滨海电厂冷却水余热和余氯对中华哲水蚤的影响

依据滨海电厂冷却系统的实际运作情况，模拟研究了滨海电厂冷却水余热和余氯对中华哲水蚤的影响.结果表明：中华哲水蚤的热忍受能力随暴露时间延长而降低，随驯化温度升高而升高.驯化温度为16 ℃～27 ℃的中华哲水蚤在持续受到15、30、45 min热冲击及持续升温暴露24和48 h的致死温度分别为29.9 ℃～31.7 ℃、29.4 ℃～31.0 ℃、28.9 ℃～30.3 ℃和26.9 ℃～28.5 ℃、26.4 ℃～28.0 ℃.当驯化温度升高到一定程度后，其热忍受能力不再上升.电厂冷却水中余氯对中华哲水蚤的毒性随驯化温度升高、升温幅度增大及暴露时间延长而增强.

Effects of residual heat and chlorine in cooling water from coastal power plant on Calanus sinicus. Effects of residual heat and chlorine in cooling water from coastal power planton Calanus sinicus.

According to the practical operation of coastal power plant cooling system, a simulation study was conducted on the effects of residual heat and chlorine in the cooling water on Calanus sinicus. The results showed that the thermal tolerance of C. sinicus to the cooling water was decreased with increasing exposure duration but increased with increasing acclimation temperature. When the acclimation temperature was 16 degrees C-27 degrees C, the lethal temperature of C. sinicus under thermal shock for 15, 30 and 45 min was 29.9 degrees C-31.7 degrees C, 29.4 degrees C-31.0 degrees C and 28.9 degrees C-30.3 degrees C, and that of C. sinicus continually exposed to increasing temperature for 24 and 48 h was 26.9 degrees C-28.5 degrees C and 26.4 degrees C-28.0 degrees C, respectively. When the acclimation temperature increased to a certain degree, the thermal tolerance of C. sinicus maintained at a stable level. The toxicity of residual chlorine on C. sinicus enhanced with increasing acclimation temperature, temperature increment, and exposure duration.