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Sincere to the letter, meticulous, customer demand first, after-sales service for the survival value,

To provide comprehensive and effective water quality analysis technical support and system integration scheme for users.

Chemical enterprises

Most of the exhaust gases are VOCs with strong diffusion, low olfactory value and wide range of influence.

Table 1 maximum allowable emission concentration of class I pollutants

Serial number	Classification of pollutants	Maximum allowable emission concentration
1	Total mercury	0.05 mg/L
2	Alkyl mercury	No detection
3	Total cadmium	0.1 mg/L
4	Hexavalent chromium	0.5 mg/L
5	Total arsenic	0.5 mg/L
6	Total lead	1.0 mg/L
7	Total nickel	1.0 mg/L
8	Total beryllium	0.005 mg/L
9	Total chromium	1.5 mg/L
10	Benzo (a) pyrene	0.00003 mg/L
11	Total silver	0.5 mg/L
12	totalαradioactivity	1Bq/L
13	totalβradioactivity	10Bq/L

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For the second kind of pollutants, the maximum allowable emission concentration of sampling at the discharge outlet of the pollutant discharge unit shall meet the requirements of Table 2 of this standard.Table 2 maximum allowable emission values of class II pollutants (indicators)

Serial number	Contaminants	Scope of application				First class standard	Secondary standard
1	PH	All pollutant discharge units (dimensionless)				6～9
2	chroma	All pollutant discharge units (dilution ratio)				50	80
3	Suspended solids (SS)	Chemical fertilizer	Ammonia industry	large	mg/L	60
					kg/t	0.6
				Small and medium sized	mg/L	80
					kg/t	4.0
			Ammonium phosphate and heavy superphosphate, nitrophosphate industrial mg / L			30	50
			Other pollutant discharge units, mg / L			70	150
		Centralized industrial wastewater treatment plant, mg / L				70	150
		Other pollutant discharge units, mg / L				70	150
4	Five day biochemical oxygen demand (BOD5)	Petrochemical Industry (including petroleum refining), mg / L				20	30
		Chemical fertilizer, mg / L				20	30
		Inorganic chemical raw materials, mg / L				20	30
		Organic chemical raw materials, mg / L				20	30
		Pesticide, mg / L				20	30
		Polymer, mg / L				20	30
		Fine chemicals and others, mg / L				20	30
		Centralized industrial wastewater treatment plant, mg / L				20	30
5	Chemical oxygen demand (COD)	Petrochemical Industry (including petroleum refining), mg / L				60	120
		Chemical fertilizer	Ammonia industry	large	mg/L	100
					kg/t	1.0
				Small and medium sized	mg/L	120
					kg/t	6.0
			Other pollutant discharge units, mg / L			80	120
		Inorganic chemical raw materials, mg / L				80	120
		Organic chemical raw materials, mg / L				80	120
		Pesticide, mg / L				100	120
		Polymer, mg / L				80	120
		Fine chemicals and others, mg / L				80	120
		Centralized industrial wastewater treatment plant mg / L				80	100

Table 2 (Continued)
6	Petroleum	Chemical fertilizer	Ammonia industry	large	mg/L	5
					kg/t	0.05
				Small and medium sized	mg/L	5
					kg/t	0.25
			Other pollutant discharge units	mg/L		5	10
		Other pollutant discharge units mg / L				5	10
7	Volatile phenol	Chemical fertilizer	Ammonia industry	large	mg/L	0.1
					kg/t	0.001
				Small and medium sized	mg/L	0.1
					kg/t	0.005
			Other pollutant discharge units, mg / L			0.5
		Other pollutant discharge units, mg / L				0.5
8	total cyanide	Chemical fertilizer	Ammonia industry	large	mg/L	0.2
					kg/t	0.002
				Small and medium sized	mg/L	1.0
					kg/t	0.05
			Other pollutant discharge units, mg / L			0.5
		Other pollutant discharge units, mg / L				0.5
9	sulfide	Chemical fertilizer	Ammonia industry	large	mg/L	0.50
					kg/t	0.005
				Small and medium sized	mg/L	0.50
					kg/t	0.025
			Other pollutant discharge units, mg / L			1.0
		Other pollutant discharge units mg / L				1.0
10	Ammonia nitrogen	Petrochemical Industry (including petroleum refining) mg / L				15	30
		Chemical fertilizer	Ammonia industry	large	mg/L	40
					kg/t	0.4
				Small and medium sized	mg/L	60
					kg/t	3.0
			Other pollutant discharge units, mg / L			15	25

Table 2 (Continued)
10	Ammonia nitrogen	Inorganic chemical raw materials, mg / L				15	25
		Organic chemical raw materials, mg / L				15	25
		Pesticide, mg / L				15	25
		Polymer, mg / L				15	25
		Fine chemicals and others, mg / L				15	25
		Centralized industrial wastewater treatment plant, mg / L				15	25
11	fluoride	All pollutant discharge units, mg / L				10	10
12	Phosphate (as P) (total phosphorus)	Petrochemical Industry (including petroleum refining), mg / L				0.5	1.0
		Chemical fertilizer	Ammonium phosphate and heavy superphosphate, nitrophosphate industry, mg / L			20	30
			Other pollutant discharge units, mg / L			0.5	1.0
		Inorganic chemical raw materials, mg / L				0.5	1.0
		Organic chemical raw materials, mg / L				0.5	1.0
		Pesticide, mg / L				0.5	1.0
		Polymer, mg / L				0.5	1.0
		Fine chemicals and others, mg / L				0.5	1.0
		Centralized industrial wastewater treatment plant, mg / L				0.5	1.0
Note: kg / T is the amount of pollutants allowed to be discharged per ton of ammonia production.

Test index

In fertilizer production Ammonia nitrogen / nitrate content

In fertilizer production Calcium oxide / phosphorus oxide content

In fertilizer production Molar ratio of sodium to phosphorus In brine Calcium magnesium (hardness) content

Total amount of EDA in brine In brine chloride content

In process liquid Chlorate / hydrogen peroxide / sulfuric acid content

In process liquid Phosphite / hypophosphite content

Ammonium ion / hydroxylamine in process liquid content

In the production of deionized water Sodium ion content

In the production of deionized water Silicon ion content

Last application :

Pulp and paper

Metallurgical Wastewater Treatment

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