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項(xiàng)目序號(hào)	類別標(biāo)準(zhǔn)值項(xiàng)目	Ⅰ類	Ⅱ類	Ⅲ類	Ⅳ類	Ⅴ類
1	色(度)	≤5	≤5	≤15	≤25	>25
2	嗅和味	無(wú)	無(wú)	無(wú)	無(wú)	有
3	渾濁度(度)	≤3	≤3	≤3	≤10	>10
4	肉眼可見(jiàn)物	無(wú)	無(wú)	無(wú)	無(wú)	有
5	pH		6.5～8.5		5.5～6.5 8.5～9	<>，>9
6	總硬度(以CaCO3,計(jì))(mg/L)	≤150	≤300	≤450	≤550	>550
7	溶解性總固體(mg/L)	≤300	≤500	≤1000	≤2000	>2000
8	硫酸鹽(mg/L)	≤50	≤150	≤250	≤350	>350
9	氯化物(mg/L)	≤50	≤150	≤250	≤350	>350
10	鐵(Fe)(mg/L)	≤0.1	≤0.2	≤0.3	≤1.5	>1.5
11	錳(Mn)(mg/L)	≤0.05	≤0.05	≤0.1	≤1.0	>1.0
12	銅(Cu)(mg/L)	≤0.01	≤0.05	≤1.0	≤1.5	>1.5
13	鋅(Zn)(mg/L)	≤0.05	≤0.5	≤1.0	≤5.0	>5.0
14	鉬(Mo)(mg/L)	≤0.001	≤0.01	≤0.1	≤0.5	>0.5
15	鈷(Co)(mg/L)	≤0.005	≤0.05	≤0.05	≤1.0	>1.0
16	揮發(fā)性酚類(以計(jì))(mg/L)	≤0.001	≤0.001	≤0.002	≤0.01	>0.01
17	陰離子合成洗滌劑(mg/L)	不得檢出	≤0.1	≤0.3	≤0.3	>0.3
18	高錳酸鹽指數(shù)(mg/L)	≤1.0	≤2.0	≤3.0	≤10	>10
19	硝酸鹽(以N計(jì))(mg/L)	≤2.0	≤5.0	≤20	≤30	>30
20	亞硝酸鹽(以N計(jì))(mg/L)	≤0.001	≤0.01	≤0.02	≤0.1	>0.1
21	氨氮(NH4)(mg/L)	≤0.02	≤0.02	≤0.2	≤0.5	>0.5
22	氟化物(mg/L)	≤1.0	≤1.0	≤1.0	≤2.0	>2.0
23	碘化物(mg/L)	≤0.1	≤0.1	≤0.2	≤1.0	>1.0
24	(mg/L)	≤0.001	≤0.01	≤0.05	≤0.1	>0.1
25	汞(Hg)(mg/L)	≤0.00005	≤0.0005	≤0.001	≤0.001	>0.001
26	砷(As)(mg/L)	≤0.005	≤0.01	≤0.05	≤0.05	>0.05
27	硒(Se)(mg/L)	≤0.01	≤0.01	≤0.01	≤0.1	>0.1
28	鎘(Cd)(mg/L)	≤0.0001	≤0.001	≤0.01	≤0.01	>0.01
29	鉻(六價(jià))(Cr)(mg/L)	≤0.005	≤0.01	≤0.05	≤0.1	>0.1
30	鉛(Pb)(mg/L)	≤0.005	≤0.01	≤0.05	≤0.1	>0.1
31	鈹(Be)(mg/L)	≤0.00002	≤0.0001	≤0.0002	≤0.001	>0.001
32	鋇(Ba)(mg/L)	≤0.01	≤0.1	≤1.0	≤4.0	>4.0
33	鎳(Ni)(mg/L)	≤0.005	≤0.05	≤0.05	≤0.1	>0.1
34	滴滴涕(μg/L)	不得檢出	≤0.005	≤1.0	≤1.0	>1.0
35	六六六(μg/L)	≤0.005	≤0.05	≤5.0	≤5.0	>5.0
36	總大腸菌群(個(gè)/L)	≤3.0	≤3.0	≤3.0	≤100	>100
37	細(xì)菌總數(shù)(個(gè)/L)	≤100	≤100	≤100	≤1000	>1000
38	總σ放射性(Bq/L)	≤0.1	≤0.1	≤0.1	>0.1	>0.1
39	總β放射性(Bq/L)	≤0.1	≤1.0	≤1.0	>1.0	>1.0

 

    水中的COD、氨氮、總磷總氮的含量不單單會(huì)污染水質(zhì)，還會(huì)導(dǎo)致水體的富營(yíng)養(yǎng)化，從而引起水體生態(tài)平衡的破壞。因此需要用到污水cod速測(cè)儀對(duì)水質(zhì)進(jìn)行檢測(cè)，當(dāng)含量超標(biāo)時(shí)采取適當(dāng)?shù)姆椒ń档?，以保證水質(zhì)處于正常范圍內(nèi)。