Hami Ink Printing and Dyeing Wastewater Treatment Equipment Manufacturer*

Hami Ink Printing and Dyeing Wastewater Treatment Equipment Manufacturer*-Shandong Quanwei Environmental Protection Water Treatment Equipment Co., Ltd

Integrated sewage treatment equipment
This process adopts integrated sewage treatment equipment without increasing civil engineering investment. It is a steel composite equipment mainly used for the treatment of domestic sewage. The main treatment method adopts the currently mature biochemical treatment technology, contact oxidation method.
(1) Biochemical pool
In order to control the dissolved oxygen in the biochemical tank below 0.2mg/l, intermittent aeration is used in the tank. *The packing material for the biochemical tank adopts a new type of spherical packing material. This type of filler has the advantages of being difficult to block, lightweight, having a large specific surface area, stable treatment effect, and easy to maintain and replace, with a retention time of ≥ 7 hours.
(2) Sedimentation tank
The inclined plate sedimentation tank is a combined sedimentation tank designed based on the shallow pool sedimentation theory. Set up many dense inclined plates in the settling area to allow suspended impurities in the water to settle in the inclined plates or inclined pipes. The water rises and flows along the inclined plates or inclined pipes, and the separated sludge slides down along the inclined plates to the bottom of the pool under the action of gravity, and is then discharged in a concentrated manner. This type of pond can improve sedimentation efficiency by 50-60% and increase processing capacity by 3-5 times on the same area.

Hami Ink Printing and Dyeing Wastewater Treatment Equipment Manufacturer*-Shandong Quanwei Environmental Protection Water Treatment Equipment Co., Ltd

① Horizontal sedimentation tank. Wastewater flows into the pool from one end and flows horizontally within the pool. Suspended solids in the water gradually sink to the bottom of the pool, while clarified water overflows from the other end.
② Radial flow sedimentation tank. Pools are mostly circular with larger diameters, generally ranging from 20 to 30 meters, and are suitable for large water treatment plants. After entering the central cylinder through the inlet pipe, the raw water flows radially towards the periphery of the sedimentation tank through the holes on the cylinder wall and the annular perforated baffle on the periphery. Due to the increasing cross-section of the water passage, the flow velocity gradually decreases, and particles settle down. Clear water overflows from its surroundings and flows into the collection tank for discharge.There are still many manufacturers producing integrated sewage treatment equipment on the market, which also increases the corresponding difficulty when choosing, and it is unclear how to find suitable installation in many categories. Removing nitrate nitrogen while reducing organic matter concentration, and then flowing into an O-grade biological contact oxidation tank for aerobic biochemical reactions, where the vast majority of organic pollutants are degraded through microbial assimilation, synthesis, and decomposition. The effluent flows automatically to the secondary sedimentation tank for solid-liquid separation, and the supernatant from the sedimentation tank flows into the disinfection tank for contact dissolution and disinfection by adding disinfectant.
③ Vertical flow sedimentation tank. The cross-section is mostly circular, but there are also square and polygonal shapes. Water flows into the pool from the bottom of the central pipe, and is blocked by the reflection plate to distribute around the entire horizontal section, slowly flowing upwards. Particles with a settling speed exceeding the rising flow rate sink into the sludge hopper, and the clarified water overflows from the surrounding buried ports outside the pool.
In the methods of sewage treatment and utilization, sedimentation (or flotation) is often used as a pretreatment before other treatment methods.

After being lifted by the lifting pump room, the secondary effluent enters the mechanical accelerated clarification tank (high-efficiency coagulation sedimentation tank) for coagulation and sedimentation separation. Then it enters the air-water backwash filter, and the filtered water can be discharged in compliance with standards after disinfection. The mechanical accelerated clarification tank belongs to the sludge circulation type clarification tank, which is a structure that integrates mixing, flocculation, and sedimentation. Its characteristic is to use the lifting force of mechanical stirring to complete the sludge reflux and contact reaction, with high production capacity and good treatment effect. It can remove residual colloids, suspended particles, CODcr and other pollutants in the secondary treatment effluent. The entire set of equipment can be buried underground, hence it is also known as' buried domestic sewage treatment equipment ' Product features of buried sewage treatment equipment: The domestic sewage treatment equipment is buried below the ground surface, and the surface above the equipment can be used for greening or other purposes, without the need for building houses, heating, or insulation. The secondary biological contact oxidation treatment process adopts push flow biological contact oxidation, which has a better treatment effect than mixed or two-stage series mixed biological contact oxidation tanks. And it has a smaller volume than the activated sludge tank, strong adaptability to water quality, good shock load resistance, stable effluent quality, and will not cause sludge expansion. A new type of three-dimensional packing material is used in the pool, which has a large specific surface area and is prone to microbial biofilm formation and detachment. Under the same organic load conditions, it has a high removal rate for organic matter. Can increase the solubility of oxygen in water.