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CN-121971893-A - Floccule deposition device based on chromium-containing wastewater treatment

CN121971893ACN 121971893 ACN121971893 ACN 121971893ACN-121971893-A

Abstract

The invention relates to the field of wastewater treatment, and particularly discloses a floccule deposition device based on chromium-containing wastewater treatment, which comprises a sedimentation tank with a sedimentation channel, wherein a blanking cone is arranged at the bottom of the sedimentation tank, and inclined sedimentation parts are symmetrically arranged in the sedimentation tank along the sedimentation channel in a linear array. According to the invention, wastewater containing floccules can enter along the water inlet and sink along the sinking channel, the floccules can be deposited along the sinking channel due to dead weight in the sinking process, the wastewater can flow into the inclined sinking part along the floccules after sinking, at the moment, the floccules can flow along the inclined sinking part to sink, when sinking, the floccules accumulated on the surface of the inclined sinking part can slide along the inclined sinking part to the discharging cone, when the floccules slide to the interlayer plate, the floccules can enter along the large end and slide out from the small end, and the influence on the floccules on the surface layer of the inclined sinking part can be reduced, so that the filtering efficiency is improved.

Inventors

  • SUN WENCHENG

Assignees

  • 安徽朗蔚环境科技有限公司

Dates

Publication Date
20260505
Application Date
20260323

Claims (10)

  1. 1. The utility model provides a floccule deposition device based on chromium-containing wastewater treatment, its characterized in that, including sedimentation tank (1) that possesses heavy water channel (11), sedimentation tank (1) bottom is provided with unloading awl (12), follow in sedimentation tank (1) heavy water channel (11) are the slope heavy material portion (2) that are the linear array symmetry and are provided with slope, be linear array on the slope heavy material portion (2) and be provided with division board (21), offer on division board (21) towards straight inclined plane (211) of slope heavy material portion (2) top surface forms the orientation the tip of unloading awl (12).
  2. 2. The floccule deposition device based on chromium-containing wastewater treatment according to claim 1, wherein the inclined settling part (2) comprises a settling inclined tube (5), an interlayer semi-ring (52) is arranged in a linear array in the settling inclined tube (5), and an annular inclined plane (521) is formed on the interlayer semi-ring (52).
  3. 3. Flock deposition device based on chromium-containing wastewater treatment according to claim 2, characterized in that the top of the sedimentation tank (1) is provided with a water outlet cover plate (4) with a plurality of water outlet holes (40), and the water outlet cover plate (4) is provided with an annular bulge (41) corresponding to the sedimentation inclined tube (5).
  4. 4. A flock deposition device based on chromium-containing wastewater treatment according to claim 3, characterized in that the top of the sedimentation inclined tube (5) is provided with a ring formed by two barrier half rings (52), which correspond to the annular protrusions (41).
  5. 5. Flock deposition device based on chromium-containing wastewater treatment according to claim 1, characterized in that the top of the sedimentation tank (1) is provided with a water outlet cover plate (4) with a plurality of water outlet holes (40), the water outlet surface of the water outlet cover plate (4) is provided with annular protrusions (41) concentric with the water outlet holes (40).
  6. 6. The floccule deposition device based on chromium-containing wastewater treatment according to claim 2, wherein adjacent settling inclined pipes (5) are arranged in a staggered manner to form a blanking channel (501), a plurality of discharge ports (50) corresponding to the interlayer semi-rings (52) are formed at the bottoms of the settling inclined pipes (5), and the discharge ports (50) are communicated with the blanking channel (501).
  7. 7. The flock deposition device based on chromium-containing wastewater treatment according to claim 6, wherein a water receiving horn (51) is arranged at the bottom of the sedimentation inclined tube (5), a cross outlet is formed adjacent to the water receiving horn (51), and the cross outlet is communicated with the discharging channel (501).
  8. 8. The flock deposition device based on chromium-containing wastewater treatment according to claim 1, wherein a buffer frame (61) is linearly arranged on the discharging cone (12), and a water permeable port (613) is formed on the buffer frame (61).
  9. 9. The flock deposition device based on chromium-containing wastewater treatment according to claim 8, wherein a plurality of buffer frames (61) are fixed with sliding rods (62), the buffer frames (61) are divided into two groups and symmetrically arranged along the submerged channel (11), and a fixed sleeve (621) is slidably arranged between the two sliding rods (62).
  10. 10. The flock deposition device based on chromium-containing wastewater treatment according to claim 9, wherein the inclined settling portion (2) is provided with a partition groove for limiting the top end of the buffer frame (61).

