1. A method for purifying seawater aquaculture wastewater using a composite microbial agent, characterized in that it comprises the following steps:

1)筛选复合微生物菌剂：由光合细菌、硝化细菌、反硝化细菌、嗜酸 乳酸菌、产朊假丝酵母以及芽孢杆菌组成复合微生物菌剂;

1) Screening of composite microbial agents: composite microbial agents are composed of photosynthetic bacteria, Nitrifying bacteria, denitrifying bacteria, acidophilic lactic acid bacteria, Candida utilis and bacillus;

2)复合微生物菌剂采用培养基活化：在培养基中按1%接种量(w/v) 直接投加上述复合微生物菌剂，在37℃摇床150rpm下活化菌种24h， 使微生物总含量为7×108～9×108CFU/mL;

2) The composite microbial inoculum is activated using a culture medium: the above composite microbial inoculum is directly added to the culture medium at a rate of 1% inoculation (w/v), and activated at a shaking table of 150 rpm at 37 ℃ for 24 hours, resulting in a total microbial content of 7 × 108~9 × 108CFU/mL;

3)活化后的复合菌剂投菌量按所处理养殖废水0.6‰～1.2‰比例进行 投加。

3) The activated composite bacterial agent is added in a ratio of 0.6 ‰ to 1.2 ‰ for the treated aquaculture wastewater.

2.如权利要求1所述的一种利用复合微生物菌剂净化海水养殖废水的 方法，其特征在于：所述的步骤1)中复合微生物菌剂中的五种菌种培养 后，根据被处理的海水养殖废水的成份进行调节、配制成复合微生物菌剂， 使菌剂中微生物总菌数≥1.0×1010CFU/g，且其中光合细菌≥5.0×108CFU/g，硝化细菌≥2.0×108CFU/g，反硝化细菌≥3.0×108CFU/g，嗜酸 乳酸菌≥1.0×109CFU/g，产朊假丝酵母≥5.0×108CFU/g，芽孢杆菌≥ 7.5×109CFU/g。

2. A method for purifying seawater aquaculture wastewater using a composite microbial agent as claimed in claim 1, characterized in that: in step 1), five strains of the composite microbial agent are cultured and adjusted according to the composition of the treated seawater aquaculture wastewater to form a composite microbial agent, so that the total number of microorganisms in the agent is ≥ 1.0 × 1010CFU/g, with photosynthetic bacteria ≥ 5.0 × 108CFU/g, Nitrifying bacteria ≥ 2.0 × 108CFU/g, denitrifying bacteria ≥ 3.0 × 108CFU/g, acidophilic lactic acid bacteria ≥ 1.0 × 109CFU/g, Candida albicans ≥ 5.0 × 108CFU/g, Bacillus subtilis ≥ 7.5 × 109CFU/g.

3.如权利要求2所述的一种利用复合微生物菌剂净化海水养殖废水的 方法，其特征在于：所述的五种菌种分别采用微生物菌种资源库保藏 号为CCTCC M 205147的沼泽红假单胞、ACCC 10691的节杆菌、ACCC 03247 的反硝化产碱菌、ACCC 10637的嗜酸乳酸菌、CGMCC 2.1016的产朊假丝酵 母、CGMCC 1.1630的枯草芽孢杆菌，进行耐盐、耐温驯化，作为生产菌， 组成复合微生物菌剂。

3. A method for purifying seawater aquaculture wastewater using a composite microbial agent as claimed in claim 2, characterized in that the five bacterial strains are respectively composed of Rhodopseudomonas mirabilis with the preservation number CCTCC M 205147, Arthrobacter spp. with ACCC 10691, denitrifying alkali producing bacteria with ACCC 03247, acidophilic lactic acid bacteria with ACCC 10637, Candida albicans with CGMCC 2.1016, and Bacillus subtilis with CGMCC 1.1630, Conduct salt and temperature tolerance domestication as a production bacterium to form a composite microbial agent.

4.如权利要求1所述的一种利用复合微生物菌剂净化海水养殖废水的 方法，其特征在于所述的步骤2)中培养基组分为：蛋白胨3g/L、酵母粉 3g/L、葡萄糖5g/L、氯化钠10g/L、磷酸二氢钾0.5g/L、七水硫酸镁 0.2g/L、硫酸铵1g/L、海水1L，调pH 7.0。

4. The method for purifying mariculture wastewater by using a composite microbial agent as claimed in claim 1, which is characterized in that in step 2), the composition of the culture medium is: peptone 3g/L, yeast powder 3g/L, glucose 5g/L, sodium chloride 10g/L, Monopotassium phosphate 0.5g/L, magnesium sulfate heptahydrate 0.2g/L, ammonium sulfate 1g/L, seawater 1L, and the pH is adjusted to 7.0.