Abstract
As water is becoming a rare resource, the onsite reuse and recycling of grey water are practiced in many countries as a sustainable solution to reduce the overall urban water demand. In this paper, a decentralized grey water treatment system, which used a submerged spiral-wound ultrafiltration (UF) membrane module, was studied. This grey water treatment system aimed to treat and recover the resources present in the grey water. The study revealed that the UF membrane filtration system was able to maintain a permeate flux between 6 and 10 L/m2/h. TOC can be reduced from the influent value of 161 to 28.6 mg/L in the permeate, meaning an average elimination rate of 83.4%. In addition, soluble nutrients such as ammonia and phosphorus can pass through the UF membrane and remain in the permeate. The total nitrogen and total phosphorus in the permeate were 16.7 and 6.7 mg/L respectively. The permeate was low in turbidity (below 1 NTU) and free of suspended solids and had an excellent physical appearance. Around 4...
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