Search

CN-122010335-A - Textile wastewater safety discharge treatment device based on membrane separation

CN122010335ACN 122010335 ACN122010335 ACN 122010335ACN-122010335-A

Abstract

The invention discloses a textile wastewater safety discharge treatment device based on membrane separation, which is applied to the field of wastewater treatment, wherein the device is used for filtering impurities such as fiber scraps, dye particles, undissolved chemicals and the like in wastewater by setting a filtering flow as three stages of pretreatment, main treatment and post treatment, the main filtration adopts various membrane materials, the combination can be flexibly carried out, a water quality sensor is utilized for detecting fluctuating water quality components in real time, the treatment path is dynamically configured and optimized, the adaptability of a membrane separation assembly is effectively improved, compared with the existing immobilized filtration flow, the wastewater differentiation and precision treatment can be realized, the on-line cleaning structure is arranged in the pretreatment stage, the impurities are cleaned by utilizing the ultrasonic vibration and magnetic adsorption technology, the ultrasonic vibration can effectively prevent the impurity layer from compacting on a filter screen, the filter screen is prevented from being blocked, the impurities can be rapidly discharged by magnetic adsorption, and the solid-liquid separation speed is high, and the efficiency is high.

Inventors

  • CHEN JINGLEI
  • ZHANG YUHE

Assignees

  • 临清市智卓纺织有限公司

Dates

Publication Date
20260512
Application Date
20260226

Claims (9)

