Abstract
Laundry activities grow rapidly in Indonesia in the recent year, remaining the problem of environmental pollution because of the use of detergent. The purpose of the current study was to investigate the ability of sludge of drinking water treatment plant (DWTP) as adsorbent combined with phytoremediation system to remove chemical oxygen demand (COD), phosphate and surfactant in laundry wastewater. Batch and continuous blow studies were conducted on different variables such as adsorbent mass, contact time, and type of plant for phytoremediation system. The results of the current study show that adsorption combined phytoremediation system could remove COD, phosphate, and surfactant up to 77.5%, 54.3%, and 99.9%, respectively. Based on the results, it means that the adsorption combined phytoremediation system could be considered as an appropriate environmental technology for laundry wastewater treatment in the near future.
Highlights
In the recent year, environmental issues are becoming a public concern in developed and even under developing countries
The limit of technology and budget for laundry wastewater treatment are the most common reason for laundry problem in Indonesia and other developing countries, because the laundry activity is usually operated as a home scale industry
Kiapu (Pistia stratiotes) and water hyacinth (Eichhornia crassipes) were taken from Sleman to be employed as a plant for phytoremediation system
Summary
Environmental issues are becoming a public concern in developed and even under developing countries. The home industry is commonly the main problem of environmental degradation. The rapid growth of laundry activity in many cities in Indonesia has been remaining environmental contamination due to the limit of wastewater treatment. Most laundry houses disposed their wastewater directly to the environment without any treatment, the concentration of some pollutant such as COD, phosphate, and surfactant in some water bodies are frequently higher than the local and national standard. The concentration of COD and surfactant in laundry wastewater is up to 363.7 mg/L and 754.4 mg/L, respectively [1]. The limit of technology and budget for laundry wastewater treatment are the most common reason for laundry problem in Indonesia and other developing countries, because the laundry activity is usually operated as a home scale industry
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