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【Chemical Machinery and Equipment Network Star Enterprise】Recently, the heart-to-heart sewage terminal energy efficiency improvement project undertaken by Longjing Environmental Protection successfully completed the 168 performance assessment
.
The raw water COD was 600mg/L, ammonia nitrogen was 310 mg/L, the effluent quality achieved ammonia nitrogen < 0.
5mg/L, the total nitrogen < 2mg/L, and the single pool treatment capacity was increased by 3 times to 95t/h
.
This project is a landmark project of Lef-VNDTM high-efficiency biological denitrification technology applied to coal gasification wastewater by Longjing Environmental Protection Water Affairs Division, and also provides a successful example
for solving water treatment problems such as low-carbon nitrogen ratio and high carbon source demand in this field.
.
The raw water COD was 600mg/L, ammonia nitrogen was 310 mg/L, the effluent quality achieved ammonia nitrogen < 0.
5mg/L, the total nitrogen < 2mg/L, and the single pool treatment capacity was increased by 3 times to 95t/h
.
This project is a landmark project of Lef-VNDTM high-efficiency biological denitrification technology applied to coal gasification wastewater by Longjing Environmental Protection Water Affairs Division, and also provides a successful example
for solving water treatment problems such as low-carbon nitrogen ratio and high carbon source demand in this field.
Coal chemical gasification gray water is a typical wastewater with low carbon and nitrogen ratio, and the traditional technical process has problems such as large dosage of chemicals, high power consumption of circulating pumps and oxidation fans, and the difficulty of treatment technology and high cost of expenses, so it is urgent to upgrade technology to improve efficiency, carbon reduction and energy saving
.
.
Compared with the original technology process, simultaneous nitrification and denitrification of Lef-VNDTM high-efficiency biological denitrification technology have outstanding advantages, which can shorten the reaction residence time by 30%-40%, save 20%-30% of carbon source demand, save 10%-20% of aeration demand, greatly shorten the residence time and greatly reduce
the operating cost.
the operating cost.
Comparison of pool sludge before and after Lef-VNDTM high-efficiency biological denitrification technology
After multiple investigations and comparisons, in order to effectively reduce the energy consumption of water treatment operation in the ammonia synthesis industry, the owner finally chose Longjing environmental protection water Lef-VNDTM high-efficiency biological nitrogen removal technology
based on the data support of small and pilot tests.
based on the data support of small and pilot tests.
In May 2022, the technical service team of Longjing Water and the operation team of the heart-to-heart owner completed the adaptability of Lef-VNDTM high-efficiency biological nitrogen removal technology to the water of the project, with good strain activity, energy saving and high efficiency level
.
During the operation of 168, the single-pool processing capacity of Lef-VNDTM high-efficiency biological denitrification technology has reached 95t/h, and the ammonia nitrogen and total nitrogen values have been reduced by more than
150 times.
Compared with the original technical process, the operating cost of a ton of water has been reduced from about 5 yuan to about 3.
5 yuan, and the amount of carbon source input has been greatly reduced
.
According to the estimated water volume of 7200m3/d, the project can save about 7 million yuan in pharmaceutical and electricity costs per year, and the energy saving, carbon reduction and efficiency improvement are remarkable
.
.
During the operation of 168, the single-pool processing capacity of Lef-VNDTM high-efficiency biological denitrification technology has reached 95t/h, and the ammonia nitrogen and total nitrogen values have been reduced by more than
150 times.
Compared with the original technical process, the operating cost of a ton of water has been reduced from about 5 yuan to about 3.
5 yuan, and the amount of carbon source input has been greatly reduced
.
According to the estimated water volume of 7200m3/d, the project can save about 7 million yuan in pharmaceutical and electricity costs per year, and the energy saving, carbon reduction and efficiency improvement are remarkable
.
Original: Longjing Water's high-efficiency biological nitrogen removal technology was successfully put into operation in the field of coal chemical gasification wastewater
