CN-121990650-A - Multichamber type groove type electrochemical oxidation reactor

CN121990650ACN 121990650 ACN121990650 ACN 121990650ACN-121990650-A

Abstract

The invention relates to the technical field of industrial wastewater treatment, and discloses a multi-chamber type groove type electrochemical oxidation reactor which comprises a closed narrow groove body, an electrode assembly and a plurality of flow guide baffles. A water inlet is formed in the bottom of one end of the groove body in the length direction, a water outlet is formed in the top of the other end of the groove body, a push-flow type flow channel with the bottom being pushed out is formed, water flow short circuit, dead zone and short flow are effectively avoided, and the effective contact time of wastewater and an electrode is prolonged. The flow guide partition plate is of an arch structure, the vertical direction occupies half of the space of the section of the tank body, the inner cavity of the tank body is divided into a plurality of reaction chambers connected in series by up-down staggered arrangement, the structural strength of the partition plate is enhanced, and the uniformity of the flow field of the tank body is optimized. The flow guide partition plates are enclosed to form a reaction path consistent with the section of the electrode assembly, the electrode assembly spans the groove body and is in clearance fit with the partition plates, the flow channels around the electrodes are ensured to be uniform, and the current density deviation is avoided.

Inventors

WANG XUDONG
ZHANG HAO
WANG ZEXIN
SU JIE
SHI XIAOLI

Assignees

国电投远达水务有限公司

Dates

Publication Date: 20260508
Application Date: 20260327

Claims (7)

1. The multi-chamber type groove type electrochemical oxidation reactor is characterized by comprising a closed groove body, an electrode assembly and a plurality of flow guide clapboards, wherein the groove body is a long and narrow groove body, the bottom of one end of the groove body in the length direction is provided with a water inlet, the top of the other end of the groove body is provided with a water outlet, and a push flow type flow channel with bottom inlet and ejection is formed; the flow guide partition plates are vertically arranged in the inner cavity of the tank body along the length direction of the tank body, are arched and occupy half of the space of the section of the tank body in the vertical direction, and are arranged in an up-and-down staggered manner to divide the inner cavity of the tank body into a plurality of reaction chambers connected in series; The plurality of flow guide clapboards form a reaction path for the electrode assembly to pass through, the electrode assembly is transversely arranged in the groove body in a crossing manner, the cross section of the reaction path is identical to that of the electrode assembly, and the electrode assembly is in clearance fit with the flow guide clapboards.
2. The reactor according to claim 1, wherein the end caps are mounted to both ends of the cell body in the longitudinal direction, and both ends of the electrode assembly are mounted to the cell body through the end caps.
3. The reactor according to claim 2, wherein the electrode assembly comprises a plurality of electrode stacks, the electrode stacks comprise a plurality of electrode plates which are arranged at equal intervals, connecting plates which are arranged at two ends of the electrode plates, binding posts are arranged on the connecting plates, and mounting holes for the binding posts to pass through are formed in the end covers.
4. The reactor of claim 3, wherein the same polar plate is connected to at most one connecting plate, the polar plate is provided with at most one clamping groove for clamping with the connecting plate, the clamping groove is in interference fit with the connecting plate, and a plurality of polar plates are connected through an insulating double-ended screw rod.
5. The reactor of claim 4, wherein the polar plates are provided with through holes for the insulating threaded screws to pass through, the through holes are in clearance fit with the insulating threaded screws, a vibration assembly is arranged between adjacent polar plates and comprises a connecting sleeve sleeved on the insulating threaded screws, a rotating cylinder rotationally arranged on the connecting sleeve, one end of the connecting sleeve is embedded into the clearance between the through holes and the insulating threaded screws, the rotating cylinder is provided with an arc-shaped end face, and a plurality of grooves are axially formed in the outer side of the rotating cylinder.
6. The reactor of claim 5, wherein the connecting sleeve comprises a connecting section for being embedded into the perforation and a fixing section deviating from the connecting section, the rotating cylinder is rotatably connected to the fixing section, a bearing is arranged between the fixing section and the rotating cylinder, the axial length of the fixing section is smaller than that of the rotating cylinder, and the arc-shaped end face of the rotating cylinder is always abutted with the polar plate.
7. The reactor of claim 1, wherein the water inlet pipe is arranged at the water inlet and the water outlet is arranged at the water outlet on the tank body, flanges for connecting the end covers are further arranged at two ends of the tank body in the length direction, and the distance between the bottom ends of the flanges and the bottom ends of the tank body is greater than the distance between the bottom ends of the water inlet and the bottom ends of the tank body.

