Biological Wastewater Treatment - Nutrients

Biological Wastewater Treatment Problems? Yara delivers the nutrients you need. Biological wastewater treatment uses bacteria to degrade and decompose organic materials contained in waste water.

Industrial wastewater often contains large amounts of organic matter (BOD, COD).This can be removed by a biological wastewater treatment process assuming, that there is the sufficient amount and the proper type of nutrients available, along with other factors that influence the process’ biology. If your biological wastewater treatment process is not performing, it is critical to target and fix the root cause: your system’s microbial community.

Industrial wastewater often lacks sufficient amount of nitrogen (N) and phosphorus (P) nutrients for microbial communities to achieve the biological activity level required for biological purification. It is therefore necessary to add extra nitrogen and phosphorous to get the process to work properly.

Which products are the best suited to your facility and your biological purification process?

This depends on variable such as your purification process type, system size, system load compared to the dimensioning, dosing equipment available, etc.

With over 100 years of pioneering nitrogen chemistry and over 20 years’ experience working with the waste water treatment sector, you can count on Yara’s know-how to help solve your problems.

Yara experts work with you to find the optimal solution for your process. Proper nutrient selection and dosage benefits may include the following.

Economic benefits of nutrient dosage in biological wastewater treatment processes

Reduced operating and maintenance costs.
Reduced need for expensive capacity expansion investments.

Environmental benefits of nutrient dosage in biological wastewater treatment processes:

Low emissions of Nitrogen and Phosphorus
Environmental benefits through reduced emissions to the recipient

Process optimisation benefits of nutrient dosage in biological wastewater treatment systems

Increased treatment efficiency due to higher activity in the biomass and improved sludge separation.
Easier and better sludge dewatering due to reduced growth of filamentous bacteria, improved flocculation and higher sludge concentration.
Stable operation and easier process monitoring.

Yara delivers the nutrients you need.

Yara can help you identify the cause of your biological wastewater treatment process problem

There are many factors that influence the optimal biology in a biological purification process. One of the most important factors is the availability of nutrients. What is the right amount of nutrients for your process? This depends on the amount of organic material that is biodegradable and on your system's operating conditions.

Biological wastewater treatment problems commonly related to:

insufficient nutrients	too much nutrients
Reduced cleaning effect Extensive growth of unwanted bacteria Excess of extracellular polymer production Hydrolysis of sludge Long start-up time and reduced gas production in anaerobic systems	Emissions of nutrients to the recipient Unwanted biological growth Luxury uptake of phosphorus Increased sludge production Increased chemical costs

Could your industrial wastewater treatment process performance be optimised?

Industrial wastewater can vary greatly in both ints composition and its need for the addition of external nutrients. Municipal wastewater usually contains more than enough nitrogen and phosphorus for optimal biology.

The following industry sectors produce effluents that may need the addition of external nutrients to a greater or lesser extent:

Pulp and Paper production (wood)
Oil Refining / petrochemical industry
Brewery
Fruit and vegetable processing
Textile Industry
Chemical industry
Pharmaceutical industry
Condensation
De-icing fluid from airports

Scisol® - Yara's range of nutrients specifically developed for biological wastewater treatment

The Scisol® product range contain either nitrogen or different ratios of nitrogen and phosphorus. Scisol® is easy to use:

Liquid for easy dosage
Scisol® contains all the nutrients your microbial community needs, so can dose one product instead of two

Scisol® also contains nitrate which can provide several benefits in the process.

In additional to Scisol®, Yara provides products with different content of nitrogen and phosphorus, in liquid or solid form and in bulk or packaged formats.

Our clients currently use a full range of Yara nutrients:

	Total amount of nitrogen(N) and phosphorous (P) available in product (expressed as%)
	Total-N	Urea-N	NH4-N	NO3-N	P04-P
Urea	46	46	0	0	0
Urea Solution 40%	19	19	0	0	0
Ammonia Solution, 24.5%	19	0	19	0	0
Ammonia Solution, 25%	19	0	19	0	0
Scisol N	30	15	8	8	0
Phosphoric Acid, 75%	0	0	0	0	24
Phosphoric Acid, 72%	0	0	0	0	23
Scisol NP5	21	15	3	3	4

We also can provide you with micro-nutrients.