Evaluation of Regional Domestic Waste Water Treatment Plant Performance in Cimahi City

Abstract

Domestic wastewater treatment plant performance (WWTP) currently refers to stringent wastewater quality standards (Minister of Environment and Forestry Regulation No. 68 of 2016) considering potential environmental degradation because of pollutants in the wastewater. This study evaluated the performance of the Regional Domestic WWTP in Cimahi City. Cimahi has 10 WWTPs which were operated by an Anaerobic Baffled Reactor system. Periodic monitoring only measured the wastewater characteristics after treatment with parameters: total suspended solids (TSS), ammonia, chemical oxygen demand(COD), biological oxygen demand(BOD), and oil and grease. Therefore, wastewater characteristics were measured before and after treatment at selected WWTP during peak and non-peak hours, with TSS, ammonia, and COD. Important hydraulic factors were also measured: flow velocity at peak and non-peak hours, hydraulic detention time, and sludge height. Effluent from all WWTPs did not meet the standard. However, WWTPs with detention time >2 days produced parameter concentrations closed to the maximum value. The selected WWTP has a 5.7days detention time with removal efficiency for COD 57.52%, and TSS 42.56%, during peak period and COD 60.19% and TSS 34.84% for a non-peak period, but ammonia concentration did not decrease. Overall, WWTP has not been able to meet quality standards and the quality.

Determination of Quality and Trophic Status of Cibabat Lake, Cimahi City

“…Based on the observation of the results, Cibabat Lake water is influenced by channels domestic inhabitants around incoming to the lake, which allows the carrying of silt and fine sand, which is eroded when the water flows into the lake. High concentrations of TSS can cause the turbidity of the water to increase and decrease the concentration of dissolved oxygen in the water because sunlight entering the water is blocked by suspended particles, thus disrupting the process of photosynthesis (Dirgawati, Sururi, Wiliana, & Widiawati, 2021).…”

“…The water's organic content causes a high COD content (Santoso, 2018). The COD value in Cibabat Lake water does not meet the quality standards was 63.2 mg/l in 2021 and 121 mg/l in 2022, the increase in the COD value in the lake waters is due to the entry of domestic waste, which is organic matter contained in challenging to degrade biologically (Dirgawati et al, 2021). Chlorine can be produced from clean water treatment processes, waste from human activities, hospital waste, and various industrial activity processes that can pollute the environment (Hayat, 2020).…”

“…The total population of Indonesia in 2021 is 272.7 million people (BPS, 2022). The increasing population and the rapid development of the level of public education can affect the need for clean water, this condition is the main factor that drives the fulfillment of water needs to ensure good sanitation in urban areas (Dirgawati et al, 2021).…”

“…Water quality can affect the condition of the aquatic environment and also have an impact on humans, both directly and indirectly. Effects related to poor water quality are related to public health or waterborne diseases (Dirgawati et al, 2021).…”

Determination of Strategy Planning of Domestic Wastewater Management System in a Commercial Area of Tasikmalaya City

“…This increases the number of waterborne disease cases in many urban areas or cities, resulting in issues of significant adverse human health. Waterborne diseases in Indonesia were estimated to be the cause of 3% of deaths of children under the age of 5 (Ministry of Health, 2020) and economic losses that reach 2.3% of the annual national gross domestic product (Dirgawati et al, 2021). Domestic wastewater management in Indonesia comprises two systems: an on-site system, known as on SPALD-Setempat (SPALD-S), and a centralized or off-site system, known as SPALD-Terpusat (SPALD-T) which is distinguished based on the total number of houses served and the type of technology to treat the wastewater as stated in the Regulation of the Minister of Public Works and Housing (PUPR) No 04 /2017.…”