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Investigation Of Anaerobic Processes In Septic Tank As A Wastewater Treatment Option
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Since
all natural waterways contain bacteria and nutrients, almost any waste
compounds introduced into such waterways will initiate biochemical
reactions (such as shown above).
Those biochemical reactions create
what is measured in the laboratory as the biochemical oxygen demand
(BOD). Such chemicals are also liable to be broken down using strong
oxidizing agents and these chemical reactions create what is measured in
the laboratory as the chemical oxygen demand (COD). Both the BOD and,
COD tests are a measure of the relative oxygen-depletion effect of a
waste contaminant. Both have been widely adopted as a measure of
pollution effect.
The BOD test measures the oxygen demand of
biodegradable pollutants whereas the COD test measures the oxygen demand
of oxidizable pollutants.
Wastewater treatments are numerous
processes that can be used to clean up wastewaters depending on the type
and extent of contamination. Wastewater can be treated in wastewater
treatment plants which include. Physical, chemical and biological
treatment processes. Municipal wastewater is treated in sewage treatment
plant (which may also be referred to as wastewater treatment plant),
Agricultural wastewater may be treated in agricultural wastewater
treatment processes, whereas industrial wastewater is treated in
industrial wastewater treatment processes.
Treated wastewater can
be reused as drinking water in industry (cooling towers), in artificial
recharge of aquifers, in agriculture and in the rehabilitation of
natural ecosystems (for example in Florida's everglades).
There are
numerous benefits of using recycled water for irrigation, including the
low cost when compared to other-sources, particularly in an urban area,
consistency of supply (regardless of season, climatic conditions and
associated, water restrictions) and general consistency of quality.
Irrigation of recycled wastewater is also considered as a means for
plant fertilization and particularly nutrients supplementation. (CSL
London Olympics waste preview).
1.2 Objectives of the study
The main objective of this study includes the following;
1. Determination of acidity, alkalinity and pH contents in a waste water
2. Determination of biochemical oxygen demand (BOD) in wastewater
3. Determination of chemical oxygen demand (COD) in
wastewater
4. Determination of chemical constituents in a wastewater
5. Modern management of wastewater
1.3 Significance of the study
This
project aims at determining the anaerobic processes taking place in the
septic tank as a wastewater treatment option. Also to determine if
septic tank is a reliable waste water treatment plant.
1.4 Scope of the Study
This
project is based on the determination of the anaerobic processes taking
place in the septic tank. Also to determine if the waste water
treatment is really treating the waste water well. And also to check the
level of contaminants present in the septic tank and soakaway pit on
the following parameters through physical and chemical analysis.
Physical analysis: temperature, pH, Conductivity and Turbidity. Chemical
analysis: biochemical oxygen demand (B.O.D), chemical oxygen demand
(C.O.D), acidity, alkalinity, Total Solid, Dissolved solid, Suspended
Solid, Total Hardness, Copper, Iron, Lead, Chloride, Sulphate, Calcium/
magnesium and Phosphorus present in wastewater.
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ABSRACT - [ Total Page(s): 1 ]This project, aimed at investigating the anaerobic processes in septic tank as a waste water treatment option using waste water from septic tank and Soakaway as sample A and B respectively. It was observed that after the analysis, sample A (septic tank which has fresh waste water) has higher value in conductivity =1708us/ cm3, Total slid = 17490mg/l, Dissolved solid (16420mg/l), COD = (106mg/l), DO = (0.6883mg/l) and BOD = (106.6883mg/l) compared to sample B (Soakaway which contains waste wate ... Continue reading---
