Industrial Filtration Solution Products Manufacturer--China YUBO Filtration

icon Inquiry cart ( 0 )
Pre-treatment is the preliminary removal of wastewater or sludge constituents, such as oil, grease, and various solids (e.g., sand, fibers, and trash). Built before a conveyance or treatment technology, pre-treatment units can retard the accumulation of solids and minimize subsequent blockages. They can also help to reduce the abrasion of mechanical parts and extend the life of the sanitation infrastructure.

1. Relatively low capital costs; low to moderate operating costs
2. Reduced risk of impairing subsequent conveyance and/or treatment technologies
3. Higher lifetime and durability of sanitation hardware

Frequent maintenance required


Oil, grease, sand, and suspended solids can impair transport and/or treatment efficiency through clogging and wear. Therefore, prevention and early removal of these substances are crucial for the durability of a treatment system. Pre-treatment technologies use physical removal mechanisms, such as screening, flotation, settling, and filtration.

Behavioral and technical source control measures at the household or building level can reduce pollution loads and keep pre-treatment requirements low. For example, solid waste and cooking oil should be collected separately and not disposed of in sanitation systems. Equipping sinks, showers, and the like with appropriate screens, filters and water seals can prevent solids from entering the system. Sewer inspection chambers should always be closed with manhole covers to prevent extraneous material from entering the sewer.

Grease Trap

The goal of the grease trap is to trap oil and grease so that they can be easily collected and removed. Grease traps are chambers made out of brickwork, concrete, or plastic, with an odor-tight cover. Baffles or tees at the inlet and outlet prevent turbulence at the water surface and separate floating components from the effluent. A grease trap can either be located directly under the sink or, for larger amounts of oil and grease, a bigger grease interceptor can be installed outdoors. An under-the-sink grease trap is a relatively low cost, but must be cleaned frequently (once a week to once a month), whereas a larger grease interceptor has a higher capital cost. If designed to be large enough, grease traps can also remove grit and other settleable solids through sedimentation, similar to septic tanks. 
The Resin Traps and Water Distributor Header Assembly is the filter element for the Grease Trap, and usually replace the filter element is ok. We are the filter element factory and manufacturer, welcome contact us to get it.

Resin Traps and Water Distributor Header Assembly


Screening aims to prevent coarse solids, such as plastics, rags, and other trash, from entering a sewage system or treatment plant. Solids get trapped by inclined screens or barracks. The spacing between the bars depending on cleaning patterns. Screens can be cleaned by hand or mechanically raked. The latter allows for a more frequent solids removal and, correspondingly, a smaller design.

If you are looking for the wedge wire screen as the filter strainer, you can click here or leave a message to us.
wedge wire screen filter element

Grit Chamber

Where subsequent treatment technologies could be hindered or damaged by the presence of sand, grit chambers (or sand traps) allow for the removal of heavy inorganic fractions by settling. There are three general types of grit chambers: horizontal-flow, aerated, or vortex chambers. All of these designs allow heavy grit particles to settle out, while lighter, principally organic particles remain in suspension.


Grease traps should be applied where considerable amounts of oil and grease are discharged. They can be installed at single households, restaurants, or industrial sites. Grease removal is especially important where there is an immediate risk of clogging (e.g., a constructed wetland for the treatment of greywater).

Screening is essential where solid waste may enter a sewer system, as well as at the entrance of treatment plants. Trash traps, e.g., mesh boxes can also be applied at strategic locations like market drains.

As laundries release high amounts of fabric fibers and particles with their wastewater, they should be equipped with lint trap devices.

In the case where roads or not paved, rainwater and/or stormwater bring a substantial amount of sand particles into the system. A Grit chamber helps to prevent abrasion and sand deposition in the wastewater treatment plants.