Description

Floccule deposition device based on chromium-containing wastewater treatment Technical Field The invention relates to a wastewater treatment technology, in particular to a floccule deposition device based on chromium-containing wastewater treatment. Background It is known that chromium-containing wastewater mainly comes from industries such as electroplating, dye printing and the like, is one of industrial wastewater with huge harm, hexavalent chromium in the wastewater is a highly toxic substance, and environmental protection treatment is needed before discharge, so that the harm to the environment is reduced. The method comprises the main steps of adding a treating agent into chromium-containing wastewater, wherein the total mass concentration of chromium in the chromium-containing wastewater is 10-100 mg/L, adding 5-10 g of the treating agent into each liter of the chromium-containing wastewater, continuously stirring for 10-30 min, then carrying out ultrasonic treatment for 20-30 min, standing for sedimentation, filtering, and adjusting the pH value of filtrate to be neutral, wherein the treating agent consists of 3-5% of pullulan, 5-10% of zeolite-loaded nano TiO2, and the balance of modified bentonite. According to the invention, the optimized and improved treating agent is added into the chromium-containing wastewater, the adsorption flocculation effect of the treating agent is utilized, and the cavitation and flocculation effect of ultrasound are matched, so that chromium precipitate in the chromium-containing wastewater is removed after standing and filtering, and the method has the advantages of simple process steps, strong operability, wide applicability, high efficiency, low treatment cost and high chromium removal rate of the wastewater. The prior art has the defects that hexavalent chromium is often converted into trivalent chromium through a reducing agent and a chromium hydroxide precipitate is formed through hydroxide when chromium-containing wastewater is treated, and the converged chromium hydroxide precipitate forms floccules which have the properties of light weight, fluffiness, high water content and strong viscosity, so that the separated floccules are easily taken away in the precipitation process. Disclosure of Invention The invention aims to provide a floccule deposition device based on chromium-containing wastewater treatment so as to solve the defects in the prior art. In order to achieve the purpose, the invention provides the technical scheme that the floccule deposition device based on chromium-containing wastewater treatment comprises a sedimentation tank with a sedimentation channel, wherein a discharging cone is arranged at the bottom of the sedimentation tank, inclined sedimentation parts which are symmetrically arranged in the sedimentation tank along the sedimentation channel in a linear array are arranged, a partition plate is arranged on the inclined sedimentation parts in a linear array, and a straight inclined surface which faces to the top surface of the inclined sedimentation parts is arranged on the partition plate to form a small end which faces to the discharging cone. As further description of the technical scheme, the inclined sinking portion comprises a sinking inclined pipe, interlayer semi-rings are arranged in the sinking inclined pipe in a linear array, and annular inclined planes are formed in the interlayer semi-rings. As further description of the technical scheme, a water outlet cover plate with a plurality of water outlet holes is arranged at the top of the sedimentation tank, and annular protrusions corresponding to the sinking inclined pipes are arranged on the water outlet cover plate. As further description of the technical scheme, the top of the sinking inclined tube is provided with a circular ring formed by two interlayer semi-rings, and the circular ring corresponds to the annular bulge. As further description of the technical scheme, a water outlet cover plate with a plurality of water outlet holes is arranged at the top of the sedimentation tank, and annular protrusions concentric with the water outlet holes are arranged on the water outlet surface of the water outlet cover plate. As further description of the technical scheme, the adjacent sinking inclined pipes are arranged in a staggered manner to form a blanking channel, a plurality of discharge ports corresponding to the interlayer semi-rings are formed in the bottoms of the sinking inclined pipes, and the discharge ports are communicated with the blanking channel. As further description of the technical scheme, the bottom of the sinking inclined tube is provided with a water receiving horn, a cross outlet is formed adjacent to the water receiving horn, and the cross outlet is communicated with the discharging channel. As further description of the technical scheme, the blanking cone is provided with a buffer frame in a linear mode, and the buffer frame is provided with a water permeab