BOD5

AcronymDefinition
BOD5Biological Oxygen Demand in 5
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The physiochemical investigation included pH, BOD5, total suspended solids (TSS), COD, total Kjeldahl nitrogen (TKN), total phosphate (TP) whereas the biological parameters investigated include, fecal coliform and total coliform.
The Streeter and Phelps model in the trout study case showed that the receiving water body needs between 8 minutes and 1.9 hours to recover from the loading and return to the BOD5 level prior to dumping.
Abbreviations Cr: Water retention capacity Is: Structural instability index Da: Bulk density P: Porosity K (h) sat.: Saturated hydraulic conductivity at potential difference CE: Electric conductivity MO: Organic matter TEM: Trace Element Metals MES: Suspended matter BOD5: 5-Day biological oxygen demand COD: Chemical oxygen demand Abd: Abundance Juv.: Juvenile Adt.: Adult Biom.: Biomass Endo.: Endogeic Epig.: Epigeic Anec.: Anecic Ap t: Aporrectodea trapezoides Ap r: Aporrectodea rosea Ap c: Aporrectodea caliginosa Am: Allolobophora molleri P ant: Proctodrilus antipai antipai Oc: Octodrilus complanatus E t: Eiseniella tetraedra tetraedra SDI: Shannon Biodiversity Index Dj: Djebel or mountain Wed: effluent.
Pollution from industrial wastewater: industrial enterprises in Algeria delivered each year over 220 million [m.sup.3] of water used and leads to the formation of about 55 000 tonnes of BOD5 and pour 135 tons of suspended solids and discard 8 thousand tons of nitrogenous material and as domestic sewage also reject nitrogen contents which leads to pollution [9].
with target 300, acceptance tolerance 200, indeterminacy tolerance 100, and rejection tolerance 300 for the first objective [z.sub.1], and also with target 0.015, acceptance tolerance 0.1, indeterminacy tolerance 0.05, and rejection tolerance 0.2 for the second objective [z.sub.2], where [x.sub.i] is the percentage BOD5 (to remove 5 days BOD) after each step.
Influent and effluent COD and BO[D.sub.5] ratio Average COD Average BOD5 Average (mg/L) (mg/L) COD/BO[D.sub.5] Range Mean Range Mean Influent 1700-2023 1861 901-1025 963 1.93 Effluent 140-1018 579 511-65 288 2.01
The removal efficiencies of BOD5 showed relatively high over 85% in all the reactors, while the highest removal efficiency of [COD.sub.cr] was only 71% at R1, which was because a portion of inert organic compounds was not counted in [BOD.sub.5].
TDS: total dissolved solids, SS: suspended solids, DO: dissolved oxygen, BOD5: biochemical oxygen demand, P[O.sub.4.sup.-3]: phosphate, N[O.sup.3-]: nitrate; CL: chlorides; SU: sulphates.
Plants were irrigated with treated wastewater, characterized by pH = 6.9, EC = 4.670 mS/cm, COD (Chemical Oxygen Demand) = 168 mg[O.sub.2]/l and BOD5 (Biochemical Oxygen Demand) = 40 mg [O.sub.2]/l.
High COD and BOD5 can also cause inhibition of germination as reported by Samuel and Muthukkaruppan (2012) for rice and Mehta and Bhardwaj (2012) for Vigna radiata and Cicer arientinum.
is a unit of measure of the average organic biodegradable load, this being a five day biochemical oxygen demand (BOD5) of 60 gr of oxygen per day