Textile Dyeing Wastewater Treatment

REC has extensive experience in engineering design, construction and operation debugging in the field of industrial pollution prevention and control engineering, especially in the fields of difficult-to-degrade industrial wastewater treatment, deep treatment and reuse of wastewater, and biochemical treatment and efficiency enhancement.

CUSTOMER DEMAND

REC adopts “one enterprise one policy” design scheme, according to the characteristics of water quality and quantity, combined with the actual situation of the enterprise, adopts special functional “biological efficiency” technology, specifically to improve the biochemical treatment efficiency and reduce the operating costs of the enterprise. On the basis of secondary treatment, the company designs “improved Fenton” deep treatment process to improve the removal efficiency of difficult biodegradable organic matter.

Textile printing and dyeing industry is a large industrial wastewater discharge, textile wastewater is mainly raw material steaming, rinsing, bleaching, sizing and other processes generated in the wastewater.
Printing and dyeing wastewater is washing and dyeing, printing, sizing and other multi-process wastewater, textile printing and dyeing wastewater is characterized by a high concentration of organic matter, complex composition, high and variable chromaticity, pH changes in large, large changes in the amount of water and water quality is difficult to deal with industrial wastewater.
Wastewater mainly contains dirt on textile fibers, oils and fats, salts, as well as a variety of additional slurries, new dyes, surfactants, auxiliaries, acids and alkalis in the process.

WASTEWATER TREATMENT PROCESS

WHAT AIT TREATMENT DID WE USE?

“Improved Fenton” Deep Treatment Technology

This technology complements the biochemical treatment of wastewater, has a wide range of applications, low treatment cost and good treatment effect.
Through precise control of reaction conditions (reaction pH, ORP, time, dosing type, dosing amount, dosing sequence, etc.), it realizes “molecular carboxylation” of organic pollutants in wastewater, and the pollutant molecules of the carboxylated molecules are combined with the organic pollutants of the wastewater in the mild reaction conditions and the catalytic reaction and the added dosing. The “carboxylated” pollutant molecules, under mild reaction conditions, then complex with the metal salt ions (Fe³⁺, Al³⁺, etc.) generated by the catalytic reaction and the addition of metal salts to generate metal salt complexes of carboxylic acid of larger molecular weight, whose water solubility is greatly reduced. The solid-liquid separation facility then realizes the conversion and separation of dissolved organic pollutants to insoluble substances in the wastewater, thus realizing the purpose of wastewater purification.
The essence of this technology to remove pollutants in wastewater is the dissolved organic pollutants into insoluble substances (sludge), is the transfer of pollutants from the liquid phase to the solid phase of the process; conventional Fenton oxidation technology to remove pollutants in wastewater is the essence of dissolved organic pollutants in the C-C bond interruption, will be converted to CO₂, a pollutant from the liquid phase to the gas-phase transfer process. Two different pollutant transformation pathway, so that the reaction process consumption of hydrogen peroxide has a big difference, the depth of the technology treatment technology in the consumption of hydrogen peroxide is only 10-20% of the conventional Fenton oxidation depth of treatment technology.

Developed by REC @ Eco-friendly

Biochemical Treatment "Bio-Efficiency" Technology

Based on years of experience in industrial wastewater design, commissioning and operation, the R&D team has developed a biological treatment technology to enhance the biochemical treatment of difficult-to-degrade chemical wastewater.
The technology relies on efficient microbial synergists and process control methods to establish a new microbial system with high degradation efficiency and strong impact resistance.
High-efficiency microbial synergist is a composite system of “bacteria and enzyme” designed for the efficiency enhancement of the biochemical treatment system of difficult-to-degraded industrial wastewater, combining the functions of biological enzymes to remove and detoxify toxins, functional microorganisms exogenous supplementation, and high-efficiency microorganisms immobilization, etc., which has the functions of significantly improving the living environment of microorganisms of the biochemical system, greatly enhancing the population and quantity of functional microorganisms of the biochemical system, and greatly increasing the efficiency of biochemical treatment. It can significantly improve the living environment of microorganisms in the biochemical system, greatly increase the population and number of functional microorganisms in the biochemical system, and greatly increase the mass transfer speed and degradation rate of difficult-to-degrade pollutants in wastewater.

Developed by REC @ Eco-friendly

Wastewater Biochemical Treatment in Depth Nitrogen Removal Technology

This technology is based on the optimization and improvement of biological denitrification denitrification technology, thus forming a kind of wastewater biochemical high-efficiency denitrification technology with fine control, wide application range and high denitrification efficiency.
This technology is based on wastewater activated sludge biochemical treatment process, through the design of denitrification reaction conditions (nitrification liquid reflux ratio, sludge reflux ratio, reflux point, anoxic tank mixing intensity, alkalinity control, temperature control, etc.), as well as the selection of denitrification carbon source, multi-point spatial injection design, significantly improve the reaction efficiency of denitrification carbon source, so that the total nitrogen in wastewater can be efficiently removed.

Developed by REC @ Eco-friendly

Areas of Application of the Technology

Pulp paper, textile dyeing, pesticides pharmaceuticals, steel coking, garbage leachate and other industrial waste. It can efficiently remove COD, color, total phosphorus, suspended solids and other pollutants in wastewater. Can be newly built, can also be used in the existing flocculation and sedimentation, air flotation and other tertiary treatment facilities for the renovation of the building