  1. 1. The textile wastewater safety discharge treatment device based on membrane separation comprises a pretreatment module, a water quality perception module, a main treatment module and a post-treatment module, and is characterized in that the pretreatment module comprises a pretreatment membrane assembly (8), the water quality perception module comprises a water quality detection cylinder (7) communicated with the pretreatment membrane assembly (8) and a water quality sensor arranged inside the water quality detection cylinder (7), and the post-treatment module comprises a catalytic oxidation membrane assembly (13); The main treatment module comprises a plurality of microfiltration membrane assemblies (1), nanofiltration membrane assemblies (2) and reverse osmosis membrane assemblies (3) which are arranged side by side, stock solution inlet ends of the microfiltration membrane assemblies (1), the nanofiltration membrane assemblies (2) and the reverse osmosis membrane assemblies (3) are connected with stock solution branch pipes (4), each stock solution branch pipe (4) is provided with a first electromagnetic valve (6), a plurality of stock solution branch pipes (4) are connected with a stock solution main pipe (5) together, and a water inlet end of the stock solution main pipe (5) is communicated with a water quality detection cylinder (7); The utility model provides a water quality sensor, including microfiltration membrane assembly (1), nanofiltration membrane assembly (2) and concentrate exit end joint of reverse osmosis membrane assembly (3) have concentrate drain (9), all be connected with permeate drain (10) on the permeate exit end of microfiltration membrane assembly (1), nanofiltration membrane assembly (2) and reverse osmosis membrane assembly (3), and all be connected with permeate branch pipe (11) on every permeate drain (10), a plurality of be connected with permeate main pipe (12) on permeate branch pipe (11) jointly, and permeate main pipe's end and catalytic oxidation membrane assembly (13) intercommunication, every all install solenoid valve two (14) on permeate branch pipe (11), every all be connected with permeate connecting pipe (15) between permeate branch pipe (11) and its adjacent stoste branch pipe (4), and solenoid valve three (16) are all installed at permeate connecting pipe (15) both ends, water quality sensor is through micro-control treater and solenoid valve one (6), solenoid valve two (14) and solenoid valve three (16) signal connection.
  2. 2. The textile wastewater safe discharge treatment device based on membrane separation, as claimed in claim 1, wherein the pretreatment membrane assembly (8) comprises a shell (801) and shell heads (802) at the upper end and the lower end, a filter element (17) is fixedly connected between the upper end and the lower end of the shell heads (802), a hollow rotating rod (18) in sealed rotation connection with the upper end shell head (802) is arranged in the middle of the filter element (17), a driving motor (20) in signal connection with a water quality sensor is arranged on the inner wall of the upper end shell head (802), a gear transmission element (21) is connected between the output end of the driving motor (20) and the upper end side wall of the hollow rotating rod (18), and an impurity discharge pipe (22) in internal communication with the filter element (17) is connected in the middle of the lower end shell head (802).
  3. 3. The membrane separation-based textile wastewater safe discharge treatment device according to claim 2, wherein the bottom of the shell head (802) at the lower end is funnel-shaped, and an electromagnetic layer (28) is fixedly inlaid on the surface of the funnel.
  4. 4. A membrane separation-based textile wastewater safety discharge treatment apparatus as set forth in claim 2, wherein said filter member (17) comprises a solid cylinder (1701) fixedly connected to the housing head (802) and a filter cylinder (1702) disposed in the middle, and the filter cylinder (1702) has a continuous curved shape of annular horizontal cross section.
  5. 5. The membrane separation-based textile wastewater safety discharge treatment device as set forth in claim 4, wherein the filter cartridge (1702) comprises a filter layer (17021), and a plurality of elastic bone strips (17022) distributed at equal vertical intervals are fixedly inlaid on the inner wall of the filter layer (17021).
  6. 6. The textile wastewater safety discharge treatment device based on membrane separation, as set forth in claim 4, characterized in that the upper end of the hollow rotating rod (18) is connected with a feeding pipe (19) penetrating through the outside of the shell head (802) in a sealing and rotating manner, a flocculating agent feeding cavity (1801) and a magnetic particle feeding cavity (1802) are arranged in the hollow rotating rod (18), a support (23) is fixedly connected to the side wall of the hollow rotating rod (18), one end of the support (23) far away from the hollow rotating rod (18) is fixedly connected with a solid cleaner (24) contacting with the inner wall of the filter cylinder (1702), and the feeding pipe (19), the hollow rotating rod (18), the support (23) and the interior of the solid cleaner (24) are sequentially communicated.
  7. 7. The device for safely discharging and treating the textile wastewater based on membrane separation according to claim 6, wherein a mixing cavity (2401) is formed in the inner wall of the cleaning and fixing device (24), a stirrer (29) is arranged in the mixing cavity (2401), an ultrasonic vibrator (27) connected with a water quality sensor signal is fixedly embedded on the side wall of the cleaning and fixing device (24) opposite to a filter cylinder (1702), a plurality of symmetrically distributed grooves (2402) are formed in the side wall of the cleaning and fixing device (24) on two sides of the ultrasonic vibrator (27), a spray head (25) is arranged in each groove (2402), a pressurizing pump (26) communicated with the spray head (25) is arranged in the inner wall of the mixing cavity (2401), two symmetrically distributed pre-storing cavities (2403) are further formed in the inner wall of the cleaning and fixing device (24), the two pre-storing cavities (2403) are respectively communicated with a flocculating agent feeding cavity (1801) and a magnetic particle feeding cavity (1802), a plurality of symmetrically distributed grooves (2402) are formed in the side wall of the cleaning and fixing device (24), and the other pre-storing cavity (2401) is communicated with the water quality sensor (24031), and the other electromagnetic sensor (24031) is connected with the water quality sensor (2401).
  8. 8. The membrane separation-based textile wastewater safe discharge treatment device is characterized in that the magnetic flocculant is formed by mixing micron-sized magnetic particles with the flocculant, and the quantitative powder feeder (31) comprises a through cylinder (3101), a powder suction piece (3102) which is connected inside the through cylinder (3101) in a sealing sliding manner, and an electric telescopic rod (3103) which is fixedly connected to the inner wall of a pre-storing cavity (2403) and the output end of which is connected with the powder suction piece (3102).
  9. 9. The membrane separation-based textile wastewater safe discharge treatment device is characterized in that the powder suction piece (3102) comprises two sliding heads (32) which are in sealing sliding connection with the inner wall of a through cylinder (3101), an elastic cylinder (33) fixedly connected between the two sliding heads (32), an electromagnetic layer (34) fixedly connected on the inner wall of the elastic cylinder (33), wherein an air storage cavity (35) is formed in the inner wall of one sliding head (32), and an air pump (36) is arranged at the joint of the air storage cavity (35) and the inner space of the elastic cylinder (33).

