Pesticide chemical industry Fine chemicals Mechanical processing Third party operation service Hazardous waste reduction and recovery |
wastewater from an enterprise in Jiangsu Province
【Industry】
Agrochemical,Jiangsu famous enterprise
【Waste Water Type】
Toxic wastewater
【Treatment Capacity】
60m3/d
【Influent Hydrazine Pollutants】
~20,000ppm
【Main Pollution Components】
Hydrazine hydrate
【Objective】
The removal of hydrazine pollutants, which have a great toxic effect on the biochemical system, will lead to the collapse of the biochemical system
【Treatment process】
UV-AOP
【Effluent】
Hydrazine pollutants：<100ppm
API wastewater（containing DMF，Dichloropyridine）
【Industry】
Active pharmaceutical ingredient（API）listed company
【Wastewater Type】
High concentration toxic wastewater containing DMF and Dichloropyridinez (W1) + High concentration ammonia nitrogen wastewater (W2)
【Capacity】
W1: 50m3/d
W2: 300m3/d
【Main Parameters of Influent】
W1: mainly containing DMF, Toluene, 2-chloro-5-chlorodimethylpyridine, acrolein, etc. comprehensive COD: 2500~4000mg/L, TN: ~5000mg/L, B/C＜10%
W2: COD: ~3000mg/L; TN: 700~900mg/L
【Objective】
W1: To reduce biological toxicity and ensure the stable operation of subsequent biochemical systems.
W2: To be discharged into pipes, COD < 500 mg/L, TN < 60 mg/L, removal rate of TN > 95%.
【Treatment Process】W1: Ultraviolet catalytic advanced oxidation technology (UV-AOP)
Comprehensive wastewater（W1 after pretreatment + W2）: Second order nitrification and denitrification + membrane bioreactor (secondorder AO + MBR)
【Effluent】
After UV-AOP treatment of W1：removal rate of COD > 40%, B/C=40 ~ 55%，removal rate of DMF > 90%.
After second order AO + MBR treatment of W2：COD < 400 mg/L, TN < 50 mg/L.
Treatment of high concentration and refractory wastewater
【Industry】
Agrochemical, Jiangsu famous enterprise
【Waste Water Type】
High concentration and refractory wastewater
【Treatment Capacity】
400m3/d
【Inlet CODcr】
10,000~20,000ppm, TN:1000~2000ppm，氨氮：~1000ppm
【Main Pollution Components】
Pyridines、DMEA、etc.
【Objective】
Degradation of pollutants, discharge up to standard
【Treatment Process】
Tssb +Advanced Oxidation + A / O + Advanced Treatment
【Effluent】
It can be used as make-up water for cooling tower.
High concentration and high toxicity wastewater from an enterprise in Guangdong
【Industry】 Fine chemical industry, a famous enterprise in Guangdong
【Waste Water Type】
Highly toxic wastewater
【Treatment Capacity】
30m3/d
【Inlet CODcr】
40,000~60,000ppm
【Main Pollution Components】
THF
【Objective】
Degradation of pollutants, discharge up to standard
【Treatment Process】
UV-AOP+TSSB+A/O
【Effluent】
CODcr<300ppm
Mechanical processing wasteemulsion
【Industry】
Mechanical processing
【Waste Water Type】
Waste emulsion
【Treatment capacity】
10m3/d
【Inlet CODcr】
60,000~200,000ppm
【Main Pollution Components】
Aromatics, machining emulsifiers
【Treatment Process】
Efficient demulsification
【Effluent】
CODcr<20,000ppm
Hazardous waste treatment
【Industry】
Hazardous waste treatment（HW09）
【Treatment Capacity】
30m3/d
【Waste Water Type】
Waste emulsion
【Inlet CODcr】
~100,000ppm
【Main Pollution Components】
Machining emulsifier
【Treatment Process】
Efficient Demulsification + Biochemical Treatment + Advanced Treatment
【Effluent】
As cooling water make-up water for reuse
Operation project of an agricultural chemical enterprise in Taicang, Jiangsu
【Scale】
500 m3/d
【Main Process】
UV Advanced
Oxidation System → Regulating Tank → Anaerobic Reaction Tank → Buffer Tank → A / O Biochemical Tank → MBR Tank → Outlet Tank
【Comparison of Inlet And OutletWater Quality】
Index
Numerical Value
An agricultural chemical enterprise operation project in Nantong, Jiangsu
【Scale】
500 m3/d
【Main Process】
Regulating Tank → Anaerobic Reaction Tank → Primary A / O Reaction Tank → Fenton Reaction Tank → Secondary A / O Reaction Tank → MBR Tank → RO System (emergency standby) → Buffer Tank→Outlet Tank
【Comparison of Inlet And OutletWater Quality】
CODcr
SS
TN
NH3-N
（mg/L）
（mg/L）
（mg/L）
（mg/L）
pH
（mg/L）
（mg/L）
（mg/L）
Emission limits
Pollutant
Sewage Quality Table
Index
Numerical Value
Sewage Quality Table
The project has been completed and put into use in 2016, which is a typical performance of the third-party environmental operation
project of Checoa.
Effluent Quality Table
Pollutant
CODcr
CODcr
TN
TDS
NH3-N
SS
TP
NH3-N
CODcr
NH3-N
SS
pH
（mg/L）
（mg/L）
（mg/L）
（mg/L）
~3000
~300
~400
（mg/L）
（mg/L）
（mg/L）
（mg/L）
High salt wastewater from an enterprise in AnHui province
【Industry】
Agrochemical,Anhui famous enterprise
【Waste Water Type】
High concentration and high salt wastewater
【Inlet CODcr】
10,000~20,000ppm
【Main Pollution Components】
O-phenylenediamine, catalyst, etc
【Objective】
Remove macromolecular organics such as o-phenylenediamine and catalyst, and recover salt
【Treatment Process】
UV-AOP
【Effluent】
CODcr ：~2,500ppm，O-phenylenediamine、Catalyst can not be detected
【Steam out salt】
Clean, colorless, o-phenylenediamine < 0.01%, catalyst not detected
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