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Highly effective pretreatment apparatus for refractory dyeing waste water

A pretreatment device, technology for printing and dyeing wastewater, applied in textile industry wastewater treatment, water/sewage treatment, water/sludge/sewage treatment, etc. Effective contact, low operating costs and easy operation

Inactive Publication Date: 2008-11-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of plugging and hardening of fillers in the conventional iron-carbon micro-electrolysis treatment of printing and dyeing wastewater, resulting in short channel flow and difficult operation and high energy consumption in the use of mechanical stirring or compressed air backwashing, and further provide a A high-efficiency pretreatment device for refractory printing and dyeing wastewater

Method used

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  • Highly effective pretreatment apparatus for refractory dyeing waste water
  • Highly effective pretreatment apparatus for refractory dyeing waste water

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specific Embodiment approach 1

[0012] Specific implementation mode one: in conjunction with Fig. 1~ figure 2 Describe this embodiment, the pretreatment device of this embodiment includes water inlet water distribution device 1, water outlet water distribution device 2 and reactor 3; The lower end and the upper end are respectively communicated with the reactor 3 (i.e., the upflow type is adopted, the water is fed from the bottom, and the water is overflowed from the top); the pretreatment device also includes a rotating cylinder 5, a rotating shaft 6, a governor 10, and a motor 11 , support 12, end cap 13, iron-carbon filler 16, sludge discharge valve 17 and a group of mesh partitions 7; the rotating cylinder 5 is installed in the reactor 3, and the upper end of the reactor 3 is equipped with an end cap 13 (detachable), the end cover 13 has a central hole 14, the input end of the rotating shaft 6 is connected to the output end of the motor 11 through the governor 10, and the motor 11 is connected to the rea...

specific Embodiment approach 2

[0013] Specific Embodiment 2: This embodiment is described with reference to FIG. 1 . In this embodiment, the holes 15 on the outer wall of the rotating cylinder 5 are evenly distributed along the entire outer wall of the rotating cylinder 5 , which can improve the pretreatment efficiency. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0014] Specific embodiment three: the present embodiment is described in conjunction with Fig. 1, the filling ratio of the iron-carbon filler 16 of the present embodiment is 30%~80% of the effective volume of the rotating cylinder 5, and is completely submerged below the water surface of the reactor 3. Other components and connections are the same as those in the first embodiment.

[0015] Embodiment 4: This embodiment is described in conjunction with FIG. 1 . The iron-carbon filler 16 of this embodiment is filled in the rotating cylinder 5 according to the volume ratio of 1:3 to 5:4, which has a better adsorption effect. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 3.

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Abstract

The invention relates to a high-efficient pretreatment device for an undegradable dye printing wastewater, which relates to an industrial wastewater pretreatment device. The invention solves the problems that the prior iron-carbon micro-electrolysis method for treating the dye printing wastewater has channeling and short flow caused by the blocking and hardening of fillers and has difficult operation, large energy consumption, etc. in backwashing by adopting mechanical stirring or air compression. A rotary cylinder body is arranged inside a reactor; an input end of a rotating shaft is connected with an output end of an electromotor by a speed governor; an output end of the rotating shaft is arranged inside an axle hole of the bottom end face of the reactor; a set of netty clapboards are arranged on the rotating shaft and inside the rotary cylinder body; a sludge discharge groove is arranged on the reactor; a plurality of pores are arranged on the outer wall of the rotary cylinder body; and the rotary cylinder body is provided with iron-carbon fillers inside. The high-efficient pretreatment device has simple operation, small power consumption, high reaction efficiency and good pretreatment effect and can effectively carry out pretreatment aiming at the undegradable, high-concentration and high-chroma dye printing wastewater, thereby substantially reducing the concentration of organism and effectively improving the biodegradability of wastewater.

Description

technical field [0001] The invention relates to an industrial waste water pretreatment device, especially a pretreatment device for printing and dyeing waste water containing high concentration, high chroma and refractory biodegradable organic matter. Background technique [0002] Printing and dyeing wastewater has the characteristics of high concentration, deep color, complex organic components, high content of inorganic salts, high toxicity, and poor biodegradability. It has always been one of the difficulties in wastewater treatment at home and abroad. Due to the variety of dyes produced and the development towards the direction of anti-photolysis, anti-drug, and anti-biological oxidation, it is increasingly difficult to treat wastewater. Due to the poor biodegradability of the wastewater, conventional biological methods cannot be used to treat it, and the physical and chemical methods are used, and the treatment cost is too high. At present, it is usually pretreated by ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F103/30
Inventor 祁佩时陈战利李辉刘云芝
Owner HARBIN INST OF TECH
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