Asian-Pacific Aquaculture 2024

July 2 - 5, 2024

Surabaya, Indonesia

EFFECTIVENESS OF WASTEWATER MANAGEMENT IN AREA-BASED VANAME SHRIMP FARMING IN KEBUMEN REGENCY, CENTRAL JAVA, INDONESIA

Herinto1), Maskar Jayadi2), Suzana Meidwi Ratriningrum3), Ita Rizkiyanti2), Hasanuddin4)

I Gde Buddha Adyana Yasa1 )  Miftahul Huda 1) Ibnu Faturohman  1) Fajar Anggraeni5)

 

  1. Karawang Aquaculture Production Business Service Center, West Java
  1.  Jepara Brackish Water Aquaculture Development Center, Central Java
  1. Serang Fish and Environmental Health Testing Center, Banten
  1.  Ujung Batee  Brackish Water Aquaculture Development Center, Aceh
  1. Research Center for Fishery, National Research and Innovation Agency

 

 



Wastewater management in pond cultivation system units, especially intensive ponds  was  the main issued related to environmental pollution, social impacts and sustainability of shrimp farming businesses, so that aquaculture waste management techniques are important in intensive shrimp farming. The method used in this research by insitu observations on maintenance ponds and Wastewater Treatment Plants (WWTP). Aquaculture wastewater was released through the central drain routinely approximately 1-2% per day, then physical treatment is carried out by settling and filtering on the WWTP plot cluster measuring 1.365 m2 using limestone piles arranged in pyramids and zigzags as partitions. Then the wastewater was flowed to the final processing plot with a size of 7.215 m2 which consists of three limestone blocks. Wastewater treatment at the Main WWTP utilizes tilapia and Gracilaria sp. seaweed as indicators and 1 unit waterwheel for the oxygenation process. The density of tilapia is 1.4 ind.m-2 and seaweed is 0.8-1 kg.m-2 .  The parameters used in this study were total ammonia nitrogen (TAN), total vibrio and the number of plankton types of Dinoflagellates . The results showed that TAN levels decreased by 0.05 – 0.10 mg / L (20.14 – 28.87 %) or an average of 24.46%. Total vibrio bacteria in the maintenance ponds were 12.572,9 CFU/ml, 12.700 CFU/ml at the WWTP inlet, 9.400 CFU/ml at the WWTP filtration plot and 1. 700 CFU/ml at the WWTP outlet. The number of  Dinoflagellate  plankton decreased from 1.988, 7 cells/ml in the maintenance ponds to 573 cells/ml at the WWTP outlet. The results showed that wastewater management in vaname shrimp rearing was effective in reducing TAN levels, total vibrio bacteria and the number of Dinoflagellate plankton.