Wastewater treatment plant water quality laboratory equipment_ Laboratory testing instruments for wastewater treatment plants

The contents of project

1、Standard grading of laboratory water quality testing instruments, vessels, and accessories for sewage treatment plants：

According to the environmental functions and protection objectives of the wastewater treatment plant discharged into surface water bodies, as well as the treatment process of the wastewater treatment plant, the standard values of conventional pollutants for basic control projects are divided into first level standards, second level standards, and third level standards. The first level standards are divided into A standards and B standards. Some types of pollutants and selected control items are not classified.

1、The A standard of the first level standard is the basic requirement for wastewater treatment plant effluent to be used as recycled water. When the effluent from the sewage treatment plant is introduced into rivers and lakes with low dilution capacity for purposes such as landscape water and general reuse, the A standard of the first level standard shall be implemented。

2、When the effluent from the sewage treatment plant is discharged into GB3838 surface water Class III functional water areas (excluding designated drinking water source protection areas and swimming areas), GB 3097 seawater Class II functional water areas, and enclosed or semi enclosed water areas such as lakes and reservoirs, the Class B standard of the first level standard shall be implemented.

3、The effluent from the sewage treatment plant is discharged into GB3838 surface water Class IV and V functional waters or GB3097 seawater Class III and IV functional waters, in accordance with the second level standard.

4、For sewage treatment plants in non key controlled watersheds and non water source protection areas, according to local economic conditions and water pollution control requirements, when adopting the first level enhanced treatment process, the third level standard shall be implemented. But it is necessary to reserve space for secondary processing facilities and achieve secondary standards in stages.

2、Maximum allowable emission concentration value (daily average) for basic control items：

Serial No.	Basic control items	Primary standard		Secondary standard	Level 3 standard
Serial No.	Basic control items	A standard	B standard	Secondary standard	Level 3 standard
1	chemical oxygen demand（COD）	50	60	100	120
2	biochemical oxygen demand（BOD5）	10	20	30	60
3	suspended solids（SS）	10	20	30	50
4	animal and vegetable oils	1	3	5	20
5	petroleum	1	3	5	15
6	anionic surfactant	0.5	1	2	5
7	total nitrogen (calculated as N)	15	20	——	——
8	ammonia nitrogen（calculated as N）	5（8）	8（15）	25（30）	——
9	total phosphorus（calculated as P）	0.5	1	3	5
10	chromaticity (dilution factor)	30	30	40	50
11	pH	6~9
12	fecal coligroup count（units/L）	10³	10⁴	10⁴	——
Note： a、When the influent COD is greater than 350mg/L, the removal rate should be greater than 60%; When the BOD is greater than 160mg/L, the removal rate should be greater than 50%. b、The values outside the parentheses of the ammonia nitrogen project are the control indicators for water temperature>12 ℃, and the values inside the parentheses are the control indicators for water temperature ≤ 12 ℃.

3、Technical Parameters of laboratory water quality testing instruments, vessels, and accessories for sewage treatment plants：

Serial No.	Items	Measuring range	Unit	Maximum deviation	Analysis methods	Standard basis
1	chemical oxygen demand（COD）	5-2000	mg/L	5%	dichromate method	GB 11914
2	biochemical oxygen demand（BOD5）	0-4000	mg/L	±8%	dilution and seeding method	GB 7488
3	suspended solids（SS）	5-1000	mg/L	＜2%F.S.	light scattering method	——
4	animal and vegetable oils	0-900	mg/L	RSD＜0.6%	infrared photometric method	GB/T 16488
5	petroleum	0-900	mg/L	RSD＜0.6%	infrared photometric method	GB/T 16488
6	anionic surfactant	0.01-1.0	mg/L	5%（F.S.）	methylene blue spectrophotometric method	GB 7494
7	total nitrogen (calculated as N)	0.10-150	mg/L	5%（F.S.）	alkaline potassium persulfate digestion-UV spectrophotometric method	GB 11894
8	ammonia nitrogen（calculated as N）	0.02-25.00	mg/L	3%（F.S.）	nessler's reagent colorimetric method	GB 7479
9	total phosphorus（calculated as P）	0.02-10.00	mg/L	5%（F.S.）	ammonium molybdate spectrophotometric method	GB 11893
10	chromaticity (dilution factor)	5-500	PCU	3%（F.S.）	dilution times method	GB 11903
11	pH	0.00-14.00	——	±0.01	atomic absorption spectrophotometry	GB 7475
12	fecal coligroup count（units/L）	——	个/L	——	manifold zymotechnics	HJ 347.2

4、List of laboratory water quality testing instruments, vessels, and accessories for sewage treatment plants：

Serial No.	Part Number	Name	Items	Pictures
1	ERUN-SP-M9000	Portable multi-parameter water quality tester	chemical oxygen demand（COD）、suspended solids（SS）、anionic surfactant、total nitrogen (calculated as N)、ammonia nitrogen（calculated as N）、total phosphorus（calculated as P）、chromaticity (dilution factor)、pH
2	ERUN-ST-OD380	Laboratory benchtop infrared spectrophotometer	animal and vegetable oils、petroleum
3	ERUN-BY-2A	Intelligent BOD5 water quality analyzer	biochemical oxygen demand（BOD5）
4	ERUN-SP-MD690	Portable water quality microbiological tester	fecal coligroup count（units/L）

Note: Analysis parameter items can be flexibly combined and selected according to the customer's own needs.

5、Other parts List of laboratory water quality testing instruments, vessels, and accessories for sewage treatment plants：

Serial No.	Name	Specifications	Quantity
1	Colorimetric tube	Ф25×95mm	10
2	Colorimetric tube	Ф16×110mm	10
3	Test tube rack	White	2
4	Pipette gun	Minimum graduation 0.1mL	2
5	Cuvette	70×25×70mm	2
6	Lens hood	Black	1
7	chemical oxygen demand reagent	200 times/set	1
8	ammonia nitrogen reagent	200 times/set	1
9	total phosphorus reagent	100 times/set	1
10	total nitrogen reagent	50 times/set	1
11	anionic surfactant reagent	20 times/set	1
12	benchtop multifunctional CNC digestion instrument	ERUN-DIG-16B	1
13	biochemical incubator	ERUN-SHX100	1
14	temperature electrode	/	1
15	pH composite electrode	/	1
16	chargers and charging cables	/	1
17	USB cable	/	1
18	instruction Manual	/	1
19	product certificate /product warranty card	/	1