Due to India's agricultural-based economy, the fertilizer industry is a vital manufacturing sector. For a variety of highly polluting chemical industries such as fertilizer, distillery, dyes and pigments, textiles, and so on, industrial wastewater treatment is a challenging problem.
Oil, arsenic, ammonia, urea, phosphate, and fluoride are major pollutants in fertilizer waste water that must be treated. From the standpoint of environmental pollution, wastewater treatment is a serious issue in such a complicated fertilizer manufacturing plant.
Let’s understand CPCB guidelines for fertilizer industry effluent treatment plants.
Sources of effluent from fertilizer industries
Wastewater containing nitrogen compounds is due to the nitrogenous fertilizer sector by ammonia plants, urea plants, ammonium nitrate and calcium ammonium nitrate plants, ammonium sulphate plants, and ammonium chloride plants.
In case of phosphate fertilizer business, wastewater is produced by phosphoric acid plant, single superphosphate plant, triple superphosphate plant, nitrophosphate plant, ammonium phosphate plant, and nitric acid plant.
In what quantity does fertilizer industry produce wastewater?
The amount of effluent emitted from fertilizer factories varies greatly based on the raw material utilized, the end product obtained, and the fertilizer production process used.
A 1000 tonnes per day urea plant with a recirculating cooling water system and all the auxiliary facilities, required for production generally discharges 8000 to 12000 m3/day wastewater, whereas a phosphatic fertilizer plant with a recirculating cooling water system and auxiliary facilities, and a daily fertilizer production of approximately 100 tonnes of phosphorus pentoxide (P2O5) discharges, 3000 to 6000 m3/day sewage.
CPCB Guidelines for fertilizer industry effluent treatment plants
1: Ammonium Nitrate Fertilizers
|
Parameter |
Value |
|
pH |
6.5-8.5 |
|
Suspended Solids |
100 |
|
Oil and grease |
10.0 |
|
Ammonical Nitrogen |
50 |
|
Total Kjeldhal Nitrogen |
75 |
|
Free Ammonical Nitrogen |
2.0 |
|
Phenolic Compounds |
5 |
2: Straight Phosphatic Fertilizer Plant
|
Parameter |
Value |
|
pH |
6.5-8.5 |
|
Suspended Solids |
100 |
|
Oil and grease |
10.0 |
|
Fluoride |
10.0 |
|
Dissolve Phosphate |
5.0 |
3: Complex Fertilizer Plant and NP/NPK (N-Nitrogen, P-Phosphorus and K-Potassium)
|
Parameter |
Value |
|
pH |
6.5-8.5 |
|
Suspended Solids |
100 |
|
Oil and grease |
10.0 |
|
Ammonical Nitrogen |
50 |
|
Total Kjeldahl Nitrogen |
75 |
|
Free Ammonical Nitrogen |
4.0 |
|
Nitrate Nitrogen |
20 |
|
Dissolved Phosphate |
5.0 |
|
Fluoride |
5 |
Note:
1. Chromium salt shall not be used in cooling tower as algaecide.
2. The effluent shall be tested for vanadium and arsenic once a year, and the results shall be submitted to the relevant State Pollution Control Board, or Pollution Control Committee.
In Schedule VI, Waste Water Generation Standards Part B, for serial number 11, Fertilizer and entries relating to it, the following serial number and entries shall be substituted:
|
Naphtha, Natural Gas & Mixed Feedstock (Naphtha + Natural Gas) Based (Straight Nitrogenous Fertilizer) |
3.0 m3 /tonne of Urea or equivalent produced |
|
Straight Phosphatic Fertilizer (Single Super Phosphate (SSP) & Triple Super Phosphate (TSP) excluding manufacturing of any acid |
0.4 m3 /tonne of SSP or TSP |
|
Complex Fertilizer |
Standards of nitrogenous and Phosphatic fertilizer are applicable depending on the primary product. |
How can we assist?
Netsol Water offers a wide range of sophisticated wastewater treatment solutions, such as water softeners, wastewater treatment plants, sewage treatment plants, RO Plants, as well as effluent treatment plants for various industries, including fertilizer manufacturing sector.
Netsol Water is Greater Noida-based leading water & wastewater treatment plant manufacturer. We are industry's most demanding company based on client review and work quality. We are known as best commercial RO plant manufacturers, industrial RO plant manufacturer, sewage treatment plant manufacturer, Water Softener Plant Manufacturers and effluent treatment plant manufacturers. Apart from this 24x7 customer support is our USP. Call on +91-9650608473, or write us at enquiry@netsolwater.com for any support, inquiry or product-purchase related query.
