한국환경과학회지 제6권 제2호 (p.141-152)

호기성 고율 안정조에서 빛의 조사 기간과 pH가 조류의 영양물질 제거에 미치는 영향

Effect on Nutrients Removal of Algae in Aerobic High Rate Pond by Irradiance Period and pH
키워드 :
Pilot plant,Irradiance period,pH condition,starch wastewater,The most economical method,To contribute to natural ecosystem,Eutrophication

초록

The pilot plant had been made so as to be an association system from the various items managed to have degrees of efficiency and it have been done to consider the experimental result with irradiance period and pH influence of all major things to treatment function of Waste Stabilization Pond. The results are as following.
The attained results for continuous & cyclic irradiance
1. 24L.-reactor was prior to 12L.-12D.-reactor on oxygen generation & algal production ability. 2. 24L.-reactor was prior to 12L.-12D.-reactor on nutrients removal efficiency. 3. In 24L.-reactor it maintained 5 ㎎/L∼6 ㎎/L, DO concent. enough to a fish`s survival.
The attained results for pH condition  
1. Oxygen generation & algal production in pH 4-reactor were higher than those in pH 10-reactor. 2. The acidic condition at pH 4 and alkalic condition at pH 10 did not so much affect an algal growth and nutrients removal.
The attained results for whole  
1. In view of the results appeared as [(NH_3-N)+(NO_3-N)] removal efficiency, 89.1%∼93.9% and PO_4-P removal efficiency, 34.3%∼83.7% & COD removal efficiency, 88.5%∼93.9%, It is possible to treat the wastewater with starch and pH which have been known as thedifficult problem. 2. At the point of non using methanol to nitrificate NO_3-N, the nutrients removal method by using an algal growth is the most economical method in the whole nutrients removal methods. 3. The nutrients removal method by using an algal growth contributes to natural ecosystem. 4. The nutrients removal method by using an algal growth is excellant in the prevention against the eutrophication.