Description

Textile wastewater safety discharge treatment device based on membrane separation Technical Field The invention relates to the field of sewage treatment, in particular to a textile wastewater safe discharge treatment device based on membrane separation. Background The membrane separation technology is a technology for realizing selective separation when a mixture of molecules with different particle diameters passes through a semipermeable membrane, wherein the semipermeable membrane is also called a separation membrane or a filter membrane, the membrane wall is full of small holes, the membrane separation technology can be divided into a microfiltration Membrane (MF), an ultrafiltration membrane (UF), a nanofiltration membrane (NF), a reverse osmosis membrane (RO) and the like according to the pore size, and the membrane separation adopts a cross-flow filtration or dead-end filtration mode. The prior membrane separation device adopts a plurality of membrane separation components to treat wastewater, but the selection of membrane materials is single, the combined membrane separation and salt-containing wastewater recovery process with the publication number of CN102774994B and the multi-stage membrane separation device with the publication number of CN108939925A both disclose a scheme for carrying out combined treatment by utilizing the plurality of membrane separation components, and the defect of single membrane material is effectively solved. However, the existing membrane separation device is mainly an integrated fixed process or a split type large-scale equipment combination, the occupied space of the split type large-scale equipment is large, the membranes are required to be cleaned frequently, the treatment capacity is large, the adaptability of the fixed process is poor, the components of the textile wastewater are in fluctuation, the fixed process is filtered and passive, the textile wastewater cannot be flexibly treated to greatly fluctuate the water quality of the textile wastewater, the treatment effect is unstable and the membrane assembly is easy to damage, once a certain section of membrane assembly is polluted or damaged, the machine is required to be stopped, the whole pipeline is required to be disassembled, cleaned or replaced, the maintenance time is long, and the production is influenced. Disclosure of Invention The invention aims at solving the problem of poor adaptability of a fixed process in the prior art by carrying out real-time detection on the water quality of textile wastewater so as to dynamically and flexibly adjust the filtering process. And meanwhile, online cleaning is performed in the pretreatment stage, so that the membrane component is prevented from being blocked by impurities such as fiber scraps, dye particles and the like in the wastewater. In order to solve the problems, the invention adopts the following technical scheme. The textile wastewater safety discharge treatment device based on membrane separation comprises a pretreatment module, a water quality sensing module, a main treatment module and a post-treatment module, wherein the pretreatment module comprises a pretreatment membrane assembly, the water quality sensing module comprises a water quality detection cylinder communicated with the pretreatment membrane assembly and a water quality sensor arranged in the water quality detection cylinder, and the post-treatment module comprises a catalytic oxidation membrane assembly; The main treatment module comprises a plurality of microfiltration membrane assemblies, nanofiltration membrane assemblies and reverse osmosis membrane assemblies which are arranged side by side, stock solution inlet ends of the microfiltration membrane assemblies, the nanofiltration membrane assemblies and the reverse osmosis membrane assemblies are connected with stock solution branch pipes, each stock solution branch pipe is provided with a first electromagnetic valve, the stock solution branch pipes are connected with a stock solution main pipe together, and a water inlet end of the stock solution main pipe is communicated with the water quality detection cylinder; The concentrated solution outlet ends of the microfiltration membrane component, the nanofiltration membrane component and the reverse osmosis membrane component are connected with concentrated solution discharge pipes together, the permeate solution outlet ends of the microfiltration membrane component, the nanofiltration membrane component and the reverse osmosis membrane component are connected with permeate solution discharge pipes, each permeate solution discharge pipe is connected with a permeate solution branch pipe, a plurality of permeate solution branch pipes are connected with a permeate solution main pipe together, the tail ends of the permeate solution main pipes are communicated with the catalytic oxidation membrane component, each permeate solution branch pipe is provided with a second solenoid valve, each pe