TREATMENT OF WASTE WATER FROM CATFISH AQUACULTURE PONDS USING PEAT BASED MATERIALS PART I. WASTE WATER TREATMENT BY BATH CONDITION

Abstract

   The waste water of catfish aquaculture ponds contains the high amount of  organic substances and nutrients. The criteria including DO, BOD5, COD, TDS, NH4+, total amount of phosphor and nitrogen exceed allowable threshold many times. The materials with specific surface area of 137.47 m2.g-1 prepared from peat was used to remove contaminants by bath condition. The water after treatment met the requirement of A level in QCVN 40:2011/BTNMT. Several criteria reduced almost completely such as the total amount of phosphor and nitrogen. The relevant conditions for treatment set as 2.0 gram of adsorbent in 1.0 L of waste water with equilibrium adsorption time. The removal efficient for contaminants reached 79.07%. It is possible to use the obtained material for treating  the waste water of catfish aquaculture ponds in continuous flow condition.

Keyword: adsorption nutrients, peat materials