Natural and wastewater treatment
Since 1989
professional solutions
for natural and waste
water treatment

Pre-treatment of water

Общие данные

Pre-treatment of water: clarification of natural and waste water by coagulation

The compact block-modular water treatment complex (BMVK) UKOS-VOD-CPF is designed for clarification of natural and waste water by non-pressure filtration through a multilayered granular charge of a density higher than water and a gravel backing layer. Quartz sand is used as a granular charge and gravel of various sizes for the supporting layer. When using a polymer filter load, no replacement of the load is required over its entire service life.

In the lower part of the body of the pre-treatment unit there is a high resistance tubular distribution system, which serves to distribute the washing and clarified water evenly. Above the filtering loading of BMWC, there are trays for collecting wash and clarified waters. The tray is inserted into the side pocket. To control the complex and adjust its operating parameters it is equipped with shut-off and control valves.

The unit is fitted with the following process nozzles:

  • feed water supply
  • filtered water tap
  • flushing water supply
  • flushing water outlet
  • overflow line

Due to constant upgrades of the natural water clarification plant, changes may be introduced to its design.

Application area

The UKOS-VOD-CPF system is used as a two-stage filtration system to pre-treat water before fast filters. The conditions of application and operation of the plant comply with the current regulations and rules relating to contact pre-filters.

Water clarification by coagulation

If necessary, the clarified water undergoes preliminary treatment with reagents first. After that, water is fed to the BMVK plant. Clarification of water occurs by contact coagulation in the thickness of the filtering charge while the water moves from bottom to top of the unit.

The UKOS-VOD-CPF water pre-treatment system is periodically flushed with purified water. Clean water from the tank is fed into the built-in filter flushing system, the contaminated rinse water is collected by the distribution chute into the side pocket and then drained to the sump. Also, flushing may be carried out from a pressure tower or using special flushing pumps.

After clarification of water, it is taken to the BMWC UKOS-VOD-FP, and then fed to the water supply system.

Комплект поставки

В основной комплект поставки входят:

  • the UKOS-VOD-CPF unit
  • passport
  • operations manual


The UKOS-VOD-CPF unit may be produced in two versions: from carbon and stainless steel.

Условия поставки

Срок поставки: 1-3 месяца (в зависимости от типоразмера оборудования, загруженности производства, сроков поставки комплектующих).

Транспортировка: by any mode of transport.

Складирование оборудования: under a canopy, in summer - in the open air.


Стандартный гарантийный срок составляет 12 месяцев со дня приёмки оборудования в эксплуатацию. Возможно увеличение срока гарантии за дополнительную плату.

Исходные требования

Установку допускается применять при следующих исходных данных:

  • concentration, maximum, mg/l:
    • petroleum products - 200
    • suspended matter – 1,500

Габаритный чертёж

Specs. Function dy
a Water feed to filter 150
b Filtered water outlet 150
c Flushing water feed 300
d Flushing water outlet 350
e Overflow 150
i First filtrate discharge 150

Tech specs

# Indicator Complex modification
1. Capacity, m3/day 150 250 500 750
2. Outer dimensions, mm:
- Length (L) 1500 2000 2500 3000
- Width (W) 1000 1500 2000 2300
- Height (H) 4640 4640 4640 4640
3. Mass, t:
- dry 6.6 13.7 24.2 33.6
- filled 9.1 19.3 33.9 46.5
4. Filtering cycle duration, hr 8