More and more companies are choosing professional firms for primary industrial wastewater treatment. However, the question arises: for which industrial sectors is wastewater treatment not only recommended, but essential?
Primary physical-chemical wastewater treatment with reagents can be applied to a very wide spectrum of industrial wastewater:
The efficiency of industrial wastewater treatment depends greatly on the type of wastewater, the production process, analysis of wastewater contamination, and proper selection of wastewater treatment and reagents.
Table 1. Efficiency of Primary Wastewater Treatment with Chemical Reagents
| Parameter | Treatment Efficiency, % | |
| Standard | Maximum | |
| Suspended solids, mg/l | 60–80% | 90 % |
| COD, mgO2/l | 50–70% | 80 % |
| BOD7, mgO2/l | 50–70% | 80 % |
| Fats, mg/l | 60–70% | 80 % |
| Total nitrogen* | 30–50% | 50 % |
| Total phosphorus* | 50–70% | 70 % |
| Metals | Determined on a case-by-case basis | |
* the removal efficiency of total nitrogen (TN) and total phosphorus (TP) depends on the form in which these elements are present in the wastewater – reagents remove phosphorus only in phosphate form and nitrogen – in organic nitrogen form.
During primary treatment, industrial wastewater pollution is reduced to domestic wastewater levels or, by separate agreement, to pollution levels permitting discharge into municipal wastewater networks. In the second stage, residual dissolved pollutant concentrations are not very high, the wastewater is non-toxic, the wastewater is treated in biological treatment facilities and after treatment is discharged into open water bodies.
If your company also specializes in one of the indicated industrial sectors, it is advisable to seek professional assistance and take advantage of the services offered by Ekotakas UAB. The company’s main area of activity is comprehensive solutions for contaminated water treatment, sludge dewatering, odor removal, development, implementation and maintenance of water treatment technologies.
