Technology for deep-treating printing and dyeing wastewater by attapulgite catalyst

An attapulgite and printing and dyeing wastewater technology, applied in the field of environmental engineering, can solve the problems of difficulty in meeting production and environmental protection requirements, COD removal rate of less than 30%, poor biodegradability of printing and dyeing wastewater, etc. effect, improve the efficiency of biochemical reactions, the ability to degrade organic matter, and improve the effect of biochemical treatment

An attapulgite and printing and dyeing wastewater technology, applied in the field of environmental engineering, can solve the problems of difficulty in meeting production and environmental protection requirements, COD removal rate of less than 30%, poor biodegradability of printing and dyeing wastewater, etc. effect, improve the efficiency of biochemical reactions, the ability to degrade organic matter, and improve the effect of biochemical treatment

CN106630481AInactive Publication Date: 2017-05-10安徽政涛环保科技有限公司
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  • Technology for deep-treating printing and dyeing wastewater by attapulgite catalyst
  • Technology for deep-treating printing and dyeing wastewater by attapulgite catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method for advanced treatment of printing and dyeing wastewater by attapulgite catalyst in this embodiment is as follows:

[0030] 1. Collect the printing and dyeing wastewater after the initial biochemical treatment to the adjustment tank, and adjust the water volume and water quality. The adjustment time is controlled at more than 8 hours, so that the influent can be mixed evenly;

[0031] 2. The printing and dyeing wastewater adjusted by water volume and water quality shall be pumped according to 150m 3The flow rate per hour is pumped into the coagulation sedimentation tank, mixed with coagulant for coagulation and sedimentation treatment; the pH value of printing and dyeing wastewater is 6.0, PAC and PAM are used as coagulants, and the proportion of PAC is 0.01-0.03% of the wastewater quality Dosing, PAM is added according to the proportion of 0.001-0.003% of the wastewater quality (PAC and PAM are respectively configured into a solution with a mass concentratio...

Embodiment 2

[0039] The method for advanced treatment of printing and dyeing wastewater by attapulgite catalyst in this embodiment is as follows:

[0040] 1. Collect the printing and dyeing wastewater after the initial biochemical treatment to the adjustment tank, and adjust the water volume and water quality. The adjustment time is controlled at more than 8 hours, so that the influent can be mixed evenly;

[0041] 2. After adjusting the water volume and water quality, the printing and dyeing wastewater is pumped according to 250m 3 The flow rate per hour is pumped into the coagulation sedimentation tank, mixed with coagulant for coagulation and sedimentation treatment; the pH value of printing and dyeing wastewater is 5.5, PAC and PAM are used as coagulants, and the proportion of PAC is 0.01-0.03% of the wastewater quality Dosing, PAM is added according to the proportion of 0.001-0.003% of the wastewater quality (PAC and PAM are respectively configured into a solution with a mass concentr...

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Abstract

The invention discloses a technology for deep-treating printing and dyeing wastewater by an attapulgite catalyst. The technology comprises the following steps: collecting the wastewater after the first biochemical treatment to a regulating tank, sending to a coagulative precipitation tank after the water volume and water quality regulation, performing the coagulating sedimentation treatment to remove suspended matter and partial organic matter, sending the printing and dyeing wastewater to an anaerobic tank for acidized hydrolysis, hydrolyzing the macromolecular organic matter to the micromolecular organic matter so as to improve the biodegradability, treating the effluent by an anoxic-oxic method under the existence of the attapulgite, reaching the standard and discharging after removing the organic matter, the chromaticity and the ammonia nitrogen. The technology is capable of effectively improving the biochemical reaction efficiency and organic matter degradation ability, and reducing the wastewater treatment cost. The process operation is convenient.

Description

technical field [0001] The invention relates to a treatment technology for printing and dyeing wastewater, in particular to a technology for advanced treatment of printing and dyeing wastewater with an attapulgite catalyst, which belongs to the technical field of environmental engineering. Background technique [0002] Printing and dyeing wastewater is wastewater discharged from printing and dyeing factories that mainly process cotton, hemp, silk, wool, chemical fibers and their blended products. Printing and dyeing wastewater has a large amount of water, 100-200 tons of water is consumed per ton of textile printing and dyeing, and 80-90% of it becomes wastewater. The printing and dyeing industry is a large discharge of industrial wastewater. According to incomplete statistics, the daily discharge of printing and dyeing wastewater in the country is 3×10 6 ~4×10 6 m 3 . One of the main obstacles to the development of the textile industry is the issue of environmental prot...

Claims

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Application Information

Patent Timeline
10 May 2017
Publication
CN106630481A
IPC
C02F9/14; B01J21/18; C02F103/30
CPC
C02F9/00; B01J21/16; B01J21/18; B01J23/10; C02F2103/30; C02F3/30; C02F11/127; C02F11/122
Inventors
张国生; 董涛