Advanced treatment methods for integrated equipment for industrial and chemical wastewater treatment

Reclaimed water refers to the non-potable water quality that has been treated from urban sewage or domestic sewage and has reached a certain standard for reuse. Its water quality lies between that of purified water and sewage. The reuse of reclaimed water involves treating sewage and reusing it as a renewable resource. With the continuous improvement of wastewater discharge standards in the industrial and chemical industry and the increasing shortage of water resources, more and more enterprises choose industrial and chemical wastewater treatment equipment to treat wastewater and reuse it in production. Among them, the integrated wastewater treatment equipment in the industrial and chemical industry not only greatly reduces production costs but also contributes to environmental protection.

The recycled cooling water for primary treatment is confronted with poor water quality, high temporary hardness, and the presence of pollutants such as ammonia nitrogen, phosphate, and microbial sludge, which can easily lead to chemical and biological scaling in the cooling water system and cause equipment corrosion and other problems. At present, the commonly used reclaimed water reuse treatment technologies at home and abroad include simple filtration treatment, lime coagulation clarification filtration treatment, adsorption oxidation treatment and membrane treatment, etc. The methods for advanced sewage treatment are selected based on the water quality after secondary treatment.

Simple filtration treatment

For enterprises that do not have very high requirements for water quality after secondary treatment, this process is generally not adopted. Usually, mechanical filtration and disinfection are carried out to remove the residual floating matter. Reduce the suspended solids to less than 10mg through filtration. The purpose of disinfection is to prevent the growth of microbial membranes or algae in the reclaimed water system.

Process features of the integrated equipment for petrochemical wastewater treatment

1. Strong anti-pollution capability

In the process of wastewater treatment and reuse in this system, the modified RO membrane filtration device is the core part of the system and is of vital importance. After being treated by the modified RO membrane separation and recovery device, the effluent can remove the vast majority of inorganic salts, organic substances, microorganisms and bacteria, etc., and can meet the requirements of "Water Quality for Industrial Water Reuse of Urban Sewage".

2. Cost savings

As the effluent quality of the modified membrane separation and recovery system can reach the standard of industrial tap water with a conductivity of about 150us/cm, the daily use of tap water in petrochemical production will be reduced by more than 60%, significantly lowering the water cost of tap water and the operating cost of the original chemical water system. At the same time, it can save more than 60% of the wastewater discharge cost. This significantly reduces the investment and operation costs of wastewater treatment stations.

3. Reduce pollution

This system can not only effectively save water resources, but also reduce the discharge of sewage, alleviate pollution to surrounding water bodies and improve the living environment for human beings

How to ensure that the wastewater treated by the integrated petrochemical wastewater treatment equipment in Chengdu meets the national discharge standards while also reducing the cost input of enterprises is a difficult problem that petrochemical enterprises need to solve

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