Website mobile



Contact us

Follow us

Copyright © 2019 HANQI   Environmental   京ICP备 15027810 号   Powered by www.300.cn

Room 308, Building A, Jiahua Mansion, No.9, Shangdi No.3 Street,

Haidian District, Beijing, China

solutions detail


Page view

Refineries and Petrochemical


Full-process is designed for the characteristics of petrochemical wastewater like complex water quality, long process, and high reuse rate, we emphasize three keywords "Full, Short, Low".
"Full" is "Full Technologies and Services".One is comprehensive ability of our team: defining the conditions of input and output, and providing system solutions.The other is comprehensiveness of technology: covering whole process from pretreatment, biological, tertiry treatment, membrane system, up to RO brine treatment.
"Short" is "4 to 6 Units Shorter than Routine". Optimization of full-process is benefited from the unit efficiency and system optimum. "Low" is "Low Cost". Due to "short process", "optimization unit" and "land saving", we can naturally get the best investment and operaten cost.




V-Flow® Circular Oil Separation Tank

Different from traditional API type, V-Flow® adopts the mode of central water inlet and upward flow, which makes an uniform distribution and efficient separation. A scraper is used to clean up sludge down to bottom and dross up to surface. Oil Content: inlet<800mg/l, outlet<100mg/l.


Unibub®  Air Flotation Tank

Installed behind V-Flow®,with the major function of oil and SS removal, and protecting the following biological system. Higher dissolved air pressure(6bar) and proprietary releasers form perfect bubbles of 30um to 80um, so as to improve efficiency. The releaser is installed outside the tank, maintenance free. Full automatic control is designed to avoid workers contacting the harsh operating environment. The outlet index: SS<20mg/l,Oil<20mg/l

Magflow® Loaded Oil Removal Tank

When the density difference between oil and water is small, conventional method is tough to the work. It makes a big challenge for wastewater treatment in heavy oil deep processing industry.  Magflow® overcomes the problem by loading flocs that formed from heavy oil, SS and agents onto the magnetic medias, and cleaning up as sludge by separator. we can recycle and reuse the medias by a drum machine.



Turbomix® A/O

This aerator is dedicated to petrochemical industry, with material of PP and cast steel, which is designed to overcome aging problems due to the oil. The cover plate will fall down automatically to avoid sludge getting in when aerator stops working.



BFR® Moving Bed Biofilm Reactor

BFR® is a kind of modified MBBR, which is usually designed for reconstruction of biological system. We can expand the scale without changing the original tank capacity, and upgrade the index including COD, NH3-N, TN and TP to a higher standard.

Tertiary Treatment


1, Chemical Strengthened Treatment


Turboflow® Clarifier

The effect of sludge backflow and Internal circulation system in the reaction zone is forming large, density and uniformity flocs, and achieving faster separation of mud and water. Flow velocity: 15-25m/h.

Sandflow® Clarifier

Loading flocs onto medias(micro sand) greatly speeds up the separation of mud and water. We can recycle and reuse the medias by a hydrocyclone. The velocity is 40-60m/h, which is suitable for land occupation limited situation; phosphorus removal; suitable for quality improvement and capacity expansion of existing water plants.

Flo-Fil® Air Flotation Filter

The unique process combines air flotation and filtration technology, algae and SS are removed through one unit only, which streamlines the process. It is especially suitbale for two situations: raw water quality is poor; as preteatment of membrane system.

2, Hard COD


Tri-Clean®  Process

When biological reaction is not working thorough or the content of hard COD is higher, it becomes a tough problem to deal with. we combine Oxymax® and Biofix® Technology, the pre-ozone unit converts refractory COD into BOD, and Biofix® follow-up undertakes BOD removal task, then the post-ozone will oxidize away the rest COD. "Three-stage" makes an effective use of the best ozone reaction points, so as to get the minimum dosage and an optimal cost.


RO Brine Treatment

Combining Ozone , Biofix®NDN and Sandflow® technology to remove COD, TN, SS and TP content, ensuring to meet standard. The activated carbon unit is selective dosed according to the content of COD input.


Previous article: