Many manufacturing industries process by-products into wastewater termed as "effluent", before releasing it into the environment. This wastewater, i.e. untreated effluent, is converted into treated effluent with the aid of a Common Effluent Treatment Plant (CETP). The clean water is then securely discharged into the environment. However, there are various types of Common Effluent Treatment Plants.
What are the various types of Common Effluent Treatment Plants?
CETPs are categorized into two types:
- Homogeneous: Industries in this industrial region produce comparable commodities, for example, tanneries, paper, etc.
- Heterogeneous: Industries that produce wildly disparate items are grouped together in such CETPs, for example,chemical, dairy, soft drinks, medicines, and so on.
Since, the diverse sectors involved, make it difficult to define the properties of the wastewater, a heterogeneous form of CETP is a better option.
Types of CETPs, based on their applications
1: CETP in Synthetic Organic Chemical Industry
When the CETP includes chemical industries or numerous industrial categories, the complexity of the O&M is significant, necessitating particular expertise. It is widely believed that Synthetic organic industries must conduct qualitative assessments, of their effluent streams and separate the wastewater generated into the following streams:
· Inorganic streams,
· Highly concentrated effluents,
· Non-biodegradable/toxic substances,
· A mixture of organic and inorganic streams.
This CETP focuses on the separation of suspended particles and organic waste, using biological treatment systems. As a result, only those streams that can be handled at CETPs may be delivered, while others require special treatment at the industrial level.In other words, more treatment is necessary, either at CETP or at individual member industries.
2: CETP in tannery industries
In most cases, effluent from soaking and pickling is collected separately, and sent to evaporation ponds. In the case of chrome tanning, wastewater is routed through chrome recovery, and subsequently to evaporation ponds.
CETP is required in this sector for:
· Member industries have implemented waste reduction/ cleaner technologies,
· Floating and easily settleable solids pretreatment,
· Physicochemical treatment-lime and alum quality.
3: CETP in textile industries
Because of the emission of undesired dye effluents, textile industries are responsible for one of the world's biggest environmental pollution concerns. In textile wastewater, dyes are mixed with various contaminants in varied amounts. As a result, environmental regulations usually mandate textile mills to treat effluent, before dumping it into receiving watercourses.
Dye effluents have high levels of colour, pH, suspended solids (SS), chemical oxygen demand (COD), biochemical oxygen demand (BOD), metals, temperature, and salts. As a result, heterogeneous CETP is used to treat these effluents.
A CETP is an excellent choice for all industries in an estate. However, in order to build the most appropriate system, it is important to undertake an assessment of the quality, and quantity of effluent created.
Why should you choose Netsol Water for your CETP operations?
Our company specializes in providing CETP operation and maintenance services, to medium-sized businesses. We provide:
- Well-trained, competent, and experienced operator with expert supervisor, to provide smooth day-to-day troubleshooting and maintenance.
- Operators are also instructed to keep all records, so that early indicators of irregularity can be identified.
- Chemical use should be kept to a minimum in order to enhance efficiency.
- To meet pollution control board outlet standards.
Preventive maintenance is performed to avert serious breakdowns.