Results from studies of septic tank effluent quality indicated that the effluent is of poorer quality than currently suggested by guidelines.
Quality of septic tank effluent.
Quality of the discharged effluent.
Septic tank effluent ste quality in pnrs ii biofilter performance evaluation the two highly important input factors are the composition of septic tank effluent ste and the system flowrates.
Septic tank additives have been promoted by some manufacturers with the aim to improve the effluent quality from septic tanks reduce sludge build up and to reduce odors.
It is important to remember that the effluent discharged from a septic tank or sewage treatment plant no matter how well treated is not clean water it is sewage effluent and presents a risk to people and the environment due to the bacteria and viruses still present.
Residential septic tank waste strength septic tank effluent will vary in quality according to the characteristics of the wastewater and condition of the tank.
The preference for septic tank systems use is partly because of their relative simplicity low costs and treatment capabilities however their performances is highly variable and they often produce effluent with varied quality septic tank systems often fail due to aging user neglect poor management and lack of maintenance posing risks to.
It has been verified in sample events 1 and 2 that target flow rates have been successfully achieved.
Our septic tank effluent filters are perfect examples where innovation and quality come together.
However insufficient nutrient data is presently available to assess nutrient loads.
Effluent leaving a conventional septic tank one not equipped with an effluent filter typically has concentration of 150 to 250 mg l for bod 5 40 to 140 mg l for tss and 20 50 mg l for.