A study on treated meat factory wastewater effluents as a possible source of stable nitrogen fertilizer

Date

10-1985

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nieva T. Librojo

Abstract

Raw wastewater and wastewater effluents at different stages of treatment from a multistage lagoon system serving a treated meat factory were analyzed for their pH, nitrogen content, organic matter loading and dissolved oxygen in view of evaluating their suitability as a nitrogen fertilizer source.

The data obtained during the two months of monitoring the lagooning operation showed a considerable variation in the characteristics of the individual treatment cell effluent. The main characteristics like permanganate value and total kjeldahl nitrogen were higher in raw wastewater while parameters like dissolved oxygen, nitrite-. nitrogen and nitruia-nitrogen were maximum at the polishing ponds. These attest that the quality of raw sewage entering the plant was modified to a significant extent by treatment. The pH values failed to reveal significant changes among raw wastewater and effluents.

Stabilization of nitrogen components of wastewater is attained at the final stages of treatment. Nitrogen losses that accompany stabilization of wastewater during treatment can be attributed to volatilization of ammonia, nitrogen immobilization and denitrification.

Nitrification and denitrification reactions are significantly affected by organic matter loads and dissolved oxygen concentration. Controlled experiments showed that high aeration favors nitrification and high organic matter loads favors denitrification.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1985 C4 P37

Document Type

Thesis

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