Description

Multichamber type groove type electrochemical oxidation reactor Technical Field The invention relates to the technical field of industrial wastewater treatment, in particular to a multi-chamber type groove type electrochemical oxidation reactor. Background In the production process of nuclear power plants and thermal power plants, industrial wastewater containing ammonia nitrogen can be continuously generated, the wastewater has higher salt content and larger fluctuation of chloride ion concentration, and if the wastewater is directly discharged, serious pollution can be caused to the ecological environment, so that the wastewater can be discharged after high-efficiency purification treatment. The electrochemical oxidation method has the advantages of high treatment efficiency, no secondary pollution, high adaptation of high-salt-content wastewater and the like, and becomes one of the main flow technologies of ammonia nitrogen wastewater treatment in the current power industry, and the core equipment is an electrochemical reactor, so that the structural design of the reactor directly determines the ammonia nitrogen treatment efficiency, the equipment operation stability and the engineering suitability. At present, the existing electrochemical reactor for treating ammonia nitrogen wastewater in the power industry has a plurality of technical defects that the existing electrochemical reactor is difficult to meet the actual engineering demands of a nuclear power plant and a thermal power plant, firstly, the existing reactor is poor in water quality adaptability, and cannot realize stable treatment aiming at the characteristic of fluctuation of chloride ion concentration of the wastewater of the power plant, the treatment efficiency is greatly reduced when the chloride ion concentration is too low, harmful side reactions are easily generated when the chloride ion concentration is too high, secondly, the existing reactor is complex in structure and low in operation reliability, electrode arrangement is mostly sectional, electric connection nodes are numerous, the problems of poor contact and frequent faults are easily generated, long-term continuous stable operation and less maintenance demands required by the nuclear power plant cannot be met, thirdly, the equipment is huge in volume and complicated to install, a large number of distributed arrangement or on-site masonry tanks are needed, large occupied area is not realized, the equipment is limited by the space of a condensate water finishing workshop of the power plant, the existing reactor is insufficient in high-load treatment capacity, the unit volume treatment flow of the existing reactor is long in time, the single equipment is difficult to adapt to the large-flow ammonia nitrogen treatment demands of the power plant, and the occupied area of the equipment is further increased, and the investment and the equipment is required to be connected in parallel. Disclosure of Invention The invention aims to provide a multi-chamber type groove type electrochemical oxidation reactor, which solves the problems that the existing ammonia nitrogen wastewater treatment equipment in the power industry is complex in structure, poor in reliability, difficult to realize high-load continuous operation and difficult to install compactly in an unsuitable power plant. The multi-chamber type groove type electrochemical oxidation reactor comprises a closed groove body, an electrode assembly and a plurality of flow guide baffles, wherein the groove body is an elongated groove body, a water inlet is formed in the bottom of one end of the groove body in the length direction, a water outlet is formed in the top of the other end of the groove body, a push flow type flow passage with a bottom inlet being ejected out is formed, the flow guide baffles are vertically arranged in the inner cavity of the groove body along the length direction of the groove body, the flow guide baffles are arranged in an arch shape and occupy half of the cross section of the groove body in the vertical direction, the flow guide baffles are arranged up and down in a staggered mode, the inner cavity of the groove body is divided into a plurality of reaction chambers connected in series, the flow guide baffles form a reaction path for the electrode assembly to penetrate through, the electrode assembly is arranged in a crossing mode in the groove body in the left-right direction, the cross section of the reaction path is identical to the cross section of the electrode assembly, and the electrode assembly is in clearance fit with the flow guide baffles. The device has the beneficial effects that the structure of the narrow and long sealed groove body matched with water inlet at the bottom of one end and water outlet at the top of the other end forms the push-flow type flow channel with the bottom inlet and the top outlet, so that wastewater orderly flows along a fixed path, the phenomena of water flow short circ