculation cavity communicated with the overflow outlet of the first flocculation unit, is used for receiving upper-layer sewage transferred by the first flocculation unit and settling the sewage again in a mode of enabling the second flocculation cavity to form negative pressure, comprises a second flocculation tank and a vacuum pump, wherein the inner cavity of the second flocculation tank is the second flocculation cavity, and the vacuum pump is fixedly arranged on the second flocculation tank and connected with an exhaust port arranged at the top end of the second flocculation tank to enable the second flocculation tank to form negative pressure.
2. The multiple flocculation sedimentation treatment device for sewage as claimed in claim 1, wherein each of the mixing units comprises: The material inlet is positioned at the top end of the vertical stirring barrel, and the discharge outlet is positioned at the bottom end of the vertical stirring barrel; And the stirring structure is arranged on the vertical stirring barrel and is used for stirring the sewage and the flocculating agent in the mixing cavity.
3. The multiple flocculation sedimentation treatment device for sewage as set forth in claim 2, wherein said stirring structure comprises: the connecting shaft is arranged in line with the vertical central axis of the mixing cavity and is rotationally connected with the vertical stirring barrel, and the bottom end of the connecting shaft stretches into the mixing cavity; The stirring blades are positioned in the mixing cavity and uniformly distributed on the connecting shaft; The driver is fixedly arranged at the top end of the vertical stirring barrel and is in power connection with the connecting shaft.
4. The multiple flocculation sedimentation treatment device for sewage as set forth in claim 1, wherein said overflow structure comprises: the bottom plate is horizontally arranged and is positioned below the overflow port; the two side plates are positioned at two sides of the overflow port along the horizontal direction and are connected with the bottom plate; The filter plates are respectively connected with the bottom plate and the two side plates so as to enclose in the first flocculation cavity to form an open cavity with an open top end; the two floating balls are respectively arranged at two sides of the filter plate along the vertical direction and are connected with the side wall of the first flocculation cavity through elastic ropes; the scraping plate is horizontally arranged and connected with the two floating balls and is used for vertically moving along with the floating balls so as to clean particles attached to the filter plate.
5. The multiple flocculation sedimentation treatment device for sewage as claimed in claim 1, wherein the multiple flocculation sedimentation treatment device for sewage further comprises a mounting frame for mounting each of the mixing units; The height of each mixing cavity is higher than that of the first flocculation cavity.
6. The multiple flocculation sedimentation treatment device for sewage as claimed in claim 1, wherein the second flocculation unit comprises: The second bracket is provided with an overhaul platform; The second flocculation tank is fixedly arranged on the second support, a plurality of partition plates are arranged in the second flocculation cavity at intervals along the vertical direction, each partition plate divides the second flocculation cavity into a plurality of subchambers with communicated top ends, the subchambers at one end are communicated with the overflow outlet, the bottom ends of the subchambers at the other end are connected with the discharge outlet, and a plurality of second drain outlets communicated with the subchambers are arranged at the bottom ends of the second flocculation tank.

Description

Multiple flocculation sedimentation treatment device for sewage Technical Field The invention belongs to the technical field of sewage treatment equipment, and particularly relates to a multiple flocculation sedimentation treatment device for sewage. Background The flocculation purification adopted in sewage treatment mainly comprises the steps of removing suspended matters, colloid substances and some soluble substances in water in a flocculation and precipitation mode, and coagulating and settling solid impurities in sewage by adding a flocculating agent into the sewage. After adding flocculant into sewage, the colloid and dispersed particles of suspended matter produce flocculate under the interaction of molecular force, and the flocculate is mutually collided and coagulated in the settling process, so that the size and the quality of the flocculate are continuously increased, and the settling speed is continuously increased, thereby achieving the purpose of solid-liquid separation. In the prior art, the flocculation purification process of sewage is usually carried out in a flocculation purification device, and in order to improve the flocculation effect, a simple stirring is adopted to enable a flocculating agent to fully contact with impurities which are precipitated and coagulated, and the mode has low mixing efficiency for promoting sewage and the flocculating agent, and has poor flocculation effect and poor practicability. Disclosure of Invention The embodiment of the invention provides a multiple flocculation sedimentation treatment device for sewage, which aims to solve the problem of poor usability caused by poor flocculation purification effect of the traditional flocculation purification device. In order to achieve the purpose, the invention adopts the technical scheme that the device for treating the sewage by multiple flocculation sedimentation comprises: the mixing units are provided with a plurality of mixing cavities, each mixing unit is provided with a feed inlet and a discharge outlet which are communicated with the mixing cavity, and each mixing unit is used for respectively stirring sewage and flocculant which enter the mixing cavity from the feed inlet; The first flocculation unit is used for receiving the mixture of the sewage and the flocculating agent, and simultaneously mixing the sewage and the flocculating agent again and settling; the second flocculation unit is provided with a second flocculation cavity communicated with the overflow outlet of the first flocculation unit, and is used for receiving the upper sewage transferred from the first flocculation unit and settling the sewage again in a negative pressure mode of the second flocculation cavity. In one possible implementation, each of the mixing units comprises: The material inlet is positioned at the top end of the vertical stirring barrel, and the discharge outlet is positioned at the bottom end of the vertical stirring barrel; And the stirring structure is arranged on the vertical stirring barrel and is used for stirring the sewage and the flocculating agent in the mixing cavity. In one possible implementation, the stirring structure includes: The connecting shaft is arranged in line with the central axis of the mixing cavity in the vertical direction and is rotationally connected with the vertical stirring barrel, and the bottom end of the connecting shaft stretches into the mixing cavity; The stirring blades are positioned in the mixing cavity and uniformly distributed on the connecting shaft; The driver is fixedly arranged at the top end of the vertical stirring barrel and is in power connection with the connecting shaft. In one possible implementation, the first flocculation unit comprises: A first bracket; The flocculation device comprises a first flocculation box, a first sewage draining outlet, a second flocculation box, a first flocculation box and a second flocculation box, wherein the first flocculation box is fixedly arranged on a first bracket, and an inner cavity of the first flocculation box is the first flocculation cavity; The ventilation structure is fixedly arranged in the first flocculation tank and is provided with a ventilation part extending into the first flocculation cavity, and the ventilation structure is used for injecting high-pressure air into the sewage in the first flocculation cavity; The overflow structure is positioned at the top of the first flocculation cavity and fixedly arranged on the inner wall of the first flocculation cavity, is provided with an open cavity which is respectively communicated with the first flocculation cavity and the overflow outlet, and is used for allowing upper sewage after sedimentation of the first flocculation cavity to enter and intercepting large fixed particles in the sewage so as to lead out the sewage carrying the small fixed particles at the overflow outlet. In one possible implementation, the ventilation structure includes: The air pump is fixedly